To: Nate Nemani, U.S. EPA Ref. No.:

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1 October 15, 2018 To: Nate Nemani, U.S. EPA Ref. No.: From: Cc: Subject: JohnEric Pardys, GHD/kf/32 Dave Favero, RACER RACER Nodular Industrial Land Evaluation GHD Services Inc. (GHD) has prepared the following memorandum at the request of RACER to evaluate groundwater sample results collected from the start of the RCRA Facility Investigation (RFI) (November 1998) to the present at RACER s Saginaw Nodular Industrial Land (Site) in Saginaw, Michigan. The purpose of the evaluation was to identify any potential concerns when comparing the data to more recent screening criteria (Part 201 Generic Cleanup Criteria and s dated December 31, 2013 and DRAFT 2017 Part 201 Generic Cleanup Criteria and s), than was used to screen the data in the September 28, 2012 Supplemental RFI Report. The following figures, tables, and attachments were prepared in support of this groundwater evaluation: Figure 1 Site Plan Figure 2 Investigative Unit G South Evaluation Figure 3 Investigative Unit H Evaluation Figure 4 Investigative Unit I Evaluation Table 1 Portion of IU G Data Screened Against Part 201 Generic Cleanup Criteria and s dated December 31, 2013 Table 2 Portion of IU G Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s Table 3 IU H Data Screened Against Part 201 Generic Cleanup Criteria and s dated December 31, 2013 Table 4 IU H Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s GHD 455 Phillip Street Waterloo Ontario N2L 3X2 Canada T F W

2 Table 5 IU I Data Screened Against Part 201 Generic Cleanup Criteria and s dated December 31, 2013 Table 6 IU I Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s Attachment A 2017 CA 750 Environmental Indicator Annual Monitoring Results Background The Site was part of a larger facility, formerly owned by General Motors Corporation (GMC), called the General Motors Powertrain Saginaw Metal Casting Operations (SMCO Facility). Prior to the 2009 GMC bankruptcy, the SMCO Facility encompassed approximately 700 acres. The SMCO Facility was divided into ten Investigative (IUs); based on GMC s historical use of the property. Each IU may contain several Areas of Interest (AOIs). Following the bankruptcy, in 2011 approximately 315 acres were transferred to RACER and includes a portion of the Former Nodular Iron Plant Area (IU G), the Former Waste Water Treatment System and Stormwater Ditch (IU H), a portion of the Classified Sands Staging Area (portion of IU I), and an un impacted strip of land to the north of the GMC Landfill (IUJ). The majority of the remaining lands are owned and operated by General Motors LLC, with a small portion (northern half of IU G) owned and operated by another entity. In May 1995, the SMCO Facility was placed under a RCRA Section 3008(h) Unilateral Administrative Order (UAO) which required GMC to complete specific requirements in order to evaluate the environmental impacts at the Facility. These requirements included the completion of a: Description of Current Conditions report (DOCC), Interim Measures (IM) work plan and report, RCRA Facility Investigation (RFI) work plan and report, and Corrective Measures Study (CMS) work plan and report. The work at the Site is currently being completed under Administrative Order on Consent (RCRA ) (AOC) between U.S. EPA and RACER Trust for the Saginaw Nodular Industrial Land (Site) located in Saginaw, Michigan. The AOC became effective on September 29, The RFI was conducted under the oversight of U.S. EPA at the SMCO Facility by GMC in several phases between 1998 and 2007 in accordance with 1995 UAO. The purpose of the RFI was to (i) define the nature and extent of contamination that may be impacting human health and the environment, (ii) focus investigation activities such that the subsequent phases becoming increasingly specific and data quality is sufficient to support the RFI baseline risk assessments, and (iii) collect data sufficient to support Corrective Measures Study. The results of the investigations were submitted to U.S. EPA in the Phase 1C RFI in March 2007 and included a human health risk assessment (HHRA) and an ecological risk assessment (ERA) (CRA, 2007). The Phase 1C RFI included field investigations in all IUs that thoroughly investigated all relevant media (sediment, soil, surface water, and groundwater) for a conservative list of chemicals in a phased approach. The following summarizes the total number of investigative samples for each media at the Site prior to 2007: 328 samples Sediment 12 samples Memo3231 2

3 Soil 594 samples Surface Water 8 samples All data were screened against the Michigan Act 451, Part 201 Generic Cleanup Criteria (June 2006) and the resulting findings were used to support decisions regarding the need for additional investigations. To the extent possible, chemicals with exposure media concentrations above screening criteria were delineated vertically and horizontally. At the completion of the Phase 1C RFI, sufficient data were available to complete quantitative risk assessments HHRA and ERA for the SMCO Facility under all current and reasonably expected future land uses. The risk assessments were completed using all the data collected during the RFI. The risk assessment conclusions from the Phase 1C RFI are summarized below: Human Health Risk Assessment Based on the assessment completed in 2007, and considering potential exposure routes, pathways, and Sitespecific conditions, current human exposures were determined to be under control according to U.S. EPA s guidance for the Environmental Indicators CA725 determination (ENVIRON, 2003). The CA725 (Current Human Exposures Under Control) was approved on 9/29/2004 and the CA750 (Migration of Contaminated Under Control) was approved on 8/25/2004. The results of the RFI baseline HHRA are intended to identify where a release of hazardous waste or constituents from the larger facility may cause exposures to be significant enough in the future to warrant additional investigations and/or corrective measures. The HHRA was conducted to assess potential impacts of detected COCs on all types of human receptors, both onsite and offsite of the larger facility. These included: OnSite: Routine workers OffSite: Residents Maintenance workers Trespassers Construction workers Routine workers Maintenance workers Recreational visitors Using U.S. EPA risk assessment guidance, the HHRA was calculated for the human receptors listed above, evaluating potential exposure to the COCs via the following pathways: Inhalation (vapors, particulates) Ingestion (swallowing) Dermal absorption (via the skin) The goal for human exposure risk at the Facility is a noncancer hazard index (HI) of 1 or less, and a cumulative Site cancer risk (CSCR) of 1 x 104 (one in 10,000). The baseline HHRA concluded that the potential exposures to routine workers, maintenance workers, trespassers, and off facility residents were not significant relative to reasonable maximum exposure under current and reasonably expected future land and groundwater uses at and around the Facility. However, there was the potential for unacceptable noncancer hazards to a hypothetical construction worker from exposures to elevated ammonia and ph levels in shallow groundwater in IU G. In addition, there was a Memo3231 3

4 potential for unacceptable exposures to off Facility construction workers if off Facility migration of overburden groundwater from IU G, exhibiting high ph levels, were to occur. Furthermore, the significance of risks to off Site residents were evaluated for potential exposure to volatile constituents in shallow groundwater via vapor migration into indoor air, windblown dust and vapors from on Site soil, and direct contact with soil in redeveloped areas of the Site. Potential exposures of residents at IU G TriCap were evaluated using data collected within this former area of IU G and default residential assumptions. Based on the results of this risk evaluation, potential exposures of off Facility residents to soil and indoor air vapors from groundwater are not significant. The significance of hypothetical exposures to constituents that could potentially migrate from shallow groundwater in each on Facility IU to the Saginaw River was evaluated. This evaluation determined that the potential migration of constituents in on Facility groundwater to the Saginaw River is not expected to result in unacceptable human health risk via exposure to surface water. U.S. EPA provided comments on the Phase 1C RFI on several occasions in the form of letters and s. Comments from the U.S. EPA were initially received in a letter dated May 24, 2007 regarding the Phase 1C RFI. Response to U.S. EPA comments were submitted to the U.S. EPA on July 26, The approved EI CA750 (Migration of Contaminated Under Control) included a proposed EI monitoring program which was initiated by GMC in The purpose of the monitoring plan was to confirm that the existing areas of groundwater contamination at the Site remain stable. GMC conducted the EI monitoring program annually until the bankruptcy after which RACER continued the annual sampling on its portion of the Site. Since 2003, there have been fourteen rounds of annual CA 750 EI sampling completed with the results of the analyses continuing to be consistent or lower than the data evaluated in EIs. This data shows that concentrations of groundwater contaminants continues to be stable and that groundwater contamination is not continuing to migrate. The results are submitted to U.S. EPA annually with recommendations for modifications to the program, if applicable. Modifications to the program (e.g., removal of parameters after four consecutive rounds of concentrations below screening criteria, removal of monitoring wells after all parameters have four consecutive rounds of concentrations below screening criteria) are made with U.S. EPA s concurrence. U.S. EPA approved modifications to the program via on November 12, 2009, November 8, 2013, November 4, 2014, and December 22, Following the bankruptcy and on behalf of RACER, a supplemental RFI report (CRA, 2012) was submitted to U.S. EPA, which focused on the IUs which were owned by RACER Properties and included sampling results and findings associated with work onsite since the submittal of the Phase 1C RFI. In addition, the supplemental RFI report included revisions and/or supplements to address U.S. EPA comments received since submittal of the Phase 1C Report, as appropriate for the Site. For general background, note that following the bankruptcy and on behalf of General Motors LLC, a RFI and Risk Assessment Report was submitted to U.S. EPA in August 2012, which focused on the IUs which were owned by General Motors LLC, with supplemental information provided in January Upon review, U.S. EPA provided comments on the RFI Report in October of 2014, which General Motors LLC responded to in January The U.S. EPA approved the RFI on August 5, Memo3231 4

5 Criteria and s The data were compared against the following Part 201 Generic Cleanup Criteria and s dated December 31, 2013: Surface Water Interface (GSI) Criteria (RDW) Criteria Non Volatilization to Indoor Air Inhalation (GVIAI) Criteria Water Solubility Flammability/ The exceedances of the Part 201 Generic Cleanup Criteria and s dated December 31, 2013 are shown in the tables, however, only monitoring wells located at the downgradient property boundary of RACER s Site were included in the discussion, since RACER is proposing restrictions on groundwater extraction and use at the Site. For additional consideration and frame of reference, as the proposed 2017 screening levels have not yet been adopted, the data were screened against the following DRAFT 2017 Part 201 Generic Cleanup Criteria and s: (RDW) Criteria Water Solubility Volatilization to Indoor Air (VIA) Tier 1 (include generic default assumptions) VIA Tier 2 (incorporate physical Site characteristics, soil type sand, groundwater temperature being 10 degrees Celsius [located in Saginaw County] and depth to groundwater being 2feet) Non VIA Tier 3 (incorporates physical Site characteristics and building features slabongrade construction and over 50,000 square feet footprint) The exceedances of the DRAFT 2017 Part 201 RDW Criteria are shown in the tables, however, only monitoring wells located at the downgradient property boundary of RACER s Site were included in the discussion, since RACER is proposing restrictions on groundwater extraction and use at the Site. The exceedances of the DRAFT 2017 Part 201 VIA (Tier 1, Tier 2, and Tier 3A) s are shown in the tables, however, only monitoring wells located within 100ft of the property boundary of RACER s Site were included in the discussion as that is the distance of the lateral inclusion zone for chlorinated compounds (MDEQ Presentation Vapor Intrusion for the Regulatory Community, April 11, 2017). Please note distance of the lateral inclusion zone for petroleumbased products is 30ft. RACER is proposing that exceedances of the DRAFT 2017 Part 201 VIA s identified at locations internal to the Site be Memo3231 5

6 addressed through a requirement included in the restrictive covenant for a vapor intrusion evaluation prior to building or occupying any structures onsite. Data Evaluation For ease of review the groundwater data was evaluated for each Investigative Unit (IU) as presented on Figure 1. Those constituent concentrations exceeding the Part 201 Generic Cleanup Criteria and Screening Levels dated December 31, 2013 and DRAFT 2017 Part 201 Generic Cleanup Criteria and s are highlighted in the tables (exceedances of screening levels are highlighted in red and exceedances of screening levels in the latest round of groundwater data for a given location are also highlighted in yellow). The discussion provided below focuses on more recent groundwater sampling events for a given location. samples have been collected using both high flow and low flow purging techniques. In general, during the RFI Phase 1A and 1B sampling events at locations where monitoring wells were installed using hollow stem auger (HSA) methods groundwater samples were collected using bailers. When direct push techniques were employed later in Phase 1B and 1C sampling events, groundwater samples were collected directly from the sampling unit. Use of low flow purging techniques commenced in 2001; however, the first full round of low flow sampling was completed in Current state of the art low flow sampling has been used since 2005 to collect groundwater samples. IU G Former Nodular Iron Plant (a portion of) Figure 2 presents the monitoring locations where groundwater samples were collected since the initiation of the RFI (November 1998) to the present in RACER s portion of IUG, that were screened against applicable criteria. Table 1 presents groundwater data from the initiation of the RFI (November 1998) to the present from RACER s portion of IU G compared to the Part 201 Generic Cleanup Criteria and s dated December 31, Iron exceeds the RDW Criteria (0.3 ) near the downgradient property boundary at four locations (MW04040, TMW04127, TMW04130, and TMW04135). Two sampling events were conducted at MW04040 (1998 and 2004) and one sampling event was conducted at the temporary monitoring wells in The most recent sampling event at MW04040 reported a concentration of iron at 7.0J. The 2003 sampling event reported concentrations of iron ranging from 3.3J to 7.3. The turbidity of the samples was low. The exceedances are of the aesthetic drinking water criterion. The results are also above the HealthBased Value (2.0 ). GHD recommends resampling permanent monitoring well MW04040 and analyzing the sample for iron to evaluate current conditions. Manganese exceeds the RDW Criteria (0.05 ) near the downgradient property boundary at four locations (MW04040, TMW04127, TMW04130, and TMW04135). Multiple sampling events were conducted at MW04040 between 1998 and 2005 and one sampling event was conducted at the temporary monitoring wells in The most recent sampling event at MW04040 reported a concentration of manganese at and it appears there is a downward manganese concentration trend over time. The 2003 sampling event reported concentrations of manganese in the temporary wells ranging from 0.55 J to 0.77 J. The turbidity of the samples was low. The Memo3231 6

