ANNUAL GROUNDWATER MONITORING REPORT FOR YEAR 2013 LAS CRUCES FOOTHILLS LANDFILL LAS CRUCES, NEW MEXICO

Transcription

1 ANNUAL GROUWATER MONITORING REPORT FOR YEAR 2013 LAS CRUCES FOOTHILLS LAFILL LAS CRUCES, NEW MEXICO prepared by Annie M. McCoy, CPG Roger Peery, CPG JOHN SHOMAKER & ASSOCIATES, INC. Water Resource and Environmental Consultants 2611 Broadbent Parkway NE Albuquerque, New Mexico prepared for City of Las Cruces Utilities Division New Mexico April 2014

2 SECO SEMI-ANNUAL GROUWATER MONITORING REPORT FOR YEAR 2013 LAS CRUCES FOOTHILLS LAFILL LAS CRUCES, NEW MEXICO prepared by Annie M. McCoy, CPG Roger Peery, CPG JOHN SHOMAKER & ASSOCIATES, INC. Water-Resource and Environmental Consultants 2611 Broadbent Parkway NE Albuquerque, New Mexico prepared for Las Cruces Utilities, New Mexico April 3, 2014

3 JSAI ii SECO SEMI-ANNUAL GROUWATER MONITORING REPORT FOR YEAR 2013, LAS CRUCES FOOTHILLS LAFILL, LAS CRUCES, NEW MEXICO EXECUTIVE SUMMARY At Las Cruces Foothills Landfill, monitor wells MW-1 through MW-4 have been sampled at least 25 times since 1999, MW-5 through MW-7 have been sampled at least 17 times since 2003, and MW-8 and MW-9 have been sampled 7 times since 2010, establishing baseline conditions and defining the extent of groundwater contamination at the site based on Assessment Monitoring Levels (AMLs) of constituents of concern. The primary constituents of concern are PCE, TCE, methylene chloride, and trichlorofluoromethane. The occurrences of PCE, TCE, methylene chloride, and trichlorofluoromethane in monitor wells are likely related to leachate derived from Las Cruces Foothills Landfill. Contaminant transport mechanisms appear to be active in the vadose zone, and controlled by a clay-rich horizon that lies beneath Las Cruces Foothills Landfill. The driving force for contaminant transport in groundwater is the hydraulic gradient. Downgradient contaminant migration in the groundwater is limited by a relatively flat hydraulic gradient west of the Jornada Horst, and historical PCE and TCE concentration trends in downgradient monitor wells MW-5 and MW-6 do not indicate that the plume is moving. In 2013, monitor wells MW-1 through MW-9 were sampled in June 2013, and MW-1, MW-2, MW-3, MW-4, and MW-7 were sampled in December For monitor wells that were sampled in both June and December, parameter concentrations varied little between the two sampling events and in some cases, concentrations were slightly lower in December. Distribution of PCE and TCE concentrations detected in the groundwater monitoring network are illustrated on Figures 4 and 7. The nature and extent of groundwater contamination have been determined by the monitoring network. JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

4 JSAI iii CONTENTS page EXECUTIVE SUMMARY... ii 1.0 INTRODUCTION Background Information Previous Site Reports Prepared by JSAI MONITOR WELLS PURGING A WATER-LEVEL MEASUREMENTS GROUWATER SAMPLING Well Purging Sampling Monitor Wells MW-1 through MW RESULTS Direction of Groundwater Flow and Hydraulic Gradient Background and Baseline Concentrations Summary of Parameters Exceeding the Assessment Monitoring Level (AML) Historical PCE Concentrations PCE Concentrations Historical and 2013 TCE Concentrations Historical and 2013 Methylene Chloride Concentrations Historical and 2013 Trichlorofluoromethane Concentrations Historical and 2013 Total Phenolics Concentrations Historical and 2013 Total Iron Concentrations Additional Parameters Detected in Monitor Well MW NATURE A EXTENT OF GROUWATER CONTAMINANTS Sources of PCE, TCE, and Methylene Chloride Sources of Contaminants Detected at Assessment Monitor Wells MW-8 and MW PCE TDS and chloride CONTAMINANT TRANSPORT MECHANISMS CONCLUSIONS A RECOMMEATIONS REFERENCES...21 JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

5 JSAI iv TABLES page Table 1. Average depth to water and water column, screen interval, pump setting, and pump type installed in monitor wells MW-1 through MW-7, Las Cruces Foothills Landfill, Las Cruces, New Mexico... 5 Table 2. Average depth to water and water column, screen interval, pump setting, and pump type installed in assessment monitor wells MW-8 and MW-9, Las Cruces Foothills Landfill, Las Cruces, New Mexico... 6 Table 3. Pre-sampling event purging schedule for 2013 sampling events at monitor wells MW-1 through MW-9, Las Cruces Foothills Landfill, Las Cruces, New Mexico... 7 Table 4. Water-level measurements for 2013 sampling events at monitor wells MW-1 through MW-9, Las Cruces Foothills Landfill, Las Cruces, New Mexico... 8 Table 5. Summary of parameters that were detected above the AML in monitor wells at Las Cruces Foothills Landfill, 2013, Las Cruces, New Mexico JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

6 JSAI v ILLUSTRATIONS (follow text) Figure 1. Aerial photograph showing locations of Las Cruces Foothills Landfill, monitor wells, groundwater elevation contours, and direction of groundwater flow in June Figure 2. Aerial photograph showing locations of Las Cruces Foothills Landfill, monitor wells, groundwater elevation contours, and direction of groundwater flow in December Figure 3. Graphs showing water-level elevations versus time for monitor wells MW-1, MW-2, MW-3, MW-4, MW-5, MW-6, MW-7, MW-8, and MW-9, Las Cruces Foothills Landfill, New Mexico. Figure 4. Graph showing PCE concentrations versus time for monitor wells MW-1 through MW-9, Las Cruces Foothills Landfill, New Mexico. Figure 5. Site map showing concentration contours of PCE in groundwater, June 25 and 26, 2013, Las Cruces Foothills Landfill, New Mexico. Figure 6. Site map showing concentration contours of PCE in groundwater, December 19, 2013, Las Cruces Foothills Landfill, New Mexico. Figure 7. Graph showing TCE concentrations versus time for monitor wells MW-1 through MW-9, Las Cruces Foothills Landfill, New Mexico. Figure 8. Site map showing concentration contours of TCE in groundwater, June 25 and 26, 2013, Las Cruces Foothills Landfill, New Mexico. Figure 9. Site map showing concentration contours of TCE in groundwater, December 19, 2013, Las Cruces Foothills Landfill, New Mexico. Figure 10. Graph showing methylene chloride concentrations versus time for monitor wells MW-2, MW-4, and MW-7, Las Cruces Foothills Landfill, New Mexico. Figure 11. Graph showing trichlorofluoromethane concentrations versus time for monitor wells MW-1 through MW-9, Las Cruces Foothills Landfill, New Mexico. Figure 12. Graph showing total iron concentrations versus time for monitor wells MW-1 through MW-9, Las Cruces Foothills Landfill, New Mexico. Figure 13. Piper diagram showing hydrogeochemical classification of groundwater sampled between December 2005 and 2013 at Las Cruces Foothills Landfill monitor wells, and geothermal groundwater in the area, Las Cruces, New Mexico. Figure 14. Aerial photograph showing Las Cruces Foothills Landfill monitor wells and groundwater elevation contours in December Figure 15. Aerial photograph showing locations of existing monitor wells, faults in the subsurface, line of schematic geologic cross-section A-A, and bedrock high, Las Cruces Foothills Landfill, New Mexico. Figure 16. West to east hydrogeologic cross-section, Las Cruces Foothills Landfill, New Mexico. JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

7 JSAI vi APPEICES (follow illustrations) Appendix A. Summary of water-level measurements from monitor wells MW-1 through MW-9, Las Cruces Foothills Landfill, Las Cruces, New Mexico Appendix B. Baseline and background monitoring data for monitor wells MW-1 through MW-9, Las Cruces Foothills Landfill, Las Cruces, New Mexico Appendix C. Copies of laboratory reports for the June 25 and 26, 2013 and December 19, 2013 sampling events. JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

8 JSAI vii ABBREVIATIONS AML BLM CAL DBCP EDB EPA F Fig(s). ft ft amsl ft bgl ft bmp ft/ft gpm gw GWPS GWQB JSAI mg/l MW NMED NMSU PCB PCE PQL PSTB PVC SWB TCE USGS VOCs assessment monitoring level Bureau of Land Management corrective action level 1,2-dibromo-3-chloropropane ethylene dibromide Environmental Protection Agency degrees Fahrenheit Figure(s) feet/foot feet above mean sea level feet below ground level feet below measuring point feet per foot gallons per minute groundwater groundwater protection standard Ground Water Quality Bureau John Shomaker & Associates, Inc. milligrams per liter monitor well New Mexico Environment Department New Mexico State University polychlorinated biphenyl tetrachloroethene practical quantitation limit petroleum storage tank bureau polyvinyl chloride Solid Waste Bureau trichloroethene U.S. Geological Survey volatile organic compounds JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

9 JSAI SECO SEMI-ANNUAL GROUWATER MONITORING REPORT FOR YEAR 2013, LAS CRUCES FOOTHILLS LAFILL, LAS CRUCES, NEW MEXICO 1.0 INTRODUCTION Las Cruces Foothills Landfill, owned and operated by the City of Las Cruces, has been undergoing site closure. The City of Las Cruces Utilities Department contracted with John Shomaker & Associates, Inc. (JSAI) to oversee groundwater monitoring activities to fulfill the requirements of the New Mexico Environment Department Solid Waste Bureau (NMED/SWB) regulations (NMAC ). Presented in this report are the following: Results of the year 2013 sampling events (monitor wells MW-1 through MW-9 on June 25 and 26, 2013; MW-1 through MW-4, and MW-7, on December 19, 2013), and summary of past sampling. Background values for each constituent from upgradient monitor well MW-3 calculated using analytical results from all five 1999 sampling events, and the May 2000 sampling event. Baseline values for each constituent from monitor wells MW-1, MW-2, MW-3, and MW-4, calculated using analytical results from all 1999 sampling events, and the May 2000 sampling event. Baseline values for each constituent from monitor wells MW-5, MW-6, and MW-7, calculated using analytical results from all 2003 sampling events, and the December 2004 sampling event. Baseline values for each constituent from monitor wells MW-8 and MW-9, calculated using analytical results from the December 2010 sampling event, and all 2011 sampling events. Demonstration of source for constituents detected above the groundwater protection standard (GWPS) or assessment monitoring level (AML). Recommended strategy for continued monitoring requirements. Las Cruces Foothills Landfill is located east of Las Cruces city limits in Section 11 of Township 23 South, Range 2 East, at the east end of East Lohman Avenue (Fig. 1).

10 JSAI Background Information Las Cruces Foothills Landfill was in operation for approximately 15 years, from 1980 to There are no precise records of volume and types of waste deposited at the landfill, although, the fill material is approximately 40 ft below current surface grade and consists of household and construction waste. There are no records of hazardous waste delivered to this landfill. The landfill has been capped with a low hydraulic conductivity protective cover and recontoured. Currently, the landfill has a groundwater monitoring system consisting of nine monitor wells (MW-1 through MW-9). The first groundwater monitor well, MW-1, was installed in Monitor wells MW-2, MW-3, and MW-4 were installed during January 1999, and MW-5, MW-6, and MW-7 were installed during March and April 2003, to fulfill the requirements of 20 NMAC 9.1 Part 1 Subpart VIII, Section 802. Monitor wells MW-8 and MW-9 were installed in September Monitor well locations are shown on Figure 1. The City equipped MW-1, MW-2, MW-3, and MW-4 with dedicated pumps prior to the June 2001 sampling event in order to reduce the opportunity for contamination to be introduced into the wells during the purging and sampling process. Monitor wells MW-5, MW-6, and MW-7 were equipped with dedicated pumps prior to their first sampling event in July 2003, and MW-8 and MW-9 were equipped with dedicated pumps prior to their first sampling event in December The depth to groundwater beneath the landfill is approximately 400 ft, and the climate is considered semi-arid to arid with approximately 9.27 inches of precipitation per year (New Mexico State University (NMSU) weather station, period of record 1959 to 2012). The evaporation rate is almost 10 times the precipitation rate. The type of material beneath the landfill consists of semi-consolidated to very well-consolidated sand, silt, and clay. Observations during monitor-well drilling and analysis of geophysical logs from MW-2, located at the west end (downgradient) of the landfill, indicated a strange odor in the drilling fluid when drilling at a depth of 455 feet below ground level (ft bgl). JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

11 JSAI Previous Site Reports Prepared by JSAI JSAI prepared the report Results from installation of ground-water monitoring system, and proposed ground-water monitoring plan, Las Cruces Landfill, Las Cruces, New Mexico (Finch, 1999) for the City of Las Cruces in support of landfill closure documentation required by the NMED/SWB. The Finch (JSAI, 1999) report describes details about the installation of the groundwater monitoring system, the hydrogeologic setting, and the groundwater monitoring plan (to fulfill requirements of 20 NMAC 9.1 Part 1 Subpart VIII, Section 803.A through E). The NMED/SWB approved the proposed groundwater monitoring plan on May 10, The detection-monitoring program was completed, and baseline and background concentrations were established for monitor wells MW-1 through MW-4. The NMED/SWB provided written approval of a semi-annual sampling schedule and alternate parameter list for monitor wells MW-1 through MW-4 in July The NMED/SWB provided written approval of an annual sampling schedule for MW-1 through MW-7 and alternate parameter list in February In December 2008, MW-1 through MW-7 were sampled for all parameters in the Groundwater Monitoring Parameter List Subsections A through C (NMAC ). The NMED/SWB provided written approval of an alternate parameter list for MW-1 through MW-7 in October In April 2012, the NMED/SWB provided written approval of the City s request to not sample MW-1 and MW-2 in 2012, as they are directly upgradient of MW-5 and MW-6 and may be redundant for monitoring purposes. The groundwater monitoring plan was amended in March 2009 based on the installation of three additional monitor wells in 2003, sampling methods developed with dedicated submersible pumps in each monitor well, previously-approved alternate sampling schedules and parameter lists, and the NMED/SWB request to collect a vadose-zone gas sample from MW-7. JSAI prepared the following groundwater monitoring reports for the City of Las Cruces, which were submitted to the NMED/SWB: Annual ground-water monitoring report for year 2000, Las Cruces Landfill, Las Cruces, New Mexico (Peery and Armour, 2001) Annual ground-water monitoring report for year 2001, Las Cruces Landfill, Las Cruces, New Mexico (Peery and McCoy, 2002) Annual ground-water monitoring report for year 2002, Las Cruces Landfill, Las Cruces, New Mexico (Peery and McCoy, 2003) Annual ground-water monitoring report for year 2003, Las Cruces Landfill, Las Cruces, New Mexico (Peery and McCoy, 2004) JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

12 JSAI 4 Annual ground-water monitoring report for year 2004, Las Cruces Landfill, Las Cruces, New Mexico (Peery and McCoy, 2005) Annual ground-water monitoring report for year 2005, Las Cruces Landfill, Las Cruces, New Mexico (McCoy and Peery, 2006) Annual ground-water monitoring report for year 2006, Las Cruces Landfill, Las Cruces, New Mexico (McCoy and Peery, 2007; an amendment letter for monitor well MW-4, which was sampled late due to a pump problem, was submitted to NMED/SWB on August 6, 2007) Annual ground-water monitoring report for year 2007, Las Cruces Landfill, Las Cruces, New Mexico (McCoy and Peery, 2008) Annual groundwater monitoring report for year 2008, and proposed reduced parameter list, Las Cruces Foothills Landfill, Las Cruces, New Mexico (McCoy and Peery, 2009) Annual groundwater monitoring report for year 2009, Las Cruces Foothills Landfill, Las Cruces, New Mexico (McCoy and Peery, 2010) Annual groundwater monitoring report for year 2010, Las Cruces Foothills Landfill, Las Cruces, New Mexico (McCoy and Peery, 2011) Annual groundwater monitoring report for year 2011, Las Cruces Foothills Landfill, Las Cruces, New Mexico (McCoy and Peery, 2012) Annual groundwater monitoring report for year 2012, Las Cruces Foothills Landfill, Las Cruces, New Mexico (McCoy and Peery, 2012) First semi-annual groundwater monitoring event of the 2013 monitoring period for Las Cruces Foothills Landfill (letter report from A. McCoy to J. Dyer, NMED/SWB, Permitting Section, September 17, 2013) 2.0 MONITOR WELLS Monitor wells MW-1 through MW-7 were completed to depths ranging from 340 to 464 ft bgl along the western, eastern, and southern perimeters of Las Cruces Foothills Landfill, and within 1,000 ft of the western and southern perimeters (Fig. 1). The monitor wells have 20- to 60-ft screen intervals that either span the water table or are below the water table (Table 1). Dedicated submersible pumps manufactured by Grundfos were installed in MW-1, MW-2, MW-3, and MW-4 in June 2001, and in MW-5, MW-6, and MW-7 in June Drop-pipes for MW-1, MW-2, MW-5, MW-6, and MW-7 consist of 3/4-inch diameter, schedule 40 stainless steel. Stainless steel drop-pipe was used for these wells because of the high temperature of the groundwater. Drop-pipes for MW-3 and MW-4 consist of 1-inch diameter, schedule 80 PVC. JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

13 JSAI 5 Table 1. Average depth to water and water column, screen interval, pump setting, and pump type installed in monitor wells MW-1 through MW-7, Las Cruces Foothills Landfill, Las Cruces, New Mexico monitor well average depth to water, ft bmp well depth, ft bgl average water column, ft screen interval, ft bgl schd. 40 PVC casing diameter (OD), in. pump setting, ft bgl Grundfos pump MW (20) SQE10C-340NE MW (40) SQE10C-340NE MW (40) SQE05B-290NE MW (40) SQE10C-340NE MW (60) Redi-Flo3-380 MW (60) Redi-Flo3-380 MW (60) Redi-Flo3-380 ft bmp - feet below measuring point ft bgl - feet below ground level OD - outside diameter Assessment monitor wells MW-8 and MW-9 were completed to depths of 430 ft bgl and 415 ft bgl, respectively, in September 2010 to verify the limits of Las Cruces Foothills Landfill contaminant plume to the south and west of the landfill. Assessment monitor well MW-8 was completed about 1,600 ft southeast of MW-7, and MW-9 was completed about 1,700 ft west of MW-6 (Fig. 1). The monitor wells have 60-ft screen intervals that either span the water table or are below the water table (Table 2). Dedicated submersible pumps manufactured by Grundfos were installed in MW-8 and MW-9 in December Drop-pipes for MW-8 and MW-9 consist of 3/4-inch diameter, schedule 40 stainless steel. Stainless steel drop-pipe was used for these wells because of the high temperature of the groundwater. JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

14 JSAI 6 Table 2. Average depth to water and water column, screen interval, pump setting, and pump type installed in assessment monitor wells MW-8 and MW-9, Las Cruces Foothills Landfill, Las Cruces, New Mexico monitor well average depth to water, ft bmp well depth, ft bgl average water column, ft screen interval, ft bgl schd. 80 PVC casing diameter (OD), in. pump setting, ft bgl Grundfos pump MW (60) SQE-410 MW (60) SQE-410 ft bmp - feet below measuring point ft bgl - feet below ground level OD - outside diameter 3.0 PURGING A WATER-LEVEL MEASUREMENTS Due to low yield and slow rate of recovery, monitor wells MW-1 through MW-7 were purged about 1 week prior to sampling (Table 3). Additional purging of these wells was performed on the day of sampling to the extent possible based on drawdown. Due to the effects of the extremely high-temperature groundwater on the operation of the pump, it takes several hours to purge MW-8 while allowing the pump to cool for 20-minute intervals. For this reason, MW-8 was also purged about 1 week prior to sampling. Monitor well MW-9 produces sufficient water to be purged immediately prior to sampling. Water-level measurements were made prior to purging the wells in June and December Measurements were made to the nearest 0.01 ft with a wire-line sounder. Water-level measurements were referenced from the top of casing at a labeled measuring point. Waterlevel measurements for the year 2013 are summarized in Table 4, and past water-level measurements are presented in Appendix A. JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

15 JSAI 7 Table 3. Pre-sampling event purging schedule for 2013 sampling events at monitor wells MW-1 through MW-9, Las Cruces Foothills Landfill, Las Cruces, New Mexico monitor well date purged pumping rate during purging, gpm duration of purging, min MW-1 MW-2 MW-3 MW-4 6/18/ a 12/12/ a 6/19/ /12/ /18/ a 12/12/ a 6/19/ /12/ MW-5 6/19/ MW-6 6/18/ MW-7 6/19/ /12/ a MW-8 6/18/ MW-9 6/26/ pumped dry gpm - gallons per minute min - minutes JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

16 JSAI 8 Table 4. Water-level measurements for 2013 sampling events at monitor wells MW-1 through MW-9, Las Cruces Foothills Landfill, Las Cruces, New Mexico monitor well date top of casing elevation, ft amsl depth to water, ft bmp water-level elevation, ft amsl MW-1 MW-2 MW-3 MW-4 6/18/13 4, , /12/13 4, , /19/13 4, , /12/13 4, , /18/13 4, , /12/13 4, , /19/13 4, , /12/13 4, , MW-5 6/19/13 4, , MW-6 6/18/13 4, , MW-7 6/19/13 4, , /12/13 4, , MW-8 6/18/13 4, , MW-9 6/26/13 4, , elevation is top of sounding tube (sounding tube is 0.42 ft below surveyed top of MW-5 well vault elevation) 2 elevation is top of sounding tube (sounding tube is 0.35 ft below surveyed top of MW-6 well vault elevation) 3 elevation is top of sounding tube (sounding tube is 0.35 ft below surveyed top of MW-7 well vault elevation) 4 surveyed top of sounding tube ft bmp - feet below measuring point ft amsl - feet above mean sea level JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

17 JSAI GROUWATER SAMPLING On June 25 and 26, 2013, Las Cruces Foothills Landfill monitor wells MW-1 through MW-9 were sampled by Las Cruces Water Quality Laboratory staff. On December 19, 2013, MW-1 through MW-4 and MW-7 were sampled by City of Las Cruces Water Quality Laboratory staff. During the 2013 semi-annual sampling events, groundwater samples were collected in bottles with appropriate preservatives provided by Hall Environmental Analysis Laboratories, Inc. (Hall) of Albuquerque, New Mexico. Samples were placed on ice, and chain-of-custody protocol was followed. 4.1 Well Purging Dedicated submersible pumps were used to produce water from each well. Due to low yield and slow rate of recovery, monitoring wells MW-1 through MW-8 were purged about 1 week prior to sampling. Additional purging of these wells was performed on the day of sampling to the extent possible based on drawdown. MW-9 was only purged on the day of sampling. For details on well purging, see Section 3.0 and Table Sampling Monitor Wells MW-1 through MW-9 On June 25 and 26, 2013, samples from monitor wells MW-1 through MW-9 were submitted to Hall for analysis according to the reduced parameter list submitted by JSAI to NMED/SWB on October 12, 2009, and approved by NMED/SWB on October 13, 2009, including major-ion chemistry, nitrates, metals and other inorganics, total phenolics, total organic carbon, and volatile organic compounds (VOCs). On December 19, 2013, samples from monitor wells MW-1 through MW-4 and MW-7 were submitted to Hall for analysis according to the reduced parameter list approved by NMED/SWB on October 13, Copies of laboratory reports for 2013 sampling events are provided in Appendix C. Note that MW-1 and MW-2 are directly upgradient of MW-5 and MW-6 and these two pairs of monitor wells may be redundant for monitoring purposes; thus, MW-1 and MW-2 were substituted for MW-5 and MW-6 in the December 2013 sampling event. JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

18 JSAI RESULTS The City of Las Cruces has performed at least 25 sampling events at monitor wells MW-1 through MW-4 since January 1999, when the groundwater monitoring system was installed (MW-1 was also sampled five times between 1990 and 1996). These sampling events included analysis of parameters required for monitoring at municipal landfills (NMED/SWB regulations Section 1100, tables I and II; NMAC Subsections A, B, and C). The City has performed at least 17 sampling events at monitor wells MW-5 through MW-7 since July 2003, including analysis according to NMED/SWB regulations Section 1100, tables I and II; and NMAC Subsections A, B, and C. The City has performed 7 sampling events at monitor wells MW-8 and MW-9 since December 2010, including analysis according to NMAC Subsections A, B, and C. Review of the 2013 laboratory results for monitor wells MW-1 through MW-9 did not reveal any anomalies in the dataset. 5.1 Direction of Groundwater Flow and Hydraulic Gradient Based on the depth-to-water measurements collected in December 2013, the direction of groundwater flow beneath the landfill remains west-southwest. This is similar to the direction of groundwater flow reported by JSAI during previous sampling events. Groundwater elevation contours and direction of groundwater flow in June 2013 are presented in Figure 1, and groundwater elevation contours and direction of groundwater flow in December 2013 are presented in Figure 2. The hydraulic gradient beneath the landfill was about ft/ft in June 2013 and ft/ft in December 2013, compared to ft/ft in December 2012, and ft/ft in December Graphs showing the time-series trend in water levels for the monitor wells are presented in Figure 3. The average linear groundwater flow velocity calculated using a version of Darcy s Law (method defined in June 21, 2008, letter from James Dyer of NMED/SWB), assuming a hydraulic conductivity value of 0.2 ft/day for the alluvium over the Jornada Horst, and an effective porosity of 0.2, is ft/day. It is interesting to note that the groundwater elevation at MW-9 is generally higher than the groundwater elevation at MW-6 (Figs. 2 and 3). This information, as well as water-quality results discussed below, suggests upwelling of geothermal groundwater near MW-9. It has also been observed that air discharges from the top of casing at MW-9. JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

19 JSAI 11 The water levels in monitor wells MW-1, MW-2, MW-4, and MW-7 declined by 4.92 to 5.66 ft between December 2012 and December 2013 (Fig. 3). The water level in upgradient monitor well MW-3 rose by 1.75 ft between December 2012 and December Water levels in monitor wells MW-5 and MW-6 declined by 2.32 ft and 6.85 ft, respectively, between June 2012 and June Water-level declines since December 2011 in MW-1, MW-2, MW-5, and MW-6 represent a reversal of a general increasing trend in these wells since Groundwater elevation contours define a groundwater mound between MW-1 and MW-5 (Fig. 1). Based on a comparison of water levels in MW-1 and MW-5, and in MW-5 and MW-6, this mound formed between December 2012 and June Background and Baseline Concentrations According to NMAC, background concentrations shall be determined from a well that has not been affected by a release from the landfill. The average concentration for each parameter sampled from hydraulically upgradient monitor well MW-3 was used to establish background values. As specified in E(3) NMAC, if the background concentration is below the practical quantitation limit (PQL), the PQL may be used to establish background. The established background concentrations for each parameter sampled, and corresponding standard deviations, are provided in Appendix B on the spreadsheet for MW-3 (last two columns in spreadsheet). Baseline concentrations were determined for MW-1, MW-2, and MW-4 through MW-9 in the same manner that background concentrations were determined for upgradient monitor well MW-3. According to E(1) NMAC, background and baseline concentrations for each parameter sampled from each well must be established from the dataset listed in Appendix B using at least four sampling events during the first semi-annual event, and at least one additional sampling during the subsequent semi-annual event. For MW-1 through MW-4, JSAI determined background and baseline concentrations by using the data from the five detection sampling events in 1999 (four events for MW-1), and the May 2000 detection sampling event. For MW-5, MW-6, and MW-7, baseline concentrations were established using the six sampling events in 2003 and the sampling event in For MW-8 and MW-9, baseline concentrations were established using the December 2010 sampling event, and the four sampling events in The background and baseline concentrations for each monitor well, and corresponding standard deviations, are presented in Appendix B (last two columns in spreadsheets). JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

20 JSAI Summary of Parameters Exceeding the Assessment Monitoring Level (AML) In June and December 2013, several inorganic and organic parameters exceeded the AML, as defined using the flowchart prepared by NMED/SWB (last revision 12/30/10), and direction by NMED/SWB Project Manager James Dyer, who stated in a June 21, 2008 letter that only Subsection A parameters need to have AMLs or CALs established. A list of these parameters for each monitor well, and corresponding AMLs, is shown in Table Historical PCE Concentrations PCE concentrations from each sampling event are presented in Figure 4. PCE concentrations have been at or above the AML of mg/l in MW-1 and MW-2 in each sampling event, except in MW-2 in September 1999 and December 2004 (Fig. 4). Historically, PCE concentrations have ranged from to mg/l in MW-1, and from to mg/l in MW-2. The PCE concentration in upgradient monitor well MW-3 was above the AML in the first sampling event in January 1999, but has been below laboratory detection limits in each subsequent sampling event (indicating possible laboratory error in the January 1999 analysis). PCE concentrations have been above the AML in MW-4, MW-5, MW-6, and MW-7 in each sampling event, except MW-4 and MW-5 in December 2004 (indicating possible laboratory error in the December 2004 analysis). Historically, PCE concentrations have ranged from < to mg/l in MW-4, <0.005 to mg/l in MW-5, to mg/l in MW-6, and to mg/l in MW-7. PCE has been detected at concentrations below the AML in MW-1 in each sampling event, except the first sampling event at the well, when PCE was below the laboratory detection limit. PCE concentrations have been below laboratory detection limits in MW-9 in each sampling event. In summary, PCE concentrations in MW-1 through MW-6 have exceeded AML by less than mg/l, and PCE concentrations in MW-7 have exceeded AML by less than mg/l PCE Concentrations PCE concentrations ranged from < to mg/l in MW-3 through MW-9 in PCE concentrations were above the GWPS of mg/l in MW-1, MW-4, MW-6, and MW-7 in June and December 2013 (Figs. 4 through 6; Table 5). PCE concentrations were above the AML of mg/l in MW-1, and MW-4 through MW-7, and at the AML in MW-2 in PCE concentrations were below the laboratory detection limit of mg/l in MW-3 and MW-9 in Concentration contours for PCE in groundwater at the site in June 2013 are presented in Figure 5, and PCE contours in December 2013 are presented in Figure 6. JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

21 JSAI 13 Table 5. Summary of parameters that were detected above the AML in monitor wells at Las Cruces Foothills Landfill, 2013, Las Cruces, New Mexico monitor well sampling event parameter units GWPS CAL AML result MW-1 MW-2 6/25/13 tetrachloroethene (PCE) 1 mg/l /19/13 tetrachloroethene (PCE) 1 mg/l /25/13 tetrachloroethene (PCE) 1 mg/l /19/13 tetrachloroethene (PCE) 1 mg/l /25/13 tetrachloroethene (PCE) 1 mg/l /25/13 trichloroethene (TCE) 1 mg/l /25/13 methylene chloride 1 mg/l MW-4 6/25/13 trichlorofluoromethane 1 mg/l na na b /19/13 tetrachloroethene (PCE) 1 mg/l /19/13 trichloroethene (TCE) 1 mg/l /19/13 methylene chloride 1 mg/l MW-5 6/26/13 tetrachloroethene (PCE) 1 mg/l MW-6 6/26/13 tetrachloroethene (PCE) 1 mg/l /26/13 tetrachloroethene (PCE) 1 mg/l /26/13 trichloroethene (TCE) 1 mg/l MW-7 6/26/13 trichlorofluoromethane 1 mg/l na na b /19/13 tetrachloroethene (PCE) 1 mg/l MW-9 12/19/13 trichloroethene (TCE) 1 mg/l /19/13 trichlorofluoromethane 1 mg/l na na b /26/13 total dissolved solids mg/l 1,000 1, ,600 6/26/13 chloride mg/l hazardous b 95 percent increase over PQL bold text indicates concentrations that exceed the AML AML - assessment monitoring level GWPS - groundwater protection standard CAL - corrective action level, equal to GWPS ( B NMAC) mg/l - milligrams per liter na - no GWPS for this parameter PQL - practical quantitation limit JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

22 JSAI 14 In summary, PCE concentrations in MW-1, and MW-4 through MW-7 exceeded the AML by less than mg/l in Notable trends in PCE concentrations include general decreasing trends in MW-2 and MW-6 since December 2009 (Fig. 4) Historical and 2013 TCE Concentrations Trichloroethene (TCE) concentrations from each sampling event are presented in Figure 7. TCE concentrations have been below the AML of mg/l in MW-1, MW-2, upgradient monitor well MW-3, MW-5, MW-6, MW-8, and MW-9 in each sampling event. TCE concentrations have been below laboratory detection limits in upgradient monitor well MW-3 in each sampling event. TCE concentrations have ranged from to mg/l in MW-4 between December 2005 and 2013, exceeding the AML in each sampling event, except December TCE has been on a general increasing trend in MW-4 since January 1999, but concentrations have been relatively stable since December TCE concentrations have ranged from to mg/l in MW-7 between August 2003 and 2013, exceeding the AML in each sampling event except July 2003 and December TCE concentrations have exceeded the AML by less than mg/l in MW-4 and MW-7, and concentrations have remained relatively stable since December Concentration contours for TCE in groundwater at the site in June 2013 are presented in Figure 8, and TCE contours in December 2013 are presented in Figure Historical and 2013 Methylene Chloride Concentrations Methylene chloride concentrations have been below the AML of mg/l in MW-1, MW-2, upgradient monitor well MW-3, and MW-5 through MW-9 in each sampling event. Methylene chloride concentrations have been below laboratory detection limits in upgradient monitor well MW-3 and MW-5 through MW-9 in each sampling event. Methylene chloride concentrations have ranged from to mg/l in MW-4 between December 2005 and 2013, exceeding the GWPS of mg/l. Methylene chloride concentrations in MW-4 have exceeded the AML by less than mg/l, but are on a general increasing trend (Fig. 10). JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

23 JSAI Historical and 2013 Trichlorofluoromethane Concentrations Trichlorofluoromethane concentrations for monitor wells in which trichlorofluoromethane has been detected above the PQL of mg/l (MW-2, MW-4, and MW-7) are presented in Figure 11. Historically, trichlorofluoromethane concentrations have been below laboratory detection limits in MW-1, upgradient monitor well MW-3, MW-5, MW-6, MW-8, and MW-9. Trichlorofluoromethane concentrations have been above the AML of mg/l (because there is no GWPS for trichlorofluoromethane, the AML is equal to PQL + (0.95 * PQL)) in MW-4 between September 1999 and July 2003, and again in December 2008 and 2010, and June Trichlorofluoromethane concentrations have been above the AML of mg/l in MW-7 in July 2003, and between December 2008 and In summary, trichlorofluoromethane concentrations in MW-4 and MW-7 have exceeded the AML by less than mg/l, and concentrations have remained relatively stable since December Historical and 2013 Total Phenolics Concentrations Total phenolics concentrations were intermittently detected above the GWPS of mg/l in monitor wells MW-1, MW-2, upgradient monitor well MW-3, and MW-4 between January 1999 and September The highest concentration was mg/l, detected in MW-2 in January Total phenolics concentrations have been below laboratory detection limits in MW-1, MW-2, MW-3, and MW-4 in each sampling event since December Total phenolics concentrations have been below laboratory detection limits in MW-5 through MW-9 in each sampling event, except MW-6 in July 2003 (indicating possible laboratory error). Total phenolics were below the laboratory detection limit of mg/l in all monitor wells in Historical and 2013 Total Iron Concentrations Total iron concentrations in each sampling event are presented in Figure 12. Total iron concentrations were detected above the GWPS of 1.0 mg/l in MW-1, MW-2, and upgradient monitor well MW-3 in 1999; in MW-1 in November 2000 and June 2001; and in MW-7 in July Elevated iron concentrations were likely due to slightly turbid water samples, and turbidity has been minimized by the installation of dedicated sampling pumps at MW-1, MW-2, MW-3, and MW-4 in June 2001, and at MW-5, MW-6, and MW-7 in June Total iron concentrations were below the AML in all monitor wells in JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

24 JSAI Additional Parameters Detected in Monitor Well MW-9 Total dissolved solids (TDS) and chloride concentrations exceeded AMLs of 750 mg/l and mg/l, respectively, in June 2013 (Table 5). 6.0 NATURE A EXTENT OF GROUWATER CONTAMINANTS 6.1 Sources of PCE, TCE, and Methylene Chloride PCE has been detected in MW-1, MW-2, and MW-4 through MW-7 at concentrations that exceed the AML of mg/l in each sampling event between January 1999 and 2013 (except for MW-2 in September 1999, and MW-2, MW-4, and MW-5 in December 2004). TCE has been detected at concentrations that exceed the AML of mg/l in MW-4 in each sampling event between December 2005 and 2013 (except December 2012), and in MW-7 in each sampling event between August 2003 and 2013 (except for December 2010). Concentration contour maps for PCE and TCE presented in Figures 5, 6, 8, and 9 define the extent of groundwater contamination at the site in In upgradient monitor well MW-3, PCE and TCE have been below laboratory detection limits of mg/l in each sampling event (except PCE in January 1999, which may be due to laboratory error). The absence of these VOCs in upgradient well MW-3 in 26 consecutive sampling events suggests that these contaminants are associated with the landfill materials. Groundwater monitoring results provide evidence that PCE and TCE are present as dissolved phases in groundwater and no phase-separated sources have been observed. PCE and TCE are associated with solvents commonly used for dry cleaning, paint removal, and degreasing processes. Under anaerobic conditions, the chemical and biological transformation pathway indicates that hexachloroethane breaks down to PCE, which breaks down to TCE, which breaks down to trans-1,2-dichloroethylene, cis-1,2-dichloroethylene, 1,1-dichloroethylene, and vinyl chloride (Barbee, 1994). Over time, PCE typically is biologically transformed to TCE in soils and groundwater under a range of anaerobic and aerobic conditions. The higher temperatures in MW-1, MW-5, and MW-6 may be slowing the biological transformation of PCE to TCE relative to MW-4. Monitor well MW-4 represents an end-member among the landfill monitor wells in terms of JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

25 JSAI 17 temperature (only MW-3 has a cooler temperature than MW-4) and major ion geochemistry (see Fig. 13). Monitor wells MW-4 and MW-7 have the highest TCE concentrations at the landfill, and appear to share the same structural setting, located in a graben east of the Jornada Horst (Figs. 15 and 16). Methylene chloride has been detected in MW-4 above the GWPS of mg/l since Methylene chloride is commonly used as a solvent in paint strippers and removers, and as a metal cleaning and finishing solvent. It is also used as a propellant in aerosols for paints, automotive products, and insect sprays. Trichlorofluoromethane has been detected in MW-7 above the AML of mg/l since December Trichlorofluoromethane was used as a refrigerant and a cleaning/rinsing agent, but U.S. production ended in 1996 due to ozone depletion potential. The occurrences of PCE, TCE, methylene chloride and trichlorofluoromethane in Las Cruces Foothills Landfill monitor wells are probably not due to other contamination plumes in the area (Peery and McCoy, 2003; Peery and McCoy, 2005). In order to identify potential alternative contamination sources, JSAI contacted state and federal agencies including the EPA, U.S. Geological Survey (USGS), NMED/SWB, NMED Groundwater Quality Bureau (GWQB), and NMED Petroleum Storage Tank Bureau (PSTB). According to the NMED/SWB, there are two closed landfill sites located approximately 1 mile from Las Cruces Foothills Landfill. The exact locations of the closed landfills are not known, but they are located to the southwest and downgradient of the existing landfill. Neither of these sites has monitor wells, and both are reported to be owned by the City of Las Cruces (Dan Fuqua, NMED/SWB, oral communication, February 26, 2004). The NMED/GWQB did not have any information on contamination, spills, or monitored discharges near Las Cruces Foothills Landfill (Bart Faris, oral communication, February 26, 2004). According to the NMED/PSTB, there are 39 active leaky underground storage tank sites and 85 sites requiring no further action in the City of Las Cruces, as of February 15, 2011 ( These sites are located over 1 mile downgradient of Las Cruces Foothills Landfill. The contaminated sites identified by EPA and NMED, including the Griggs and Walnut PCE plume, are located at least 1 mile downgradient of Las Cruces Foothills Landfill, and there is no evidence to indicate that the contamination at the landfill is associated with any of these sites (JSAI, 2006). JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

26 JSAI Sources of Contaminants Detected at Assessment Monitor Wells MW-8 and MW PCE PCE has been detected in MW-8 at concentrations below the AML, with a concentration of mg/l in June PCE detections at MW-8 are likely associated with contaminants from Las Cruces Foothills Landfill. PCE and TCE detections at MW-4 and MW-7 provide evidence for contaminant migration southeastward. It is possible that the direction of lateral and vertical leachate migration in the vadose zone is controlling the observed groundwater plume. The observed hydraulic gradient is east to west TDS and chloride TDS and chloride concentrations exceeded AMLs in MW-9 in June 2013 (Table 5). The major ion geochemistry of groundwater sampled at MW-9 is similar to that of geothermal wells at New Mexico State University (Fig. 13). The relatively high groundwater elevation at MW-9, combined with the major ion geochemistry, indicate geothermal upwelling. Thus, elevated TDS and chloride concentrations are naturally-occurring and characteristic of geothermal groundwater in the area. The major ion geochemistry at many of the landfill monitor wells appears to represent mixing between the cool calcium-bicarbonate type groundwater sampled at MW-4 (groundwater in the Santa Fe Group aquifer of the Jornada Basin), and the hot sodium-sulfate type groundwater sampled at MW-9 (geothermal upwelling; Fig. 13). Elevated fluoride and manganese concentrations, and radium-226 and -228 activity in MW-9 in 2011 were also attributed to naturally-occurring variability in groundwater quality, and characteristic of geothermal groundwater in the area (McCoy and Peery, 2012). 7.0 CONTAMINANT TRANSPORT MECHANISMS The driving force for contaminant transport in groundwater is the hydraulic gradient. Figure 14 presents groundwater elevation contours in the area, and shows that the hydraulic gradient west of Las Cruces Foothills Landfill is relatively flat ( ft/ft, compared to ft/ft at the landfill), limiting downgradient contaminant migration. Historical PCE and TCE concentration trends in downgradient monitor wells MW-5 and MW-6 do not indicate that the plume is moving (Figs. 4 and 7). JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

27 JSAI 19 Between 2005 and 2010, rising water-level trends at monitor wells MW-1, MW-2, MW-5, and MW-6 indicated flattening of the hydraulic gradient across the Jornada Horst. The flattening of the hydraulic gradient was likely due to the development of a groundwater mound resulting from a recharge event occurring at the water table directly west of the landfill. Water-level data for 2011 through 2013 show that the increasing trend has reversed. Waterlevel declines at landfill monitor wells may also be influenced by regional pumping in response to persistent drought conditions. Nonetheless, downgradient contaminant migration to the west of the monitoring well network is limited by a relatively flat hydraulic gradient between the Jornada Horst and Interstate 25 (Fig. 14). Groundwater-elevation contours define a groundwater mound between MW-1 and MW-5 (Fig. 1). Based on a comparison of water levels in MW-1 and MW-5, and in MW-5 and MW-6, this mound formed between December 2012 and June Additional water level data are needed to determine whether this mound represents a discrete pulse of recharge, or a continuous source. Analysis of the geology and structures beneath Las Cruces Foothills Landfill shows that contaminant transport mechanisms active in the vadose zone may be responsible for the variation in contaminant concentrations in different landfill monitor wells. For example, PCE concentrations have been elevated in MW-6 in each sampling event. The clay-rich horizon A appears to pinch out just upgradient of MW-6 and may drop contamination at this point. PCE and TCE detections at MW-4 and MW-7 provide evidence for contaminant migration southeastward in the vadose zone. The geology and structure beneath Las Cruces Foothills Landfill are presented in Figures 15 and 16. Concentration contour maps for PCE and TCE presented in Figures 5, 6, 8, and 9 define the extent of groundwater contamination at the site. PCE and TCE were below laboratory detection limits in MW-9 between December 2010 and 2013, helping constrain the extent of contamination at Las Cruces Foothills Landfill to the west of MW-6. PCE was detected at MW-8 in 2013, providing evidence for contaminant migration southeastward, across the groundwater gradient, parallel to the graben containing MW-4, MW-7, and MW-8 (Figs. 5 and 15). JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

28 JSAI CONCLUSIONS A RECOMMEATIONS At Las Cruces Foothills Landfill, monitor wells MW-1 through MW-4 have been sampled at least 25 times since 1999, MW-5 through MW-7 have been sampled at least 17 times since 2003, and MW-8 and MW-9 have been sample 7 times since 2010, establishing baseline conditions and defining the extent of groundwater contamination at the site based on AMLs of constituents of concern. The primary constituents of concern are PCE, TCE, methylene chloride, and trichlorofluoromethane. The occurrences of PCE, TCE, methylene chloride, and trichlorofluoromethane in monitor wells are related to leachate derived from Las Cruces Foothills Landfill. Contaminant transport mechanisms appear to be active in the vadose zone, and controlled by a clay-rich horizon that lies beneath Las Cruces Foothills Landfill. The driving force for contaminant transport in groundwater is the hydraulic gradient. Downgradient contaminant migration in the groundwater is limited by a relatively flat hydraulic gradient west of the Jornada Horst, and historical PCE and TCE concentration trends in downgradient monitor wells MW-5 and MW-6 do not indicate that the plume is moving. Groundwater elevation contours define a groundwater mound between MW-1 and MW-5, which appears to have formed between December 2012 and June Additional data are needed to determine whether this mound represents a discrete pulse of recharge, or a continuous source; therefore, JSAI recommends that water-level measurements be collected at all monitor wells on a semi-annual basis. It is recommended that groundwater monitoring be continued at Las Cruces Foothills Landfill to track the extent and nature of the contaminant plume. Monitor wells MW-3 through MW-7 will be sampled in the first semi-annual event in 2014, which will allow for the comparison of summer and winter sampling results, and monitor wells MW-1 through MW-9 will be sampled in the second semi-annual event in During the first semi-annual event in 2014, monitor wells will be sampled according to the reduced parameter list approved for MW-1 through MW-7 by NMED/SWB on October 13, 2009, which includes major-ion chemistry, nitrates, metals and other inorganics, total phenolics, total organic carbon, and VOCs. During the second semi-annual event in 2014, monitor wells will be sampled according to NMAC Subsections A and C, as it will be 5 years since the approval of the reduced parameter list. The second semi-annual report for 2014 will include a proposed reduced parameter list for continued groundwater monitoring. JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

29 JSAI REFERENCES Barbee, G.C., 1994, Fate of chlorinated aliphatic hydrocarbons in the vadose zone and groundwater: Groundwater Monitoring and Remediation, 1994, vol. 9, No. 1, pp [JSAI] John Shomaker & Associates, Inc., 1999, Results from installation of groundwater monitoring system, and proposed groundwater monitoring plan, Las Cruces Landfill, Las Cruces, New Mexico: consultant s report prepared by Finch, S. T., Jr., of John Shomaker & Associates, Inc. for the City of Las Cruces, 25 p. plus figures and appendices. [JSAI] John Shomaker & Associates, Inc., 2000, Annual groundwater monitoring report, determination of background values, and alternate parameter list request, Las Cruces Landfill, Las Cruces, New Mexico: consultant s report prepared by Finch, S.T., Jr., of John Shomaker & Associates, Inc. for City of Las Cruces, 13 p. plus figs and appendices. [JSAI] John Shomaker & Associates, Inc., 2001, Annual groundwater monitoring report for year 2000, Las Cruces Landfill, Las Cruces, New Mexico: consultant s report prepared by Peery, R. L., and Armour, J., of John Shomaker & Associates, Inc. for the City of Las Cruces, New Mexico, 13 p. plus figures and appendices. [JSAI] John Shomaker & Associates, Inc., 2002, Annual groundwater monitoring report for year 2001, Las Cruces Landfill, Las Cruces, New Mexico: consultant s report prepared by Peery, R. L., and McCoy, A. M., of John Shomaker & Associates, Inc. for the City of Las Cruces, New Mexico, 18 p. plus figures and appendices. [JSAI] John Shomaker & Associates, Inc., 2003, Annual groundwater monitoring report for year 2002, Las Cruces Landfill, Las Cruces, New Mexico: consultant s report prepared by Peery, R. L., and McCoy, A. M., of John Shomaker & Associates, Inc. for the City of Las Cruces, New Mexico, 24 p. plus figures and appendices. [JSAI] John Shomaker & Associates, Inc., 2004, Annual groundwater monitoring report for year 2003, Las Cruces Landfill, Las Cruces, New Mexico: consultant s report prepared by Peery, R. L., and McCoy, A. M., of John Shomaker & Associates, Inc. for the City of Las Cruces, New Mexico, 31 p. plus figures and appendices. [JSAI] John Shomaker & Associates, Inc., 2005, Annual groundwater monitoring report for year 2004, Las Cruces Landfill, Las Cruces, New Mexico: consultant s report prepared by McCoy, A. M., and Peery, R., of John Shomaker & Associates, Inc. for the City of Las Cruces, New Mexico, 21 p. plus figures and appendices. [JSAI] John Shomaker & Associates, Inc., 2006, Annual groundwater monitoring report for year 2005, Las Cruces Landfill, Las Cruces, New Mexico: consultant s report prepared by McCoy, A. M., and Peery, R., of John Shomaker & Associates, Inc. for the City of Las Cruces, New Mexico, 23 p. plus figures and appendices. [JSAI] John Shomaker & Associates, Inc., 2006a, Groundwater-flow and solute-transport model for the Griggs and Walnut Superfund site, Las Cruces, New Mexico: consultant s report prepared by Laura H. Petronis, Steven T. Finch, Jr., and John W. Shomaker of John Shomaker & Associates, Inc., in association with Daniel B. Stephens & Associates, Inc., for the Griggs and Walnut Joint Superfund Project, City of Las Cruces, and Doña Ana County, New Mexico, 53 p. plus figures and appendices. JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

30 JSAI 22 [JSAI] John Shomaker & Associates, Inc., 2007, Annual groundwater monitoring report for year 2006, Las Cruces Landfill, Las Cruces, New Mexico: consultant s report prepared by McCoy, A. M., and Peery, R., of John Shomaker & Associates, Inc. for the City of Las Cruces, New Mexico, 22 p. plus figures and appendices. [JSAI] John Shomaker & Associates, Inc., 2008, Annual groundwater monitoring report for year 2007, Las Cruces Landfill, Las Cruces, New Mexico: consultant s report prepared by McCoy, A. M., and Peery, R., of John Shomaker & Associates, Inc. for the City of Las Cruces, New Mexico, 21 p. plus figures and appendices. [JSAI] John Shomaker & Associates, Inc., 2009, Annual groundwater monitoring report for year 2008, Las Cruces Landfill, Las Cruces, New Mexico: consultant s report prepared by McCoy, A. M., and Peery, R., of John Shomaker & Associates, Inc. for the City of Las Cruces, New Mexico, 30 p. plus figures and appendices. [JSAI] John Shomaker & Associates, Inc., 2010, Annual groundwater monitoring report for year 2009, Las Cruces Landfill, Las Cruces, New Mexico: consultant s report prepared by McCoy, A. M., and Peery, R., of John Shomaker & Associates, Inc. for the City of Las Cruces, New Mexico, 22 p. plus figures and appendices. [JSAI] John Shomaker & Associates, Inc., 2011, Annual groundwater monitoring report for year 2010, Las Cruces Landfill, Las Cruces, New Mexico: consultant s report prepared by McCoy, A. M., Miller, S.A. and Peery, R., of John Shomaker & Associates, Inc. for the City of Las Cruces, New Mexico, 26 p. plus figures and appendices. [JSAI] John Shomaker & Associates, Inc., 2012, Annual groundwater monitoring report for year 2011, Las Cruces Landfill, Las Cruces, New Mexico: consultant s report prepared by McCoy, A. M., and Peery, R., of John Shomaker & Associates, Inc. for the City of Las Cruces, New Mexico, 23 p. plus figures and appendices. [JSAI] John Shomaker & Associates, Inc., 2013, Annual groundwater monitoring report for year 2012, Las Cruces Landfill, Las Cruces, New Mexico: consultant s report prepared by McCoy, A. M., and Peery, R., of John Shomaker & Associates, Inc. for the City of Las Cruces, New Mexico, 22 p. plus figures and appendices. [JSAI] John Shomaker & Associates, Inc., 2013a, First semi-annual groundwater monitoring event of the 2013 monitoring period for Las Cruces Foothills Landfill: consultant s letter report prepared by McCoy, A.M., of John Shomaker & Associates, Inc. to James Dyer, NMED/SWB, Permitting Section, on behalf of the City of Las Cruces, 3 p. plus figures and appendices. Woodward, D.G., and Myers, R.G., 1997, Seismic investigation of the buried horst between the Jornada del Muerto and Mesilla ground-water basins near Las Cruces, Dona Ana County, New Mexico: U.S. Geological Survey Water-Resources Investigations Report , 49 p. JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

31 JSAI ILLUSTRATIONS JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

32 !! East Lohman Ave !!!!!!!!!!!!!!!!!!! MW MW-6 MW ! MW-1 MW ! 3880!!!! 3900 MW LAFILL < !!!! 3940! MW-4!! 3960!!!!! 3980! !!!!! !!!!!! 4040!!!!!!! MW-3 ³ T23S MW landfill well Explanation ,000 2,000 Feet < flow direction water-level elevation contour, ft amsl city limits top of bedrock contour, ft amsl (USGS WRIR ) area where top of bedrock high is above the water table Aerial Photography date: May 2011 Figure 1. Aerial photograph showing locations of Las Cruces Foothills Landfill monitor wells, groundwater elevation contours, and direction of groundwater flow in June JOHN SHOMAKER & ASSOCIATES, INC.

33 3800!! 4000 R02E ³ !! * MW-9 East Lohman Ave. * MW-5 * MW-6!!!!!!!!!!!!!!!!!!! ! MW-1 MW ! 3880!!!! 3900 MW-7 LAFILL <!!!! ! MW-4!! 3960!!!! !!!!! !!!!!! 4040!!!!!!! MW T23S 3920 * MW Explanation ,000 2,000 Feet < landfill well flow direction water-level elevation contour, ft amsl 3800 city limits * not measured top of bedrock contour, ft amsl (USGS WRIR ) area where top of bedrock high is above the water table Aerial Photography date: May 2011 Figure 2. Aerial photograph showing locations of Las Cruces Foothills Landfill monitor wells, groundwater elevation contours, and direction of groundwater flow in December JOHN SHOMAKER & ASSOCIATES, INC.

34 water-level elevation, ft amsl 3,884 3,882 3,880 3,878 3,876 3,874 3,872 3,870 3,868 Las Cruces Foothills Landfill Monitor Well MW-1 temperature temperature, degrees F water-level elevation, ft amsl 3,870 3,868 3,866 3,864 3,862 3,860 3,858 3,856 3,854 Las Cruces Foothills Landfill Monitor Well MW-2 temperature temperature, degrees F 3, , , , water-level elevation, ft amsl 3,850 Las Cruces Foothills Landfill Monitor Well MW ,850 Las Cruces Foothills Landfill Monitor Well MW water-level elevation, ft amsl 3,848 3,846 3,844 3,842 3,840 3,838 3,836 3,834 temperature temperature, degrees F 3,848 3,846 3,844 3,842 3,840 3,838 3,836 3, , , , , Dec-02 Dec-03 Dec-04 Dec-05 Dec-06 Dec-07 Dec-08 Dec-09 Dec-10 Dec-11 Dec-12 Dec-13 Dec-02 Dec-03 Dec-04 Dec-05 Dec-06 Dec-07 Dec-08 Dec-09 Dec-10 Dec-11 Dec-12 Dec-13 Dec-98 Dec-99 Dec-00 Dec-01 Dec-02 Dec-03 Dec-04 Dec-05 Dec-06 Dec-07 Dec-08 Dec-09 Dec-10 Dec-11 Dec-12 Dec-13 Dec-98 Dec-99 Dec-00 Dec-01 Dec-02 Dec-03 Dec-04 Dec-05 Dec-06 Dec-07 Dec-08 Dec-09 Dec-10 Dec-11 Dec-12 Dec-13 4,060 4,058 4,056 4,054 4,052 4,050 4,048 4,046 4,044 Las Cruces Foothills Landfill Monitor Well MW-3 temperature temperature, degrees F water-level elevation, ft amsl 3,951 3,949 3,947 3,945 3,943 3,941 3,939 3,937 3,935 Las Cruces Foothills Landfill Monitor Well MW-4 temperature temperature, degrees F 4, , , , water-level elevation, ft amsl Dec-98 Dec-99 Dec-00 Dec-01 Dec-02 Dec-03 Dec-04 Dec-05 Dec-06 Dec-07 Dec-08 Dec-09 Dec-10 Dec-11 Dec-12 Dec-13 Dec-98 Dec-99 Dec-00 Dec-01 Dec-02 Dec-03 Dec-04 Dec-05 Dec-06 Dec-07 Dec-08 Dec-09 Dec-10 Dec-11 Dec-12 Dec-13 temperature temperature, degrees F 3,926 Las Cruces Foothills Landfill Monitor Well MW ,934 Las Cruces Foothills Landfill Monitor Well MW water-level elevation, ft amsl 3,924 3,922 3,920 3,918 3,916 3,914 3,912 3,910 temperature temperature, degrees F water-level elevation, ft amsl 3,932 3,930 3,928 3,926 3,924 3,922 3,920 3,918 temperature temperature, degrees F 3, , ,906 Dec-02 Dec-03 Dec-04 Dec-05 Dec-06 3, ,854 Las Cruces Foothills Landfill Monitor Well MW ,852 3,850 3,848 3,846 3,844 3,842 3,840 3, Figure 3. Graphs showing water-level elevations versus time for monitor wells MW-1, MW-2, MW-3, MW-4, MW-5, MW-6, MW-7, MW-8, and MW-9, Las Cruces Foothills Landfill, New Mexico. 3, , Dec-09 Mar-10 Jun-10 Sep-10 Dec-10 Mar-11 Jun-11 Sep-11 Dec-11 Mar-12 Jun-12 Sep-12 Dec-12 Mar-13 Jun-13 Sep-13 Dec-13 Dec-07 Dec-08 Dec-09 Dec-10 Dec-11 Dec-12 Dec Dec-09 Mar-10 Jun-10 Sep-10 Dec-10 Mar-11 Jun-11 Sep-11 Dec-11 Mar-12 Jun-12 Sep-12 Dec-12 Mar-13 Jun-13 Sep-13 Dec-13 water-level elevation, ft amsl temperature temperature, degrees F JOHN SHOMAKER & ASSOCIATES, INC.

35 MW-1 MW-2 MW-3 MW-4 MW-5 MW-6 MW-7 MW-8 MW-9 GWPS AML Graph values of mg/l represent sample results below the lab detection limits. GWPS is mg/l. AML is 50 percent of GWPS Dec-98 Dec-99 Dec-00 Dec-01 Dec-02 Dec-03 Dec-04 Dec-05 Dec-06 Dec-07 Dec-08 Dec-09 Dec-10 Dec-11 Dec-12 Dec-13 PCE concentration, mg/l Figure 4. Graph showing PCE concentrations versus time for monitor wells MW-1 through MW-9, Las Cruces Foothills Landfill, New Mexico. JOHN SHOMAKER & ASSOCIATES, INC.

36 3800!! 4000 R02E ³ !! < T23S East Lohman Ave MW MW-6 MW !!!!!!!!!!!!!!!!!!! ! MW-1 MW-2! 0.01!!!! LAFILL MW !!!! 0.011! MW !!!!!!!!!!! <0.0005!!!!!!!!!!!!! MW-3 MW Explanation ,000 2,000 Feet landfill well PCE concentration contour, mg/l = AML = GWPS 3800 city limits top of bedrock contour, ft amsl (USGS WRIR ) area where top of bedrock high is above the water table Aerial Photography date: May 2011 Figure 5. Site map showing concentration contours of PCE in groundwater, June 25 and 26, 2013 Las Cruces Foothills Landfill, New Mexico. JOHN SHOMAKER & ASSOCIATES, INC.

37 3800!! 4000 R02E ³ !! < MW-9 East Lohman Ave. MW MW !!!!!!!!!!!!!!!!!!! ! MW-1 MW-2! 0.01!!!! LAFILL MW-7!!!! 0.011! MW !!!!!!!!!!! <0.0005!!!!!!!!!!!!! MW T23S MW Explanation ,000 2,000 Feet landfill well PCE concentration contour, mg/l = AML = GWPS 3800 city limits top of bedrock contour, ft amsl (USGS WRIR ) area where top of bedrock high is above the water table Aerial Photography date: May 2011 Figure 6. Site map showing concentration contours of PCE in groundwater, December 19, 2013, Las Cruces Foothills Landfill, New Mexico. JOHN SHOMAKER & ASSOCIATES, INC.

38 MW-1 Graph values of mg/l represent sample results below the lab detection limits MW-2 GWPS is mg/l. AML is 50 percent of GWPS MW Dec-98 Dec-99 Dec-00 Dec-01 Dec-02 Dec-03 Dec-04 Dec-05 Dec-06 Dec-07 Dec-08 Dec-09 Dec-10 Dec-11 Dec-12 Dec-13 TCE concentration, mg/l MW-4 MW-5 MW-6 MW-7 MW-8 MW-9 AML GWPS Figure 7. Graph showing TCE concentrations versus time for monitor wells MW-1 through MW-9, Las Cruces Foothills Landfill, New Mexico. JOHN SHOMAKER & ASSOCIATES, INC.

39 3800!! 4000 R02E ³ !! MW-9 <0.001 East Lohman Ave. MW-5 <0.001 MW-6 <0.001!!!!!!!!!!!!!!!!!!!! MW MW ! !!!! MW-7 LAFILL 0.001!!!!! MW !!!!!!!!!!!!!!!!!!!!!!!! MW-3 < T23S MW-8 < Explanation ,000 2,000 Feet landfill well TCE concentration contours, mg/l = AML 3800 city limits top of bedrock contour, ft amsl (USGS WRIR ) area where top of bedrock high is above the water table Aerial Photography date: May 2011 Figure 8. Site map showing concentration contours of TCE in groundwater, June 25 and 26, 2013, Las Cruces Foothills Landfill, New Mexico. JOHN SHOMAKER & ASSOCIATES, INC.

40 3800!! 4000 R02E ³ !! MW-9 * East Lohman Ave. MW-5 * MW-6 *!!!!!!!!!!!!!!!!!!!! MW MW ! !!!! MW-7 LAFILL 0.001!!!!! MW !!!!!!!!!!!!!!!!!!!!!!!! MW-3 < T23S MW-8 * 3900 Explanation ,000 2,000 Feet landfill well TCE concentration contours, mg/l = AML 3800 city limits * not measured top of bedrock contour, ft amsl (USGS WRIR ) area where top of bedrock high is above the water table Aerial Photography date: May 2011 Figure 9. Site map showing concentration contours of TCE in groundwater, December 19, 2013, Las Cruces Foothills Landfill, New Mexico. JOHN SHOMAKER & ASSOCIATES, INC.

41 MW-1 MW-2 MW-3 MW-4 MW-5 Graph values of mg/l represent sample results below the lab detection limits. GWPS is mg/l. AML is 50 percent of GWPS Dec-98 Dec-99 Dec-00 Dec-01 Dec-02 Dec-03 Dec-04 Dec-05 Dec-06 Dec-07 Dec-08 Dec-09 Dec-10 Dec-11 Dec-12 Dec-13 methylene chloride concentration, mg/l MW-6 MW-7 MW-8 MW-9 AML GWPS Figure 10. Graph showing methylene chloride concentrations versus time for monitor wells MW-1 through MW-9, Las Cruces Foothills Landfill, New Mexico. JOHN SHOMAKER & ASSOCIATES, INC.

42 MW-2 MW-4 Graph values of mg/l represent sample results below the lab detection limits. AML is (PQL + (0.95*PQL)) = mg/l. trichlorofluoromethane concentration, mg/l MW Dec-98 Dec-99 Dec-00 Dec-01 Dec-02 Dec-03 Dec-04 Dec-05 Dec-06 Dec-07 Dec-08 Dec-09 Dec-10 Dec-11 Dec-12 Dec-13 AML Figure 11. Graph showing trichlorofluoromethane concentrations versus time for monitor wells MW-2, MW-4 and MW-7, Las Cruces Foothills Landfill, New Mexico. JOHN SHOMAKER & ASSOCIATES, INC.

43 total iron concentration, mg/l (log scale). 1, Graph values of 0.01 mg/l represent sample results below the lab detection limits Dec-98 Dec-99 Dec-00 Dec-01 Dec-02 Dec-03 Dec-04 Dec-05 Dec-06 Dec-07 Dec-08 Dec-09 Dec-10 Dec-11 Dec-12 Dec-13 GWPS is 1.0 mg/l. AML is 75 percent of GWPS. MW-1 MW-2 MW-3 MW-4 MW-5 MW-6 MW-7 MW-8 MW-9 GWPS AML Figure 12. Graph showing total iron concentrations versus time for monitor wells MW-1 through MW-9, Las Cruces Foothills Landfill, Las Cruces, New Mexico. JOHN SHOMAKER & ASSOCIATES, INC.

44 EXPLANATION median gw temp MW F MW F MW F MW F MW F MW F MW F 60 Ca-Mg-SO4-Cl 60 MW F MW F Ca-Mg- HCO3-CO3 40 Na-K- SO4-Cl 20 NMSU geothermal wells Mg SO Na-K-HCO3-CO Ca Na+K HCO3 Cl Figure 13. Piper diagram showing hydrogeochemical classification of groundwater sampled between December 2005 and 2013 at Las Cruces Foothills Landfill monitor wells, and geothermal groundwater in the area, Las Cruces, New Mexico. JOHN SHOMAKER & ASSOCIATES, INC.

45 ! 4000 R02E ³ 3900 ") ") MW-9 * MW-5 * !!!! 3860!!!!!!!! MW-6 * 3880!! 3920 LAFILL!!!!! MW MW !! 4020!!! 4040!!!! MW T23S MW-8 ") 27 ") ") * 3800 ") 26 ") ") ") (17) 0 1,000 2,000 4,000 Feet 3840 ") 3800 Explanation ") municipal well landfill well monitoring well WLE_ water-level elevation contour, ft amsl city limits top of bedrock contour, ft amsl area where top of bedrock high is above the water table * not measured Aerial Photography date: May 2011 Figure 14. Aerial photograph showing Las Cruces Foothills Landfill monitor wells and groundwater elevation contours in December JOHN SHOMAKER & ASSOCIATES, INC.

46 !! 4000 R02E ³ D U ³ A MW-9 T23S 3900 D U MW-5 MW !!!!!!!!!!!!!!!!!!!! MW-1 MW-2!!!!! 3800 LAFILL MW-7!!!!! MW-4!!!!!!! D U! MW-3!!!!!!!!!!! A'!!!!!!! ³ MW U D Explanation 0 1,150 2,300 Feet ³ ³ landfill monitoring well line of section fault in subsurface (referenced from Woodward and Myers (1997)) city limits top of bedrock contour, ft amsl area where top of bedrock high is above the water table Aerial Photography date: May 2011 Figure15.Aerialphotographshowinglocationsofexistingmonitorwels,faultsinthesubsurface,lineofschematic geologiccros-sectiona-a,andbedrock high,lascrucesfoothilslandfil,newmexico. JOHNSHOMAKER& ASSOCIATES,INC.

47 A A West East 4400 MW-3 MW MW-5 MW-2 EXPLANATION MW-9 landfill elevation, feet above mean sea level Hydrogeologic Unit sand and gravel poorly consolidated clay and silt medium-grained moderately consolidated fine-grained consolidated volcaniclastics basalt water-level elevation, June 2013 well with screen section feet 500 horizontal scale 3700 Figure 16. West to east hydrogeologic cross-section, Las Cruces Foothills Landfill, New Mexico. JOHN SHOMAKER & ASSOCIATES, INC.