7 exceedances are of the aesthetic drinking water criterion. The results are below the HealthBased Value (0.86 ). Therefore, no further action is recommended. ph is outside the acceptable range of the RDW Criteria (6.5 to 8.5) near the downgradient property boundary at MW04040 at a reading of GHD currently monitors ph in this well as part of the annual Environmental Indicator (EI) groundwater sampling event and recommends continuing to monitor for ph in this well. Figure 2 presents the monitoring locations where groundwater samples were collected since the initiation of the RFI (November 1998) to the present in RACER s portion of IUG, that were screened against applicable criteria. Table 2 presents groundwater data from the initiation of the RFI (November 1998) to the present from the RACER portion of IU G compared to the DRAFT 2017 Part 201 Generic Cleanup Criteria and s. The RDW Criteria for iron and ph did not change or has increased and does not change the evaluation between the current Part 201 Generic Cleanup Criteria and s dated December 31, 2013 and the DRAFT 2017 Part 201 Generic Cleanup Criteria and s. See above for a discussion on the exceedance. Manganese exceeds the RDW Criteria (0.05 ) near the downgradient property boundary at four locations (MW04040, TMW04127, TMW04130, and TMW04135). Multiple sampling events were conducted at MW04040 between 1998 and 2005 and one sampling event was conducted at the temporary monitoring wells in The most recent sampling event at MW04040 reported a concentration of manganese at and it appears there is a downward manganese concentration trend over time. The 2003 sampling event reported concentrations of manganese in the temporary wells ranging from 0.55 J to 0.77 J. The turbidity of the samples was low. The exceedances are of the aesthetic drinking water criterion. Two of the samples collected from the temporary wells also marginally (less than 10%) exceed the HealthBased Value (0.70 ). The other two samples do not exceed the HealthBased Value. Therefore, no further action is recommended. Vanadium exceeds the RDW Criteria ( ) near the downgradient property boundary at one location (TMW04130) during one sampling event in 2003 at an estimated concentration of J. Vanadium was not detected in other samples collected in the IU, however, the reporting limits were above the RDW Criteria. GHD recommends resampling MW04040 (nearest permanent monitoring well from sampling location TMW04130) for vanadium to evaluate current conditions. IU H Wastewater Treatment System and Stormwater Discharge Ditch Figure 3 presents the monitoring locations where groundwater samples were collected since the initiation of the RFI (November 1998) to the present, that were screened against applicable criteria in IU H. Table 3 presents groundwater data from the initiation of the RFI (November 1998) to the present in IU H compared to the Part 201 Generic Cleanup Criteria and s dated December 31, Aluminum exceeds RDW Criteria (0.05 ) near the downgradient property boundary at four locations (MW04757, MW05443, MW15964 and MW17661) in multiple sampling events conducted between Memo3231 7

8 1998 and The most recent sampling event results reported aluminum concentrations ranging from to and concentrations of aluminum over time at all locations had a downward trend. The exceedances in the most recent sampling event are of the aesthetic drinking water criterion. The results from the most recent sampling event are below the HealthBased Value (0.3 ), therefore, no further action is recommended. Antimony exceeds the RDW Criteria (0.006 ) near the downgradient property boundary at one location (MW15457) in a sample collected in January 2005 with an estimated concentration of There were two previous sampling events conducted in 1998 and 2000 for which samples were analyzed for antimony and it was not detected at The dissolved phase concentration of antimony was also analyzed during previous sampling events in 1998 and 2000 and were not detected at Please note the reporting limits are above the RDW Criteria. GHD recommends resampling MW15457 for antimony to evaluate current conditions. Hexavalent chromium (dissolved) exceeds GSI Criteria (0.011 ) near the downgradient property boundary at one location (MW05443) in a sample collected in 2004 with a concentration of Please note, however, that the total chromium result for this sample was not detected at a detection limit of A subsequent sample that was collected in 2005 and analyzed for total chromium was not detected again. Therefore, since there appears to be a discrepancy in the data, all other samples collected in the IU were below screening levels for hexavalent chromium, and the well is located approximately 1700 ft from the Saginaw River (the closest downgradient surface water body), no further action is recommended. Total Chromium exceeded the RDW Criteria (0.1 ) near the downgradient property boundary at one location (MW17661) in samples collected in 1998, 2000, and 2005 at concentrations ranging from to The dissolved phase concentration of total chromium was also analyzed during sampling events in 1998 and 2000 and was not detected at Therefore, no further action is recommended. Cobalt exceeds the RDW Criteria (0.04 ) near the downgradient property boundary at one location (MW15457) with an estimated concentration of The sample was collected during the 1998 sampling event. No other samples collected from this location were analyzed for cobalt. The dissolved phase concentration of cobalt was also analyzed during this event and was not detected at In addition, all dissolved phase cobalt results in this IU were not detected at Therefore, no further action is recommended. Iron exceeds the RDW Criteria (0.3 ) near the downgradient property boundary at five locations (MW04757, MW05443, MW15457, MW15964, and MW17661) at concentrations ranging from 7.71 to 201. The exceedances are associated with samples collected in 1998 using a bailer, with the exception of MW05443 which was sampled using low flow procedures in Dissolved phase iron was also analyzed during these sampling events and reported concentrations ranged from to The exceedances are of the aesthetic drinking water criterion. The dissolved phase results are below the HealthBased Value (2.0 ), with the exception of MW05443 (22.3 ). GHD recommends resampling MW05443 for iron to evaluate current conditions Memo3231 8

9 Manganese exceeds the RDW Criteria (0.05 ) near the downgradient property boundary at five locations (MW04757, MW05443, MW15457, MW15964, and MW17661) in multiple sampling events conducted between 1998 and The most recent sampling event reported concentrations of manganese ranging from to 1.05 and all locations had a downward trend in concentrations of manganese over time. The exceedances are of the aesthetic drinking water criterion. The 2005 results are below the HealthBased Value (0.86 ), with the exception of one location MW Dissolved phase manganese was also analyzed at MW04757 during previous sampling events in 1998 and 2000, with results of and 0.348, respectively, which are below the HealthBased Value. Therefore, no further action is recommended. Nickel exceeds RDW Criteria (0.1 ) near the downgradient property boundary at one location (MW17661) in two of the three sampling events conducted between 1998 and The most recent sampling event in 2005 reported a nickel concentration of Nickel also exceeds the GSI Criteria (0.122 ) and is near a surface water feature that ultimately discharges to the Saginaw River. Dissolved phase nickel was also analyzed during previous sampling events in 1998 and The dissolved concentration of nickel in the 1998 sample (0.111 ) was marginally above RDW Criteria and the dissolved concentration of nickel (0.054 ) in the 2000 sampling event is below the RDW Criteria and the GSI Criteria. In addition, all other locations within this IU were analyzed for dissolved phase nickel and results were below RDW Criteria and the GSI Criteria. Therefore, no further action is recommended. Sodium (dissolved) exceeds RDW Criteria (230 ) near the downgradient property boundary at one location (MW05443) during one sampling event in 2004 with a concentration of 240. No other samples were analyzed for sodium in IU H. The total sodium concentration for the same event was an estimated concentration of 220. Given the total sodium concentration was not above RDW Criteria, sodium is not considered a Site constituent, and the exceedance is marginal (10%), no further action is recommended. Vanadium exceeds RDW Criteria ( ) near the downgradient property boundary at one location (MW17661) in all three sampling events conducted between 1998 and The most recent sampling event in 2005 reported an estimated vanadium concentration of The dissolved phase concentration of vanadium was also analyzed during the 1998 and 2000 events and were not detected at Please note however the reporting limit is above the RDW Criteria. GHD recommends resampling MW17661 for vanadium. Chloride exceeds the RDW Criteria (250 ) near the downgradient property boundary at one location (MW05443) during one sampling event in 2004 with a concentration of 440. No other samples were analyzed for chloride in IU H. Chloride is not a Site constituent and the source is expected to be associated with the use of salt in the winter to manage snow and ice. Therefore, no further action is recommended. ph is outside the acceptable range of the RDW Criteria (6.5 to 8.5) near the downgradient property boundary at one permanent monitoring well (MW05442) and four temporary well locations (TMW04356, TMW05447, TMW05447A, and TMW05454) at readings between 9.89 to taken between 2001 and ph is currently monitored downgradient of the locations identified above as part Memo3231 9

10 of the annual Environmental Indicator (EI) groundwater sampling event. The most recent EI groundwater sampling results are provided in Attachment A which show that ph does not exceed RDW Criteria downgradient of the above locations. GHD recommends continued monitoring for ph as part of the groundwater monitoring program. Figure 3 presents the monitoring locations where groundwater samples were collected since the initiation of the RFI (November 1998) to the present, that were screened against applicable criteria in IU H. Table 4 presents all groundwater data from the initiation of the RFI (November 1998) to the present in IU H compared to the DRAFT 2017 Part 201 Generic Cleanup Criteria and s. The RDW Criteria for aluminum, antimony, chromium, iron, sodium, chloride, and ph did not change or has increased and does not change the analysis between the current Part 201 Generic Cleanup Criteria and s dated December 31, 2013 and the DRAFT 2017 Part 201 Generic Cleanup Criteria and s. See above for a discussion on the exceedances. Manganese exceeds the RDW Criteria (0.05 ) near the downgradient property boundary at five locations (MW04757, MW05443, MW15457, MW15964, and MW17661) in multiple sampling events conducted between 1998 and The most recent sampling event reported concentrations of manganese ranging from to 1.05 and all locations had a downward trend in concentrations of manganese over time. The exceedances are of the aesthetic drinking water criterion. The 2005 results are below the HealthBased Value (0.7 ), with the exception of one location, MW Dissolved phase manganese was also analyzed during previous sampling events in 1998 and 2000, with results of and 0.348, respectively, which are below the HealthBased Value. Therefore, no further action is recommended. Cobalt exceeds the RDW Criteria ( ) near the downgradient property boundary at four locations (MW04757, MW15457, MW15964, and MW17661) at concentrations ranging from 0.02 to The samples were collected during the 1998 sampling event. No other samples collected from these locations were analyzed for cobalt. The dissolved phase concentration of cobalt was also analyzed during this event and were not detected at Please note however the reporting limit is above the RDW Criteria. In addition, all dissolved phase cobalt results in this IU were not detected at Therefore, GHD recommends resampling MW15457 and MW17661 (locations that already have proposed monitoring) for cobalt to evaluate current conditions. Nickel exceeds RDW Criteria (0.036 ) near the downgradient property boundary at one location (MW17661) in all three sampling events conducted between 1998 and The most recent sampling event in 2005 reported a nickel concentration of Dissolved phase nickel was also analyzed during previous sampling events in 1998 and The dissolved concentration of nickel are also above RDW Criteria. Therefore, GHD recommends resampling MW17661 for nickel to evaluate current conditions. Vanadium exceeds RDW Criteria ( ) near the downgradient property boundary at one location (MW17661) in all three sampling events conducted between 1998 and The most recent sampling event in 2005 reported an estimated vanadium concentration of The dissolved phase concentration of vanadium was also analyzed during the 1998 and 2000 events and was not Memo

11 detected at Please note however the reporting limit is above the RDW Criteria. GHD recommends resampling MW17661 for vanadium. Ammonia exceeds the VIA Tier 1 (1.9 ) and Tier 2 (1.9 ) s near the downgradient property boundary at 3 locations (MW05443, TMW05447 and TMW05457). Two sampling events were conducted at MW05443 and analyzed for ammonia (2004 and 2013) and one sampling event was conducted at the temporary monitoring wells in 2001 and 2002, respectively. The most recent sampling event at MW05443 reported a concentration of ammonia at 7.2, which is also above the Non VIA Tier 3A (5.9 ) s. The ammonia results for samples collected in the temporary monitoring wells (TMW05447 and TMW05457) in the 2001 and 2002 sampling events were 4.45 and 1.96, respectively. GHD recommends conducting additional sampling for ammonia at MW05443 to evaluate current conditions. IU I Classified Sand Staging Area Figure 4 presents the monitoring locations where groundwater samples were collected since the initiation of the RFI (November 1998) to the present, that were screened against applicable criteria in IU I. Table 5 presents groundwater data from the initiation of the RFI (November 1998) to the present in IU I compared to the Part 201 Generic Cleanup Criteria and s dated December 31, Data were screened against GSI Criteria, however, there are no surface water features in close proximity to this IU, therefore, no discussion has been provided on exceedances. 2,4Dimethylphenol exceeds RDW Criteria (0.37 ) near the property boundary at one location (TMW07962) during one sampling event conducted in 2001 with a concentration of No other samples were collected from this location. Multiple sampling events were conducted at nearby monitoring well MW07959 between 1998 and The most recent sampling conducted in 2005 reported a concentration of 2,4Dimethylphenol of 0.14 which is below the RDW Criteria. In addition, the concentration of 2,4Dimethylphenol had a downward trend over time. Therefore, given the downward trend in 2,4Dimethylphenol concentrations over time in nearby monitoring well MW07959 and the marginal exceedance of criteria (< 10%), no further action is recommended. Pentachlorophenol exceeds the RDW Criteria (0.001 ) near the downgradient property boundary at two locations (TMW07459 and TMW07962) during one sampling event conducted in 2001 at concentrations of and , respectively. No other samples were collected from this location. Multiple sampling events were conducted at nearby monitoring well MW07959 between 1998 and The most recent sampling conducted in 2005 for pentachlorophenol was not detected at Please note that the reporting limit is above the RDW Criteria, therefore, GHD recommends resampling MW07959 for pentachlorophenol to evaluate current conditions. Aluminum exceeds RDW Criteria (0.05 ) near the downgradient property boundary at one location (MW07959) in multiple sampling events conducted between 1998 and The most recent sampling event reported a concentration of aluminum of 0.11 and had a downward trend in concentration of aluminum over time. The exceedance is of the aesthetic drinking water criterion. The most recent result is below the HealthBased Value (0.3 ), therefore, no further action is recommended Memo

12 Iron exceeds the RDW Criteria (0.3 ) near the downgradient property boundary at one location (MW07959) during one sampling event using a bailer conducted in 1998 with a concentration of 141. Dissolved phase iron was also sampled during this sampling event and reported a concentration of which is less than the RDW Criteria. Therefore, no further action is recommended. Manganese exceeds RDW Criteria (0.05 ) near the downgradient property boundary at one location (MW07959) in multiple sampling events conducted between 1998 and The most recent sampling event reported a concentration of and there has been a downward trend in concentration of manganese over time. The exceedances are of the aesthetic drinking water criterion. The most recent result is below the HealthBased Value (0.86 ). Therefore, no further action is recommended. Ammonia exceeds RDW Criteria (10 ) near the downgradient property boundary at two locations (TMW07459 and TMW07962) during a sampling event conducted in 2001 at concentrations of 30.5 and 24.8, respectively. Most recent sampling in the vicinity of these sample locations (MW07959) in 2005 reported concentrations of ammonia at 10, which is at the RDW Criteria. Since ammonia readily degrades and is at the RDW Criteria, no further action is recommended. Cyanide exceeds RDW Criteria (0.2 ) near the property boundary at two locations (TMW07962 and MW07959) at concentrations of 0.48 and 0.21, respectively. GHD recommends conducting additional sampling for cyanide at MW07959 to evaluate current conditions ph is outside the acceptable range of the RDW Criteria (6.5 to 8.5) near the downgradient property boundary at five locations. The ph readings were above the acceptable ph range at 9.29 to GHD recommends conducting additional sampling for ph at MW07959 to evaluate current conditions Figure 4 presents the monitoring locations where groundwater samples were collected since the initiation of the RFI (November 1998) to the present, that were screened against applicable criteria in IU I. Table 6 presents all groundwater data from the initiation of the RFI (November 1998) to the present in IU I compared to the DRAFT 2017 Part 201 Generic Cleanup Criteria and s. The RDW Criteria for pentachlorophenol, aluminum, iron, ammonia, cyanide, and ph did not change or has increased and does not change the analysis between the current Part 201 Generic Cleanup Criteria and s dated December 31, 2013 and the DRAFT 2017 Part 201 Generic Cleanup Criteria and s. See above for a discussion on the exceedances. 2,4Dimethylphenol exceeds RDW Criteria (0.12 ) near the property boundary at two locations (TMW07962 and MW07959) at concentrations of 0.39 and The sample from TMW07962 was collected during one sampling event conducted in Multiple sampling events were conducted at monitoring well MW07959 between 1998 and The most recent sampling conducted in 2005 reported a concentration of 2,4Dimethylphenol of 0.14 which is marginally above the RDW Criteria. The concentration of 2,4Dimethylphenol had a downward trend over time, Therefore, given the downward trend in 2,4Dimethylphenol concentrations over time in nearby monitoring well MW07959 and the marginal exceedance of criteria (< 10%), no further action is recommended Memo

13 Phenol exceeds RDW Criteria (1.2 ) near the property boundary at one location (TMW07962) during one sampling event conducted in 2001 at a concentration of 2.6. Multiple sampling events were conducted at nearby monitoring well MW07959 between 1998 and The most recent sampling conducted in 2005 for phenol was detected at 0.11, which is below the RDW Criteria. In addition, the concentration of phenol had a downward trend over time. Therefore, given the downward trend in phenol concentrations over time in nearby monitoring well MW07959, no further action is recommended. Cobalt exceeds the RDW Criteria ( ) near the downgradient property boundary at one location (MW07959) with a concentration of Dissolved phase cobalt was also analyzed at this location during this sampling event and reported nondetect at Please note all dissolved phase cobalt results in this IU were not detected at 0.01, however the reporting limit is above the RDW Criteria. Therefore, GHD recommends resampling MW07959 for cobalt to evaluate current conditions. Lead exceeds RDW Criteria (0.001 ) near the downgradient property boundary at one location (MW07959) with an estimated concentration of Please note that all dissolved phase lead results in this IU were not detected at 0.002, however, the reporting limit is above the RDW Criteria. Given the dissolved phase results and the exceedance is marginal (10%), no further action is recommended. Manganese exceeds RDW Criteria (0.05 ) near the downgradient property boundary at one location (MW07959) in multiple sampling events conducted between 1998 and The most recent sampling reported a concentration of manganese of and there was a downward trend in concentration of manganese over time. The exceedance is of the aesthetic drinking water criterion. The most recent result is below the HealthBased Value (0.7 ). Therefore, no further action is recommended. In summary, based on the comparison to the Part 201 Generic Cleanup Criteria and s dated December 31, 2013 and DRAFT 2017 Part 201 Generic Cleanup Criteria and s, various metals may be present in groundwater near the downgradient property boundaries at concentrations above the RDW Criteria and have the potential to migrate offsite. In addition, elevated ph is present across the Site and ammonia was found above VIA s at the downgradient property boundary. As a result, GHD proposes the following activities: IU G Former Nodular Iron Plant (a portion of) Sample MW04040 and analyze the sample for iron and vanadium Continued monitoring of ph as part of the groundwater monitoring program IU H Wastewater Treatment System and Stormwater Discharge Ditch Sample MW15457 and analyze the sample for antimony and cobalt Sample MW05443 and analyze the sample for iron and ammonia Sample MW17661 and analyze the sample for cobalt, nickel, and vanadium Memo

14 IU I Classified Sand Staging Area Sample MW07959 and analyze the sample for cobalt, cyanide, pentachlorophenol, and ph The results of the above proposed sampling and analyses will be evaluated in order to recommend any additional action. A summary of the results and evaluation will be prepared and submitted to U.S. EPA for review Memo

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16 X X FIRST AVE. 002 WA GN SIXTH STREET EIGHTH STREET WASHINGTON AVENUE NINTH STREET TENTH STREET SMCO PLANT FOURTEENTH STREET PARKING AREA FLOODED AREA FORMER NODULAR IRON PLANT AREA FNDN FNDN FLOODED AREA WASHINGTON AVENUE DIEKMANN ST. OUTER DRIVE X MW TMW04938 TMW ft B4 (2000G) MW04438 B3 (2000G) FORMER NODULAR IRON PLANT AREA B16 MW'B' A LEGEND INVESTIGATIVE UNIT BOUNDARY AND IDENTIFIER RACER PROPERTY 586 X X X X X TMW04037 B7 (2000G) G B14 TMW04837 B3 (1987) B13 EB119 EB113 EB107 B1 (1987) TMW04937 TMW05037 MW3 MW7 B4/4B (1987) EB114 EB108 B2 (1987) EB102 EB109 MW9 MW4 EB115 TMW05337 EB EB103 MW17 MW05140 SB05036A MW8 EB122 EB116 SB05036C TMW05137 SB04836A SB05036B EB104 TMW04936 MW18 EB110 SB05036D MW04836 B8 (1987) EB123 EB111 SB05036F SB04836C B7 (1987) B5 (1987) EB117 SB04836B MW05139 SB05036E EB105 TMW05136 SB05036G B9 (1987) EB112 SB04836D EB124 B6 (1987) EB118 B12 SB05036H EB106 SB04836E MW05036 B15 B10 (1987) TMW X 586 SHALLOW GROUNDWATER ELEVATION FT. AMSL (NAVD 88) (NOVEMBER 1, 2015) SAMPLE LOCATION REPORTED DATA DURING THE RFI (NOVEMBER 1998 TO PRESENT) SAMPLE LOCATION NO REPORTED DATA DURING THE RFI (NOVEMBER 1998 TO PRESENT) LATERAL INCLUSION ZONE FOR VAPOR INTRUSION 100FT FROM PROPERTY BOUNDARY LOCATION SCREENED AGAINST MDEQ PART 201 RESIDENTIAL DRINKING WATER CRITERIA AND DISCUSSED IN THE GROUNDWATER EVALUATION LOCATIONS SCREENED AGAINST MDEQ PART 201 GROUNDWATER SURFACE WATER INTERFACE CRITERIA AND DISCUSSED IN THE GROUNDWATER EVALUATION LOCATIONS SCREENED AGAINST DRAFT MDEQ PART 201 VOLATILIZATION TO INDOOR AIR PATHWAY (TIER 1) AND DISCUSSED IN THE GROUNDWATER EVALUATION B8 (2000G) TMW04935 SB05036I TMW05135 MW'A' NOTE: MONITORING LOCATIONS WITH DATA COLLECTED DURING THE RFI (NOVEMBER TO PRESENT) BUT NOT HIGHLIGHTED ARE SCREENED IN THE TABLES BUT ARE NOT DISCUSSED IN THE GROUNDWATER EVALUATION SINCE EXCEEDANCES OF CRITERIA ARE BEING MANAGED WITH DEED RESTRICTIONS. B10 (2000G) SB04635A TMW05035 TMW04135 TMW04235B B9 (2000G) TMW04436 TMW04635 SB04635B B11 TMW04235A X MW04435 CTPHB2 CTPHB1 XX X X X 587 TMW04233 BB4B TMW04130 TMW XX X X X X X SB04335 SB04435A SB04434 SB04534D SB04434A MW04333 SB04334 SB04433A SB04333B SB04333A SB04433D SB04433C SB04332b MW04433 TMW04332 SB04435 SB04534A SB04535 MW04434 SB04432 LATERAL INCLUSION ZONE FOR VAPOR INTRUSION 100FT FROM PROPERTY BOUNDARY SB04634b SB04534E SB04534B MW04534 SB04433B SB04634 SB04534C SB04533A SB04533B SB04533D SB04533C TMW04531 TMW04528 TMW04632 FNDN TMW04630 MW04835 TMW04934 FNDN TMW05032 MW14831 MW04831 X X 588 CTPHB5 CTPHB3 X CTPHB4 XX X X X X C A F B D SAGINAW E RIVER CITY OF SAGINAW TOWNSHIP OF BUENA VISTA CROW ISLAND ROAD J H I KEY MAP SCALE VERIFICATION THIS BAR MEASURES 1" ON ORIGINAL. ADJUST SCALE ACCORDINGLY. G I 75 TMW04127 TMW TMW TMW04127R TMW X RACER NODULAR IRON INDUSTRIAL LAND SAGINAW, MICHIGAN XX X X INVESTIGATIVE UNIT G SOUTH GROUNDWATER EVALUATION X Source Reference: MICHIGAN STATE PLANE SOUTH, NAD 83 USING INTERNATIONAL FEET, NGVD 88 X Project Manager: Reviewed By: Date: MT JEP JULY 2018 Scale: 1" = 100' o Project N : Report N o: Drawing N o : 58502T09 MEMO032 figure T09(MEMO032)GNWA002 SEP 5, 2018

17 X X FIRST AVE. SIXTH STREET EIGHTH STREET WASHINGTON AVENUE NINTH STREET TENTH STREET SMCO PLANT FOURTEENTH STREET PARKING AREA FLOODED AREA FORMER NODULAR IRON PLANT AREA FNDN WASHINGTON AVENUE FNDN FLOODED AREA DIEKMANN ST. I 75 OUTER DRIVE ft MW04765 A 586 LEGEND INVESTIGATIVE UNIT BOUNDARY AND IDENTIFIER RACER PROPERTY SHALLOW GROUNDWATER ELEVATION FT. AMSL (NAVD 88) (NOVEMBER 1, 2015) SAMPLE LOCATION REPORTED DATA DURING THE RFI (NOVEMBER 1998 TO PRESENT) OFFSITE MONITORING WELL LOCATION MW SO30613/SO30713 SO30813 SO32513 X X X MW04757 SO30413 SO30513 SO32013 X H6 SO29813 SO32213 SO29613 SO29913 SO29713 B7 584 SO29413 SO29513 MW04456 MW XX MW X SO31813 B8 SO30013 SO30113 X SO30213 SO30313 XX X 587 MW05457 MW15457 X X X XX X X X XX TMW05457 MW05964 MW15964 SB2 LAGOON #5 MW06357 MW16357 X X X X X X SB4 X X MW3 MW10 LATERAL INCLUSION ZONE FOR VAPOR INTRUSION 100FT FROM PROPERTY BOUNDARY MW06656 SECONDARY POND X X X X X X MW17661 SB8 X X SB5 MW(SB)07661 X MW6 SAMPLE LOCATION NO REPORTED DATA DURING THE RFI (NOVEMBER 1998 TO PRESENT) LATERAL INCLUSION ZONE FOR VAPOR INTRUSION 100FT FROM PROPERTY BOUNDARY LOCATION SCREENED AGAINST MDEQ PART 201 RESIDENTIAL DRINKING WATER CRITERIA AND DISCUSSED IN THE GROUNDWATER EVALUATION LOCATIONS SCREENED AGAINST MDEQ PART 201 GROUNDWATER SURFACE WATER INTERFACE CRITERIA AND DISCUSSED IN THE GROUNDWATER EVALUATION LOCATIONS SCREENED AGAINST DRAFT MDEQ PART 201 VOLATILIZATION TO INDOOR AIR PATHWAY (TIER 1) AND DISCUSSED IN THE GROUNDWATER EVALUATION NOTE: MONITORING LOCATIONS WITH DATA COLLECTED DURING THE RFI (NOVEMBER TO PRESENT) BUT NOT HIGHLIGHTED ARE SCREENED IN THE TABLES BUT ARE NOT DISCUSSED IN THE GROUNDWATER EVALUATION SINCE EXCEEDANCES OF CRITERIA ARE BEING MANAGED WITH DEED RESTRICTIONS. SO29213 MW05157 TMW04356 SO32713 SB13 MW14 SB15 MW16 SO29013 SO29113 TMW06056A TMW MW04854 TMW05454 MW05452 TMW06051A CROW ISLAND ROAD MW MW05450 MW15450 TMW06051A H TMW06552 RIVER H J I MW TMW05447A SB23 SB22 C SAGINAW E G MW04250R 585 TMW05447 MW24 TMW06047 TMW06047B B A D F CITY OF SAGINAW TOWNSHIP OF BUENA VISTA 586 X X X X X KEY MAP MW MW25 MW05443 SB26 SCALE VERIFICATION THIS BAR MEASURES 1" ON ORIGINAL. ADJUST SCALE ACCORDINGLY. 587 SB05443 MW04040 SB05542 SB05742 RACER NODULAR IRON INDUSTRIAL LAND SB05741 SAGINAW, MICHIGAN SB05540 MW36 X X X X Source Reference: MICHIGAN STATE PLANE SOUTH, NAD 83 USING INTERNATIONAL FEET, NGVD 88 TOPO SANBORN, 1996 Project Manager: INVESTIGATIVE UNIT H GROUNDWATER EVALUATION Reviewed By: Date: 588 M.T. J.E.P. JULY 2018 Scale: 1" = 200' o Project N : Report N o: Drawing N o : 58502T09 MEMO032 figure T09(MEMO032)GNWA003 SEP 5, 2018