48 JSAI APPEICES JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

49 JSAI Appendix A. Summary of water-level measurements from monitor wells MW-1 through MW-9, Las Cruces Foothills Landfill, Las Cruces, New Mexico JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

50 JSAI Summary of water-level measurements from monitor wells MW-1 through MW-9, Las Cruces Foothills Landfill, Las Cruces, New Mexico well date top of casing elevation (ft amsl) depth to water (ft bmp) water-level elevation (ft amsl) MW-1 01/11/99 4, , MW-1 04/01/99 4, , MW-1 05/06/99 4, , MW-1 07/07/99 4, , MW-1 09/15/99 4, , MW-1 11/03/99 4, , MW-1 05/18/00 4, , MW-1 06/13/01 4, , MW-1 10/29/01 4, , MW-1 11/06/01 4, , MW-1 03/25/02 4, , MW-1 04/03/02 4, , MW-1 07/12/02 4, , MW-1 09/25/02 4, , MW-1 12/18/02 4, , MW-1 07/15/03 4, , MW-1 12/29/03 4, , MW-1 12/2/04 4, , MW-1 12/14/05 4, , MW-1 12/12/06 4, , MW-1 01/11/08 4, , MW-1 12/23/08 4, , MW-1 12/29/09 4, , MW-1 12/29/10 4, , MW-1 12/27/11 4, , MW-1 12/12/12 4, , MW-1 6/18/13 4, , MW-1 12/12/13 4, , MW-2 01/11/99 4, , MW-2 04/01/99 4, , MW-2 05/06/99 4, , MW-2 07/07/99 4, , MW-2 09/15/99 4, , MW-2 11/03/99 4, , MW-2 05/18/00 4, , MW-2 11/09/00 4, , MW-2 06/13/01 4, , measurement made from ground level ft bmp - feet below measuring point ft amsl - feet above mean sea level JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

51 JSAI Summary of water-level measurements from monitor wells MW-1 through MW-9, Las Cruces Foothills Landfill, Las Cruces, New Mexico (continued) well date top of casing elevation (ft amsl) depth to water (ft bmp) water-level elevation (ft amsl) MW-2 10/29/01 4, , MW-2 11/02/01 4, , MW-2 11/06/01 4, , MW-2 03/25/02 4, , MW-2 04/03/02 4, , MW-2 07/12/02 4, , MW-2 09/25/02 4, , MW-2 12/18/02 4, , MW-2 07/15/03 4, , MW-2 12/29/03 4, , MW-2 12/2/04 4, , MW-2 12/14/05 4, , MW-2 12/12/06 4, , MW-2 01/11/08 4, , MW-2 12/23/08 4, , MW-2 12/29/09 4, , MW-2 12/29/10 4, , MW-2 12/27/11 4, , MW-2 12/12/12 4, , MW-2 6/19/13 4, , MW-2 12/12/13 4, , MW-3 01/11/99 4, , MW-3 04/01/99 4, , MW-3 05/06/99 4, , MW-3 07/07/99 4, , MW-3 09/15/99 4, , MW-3 11/03/99 4, , MW-3 05/18/00 4, , MW-3 11/09/00 4, , MW-3 06/13/01 4, , MW-3 10/29/01 4, , MW-3 11/02/01 4, , MW-3 11/06/01 4, , MW-3 03/25/02 4, , MW-3 04/03/02 4, , MW-3 07/12/02 4, , MW-3 09/25/02 4, , ft bmp - feet below measuring point ft amsl - feet above mean sea level JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

52 JSAI Summary of water-level measurements from monitor wells MW-1 through MW-9, Las Cruces Foothills Landfill, Las Cruces, New Mexico (continued) well date top of casing elevation (ft amsl) depth to water (ft bmp) water-level elevation (ft amsl) MW-3 12/18/02 4, , MW-3 07/15/03 4, , MW-3 12/29/03 4, , MW-3 12/2/04 4, , MW-3 12/14/05 4, , MW-3 12/12/06 4, , MW-3 01/11/08 4, , MW-3 12/23/08 4, , MW-3 12/29/09 4, , MW-3 12/29/10 4, , MW-3 05/12/11 4, , MW-3 12/20/11 4, , MW-3 6/12/12 4, , MW-3 12/12/12 4, , MW-3 6/18/13 4, , MW-3 12/12/13 4, , MW-4 01/11/99 4, , MW-4 04/01/99 4, , MW-4 05/06/99 4, , MW-4 07/07/99 4, , MW-4 09/15/99 4, , MW-4 11/03/99 4, , MW-4 05/18/00 4, , MW-4 11/09/00 4, , MW-4 06/13/01 4, , MW-4 10/29/01 4, , MW-4 11/06/01 4, , MW-4 03/25/02 4, , MW-4 04/03/02 4, , MW-4 07/12/02 4, , MW-4 09/25/02 4, , MW-4 12/18/02 4, , MW-4 07/15/03 4, , MW-4 12/29/03 4, , MW-4 12/2/04 4, , MW-4 12/14/05 4, , MW-4 12/12/06 4, , MW-4 01/11/08 4, , ft bmp - feet below measuring point ft amsl - feet above mean sea level JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

53 JSAI Summary of water-level measurements from monitor wells MW-1 through MW-9, Las Cruces Foothills Landfill, Las Cruces, New Mexico (continued) well date top of casing elevation (ft amsl) depth to water (ft bmp) water-level elevation (ft amsl) MW-4 12/23/08 4, , MW-4 12/29/09 4, , MW-4 12/29/10 4, , MW-4 12/27/11 4, , MW-4 6/12/12 4, , MW-4 12/12/12 4, , MW-4 6/19/13 4, , MW-4 12/12/13 4, , MW-5 07/15/03 4, , MW-5 08/27/03 4, , MW-5 09/29/03 4, , MW-5 10/27/03 4, , MW-5 11/25/03 4, , MW-5 12/29/03 4, , MW-5 12/2/04 4, , MW-5 12/14/05 4, , MW-5 12/12/06 4, , MW-5 01/11/08 4, ,835.0 MW-5 12/23/08 4, , MW-5 12/29/09 4, , MW-5 12/29/10 4, , MW-5 12/28/11 4, , MW-5 6/12/12 4, , MW-5 12/13/12 4, , MW-5 6/19/13 4, , MW-6 07/15/03 4, , MW-6 08/27/03 4, , MW-6 09/29/03 4, , MW-6 10/27/03 4, , MW-6 11/25/03 4, , MW-6 12/29/03 4, , MW-6 12/2/04 4, , MW-6 12/14/05 4, , MW-6 12/12/06 4, , MW-6 01/11/08 4, , MW-6 12/23/08 4, , MW-6 12/29/09 4, , ft bmp - feet below measuring point ft amsl - feet above mean sea level JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

54 JSAI Summary of water-level measurements from monitor wells MW-1 through MW-9, Las Cruces Foothills Landfill, Las Cruces, New Mexico (concluded) well date top of casing elevation (ft amsl) depth to water (ft bmp) water-level elevation (ft amsl) MW-6 12/29/10 4, , MW-6 12/28/11 4, , MW-6 6/12/12 4, , MW-6 12/13/12 4, , MW-6 6/18/13 4, , MW-7 7/15/03 4, , MW-7 8/27/03 4, , MW-7 9/29/03 4, , MW-7 10/27/03 4, , MW-7 11/25/03 4, , MW-7 12/29/03 4, , MW-7 12/2/04 4, , MW-7 12/14/05 4, , MW-7 12/12/06 4, , MW-7 1/11/08 4, ,910.7 MW-7 12/23/08 4, , MW-7 12/29/09 4, , MW-7 12/29/10 4, , MW-7 12/28/11 4, , MW-7 6/12/12 4, , MW-7 12/13/12 4, , MW-7 6/19/13 4, , MW-7 12/12/13 4, , MW-8 12/29/10 4, , MW-8 05/18/11 4, , MW-8 08/23/11 4, , MW-8 11/28/11 4, , MW-8 12/29/11 4, , MW-8 12/13/12 4, , MW-8 6/18/13 4, , MW-9 12/29/10 4, , MW-9 05/18/11 4, , MW-9 08/23/11 4, , MW-9 11/28/11 4, , MW-9 12/29/11 4, , MW-9 12/20/12 4, , MW-9 6/26/13 4, , ft bmp - feet below measuring point ft amsl - feet above mean sea level JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

55 JSAI Appendix B. Baseline and background monitoring data for monitor wells MW-1 through MW-9 Las Cruces Foothills Landfill, Las Cruces, New Mexico JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

56 JSAI MW-1 JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

57 APPEIX B Las Cruces Foothills Landfill MW-1 Page 1 of 4 Las Cruces Foothills Landfill monitoring well MW-1 baseline standard constituent CAS Number unit GWPS RESULTS FOR MW-1 average deviation date 3/1/90 5/19/92 7/20/92 12/7/93 6/7/96 5/11/99 7/7/99 9/15/99 11/3/99 5/18/00 11/9/00 6/13/01 11/6/01 4/3/02 7/12/02 9/25/02 12/18/02 7/15/03 12/29/03 12/2/04 12/14/05 12/12/06 1/18/08 12/23/08 12/29/09 12/29/10 12/27/11 12/19/12 6/25/13 12/19/13 5/11/99 to 5/11/99 to 5/18/00 5/18/00 Field Parameters water level elevation - ft amsl - x x x x x x , , , , , , , , , , , , , conductivity - µs/cm x 300 x ph - ph units x temperature - deg F Major Ions calcium mg/l x 24.7 x x chloride mg/l x 16.1 x x fluoride mg/l x 0.62 x x x x x x 0.54 x 0.52 x x x x magnesium mg/l x 5.7 x x potassium mg/l x 1.6 x x sodium mg/l x 31.9 x x sulfate mg/l x 34.6 x x alkalinity - mg/l x 96.5 x x bicarbonate alkalinity mg/l x x x carbonate alkalinity mg/l - <1.0 <1.0 x <1.0 x <1.0 <1.0 <1.0 <1.0 < x <1.0 <2.0 <2.0 <2.0 <2.0 <4.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <1.0 x total dissolved solids - mg/l 1, x 213 x x Nitrogen Species ammonia as N mg/l - x 1.08 x 0.27 x <0.01 <0.01 x x < < <0.50 <1.0 < <1.0 < Kjeldahl nitrogen mg/l - x 1.1 x 0.8 x x <1.0 x x 1.1 x <1.0 x x x x x x nitrate as N mg/l 10 x 1.21 x 3.22 x <0.05 x < <1.0 < <0.1 < < nitrite mg/l - < x 3.22 x <0.05 < <0.05 <0.05 <0.05 x < <0.10 <0.1 <1.0 x x x x x x x x x x x total nitrogen - mg/l - x x x x x x x x x x x x x x x x x x x x x x x <1.0 x x x x x x x x Metals aluminum mg/l 5.0 x 0.28 x x <0.05 <0.05 < < x <0.10 <0.03 <0.03 <0.03 <3.0 <3.0 x x x <0.02 x <0.02 x x x x antimony mg/l x x x x x < < < < < < < <0.05 < (") <0.004 < <0.003 x x x x <0.001 <0.001 <0.001 < <0.001 <0.001 < x arsenic mg/l x x <0.005 < < < <0.01 x x x x <0.006 <0.002 <0.001 < < < barium mg/l x 0.09 x x x x x beryllium mg/l x x x x x < < < < < < < < <0.003 < <0.001 <0.001 < <0.002 x x x x <0.003 x < <0.002 <0.002 <0.002 < x boron mg/l 0.75 x 0.1 x 0.05 x < <0.01 x < <0.1 <0.5 x x x x <0.04 x <0.04 x x x x cadmium mg/l <0.005 <0.005 x <0.005 x < < < < <0.005 < <0.001 <0.001 < <0.002 x x x x <0.002 <0.002 <0.002 < <0.002 <0.002 < chromium mg/l x x < < < <0.005 < <0.002 < <0.01 x x x x <0.006 <0.006 < <0.006 <0.006 < cobalt mg/l 0.05 x <0.01 x <0.01 x < <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.010 <0.001 < <0.03 x x x x <0.006 <0.006 < <0.006 <0.006 < x copper mg/l 1.0 x 0.03 x x <0.01 < <0.01 < < <0.06 x x x x <0.006 <0.006 < <0.006 <0.006 < iron mg/l x 4.86 x < x lead mg/l x x < <0.005 < <0.002 < <0.01 x x x x <0.005 <0.005 < <0.001 < manganese mg/l x 0.05 x <0.005 <0.005 x <0.03 <0.03 <0.03 <0.03 < mercury mg/l < < x < x < < < < < < < <0.07 <0.20 < <0.001 x x x x < x < x x x x molybdenum mg/l 1.0 x <0.05 x <0.05 x <0.05 <0.05 <0.05 < x < <0.010 <0.75 x x x x <0.008 x x x x x x 0.00 x nickel mg/l 0.2 x <0.05 x <0.05 x <0.005 < < <0.05 x x x x <0.01 <0.01 < <0.01 <0.01 < selenium mg/l 0.05 < x x < < <0.01 < < <0.005 x x x x <0.001 <0.001 < < silver mg/l 0.05 <0.02 <0.02 x <0.02 x <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.005 < <0.002 <0.002 <0.010 <0.01 x x x x <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.02 x thallium mg/l x x x x x < < < < <0.01 <0.010 <0.003 < <0.001 x x x x <0.001 <0.001 <0.001 < <0.001 <0.001 < tin mg/l - x x x x x x x x x x x x x <0.01 x x x x x x x x x <0.1 x x x x x x x x uranium mg/l 0.03 x x x x < x < <0.002 <2.5 x x x x <0.001 x x x x x x vanadium mg/l - x x x x x < <0.05 <0.05 x <0.05 <0.05 <0.05 <0.01 < <0.050 <0.08 x x x x <0.05 <0.05 < <0.05 <0.05 < x zinc mg/l 10.0 x 0.86 x 0.14 x x 0.21 < <0.02 <0.020 <0.008 <0.008 <0.020 <0.05 x x x x <0.02 <0.02 < <0.01 <0.01 < total organic carbon - mg/l - x x x 0.5 x x <1.0 <1.0 < < phosphate mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.50 x <0.5 x x x x x x sulfide mg/l - x x x x x x x x x x x x x <1.0 x x x x x x x x x <1 x x x x x x x x cyanide mg/l 0.2 x x <0.02 <0.02 x <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 < < < <0.005 <0.01 <0.1 x x x x <0.005 x x x x x x x x perchlorate mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x total phenolics 1 - mg/l x x 0.03 x x 0.02 <0.02 <0.003 <0.003 <0.003 < (^) < <0.005 <0.003 <0.003 <0.003 <0.003 < < < < < < < x Polychlorinated Biphenyls (PCBs) mg/l x x < < x < < < < < < < < (^^) (^^) (^^) (^^) (^^) (^^) x x x x (^^) x x x x x x < x Volatile Organic Compounds 1,1,1,2-Tetrachloroethane mg/l 0.02 x x <0.001 x x <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 < x 1,1,1-Trichloroethane mg/l 0.06 x x <0.001 x x <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 < x 1,1,2,2-Tetrachloroethane mg/l 0.01 x x <0.001 x x <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 < x 1,1,2-Trichloroethane mg/l x x <0.001 x x <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 < x 1,1-Dichloroethane mg/l x x <0.001 x x <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 < x 1,1-Dichloroethylene (1,1-Dichloroethene; 1,1-DCE) mg/l x x <0.001 x x <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 < x 1,1-Dichloropropene mg/l - x x x x x x x x x x x x x <0.001 <0.001 <0.001 x < x x x x x <0.005 x x x x x x x x 1,2 Dibromo-3-chloropropane (DBCP) mg/l x x x x x < < < < < < < < < <0.001 < < < < < < < < < < < < < < < < x 1,2,3-Trichlorobenzene mg/l - x x <0.001 x x <0.001 < < < < < < < x <0.001 x <0.001 < x x x x x x x x x x x x < x 1,2,3-Trichloropropane mg/l 0.01 x x <0.001 x x <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 < x 1,2,4-Trichlorobenzene mg/l - x x <0.001 x x <0.001 < < < < < < < <0.02 <0.001 x <0.001 < x x x x x <0.001 x x x x x x < x 1,2-Dichlorobenzene (o-dichlorobenzene) mg/l 0.6 x x x x x x x x x x x x x <0.001 <0.001 <0.001 <0.001 < <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x x 1,2-Dichloroethane (EDC) mg/l x x <0.001 x x <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 < x 1,2-Dichloropropane mg/l x x <0.001 x x <0.001 < < < < < < < < <0.001 < <0.001 < < < < < < < < < < < < < < x 1,3-Dichlorobenzene (m-dichlorobenzene) mg/l - x x <0.001 x x <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < x x x x x <0.01 <0.001 x x x x x < x 1,3-Dichloropropane mg/l - x x <0.001 x x <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < x x x x x <0.01 x x x x x x < x 1,4-Dichlorobenzene (p-dichlorobenzene) mg/l x x <0.001 x x <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.015 <0.015 <0.015 <0.015 <0.015 <0.015 <0.001 < <0.001 <0.001 <0.001 < x 2,2-Dichloropropane mg/l - x x <0.001 x x <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < x x x x x <0.015 x x x x x x < x 2-Butanone (Methyl Ethyl Ketone) (MEK) mg/l - x x <0.005 x x <0.01 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.01 <0.01 <0.01 <0.01 <0.025 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.002 x JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

58 APPEIX B Las Cruces Foothills Landfill MW-1 Page 2 of 4 Las Cruces Foothills Landfill monitoring well MW-1 baseline standard constituent CAS Number unit GWPS RESULTS FOR MW-1 average deviation date 3/1/90 5/19/92 7/20/92 12/7/93 6/7/96 5/11/99 7/7/99 9/15/99 11/3/99 5/18/00 11/9/00 6/13/01 11/6/01 4/3/02 7/12/02 9/25/02 12/18/02 7/15/03 12/29/03 12/2/04 12/14/05 12/12/06 1/18/08 12/23/08 12/29/09 12/29/10 12/27/11 12/19/12 6/25/13 12/19/13 5/11/99 to 5/11/99 to 5/18/00 5/18/00 2-Chlorotoluene mg/l - x x <0.001 x x <0.001 < < < < < < < x <0.001 x <0.001 < x x x x x x x x x x x x < x 2-Hexanone (Butyl Ketone) mg/l 0.02 x x <0.002 x x x <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.01 <0.01 <0.01 <0.001 <0.025 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.002 x 4-Chlorotoluene mg/l - x x <0.001 x x <0.001 < < < < < < < x <0.001 x <0.001 < x x x x x x x x x x x x < x 4-Methyl-2-pentanone mg/l - x x x x x x <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.01 <0.01 <0.01 <0.001 <0.025 <0.015 <0.015 <0.015 <0.015 <0.015 <0.015 x x x x x x <0.002 x Acetone mg/l - x x <0.005 x x x <0.01 <0.01 <0.01 <0.01 <0.01 < <0.01 <0.01 <0.01 <0.01 <0.025 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x Acrolein mg/l - x x x x x x x x x x x x x <0.005 <0.005 <0.005 x <0.025 x x x x x <0.1 x x x x x x x x Acrylonitrile mg/l - x x x x x x <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.005 <0.005 <0.005 <0.005 <0.025 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.002 x Benzene mg/l x x <0.001 x x <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 < x Bis(chloromethyl) ether mg/l - x x x x x x x x x x x x x x x x x x x x x x x (#) x x x x x x x x Bromochloromethane mg/l - x x <0.001 x x <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 < x Bromomethane (methyl bromide) mg/l - <0.001 <0.001 < < < < < < < <0.002 < < <0.002 <0.002 <0.001 < <0.001 <0.001 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 x Carbon Disulfide mg/l - x x x x x x <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.001 <0.001 <0.001 <0.001 <0.005 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.002 x Carbon Tetrachloride mg/l x x <0.001 x x <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 < x Chlorobenzene mg/l 0.1 x x <0.001 x x <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 < x Chloroethane mg/l - x x <0.001 x x <0.001 < < < < < < < <0.002 <0.001 < <0.001 < <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 < x Chloromethane (methyl chloride) mg/l 0.02 x x <0.001 x x <0.001 < < < < < < < <0.001 <0.001 < <0.001 < <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 < x Chloroprene (2-Chloro-1,3-butadiene) mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x cis-1,2-dichloroethylene (cis-1,2-dichloroethene) mg/l 0.07 x x x x x <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 < < x cis-1,3-dichloropropene mg/l - x x <0.001 x x <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 < x Dibromomethane (methylene bromide) mg/l - x x <0.001 x x <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 < x Dichlorodifluoromethane mg/l - x x <0.001 x x < x x x x < x Ethyl methacrylate mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.01 x x x x x x x x Ethylbenzene mg/l 0.75 x x <0.001 x x <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 < <0.001 <0.001 <0.001 < x Ethylene Dibromide (1,2-Dibromoethane) (EDB) mg/l 5E-05 x x x < x < < < < < < < < < <0.01 < < < < < < < < < < < < < < < < x Hexachlorobutadiene mg/l - x x <0.001 x x <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < x x x x x <0.001 x x x x x x < x Isobutyl alcohol mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.05 x x x x x x x x Isopropylbenzene mg/l - x x <0.001 x x <0.001 < < < < < < < x <0.001 x <0.001 < x x x x x x x x x x x x < x Methacrylonitrile mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.005 x x x x x x x x Methyl Iodide (Iodomethane) mg/l - x x x x x x <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.005 <0.005 <0.005 <0.005 <0.005 <0.04 <0.04 <0.04 <0.04 <0.04 <0.04 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.002 x Methyl methacrylate mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.03 x x x x x x x x Methylene Chloride mg/l x x <0.005 x x <0.002 < < < < < < <0.001 <0.001 < <0.001 < <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 < <0.001 <0.001 < x n-butylbenzene mg/l - x x <0.001 x x <0.001 < < < < < < < x <0.001 x <0.001 < x x x x x x x x x x x x < x Propionitrile mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.06 x x x x x x x x Propylbenzene mg/l - x x <0.001 x x <0.001 < < < < < < < x <0.001 x <0.001 x x x x x x x x x x x x x < x sec-butylbenzene mg/l - x x <0.001 x x <0.001 < < < < < < < x <0.001 x <0.001 < x x x x x x x x x x x x < x Styrene mg/l 0.1 x x <0.001 x x <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 < x tert-butyl methyl ether (MTBE) (a) mg/l 0.1 x x <0.005 x x <0.01 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 x <0.001 x <0.001 <0.005 x x x x x <0.001 x x x x x x <0.002 x tert-butylbenzene mg/l - x x <0.001 x x <0.001 < < < < < < < x <0.001 x <0.001 < x x x x x x x x x x x x < x Tetrachloroethene (PCE) mg/l x x x x Tetrahydrofuran (THF) mg/l - x x <0.005 x x <0.001 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 x x x x <0.010 x x x x x x x x x x x x <0.002 x Toluene mg/l 0.75 x x <0.001 x x <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 < <0.001 <0.001 <0.001 < x Total Xylenes (m&p and o) 1 - mg/l 0.62 x x <0.001 x x < < < < < < < <0.001 <0.001 <0.002 <0.002 <0.001 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.002 < <0.002 <0.002 <0.002 < x trans-1,2-dichloroethene mg/l 0.1 x x <0.001 x x <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.005 <0.002 <0.002 <0.002 <0.002 <0.002 <0.001 < <0.001 <0.001 <0.001 < x trans-1,3-dichloropropene mg/l - x x <0.001 x x <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 < x trans-1,4-dichloro-2-butene mg/l - x x <0.002 x x x <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.001 <0.001 <0.001 <0.001 <0.010 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.002 x Trichloroethene (TCE) mg/l x x <0.001 x x <0.001 < < < < < < <0.001 <0.001 <0.001 < <0.001 <0.001 < <0.001 <0.001 < < x Trichlorofluoromethane mg/l - x x <0.001 x x <0.001 < < < < < < < <0.001 <0.001 < <0.001 <0.001 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.001 < <0.001 <0.001 <0.001 x Vinyl acetate mg/l - x x <0.001 x x x <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.001 <0.001 <0.001 <0.001 <0.025 <0.05 <0.05 <0.05 <0.05 <0.05 < <0.01 <0.01 <0.01 <0.01 <0.01 <0.002 x Vinyl Chloride mg/l x x x x x <0.001 < < < < < < < < <0.001 < <0.001 < < < < < < < < < < < < < < x Trihalomethanes (THM) Bromodichloromethane mg/l - x x <0.001 x x <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 < x Bromoform mg/l 0.1 x x <0.001 x x <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 <0.001 <0.015 <0.015 <0.015 <0.015 <0.015 <0.015 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 < x Chloroform mg/l 0.1 x x <0.001 x x <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 < x Dibromochloromethane mg/l - x x <0.001 x x <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 < x Semi Volatile Organic Compounds 1,2,4,5-Tetrachlorobenzene mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x 1,2-Diphenylhydrazine mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x 1,4-Naphthoquinone mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x 1-Chloronaphthalene - mg/l - x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x 1-Methylnaphthalene mg/l - x x x x x x x x x x x x x x x < < <0.005 <0.01 x x x x <0.001 x x x x x x x x 1-Naphthylamine mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x 2,4,6-Trinitrotoluene (TNT) mg/l - x x x x x x x x x x x x x x x x x x x x x x x < x x x x x x x x 2,4-Dinitrotoluene (2,4-DNT) mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x 2,6-Dinitrotoluene 1 (2,6-DNT) mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x 2-Chloronaphthalene mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x 2-Methylnaphthalene mg/l - x x x x x x x x x x x x x x x < < <0.010 <0.01 x x x x <0.001 x x x x x x x x 2-Naphthylamine mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x 2-Nitroaniline (o-nitroaniline) mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x 2-Picoline mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x 3,3'-Dichlorobenzidine mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x 3,3'-Dimethylbenzidine mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x 3-Methylcholanthrene mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x 3-Nitroaniline (m-nitroaniline) mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x 4-Aminobiphenyl mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

59 APPEIX B Las Cruces Foothills Landfill MW-1 Page 3 of 4 Las Cruces Foothills Landfill monitoring well MW-1 baseline standard constituent CAS Number unit GWPS RESULTS FOR MW-1 average deviation date 3/1/90 5/19/92 7/20/92 12/7/93 6/7/96 5/11/99 7/7/99 9/15/99 11/3/99 5/18/00 11/9/00 6/13/01 11/6/01 4/3/02 7/12/02 9/25/02 12/18/02 7/15/03 12/29/03 12/2/04 12/14/05 12/12/06 1/18/08 12/23/08 12/29/09 12/29/10 12/27/11 12/19/12 6/25/13 12/19/13 5/11/99 to 5/11/99 to 5/18/00 5/18/00 4-Bromophenylphenyl ether mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x 4-Chloroaniline (p-chloroanaline) mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x 4-Chlorophenylphenyl ether mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x 4-Nitroaniline (p-nitroaniline) mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x 7,12-Dimethylbenz (a) anthracene mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Acenaphthene mg/l - x x x x x x x x x x x x x <0.02 < < < <0.005 x x x x x <0.001 x x x x x x x x Acenaphthylene mg/l - x x x x x x x x x x x x x <0.02 < < < <0.005 x x x x x <0.001 x x x x x x x x Acetophenone mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x alpha,alpha-dimethylphenethylamine mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Aniline mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Anthracene mg/l - x x x x x x x x x x x x x <0.02 < < < <0.005 x x x x x <0.001 x x x x x x x x Benzidine mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Benzo (a) anthracene mg/l - x x x x x x x x x x x x x <0.02 < < < <0.005 x x x x x < x x x x x x x x Benzo (b) fluoranthene mg/l - x x x x x x x x x x x x x <0.02 < < < <0.005 x x x x x < x x x x x x x x Benzo (g,h,i) perylene mg/l - x x x x x x x x x x x x x <0.02 < < < <0.005 x x x x x <0.001 x x x x x x x x Benzo (k) fluoranthene mg/l - x x x x x x x x x x x x x <0.02 < < < <0.005 x x x x x < x x x x x x x x Benzo[a]pyrene mg/l x x x <0.001 x <0.001 < < < < < < < x < < < <0.005 < x x x x < x x x x x x < x Benzoic acid mg/l x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x Benzyl alcohol mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x bis (2-Chloroethoxy) methane mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x bis (2-Chloroethyl) ether mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x bis (2-Chloroisopropyl) ether (bis (2-chloro-1-methylethyl) ether) mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x bis (2-Ethylhexyl) phthalate mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Butylbenzylphthalate mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Carbazole mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Chlorobenzilate mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Chrysene mg/l - x x x x x x x x x x x x x <0.02 < < < <0.005 x x x x x < x x x x x x x x Diallate mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Dibenz (a,j) acridine mg/l - x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x Dibenzo (a,h) anthracene mg/l - x x x x x x x x x x x x x <0.02 < < < <0.005 x x x x x < x x x x x x x x Dibenzofuran mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Diethylene Glycol Monobutyl Ether mg/l - x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x Diethylphthalate mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Dimethylphthalate mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Di-n-butylphthalate mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Di-n-octylphthalate mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Diphenylamine mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Ethyl methanesulfonate mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Fluoranthene mg/l - x x x x x x x x x x x x x <0.02 < < < <0.005 x x x x x <0.001 x x x x x x x x Fluorene mg/l - x x x x x x x x x x x x x <0.02 < < < <0.005 x x x x x <0.001 x x x x x x x x Hexachlorobenzene mg/l - x x x x x x x x x x x x x x x x x x x x x x x < x x x x x x x x Hexachlorocyclopentadiene mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Hexachloroethane mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Hexachloropropene mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x HMX mg/l - x x x x x x x x x x x x x x x x x x x x x x x < x x x x x x x x Indeno (1,2,3-cd) pyrene mg/l - x x x x x x x x x x x x x <0.02 < < < <0.005 x x x x x < x x x x x x x x Isophorone mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Isosafrole mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x m-dinitrobenzene (1,3-DNB) mg/l - x x x x x x x x x x x x x x x x x x x x x x x < x x x x x x x x Methapyrilene mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Methyl methanesulfonate mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Naphthalene mg/l 0.03 x x <0.001 <0.001 x <0.001 <0.001 <0.001 <0.001 < < < <0.02 < < < < <0.01 x x x x <0.001 x x x x x x < x Nitrobenzene mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x n-nitrosodiethylamine mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x n-nitrosodimethylamine mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x n-nitrosodi-n-butylamine mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x n-nitrosodinpropylamine mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x n-nitrosodiphenylamine mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x n-nitrosomethylethylamine mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x n-nitrosopiperidine mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x n-nitrosopyrrolidine mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x o-toluidine mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x p-(dimethylamino) azobenzene mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Pentachlorobenzene mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Pentachloronitrobenzene mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Phenacetin mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Phenanthrene mg/l - x x <0.01 <0.01 x <0.001 < < < < < < < <0.02 < < < <0.005 x x x x x <0.001 x x x x x x < x p-phenylenediamine mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Pronamide mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Pyrene mg/l - x x <0.01 <0.01 x < < < < < < < < <0.02 < < < <0.005 x x x x x <0.001 x x x x x x < x Pyridine mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x RDX mg/l - x x x x x x x x x x x x x x x x x x x x x x x < x x x x x x x x Safrole mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

60 APPEIX B Las Cruces Foothills Landfill MW-1 Page 4 of 4 Las Cruces Foothills Landfill monitoring well MW-1 baseline standard constituent CAS Number unit GWPS RESULTS FOR MW-1 average deviation date 3/1/90 5/19/92 7/20/92 12/7/93 6/7/96 5/11/99 7/7/99 9/15/99 11/3/99 5/18/00 11/9/00 6/13/01 11/6/01 4/3/02 7/12/02 9/25/02 12/18/02 7/15/03 12/29/03 12/2/04 12/14/05 12/12/06 1/18/08 12/23/08 12/29/09 12/29/10 12/27/11 12/19/12 6/25/13 12/19/13 5/11/99 to 5/11/99 to 5/18/00 5/18/00 sym-trinitrobenzene 1 (1,3,5-trinitrobenzene, 1,3,5-TN mg/l - x x x x x x x x x x x x x x x x x x x x x x x < x x x x x x x x Semi Volatile Organic Compounds - Phenolics x 2,3,4,6-Tetrachlorophenol mg/l - x x x x x x x x x x x x x <0.02 x x x x x x x x x <0.001 x x x x x x x x 2,4,5-Trichlorophenol mg/l - x x x x x x x x x x x x x <0.1 x x x x x x x x x <0.001 x x x x x x x x 2,4,6-Trichlorophenol mg/l - x x x x x x x x x x x x x <0.02 x x x x x x x x x <0.001 x x x x x x x x 2,4-Dichlorophenol mg/l - x x x x x x x x x x x x x <0.02 x x x x x x x x x <0.001 x x x x x x x x 2,4-Dimethylphenol mg/l - x x x x x x x x x x x x x <0.02 x x x x x x x x x <0.001 x x x x x x x x 2,4-Dinitrophenol mg/l - x x x x x x x x x x x x x <0.1 x x x x x x x x x <0.001 x x x x x x x x 2,6-Dichlorophenol mg/l - x x x x x x x x x x x x x <0.02 x x x x x x x x x <0.001 x x x x x x x x 2-Chlorophenol mg/l - x x x x x x x x x x x x x <0.02 x x x x x x x x x <0.001 x x x x x x x x 2-Methylphenol (o-cresol) mg/l - x x x x x x x x x x x x x <0.02 x x x x x x x x x <0.001 x x x x x x x x 2-Nitrophenol (o-nitrophenol) mg/l - x x x x x x x x x x x x x <0.02 x x x x x x x x x <0.001 x x x x x x x x 3-Methylphenol/4-Methylphenol (m&p-cresol) / mg/l - x x x x x x x x x x x x x <0.02 x x x x x x x x x <0.001 x x x x x x x x 4,6-Dinitro-2-methylphenol (4,6-Dinitro-o-cresol) mg/l - x x x x x x x x x x x x x <0.1 x x x x x x x x x <0.001 x x x x x x x x p-chloro-m-cresol (4-Chloro-3-methylphenol) mg/l - x x x x x x x x x x x x x <0.02 x x x x x x x x x <0.001 x x x x x x x x 4-Nitrophenol (p-nitrophenol) mg/l - x x x x x x x x x x x x x <0.1 x x x x x x x x x <0.001 x x x x x x x x 5-Nitro-o-toluidine mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Pentachlorophenol mg/l - x x x x x x x x x x x x x <0.1 x x x x x x x x x <0.001 x x x x x x x x Phenol 1 (a) mg/l x x x x x x x x x x x x x < x x x x x x x x x <0.001 x x x x x x x x Radium 226 and pci/l 5 x x x < Ra-226, total pci/l - x x x <2.5 x x x x x x x x x x Ra-228 1, total pci/l - x x x <2.5 x x x x -0.4 x x x x x x Chlorinated Pesticides 4,4'-DDD (p,p'-ddd) mg/l - x x x x x x x x x x x x x < < x x x x x x x x < x x x x x x x x 4,4'-DDE (p,p'-dde) mg/l - x x x x x x x x x x x x x < < x x x x x x x x < x x x x x x x x 4,4'DDT (p,p'-ddt) mg/l - x x x x x x x x x x x x x < < x x x x x x x x < x x x x x x x x aldrin mg/l - x x x x x x x x x x x x x < < x x x x x x x x < x x x x x x x x alpha-bhc mg/l - x x x x x x x x x x x x x < < x x x x x x x x < x x x x x x x x alpha-chlordane mg/l - x x x x x x x x x x x x x < < x x x x x x x x x x x x x x x x x beta-bhc mg/l - x x x x x x x x x x x x x < < x x x x x x x x < x x x x x x x x Chlordane mg/l x x x x x x x x x x x x x x x x x x x x x x x < x x x x x x x x delta-bhc mg/l - x x x x x x x x x x x x x < < x x x x x x x x < x x x x x x x x Dieldrin mg/l - x x x x x x x x x x x x x < < x x x x x x x x < x x x x x x x x Endosulfan I (alpha-endosulfan) mg/l - x x x x x x x x x x x x x < < x x x x x x x x < x x x x x x x x Endosulfan II (beta-endosulfan) mg/l - x x x x x x x x x x x x x < < x x x x x x x x < x x x x x x x x Endosulfan sulfate mg/l - x x x x x x x x x x x x x < < x x x x x x x x < x x x x x x x x Endrin aldehyde mg/l - x x x x x x x x x x x x x < < x x x x x x x x < x x x x x x x x Endrin ketone mg/l - x x x x x x x x x x x x x < < x x x x x x x x x x x x x x x x x Endrin mg/l - x x x x x x x x x x x x x < < x x x x x x x x < x x x x x x x x gamma-bhc mg/l - x x x x x x x x x x x x x < < x x x x x x x x < x x x x x x x x gamma-chlordane mg/l - x x x x x x x x x x x x x < < x x x x x x x x x x x x x x x x x Heptachlor epoxide mg/l - x x x x x x x x x x x x x < < x x x x x x x x < x x x x x x x x Heptachlor mg/l - x x x x x x x x x x x x x < < x x x x x x x x < x x x x x x x x Isodrin mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Kepone mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Methoxychlor mg/l - x x x x x x x x x x x x x < < x x x x x x x x < x x x x x x x x Toxaphene mg/l - x x x x x x x x x x x x x <0.003 < x x x x x x x x <0.001 x x x x x x x x Polychlorinated Biphenyls (PCBs) 1 mg/l Arochlor mg/l - x x x x x x x x x x x x x < < < < < < x x x x < x x x x x x x x Arochlor mg/l - x x x x x x x x x x x x x < < < < < < x x x x < x x x x x x x x Arochlor mg/l - x x x x x x x x x x x x x < < < < < < x x x x < x x x x x x x x Arochlor mg/l - x x x x x x x x x x x x x < < < < < < x x x x < x x x x x x x x Arochlor mg/l - x x x x x x x x x x x x x < < < < < < x x x x < x x x x x x x x Arochlor mg/l - x x x x x x x x x x x x x < < < < < < x x x x < x x x x x x x x Arochlor mg/l - x x x x x x x x x x x x x < < < < < < x x x x < x x x x x x x x Other Pesticides and Herbicides 1 2,3,7,8-TCDD ng/l 0.03 x x x x x x x x x x x x x x x x x x x x x x x < x x x x x x x x 2,4,5-T mg/l - x x x x x x x x x x x x x <0.002 x x x x x x x x x < x x x x x x x x 2,4-Dichlorophenoxyacetic acid (2,4-D) mg/l - x x x x x x x x x x x x x <0.002 x x x x x x x x x < x x x x x x x x Dimethoate mg/l - x x x x x x x x x x x x x <0.002 x x x x x x x x x <0.001 x x x x x x x x Dinoseb mg/l - x x x x x x x x x x x x x <0.002 x x x x x x x x x < x x x x x x x x Disulfoton mg/l - x x x x x x x x x x x x x <0.002 x x x x x x x x x <0.001 x x x x x x x x Famphur mg/l - x x x x x x x x x x x x x <0.002 x x x x x x x x x <0.001 x x x x x x x x Methyl parathion mg/l - x x x x x x x x x x x x x <0.002 x x x x x x x x x <0.001 x x x x x x x x o,o,o-triethyl phosphorothioate mg/l - x x x x x x x x x x x x x <0.003 x x x x x x x x x <0.001 x x x x x x x x Parathion (Ethyl) mg/l - x x x x x x x x x x x x x <0.002 x x x x x x x x x <0.001 x x x x x x x x Phorate mg/l - x x x x x x x x x x x x x <0.002 x x x x x x x x x <0.001 x x x x x x x x Silvex mg/l - x x x x x x x x x x x x x <0.002 x x x x x x x x x < x x x x x x x x o,o-diethyl o-2pyrazinyl phosphorothioate (Thionazin) mg/l - x x x x x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x 1 hazardous x parameter not analyzed (^) See section entitled 'Semi volatile organic compounds - phenolics' for break-out of phenolics concentrations. (^^) See section entitled 'Polychlorinated Biphenyls (PCBs)' for break-out of PCB concentrations. (") This concentration attributed to laboratory contamination of method blank and not the presence of antimony in the ground water sampled. (#) Scanned for and not detected, breaks down almost immediately in water. JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

61 JSAI MW-2 JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

62 APPEIX B Las Cruces Foothills Landfill MW-2 Page 1 of 5 Las Cruces Foothills Landfill monitoring well MW-2 *no sampling of MW-2 on 7/15/03 because pump was not working baseline standard constituent CAS Number unit GWPS RESULTS FOR MW-2 average deviation date 1/12/99 5/11/99 7/7/99 9/1/99 11/1/99 5/18/00 11/9/00 6/13/01 11/6/01 4/3/02 7/12/02 9/25/02 12/18/02 12/29/03 12/2/04 12/14/05 12/12/06 1/18/08 12/23/08 12/29/09 12/29/10 12/27/11 12/19/12 6/25/13 12/19/13 1/12/99 to 1/12/99 to 5/18/00 5/18/00 Field Parameters water level elevation NA ft amsl , conductivity NA µs/cm ph NA ph units temperature NA deg F Major Ions calcium mg/l x chloride mg/l x fluoride mg/l x x x x x 0.57 x 0.57 x x x x magnesium mg/l x potassium mg/l x sodium mg/l x sulfate mg/l x alkalinity NA mg/l x bicarbonate alkalinity mg/l x carbonate alkalinity mg/l - <1.0 <1.0 <1.0 <1.0 <1.0 x x x x x <1.0 <2.0 <2.0 <2.0 <4.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <1.0 x total dissolved solids NA mg/l 1, x Nitrogen Species ammonia as N mg/l <0.01 < <0.01 < <0.01 x x <0.05 <0.05 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <1.0 <1.0 < <1.0 < Kjeldahl nitrogen mg/l < <0.01 x 0.89 < <1.0 x x x x <1.0 x x x x x x nitrate as N mg/l x < < nitrite mg/l <0.05 <0.05 <0.05 <0.05 < <0.05 x <0.10 <0.1 <0.10 <1.0 x x x x x x x x x x x total nitrogen - mg/l - x x x x x x x x x x x x x x x x x x 1.7 x x x x x x x x Metals aluminum mg/l <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 x <0.10 < <3.0 <3.0 x x x <0.02 x <0.02 x x x x antimony mg/l < < < < < < < < <0.05 < (") <0.004 <0.003 x x x x <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 < x arsenic mg/l <0.005 < <0.004 <0.004 <0.01 x x x x barium mg/l x x x x beryllium mg/l < < < < < < < < <0.003 < <0.001 <0.001 <0.002 x x x x <0.003 x < <0.002 <0.002 < x boron mg/l 0.75 < <0.01 x < <0.5 x x x x <0.04 x <0.04 x x x x cadmium mg/l < < < < < < < <0.005 < <0.001 <0.001 <0.002 x x x x <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 < chromium mg/l 0.05 < < < <0.005 < < <0.01 x x x x <0.006 <0.006 <0.006 <0.006 <0.006 <0.006 < cobalt mg/l 0.05 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.010 <0.001 <0.001 <0.03 x x x x <0.006 <0.006 < <0.006 <0.006 <0.006 <0.01 x copper mg/l < <0.01 <0.010 < <0.06 x x x x <0.006 <0.006 <0.006 <0.006 <0.006 <0.006 < iron mg/l < < <0.01 x < <0.10 <0.05 <0.05 <0.05 <0.02 < < lead mg/l < <0.005 < < <0.01 x x x x <0.005 <0.005 <0.005 < <0.001 < manganese mg/l < < <0.005 <0.005 x <0.010 < <0.03 <0.03 <0.03 <0.03 <0.03 <0.002 <0.002 < <0.002 <0.002 < mercury mg/l < < < < < < < < <0.07 <0.20 <0.001 x x x x < x < x x x x molybdenum mg/l 1.0 <0.05 <0.05 <0.05 <0.05 < x < <0.75 x x x x <0.008 x <0.008 x x x x <0.05 x nickel mg/l <0.005 < < <0.05 x x x x <0.01 <0.01 < <0.01 < selenium mg/l <0.01 < <0.003 <0.005 x x x x <0.001 <0.001 <0.001 < < silver mg/l 0.05 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 < <0.02 <0.005 < <0.002 <0.002 <0.01 x x x x <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.02 x thallium mg/l < < < < <0.01 <0.010 <0.003 <0.003 <0.001 x x x x <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 < tin mg/l - x x x x x x x x x <0.01 x x x x x x x x <0.1 x x x x x x x x uranium mg/l x < <2.5 x x x x x x x x x x vanadium mg/l - <0.05 < <0.05 < <0.05 <0.05 <0.05 <0.01 < <0.08 x x x x <0.05 <0.05 < <0.05 < x zinc mg/l < <0.01 < <0.020 < <0.05 x x x x <0.02 <0.02 < <0.01 < total organic carbon - mg/l <0.5 <0.5 < x < < <1.0 <1.0 < <1.0 < phosphate mg/l - x x x x x x x x x x x x x x x x x x <0.50 x <0.50 x x x x x x sulfide mg/l - x x x x x x x x x <1.0 x x x x x x x x 3 x x x x x x x x cyanide mg/l 0.2 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.005 < <0.005 <0.005 <0.1 x x x x <0.005 x x x x x x <0.02 x perchlorate mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x total phenolics 1 - mg/l <0.005 < < < (^) < <0.003 <0.003 <0.003 <0.003 <0.003 < < < < < < < < Polychlorinated Biphenyls (PCBs) mg/l < < < < < < < < (^^) (^^) (^^) (^^) (^^) x x x x (^^) x x x x x x < x Volatile Organic Compounds 1,1,1,2-Tetrachloroethane mg/l 0.02 <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x 1,1,1-Trichloroethane mg/l 0.06 <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x 1,1,2,2-Tetrachloroethane mg/l 0.01 <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x 1,1,2-Trichloroethane mg/l <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x 1,1-Dichloroethane mg/l <0.001 <0.001 < < < < <0.001 <0.001 <0.001 <0.001 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 < <0.001 <0.001 <0.001 x 1,1-Dichloroethylene (1,1-Dichloroethene; 1,1-DCE) mg/l <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 < <0.001 <0.001 <0.001 <0.001 x 1,1-Dichloropropene mg/l - x x x x x x x x x <0.001 <0.001 <0.001 x x x x x x <0.005 x x x x x x x x JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

63 APPEIX B Las Cruces Foothills Landfill MW-2 Page 2 of 5 Las Cruces Foothills Landfill monitoring well MW-2 *no sampling of MW-2 on 7/15/03 because pump was not working baseline standard constituent CAS Number unit GWPS RESULTS FOR MW-2 average deviation date 1/12/99 5/11/99 7/7/99 9/1/99 11/1/99 5/18/00 11/9/00 6/13/01 11/6/01 4/3/02 7/12/02 9/25/02 12/18/02 12/29/03 12/2/04 12/14/05 12/12/06 1/18/08 12/23/08 12/29/09 12/29/10 12/27/11 12/19/12 6/25/13 12/19/13 1/12/99 to 1/12/99 to 5/18/00 5/18/00 1,2 Dibromo-3-chloropropane (DBCP) mg/l <0.01 <0.01 < < < < < < < < <0.001 x < < < < < < < < < < < < < <0.01 x 1,2,3-Trichlorobenzene mg/l - <0.001 <0.001 < < < < < < < x <0.001 x <0.001 x x x x x x x x x x x x <0.001 x 1,2,3-Trichloropropane mg/l 0.01 <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x 1,2,4-Trichlorobenzene mg/l - <0.001 <0.001 < < < < < < < <0.02 <0.001 x <0.001 x x x x x <0.001 x x x x x x <0.001 x 1,2-Dichlorobenzene (o-dichlorobenzene) mg/l 0.6 x x x x x x x x x <0.001 <0.001 <0.001 x <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x x 1,2-Dichloroethane (EDC) mg/l <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x 1,2-Dichloropropane mg/l <0.001 <0.001 < < < < < < < < <0.001 < < < < < < < < < < < < < < <0.001 x 1,3-Dichlorobenzene (m-dichlorobenzene) mg/l - <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 x x x x x <0.01 <0.001 x x x x x <0.001 x 1,3-Dichloropropane mg/l - <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 x x x x x <0.01 x x x x x x <0.001 x 1,4-Dichlorobenzene (p-dichlorobenzene) mg/l <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 <0.015 <0.015 <0.015 <0.015 <0.015 <0.015 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x 2,2-Dichloropropane mg/l - <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 x x x x x <0.015 x x x x x x <0.001 x 2-Butanone (Methyl Ethyl Ketone) (MEK) mg/l - <0.01 <0.01 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x 2-Chlorotoluene mg/l - <0.001 <0.001 < < < < < < < x <0.001 x <0.001 x x x x x x x x x x x x <0.001 x 2-Hexanone (Butyl Ketone) mg/l 0.02 x x <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.01 <0.01 <0.01 <0.01 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x 4-Chlorotoluene mg/l - <0.001 <0.001 < < < < < < < x <0.001 x <0.001 x x x x x x x x x x x x <0.001 x 4-Methyl-2-pentanone mg/l - x x <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.01 <0.01 <0.01 <0.01 <0.04 <0.015 <0.015 <0.015 <0.015 <0.04 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x Acetone mg/l - x x <0.01 <0.01 <0.01 <0.01 <0.01 < <0.01 <0.01 <0.01 <0.01 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x Acrolein mg/l - x x x x x x x x x <0.005 <0.05 <0.005 x x x x x x <0.1 x x x x x x x x Acrylonitrile mg/l - x x <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.005 <0.05 <0.005 <0.005 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.002 x Benzene mg/l <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Bis(chloromethyl) ether mg/l - x x x x x x x x x x x x x x x x x x (#) x x x x x x x x Bromochloromethane mg/l - <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.001 x Bromomethane (methyl bromide) mg/l - <0.001 <0.001 < < < < < < < <0.002 <0.001 <0.001 <0.001 <0.002 <0.02 <0.02 <0.02 <0.02 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.001 x Carbon Disulfide mg/l - x x <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.001 <0.001 <0.001 <0.001 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x Carbon Tetrachloride mg/l <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Chlorobenzene mg/l 0.1 <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Chloroethane mg/l - <0.001 <0.001 < < < < < < < <0.002 <0.001 <0.001 <0.001 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.001 x Chloromethane (methyl chloride) mg/l 0.02 <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Chloroprene (2-Chloro-1,3-butadiene) mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x cis-1,2-dichloroethylene (cis-1,2-dichloroethene) mg/l 0.07 <0.001 <0.001 < < < < <0.001 <0.001 <0.001 <0.001 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 < <0.001 <0.001 <0.001 <0.001 x cis-1,3-dichloropropene mg/l - <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Dibromomethane (methylene bromide) mg/l - <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Dichlorodifluoromethane mg/l x x x x < < < x Ethyl methacrylate mg/l - x x x x x x x x x x x x x x x x x x <0.01 x x x x x x x x Ethylbenzene mg/l 0.75 <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Ethylene Dibromide (1,2-Dibromoethane) (EDB) mg/l <0.001 <0.001 < < < < < < < < <0.001 x < < < < < < < < < < < < < <0.001 x Hexachlorobutadiene mg/l - <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 x x x x x <0.001 x x x x x x <0.001 x Isobutyl alcohol mg/l - x x x x x x x x x x x x x x x x x x <0.05 x x x x x x x x Isopropylbenzene mg/l - <0.001 <0.001 < < < < < < < x <0.001 x <0.001 x x x x x x x x x x x x <0.001 x Methacrylonitrile mg/l - x x x x x x x x x x x x x x x x x x <0.005 x x x x x x x x Methyl Iodide (Iodomethane) mg/l - x x <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.005 <0.001 <0.005 <0.005 <0.001 <0.04 <0.04 <0.04 <0.04 <0.001 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x Methyl methacrylate mg/l - x x x x x x x x x x x x x x x x x x <0.03 x x x x x x x x Methylene Chloride mg/l <0.002 <0.002 < < < <0.001 <0.001 < <0.001 <0.015 <0.001 <0.001 <0.001 <0.001 < <0.001 <0.001 <0.001 <0.001 <0.001 <0.002 x n-butylbenzene mg/l - <0.001 <0.001 < < < < < < < x <0.001 x <0.001 x x x x x x x x x x x x <0.001 x Propionitrile mg/l - x x x x x x x x x x x x x x x x x x <0.06 x x x x x x x x Propylbenzene mg/l - <0.001 <0.001 < < < < < < < x <0.001 x <0.001 x x x x x x x x x x x x <0.001 x sec-butylbenzene mg/l - <0.001 <0.001 < < < < < < < x <0.001 x <0.001 x x x x x x x x x x x x <0.001 x Styrene mg/l 0.1 <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x tert-butyl methyl ether (MTBE) (a) mg/l 0.1 <0.01 <0.01 <0.002 <0.002 <0.002 <0.002 <0.002 < x <0.001 x <0.001 x x x x x <0.001 x x x x x x <0.01 x tert-butylbenzene mg/l - <0.001 <0.001 < < < < < < < x <0.001 x <0.001 x x x x x x x x x x x x <0.001 x Tetrachloroethene (PCE) mg/l < Tetrahydrofuran (THF) mg/l - <0.01 <0.01 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 x x x x x x x x x x x x x x x x <0.01 x Toluene mg/l 0.75 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 < <0.001 <0.001 <0.001 <0.001 x Total Xylenes (m&p and o) 1 NA mg/l 0.62 <0.001 < < < < < < < <0.002 <0.001 <0.002 <0.002 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.002 < <0.002 <0.002 <0.002 <0.001 x trans-1,2-dichloroethene mg/l 0.1 <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 <0.005 <0.002 <0.002 <0.002 <0.002 <0.002 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x trans-1,3-dichloropropene mg/l - <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x trans-1,4-dichloro-2-butene mg/l - x x <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.001 <0.001 <0.001 <0.001 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x Trichloroethene (TCE) mg/l < < < < <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 < < Trichlorofluoromethane mg/l - <0.001 <0.001 < < < <0.001 <0.001 <0.001 <0.001 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.001 < <0.001 <0.001 <0.001 <0.001 x Vinyl acetate mg/l - x x <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.001 <0.001 <0.001 <0.001 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x Vinyl Chloride mg/l <0.001 <0.001 < < < < < < < < <0.001 < < < < < < < < < < < < < < <0.001 x JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

64 APPEIX B Las Cruces Foothills Landfill MW-2 Page 3 of 5 Las Cruces Foothills Landfill monitoring well MW-2 *no sampling of MW-2 on 7/15/03 because pump was not working baseline standard constituent CAS Number unit GWPS RESULTS FOR MW-2 average deviation date 1/12/99 5/11/99 7/7/99 9/1/99 11/1/99 5/18/00 11/9/00 6/13/01 11/6/01 4/3/02 7/12/02 9/25/02 12/18/02 12/29/03 12/2/04 12/14/05 12/12/06 1/18/08 12/23/08 12/29/09 12/29/10 12/27/11 12/19/12 6/25/13 12/19/13 1/12/99 to 1/12/99 to 5/18/00 5/18/00 Trihalomethanes (THM) Bromodichloromethane mg/l - <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Bromoform mg/l 0.1 <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 <0.015 <0.015 <0.015 <0.015 <0.015 <0.015 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Chloroform mg/l 0.1 <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Dibromochloromethane mg/l - <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Semi Volatile Organic Compounds 1,2,4,5-Tetrachlorobenzene mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x 1,2-Diphenylhydrazine mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x 1,4-Naphthoquinone mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x 1-Chloronaphthalene NA mg/l - x x x x x x x x x x x x x x x x x x x x x x x x x x x 1-Methylnaphthalene mg/l - x x x x x x x x x x x < < <0.01 x x x x <0.001 x x x x x x x x 1-Naphthylamine mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x 2,4,6-Trinitrotoluene (TNT) mg/l - x x x x x x x x x x x x x x x x x x < x x x x x x x x 2,4-Dinitrotoluene (2,4-DNT) mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x 2,6-Dinitrotoluene 1 (2,6-DNT) mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x 2-Chloronaphthalene mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x 2-Methylnaphthalene mg/l - x x x x x x x x x x x < < <0.01 x x x x <0.001 x x x x x x x x 2-Naphthylamine mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x 2-Nitroaniline (o-nitroaniline) mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x 2-Picoline mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x 3,3'-Dichlorobenzidine mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x 3,3'-Dimethylbenzidine mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x 3-Methylcholanthrene mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x 3-Nitroaniline (m-nitroaniline) mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x 4-Aminobiphenyl mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x 4-Bromophenylphenyl ether mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x 4-Chloroaniline (p-chloroanaline) mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x 4-Chlorophenylphenyl ether mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x 4-Nitroaniline (p-nitroaniline) mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x 7,12-Dimethylbenz (a) anthracene mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Acenaphthene mg/l - x x x x x x x x x <0.02 < < < < x x x x < x x x x x x x x Acenaphthylene mg/l - x x x x x x x x x <0.02 < < < x x x x x <0.001 x x x x x x x x Acetophenone mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x alpha,alpha-dimethylphenethylamine mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Aniline mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Anthracene mg/l - x x x x x x x x x <0.02 < < < x x x x x <0.001 x x x x x x x x Benzidine mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Benzo (a) anthracene mg/l - x x x x x x x x x <0.02 < < < x x x x x <0.001 x x x x x x x x Benzo (b) fluoranthene mg/l <0.1 <0.001 < < < < < < < <0.02 < < < x x x x x <0.001 x x x x x x <0.1 x Benzo (g,h,i) perylene mg/l - x x x x x x x x x <0.02 < < < x x x x x < x x x x x x x x Benzo (k) fluoranthene mg/l - x x x x x x x x x <0.02 < < < x x x x x < x x x x x x x x Benzo[a]pyrene mg/l - x x x x x x x x x <0.02 < < < x x x x x < x x x x x x x x Benzoic acid mg/l x x x x x <0.1 x x x x x x x x x x x x x x x Benzyl alcohol mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x bis (2-Chloroethoxy) methane mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x bis (2-Chloroethyl) ether mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x bis (2-Chloroisopropyl) ether (bis (2-chloro-1-methylethyl) ether) mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x bis (2-Ethylhexyl) phthalate mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Butylbenzylphthalate mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Carbazole mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Chlorobenzilate mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Chrysene mg/l - x x x x x x x x x <0.02 < < < x x x x x < x x x x x x x x Diallate mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Dibenz(a,j)acridine mg/l - x x x x x x x x x x x x x x x x x x x x x x x x x x x Dibenzo (a,h) anthracene mg/l - x x x x x x x x x <0.02 < < < x x x x x < x x x x x x x x Dibenzofuran mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Diethylene Glycol Monobutyl Ether mg/l - x x x x x x x x x x x x x x x x x x x x x x x x x x x Diethylphthalate mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Dimethylphthalate mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Di-n-butylphthalate mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Di-n-octylphthalate mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

65 APPEIX B Las Cruces Foothills Landfill MW-2 Page 4 of 5 Las Cruces Foothills Landfill monitoring well MW-2 *no sampling of MW-2 on 7/15/03 because pump was not working baseline standard constituent CAS Number unit GWPS RESULTS FOR MW-2 average deviation date 1/12/99 5/11/99 7/7/99 9/1/99 11/1/99 5/18/00 11/9/00 6/13/01 11/6/01 4/3/02 7/12/02 9/25/02 12/18/02 12/29/03 12/2/04 12/14/05 12/12/06 1/18/08 12/23/08 12/29/09 12/29/10 12/27/11 12/19/12 6/25/13 12/19/13 1/12/99 to 1/12/99 to 5/18/00 5/18/00 Diphenylamine mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Ethyl methanesulfonate mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Fluoranthene mg/l - x x x x x x x x x <0.02 < < < x x x x x <0.001 x x x x x x x x Fluorene mg/l - x x x x x x x x x <0.02 < < < x x x x x <0.001 x x x x x x x x Hexachlorobenzene mg/l - x x x x x x x x x x x x x x x x x x < x x x x x x x x Hexachlorocyclopentadiene mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Hexachloroethane mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Hexachloropropene mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x HMX mg/l - x x x x x x x x x x x x x x x x x x < x x x x x x x x Indeno (1,2,3-cd) pyrene mg/l - x x x x x x x x x <0.02 < < < x x x x x < x x x x x x x x Isophorone mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Isosafrole mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x m-dinitrobenzene (1,3-DNB) mg/l - x x x x x x x x x x x x x x x x x x < x x x x x x x x Methapyrilene mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Methyl methanesulfonate mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Naphthalene mg/l 0.03 <1.0 <0.001 <0.001 <0.001 <0.001 < < < < <0.02 < < < <0.01 x x x x <0.001 x x x x x x <1.0 x Nitrobenzene mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x n-nitrosodiethylamine mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x n-nitrosodimethylamine mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x n-nitrosodi-n-butylamine mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x n-nitrosodinpropylamine mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x n-nitrosodiphenylamine mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x n-nitrosomethylethylamine mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x n-nitrosopiperidine mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x n-nitrosopyrrolidine mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x o-toluidine mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x p-(dimethylamino) azobenzene mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Pentachlorobenzene mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Pentachloronitrobenzene mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Phenacetin mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Phenanthrene mg/l - <0.1 <0.001 < < < < < < < <0.02 < < < x x x x x <0.001 x x x x x x <0.1 x p-phenylenediamine mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Pronamide mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Pyrene mg/l - <0.25 <0.001 < < < < < < < <0.02 < < < x x x x x <0.001 x x x x x x <0.25 x Pyridine mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x RDX mg/l - x x x x x x x x x x x x x x x x x x < x x x x x x x x Safrole mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x sym-trinitrobenzene 1 (1,3,5-trinitrobenzene, 1,3,5-TNB) mg/l - x x x x x x x x x x x x x x x x x x < x x x x x x x x Semi Volatile Organic Compounds - Phenolics x 2,3,4,6-Tetrachlorophenol mg/l - x x x x x x x x x <0.02 x x x x x x x x <0.001 x x x x x x x x 2,4,5-Trichlorophenol mg/l - x x x x x x x x x <0.1 x x x x x x x x <0.001 x x x x x x x x 2,4,6-Trichlorophenol mg/l - x x x x x x x x x <0.02 x x x x x x x x <0.001 x x x x x x x x 2,4-Dichlorophenol mg/l - x x x x x x x x x <0.02 x x x x x x x x <0.001 x x x x x x x x 2,4-Dimethylphenol mg/l - x x x x x x x x x <0.02 x x x x x x x x <0.001 x x x x x x x x 2,4-Dinitrophenol mg/l - x x x x x x x x x <0.1 x x x x x x x x <0.001 x x x x x x x x 2,6-Dichlorophenol mg/l - x x x x x x x x x <0.02 x x x x x x x x <0.001 x x x x x x x x 2-Chlorophenol mg/l - x x x x x x x x x <0.02 x x x x x x x x <0.001 x x x x x x x x 2-Methylphenol (o-cresol) mg/l - x x x x x x x x x <0.02 x x x x x x x x <0.001 x x x x x x x x 2-Nitrophenol (o-nitrophenol) mg/l - x x x x x x x x x <0.02 x x x x x x x x <0.001 x x x x x x x x 3-Methylphenol/4-Methylphenol (m&p-cresol) / mg/l - x x x x x x x x x <0.02 x x x x x x x x <0.001 x x x x x x x x 4,6-Dinitro-2-methylphenol (4,6-Dinitro-o-cresol) mg/l - x x x x x x x x x <0.1 x x x x x x x x <0.001 x x x x x x x x p-chloro-m-cresol (4-Chloro-3-methylphenol) mg/l - x x x x x x x x x <0.02 x x x x x x x x <0.001 x x x x x x x x 4-Nitrophenol (p-nitrophenol) mg/l - x x x x x x x x x <0.1 x x x x x x x x <0.001 x x x x x x x x 5-Nitro-o-toluidine mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Pentachlorophenol mg/l - x x x x x x x x x <0.1 x x x x x x x x <0.001 x x x x x x x x Phenol 1 (a) mg/l x x x x x x x x x < x x x x x x x x <0.001 x x x x x x x x Radium 226 and 228 NA pci/l x <2.5 x x x x Ra-226, total NA pci/l x <2.5 x x x x 0.2 x x x x x x Ra-228 1, total NA pci/l x <2.5 x x x x 0.04 x x x x x x Chlorinated Pesticides 4,4'-DDD (p,p'-ddd) mg/l - x x x x x x x x x < < x x x x x x x < x x x x x x x x 4,4'-DDE (p,p'-dde) mg/l - x x x x x x x x x < < x x x x x x x < x x x x x x x x JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

66 APPEIX B Las Cruces Foothills Landfill MW-2 Page 5 of 5 Las Cruces Foothills Landfill monitoring well MW-2 *no sampling of MW-2 on 7/15/03 because pump was not working baseline standard constituent CAS Number unit GWPS RESULTS FOR MW-2 average deviation date 1/12/99 5/11/99 7/7/99 9/1/99 11/1/99 5/18/00 11/9/00 6/13/01 11/6/01 4/3/02 7/12/02 9/25/02 12/18/02 12/29/03 12/2/04 12/14/05 12/12/06 1/18/08 12/23/08 12/29/09 12/29/10 12/27/11 12/19/12 6/25/13 12/19/13 1/12/99 to 1/12/99 to 5/18/00 5/18/00 4,4'DDT (p,p'-ddt) mg/l - x x x x x x x x x < < x x x x x x x < x x x x x x x x aldrin mg/l - x x x x x x x x x < < x x x x x x x < x x x x x x x x alpha-bhc mg/l - x x x x x x x x x < < x x x x x x x < x x x x x x x x alpha-chlordane mg/l - x x x x x x x x x < < x x x x x x x x x x x x x x x x beta-bhc mg/l - x x x x x x x x x < < x x x x x x x < x x x x x x x x Chlordane mg/l x x x x x x x x x x x x x x x x x x < x x x x x x x x delta-bhc mg/l - x x x x x x x x x < < x x x x x x x < x x x x x x x x Dieldrin mg/l - x x x x x x x x x < < x x x x x x x < x x x x x x x x Endosulfan I (alpha-endosulfan) mg/l - x x x x x x x x x < < x x x x x x x < x x x x x x x x Endosulfan II (beta-endosulfan) mg/l - x x x x x x x x x < < x x x x x x x < x x x x x x x x Endosulfan sulfate mg/l - x x x x x x x x x < < x x x x x x x < x x x x x x x x Endrin aldehyde mg/l - x x x x x x x x x < < x x x x x x x < x x x x x x x x Endrin ketone mg/l - x x x x x x x x x < < x x x x x x x x x x x x x x x x Endrin mg/l - x x x x x x x x x < < x x x x x x x < x x x x x x x x gamma-bhc mg/l - x x x x x x x x x < < x x x x x x x < x x x x x x x x gamma-chlordane mg/l - x x x x x x x x x < < x x x x x x x x x x x x x x x x Heptachlor epoxide mg/l - x x x x x x x x x < < x x x x x x x < x x x x x x x x Heptachlor mg/l - x x x x x x x x x < < x x x x x x x < x x x x x x x x Isodrin mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Kepone mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x Methoxychlor mg/l - x x x x x x x x x < < x x x x x x x < x x x x x x x x Toxaphene mg/l - x x x x x x x x x <0.003 < x x x x x x x <0.001 x x x x x x x x Polychlorinated Biphenyls (PCBs) 1 mg/l Arochlor mg/l - x x x x x x x x x < < < < < x x x x < x x x x x x x x Arochlor mg/l - x x x x x x x x x < < < < < x x x x < x x x x x x x x Arochlor mg/l - x x x x x x x x x < < < < < x x x x < x x x x x x x x Arochlor mg/l - x x x x x x x x x < < < < < x x x x < x x x x x x x x Arochlor mg/l - x x x x x x x x x < < < < < x x x x < x x x x x x x x Arochlor mg/l - x x x x x x x x x < < < < < x x x x < x x x x x x x x Arochlor mg/l - x x x x x x x x x < < < < < x x x x < x x x x x x x x Other Pesticides and Herbicides 1 2,3,7,8-TCDD ng/l 0.03 x x x x x x x x x x x x x x x x x x < x x x x x x x x 2,4,5-T mg/l - x x x x x x x x x <0.002 x x x x x x x x < x x x x x x x x 2,4-Dichlorophenoxyacetic acid (2,4-D) mg/l - x x x x x x x x x <0.002 x x x x x x x x < x x x x x x x x Dimethoate mg/l - x x x x x x x x x <0.002 x x x x x x x x <0.001 x x x x x x x x Dinoseb mg/l - x x x x x x x x x <0.002 x x x x x x x x < x x x x x x x x Disulfoton mg/l - x x x x x x x x x <0.002 x x x x x x x x <0.001 x x x x x x x x Famphur mg/l - x x x x x x x x x <0.002 x x x x x x x x <0.001 x x x x x x x x Methyl parathion mg/l - x x x x x x x x x <0.002 x x x x x x x x <0.001 x x x x x x x x o,o,o-triethyl phosphorothioate mg/l - x x x x x x x x x <0.003 x x x x x x x x <0.001 x x x x x x x x Parathion (Ethyl) mg/l - x x x x x x x x x <0.002 x x x x x x x x <0.001 x x x x x x x x Phorate mg/l - x x x x x x x x x <0.002 x x x x x x x x <0.001 x x x x x x x x Silvex mg/l - x x x x x x x x x <0.002 x x x x x x x x < x x x x x x x x o,o-diethyl o-2pyrazinyl phosphorothioate (Thionazin) mg/l - x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x 1 hazardous x parameter not analyzed (^) See section entitled 'Semi volatile organic compounds - phenolics' for break-out of phenolics concentrations. (^^) See section entitled 'Polychlorinated Biphenyls (PCBs)' for break-out of PCB concentrations. (") This concentration attributed to laboratory contamination of method blank and not the presence of antimony in the ground water sampled. (#) Scanned for and not detected, breaks down almost immediately in water. JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