18 FIRST AVE. SIXTH STREET EIGHTH STREET WASHINGTON AVENUE NINTH STREET TENTH STREET SMCO PLANT FOURTEENTH STREET PARKING AREA FLOODED AREA FORMER NODULAR IRON PLANT AREA FNDN WASHINGTON AVENUE FNDN FLOODED AREA DIEKMANN ST. OUTER DRIVE SB08564 SB ft TMW TMW MW SB08161 A 586 LEGEND INVESTIGATIVE UNIT BOUNDARY AND IDENTIFIER RACER PROPERTY SHALLOW GROUNDWATER ELEVATION FT. AMSL (NAVD 88) (NOVEMBER 1, 2015) MONITORING WELL LOCATION REPORTED DATA DURING THE RFI (NOVEMBER 1998 TO PRESENT) SAMPLE LOCATION NO REPORTED DATA DURING THE RFI (NOVEMBER 1998 TO PRESENT) TMW07257 TMW07457 TMW07957 LATERAL INCLUSION ZONE FOR VAPOR INTRUSION 100FT FROM PROPERTY BOUNDARY 590 LOCATION SCREENED AGAINST MDEQ PART 201 RESIDENTIAL DRINKING WATER CRITERIA AND DISCUSSED IN THE GROUNDWATER EVALUATION 596 TMW07356 LOCATIONS SCREENED AGAINST DRAFT MDEQ PART 201 VOLATILIZATION TO INDOOR AIR PATHWAY (TIER 1) AND DISCUSSED IN THE GROUNDWATER EVALUATION 590 LATERAL INCLUSION ZONE FOR VAPOR INTRUSION 100FT FROM PROPERTY BOUNDARY 588 NOTE: MONITORING LOCATIONS WITH DATA COLLECTED DURING THE RFI (NOVEMBER TO PRESENT) BUT NOT HIGHLIGHTED ARE SCREENED IN THE TABLES BUT ARE NOT DISCUSSED IN THE GROUNDWATER EVALUATION SINCE EXCEEDANCES OF CRITERIA ARE BEING MANAGED WITH DEED RESTRICTIONS. TMW06652 SB06951A SB SB07151 MW06951 TMW06951 SB SB SB22 TMW TMW07048 SB SB MW SB02509 SB SB MW07245 SB CROW ISLAND ROAD SB6037 TMW SB MW8 FORMER NODULAR IRON QUENCH SLAG STAGING AREA TMW06243 TMW06243A SB06542 SB00905 MW7 594 SB00705 SB00805 SB01005 SB00605 MW06939 MW34 SB SB07043 SB01105 SB00305 SB00205 SB00105 SB00405 SB96939 MW96939 MW6 TMW6 622 SB01305 SB01505 SB01405 SB01605 SB SB SB07541 MW5S 614 TMW07937 B A C D SAGINAW E F RIVER G KEY MAP CITY OF SAGINAW TOWNSHIP OF BUENA VISTA H J I I 75 SCALE VERIFICATION THIS BAR MEASURES 1" ON ORIGINAL. ADJUST SCALE ACCORDINGLY. MW1S MW2S MW3 MW4S RACER NODULAR IRON INDUSTRIAL LAND SAGINAW, MICHIGAN SB38 SB39 MW40 SB41 MW42 INVESTIGATIVE UNIT I GROUNDWATER EVALUATION Source Reference: MICHIGAN STATE PLANE SOUTH, NAD 83 USING INTERNATIONAL FEET, NGVD 88 TOPO SANBORN, 1996 Project Manager: Reviewed By: Date: M.T. J.E.P. JULY 2018 Scale: 1" = 200' Project N o: Report N o: Drawing N o : 58502T09 MEMO032 figure T09(MEMO032)GNWA004 SEP 5, 2018

19 Table 1 Page 1 of 40 Portion of IU G Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 G G G G G G G G G G G G MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04333 M10004 M20217 H W CA123 M20522 MW04040 GW SSH14004 GW SSH1593 GW SSH1707 GW SSH17012 M /18/1998 8/2/ /19/2002 2/5/2004 2/5/2004 1/20/ /7/ /12/ /3/ /7/2016 5/17/2017 8/1/2000 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation VOAs a b c d e 1,1,1,2Tetrachloroethane UJ U 1,1,1Trichloroethane UJ U U U U 1,1,2,2Tetrachloroethane UJ U U U U 1,1,2Trichloroethane UJ U U U U 1,1Dichloroethane UJ U U U ,1Dichloroethene UJ U U U U 1,1Dichloropropene UJ U 1,2,3Trichlorobenzene U 1,2,3Trichloropropane U 1,2,4Trichlorobenzene U U 1,2,4Trimethylbenzene U 1,2Dibromo3chloropropane (DBCP) UJ U U 1,2Dibromoethane (Ethylene dibromide) UJ U U 1,2Dichlorobenzene UJ U U 1,2Dichloroethane UJ U U U U 1,2Dichloropropane UJ U U U U 1,3,5Trimethylbenzene U 1,3Dichlorobenzene UJ U U 1,3Dichloropropane UJ U 1,4Dichlorobenzene UJ U U 2,2Dichloropropane UJ U 2Butanone (Methyl ethyl ketone) (MEK) R R U U R 2Chloroethyl vinyl ether U 2Chlorotoluene U 2Hexanone UJ 0.02 U 0.05 U 0.05 U 0.02 U 2Phenylbutane (secbutylbenzene) U 4Chlorotoluene 4Methyl2pentanone (Methyl isobutyl ketone) (MIBK) R R 0.05 U 0.05 U R Acetone R R U U R Acetonitrile R Acrolein R U Acrylonitrile UJ U Allyl chloride UJ Benzene UJ U U U U Bromobenzene U Bromodichloromethane UJ U U U U Bromoform UJ U U U U Bromomethane (Methyl bromide) UJ U U U U Carbon disulfide UJ U U U U Carbon tetrachloride UJ U U U U Chlorobenzene UJ U U U U Chlorobromomethane UJ U Chloroethane UJ U U U U Chloroform (Trichloromethane) UJ U U U U Chloromethane (Methyl chloride) UJ U U U U Chloroprene 0.01 UJ cis1,2dichloroethene UJ U U U U cis1,3dichloropropene UJ U U U U cis1,4dichloro2butene 0.01 UJ Cyclohexane U Cymene (pisopropyltoluene) Dibromochloromethane UJ U U U U Dibromomethane UJ U Dichlorodifluoromethane (CFC12) UJ U U Ethyl methacrylate UJ Ethylbenzene UJ U U U U Hexachlorobutadiene Iodomethane UJ U Isopropyl benzene U U m&pxylenes UJ U U Methyl acetate 0.01 U Methyl acrylonitrile UJ Methyl cyclohexane U Methyl methacrylate UJ Methyl tert butyl ether (MTBE) U U Methylene chloride UJ U U U U Naphthalene UJ NButylbenzene U Memo32T1 T3 T5 6/7/2018

20 Table 1 Page 2 of 40 Portion of IU G Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 G G G G G G G G G G G G MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04333 M10004 M20217 H W CA123 M20522 MW04040 GW SSH14004 GW SSH1593 GW SSH1707 GW SSH17012 M /18/1998 8/2/ /19/2002 2/5/2004 2/5/2004 1/20/ /7/ /12/ /3/ /7/2016 5/17/2017 8/1/2000 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation NPropylbenzene U oxylene UJ U U Propionitrile (ethyl cyanide) R Styrene UJ U U U U tertbutylbenzene U Tetrachloroethene UJ U U U U Toluene UJ U U U U trans1,2dichloroethene UJ U U U U trans1,3dichloropropene UJ U U U U trans1,4dichloro2butene 0.01 UJ Trichloroethene UJ U U U U Trichlorofluoromethane (CFC11) UJ U U Trifluorotrichloroethane (CFC113) U Vinyl acetate UJ 0.05 U Vinyl chloride UJ U U U U Xylenes (total) U U SVOAs 0,0,0Triethylphosphorothioate 0.01 U 1,2,4,5Tetrachlorobenzene U 1,2,4Trichlorobenzene U 0.01 U U 0.01 U 1,2Dichlorobenzene U 0.01 U 1,2Diphenylhydrazine U 1,3,5Trinitrobenzene U 1,3Dichlorobenzene U 0.01 U 1,3Dinitrobenzene 0.01 U U 1,4Dichlorobenzene U 0.01 U 1,4Naphthoquinone 0.01 U 1Naphthylamine 0.01 U 2,2'Oxybis(1chloropropane) (bis(2chloroisopropyl) ether) 0.01 U 0.01 U U U 0.01 U 2,3,4,6Tetrachlorophenol 0.01 U 2,3Dichlorophenol U 2,3Dimethylphenol U 2,4,5Trichlorophenol U 0.01 U 0.05 U U 0.01 U 2,4,6Trichlorophenol U 0.01 U U U 0.01 U 2,4Dichlorophenol U 0.01 U U 0.01 U 0.01 U 2,4Dimethylphenol U 0.01 U U U 0.01 U 2,4Dinitrophenol U U 0.02 U 0.02 U U 2,4Dinitrotoluene U 0.01 U U U 0.01 U 2,6Dichlorophenol 0.01 U U 2,6Dimethylphenol U 2,6Dinitrotoluene 0.01 U 0.01 U U U 0.01 U 2Acetylaminofluorene 0.01 U 2Chloronaphthalene U 0.01 U U U 0.01 U 2Chlorophenol U 0.01 U U U 0.01 U 2Methylnaphthalene U 0.01 U U U 0.01 U 2Methylphenol U 0.01 U U U 0.01 U 2Naphthylamine 0.01 U 2Nitroaniline U U 0.02 U 0.02 U U 2Nitrophenol U 0.01 U U U 0.01 U 2Toluidine 0.01 U 3&4Methylphenol U 0.01 U U 0.01 U 3,3'Dichlorobenzidine U U 0.02 U U U 3,3Dimethylbenzidine U 3,4Dimethylphenol U 3,5Dimethylphenol U 3/4Chlorophenol U 3Methylcholanthrene 0.01 U 3Methylphenol Nitroaniline U U 0.02 U 0.02 U U 4,6Dinitro2methylphenol U U 0.02 U 0.02 U U 4Aminobiphenyl 0.01 U 4Bromophenyl phenyl ether 0.01 U 0.01 U U U 0.01 U 4Chloro3methylphenol U 0.01 U U U 0.01 U 4Chloroaniline 0.01 U 0.01 U 0.02 U 0.02 U 0.01 U 4Chlorophenyl phenyl ether 0.01 U 0.01 U U U 0.01 U 4Dimethylaminoazobenzene 0.01 U 4Methylphenol U 4Nitroaniline U U 0.02 U 0.02 U U Memo32T1 T3 T5 6/7/2018

21 Table 1 Page 3 of 40 Portion of IU G Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 G G G G G G G G G G G G MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04333 M10004 M20217 H W CA123 M20522 MW04040 GW SSH14004 GW SSH1593 GW SSH1707 GW SSH17012 M /18/1998 8/2/ /19/2002 2/5/2004 2/5/2004 1/20/ /7/ /12/ /3/ /7/2016 5/17/2017 8/1/2000 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation 4Nitrophenol U U 0.02 U 0.02 U U 5Nitro2toluidine 0.01 U 7,12Dimethylbenz(a)anthracene 0.01 U Acenaphthene U 0.01 U U U 0.01 U Acenaphthylene U 0.01 U U U 0.01 U Acetophenone U U Aniline U Anthracene U 0.01 U U U 0.01 U Atrazine U Benzaldehyde 0.01 U Benzidine U Benzo(a)anthracene U 0.01 U U U 0.01 U Benzo(a)pyrene U 0.01 U U U 0.01 U Benzo(b)fluoranthene U 0.01 U U U 0.01 U Benzo(g,h,i)perylene U 0.01 U U U 0.01 U Benzo(k)fluoranthene U 0.01 U U U 0.01 U Benzoic acid U Benzyl alcohol U U Biphenyl (1,1Biphenyl) 0.01 U bis(2chloroethoxy)ethane U bis(2chloroethoxy)methane 0.01 U 0.01 U U U 0.01 U bis(2chloroethyl)ether U 0.01 U U U 0.01 U bis(2ethylhexyl)adipate U bis(2ethylhexyl)phthalate (DEHP) U 0.01 U U U 0.01 U Butyl benzylphthalate (BBP) U 0.01 U U U 0.01 U Caprolactam U Carbazole U 0.01 U 0.01 U 0.01 U Chlorobenzilate 0.01 U Chrysene U 0.01 U U U 0.01 U Diallate 0.01 U Dibenz(a,h)anthracene U 0.01 U U U 0.01 U Dibenzofuran U 0.01 U U U 0.01 U Dicyclohexyl phthalate U Diethyl phthalate U 0.01 U U U 0.01 U Dimethoate 0.01 U Dimethyl phthalate U 0.01 U U U 0.01 U Dinbutylphthalate (DBP) U 0.01 U U U 0.01 U Dinoctyl phthalate (DnOP) U 0.01 U U U 0.01 U Dinoseb U Diphenylamine 0.01 U Disulfoton 0.01 U Ethyl methanesulfonate 0.01 U Ethyl parathion 0.01 U Famphur 0.01 U Fluoranthene U 0.01 U U U 0.01 U Fluorene U 0.01 U U U 0.01 U Hexachlorobenzene U 0.01 U U U 0.01 U Hexachlorobutadiene U 0.01 U U U 0.01 U Hexachlorocyclopentadiene U 0.01 U U U 0.01 U Hexachloroethane U 0.01 U U 0.01 U Hexachloropropene 0.01 U Indeno(1,2,3cd)pyrene U 0.01 U U U 0.01 U Isodrin 0.01 U Isophorone U 0.01 U U U 0.01 U Isosafrole 0.01 U Kepone 0.1 U Methapyrilene 0.1 U Methyl methanesulfonate 0.01 U Methyl parathion U Naphthalene U 0.01 U U U 0.01 U Nitrobenzene U 0.01 U U U 0.01 U NNitrosodiethylamine 0.01 U NNitrosodimethylamine U U NNitrosodinbutylamine 0.01 U NNitrosodinpropylamine U 0.01 U U U 0.01 U NNitrosodiphenylamine U 0.01 U U U 0.01 U NNitrosomethylethylamine 0.01 U NNitrosopiperidine 0.01 U NNitrosopyrrolidine 0.01 U Pentachlorobenzene U Memo32T1 T3 T5 6/7/2018

22 Table 1 Page 4 of 40 Portion of IU G Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 G G G G G G G G G G G G MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04333 M10004 M20217 H W CA123 M20522 MW04040 GW SSH14004 GW SSH1593 GW SSH1707 GW SSH17012 M /18/1998 8/2/ /19/2002 2/5/2004 2/5/2004 1/20/ /7/ /12/ /3/ /7/2016 5/17/2017 8/1/2000 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation Pentachloronitrobenzene U Pentachlorophenol (1) U U 0.02 U 0.02 U U Phenacetin 0.05 U Phenanthrene U 0.01 U U U 0.01 U Phenol U 0.01 U U U Phorate 0.01 U pphenylenediamine 0.01 U Pronamide 0.01 U Pyrene U 0.01 U U U 0.01 U Pyridine U Safrole 0.01 U Thionazin (O,OdiethylO2pyrazinyl phosphorothioate) U Metals Aluminum b 14.6 b 0.05 U U 0.05 U 39.8 J b Aluminum (dissolved) U 0.05 U U 0.05 U Antimony U 0.05 U U U 0.05 U 0.05 U Antimony (dissolved) U 0.05 U U 0.05 U Arsenic ab ab 0.01 U U J ab Arsenic (dissolved) U J U J Barium (1) U 0.10 U Barium (dissolved) (1) U Beryllium (1) U U U U U J Beryllium (dissolved) U U U U Cadmium (1) U J a U U U U Cadmium (dissolved) (1) U U U U Calcium Calcium (dissolved) Chromium b U U U b Chromium (dissolved) U U U 0.01 U Chromium III (trivalent) (1) U Chromium VI (hexavalent) U U 0.01 U Chromium VI (hexavalent) (dissolved) U Cobalt U 0.01 U U Cobalt (dissolved) U U Copper (1) a a U U 0.01 U a Copper (dissolved) (1) U 0.01 U U 0.01 U Cyanide (total) U Iron b 7.5 b 7.0 J b Iron (dissolved) J b 6.5 b Lead (1) ab ab U U U ab Lead (dissolved) (1) U J U U Magnesium Magnesium (dissolved) Manganese (1) ab 1.07 b 0.71 b 0.74 b b 2.83 ab Manganese (dissolved) (1) b 0.58 b 0.78 b b Mercury U U U Mercury (dissolved) U U Nickel (1) U U 0.02 U b Nickel (dissolved) (1) U 0.02 U U J Potassium 8.3 Potassium (dissolved) 8.7 Selenium UJ U U Selenium (dissolved) UJ U Silver U U R Silver (dissolved) U U Sodium J Sodium (dissolved) Thallium U U U Thallium (dissolved) U U Tin Tin (dissolved) 0.05 U Vanadium ab ab 0.02 U U 0.01 U ab Vanadium (dissolved) U J b U 0.01 U Zinc (1) U U 0.01 U Memo32T1 T3 T5 6/7/2018

23 Table 1 Page 5 of 40 Portion of IU G Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 G G G G G G G G G G G G MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04333 M10004 M20217 H W CA123 M20522 MW04040 GW SSH14004 GW SSH1593 GW SSH1707 GW SSH17012 M /18/1998 8/2/ /19/2002 2/5/2004 2/5/2004 1/20/ /7/ /12/ /3/ /7/2016 5/17/2017 8/1/2000 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation Zinc (dissolved) (1) U J U J PCBs Aroclor1016 (PCB1016) U U U U U Aroclor1221 (PCB1221) U U U U U Aroclor1232 (PCB1232) U U U U U Aroclor1242 (PCB1242) U U U U U Aroclor1248 (PCB1248) U U U U U Aroclor1254 (PCB1254) U U U U U Aroclor1260 (PCB1260) U U U U U Total PCBs U U U U U Petrl Prod Ethylene glycol U 25 U Propylene glycol U 25 U Wet Alkalinity, total (as CaCO3) Ammonia Ammonia, field AmmoniaN 0.38 Chloride Cyanide (amenable) 0.2 Cyanide (total) U 0.01 U U J Fluoride Formaldehyde U 0.05 U Nitrate (as N) U 0.10 U Nitrite (as N) U 0.10 U ph s.u ph, field s.u b ph, lab s.u J Sulfide 0.15 J Temperature, field Deg C 13.4 Total kjeldahl nitrogen (TKN) 4.7 Total organic carbon (TOC) Unionized ammonia FPARAM Conductivity, field umhos/cm Dissolved oxygen (DO), field Oxidation reduction potential (ORP) millivolts ph, field s.u Temperature, field Deg C Turbidity NTU Footnotes: U Not detected at the associated reporting limit. J Estimated concentration. UJ Not detected; associated reporting limit is estimated. R Rejected b Exceedance of Part 201 Generic Cleanup Criteria and s dated December 31, b Exceedance of screening levels in the latest round of groundwater data for a given location Downgradient sampling location included in the groundwater evaluation discussion not analyzed (1) The GSI criteria is dependent on the ph or hardness, or both, of the receiving surface water. The estimated ph for the Saginaw River is 8 and the estimated hardness for the Saginaw River is 275 mg CaCO3/L Memo32T1 T3 T5 6/7/2018

24 Table 1 Page 6 of 40 Portion of IU G Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 G G G G G G G G G G G G G G G G G MW04333 MW04333 MW04433 MW04433 MW04433 MW04434 MW04434 MW04434 MW04434 MW04435 MW04435 MW04435 MW04438 MW04438 MW04438 MW04534 MW04534 M20241Q M50544 M30220 H90128 M50545 M30032 M20228 M50013 M50543 M10217 M50542 MW04435 M20534 MW04438 GW SSH17011 M30219 M /1/2000 3/28/2005 8/1/ /19/2002 3/29/ /7/1998 7/24/2000 1/15/2002 3/28/2005 7/31/2000 3/28/ /7/2005 1/24/ /7/2005 5/17/2017 7/31/2000 1/17/2005 (Duplicate) Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation VOAs a b c d e 1,1,1,2Tetrachloroethane ,1,1Trichloroethane ,1,2,2Tetrachloroethane ,1,2Trichloroethane ,1Dichloroethane ,1Dichloroethene ,1Dichloropropene 1,2,3Trichlorobenzene 1,2,3Trichloropropane ,2,4Trichlorobenzene ,2,4Trimethylbenzene ,2Dibromo3chloropropane (DBCP) ,2Dibromoethane (Ethylene dibromide) ,2Dichlorobenzene ,2Dichloroethane ,2Dichloropropane ,3,5Trimethylbenzene ,3Dichlorobenzene ,3Dichloropropane 1,4Dichlorobenzene ,2Dichloropropane 2Butanone (Methyl ethyl ketone) (MEK) Chloroethyl vinyl ether Chlorotoluene Hexanone Phenylbutane (secbutylbenzene) Chlorotoluene 4Methyl2pentanone (Methyl isobutyl ketone) (MIBK) Acetone Acetonitrile Acrolein Acrylonitrile Allyl chloride Benzene Bromobenzene Bromodichloromethane Bromoform Bromomethane (Methyl bromide) Carbon disulfide Carbon tetrachloride Chlorobenzene Chlorobromomethane Chloroethane Chloroform (Trichloromethane) Chloromethane (Methyl chloride) Chloroprene cis1,2dichloroethene cis1,3dichloropropene cis1,4dichloro2butene Cyclohexane Cymene (pisopropyltoluene) Dibromochloromethane Dibromomethane Dichlorodifluoromethane (CFC12) Ethyl methacrylate Ethylbenzene Hexachlorobutadiene Iodomethane Isopropyl benzene m&pxylenes Methyl acetate Methyl acrylonitrile Methyl cyclohexane Methyl methacrylate Methyl tert butyl ether (MTBE) Methylene chloride Naphthalene NButylbenzene U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U J U U U U U U U U U U U U U U U U R R R R R R R R R 0.02 U 0.02 U 0.02 UJ 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U R R R R R R R R R R R R R J R R R R U R 0.02 UJ UJ U U U U U U U U U U U U U U U U U U U U U U U U U UJ U U U U J U U U U U U U U U U U UJ U U U U U U U U U U U U U U U U U U U U U U U U U U U U J U U U U 0.01 U U U U U U U U U U U U U U U 0.01 UJ U U U U U U U U U U UJ U U U U U U UJ U U J U U U UJ U U U U U U U U U U U Memo32T1 T3 T5 6/7/2018

25 Table 1 Page 7 of 40 Portion of IU G Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation NPropylbenzene 0.08 oxylene Propionitrile (ethyl cyanide) Styrene tertbutylbenzene 0.08 Tetrachloroethene Toluene trans1,2dichloroethene trans1,3dichloropropene trans1,4dichloro2butene Trichloroethene Trichlorofluoromethane (CFC11) Trifluorotrichloroethane (CFC113) Vinyl acetate Vinyl chloride Xylenes (total) G G G G G G G G G G G G G G G G G MW04333 MW04333 MW04433 MW04433 MW04433 MW04434 MW04434 MW04434 MW04434 MW04435 MW04435 MW04435 MW04438 MW04438 MW04438 MW04534 MW04534 M20241Q M50544 M30220 H90128 M50545 M30032 M20228 M50013 M50543 M10217 M50542 MW04435 M20534 MW04438 GW SSH17011 M30219 M /1/2000 3/28/2005 8/1/ /19/2002 3/29/ /7/1998 7/24/2000 1/15/2002 3/28/2005 7/31/2000 3/28/ /7/2005 1/24/ /7/2005 5/17/2017 7/31/2000 1/17/2005 (Duplicate) U U U U U R U U U U U U U U U U U U U U U U J U U J U U U U U U U U U U U U U U U U U U U U U 0.01 UJ U U U U U U U U U UJ U U U b b J b J b U U SVOAs 0,0,0Triethylphosphorothioate 1,2,4,5Tetrachlorobenzene ,2,4Trichlorobenzene ,2Dichlorobenzene ,2Diphenylhydrazine 1,3,5Trinitrobenzene 1,3Dichlorobenzene ,3Dinitrobenzene 1,4Dichlorobenzene ,4Naphthoquinone 1Naphthylamine 2,2'Oxybis(1chloropropane) (bis(2chloroisopropyl) ether) 2,3,4,6Tetrachlorophenol 2,3Dichlorophenol 2,3Dimethylphenol 2,4,5Trichlorophenol ,4,6Trichlorophenol ,4Dichlorophenol ,4Dimethylphenol ,4Dinitrophenol 2,4Dinitrotoluene ,6Dichlorophenol 2,6Dimethylphenol ,6Dinitrotoluene 2Acetylaminofluorene 2Chloronaphthalene Chlorophenol Methylnaphthalene Methylphenol Naphthylamine 2Nitroaniline 2Nitrophenol Toluidine 3&4Methylphenol ,3'Dichlorobenzidine ,3Dimethylbenzidine 3,4Dimethylphenol ,5Dimethylphenol 3/4Chlorophenol 3Methylcholanthrene 3Methylphenol Nitroaniline 4,6Dinitro2methylphenol Aminobiphenyl 4Bromophenyl phenyl ether 4Chloro3methylphenol Chloroaniline 4Chlorophenyl phenyl ether 4Dimethylaminoazobenzene 4Methylphenol Nitroaniline 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U J U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U U U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U U U U U U U U U 0.01 U U U U U U U U U U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U U U U U U U U Memo32T1 T3 T5 6/7/2018

26 Table 1 Page 8 of 40 Portion of IU G Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation 4Nitrophenol 5Nitro2toluidine 7,12Dimethylbenz(a)anthracene Acenaphthene Acenaphthylene Acetophenone Aniline Anthracene Atrazine Benzaldehyde Benzidine Benzo(a)anthracene Benzo(a)pyrene Benzo(b)fluoranthene Benzo(g,h,i)perylene Benzo(k)fluoranthene Benzoic acid Benzyl alcohol Biphenyl (1,1Biphenyl) bis(2chloroethoxy)ethane bis(2chloroethoxy)methane bis(2chloroethyl)ether bis(2ethylhexyl)adipate bis(2ethylhexyl)phthalate (DEHP) Butyl benzylphthalate (BBP) Caprolactam Carbazole Chlorobenzilate Chrysene Diallate Dibenz(a,h)anthracene Dibenzofuran Dicyclohexyl phthalate 4 Diethyl phthalate Dimethoate Dimethyl phthalate Dinbutylphthalate (DBP) Dinoctyl phthalate (DnOP) Dinoseb Diphenylamine Disulfoton Ethyl methanesulfonate Ethyl parathion Famphur Fluoranthene Fluorene Hexachlorobenzene Hexachlorobutadiene Hexachlorocyclopentadiene Hexachloroethane Hexachloropropene Indeno(1,2,3cd)pyrene Isodrin Isophorone Isosafrole Kepone Methapyrilene Methyl methanesulfonate Methyl parathion Naphthalene Nitrobenzene NNitrosodiethylamine NNitrosodimethylamine NNitrosodinbutylamine NNitrosodinpropylamine NNitrosodiphenylamine NNitrosomethylethylamine NNitrosopiperidine NNitrosopyrrolidine Pentachlorobenzene G G G G G G G G G G G G G G G G G MW04333 MW04333 MW04433 MW04433 MW04433 MW04434 MW04434 MW04434 MW04434 MW04435 MW04435 MW04435 MW04438 MW04438 MW04438 MW04534 MW04534 M20241Q M50544 M30220 H90128 M50545 M30032 M20228 M50013 M50543 M10217 M50542 MW04435 M20534 MW04438 GW SSH17011 M30219 M /1/2000 3/28/2005 8/1/ /19/2002 3/29/ /7/1998 7/24/2000 1/15/2002 3/28/2005 7/31/2000 3/28/ /7/2005 1/24/ /7/2005 5/17/2017 7/31/2000 1/17/2005 (Duplicate) U U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.1 UJ 0.1 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U J U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U Memo32T1 T3 T5 6/7/2018

27 Table 1 Page 9 of 40 Portion of IU G Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation Pentachloronitrobenzene Pentachlorophenol (1) Phenacetin Phenanthrene Phenol Phorate pphenylenediamine Pronamide Pyrene Pyridine Safrole Thionazin (O,OdiethylO2pyrazinyl phosphorothioate) G G G G G G G G G G G G G G G G G MW04333 MW04333 MW04433 MW04433 MW04433 MW04434 MW04434 MW04434 MW04434 MW04435 MW04435 MW04435 MW04438 MW04438 MW04438 MW04534 MW04534 M20241Q M50544 M30220 H90128 M50545 M30032 M20228 M50013 M50543 M10217 M50542 MW04435 M20534 MW04438 GW SSH17011 M30219 M /1/2000 3/28/2005 8/1/ /19/2002 3/29/ /7/1998 7/24/2000 1/15/2002 3/28/2005 7/31/2000 3/28/ /7/2005 1/24/ /7/2005 5/17/2017 7/31/2000 1/17/2005 (Duplicate) 0.05 U U U U U U U U 0.05 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U U 0.01 U U U R 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U Metals Aluminum 0.05 Aluminum (dissolved) 0.05 Antimony Antimony (dissolved) Arsenic Arsenic (dissolved) Barium (1) Barium (dissolved) (1) Beryllium (1) Beryllium (dissolved) Cadmium (1) Cadmium (dissolved) (1) Calcium Calcium (dissolved) Chromium 0.1 Chromium (dissolved) 0.1 Chromium III (trivalent) (1) Chromium VI (hexavalent) Chromium VI (hexavalent) (dissolved) Cobalt Cobalt (dissolved) Copper (1) Copper (dissolved) (1) Cyanide (total) Iron 0.3 Iron (dissolved) 0.3 Lead (1) Lead (dissolved) (1) Magnesium 400 Magnesium (dissolved) 400 Manganese (1) Manganese (dissolved) (1) Mercury Mercury (dissolved) Nickel (1) Nickel (dissolved) (1) Potassium Potassium (dissolved) Selenium Selenium (dissolved) Silver Silver (dissolved) Sodium 230 Sodium (dissolved) 230 Thallium Thallium (dissolved) Tin Tin (dissolved) Vanadium Vanadium (dissolved) Zinc (1) J b J b 8.59 J b J b 33.3 b 19.1 b J b 22.6 J b J 8.14 J b 0.05 U 0.05 U 0.05 U 0.05 U J 0.05 U 0.05 U 0.05 U J b 0.05 U 0.05 U 0.05 U 0.05 U J b 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U ab J ab ab ab ab U J ab J J J J U J J J J U J U U J U J U J U U U U U U U U U U U U U J U U U U U U U U U U 104 J b UJ UJ b J UJ b 0.01 UJ U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U J 0.01 U 0.01 U U 0.16 a J U a a J a 0.01 U a 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 95 J b ab J ab U ab ab U ab U ab U U J U U U U 2.98 ab b b b 1.45 J ab b b 2.32 ab b 1.36 ab 1.22 b b b b b b U U b 0.02 U J R U U U J 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U UJ UJ 0.01 U 0.01 U U U 0.05 U 0.05 U ab 0.01 UJ b 0.01 U ab ab 0.01 UJ ab 0.01 UJ b 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U J J J J J Memo32T1 T3 T5 6/7/2018