67 JSAI MW-3 JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

68 APPEIX B Las Cruces Foothills Landfill MW-3 Page 1 of 5 Las Cruces Foothills Landfill monitoring well MW-3 baseline standard constituent CAS Number unit GWPS RESULTS FOR MW-3 average deviation date 1/12/99 5/15/99 7/7/99 9/1/99 11/1/99 5/18/00 11/9/00 6/13/01 11/6/01 4/3/02 7/12/02 9/25/02 12/18/02 7/15/03 12/29/03 12/2/04 12/14/05 12/12/06 1/18/08 12/23/08 12/29/09 12/29/10 5/18/11 12/27/11 6/19/12 12/19/12 6/25/13 12/19/13 1/12/99 to 1/12/99 to 5/18/00 5/18/00 Field Parameters water level elevation ft amsl conductivity µs/cm ph ph units temperature deg F pumped dry Major Ions calcium mg/l x x chloride mg/l x x fluoride mg/l x x x x x 0.76 x 0.71 x x x x x x magnesium mg/l x x potassium mg/l x x sodium mg/l x x sulfate mg/l x x alkalinity NA mg/l x x bicarbonate alkalinity mg/l x x carbonate alkalinity mg/l - <1.0 <1.0 <1.0 < x 1 x x <20 <2.0 <4.0 < <2.0 <2.0 x <2.0 <2.0 < < x total dissolved solids NA mg/l 1, x x Nitrogen Species ammonia as N mg/l - < <0.01 <0.01 <0.01 <0.01 <0.01 x x <0.05 <0.05 <0.1 <0.5 <0.5 <0.5 <0.5 <0.5 <0.50 <1.0 <1.0 x <1.0 <1.0 <1.0 <1.0 < Kjeldahl nitrogen mg/l < <0.1 < x <0.050 <0.5 <0.5 <1 <1.0 x x x x <1.0 x x x x x x x x nitrate as N mg/l x <1.0 < x < nitrite mg/l - x 0.33 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 x <0.10 <0.1 <0.1 < x x x x x x x x x x x x x 0.33 x total nitrogen - mg/l - x x x x x x x x x x x x x x x x x x x <1.0 x x x x x x x x x x Metals aluminum mg/l < < < x <3.0 <3.0 x x x 0.04 x x x x x x x antimony mg/l < < < < < <0.05 < (") <0.004 < <0.003 x x x x <0.001 <0.001 <0.001 x < <0.001 <0.001 <0.001 < arsenic mg/l <0.005 < <0.004 < <0.01 x x x x x barium mg/l <0.02 x x x x x beryllium mg/l < < < < < < < < <0.003 < <0.001 <0.001 < <0.002 x x x x <0.003 x <0.001 x <0.002 <0.002 <0.002 < x boron mg/l < <0.01 x < <0.1 <0.5 x x x x <0.04 x x x x x x x x cadmium mg/l < < < < < <0.005 < <0.001 < <0.002 x x x x <0.002 <0.002 <0.002 x <0.002 <0.002 <0.002 <0.002 < chromium mg/l <0.01 x x x x x < <0.006 < cobalt mg/l 0.05 <0.01 < <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.010 <0.001 < <0.03 x x x x <0.006 <0.006 <0.006 x <0.006 <0.006 <0.006 < x copper mg/l < <0.06 x x x x x iron mg/l < < x <0.10 < < x <0.02 <0.02 < < lead mg/l < < < <0.01 x x x x <0.005 <0.005 <0.005 x < manganese mg/l < < <0.005 <0.005 x < <0.010 <0.03 <0.03 <0.03 <0.03 < x < <0.002 < mercury mg/l < < < < < < < <0.07 <0.2 < <0.001 x x x x < x < x x x x x x molybdenum mg/l 1.0 <0.05 <0.05 <0.05 <0.05 < x < <0.010 <0.75 x x x x <0.008 x <0.008 x x x x x x <0.05 x nickel mg/l <0.05 x x x x x < <0.01 < selenium mg/l <0.01 <0.01 <0.003 < <0.005 x x x x <0.001 <0.001 <0.001 x < <0.001 < < silver mg/l 0.05 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 < <0.02 <0.005 < <0.002 <0.002 <0.010 <0.01 x x x x <0.005 < <0.005 x <0.005 <0.005 <0.005 <0.005 <0.005 <0.02 x thallium mg/l < < < < < <0.01 <0.010 <0.003 < <0.001 x x x x <0.001 <0.001 <0.001 x < <0.001 <0.001 <0.001 < tin mg/l - x x x x x x x x x <0.01 x x x x x x x x x <0.1 x x x x x x x x x x uranium mg/l x < <2.5 x x x x x x x x x x x x vanadium mg/l - <0.05 < <0.05 < <0.05 <0.05 <0.05 <0.01 < <0.050 <0.08 x x x x <0.05 <0.050 <0.05 x < <0.05 < x zinc mg/l < x x x x x total organic carbon - mg/l x <1.0 1 <0.5 <0.5 <0.5 <0.5 <1.0 <1.0 <1.0 <1.0 x 0.26 < <1.0 < phosphate mg/l - x x x x x x x x x x x x x x x x x x x <0.50 x <0.50 x x x x x x x x sulfide mg/l - x x x x x x x x x <1.0 x x x x x x x x x 3 x x x x x x x x x x cyanide mg/l 0.2 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.005 < <0.005 <0.005 <0.01 <0.1 x x x x <0.005 x x x x x x x x <0.02 x perchlorate mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x total phenolics 1 - mg/l <0.005 <0.02 <0.003 <0.003 < (^) <0.003 <0.005 <0.003 <0.003 <0.003 <0.003 < < < < x < < < < < x Polychlorinated Biphenyls (PCBs) mg/l < < < < < < < < < (^^) (^^) x (^^) (^^) (^^) x x x x (^^) x x x x x x x x < x Volatile Organic Compounds 1,1,1,2-Tetrachloroethane mg/l - x x <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.005 <0.01 <0.01 <0.01 <0.01 <0.025 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.01 <0.01 x <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 x 1,1,1-Trichloroethane mg/l 0.02 <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 x <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x 1,1,2,2-Tetrachloroethane mg/l 0.06 <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 x <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x 1,1,2-Trichloroethane mg/l 0.01 <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 x <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x 1,1-Dichloroethane mg/l <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.001 <0.001 x <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x 1,1-Dichloroethylene (1,1-Dichloroethene; 1,1-DCE) mg/l <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 x <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x 1,1-Dichloropropene mg/l <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.001 x x x x <0.005 x x x x x x x x <0.001 x 1,2 Dibromo-3-chloropropane (DBCP) mg/l - x x x x x x x x x <0.001 <0.001 <0.001 x < < < < < < < < < x < < < < < x x 1,2,3-Trichlorobenzene mg/l <0.01 <0.01 < < < < < < < < <0.001 < < <0.010 x x x x x x x x x x x x x x <0.01 x 1,2,3-Trichloropropane mg/l - <0.001 <0.001 < < < < < < < x <0.001 x <0.001 < <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.001 <0.001 x <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x 1,2,4-Trichlorobenzene mg/l 0.01 <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < x x x x x <0.001 x x x x x x x x <0.001 x 1,2-Dichlorobenzene (o-dichlorobenzene) mg/l - <0.001 <0.001 < < < < < < < <0.02 <0.001 x <0.001 < <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.001 <0.001 x <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x 1,2-Dichloroethane (EDC) mg/l 0.6 x x x x x x x x x <0.001 <0.001 <0.001 x < <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x <0.001 <0.001 <0.001 <0.001 <0.001 x x JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

69 APPEIX B Las Cruces Foothills Landfill MW-3 Page 2 of 5 Las Cruces Foothills Landfill monitoring well MW-3 baseline standard constituent CAS Number unit GWPS RESULTS FOR MW-3 average deviation date 1/12/99 5/15/99 7/7/99 9/1/99 11/1/99 5/18/00 11/9/00 6/13/01 11/6/01 4/3/02 7/12/02 9/25/02 12/18/02 7/15/03 12/29/03 12/2/04 12/14/05 12/12/06 1/18/08 12/23/08 12/29/09 12/29/10 5/18/11 12/27/11 6/19/12 12/19/12 6/25/13 12/19/13 1/12/99 to 1/12/99 to 5/18/00 5/18/00 1,2-Dichloropropane mg/l <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < < < < < < < < < x < < < < < <0.001 x 1,3-Dichlorobenzene (m-dichlorobenzene) mg/l <0.001 <0.001 < < < < < < < < <0.001 < < < x x x x x <0.01 <0.001 x x x x x x x <0.001 x 1,3-Dichloropropane mg/l - <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < x x x x x <0.01 x x x x x x x x <0.001 x 1,4-Dichlorobenzene (p-dichlorobenzene) mg/l - <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.015 <0.015 <0.015 <0.015 <0.015 <0.015 <0.001 <0.001 x <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x 2,2-Dichloropropane mg/l <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < x x x x x <0.015 x x x x x x x x <0.001 x 2-Butanone (Methyl Ethyl Ketone) (MEK) mg/l - <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.001 <0.001 x <0.01 <0.01 <0.01 <0.01 <0.01 <0.001 x 2-Chlorotoluene mg/l - <0.01 <0.01 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.01 <0.01 <0.01 <0.01 <0.025 x x x x x x x x x x x x x x <0.01 x 2-Hexanone (Butyl Ketone) mg/l - <0.001 <0.001 < < < < < < < x <0.001 x <0.001 < <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.01 <0.01 x <0.01 <0.01 <0.01 <0.01 <0.01 <0.001 x 4-Chlorotoluene mg/l 0.02 x x <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.01 <0.01 <0.01 <0.01 <0.025 x x x x x x x x x x x x x x <0.002 x 4-Methyl-2-pentanone mg/l - <0.001 <0.001 < < < < < < < x <0.001 x <0.001 < <0.04 <0.15 <0.15 <0.15 <0.15 <0.04 <0.01 <0.01 x <0.01 <0.01 <0.01 <0.01 <0.01 <0.001 x Acetone mg/l - x x <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.005 <0.01 <0.01 <0.01 <0.01 <0.025 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.01 <0.01 x <0.01 <0.01 <0.01 <0.01 <0.01 <0.002 x Acrolein mg/l - x x x x x x x x x <0.005 <0.005 <0.005 x <0.025 x x x x x <0.1 x x x x x x x x x x Acrylonitrile mg/l - x x <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.005 <0.005 <0.005 <0.005 <0.025 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.01 <0.01 x <0.01 <0.01 <0.01 <0.01 <0.01 <0.002 x Benzene mg/l <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Bis(chloromethyl) ether mg/l - x x x x x x x x x x x x x x x x x x x (#) x x x x x x x x x x Bromochloromethane mg/l - <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 <0.002 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.002 <0.002 x <0.002 <0.002 <0.002 <0.002 <0.002 <0.001 x Bromomethane (methyl bromide) mg/l - <0.001 <0.001 < < < < < < < <0.002 <0.001 <0.001 <0.001 <0.001 <0.002 <0.02 <0.02 <0.02 <0.02 <0.002 <0.002 <0.002 x <0.002 <0.002 <0.002 <0.002 <0.002 <0.001 x Carbon Disulfide mg/l - x x <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.001 <0.001 <0.001 <0.001 <0.005 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.01 <0.01 x <0.01 <0.01 <0.01 <0.01 <0.01 <0.002 x Carbon Tetrachloride mg/l <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.001 <0.001 x <0.001 <0.001 <0.001 <0.001 <0.001 <0.002 x Chlorobenzene mg/l 0.1 <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 x <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Chloroethane mg/l - <0.001 <0.001 < < < < < < < <0.002 <0.001 <0.001 <0.001 < <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.002 <0.002 x <0.002 <0.002 <0.002 <0.002 <0.002 <0.001 x Chloromethane (methyl chloride) mg/l 0.02 <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Chloroprene (2-Chloro-1,3-butadiene) mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x cis-1,2-dichloroethylene (cis-1,2-dichloroethene) mg/l 0.07 <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.005 <0.005 <0.001 <0.001 x <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x cis-1,3-dichloropropene mg/l - <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.001 <0.001 x <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Dibromomethane (methylene bromide) mg/l - <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.001 <0.001 x <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Dichlorodifluoromethane mg/l <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.005 x <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 x <0.001 <0.001 <0.001 <0.001 < x Ethyl methacrylate mg/l - x x x x x x x x x x x x x x x x x x x <0.01 x x x x x x x x x x Ethylbenzene mg/l 0.75 <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 x <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Ethylene Dibromide (1,2-Dibromoethane) (EDB) mg/l <0.001 <0.001 < < < < < < < < <0.001 < < < < < < < < < < < x < < < < < <0.001 x Hexachlorobutadiene mg/l - <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < x x x x x <0.001 x x x x x x x x <0.001 x Isobutyl alcohol mg/l - x x x x x x x x x x x x x x x x x x x <0.05 x x x x x x x x x x Isopropylbenzene mg/l - <0.001 <0.001 < < < < < < < x <0.001 x <0.001 < x x x x x x x x x x x x x x <0.001 x Methacrylonitrile mg/l - x x x x x x x x x x x x x x x x x x x <0.005 x x x x x x x x x x Methyl Iodide (Iodomethane) mg/l - x x <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.04 <0.04 <0.04 <0.04 <0.001 <0.01 <0.01 x <0.01 <0.01 <0.01 <0.01 <0.01 <0.002 x Methyl methacrylate mg/l - x x x x x x x x x x x x x x x x x x x <0.03 x x x x x x x x x x Methylene Chloride mg/l <0.002 <0.002 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.015 <0.001 <0.001 <0.001 <0.001 <0.015 <0.001 <0.001 x <0.001 <0.001 <0.001 <0.001 <0.001 <0.002 x n-butylbenzene mg/l - <0.001 <0.001 < < < < < < < x <0.001 x <0.001 < x x x x x x x x x x x x x x <0.001 x Propionitrile mg/l - x x x x x x x x x x x x x x x x x x x <0.06 x x x x x x x x x x Propylbenzene mg/l - <0.001 <0.001 < < < < < < < x <0.001 x <0.001 < x x x x x x x x x x x x x x <0.001 x sec-butylbenzene mg/l - <0.001 <0.001 < < < < < < < x <0.001 x <0.001 < x x x x x x x x x x x x x x <0.001 x Styrene mg/l 0.1 <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.001 <0.001 x <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x tert-butyl methyl ether (MTBE) (a) mg/l 0.1 <0.01 <0.01 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 x <0.001 x <0.001 <0.005 x x x x x <0.001 x x x x x x x x <0.01 x tert-butylbenzene mg/l - <0.001 <0.001 < < < < < < < x <0.001 x <0.001 < x x x x x x x x x x x x x x <0.001 x Tetrachloroethene (PCE) mg/l <0.001 < < < < < < < < <0.001 < < < < < < < < < < < x < < < < < x Tetrahydrofuran (THF) mg/l - <0.001 <0.001 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 x x x x <0.010 x x x x x x x x x x x x x x <0.001 x Toluene mg/l 0.75 <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 x <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Total Xylenes (m&p and o) 1 NA mg/l 0.62 <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.002 <0.002 <0.001 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.002 <0.002 x <0.002 <0.002 <0.002 <0.002 <0.002 <0.001 x trans-1,2-dichloroethene mg/l 0.1 <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.005 <0.002 <0.001 <0.001 x <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x trans-1,3-dichloropropene mg/l - <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.001 <0.001 x <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x trans-1,4-dichloro-2-butene mg/l - x x <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.001 <0.001 <0.001 <0.001 <0.010 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.001 <0.001 x <0.001 <0.001 <0.001 <0.001 <0.001 <0.002 x Trichloroethene (TCE) mg/l <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Trichlorofluoromethane mg/l - <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.001 <0.001 x <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Vinyl acetate mg/l - x x <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.001 <0.001 <0.001 <0.001 <0.025 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.01 <0.01 x <0.01 <0.01 <0.01 <0.01 <0.01 <0.002 x Vinyl Chloride mg/l <0.001 <0.001 < < < < < < < < <0.001 < < < < < < < < < < < x < < < < < <0.001 x Trihalomethanes (THM) Bromodichloromethane mg/l - <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 x <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Bromoform mg/l 0.1 <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 <0.001 <0.015 <0.015 <0.015 <0.015 <0.015 <0.015 <0.001 <0.001 x <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Chloroform mg/l 0.1 <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 x <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Dibromochloromethane mg/l - <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 x <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Semi Volatile Organic Compounds 1,2,4,5-Tetrachlorobenzene mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x 1,2-Diphenylhydrazine mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x 1,4-Naphthoquinone mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x 1-Chloronaphthalene NA mg/l - x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x 1-Methylnaphthalene mg/l - x x x x x x x x x x x < < <0.005 <0.01 x x x x <0.001 x x x x x x x x x x 1-Naphthylamine mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x 2,4,6-Trinitrotoluene (TNT) mg/l - x x x x x x x x x x x x x x x x x x x < x x < x x x x x x x JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

70 APPEIX B Las Cruces Foothills Landfill MW-3 Page 3 of 5 Las Cruces Foothills Landfill monitoring well MW-3 baseline standard constituent CAS Number unit GWPS RESULTS FOR MW-3 average deviation date 1/12/99 5/15/99 7/7/99 9/1/99 11/1/99 5/18/00 11/9/00 6/13/01 11/6/01 4/3/02 7/12/02 9/25/02 12/18/02 7/15/03 12/29/03 12/2/04 12/14/05 12/12/06 1/18/08 12/23/08 12/29/09 12/29/10 5/18/11 12/27/11 6/19/12 12/19/12 6/25/13 12/19/13 1/12/99 to 1/12/99 to 5/18/00 5/18/00 2,4-Dinitrotoluene (2,4-DNT) mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x < x x x x x x x 2,6-Dinitrotoluene 1 (2,6-DNT) mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x < x x x x x x x 2-Chloronaphthalene mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x 2-Methylnaphthalene mg/l - x x x x x x x x x x x < < <0.010 <0.01 x x x x <0.001 x x x x x x x x x x 2-Naphthylamine mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x 2-Nitroaniline (o-nitroaniline) mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x 2-Picoline mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x 3,3'-Dichlorobenzidine mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x 3,3'-Dimethylbenzidine mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x 3-Methylcholanthrene mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x 3-Nitroaniline (m-nitroaniline) mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x 4-Aminobiphenyl mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x 4-Bromophenylphenyl ether mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x 4-Chloroaniline (p-chloroanaline) mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x 4-Chlorophenylphenyl ether mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x 4-Nitroaniline (p-nitroaniline) mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x 7,12-Dimethylbenz (a) anthracene mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x Acenaphthene mg/l - x x x x x x x x x <0.02 < < < <0.005 < x x x x < x x x x x x x x x x Acenaphthylene mg/l - x x x x x x x x x <0.02 < < < <0.005 x x x x x <0.001 x x x x x x x x x x Acetophenone mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x alpha,alpha-dimethylphenethylamine mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x Aniline mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x Anthracene mg/l - x x x x x x x x x <0.02 < < < <0.005 x x x x x <0.001 x x x x x x x x x x Benzidine mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x Benzo (a) anthracene mg/l - x x x x x x x x x <0.02 < < < <0.005 x x x x x <0.001 x x x x x x x x x x Benzo (b) fluoranthene mg/l - x x x x x x x x x <0.02 < < < <0.005 x x x x x < x x x x x x x x x x Benzo (g,h,i) perylene mg/l - x x x x x x x x x <0.02 < < < <0.005 x x x x x < x x x x x x x x x x Benzo (k) fluoranthene mg/l - x x x x x x x x x <0.02 < < < <0.005 x x x x x < x x x x x x x x x x Benzo[a]pyrene mg/l <0.001 < < < < < < < <0.02 < < < <0.005 x x x x x <0.001 x x x x x x x x x Benzoic acid mg/l - x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x Benzyl alcohol mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x bis (2-Chloroethoxy) methane mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x bis (2-Chloroethyl) ether mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x bis (2-Chloroisopropyl) ether (bis (2-chloro-1-methylethyl) ether) mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x bis (2-Ethylhexyl) phthalate mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x Butylbenzylphthalate mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x Carbazole mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x Chlorobenzilate mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x Chrysene mg/l - x x x x x x x x x <0.02 < < < <0.005 x x x x x < x x x x x x x x x x Diallate mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x Dibenz(a,j)acridine mg/l - x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x Dibenzo (a,h) anthracene mg/l - x x x x x x x x x <0.02 < < < <0.005 x x x x x < x x x x x x x x x x Dibenzofuran mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x Diethylene Glycol Monobutyl Ether mg/l - x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x Diethylphthalate mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x Dimethylphthalate mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x Di-n-butylphthalate mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x Di-n-octylphthalate mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x Diphenylamine mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x Ethyl methanesulfonate mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x Fluoranthene mg/l - x x x x x x x x x <0.02 < < < <0.005 x x x x x <0.001 x x x x x x x x x x Fluorene mg/l - x x x x x x x x x <0.02 < < < <0.005 x x x x x <0.001 x x x x x x x x x x Hexachlorobenzene mg/l - x x x x x x x x x x x x x x x x x x x < x x x x x x x x x x Hexachlorocyclopentadiene mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x Hexachloroethane mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x Hexachloropropene mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x HMX mg/l - x x x x x x x x x x x x x x x x x x x < x x < x x x x x x x Indeno (1,2,3-cd) pyrene mg/l - x x x x x x x x x <0.02 < < < <0.005 x x x x x < x x x x x x x x x x Isophorone mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x Isosafrole mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x m-dinitrobenzene (1,3-DNB) mg/l - x x x x x x x x x x x x x x x x x x x < x x < x x x x x x x Methapyrilene mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x Methyl methanesulfonate mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x Naphthalene mg/l <0.001 <0.001 <0.001 <0.001 < < < < <0.02 < < < < <0.01 x x x x <0.001 x x x x x x x x x Nitrobenzene mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x < x x x x x x x n-nitrosodiethylamine mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x n-nitrosodimethylamine mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

71 APPEIX B Las Cruces Foothills Landfill MW-3 Page 4 of 5 Las Cruces Foothills Landfill monitoring well MW-3 baseline standard constituent CAS Number unit GWPS RESULTS FOR MW-3 average deviation date 1/12/99 5/15/99 7/7/99 9/1/99 11/1/99 5/18/00 11/9/00 6/13/01 11/6/01 4/3/02 7/12/02 9/25/02 12/18/02 7/15/03 12/29/03 12/2/04 12/14/05 12/12/06 1/18/08 12/23/08 12/29/09 12/29/10 5/18/11 12/27/11 6/19/12 12/19/12 6/25/13 12/19/13 1/12/99 to 1/12/99 to 5/18/00 5/18/00 n-nitrosodi-n-butylamine mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x n-nitrosodinpropylamine mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x n-nitrosodiphenylamine mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x n-nitrosomethylethylamine mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x n-nitrosopiperidine mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x n-nitrosopyrrolidine mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x o-toluidine mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x p-(dimethylamino) azobenzene mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x Pentachlorobenzene mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x Pentachloronitrobenzene mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x Phenacetin mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x Phenanthrene mg/l <0.001 < < < < < < < <0.02 < < < <0.005 x x x x x <0.001 x x x x x x x x x p-phenylenediamine mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x Pronamide mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x Pyrene mg/l <0.001 < < < < < < < <0.02 < < < <0.005 x x x x x <0.001 x x x x x x x x x Pyridine mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x RDX mg/l - x x x x x x x x x x x x x x x x x x x < x x < x x x x x x x Safrole mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x sym-trinitrobenzene 1 (1,3,5-trinitrobenzene, 1,3,5-TN mg/l - x x x x x x x x x x x x x x x x x x x < x x < x x x x x x x Semi Volatile Organic Compounds - Phenolics x 2,3,4,6-Tetrachlorophenol mg/l - x x x x x x x x x <0.02 x x x x x x x x x <0.001 x x x x x x x x x x 2,4,5-Trichlorophenol mg/l - x x x x x x x x x <0.1 x x x x x x x x x <0.001 x x x x x x x x x x 2,4,6-Trichlorophenol mg/l - x x x x x x x x x <0.02 x x x x x x x x x <0.001 x x x x x x x x x x 2,4-Dichlorophenol mg/l - x x x x x x x x x <0.02 x x x x x x x x x <0.001 x x x x x x x x x x 2,4-Dimethylphenol mg/l - x x x x x x x x x <0.02 x x x x x x x x x <0.001 x x x x x x x x x x 2,4-Dinitrophenol mg/l - x x x x x x x x x <0.1 x x x x x x x x x <0.001 x x x x x x x x x x 2,6-Dichlorophenol mg/l - x x x x x x x x x <0.02 x x x x x x x x x <0.001 x x x x x x x x x x 2-Chlorophenol mg/l - x x x x x x x x x <0.02 x x x x x x x x x <0.001 x x x x x x x x x x 2-Methylphenol (o-cresol) mg/l - x x x x x x x x x <0.02 x x x x x x x x x <0.001 x x x x x x x x x x 2-Nitrophenol (o-nitrophenol) mg/l - x x x x x x x x x <0.02 x x x x x x x x x <0.001 x x x x x x x x x x 3-Methylphenol/4-Methylphenol (m&p-cresol) / mg/l - x x x x x x x x x <0.02 x x x x x x x x x <0.001 x x x x x x x x x x 4,6-Dinitro-2-methylphenol (4,6-Dinitro-o-cresol) mg/l - x x x x x x x x x <0.1 x x x x x x x x x <0.001 x x x x x x x x x x p-chloro-m-cresol (4-Chloro-3-methylphenol) mg/l - x x x x x x x x x <0.02 x x x x x x x x x <0.001 x x x x x x x x x x 4-Nitrophenol (p-nitrophenol) mg/l - x x x x x x x x x <0.1 x x x x x x x x x <0.001 x x x x x x x x x x 5-Nitro-o-toluidine mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x Pentachlorophenol mg/l - x x x x x x x x x <0.1 x x x x x x x x x <0.001 x x x x x x x x x x Phenol 1 (a) mg/l x x x x x x x x x < x x x x x x x x x <0.001 x x x x x x x x x x Radium 226 and 228 NA pci/l x <2.5 x x x x Ra-226, total NA pci/l x <2.5 x x x x 0.03 x x x x x x x x Ra-228 1, total NA pci/l x <2.5 x x x x 0.32 x x x x x x x x Chlorinated Pesticides 4,4'-DDD (p,p'-ddd) mg/l - x x x x x x x x x < < x x x x x x x x < x x x x x x x x x x 4,4'-DDE (p,p'-dde) mg/l - x x x x x x x x x < < x x x x x x x x < x x x x x x x x x x 4,4'DDT (p,p'-ddt) mg/l - x x x x x x x x x < < x x x x x x x x < x x x x x x x x x x aldrin mg/l - x x x x x x x x x < < x x x x x x x x < x x x x x x x x x x alpha-bhc mg/l - x x x x x x x x x < < x x x x x x x x < x x x x x x x x x x alpha-chlordane mg/l - x x x x x x x x x < < x x x x x x x x x x x x x x x x x x x beta-bhc mg/l - x x x x x x x x x < < x x x x x x x x < x x x x x x x x x x Chlordane mg/l x x x x x x x x x x x x x x x x x x x < x x x x x x x x x x delta-bhc mg/l - x x x x x x x x x < < x x x x x x x x < x x x x x x x x x x Dieldrin mg/l - x x x x x x x x x < < x x x x x x x x < x x x x x x x x x x Endosulfan I (alpha-endosulfan) mg/l - x x x x x x x x x < < x x x x x x x x < x x x x x x x x x x Endosulfan II (beta-endosulfan) mg/l - x x x x x x x x x < < x x x x x x x x < x x x x x x x x x x Endosulfan sulfate mg/l - x x x x x x x x x < < x x x x x x x x < x x x x x x x x x x Endrin aldehyde mg/l - x x x x x x x x x < < x x x x x x x x < x x x x x x x x x x Endrin ketone mg/l - x x x x x x x x x < < x x x x x x x x x x x x x x x x x x x Endrin mg/l - x x x x x x x x x < < x x x x x x x x < x x x x x x x x x x gamma-bhc mg/l - x x x x x x x x x < < x x x x x x x x < x x x x x x x x x x gamma-chlordane mg/l - x x x x x x x x x < < x x x x x x x x x x x x x x x x x x x Heptachlor epoxide mg/l - x x x x x x x x x < < x x x x x x x x < x x x x x x x x x x Heptachlor mg/l - x x x x x x x x x < < x x x x x x x x < x x x x x x x x x x Isodrin mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x Kepone mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x Methoxychlor mg/l - x x x x x x x x x < < x x x x x x x x < x x x x x x x x x x Toxaphene mg/l - x x x x x x x x x <0.003 < x x x x x x x x <0.001 x x x x x x x x x x Polychlorinated Biphenyls (PCBs) 1 mg/l Arochlor mg/l - x x x x x x x x x < < < < < < x x x x < x x x x x x x x x x Arochlor mg/l - x x x x x x x x x < < < < < < x x x x < x x x x x x x x x x JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

72 APPEIX B Las Cruces Foothills Landfill MW-3 Page 5 of 5 Las Cruces Foothills Landfill monitoring well MW-3 baseline standard constituent CAS Number unit GWPS RESULTS FOR MW-3 average deviation date 1/12/99 5/15/99 7/7/99 9/1/99 11/1/99 5/18/00 11/9/00 6/13/01 11/6/01 4/3/02 7/12/02 9/25/02 12/18/02 7/15/03 12/29/03 12/2/04 12/14/05 12/12/06 1/18/08 12/23/08 12/29/09 12/29/10 5/18/11 12/27/11 6/19/12 12/19/12 6/25/13 12/19/13 1/12/99 to 1/12/99 to 5/18/00 5/18/00 Arochlor mg/l - x x x x x x x x x < < < < < < x x x x < x x x x x x x x x x Arochlor mg/l - x x x x x x x x x < < < < < < x x x x < x x x x x x x x x x Arochlor mg/l - x x x x x x x x x < < < < < < x x x x < x x x x x x x x x x Arochlor mg/l - x x x x x x x x x < < < < < < x x x x < x x x x x x x x x x Arochlor mg/l - x x x x x x x x x < < < < < < x x x x < x x x x x x x x x x Other Pesticides and Herbicides 1 x x x x x x x 2,3,7,8-TCDD ng/l 0.03 x x x x x x x x x x x x x x x x x x x < x x x x x x x x x x 2,4,5-T mg/l - x x x x x x x x x <0.002 x x x x x x x x x < x x x x x x x x x x 2,4-Dichlorophenoxyacetic acid (2,4-D) mg/l - x x x x x x x x x <0.002 x x x x x x x x x < x x x x x x x x x x Dimethoate mg/l - x x x x x x x x x <0.002 x x x x x x x x x <0.001 x x x x x x x x x x Dinoseb mg/l - x x x x x x x x x <0.002 x x x x x x x x x < x x x x x x x x x x Disulfoton mg/l - x x x x x x x x x <0.002 x x x x x x x x x <0.001 x x x x x x x x x x Famphur mg/l - x x x x x x x x x <0.002 x x x x x x x x x <0.001 x x x x x x x x x x Methyl parathion mg/l - x x x x x x x x x <0.002 x x x x x x x x x <0.001 x x x x x x x x x x o,o,o-triethyl phosphorothioate mg/l - x x x x x x x x x <0.003 x x x x x x x x x <0.001 x x x x x x x x x x Parathion (Ethyl) mg/l - x x x x x x x x x <0.002 x x x x x x x x x <0.001 x x x x x x x x x x Phorate mg/l - x x x x x x x x x <0.002 x x x x x x x x x <0.001 x x x x x x x x x x Silvex mg/l - x x x x x x x x x <0.002 x x x x x x x x x < x x x x x x x x x x o,o-diethyl o-2pyrazinyl phosphorothioate (Thionazin mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x x 1 hazardous x parameter not analyzed (^) See section entitled 'Semi volatile organic compounds - phenolics' for break-out of phenolics concentrations. (^^) See section entitled 'Polychlorinated Biphenyls (PCBs)' for break-out of PCB concentrations. (") This concentration attributed to laboratory contamination of method blank and not the presence of antimony in the ground water sampled. (#) Scanned for and not detected, breaks down almost immediately in water. JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

73 JSAI MW-4 JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

74 Page 1 of 5 APPEIX B Las Cruces Foothills Landfill MW-4 Las Cruces Foothills Landfill monitoring well MW-4 *no sampling of MW-4 on 12/12/06 because pump was not working baseline standard constituent CAS Number unit GWPS RESULTS FOR MW-4 average deviation date 1/12/99 5/11/99 7/7/99 9/1/99 11/1/99 5/18/00 11/9/00 6/13/01 11/6/01 4/3/02 7/12/02 9/25/02 12/18/02 7/15/03 12/29/03 12/2/04 12/14/05 6/21/07 1/18/08 12/23/08 12/29/09 12/29/10 12/27/11 6/19/12 12/19/12 6/25/13 12/19/13 1/12/99 to 1/12/99 to 5/18/00 5/18/00 Field Parameters water level elevation ft amsl conductivity µs/cm ph ph units temperature deg F Major Ions calcium mg/l x chloride mg/l x fluoride mg/l x <0.4 x x x x 0.31 x 0.29 x x x x x magnesium mg/l x potassium mg/l x sodium mg/l x sulfate mg/l x alkalinity NA mg/l x bicarbonate alkalinity mg/l x carbonate alkalinity mg/l - <1.0 <1.0 <1.0 <1.0 < x 1 x <20 <2.0 <4.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <1.0 x total dissolved solids NA mg/l 1, x Nitrogen Species ammonia as N mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x <0.05 <0.05 <0.1 <0.5 <0.5 <0.5 <0.5 <0.5 <0.50 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <0.01 x Kjeldahl nitrogen mg/l - <0.1 <0.1 <0.1 <0.1 < <0.1 <0.1 <0.1 x <0.050 < <1 <1.0 x x x x <1.0 x x x x x x x <0.1 x nitrate as N mg/l x <1.0 1 < < nitrite mg/l <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 x <0.10 <0.1 <0.1 <0.1 <1.0 x x x x x x x x x x x x total nitrogen - mg/l - x x x x x x x x x x x x x x x x x x x <1.0 x x x x x x x x x Metals aluminum mg/l 5.0 <0.05 <0.05 <0.05 < <0.05 <0.05 <0.05 <0.05 x <0.10 <0.03 <0.03 <0.03 <3.0 <3.0 x x x <0.02 x <0.02 x x x x x <0.05 x antimony mg/l < < < < < < < < < <0.05 < (") <0.004 < <0.003 x x x x <0.001 <0.001 <0.001 < <0.001 <0.001 <0.001 <0.001 < x arsenic mg/l <0.005 < <0.004 < <0.01 x x x x <0.001 < <0.001 <0.001 <0.001 < barium mg/l x x x x beryllium mg/l < < < < < < < < < <0.003 < <0.001 <0.001 < <0.002 x x x x <0.003 x < <0.002 <0.002 <0.002 <0.002 < x boron mg/l 0.75 < < <0.01 x < <0.1 <0.5 x x x x 0.05 x x x x x x cadmium mg/l < < < < < < < < < <0.005 < <0.001 <0.001 < <0.002 x x x x <0.002 < <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 < x chromium mg/l 0.05 < < < <0.005 < <0.002 < <0.01 x x x x <0.006 < < <0.006 <0.006 <0.006 < cobalt mg/l 0.05 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.010 <0.001 < <0.03 x x x x <0.006 < < <0.006 <0.006 <0.006 <0.006 <0.01 x copper mg/l < < < < < <0.01 < <0.06 x x x x <0.006 < < < iron mg/l 1.0 <0.05 <0.05 <0.05 <0.05 <0.05 <0.01 <0.01 <0.01 <0.01 x <0.10 <0.007 <0.007 <0.10 <0.1 <0.1 <0.1 <0.1 <0.1 <0.05 <0.050 < <0.02 <0.02 <0.02 <0.02 <0.05 x lead mg/l < < < < < <0.005 < <0.002 < <0.01 x x x x <0.005 < < x manganese mg/l 0.2 < <0.02 < < <0.005 <0.005 x < <0.010 <0.03 <0.030 <0.03 <0.03 < < x mercury mg/l < < < < < < < < < <0.07 <0.2 < <0.001 x x x x < x < x x x x x x molybdenum mg/l 1.0 <0.05 <0.05 <0.05 <0.05 < x <0.010 <0.002 <0.002 <0.010 <0.75 x x x x <0.008 x <0.008 x x x x x <0.05 x nickel mg/l <0.005 < <0.002 < <0.05 x x x x <0.01 <0.010 <0.01 < < <0.01 < selenium mg/l < <0.001 <0.01 <0.010 <0.003 < <0.005 x x x x <0.001 <0.001 < <0.001 < < silver mg/l 0.05 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 < <0.02 <0.005 < <0.002 <0.002 <0.010 <0.01 x x x x <0.005 < <0.005 <0.005 <0.005 < <0.005 <0.02 x thallium mg/l < < < < < < < < <0.01 <0.02 <0.003 < <0.001 x x x x <0.001 <0.001 <0.001 < <0.001 <0.001 <0.001 <0.001 < x tin mg/l - x x x x x x x x x <0.01 x x x x x x x x x <0.1 x x x x x x x x x uranium mg/l x < <2.5 x x x x x x x x x x x vanadium mg/l - <0.05 < <0.05 < <0.05 <0.05 <0.05 <0.01 < <0.050 <0.08 x x x x <0.05 <0.050 < <0.05 <0.05 <0.05 < x zinc mg/l 10.0 <0.01 <0.01 <0.01 <0.01 < <0.01 <0.01 <0.01 <0.02 < <0.008 <0.020 <0.05 x x x x <0.02 <0.020 < <0.01 x total organic carbon - mg/l - < < < x <1.0 < <0.5 <1.0 < < < <1.0 < phosphate mg/l - x x x x x x x x x x x x x x x x x x x <0.50 x <0.50 x x x x x x x sulfide mg/l - x x x x x x x x x <1.0 x x x x x x x x x 3 x x x x x x x x x cyanide mg/l 0.2 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.005 < <0.005 <0.005 <0.01 <0.1 x x x x <0.005 x x x x x x x <0.02 x perchlorate mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x total phenolics 1 - mg/l <0.005 <0.02 <0.003 < < (^) <0.003 <0.003 <0.005 <0.003 <0.003 <0.003 <0.003 < < < < < < < < < x Polychlorinated Biphenyls (PCBs) mg/l < < < < < < < < (^^) (^^) (^^) (^^) (^^) (^^) x x x x (^^) x x x x x x x < x Volatile Organic Compounds 1,1,1,2-Tetrachloroethane mg/l 0.02 <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x 1,1,1-Trichloroethane mg/l 0.06 <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x 1,1,2,2-Tetrachloroethane mg/l 0.01 <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x 1,1,2-Trichloroethane mg/l <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x 1,1-Dichloroethane mg/l <0.005 <0.005 <0.005 <0.005 < ,1-Dichloroethylene (1,1-Dichloroethene; 1,1-DCE) mg/l < < < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 < <0.001 <0.001 <0.001 <0.001 < x 1,1-Dichloropropene mg/l - x x x x x x x x x <0.001 <0.001 <0.001 x < x x x x x <0.005 x x x x x x x x x 1,2 Dibromo-3-chloropropane (DBCP) mg/l <0.01 <0.01 < < < < < < < x <0.001 < < < < < < < < < < < < < < < < <0.01 x 1,2,3-Trichlorobenzene mg/l - <0.001 <0.001 < < < < < < < x <0.001 x <0.001 < x x x x x x x x x x x x x <0.001 x 1,2,3-Trichloropropane mg/l 0.01 <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x 1,2,4-Trichlorobenzene mg/l - <0.001 <0.001 < < < < < < < <0.02 <0.001 x <0.001 < x x x x x <0.001 x x x x x x x <0.001 x 1,2-Dichlorobenzene (o-dichlorobenzene) mg/l 0.6 x x x x x x x x x <0.001 <0.001 <0.001 x < <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x x 1,2-Dichloroethane (EDC) mg/l <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

75 Page 2 of 5 APPEIX B Las Cruces Foothills Landfill MW-4 Las Cruces Foothills Landfill monitoring well MW-4 *no sampling of MW-4 on 12/12/06 because pump was not working baseline standard constituent CAS Number unit GWPS RESULTS FOR MW-4 average deviation date 1/12/99 5/11/99 7/7/99 9/1/99 11/1/99 5/18/00 11/9/00 6/13/01 11/6/01 4/3/02 7/12/02 9/25/02 12/18/02 7/15/03 12/29/03 12/2/04 12/14/05 6/21/07 1/18/08 12/23/08 12/29/09 12/29/10 12/27/11 6/19/12 12/19/12 6/25/13 12/19/13 1/12/99 to 1/12/99 to 5/18/00 5/18/00 1,2-Dichloropropane mg/l <0.001 <0.001 < < < < < < < < <0.001 < < < < < < < < < < < < < < < < <0.001 x 1,3-Dichlorobenzene (m-dichlorobenzene) mg/l - <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < x x x x x <0.01 <0.001 x x x x x x <0.001 x 1,3-Dichloropropane mg/l - <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < x x x x x <0.01 x x x x x x x <0.001 x 1,4-Dichlorobenzene (p-dichlorobenzene) mg/l <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.015 <0.015 <0.015 <0.015 <0.015 <0.015 <0.001 < <0.001 <0.001 <0.001 <0.001 <0.001 x 2,2-Dichloropropane mg/l - <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < x x x x x <0.015 x x x x x x x <0.001 x 2-Butanone (Methyl Ethyl Ketone) (MEK) mg/l - <0.01 <0.01 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.01 <0.01 <0.01 <0.01 <0.025 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x 2-Chlorotoluene mg/l - <0.001 <0.001 < < < < < < < x <0.001 x <0.001 < x x x x x x x x x x x x x <0.001 x 2-Hexanone (Butyl Ketone) mg/l 0.02 x x x x x x x x x x x <0.01 <0.01 <0.025 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x 4-Chlorotoluene mg/l - <0.001 <0.001 < < < < < < < x <0.001 x <0.001 < x x x x x x x x x x x x x <0.001 x 4-Methyl-2-pentanone mg/l - x x <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.01 <0.01 <0.001 <0.01 <0.025 <0.015 <0.015 <0.015 <0.015 <0.015 <0.015 x x x x x x x <0.002 x Acetone mg/l - x x <0.01 <0.01 <0.01 <0.01 <0.01 < <0.01 <0.01 <0.01 <0.01 <0.025 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x Acrolein mg/l - x x x x x x x x x <0.005 <0.005 <0.005 x <0.025 x x x x x <0.1 x x x x x x x x x Acrylonitrile mg/l - x x <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.005 <0.005 <0.005 <0.005 <0.025 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.002 x Benzene mg/l <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.001 < <0.001 <0.001 <0.001 <0.001 < < <0.001 <0.001 <0.001 x Bis(chloromethyl) ether mg/l - x x x x x x x x x x x x x x x x x x x (# ) x x x x x x x x x Bromochloromethane mg/l - <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 <0.002 <0.02 <0.002 <0.002 <0.002 <0.002 <0.02 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.001 x Bromomethane (methyl bromide) mg/l - <0.001 <0.001 < < < < < < < <0.002 <0.001 <0.001 <0.001 <0.001 <0.002 <0.02 <0.02 <0.02 <0.02 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.001 x Carbon Disulfide mg/l - x x <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.001 <0.001 <0.001 <0.001 <0.005 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.002 x Carbon Tetrachloride mg/l <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Chlorobenzene mg/l 0.1 <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Chloroethane mg/l - <0.001 <0.001 < < < < < < < <0.002 <0.001 <0.001 <0.001 < <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.001 x Chloromethane (methyl chloride) mg/l 0.02 <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Chloroprene (2-Chloro-1,3-butadiene) mg/l - x x x x x x x x x x x x x x x x x x x x x x x x x x x x x cis-1,2-dichloroethylene (cis-1,2-dichloroethene) mg/l 0.07 <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 < <0.005 <0.005 <0.005 <0.005 < <0.001 x cis-1,3-dichloropropene mg/l - <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Dibromomethane (methylene bromide) mg/l - <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Dichlorodifluoromethane mg/l < x x Ethyl methacrylate mg/l - x x x x x x x x x x x x x x x x x x x <0.01 x x x x x x x x x Ethylbenzene mg/l 0.75 <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Ethylene Dibromide (1,2-Dibromoethane) (EDB) mg/l 5E-05 <0.001 <0.001 < < < < < < < x <0.001 < < < < < < < < < < < < < < < < <0.001 x Hexachlorobutadiene mg/l - <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < x x x x x <0.001 x x x x x x x <0.001 x Isobutyl alcohol mg/l - x x x x x x x x x x x x x x x x x x x <0.05 x x x x x x x x x Isopropylbenzene mg/l - <0.001 <0.001 < < < < < < < x <0.001 x <0.001 < x x x x x x x x x x x x x <0.001 x Methacrylonitrile mg/l - x x x x x x x x x x x x x x x x x x x <0.005 x x x x x x x x x Methyl Iodide (Iodomethane) mg/l - x x <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.005 <0.005 <0.005 <0.005 <0.005 <0.04 <0.04 <0.04 <0.04 <0.04 <0.04 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.002 x Methyl methacrylate mg/l - x x x x x x x x x x x x x x x x x x x <0.03 x x x x x x x x x Methylene Chloride mg/l <0.002 <0.002 < < < < < <0.002 x n-butylbenzene mg/l - <0.001 <0.001 < < < < < < < x <0.001 x <0.001 < x x x x x x x x x x x x x <0.001 x Propionitrile mg/l - x x x x x x x x x x x x x x x x x x x <0.06 <0.01 x x x x x x x x Propylbenzene mg/l - <0.001 <0.001 < < < < < < < x <0.001 x <0.001 < x x x x x x x x x x x x x <0.001 x sec-butylbenzene mg/l - <0.001 <0.001 < < < < < < < x <0.001 x <0.001 < x x x x x x x x x x x x x <0.001 x Styrene mg/l 0.1 <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x tert-butyl methyl ether (MTBE) (a) mg/l 0.1 <0.01 <0.01 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 x <0.001 x <0.001 <0.005 x x x x x <0.001 x x x x x x x <0.01 x tert-butylbenzene mg/l - <0.001 <0.001 < < < < < < < x <0.001 x <0.001 < x x x x x x x x x x x x x <0.001 x Tetrachloroethene (PCE) mg/l < Tetrahydrofuran (THF) mg/l - <0.001 <0.001 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 x x x x <0.010 x x x x x x x x x x x x x <0.001 x Toluene mg/l 0.75 <0.001 <0.001 < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 < <0.001 <0.001 <0.001 <0.001 <0.001 x Total Xylenes (m&p and o) 1 NA mg/l 0.62 <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.002 <0.002 <0.001 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.002 < <0.002 <0.002 <0.002 <0.002 <0.001 x trans-1,2-dichloroethene mg/l 0.1 <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.005 <0.002 <0.002 <0.002 <0.002 <0.002 <0.001 < <0.001 <0.001 <0.001 <0.001 <0.001 x trans-1,3-dichloropropene mg/l - <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x trans-1,4-dichloro-2-butene mg/l - x x <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.001 <0.001 <0.001 <0.001 <0.010 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.002 x Trichloroethene (TCE) mg/l < Trichlorofluoromethane mg/l < <0.01 <0.01 <0.01 <0.01 < < Vinyl acetate mg/l - x x <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.001 <0.001 <0.001 <0.001 <0.025 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.002 x Vinyl Chloride mg/l <0.001 <0.001 < < < < < < < < <0.001 < < < < < < < < < < < < < <0.001 x Trihalomethanes (THM) Bromodichloromethane mg/l - <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Bromoform mg/l 0.1 <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 <0.001 <0.015 <0.015 <0.015 <0.015 <0.015 <0.015 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Chloroform mg/l 0.1 <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Dibromochloromethane mg/l - <0.001 <0.001 < < < < < < < <0.001 <0.001 <0.001 <0.001 < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Semi Volatile Organic Compounds 1,2,4,5-Tetrachlorobenzene mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x 1,2-Diphenylhydrazine mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x 1,4-Naphthoquinone mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x 1-Chloronaphthalene NA mg/l - x x x x x x x x x x x x x x x x x x x x x x x x x x x x x 1-Methylnaphthalene mg/l - x x x x x x x x x x x < < <0.005 <0.01 x x x x <0.001 x x x x x x x x x 1-Naphthylamine mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x 2,4,6-Trinitrotoluene (TNT) mg/l - x x x x x x x x x x x x x x x x x x x < x x x x x x x x x JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

76 Page 3 of 5 APPEIX B Las Cruces Foothills Landfill MW-4 Las Cruces Foothills Landfill monitoring well MW-4 *no sampling of MW-4 on 12/12/06 because pump was not working baseline standard constituent CAS Number unit GWPS RESULTS FOR MW-4 average deviation date 1/12/99 5/11/99 7/7/99 9/1/99 11/1/99 5/18/00 11/9/00 6/13/01 11/6/01 4/3/02 7/12/02 9/25/02 12/18/02 7/15/03 12/29/03 12/2/04 12/14/05 6/21/07 1/18/08 12/23/08 12/29/09 12/29/10 12/27/11 6/19/12 12/19/12 6/25/13 12/19/13 1/12/99 to 1/12/99 to 5/18/00 5/18/00 2,4-Dinitrotoluene (2,4-DNT) mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x 2,6-Dinitrotoluene 1 (2,6-DNT) mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x 2-Chloronaphthalene mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x 2-Methylnaphthalene mg/l - x x x x x x x x x x x < < <0.010 <0.01 x x x x <0.001 x x x x x x x x x 2-Naphthylamine mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x 2-Nitroaniline (o-nitroaniline) mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x 2-Picoline mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x 3,3'-Dichlorobenzidine mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x 3,3'-Dimethylbenzidine mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x 3-Methylcholanthrene mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x 3-Nitroaniline (m-nitroaniline) mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x 4-Aminobiphenyl mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x 4-Bromophenylphenyl ether mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x 4-Chloroaniline (p-chloroanaline) mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x 4-Chlorophenylphenyl ether mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x 4-Nitroaniline (p-nitroaniline) mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x 7,12-Dimethylbenz (a) anthracene mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x Acenaphthene mg/l - x x x x x x x x x <0.02 < < < <0.005 < x x x x < x x x x x x x x x Acenaphthylene mg/l - x x x x x x x x x <0.02 < < < <0.005 x x x x x <0.001 x x x x x x x x x Acetophenone mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x alpha,alpha-dimethylphenethylamine mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x Aniline mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x Anthracene mg/l - x x x x x x x x x <0.02 < < < <0.005 x x x x x <0.001 x x x x x x x x x Benzidine mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x Benzo (a) anthracene mg/l - x x x x x x x x x <0.02 < < < <0.005 x x x x x <0.001 x x x x x x x x x Benzo (b) fluoranthene mg/l - x x x x x x x x x <0.02 < < < <0.005 x x x x x < x x x x x x x x x Benzo (g,h,i) perylene mg/l - x x x x x x x x x <0.02 < < < <0.005 x x x x x < x x x x x x x x x Benzo (k) fluoranthene mg/l - x x x x x x x x x <0.02 < < < <0.005 x x x x x < x x x x x x x x x Benzo[a]pyrene mg/l <0.1 <0.001 < < < < < < < <0.02 < < < <0.005 x x x x x <0.001 x x x x x x x <0.1 x Benzoic acid mg/l x x x x x x x x x x x x x x x x x x x x x x x Benzyl alcohol mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x bis (2-Chloroethoxy) methane mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x bis (2-Chloroethyl) ether mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x bis (2-Chloroisopropyl) ether (bis (2-chloro-1-methylethyl) ether) mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x bis (2-Ethylhexyl) phthalate mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x Butylbenzylphthalate mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x Carbazole mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x Chlorobenzilate mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x Chrysene mg/l - x x x x x x x x x <0.02 < < < <0.005 x x x x x < x x x x x x x x x Diallate mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x Dibenz(a,j)acridine mg/l - x x x x x x x x x x x x x x x x x x x x x x x x x x x x x Dibenzo (a,h) anthracene mg/l - x x x x x x x x x <0.02 < < < <0.005 x x x x x < x x x x x x x x x Dibenzofuran mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x Diethylene Glycol Monobutyl Ether mg/l - x x x x x x x x x x x x x x x x x x x x x x x x x x x x x Diethylphthalate mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x Dimethylphthalate mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x Di-n-butylphthalate mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x Di-n-octylphthalate mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x Diphenylamine mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x Ethyl methanesulfonate mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x Fluoranthene mg/l - x x x x x x x x x <0.02 < < < <0.005 x x x x x <0.001 x x x x x x x x x Fluorene mg/l - x x x x x x x x x <0.02 < < < <0.005 x x x x x <0.001 x x x x x x x x x Hexachlorobenzene mg/l - x x x x x x x x x x x x x x x x x x x < x x x x x x x x x Hexachlorocyclopentadiene mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x Hexachloroethane mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x Hexachloropropene mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x HMX mg/l - x x x x x x x x x x x x x x x x x x x < x x x x x x x x x Indeno (1,2,3-cd) pyrene mg/l - x x x x x x x x x <0.02 < < < <0.005 x x x x x < x x x x x x x x x Isophorone mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x Isosafrole mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x m-dinitrobenzene (1,3-DNB) mg/l - x x x x x x x x x x x x x x x x x x x < x x x x x x x x x Methapyrilene mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x Methyl methanesulfonate mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x Naphthalene mg/l 0.03 <1.0 <0.001 <0.001 <0.001 <0.001 < < <0.02 < < < <0.005 <0.01 x x x x <0.001 x x x x x x x <1.0 x Nitrobenzene mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x n-nitrosodiethylamine mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x n-nitrosodimethylamine mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

77 Page 4 of 5 APPEIX B Las Cruces Foothills Landfill MW-4 Las Cruces Foothills Landfill monitoring well MW-4 *no sampling of MW-4 on 12/12/06 because pump was not working baseline standard constituent CAS Number unit GWPS RESULTS FOR MW-4 average deviation date 1/12/99 5/11/99 7/7/99 9/1/99 11/1/99 5/18/00 11/9/00 6/13/01 11/6/01 4/3/02 7/12/02 9/25/02 12/18/02 7/15/03 12/29/03 12/2/04 12/14/05 6/21/07 1/18/08 12/23/08 12/29/09 12/29/10 12/27/11 6/19/12 12/19/12 6/25/13 12/19/13 1/12/99 to 1/12/99 to 5/18/00 5/18/00 n-nitrosodi-n-butylamine mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x n-nitrosodinpropylamine mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x n-nitrosodiphenylamine mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x n-nitrosomethylethylamine mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x n-nitrosopiperidine mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x n-nitrosopyrrolidine mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x o-toluidine mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x p-(dimethylamino) azobenzene mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x Pentachlorobenzene mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x Pentachloronitrobenzene mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x Phenacetin mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x Phenanthrene mg/l - <0.1 <0.001 < < < < < < < <0.02 < < < <0.005 x x x x x <0.001 x x x x x x x <0.1 x p-phenylenediamine mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x Pronamide mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x Pyrene mg/l - <0.25 <0.001 < < < < < < < <0.02 < < < <0.005 x x x x x <0.001 x x x x x x x <0.25 x Pyridine mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x RDX mg/l - x x x x x x x x x x x x x x x x x x x < x x x x x x x x x Safrole mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x sym-trinitrobenzene 1 (1,3,5-trinitrobenzene, 1,3,5-TNB) mg/l - x x x x x x x x x x x x x x x x x x x < x x x x x x x x x Semi Volatile Organic Compounds - Phenolics x 2,3,4,6-Tetrachlorophenol mg/l - x x x x x x x x x <0.02 x x x x x x x x x <0.001 x x x x x x x x x 2,4,5-Trichlorophenol mg/l - x x x x x x x x x <0.1 x x x x x x x x x <0.001 x x x x x x x x x 2,4,6-Trichlorophenol mg/l - x x x x x x x x x <0.02 x x x x x x x x x <0.001 x x x x x x x x x 2,4-Dichlorophenol mg/l - x x x x x x x x x <0.02 x x x x x x x x x <0.001 x x x x x x x x x 2,4-Dimethylphenol mg/l - x x x x x x x x x <0.02 x x x x x x x x x <0.001 x x x x x x x x x 2,4-Dinitrophenol mg/l - x x x x x x x x x <0.1 x x x x x x x x x <0.001 x x x x x x x x x 2,6-Dichlorophenol mg/l - x x x x x x x x x <0.02 x x x x x x x x x <0.001 x x x x x x x x x 2-Chlorophenol mg/l - x x x x x x x x x <0.02 x x x x x x x x x <0.001 x x x x x x x x x 2-Methylphenol (o-cresol) mg/l - x x x x x x x x x <0.02 x x x x x x x x x <0.001 x x x x x x x x x 2-Nitrophenol (o-nitrophenol) mg/l - x x x x x x x x x <0.02 x x x x x x x x x <0.001 x x x x x x x x x 3-Methylphenol/4-Methylphenol (m&p-cresol) / mg/l - x x x x x x x x x <0.02 x x x x x x x x x <0.001 x x x x x x x x x 4,6-Dinitro-2-methylphenol (4,6-Dinitro-o-cresol) mg/l - x x x x x x x x x <0.1 x x x x x x x x x <0.001 x x x x x x x x x 4-Chloro-3-methylphenol (p-chloro-m-cresol) mg/l - x x x x x x x x x <0.02 x x x x x x x x x <0.001 x x x x x x x x x 4-Nitrophenol (p-nitrophenol) mg/l - x x x x x x x x x <0.1 x x x x x x x x x <0.001 x x x x x x x x x 5-Nitro-o-toluidine mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x Pentachlorophenol mg/l - x x x x x x x x x <0.1 x x x x x x x x x <0.001 x x x x x x x x x Phenol 1 (a) mg/l x x x x x x x x x < x x x x x x x x x <0.001 x x x x x x x x x Radium 226 and 228 NA pci/l x <2.5 x x x x Ra-226, total NA pci/l x <2.5 x x x x 0.13 x x x x x x x Ra-228 1, total NA pci/l x <2.5 x x x x 1.4 x x x x x x x Chlorinated Pesticides 4,4'-DDD (p,p'-ddd) mg/l - x x x x x x x x x < < x x x x x x x x < x x x x x x x x x 4,4'-DDE (p,p'-dde) mg/l - x x x x x x x x x < < x x x x x x x x < x x x x x x x x x 4,4'DDT (p,p'-ddt) mg/l - x x x x x x x x x < < x x x x x x x x < x x x x x x x x x aldrin mg/l - x x x x x x x x x < < x x x x x x x x < x x x x x x x x x alpha-bhc mg/l - x x x x x x x x x < < x x x x x x x x < x x x x x x x x x alpha-chlordane mg/l - x x x x x x x x x < < x x x x x x x x x x x x x x x x x x beta-bhc mg/l - x x x x x x x x x < < x x x x x x x x < x x x x x x x x x Chlordane mg/l x x x x x x x x x x x x x x x x x x x < x x x x x x x x x delta-bhc mg/l - x x x x x x x x x < < x x x x x x x x < x x x x x x x x x Dieldrin mg/l - x x x x x x x x x < < x x x x x x x x < x x x x x x x x x Endosulfan I (alpha-endosulfan) mg/l - x x x x x x x x x < < x x x x x x x x < x x x x x x x x x Endosulfan II (beta-endosulfan) mg/l - x x x x x x x x x < < x x x x x x x x < x x x x x x x x x Endosulfan sulfate mg/l - x x x x x x x x x < < x x x x x x x x < x x x x x x x x x Endrin aldehyde mg/l - x x x x x x x x x < < x x x x x x x x < x x x x x x x x x Endrin ketone mg/l - x x x x x x x x x < < x x x x x x x x x x x x x x x x x x Endrin mg/l - x x x x x x x x x < < x x x x x x x x < x x x x x x x x x gamma-bhc mg/l - x x x x x x x x x < < x x x x x x x x < x x x x x x x x x gamma-chlordane mg/l - x x x x x x x x x < < x x x x x x x x x x x x x x x x x x Heptachlor epoxide mg/l - x x x x x x x x x < < x x x x x x x x < x x x x x x x x x Heptachlor mg/l - x x x x x x x x x < < x x x x x x x x < x x x x x x x x x Isodrin mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x Kepone mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x Methoxychlor mg/l - x x x x x x x x x < < x x x x x x x x < x x x x x x x x x Toxaphene mg/l - x x x x x x x x x <0.003 < x x x x x x x x <0.001 x x x x x x x x x Polychlorinated Biphenyls (PCBs) 1 mg/l Arochlor mg/l - x x x x x x x x x < < < < < < x x x x < x x x x x x x x x Arochlor mg/l - x x x x x x x x x < < < < < < x x x x < x x x x x x x x x JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

78 Page 5 of 5 APPEIX B Las Cruces Foothills Landfill MW-4 Las Cruces Foothills Landfill monitoring well MW-4 *no sampling of MW-4 on 12/12/06 because pump was not working baseline standard constituent CAS Number unit GWPS RESULTS FOR MW-4 average deviation date 1/12/99 5/11/99 7/7/99 9/1/99 11/1/99 5/18/00 11/9/00 6/13/01 11/6/01 4/3/02 7/12/02 9/25/02 12/18/02 7/15/03 12/29/03 12/2/04 12/14/05 6/21/07 1/18/08 12/23/08 12/29/09 12/29/10 12/27/11 6/19/12 12/19/12 6/25/13 12/19/13 1/12/99 to 1/12/99 to 5/18/00 5/18/00 Arochlor mg/l - x x x x x x x x x < < < < < < x x x x < x x x x x x x x x Arochlor mg/l - x x x x x x x x x < < < < < < x x x x < x x x x x x x x x Arochlor mg/l - x x x x x x x x x < < < < < < x x x x < x x x x x x x x x Arochlor mg/l - x x x x x x x x x < < < < < < x x x x < x x x x x x x x x Arochlor mg/l - x x x x x x x x x < < < < < < x x x x < x x x x x x x x x Other Pesticides and Herbicides 1 2,3,7,8-TCDD ng/l 0.03 x x x x x x x x x x x x x x x x x x x < x x x x x x x x x 2,4,5-T mg/l - x x x x x x x x x <0.002 x x x x x x x x x < x x x x x x x x x 2,4-Dichlorophenoxyacetic acid (2,4-D) mg/l - x x x x x x x x x <0.002 x x x x x x x x x < x x x x x x x x x Dimethoate mg/l - x x x x x x x x x <0.002 x x x x x x x x x <0.001 x x x x x x x x x Dinoseb mg/l - x x x x x x x x x <0.002 x x x x x x x x x < x x x x x x x x x Disulfoton mg/l - x x x x x x x x x <0.002 x x x x x x x x x <0.001 x x x x x x x x x Famphur mg/l - x x x x x x x x x <0.002 x x x x x x x x x <0.001 x x x x x x x x x Methyl parathion mg/l - x x x x x x x x x <0.002 x x x x x x x x x <0.001 x x x x x x x x x o,o,o-triethyl phosphorothioate mg/l - x x x x x x x x x <0.003 x x x x x x x x x <0.001 x x x x x x x x x Parathion (Ethyl) mg/l - x x x x x x x x x <0.002 x x x x x x x x x <0.001 x x x x x x x x x Phorate mg/l - x x x x x x x x x <0.002 x x x x x x x x x <0.001 x x x x x x x x x Silvex mg/l - x x x x x x x x x <0.002 x x x x x x x x x < x x x x x x x x x o,o-diethyl o-2pyrazinyl phosphorothioate (Thionazin) mg/l - x x x x x x x x x x x x x x x x x x x <0.001 x x x x x x x x x * baseline averages and standard deviations are based on 1999 and 2000 data only as per requirements in Environmental Protection, subpart 803. Ground Water Sampling and Analysis, hazardous x parameter not analyzed (^) See section entitled 'Semi volatile organic compounds - phenolics' for break-out of phenolics concentrations. (^^) See section entitled 'Polychlorinated Biphenyls (PCBs)' for break-out of PCB concentrations. (") This concentration attributed to laboratory contamination of method blank and not the presence of antimony in the ground water sampled. (#) Scanned for and not detected, breaks down almost immediately in water. JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

79 JSAI MW-5 JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

80 APPEIX B Las Cruces Foothills Landfill MW-5 Page 1 of 6 Las Cruces Foothills Landfill monitoring well MW-5 baseline standard constituent CAS Number unit GWPS RESULTS FOR MW-5 average deviation date 7/15/03 8/27/03 9/29/03 10/29/03 11/25/03 12/29/03 12/2/04 12/14/05 12/12/06 1/18/08 12/23/08 12/29/09 12/29/10 12/28/11 6/19/12 12/20/12 6/26/13 7/15/03 to 7/15/03 to 12/2/04 12/2/04 Field Parameters water level elevation ft amsl , conductivity µs/cm ph ph units (a) temperature deg F Major Ions calcium mg/l chloride mg/l fluoride mg/l x x x x 0.59 x 0.58 x x x x magnesium mg/l potassium mg/l sodium mg/l sulfate mg/l alkalinity NA mg/l bicarbonate alkalinity mg/l carbonate alkalinity mg/l - <20 <2 <2.0 <2.0 <2.0 <2.0 <4.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 x total dissolved solids NA mg/l 1, Nitrogen Species ammonia as N mg/l - <0.1 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.50 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <0.5 x Kjeldahl nitrogen mg/l - <1 <1.0 <1.0 <1.0 <1.0 <1.0 x x x x <1.0 x x x x x x <1.0 x nitrate as N mg/l nitrite mg/l - < x x x x x x x x x x x total nitrogen - mg/l - x x x x x x x x x x 2.7 x x x x x x x x Metals aluminum mg/l <3.0 <3.0 <3.0 <3.0 <3.0 <3.0 x x x <0.02 x 0.02 x x x x <3.0 x antimony mg/l < <0.003 <0.003 <0.003 <0.003 <0.003 x x x x <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.003 x arsenic mg/l <0.01 <0.01 <0.01 <0.01 <0.01 x x x x x barium mg/l x x x x beryllium mg/l < <0.002 <0.002 <0.002 <0.002 <0.002 x x x x <0.003 x < <0.002 <0.002 <0.002 <0.002 x boron mg/l 0.75 <0.1 <0.5 <0.5 <0.5 <0.5 <0.5 x x x x x x x x x <0.5 x cadmium mg/l < <0.002 <0.002 <0.002 <0.002 <0.002 x x x x <0.002 < <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 x chromium mg/l <0.01 <0.01 <0.01 <0.01 <0.01 x x x x < < <0.006 <0.006 < x cobalt mg/l <0.03 <0.03 <0.03 <0.03 <0.03 x x x x <0.006 < < <0.006 <0.006 < x copper mg/l <0.06 <0.06 <0.06 <0.06 <0.06 x x x x <0.006 < <0.006 <0.006 <0.006 <0.006 < x iron mg/l <0.1 <0.1 <0.1 <0.1 <0.1 x <0.1 <0.1 <0.1 < <0.05 < <0.02 < x lead mg/l <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.005 < <0.005 <0.005 <0.005 <0.005 < x manganese mg/l 0.2 <0.010 <0.03 <0.03 <0.03 <0.03 <0.03 x <0.03 <0.03 <0.03 < < <0.002 <0.002 <0.002 <0.03 x mercury mg/l < <0.001 <0.001 <0.001 <0.001 <0.001 x x x x < x < x x x x <0.001 x molybdenum mg/l 1.0 <0.010 <0.75 <0.75 <0.75 <0.75 <0.75 x x x x <0.008 x <0.008 x x x x <0.75 x nickel mg/l <0.05 <0.05 <0.05 <0.05 <0.05 x x x x < <0.01 <0.01 <0.01 <0.01 < x selenium mg/l <0.005 <0.005 <0.005 <0.005 <0.005 x x x x <0.001 < < x silver mg/l 0.05 <0.010 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.005 < <0.005 <0.005 <0.005 <0.005 <0.005 <0.01 x thallium mg/l <0.001 <0.001 <0.001 <0.001 <0.001 x x x x <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 < x tin mg/l - <0.10 x x x x <0.4 x x x x <0.1 x x x x x x <0.4 x uranium mg/l 0.03 <0.002 <2.5 <2.5 <2.5 <2.5 <2.5 x x x x x x x x x x <2.5 x vanadium mg/l - <0.050 <0.08 <0.08 <0.08 <0.08 <0.08 x x x x <0.05 <0.050 < <0.05 <0.05 <0.05 <0.08 x zinc mg/l <0.05 <0.05 <0.05 <0.05 <0.05 x x x x <0.02 <0.020 < <0.01 <0.01 < x total organic carbon - mg/l - 1 <1.0 <1.0 <1.0 < <0.5 <0.5 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 < phosphate mg/l - x x x x x x x x x x <0.50 x <0.50 x x x x x x sulfide mg/l - <0.1 x x x x <4.0 x x x x 2 x x x x x x <4.0 x JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