28 Table 1 Page 10 of 40 Portion of IU G Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 Surface Water Interface Zinc (dissolved) (1) Non GW Volatilization to Water Solubility Indoor Air Inhalation G G G G G G G G G G G G G G G G G MW04333 MW04333 MW04433 MW04433 MW04433 MW04434 MW04434 MW04434 MW04434 MW04435 MW04435 MW04435 MW04438 MW04438 MW04438 MW04534 MW04534 M20241Q M50544 M30220 H90128 M50545 M30032 M20228 M50013 M50543 M10217 M50542 MW04435 M20534 MW04438 GW SSH17011 M30219 M /1/2000 3/28/2005 8/1/ /19/2002 3/29/ /7/1998 7/24/2000 1/15/2002 3/28/2005 7/31/2000 3/28/ /7/2005 1/24/ /7/2005 5/17/2017 7/31/2000 1/17/2005 (Duplicate) J J 0.01 U 0.01 U J J PCBs Aroclor1016 (PCB1016) Aroclor1221 (PCB1221) Aroclor1232 (PCB1232) Aroclor1242 (PCB1242) Aroclor1248 (PCB1248) Aroclor1254 (PCB1254) Aroclor1260 (PCB1260) Total PCBs U U U U U U U U U U U U U U U U U U U U U U U a U U U U U U U U U U U U U U U U U U U U U U U U U ab U U U Petrl Prod Ethylene glycol Propylene glycol Wet Alkalinity, total (as CaCO3) Ammonia Ammonia, field AmmoniaN Chloride 250 Cyanide (amenable) 0.2 Cyanide (total) Fluoride Formaldehyde Nitrate (as N) 10 Nitrite (as N) 1 ph s.u ph, field s.u ph, lab s.u Sulfide Temperature, field Deg C Total kjeldahl nitrogen (TKN) Total organic carbon (TOC) Unionized ammonia U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.05 U 0.05 U 0.05 U 0.05 U b b 11.6 J b FPARAM Conductivity, field umhos/cm Dissolved oxygen (DO), field Oxidation reduction potential (ORP) millivolts ph, field s.u Temperature, field Deg C Turbidity NTU b b b Footnotes: U Not detected at the associated reporting limit. J Estimated concentration. UJ Not detected; associated reporting limit is estimated. R Rejected b Exceedance of Part 201 Generic Cleanup Criteria and s dated December 31, b Exceedance of screening levels in the latest round of groundwater data for a given location Downgradient sampling location included in the groundwater evaluation discussion not analyzed (1) The GSI criteria is dependent on the ph or hardness, or both, of the receiving surface water. The estimated ph for the Saginaw River is 8 and the estimated hardness for the Saginaw River is 275 mg CaCO3/L Memo32T1 T3 T5 6/7/2018

29 Table 1 Page 11 of 40 Portion of IU G Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 G G G G G G G G G G G G G G MW04831 MW04831 MW04831 MW04835 MW04835 MW04835 MW04835 MW04836 MW04836 MW04836 MW04836 MW04836 MW04836 MW04836 M30023 M20224 M20514 M60015 M90129 MW04835 GW SSH279 M10218 M60011 MW04836 MW04836 M20512 MW04836 GW SSH281 12/3/1998 7/26/2000 1/18/ /17/ /19/2002 1/29/ /13/2013 8/2/ /14/ /1/2002 1/29/2004 1/18/ /7/2005 7/16/2013 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation VOAs a b c d e 1,1,1,2Tetrachloroethane ,1,1Trichloroethane ,1,2,2Tetrachloroethane ,1,2Trichloroethane ,1Dichloroethane ,1Dichloroethene ,1Dichloropropene 1,2,3Trichlorobenzene 1,2,3Trichloropropane ,2,4Trichlorobenzene ,2,4Trimethylbenzene ,2Dibromo3chloropropane (DBCP) ,2Dibromoethane (Ethylene dibromide) ,2Dichlorobenzene ,2Dichloroethane ,2Dichloropropane ,3,5Trimethylbenzene ,3Dichlorobenzene ,3Dichloropropane 1,4Dichlorobenzene ,2Dichloropropane 2Butanone (Methyl ethyl ketone) (MEK) Chloroethyl vinyl ether Chlorotoluene Hexanone Phenylbutane (secbutylbenzene) Chlorotoluene 4Methyl2pentanone (Methyl isobutyl ketone) (MIBK) Acetone Acetonitrile Acrolein Acrylonitrile Allyl chloride Benzene Bromobenzene Bromodichloromethane Bromoform Bromomethane (Methyl bromide) Carbon disulfide Carbon tetrachloride Chlorobenzene Chlorobromomethane Chloroethane Chloroform (Trichloromethane) Chloromethane (Methyl chloride) Chloroprene cis1,2dichloroethene cis1,3dichloropropene cis1,4dichloro2butene Cyclohexane Cymene (pisopropyltoluene) Dibromochloromethane Dibromomethane Dichlorodifluoromethane (CFC12) Ethyl methacrylate Ethylbenzene Hexachlorobutadiene Iodomethane Isopropyl benzene m&pxylenes Methyl acetate Methyl acrylonitrile Methyl cyclohexane Methyl methacrylate Methyl tert butyl ether (MTBE) Methylene chloride Naphthalene NButylbenzene U U U U U U U U U U U U U U U U U U U U U UJ U U U U U U U U U U U U U U U R R R 0.02 U 0.02 U 0.02 U 0.02 U R R 0.02 U R R R R U R 0.02 UJ UJ U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U 0.01 U U U U U U U U U 0.01 UJ U U U U U UJ U U U U U U UJ U U U U U UJ U U U U U U Memo32T1 T3 T5 6/7/2018

30 Table 1 Page 12 of 40 Portion of IU G Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 G G G G G G G G G G G G G G MW04831 MW04831 MW04831 MW04835 MW04835 MW04835 MW04835 MW04836 MW04836 MW04836 MW04836 MW04836 MW04836 MW04836 M30023 M20224 M20514 M60015 M90129 MW04835 GW SSH279 M10218 M60011 MW04836 MW04836 M20512 MW04836 GW SSH281 12/3/1998 7/26/2000 1/18/ /17/ /19/2002 1/29/ /13/2013 8/2/ /14/ /1/2002 1/29/2004 1/18/ /7/2005 7/16/2013 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation NPropylbenzene 0.08 oxylene Propionitrile (ethyl cyanide) Styrene tertbutylbenzene 0.08 Tetrachloroethene Toluene trans1,2dichloroethene trans1,3dichloropropene trans1,4dichloro2butene Trichloroethene Trichlorofluoromethane (CFC11) Trifluorotrichloroethane (CFC113) Vinyl acetate Vinyl chloride Xylenes (total) U U U U U R U U U U U U U U U U U U U U U U U U U 0.01 U U U U U U U U U U U SVOAs 0,0,0Triethylphosphorothioate 1,2,4,5Tetrachlorobenzene ,2,4Trichlorobenzene ,2Dichlorobenzene ,2Diphenylhydrazine 1,3,5Trinitrobenzene 1,3Dichlorobenzene ,3Dinitrobenzene 1,4Dichlorobenzene ,4Naphthoquinone 1Naphthylamine 2,2'Oxybis(1chloropropane) (bis(2chloroisopropyl) ether) 2,3,4,6Tetrachlorophenol 2,3Dichlorophenol 2,3Dimethylphenol 2,4,5Trichlorophenol ,4,6Trichlorophenol ,4Dichlorophenol ,4Dimethylphenol ,4Dinitrophenol 2,4Dinitrotoluene ,6Dichlorophenol 2,6Dimethylphenol ,6Dinitrotoluene 2Acetylaminofluorene 2Chloronaphthalene Chlorophenol Methylnaphthalene Methylphenol Naphthylamine 2Nitroaniline 2Nitrophenol Toluidine 3&4Methylphenol ,3'Dichlorobenzidine ,3Dimethylbenzidine 3,4Dimethylphenol ,5Dimethylphenol 3/4Chlorophenol 3Methylcholanthrene 3Methylphenol Nitroaniline 4,6Dinitro2methylphenol Aminobiphenyl 4Bromophenyl phenyl ether 4Chloro3methylphenol Chloroaniline 4Chlorophenyl phenyl ether 4Dimethylaminoazobenzene 4Methylphenol Nitroaniline 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U U U 0.01 U U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U U 0.01 U 0.01 U U 0.01 U 0.01 U U U U U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U U 0.01 U 0.01 U U 0.01 U 0.01 U U 0.01 U U U U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U U U U 0.01 U U U U U U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U U 0.01 U 0.01 U U 0.01 U 0.01 U U 0.01 U U U U U Memo32T1 T3 T5 6/7/2018

31 Table 1 Page 13 of 40 Portion of IU G Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 G G G G G G G G G G G G G G MW04831 MW04831 MW04831 MW04835 MW04835 MW04835 MW04835 MW04836 MW04836 MW04836 MW04836 MW04836 MW04836 MW04836 M30023 M20224 M20514 M60015 M90129 MW04835 GW SSH279 M10218 M60011 MW04836 MW04836 M20512 MW04836 GW SSH281 12/3/1998 7/26/2000 1/18/ /17/ /19/2002 1/29/ /13/2013 8/2/ /14/ /1/2002 1/29/2004 1/18/ /7/2005 7/16/2013 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation 4Nitrophenol 5Nitro2toluidine 7,12Dimethylbenz(a)anthracene Acenaphthene Acenaphthylene Acetophenone Aniline Anthracene Atrazine Benzaldehyde Benzidine Benzo(a)anthracene Benzo(a)pyrene Benzo(b)fluoranthene Benzo(g,h,i)perylene Benzo(k)fluoranthene Benzoic acid Benzyl alcohol Biphenyl (1,1Biphenyl) bis(2chloroethoxy)ethane bis(2chloroethoxy)methane bis(2chloroethyl)ether bis(2ethylhexyl)adipate bis(2ethylhexyl)phthalate (DEHP) Butyl benzylphthalate (BBP) Caprolactam Carbazole Chlorobenzilate Chrysene Diallate Dibenz(a,h)anthracene Dibenzofuran Dicyclohexyl phthalate 4 Diethyl phthalate Dimethoate Dimethyl phthalate Dinbutylphthalate (DBP) Dinoctyl phthalate (DnOP) Dinoseb Diphenylamine Disulfoton Ethyl methanesulfonate Ethyl parathion Famphur Fluoranthene Fluorene Hexachlorobenzene Hexachlorobutadiene Hexachlorocyclopentadiene Hexachloroethane Hexachloropropene Indeno(1,2,3cd)pyrene Isodrin Isophorone Isosafrole Kepone Methapyrilene Methyl methanesulfonate Methyl parathion Naphthalene Nitrobenzene NNitrosodiethylamine NNitrosodimethylamine NNitrosodinbutylamine NNitrosodinpropylamine NNitrosodiphenylamine NNitrosomethylethylamine NNitrosopiperidine NNitrosopyrrolidine Pentachlorobenzene U U U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U U 0.01 U 0.01 U U 0.01 U 0.01 U U 0.01 U 0.01 U U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U U 0.01 U 0.01 U U 0.01 U 0.01 U U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U U 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U U 0.01 U 0.01 U U 0.01 U 0.01 U U 0.01 U 0.01 U U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.1 U 0.1 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U Memo32T1 T3 T5 6/7/2018

32 Table 1 Page 14 of 40 Portion of IU G Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 G G G G G G G G G G G G G G MW04831 MW04831 MW04831 MW04835 MW04835 MW04835 MW04835 MW04836 MW04836 MW04836 MW04836 MW04836 MW04836 MW04836 M30023 M20224 M20514 M60015 M90129 MW04835 GW SSH279 M10218 M60011 MW04836 MW04836 M20512 MW04836 GW SSH281 12/3/1998 7/26/2000 1/18/ /17/ /19/2002 1/29/ /13/2013 8/2/ /14/ /1/2002 1/29/2004 1/18/ /7/2005 7/16/2013 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation Pentachloronitrobenzene Pentachlorophenol (1) Phenacetin Phenanthrene Phenol Phorate pphenylenediamine Pronamide Pyrene Pyridine Safrole Thionazin (O,OdiethylO2pyrazinyl phosphorothioate) 0.05 U U U U 0.05 U 0.01 U 0.01 U U 0.01 U 0.01 U U 0.01 U 0.01 UJ 0.01 U 0.01 U 0.01 U U 0.01 U U Metals Aluminum 0.05 Aluminum (dissolved) 0.05 Antimony Antimony (dissolved) Arsenic Arsenic (dissolved) Barium (1) Barium (dissolved) (1) Beryllium (1) Beryllium (dissolved) Cadmium (1) Cadmium (dissolved) (1) Calcium Calcium (dissolved) Chromium 0.1 Chromium (dissolved) 0.1 Chromium III (trivalent) (1) Chromium VI (hexavalent) Chromium VI (hexavalent) (dissolved) Cobalt Cobalt (dissolved) Copper (1) Copper (dissolved) (1) Cyanide (total) Iron 0.3 Iron (dissolved) 0.3 Lead (1) Lead (dissolved) (1) Magnesium 400 Magnesium (dissolved) 400 Manganese (1) Manganese (dissolved) (1) Mercury Mercury (dissolved) Nickel (1) Nickel (dissolved) (1) Potassium Potassium (dissolved) Selenium Selenium (dissolved) Silver Silver (dissolved) Sodium 230 Sodium (dissolved) 230 Thallium Thallium (dissolved) Tin Tin (dissolved) Vanadium Vanadium (dissolved) Zinc (1) b 16 b 0.05 U b 108 J b 0.05 U 0.05 U 0.05 U J 0.05 U b 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U ab J J ab J U J J J J b J U U J b U U U U U U U U J U U U U U U b U U b U U 0.01 U U 0.01 U 0.01 U 0.01 U ab 0.01 U a a 0.01 U J a 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 311 b 3.31 J b ab ab J J ab U U U J 7.49 ab 1.22 b 0.54 b b 4.11 ab b b b b b a U 0.37 ab U 0.02 U ab 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U UJ UJ 0.01 U 0.01 U U U U ab ab 0.01 U 0.01 U ab 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U a J a J Memo32T1 T3 T5 6/7/2018