81 APPEIX B Las Cruces Foothills Landfill MW-5 Page 2 of 6 Las Cruces Foothills Landfill monitoring well MW-5 baseline standard constituent CAS Number unit GWPS RESULTS FOR MW-5 average deviation date 7/15/03 8/27/03 9/29/03 10/29/03 11/25/03 12/29/03 12/2/04 12/14/05 12/12/06 1/18/08 12/23/08 12/29/09 12/29/10 12/28/11 6/19/12 12/20/12 6/26/13 7/15/03 to 7/15/03 to 12/2/04 12/2/04 cyanide mg/l 0.2 <0.01 <0.1 <0.1 <0.1 <0.1 <0.1 x x x x <0.005 x x x x x x <0.1 x perchlorate mg/l - x x x x x x x x x x <0.001 x x x x x x x x total phenolics 1 - mg/l <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 < < < < < < < < <0.003 x Polychlorinated Biphenyls (PCBs) mg/l (^^) (^^) (^^) (^^) (^^) (^^) x x x x (^^) x x x x x x (^^) (^^) Volatile Organic Compounds 1,1,1,2-Tetrachloroethane mg/l 0.02 < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.005 x 1,1,1-Trichloroethane mg/l 0.06 < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.005 x 1,1,2,2-Tetrachloroethane mg/l 0.01 < <0.001 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.005 x 1,1,2-Trichloroethane mg/l < <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.002 x 1,1-Dichloroethane mg/l < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.005 x 1,1-Dichloroethylene (1,1-Dichloroethene; 1,1-DCE) mg/l < <0.001 <0.001 <0.001 <0.001 <0.001 x x x x <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x 1,1-Dichloropropene mg/l - < <0.005 <0.005 <0.005 <0.005 <0.005 x x x x <0.005 x x x x x x <0.005 x 1,2 Dibromo-3-chloropropane (DBCP) mg/l <0.01 < < < < < < < < < < < < < < < < < x 1,2,3-Trichlorobenzene mg/l - < x x x x x x x x x x x x x x x x < x 1,2,3-Trichloropropane mg/l 0.01 < <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 x 1,2,4-Trichlorobenzene mg/l - < x x x x x x x x x <0.001 x x x x x x < x 1,2-Dichlorobenzene (o-dichlorobenzene) mg/l 0.6 < <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 x 1,2-Dichloroethane (EDC) mg/l < <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x 1,2-Dichloropropane mg/l < < < < < < < < < < < < < < < < < < x 1,3-Dichlorobenzene (m-dichlorobenzene) mg/l - < <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 <0.001 x x x x x <0.01 x 1,3-Dichloropropane mg/l - < <0.005 <0.01 <0.01 <0.01 <0.01 x x x x <0.01 x x x x x x <0.01 x 1,4-Dichlorobenzene (p-dichlorobenzene) mg/l < <0.015 <0.015 <0.015 <0.015 <0.015 <0.015 <0.015 <0.015 <0.015 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.015 x 2,2-Dichloropropane mg/l - < < <0.015 <0.015 <0.015 <0.015 x x x x <0.015 x x x x x x <0.015 x 2-Butanone (Methyl Ethyl Ketone) (MEK) mg/l - <0.025 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x 2-Chlorotoluene mg/l - < x x x x x x x x x x x x x x x x < x 2-Hexanone (Butyl Ketone) mg/l 0.02 <0.025 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.05 x 4-Chlorotoluene mg/l - < x x x x x x x x x x x x x x x x < x 4-Methyl-2-pentanone mg/l - <0.025 <0.015 <0.015 <0.015 <0.015 <0.015 <0.015 <0.015 <0.015 <0.015 <0.015 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.015 x Acetone mg/l - <0.025 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.01 < <0.01 <0.01 <0.01 <0.1 x Acetonitrile mg/l - <0.100 <0.100 <0.1 <0.1 <0.1 <0.1 x x x x <0.1 x x x x x x <0.1 x Acrolein mg/l - <0.025 <0.1 <0.1 <0.1 <0.1 <0.1 x x x x <0.1 x x x x x x <0.1 x Acrylonitrile mg/l - <0.025 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.2 x Allyl chloride mg/l - x <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.01 x x x x x x <0.01 x Benzene mg/l < <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Bis(chloromethyl) ether mg/l - x x x x x x x x x x (#) x x x x x x x x Bromochloromethane mg/l - <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 x Bromomethane (methyl bromide) mg/l - <0.001 <0.01 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.02 x Carbon Disulfide mg/l - <0.005 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.1 x Carbon Tetrachloride mg/l < <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.002 x Chlorobenzene mg/l 0.1 < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.005 x Chloroethane mg/l - < <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.01 x Chloromethane (methyl chloride) mg/l 0.02 < <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Chloroprene (2-Chloro-1,3-butadiene) mg/l - <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 x x x x x x x x x x x <0.05 x cis-1,2-dichloroethylene (cis-1,2-dichloroethene) mg/l 0.07 < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 < <0.001 <0.001 <0.001 <0.005 x cis-1,3-dichloropropene mg/l - < <0.001 <0.02 <0.02 <0.02 <0.02 x x x x <0.02 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.02 x Dibromomethane (methylene bromide) mg/l - < <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.02 x Dichlorodifluoromethane mg/l <0.005 <0.005 <0.005 <0.005 <0.005 x x x < < <0.005 x Ethyl methacrylate mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.01 x x x x x x <0.01 x Ethylbenzene mg/l 0.75 < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.005 x Ethylene Dibromide (1,2-Dibromoethane) (EDB) mg/l < < < < < < < < < < < < < < < < < x Hexachlorobutadiene mg/l - < <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

82 APPEIX B Las Cruces Foothills Landfill MW-5 Page 3 of 6 Las Cruces Foothills Landfill monitoring well MW-5 baseline standard constituent CAS Number unit GWPS RESULTS FOR MW-5 average deviation date 7/15/03 8/27/03 9/29/03 10/29/03 11/25/03 12/29/03 12/2/04 12/14/05 12/12/06 1/18/08 12/23/08 12/29/09 12/29/10 12/28/11 6/19/12 12/20/12 6/26/13 7/15/03 to 7/15/03 to 12/2/04 12/2/04 Isobutyl alcohol mg/l - <0.1 <0.05 <0.05 <0.05 <0.05 <0.05 x x x x <0.05 x x x x x x <0.05 x Isopropylbenzene mg/l - < x x x x x x x x x x x x x x x x < x Methacrylonitrile mg/l - <0.025 <0.005 <0.005 <0.005 <0.005 <0.005 x x x x <0.005 x x x x x x <0.005 x Methyl Iodide (Iodomethane) mg/l - <0.005 <0.04 <0.04 <0.04 <0.04 <0.04 <0.04 <0.04 <0.04 <0.04 <0.04 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.04 x Methyl methacrylate mg/l - <0.03 <0.03 <0.03 <0.03 <0.03 <0.03 x x x x <0.03 x x x x x x <0.03 x Methylene Chloride mg/l < <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x n-butylbenzene mg/l - < x x x x x x x x x x x x x x x x < x Propionitrile mg/l - <0.01 <0.06 <0.06 <0.06 <0.06 <0.06 x x x x <0.06 x x x x x x <0.06 x Propylbenzene mg/l - < x x x x x x x x x x x x x x x x < x sec-butylbenzene mg/l - < x x x x x x x x x x x x x x x x < x Styrene mg/l 0.1 < <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 x tert-butyl methyl ether (MTBE) (a) mg/l 0.1 <0.005 x x x x x x x x x <0.001 x x x x x x <0.005 x tert-butylbenzene mg/l - < x x x x x x x x x x x x x x x x < x Tetrachloroethene (PCE) mg/l < Tetrahydrofuran (THF) mg/l - <0.01 x x x x x x x x x x x x x x x x <0.01 x Toluene mg/l <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 < x Total Xylenes (m&p and o) 1 NA mg/l 0.62 <0.001 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.005 x trans-1,2-dichloroethene mg/l 0.1 < <0.005 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.002 x trans-1,3-dichloropropene mg/l - <0.001 <0.001 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 x trans-1,4-dichloro-2-butene mg/l - <0.010 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.1 x Trichloroethene (TCE) mg/l < <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 < <0.001 <0.001 <0.001 <0.001 x Trichlorofluoromethane mg/l - <0.001 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.001 < <0.001 <0.001 <0.001 <0.01 x Vinyl acetate mg/l - <0.025 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.05 x Vinyl chloride mg/l < < < < < < < < < < < < < < < < < < x Trihalomethanes (THM) Bromodichloromethane mg/l - < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.005 x Bromoform mg/l 0.1 <0.001 <0.001 <0.015 <0.015 <0.015 <0.015 <0.015 <0.015 <0.015 <0.015 <0.015 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.015 x Chloroform mg/l 0.1 < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.005 x Dibromochloromethane mg/l - < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.005 x Semi Volatile Organic Compounds 1,2,4,5-Tetrachlorobenzene mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x 1,2-Diphenylhydrazine mg/l - <0.005 x x x x x x x x x <0.001 x x x x x x <0.005 x 1,4-Naphthoquinone mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x 1-Chloronaphthalene NA mg/l - <0.005 x x x x x x x x x x x x x x x x <0.005 x 1-Methylnaphthalene mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x 1-Naphthylamine mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x 2,4,6-Trinitrotoluene (TNT) mg/l - x x x x x x x x x x < x x x x x x x x 2,4-Dinitrotoluene (2,4-DNT) mg/l - <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 x x x x <0.001 x x x x x x <0.005 x 2,6-Dinitrotoluene 1 (2,6-DNT) mg/l - <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 x x x x <0.001 x x x x x x <0.005 x 2-Acetylaminofluorene mg/l - <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 x x x x <0.001 x x x x x x <0.02 x 2-Chloronaphthalene mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x 2-Methylnaphthalene mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x 2-Naphthylamine mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x 2-Nitroaniline (o-nitroaniline) mg/l - <0.05 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x 2-Picoline mg/l - <0.01 x x x x x x x x x <0.001 x x x x x x <0.01 x 3,3'-Dichlorobenzidine mg/l - <0.05 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x 3,3'-Dimethylbenzidine mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x 3-Methylcholanthrene mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x 3-Nitroaniline (m-nitroaniline) mg/l - <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 x x x x <0.001 x x x x x x <0.05 x 4-Aminobiphenyl mg/l - <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 x x x x <0.001 x x x x x x <0.02 x 4-Bromophenylphenyl ether mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

83 APPEIX B Las Cruces Foothills Landfill MW-5 Page 4 of 6 Las Cruces Foothills Landfill monitoring well MW-5 baseline standard constituent CAS Number unit GWPS RESULTS FOR MW-5 average deviation date 7/15/03 8/27/03 9/29/03 10/29/03 11/25/03 12/29/03 12/2/04 12/14/05 12/12/06 1/18/08 12/23/08 12/29/09 12/29/10 12/28/11 6/19/12 12/20/12 6/26/13 7/15/03 to 7/15/03 to 12/2/04 12/2/04 4-Chloroaniline (p-chloroanaline) mg/l - <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 x x x x <0.001 x x x x x x <0.02 x 4-Chlorophenylphenyl ether mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x 4-Nitroaniline (p-nitroaniline) mg/l - <0.05 <0.02 <0.02 <0.02 <0.02 <0.02 x x x x <0.001 x x x x x x <0.02 x 5-Nitro-o-toluidine mg/l - x x x x x x x x x x <0.001 x x x x x x x x 7,12-Dimethylbenz (a) anthracene mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Acenaphthene mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Acenaphthylene mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Acetophenone mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x alpha,alpha-dimethylphenethylamine mg/l - <0.01 x x x x x x x x x <0.001 x x x x x x <0.01 x Aniline mg/l - <0.01 x x x x x x x x x <0.001 x x x x x x <0.01 x Anthracene mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Benzidine mg/l - <0.05 x x x x x x x x x <0.001 x x x x x x <0.05 x Benzo (a) anthracene mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x < x x x x x x <0.01 x Benzo (a) pyrene mg/l - <0.005 <0.02 <0.02 <0.02 <0.02 <0.02 x x x x < x x x x x x <0.02 x Benzo (b) fluoranthene mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Benzo (g,h,i) perylene mg/l - <0.005 <0.02 <0.02 <0.02 <0.02 <0.02 x x x x < x x x x x x <0.02 x Benzo (k) fluoranthene mg/l <0.005 < < < < < x x x x < x x x x x x < x Benzoic acid mg/l <0.05 x x x x x x x x x x x x x x x x <0.05 x Benzyl alcohol mg/l - <0.02 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x bis (2-Chloroethoxy) methane mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x bis (2-Chloroethyl) ether mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x bis (2-Chloroisopropyl) ether (bis (2-chloro-1-methylethyl) ether) mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x bis (2-Ethylhexyl) phthalate mg/l - <0.005 <0.02 <0.02 <0.02 <0.02 <0.02 x x x x <0.001 x x x x x x <0.02 x Butylbenzylphthalate mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Carbazole mg/l - <0.005 x x x x x x x x x <0.001 x x x x x x <0.005 x Chlorobenzilate mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Chrysene mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x < x x x x x x <0.01 x Diallate mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Dibenz (a,j) acridine mg/l - <0.01 x x x x x x x x x x x x x x x x <0.01 x Dibenzo (a,h) anthracene mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x < x x x x x x <0.01 x Dibenzofuran mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Diethylene Glycol Monobutyl Ether mg/l - x x x x x x x x x x x x x x x x x x x Diethylphthalate mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Dimethylphthalate mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Di-n-butylphthalate mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Di-n-octylphthalate mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Diphenylamine mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Ethyl methanesulfonate mg/l - <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 x x x x <0.001 x x x x x x <0.02 x Fluoranthene mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Fluorene mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Hexachlorobenzene mg/l - <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 x x x x < x x x x x x <0.001 x Hexachlorocyclopentadiene mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Hexachloroethane mg/l - <0.005 <0.05 <0.05 <0.05 <0.05 <0.05 x x x x <0.001 x x x x x x <0.05 x Hexachloropropene mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x HMX mg/l - x x x x x x x x x x < x x x x x x x x Indeno (1,2,3-cd) pyrene mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x < x x x x x x <0.01 x Isophorone mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Isosafrole mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x m-dinitrobenzene (1,3-DNB) mg/l - x <0.02 <0.02 <0.02 <0.02 <0.02 x x x x < x x x x x x <0.02 x Methapyrilene mg/l - <0.1 <0.02 <0.02 <0.02 <0.02 <0.02 x x x x <0.001 x x x x x x <0.02 x JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

84 APPEIX B Las Cruces Foothills Landfill MW-5 Page 5 of 6 Las Cruces Foothills Landfill monitoring well MW-5 baseline standard constituent CAS Number unit GWPS RESULTS FOR MW-5 average deviation date 7/15/03 8/27/03 9/29/03 10/29/03 11/25/03 12/29/03 12/2/04 12/14/05 12/12/06 1/18/08 12/23/08 12/29/09 12/29/10 12/28/11 6/19/12 12/20/12 6/26/13 7/15/03 to 7/15/03 to 12/2/04 12/2/04 Methyl methanesulfonate mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Naphthalene mg/l 0.03 <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Nitrobenzene mg/l - < <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x n-nitrosodiethylamine mg/l - <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 x x x x <0.001 x x x x x x <0.02 x n-nitrosodimethylamine mg/l - <0.01 <0.002 <0.002 <0.002 <0.002 <0.002 x x x x <0.001 x x x x x x <0.002 x n-nitrosodi-n-butylamine mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x n-nitrosodinpropylamine mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x n-nitrosodiphenylamine mg/l - <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 x x x x <0.001 x x x x x x <0.005 x n-nitrosomethylethylamine mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x n-nitrosopiperidine mg/l - <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 x x x x <0.001 x x x x x x <0.02 x n-nitrosopyrrolidine mg/l - <0.02 <0.04 <0.04 <0.04 <0.04 <0.04 x x x x <0.001 x x x x x x <0.04 x o-toluidine mg/l - <0.01 <0.002 <0.002 <0.002 <0.002 <0.002 x x x x <0.001 x x x x x x <0.002 x p-(dimethylamino) azobenzene mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Pentachlorobenzene mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Pentachloronitrobenzene mg/l - <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 x x x x <0.001 x x x x x x <0.02 x Phenacetin mg/l - <0.02 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Phenanthrene mg/l - <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 x x x x <0.001 x x x x x x <0.001 x p-phenylenediamine mg/l - <0.05 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Pronamide mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Pyrene mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Pyridine mg/l - <0.01 x x x x x x x x x <0.001 x x x x x x <0.01 x RDX mg/l - x x x x x x x x x x < x x x x x x x x Safrole mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x sym-trinitrobenzene 1 (1,3,5-TNB) mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x x x x x x x x <0.01 x Semi Volatile Organic Compounds - Phenolics 2,3,4,6-Tetrachlorophenol mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 x x x x x <0.001 x x x x x x <0.01 x 2,4,5-Trichlorophenol mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 x x x x x <0.001 x x x x x x <0.01 x 2,4,6-Trichlorophenol mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 x x x x x <0.001 x x x x x x <0.01 x 2,4-Dichlorophenol mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 x x x x x <0.001 x x x x x x <0.01 x 2,4-Dimethylphenol mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 x x x x x <0.001 x x x x x x <0.01 x 2,4-Dinitrophenol mg/l - <0.05 <0.05 <0.05 <0.05 <0.05 x x x x x <0.001 x x x x x x <0.05 x 2,6-Dichlorophenol mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 x x x x x <0.001 x x x x x x <0.01 x 2-Chlorophenol mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 x x x x x <0.001 x x x x x x <0.01 x 2-Methylphenol (o-cresol) mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 x x x x x <0.001 x x x x x x <0.01 x 2-Nitrophenol (o-nitrophenol) mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 x x x x x <0.001 x x x x x x <0.01 x 3-Methylphenol/4-Methylphenol (m&p-cresol) / mg/l - <0.005 <0.02 <0.02 <0.02 <0.02 x x x x x <0.001 x x x x x x <0.02 x 4,6-Dinitro-2-methylphenol (4,6-Dinitro-o-cresol) mg/l - <0.05 <0.05 <0.05 <0.05 <0.05 x x x x x <0.001 x x x x x x <0.05 x p-chloro-m-cresol (4-Chloro-3-methylphenol) mg/l - <0.02 <0.005 <0.005 <0.005 <0.005 <0.005 x x x x <0.001 x x x x x x <0.005 x 4-Nitrophenol (p-nitrophenol) mg/l - <0.05 <0.05 <0.05 <0.05 <0.05 x x x x x <0.001 x x x x x x <0.05 x Pentachlorophenol mg/l - <0.02 <0.02 <0.02 <0.02 <0.02 x x x x x <0.001 x x x x x x <0.02 x Phenol 1 (a) mg/l <0.005 <0.01 <0.01 <0.01 <0.01 x x x x x <0.001 x x x x x x <0.01 x Radium 226 and 228 NA pci/l Ra-226, total NA pci/l <2.5 <2.5 <2.5 <2.5 <2.5 x x x x 0.14 x x x x x x <2.5 x Ra-228 1, total NA pci/l <2.5 <2.5 <2.5 <2.5 <2.5 x x x x 0.16 x x x x x x <2.5 x Chlorinated Pesticides 4,4'-DDD (p,p'-ddd) mg/l - < <0.001 <0.001 <0.001 <0.001 <0.001 x x x x < x x x x x x <0.001 x 4,4'-DDE (p,p'-dde) mg/l - < <0.001 <0.001 <0.001 <0.001 <0.001 x x x x < x x x x x x <0.001 x 4,4'-DDT (p,p'-ddt) mg/l - < <0.001 <0.001 <0.001 <0.001 <0.001 x x x x < x x x x x x <0.001 x aldrin mg/l - < <0.01 <0.01 <0.01 <0.01 <0.01 x x x x < x x x x x x <0.01 x alpha-bhc mg/l - < < < < < < x x x x < x x x x x x < x alpha-chlordane mg/l - < alpha + alpha + alpha + alpha + alpha + x x x x x x x x x x x alpha + x JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

85 APPEIX B Las Cruces Foothills Landfill MW-5 Page 6 of 6 Las Cruces Foothills Landfill monitoring well MW-5 baseline standard constituent CAS Number unit GWPS RESULTS FOR MW-5 average deviation date 7/15/03 8/27/03 9/29/03 10/29/03 11/25/03 12/29/03 12/2/04 12/14/05 12/12/06 1/18/08 12/23/08 12/29/09 12/29/10 12/28/11 6/19/12 12/20/12 6/26/13 7/15/03 to 7/15/03 to 12/2/04 12/2/04 beta-bhc mg/l - < < < < < < x x x x < x x x x x x < x Chlordane mg/l x x x x x x x x x x < x x x x x x x x delta-bhc mg/l - < < < < < < x x x x < x x x x x x < x Dieldrin mg/l - < <0.001 <0.001 <0.001 <0.001 <0.001 x x x x < x x x x x x <0.001 x Endosulfan I (alpha-endosulfan) mg/l - < <0.001 <0.001 <0.001 <0.001 <0.001 x x x x < x x x x x x <0.001 x Endosulfan II (beta-endosulfan) mg/l - < <0.001 <0.001 <0.001 <0.001 <0.001 x x x x < x x x x x x <0.001 x Endosulfan sulfate mg/l - < <0.001 <0.001 <0.001 <0.001 <0.001 x x x x < x x x x x x <0.001 x Endrin aldehyde mg/l - < <0.001 <0.001 <0.001 <0.001 <0.001 x x x x < x x x x x x <0.001 x Endrin ketone mg/l - < x x x x x x x x x x x x x x x x < x Endrin mg/l - < <0.001 <0.001 <0.001 <0.001 <0.001 x x x x < x x x x x x <0.001 x gamma-bhc mg/l - < < < < < < x x x x < x x x x x x < x gamma-chlordane mg/l - < see above see above see above see above see above x x x x x x x x x x x see above x Heptachlor epoxide mg/l - < <0.001 <0.001 <0.001 <0.001 <0.001 x x x x < x x x x x x <0.001 x Heptachlor mg/l - < <0.001 <0.001 <0.001 <0.001 <0.001 x x x x < x x x x x x <0.001 x Isodrin mg/l - <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 x x x x <0.001 x x x x x x <0.02 x Kepone mg/l - <0.025 <0.02 <0.02 <0.02 <0.02 <0.02 x x x x <0.001 x x x x x x <0.02 x Methoxychlor mg/l - <0.001 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x < x x x x x x <0.01 x Toxaphene mg/l - <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 x x x x <0.001 x x x x x x <0.001 x Polychlorinated Biphenyls (PCBs) Arochlor mg/l - < < < < < < x x x x < x x x x x x < x Arochlor mg/l - < < < < < < x x x x < x x x x x x < x Arochlor mg/l - < < < < < < x x x x < x x x x x x < x Arochlor mg/l - < < < < < < x x x x < x x x x x x < x Arochlor mg/l - < < < < < < x x x x < x x x x x x < x Arochlor mg/l - < < < < < < x x x x < x x x x x x < x Arochlor mg/l - < < < < < < x x x x < x x x x x x < x Other Pesticides and Herbicides 1 2,3,7,8-TCDD ng/l 0.03 x x x x x x x x x x < x x x x x x x x 2,4,5-T mg/l - <0.001 <0.002 <0.002 <0.002 <0.002 <0.002 x x x x < x x x x x x <0.002 x 2,4-Dichlorophenoxyacetic acid (2,4-D) mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x < x x x x x x <0.01 x Dimethoate mg/l - < <0.02 <0.02 <0.02 <0.02 <0.02 x x x x <0.001 x x x x x x <0.02 x Dinoseb mg/l - <0.005 <0.02 <0.02 <0.02 <0.02 <0.02 x x x x < x x x x x x <0.02 x Disulfoton mg/l - < <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Famphur mg/l - < <0.02 <0.02 <0.02 <0.02 <0.02 x x x x <0.001 x x x x x x <0.02 x Methyl parathion mg/l - < <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x o,o,o-triethyl phosphorothioate mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Parathion (Ethyl) mg/l - < <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Phorate mg/l - < <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Silvex 1 (2,4,5-TP) mg/l - <0.001 <0.002 <0.002 <0.002 <0.002 <0.002 x x x x < x x x x x x <0.002 x o,o-diethyl o-2pyrazinyl phosphorothioate (Thionazin) mg/l - x <0.02 <0.02 <0.02 <0.02 <0.02 x x x x <0.001 x x x x x x <0.02 x * baseline averages and standard deviations are based on 1999 and 2000 data only as per requirements in Environmental Protection, subpart 803. Ground Water Sampling and Analysis, hazardous x parameter not analyzed (^^) See section entitled 'Polychlorinated Biphenyls (PCBs)' for break-out of PCB concentrations. (#) Scanned for and not detected, breaks down almost immediately in water. JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

86 JSAI MW-6 JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

87 APPEIX B Page 1 of 6 Las Cruces Foothills Landfill MW-6 Las Cruces Foothills Landfill monitoring well MW-6 baseline standard constituent CAS Number unit GWPS RESULTS FOR MW-6 average deviation date 7/15/03 8/27/03 9/29/03 10/27/03 11/25/03 12/29/03 12/2/04 12/14/05 12/12/06 1/18/08 12/23/08 12/29/09 12/29/10 12/28/11 6/19/12 12/20/12 6/26/13 7/15/03 to 7/15/03 to 12/2/04 12/2/04 Field Parameters water level elevation ft amsl , conductivity µs/cm - pumped dry ph ph units temperature deg F - pumped dry Major Ions calcium mg/l chloride mg/l fluoride mg/l x x x x 0.56 x 0.55 x x x x magnesium mg/l potassium mg/l sodium mg/l sulfate mg/l alkalinity NA mg/l bicarbonate alkalinity mg/l carbonate alkalinity mg/l - <20 <2.0 <2.0 <2.0 <2.0 <2.0 <4.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 x total dissolved solids NA mg/l 1, Nitrogen Species ammonia as N mg/l - <0.1 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.50 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <0.5 x Kjeldahl nitrogen mg/l - 2 <1.0 <1.0 <1.0 <1.0 <1.0 x x x x <1.0 x x x x x x 2.00 x nitrate as N mg/l nitrite mg/l - < x x x x x x x x x x x total nitrogen - mg/l - x x x x x x x x x x 2.5 x x x x x x x x Metals aluminum mg/l <3.0 <3.0 <3.0 <3.0 <3.0 <3.0 x x x <0.02 x <0.020 x x x x 0.09 x antimony mg/l < <0.003 <0.003 <0.003 <0.003 <0.003 x x x x <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.003 x arsenic mg/l <0.01 <0.01 <0.01 <0.01 <0.01 x x x x x barium mg/l x x x x beryllium mg/l < <0.002 <0.002 <0.002 <0.002 <0.002 x x x x <0.003 x < <0.002 <0.002 <0.002 <0.002 x boron mg/l 0.75 <0.1 <0.5 <0.5 <0.5 <0.5 <0.5 x x x x <0.04 x <0.04 x x x x <0.5 x cadmium mg/l < <0.002 <0.002 <0.002 <0.002 <0.002 x x x x <0.002 < <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 x chromium mg/l <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.006 < <0.006 <0.006 <0.006 <0.006 < x cobalt mg/l <0.03 <0.03 <0.03 <0.03 <0.03 x x x x <0.006 < < <0.006 <0.006 < x copper mg/l <0.06 <0.06 <0.06 <0.06 <0.06 x x x x < <0.006 <0.006 <0.006 <0.006 < x iron mg/l <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.05 <0.05 < <0.02 <0.02 < x lead mg/l 0.05 < <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.01 x manganese mg/l <0.03 <0.03 <0.03 <0.03 <0.03 <0.03 <0.03 <0.03 < x mercury mg/l < <0.001 <0.001 <0.001 <0.001 <0.001 x x x x < x < x x x x <0.001 x molybdenum mg/l 1.0 <0.010 <0.75 <0.75 <0.75 <0.75 <0.75 x x x x <0.008 x <0.008 x x x x <0.75 x nickel mg/l <0.05 <0.05 <0.05 <0.05 <0.05 x x x x <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 < x selenium mg/l <0.005 <0.005 <0.005 <0.005 <0.005 x x x x <0.001 < < x silver mg/l 0.05 <0.010 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.01 x thallium mg/l < <0.001 <0.001 <0.001 <0.001 <0.001 x x x x <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x tin mg/l - <0.10 x x x x <0.4 x x x x <0.1 x x x x x x <0.4 x uranium mg/l 0.03 <0.002 <2.5 <2.5 <2.5 <2.5 <2.5 x x x x x x x x x x <2.5 x vanadium mg/l - <0.050 <0.08 <0.08 <0.08 <0.08 <0.08 x x x x <0.05 <0.05 < <0.05 <0.05 <0.05 <0.08 x zinc mg/l <0.05 <0.05 <0.05 <0.05 <0.05 x x x x <0.02 <0.02 < <0.01 <0.01 < x total organic carbon - mg/l - <0.5 <1.0 <1.0 <1.0 <0.5 <0.5 <0.5 < < <1.0 < <0.5 x phosphate mg/l - x x x x x x x x x x <0.50 x <0.50 x x x x x x sulfide mg/l - <0.1 x x x x <4.0 x x x x 3 x x x x x x <4.0 x JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

88 APPEIX B Page 2 of 6 Las Cruces Foothills Landfill MW-6 Las Cruces Foothills Landfill monitoring well MW-6 baseline standard constituent CAS Number unit GWPS RESULTS FOR MW-6 average deviation date 7/15/03 8/27/03 9/29/03 10/27/03 11/25/03 12/29/03 12/2/04 12/14/05 12/12/06 1/18/08 12/23/08 12/29/09 12/29/10 12/28/11 6/19/12 12/20/12 6/26/13 7/15/03 to 7/15/03 to 12/2/04 12/2/04 cyanide mg/l 0.2 <0.01 <0.1 <0.1 <0.1 <0.1 <0.1 x x x x <0.005 x x x x x x <0.1 x perchlorate mg/l - x x x x x x x x x x <0.001 x x x x x x x x total phenolics 1 - mg/l <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 < < < < < < < < x Polychlorinated Biphenyls (PCBs) mg/l (^^) (^^) (^^) (^^) (^^) (^^) x x x x (^^) x x x x x x (^^) x Volatile Organic Compounds 1,1,1,2-Tetrachloroethane mg/l 0.02 < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.005 x 1,1,1-Trichloroethane mg/l 0.06 < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.005 x 1,1,2,2-Tetrachloroethane mg/l 0.01 < <0.001 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.005 x 1,1,2-Trichloroethane mg/l < <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.002 x 1,1-Dichloroethane mg/l < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.005 x 1,1-Dichloroethylene (1,1-Dichloroethene; 1,1-DCE) mg/l < <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x 1,1-Dichloropropene mg/l - < <0.005 <0.005 <0.005 <0.005 <0.005 x x x x <0.005 x x x x x x <0.005 x 1,2 Dibromo-3-chloropropane (DBCP) mg/l <0.010 < < < < < < < < < < < < < < < < < x 1,2,3-Trichlorobenzene mg/l - < x x x x x x x x x x x x x x x x < x 1,2,3-Trichloropropane mg/l 0.01 < <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 x 1,2,4-Trichlorobenzene mg/l - < <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x 1,2-Dichlorobenzene (o-dichlorobenzene) mg/l 0.6 < <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 x 1,2-Dichloroethane (EDC) mg/l < <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x 1,2-Dichloropropane mg/l < < < < < < < < < < < < < < < < < < x 1,3-Dichlorobenzene (m-dichlorobenzene) mg/l - < <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 <0.001 x x x x x <0.01 x 1,3-Dichloropropane mg/l - < <0.005 <0.01 <0.01 <0.01 <0.01 x x x x <0.01 x x x x x x <0.01 x 1,4-Dichlorobenzene (p-dichlorobenzene) mg/l < <0.015 <0.015 <0.015 <0.015 <0.015 <0.015 <0.015 <0.015 <0.015 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.015 x 2,2-Dichloropropane mg/l - < < <0.015 <0.015 <0.015 <0.015 x x x x <0.015 x x x x x x <0.015 x 2-Butanone (Methyl Ethyl Ketone) (MEK) mg/l - <0.025 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x 2-Chlorotoluene mg/l - < x x x x x x x x x x x x x x x x < x 2-Hexanone (Butyl Ketone) mg/l 0.02 <0.025 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.05 x 4-Chlorotoluene mg/l - < x x x x x x x x x x x x x x x x < x 4-Methyl-2-pentanone mg/l - <0.025 <0.015 <0.015 <0.015 <0.015 <0.015 <0.015 <0.015 <0.015 <0.015 <0.015 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.015 x Acetone mg/l - <0.025 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.1 x Acetonitrile mg/l - <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 x x x x <0.1 x x x x x x <0.1 x Acrolein mg/l - <0.025 <0.1 <0.1 <0.1 <0.1 <0.1 x x x x <0.1 x x x x x x <0.1 x Acrylonitrile mg/l - <0.025 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.2 x Allyl chloride mg/l - x <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.01 x x x x x x <0.01 x Benzene mg/l < <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Bis(chloromethyl) ether mg/l - x x x x x x x x x x (#) x x x x x x x x Bromochloromethane mg/l - <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 < <0.002 <0.002 <0.002 <0.002 x Bromomethane (methyl bromide) mg/l - <0.001 <0.01 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.02 x Carbon Disulfide mg/l - <0.005 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.1 x Carbon Tetrachloride mg/l < <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.002 x Chlorobenzene mg/l 0.1 < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.005 x Chloroethane mg/l - < <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.01 x Chloromethane (methyl chloride) mg/l 0.02 < <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Chloroprene (2-Chloro-1,3-butadiene) mg/l - <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 x x x x x x x x x x x <0.05 x cis-1,2-dichloroethylene (cis-1,2-dichloroethene) mg/l <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 < <0.001 <0.001 <0.001 <0.005 x cis-1,3-dichloropropene mg/l - < <0.001 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.02 x Dibromomethane (methylene bromide) mg/l - < <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.02 x Dichlorodifluoromethane mg/l < x <0.005 < Ethyl methacrylate mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.01 x x x x x x <0.01 x Ethylbenzene mg/l 0.75 < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.005 x Ethylene Dibromide (1,2-Dibromoethane) (EDB) mg/l < < < < < < < < < < < < < < < < < < x Hexachlorobutadiene mg/l - < <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

89 APPEIX B Page 3 of 6 Las Cruces Foothills Landfill MW-6 Las Cruces Foothills Landfill monitoring well MW-6 baseline standard constituent CAS Number unit GWPS RESULTS FOR MW-6 average deviation date 7/15/03 8/27/03 9/29/03 10/27/03 11/25/03 12/29/03 12/2/04 12/14/05 12/12/06 1/18/08 12/23/08 12/29/09 12/29/10 12/28/11 6/19/12 12/20/12 6/26/13 7/15/03 to 7/15/03 to 12/2/04 12/2/04 Isobutyl alcohol mg/l - <0.1 <0.05 <0.05 <0.05 <0.05 <0.05 x x x x <0.05 x x x x x x <0.05 x Isopropylbenzene mg/l - < x x x x x x x x x x x x x x x x < x Methacrylonitrile mg/l - <0.025 <0.005 <0.005 <0.005 <0.005 <0.005 x x x x <0.005 x x x x x x <0.005 x Methyl Iodide (Iodomethane) mg/l - <0.005 <0.04 <0.04 <0.04 <0.04 <0.04 <0.04 <0.04 <0.04 <0.04 <0.04 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.04 x Methyl methacrylate mg/l - <0.03 <0.03 <0.03 <0.03 <0.03 <0.03 x x x x <0.03 x x x x x x <0.03 x Methylene Chloride mg/l < <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x n-butylbenzene mg/l - < x x x x x x x x x x x x x x x x < x Propionitrile mg/l - <0.06 <0.06 <0.06 <0.06 <0.06 <0.06 x x x x <0.06 x x x x x x <0.06 x Propylbenzene mg/l - < x x x x x x x x x x x x x x x x < x sec-butylbenzene mg/l - < x x x x x x x x x x x x x x x x < x Styrene mg/l 0.1 < <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 x tert-butyl methyl ether (MTBE) (a) mg/l 0.1 <0.005 x x x x x x x x x <0.001 x x x x x x <0.005 x tert-butylbenzene mg/l - < x x x x x x x x x x x x x x x x < x Tetrachloroethene (PCE) mg/l Tetrahydrofuran (THF) mg/l - <0.010 x x x x x x x x x x x x x x x x <0.010 x Toluene mg/l <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 < <0.001 <0.001 <0.001 <0.005 x Total Xylenes (m&p and o) 1 NA mg/l 0.62 <0.001 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.002 < <0.002 <0.002 <0.002 <0.005 x trans-1,2-dichloroethene mg/l 0.1 < <0.005 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.002 x trans-1,3-dichloropropene mg/l - <0.001 <0.001 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 x trans-1,4-dichloro-2-butene mg/l - <0.010 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.1 x Trichloroethene (TCE) mg/l <0.001 <0.001 <0.001 <0.001 <0.001 < <0.001 <0.001 <0.001 < <0.001 <0.001 <0.001 <0.001 x Trichlorofluoromethane mg/l - <0.001 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.001 < <0.001 <0.001 <0.001 <0.01 x Vinyl acetate mg/l - <0.025 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.05 x Vinyl chloride mg/l < < < < < < < < < < < < < < < < < < x Trihalomethanes (THM) Bromodichloromethane mg/l - < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.005 x Bromoform mg/l 0.1 <0.001 <0.001 <0.015 <0.015 <0.015 <0.015 <0.015 <0.015 <0.015 <0.015 <0.015 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.015 x Chloroform mg/l 0.1 < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.005 x Dibromochloromethane mg/l - < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.005 x Semi Volatile Organic Compounds 1,2,4,5-Tetrachlorobenzene mg/l - <0.010 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x 1,2-Diphenylhydrazine mg/l - <0.005 x x x x x x x x x <0.001 x x x x x x <0.005 x 1,4-Naphthoquinone mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x 1-Chloronaphthalene NA mg/l - <0.005 x x x x x x x x x x x x x x x x <0.005 x 1-Methylnaphthalene mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x 1-Naphthylamine mg/l - <0.010 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x 2,4,6-Trinitrotoluene (TNT) mg/l - x x x x x x x x x x < x x x x x x x x 2,4-Dinitrotoluene (2,4-DNT) mg/l - <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 x x x x <0.001 x x x x x x <0.005 x 2,6-Dinitrotoluene 1 (2,6-DNT) mg/l - <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 x x x x <0.001 x x x x x x <0.005 x 2-Acetylaminofluorene mg/l - <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 x x x x <0.001 x x x x x x <0.02 x 2-Chloronaphthalene mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x 2-Methylnaphthalene mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x 2-Naphthylamine mg/l - <0.010 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x 2-Nitroaniline (o-nitroaniline) mg/l - <0.050 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x 2-Picoline mg/l - <0.010 x x x x x x x x x <0.001 x x x x x x <0.01 x 3,3'-Dichlorobenzidine mg/l - <0.050 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x 3,3'-Dimethylbenzidine mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x 3-Methylcholanthrene mg/l - <0.010 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x 3-Nitroaniline (m-nitroaniline) mg/l - <0.050 <0.05 <0.05 <0.05 <0.05 <0.05 x x x x <0.001 x x x x x x <0.05 x 4-Aminobiphenyl mg/l - <0.020 <0.02 <0.02 <0.02 <0.02 <0.02 x x x x <0.001 x x x x x x <0.02 x 4-Bromophenylphenyl ether mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

90 APPEIX B Page 4 of 6 Las Cruces Foothills Landfill MW-6 Las Cruces Foothills Landfill monitoring well MW-6 baseline standard constituent CAS Number unit GWPS RESULTS FOR MW-6 average deviation date 7/15/03 8/27/03 9/29/03 10/27/03 11/25/03 12/29/03 12/2/04 12/14/05 12/12/06 1/18/08 12/23/08 12/29/09 12/29/10 12/28/11 6/19/12 12/20/12 6/26/13 7/15/03 to 7/15/03 to 12/2/04 12/2/04 4-Chloroaniline (p-chloroanaline) mg/l - <0.020 <0.02 <0.02 <0.02 <0.02 <0.02 x x x x <0.001 x x x x x x <0.02 x 4-Chlorophenylphenyl ether mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x 4-Nitroaniline (p-nitroaniline) mg/l - <0.050 <0.02 <0.02 <0.02 <0.02 <0.02 x x x x <0.001 x x x x x x <0.02 x 5-Nitro-o-toluidine mg/l - x x x x x x x x x x <0.001 x x x x x x x x 7,12-Dimethylbenz (a) anthracene mg/l - <0.010 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Acenaphthene mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Acenaphthylene mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Acetophenone mg/l - <0.010 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x alpha,alpha-dimethylphenethylamine mg/l - <0.010 x x x x x x x x x <0.001 x x x x x x <0.01 x Aniline mg/l - <0.010 x x x x x x x x x <0.001 x x x x x x <0.01 x Anthracene mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Benzidine mg/l - <0.050 x x x x x x x x x <0.001 x x x x x x <0.05 x Benzo (a) anthracene mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x < x x x x x x <0.01 x Benzo (a) pyrene mg/l - <0.005 <0.02 <0.02 <0.02 <0.02 <0.02 x x x x < x x x x x x <0.02 x Benzo (b) fluoranthene mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Benzo (g,h,i) perylene mg/l - <0.005 <0.02 <0.02 <0.02 <0.02 <0.02 x x x x < x x x x x x <0.02 x Benzo (k) fluoranthene mg/l <0.005 < < < < < x x x x < x x x x x x < x Benzoic acid mg/l <0.050 x x x x x x x x x x x x x x x x <0.05 x Benzyl alcohol mg/l - <0.020 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x bis (2-Chloroethoxy) methane mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x bis (2-Chloroethyl) ether mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x bis (2-Chloroisopropyl) ether (bis (2-chloro-1-methylethyl) ether) mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x bis (2-Ethylhexyl) phthalate mg/l - <0.005 <0.02 <0.02 <0.02 <0.02 <0.02 x x x x <0.001 x x x x x x <0.02 x Butylbenzylphthalate mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Carbazole mg/l - <0.005 x x x x x x x x x <0.001 x x x x x x <0.005 x Chlorobenzilate mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Chrysene mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x < x x x x x x <0.01 x Diallate mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Dibenz (a,j) acridine mg/l - <0.010 x x x x x x x x x x x x x x x x <0.01 x Dibenzo (a,h) anthracene mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x < x x x x x x <0.01 x Dibenzofuran mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Diethylene Glycol Monobutyl Ether mg/l - x x x x x x x x x x x x x x x x x x x Diethylphthalate mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Dimethylphthalate mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Di-n-butylphthalate mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Di-n-octylphthalate mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Diphenylamine mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Ethyl methanesulfonate mg/l - <0.020 <0.02 <0.02 <0.02 <0.02 <0.02 x x x x <0.001 x x x x x x <0.02 x Fluoranthene mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Fluorene mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Hexachlorobenzene mg/l - <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 x x x x < x x x x x x <0.001 x Hexachlorocyclopentadiene mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Hexachloroethane mg/l - <0.005 <0.05 <0.05 <0.05 <0.05 <0.05 x x x x <0.001 x x x x x x <0.05 x Hexachloropropene mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x HMX mg/l - x x x x x x x x x x < x x x x x x x x Indeno (1,2,3-cd) pyrene mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x < x x x x x x <0.01 x Isophorone mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Isosafrole mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x m-dinitrobenzene (1,3-DNB) mg/l - <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 x x x x x x x x x x x <0.02 x Methapyrilene mg/l - <0.1 <0.02 <0.02 <0.02 <0.02 <0.02 x x x x <0.001 x x x x x x <0.02 x Methyl methanesulfonate mg/l - <0.010 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

91 APPEIX B Page 5 of 6 Las Cruces Foothills Landfill MW-6 Las Cruces Foothills Landfill monitoring well MW-6 baseline standard constituent CAS Number unit GWPS RESULTS FOR MW-6 average deviation date 7/15/03 8/27/03 9/29/03 10/27/03 11/25/03 12/29/03 12/2/04 12/14/05 12/12/06 1/18/08 12/23/08 12/29/09 12/29/10 12/28/11 6/19/12 12/20/12 6/26/13 7/15/03 to 7/15/03 to 12/2/04 12/2/04 Naphthalene mg/l 0.03 <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Nitrobenzene mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x n-nitrosodiethylamine mg/l - <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 x x x x <0.001 x x x x x x <0.02 x n-nitrosodimethylamine mg/l - <0.010 <0.002 <0.002 <0.002 <0.002 <0.002 x x x x <0.001 x x x x x x <0.002 x n-nitrosodi-n-butylamine mg/l - <0.010 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x n-nitrosodinpropylamine mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x n-nitrosodiphenylamine mg/l - <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 x x x x <0.001 x x x x x x <0.005 x n-nitrosomethylethylamine mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x n-nitrosopiperidine mg/l - <0.020 <0.02 <0.02 <0.02 <0.02 <0.02 x x x x <0.001 x x x x x x <0.02 x n-nitrosopyrrolidine mg/l - <0.02 <0.04 <0.04 <0.04 <0.04 <0.04 x x x x <0.001 x x x x x x <0.04 x o-toluidine mg/l - <0.01 <0.002 <0.002 <0.002 <0.002 <0.002 x x x x <0.001 x x x x x x <0.002 x p-(dimethylamino) azobenzene mg/l - <0.010 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Pentachlorobenzene mg/l - <0.010 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Pentachloronitrobenzene mg/l - <0.020 <0.02 <0.02 <0.02 <0.02 <0.02 x x x x <0.001 x x x x x x <0.02 x Phenacetin mg/l - <0.020 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Phenanthrene mg/l - <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 x x x x <0.001 x x x x x x <0.001 x p-phenylenediamine mg/l - <0.05 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Pronamide mg/l - <0.010 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Pyrene mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Pyridine mg/l - <0.010 x x x x x x x x x <0.001 x x x x x x <0.01 x RDX mg/l - x x x x x x x x x x < x x x x x x x x Safrole mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x sym-trinitrobenzene 1 (1,3,5-TNB) mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x x x x x x x x <0.01 x Semi Volatile Organic Compounds - Phenolics 2,3,4,6-Tetrachlorophenol mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 x x x x x <0.001 x x x x x x <0.01 x 2,4,5-Trichlorophenol mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 x x x x x <0.001 x x x x x x <0.01 x 2,4,6-Trichlorophenol mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 x x x x x <0.001 x x x x x x <0.01 x 2,4-Dichlorophenol mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 x x x x x <0.001 x x x x x x <0.01 x 2,4-Dimethylphenol mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 x x x x x <0.001 x x x x x x <0.01 x 2,4-Dinitrophenol mg/l - <0.05 <0.05 <0.05 <0.05 <0.05 x x x x x <0.001 x x x x x x <0.05 x 2,6-Dichlorophenol mg/l - <0.010 <0.01 <0.01 <0.01 <0.01 x x x x x <0.001 x x x x x x <0.01 x 2-Chlorophenol mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 x x x x x <0.001 x x x x x x <0.01 x 2-Methylphenol (o-cresol) mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 x x x x x <0.001 x x x x x x <0.01 x 2-Nitrophenol (o-nitrophenol) mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 x x x x x <0.001 x x x x x x <0.01 x 3-Methylphenol/4-Methylphenol (m&p-cresol) / mg/l - x <0.02 <0.02 <0.02 <0.02 x x x x x <0.001 x x x x x x <0.02 x 4,6-Dinitro-2-methylphenol (4,6-Dinitro-o-cresol) mg/l - <0.05 <0.05 <0.05 <0.05 <0.05 x x x x x <0.001 x x x x x x <0.05 x p-chloro-m-cresol (4-Chloro-3-methylphenol) mg/l - <0.020 <0.005 <0.005 <0.005 <0.005 <0.005 x x x x <0.001 x x x x x x <0.005 x 4-Nitrophenol (p-nitrophenol) mg/l - <0.05 <0.05 <0.05 <0.05 <0.05 x x x x x <0.001 x x x x x x <0.05 x Pentachlorophenol mg/l - <0.02 <0.02 <0.02 <0.02 <0.02 x x x x x <0.001 x x x x x x <0.02 x Phenol 1 (a) mg/l <0.005 <0.01 <0.01 <0.01 <0.01 x x x x x <0.001 x x x x x x <0.01 x Radium 226 and 228 NA pci/l Ra-226, total NA pci/l <2.5 <2.5 <2.5 <2.5 <2.5 x x x x 0.2 x x x x x x <2.5 x Ra-228 1, total NA pci/l - <0.5 <2.5 <2.5 <2.5 <2.5 <2.5 x x x x 0.25 x x x x x x <2.5 x Chlorinated Pesticides 4,4'-DDD (p,p'-ddd) mg/l - < <0.001 <0.001 <0.001 <0.001 <0.001 x x x x < x x x x x x <0.001 x 4,4'-DDE (p,p'-dde) mg/l - < <0.001 <0.001 <0.001 <0.001 <0.001 x x x x < x x x x x x <0.001 x 4,4'-DDT (p,p'-ddt) mg/l - < <0.001 <0.001 <0.001 <0.001 <0.001 x x x x < x x x x x x <0.001 x aldrin mg/l - < <0.01 <0.0.1 <0.0.1 <0.0.1 <0.0.1 x x x x < x x x x x x <0.0.1 x alpha-bhc mg/l - < < < < < < x x x x < x x x x x x < x alpha-chlordane mg/l - < alpha + alpha + alpha + alpha + alpha + x x x x x x x x x x x alpha + x beta-bhc mg/l - < < < < < < x x x x < x x x x x x < x JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

92 APPEIX B Page 6 of 6 Las Cruces Foothills Landfill MW-6 Las Cruces Foothills Landfill monitoring well MW-6 baseline standard constituent CAS Number unit GWPS RESULTS FOR MW-6 average deviation date 7/15/03 8/27/03 9/29/03 10/27/03 11/25/03 12/29/03 12/2/04 12/14/05 12/12/06 1/18/08 12/23/08 12/29/09 12/29/10 12/28/11 6/19/12 12/20/12 6/26/13 7/15/03 to 7/15/03 to 12/2/04 12/2/04 Chlordane mg/l x x x x x x x x x x < x x x x x x x x delta-bhc mg/l - < < < < < < x x x x < x x x x x x < x Dieldrin mg/l - < <0.001 <0.001 <0.001 <0.001 <0.001 x x x x < x x x x x x <0.001 x Endosulfan I (alpha-endosulfan) mg/l - < <0.001 <0.001 <0.001 <0.001 <0.001 x x x x < x x x x x x <0.001 x Endosulfan II (beta-endosulfan) mg/l - < <0.001 <0.001 <0.001 <0.001 <0.001 x x x x < x x x x x x <0.001 x Endosulfan sulfate mg/l - < <0.001 <0.001 <0.001 <0.001 <0.001 x x x x < x x x x x x <0.001 x Endrin aldehyde mg/l - < <0.001 <0.001 <0.001 <0.001 <0.001 x x x x < x x x x x x <0.001 x Endrin ketone mg/l - < x x x x x x x x x x x x x x x x < x Endrin mg/l - < <0.001 <0.001 <0.001 <0.001 <0.001 x x x x < x x x x x x <0.001 x gamma-bhc mg/l - < < < < < < x x x x < x x x x x x < x gamma-chlordane mg/l - < see above see above see above see above see above x x x x x x x x x x x see above x Heptachlor epoxide mg/l - < <0.001 <0.001 <0.001 <0.001 <0.001 x x x x < x x x x x x <0.001 x Heptachlor mg/l - < <0.001 <0.001 <0.001 <0.001 <0.001 x x x x < x x x x x x <0.001 x Isodrin mg/l - <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 x x x x <0.001 x x x x x x <0.02 x Kepone mg/l - <0.025 <0.02 <0.02 <0.02 <0.02 <0.02 x x x x <0.001 x x x x x x <0.02 x Methoxychlor mg/l - <0.001 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x < x x x x x x <0.01 x Toxaphene mg/l - <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 x x x x <0.001 x x x x x x <0.001 x Polychlorinated Biphenyls (PCBs) Arochlor mg/l - < < < < < < x x x x < x x x x x x < x Arochlor mg/l - < < < < < < x x x x < x x x x x x < x Arochlor mg/l - < < < < < < x x x x < x x x x x x < x Arochlor mg/l - < < < < < < x x x x < x x x x x x < x Arochlor mg/l - < < < < < < x x x x < x x x x x x < x Arochlor mg/l - < < < < < < x x x x < x x x x x x < x Arochlor mg/l - < < < < < < x x x x < x x x x x x < x Other Pesticides and Herbicides 1 2,3,7,8-TCDD ng/l 0.03 x x x x x x <1.30 x x x < x x x x x x x x 2,4,5-T mg/l - <0.001 <0.002 <0.002 <0.002 <0.002 <0.002 x x x x < x x x x x x <0.002 x 2,4-Dichlorophenoxyacetic acid (2,4-D) mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x < x x x x x x <0.01 x Dimethoate mg/l - < <0.02 <0.02 <0.02 <0.02 <0.02 x x x x <0.001 x x x x x x <0.02 x Dinoseb mg/l - <0.005 <0.02 <0.02 <0.02 <0.02 <0.02 x x x x < x x x x x x <0.02 x Disulfoton mg/l - < <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Famphur mg/l - < <0.02 <0.02 <0.02 <0.02 <0.02 x x x x <0.001 x x x x x x <0.02 x Methyl parathion mg/l - < <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x o,o,o-triethyl phosphorothioate mg/l - <0.010 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Parathion (Ethyl) mg/l - < <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Phorate mg/l - < <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x <0.01 x Silvex 1 (2,4,5-TP) mg/l - <0.001 <0.002 <0.002 <0.002 <0.002 <0.002 x x x x < x x x x x x <0.002 x o,o-diethyl o-2pyrazinyl phosphorothioate (Thionazin) mg/l - x <0.02 <0.02 <0.02 <0.02 <0.02 x x x x <0.001 x x x x x x <0.02 x * baseline averages and standard deviations are based on 1999 and 2000 data only as per requirements in Environmental Protection, subpart 803. Ground Water Sampling and Analysis, hazardous x parameter not analyzed (^^) See section entitled 'Polychlorinated Biphenyls (PCBs)' for break-out of PCB concentrations. (#) Scanned for and not detected, breaks down almost immediately in water. JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

93 JSAI MW-7 JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

94 APPEIX B Page 1 of 6 Las Cruces Foothills Landfill MW-7 Las Cruces Foothills Landfill monitoring well MW-7 baseline standard constituent CAS Number unit GWPS RESULTS FOR MW-7 average deviation date 7/15/03 8/27/03 9/29/03 10/27/03 11/25/03 12/29/03 12/2/04 12/14/05 12/12/06 1/18/08 12/23/08 12/29/09 12/29/10 12/28/11 6/19/12 12/19/12 6/26/13 12/19/13 7/15/03 to 7/15/03 to 12/2/04 12/2/04 Field Parameters water level elevation ft amsl , conductivity µs/cm ph ph units temperature deg F Major Ions calcium mg/l chloride mg/l fluoride mg/l x x x x 0.69 x 0.65 x x x x x 0.76 <0.001 magnesium mg/l potassium mg/l sodium mg/l sulfate mg/l alkalinity NA mg/l bicarbonate alkalinity mg/l carbonate alkalinity mg/l - <20 <2.0 <2.0 <2.0 <2.0 <2.0 <4.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 x total dissolved solids NA mg/l 1, Nitrogen Species ammonia as N mg/l - <0.1 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.50 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <0.5 x Kjeldahl nitrogen mg/l - <1 <1.0 <1.0 <1.0 <1.0 <1.0 x x x x <1.0 x x x x x x x <1.0 x nitrate as N mg/l <1.0 <1.0 <1.0 <1.0 < < <1.0 <1.0 x nitrite mg/l - <0.1 <1.0 <1.0 <1.0 <1.0 <1.0 x x x x x x x x x x x x <1.0 x total nitrogen - mg/l - x x x x x x x x x x 1.1 x x x x x x x x x Metals aluminum mg/l <3.0 <3.0 <3.0 <3.0 <3.0 <3.0 x x x <0.02 x 0.04 x x x x x <3.0 x antimony mg/l < <0.003 <0.003 <0.003 <0.003 <0.003 x x x x <0.001 <0.001 < < < <0.001 <0.001 <0.003 x arsenic mg/l <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.002 < < < <0.001 <0.01 x barium mg/l < x x x x beryllium mg/l <0.002 <0.002 <0.002 <0.002 <0.002 x x x x <0.003 x < <0.002 <0.002 <0.002 <0.002 <0.002 x boron mg/l 0.75 <0.1 <0.5 <0.5 <0.5 <0.5 <0.5 x x x x <0.04 x <0.04 x x x x x <0.5 x cadmium mg/l < <0.002 <0.002 <0.002 <0.002 <0.002 x x x x <0.002 < <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 x chromium mg/l <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.006 < < <0.006 <0.006 <0.006 <0.006 <0.01 x cobalt mg/l <0.03 <0.03 <0.03 <0.03 <0.03 x x x x <0.006 < < <0.006 <0.006 <0.006 <0.006 <0.03 x copper mg/l <0.06 <0.06 <0.06 <0.06 <0.06 x x x x <0.006 <0.006 <0.006 <0.006 <0.006 <0.06 x iron mg/l <0.1 <0.1 <0.1 < <0.1 <0.1 <0.1 < <0.02 < lead mg/l 0.05 < <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.005 < <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.01 x manganese mg/l <0.03 <0.03 <0.03 <0.03 <0.03 <0.03 <0.03 <0.03 < <0.03 x mercury mg/l <0.001 <0.001 <0.001 <0.001 <0.001 x x x x < x < x x x x x <0.001 x molybdenum mg/l 1.0 <0.010 <0.75 <0.75 <0.75 <0.75 <0.75 x x x x <0.008 x <0.008 x x x x x <0.75 x nickel mg/l <0.05 <0.05 <0.05 <0.05 <0.05 x x x x < < <0.01 <0.01 <0.01 <0.01 <0.05 x selenium mg/l <0.005 <0.005 <0.005 <0.005 <0.005 x x x x < < < <0.005 x silver mg/l 0.05 <0.010 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.005 < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.01 x thallium mg/l < <0.001 <0.001 <0.001 <0.001 <0.001 x x x x <0.001 <0.001 <0.001 <0.001 < < <0.001 <0.001 <0.001 x tin mg/l - <0.10 x x x x <0.4 x x x x <0.1 x x x x x x x <0.4 x uranium mg/l <2.5 <2.5 <2.5 <2.5 <2.5 x x x x x x x x x x x <2.5 x vanadium mg/l - <0.050 <0.08 <0.08 <0.08 <0.08 <0.08 x x x x <0.05 <0.050 < <0.05 <0.05 <0.05 <0.05 <0.08 x zinc mg/l <0.05 <0.05 <0.05 <0.05 <0.05 x x x x <0.02 <0.020 < <0.01 <0.01 <0.01 <0.01 <0.05 x total organic carbon - mg/l <1.0 <1.0 < < <0.5 <0.5 <1.0 <1.0 <1.0 < <1.0 <1.0 <1.0 < phosphate mg/l - x x x x x x x x x x <0.50 x <0.50 x x x x x x x sulfide mg/l - <0.1 x x x x <4.0 x x x x 2 x x x x x x x <4.0 x JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

95 APPEIX B Page 2 of 6 Las Cruces Foothills Landfill MW-7 Las Cruces Foothills Landfill monitoring well MW-7 baseline standard constituent CAS Number unit GWPS RESULTS FOR MW-7 average deviation date 7/15/03 8/27/03 9/29/03 10/27/03 11/25/03 12/29/03 12/2/04 12/14/05 12/12/06 1/18/08 12/23/08 12/29/09 12/29/10 12/28/11 6/19/12 12/19/12 6/26/13 12/19/13 7/15/03 to 7/15/03 to 12/2/04 12/2/04 cyanide mg/l 0.2 <0.01 <0.1 <0.1 <0.1 <0.1 <0.1 x x x x <0.005 x x x x x x x <0.1 x perchlorate mg/l - x x x x x x x x x x <0.001 x x x x x x x x x total phenolics 1 - mg/l <0.005 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 < < < < < < < < < <0.003 x Polychlorinated Biphenyls (PCBs) mg/l (^^) (^^) (^^) (^^) (^^) (^^) x x x x (^^) x x x x x x x (^^) x Volatile Organic Compounds 1,1,1,2-Tetrachloroethane mg/l 0.02 < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.005 x 1,1,1-Trichloroethane mg/l 0.06 < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.005 x 1,1,2,2-Tetrachloroethane mg/l 0.01 < <0.001 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.005 x 1,1,2-Trichloroethane mg/l < <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.002 x 1,1-Dichloroethane mg/l < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 < <0.001 <0.001 <0.001 <0.001 <0.005 x 1,1-Dichloroethylene (1,1-Dichloroethene; 1,1-DCE) mg/l < <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 < <0.001 <0.001 <0.001 <0.001 <0.001 x 1,1-Dichloropropene mg/l - < <0.005 <0.005 <0.005 <0.005 <0.005 x x x x <0.005 x x x x x x x <0.005 x 1,2 Dibromo-3-chloropropane (DBCP) mg/l <0.010 < < < < < x x x x < < < < < < < < < x 1,2,3-Trichlorobenzene mg/l - < x x x x x x x x x x x x x x x x x < x 1,2,3-Trichloropropane mg/l 0.01 < <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 x 1,2,4-Trichlorobenzene mg/l - < <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x 1,2-Dichlorobenzene (o-dichlorobenzene) mg/l 0.6 < <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 x 1,2-Dichloroethane (EDC) mg/l < <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x 1,2-Dichloropropane mg/l < < < < < < < < < < < < < < < < < < < x 1,3-Dichlorobenzene (m-dichlorobenzene) mg/l - < <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 <0.001 x x x x x x <0.01 x 1,3-Dichloropropane mg/l - < <0.005 <0.01 <0.01 <0.01 <0.01 x x x x <0.01 x x x x x x x <0.01 x 1,4-Dichlorobenzene (p-dichlorobenzene) mg/l < <0.015 <0.015 <0.015 <0.015 <0.015 <0.015 <0.015 <0.015 <0.015 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.015 x 2,2-Dichloropropane mg/l - < < <0.015 <0.015 <0.015 <0.015 x x x x <0.015 x x x x x x x <0.015 x 2-Butanone (Methyl Ethyl Ketone) (MEK) mg/l - <0.025 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x 2-Chlorotoluene mg/l - < x x x x x x x x x x x x x x x x x < x 2-Hexanone (Butyl Ketone) mg/l 0.02 <0.025 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.05 x 4-Chlorotoluene mg/l - < x x x x x x x x x x x x x x x x x < x 4-Methyl-2-pentanone mg/l - <0.025 <0.015 <0.015 <0.015 <0.015 <0.015 <0.015 <0.015 <0.015 <0.015 <0.015 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.015 x Acetone mg/l - <0.025 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.1 x Acetonitrile mg/l - <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.2 <0.2 <0.2 <0.2 <0.1 x x x x x x x <0.1 x Acrolein mg/l - <0.025 <0.1 <0.1 <0.1 <0.1 <0.1 x x x x <0.1 x x x x x x x <0.1 x Acrylonitrile mg/l - <0.025 <0.2 <0.2 <0.2 <0.2 <0.2 x x x x <0.2 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.2 x Allyl chloride mg/l - x <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.01 x x x x x x x <0.01 x Benzene mg/l < <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 < <0.001 <0.001 <0.001 <0.001 <0.001 x Bis(chloromethyl) ether mg/l - x x x x x x x x x x (#) x x x x x x x x x Bromochloromethane mg/l - <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 x Bromomethane (methyl bromide) mg/l - <0.001 <0.01 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.02 x Carbon Disulfide mg/l - <0.005 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.1 x Carbon Tetrachloride mg/l < <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.002 x Chlorobenzene mg/l 0.1 < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.005 x Chloroethane mg/l - < <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.01 x Chloromethane (methyl chloride) mg/l 0.02 < <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Chloroprene (2-Chloro-1,3-butadiene) mg/l - <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 x x x x x x x x x x x x <0.05 x cis-1,2-dichloroethylene (cis-1,2-dichloroethene) mg/l <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 < < <0.005 x cis-1,3-dichloropropene mg/l - < <0.001 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.02 x Dibromomethane (methylene bromide) mg/l - < <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.02 x Dichlorodifluoromethane mg/l x < Ethyl methacrylate mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.01 x x x x x x x <0.01 x Ethylbenzene mg/l 0.75 < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.005 x Ethylene Dibromide (1,2-Dibromoethane) (EDB) mg/l < < < < < < x x x x < < < E-06 < < < < < x JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