33 Table 1 Page 15 of 40 Portion of IU G Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 G G G G G G G G G G G G G G MW04831 MW04831 MW04831 MW04835 MW04835 MW04835 MW04835 MW04836 MW04836 MW04836 MW04836 MW04836 MW04836 MW04836 M30023 M20224 M20514 M60015 M90129 MW04835 GW SSH279 M10218 M60011 MW04836 MW04836 M20512 MW04836 GW SSH281 12/3/1998 7/26/2000 1/18/ /17/ /19/2002 1/29/ /13/2013 8/2/ /14/ /1/2002 1/29/2004 1/18/ /7/2005 7/16/2013 Surface Water Interface Zinc (dissolved) (1) Non GW Volatilization to Water Solubility Indoor Air Inhalation J J J PCBs Aroclor1016 (PCB1016) Aroclor1221 (PCB1221) Aroclor1232 (PCB1232) Aroclor1242 (PCB1242) Aroclor1248 (PCB1248) Aroclor1254 (PCB1254) Aroclor1260 (PCB1260) Total PCBs U U U U U U U U U U U U U U U U U U U U U U U U Petrl Prod Ethylene glycol Propylene glycol Wet Alkalinity, total (as CaCO3) Ammonia Ammonia, field AmmoniaN Chloride 250 Cyanide (amenable) 0.2 Cyanide (total) Fluoride Formaldehyde Nitrate (as N) 10 Nitrite (as N) 1 ph s.u ph, field s.u ph, lab s.u Sulfide Temperature, field Deg C Total kjeldahl nitrogen (TKN) Total organic carbon (TOC) Unionized ammonia b 0.01 U 0.01 U 0.01 U U 0.05 U 7.20 J FPARAM Conductivity, field umhos/cm Dissolved oxygen (DO), field Oxidation reduction potential (ORP) millivolts ph, field s.u Temperature, field Deg C Turbidity NTU b Footnotes: U Not detected at the associated reporting limit. J Estimated concentration. UJ Not detected; associated reporting limit is estimated. R Rejected b Exceedance of Part 201 Generic Cleanup Criteria and s dated December 31, b Exceedance of screening levels in the latest round of groundwater data for a given location Downgradient sampling location included in the groundwater evaluation discussion not analyzed (1) The GSI criteria is dependent on the ph or hardness, or both, of the receiving surface water. The estimated ph for the Saginaw River is 8 and the estimated hardness for the Saginaw River is 275 mg CaCO3/L Memo32T1 T3 T5 6/7/2018

34 Table 1 Page 16 of 40 Portion of IU G Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 G G G G G G G G G G MW04836 MW04836 MW04836 MW04836 MW04836 MW04836 MW05036 MW05036 MW05036 MW05036 GW SSH280 GW SSH14003 GW SSH1594 GW SSH1708 GW SSH17009 GW SSH17010 M30024 M10208 M60010 MW /13/ /12/ /3/ /7/2016 5/17/2017 5/17/ /3/1998 8/2/ /14/2001 1/29/2004 (Duplicate) Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation VOAs a b c d e 1,1,1,2Tetrachloroethane ,1,1Trichloroethane ,1,2,2Tetrachloroethane ,1,2Trichloroethane ,1Dichloroethane ,1Dichloroethene ,1Dichloropropene 1,2,3Trichlorobenzene 1,2,3Trichloropropane ,2,4Trichlorobenzene ,2,4Trimethylbenzene ,2Dibromo3chloropropane (DBCP) ,2Dibromoethane (Ethylene dibromide) ,2Dichlorobenzene ,2Dichloroethane ,2Dichloropropane ,3,5Trimethylbenzene ,3Dichlorobenzene ,3Dichloropropane 1,4Dichlorobenzene ,2Dichloropropane 2Butanone (Methyl ethyl ketone) (MEK) Chloroethyl vinyl ether Chlorotoluene Hexanone Phenylbutane (secbutylbenzene) Chlorotoluene 4Methyl2pentanone (Methyl isobutyl ketone) (MIBK) Acetone Acetonitrile Acrolein Acrylonitrile Allyl chloride Benzene Bromobenzene Bromodichloromethane Bromoform Bromomethane (Methyl bromide) Carbon disulfide Carbon tetrachloride Chlorobenzene Chlorobromomethane Chloroethane Chloroform (Trichloromethane) Chloromethane (Methyl chloride) Chloroprene cis1,2dichloroethene cis1,3dichloropropene cis1,4dichloro2butene Cyclohexane Cymene (pisopropyltoluene) Dibromochloromethane Dibromomethane Dichlorodifluoromethane (CFC12) Ethyl methacrylate Ethylbenzene Hexachlorobutadiene Iodomethane Isopropyl benzene m&pxylenes Methyl acetate Methyl acrylonitrile Methyl cyclohexane Methyl methacrylate Methyl tert butyl ether (MTBE) Methylene chloride Naphthalene NButylbenzene U U U U U U U U U U U UJ U U U U U U U U U U U R 0.02 U 0.02 U 0.02 U R 0.02 U R R U R 0.02 UJ UJ U U U U U U U U U U U U U U U U U U U U U U 0.01 U U U U U 0.01 UJ U U U UJ U U U U UJ U U U UJ U U U U Memo32T1 T3 T5 6/7/2018

35 Table 1 Page 17 of 40 Portion of IU G Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation NPropylbenzene 0.08 oxylene Propionitrile (ethyl cyanide) Styrene tertbutylbenzene 0.08 Tetrachloroethene Toluene trans1,2dichloroethene trans1,3dichloropropene trans1,4dichloro2butene Trichloroethene Trichlorofluoromethane (CFC11) Trifluorotrichloroethane (CFC113) Vinyl acetate Vinyl chloride Xylenes (total) G G G G G G G G G G MW04836 MW04836 MW04836 MW04836 MW04836 MW04836 MW05036 MW05036 MW05036 MW05036 GW SSH280 GW SSH14003 GW SSH1594 GW SSH1708 GW SSH17009 GW SSH17010 M30024 M10208 M60010 MW /13/ /12/ /3/ /7/2016 5/17/2017 5/17/ /3/1998 8/2/ /14/2001 1/29/2004 (Duplicate) U U U R U U U U U U U U U U 0.01 U U U U U U U SVOAs 0,0,0Triethylphosphorothioate 1,2,4,5Tetrachlorobenzene ,2,4Trichlorobenzene ,2Dichlorobenzene ,2Diphenylhydrazine 1,3,5Trinitrobenzene 1,3Dichlorobenzene ,3Dinitrobenzene 1,4Dichlorobenzene ,4Naphthoquinone 1Naphthylamine 2,2'Oxybis(1chloropropane) (bis(2chloroisopropyl) ether) 2,3,4,6Tetrachlorophenol 2,3Dichlorophenol 2,3Dimethylphenol 2,4,5Trichlorophenol ,4,6Trichlorophenol ,4Dichlorophenol ,4Dimethylphenol ,4Dinitrophenol 2,4Dinitrotoluene ,6Dichlorophenol 2,6Dimethylphenol ,6Dinitrotoluene 2Acetylaminofluorene 2Chloronaphthalene Chlorophenol Methylnaphthalene Methylphenol Naphthylamine 2Nitroaniline 2Nitrophenol Toluidine 3&4Methylphenol ,3'Dichlorobenzidine ,3Dimethylbenzidine 3,4Dimethylphenol ,5Dimethylphenol 3/4Chlorophenol 3Methylcholanthrene 3Methylphenol Nitroaniline 4,6Dinitro2methylphenol Aminobiphenyl 4Bromophenyl phenyl ether 4Chloro3methylphenol Chloroaniline 4Chlorophenyl phenyl ether 4Dimethylaminoazobenzene 4Methylphenol Nitroaniline 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U U U U 0.01 U U U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U U Memo32T1 T3 T5 6/7/2018

36 Table 1 Page 18 of 40 Portion of IU G Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation 4Nitrophenol 5Nitro2toluidine 7,12Dimethylbenz(a)anthracene Acenaphthene Acenaphthylene Acetophenone Aniline Anthracene Atrazine Benzaldehyde Benzidine Benzo(a)anthracene Benzo(a)pyrene Benzo(b)fluoranthene Benzo(g,h,i)perylene Benzo(k)fluoranthene Benzoic acid Benzyl alcohol Biphenyl (1,1Biphenyl) bis(2chloroethoxy)ethane bis(2chloroethoxy)methane bis(2chloroethyl)ether bis(2ethylhexyl)adipate bis(2ethylhexyl)phthalate (DEHP) Butyl benzylphthalate (BBP) Caprolactam Carbazole Chlorobenzilate Chrysene Diallate Dibenz(a,h)anthracene Dibenzofuran Dicyclohexyl phthalate 4 Diethyl phthalate Dimethoate Dimethyl phthalate Dinbutylphthalate (DBP) Dinoctyl phthalate (DnOP) Dinoseb Diphenylamine Disulfoton Ethyl methanesulfonate Ethyl parathion Famphur Fluoranthene Fluorene Hexachlorobenzene Hexachlorobutadiene Hexachlorocyclopentadiene Hexachloroethane Hexachloropropene Indeno(1,2,3cd)pyrene Isodrin Isophorone Isosafrole Kepone Methapyrilene Methyl methanesulfonate Methyl parathion Naphthalene Nitrobenzene NNitrosodiethylamine NNitrosodimethylamine NNitrosodinbutylamine NNitrosodinpropylamine NNitrosodiphenylamine NNitrosomethylethylamine NNitrosopiperidine NNitrosopyrrolidine Pentachlorobenzene G G G G G G G G G G MW04836 MW04836 MW04836 MW04836 MW04836 MW04836 MW05036 MW05036 MW05036 MW05036 GW SSH280 GW SSH14003 GW SSH1594 GW SSH1708 GW SSH17009 GW SSH17010 M30024 M10208 M60010 MW /13/ /12/ /3/ /7/2016 5/17/2017 5/17/ /3/1998 8/2/ /14/2001 1/29/2004 (Duplicate) U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 UJ 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.1 U 0.1 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U Memo32T1 T3 T5 6/7/2018

37 Table 1 Page 19 of 40 Portion of IU G Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation Pentachloronitrobenzene Pentachlorophenol (1) Phenacetin Phenanthrene Phenol Phorate pphenylenediamine Pronamide Pyrene Pyridine Safrole Thionazin (O,OdiethylO2pyrazinyl phosphorothioate) G G G G G G G G G G MW04836 MW04836 MW04836 MW04836 MW04836 MW04836 MW05036 MW05036 MW05036 MW05036 GW SSH280 GW SSH14003 GW SSH1594 GW SSH1708 GW SSH17009 GW SSH17010 M30024 M10208 M60010 MW /13/ /12/ /3/ /7/2016 5/17/2017 5/17/ /3/1998 8/2/ /14/2001 1/29/2004 (Duplicate) 0.05 U U U 0.05 U 0.01 U 0.01 U 0.01 U U 0.01 UJ 0.01 U 0.01 U 0.01 U 0.01 U U Metals Aluminum 0.05 Aluminum (dissolved) 0.05 Antimony Antimony (dissolved) Arsenic Arsenic (dissolved) Barium (1) Barium (dissolved) (1) Beryllium (1) Beryllium (dissolved) Cadmium (1) Cadmium (dissolved) (1) Calcium Calcium (dissolved) Chromium 0.1 Chromium (dissolved) 0.1 Chromium III (trivalent) (1) Chromium VI (hexavalent) Chromium VI (hexavalent) (dissolved) Cobalt Cobalt (dissolved) Copper (1) Copper (dissolved) (1) Cyanide (total) Iron 0.3 Iron (dissolved) 0.3 Lead (1) Lead (dissolved) (1) Magnesium 400 Magnesium (dissolved) 400 Manganese (1) Manganese (dissolved) (1) Mercury Mercury (dissolved) Nickel (1) Nickel (dissolved) (1) Potassium Potassium (dissolved) Selenium Selenium (dissolved) Silver Silver (dissolved) Sodium 230 Sodium (dissolved) 230 Thallium Thallium (dissolved) Tin Tin (dissolved) Vanadium Vanadium (dissolved) Zinc (1) b b 0.05 U b 0.05 U 0.05 U 0.05 U 0.05 U ab ab U U U U U U U U U U U U 0.01 U U a J 0.01 U 0.01 U 45.3 b 11.4 J b ab U U U 1.59 ab b U U U 0.02 U 0.02 U UJ U 0.01 U 0.01 U U U 0.05 U 0.05 U ab J b 0.01 U J b a Memo32T1 T3 T5 6/7/2018

38 Table 1 Page 20 of 40 Portion of IU G Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 Surface Water Interface Zinc (dissolved) (1) Non GW Volatilization to Water Solubility Indoor Air Inhalation G G G G G G G G G G MW04836 MW04836 MW04836 MW04836 MW04836 MW04836 MW05036 MW05036 MW05036 MW05036 GW SSH280 GW SSH14003 GW SSH1594 GW SSH1708 GW SSH17009 GW SSH17010 M30024 M10208 M60010 MW /13/ /12/ /3/ /7/2016 5/17/2017 5/17/ /3/1998 8/2/ /14/2001 1/29/2004 (Duplicate) 0.01 U J PCBs Aroclor1016 (PCB1016) Aroclor1221 (PCB1221) Aroclor1232 (PCB1232) Aroclor1242 (PCB1242) Aroclor1248 (PCB1248) Aroclor1254 (PCB1254) Aroclor1260 (PCB1260) Total PCBs U U U U U U U U U U U U U U U U Petrl Prod Ethylene glycol Propylene glycol Wet Alkalinity, total (as CaCO3) Ammonia Ammonia, field AmmoniaN Chloride 250 Cyanide (amenable) 0.2 Cyanide (total) Fluoride Formaldehyde Nitrate (as N) 10 Nitrite (as N) 1 ph s.u ph, field s.u ph, lab s.u Sulfide Temperature, field Deg C Total kjeldahl nitrogen (TKN) Total organic carbon (TOC) Unionized ammonia 35 ab 33 ab 51 ab 18 ab U J U J 7.39 J 6.82 J 7.4 J 7.3 J FPARAM Conductivity, field umhos/cm Dissolved oxygen (DO), field Oxidation reduction potential (ORP) millivolts ph, field s.u Temperature, field Deg C Turbidity NTU b 9.35 b b Footnotes: U Not detected at the associated reporting limit. J Estimated concentration. UJ Not detected; associated reporting limit is estimated. R Rejected b Exceedance of Part 201 Generic Cleanup Criteria and s dated December 31, b Exceedance of screening levels in the latest round of groundwater data for a given location Downgradient sampling location included in the groundwater evaluation discussion not analyzed (1) The GSI criteria is dependent on the ph or hardness, or both, of the receiving surface water. The estimated ph for the Saginaw River is 8 and the estimated hardness for the Saginaw River is 275 mg CaCO3/L Memo32T1 T3 T5 6/7/2018