96 APPEIX B Page 3 of 6 Las Cruces Foothills Landfill MW-7 Las Cruces Foothills Landfill monitoring well MW-7 baseline standard constituent CAS Number unit GWPS RESULTS FOR MW-7 average deviation date 7/15/03 8/27/03 9/29/03 10/27/03 11/25/03 12/29/03 12/2/04 12/14/05 12/12/06 1/18/08 12/23/08 12/29/09 12/29/10 12/28/11 6/19/12 12/19/12 6/26/13 12/19/13 7/15/03 to 7/15/03 to 12/2/04 12/2/04 Hexachlorobutadiene mg/l - < <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x Isobutyl alcohol mg/l - <0.1 <0.05 <0.05 <0.05 <0.05 <0.05 x x x x <0.05 x x x x x x x <0.05 x Isopropylbenzene mg/l - < x x x x x x x x x x x x x x x x x < x Methacrylonitrile mg/l - <0.025 <0.005 <0.005 <0.005 <0.005 <0.005 x x x x <0.005 x x x x x x x <0.005 x Methyl Iodide (Iodomethane) mg/l - <0.005 <0.04 <0.04 <0.04 <0.04 <0.04 <0.04 <0.04 <0.04 <0.04 <0.04 <0.010 <0.010 <0.010 <0.010 <0.010 <0.010 <0.010 <0.04 x Methyl methacrylate mg/l - <0.03 <0.03 <0.03 <0.03 <0.03 <0.03 x x x x <0.03 x x x x x x x <0.03 x Methylene Chloride mg/l < <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 < <0.001 <0.001 <0.001 <0.001 <0.001 x n-butylbenzene mg/l - < x x x x x x x x x x x x x x x x x < x Propionitrile mg/l - <0.06 <0.06 <0.06 <0.06 <0.06 <0.06 x x x x <0.06 x x x x x x x <0.06 x Propylbenzene mg/l - < x x x x x x x x x x x x x x x x x < x sec-butylbenzene mg/l - < x x x x x x x x x x x x x x x x x < x Styrene mg/l 0.1 < <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 x tert-butyl methyl ether (MTBE) (a) mg/l 0.1 <0.005 x x x x x x x x x <0.001 x x x x x x x <0.005 x tert-butylbenzene mg/l - < x x x x x x x x x x x x x x x x x < x Tetrachloroethene (PCE) mg/l Tetrahydrofuran (THF) mg/l - <0.01 x x x x x x x x x x x x x x x x x <0.01 x Toluene mg/l <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 < Total Xylenes (m&p and o) 1 NA mg/l 0.62 <0.001 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.002 < <0.002 <0.002 <0.002 <0.002 <0.005 x trans-1,2-dichloroethene mg/l 0.1 < <0.005 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.001 < <0.001 <0.001 <0.001 <0.001 <0.002 x trans-1,3-dichloropropene mg/l - <0.001 <0.001 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.01 x trans-1,4-dichloro-2-butene mg/l - <0.01 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.1 x Trichloroethene (TCE) mg/l Trichlorofluoromethane mg/l <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 < x Vinyl acetate mg/l - <0.025 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.05 x Vinyl chloride mg/l < < < < < < < < < < < < < < < < < x Trihalomethanes (THM) Bromodichloromethane mg/l - < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 < < < < < < <0.005 x Bromoform mg/l 0.1 <0.001 <0.001 <0.015 <0.015 <0.015 <0.015 <0.015 <0.015 <0.015 <0.015 <0.015 <0.001 < < < < < < <0.015 x Chloroform mg/l 0.1 < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 < < < < < < <0.005 x Dibromochloromethane mg/l - < <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 < < < < < < <0.005 x Semi Volatile Organic Compounds 1,2,4,5-Tetrachlorobenzene mg/l - <0.010 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x 1,2-Diphenylhydrazine mg/l - <0.005 x x x x x x x x x <0.001 x x x x x x x <0.005 x 1,4-Naphthoquinone mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x 1-Chloronaphthalene NA mg/l - <0.005 x x x x x x x x x x x x x x x x x <0.005 x 1-Methylnaphthalene mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x 1-Naphthylamine mg/l - <0.010 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x 2,4,6-Trinitrotoluene (TNT) mg/l - x x x x x x x x x x < x x x x x x x x x 2,4-Dinitrotoluene (2,4-DNT) mg/l - <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 x x x x <0.001 x x x x x x x <0.005 x 2,6-Dinitrotoluene 1 (2,6-DNT) mg/l - <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 x x x x <0.001 x x x x x x x <0.005 x 2-Acetylaminofluorene mg/l - <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 x x x x <0.001 x x x x x x x <0.02 x 2-Chloronaphthalene mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x 2-Methylnaphthalene mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x 2-Naphthylamine mg/l - <0.010 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x 2-Nitroaniline (o-nitroaniline) mg/l - <0.050 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x 2-Picoline mg/l - <0.010 x x x x x x x x x <0.001 x x x x x x x <0.01 x 3,3'-Dichlorobenzidine mg/l - <0.050 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x 3,3'-Dimethylbenzidine mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x 3-Methylcholanthrene mg/l - <0.010 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x 3-Nitroaniline (m-nitroaniline) mg/l - <0.050 <0.05 <0.05 <0.05 <0.05 <0.05 x x x x <0.001 x x x x x x x <0.05 x JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

97 APPEIX B Page 4 of 6 Las Cruces Foothills Landfill MW-7 Las Cruces Foothills Landfill monitoring well MW-7 baseline standard constituent CAS Number unit GWPS RESULTS FOR MW-7 average deviation date 7/15/03 8/27/03 9/29/03 10/27/03 11/25/03 12/29/03 12/2/04 12/14/05 12/12/06 1/18/08 12/23/08 12/29/09 12/29/10 12/28/11 6/19/12 12/19/12 6/26/13 12/19/13 7/15/03 to 7/15/03 to 12/2/04 12/2/04 4-Aminobiphenyl mg/l - <0.020 <0.02 <0.02 <0.02 <0.02 <0.02 x x x x <0.001 x x x x x x x <0.02 x 4-Bromophenylphenyl ether mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x 4-Chloroaniline (p-chloroanaline) mg/l - <0.020 <0.02 <0.02 <0.02 <0.02 <0.02 x x x x <0.001 x x x x x x x <0.02 x 4-Chlorophenylphenyl ether mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x 4-Nitroaniline (p-nitroaniline) mg/l - <0.050 <0.02 <0.02 <0.02 <0.02 <0.02 x x x x <0.001 x x x x x x x <0.02 x 5-Nitro-o-toluidine mg/l - <0.05 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x 7,12-Dimethylbenz (a) anthracene mg/l - <0.010 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x Acenaphthene mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x Acenaphthylene mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x Acetophenone mg/l - <0.010 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x alpha,alpha-dimethylphenethylamine mg/l - <0.010 x x x x x x x x x <0.001 x x x x x x x <0.01 x Aniline mg/l - <0.010 x x x x x x x x x <0.001 x x x x x x x <0.01 x Anthracene mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x Benzidine mg/l - <0.050 x x x x x x x x x <0.001 x x x x x x x <0.05 x Benzo (a) anthracene mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x < x x x x x x x <0.01 x Benzo (a) pyrene mg/l - <0.005 <0.02 <0.02 <0.02 <0.02 <0.02 x x x x < x x x x x x x <0.02 x Benzo (b) fluoranthene mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x Benzo (g,h,i) perylene mg/l - <0.005 <0.02 <0.02 <0.02 <0.02 <0.02 x x x x < x x x x x x x <0.02 x Benzo (k) fluoranthene mg/l <0.005 < < < < < x x x x < x x x x x x x < x Benzoic acid mg/l <0.050 x x x x x x x x x x x x x x x x x <0.05 x Benzyl alcohol mg/l - <0.020 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x bis (2-Chloroethoxy) methane mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x bis (2-Chloroethyl) ether mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x bis (2-Chloroisopropyl) ether (bis (2-chloro-1-methylethyl) ethe mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x bis (2-Ethylhexyl) phthalate mg/l <0.02 <0.02 <0.02 <0.02 <0.02 x x x x <0.001 x x x x x x x <0.02 x Butylbenzylphthalate mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x Carbazole mg/l - <0.005 x x x x x x x x x <0.001 x x x x x x x <0.005 x Chlorobenzilate mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x Chrysene mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x < x x x x x x x <0.01 x Diallate mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x Dibenz (a,j) acridine mg/l - <0.010 x x x x x x x x x x x x x x x x x <0.01 x Dibenzo (a,h) anthracene mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x < x x x x x x x <0.01 x Dibenzofuran mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x Diethylene Glycol Monobutyl Ether mg/l - x x x x x x x x x x x x x x x x x x x x Diethylphthalate mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x Dimethylphthalate mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x Di-n-butylphthalate mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x Di-n-octylphthalate mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x Diphenylamine mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x Ethyl methanesulfonate mg/l - <0.020 <0.02 <0.02 <0.02 <0.02 <0.02 x x x x <0.001 x x x x x x x <0.02 x Fluoranthene mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x Fluorene mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x Hexachlorobenzene mg/l - <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 x x x x < x x x x x x x <0.001 x Hexachlorocyclopentadiene mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x Hexachloroethane mg/l - <0.005 <0.05 <0.05 <0.05 <0.05 <0.05 x x x x <0.001 x x x x x x x <0.05 x Hexachloropropene mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x HMX mg/l - x x x x x x x x x x < x x x x x x x x x Indeno (1,2,3-cd) pyrene mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x < x x x x x x x <0.01 x Isophorone mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x Isosafrole mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

98 APPEIX B Page 5 of 6 Las Cruces Foothills Landfill MW-7 Las Cruces Foothills Landfill monitoring well MW-7 baseline standard constituent CAS Number unit GWPS RESULTS FOR MW-7 average deviation date 7/15/03 8/27/03 9/29/03 10/27/03 11/25/03 12/29/03 12/2/04 12/14/05 12/12/06 1/18/08 12/23/08 12/29/09 12/29/10 12/28/11 6/19/12 12/19/12 6/26/13 12/19/13 7/15/03 to 7/15/03 to 12/2/04 12/2/04 m-dinitrobenzene (1,3-DNB) mg/l - <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 x x x x x x x x x x x x <0.02 x Methapyrilene mg/l - <0.1 <0.02 <0.02 <0.02 <0.02 <0.02 x x x x <0.001 x x x x x x x <0.02 x Methyl methanesulfonate mg/l - <0.010 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x Naphthalene mg/l 0.03 <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x Nitrobenzene mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x n-nitrosodiethylamine mg/l - <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 x x x x <0.001 x x x x x x x <0.02 x n-nitrosodimethylamine mg/l - <0.010 <0.002 <0.002 <0.002 <0.002 <0.002 x x x x <0.001 x x x x x x x <0.002 x n-nitrosodi-n-butylamine mg/l - <0.010 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x n-nitrosodinpropylamine mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x n-nitrosodiphenylamine mg/l - <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 x x x x <0.001 x x x x x x x <0.005 x n-nitrosomethylethylamine mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x n-nitrosopiperidine mg/l - <0.020 <0.02 <0.02 <0.02 <0.02 <0.02 x x x x <0.001 x x x x x x x <0.02 x n-nitrosopyrrolidine mg/l - <0.02 <0.04 <0.04 <0.04 <0.04 <0.04 x x x x <0.001 x x x x x x x <0.04 x o-toluidine mg/l - <0.01 <0.002 <0.002 <0.002 <0.002 <0.002 x x x x <0.001 x x x x x x x <0.002 x p-(dimethylamino) azobenzene mg/l - <0.010 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x Pentachlorobenzene mg/l - <0.010 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x Pentachloronitrobenzene mg/l - <0.020 <0.02 <0.02 <0.02 <0.02 <0.02 x x x x <0.001 x x x x x x x <0.02 x Phenacetin mg/l - <0.020 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x Phenanthrene mg/l - <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 x x x x <0.001 x x x x x x x <0.001 x p-phenylenediamine mg/l - <0.05 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x Pronamide mg/l - <0.010 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x Pyrene mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x Pyridine mg/l - <0.010 x x x x x x x x x <0.001 x x x x x x x <0.01 x RDX mg/l - x x x x x x x x x x < x x x x x x x x x Safrole mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x sym-trinitrobenzene 1 (1,3,5-TNB) mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x x x x x x x x x <0.01 x Semi Volatile Organic Compounds - Phenolics 2,3,4,6-Tetrachlorophenol mg/l - <0.010 <0.01 <0.01 <0.01 <0.01 x x x x x <0.001 x x x x x x x <0.01 x 2,4,5-Trichlorophenol mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 x x x x x <0.001 x x x x x x x <0.01 x 2,4,6-Trichlorophenol mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 x x x x x <0.001 x x x x x x x <0.01 x 2,4-Dichlorophenol mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 x x x x x <0.001 x x x x x x x <0.01 x 2,4-Dimethylphenol mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 x x x x x <0.001 x x x x x x x <0.01 x 2,4-Dinitrophenol mg/l - <0.050 <0.05 <0.05 <0.05 <0.05 x x x x x <0.001 x x x x x x x <0.05 x 2,6-Dichlorophenol mg/l - <0.010 <0.01 <0.01 <0.01 <0.01 x x x x x <0.001 x x x x x x x <0.01 x 2-Chlorophenol mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 x x x x x <0.001 x x x x x x x <0.01 x 2-Methylphenol (o-cresol) mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 x x x x x <0.001 x x x x x x x <0.01 x 2-Nitrophenol (o-nitrophenol) mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 x x x x x <0.001 x x x x x x x <0.01 x 3-Methylphenol/4-Methylphenol (m&p-cresol) / mg/l - <0.005 <0.02 <0.02 <0.02 <0.02 x x x x x <0.001 x x x x x x x <0.02 x 4,6-Dinitro-2-methylphenol (4,6-Dinitro-o-cresol) mg/l - <0.050 <0.05 <0.05 <0.05 <0.05 x x x x x <0.001 x x x x x x x <0.05 x p-chloro-m-cresol (4-Chloro-3-methylphenol) mg/l - <0.020 <0.005 <0.005 <0.005 <0.005 <0.005 x x x x <0.001 x x x x x x x <0.005 x 4-Nitrophenol (p-nitrophenol) mg/l - <0.050 <0.05 <0.05 <0.05 <0.05 x x x x x <0.001 x x x x x x x <0.05 x Pentachlorophenol mg/l - <0.020 <0.02 <0.02 <0.02 <0.02 x x x x x <0.001 x x x x x x x <0.02 x Phenol 1 (a) mg/l <0.005 <0.01 <0.01 <0.01 <0.01 x x x x x <0.001 x x x x x x x <0.01 x Radium 226 and 228 NA pci/l Ra-226, total NA pci/l <2.5 <2.5 <2.5 <2.5 <2.5 x x x x 0.12 x x x x x x x <2.5 x Ra-228 1, total NA pci/l <2.5 <2.5 <2.5 <2.5 <2.5 x x x x 1.9 x x x x x x x <2.5 x Chlorinated Pesticides 4,4'-DDD (p,p'-ddd) mg/l - < <0.01 <0.0.1 <0.0.1 <0.0.1 <0.0.1 x x x x < x x x x x x x <0.0.1 x 4,4'-DDE (p,p'-dde) mg/l - < < < < < < x x x x < x x x x x x x < x 4,4'-DDT (p,p'-ddt) mg/l - < < < < < < x x x x < x x x x x x x < x JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

99 APPEIX B Page 6 of 6 Las Cruces Foothills Landfill MW-7 Las Cruces Foothills Landfill monitoring well MW-7 baseline standard constituent CAS Number unit GWPS RESULTS FOR MW-7 average deviation date 7/15/03 8/27/03 9/29/03 10/27/03 11/25/03 12/29/03 12/2/04 12/14/05 12/12/06 1/18/08 12/23/08 12/29/09 12/29/10 12/28/11 6/19/12 12/19/12 6/26/13 12/19/13 7/15/03 to 7/15/03 to 12/2/04 12/2/04 aldrin mg/l - < < < < < < x x x x < x x x x x x x < x alpha-bhc mg/l - < < < < < < x x x x < x x x x x x x < x alpha-chlordane mg/l - < alpha + alpha + alpha + alpha + alpha + x x x x x x x x x x x x alpha + x beta-bhc mg/l - < see above see above see above see above see above x x x x x x x x x x x x see above x Chlordane mg/l x x x x x x x x x x x x x x x x x x x x delta-bhc mg/l - < <0.001 <0.001 <0.001 <0.001 <0.001 x x x x < x x x x x x x <0.001 x Dieldrin mg/l - < <0.001 <0.001 <0.001 <0.001 <0.001 x x x x < x x x x x x x <0.001 x Endosulfan I (alpha-endosulfan) mg/l - < <0.001 <0.001 <0.001 <0.001 <0.001 x x x x < x x x x x x x <0.001 x Endosulfan II (beta-endosulfan) mg/l - < <0.001 <0.001 <0.001 <0.001 <0.001 x x x x < x x x x x x x <0.001 x Endosulfan sulfate mg/l - < <0.001 <0.001 <0.001 <0.001 <0.001 x x x x < x x x x x x x <0.001 x Endrin aldehyde mg/l - < <0.001 <0.001 <0.001 <0.001 <0.001 x x x x < x x x x x x x <0.001 x Endrin ketone mg/l - < <0.001 <0.001 <0.001 <0.001 <0.001 x x x x < x x x x x x x <0.001 x Endrin mg/l - < <0.001 <0.001 <0.001 <0.001 <0.001 x x x x < x x x x x x x <0.001 x gamma-bhc mg/l - < <0.001 <0.001 <0.001 <0.001 <0.001 x x x x < x x x x x x x <0.001 x gamma-chlordane mg/l - < x x x x x x x x x x x x x x x x x < x Heptachlor epoxide mg/l - < <0.001 <0.001 <0.001 <0.001 <0.001 x x x x < x x x x x x x <0.001 x Heptachlor mg/l - < <0.001 <0.001 <0.001 <0.001 <0.001 x x x x < x x x x x x x <0.001 x Isodrin mg/l - <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 x x x x <0.001 x x x x x x x <0.02 x Kepone mg/l - <0.025 <0.02 <0.02 <0.02 <0.02 <0.02 x x x x <0.001 x x x x x x x <0.02 x Methoxychlor mg/l - <0.001 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x < x x x x x x x <0.01 x Toxaphene mg/l - <0.005 <0.001 <0.001 <0.001 <0.001 <0.001 x x x x <0.001 x x x x x x x <0.001 x Polychlorinated Biphenyls (PCBs) Arochlor mg/l - < < < < < < x x x x < x x x x x x x < x Arochlor mg/l - < < < < < < x x x x < x x x x x x x < x Arochlor mg/l - < < < < < < x x x x < x x x x x x x < x Arochlor mg/l - < < < < < < x x x x < x x x x x x x < x Arochlor mg/l - < < < < < < x x x x < x x x x x x x < x Arochlor mg/l - < < < < < < x x x x < x x x x x x x < x Arochlor mg/l - < < < < < < x x x x < x x x x x x x < x Other Pesticides and Herbicides 1 2,3,7,8-TCDD ng/l 0.03 x x x x x x x x x x < x x x x x x x x x 2,4,5-T mg/l - <0.001 <0.002 <0.002 <0.002 <0.002 <0.002 x x x x < x x x x x x x <0.002 x 2,4-Dichlorophenoxyacetic acid (2,4-D) mg/l - <0.005 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x < x x x x x x x <0.01 x Dimethoate mg/l - < <0.02 <0.02 <0.02 <0.02 <0.02 x x x x <0.001 x x x x x x x <0.02 x Dinoseb mg/l - <0.005 <0.02 <0.02 <0.02 <0.02 <0.02 x x x x < x x x x x x x <0.02 x Disulfoton mg/l - < <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x Famphur mg/l - < <0.02 <0.02 <0.02 <0.02 <0.02 x x x x <0.001 x x x x x x x <0.02 x Methyl parathion mg/l - < <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x o,o,o-triethyl phosphorothioate mg/l - <0.010 <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x Parathion (Ethyl) mg/l - < <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x Phorate mg/l - < <0.01 <0.01 <0.01 <0.01 <0.01 x x x x <0.001 x x x x x x x <0.01 x Silvex 1 (2,4,5-TP) mg/l - <0.001 <0.002 <0.002 <0.002 <0.002 <0.002 x x x x < x x x x x x x <0.002 x o,o-diethyl o-2pyrazinyl phosphorothioate (Thionazin) mg/l - x <0.02 <0.02 <0.02 <0.02 <0.02 x x x x <0.001 x x x x x x x <0.02 x * baseline averages and standard deviations are based on 1999 and 2000 data only as per requirements in Environmental Protection, subpart 803. Ground Water Sampling and Analysis, hazardous x parameter not analyzed (^^) See section entitled 'Polychlorinated Biphenyls (PCBs)' for break-out of PCB concentrations. (#) Scanned for and not detected, breaks down almost immediately in water. JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

100 JSAI MW-8 JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

101 APPEIX B Las Cruces Foothills Landfill MW-8 Page 1 of 4 Las Cruces Foothills Landfill monitoring well MW-8 baseline standard constituent CAS Number unit GWPS RESULTS FOR MW-8 average deviation date 12/29/10 5/18/11 8/23/11 11/28/11 12/29/11 12/20/12 6/26/13 12/29/10 to 12/29/10 to 12/29/11 12/29/11 Field Parameters water level elevation ft amsl , conductivity µs/cm ph ph units temperature deg F Major Ions calcium mg/l chloride mg/l fluoride mg/l x x magnesium mg/l potassium mg/l sodium mg/l sulfate mg/l alkalinity NA mg/l bicarbonate alkalinity mg/l carbonate alkalinity mg/l - <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 x total dissolved solids NA mg/l 1, Nitrogen Species ammonia as N mg/l - <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 x Kjeldahl nitrogen mg/l - <1.0 <1.0 <1.0 <1.0 <1.0 x x <1.0 x nitrate as N mg/l x x x x x x nitrite mg/l - x x x x x x x x x total nitrogen - mg/l - <1.0 <1.0 <1.0 <1.0 <1.0 x x <1.0 x Metals aluminum mg/l x x antimony mg/l <0.001 <0.001 <0.001 <0.001 <0.001 < x arsenic mg/l 0.01 < barium mg/l beryllium mg/l <0.001 <0.001 <0.001 <0.001 <0.001 <0.002 <0.002 <0.001 x boron mg/l 0.75 <0.04 <0.04 <0.04 <0.04 <0.04 x x <0.04 x cadmium mg/l <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 x chromium mg/l 0.05 < <0.006 <0.006 <0.006 <0.006 <0.006 <0.006 x cobalt mg/l 0.05 <0.006 <0.006 <0.006 <0.006 <0.006 <0.006 <0.006 <0.006 x copper mg/l 1.0 <0.006 <0.006 <0.006 <0.006 <0.006 <0.006 <0.006 <0.006 x iron mg/l 1.0 < <0.05 <0.05 <0.05 < x lead mg/l 0.05 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.005 x manganese mg/l < < mercury mg/l < < < < < x x < x molybdenum mg/l <0.008 <0.008 <0.008 x x nickel mg/l 0.2 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x selenium mg/l 0.05 <0.001 <0.001 < <0.001 <0.001 < x silver mg/l 0.05 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 x thallium mg/l <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x tin mg/l - <0.01 x x x x x x <0.01 x uranium mg/l 0.03 <0.001 <0.001 <0.001 <0.001 <0.001 x x <0.001 x vanadium mg/l - <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 x zinc mg/l 10.0 <0.02 <0.02 <0.02 <0.02 <0.02 <0.01 <0.01 <0.02 x total organic carbon - mg/l phosphate mg/l - <0.5 <0.5 <0.5 <0.5 <0.5 x x <0.5 x sulfide mg/l - <0.1 x x x x x x <0.1 x cyanide mg/l 0.2 <0.01 <0.01 <0.01 <0.02 <0.01 x x <0.02 x perchlorate mg/l x x x x x x total phenolics 1 - mg/l < < < < < < < < x Polychlorinated Biphenyls (PCBs) mg/l < < < < < x x < x Volatile Organic Compounds 1,1,1,2-Tetrachloroethane mg/l 0.02 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x 1,1,1-Trichloroethane mg/l 0.06 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x 1,1,2,2-Tetrachloroethane mg/l 0.01 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x 1,1,2-Trichloroethane mg/l <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x 1,1-Dichloroethane mg/l <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x 1,1-Dichloroethylene (1,1-Dichloroethene; 1,1-DCE) mg/l <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x 1,1-Dichloropropene mg/l - <0.001 x x x x x x <0.001 x 1,2 Dibromo-3-chloropropane (DBCP) mg/l < < < < < < < < x 1,2,3-Trichlorobenzene mg/l - x x x x x x x x x 1,2,3-Trichloropropane mg/l 0.01 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x 1,2,4-Trichlorobenzene mg/l - <0.01 x x x x x x <0.01 x 1,2-Dichlorobenzene (o-dichlorobenzene) mg/l 0.6 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x 1,2-Dichloroethane (EDC) mg/l <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x 1,2-Dichloropropane mg/l < < < < < < < < x 1,3-Dichlorobenzene (m-dichlorobenzene) mg/l - <0.001 x x x x x x <0.001 x 1,3-Dichloropropane mg/l - <0.001 x x x x x x <0.001 x 1,4-Dichlorobenzene (p-dichlorobenzene) mg/l <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x 2,2-Dichloropropane mg/l - <0.001 x x x x x x <0.001 x 2-Butanone (Methyl Ethyl Ketone) (MEK) mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x 2-Chlorotoluene mg/l - x x x x x x x x x 2-Hexanone (Butyl Ketone) mg/l 0.02 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

102 APPEIX B Las Cruces Foothills Landfill MW-8 Page 2 of 4 Las Cruces Foothills Landfill monitoring well MW-8 baseline standard constituent CAS Number unit GWPS RESULTS FOR MW-8 average deviation date 12/29/10 5/18/11 8/23/11 11/28/11 12/29/11 12/20/12 6/26/13 12/29/10 to 12/29/10 to 12/29/11 12/29/11 4-Chlorotoluene mg/l - x x x x x x x x x 4-Methyl-2-pentanone mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x Acetone mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x Acetonitrile mg/l - <0.1 x x x x x x <0.1 x Acrolein mg/l - <0.1 x x x x x x <0.1 x Acrylonitrile mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x Allyl chloride mg/l - <0.01 x x x x x x <0.01 x Benzene mg/l <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Bis(chloromethyl) ether mg/l - (#) x x x x x x (#) x Bromochloromethane mg/l - <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 x Bromomethane (methyl bromide) mg/l - <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 x Carbon Disulfide mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x Carbon Tetrachloride mg/l <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Chlorobenzene mg/l 0.1 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Chloroethane mg/l - <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 x Chloromethane (methyl chloride) mg/l 0.02 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Chloroprene (2-Chloro-1,3-butadiene) mg/l - <0.05 x x x x x x <0.05 x cis-1,2-dichloroethylene (cis-1,2-dichloroethene) mg/l 0.07 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x cis-1,3-dichloropropene mg/l - <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Dibromomethane (methylene bromide) mg/l - <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Dichlorodifluoromethane mg/l - <0.001 <0.001 <0.001 <0.001 < <0.001 x Ethyl methacrylate mg/l - <0.01 x x x x x x <0.01 x Ethylbenzene mg/l 0.75 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Ethylene Dibromide (1,2-Dibromoethane) (EDB) mg/l < < < < < < < < x Hexachlorobutadiene mg/l - <0.01 x x x x x x <0.01 x Isobutyl alcohol mg/l - <0.05 x x x x x x <0.05 x Isopropylbenzene mg/l - x x x x x x x x x Methacrylonitrile mg/l - <0.005 x x x x x x <0.005 x Methyl Iodide (Iodomethane) mg/l - <0.01 x x x x x x <0.01 x Methyl methacrylate mg/l - <0.03 x x x x x x <0.03 x Methylene Chloride mg/l <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x n-butylbenzene mg/l - x x x x x x x x x Propionitrile mg/l - <0.06 x x x x x x <0.06 x Propylbenzene mg/l - x x x x x x x x x sec-butylbenzene mg/l - x x x x x x x x x Styrene mg/l 0.1 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x tert-butyl methyl ether (MTBE) (a) mg/l 0.1 <0.001 x x x x x x <0.001 x tert-butylbenzene mg/l - x x x x x x x x x Tetrachloroethene (PCE) mg/l < Tetrahydrofuran (THF) mg/l - x x x x x x x x x Toluene mg/l 0.75 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Total Xylenes (m&p and o) 1 NA mg/l 0.62 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 x trans-1,2-dichloroethene mg/l 0.1 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x trans-1,3-dichloropropene mg/l - <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x trans-1,4-dichloro-2-butene mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x Trichloroethene (TCE) mg/l <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Trichlorofluoromethane mg/l - <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Vinyl acetate mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x Vinyl chloride mg/l < < < < < < < < x Trihalomethanes (THM) Bromodichloromethane mg/l - <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Bromoform mg/l 0.1 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Chloroform mg/l 0.1 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Dibromochloromethane mg/l - <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Semi Volatile Organic Compounds 1,2,4,5-Tetrachlorobenzene mg/l - <0.01 x x x x x x <0.01 x 1,2-Diphenylhydrazine mg/l - <0.01 x x x x x x <0.01 x 1,4-Naphthoquinone mg/l - <0.01 x x x x x x <0.01 x 1-Chloronaphthalene NA mg/l - x x x x x x x x x 1-Methylnaphthalene mg/l - <0.01 <0.002 <0.002 <0.002 <0.002 x x <0.01 x 1-Naphthylamine mg/l - <0.01 x x x x x x <0.01 x 2,4,6-Trinitrotoluene (TNT) mg/l - < < < x x x x < x 2,4-Dinitrotoluene (2,4-DNT) mg/l - < < < x x x x < x 2,6-Dinitrotoluene 1 (2,6-DNT) mg/l - < < < x x x x < x 2-Acetylaminofluorene mg/l - <0.01 x x x x x x <0.01 x 2-Chloronaphthalene mg/l - <0.01 x x x x x x <0.01 x 2-Methylnaphthalene mg/l - <0.01 <0.002 <0.002 <0.002 <0.002 x x <0.01 x 2-Naphthylamine mg/l - <0.01 x x x x x x <0.01 x 2-Nitroaniline (o-nitroaniline) mg/l - <0.01 x x x x x x <0.01 x 2-Picoline mg/l - <0.01 x x x x x x <0.01 x 3,3'-Dichlorobenzidine mg/l - <0.01 x x x x x x <0.01 x 3,3'-Dimethylbenzidine mg/l - <0.01 x x x x x x <0.01 x 3-Methylcholanthrene mg/l - <0.01 x x x x x x <0.01 x 3-Nitroaniline (m-nitroaniline) mg/l - <0.01 x x x x x x <0.01 x 4-Aminobiphenyl mg/l - <0.01 x x x x x x <0.01 x 4-Bromophenylphenyl ether mg/l - <0.01 x x x x x x <0.01 x JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

103 APPEIX B Las Cruces Foothills Landfill MW-8 Page 3 of 4 Las Cruces Foothills Landfill monitoring well MW-8 baseline standard constituent CAS Number unit GWPS RESULTS FOR MW-8 average deviation date 12/29/10 5/18/11 8/23/11 11/28/11 12/29/11 12/20/12 6/26/13 12/29/10 to 12/29/10 to 12/29/11 12/29/11 4-Chloroaniline (p-chloroanaline) mg/l - <0.01 x x x x x x <0.01 x 4-Chlorophenylphenyl ether mg/l - <0.01 x x x x x x <0.01 x 4-Nitroaniline (p-nitroaniline) mg/l - <0.01 x x x x x x <0.01 x 5-Nitro-o-toluidine mg/l - <0.01 x x x x x x <0.01 x 7,12-Dimethylbenz (a) anthracene mg/l - <0.01 x x x x x x <0.01 x Acenaphthene mg/l - <0.01 x x x x x x <0.01 x Acenaphthylene mg/l - <0.01 x x x x x x <0.01 x Acetophenone mg/l x x x x x x x alpha,alpha-dimethylphenethylamine mg/l - <0.01 x x x x x x <0.01 x Aniline mg/l - <0.01 x x x x x x <0.01 x Anthracene mg/l - <0.01 x x x x x x <0.01 x Benzidine mg/l - <0.01 x x x x x x <0.01 x Benzo (a) anthracene mg/l - < x x x x x x < x Benzo (a) pyrene mg/l < < < < < x x < x Benzo (b) fluoranthene mg/l - < x x x x x x < x Benzo (g,h,i) perylene mg/l - <0.01 x x x x x x <0.01 x Benzo (k) fluoranthene mg/l - < x x x x x x < x Benzoic acid mg/l - x x x x x x x x x Benzyl alcohol mg/l - <0.01 x x x x x x <0.01 x bis (2-Chloroethoxy) methane mg/l - <0.01 x x x x x x <0.01 x bis (2-Chloroethyl) ether mg/l - <0.01 x x x x x x <0.01 x bis (2-Chloroisopropyl) ether (bis (2-chloro-1-methylethyl) ether) mg/l - <0.01 x x x x x x <0.01 x bis (2-Ethylhexyl) phthalate mg/l - <0.005 x x x x x x <0.005 x Butylbenzylphthalate mg/l - <0.01 x x x x x x <0.01 x Carbazole mg/l - <0.01 x x x x x x <0.01 x Chlorobenzilate mg/l - <0.01 x x x x x x <0.01 x Chrysene mg/l - < x x x x x x < x Diallate mg/l - <0.01 x x x x x x <0.01 x Dibenz (a,j) acridine mg/l - x x x x x x x x x Dibenzo (a,h) anthracene mg/l - < x x x x x x < x Dibenzofuran mg/l - <0.01 x x x x x x <0.01 x Diethylene Glycol Monobutyl Ether mg/l - x x x x x x x x x Diethylphthalate mg/l - <0.01 x x x x x x <0.01 x Dimethylphthalate mg/l - <0.01 x x x x x x <0.01 x Di-n-butylphthalate mg/l - <0.01 x x x x x x <0.01 x Di-n-octylphthalate mg/l - <0.01 x x x x x x <0.01 x Diphenylamine mg/l - <0.01 x x x x x x <0.01 x Ethyl methanesulfonate mg/l - <0.01 x x x x x x <0.01 x Fluoranthene mg/l - <0.01 x x x x x x <0.01 x Fluorene mg/l - <0.01 x x x x x x <0.01 x Hexachlorobenzene mg/l - <0.001 x x x x x x <0.001 x Hexachlorocyclopentadiene mg/l - <0.01 x x x x x x <0.01 x Hexachloroethane mg/l - <0.01 x x x x x x <0.01 x Hexachloropropene mg/l - <0.01 x x x x x x <0.01 x HMX mg/l < < x x x x < x Indeno (1,2,3-cd) pyrene mg/l - < x x x x x x < x Isophorone mg/l - <0.01 x x x x x x <0.01 x Isosafrole mg/l - <0.01 x x x x x x <0.01 x m-dinitrobenzene (1,3-DNB) mg/l - < < < x x x x < x Methapyrilene mg/l - <0.01 x x x x x x <0.01 x Methyl methanesulfonate mg/l - <0.01 x x x x x x <0.01 x Naphthalene mg/l 0.03 <0.01 <0.002 <0.002 <0.002 <0.002 x x <0.01 x Nitrobenzene mg/l - <0.01 < < x x x x <0.01 x n-nitrosodiethylamine mg/l - <0.01 x x x x x x <0.01 x n-nitrosodimethylamine mg/l - <0.01 x x x x x x <0.01 x n-nitrosodi-n-butylamine mg/l - <0.01 x x x x x x <0.01 x n-nitrosodinpropylamine mg/l - <0.01 x x x x x x <0.01 x n-nitrosodiphenylamine mg/l - <0.002 x x x x x x <0.002 x n-nitrosomethylethylamine mg/l - <0.002 x x x x x x <0.002 x n-nitrosopiperidine mg/l - <0.01 x x x x x x <0.01 x n-nitrosopyrrolidine mg/l - <0.01 x x x x x x <0.01 x o-toluidine mg/l - <0.002 x x x x x x <0.002 x p-(dimethylamino) azobenzene mg/l - <0.01 x x x x x x <0.01 x Pentachlorobenzene mg/l - <0.01 x x x x x x <0.01 x Pentachloronitrobenzene mg/l - <0.01 x x x x x x <0.01 x Phenacetin mg/l - <0.01 x x x x x x <0.01 x Phenanthrene mg/l - <0.01 x x x x x x <0.01 x p-phenylenediamine mg/l - <0.01 x x x x x x <0.01 x Pronamide mg/l - <0.01 x x x x x x <0.01 x Pyrene mg/l - <0.01 x x x x x x <0.01 x Pyridine mg/l - <0.01 x x x x x x <0.01 x RDX mg/l < < x x x x < x Safrole mg/l - <0.01 x x x x x x <0.01 x sym-trinitrobenzene 1 (1,3,5-TNB) mg/l - < < < x x x x < x Semi Volatile Organic Compounds - Phenolics 2,3,4,6-Tetrachlorophenol mg/l - <0.01 x x x x x x <0.01 x JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

104 APPEIX B Las Cruces Foothills Landfill MW-8 Page 4 of 4 Las Cruces Foothills Landfill monitoring well MW-8 baseline standard constituent CAS Number unit GWPS RESULTS FOR MW-8 average deviation date 12/29/10 5/18/11 8/23/11 11/28/11 12/29/11 12/20/12 6/26/13 12/29/10 to 12/29/10 to 12/29/11 12/29/11 2,4,5-Trichlorophenol mg/l - <0.01 x x x x x x <0.01 x 2,4,6-Trichlorophenol mg/l - <0.01 x x x x x x <0.01 x 2,4-Dichlorophenol mg/l - <0.01 x x x x x x <0.01 x 2,4-Dimethylphenol mg/l - <0.01 x x x x x x <0.01 x 2,4-Dinitrophenol mg/l - <0.01 x x x x x x <0.01 x 2,6-Dichlorophenol mg/l - <0.01 x x x x x x <0.01 x 2-Chlorophenol mg/l - <0.01 x x x x x x <0.01 x 2-Methylphenol (o-cresol) mg/l - <0.01 x x x x x x <0.01 x 2-Nitrophenol (o-nitrophenol) mg/l - <0.01 x x x x x x <0.01 x 3-Methylphenol/4-Methylphenol (m&p-cresol) / mg/l - <0.01 x x x x x x <0.01 x 4,6-Dinitro-2-methylphenol (4,6-Dinitro-o-cresol) mg/l - <0.01 x x x x x x <0.01 x p-chloro-m-cresol (4-Chloro-3-methylphenol) mg/l - <0.005 x x x x x x <0.005 x 4-Nitrophenol (p-nitrophenol) mg/l - <0.01 x x x x x x <0.01 x Pentachlorophenol mg/l - <0.01 x x x x x x <0.01 x Phenol 1 (a) mg/l <0.01 x x x x x x <0.01 x Radium 226 and 228 NA pci/l x x Ra-226, total NA pci/l x x Ra-228 1, total NA pci/l x x Chlorinated Pesticides 4,4'-DDD (p,p'-ddd) mg/l - <0.01 x x x x x x <0.01 x 4,4'-DDE (p,p'-dde) mg/l - < x x x x x x < x 4,4'-DDT (p,p'-ddt) mg/l - < x x x x x x < x aldrin mg/l - < x x x x x x < x alpha-bhc mg/l - < x x x x x x < x alpha-chlordane mg/l - x x x x x x x x x beta-bhc mg/l - < x x x x x x < x Chlordane mg/l <0.005 x x x x x x <0.005 x delta-bhc mg/l - < x x x x x x < x Dieldrin mg/l - <0.001 x x x x x x <0.001 x Endosulfan I (alpha-endosulfan) mg/l - <0.001 x x x x x x <0.001 x Endosulfan II (beta-endosulfan) mg/l - <0.001 x x x x x x <0.001 x Endosulfan sulfate mg/l - <0.001 x x x x x x <0.001 x Endrin aldehyde mg/l - <0.001 x x x x x x <0.001 x Endrin ketone mg/l - x x x x x x x x x Endrin mg/l - <0.001 x x x x x x <0.001 x gamma-bhc mg/l - < x x x x x x < x gamma-chlordane mg/l - x x x x x x x x x Heptachlor epoxide mg/l - <0.001 x x x x x x <0.001 x Heptachlor mg/l - <0.001 x x x x x x <0.001 x Isodrin mg/l - <0.01 x x x x x x <0.01 x Kepone mg/l - <0.01 x x x x x x <0.01 x Methoxychlor mg/l - <0.01 x x x x x x <0.01 x Toxaphene mg/l - <0.001 x x x x x x <0.001 x Polychlorinated Biphenyls (PCBs) 1 Arochlor mg/l - < < < < < x x < x Arochlor mg/l - < < < < < x x < x Arochlor mg/l - < < < < < x x < x Arochlor mg/l - < < < < < x x < x Arochlor mg/l - < < < < < x x < x Arochlor mg/l - < < < < < x x < x Arochlor mg/l - < < < < < x x < x Other Pesticides and Herbicides 1 2,3,7,8-TCDD ng/l 0.03 < x x x x x x < x 2,4,5-T mg/l - < x x x x x x < x 2,4-Dichlorophenoxyacetic acid (2,4-D) mg/l - < x x x x x x < x Dimethoate mg/l - <0.01 x x x x x x <0.01 x Dinoseb mg/l - < x x x x x x < x Disulfoton mg/l - <0.01 x x x x x x <0.01 x Famphur mg/l - <0.005 x x x x x x <0.005 x Methyl parathion mg/l - <0.01 x x x x x x <0.01 x o,o,o-triethyl phosphorothioate mg/l - <0.01 x x x x x x <0.01 x Parathion (Ethyl) mg/l - <0.01 x x x x x x <0.01 x Phorate mg/l - <0.01 x x x x x x <0.01 x Silvex 1 (2,4,5-TP) mg/l - < x x x x x x < x o,o-diethyl o-2pyrazinyl phosphorothioate (Thionazin) mg/l - <0.01 x x x x x x <0.01 x * baseline averages and standard deviations are based on 1999 and 2000 data only as per requirements in EPA, Subpart 803., Ground Water Sampling and Analysis, hazardous x parameter not analyzed (#) Scanned for and not detected, breaks down almost immediately in water. JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

105 JSAI MW-9 JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

106 APPEIX B Las Cruces Foothills Landfill MW-9 Page 1 of 4 Las Cruces Foothills Landfill monitoring well MW-9 baseline standard constituent CAS Number unit GWPS RESULTS FOR MW-9 average deviation date 12/29/10 5/18/11 8/23/11 11/28/11 12/29/11 12/20/12 6/26/13 12/29/10 to 12/29/10 to 12/29/11 12/29/11 Field Parameters water level elevation ft amsl , conductivity µs/cm , ph ph units temperature deg F Major Ions calcium mg/l chloride mg/l fluoride mg/l x x magnesium mg/l potassium mg/l sodium mg/l sulfate mg/l alkalinity NA mg/l bicarbonate alkalinity mg/l carbonate alkalinity mg/l - <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 x total dissolved solids NA mg/l 1, , Nitrogen Species ammonia as N mg/l - <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 x Kjeldahl nitrogen mg/l - <1.0 <1.0 <1.0 <1.0 <1.0 x x <1.0 x nitrate as N mg/l x x x x <0.1 <0.1 x x nitrite mg/l - x x x x x x x x x total nitrogen - mg/l - <1.0 <1.0 <1.0 <1.0 <1.0 x x <1.0 x Metals aluminum mg/l 5.0 <0.02 <0.02 < <0.02 x x x antimony mg/l <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x arsenic mg/l 0.01 <0.001 <0.001 <0.001 <0.001 <0.001 < <0.001 x barium mg/l beryllium mg/l <0.001 <0.001 <0.001 <0.001 <0.001 <0.002 <0.002 <0.001 x boron mg/l x x cadmium mg/l <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 x chromium mg/l 0.05 <0.006 <0.006 < <0.006 <0.006 <0.006 <0.006 x cobalt mg/l 0.05 <0.006 <0.006 <0.006 <0.006 <0.006 <0.006 <0.006 <0.006 x copper mg/l 1.0 <0.006 <0.006 <0.006 <0.006 <0.006 <0.006 <0.006 <0.006 x iron mg/l lead mg/l 0.05 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.001 <0.005 x manganese mg/l mercury mg/l < < < < < x x < x molybdenum mg/l <0.008 <0.008 x x nickel mg/l selenium mg/l 0.05 <0.001 <0.001 < <0.001 < x silver mg/l 0.05 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.025 <0.005 x thallium mg/l <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x tin mg/l - <0.01 x x x x x x <0.01 x uranium mg/l x x vanadium mg/l - <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 x zinc mg/l 10.0 <0.02 <0.02 < total organic carbon - mg/l < <1.0 <1.0 <1.0 < phosphate mg/l - <0.5 <0.5 <0.5 <0.5 <0.5 x x <0.5 x sulfide mg/l - <0.1 x x x x x x <0.1 x cyanide mg/l 0.2 <0.01 <0.01 <0.01 <0.02 <0.01 x x <0.02 x perchlorate mg/l - < < x x x x x < x total phenolics 1 - mg/l < < < < < < < < x Polychlorinated Biphenyls (PCBs) mg/l < < < < < x x < x Volatile Organic Compounds 1,1,1,2-Tetrachloroethane mg/l 0.02 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x 1,1,1-Trichloroethane mg/l 0.06 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x 1,1,2,2-Tetrachloroethane mg/l 0.01 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x 1,1,2-Trichloroethane mg/l <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x 1,1-Dichloroethane mg/l <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x 1,1-Dichloroethylene (1,1-Dichloroethene; 1,1-DCE) mg/l <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x 1,1-Dichloropropene mg/l - <0.001 x x x x x x <0.001 x 1,2 Dibromo-3-chloropropane (DBCP) mg/l < < < < < < < < x 1,2,3-Trichlorobenzene mg/l - x x x x x x x x x 1,2,3-Trichloropropane mg/l 0.01 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x 1,2,4-Trichlorobenzene mg/l - <0.01 x x x x x x <0.01 x 1,2-Dichlorobenzene (o-dichlorobenzene) mg/l 0.6 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x 1,2-Dichloroethane (EDC) mg/l <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x 1,2-Dichloropropane mg/l < < < < < < < < x 1,3-Dichlorobenzene (m-dichlorobenzene) mg/l - <0.001 x x x x x x <0.001 x 1,3-Dichloropropane mg/l - <0.001 x x x x x x <0.001 x 1,4-Dichlorobenzene (p-dichlorobenzene) mg/l <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x 2,2-Dichloropropane mg/l - <0.001 x x x x x x <0.001 x 2-Butanone (Methyl Ethyl Ketone) (MEK) mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x 2-Chlorotoluene mg/l - x x x x x x x x x JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

107 APPEIX B Las Cruces Foothills Landfill MW-9 Page 2 of 4 Las Cruces Foothills Landfill monitoring well MW-9 baseline standard constituent CAS Number unit GWPS RESULTS FOR MW-9 average deviation date 12/29/10 5/18/11 8/23/11 11/28/11 12/29/11 12/20/12 6/26/13 12/29/10 to 12/29/10 to 12/29/11 12/29/11 2-Hexanone (Butyl Ketone) mg/l 0.02 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x 4-Chlorotoluene mg/l - x x x x x x x x x 4-Methyl-2-pentanone mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x Acetone mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x Acetonitrile mg/l - <0.1 x x x x x x <0.1 x Acrolein mg/l - <0.1 x x x x x x <0.1 x Acrylonitrile mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x Allyl chloride mg/l - <0.01 x x x x x x <0.01 x Benzene mg/l <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Bis(chloromethyl) ether mg/l - (#) x x x x x x (#) x Bromochloromethane mg/l - <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 x Bromomethane (methyl bromide) mg/l - <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 x Carbon Disulfide mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x Carbon Tetrachloride mg/l <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Chlorobenzene mg/l 0.1 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Chloroethane mg/l - <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 x Chloromethane (methyl chloride) mg/l 0.02 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Chloroprene (2-Chloro-1,3-butadiene) mg/l - <0.05 x x x x x x <0.05 x cis-1,2-dichloroethylene (cis-1,2-dichloroethene) mg/l 0.07 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x cis-1,3-dichloropropene mg/l - <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Dibromomethane (methylene bromide) mg/l - <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Dichlorodifluoromethane mg/l - <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Ethyl methacrylate mg/l - <0.01 x x x x x x <0.01 x Ethylbenzene mg/l 0.75 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Ethylene Dibromide (1,2-Dibromoethane) (EDB) mg/l < < < < < < < < x Hexachlorobutadiene mg/l - <0.01 x x x x x x <0.01 x Isobutyl alcohol mg/l - <0.05 x x x x x x <0.05 x Isopropylbenzene mg/l - x x x x x x x x x Methacrylonitrile mg/l - <0.005 x x x x x x <0.005 x Methyl Iodide (Iodomethane) mg/l - <0.01 x x x x x x <0.01 x Methyl methacrylate mg/l - <0.03 x x x x x x <0.03 x Methylene Chloride mg/l <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x n-butylbenzene mg/l - x x x x x x x x x Propionitrile mg/l - <0.06 x x x x x x <0.06 x Propylbenzene mg/l - x x x x x x x x x sec-butylbenzene mg/l - x x x x x x x x x Styrene mg/l 0.1 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x tert-butyl methyl ether (MTBE) (a) mg/l 0.1 <0.001 x x x x x x <0.001 x tert-butylbenzene mg/l - x x x x x x x x x Tetrachloroethene (PCE) mg/l < < < < < < < < x Tetrahydrofuran (THF) mg/l - x x x x x x x x x Toluene mg/l 0.75 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Total Xylenes (m&p and o) 1 NA mg/l 0.62 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 x trans-1,2-dichloroethene mg/l 0.1 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x trans-1,3-dichloropropene mg/l - <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x trans-1,4-dichloro-2-butene mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x Trichloroethene (TCE) mg/l <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Trichlorofluoromethane mg/l - <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Vinyl acetate mg/l - <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 x Vinyl chloride mg/l < < < < < < < < x Trihalomethanes (THM) Bromodichloromethane mg/l - <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Bromoform mg/l 0.1 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Chloroform mg/l 0.1 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Dibromochloromethane mg/l - <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 x Semi Volatile Organic Compounds 1,2,4,5-Tetrachlorobenzene mg/l - <0.01 x x x x x x <0.01 x 1,2-Diphenylhydrazine mg/l - <0.01 x x x x x x <0.01 x 1,4-Naphthoquinone mg/l - <0.01 x x x x x x <0.01 x 1-Chloronaphthalene NA mg/l - x x x x x x x x x 1-Methylnaphthalene mg/l - <0.01 <0.002 <0.002 <0.002 <0.002 x x <0.01 x 1-Naphthylamine mg/l - <0.01 x x x x x x <0.01 x 2,4,6-Trinitrotoluene (TNT) mg/l - < < < x x x x < x 2,4-Dinitrotoluene (2,4-DNT) mg/l - < < < x x x x < x 2,6-Dinitrotoluene 1 (2,6-DNT) mg/l - < < < x x x x < x 2-Acetylaminofluorene mg/l - <0.01 x x x x x x <0.01 x 2-Chloronaphthalene mg/l - <0.01 x x x x x x <0.01 x 2-Methylnaphthalene mg/l - <0.01 <0.002 <0.002 <0.002 <0.002 x x <0.01 x 2-Naphthylamine mg/l - <0.01 x x x x x x <0.01 x 2-Nitroaniline (o-nitroaniline) mg/l - <0.01 x x x x x x <0.01 x 2-Picoline mg/l - <0.01 x x x x x x <0.01 x 3,3'-Dichlorobenzidine mg/l - <0.01 x x x x x x <0.01 x 3,3'-Dimethylbenzidine mg/l - <0.01 x x x x x x <0.01 x 3-Methylcholanthrene mg/l - <0.01 x x x x x x <0.01 x 3-Nitroaniline (m-nitroaniline) mg/l - <0.01 x x x x x x <0.01 x JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

108 APPEIX B Las Cruces Foothills Landfill MW-9 Page 3 of 4 Las Cruces Foothills Landfill monitoring well MW-9 baseline standard constituent CAS Number unit GWPS RESULTS FOR MW-9 average deviation date 12/29/10 5/18/11 8/23/11 11/28/11 12/29/11 12/20/12 6/26/13 12/29/10 to 12/29/10 to 12/29/11 12/29/11 4-Aminobiphenyl mg/l - <0.01 x x x x x x <0.01 x 4-Bromophenylphenyl ether mg/l - <0.01 x x x x x x <0.01 x 4-Chloroaniline (p-chloroanaline) mg/l - <0.01 x x x x x x <0.01 x 4-Chlorophenylphenyl ether mg/l - <0.01 x x x x x x <0.01 x 4-Nitroaniline (p-nitroaniline) mg/l - <0.01 x x x x x x <0.01 x 5-Nitro-o-toluidine mg/l - <0.01 x x x x x x <0.01 x 7,12-Dimethylbenz (a) anthracene mg/l - <0.01 x x x x x x <0.01 x Acenaphthene mg/l - <0.01 x x x x x x <0.01 x Acenaphthylene mg/l - <0.01 x x x x x x <0.01 x Acetophenone mg/l - <0.01 x x x x x x <0.01 x alpha,alpha-dimethylphenethylamine mg/l - <0.01 x x x x x x <0.01 x Aniline mg/l - <0.01 x x x x x x <0.01 x Anthracene mg/l - <0.01 x x x x x x <0.01 x Benzidine mg/l - <0.01 x x x x x x <0.01 x Benzo (a) anthracene mg/l - < x x x x x x < x Benzo (a) pyrene mg/l < < < < < x x < x Benzo (b) fluoranthene mg/l - < x x x x x x < x Benzo (g,h,i) perylene mg/l - <0.01 x x x x x x <0.01 x Benzo (k) fluoranthene mg/l - < x x x x x x < x Benzoic acid mg/l - x x x x x x x x x Benzyl alcohol mg/l - <0.01 x x x x x x <0.01 x bis (2-Chloroethoxy) methane mg/l - <0.01 x x x x x x <0.01 x bis (2-Chloroethyl) ether mg/l - <0.01 x x x x x x <0.01 x bis (2-Chloroisopropyl) ether (bis (2-chloro-1-methylethyl) ether) mg/l - <0.01 x x x x x x <0.01 x bis (2-Ethylhexyl) phthalate mg/l - <0.005 x x x x x x <0.005 x Butylbenzylphthalate mg/l - <0.01 x x x x x x <0.01 x Carbazole mg/l - <0.01 x x x x x x <0.01 x Chlorobenzilate mg/l - <0.01 x x x x x x <0.01 x Chrysene mg/l - < x x x x x x < x Diallate mg/l - <0.01 x x x x x x <0.01 x Dibenz (a,j) acridine mg/l - x x x x x x x x x Dibenzo (a,h) anthracene mg/l - < x x x x x x < x Dibenzofuran mg/l - <0.01 x x x x x x <0.01 x Diethylene Glycol Monobutyl Ether mg/l - x x x x x x x x x Diethylphthalate mg/l - <0.01 x x x x x x <0.01 x Dimethylphthalate mg/l - <0.01 x x x x x x <0.01 x Di-n-butylphthalate mg/l - <0.01 x x x x x x <0.01 x Di-n-octylphthalate mg/l - <0.01 x x x x x x <0.01 x Diphenylamine mg/l - <0.01 x x x x x x <0.01 x Ethyl methanesulfonate mg/l - <0.01 x x x x x x <0.01 x Fluoranthene mg/l - <0.01 x x x x x x <0.01 x Fluorene mg/l - <0.01 x x x x x x <0.01 x Hexachlorobenzene mg/l - <0.001 x x x x x x <0.001 x Hexachlorocyclopentadiene mg/l - <0.01 x x x x x x <0.01 x Hexachloroethane mg/l - <0.01 x x x x x x <0.01 x Hexachloropropene mg/l - <0.01 x x x x x x <0.01 x HMX mg/l < < x x x x < x Indeno (1,2,3-cd) pyrene mg/l - < x x x x x x < x Isophorone mg/l - <0.01 x x x x x x <0.01 x Isosafrole mg/l - <0.01 x x x x x x <0.01 x m-dinitrobenzene (1,3-DNB) mg/l - < < < x x x x < x Methapyrilene mg/l - <0.01 x x x x x x <0.01 x Methyl methanesulfonate mg/l - <0.01 x x x x x x <0.01 x Naphthalene mg/l 0.03 <0.01 <0.002 <0.002 <0.002 <0.002 x x <0.01 x Nitrobenzene mg/l - <0.01 < < x x x x <0.01 x n-nitrosodiethylamine mg/l - <0.01 x x x x x x <0.01 x n-nitrosodimethylamine mg/l - <0.01 x x x x x x <0.01 x n-nitrosodi-n-butylamine mg/l - <0.01 x x x x x x <0.01 x n-nitrosodinpropylamine mg/l - <0.010 x x x x x x <0.01 x n-nitrosodiphenylamine mg/l - <0.002 x x x x x x <0.002 x n-nitrosomethylethylamine mg/l - <0.002 x x x x x x <0.002 x n-nitrosopiperidine mg/l - <0.01 x x x x x x <0.01 x n-nitrosopyrrolidine mg/l - <0.01 x x x x x x <0.01 x o-toluidine mg/l - <0.002 x x x x x x <0.002 x p-(dimethylamino) azobenzene mg/l - <0.01 x x x x x x <0.01 x Pentachlorobenzene mg/l - <0.01 x x x x x x <0.01 x Pentachloronitrobenzene mg/l - <0.01 x x x x x x <0.01 x Phenacetin mg/l - <0.01 x x x x x x <0.01 x Phenanthrene mg/l - <0.01 x x x x x x <0.01 x p-phenylenediamine mg/l - <0.01 x x x x x x <0.01 x Pronamide mg/l - <0.01 x x x x x x <0.01 x Pyrene mg/l - <0.01 x x x x x x <0.01 x Pyridine mg/l - <0.01 x x x x x x <0.01 x RDX mg/l < < x x x x < x Safrole mg/l - <0.01 x x x x x x <0.01 x JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

109 APPEIX B Las Cruces Foothills Landfill MW-9 Page 4 of 4 Las Cruces Foothills Landfill monitoring well MW-9 baseline standard constituent CAS Number unit GWPS RESULTS FOR MW-9 average deviation date 12/29/10 5/18/11 8/23/11 11/28/11 12/29/11 12/20/12 6/26/13 12/29/10 to 12/29/10 to 12/29/11 12/29/11 sym-trinitrobenzene 1 (1,3,5-TNB) mg/l - < < < x x x x < x Semi Volatile Organic Compounds - Phenolics 2,3,4,6-Tetrachlorophenol mg/l - <0.01 x x x x x x <0.01 x 2,4,5-Trichlorophenol mg/l - <0.01 x x x x x x <0.01 x 2,4,6-Trichlorophenol mg/l - <0.01 x x x x x x <0.01 x 2,4-Dichlorophenol mg/l - <0.01 x x x x x x <0.01 x 2,4-Dimethylphenol mg/l - <0.01 x x x x x x <0.01 x 2,4-Dinitrophenol mg/l - <0.01 x x x x x x <0.01 x 2,6-Dichlorophenol mg/l - <0.01 x x x x x x <0.01 x 2-Chlorophenol mg/l - <0.01 x x x x x x <0.01 x 2-Methylphenol (o-cresol) mg/l - <0.01 x x x x x x <0.01 x 2-Nitrophenol (o-nitrophenol) mg/l - <0.01 x x x x x x <0.01 x 3-Methylphenol/4-Methylphenol (m&p-cresol) / mg/l - <0.01 x x x x x x <0.01 x 4,6-Dinitro-2-methylphenol (4,6-Dinitro-o-cresol) mg/l - <0.01 x x x x x x <0.01 x p-chloro-m-cresol (4-Chloro-3-methylphenol) mg/l - <0.005 x x x x x x <0.005 x 4-Nitrophenol (p-nitrophenol) mg/l - <0.01 x x x x x x <0.01 x Pentachlorophenol mg/l - <0.01 x x x x x x <0.01 x Phenol 1 (a) mg/l <0.01 x x x x x x <0.01 x Radium 226 and 228 NA pci/l x x Ra-226, total NA pci/l x x Ra-228 1, total NA pci/l x x Chlorinated Pesticides 4,4'-DDD (p,p'-ddd) mg/l - <0.001 x x x x x x <0.01 x 4,4'-DDE (p,p'-dde) mg/l - <0.001 x x x x x x < x 4,4'-DDT (p,p'-ddt) mg/l - <0.001 x x x x x x < x aldrin mg/l - <0.01 x x x x x x < x alpha-bhc mg/l - < x x x x x x < x alpha-chlordane mg/l - x x x x x x x x x beta-bhc mg/l - < x x x x x x < x Chlordane mg/l <0.005 x x x x x x <0.005 x delta-bhc mg/l - < x x x x x x < x Dieldrin mg/l - <0.001 x x x x x x <0.001 x Endosulfan I (alpha-endosulfan) mg/l - <0.001 x x x x x x <0.001 x Endosulfan II (beta-endosulfan) mg/l - <0.001 x x x x x x <0.001 x Endosulfan sulfate mg/l - <0.001 x x x x x x <0.001 x Endrin aldehyde mg/l - <0.001 x x x x x x <0.001 x Endrin ketone mg/l - x x x x x x x x x Endrin mg/l - <0.001 x x x x x x <0.001 x gamma-bhc mg/l - < x x x x x x < x gamma-chlordane mg/l - x x x x x x x x x Heptachlor epoxide mg/l - <0.001 x x x x x x <0.001 x Heptachlor mg/l - <0.001 x x x x x x <0.001 x Isodrin mg/l - <0.01 x x x x x x <0.01 x Kepone mg/l - <0.01 x x x x x x <0.01 x Methoxychlor mg/l - <0.01 x x x x x x <0.01 x Toxaphene mg/l - <0.001 x x x x x x <0.001 x Polychlorinated Biphenyls (PCBs) 1 Arochlor mg/l - < < < < < x x < x Arochlor mg/l - < < < < < x x < x Arochlor mg/l - < < < < < x x < x Arochlor mg/l - < < < < < x x < x Arochlor mg/l - < < < < < x x < x Arochlor mg/l - < < < < < x x < x Arochlor mg/l - < < < < < x x < x Other Pesticides and Herbicides 1 2,3,7,8-TCDD ng/l 0.03 < x x x x x x < x 2,4,5-T mg/l - < x x x x x x < x 2,4-Dichlorophenoxyacetic acid (2,4-D) mg/l - < x x x x x x < x Dimethoate mg/l - <0.01 x x x x x x <0.01 x Dinoseb mg/l - < x x x x x x < x Disulfoton mg/l - <0.01 x x x x x x <0.01 x Famphur mg/l - <0.005 x x x x x x <0.005 x Methyl parathion mg/l - <0.01 x x x x x x <0.01 x o,o,o-triethyl phosphorothioate mg/l - <0.01 x x x x x x <0.01 x Parathion (Ethyl) mg/l - <0.01 x x x x x x <0.01 x Phorate mg/l - <0.01 x x x x x x <0.01 x Silvex 1 (2,4,5-TP) mg/l - < x x x x x x < x o,o-diethyl o-2pyrazinyl phosphorothioate (Thionazin) mg/l - <0.01 x x x x x x <0.01 x * baseline averages and standard deviations are based on 1999 and 2000 data only as per requirements in EPA, Subpart 803., Ground Water Sampling and Analysis, hazardous x parameter not analyzed (#) Scanned for and not detected, breaks down almost immediately in water. JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

110 JSAI Appendix C. Copies of laboratory reports for the June 25 and 26, 2013, and December 19, 2013, sampling events JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

111 JSAI Laboratory Results Sample Date (Lab Report Date ) JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

112 Hall Environmental Analysis Laboratory 4901 Hawkins NE Albuquerque, NM TEL: FAX: Website: July 24, 2013 Joshua Rosenblatt City of Las Cruces PO Box Las Cruces, NM TEL: (575) FAX (575) RE: City of Las Cruces Foothills Landfill Monitoring Wells OrderNo.: 1306B08 Dear Joshua Rosenblatt: Hall Environmental Analysis Laboratory received 4 sample(s) on 6/26/2013 for the analyses presented in the following report. This report is a revised report and it replaces the original report issued July 15, These were analyzed according to EPA procedures or equivalent. To access our accredited tests please go to or the state specific web sites. See the sample checklist and/or the Chain of Custody for information regarding the sample receipt temperature and preservation. Data qualifiers or a narrative will be provided if the sample analysis or analytical quality control parameters require a flag. All samples are reported as received unless otherwise indicated. Please don't hesitate to contact HEAL for any additional information or clarifications. Sincerely, Andy Freeman Laboratory Manager 4901 Hawkins NE Albuquerque, NM 87109

113 Hall Environmental Analysis Laboratory, Inc. CLIENT: City of Las Cruces Project: City of Las Cruces Foothills Landfill Mo Lab ID: 1306B Matrix: AQUEOUS Analytical Report Lab Order 1306B08 Date Reported: 7/24/2013 Client Sample ID: MW-1 Collection Date: 6/25/ :17:00 AM Received Date: 6/26/2013 9:00:00 AM Analyses Result RL Qual Units DF Date Analyzed Batch EPA METHOD 504.1: EDB/DBCP Analyst: LRW 1,2-Dibromo-3-chloropropane 0.10 µg/l 1 7/1/ :46:13 AM ,2-Dibromoethane µg/l 1 7/1/ :46:13 AM 8176 EPA METHOD 300.0: ANIONS Analyst: JRR Chloride mg/l 20 6/26/ :20:19 PM R11606 Nitrogen, Nitrate (As N) 0.10 mg/l 1 6/26/ :43:06 PM R11606 Sulfate mg/l 1 6/26/ :43:06 PM R11606 EPA METHOD 200.7: METALS Analyst: JLF Barium mg/l 1 7/9/ :44:52 PM R11805 Beryllium mg/l 1 7/9/ :44:52 PM R11805 Cadmium mg/l 1 7/9/ :44:52 PM R11805 Calcium mg/l 1 7/9/ :44:52 PM R11805 Chromium mg/l 1 7/9/ :44:52 PM R11805 Cobalt mg/l 1 7/9/ :44:52 PM R11805 Copper mg/l 1 7/9/ :44:52 PM R11805 Iron mg/l 1 7/9/ :44:52 PM R11805 Magnesium mg/l 1 7/9/ :44:52 PM R11805 Manganese mg/l 1 7/9/ :44:52 PM R11805 Nickel mg/l 1 7/9/ :44:52 PM R11805 Potassium mg/l 1 7/9/ :44:52 PM R11805 Silver mg/l 1 7/9/ :44:52 PM R11805 Sodium mg/l 1 7/9/ :44:52 PM R11805 Vanadium mg/l 1 7/9/ :44:52 PM R11805 Zinc mg/l 1 7/9/ :44:52 PM R11805 EPA 200.8: METALS Analyst: DBD Antimony mg/l 1 7/10/ :29:55 PM R11836 Arsenic mg/l 1 7/5/ :20:10 AM R11758 Lead mg/l 1 7/5/ :20:10 AM R11758 Selenium mg/l 1 7/5/ :20:10 AM R11758 Thallium mg/l 1 7/5/ :20:10 AM R11758 EPA METHOD 8260B: VOLATILES, TABLE I Analyst: CWS 1,2-Dibromo-3-chloropropane 2.0 µg/l 1 6/28/2013 3:10:19 PM R ,2-Dibromoethane (EDB) 1.0 µg/l 1 6/28/2013 3:10:19 PM R11660 Methyl tert-butyl ether (MTBE) 1.0 µg/l 1 6/28/2013 3:10:19 PM R11660 Acetone 10 µg/l 1 6/28/2013 3:10:19 PM R11660 Acrylonitrile 10 µg/l 1 6/28/2013 3:10:19 PM R11660 Benzene 1.0 µg/l 1 6/28/2013 3:10:19 PM R11660 Bromochloromethane 2.0 µg/l 1 6/28/2013 3:10:19 PM R11660 Bromodichloromethane 1.0 µg/l 1 6/28/2013 3:10:19 PM R11660 Refer to the QC Summary report and sample login checklist for flagged QC data and preservation information. Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit Page 1 of 28 O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit

114 Hall Environmental Analysis Laboratory, Inc. CLIENT: City of Las Cruces Project: City of Las Cruces Foothills Landfill Mo Lab ID: 1306B Matrix: AQUEOUS Analytical Report Lab Order 1306B08 Date Reported: 7/24/2013 Client Sample ID: MW-1 Collection Date: 6/25/ :17:00 AM Received Date: 6/26/2013 9:00:00 AM Analyses Result RL Qual Units DF Date Analyzed Batch EPA METHOD 8260B: VOLATILES, TABLE I Bromoform Bromomethane 2-Butanone Carbon disulfide Carbon Tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-dce cis-1,3-dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane 1,2-Dichlorobenzene 1,4-Dichlorobenzene 1,2-Dichloroethane (EDC) 1,1-Dichloroethane 1,1-Dichloroethene 1,2-Dichloropropane Ethylbenzene 2-Hexanone Iodomethane 4-Methyl-2-pentanone Methylene Chloride Styrene 1,1,1,2-Tetrachloroethane 1,1,2,2-Tetrachloroethane Tetrachloroethene (PCE) Toluene trans-1,2-dce trans-1,3-dichloropropene trans-1,4-dichloro-2-butene 1,1,1-Trichloroethane 1,1,2-Trichloroethane Trichloroethene (TCE) Trichlorofluoromethane 1,2,3-Trichloropropane Vinyl acetate Vinyl chloride Analyst: CWS 1.0 µg/l 1 6/28/2013 3:10:19 PM R µg/l 1 6/28/2013 3:10:19 PM R µg/l 1 6/28/2013 3:10:19 PM R µg/l 1 6/28/2013 3:10:19 PM R µg/l 1 6/28/2013 3:10:19 PM R µg/l 1 6/28/2013 3:10:19 PM R µg/l 1 6/28/2013 3:10:19 PM R µg/l 1 6/28/2013 3:10:19 PM R µg/l 1 6/28/2013 3:10:19 PM R µg/l 1 6/28/2013 3:10:19 PM R µg/l 1 6/28/2013 3:10:19 PM R µg/l 1 6/28/2013 3:10:19 PM R µg/l 1 6/28/2013 3:10:19 PM R µg/l 1 6/28/2013 3:10:19 PM R µg/l 1 6/28/2013 3:10:19 PM R µg/l 1 6/28/2013 3:10:19 PM R µg/l 1 6/28/2013 3:10:19 PM R µg/l 1 6/28/2013 3:10:19 PM R µg/l 1 6/28/2013 3:10:19 PM R µg/l 1 6/28/2013 3:10:19 PM R µg/l 1 6/28/2013 3:10:19 PM R µg/l 1 6/28/2013 3:10:19 PM R µg/l 1 6/28/2013 3:10:19 PM R µg/l 1 6/28/2013 3:10:19 PM R µg/l 1 6/28/2013 3:10:19 PM R µg/l 1 6/28/2013 3:10:19 PM R µg/l 1 6/28/2013 3:10:19 PM R µg/l 1 6/28/2013 3:10:19 PM R µg/l 1 6/28/2013 3:10:19 PM R µg/l 1 6/28/2013 3:10:19 PM R µg/l 1 6/28/2013 3:10:19 PM R µg/l 1 6/28/2013 3:10:19 PM R µg/l 1 6/28/2013 3:10:19 PM R µg/l 1 6/28/2013 3:10:19 PM R µg/l 1 6/28/2013 3:10:19 PM R µg/l 1 6/28/2013 3:10:19 PM R µg/l 1 6/28/2013 3:10:19 PM R µg/l 1 6/28/2013 3:10:19 PM R µg/l 1 6/28/2013 3:10:19 PM R µg/l 1 6/28/2013 3:10:19 PM R11660 Refer to the QC Summary report and sample login checklist for flagged QC data and preservation information. Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit Page 2 of 28 O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit

115 Hall Environmental Analysis Laboratory, Inc. CLIENT: City of Las Cruces Project: City of Las Cruces Foothills Landfill Mo Lab ID: 1306B Matrix: AQUEOUS Analytical Report Lab Order 1306B08 Date Reported: 7/24/2013 Client Sample ID: MW-1 Collection Date: 6/25/ :17:00 AM Received Date: 6/26/2013 9:00:00 AM Analyses Result RL Qual Units DF Date Analyzed Batch EPA METHOD 8260B: VOLATILES, TABLE I Xylenes, Total Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromofluorobenzene Surr: Dibromofluoromethane Surr: Toluene-d8 TOTAL PHENOLICS BY SW µg/l 1 6/28/2013 3:10:19 PM Analyst: CWS R %REC 1 6/28/2013 3:10:19 PM R %REC 1 6/28/2013 3:10:19 PM R %REC 1 6/28/2013 3:10:19 PM R %REC 1 6/28/2013 3:10:19 PM R11660 Analyst: SCC Phenolics, Total Recoverable 2.5 µg/l 1 7/9/ EPA METHOD 9060 TOC Total Organic Carbon SM2510B: SPECIFIC COUCTANCE Conductivity SM 4500 NH3: AMMONIA Nitrogen, Ammonia SM4500-H+B: PH Analyst: LRW mg/l 1 7/8/2013 4:45:13 PM R11792 Analyst: JML µmhos/cm 1 6/26/2013 7:51:33 PM R mg/l 1 Analyst: TMG 6/27/ :30:00 PM R11604 Analyst: JML ph H ph units 1 6/26/2013 7:51:33 PM R11593 SM2320B: ALKALINITY Bicarbonate (As CaCO3) Carbonate (As CaCO3) Total Alkalinity (as CaCO3) SM2540C MOD: TOTAL DISSOLVED SOLIDS Total Dissolved Solids Analyst: JML mg/l CaCO3 1 6/26/2013 7:51:33 PM R mg/l CaCO3 1 6/26/2013 7:51:33 PM R mg/l CaCO3 1 6/26/2013 7:51:33 PM R11593 Analyst: KS mg/l 1 6/30/2013 4:41:00 PM 8151 Refer to the QC Summary report and sample login checklist for flagged QC data and preservation information. Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit Page 3 of 28 O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit

116 Hall Environmental Analysis Laboratory, Inc. CLIENT: City of Las Cruces Project: City of Las Cruces Foothills Landfill Mo Lab ID: 1306B Matrix: AQUEOUS Analytical Report Lab Order 1306B08 Date Reported: 7/24/2013 Client Sample ID: MW-2 Collection Date: 6/25/ :20:00 AM Received Date: 6/26/2013 9:00:00 AM Analyses Result RL Qual Units DF Date Analyzed Batch EPA METHOD 504.1: EDB/DBCP Analyst: LRW 1,2-Dibromo-3-chloropropane 0.10 µg/l 1 7/1/ :00:01 PM ,2-Dibromoethane µg/l 1 7/1/ :00:01 PM 8176 EPA METHOD 300.0: ANIONS Analyst: JRR Chloride mg/l 1 6/26/ :32:44 PM R11606 Nitrogen, Nitrate (As N) mg/l 1 6/26/ :32:44 PM R11606 Sulfate mg/l 1 6/26/ :32:44 PM R11606 EPA METHOD 200.7: METALS Analyst: JLF Barium mg/l 1 7/9/2013 1:06:00 PM R11805 Beryllium mg/l 1 7/9/2013 1:06:00 PM R11805 Cadmium mg/l 1 7/9/2013 1:06:00 PM R11805 Calcium mg/l 1 7/9/2013 1:06:00 PM R11805 Chromium mg/l 1 7/9/2013 1:06:00 PM R11805 Cobalt mg/l 1 7/9/2013 1:06:00 PM R11805 Copper mg/l 1 7/9/2013 1:06:00 PM R11805 Iron mg/l 1 7/9/2013 1:06:00 PM R11805 Magnesium mg/l 1 7/9/2013 1:06:00 PM R11805 Manganese mg/l 1 7/9/2013 1:06:00 PM R11805 Nickel mg/l 1 7/9/2013 1:06:00 PM R11805 Potassium mg/l 1 7/9/2013 1:06:00 PM R11805 Silver mg/l 1 7/9/2013 1:06:00 PM R11805 Sodium mg/l 1 7/9/2013 1:06:00 PM R11805 Vanadium mg/l 1 7/9/2013 1:06:00 PM R11805 Zinc mg/l 1 7/9/2013 1:06:00 PM R11805 EPA 200.8: METALS Analyst: DBD Antimony mg/l 1 7/10/ :34:13 PM R11836 Arsenic mg/l 1 7/5/ :24:29 AM R11758 Lead mg/l 1 7/5/ :24:29 AM R11758 Selenium mg/l 1 7/5/ :24:29 AM R11758 Thallium mg/l 1 7/5/ :24:29 AM R11758 EPA METHOD 8260B: VOLATILES, TABLE I Analyst: CWS 1,2-Dibromo-3-chloropropane 2.0 µg/l 1 6/28/2013 4:37:17 PM R ,2-Dibromoethane (EDB) 1.0 µg/l 1 6/28/2013 4:37:17 PM R11660 Methyl tert-butyl ether (MTBE) 1.0 µg/l 1 6/28/2013 4:37:17 PM R11660 Acetone 10 µg/l 1 6/28/2013 4:37:17 PM R11660 Acrylonitrile 10 µg/l 1 6/28/2013 4:37:17 PM R11660 Benzene 1.0 µg/l 1 6/28/2013 4:37:17 PM R11660 Bromochloromethane 2.0 µg/l 1 6/28/2013 4:37:17 PM R11660 Bromodichloromethane 1.0 µg/l 1 6/28/2013 4:37:17 PM R11660 Refer to the QC Summary report and sample login checklist for flagged QC data and preservation information. Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit Page 4 of 28 O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit

117 Hall Environmental Analysis Laboratory, Inc. CLIENT: City of Las Cruces Project: City of Las Cruces Foothills Landfill Mo Lab ID: 1306B Matrix: AQUEOUS Analytical Report Lab Order 1306B08 Date Reported: 7/24/2013 Client Sample ID: MW-2 Collection Date: 6/25/ :20:00 AM Received Date: 6/26/2013 9:00:00 AM Analyses Result RL Qual Units DF Date Analyzed Batch EPA METHOD 8260B: VOLATILES, TABLE I Bromoform Bromomethane 2-Butanone Carbon disulfide Carbon Tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-dce cis-1,3-dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane 1,2-Dichlorobenzene 1,4-Dichlorobenzene 1,2-Dichloroethane (EDC) 1,1-Dichloroethane 1,1-Dichloroethene 1,2-Dichloropropane Ethylbenzene 2-Hexanone Iodomethane 4-Methyl-2-pentanone Methylene Chloride Styrene 1,1,1,2-Tetrachloroethane 1,1,2,2-Tetrachloroethane Tetrachloroethene (PCE) Toluene trans-1,2-dce trans-1,3-dichloropropene trans-1,4-dichloro-2-butene 1,1,1-Trichloroethane 1,1,2-Trichloroethane Trichloroethene (TCE) Trichlorofluoromethane 1,2,3-Trichloropropane Vinyl acetate Vinyl chloride Analyst: CWS 1.0 µg/l 1 6/28/2013 4:37:17 PM R µg/l 1 6/28/2013 4:37:17 PM R µg/l 1 6/28/2013 4:37:17 PM R µg/l 1 6/28/2013 4:37:17 PM R µg/l 1 6/28/2013 4:37:17 PM R µg/l 1 6/28/2013 4:37:17 PM R µg/l 1 6/28/2013 4:37:17 PM R µg/l 1 6/28/2013 4:37:17 PM R µg/l 1 6/28/2013 4:37:17 PM R µg/l 1 6/28/2013 4:37:17 PM R µg/l 1 6/28/2013 4:37:17 PM R µg/l 1 6/28/2013 4:37:17 PM R µg/l 1 6/28/2013 4:37:17 PM R µg/l 1 6/28/2013 4:37:17 PM R µg/l 1 6/28/2013 4:37:17 PM R µg/l 1 6/28/2013 4:37:17 PM R µg/l 1 6/28/2013 4:37:17 PM R µg/l 1 6/28/2013 4:37:17 PM R µg/l 1 6/28/2013 4:37:17 PM R µg/l 1 6/28/2013 4:37:17 PM R µg/l 1 6/28/2013 4:37:17 PM R µg/l 1 6/28/2013 4:37:17 PM R µg/l 1 6/28/2013 4:37:17 PM R µg/l 1 6/28/2013 4:37:17 PM R µg/l 1 6/28/2013 4:37:17 PM R µg/l 1 6/28/2013 4:37:17 PM R µg/l 1 6/28/2013 4:37:17 PM R µg/l 1 6/28/2013 4:37:17 PM R µg/l 1 6/28/2013 4:37:17 PM R µg/l 1 6/28/2013 4:37:17 PM R µg/l 1 6/28/2013 4:37:17 PM R µg/l 1 6/28/2013 4:37:17 PM R µg/l 1 6/28/2013 4:37:17 PM R µg/l 1 6/28/2013 4:37:17 PM R µg/l 1 6/28/2013 4:37:17 PM R µg/l 1 6/28/2013 4:37:17 PM R µg/l 1 6/28/2013 4:37:17 PM R µg/l 1 6/28/2013 4:37:17 PM R µg/l 1 6/28/2013 4:37:17 PM R µg/l 1 6/28/2013 4:37:17 PM R11660 Refer to the QC Summary report and sample login checklist for flagged QC data and preservation information. Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit Page 5 of 28 O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit

118 Hall Environmental Analysis Laboratory, Inc. CLIENT: City of Las Cruces Project: City of Las Cruces Foothills Landfill Mo Lab ID: 1306B Matrix: AQUEOUS Analytical Report Lab Order 1306B08 Date Reported: 7/24/2013 Client Sample ID: MW-2 Collection Date: 6/25/ :20:00 AM Received Date: 6/26/2013 9:00:00 AM Analyses Result RL Qual Units DF Date Analyzed Batch EPA METHOD 8260B: VOLATILES, TABLE I Xylenes, Total Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromofluorobenzene Surr: Dibromofluoromethane Surr: Toluene-d8 TOTAL PHENOLICS BY SW µg/l 1 6/28/2013 4:37:17 PM Analyst: CWS R %REC 1 6/28/2013 4:37:17 PM R %REC 1 6/28/2013 4:37:17 PM R %REC 1 6/28/2013 4:37:17 PM R %REC 1 6/28/2013 4:37:17 PM R11660 Analyst: SCC Phenolics, Total Recoverable 2.5 µg/l 1 7/9/ EPA METHOD 9060 TOC Total Organic Carbon SM2510B: SPECIFIC COUCTANCE Conductivity SM 4500 NH3: AMMONIA Nitrogen, Ammonia SM4500-H+B: PH 1.0 mg/l 1 7/8/2013 5:03:04 PM Analyst: LRW R11792 Analyst: JML µmhos/cm 1 6/26/2013 7:59:48 PM R mg/l 1 Analyst: TMG 6/27/ :30:00 PM R11604 Analyst: JML ph H ph units 1 6/26/2013 7:59:48 PM R11593 SM2320B: ALKALINITY Bicarbonate (As CaCO3) Carbonate (As CaCO3) Total Alkalinity (as CaCO3) SM2540C MOD: TOTAL DISSOLVED SOLIDS Total Dissolved Solids Analyst: JML mg/l CaCO3 1 6/26/2013 7:59:48 PM R mg/l CaCO3 1 6/26/2013 7:59:48 PM R mg/l CaCO3 1 6/26/2013 7:59:48 PM R11593 Analyst: KS mg/l 1 6/30/2013 4:41:00 PM 8151 Refer to the QC Summary report and sample login checklist for flagged QC data and preservation information. Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit Page 6 of 28 O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit

119 Hall Environmental Analysis Laboratory, Inc. CLIENT: City of Las Cruces Project: City of Las Cruces Foothills Landfill Mo Lab ID: 1306B Matrix: AQUEOUS Analytical Report Lab Order 1306B08 Date Reported: 7/24/2013 Client Sample ID: MW-3 Collection Date: 6/25/ :43:00 AM Received Date: 6/26/2013 9:00:00 AM Analyses Result RL Qual Units DF Date Analyzed Batch EPA METHOD 504.1: EDB/DBCP Analyst: LRW 1,2-Dibromo-3-chloropropane 0.10 µg/l 1 7/1/ :41:11 PM ,2-Dibromoethane µg/l 1 7/1/ :41:11 PM 8176 EPA METHOD 300.0: ANIONS Analyst: JRR Chloride mg/l 1 6/27/ :22:23 AM R11606 Nitrogen, Nitrate (As N) mg/l 1 6/27/ :22:23 AM R11606 Sulfate mg/l 1 6/27/ :22:23 AM R11606 EPA METHOD 200.7: METALS Analyst: JLF Barium mg/l 1 7/9/2013 1:08:26 PM R11805 Beryllium mg/l 1 7/9/2013 1:08:26 PM R11805 Cadmium mg/l 1 7/9/2013 1:08:26 PM R11805 Calcium mg/l 1 7/9/2013 1:08:26 PM R11805 Chromium mg/l 1 7/9/2013 1:08:26 PM R11805 Cobalt mg/l 1 7/9/2013 1:08:26 PM R11805 Copper mg/l 1 7/9/2013 1:08:26 PM R11805 Iron mg/l 1 7/9/2013 1:08:26 PM R11805 Magnesium mg/l 1 7/9/2013 1:08:26 PM R11805 Manganese mg/l 1 7/9/2013 1:08:26 PM R11805 Nickel mg/l 1 7/9/2013 1:08:26 PM R11805 Potassium mg/l 1 7/9/2013 1:08:26 PM R11805 Silver mg/l 1 7/9/2013 1:08:26 PM R11805 Sodium mg/l 1 7/9/2013 1:08:26 PM R11805 Vanadium mg/l 1 7/9/2013 1:08:26 PM R11805 Zinc mg/l 1 7/9/2013 1:08:26 PM R11805 EPA 200.8: METALS Analyst: DBD Antimony mg/l 1 7/10/ :38:32 PM R11836 Arsenic mg/l 1 7/5/ :28:47 AM R11758 Lead mg/l 1 7/5/ :28:47 AM R11758 Selenium mg/l 1 7/5/ :28:47 AM R11758 Thallium mg/l 1 7/5/ :28:47 AM R11758 EPA METHOD 8260B: VOLATILES, TABLE I Analyst: CWS 1,2-Dibromo-3-chloropropane 2.0 µg/l 1 6/28/2013 5:06:14 PM R ,2-Dibromoethane (EDB) 1.0 µg/l 1 6/28/2013 5:06:14 PM R11660 Methyl tert-butyl ether (MTBE) 1.0 µg/l 1 6/28/2013 5:06:14 PM R11660 Acetone 10 µg/l 1 6/28/2013 5:06:14 PM R11660 Acrylonitrile 10 µg/l 1 6/28/2013 5:06:14 PM R11660 Benzene 1.0 µg/l 1 6/28/2013 5:06:14 PM R11660 Bromochloromethane 2.0 µg/l 1 6/28/2013 5:06:14 PM R11660 Bromodichloromethane 1.0 µg/l 1 6/28/2013 5:06:14 PM R11660 Refer to the QC Summary report and sample login checklist for flagged QC data and preservation information. Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit Page 7 of 28 O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit

120 Hall Environmental Analysis Laboratory, Inc. CLIENT: City of Las Cruces Project: City of Las Cruces Foothills Landfill Mo Lab ID: 1306B Matrix: AQUEOUS Analytical Report Lab Order 1306B08 Date Reported: 7/24/2013 Client Sample ID: MW-3 Collection Date: 6/25/ :43:00 AM Received Date: 6/26/2013 9:00:00 AM Analyses Result RL Qual Units DF Date Analyzed Batch EPA METHOD 8260B: VOLATILES, TABLE I Analyst: CWS Bromoform Bromomethane 2-Butanone Carbon disulfide Carbon Tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-dce cis-1,3-dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane 1,2-Dichlorobenzene 1,4-Dichlorobenzene 1,2-Dichloroethane (EDC) 1,1-Dichloroethane 1,1-Dichloroethene 1,2-Dichloropropane Ethylbenzene 2-Hexanone Iodomethane 4-Methyl-2-pentanone Methylene Chloride Styrene 1,1,1,2-Tetrachloroethane 1,1,2,2-Tetrachloroethane Tetrachloroethene (PCE) Toluene trans-1,2-dce trans-1,3-dichloropropene trans-1,4-dichloro-2-butene 1,1,1-Trichloroethane 1,1,2-Trichloroethane Trichloroethene (TCE) Trichlorofluoromethane 1,2,3-Trichloropropane Vinyl acetate Vinyl chloride 1.0 µg/l µg/l 1 10 µg/l 1 10 µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l 1 10 µg/l 1 10 µg/l 1 10 µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l 1 10 µg/l µg/l µg/l µg/l µg/l µg/l 1 10 µg/l µg/l 1 6/28/2013 5:06:14 PM 6/28/2013 5:06:14 PM 6/28/2013 5:06:14 PM 6/28/2013 5:06:14 PM 6/28/2013 5:06:14 PM 6/28/2013 5:06:14 PM 6/28/2013 5:06:14 PM 6/28/2013 5:06:14 PM 6/28/2013 5:06:14 PM 6/28/2013 5:06:14 PM 6/28/2013 5:06:14 PM 6/28/2013 5:06:14 PM 6/28/2013 5:06:14 PM 6/28/2013 5:06:14 PM 6/28/2013 5:06:14 PM 6/28/2013 5:06:14 PM 6/28/2013 5:06:14 PM 6/28/2013 5:06:14 PM 6/28/2013 5:06:14 PM 6/28/2013 5:06:14 PM 6/28/2013 5:06:14 PM 6/28/2013 5:06:14 PM 6/28/2013 5:06:14 PM 6/28/2013 5:06:14 PM 6/28/2013 5:06:14 PM 6/28/2013 5:06:14 PM 6/28/2013 5:06:14 PM 6/28/2013 5:06:14 PM 6/28/2013 5:06:14 PM 6/28/2013 5:06:14 PM 6/28/2013 5:06:14 PM 6/28/2013 5:06:14 PM 6/28/2013 5:06:14 PM 6/28/2013 5:06:14 PM 6/28/2013 5:06:14 PM 6/28/2013 5:06:14 PM 6/28/2013 5:06:14 PM 6/28/2013 5:06:14 PM 6/28/2013 5:06:14 PM 6/28/2013 5:06:14 PM R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 Refer to the QC Summary report and sample login checklist for flagged QC data and preservation information. Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit Page 8 of 28 O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit

121 Hall Environmental Analysis Laboratory, Inc. CLIENT: City of Las Cruces Project: City of Las Cruces Foothills Landfill Mo Lab ID: 1306B Matrix: AQUEOUS Analytical Report Lab Order 1306B08 Date Reported: 7/24/2013 Client Sample ID: MW-3 Collection Date: 6/25/ :43:00 AM Received Date: 6/26/2013 9:00:00 AM Analyses Result RL Qual Units DF Date Analyzed Batch EPA METHOD 8260B: VOLATILES, TABLE I Xylenes, Total Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromofluorobenzene Surr: Dibromofluoromethane Surr: Toluene-d8 TOTAL PHENOLICS BY SW µg/l 1 6/28/2013 5:06:14 PM Analyst: CWS R %REC 1 6/28/2013 5:06:14 PM R %REC 1 6/28/2013 5:06:14 PM R %REC 1 6/28/2013 5:06:14 PM R %REC 1 6/28/2013 5:06:14 PM R11660 Analyst: SCC Phenolics, Total Recoverable 2.5 µg/l 1 7/9/ EPA METHOD 9060 TOC Total Organic Carbon SM2510B: SPECIFIC COUCTANCE Conductivity SM 4500 NH3: AMMONIA Nitrogen, Ammonia SM4500-H+B: PH 1.0 mg/l 1 7/8/2013 5:19:26 PM Analyst: LRW R11792 Analyst: JML µmhos/cm 1 6/26/2013 8:09:56 PM R mg/l 1 Analyst: TMG 6/27/ :30:00 PM R11604 Analyst: JML ph H ph units 1 6/26/2013 8:09:56 PM R11593 SM2320B: ALKALINITY Bicarbonate (As CaCO3) Carbonate (As CaCO3) Total Alkalinity (as CaCO3) SM2540C MOD: TOTAL DISSOLVED SOLIDS Total Dissolved Solids Analyst: JML mg/l CaCO3 1 6/26/2013 8:09:56 PM R mg/l CaCO3 1 6/26/2013 8:09:56 PM R mg/l CaCO3 1 6/26/2013 8:09:56 PM R11593 Analyst: KS mg/l 1 6/30/2013 4:41:00 PM 8151 Refer to the QC Summary report and sample login checklist for flagged QC data and preservation information. Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit Page 9 of 28 O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit

122 Hall Environmental Analysis Laboratory, Inc. CLIENT: City of Las Cruces Project: City of Las Cruces Foothills Landfill Mo Lab ID: 1306B Matrix: AQUEOUS Analytical Report Lab Order 1306B08 Date Reported: 7/24/2013 Client Sample ID: MW-4 Collection Date: 6/25/ :45:00 PM Received Date: 6/26/2013 9:00:00 AM Analyses Result RL Qual Units DF Date Analyzed Batch EPA METHOD 504.1: EDB/DBCP Analyst: LRW 1,2-Dibromo-3-chloropropane 0.10 µg/l 1 7/1/2013 1:08:43 PM ,2-Dibromoethane µg/l 1 7/1/2013 1:08:43 PM 8176 EPA METHOD 300.0: ANIONS Analyst: JRR Chloride mg/l 1 6/27/ :47:12 AM R11606 Nitrogen, Nitrate (As N) mg/l 1 6/27/ :47:12 AM R11606 Sulfate mg/l 1 6/27/ :47:12 AM R11606 EPA METHOD 200.7: METALS Analyst: JLF Barium mg/l 1 7/9/2013 1:10:53 PM R11805 Beryllium mg/l 1 7/9/2013 1:10:53 PM R11805 Cadmium mg/l 1 7/9/2013 1:10:53 PM R11805 Calcium mg/l 5 7/9/2013 2:21:42 PM R11805 Chromium mg/l 1 7/9/2013 1:10:53 PM R11805 Cobalt mg/l 1 7/9/2013 1:10:53 PM R11805 Copper mg/l 1 7/9/2013 1:10:53 PM R11805 Iron mg/l 1 7/9/2013 1:10:53 PM R11805 Magnesium mg/l 1 7/9/2013 1:10:53 PM R11805 Manganese mg/l 1 7/9/2013 1:10:53 PM R11805 Nickel mg/l 1 7/9/2013 1:10:53 PM R11805 Potassium mg/l 1 7/9/2013 1:10:53 PM R11805 Silver mg/l 1 7/9/2013 1:10:53 PM R11805 Sodium mg/l 1 7/9/2013 1:10:53 PM R11805 Vanadium mg/l 1 7/9/2013 1:10:53 PM R11805 Zinc mg/l 1 7/9/2013 1:10:53 PM R11805 EPA 200.8: METALS Analyst: DBD Antimony mg/l 1 7/10/ :42:50 PM R11836 Arsenic mg/l 1 7/5/ :33:21 AM R11758 Lead mg/l 1 7/5/ :33:21 AM R11758 Selenium mg/l 1 7/5/ :33:21 AM R11758 Thallium mg/l 1 7/5/ :33:21 AM R11758 EPA METHOD 8260B: VOLATILES, TABLE I Analyst: CWS 1,2-Dibromo-3-chloropropane 2.0 µg/l 1 6/28/2013 5:35:11 PM R ,2-Dibromoethane (EDB) 1.0 µg/l 1 6/28/2013 5:35:11 PM R11660 Methyl tert-butyl ether (MTBE) 1.0 µg/l 1 6/28/2013 5:35:11 PM R11660 Acetone 10 µg/l 1 6/28/2013 5:35:11 PM R11660 Acrylonitrile 10 µg/l 1 6/28/2013 5:35:11 PM R11660 Benzene 1.0 µg/l 1 6/28/2013 5:35:11 PM R11660 Bromochloromethane 2.0 µg/l 1 6/28/2013 5:35:11 PM R11660 Bromodichloromethane 1.0 µg/l 1 6/28/2013 5:35:11 PM R11660 Refer to the QC Summary report and sample login checklist for flagged QC data and preservation information. Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit Page 10 of 28 O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit

123 Hall Environmental Analysis Laboratory, Inc. CLIENT: City of Las Cruces Project: City of Las Cruces Foothills Landfill Mo Lab ID: 1306B Matrix: AQUEOUS Analytical Report Lab Order 1306B08 Date Reported: 7/24/2013 Client Sample ID: MW-4 Collection Date: 6/25/ :45:00 PM Received Date: 6/26/2013 9:00:00 AM Analyses Result RL Qual Units DF Date Analyzed Batch EPA METHOD 8260B: VOLATILES, TABLE I Bromoform Bromomethane 2-Butanone Carbon disulfide Carbon Tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-dce cis-1,3-dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane 1,2-Dichlorobenzene 1,4-Dichlorobenzene 1,2-Dichloroethane (EDC) 1,1-Dichloroethane 1,1-Dichloroethene 1,2-Dichloropropane Ethylbenzene 2-Hexanone Iodomethane 4-Methyl-2-pentanone Methylene Chloride Styrene 1,1,1,2-Tetrachloroethane 1,1,2,2-Tetrachloroethane Tetrachloroethene (PCE) Toluene trans-1,2-dce trans-1,3-dichloropropene trans-1,4-dichloro-2-butene 1,1,1-Trichloroethane 1,1,2-Trichloroethane Trichloroethene (TCE) Trichlorofluoromethane 1,2,3-Trichloropropane Vinyl acetate Vinyl chloride Analyst: CWS 1.0 µg/l 1 6/28/2013 5:35:11 PM R µg/l 1 6/28/2013 5:35:11 PM R µg/l 1 6/28/2013 5:35:11 PM R µg/l 1 6/28/2013 5:35:11 PM R µg/l 1 6/28/2013 5:35:11 PM R µg/l 1 6/28/2013 5:35:11 PM R µg/l 1 6/28/2013 5:35:11 PM R µg/l 1 6/28/2013 5:35:11 PM R µg/l 1 6/28/2013 5:35:11 PM R µg/l 1 6/28/2013 5:35:11 PM R µg/l 1 6/28/2013 5:35:11 PM R µg/l 1 6/28/2013 5:35:11 PM R µg/l 1 6/28/2013 5:35:11 PM R µg/l 1 6/28/2013 5:35:11 PM R µg/l 1 6/28/2013 5:35:11 PM R µg/l 1 6/28/2013 5:35:11 PM R µg/l 1 6/28/2013 5:35:11 PM R µg/l 1 6/28/2013 5:35:11 PM R µg/l 1 6/28/2013 5:35:11 PM R µg/l 1 6/28/2013 5:35:11 PM R µg/l 1 6/28/2013 5:35:11 PM R µg/l 1 6/28/2013 5:35:11 PM R µg/l 1 6/28/2013 5:35:11 PM R µg/l 1 6/28/2013 5:35:11 PM R µg/l 1 6/28/2013 5:35:11 PM R µg/l 1 6/28/2013 5:35:11 PM R µg/l 1 6/28/2013 5:35:11 PM R µg/l 1 6/28/2013 5:35:11 PM R µg/l 1 6/28/2013 5:35:11 PM R µg/l 1 6/28/2013 5:35:11 PM R µg/l 1 6/28/2013 5:35:11 PM R µg/l 1 6/28/2013 5:35:11 PM R µg/l 1 6/28/2013 5:35:11 PM R µg/l 1 6/28/2013 5:35:11 PM R µg/l 1 6/28/2013 5:35:11 PM R µg/l 1 6/28/2013 5:35:11 PM R µg/l 1 6/28/2013 5:35:11 PM R µg/l 1 6/28/2013 5:35:11 PM R µg/l 1 6/28/2013 5:35:11 PM R µg/l 1 6/28/2013 5:35:11 PM R11660 Refer to the QC Summary report and sample login checklist for flagged QC data and preservation information. Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit Page 11 of 28 O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit

124 Hall Environmental Analysis Laboratory, Inc. CLIENT: City of Las Cruces Project: City of Las Cruces Foothills Landfill Mo Lab ID: 1306B Matrix: AQUEOUS Analytical Report Lab Order 1306B08 Date Reported: 7/24/2013 Client Sample ID: MW-4 Collection Date: 6/25/ :45:00 PM Received Date: 6/26/2013 9:00:00 AM Analyses Result RL Qual Units DF Date Analyzed Batch EPA METHOD 8260B: VOLATILES, TABLE I Xylenes, Total Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromofluorobenzene Surr: Dibromofluoromethane Surr: Toluene-d8 TOTAL PHENOLICS BY SW µg/l 1 6/28/2013 5:35:11 PM Analyst: CWS R %REC 1 6/28/2013 5:35:11 PM R %REC 1 6/28/2013 5:35:11 PM R %REC 1 6/28/2013 5:35:11 PM R %REC 1 6/28/2013 5:35:11 PM R11660 Analyst: SCC Phenolics, Total Recoverable 2.5 µg/l 1 7/9/ EPA METHOD 9060 TOC Total Organic Carbon SM2510B: SPECIFIC COUCTANCE Conductivity SM 4500 NH3: AMMONIA Nitrogen, Ammonia SM4500-H+B: PH 1.0 mg/l 1 7/8/2013 5:35:42 PM Analyst: LRW R11792 Analyst: JML µmhos/cm 1 6/26/2013 8:18:58 PM R mg/l 1 Analyst: TMG 6/27/ :30:00 PM R11604 Analyst: JML ph H ph units 1 6/26/2013 8:18:58 PM R11593 SM2320B: ALKALINITY Bicarbonate (As CaCO3) Carbonate (As CaCO3) Total Alkalinity (as CaCO3) SM2540C MOD: TOTAL DISSOLVED SOLIDS Total Dissolved Solids Analyst: JML mg/l CaCO3 1 6/26/2013 8:18:58 PM R mg/l CaCO3 1 6/26/2013 8:18:58 PM R mg/l CaCO3 1 6/26/2013 8:18:58 PM R11593 Analyst: KS mg/l 1 6/30/2013 4:41:00 PM 8151 Refer to the QC Summary report and sample login checklist for flagged QC data and preservation information. Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit Page 12 of 28 O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit

125 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1306B08 24-Jul-13 Client: Project: City of Las Cruces City of Las Cruces Foothills Landfill Monitoring Sample ID MB Client ID: PBW Batch ID: R11805 RunNo: SampType: MBLK Analysis Date: 7/9/2013 TestCode: EPA Method 200.7: Metals SeqNo: Barium Beryllium Cadmium Calcium 1.0 Chromium Cobalt Copper Iron Magnesium 1.0 Manganese Nickel Potassium 1.0 Silver Sodium 1.0 Vanadium Zinc Sample ID LCS Client ID: LCSW Batch ID: R11805 RunNo: SampType: LCS Analysis Date: 7/9/2013 TestCode: EPA Method 200.7: Metals SeqNo: Barium Beryllium Cadmium Calcium Chromium Cobalt Copper Iron Magnesium Manganese Nickel Potassium Silver Sodium Vanadium Zinc Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit Page 13 of 28

126 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1306B08 24-Jul-13 Client: Project: City of Las Cruces City of Las Cruces Foothills Landfill Monitoring Sample ID 1306B08-001EMS Client ID: MW-1 Batch ID: R11805 RunNo: SampType: MS Analysis Date: 7/9/2013 TestCode: EPA Method 200.7: Metals SeqNo: Barium Beryllium Cadmium Calcium Chromium Cobalt Copper Iron Magnesium Manganese Nickel Potassium Silver Sodium Vanadium Zinc Sample ID 1306B08-001EMSD Client ID: MW-1 Batch ID: R11805 RunNo: SampType: MSD Analysis Date: 7/9/2013 TestCode: EPA Method 200.7: Metals SeqNo: Barium Beryllium Cadmium Calcium Chromium Cobalt Copper Iron Magnesium Manganese Nickel Potassium Silver Sodium Vanadium Zinc Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit Page 14 of 28

127 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1306B08 24-Jul-13 Client: Project: City of Las Cruces City of Las Cruces Foothills Landfill Monitoring Sample ID MB Client ID: PBW Batch ID: R11805 RunNo: SampType: MBLK Analysis Date: 7/9/2013 TestCode: EPA Method 200.7: Metals SeqNo: Barium Beryllium Cadmium Calcium 1.0 Chromium Cobalt Copper Iron Magnesium 1.0 Manganese Nickel Potassium 1.0 Silver Sodium 1.0 Vanadium Zinc Sample ID LCS Client ID: LCSW Batch ID: R11805 RunNo: SampType: LCS Analysis Date: 7/9/2013 TestCode: EPA Method 200.7: Metals SeqNo: Barium Beryllium Cadmium Calcium Chromium Cobalt Copper Iron Magnesium Manganese Nickel Potassium Silver Sodium Vanadium Zinc Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit Page 15 of 28

128 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1306B08 24-Jul-13 Client: Project: City of Las Cruces City of Las Cruces Foothills Landfill Monitoring Sample ID MB Client ID: PBW Batch ID: R11758 RunNo: SampType: MBLK Analysis Date: 7/5/2013 TestCode: EPA 200.8: Metals SeqNo: Arsenic Lead Selenium Thallium Sample ID MB Client ID: PBW Batch ID: R11758 RunNo: SampType: MBLK Analysis Date: 7/5/2013 TestCode: EPA 200.8: Metals SeqNo: Arsenic Lead Selenium Sample ID LCS Client ID: LCSW Batch ID: R11758 RunNo: SampType: LCS Analysis Date: 7/5/2013 TestCode: EPA 200.8: Metals SeqNo: Arsenic Lead Selenium Thallium Sample ID LCS Client ID: LCSW Batch ID: R11758 RunNo: SampType: LCS Analysis Date: 7/5/2013 TestCode: EPA 200.8: Metals SeqNo: Arsenic Lead Selenium Sample ID LCS Client ID: LCSW Batch ID: R11836 RunNo: SampType: LCS Analysis Date: 7/10/2013 TestCode: EPA 200.8: Metals SeqNo: Antimony Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit Page 16 of 28

129 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1306B08 24-Jul-13 Client: Project: City of Las Cruces City of Las Cruces Foothills Landfill Monitoring Sample ID MB Client ID: PBW Batch ID: R11836 RunNo: SampType: MBLK Analysis Date: 7/10/2013 TestCode: EPA 200.8: Metals SeqNo: Antimony Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit Page 17 of 28

130 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1306B08 24-Jul-13 Client: Project: City of Las Cruces City of Las Cruces Foothills Landfill Monitoring Sample ID MB Client ID: PBW Batch ID: R11606 RunNo: SampType: MBLK Analysis Date: 6/26/2013 TestCode: EPA Method 300.0: Anions SeqNo: Chloride 0.50 Nitrogen, Nitrate (As N) 0.10 Sulfate 0.50 Sample ID LCS Client ID: LCSW Batch ID: R11606 RunNo: SampType: LCS Analysis Date: 6/26/2013 TestCode: EPA Method 300.0: Anions SeqNo: Chloride Nitrogen, Nitrate (As N) Sulfate Sample ID MB Client ID: PBW Batch ID: R11606 RunNo: SampType: MBLK Analysis Date: 6/26/2013 TestCode: EPA Method 300.0: Anions SeqNo: Chloride 0.50 Nitrogen, Nitrate (As N) 0.10 Sulfate 0.50 Sample ID LCS Client ID: LCSW Batch ID: R11606 RunNo: SampType: LCS Analysis Date: 6/26/2013 TestCode: EPA Method 300.0: Anions SeqNo: Chloride Nitrogen, Nitrate (As N) Sulfate Sample ID 1306B08-001BMS Client ID: MW-1 Batch ID: R11606 RunNo: SampType: MS Analysis Date: 6/26/2013 TestCode: EPA Method 300.0: Anions SeqNo: Nitrogen, Nitrate (As N) Sulfate Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit Page 18 of 28

131 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1306B08 24-Jul-13 Client: Project: City of Las Cruces City of Las Cruces Foothills Landfill Monitoring Sample ID 1306B08-001BMSD Client ID: MW-1 Batch ID: R11606 RunNo: SampType: MSD Analysis Date: 6/26/2013 TestCode: EPA Method 300.0: Anions SeqNo: Nitrogen, Nitrate (As N) Sulfate Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit Page 19 of 28

132 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1306B08 24-Jul-13 Client: Project: City of Las Cruces City of Las Cruces Foothills Landfill Monitoring Sample ID MB-8176 Client ID: PBW Batch ID: 8176 RunNo: /1/2013 SampType: MBLK Analysis Date: 7/1/2013 TestCode: EPA Method 504.1: EDB/DBCP SeqNo: Units: µg/l 1,2-Dibromo-3-chloropropane ,2-Dibromoethane Sample ID LCS-8176 Client ID: LCSW Batch ID: 8176 RunNo: /1/2013 SampType: LCS Analysis Date: 7/1/2013 TestCode: EPA Method 504.1: EDB/DBCP SeqNo: Units: µg/l 1,2-Dibromo-3-chloropropane ,2-Dibromoethane Sample ID 1306B08-002AMS Client ID: MW-2 Batch ID: 8176 RunNo: /1/2013 SampType: MS Analysis Date: 7/1/2013 TestCode: EPA Method 504.1: EDB/DBCP SeqNo: Units: µg/l 1,2-Dibromo-3-chloropropane ,2-Dibromoethane Sample ID 1306B08-002AMSD Client ID: MW-2 Batch ID: 8176 RunNo: /1/2013 SampType: MSD Analysis Date: 7/1/2013 TestCode: EPA Method 504.1: EDB/DBCP SeqNo: Units: µg/l 1,2-Dibromo-3-chloropropane SR 1,2-Dibromoethane R Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit Page 20 of 28

133 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1306B08 24-Jul-13 Client: Project: City of Las Cruces City of Las Cruces Foothills Landfill Monitoring Sample ID 5ml rb Client ID: PBW Batch ID: R11660 RunNo: SampType: MBLK Analysis Date: 6/28/2013 TestCode: EPA Method 8260B: Volatiles, Table I SeqNo: Units: µg/l 1,2-Dibromo-3-chloropropane 2.0 1,2-Dibromoethane (EDB) 1.0 Methyl tert-butyl ether (MTBE) 1.0 Acetone 10 Acrylonitrile 10 Benzene 1.0 Bromochloromethane 2.0 Bromodichloromethane 1.0 Bromoform 1.0 Bromomethane Butanone 10 Carbon disulfide 10 Carbon Tetrachloride 1.0 Chlorobenzene 1.0 Chloroethane 2.0 Chloroform 1.0 Chloromethane 1.0 cis-1,2-dce 1.0 cis-1,3-dichloropropene 1.0 Dibromochloromethane 1.0 Dibromomethane 1.0 1,2-Dichlorobenzene 1.0 1,4-Dichlorobenzene 1.0 1,2-Dichloroethane (EDC) 1.0 1,1-Dichloroethane 1.0 1,1-Dichloroethene 1.0 1,2-Dichloropropane 0.50 Ethylbenzene Hexanone 10 Iodomethane 10 4-Methyl-2-pentanone 10 Methylene Chloride 1.0 Styrene 1.0 1,1,1,2-Tetrachloroethane 1.0 1,1,2,2-Tetrachloroethane 1.0 Tetrachloroethene (PCE) 0.50 Toluene 1.0 trans-1,2-dce 1.0 trans-1,3-dichloropropene 1.0 trans-1,4-dichloro-2-butene 10 Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit Page 21 of 28

134 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1306B08 24-Jul-13 Client: Project: City of Las Cruces City of Las Cruces Foothills Landfill Monitoring Sample ID 5ml rb Client ID: PBW Batch ID: R11660 RunNo: SampType: MBLK Analysis Date: 6/28/2013 TestCode: EPA Method 8260B: Volatiles, Table I SeqNo: Units: µg/l 1,1,1-Trichloroethane 1.0 1,1,2-Trichloroethane 1.0 Trichloroethene (TCE) 1.0 Trichlorofluoromethane 1.0 1,2,3-Trichloropropane 1.0 Vinyl acetate 10 Vinyl chloride 0.40 Xylenes, Total 2.0 Surr: 1,2-Dichloroethane-d Surr: 4-Bromofluorobenzene Surr: Dibromofluoromethane Surr: Toluene-d Sample ID 100ng lcs Client ID: LCSW Batch ID: R11660 RunNo: SampType: LCS Analysis Date: 6/28/2013 TestCode: EPA Method 8260B: Volatiles, Table I SeqNo: Units: µg/l Benzene Chlorobenzene ,1-Dichloroethene Toluene Trichloroethene (TCE) Surr: 1,2-Dichloroethane-d Surr: 4-Bromofluorobenzene Surr: Dibromofluoromethane Surr: Toluene-d Sample ID 1306b08-001a ms Client ID: MW-1 Batch ID: R11660 RunNo: SampType: MS Analysis Date: 6/28/2013 TestCode: EPA Method 8260B: Volatiles, Table I SeqNo: Units: µg/l Benzene Chlorobenzene ,1-Dichloroethene Toluene Trichloroethene (TCE) S Surr: 1,2-Dichloroethane-d Surr: 4-Bromofluorobenzene Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit Page 22 of 28

135 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1306B08 24-Jul-13 Client: Project: City of Las Cruces City of Las Cruces Foothills Landfill Monitoring Sample ID 1306b08-001a ms Client ID: MW-1 Batch ID: R11660 RunNo: SampType: MS Analysis Date: 6/28/2013 TestCode: EPA Method 8260B: Volatiles, Table I SeqNo: Units: µg/l Surr: Dibromofluoromethane Surr: Toluene-d Sample ID 1306b08-001a msd Client ID: MW-1 Batch ID: R11660 RunNo: SampType: MSD Analysis Date: 6/28/2013 TestCode: EPA Method 8260B: Volatiles, Table I SeqNo: Units: µg/l Benzene Chlorobenzene ,1-Dichloroethene Toluene Trichloroethene (TCE) S Surr: 1,2-Dichloroethane-d Surr: 4-Bromofluorobenzene Surr: Dibromofluoromethane Surr: Toluene-d Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit Page 23 of 28

136 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1306B08 24-Jul-13 Client: Project: City of Las Cruces City of Las Cruces Foothills Landfill Monitoring Sample ID MB Client ID: PBW Batch ID: R11792 RunNo: SampType: MBLK Analysis Date: 7/8/2013 TestCode: EPA Method 9060 TOC SeqNo: Total Organic Carbon 1.0 Sample ID LCS ST Client ID: LCSW Batch ID: R11792 RunNo: SampType: LCS Analysis Date: 7/8/2013 TestCode: EPA Method 9060 TOC SeqNo: Total Organic Carbon Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit Page 24 of 28

137 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1306B08 24-Jul-13 Client: Project: City of Las Cruces City of Las Cruces Foothills Landfill Monitoring Sample ID MB-8278 Client ID: PBW Batch ID: 8278 RunNo: /9/2013 SampType: MBLK TestCode: Total Phenolics by SW Analysis Date: 7/9/2013 SeqNo: Units: µg/l Phenolics, Total Recoverable 2.5 Sample ID LCS-8278 Client ID: LCSW Batch ID: 8278 RunNo: /9/2013 SampType: LCS TestCode: Total Phenolics by SW Analysis Date: 7/9/2013 SeqNo: Units: µg/l Phenolics, Total Recoverable Sample ID LCSD-8278 Client ID: LCSS02 Batch ID: 8278 RunNo: /9/2013 SampType: LCSD TestCode: Total Phenolics by SW Analysis Date: 7/9/2013 SeqNo: Units: µg/l Phenolics, Total Recoverable Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit Page 25 of 28

138 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1306B08 24-Jul-13 Client: Project: City of Las Cruces City of Las Cruces Foothills Landfill Monitoring Sample ID MB Client ID: PBW Batch ID: R11604 RunNo: SampType: MBLK Analysis Date: 6/27/2013 TestCode: SM 4500 NH3: Ammonia SeqNo: Nitrogen, Ammonia 1.0 Sample ID LCS Client ID: LCSW Batch ID: R11604 RunNo: SampType: LCS Analysis Date: 6/27/2013 TestCode: SM 4500 NH3: Ammonia SeqNo: Nitrogen, Ammonia Sample ID 1306B08-001BMS Client ID: MW-1 Batch ID: R11604 RunNo: SampType: MS Analysis Date: 6/27/2013 TestCode: SM 4500 NH3: Ammonia SeqNo: Nitrogen, Ammonia Sample ID 1306B08-001BMSD Client ID: MW-1 Batch ID: R11604 RunNo: SampType: MSD Analysis Date: 6/27/2013 TestCode: SM 4500 NH3: Ammonia SeqNo: Nitrogen, Ammonia Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit Page 26 of 28

139 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1306B08 24-Jul-13 Client: Project: City of Las Cruces City of Las Cruces Foothills Landfill Monitoring Sample ID mb-1 Client ID: PBW Batch ID: R11593 RunNo: SampType: mblk Analysis Date: 6/26/2013 TestCode: SM2320B: Alkalinity SeqNo: CaCO3 Total Alkalinity (as CaCO3) 20 Sample ID lcs-1 Client ID: LCSW Batch ID: R11593 RunNo: SampType: lcs Analysis Date: 6/26/2013 TestCode: SM2320B: Alkalinity SeqNo: CaCO3 Total Alkalinity (as CaCO3) Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit Page 27 of 28

140 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1306B08 24-Jul-13 Client: Project: City of Las Cruces City of Las Cruces Foothills Landfill Monitoring Sample ID MB-8151 Client ID: PBW Batch ID: 8151 RunNo: /28/2013 SampType: MBLK Analysis Date: 6/30/2013 TestCode: SM2540C MOD: Total Dissolved Solids SeqNo: Total Dissolved Solids 20.0 Sample ID LCS-8151 Client ID: LCSW Batch ID: 8151 RunNo: /28/2013 SampType: LCS Analysis Date: 6/30/2013 TestCode: SM2540C MOD: Total Dissolved Solids SeqNo: Total Dissolved Solids Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit Page 28 of 28

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143 JSAI Laboratory Results Sample Dates (Lab Report Date ) JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

144 Hall Environmental Analysis Laboratory 4901 Hawkins NE Albuquerque, NM TEL: FAX: Website: July 30, 2013 Joshua Rosenblatt City of Las Cruces PO Box Las Cruces, NM TEL: (575) FAX (575) RE: City of Las Cruces Foothills Landfill Monitoring Wells OrderNo.: 1306B57 Dear Joshua Rosenblatt: Hall Environmental Analysis Laboratory received 6 sample(s) on 6/27/2013 for the analyses presented in the following report. This report is a revised report and it replaces the original report issued July 19, These were analyzed according to EPA procedures or equivalent. To access our accredited tests please go to or the state specific web sites. See the sample checklist and/or the Chain of Custody for information regarding the sample receipt temperature and preservation. Data qualifiers or a narrative will be provided if the sample analysis or analytical quality control parameters require a flag. All samples are reported as received unless otherwise indicated. Please don't hesitate to contact HEAL for any additional information or clarifications. Sincerely, Andy Freeman Laboratory Manager 4901 Hawkins NE Albuquerque, NM 87109

145 Hall Environmental Analysis Laboratory, Inc. CLIENT: City of Las Cruces Project: City of Las Cruces Foothills Landfill Mo Lab ID: 1306B Matrix: AQUEOUS Analytical Report Lab Order 1306B57 Date Reported: 7/30/2013 Client Sample ID: MW-8 Collection Date: 6/26/2013 8:30:00 AM Received Date: 6/27/2013 9:00:00 AM Analyses Result RL Qual Units DF Date Analyzed Batch EPA METHOD 504.1: EDB/DBCP Analyst: LRW 1,2-Dibromo-3-chloropropane 0.10 µg/l 1 7/1/2013 1:22:28 PM ,2-Dibromoethane µg/l 1 7/1/2013 1:22:28 PM 8176 EPA METHOD 300.0: ANIONS Analyst: JRR Chloride mg/l 1 6/28/ :57:19 AM R11629 Nitrogen, Nitrate (As N) mg/l 1 6/28/ :57:19 AM R11629 Sulfate mg/l 1 6/28/ :57:19 AM R11629 EPA METHOD 200.7: METALS Analyst: JLF Barium mg/l 1 7/3/2013 5:41:18 PM 8170 Beryllium mg/l 1 7/3/2013 5:41:18 PM 8170 Cadmium mg/l 1 7/3/2013 5:41:18 PM 8170 Calcium mg/l 1 7/3/2013 5:41:18 PM 8170 Chromium mg/l 1 7/3/2013 5:41:18 PM 8170 Cobalt mg/l 1 7/3/2013 5:41:18 PM 8170 Copper mg/l 1 7/3/2013 5:41:18 PM 8170 Iron mg/l 1 7/3/2013 5:41:18 PM 8170 Magnesium mg/l 1 7/3/2013 5:41:18 PM 8170 Manganese mg/l 1 7/3/2013 5:41:18 PM 8170 Nickel mg/l 1 7/3/2013 5:41:18 PM 8170 Potassium mg/l 1 7/3/2013 5:41:18 PM 8170 Silver mg/l 1 7/3/2013 5:41:18 PM 8170 Sodium mg/l 1 7/3/2013 5:41:18 PM 8170 Vanadium mg/l 1 7/3/2013 5:41:18 PM 8170 Zinc mg/l 1 7/3/2013 5:41:18 PM 8170 EPA 200.8: METALS Analyst: DBD Antimony mg/l 1 7/17/ :36:37 AM 8170 Arsenic mg/l 1 7/10/2013 4:51:50 PM 8170 Lead mg/l 1 7/10/2013 4:51:50 PM 8170 Selenium mg/l 1 7/10/2013 4:51:50 PM 8170 Thallium mg/l 1 7/10/2013 4:51:50 PM 8170 EPA METHOD 8260B: VOLATILES, TABLE I Analyst: CWS 1,2-Dibromo-3-chloropropane 2.0 µg/l 1 6/28/2013 6:04:07 PM R ,2-Dibromoethane (EDB) 1.0 µg/l 1 6/28/2013 6:04:07 PM R11660 Methyl tert-butyl ether (MTBE) 1.0 µg/l 1 6/28/2013 6:04:07 PM R11660 Acetone 10 µg/l 1 6/28/2013 6:04:07 PM R11660 Acrylonitrile 10 µg/l 1 6/28/2013 6:04:07 PM R11660 Benzene 1.0 µg/l 1 6/28/2013 6:04:07 PM R11660 Bromochloromethane 2.0 µg/l 1 6/28/2013 6:04:07 PM R11660 Bromodichloromethane 1.0 µg/l 1 6/28/2013 6:04:07 PM R11660 Refer to the QC Summary report and sample login checklist for flagged QC data and preservation information. Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit Page 1 of 38 O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit

146 Hall Environmental Analysis Laboratory, Inc. CLIENT: City of Las Cruces Project: City of Las Cruces Foothills Landfill Mo Lab ID: 1306B Matrix: AQUEOUS Analytical Report Lab Order 1306B57 Date Reported: 7/30/2013 Client Sample ID: MW-8 Collection Date: 6/26/2013 8:30:00 AM Received Date: 6/27/2013 9:00:00 AM Analyses Result RL Qual Units DF Date Analyzed Batch EPA METHOD 8260B: VOLATILES, TABLE I Bromoform Bromomethane 2-Butanone Carbon disulfide Carbon Tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-dce cis-1,3-dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane 1,2-Dichlorobenzene 1,4-Dichlorobenzene 1,2-Dichloroethane (EDC) 1,1-Dichloroethane 1,1-Dichloroethene 1,2-Dichloropropane Ethylbenzene 2-Hexanone Iodomethane 4-Methyl-2-pentanone Methylene Chloride Styrene 1,1,1,2-Tetrachloroethane 1,1,2,2-Tetrachloroethane Tetrachloroethene (PCE) Toluene trans-1,2-dce trans-1,3-dichloropropene trans-1,4-dichloro-2-butene 1,1,1-Trichloroethane 1,1,2-Trichloroethane Trichloroethene (TCE) Trichlorofluoromethane 1,2,3-Trichloropropane Vinyl acetate Vinyl chloride Analyst: CWS 1.0 µg/l 1 6/28/2013 6:04:07 PM R µg/l 1 6/28/2013 6:04:07 PM R µg/l 1 6/28/2013 6:04:07 PM R µg/l 1 6/28/2013 6:04:07 PM R µg/l 1 6/28/2013 6:04:07 PM R µg/l 1 6/28/2013 6:04:07 PM R µg/l 1 6/28/2013 6:04:07 PM R µg/l 1 6/28/2013 6:04:07 PM R µg/l 1 6/28/2013 6:04:07 PM R µg/l 1 6/28/2013 6:04:07 PM R µg/l 1 6/28/2013 6:04:07 PM R µg/l 1 6/28/2013 6:04:07 PM R µg/l 1 6/28/2013 6:04:07 PM R µg/l 1 6/28/2013 6:04:07 PM R µg/l 1 6/28/2013 6:04:07 PM R µg/l 1 6/28/2013 6:04:07 PM R µg/l 1 6/28/2013 6:04:07 PM R µg/l 1 6/28/2013 6:04:07 PM R µg/l 1 6/28/2013 6:04:07 PM R µg/l 1 6/28/2013 6:04:07 PM R µg/l 1 6/28/2013 6:04:07 PM R µg/l 1 6/28/2013 6:04:07 PM R µg/l 1 6/28/2013 6:04:07 PM R µg/l 1 6/28/2013 6:04:07 PM R µg/l 1 6/28/2013 6:04:07 PM R µg/l 1 6/28/2013 6:04:07 PM R µg/l 1 6/28/2013 6:04:07 PM R µg/l 1 6/28/2013 6:04:07 PM R µg/l 1 6/28/2013 6:04:07 PM R µg/l 1 6/28/2013 6:04:07 PM R µg/l 1 6/28/2013 6:04:07 PM R µg/l 1 6/28/2013 6:04:07 PM R µg/l 1 6/28/2013 6:04:07 PM R µg/l 1 6/28/2013 6:04:07 PM R µg/l 1 6/28/2013 6:04:07 PM R µg/l 1 6/28/2013 6:04:07 PM R µg/l 1 6/28/2013 6:04:07 PM R µg/l 1 6/28/2013 6:04:07 PM R µg/l 1 6/28/2013 6:04:07 PM R µg/l 1 6/28/2013 6:04:07 PM R11660 Refer to the QC Summary report and sample login checklist for flagged QC data and preservation information. Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit Page 2 of 38 O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit

147 Hall Environmental Analysis Laboratory, Inc. CLIENT: City of Las Cruces Project: City of Las Cruces Foothills Landfill Mo Lab ID: 1306B Matrix: AQUEOUS Analytical Report Lab Order 1306B57 Date Reported: 7/30/2013 Client Sample ID: MW-8 Collection Date: 6/26/2013 8:30:00 AM Received Date: 6/27/2013 9:00:00 AM Analyses Result RL Qual Units DF Date Analyzed Batch EPA METHOD 8260B: VOLATILES, TABLE I Xylenes, Total Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromofluorobenzene Surr: Dibromofluoromethane Surr: Toluene-d8 TOTAL PHENOLICS BY SW µg/l 1 6/28/2013 6:04:07 PM Analyst: CWS R %REC 1 6/28/2013 6:04:07 PM R %REC 1 6/28/2013 6:04:07 PM R %REC 1 6/28/2013 6:04:07 PM R %REC 1 6/28/2013 6:04:07 PM R11660 Analyst: SCC Phenolics, Total Recoverable 2.5 µg/l 1 7/9/ EPA METHOD 9060 TOC Total Organic Carbon SM2510B: SPECIFIC COUCTANCE Conductivity SM 4500 NH3: AMMONIA Nitrogen, Ammonia SM4500-H+B: PH Analyst: LRW mg/l 1 7/8/2013 8:03:05 PM R11792 Analyst: JML µmhos/cm 1 6/27/2013 3:14:18 PM R mg/l 1 7/11/2013 6:43:00 AM Analyst: TMG R11855 Analyst: JML ph H ph units 1 6/27/2013 3:14:18 PM R11633 SM2320B: ALKALINITY Bicarbonate (As CaCO3) Carbonate (As CaCO3) Total Alkalinity (as CaCO3) SM2540C MOD: TOTAL DISSOLVED SOLIDS Total Dissolved Solids Analyst: JML mg/l CaCO3 1 6/27/2013 3:14:18 PM R mg/l CaCO3 1 6/27/2013 3:14:18 PM R mg/l CaCO3 1 6/27/2013 3:14:18 PM R11633 Analyst: KS mg/l 1 6/30/2013 4:41:00 PM 8151 Refer to the QC Summary report and sample login checklist for flagged QC data and preservation information. Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit Page 3 of 38 O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit

148 Hall Environmental Analysis Laboratory, Inc. CLIENT: City of Las Cruces Project: City of Las Cruces Foothills Landfill Mo Lab ID: 1306B Matrix: AQUEOUS Analytical Report Lab Order 1306B57 Date Reported: 7/30/2013 Client Sample ID: MW-7 Collection Date: 6/26/2013 9:20:00 AM Received Date: 6/27/2013 9:00:00 AM Analyses Result RL Qual Units DF Date Analyzed Batch EPA METHOD 504.1: EDB/DBCP Analyst: LRW 1,2-Dibromo-3-chloropropane 0.10 µg/l 1 7/1/2013 1:36:20 PM ,2-Dibromoethane µg/l 1 7/1/2013 1:36:20 PM 8176 EPA METHOD 300.0: ANIONS Analyst: JRR Chloride mg/l 20 6/28/2013 1:34:33 AM R11629 Nitrogen, Nitrate (As N) mg/l 1 6/28/2013 1:22:08 AM R11629 Sulfate mg/l 20 6/28/2013 1:34:33 AM R11629 EPA METHOD 200.7: METALS Analyst: JLF Barium mg/l 1 7/9/2013 1:42:22 PM R11805 Beryllium mg/l 1 7/9/2013 1:42:22 PM R11805 Cadmium mg/l 1 7/9/2013 1:42:22 PM R11805 Calcium mg/l 1 7/9/2013 1:42:22 PM R11805 Chromium mg/l 1 7/9/2013 1:42:22 PM R11805 Cobalt mg/l 1 7/9/2013 1:42:22 PM R11805 Copper mg/l 1 7/9/2013 1:42:22 PM R11805 Iron mg/l 1 7/9/2013 1:42:22 PM R11805 Magnesium mg/l 1 7/9/2013 1:42:22 PM R11805 Manganese mg/l 1 7/9/2013 1:42:22 PM R11805 Nickel mg/l 1 7/9/2013 1:42:22 PM R11805 Potassium mg/l 1 7/9/2013 1:42:22 PM R11805 Silver mg/l 1 7/9/2013 1:42:22 PM R11805 Sodium mg/l 1 7/9/2013 1:42:22 PM R11805 Vanadium mg/l 1 7/9/2013 1:42:22 PM R11805 Zinc mg/l 1 7/9/2013 1:42:22 PM R11805 EPA 200.8: METALS Analyst: DBD Antimony mg/l 1 7/11/2013 6:23:09 PM R11882 Arsenic mg/l 1 7/16/2013 2:08:00 PM R11967 Lead mg/l 1 7/16/2013 2:08:00 PM R11967 Selenium mg/l 1 7/16/2013 2:08:00 PM R11967 Thallium mg/l 1 7/11/2013 6:23:09 PM R11882 EPA METHOD 8260B: VOLATILES, TABLE I Analyst: CWS 1,2-Dibromo-3-chloropropane 2.0 µg/l 1 6/28/2013 6:33:00 PM R ,2-Dibromoethane (EDB) 1.0 µg/l 1 6/28/2013 6:33:00 PM R11660 Methyl tert-butyl ether (MTBE) 1.0 µg/l 1 6/28/2013 6:33:00 PM R11660 Acetone 10 µg/l 1 6/28/2013 6:33:00 PM R11660 Acrylonitrile 10 µg/l 1 6/28/2013 6:33:00 PM R11660 Benzene 1.0 µg/l 1 6/28/2013 6:33:00 PM R11660 Bromochloromethane 2.0 µg/l 1 6/28/2013 6:33:00 PM R11660 Bromodichloromethane 1.0 µg/l 1 6/28/2013 6:33:00 PM R11660 Refer to the QC Summary report and sample login checklist for flagged QC data and preservation information. Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit Page 4 of 38 O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit

149 Hall Environmental Analysis Laboratory, Inc. CLIENT: City of Las Cruces Project: City of Las Cruces Foothills Landfill Mo Lab ID: 1306B Matrix: AQUEOUS Analytical Report Lab Order 1306B57 Date Reported: 7/30/2013 Client Sample ID: MW-7 Collection Date: 6/26/2013 9:20:00 AM Received Date: 6/27/2013 9:00:00 AM Analyses Result RL Qual Units DF Date Analyzed Batch EPA METHOD 8260B: VOLATILES, TABLE I Bromoform Bromomethane 2-Butanone Carbon disulfide Carbon Tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-dce cis-1,3-dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane 1,2-Dichlorobenzene 1,4-Dichlorobenzene 1,2-Dichloroethane (EDC) 1,1-Dichloroethane 1,1-Dichloroethene 1,2-Dichloropropane Ethylbenzene 2-Hexanone Iodomethane 4-Methyl-2-pentanone Methylene Chloride Styrene 1,1,1,2-Tetrachloroethane 1,1,2,2-Tetrachloroethane Tetrachloroethene (PCE) Toluene trans-1,2-dce trans-1,3-dichloropropene trans-1,4-dichloro-2-butene 1,1,1-Trichloroethane 1,1,2-Trichloroethane Trichloroethene (TCE) Trichlorofluoromethane 1,2,3-Trichloropropane Vinyl acetate Vinyl chloride Analyst: CWS 1.0 µg/l 1 6/28/2013 6:33:00 PM R µg/l 1 6/28/2013 6:33:00 PM R µg/l 1 6/28/2013 6:33:00 PM R µg/l 1 6/28/2013 6:33:00 PM R µg/l 1 6/28/2013 6:33:00 PM R µg/l 1 6/28/2013 6:33:00 PM R µg/l 1 6/28/2013 6:33:00 PM R µg/l 1 6/28/2013 6:33:00 PM R µg/l 1 6/28/2013 6:33:00 PM R µg/l 1 6/28/2013 6:33:00 PM R µg/l 1 6/28/2013 6:33:00 PM R µg/l 1 6/28/2013 6:33:00 PM R µg/l 1 6/28/2013 6:33:00 PM R µg/l 1 6/28/2013 6:33:00 PM R µg/l 1 6/28/2013 6:33:00 PM R µg/l 1 6/28/2013 6:33:00 PM R µg/l 1 6/28/2013 6:33:00 PM R µg/l 1 6/28/2013 6:33:00 PM R µg/l 1 6/28/2013 6:33:00 PM R µg/l 1 6/28/2013 6:33:00 PM R µg/l 1 6/28/2013 6:33:00 PM R µg/l 1 6/28/2013 6:33:00 PM R µg/l 1 6/28/2013 6:33:00 PM R µg/l 1 6/28/2013 6:33:00 PM R µg/l 1 6/28/2013 6:33:00 PM R µg/l 1 6/28/2013 6:33:00 PM R µg/l 1 6/28/2013 6:33:00 PM R µg/l 1 6/28/2013 6:33:00 PM R µg/l 1 6/28/2013 6:33:00 PM R µg/l 1 6/28/2013 6:33:00 PM R µg/l 1 6/28/2013 6:33:00 PM R µg/l 1 6/28/2013 6:33:00 PM R µg/l 1 6/28/2013 6:33:00 PM R µg/l 1 6/28/2013 6:33:00 PM R µg/l 1 6/28/2013 6:33:00 PM R µg/l 1 6/28/2013 6:33:00 PM R µg/l 1 6/28/2013 6:33:00 PM R µg/l 1 6/28/2013 6:33:00 PM R µg/l 1 6/28/2013 6:33:00 PM R µg/l 1 6/28/2013 6:33:00 PM R11660 Refer to the QC Summary report and sample login checklist for flagged QC data and preservation information. Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit Page 5 of 38 O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit

150 Hall Environmental Analysis Laboratory, Inc. CLIENT: City of Las Cruces Project: City of Las Cruces Foothills Landfill Mo Lab ID: 1306B Matrix: AQUEOUS Analytical Report Lab Order 1306B57 Date Reported: 7/30/2013 Client Sample ID: MW-7 Collection Date: 6/26/2013 9:20:00 AM Received Date: 6/27/2013 9:00:00 AM Analyses Result RL Qual Units DF Date Analyzed Batch EPA METHOD 8260B: VOLATILES, TABLE I Xylenes, Total Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromofluorobenzene Surr: Dibromofluoromethane Surr: Toluene-d8 TOTAL PHENOLICS BY SW µg/l 1 6/28/2013 6:33:00 PM Analyst: CWS R %REC 1 6/28/2013 6:33:00 PM R %REC 1 6/28/2013 6:33:00 PM R %REC 1 6/28/2013 6:33:00 PM R %REC 1 6/28/2013 6:33:00 PM R11660 Analyst: SCC Phenolics, Total Recoverable 2.5 µg/l 1 7/9/ EPA METHOD 9060 TOC Total Organic Carbon SM2510B: SPECIFIC COUCTANCE Conductivity SM 4500 NH3: AMMONIA Nitrogen, Ammonia SM4500-H+B: PH 1.0 mg/l 1 7/8/2013 8:19:44 PM Analyst: LRW R11792 Analyst: JML µmhos/cm 1 6/27/2013 3:25:46 PM R mg/l 1 7/11/2013 6:43:00 AM Analyst: TMG R11855 Analyst: JML ph H ph units 1 6/27/2013 3:25:46 PM R11633 SM2320B: ALKALINITY Bicarbonate (As CaCO3) Carbonate (As CaCO3) Total Alkalinity (as CaCO3) SM2540C MOD: TOTAL DISSOLVED SOLIDS Total Dissolved Solids Analyst: JML mg/l CaCO3 1 6/27/2013 3:25:46 PM R mg/l CaCO3 1 6/27/2013 3:25:46 PM R mg/l CaCO3 1 6/27/2013 3:25:46 PM R11633 Analyst: KS mg/l 1 6/30/2013 4:41:00 PM 8151 Refer to the QC Summary report and sample login checklist for flagged QC data and preservation information. Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit Page 6 of 38 O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit

151 Hall Environmental Analysis Laboratory, Inc. CLIENT: City of Las Cruces Project: City of Las Cruces Foothills Landfill Mo Lab ID: 1306B Matrix: AQUEOUS Analytical Report Lab Order 1306B57 Date Reported: 7/30/2013 Client Sample ID: MW-6 Collection Date: 6/26/ :00:00 AM Received Date: 6/27/2013 9:00:00 AM Analyses Result RL Qual Units DF Date Analyzed Batch EPA METHOD 504.1: EDB/DBCP Analyst: LRW 1,2-Dibromo-3-chloropropane 0.10 µg/l 1 7/1/2013 1:50:05 PM ,2-Dibromoethane µg/l 1 7/1/2013 1:50:05 PM 8176 EPA METHOD 300.0: ANIONS Analyst: JRR Chloride mg/l 1 6/28/2013 1:46:58 AM R11629 Nitrogen, Nitrate (As N) mg/l 1 6/28/2013 1:46:58 AM R11629 Sulfate mg/l 1 6/28/2013 1:46:58 AM R11629 EPA METHOD 200.7: METALS Analyst: JLF Barium mg/l 1 7/9/2013 1:44:49 PM R11805 Beryllium mg/l 1 7/9/2013 1:44:49 PM R11805 Cadmium mg/l 1 7/9/2013 1:44:49 PM R11805 Calcium mg/l 1 7/9/2013 1:44:49 PM R11805 Chromium mg/l 1 7/9/2013 1:44:49 PM R11805 Cobalt mg/l 1 7/9/2013 1:44:49 PM R11805 Copper mg/l 1 7/9/2013 1:44:49 PM R11805 Iron mg/l 1 7/9/2013 1:44:49 PM R11805 Magnesium mg/l 1 7/9/2013 1:44:49 PM R11805 Manganese mg/l 1 7/9/2013 1:44:49 PM R11805 Nickel mg/l 1 7/9/2013 1:44:49 PM R11805 Potassium mg/l 1 7/9/2013 1:44:49 PM R11805 Silver mg/l 1 7/9/2013 1:44:49 PM R11805 Sodium mg/l 1 7/9/2013 1:44:49 PM R11805 Vanadium mg/l 1 7/9/2013 1:44:49 PM R11805 Zinc mg/l 1 7/9/2013 1:44:49 PM R11805 EPA 200.8: METALS Analyst: DBD Antimony mg/l 1 7/11/2013 6:27:28 PM R11882 Arsenic mg/l 1 7/16/2013 2:16:01 PM R11967 Lead mg/l 1 7/16/2013 2:16:01 PM R11967 Selenium mg/l 1 7/16/2013 2:16:01 PM R11967 Thallium mg/l 1 7/11/2013 6:27:28 PM R11882 EPA METHOD 8260B: VOLATILES, TABLE I Analyst: CWS 1,2-Dibromo-3-chloropropane 2.0 µg/l 1 6/28/2013 7:01:51 PM R ,2-Dibromoethane (EDB) 1.0 µg/l 1 6/28/2013 7:01:51 PM R11660 Methyl tert-butyl ether (MTBE) 1.0 µg/l 1 6/28/2013 7:01:51 PM R11660 Acetone 10 µg/l 1 6/28/2013 7:01:51 PM R11660 Acrylonitrile 10 µg/l 1 6/28/2013 7:01:51 PM R11660 Benzene 1.0 µg/l 1 6/28/2013 7:01:51 PM R11660 Bromochloromethane 2.0 µg/l 1 6/28/2013 7:01:51 PM R11660 Bromodichloromethane 1.0 µg/l 1 6/28/2013 7:01:51 PM R11660 Refer to the QC Summary report and sample login checklist for flagged QC data and preservation information. Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit Page 7 of 38 O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit

152 Hall Environmental Analysis Laboratory, Inc. CLIENT: City of Las Cruces Project: City of Las Cruces Foothills Landfill Mo Lab ID: 1306B Matrix: AQUEOUS Analytical Report Lab Order 1306B57 Date Reported: 7/30/2013 Client Sample ID: MW-6 Collection Date: 6/26/ :00:00 AM Received Date: 6/27/2013 9:00:00 AM Analyses Result RL Qual Units DF Date Analyzed Batch EPA METHOD 8260B: VOLATILES, TABLE I Bromoform Bromomethane 2-Butanone Carbon disulfide Carbon Tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-dce cis-1,3-dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane 1,2-Dichlorobenzene 1,4-Dichlorobenzene 1,2-Dichloroethane (EDC) 1,1-Dichloroethane 1,1-Dichloroethene 1,2-Dichloropropane Ethylbenzene 2-Hexanone Iodomethane 4-Methyl-2-pentanone Methylene Chloride Styrene 1,1,1,2-Tetrachloroethane 1,1,2,2-Tetrachloroethane Tetrachloroethene (PCE) Toluene trans-1,2-dce trans-1,3-dichloropropene trans-1,4-dichloro-2-butene 1,1,1-Trichloroethane 1,1,2-Trichloroethane Trichloroethene (TCE) Trichlorofluoromethane 1,2,3-Trichloropropane Vinyl acetate Vinyl chloride Analyst: CWS 1.0 µg/l 1 6/28/2013 7:01:51 PM R µg/l 1 6/28/2013 7:01:51 PM R µg/l 1 6/28/2013 7:01:51 PM R µg/l 1 6/28/2013 7:01:51 PM R µg/l 1 6/28/2013 7:01:51 PM R µg/l 1 6/28/2013 7:01:51 PM R µg/l 1 6/28/2013 7:01:51 PM R µg/l 1 6/28/2013 7:01:51 PM R µg/l 1 6/28/2013 7:01:51 PM R µg/l 1 6/28/2013 7:01:51 PM R µg/l 1 6/28/2013 7:01:51 PM R µg/l 1 6/28/2013 7:01:51 PM R µg/l 1 6/28/2013 7:01:51 PM R µg/l 1 6/28/2013 7:01:51 PM R µg/l 1 6/28/2013 7:01:51 PM R µg/l 1 6/28/2013 7:01:51 PM R µg/l 1 6/28/2013 7:01:51 PM R µg/l 1 6/28/2013 7:01:51 PM R µg/l 1 6/28/2013 7:01:51 PM R µg/l 1 6/28/2013 7:01:51 PM R µg/l 1 6/28/2013 7:01:51 PM R µg/l 1 6/28/2013 7:01:51 PM R µg/l 1 6/28/2013 7:01:51 PM R µg/l 1 6/28/2013 7:01:51 PM R µg/l 1 6/28/2013 7:01:51 PM R µg/l 1 6/28/2013 7:01:51 PM R µg/l 1 6/28/2013 7:01:51 PM R µg/l 1 6/28/2013 7:01:51 PM R µg/l 1 6/28/2013 7:01:51 PM R µg/l 1 6/28/2013 7:01:51 PM R µg/l 1 6/28/2013 7:01:51 PM R µg/l 1 6/28/2013 7:01:51 PM R µg/l 1 6/28/2013 7:01:51 PM R µg/l 1 6/28/2013 7:01:51 PM R µg/l 1 6/28/2013 7:01:51 PM R µg/l 1 6/28/2013 7:01:51 PM R µg/l 1 6/28/2013 7:01:51 PM R µg/l 1 6/28/2013 7:01:51 PM R µg/l 1 6/28/2013 7:01:51 PM R µg/l 1 6/28/2013 7:01:51 PM R11660 Refer to the QC Summary report and sample login checklist for flagged QC data and preservation information. Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit Page 8 of 38 O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit

153 Hall Environmental Analysis Laboratory, Inc. CLIENT: City of Las Cruces Project: City of Las Cruces Foothills Landfill Mo Lab ID: 1306B Matrix: AQUEOUS Analytical Report Lab Order 1306B57 Date Reported: 7/30/2013 Client Sample ID: MW-6 Collection Date: 6/26/ :00:00 AM Received Date: 6/27/2013 9:00:00 AM Analyses Result RL Qual Units DF Date Analyzed Batch EPA METHOD 8260B: VOLATILES, TABLE I Xylenes, Total Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromofluorobenzene Surr: Dibromofluoromethane Surr: Toluene-d8 TOTAL PHENOLICS BY SW µg/l 1 6/28/2013 7:01:51 PM Analyst: CWS R %REC 1 6/28/2013 7:01:51 PM R %REC 1 6/28/2013 7:01:51 PM R %REC 1 6/28/2013 7:01:51 PM R %REC 1 6/28/2013 7:01:51 PM R11660 Analyst: SCC Phenolics, Total Recoverable 2.5 µg/l 1 7/9/ EPA METHOD 9060 TOC Total Organic Carbon SM2510B: SPECIFIC COUCTANCE Conductivity SM 4500 NH3: AMMONIA Nitrogen, Ammonia SM4500-H+B: PH Analyst: LRW mg/l 1 7/8/2013 8:36:23 PM R11792 Analyst: JML µmhos/cm 1 6/27/2013 3:35:55 PM R mg/l 1 7/11/2013 6:43:00 AM Analyst: TMG R11855 Analyst: JML ph H ph units 1 6/27/2013 3:35:55 PM R11633 SM2320B: ALKALINITY Bicarbonate (As CaCO3) Carbonate (As CaCO3) Total Alkalinity (as CaCO3) SM2540C MOD: TOTAL DISSOLVED SOLIDS Total Dissolved Solids Analyst: JML mg/l CaCO3 1 6/27/2013 3:35:55 PM R mg/l CaCO3 1 6/27/2013 3:35:55 PM R mg/l CaCO3 1 6/27/2013 3:35:55 PM R11633 Analyst: KS mg/l 1 6/30/2013 4:41:00 PM 8151 Refer to the QC Summary report and sample login checklist for flagged QC data and preservation information. Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit Page 9 of 38 O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit

154 Hall Environmental Analysis Laboratory, Inc. CLIENT: City of Las Cruces Project: City of Las Cruces Foothills Landfill Mo Lab ID: 1306B Matrix: AQUEOUS Analytical Report Lab Order 1306B57 Date Reported: 7/30/2013 Client Sample ID: MW-5 Collection Date: 6/26/ :35:00 AM Received Date: 6/27/2013 9:00:00 AM Analyses Result RL Qual Units DF Date Analyzed Batch EPA METHOD 504.1: EDB/DBCP Analyst: LRW 1,2-Dibromo-3-chloropropane 0.10 µg/l 1 7/1/2013 2:03:49 PM ,2-Dibromoethane µg/l 1 7/1/2013 2:03:49 PM 8176 EPA METHOD 300.0: ANIONS Analyst: JRR Chloride mg/l 20 6/28/2013 2:24:12 AM R11629 Nitrogen, Nitrate (As N) mg/l 1 6/28/2013 2:11:47 AM R11629 Sulfate mg/l 1 6/28/2013 2:11:47 AM R11629 EPA METHOD 200.7: METALS Analyst: JLF Barium mg/l 1 7/9/2013 1:47:15 PM R11805 Beryllium mg/l 1 7/9/2013 1:47:15 PM R11805 Cadmium mg/l 1 7/9/2013 1:47:15 PM R11805 Calcium mg/l 1 7/9/2013 1:47:15 PM R11805 Chromium mg/l 1 7/9/2013 1:47:15 PM R11805 Cobalt mg/l 1 7/9/2013 1:47:15 PM R11805 Copper mg/l 1 7/9/2013 1:47:15 PM R11805 Iron mg/l 1 7/9/2013 1:47:15 PM R11805 Magnesium mg/l 1 7/9/2013 1:47:15 PM R11805 Manganese mg/l 1 7/9/2013 1:47:15 PM R11805 Nickel mg/l 1 7/9/2013 1:47:15 PM R11805 Potassium mg/l 1 7/9/2013 1:47:15 PM R11805 Silver mg/l 1 7/9/2013 1:47:15 PM R11805 Sodium mg/l 1 7/9/2013 1:47:15 PM R11805 Vanadium mg/l 1 7/9/2013 1:47:15 PM R11805 Zinc mg/l 1 7/9/2013 1:47:15 PM R11805 EPA 200.8: METALS Analyst: DBD Antimony mg/l 1 7/11/2013 6:31:46 PM R11882 Arsenic mg/l 1 7/16/2013 2:18:41 PM R11967 Lead mg/l 1 7/16/2013 2:18:41 PM R11967 Selenium mg/l 1 7/16/2013 2:18:41 PM R11967 Thallium mg/l 1 7/11/2013 6:31:46 PM R11882 EPA METHOD 8260B: VOLATILES, TABLE I Analyst: CWS 1,2-Dibromo-3-chloropropane 2.0 µg/l 1 6/28/2013 7:30:39 PM R ,2-Dibromoethane (EDB) 1.0 µg/l 1 6/28/2013 7:30:39 PM R11660 Methyl tert-butyl ether (MTBE) 1.0 µg/l 1 6/28/2013 7:30:39 PM R11660 Acetone 10 µg/l 1 6/28/2013 7:30:39 PM R11660 Acrylonitrile 10 µg/l 1 6/28/2013 7:30:39 PM R11660 Benzene 1.0 µg/l 1 6/28/2013 7:30:39 PM R11660 Bromochloromethane 2.0 µg/l 1 6/28/2013 7:30:39 PM R11660 Bromodichloromethane 1.0 µg/l 1 6/28/2013 7:30:39 PM R11660 Refer to the QC Summary report and sample login checklist for flagged QC data and preservation information. Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit Page 10 of 38 O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit

155 Hall Environmental Analysis Laboratory, Inc. CLIENT: City of Las Cruces Project: City of Las Cruces Foothills Landfill Mo Lab ID: 1306B Matrix: AQUEOUS Analytical Report Lab Order 1306B57 Date Reported: 7/30/2013 Client Sample ID: MW-5 Collection Date: 6/26/ :35:00 AM Received Date: 6/27/2013 9:00:00 AM Analyses Result RL Qual Units DF Date Analyzed Batch EPA METHOD 8260B: VOLATILES, TABLE I Bromoform Bromomethane 2-Butanone Carbon disulfide Carbon Tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-dce cis-1,3-dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane 1,2-Dichlorobenzene 1,4-Dichlorobenzene 1,2-Dichloroethane (EDC) 1,1-Dichloroethane 1,1-Dichloroethene 1,2-Dichloropropane Ethylbenzene 2-Hexanone Iodomethane 4-Methyl-2-pentanone Methylene Chloride Styrene 1,1,1,2-Tetrachloroethane 1,1,2,2-Tetrachloroethane Tetrachloroethene (PCE) Toluene trans-1,2-dce trans-1,3-dichloropropene trans-1,4-dichloro-2-butene 1,1,1-Trichloroethane 1,1,2-Trichloroethane Trichloroethene (TCE) Trichlorofluoromethane 1,2,3-Trichloropropane Vinyl acetate Vinyl chloride Analyst: CWS 1.0 µg/l 1 6/28/2013 7:30:39 PM R µg/l 1 6/28/2013 7:30:39 PM R µg/l 1 6/28/2013 7:30:39 PM R µg/l 1 6/28/2013 7:30:39 PM R µg/l 1 6/28/2013 7:30:39 PM R µg/l 1 6/28/2013 7:30:39 PM R µg/l 1 6/28/2013 7:30:39 PM R µg/l 1 6/28/2013 7:30:39 PM R µg/l 1 6/28/2013 7:30:39 PM R µg/l 1 6/28/2013 7:30:39 PM R µg/l 1 6/28/2013 7:30:39 PM R µg/l 1 6/28/2013 7:30:39 PM R µg/l 1 6/28/2013 7:30:39 PM R µg/l 1 6/28/2013 7:30:39 PM R µg/l 1 6/28/2013 7:30:39 PM R µg/l 1 6/28/2013 7:30:39 PM R µg/l 1 6/28/2013 7:30:39 PM R µg/l 1 6/28/2013 7:30:39 PM R µg/l 1 6/28/2013 7:30:39 PM R µg/l 1 6/28/2013 7:30:39 PM R µg/l 1 6/28/2013 7:30:39 PM R µg/l 1 6/28/2013 7:30:39 PM R µg/l 1 6/28/2013 7:30:39 PM R µg/l 1 6/28/2013 7:30:39 PM R µg/l 1 6/28/2013 7:30:39 PM R µg/l 1 6/28/2013 7:30:39 PM R µg/l 1 6/28/2013 7:30:39 PM R µg/l 1 6/28/2013 7:30:39 PM R µg/l 1 6/28/2013 7:30:39 PM R µg/l 1 6/28/2013 7:30:39 PM R µg/l 1 6/28/2013 7:30:39 PM R µg/l 1 6/28/2013 7:30:39 PM R µg/l 1 6/28/2013 7:30:39 PM R µg/l 1 6/28/2013 7:30:39 PM R µg/l 1 6/28/2013 7:30:39 PM R µg/l 1 6/28/2013 7:30:39 PM R µg/l 1 6/28/2013 7:30:39 PM R µg/l 1 6/28/2013 7:30:39 PM R µg/l 1 6/28/2013 7:30:39 PM R µg/l 1 6/28/2013 7:30:39 PM R11660 Refer to the QC Summary report and sample login checklist for flagged QC data and preservation information. Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit Page 11 of 38 O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit

156 Hall Environmental Analysis Laboratory, Inc. CLIENT: City of Las Cruces Project: City of Las Cruces Foothills Landfill Mo Lab ID: 1306B Matrix: AQUEOUS Analytical Report Lab Order 1306B57 Date Reported: 7/30/2013 Client Sample ID: MW-5 Collection Date: 6/26/ :35:00 AM Received Date: 6/27/2013 9:00:00 AM Analyses Result RL Qual Units DF Date Analyzed Batch EPA METHOD 8260B: VOLATILES, TABLE I Xylenes, Total Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromofluorobenzene Surr: Dibromofluoromethane Surr: Toluene-d8 TOTAL PHENOLICS BY SW µg/l 1 6/28/2013 7:30:39 PM Analyst: CWS R %REC 1 6/28/2013 7:30:39 PM R %REC 1 6/28/2013 7:30:39 PM R %REC 1 6/28/2013 7:30:39 PM R %REC 1 6/28/2013 7:30:39 PM R11660 Analyst: SCC Phenolics, Total Recoverable 2.5 µg/l 1 7/9/ EPA METHOD 9060 TOC Total Organic Carbon SM2510B: SPECIFIC COUCTANCE Conductivity SM 4500 NH3: AMMONIA Nitrogen, Ammonia SM4500-H+B: PH Analyst: LRW mg/l 1 7/8/2013 8:52:50 PM R11792 Analyst: JML µmhos/cm 1 6/27/2013 3:45:38 PM R mg/l 1 7/11/2013 6:43:00 AM Analyst: TMG R11855 Analyst: JML ph H ph units 1 6/27/2013 3:45:38 PM R11633 SM2320B: ALKALINITY Bicarbonate (As CaCO3) Carbonate (As CaCO3) Total Alkalinity (as CaCO3) SM2540C MOD: TOTAL DISSOLVED SOLIDS Total Dissolved Solids Analyst: JML mg/l CaCO3 1 6/27/2013 3:45:38 PM R mg/l CaCO3 1 6/27/2013 3:45:38 PM R mg/l CaCO3 1 6/27/2013 3:45:38 PM R11633 Analyst: KS mg/l 1 6/30/2013 4:41:00 PM 8151 Refer to the QC Summary report and sample login checklist for flagged QC data and preservation information. Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit Page 12 of 38 O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit

157 Hall Environmental Analysis Laboratory, Inc. CLIENT: City of Las Cruces Project: City of Las Cruces Foothills Landfill Mo Lab ID: 1306B Matrix: AQUEOUS Analytical Report Lab Order 1306B57 Date Reported: 7/30/2013 Client Sample ID: MW-9 Collection Date: 6/26/2013 2:12:00 PM Received Date: 6/27/2013 9:00:00 AM Analyses Result RL Qual Units DF Date Analyzed Batch EPA METHOD 504.1: EDB/DBCP 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane EPA METHOD 300.0: ANIONS Analyst: LRW 0.10 µg/l 1 7/1/2013 2:17:33 PM µg/l 1 7/1/2013 2:17:33 PM 8176 Analyst: JRR Chloride * mg/l 50 7/1/ :09:14 PM R11694 Nitrogen, Nitrate (As N) Sulfate EPA METHOD 200.7: METALS Barium Beryllium Cadmium Calcium Chromium Cobalt Copper Iron Magnesium 0.10 mg/l 1 6/28/2013 3:01:25 AM R mg/l 20 6/28/2013 3:13:50 AM R11629 Analyst: JLF mg/l 1 7/9/2013 1:49:41 PM R mg/l mg/l 1 7/9/2013 1:49:41 PM 7/9/2013 1:49:41 PM R11805 R mg/l 5 7/9/2013 2:24:09 PM R mg/l mg/l mg/l 1 7/9/2013 1:49:41 PM 7/9/2013 1:49:41 PM 7/9/2013 1:49:41 PM R11805 R11805 R mg/l 1 7/9/2013 1:49:41 PM R mg/l 1 7/9/2013 1:49:41 PM R11805 Manganese * mg/l 1 7/9/2013 1:49:41 PM R11805 Nickel * mg/l 1 7/9/2013 1:49:41 PM R11805 Potassium Silver Sodium Vanadium Zinc EPA 200.8: METALS Antimony Arsenic Lead Selenium Thallium EPA METHOD 8260B: VOLATILES, TABLE I 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane (EDB) Methyl tert-butyl ether (MTBE) Acetone Acrylonitrile Benzene Bromochloromethane Bromodichloromethane mg/l 1 7/9/2013 1:49:41 PM R mg/l 5 7/9/2013 2:24:09 PM R mg/l 5 7/9/2013 2:24:09 PM R mg/l 1 7/9/2013 1:49:41 PM R mg/l 1 7/9/2013 1:49:41 PM R mg/l 1 7/17/2013 4:44:16 PM Analyst: DBD R mg/l 1 7/16/2013 2:21:20 PM R mg/l 1 7/16/2013 2:21:20 PM R mg/l 1 7/16/2013 2:21:20 PM R mg/l µg/l µg/l µg/l 1 10 µg/l 1 10 µg/l µg/l µg/l µg/l 1 7/17/2013 4:44:16 PM 6/28/2013 7:59:23 PM 6/28/2013 7:59:23 PM 6/28/2013 7:59:23 PM 6/28/2013 7:59:23 PM 6/28/2013 7:59:23 PM 6/28/2013 7:59:23 PM 6/28/2013 7:59:23 PM 6/28/2013 7:59:23 PM R12020 Analyst: CWS Refer to the QC Summary report and sample login checklist for flagged QC data and preservation information. R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit Page 13 of 38 O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit

158 Hall Environmental Analysis Laboratory, Inc. CLIENT: City of Las Cruces Project: City of Las Cruces Foothills Landfill Mo Lab ID: 1306B Matrix: AQUEOUS Analytical Report Lab Order 1306B57 Date Reported: 7/30/2013 Client Sample ID: MW-9 Collection Date: 6/26/2013 2:12:00 PM Received Date: 6/27/2013 9:00:00 AM Analyses Result RL Qual Units DF Date Analyzed Batch EPA METHOD 8260B: VOLATILES, TABLE I Analyst: CWS Bromoform Bromomethane 2-Butanone Carbon disulfide Carbon Tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-dce cis-1,3-dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane 1,2-Dichlorobenzene 1,4-Dichlorobenzene 1,2-Dichloroethane (EDC) 1,1-Dichloroethane 1,1-Dichloroethene 1,2-Dichloropropane Ethylbenzene 2-Hexanone Iodomethane 4-Methyl-2-pentanone Methylene Chloride Styrene 1,1,1,2-Tetrachloroethane 1,1,2,2-Tetrachloroethane Tetrachloroethene (PCE) Toluene trans-1,2-dce trans-1,3-dichloropropene trans-1,4-dichloro-2-butene 1,1,1-Trichloroethane 1,1,2-Trichloroethane Trichloroethene (TCE) Trichlorofluoromethane 1,2,3-Trichloropropane Vinyl acetate Vinyl chloride 1.0 µg/l µg/l 1 10 µg/l 1 10 µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l 1 10 µg/l 1 10 µg/l 1 10 µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l 1 10 µg/l µg/l µg/l µg/l µg/l µg/l 1 10 µg/l µg/l 1 6/28/2013 7:59:23 PM 6/28/2013 7:59:23 PM 6/28/2013 7:59:23 PM 6/28/2013 7:59:23 PM 6/28/2013 7:59:23 PM 6/28/2013 7:59:23 PM 6/28/2013 7:59:23 PM 6/28/2013 7:59:23 PM 6/28/2013 7:59:23 PM 6/28/2013 7:59:23 PM 6/28/2013 7:59:23 PM 6/28/2013 7:59:23 PM 6/28/2013 7:59:23 PM 6/28/2013 7:59:23 PM 6/28/2013 7:59:23 PM 6/28/2013 7:59:23 PM 6/28/2013 7:59:23 PM 6/28/2013 7:59:23 PM 6/28/2013 7:59:23 PM 6/28/2013 7:59:23 PM 6/28/2013 7:59:23 PM 6/28/2013 7:59:23 PM 6/28/2013 7:59:23 PM 6/28/2013 7:59:23 PM 6/28/2013 7:59:23 PM 6/28/2013 7:59:23 PM 6/28/2013 7:59:23 PM 6/28/2013 7:59:23 PM 6/28/2013 7:59:23 PM 6/28/2013 7:59:23 PM 6/28/2013 7:59:23 PM 6/28/2013 7:59:23 PM 6/28/2013 7:59:23 PM 6/28/2013 7:59:23 PM 6/28/2013 7:59:23 PM 6/28/2013 7:59:23 PM 6/28/2013 7:59:23 PM 6/28/2013 7:59:23 PM 6/28/2013 7:59:23 PM 6/28/2013 7:59:23 PM R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 R11660 Refer to the QC Summary report and sample login checklist for flagged QC data and preservation information. Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit Page 14 of 38 O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit

159 Hall Environmental Analysis Laboratory, Inc. CLIENT: City of Las Cruces Project: City of Las Cruces Foothills Landfill Mo Lab ID: 1306B Matrix: AQUEOUS Analytical Report Lab Order 1306B57 Date Reported: 7/30/2013 Client Sample ID: MW-9 Collection Date: 6/26/2013 2:12:00 PM Received Date: 6/27/2013 9:00:00 AM Analyses Result RL Qual Units DF Date Analyzed Batch EPA METHOD 8260B: VOLATILES, TABLE I Xylenes, Total Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromofluorobenzene Surr: Dibromofluoromethane Surr: Toluene-d8 TOTAL PHENOLICS BY SW µg/l 1 6/28/2013 7:59:23 PM Analyst: CWS R %REC 1 6/28/2013 7:59:23 PM R %REC 1 6/28/2013 7:59:23 PM R %REC 1 6/28/2013 7:59:23 PM R %REC 1 6/28/2013 7:59:23 PM R11660 Analyst: SCC Phenolics, Total Recoverable 2.5 µg/l 1 7/9/ EPA METHOD 9060 TOC Total Organic Carbon SM2510B: SPECIFIC COUCTANCE Conductivity SM 4500 NH3: AMMONIA Nitrogen, Ammonia SM4500-H+B: PH 1.0 mg/l 1 7/8/2013 9:09:35 PM Analyst: LRW R11792 Analyst: JML µmhos/cm 1 6/27/2013 3:59:26 PM R mg/l 1 7/11/2013 6:43:00 AM Analyst: TMG R11855 Analyst: JML ph H ph units 1 6/27/2013 3:59:26 PM R11633 SM2320B: ALKALINITY Bicarbonate (As CaCO3) Carbonate (As CaCO3) Total Alkalinity (as CaCO3) SM2540C MOD: TOTAL DISSOLVED SOLIDS Analyst: JML mg/l CaCO3 1 6/27/2013 3:59:26 PM R mg/l CaCO3 1 6/27/2013 3:59:26 PM R mg/l CaCO3 1 6/27/2013 3:59:26 PM R11633 Analyst: KS Total Dissolved Solids * mg/l 1 6/30/2013 4:41:00 PM 8151 Refer to the QC Summary report and sample login checklist for flagged QC data and preservation information. Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit Page 15 of 38 O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit

160 Hall Environmental Analysis Laboratory, Inc. Analytical Report Lab Order 1306B57 Date Reported: 7/30/2013 CLIENT: City of Las Cruces Client Sample ID: Trip Blank Project: City of Las Cruces Foothills Landfill Mo Collection Date: Lab ID: 1306B Matrix: TRIP BLANK Received Date: 6/27/2013 9:00:00 AM Analyses Result RL Qual Units DF Date Analyzed Batch EPA METHOD 504.1: EDB/DBCP 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane EPA METHOD 8260B: VOLATILES, TABLE I 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane (EDB) Methyl tert-butyl ether (MTBE) Acetone Acrylonitrile Benzene Bromochloromethane Bromodichloromethane Bromoform Bromomethane 2-Butanone Carbon disulfide Carbon Tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-dce cis-1,3-dichloropropene Dibromochloromethane Dibromomethane Dichlorodifluoromethane 1,2-Dichlorobenzene 1,4-Dichlorobenzene 1,2-Dichloroethane (EDC) 1,1-Dichloroethane 1,1-Dichloroethene 1,2-Dichloropropane Ethylbenzene 2-Hexanone Iodomethane 4-Methyl-2-pentanone Methylene Chloride Styrene 1,1,1,2-Tetrachloroethane 1,1,2,2-Tetrachloroethane Tetrachloroethene (PCE) Analyst: LRW 0.10 µg/l 1 7/1/2013 2:31:20 PM µg/l 1 7/1/2013 2:31:20 PM 8176 Analyst: CWS 2.0 µg/l 1 6/28/2013 8:28:04 PM R µg/l 1 6/28/2013 8:28:04 PM R µg/l 1 6/28/2013 8:28:04 PM R µg/l 1 6/28/2013 8:28:04 PM R µg/l 1 6/28/2013 8:28:04 PM R µg/l 1 6/28/2013 8:28:04 PM R µg/l 1 6/28/2013 8:28:04 PM R µg/l 1 6/28/2013 8:28:04 PM R µg/l 1 6/28/2013 8:28:04 PM R µg/l 1 6/28/2013 8:28:04 PM R µg/l 1 6/28/2013 8:28:04 PM R µg/l 1 6/28/2013 8:28:04 PM R µg/l 1 6/28/2013 8:28:04 PM R µg/l 1 6/28/2013 8:28:04 PM R µg/l 1 6/28/2013 8:28:04 PM R µg/l 1 6/28/2013 8:28:04 PM R µg/l 1 6/28/2013 8:28:04 PM R µg/l 1 6/28/2013 8:28:04 PM R µg/l 1 6/28/2013 8:28:04 PM R µg/l 1 6/28/2013 8:28:04 PM R µg/l 1 6/28/2013 8:28:04 PM R µg/l 1 6/28/2013 8:28:04 PM R µg/l 1 6/28/2013 8:28:04 PM R µg/l 1 6/28/2013 8:28:04 PM R µg/l 1 6/28/2013 8:28:04 PM R µg/l 1 6/28/2013 8:28:04 PM R µg/l 1 6/28/2013 8:28:04 PM R µg/l 1 6/28/2013 8:28:04 PM R µg/l 1 6/28/2013 8:28:04 PM R µg/l 1 6/28/2013 8:28:04 PM R µg/l 1 6/28/2013 8:28:04 PM R µg/l 1 6/28/2013 8:28:04 PM R µg/l 1 6/28/2013 8:28:04 PM R µg/l 1 6/28/2013 8:28:04 PM R µg/l 1 6/28/2013 8:28:04 PM R µg/l 1 6/28/2013 8:28:04 PM R µg/l 1 6/28/2013 8:28:04 PM R11660 Refer to the QC Summary report and sample login checklist for flagged QC data and preservation information. Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit Page 16 of 38 O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit

161 Hall Environmental Analysis Laboratory, Inc. Analytical Report Lab Order 1306B57 Date Reported: 7/30/2013 CLIENT: City of Las Cruces Client Sample ID: Trip Blank Project: City of Las Cruces Foothills Landfill Mo Collection Date: Lab ID: 1306B Matrix: TRIP BLANK Received Date: 6/27/2013 9:00:00 AM Analyses Result RL Qual Units DF Date Analyzed Batch EPA METHOD 8260B: VOLATILES, TABLE I Toluene trans-1,2-dce trans-1,3-dichloropropene trans-1,4-dichloro-2-butene 1,1,1-Trichloroethane 1,1,2-Trichloroethane Trichloroethene (TCE) Trichlorofluoromethane 1,2,3-Trichloropropane Vinyl acetate Vinyl chloride Xylenes, Total Surr: 1,2-Dichloroethane-d4 Surr: 4-Bromofluorobenzene Surr: Dibromofluoromethane Surr: Toluene-d8 Analyst: CWS 1.0 µg/l 1 6/28/2013 8:28:04 PM R µg/l 1 6/28/2013 8:28:04 PM R µg/l 1 6/28/2013 8:28:04 PM R µg/l 1 6/28/2013 8:28:04 PM R µg/l 1 6/28/2013 8:28:04 PM R µg/l 1 6/28/2013 8:28:04 PM R µg/l 1 6/28/2013 8:28:04 PM R µg/l 1 6/28/2013 8:28:04 PM R µg/l 1 6/28/2013 8:28:04 PM R µg/l 1 6/28/2013 8:28:04 PM R µg/l 1 6/28/2013 8:28:04 PM R µg/l 1 6/28/2013 8:28:04 PM R %REC 1 6/28/2013 8:28:04 PM R %REC 1 6/28/2013 8:28:04 PM R %REC 1 6/28/2013 8:28:04 PM R %REC 1 6/28/2013 8:28:04 PM R11660 Refer to the QC Summary report and sample login checklist for flagged QC data and preservation information. Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit Page 17 of 38 O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit

162 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1306B57 30-Jul-13 Client: Project: City of Las Cruces City of Las Cruces Foothills Landfill Monitoring Sample ID MB-8170 Client ID: PBW Batch ID: 8170 RunNo: /1/2013 SampType: MBLK Analysis Date: 7/2/2013 TestCode: EPA Method 200.7: Metals SeqNo: Barium Beryllium Cadmium Calcium 1.0 Chromium Cobalt Iron Magnesium 1.0 Manganese Nickel Potassium 1.0 Silver Sodium 1.0 Vanadium Zinc Sample ID LCS-8170 Client ID: LCSW Batch ID: 8170 RunNo: /1/2013 SampType: LCS Analysis Date: 7/2/2013 TestCode: EPA Method 200.7: Metals SeqNo: Barium Beryllium Cadmium Calcium Chromium Cobalt Iron Magnesium Manganese Nickel Potassium Silver Sodium Vanadium Zinc Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit Page 18 of 38

163 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1306B57 30-Jul-13 Client: Project: City of Las Cruces City of Las Cruces Foothills Landfill Monitoring Sample ID MB-8170 Client ID: PBW Batch ID: 8170 RunNo: /1/2013 SampType: MBLK Analysis Date: 7/3/2013 TestCode: EPA Method 200.7: Metals SeqNo: Copper Sample ID LCS-8170 Client ID: LCSW Batch ID: 8170 RunNo: /1/2013 SampType: LCS Analysis Date: 7/3/2013 TestCode: EPA Method 200.7: Metals SeqNo: Copper Sample ID 1306B57-001CMS Client ID: MW-8 Batch ID: 8170 RunNo: /1/2013 SampType: MS Analysis Date: 7/3/2013 TestCode: EPA Method 200.7: Metals SeqNo: Barium Beryllium Cadmium Calcium Chromium Cobalt Copper Iron Magnesium Manganese Nickel Potassium Silver Sodium Vanadium Zinc Sample ID 1306B57-001CMSD Client ID: MW-8 Batch ID: 8170 RunNo: /1/2013 SampType: MSD Analysis Date: 7/3/2013 TestCode: EPA Method 200.7: Metals SeqNo: Barium Beryllium Cadmium Calcium Chromium Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit Page 19 of 38

164 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1306B57 30-Jul-13 Client: Project: City of Las Cruces City of Las Cruces Foothills Landfill Monitoring Sample ID 1306B57-001CMSD Client ID: MW-8 Batch ID: 8170 RunNo: /1/2013 SampType: MSD Analysis Date: 7/3/2013 TestCode: EPA Method 200.7: Metals SeqNo: Cobalt Copper Iron Magnesium Manganese Nickel Potassium Silver Sodium Vanadium Zinc Sample ID MB Client ID: PBW Batch ID: R11805 RunNo: SampType: MBLK Analysis Date: 7/9/2013 TestCode: EPA Method 200.7: Metals SeqNo: Barium Beryllium Cadmium Calcium 1.0 Chromium Cobalt Copper Iron Magnesium 1.0 Manganese Nickel Potassium 1.0 Silver Sodium 1.0 Vanadium Zinc Sample ID LCS Client ID: LCSW Batch ID: R11805 RunNo: SampType: LCS Analysis Date: 7/9/2013 TestCode: EPA Method 200.7: Metals SeqNo: Barium Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit Page 20 of 38

165 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1306B57 30-Jul-13 Client: Project: City of Las Cruces City of Las Cruces Foothills Landfill Monitoring Sample ID LCS Client ID: LCSW Batch ID: R11805 RunNo: SampType: LCS Analysis Date: 7/9/2013 TestCode: EPA Method 200.7: Metals SeqNo: Beryllium Cadmium Calcium Chromium Cobalt Copper Iron Magnesium Manganese Nickel Potassium Silver Sodium Vanadium Zinc Sample ID MB Client ID: PBW Batch ID: R11805 RunNo: SampType: MBLK Analysis Date: 7/9/2013 TestCode: EPA Method 200.7: Metals SeqNo: Barium Beryllium Cadmium Calcium 1.0 Chromium Cobalt Copper Iron Magnesium 1.0 Manganese Nickel Potassium 1.0 Silver Sodium 1.0 Vanadium Zinc Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit Page 21 of 38

166 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1306B57 30-Jul-13 Client: Project: City of Las Cruces City of Las Cruces Foothills Landfill Monitoring Sample ID LCS Client ID: LCSW Batch ID: R11805 RunNo: SampType: LCS Analysis Date: 7/9/2013 TestCode: EPA Method 200.7: Metals SeqNo: Barium Beryllium Cadmium Calcium Chromium Cobalt Copper Iron Magnesium Manganese Nickel Potassium Silver Sodium Vanadium Zinc Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit Page 22 of 38

167 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1306B57 30-Jul-13 Client: Project: City of Las Cruces City of Las Cruces Foothills Landfill Monitoring Sample ID MB-8170 Client ID: PBW Batch ID: 8170 RunNo: /1/2013 SampType: MBLK Analysis Date: 7/10/2013 TestCode: EPA 200.8: Metals SeqNo: Arsenic Lead Selenium Thallium Sample ID LLLCS-8170 Client ID: BatchQC Batch ID: 8170 RunNo: /1/2013 SampType: LCSLL Analysis Date: 7/10/2013 TestCode: EPA 200.8: Metals SeqNo: Arsenic Lead Selenium Thallium Sample ID LLLCS-8170 Client ID: BatchQC Batch ID: 8170 RunNo: /1/2013 SampType: LCSLL Analysis Date: 7/11/2013 TestCode: EPA 200.8: Metals SeqNo: Antimony S Sample ID MB-8170 Client ID: PBW Batch ID: 8170 RunNo: /1/2013 SampType: MBLK Analysis Date: 7/11/2013 TestCode: EPA 200.8: Metals SeqNo: Antimony Sample ID LCS Client ID: LCSW Batch ID: R11882 RunNo: SampType: LCS Analysis Date: 7/11/2013 TestCode: EPA 200.8: Metals SeqNo: Antimony Thallium Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit Page 23 of 38

168 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1306B57 30-Jul-13 Client: Project: City of Las Cruces City of Las Cruces Foothills Landfill Monitoring Sample ID MB Client ID: PBW Batch ID: R11882 RunNo: SampType: MBLK Analysis Date: 7/11/2013 TestCode: EPA 200.8: Metals SeqNo: Antimony Thallium Sample ID LCS Client ID: LCSW Batch ID: R11967 RunNo: SampType: LCS Analysis Date: 7/16/2013 TestCode: EPA 200.8: Metals SeqNo: Arsenic Lead Selenium Sample ID MB Client ID: PBW Batch ID: R11967 RunNo: SampType: MBLK Analysis Date: 7/16/2013 TestCode: EPA 200.8: Metals SeqNo: Arsenic Lead Selenium Sample ID LCS Client ID: LCSW Batch ID: R11967 RunNo: SampType: LCS Analysis Date: 7/16/2013 TestCode: EPA 200.8: Metals SeqNo: Arsenic Lead Selenium Sample ID LCS Client ID: LCSW Batch ID: R11967 RunNo: SampType: LCS Analysis Date: 7/16/2013 TestCode: EPA 200.8: Metals SeqNo: Arsenic Lead Selenium Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit Page 24 of 38

169 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1306B57 30-Jul-13 Client: Project: City of Las Cruces City of Las Cruces Foothills Landfill Monitoring Sample ID LCS Client ID: LCSW Batch ID: R11967 RunNo: SampType: LCS Analysis Date: 7/16/2013 TestCode: EPA 200.8: Metals SeqNo: Lead Sample ID MB Client ID: PBW Batch ID: R11967 RunNo: SampType: MBLK Analysis Date: 7/16/2013 TestCode: EPA 200.8: Metals SeqNo: Arsenic Lead Selenium Sample ID MB Client ID: PBW Batch ID: R11967 RunNo: SampType: MBLK Analysis Date: 7/16/2013 TestCode: EPA 200.8: Metals SeqNo: Arsenic Lead Selenium Sample ID MB Client ID: PBW Batch ID: R11967 RunNo: SampType: MBLK Analysis Date: 7/16/2013 TestCode: EPA 200.8: Metals SeqNo: Lead Sample ID LCS Client ID: LCSW Batch ID: R12020 RunNo: SampType: LCS Analysis Date: 7/17/2013 TestCode: EPA 200.8: Metals SeqNo: Antimony Thallium Sample ID MB Client ID: PBW Batch ID: R12020 RunNo: SampType: MBLK Analysis Date: 7/17/2013 TestCode: EPA 200.8: Metals SeqNo: Antimony Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit Page 25 of 38

170 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1306B57 30-Jul-13 Client: Project: City of Las Cruces City of Las Cruces Foothills Landfill Monitoring Sample ID MB Client ID: PBW Batch ID: R12020 RunNo: SampType: MBLK Analysis Date: 7/17/2013 TestCode: EPA 200.8: Metals SeqNo: Thallium Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit Page 26 of 38

171 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1306B57 30-Jul-13 Client: Project: City of Las Cruces City of Las Cruces Foothills Landfill Monitoring Sample ID MB Client ID: PBW Batch ID: R11629 RunNo: SampType: MBLK Analysis Date: 6/27/2013 TestCode: EPA Method 300.0: Anions SeqNo: Chloride 0.50 Nitrogen, Nitrate (As N) 0.10 Sulfate 0.50 Sample ID LCS Client ID: LCSW Batch ID: R11629 RunNo: SampType: LCS Analysis Date: 6/27/2013 TestCode: EPA Method 300.0: Anions SeqNo: Chloride Nitrogen, Nitrate (As N) Sulfate Sample ID MB Client ID: PBW Batch ID: R11629 RunNo: SampType: MBLK Analysis Date: 6/27/2013 TestCode: EPA Method 300.0: Anions SeqNo: Chloride 0.50 Nitrogen, Nitrate (As N) 0.10 Sulfate 0.50 Sample ID LCS Client ID: LCSW Batch ID: R11629 RunNo: SampType: LCS Analysis Date: 6/27/2013 TestCode: EPA Method 300.0: Anions SeqNo: Chloride Nitrogen, Nitrate (As N) Sulfate Sample ID MB Client ID: PBW Batch ID: R11694 RunNo: SampType: MBLK Analysis Date: 7/1/2013 TestCode: EPA Method 300.0: Anions SeqNo: Chloride 0.50 Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit Page 27 of 38

172 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1306B57 30-Jul-13 Client: Project: City of Las Cruces City of Las Cruces Foothills Landfill Monitoring Sample ID LCS Client ID: LCSW Batch ID: R11694 RunNo: SampType: LCS Analysis Date: 7/1/2013 TestCode: EPA Method 300.0: Anions SeqNo: Chloride Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit Page 28 of 38

173 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1306B57 30-Jul-13 Client: Project: City of Las Cruces City of Las Cruces Foothills Landfill Monitoring Sample ID MB-8176 Client ID: PBW Batch ID: 8176 RunNo: /1/2013 SampType: MBLK Analysis Date: 7/1/2013 TestCode: EPA Method 504.1: EDB/DBCP SeqNo: Units: µg/l 1,2-Dibromo-3-chloropropane ,2-Dibromoethane Sample ID LCS-8176 Client ID: LCSW Batch ID: 8176 RunNo: /1/2013 SampType: LCS Analysis Date: 7/1/2013 TestCode: EPA Method 504.1: EDB/DBCP SeqNo: Units: µg/l 1,2-Dibromo-3-chloropropane ,2-Dibromoethane Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit Page 29 of 38

174 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1306B57 30-Jul-13 Client: Project: City of Las Cruces City of Las Cruces Foothills Landfill Monitoring Sample ID 5ml rb Client ID: PBW Batch ID: R11660 RunNo: SampType: MBLK Analysis Date: 6/28/2013 TestCode: EPA Method 8260B: Volatiles, Table I SeqNo: Units: µg/l 1,2-Dibromo-3-chloropropane 2.0 1,2-Dibromoethane (EDB) 1.0 Methyl tert-butyl ether (MTBE) 1.0 Acetone 10 Acrylonitrile 10 Benzene 1.0 Bromochloromethane 2.0 Bromodichloromethane 1.0 Bromoform 1.0 Bromomethane Butanone 10 Carbon disulfide 10 Carbon Tetrachloride 1.0 Chlorobenzene 1.0 Chloroethane 2.0 Chloroform 1.0 Chloromethane 1.0 cis-1,2-dce 1.0 cis-1,3-dichloropropene 1.0 Dibromochloromethane 1.0 Dibromomethane 1.0 1,2-Dichlorobenzene 1.0 1,4-Dichlorobenzene 1.0 1,2-Dichloroethane (EDC) 1.0 1,1-Dichloroethane 1.0 1,1-Dichloroethene 1.0 1,2-Dichloropropane 0.50 Ethylbenzene Hexanone 10 Iodomethane 10 4-Methyl-2-pentanone 10 Methylene Chloride 1.0 Styrene 1.0 1,1,1,2-Tetrachloroethane 1.0 1,1,2,2-Tetrachloroethane 1.0 Tetrachloroethene (PCE) 0.50 Toluene 1.0 trans-1,2-dce 1.0 trans-1,3-dichloropropene 1.0 trans-1,4-dichloro-2-butene 10 Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit Page 30 of 38

175 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1306B57 30-Jul-13 Client: Project: City of Las Cruces City of Las Cruces Foothills Landfill Monitoring Sample ID 5ml rb Client ID: PBW Batch ID: R11660 RunNo: SampType: MBLK Analysis Date: 6/28/2013 TestCode: EPA Method 8260B: Volatiles, Table I SeqNo: Units: µg/l 1,1,1-Trichloroethane 1.0 1,1,2-Trichloroethane 1.0 Trichloroethene (TCE) 1.0 Trichlorofluoromethane 1.0 1,2,3-Trichloropropane 1.0 Vinyl acetate 10 Vinyl chloride 0.40 Xylenes, Total 2.0 Surr: 1,2-Dichloroethane-d Surr: 4-Bromofluorobenzene Surr: Dibromofluoromethane Surr: Toluene-d Sample ID 100ng lcs Client ID: LCSW Batch ID: R11660 RunNo: SampType: LCS Analysis Date: 6/28/2013 TestCode: EPA Method 8260B: Volatiles, Table I SeqNo: Units: µg/l Benzene Chlorobenzene ,1-Dichloroethene Toluene Trichloroethene (TCE) Surr: 1,2-Dichloroethane-d Surr: 4-Bromofluorobenzene Surr: Dibromofluoromethane Surr: Toluene-d Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit Page 31 of 38

176 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1306B57 30-Jul-13 Client: Project: City of Las Cruces City of Las Cruces Foothills Landfill Monitoring Sample ID MB Client ID: PBW Batch ID: R11792 RunNo: SampType: MBLK Analysis Date: 7/8/2013 TestCode: EPA Method 9060 TOC SeqNo: Total Organic Carbon 1.0 Sample ID LCS ST Client ID: LCSW Batch ID: R11792 RunNo: SampType: LCS Analysis Date: 7/8/2013 TestCode: EPA Method 9060 TOC SeqNo: Total Organic Carbon Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit Page 32 of 38

177 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1306B57 30-Jul-13 Client: Project: City of Las Cruces City of Las Cruces Foothills Landfill Monitoring Sample ID MB-8278 Client ID: PBW Batch ID: 8278 RunNo: /9/2013 SampType: MBLK TestCode: Total Phenolics by SW Analysis Date: 7/9/2013 SeqNo: Units: µg/l Phenolics, Total Recoverable 2.5 Sample ID LCS-8278 Client ID: LCSW Batch ID: 8278 RunNo: /9/2013 SampType: LCS TestCode: Total Phenolics by SW Analysis Date: 7/9/2013 SeqNo: Units: µg/l Phenolics, Total Recoverable Sample ID LCSD-8278 Client ID: LCSS02 Batch ID: 8278 RunNo: /9/2013 SampType: LCSD TestCode: Total Phenolics by SW Analysis Date: 7/9/2013 SeqNo: Units: µg/l Phenolics, Total Recoverable Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit Page 33 of 38

178 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1306B57 30-Jul-13 Client: Project: City of Las Cruces City of Las Cruces Foothills Landfill Monitoring Sample ID 1306b57-004b dup Client ID: MW-5 Batch ID: R11633 RunNo: SampType: dup Analysis Date: 6/27/2013 TestCode: SM2510B: Specific Conductance SeqNo: Units: µmhos/cm Conductivity Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit Page 34 of 38

179 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1306B57 30-Jul-13 Client: Project: City of Las Cruces City of Las Cruces Foothills Landfill Monitoring Sample ID MB Client ID: PBW Batch ID: R11855 RunNo: SampType: MBLK Analysis Date: 7/11/2013 TestCode: SM 4500 NH3: Ammonia SeqNo: Nitrogen, Ammonia 1.0 Sample ID LCS Client ID: LCSW Batch ID: R11855 RunNo: SampType: LCS Analysis Date: 7/11/2013 TestCode: SM 4500 NH3: Ammonia SeqNo: Nitrogen, Ammonia Sample ID 1306B57-001BMS Client ID: MW-8 Batch ID: R11855 RunNo: SampType: MS Analysis Date: 7/11/2013 TestCode: SM 4500 NH3: Ammonia SeqNo: Nitrogen, Ammonia Sample ID 1306B57-001BMSD Client ID: MW-8 Batch ID: R11855 RunNo: SampType: MSD Analysis Date: 7/11/2013 TestCode: SM 4500 NH3: Ammonia SeqNo: Nitrogen, Ammonia Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit Page 35 of 38

180 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1306B57 30-Jul-13 Client: Project: City of Las Cruces City of Las Cruces Foothills Landfill Monitoring Sample ID 1306b57-004b dup SampType: dup TestCode: SM4500-H+B: ph Client ID: MW-5 Batch ID: R11633 RunNo: Analysis Date: 6/27/2013 SeqNo: Units: ph units ph H Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit Page 36 of 38

181 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1306B57 30-Jul-13 Client: Project: City of Las Cruces City of Las Cruces Foothills Landfill Monitoring Sample ID mb-1 Client ID: PBW Batch ID: R11633 RunNo: SampType: mblk Analysis Date: 6/27/2013 TestCode: SM2320B: Alkalinity SeqNo: CaCO3 Total Alkalinity (as CaCO3) 20 Sample ID lcs-1 Client ID: LCSW Batch ID: R11633 RunNo: SampType: lcs Analysis Date: 6/27/2013 TestCode: SM2320B: Alkalinity SeqNo: CaCO3 Total Alkalinity (as CaCO3) Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit Page 37 of 38

182 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1306B57 30-Jul-13 Client: Project: City of Las Cruces City of Las Cruces Foothills Landfill Monitoring Sample ID MB-8151 Client ID: PBW Batch ID: 8151 RunNo: /28/2013 SampType: MBLK Analysis Date: 6/30/2013 TestCode: SM2540C MOD: Total Dissolved Solids SeqNo: Total Dissolved Solids 20.0 Sample ID LCS-8151 Client ID: LCSW Batch ID: 8151 RunNo: /28/2013 SampType: LCS Analysis Date: 6/30/2013 TestCode: SM2540C MOD: Total Dissolved Solids SeqNo: Total Dissolved Solids Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit Page 38 of 38

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186 JSAI Laboratory Results Sample Date (Lab Report Date , Report 1 of 2) JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

187 Hall Environmental Analysis Laboratory 4901 Hawkins NE Albuquerque, NM TEL: FAX: Website: January 17, 2014 Joshua Rosenblatt City of Las Cruces PO Box Las Cruces, NM TEL: (575) FAX (575) RE: City Of Las Cruces Foothills Lanfdill Monitoring Wells OrderNo.: 1312A00 Dear Joshua Rosenblatt: Hall Environmental Analysis Laboratory received 2 sample(s) on 12/20/2013 for the analyses presented in the following report. This report is a revised report and it replaces the original report issued January 13, These were analyzed according to EPA procedures or equivalent. To access our accredited tests please go to or the state specific web sites. See the sample checklist and/or the Chain of Custody for information regarding the sample receipt temperature and preservation. Data qualifiers or a narrative will be provided if the sample analysis or analytical quality control parameters require a flag. All samples are reported as received unless otherwise indicated. Please don't hesitate to contact HEAL for any additional information or clarifications. Sincerely, Andy Freeman Laboratory Manager 4901 Hawkins NE Albuquerque, NM 87109

188 Hall Environmental Analysis Laboratory, Inc. CLIENT: City of Las Cruces Project: City Of Las Cruces Foothills Lanfdill Mo Lab ID: 1312A Matrix: AQUEOUS Analytical Report Lab Order 1312A00 Date Reported: 1/17/2014 Client Sample ID: MW-1 Collection Date: 12/19/2013 9:43:00 AM Received Date: 12/20/ :30:00 AM Analyses Result RL Qual Units DF Date Analyzed Batch EPA METHOD 504.1: EDB/DBCP Analyst: LRW 1,2-Dibromo-3-chloropropane 0.10 H µg/l 1 1/16/ :06:12 AM ,2-Dibromoethane H µg/l 1 1/16/ :06:12 AM EPA METHOD 300.0: ANIONS Chloride Nitrogen, Nitrate (As N) Sulfate EPA METHOD 200.7: METALS Barium Beryllium Cadmium Calcium Chromium Cobalt Copper Iron Magnesium Manganese Nickel Potassium Silver Sodium Vanadium Zinc EPA 200.8: METALS Antimony Arsenic Lead Selenium Thallium EPA METHOD 8260B: VOLATILES, TABLE I Benzene Toluene Ethylbenzene Methyl tert-butyl ether (MTBE) 1,2-Dichloroethane (EDC) 1,2-Dibromoethane (EDB) Acetone Analyst: JRR mg/l 20 12/20/2013 5:19:46 PM R mg/l 1 12/20/2013 5:07:22 PM R mg/l 1 12/20/2013 5:07:22 PM R15728 Analyst: ELS mg/l 1 12/27/2013 1:24:27 PM R mg/l mg/l 1 12/27/2013 1:24:27 PM 12/27/2013 1:24:27 PM R15768 R mg/l 1 12/30/2013 1:53:19 PM R mg/l mg/l mg/l 1 12/27/2013 1:24:27 PM 12/27/2013 1:24:27 PM 12/27/2013 1:24:27 PM R15768 R15768 R mg/l 1 12/30/2013 1:53:19 PM R mg/l 1 12/30/2013 1:53:19 PM R mg/l 1 12/27/2013 1:24:27 PM R mg/l 1 12/27/2013 1:24:27 PM R mg/l 1 12/30/2013 1:53:19 PM R mg/l 1 12/27/2013 1:24:27 PM R mg/l 1 12/30/2013 1:53:19 PM R mg/l mg/l mg/l mg/l mg/l 1 12/27/2013 1:24:27 PM 12/27/2013 1:24:27 PM 1/6/2014 4:27:38 PM 1/6/2014 4:27:38 PM 1/6/2014 4:27:38 PM R15768 R15768 Analyst: DBD R15909 R15909 R mg/l 1 1/8/2014 3:05:52 PM R mg/l µg/l µg/l µg/l µg/l µg/l µg/l 1 10 µg/l 1 1/6/2014 4:27:38 PM R15909 Analyst: DJF 12/22/2013 8:07:30 PM 12/22/2013 8:07:30 PM 12/22/2013 8:07:30 PM 12/22/2013 8:07:30 PM 12/22/2013 8:07:30 PM 12/22/2013 8:07:30 PM 12/22/2013 8:07:30 PM Refer to the QC Summary report and sample login checklist for flagged QC data and preservation information. R15681 R15681 R15681 R15681 R15681 R15681 R15681 Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit Page 1 of 21 O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit S Spike Recovery outside accepted recovery limits

189 Hall Environmental Analysis Laboratory, Inc. CLIENT: City of Las Cruces Project: City Of Las Cruces Foothills Lanfdill Mo Lab ID: 1312A Matrix: AQUEOUS Analytical Report Lab Order 1312A00 Date Reported: 1/17/2014 Client Sample ID: MW-1 Collection Date: 12/19/2013 9:43:00 AM Received Date: 12/20/ :30:00 AM Analyses Result RL Qual Units DF Date Analyzed Batch EPA METHOD 8260B: VOLATILES, TABLE I Bromodichloromethane Bromoform Bromomethane 2-Butanone Carbon disulfide Carbon Tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-dce cis-1,3-dichloropropene 1,2-Dibromo-3-chloropropane Dibromochloromethane Dibromomethane 1,2-Dichlorobenzene 1,4-Dichlorobenzene Dichlorodifluoromethane 1,1-Dichloroethane 1,1-Dichloroethene 1,2-Dichloropropane 2-Hexanone 4-Methyl-2-pentanone Methylene Chloride Styrene 1,1,1,2-Tetrachloroethane 1,1,2,2-Tetrachloroethane Tetrachloroethene (PCE) trans-1,2-dce trans-1,3-dichloropropene 1,1,1-Trichloroethane 1,1,2-Trichloroethane Trichloroethene (TCE) Trichlorofluoromethane 1,2,3-Trichloropropane Vinyl chloride Xylenes, Total Acrylonitrile Bromochloromethane Analyst: DJF 1.0 µg/l 1 12/22/2013 8:07:30 PM R µg/l 1 12/22/2013 8:07:30 PM R µg/l 1 12/22/2013 8:07:30 PM R µg/l 1 12/22/2013 8:07:30 PM R µg/l 1 12/22/2013 8:07:30 PM R µg/l 1 12/22/2013 8:07:30 PM R µg/l 1 12/22/2013 8:07:30 PM R µg/l 1 12/22/2013 8:07:30 PM R µg/l 1 12/22/2013 8:07:30 PM R µg/l 1 12/22/2013 8:07:30 PM R µg/l 1 12/22/2013 8:07:30 PM R µg/l 1 12/22/2013 8:07:30 PM R µg/l 1 12/22/2013 8:07:30 PM R µg/l 1 12/22/2013 8:07:30 PM R µg/l 1 12/22/2013 8:07:30 PM R µg/l 1 12/22/2013 8:07:30 PM R µg/l 1 12/22/2013 8:07:30 PM R µg/l 1 12/23/ :17:20 AM R µg/l 1 12/22/2013 8:07:30 PM R µg/l 1 12/22/2013 8:07:30 PM R µg/l 1 12/22/2013 8:07:30 PM R µg/l 1 12/22/2013 8:07:30 PM R µg/l 1 12/22/2013 8:07:30 PM R µg/l 1 12/22/2013 8:07:30 PM R µg/l 1 12/22/2013 8:07:30 PM R µg/l 1 12/22/2013 8:07:30 PM R µg/l 1 12/22/2013 8:07:30 PM R µg/l 1 12/22/2013 8:07:30 PM R µg/l 1 12/22/2013 8:07:30 PM R µg/l 1 12/22/2013 8:07:30 PM R µg/l 1 12/22/2013 8:07:30 PM R µg/l 1 12/22/2013 8:07:30 PM R µg/l 1 12/22/2013 8:07:30 PM R µg/l 1 12/22/2013 8:07:30 PM R µg/l 1 12/22/2013 8:07:30 PM R µg/l 1 12/22/2013 8:07:30 PM R µg/l 1 12/22/2013 8:07:30 PM R µg/l 1 12/22/2013 8:07:30 PM R µg/l 1 12/22/2013 8:07:30 PM R15681 Refer to the QC Summary report and sample login checklist for flagged QC data and preservation information. Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit Page 2 of 21 O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit S Spike Recovery outside accepted recovery limits

190 Hall Environmental Analysis Laboratory, Inc. CLIENT: City of Las Cruces Project: City Of Las Cruces Foothills Lanfdill Mo Lab ID: 1312A Matrix: AQUEOUS Analytical Report Lab Order 1312A00 Date Reported: 1/17/2014 Client Sample ID: MW-1 Collection Date: 12/19/2013 9:43:00 AM Received Date: 12/20/ :30:00 AM Analyses Result RL Qual Units DF Date Analyzed Batch EPA METHOD 8260B: VOLATILES, TABLE I Iodomethane trans-1,4-dichloro-2-butene Vinyl acetate Surr: Dibromofluoromethane Surr: 1,2-Dichloroethane-d4 Surr: Toluene-d8 Surr: 4-Bromofluorobenzene TOTAL PHENOLICS BY SW µg/l 1 10 µg/l 1 10 µg/l 1 Analyst: DJF 12/22/2013 8:07:30 PM 12/22/2013 8:07:30 PM 12/22/2013 8:07:30 PM R15681 R15681 R %REC 1 12/22/2013 8:07:30 PM R %REC 1 12/22/2013 8:07:30 PM R %REC 1 12/22/2013 8:07:30 PM R %REC 1 12/22/2013 8:07:30 PM R15681 Analyst: SCC Phenolics, Total Recoverable 2.5 µg/l 1 12/23/ EPA METHOD 9060 TOC Total Organic Carbon SM2510B: SPECIFIC COUCTANCE Conductivity SM 4500 NH3: AMMONIA Nitrogen, Ammonia SM4500-H+B: PH Analyst: JDC mg/l 1 12/23/ :47:21 PM R15700 Analyst: SRM µmhos/cm 1 12/23/2013 4:14:03 PM R mg/l 1 Analyst: TMG 12/27/ :30:00 AM R15765 Analyst: SRM ph H ph units 1 12/23/2013 4:14:03 PM R15709 SM2320B: ALKALINITY Bicarbonate (As CaCO3) Carbonate (As CaCO3) Total Alkalinity (as CaCO3) SM2540C MOD: TOTAL DISSOLVED SOLIDS Total Dissolved Solids Analyst: SRM mg/l CaCO3 1 12/23/2013 4:14:03 PM R mg/l CaCO3 1 12/23/2013 4:14:03 PM R mg/l CaCO3 1 12/23/2013 4:14:03 PM R15709 Analyst: KS mg/l 1 12/27/ :29:00 AM Refer to the QC Summary report and sample login checklist for flagged QC data and preservation information. Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit Page 3 of 21 O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit S Spike Recovery outside accepted recovery limits

191 Hall Environmental Analysis Laboratory, Inc. CLIENT: City of Las Cruces Project: City Of Las Cruces Foothills Lanfdill Mo Lab ID: 1312A Matrix: AQUEOUS Analytical Report Lab Order 1312A00 Date Reported: 1/17/2014 Client Sample ID: MW-2 Collection Date: 12/19/ :47:00 AM Received Date: 12/20/ :30:00 AM Analyses Result RL Qual Units DF Date Analyzed Batch EPA METHOD 504.1: EDB/DBCP Analyst: LRW 1,2-Dibromo-3-chloropropane 0.10 H µg/l 1 1/16/ :20:05 AM ,2-Dibromoethane H µg/l 1 1/16/ :20:05 AM EPA METHOD 300.0: ANIONS Chloride Nitrogen, Nitrate (As N) Sulfate EPA METHOD 200.7: METALS Barium Beryllium Cadmium Calcium Chromium Cobalt Copper Iron Magnesium Manganese Nickel Potassium Silver Sodium Vanadium Zinc EPA 200.8: METALS Antimony Arsenic Lead Selenium Thallium EPA METHOD 8260B: VOLATILES, TABLE I Benzene Toluene Ethylbenzene Methyl tert-butyl ether (MTBE) 1,2-Dichloroethane (EDC) 1,2-Dibromoethane (EDB) Acetone Analyst: JRR mg/l 1 12/20/2013 5:32:11 PM R mg/l 1 12/20/2013 5:32:11 PM R mg/l 1 12/20/2013 5:32:11 PM R15728 Analyst: ELS mg/l 1 12/27/2013 1:27:58 PM R mg/l mg/l 1 12/27/2013 1:27:58 PM 12/27/2013 1:27:58 PM R15768 R mg/l 1 12/30/2013 1:55:07 PM R mg/l mg/l mg/l mg/l 1 12/27/2013 1:27:58 PM 12/27/2013 1:27:58 PM 12/27/2013 1:27:58 PM 12/30/2013 1:55:07 PM R15768 R15768 R15768 R mg/l 1 12/30/2013 1:55:07 PM R mg/l mg/l 1 12/27/2013 1:27:58 PM 12/27/2013 1:27:58 PM R15768 R mg/l 1 12/30/2013 1:55:07 PM R mg/l 1 12/27/2013 1:27:58 PM R mg/l 1 12/30/2013 1:55:07 PM R mg/l mg/l mg/l 1 12/27/2013 1:27:58 PM 12/27/2013 1:27:58 PM 1/6/2014 4:32:09 PM R15768 R15768 Analyst: DBD R mg/l 1 1/6/2014 4:32:09 PM R mg/l mg/l mg/l µg/l µg/l µg/l µg/l µg/l µg/l 1 10 µg/l 1 1/6/2014 4:32:09 PM 1/8/2014 3:08:32 PM 1/6/2014 4:32:09 PM R15909 R15963 R15909 Analyst: DJF 12/22/2013 8:39:20 PM 12/22/2013 8:39:20 PM 12/22/2013 8:39:20 PM 12/22/2013 8:39:20 PM 12/22/2013 8:39:20 PM 12/22/2013 8:39:20 PM 12/22/2013 8:39:20 PM Refer to the QC Summary report and sample login checklist for flagged QC data and preservation information. R15681 R15681 R15681 R15681 R15681 R15681 R15681 Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit Page 4 of 21 O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit S Spike Recovery outside accepted recovery limits

192 Hall Environmental Analysis Laboratory, Inc. CLIENT: City of Las Cruces Project: City Of Las Cruces Foothills Lanfdill Mo Lab ID: 1312A Matrix: AQUEOUS Analytical Report Lab Order 1312A00 Date Reported: 1/17/2014 Client Sample ID: MW-2 Collection Date: 12/19/ :47:00 AM Received Date: 12/20/ :30:00 AM Analyses Result RL Qual Units DF Date Analyzed Batch EPA METHOD 8260B: VOLATILES, TABLE I Bromodichloromethane Bromoform Bromomethane 2-Butanone Carbon disulfide Carbon Tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-dce cis-1,3-dichloropropene 1,2-Dibromo-3-chloropropane Dibromochloromethane Dibromomethane 1,2-Dichlorobenzene 1,4-Dichlorobenzene Dichlorodifluoromethane 1,1-Dichloroethane 1,1-Dichloroethene 1,2-Dichloropropane 2-Hexanone 4-Methyl-2-pentanone Methylene Chloride Styrene 1,1,1,2-Tetrachloroethane 1,1,2,2-Tetrachloroethane Tetrachloroethene (PCE) trans-1,2-dce trans-1,3-dichloropropene 1,1,1-Trichloroethane 1,1,2-Trichloroethane Trichloroethene (TCE) Trichlorofluoromethane 1,2,3-Trichloropropane Vinyl chloride Xylenes, Total Acrylonitrile Bromochloromethane Analyst: DJF 1.0 µg/l 1 12/22/2013 8:39:20 PM R µg/l 1 12/22/2013 8:39:20 PM R µg/l 1 12/22/2013 8:39:20 PM R µg/l 1 12/22/2013 8:39:20 PM R µg/l 1 12/22/2013 8:39:20 PM R µg/l 1 12/22/2013 8:39:20 PM R µg/l 1 12/22/2013 8:39:20 PM R µg/l 1 12/22/2013 8:39:20 PM R µg/l 1 12/22/2013 8:39:20 PM R µg/l 1 12/22/2013 8:39:20 PM R µg/l 1 12/22/2013 8:39:20 PM R µg/l 1 12/22/2013 8:39:20 PM R µg/l 1 12/22/2013 8:39:20 PM R µg/l 1 12/22/2013 8:39:20 PM R µg/l 1 12/22/2013 8:39:20 PM R µg/l 1 12/22/2013 8:39:20 PM R µg/l 1 12/22/2013 8:39:20 PM R µg/l 1 12/23/ :45:56 AM R µg/l 1 12/22/2013 8:39:20 PM R µg/l 1 12/22/2013 8:39:20 PM R µg/l 1 12/22/2013 8:39:20 PM R µg/l 1 12/22/2013 8:39:20 PM R µg/l 1 12/22/2013 8:39:20 PM R µg/l 1 12/22/2013 8:39:20 PM R µg/l 1 12/22/2013 8:39:20 PM R µg/l 1 12/22/2013 8:39:20 PM R µg/l 1 12/22/2013 8:39:20 PM R µg/l 1 12/22/2013 8:39:20 PM R µg/l 1 12/22/2013 8:39:20 PM R µg/l 1 12/22/2013 8:39:20 PM R µg/l 1 12/22/2013 8:39:20 PM R µg/l 1 12/22/2013 8:39:20 PM R µg/l 1 12/22/2013 8:39:20 PM R µg/l 1 12/22/2013 8:39:20 PM R µg/l 1 12/22/2013 8:39:20 PM R µg/l 1 12/22/2013 8:39:20 PM R µg/l 1 12/22/2013 8:39:20 PM R µg/l 1 12/22/2013 8:39:20 PM R µg/l 1 12/22/2013 8:39:20 PM R15681 Refer to the QC Summary report and sample login checklist for flagged QC data and preservation information. Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit Page 5 of 21 O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit S Spike Recovery outside accepted recovery limits

193 Hall Environmental Analysis Laboratory, Inc. CLIENT: City of Las Cruces Project: City Of Las Cruces Foothills Lanfdill Mo Lab ID: 1312A Matrix: AQUEOUS Analytical Report Lab Order 1312A00 Date Reported: 1/17/2014 Client Sample ID: MW-2 Collection Date: 12/19/ :47:00 AM Received Date: 12/20/ :30:00 AM Analyses Result RL Qual Units DF Date Analyzed Batch EPA METHOD 8260B: VOLATILES, TABLE I Iodomethane trans-1,4-dichloro-2-butene Vinyl acetate Surr: Dibromofluoromethane Surr: 1,2-Dichloroethane-d4 Surr: Toluene-d8 Surr: 4-Bromofluorobenzene TOTAL PHENOLICS BY SW µg/l 1 10 µg/l 1 10 µg/l 1 Analyst: DJF 12/22/2013 8:39:20 PM 12/22/2013 8:39:20 PM 12/22/2013 8:39:20 PM R15681 R15681 R %REC 1 12/22/2013 8:39:20 PM R %REC 1 12/22/2013 8:39:20 PM R %REC 1 12/22/2013 8:39:20 PM R %REC 1 12/22/2013 8:39:20 PM R15681 Analyst: SCC Phenolics, Total Recoverable 2.5 µg/l 1 12/23/ EPA METHOD 9060 TOC Total Organic Carbon SM2510B: SPECIFIC COUCTANCE Conductivity SM 4500 NH3: AMMONIA Nitrogen, Ammonia SM4500-H+B: PH Analyst: JDC mg/l 1 12/24/ :33:31 AM R15700 Analyst: SRM µmhos/cm 1 12/23/2013 4:22:16 PM R mg/l 1 Analyst: TMG 12/27/ :30:00 AM R15765 Analyst: SRM ph H ph units 1 12/23/2013 4:22:16 PM R15709 SM2320B: ALKALINITY Bicarbonate (As CaCO3) Carbonate (As CaCO3) Total Alkalinity (as CaCO3) SM2540C MOD: TOTAL DISSOLVED SOLIDS Total Dissolved Solids Analyst: SRM mg/l CaCO3 1 12/23/2013 4:22:16 PM R mg/l CaCO3 1 12/23/2013 4:22:16 PM R mg/l CaCO3 1 12/23/2013 4:22:16 PM R15709 Analyst: KS mg/l 1 12/27/ :29:00 AM Refer to the QC Summary report and sample login checklist for flagged QC data and preservation information. Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit Page 6 of 21 O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit S Spike Recovery outside accepted recovery limits

194 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1312A00 17-Jan-14 Client: Project: City of Las Cruces City Of Las Cruces Foothills Lanfdill Monitorin Sample ID MB Client ID: PBW Batch ID: R15768 RunNo: SampType: MBLK Analysis Date: 12/27/2013 TestCode: EPA Method 200.7: Metals SeqNo: Barium Beryllium Cadmium Chromium Cobalt Copper Manganese Nickel Silver Vanadium Zinc Sample ID LCS Client ID: LCSW Batch ID: R15768 RunNo: SampType: LCS Analysis Date: 12/27/2013 TestCode: EPA Method 200.7: Metals SeqNo: Barium Beryllium Cadmium Chromium Cobalt Copper Manganese Nickel Silver Vanadium Zinc Sample ID MB Client ID: PBW Batch ID: R15805 RunNo: SampType: MBLK Analysis Date: 12/30/2013 TestCode: EPA Method 200.7: Metals SeqNo: Calcium 1.0 Iron Magnesium 1.0 Potassium 1.0 Sodium 1.0 Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit S Spike Recovery outside accepted recovery limits Page 7 of 21

195 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1312A00 17-Jan-14 Client: Project: City of Las Cruces City Of Las Cruces Foothills Lanfdill Monitorin Sample ID LCS Client ID: LCSW Batch ID: R15805 RunNo: SampType: LCS Analysis Date: 12/30/2013 TestCode: EPA Method 200.7: Metals SeqNo: Calcium Iron Magnesium Potassium Sodium Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit S Spike Recovery outside accepted recovery limits Page 8 of 21

196 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1312A00 17-Jan-14 Client: Project: City of Las Cruces City Of Las Cruces Foothills Lanfdill Monitorin Sample ID LCS Client ID: LCSW Batch ID: R15909 RunNo: SampType: LCS Analysis Date: 1/6/2014 TestCode: EPA 200.8: Metals SeqNo: Antimony Arsenic Lead Thallium Sample ID LCS Client ID: LCSW Batch ID: R15909 RunNo: SampType: LCS Analysis Date: 1/6/2014 TestCode: EPA 200.8: Metals SeqNo: Arsenic Lead Sample ID MB Client ID: PBW Batch ID: R15909 RunNo: SampType: MBLK Analysis Date: 1/6/2014 TestCode: EPA 200.8: Metals SeqNo: Antimony Arsenic Lead Thallium Sample ID MB Client ID: PBW Batch ID: R15909 RunNo: SampType: MBLK Analysis Date: 1/6/2014 TestCode: EPA 200.8: Metals SeqNo: Arsenic Lead Sample ID LCS Client ID: LCSW Batch ID: R15963 RunNo: SampType: LCS Analysis Date: 1/8/2014 TestCode: EPA 200.8: Metals SeqNo: Selenium Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit S Spike Recovery outside accepted recovery limits Page 9 of 21

197 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1312A00 17-Jan-14 Client: Project: City of Las Cruces City Of Las Cruces Foothills Lanfdill Monitorin Sample ID MB Client ID: PBW Batch ID: R15963 RunNo: SampType: MBLK Analysis Date: 1/8/2014 TestCode: EPA 200.8: Metals SeqNo: Selenium Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit S Spike Recovery outside accepted recovery limits Page 10 of 21

198 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1312A00 17-Jan-14 Client: Project: City of Las Cruces City Of Las Cruces Foothills Lanfdill Monitorin Sample ID A5 Client ID: BatchQC Batch ID: R15728 RunNo: SampType: CCV_5 Analysis Date: 12/20/2013 TestCode: EPA Method 300.0: Anions SeqNo: Chloride Nitrogen, Nitrate (As N) Sulfate Sample ID MB Client ID: PBW Batch ID: R15728 RunNo: SampType: MBLK Analysis Date: 12/20/2013 TestCode: EPA Method 300.0: Anions SeqNo: Chloride 0.50 Nitrogen, Nitrate (As N) 0.10 Sulfate 0.50 Sample ID LCS Client ID: LCSW Batch ID: R15728 RunNo: SampType: LCS Analysis Date: 12/20/2013 TestCode: EPA Method 300.0: Anions SeqNo: Chloride Nitrogen, Nitrate (As N) Sulfate Sample ID A6 Client ID: BatchQC Batch ID: R15728 RunNo: SampType: CCV_6 Analysis Date: 12/20/2013 TestCode: EPA Method 300.0: Anions SeqNo: Chloride Nitrogen, Nitrate (As N) Sulfate Sample ID A4 Client ID: BatchQC Batch ID: R15728 RunNo: SampType: CCV_4 Analysis Date: 12/20/2013 TestCode: EPA Method 300.0: Anions SeqNo: Chloride Nitrogen, Nitrate (As N) Sulfate Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit S Spike Recovery outside accepted recovery limits Page 11 of 21

199 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1312A00 17-Jan-14 Client: Project: City of Las Cruces City Of Las Cruces Foothills Lanfdill Monitorin Sample ID A5 Client ID: BatchQC Batch ID: R15728 RunNo: SampType: CCV_5 Analysis Date: 12/20/2013 TestCode: EPA Method 300.0: Anions SeqNo: Chloride Nitrogen, Nitrate (As N) Sulfate Sample ID A6 Client ID: BatchQC Batch ID: R15728 RunNo: SampType: CCV_6 Analysis Date: 12/20/2013 TestCode: EPA Method 300.0: Anions SeqNo: Chloride Nitrogen, Nitrate (As N) S Sulfate Sample ID A4 Client ID: BatchQC Batch ID: R15728 RunNo: SampType: CCV_4 Analysis Date: 12/21/2013 TestCode: EPA Method 300.0: Anions SeqNo: Chloride Nitrogen, Nitrate (As N) Sulfate Sample ID A5 Client ID: BatchQC Batch ID: R15728 RunNo: SampType: CCV_5 Analysis Date: 12/21/2013 TestCode: EPA Method 300.0: Anions SeqNo: Chloride Nitrogen, Nitrate (As N) Sulfate Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit S Spike Recovery outside accepted recovery limits Page 12 of 21

200 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1312A00 17-Jan-14 Client: Project: City of Las Cruces City Of Las Cruces Foothills Lanfdill Monitorin Sample ID MB Client ID: PBW Batch ID: RunNo: /16/2014 SampType: MBLK Analysis Date: 1/16/2014 TestCode: EPA Method 504.1: EDB/DBCP SeqNo: Units: µg/l 1,2-Dibromo-3-chloropropane ,2-Dibromoethane Sample ID LCS Client ID: LCSW Batch ID: RunNo: /16/2014 SampType: LCS Analysis Date: 1/16/2014 TestCode: EPA Method 504.1: EDB/DBCP SeqNo: Units: µg/l 1,2-Dibromo-3-chloropropane ,2-Dibromoethane Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit S Spike Recovery outside accepted recovery limits Page 13 of 21

201 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1312A00 17-Jan-14 Client: Project: City of Las Cruces City Of Las Cruces Foothills Lanfdill Monitorin Sample ID 5ml rb Client ID: PBW Batch ID: R15681 RunNo: SampType: MBLK Analysis Date: 12/22/2013 TestCode: EPA Method 8260B: Volatiles, Table I SeqNo: Units: µg/l Benzene 1.0 Toluene 1.0 Ethylbenzene 1.0 Methyl tert-butyl ether (MTBE) 1.0 1,2-Dichloroethane (EDC) 1.0 1,2-Dibromoethane (EDB) 1.0 Acetone 10 Bromodichloromethane 1.0 Bromoform 1.0 Bromomethane Butanone 10 Carbon disulfide 10 Carbon Tetrachloride 1.0 Chlorobenzene 1.0 Chloroethane 2.0 Chloroform 1.0 Chloromethane 1.0 cis-1,2-dce 1.0 cis-1,3-dichloropropene 1.0 1,2-Dibromo-3-chloropropane 2.0 Dibromochloromethane 1.0 Dibromomethane 1.0 1,2-Dichlorobenzene 1.0 1,4-Dichlorobenzene 1.0 1,1-Dichloroethane 1.0 1,1-Dichloroethene 1.0 1,2-Dichloropropane Hexanone 10 4-Methyl-2-pentanone 10 Methylene Chloride 1.0 Styrene 1.0 1,1,1,2-Tetrachloroethane 1.0 1,1,2,2-Tetrachloroethane 1.0 Tetrachloroethene (PCE) 0.50 trans-1,2-dce 1.0 trans-1,3-dichloropropene 1.0 1,1,1-Trichloroethane 1.0 1,1,2-Trichloroethane 1.0 Trichloroethene (TCE) 1.0 Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit S Spike Recovery outside accepted recovery limits Page 14 of 21

202 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1312A00 17-Jan-14 Client: Project: City of Las Cruces City Of Las Cruces Foothills Lanfdill Monitorin Sample ID 5ml rb Client ID: PBW Batch ID: R15681 RunNo: SampType: MBLK Analysis Date: 12/22/2013 TestCode: EPA Method 8260B: Volatiles, Table I SeqNo: Units: µg/l Trichlorofluoromethane 1.0 1,2,3-Trichloropropane 1.0 Vinyl chloride 0.40 Xylenes, Total 2.0 Acrylonitrile 10 Bromochloromethane 2.0 Iodomethane 10 trans-1,4-dichloro-2-butene 10 Vinyl acetate 10 Surr: Dibromofluoromethane Surr: 1,2-Dichloroethane-d Surr: Toluene-d Surr: 4-Bromofluorobenzene Sample ID 100nglcs,200ngacac Client ID: LCSW Batch ID: R15681 RunNo: SampType: LCS Analysis Date: 12/22/2013 TestCode: EPA Method 8260B: Volatiles, Table I SeqNo: Units: µg/l Benzene Toluene Chlorobenzene ,1-Dichloroethene Trichloroethene (TCE) Surr: Dibromofluoromethane Surr: 1,2-Dichloroethane-d Surr: Toluene-d Surr: 4-Bromofluorobenzene Sample ID 5mL rb Client ID: PBW Batch ID: R15701 RunNo: SampType: MBLK Analysis Date: 12/23/2013 TestCode: EPA Method 8260B: Volatiles, Table I SeqNo: Units: %REC Surr: Dibromofluoromethane Surr: 1,2-Dichloroethane-d Surr: Toluene-d Surr: 4-Bromofluorobenzene Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit S Spike Recovery outside accepted recovery limits Page 15 of 21

203 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1312A00 17-Jan-14 Client: Project: City of Las Cruces City Of Las Cruces Foothills Lanfdill Monitorin Sample ID 100ng lcs Client ID: LCSW Batch ID: R15701 RunNo: SampType: LCS Analysis Date: 12/23/2013 TestCode: EPA Method 8260B: Volatiles, Table I SeqNo: Units: %REC Surr: Dibromofluoromethane Surr: 1,2-Dichloroethane-d Surr: Toluene-d Surr: 4-Bromofluorobenzene Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit S Spike Recovery outside accepted recovery limits Page 16 of 21

204 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1312A00 17-Jan-14 Client: Project: City of Las Cruces City Of Las Cruces Foothills Lanfdill Monitorin Sample ID 1312A00-001FMS Client ID: MW-1 Batch ID: R15700 RunNo: SampType: MS Analysis Date: 12/24/2013 TestCode: EPA Method 9060 TOC SeqNo: Total Organic Carbon Sample ID 1312A00-001FMSD Client ID: MW-1 Batch ID: R15700 RunNo: SampType: MSD Analysis Date: 12/24/2013 TestCode: EPA Method 9060 TOC SeqNo: Total Organic Carbon Sample ID MB Client ID: PBW Batch ID: R15700 RunNo: SampType: MBLK Analysis Date: 12/23/2013 TestCode: EPA Method 9060 TOC SeqNo: Total Organic Carbon 1.0 Sample ID LCS ST Client ID: LCSW Batch ID: R15700 RunNo: SampType: LCS Analysis Date: 12/23/2013 TestCode: EPA Method 9060 TOC SeqNo: Total Organic Carbon Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit S Spike Recovery outside accepted recovery limits Page 17 of 21

205 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1312A00 17-Jan-14 Client: Project: City of Las Cruces City Of Las Cruces Foothills Lanfdill Monitorin Sample ID MB Client ID: PBW Batch ID: RunNo: /23/2013 SampType: MBLK TestCode: Total Phenolics by SW Analysis Date: 12/23/2013 SeqNo: Units: µg/l Phenolics, Total Recoverable 2.5 Sample ID LCS Client ID: LCSW Batch ID: RunNo: /23/2013 SampType: LCS TestCode: Total Phenolics by SW Analysis Date: 12/23/2013 SeqNo: Units: µg/l Phenolics, Total Recoverable Sample ID 1312A00-002BMS Client ID: MW-2 Batch ID: RunNo: /23/2013 SampType: MS TestCode: Total Phenolics by SW Analysis Date: 12/23/2013 SeqNo: Units: µg/l Phenolics, Total Recoverable Sample ID 1312A00-002BMSD Client ID: MW-2 Batch ID: RunNo: /23/2013 SampType: MSD TestCode: Total Phenolics by SW Analysis Date: 12/23/2013 SeqNo: Units: µg/l Phenolics, Total Recoverable Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit S Spike Recovery outside accepted recovery limits Page 18 of 21

206 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1312A00 17-Jan-14 Client: Project: City of Las Cruces City Of Las Cruces Foothills Lanfdill Monitorin Sample ID MB Client ID: PBW Batch ID: R15765 RunNo: SampType: MBLK Analysis Date: 12/27/2013 TestCode: SM 4500 NH3: Ammonia SeqNo: Nitrogen, Ammonia 1.0 Sample ID LCS Client ID: LCSW Batch ID: R15765 RunNo: SampType: LCS Analysis Date: 12/27/2013 TestCode: SM 4500 NH3: Ammonia SeqNo: Nitrogen, Ammonia Sample ID 1312A00-001DMS Client ID: MW-1 Batch ID: R15765 RunNo: SampType: MS Analysis Date: 12/27/2013 TestCode: SM 4500 NH3: Ammonia SeqNo: Nitrogen, Ammonia Sample ID 1312A00-001DMSD Client ID: MW-1 Batch ID: R15765 RunNo: SampType: MSD Analysis Date: 12/27/2013 TestCode: SM 4500 NH3: Ammonia SeqNo: Nitrogen, Ammonia Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit S Spike Recovery outside accepted recovery limits Page 19 of 21

207 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1312A00 17-Jan-14 Client: Project: City of Las Cruces City Of Las Cruces Foothills Lanfdill Monitorin Sample ID mb-1 Client ID: PBW Batch ID: R15709 RunNo: SampType: MBLK Analysis Date: 12/23/2013 TestCode: SM2320B: Alkalinity SeqNo: CaCO3 Total Alkalinity (as CaCO3) 20 Sample ID lcs-1 Client ID: LCSW Batch ID: R15709 RunNo: SampType: LCS Analysis Date: 12/23/2013 TestCode: SM2320B: Alkalinity SeqNo: CaCO3 Total Alkalinity (as CaCO3) Sample ID mb-2 Client ID: PBW Batch ID: R15709 RunNo: SampType: MBLK Analysis Date: 12/23/2013 TestCode: SM2320B: Alkalinity SeqNo: CaCO3 Total Alkalinity (as CaCO3) 20 Sample ID lcs-2 Client ID: LCSW Batch ID: R15709 RunNo: SampType: LCS Analysis Date: 12/23/2013 TestCode: SM2320B: Alkalinity SeqNo: CaCO3 Total Alkalinity (as CaCO3) Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit S Spike Recovery outside accepted recovery limits Page 20 of 21

208 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1312A00 17-Jan-14 Client: Project: City of Las Cruces City Of Las Cruces Foothills Lanfdill Monitorin Sample ID MB Client ID: PBW Batch ID: RunNo: /25/2013 SampType: MBLK Analysis Date: 12/27/2013 TestCode: SM2540C MOD: Total Dissolved Solids SeqNo: Total Dissolved Solids 20.0 Sample ID LCS Client ID: LCSW Batch ID: RunNo: /25/2013 SampType: LCS Analysis Date: 12/27/2013 TestCode: SM2540C MOD: Total Dissolved Solids SeqNo: Total Dissolved Solids Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit S Spike Recovery outside accepted recovery limits Page 21 of 21

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211 JSAI Laboratory Results Sample Date (Lab Report Date , Report 2 of 2) JOHN SHOMAKER & ASSOCIATES, INC. WATER-RESOURCE A ENVIRONMENTAL CONSULTANTS

212 Hall Environmental Analysis Laboratory 4901 Hawkins NE Albuquerque, NM TEL: FAX: Website: January 17, 2014 Joshua Rosenblatt City of Las Cruces PO Box Las Cruces, NM TEL: (575) FAX (575) RE: City Of Las Cruces Foothills Lanfdill Monitoring Wells OrderNo.: 1312A22 Dear Joshua Rosenblatt: Hall Environmental Analysis Laboratory received 3 sample(s) on 12/20/2013 for the analyses presented in the following report. This report is a revised report and it replaces the original report issued January 13, These were analyzed according to EPA procedures or equivalent. To access our accredited tests please go to or the state specific web sites. See the sample checklist and/or the Chain of Custody for information regarding the sample receipt temperature and preservation. Data qualifiers or a narrative will be provided if the sample analysis or analytical quality control parameters require a flag. All samples are reported as received unless otherwise indicated. Please don't hesitate to contact HEAL for any additional information or clarifications. Sincerely, Andy Freeman Laboratory Manager 4901 Hawkins NE Albuquerque, NM 87109

213 Hall Environmental Analysis Laboratory, Inc. CLIENT: City of Las Cruces Project: City Of Las Cruces Foothills Lanfdill Mo Lab ID: 1312A Matrix: AQUEOUS Analytical Report Lab Order 1312A22 Date Reported: 1/17/2014 Client Sample ID: MW-3 Collection Date: 12/19/ :19:00 AM Received Date: 12/20/ :30:00 AM Analyses Result RL Qual Units DF Date Analyzed Batch EPA METHOD 504.1: EDB/DBCP Analyst: LRW 1,2-Dibromo-3-chloropropane 0.10 H µg/l 1 1/16/ :34:00 AM ,2-Dibromoethane H µg/l 1 1/16/ :34:00 AM EPA METHOD 300.0: ANIONS Chloride Sulfate Nitrate+Nitrite as N EPA METHOD 200.7: METALS Barium Beryllium Cadmium Calcium Chromium Cobalt Copper Iron Magnesium Manganese Nickel Potassium Silver Sodium Vanadium Zinc EPA 200.8: METALS Antimony Arsenic Lead Selenium Thallium EPA METHOD 8260B: VOLATILES, TABLE I Benzene Toluene Ethylbenzene Methyl tert-butyl ether (MTBE) 1,2-Dichloroethane (EDC) 1,2-Dibromoethane (EDB) Acetone Analyst: JRR mg/l 1 12/20/2013 8:50:44 PM R mg/l 1 12/20/2013 8:50:44 PM R mg/l 5 12/28/2013 1:09:58 AM R15794 Analyst: ELS mg/l 1 12/27/2013 1:31:29 PM R mg/l mg/l 1 12/27/2013 1:31:29 PM 12/27/2013 1:31:29 PM R15768 R mg/l 1 12/30/2013 1:56:55 PM R mg/l mg/l 1 12/27/2013 1:31:29 PM 12/27/2013 1:31:29 PM R15768 R mg/l 1 12/27/2013 1:31:29 PM R mg/l 1 12/30/2013 1:56:55 PM R mg/l 1 12/30/2013 1:56:55 PM R mg/l mg/l 1 12/27/2013 1:31:29 PM 12/27/2013 1:31:29 PM R15768 R mg/l 1 12/30/2013 1:56:55 PM R mg/l 1 12/27/2013 1:31:29 PM R mg/l 1 12/30/2013 1:56:55 PM R mg/l 1 12/27/2013 1:31:29 PM R mg/l 1 12/27/2013 1:31:29 PM R mg/l 1 1/6/2014 4:36:40 PM Analyst: DBD R mg/l 1 1/6/2014 4:36:40 PM R mg/l 1 1/6/2014 4:36:40 PM R mg/l mg/l µg/l µg/l µg/l µg/l µg/l µg/l 1 10 µg/l 1 1/8/2014 3:11:11 PM 1/6/2014 4:36:40 PM R15963 R15909 Analyst: DJF 12/22/2013 9:11:04 PM 12/22/2013 9:11:04 PM 12/22/2013 9:11:04 PM 12/22/2013 9:11:04 PM 12/22/2013 9:11:04 PM 12/22/2013 9:11:04 PM 12/22/2013 9:11:04 PM Refer to the QC Summary report and sample login checklist for flagged QC data and preservation information. R15681 R15681 R15681 R15681 R15681 R15681 R15681 Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit Page 1 of 28 O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit S Spike Recovery outside accepted recovery limits

214 Hall Environmental Analysis Laboratory, Inc. CLIENT: City of Las Cruces Project: City Of Las Cruces Foothills Lanfdill Mo Lab ID: 1312A Matrix: AQUEOUS Analytical Report Lab Order 1312A22 Date Reported: 1/17/2014 Client Sample ID: MW-3 Collection Date: 12/19/ :19:00 AM Received Date: 12/20/ :30:00 AM Analyses Result RL Qual Units DF Date Analyzed Batch EPA METHOD 8260B: VOLATILES, TABLE I Analyst: DJF Bromodichloromethane Bromoform Bromomethane 2-Butanone Carbon disulfide Carbon Tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-dce cis-1,3-dichloropropene 1,2-Dibromo-3-chloropropane Dibromochloromethane Dibromomethane 1,2-Dichlorobenzene 1,4-Dichlorobenzene Dichlorodifluoromethane 1,1-Dichloroethane 1,1-Dichloroethene 1,2-Dichloropropane 2-Hexanone 4-Methyl-2-pentanone Methylene Chloride Styrene 1,1,1,2-Tetrachloroethane 1,1,2,2-Tetrachloroethane Tetrachloroethene (PCE) trans-1,2-dce trans-1,3-dichloropropene 1,1,1-Trichloroethane 1,1,2-Trichloroethane Trichloroethene (TCE) Trichlorofluoromethane 1,2,3-Trichloropropane Vinyl chloride Xylenes, Total Acrylonitrile Bromochloromethane 1.0 µg/l µg/l µg/l 1 10 µg/l 1 10 µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l 1 10 µg/l 1 10 µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l 1 10 µg/l µg/l 1 12/22/2013 9:11:04 PM 12/22/2013 9:11:04 PM 12/22/2013 9:11:04 PM 12/22/2013 9:11:04 PM 12/22/2013 9:11:04 PM 12/22/2013 9:11:04 PM 12/22/2013 9:11:04 PM 12/22/2013 9:11:04 PM 12/22/2013 9:11:04 PM 12/22/2013 9:11:04 PM 12/22/2013 9:11:04 PM 12/22/2013 9:11:04 PM 12/22/2013 9:11:04 PM 12/22/2013 9:11:04 PM 12/22/2013 9:11:04 PM 12/22/2013 9:11:04 PM 12/22/2013 9:11:04 PM 12/22/2013 9:11:04 PM 12/22/2013 9:11:04 PM 12/22/2013 9:11:04 PM 12/22/2013 9:11:04 PM 12/22/2013 9:11:04 PM 12/22/2013 9:11:04 PM 12/22/2013 9:11:04 PM 12/22/2013 9:11:04 PM 12/22/2013 9:11:04 PM 12/22/2013 9:11:04 PM 12/22/2013 9:11:04 PM 12/22/2013 9:11:04 PM 12/22/2013 9:11:04 PM 12/22/2013 9:11:04 PM 12/22/2013 9:11:04 PM 12/22/2013 9:11:04 PM 12/22/2013 9:11:04 PM 12/22/2013 9:11:04 PM 12/22/2013 9:11:04 PM 12/22/2013 9:11:04 PM 12/22/2013 9:11:04 PM 12/22/2013 9:11:04 PM R15681 R15681 R15681 R15681 R15681 R15681 R15681 R15681 R15681 R15681 R15681 R15681 R15681 R15681 R15681 R15681 R15681 R15681 R15681 R15681 R15681 R15681 R15681 R15681 R15681 R15681 R15681 R15681 R15681 R15681 R15681 R15681 R15681 R15681 R15681 R15681 R15681 R15681 R15681 Refer to the QC Summary report and sample login checklist for flagged QC data and preservation information. Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit Page 2 of 28 O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit S Spike Recovery outside accepted recovery limits

215 Hall Environmental Analysis Laboratory, Inc. CLIENT: City of Las Cruces Project: City Of Las Cruces Foothills Lanfdill Mo Lab ID: 1312A Matrix: AQUEOUS Analytical Report Lab Order 1312A22 Date Reported: 1/17/2014 Client Sample ID: MW-3 Collection Date: 12/19/ :19:00 AM Received Date: 12/20/ :30:00 AM Analyses Result RL Qual Units DF Date Analyzed Batch EPA METHOD 8260B: VOLATILES, TABLE I Iodomethane trans-1,4-dichloro-2-butene Vinyl acetate Surr: Dibromofluoromethane Surr: 1,2-Dichloroethane-d4 Surr: Toluene-d8 Surr: 4-Bromofluorobenzene TOTAL PHENOLICS BY SW µg/l 1 10 µg/l 1 10 µg/l 1 Analyst: DJF 12/22/2013 9:11:04 PM 12/22/2013 9:11:04 PM 12/22/2013 9:11:04 PM R15681 R15681 R %REC 1 12/22/2013 9:11:04 PM R %REC 1 12/22/2013 9:11:04 PM R %REC 1 12/22/2013 9:11:04 PM R %REC 1 12/22/2013 9:11:04 PM R15681 Analyst: SCC Phenolics, Total Recoverable 2.5 µg/l 1 12/23/ EPA METHOD 9060 TOC Total Organic Carbon SM2510B: SPECIFIC COUCTANCE Conductivity SM 4500 NH3: AMMONIA Nitrogen, Ammonia SM4500-H+B: PH 1.0 mg/l 1 Analyst: JDC 12/24/2013 1:38:03 AM R15700 Analyst: SRM µmhos/cm 1 12/23/2013 4:31:58 PM R mg/l 1 Analyst: TMG 12/30/2013 8:45:00 AM R15792 Analyst: SRM ph H ph units 1 12/23/2013 4:31:58 PM R15709 SM2320B: ALKALINITY Bicarbonate (As CaCO3) Carbonate (As CaCO3) Total Alkalinity (as CaCO3) SM2540C MOD: TOTAL DISSOLVED SOLIDS Total Dissolved Solids Analyst: SRM mg/l CaCO3 1 12/23/2013 4:31:58 PM R mg/l CaCO3 1 12/23/2013 4:31:58 PM R mg/l CaCO3 1 12/23/2013 4:31:58 PM R15709 Analyst: KS mg/l 1 12/27/ :29:00 AM Refer to the QC Summary report and sample login checklist for flagged QC data and preservation information. Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit Page 3 of 28 O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit S Spike Recovery outside accepted recovery limits

216 Hall Environmental Analysis Laboratory, Inc. CLIENT: City of Las Cruces Project: City Of Las Cruces Foothills Lanfdill Mo Lab ID: 1312A Matrix: AQUEOUS Analytical Report Lab Order 1312A22 Date Reported: 1/17/2014 Client Sample ID: MW-4 Collection Date: 12/19/ :05:00 PM Received Date: 12/20/ :30:00 AM Analyses Result RL Qual Units DF Date Analyzed Batch EPA METHOD 504.1: EDB/DBCP Analyst: LRW 1,2-Dibromo-3-chloropropane 0.10 H µg/l 1 1/16/ :15:45 PM ,2-Dibromoethane H µg/l 1 1/16/ :15:45 PM EPA METHOD 300.0: ANIONS Chloride Sulfate Nitrate+Nitrite as N EPA METHOD 200.7: METALS Barium Beryllium Cadmium Calcium Chromium Cobalt Copper Iron Magnesium Manganese Nickel Potassium Silver Sodium Vanadium Zinc EPA 200.8: METALS Antimony Arsenic Lead Selenium Thallium EPA METHOD 8260B: VOLATILES, TABLE I Benzene Toluene Ethylbenzene Methyl tert-butyl ether (MTBE) 1,2-Dichloroethane (EDC) 1,2-Dibromoethane (EDB) Acetone Analyst: JRR mg/l 1 12/20/2013 9:15:32 PM R mg/l 1 12/20/2013 9:15:32 PM R mg/l 5 12/28/2013 1:22:22 AM R15794 Analyst: ELS mg/l 1 12/27/2013 1:34:57 PM R mg/l mg/l 1 12/27/2013 1:34:57 PM 12/27/2013 1:34:57 PM R15768 R mg/l 5 12/30/2013 2:00:32 PM R mg/l mg/l 1 12/27/2013 1:34:57 PM 12/27/2013 1:34:57 PM R15768 R mg/l 1 12/27/2013 1:34:57 PM R mg/l 1 12/30/2013 1:58:43 PM R mg/l 1 12/30/2013 1:58:43 PM R mg/l 1 12/27/2013 1:34:57 PM R mg/l 1 12/27/2013 1:34:57 PM R mg/l 1 12/30/2013 1:58:43 PM R mg/l 1 12/27/2013 1:34:57 PM R mg/l 1 12/30/2013 1:58:43 PM R mg/l 1 12/27/2013 1:34:57 PM R mg/l 1 12/27/2013 1:34:57 PM R mg/l mg/l 1 1/6/2014 4:41:11 PM 1/6/2014 4:41:11 PM Analyst: DBD R15909 R mg/l 1 1/6/2014 4:41:11 PM R mg/l mg/l µg/l µg/l µg/l µg/l µg/l µg/l 1 10 µg/l 1 1/8/2014 3:13:51 PM 1/6/2014 4:41:11 PM R15963 R15909 Analyst: DJF 12/22/2013 9:42:45 PM 12/22/2013 9:42:45 PM 12/22/2013 9:42:45 PM 12/22/2013 9:42:45 PM 12/22/2013 9:42:45 PM 12/22/2013 9:42:45 PM 12/22/2013 9:42:45 PM Refer to the QC Summary report and sample login checklist for flagged QC data and preservation information. R15681 R15681 R15681 R15681 R15681 R15681 R15681 Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit Page 4 of 28 O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit S Spike Recovery outside accepted recovery limits

217 Hall Environmental Analysis Laboratory, Inc. CLIENT: City of Las Cruces Project: City Of Las Cruces Foothills Lanfdill Mo Lab ID: 1312A Matrix: AQUEOUS Analytical Report Lab Order 1312A22 Date Reported: 1/17/2014 Client Sample ID: MW-4 Collection Date: 12/19/ :05:00 PM Received Date: 12/20/ :30:00 AM Analyses Result RL Qual Units DF Date Analyzed Batch EPA METHOD 8260B: VOLATILES, TABLE I Bromodichloromethane Bromoform Bromomethane 2-Butanone Carbon disulfide Carbon Tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-dce cis-1,3-dichloropropene 1,2-Dibromo-3-chloropropane Dibromochloromethane Dibromomethane 1,2-Dichlorobenzene 1,4-Dichlorobenzene Dichlorodifluoromethane 1,1-Dichloroethane 1,1-Dichloroethene 1,2-Dichloropropane 2-Hexanone 4-Methyl-2-pentanone Methylene Chloride Styrene 1,1,1,2-Tetrachloroethane 1,1,2,2-Tetrachloroethane Tetrachloroethene (PCE) trans-1,2-dce trans-1,3-dichloropropene 1,1,1-Trichloroethane 1,1,2-Trichloroethane Trichloroethene (TCE) Trichlorofluoromethane 1,2,3-Trichloropropane Vinyl chloride Xylenes, Total Acrylonitrile Bromochloromethane Analyst: DJF 1.0 µg/l 1 12/22/2013 9:42:45 PM R µg/l 1 12/22/2013 9:42:45 PM R µg/l 1 12/22/2013 9:42:45 PM R µg/l 1 12/22/2013 9:42:45 PM R µg/l 1 12/22/2013 9:42:45 PM R µg/l 1 12/22/2013 9:42:45 PM R µg/l 1 12/22/2013 9:42:45 PM R µg/l 1 12/22/2013 9:42:45 PM R µg/l 1 12/22/2013 9:42:45 PM R µg/l 1 12/22/2013 9:42:45 PM R µg/l 1 12/22/2013 9:42:45 PM R µg/l 1 12/22/2013 9:42:45 PM R µg/l 1 12/22/2013 9:42:45 PM R µg/l 1 12/22/2013 9:42:45 PM R µg/l 1 12/22/2013 9:42:45 PM R µg/l 1 12/22/2013 9:42:45 PM R µg/l 1 12/22/2013 9:42:45 PM R µg/l 1 12/23/ :14:35 PM R µg/l 1 12/22/2013 9:42:45 PM R µg/l 1 12/22/2013 9:42:45 PM R µg/l 1 12/22/2013 9:42:45 PM R µg/l 1 12/22/2013 9:42:45 PM R µg/l 1 12/22/2013 9:42:45 PM R µg/l 1 12/22/2013 9:42:45 PM R µg/l 1 12/22/2013 9:42:45 PM R µg/l 1 12/22/2013 9:42:45 PM R µg/l 1 12/22/2013 9:42:45 PM R µg/l 1 12/22/2013 9:42:45 PM R µg/l 1 12/22/2013 9:42:45 PM R µg/l 1 12/22/2013 9:42:45 PM R µg/l 1 12/22/2013 9:42:45 PM R µg/l 1 12/22/2013 9:42:45 PM R µg/l 1 12/22/2013 9:42:45 PM R µg/l 1 12/22/2013 9:42:45 PM R µg/l 1 12/22/2013 9:42:45 PM R µg/l 1 12/22/2013 9:42:45 PM R µg/l 1 12/22/2013 9:42:45 PM R µg/l 1 12/22/2013 9:42:45 PM R µg/l 1 12/22/2013 9:42:45 PM R15681 Refer to the QC Summary report and sample login checklist for flagged QC data and preservation information. Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit Page 5 of 28 O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit S Spike Recovery outside accepted recovery limits

218 Hall Environmental Analysis Laboratory, Inc. CLIENT: City of Las Cruces Project: City Of Las Cruces Foothills Lanfdill Mo Lab ID: 1312A Matrix: AQUEOUS Analytical Report Lab Order 1312A22 Date Reported: 1/17/2014 Client Sample ID: MW-4 Collection Date: 12/19/ :05:00 PM Received Date: 12/20/ :30:00 AM Analyses Result RL Qual Units DF Date Analyzed Batch EPA METHOD 8260B: VOLATILES, TABLE I Iodomethane trans-1,4-dichloro-2-butene Vinyl acetate Surr: Dibromofluoromethane Surr: 1,2-Dichloroethane-d4 Surr: Toluene-d8 Surr: 4-Bromofluorobenzene TOTAL PHENOLICS BY SW µg/l 1 10 µg/l 1 10 µg/l 1 Analyst: DJF 12/22/2013 9:42:45 PM 12/22/2013 9:42:45 PM 12/22/2013 9:42:45 PM R15681 R15681 R %REC 1 12/22/2013 9:42:45 PM R %REC 1 12/22/2013 9:42:45 PM R %REC 1 12/22/2013 9:42:45 PM R %REC 1 12/22/2013 9:42:45 PM R15681 Analyst: SCC Phenolics, Total Recoverable 2.5 µg/l 1 12/23/ EPA METHOD 9060 TOC Total Organic Carbon SM2510B: SPECIFIC COUCTANCE Conductivity SM 4500 NH3: AMMONIA Nitrogen, Ammonia SM4500-H+B: PH 1.0 mg/l 1 Analyst: JDC 12/24/2013 1:54:20 AM R15700 Analyst: SRM µmhos/cm 1 12/23/2013 5:00:20 PM R mg/l 1 Analyst: TMG 12/30/2013 8:45:00 AM R15792 Analyst: SRM ph H ph units 1 12/23/2013 5:00:20 PM R15709 SM2320B: ALKALINITY Bicarbonate (As CaCO3) Carbonate (As CaCO3) Total Alkalinity (as CaCO3) SM2540C MOD: TOTAL DISSOLVED SOLIDS Total Dissolved Solids Analyst: SRM mg/l CaCO3 1 12/23/2013 5:00:20 PM R mg/l CaCO3 1 12/23/2013 5:00:20 PM R mg/l CaCO3 1 12/23/2013 5:00:20 PM R15709 Analyst: KS mg/l 1 12/27/ :29:00 AM Refer to the QC Summary report and sample login checklist for flagged QC data and preservation information. Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit Page 6 of 28 O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit S Spike Recovery outside accepted recovery limits

219 Hall Environmental Analysis Laboratory, Inc. CLIENT: City of Las Cruces Project: City Of Las Cruces Foothills Lanfdill Mo Lab ID: 1312A Matrix: AQUEOUS Analytical Report Lab Order 1312A22 Date Reported: 1/17/2014 Client Sample ID: MW-7 Collection Date: 12/19/2013 1:24:00 PM Received Date: 12/20/ :30:00 AM Analyses Result RL Qual Units DF Date Analyzed Batch EPA METHOD 504.1: EDB/DBCP Analyst: LRW 1,2-Dibromo-3-chloropropane 0.10 H µg/l 1 1/16/ :29:40 PM ,2-Dibromoethane H µg/l 1 1/16/ :29:40 PM EPA METHOD 300.0: ANIONS Chloride Sulfate Nitrate+Nitrite as N EPA METHOD 200.7: METALS Barium Beryllium Cadmium Calcium Chromium Cobalt Copper Iron Magnesium Manganese Nickel Potassium Silver Sodium Vanadium Zinc EPA 200.8: METALS Antimony Arsenic Lead Selenium Thallium EPA METHOD 8260B: VOLATILES, TABLE I Benzene Toluene Ethylbenzene Methyl tert-butyl ether (MTBE) 1,2-Dichloroethane (EDC) 1,2-Dibromoethane (EDB) Acetone Analyst: JRR mg/l 20 12/20/2013 9:52:46 PM R mg/l 20 12/20/2013 9:52:46 PM R mg/l 5 12/28/2013 1:34:46 AM R15794 Analyst: ELS mg/l 1 12/27/2013 1:45:11 PM R mg/l mg/l 1 12/27/2013 1:45:11 PM 12/27/2013 1:45:11 PM R15768 R mg/l 1 12/30/2013 2:02:19 PM R mg/l mg/l mg/l mg/l 1 12/27/2013 1:45:11 PM 12/27/2013 1:45:11 PM 12/27/2013 1:45:11 PM 12/30/2013 2:02:19 PM R15768 R15768 R15768 R mg/l 1 12/30/2013 2:02:19 PM R mg/l 1 12/27/2013 1:45:11 PM R mg/l 1 12/27/2013 1:45:11 PM R mg/l 1 12/30/2013 2:02:19 PM R mg/l 1 12/27/2013 1:45:11 PM R mg/l 1 12/30/2013 2:02:19 PM R mg/l mg/l mg/l mg/l mg/l 1 12/27/2013 1:45:11 PM 12/27/2013 1:45:11 PM 1/6/2014 4:45:41 PM 1/6/2014 4:45:41 PM 1/6/2014 4:45:41 PM R15768 R15768 Analyst: DBD R15909 R15909 R mg/l 1 1/8/2014 3:16:30 PM R mg/l µg/l µg/l µg/l µg/l µg/l µg/l 1 10 µg/l 1 1/6/2014 4:45:41 PM R15909 Analyst: DJF 12/22/ :14:23 PM R /22/ :14:23 PM R /22/ :14:23 PM R /22/ :14:23 PM R /22/ :14:23 PM R /22/ :14:23 PM R /22/ :14:23 PM R15681 Refer to the QC Summary report and sample login checklist for flagged QC data and preservation information. Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit Page 7 of 28 O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit S Spike Recovery outside accepted recovery limits

220 Hall Environmental Analysis Laboratory, Inc. CLIENT: City of Las Cruces Project: City Of Las Cruces Foothills Lanfdill Mo Lab ID: 1312A Matrix: AQUEOUS Analytical Report Lab Order 1312A22 Date Reported: 1/17/2014 Client Sample ID: MW-7 Collection Date: 12/19/2013 1:24:00 PM Received Date: 12/20/ :30:00 AM Analyses Result RL Qual Units DF Date Analyzed Batch EPA METHOD 8260B: VOLATILES, TABLE I Bromodichloromethane Bromoform Bromomethane 2-Butanone Carbon disulfide Carbon Tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-dce cis-1,3-dichloropropene 1,2-Dibromo-3-chloropropane Dibromochloromethane Dibromomethane 1,2-Dichlorobenzene 1,4-Dichlorobenzene Dichlorodifluoromethane 1,1-Dichloroethane 1,1-Dichloroethene 1,2-Dichloropropane 2-Hexanone 4-Methyl-2-pentanone Methylene Chloride Styrene 1,1,1,2-Tetrachloroethane 1,1,2,2-Tetrachloroethane Tetrachloroethene (PCE) trans-1,2-dce trans-1,3-dichloropropene 1,1,1-Trichloroethane 1,1,2-Trichloroethane Trichloroethene (TCE) Trichlorofluoromethane 1,2,3-Trichloropropane Vinyl chloride Xylenes, Total Acrylonitrile Bromochloromethane Analyst: DJF 1.0 µg/l 1 12/22/ :14:23 PM R µg/l 1 12/22/ :14:23 PM R µg/l 1 12/22/ :14:23 PM R µg/l 1 12/22/ :14:23 PM R µg/l 1 12/22/ :14:23 PM R µg/l 1 12/22/ :14:23 PM R µg/l 1 12/22/ :14:23 PM R µg/l 1 12/22/ :14:23 PM R µg/l 1 12/22/ :14:23 PM R µg/l 1 12/22/ :14:23 PM R µg/l 1 12/22/ :14:23 PM R µg/l 1 12/22/ :14:23 PM R µg/l 1 12/22/ :14:23 PM R µg/l 1 12/22/ :14:23 PM R µg/l 1 12/22/ :14:23 PM R µg/l 1 12/22/ :14:23 PM R µg/l 1 12/22/ :14:23 PM R µg/l 1 12/23/ :43:19 PM R µg/l 1 12/22/ :14:23 PM R µg/l 1 12/22/ :14:23 PM R µg/l 1 12/22/ :14:23 PM R µg/l 1 12/22/ :14:23 PM R µg/l 1 12/22/ :14:23 PM R µg/l 1 12/22/ :14:23 PM R µg/l 1 12/22/ :14:23 PM R µg/l 1 12/22/ :14:23 PM R µg/l 1 12/22/ :14:23 PM R µg/l 1 12/22/ :14:23 PM R µg/l 1 12/22/ :14:23 PM R µg/l 1 12/22/ :14:23 PM R µg/l 1 12/22/ :14:23 PM R µg/l 1 12/22/ :14:23 PM R µg/l 1 12/22/ :14:23 PM R µg/l 1 12/22/ :14:23 PM R µg/l 1 12/22/ :14:23 PM R µg/l 1 12/22/ :14:23 PM R µg/l 1 12/22/ :14:23 PM R µg/l 1 12/22/ :14:23 PM R µg/l 1 12/22/ :14:23 PM R15681 Refer to the QC Summary report and sample login checklist for flagged QC data and preservation information. Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit Page 8 of 28 O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit S Spike Recovery outside accepted recovery limits

221 Hall Environmental Analysis Laboratory, Inc. CLIENT: City of Las Cruces Project: City Of Las Cruces Foothills Lanfdill Mo Lab ID: 1312A Matrix: AQUEOUS Analytical Report Lab Order 1312A22 Date Reported: 1/17/2014 Client Sample ID: MW-7 Collection Date: 12/19/2013 1:24:00 PM Received Date: 12/20/ :30:00 AM Analyses Result RL Qual Units DF Date Analyzed Batch EPA METHOD 8260B: VOLATILES, TABLE I Iodomethane trans-1,4-dichloro-2-butene Vinyl acetate Surr: Dibromofluoromethane Surr: 1,2-Dichloroethane-d4 Surr: Toluene-d8 Surr: 4-Bromofluorobenzene TOTAL PHENOLICS BY SW µg/l 1 10 µg/l 1 10 µg/l 1 Analyst: DJF 12/22/ :14:23 PM R /22/ :14:23 PM R /22/ :14:23 PM R %REC 1 12/22/ :14:23 PM R %REC 1 12/22/ :14:23 PM R %REC 1 12/22/ :14:23 PM R %REC 1 12/22/ :14:23 PM R15681 Analyst: SCC Phenolics, Total Recoverable 2.5 µg/l 1 12/23/ EPA METHOD 9060 TOC Total Organic Carbon SM2510B: SPECIFIC COUCTANCE Conductivity SM 4500 NH3: AMMONIA Nitrogen, Ammonia SM4500-H+B: PH 1.0 mg/l 1 Analyst: JDC 12/24/2013 2:10:37 AM R15700 Analyst: SRM µmhos/cm 1 12/23/2013 5:17:28 PM R mg/l 1 Analyst: TMG 12/30/2013 8:45:00 AM R15792 Analyst: SRM ph H ph units 1 12/23/2013 5:17:28 PM R15709 SM2320B: ALKALINITY Bicarbonate (As CaCO3) Carbonate (As CaCO3) Total Alkalinity (as CaCO3) SM2540C MOD: TOTAL DISSOLVED SOLIDS Total Dissolved Solids Analyst: SRM mg/l CaCO3 1 12/23/2013 5:17:28 PM R mg/l CaCO3 1 12/23/2013 5:17:28 PM R mg/l CaCO3 1 12/23/2013 5:17:28 PM R15709 Analyst: KS mg/l 1 12/27/ :29:00 AM Refer to the QC Summary report and sample login checklist for flagged QC data and preservation information. Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit Page 9 of 28 O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit S Spike Recovery outside accepted recovery limits

222 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1312A22 17-Jan-14 Client: Project: City of Las Cruces City Of Las Cruces Foothills Lanfdill Monitorin Sample ID MB Client ID: PBW Batch ID: R15768 RunNo: SampType: MBLK Analysis Date: 12/27/2013 TestCode: EPA Method 200.7: Metals SeqNo: Barium Beryllium Cadmium Chromium Cobalt Copper Manganese Nickel Silver Vanadium Zinc Sample ID LCS Client ID: LCSW Batch ID: R15768 RunNo: SampType: LCS Analysis Date: 12/27/2013 TestCode: EPA Method 200.7: Metals SeqNo: Barium Beryllium Cadmium Chromium Cobalt Copper Manganese Nickel Silver Vanadium Zinc Sample ID MB Client ID: PBW Batch ID: R15805 RunNo: SampType: MBLK Analysis Date: 12/30/2013 TestCode: EPA Method 200.7: Metals SeqNo: Calcium 1.0 Iron Magnesium 1.0 Potassium 1.0 Sodium 1.0 Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit S Spike Recovery outside accepted recovery limits Page 10 of 28

223 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1312A22 17-Jan-14 Client: Project: City of Las Cruces City Of Las Cruces Foothills Lanfdill Monitorin Sample ID LCS Client ID: LCSW Batch ID: R15805 RunNo: SampType: LCS Analysis Date: 12/30/2013 TestCode: EPA Method 200.7: Metals SeqNo: Calcium Iron Magnesium Potassium Sodium Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit S Spike Recovery outside accepted recovery limits Page 11 of 28

224 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1312A22 17-Jan-14 Client: Project: City of Las Cruces City Of Las Cruces Foothills Lanfdill Monitorin Sample ID LCS Client ID: LCSW Batch ID: R15909 RunNo: SampType: LCS Analysis Date: 1/6/2014 TestCode: EPA 200.8: Metals SeqNo: Antimony Arsenic Lead Thallium Sample ID LCS Client ID: LCSW Batch ID: R15909 RunNo: SampType: LCS Analysis Date: 1/6/2014 TestCode: EPA 200.8: Metals SeqNo: Arsenic Lead Sample ID MB Client ID: PBW Batch ID: R15909 RunNo: SampType: MBLK Analysis Date: 1/6/2014 TestCode: EPA 200.8: Metals SeqNo: Antimony Arsenic Lead Thallium Sample ID MB Client ID: PBW Batch ID: R15909 RunNo: SampType: MBLK Analysis Date: 1/6/2014 TestCode: EPA 200.8: Metals SeqNo: Arsenic Lead Sample ID LCS Client ID: LCSW Batch ID: R15963 RunNo: SampType: LCS Analysis Date: 1/8/2014 TestCode: EPA 200.8: Metals SeqNo: Selenium Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit S Spike Recovery outside accepted recovery limits Page 12 of 28

225 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1312A22 17-Jan-14 Client: Project: City of Las Cruces City Of Las Cruces Foothills Lanfdill Monitorin Sample ID MB Client ID: PBW Batch ID: R15963 RunNo: SampType: MBLK Analysis Date: 1/8/2014 TestCode: EPA 200.8: Metals SeqNo: Selenium Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit S Spike Recovery outside accepted recovery limits Page 13 of 28

226 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1312A22 17-Jan-14 Client: Project: City of Las Cruces City Of Las Cruces Foothills Lanfdill Monitorin Sample ID A5 Client ID: BatchQC Batch ID: R15728 RunNo: SampType: CCV_5 Analysis Date: 12/20/2013 TestCode: EPA Method 300.0: Anions SeqNo: Chloride Sulfate Sample ID MB Client ID: PBW Batch ID: R15728 RunNo: SampType: MBLK Analysis Date: 12/20/2013 TestCode: EPA Method 300.0: Anions SeqNo: Chloride 0.50 Sulfate 0.50 Sample ID LCS Client ID: LCSW Batch ID: R15728 RunNo: SampType: LCS Analysis Date: 12/20/2013 TestCode: EPA Method 300.0: Anions SeqNo: Chloride Sulfate Sample ID A6 Client ID: BatchQC Batch ID: R15728 RunNo: SampType: CCV_6 Analysis Date: 12/20/2013 TestCode: EPA Method 300.0: Anions SeqNo: Chloride Sulfate Sample ID A4 Client ID: BatchQC Batch ID: R15728 RunNo: SampType: CCV_4 Analysis Date: 12/20/2013 TestCode: EPA Method 300.0: Anions SeqNo: Chloride Sulfate Sample ID A5 Client ID: BatchQC Batch ID: R15728 RunNo: SampType: CCV_5 Analysis Date: 12/20/2013 TestCode: EPA Method 300.0: Anions SeqNo: Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit S Spike Recovery outside accepted recovery limits Page 14 of 28

227 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1312A22 17-Jan-14 Client: Project: City of Las Cruces City Of Las Cruces Foothills Lanfdill Monitorin Sample ID A5 Client ID: BatchQC Batch ID: R15728 RunNo: SampType: CCV_5 Analysis Date: 12/20/2013 TestCode: EPA Method 300.0: Anions SeqNo: Chloride Sulfate Sample ID A6 Client ID: BatchQC Batch ID: R15728 RunNo: SampType: CCV_6 Analysis Date: 12/20/2013 TestCode: EPA Method 300.0: Anions SeqNo: Chloride Sulfate Sample ID A4 Client ID: BatchQC Batch ID: R15728 RunNo: SampType: CCV_4 Analysis Date: 12/21/2013 TestCode: EPA Method 300.0: Anions SeqNo: Chloride Sulfate Sample ID A5 Client ID: BatchQC Batch ID: R15728 RunNo: SampType: CCV_5 Analysis Date: 12/21/2013 TestCode: EPA Method 300.0: Anions SeqNo: Chloride Sulfate Sample ID A6 Client ID: BatchQC Batch ID: R15794 RunNo: SampType: CCV_6 Analysis Date: 12/27/2013 TestCode: EPA Method 300.0: Anions SeqNo: Nitrate+Nitrite as N Sample ID MB Client ID: PBW Batch ID: R15794 RunNo: SampType: MBLK Analysis Date: 12/27/2013 TestCode: EPA Method 300.0: Anions SeqNo: Nitrate+Nitrite as N 0.20 Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit S Spike Recovery outside accepted recovery limits Page 15 of 28

228 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1312A22 17-Jan-14 Client: Project: City of Las Cruces City Of Las Cruces Foothills Lanfdill Monitorin Sample ID LCS Client ID: LCSW Batch ID: R15794 RunNo: SampType: LCS Analysis Date: 12/27/2013 TestCode: EPA Method 300.0: Anions SeqNo: Nitrate+Nitrite as N Sample ID A4 Client ID: BatchQC Batch ID: R15794 RunNo: SampType: CCV_4 Analysis Date: 12/27/2013 TestCode: EPA Method 300.0: Anions SeqNo: Nitrate+Nitrite as N Sample ID A5 Client ID: BatchQC Batch ID: R15794 RunNo: SampType: CCV_5 Analysis Date: 12/27/2013 TestCode: EPA Method 300.0: Anions SeqNo: Nitrate+Nitrite as N Sample ID A4 Client ID: BatchQC Batch ID: R15794 RunNo: SampType: CCV_4 Analysis Date: 12/27/2013 TestCode: EPA Method 300.0: Anions SeqNo: Nitrate+Nitrite as N Sample ID A5 Client ID: BatchQC Batch ID: R15794 RunNo: SampType: CCV_5 Analysis Date: 12/27/2013 TestCode: EPA Method 300.0: Anions SeqNo: Nitrate+Nitrite as N Sample ID A4 Client ID: BatchQC Batch ID: R15794 RunNo: SampType: CCV_4 Analysis Date: 12/28/2013 TestCode: EPA Method 300.0: Anions SeqNo: Nitrate+Nitrite as N Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit S Spike Recovery outside accepted recovery limits Page 16 of 28

229 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1312A22 17-Jan-14 Client: Project: City of Las Cruces City Of Las Cruces Foothills Lanfdill Monitorin Sample ID A5 Client ID: BatchQC Batch ID: R15794 RunNo: SampType: CCV_5 Analysis Date: 12/28/2013 TestCode: EPA Method 300.0: Anions SeqNo: Nitrate+Nitrite as N Sample ID A4 Client ID: BatchQC Batch ID: R15794 RunNo: SampType: CCV_4 Analysis Date: 12/28/2013 TestCode: EPA Method 300.0: Anions SeqNo: Nitrate+Nitrite as N Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit S Spike Recovery outside accepted recovery limits Page 17 of 28

230 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1312A22 17-Jan-14 Client: Project: City of Las Cruces City Of Las Cruces Foothills Lanfdill Monitorin Sample ID MB Client ID: PBW Batch ID: RunNo: /16/2014 SampType: MBLK Analysis Date: 1/16/2014 TestCode: EPA Method 504.1: EDB/DBCP SeqNo: Units: µg/l 1,2-Dibromo-3-chloropropane ,2-Dibromoethane Sample ID LCS Client ID: LCSW Batch ID: RunNo: /16/2014 SampType: LCS Analysis Date: 1/16/2014 TestCode: EPA Method 504.1: EDB/DBCP SeqNo: Units: µg/l 1,2-Dibromo-3-chloropropane ,2-Dibromoethane Sample ID 1312A22-001AMS Client ID: MW-3 Batch ID: RunNo: /16/2014 SampType: MS Analysis Date: 1/16/2014 TestCode: EPA Method 504.1: EDB/DBCP SeqNo: Units: µg/l 1,2-Dibromo-3-chloropropane ,2-Dibromoethane Sample ID 1312A22-001AMSD Client ID: MW-3 Batch ID: RunNo: /16/2014 SampType: MSD Analysis Date: 1/16/2014 TestCode: EPA Method 504.1: EDB/DBCP SeqNo: Units: µg/l 1,2-Dibromo-3-chloropropane ,2-Dibromoethane Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit S Spike Recovery outside accepted recovery limits Page 18 of 28

231 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1312A22 17-Jan-14 Client: Project: City of Las Cruces City Of Las Cruces Foothills Lanfdill Monitorin Sample ID 5ml rb Client ID: PBW Batch ID: R15681 RunNo: SampType: MBLK Analysis Date: 12/22/2013 TestCode: EPA Method 8260B: Volatiles, Table I SeqNo: Units: µg/l Benzene 1.0 Toluene 1.0 Ethylbenzene 1.0 Methyl tert-butyl ether (MTBE) 1.0 1,2-Dichloroethane (EDC) 1.0 1,2-Dibromoethane (EDB) 1.0 Acetone 10 Bromodichloromethane 1.0 Bromoform 1.0 Bromomethane Butanone 10 Carbon disulfide 10 Carbon Tetrachloride 1.0 Chlorobenzene 1.0 Chloroethane 2.0 Chloroform 1.0 Chloromethane 1.0 cis-1,2-dce 1.0 cis-1,3-dichloropropene 1.0 1,2-Dibromo-3-chloropropane 2.0 Dibromochloromethane 1.0 Dibromomethane 1.0 1,2-Dichlorobenzene 1.0 1,4-Dichlorobenzene 1.0 1,1-Dichloroethane 1.0 1,1-Dichloroethene 1.0 1,2-Dichloropropane Hexanone 10 4-Methyl-2-pentanone 10 Methylene Chloride 1.0 Styrene 1.0 1,1,1,2-Tetrachloroethane 1.0 1,1,2,2-Tetrachloroethane 1.0 Tetrachloroethene (PCE) 0.50 trans-1,2-dce 1.0 trans-1,3-dichloropropene 1.0 1,1,1-Trichloroethane 1.0 1,1,2-Trichloroethane 1.0 Trichloroethene (TCE) 1.0 Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit S Spike Recovery outside accepted recovery limits Page 19 of 28

232 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1312A22 17-Jan-14 Client: Project: City of Las Cruces City Of Las Cruces Foothills Lanfdill Monitorin Sample ID 5ml rb Client ID: PBW Batch ID: R15681 RunNo: SampType: MBLK Analysis Date: 12/22/2013 TestCode: EPA Method 8260B: Volatiles, Table I SeqNo: Units: µg/l Trichlorofluoromethane 1.0 1,2,3-Trichloropropane 1.0 Vinyl chloride 0.40 Xylenes, Total 2.0 Acrylonitrile 10 Bromochloromethane 2.0 Iodomethane 10 trans-1,4-dichloro-2-butene 10 Vinyl acetate 10 Surr: Dibromofluoromethane Surr: 1,2-Dichloroethane-d Surr: Toluene-d Surr: 4-Bromofluorobenzene Sample ID 100nglcs,200ngacac Client ID: LCSW Batch ID: R15681 RunNo: SampType: LCS Analysis Date: 12/22/2013 TestCode: EPA Method 8260B: Volatiles, Table I SeqNo: Units: µg/l Benzene Toluene Chlorobenzene ,1-Dichloroethene Trichloroethene (TCE) Surr: Dibromofluoromethane Surr: 1,2-Dichloroethane-d Surr: Toluene-d Surr: 4-Bromofluorobenzene Sample ID 5mL rb Client ID: PBW Batch ID: R15701 RunNo: SampType: MBLK Analysis Date: 12/23/2013 TestCode: EPA Method 8260B: Volatiles, Table I SeqNo: Units: %REC Surr: Dibromofluoromethane Surr: 1,2-Dichloroethane-d Surr: Toluene-d Surr: 4-Bromofluorobenzene Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit S Spike Recovery outside accepted recovery limits Page 20 of 28

233 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1312A22 17-Jan-14 Client: Project: City of Las Cruces City Of Las Cruces Foothills Lanfdill Monitorin Sample ID 100ng lcs Client ID: LCSW Batch ID: R15701 RunNo: SampType: LCS Analysis Date: 12/23/2013 TestCode: EPA Method 8260B: Volatiles, Table I SeqNo: Units: %REC Surr: Dibromofluoromethane Surr: 1,2-Dichloroethane-d Surr: Toluene-d Surr: 4-Bromofluorobenzene Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit S Spike Recovery outside accepted recovery limits Page 21 of 28

234 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1312A22 17-Jan-14 Client: Project: City of Las Cruces City Of Las Cruces Foothills Lanfdill Monitorin Sample ID MB Client ID: PBW Batch ID: R15700 RunNo: SampType: MBLK Analysis Date: 12/23/2013 TestCode: EPA Method 9060 TOC SeqNo: Total Organic Carbon 1.0 Sample ID LCS ST Client ID: LCSW Batch ID: R15700 RunNo: SampType: LCS Analysis Date: 12/23/2013 TestCode: EPA Method 9060 TOC SeqNo: Total Organic Carbon Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit S Spike Recovery outside accepted recovery limits Page 22 of 28

235 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1312A22 17-Jan-14 Client: Project: City of Las Cruces City Of Las Cruces Foothills Lanfdill Monitorin Sample ID MB Client ID: PBW Batch ID: RunNo: /23/2013 SampType: MBLK TestCode: Total Phenolics by SW Analysis Date: 12/23/2013 SeqNo: Units: µg/l Phenolics, Total Recoverable 2.5 Sample ID LCS Client ID: LCSW Batch ID: RunNo: /23/2013 SampType: LCS TestCode: Total Phenolics by SW Analysis Date: 12/23/2013 SeqNo: Units: µg/l Phenolics, Total Recoverable Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit S Spike Recovery outside accepted recovery limits Page 23 of 28

236 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1312A22 17-Jan-14 Client: Project: City of Las Cruces City Of Las Cruces Foothills Lanfdill Monitorin Sample ID 1312A22-001Ddup Client ID: MW-3 Batch ID: R15709 RunNo: SampType: DUP Analysis Date: 12/23/2013 TestCode: SM2510B: Specific Conductance SeqNo: Units: µmhos/cm Conductivity Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit S Spike Recovery outside accepted recovery limits Page 24 of 28

237 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1312A22 17-Jan-14 Client: Project: City of Las Cruces City Of Las Cruces Foothills Lanfdill Monitorin Sample ID MB Client ID: PBW Batch ID: R15792 RunNo: SampType: MBLK Analysis Date: 12/30/2013 TestCode: SM 4500 NH3: Ammonia SeqNo: Nitrogen, Ammonia 1.0 Sample ID LCS Client ID: LCSW Batch ID: R15792 RunNo: SampType: LCS Analysis Date: 12/30/2013 TestCode: SM 4500 NH3: Ammonia SeqNo: Nitrogen, Ammonia Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit S Spike Recovery outside accepted recovery limits Page 25 of 28

238 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1312A22 17-Jan-14 Client: Project: City of Las Cruces City Of Las Cruces Foothills Lanfdill Monitorin Sample ID 1312A22-001Ddup SampType: DUP TestCode: SM4500-H+B: ph Client ID: MW-3 Batch ID: R15709 RunNo: Analysis Date: 12/23/2013 SeqNo: Units: ph units ph H Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit S Spike Recovery outside accepted recovery limits Page 26 of 28

239 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1312A22 17-Jan-14 Client: Project: City of Las Cruces City Of Las Cruces Foothills Lanfdill Monitorin Sample ID mb-1 Client ID: PBW Batch ID: R15709 RunNo: SampType: MBLK Analysis Date: 12/23/2013 TestCode: SM2320B: Alkalinity SeqNo: CaCO3 Total Alkalinity (as CaCO3) 20 Sample ID lcs-1 Client ID: LCSW Batch ID: R15709 RunNo: SampType: LCS Analysis Date: 12/23/2013 TestCode: SM2320B: Alkalinity SeqNo: CaCO3 Total Alkalinity (as CaCO3) Sample ID mb-2 Client ID: PBW Batch ID: R15709 RunNo: SampType: MBLK Analysis Date: 12/23/2013 TestCode: SM2320B: Alkalinity SeqNo: CaCO3 Total Alkalinity (as CaCO3) 20 Sample ID lcs-2 Client ID: LCSW Batch ID: R15709 RunNo: SampType: LCS Analysis Date: 12/23/2013 TestCode: SM2320B: Alkalinity SeqNo: CaCO3 Total Alkalinity (as CaCO3) Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit S Spike Recovery outside accepted recovery limits Page 27 of 28

240 QC SUMMARY REPORT Hall Environmental Analysis Laboratory, Inc. WO#: 1312A22 17-Jan-14 Client: Project: City of Las Cruces City Of Las Cruces Foothills Lanfdill Monitorin Sample ID MB Client ID: PBW Batch ID: RunNo: /25/2013 SampType: MBLK Analysis Date: 12/27/2013 TestCode: SM2540C MOD: Total Dissolved Solids SeqNo: Total Dissolved Solids 20.0 Sample ID LCS Client ID: LCSW Batch ID: RunNo: /25/2013 SampType: LCS Analysis Date: 12/27/2013 TestCode: SM2540C MOD: Total Dissolved Solids SeqNo: Total Dissolved Solids Qualifiers: * Value exceeds Maximum Contaminant Level. B Analyte detected in the associated Method Blank E Value above quantitation range H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits Not Detected at the Reporting Limit O RSD is greater than RSDlimit P Sample ph greater than 2 for VOA and TOC only. R RPD outside accepted recovery limits RL Reporting Detection Limit S Spike Recovery outside accepted recovery limits Page 28 of 28

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