39 Table 1 Page 21 of 40 Portion of IU G Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 G G G G G G G G G G G MW05036 MW05036 MW05036 MW05036 MW05036 MW05036 MW05036 MW05036 MW14831 MW14831 MW14831 M20511 MW05036 MW05036~7/16/2013 GW SSH281 GW SSH14002 GW SSH1595 GW SSH1709 GW SSH17008 M10032 M20234 M20235Q 1/18/ /7/2005 7/16/ /13/ /12/ /3/ /7/2016 5/17/ /2/1998 7/28/2000 7/28/2000 (Duplicate) Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation VOAs a b c d e 1,1,1,2Tetrachloroethane ,1,1Trichloroethane ,1,2,2Tetrachloroethane ,1,2Trichloroethane ,1Dichloroethane ,1Dichloroethene ,1Dichloropropene 1,2,3Trichlorobenzene 1,2,3Trichloropropane ,2,4Trichlorobenzene ,2,4Trimethylbenzene ,2Dibromo3chloropropane (DBCP) ,2Dibromoethane (Ethylene dibromide) ,2Dichlorobenzene ,2Dichloroethane ,2Dichloropropane ,3,5Trimethylbenzene ,3Dichlorobenzene ,3Dichloropropane 1,4Dichlorobenzene ,2Dichloropropane 2Butanone (Methyl ethyl ketone) (MEK) Chloroethyl vinyl ether Chlorotoluene Hexanone Phenylbutane (secbutylbenzene) Chlorotoluene 4Methyl2pentanone (Methyl isobutyl ketone) (MIBK) Acetone Acetonitrile Acrolein Acrylonitrile Allyl chloride Benzene Bromobenzene Bromodichloromethane Bromoform Bromomethane (Methyl bromide) Carbon disulfide Carbon tetrachloride Chlorobenzene Chlorobromomethane Chloroethane Chloroform (Trichloromethane) Chloromethane (Methyl chloride) Chloroprene cis1,2dichloroethene cis1,3dichloropropene cis1,4dichloro2butene Cyclohexane Cymene (pisopropyltoluene) Dibromochloromethane Dibromomethane Dichlorodifluoromethane (CFC12) Ethyl methacrylate Ethylbenzene Hexachlorobutadiene Iodomethane Isopropyl benzene m&pxylenes Methyl acetate Methyl acrylonitrile Methyl cyclohexane Methyl methacrylate Methyl tert butyl ether (MTBE) Methylene chloride Naphthalene NButylbenzene U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U R R R 0.02 U 0.02 U 0.02 U R R R R R R U R 0.02 U U U U U U U U U U U U U U UJ U U U U U U U U U U U U U U U U U U 0.01 U U U U U U U 0.01 UJ U U U U UJ U U U U U U U U U U U U U U Memo32T1 T3 T5 6/7/2018

40 Table 1 Page 22 of 40 Portion of IU G Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation NPropylbenzene 0.08 oxylene Propionitrile (ethyl cyanide) Styrene tertbutylbenzene 0.08 Tetrachloroethene Toluene trans1,2dichloroethene trans1,3dichloropropene trans1,4dichloro2butene Trichloroethene Trichlorofluoromethane (CFC11) Trifluorotrichloroethane (CFC113) Vinyl acetate Vinyl chloride Xylenes (total) G G G G G G G G G G G MW05036 MW05036 MW05036 MW05036 MW05036 MW05036 MW05036 MW05036 MW14831 MW14831 MW14831 M20511 MW05036 MW05036~7/16/2013 GW SSH281 GW SSH14002 GW SSH1595 GW SSH1709 GW SSH17008 M10032 M20234 M20235Q 1/18/ /7/2005 7/16/ /13/ /12/ /3/ /7/2016 5/17/ /2/1998 7/28/2000 7/28/2000 (Duplicate) U U U R U U U U U U U U U U U U U U U 0.01 U U U U U U U U U SVOAs 0,0,0Triethylphosphorothioate 1,2,4,5Tetrachlorobenzene ,2,4Trichlorobenzene ,2Dichlorobenzene ,2Diphenylhydrazine 1,3,5Trinitrobenzene 1,3Dichlorobenzene ,3Dinitrobenzene 1,4Dichlorobenzene ,4Naphthoquinone 1Naphthylamine 2,2'Oxybis(1chloropropane) (bis(2chloroisopropyl) ether) 2,3,4,6Tetrachlorophenol 2,3Dichlorophenol 2,3Dimethylphenol 2,4,5Trichlorophenol ,4,6Trichlorophenol ,4Dichlorophenol ,4Dimethylphenol ,4Dinitrophenol 2,4Dinitrotoluene ,6Dichlorophenol 2,6Dimethylphenol ,6Dinitrotoluene 2Acetylaminofluorene 2Chloronaphthalene Chlorophenol Methylnaphthalene Methylphenol Naphthylamine 2Nitroaniline 2Nitrophenol Toluidine 3&4Methylphenol ,3'Dichlorobenzidine ,3Dimethylbenzidine 3,4Dimethylphenol ,5Dimethylphenol 3/4Chlorophenol 3Methylcholanthrene 3Methylphenol Nitroaniline 4,6Dinitro2methylphenol Aminobiphenyl 4Bromophenyl phenyl ether 4Chloro3methylphenol Chloroaniline 4Chlorophenyl phenyl ether 4Dimethylaminoazobenzene 4Methylphenol Nitroaniline 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U U U U 0.01 U U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U U U Memo32T1 T3 T5 6/7/2018

41 Table 1 Page 23 of 40 Portion of IU G Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation 4Nitrophenol 5Nitro2toluidine 7,12Dimethylbenz(a)anthracene Acenaphthene Acenaphthylene Acetophenone Aniline Anthracene Atrazine Benzaldehyde Benzidine Benzo(a)anthracene Benzo(a)pyrene Benzo(b)fluoranthene Benzo(g,h,i)perylene Benzo(k)fluoranthene Benzoic acid Benzyl alcohol Biphenyl (1,1Biphenyl) bis(2chloroethoxy)ethane bis(2chloroethoxy)methane bis(2chloroethyl)ether bis(2ethylhexyl)adipate bis(2ethylhexyl)phthalate (DEHP) Butyl benzylphthalate (BBP) Caprolactam Carbazole Chlorobenzilate Chrysene Diallate Dibenz(a,h)anthracene Dibenzofuran Dicyclohexyl phthalate 4 Diethyl phthalate Dimethoate Dimethyl phthalate Dinbutylphthalate (DBP) Dinoctyl phthalate (DnOP) Dinoseb Diphenylamine Disulfoton Ethyl methanesulfonate Ethyl parathion Famphur Fluoranthene Fluorene Hexachlorobenzene Hexachlorobutadiene Hexachlorocyclopentadiene Hexachloroethane Hexachloropropene Indeno(1,2,3cd)pyrene Isodrin Isophorone Isosafrole Kepone Methapyrilene Methyl methanesulfonate Methyl parathion Naphthalene Nitrobenzene NNitrosodiethylamine NNitrosodimethylamine NNitrosodinbutylamine NNitrosodinpropylamine NNitrosodiphenylamine NNitrosomethylethylamine NNitrosopiperidine NNitrosopyrrolidine Pentachlorobenzene G G G G G G G G G G G MW05036 MW05036 MW05036 MW05036 MW05036 MW05036 MW05036 MW05036 MW14831 MW14831 MW14831 M20511 MW05036 MW05036~7/16/2013 GW SSH281 GW SSH14002 GW SSH1595 GW SSH1709 GW SSH17008 M10032 M20234 M20235Q 1/18/ /7/2005 7/16/ /13/ /12/ /3/ /7/2016 5/17/ /2/1998 7/28/2000 7/28/2000 (Duplicate) U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.1 U 0.1 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U Memo32T1 T3 T5 6/7/2018

42 Table 1 Page 24 of 40 Portion of IU G Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation Pentachloronitrobenzene Pentachlorophenol (1) Phenacetin Phenanthrene Phenol Phorate pphenylenediamine Pronamide Pyrene Pyridine Safrole Thionazin (O,OdiethylO2pyrazinyl phosphorothioate) G G G G G G G G G G G MW05036 MW05036 MW05036 MW05036 MW05036 MW05036 MW05036 MW05036 MW14831 MW14831 MW14831 M20511 MW05036 MW05036~7/16/2013 GW SSH281 GW SSH14002 GW SSH1595 GW SSH1709 GW SSH17008 M10032 M20234 M20235Q 1/18/ /7/2005 7/16/ /13/ /12/ /3/ /7/2016 5/17/ /2/1998 7/28/2000 7/28/2000 (Duplicate) 0.05 U U U U 0.05 U 0.01 U 0.01 U 0.01 U 0.01 U J 0.01 U 0.01 U 0.01 UJ 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U Metals Aluminum 0.05 Aluminum (dissolved) 0.05 Antimony Antimony (dissolved) Arsenic Arsenic (dissolved) Barium (1) Barium (dissolved) (1) Beryllium (1) Beryllium (dissolved) Cadmium (1) Cadmium (dissolved) (1) Calcium Calcium (dissolved) Chromium 0.1 Chromium (dissolved) 0.1 Chromium III (trivalent) (1) Chromium VI (hexavalent) Chromium VI (hexavalent) (dissolved) Cobalt Cobalt (dissolved) Copper (1) Copper (dissolved) (1) Cyanide (total) Iron 0.3 Iron (dissolved) 0.3 Lead (1) Lead (dissolved) (1) Magnesium 400 Magnesium (dissolved) 400 Manganese (1) Manganese (dissolved) (1) Mercury Mercury (dissolved) Nickel (1) Nickel (dissolved) (1) Potassium Potassium (dissolved) Selenium Selenium (dissolved) Silver Silver (dissolved) Sodium 230 Sodium (dissolved) 230 Thallium Thallium (dissolved) Tin Tin (dissolved) Vanadium Vanadium (dissolved) Zinc (1) U b b 1.16 b 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U ab ab ab ab J J J J J U U U U U U U U U U U U U U U U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 2.1 b J U U U U U U J b J b 0.14 J b b J b J b U U 0.02 U 0.02 U b b 0.02 U b b UJ UJ 0.01 U 0.01 U U U 0.05 U 0.05 U 0.01 U 0.01 U J b J b 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U J J Memo32T1 T3 T5 6/7/2018

43 Table 1 Page 25 of 40 Portion of IU G Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 Surface Water Interface Zinc (dissolved) (1) Non GW Volatilization to Water Solubility Indoor Air Inhalation G G G G G G G G G G G MW05036 MW05036 MW05036 MW05036 MW05036 MW05036 MW05036 MW05036 MW14831 MW14831 MW14831 M20511 MW05036 MW05036~7/16/2013 GW SSH281 GW SSH14002 GW SSH1595 GW SSH1709 GW SSH17008 M10032 M20234 M20235Q 1/18/ /7/2005 7/16/ /13/ /12/ /3/ /7/2016 5/17/ /2/1998 7/28/2000 7/28/2000 (Duplicate) 0.01 U J J PCBs Aroclor1016 (PCB1016) Aroclor1221 (PCB1221) Aroclor1232 (PCB1232) Aroclor1242 (PCB1242) Aroclor1248 (PCB1248) Aroclor1254 (PCB1254) Aroclor1260 (PCB1260) Total PCBs U U U U U U U U U U U U U U U U U U U U U U U U Petrl Prod Ethylene glycol Propylene glycol Wet Alkalinity, total (as CaCO3) Ammonia Ammonia, field AmmoniaN Chloride 250 Cyanide (amenable) 0.2 Cyanide (total) Fluoride Formaldehyde Nitrate (as N) 10 Nitrite (as N) 1 ph s.u ph, field s.u ph, lab s.u Sulfide Temperature, field Deg C Total kjeldahl nitrogen (TKN) Total organic carbon (TOC) Unionized ammonia b U 0.01 U 0.01 U 0.05 U 0.05 U b b 11.4 J b 11.2 J b 10.8 J b 11.2 J b 11.1 J b 0.05 U FPARAM Conductivity, field umhos/cm Dissolved oxygen (DO), field Oxidation reduction potential (ORP) millivolts ph, field s.u Temperature, field Deg C Turbidity NTU b 9.49 b b b Footnotes: U Not detected at the associated reporting limit. J Estimated concentration. UJ Not detected; associated reporting limit is estimated. R Rejected b Exceedance of Part 201 Generic Cleanup Criteria and s dated December 31, b Exceedance of screening levels in the latest round of groundwater data for a given location Downgradient sampling location included in the groundwater evaluation discussion not analyzed (1) The GSI criteria is dependent on the ph or hardness, or both, of the receiving surface water. The estimated ph for the Saginaw River is 8 and the estimated hardness for the Saginaw River is 275 mg CaCO3/L Memo32T1 T3 T5 6/7/2018

44 Table 1 Page 26 of 40 Portion of IU G Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 G G G G G G G G G G G G G G G G G MW14831 SB04333a SB04433a SB04435a SB04534a TMW04037 TMW04127 TMW04130 TMW04135 TMW04233 TMW04235 TMW04332 TMW04436 TMW04436 TMW04436 TMW04528 TMW04531 M20515 H10013 H10012 H10014 H10011 H90131 H10201 H10200 H10202 H60020 M60012 H90126 H60013 H60019Q H90133 H30201 H /18/2005 6/21/2000 6/21/2000 6/21/2000 6/21/ /19/2002 3/7/2003 3/7/2003 3/7/ /18/ /14/ /19/ /17/ /17/ /20/2002 3/8/2003 3/8/2003 (27) ft BGS (38) ft BGS (05) ft BGS (38) ft BGS (Duplicate) Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation VOAs a b c d e 1,1,1,2Tetrachloroethane ,1,1Trichloroethane ,1,2,2Tetrachloroethane ,1,2Trichloroethane ,1Dichloroethane ,1Dichloroethene ,1Dichloropropene 1,2,3Trichlorobenzene 1,2,3Trichloropropane ,2,4Trichlorobenzene ,2,4Trimethylbenzene ,2Dibromo3chloropropane (DBCP) ,2Dibromoethane (Ethylene dibromide) ,2Dichlorobenzene ,2Dichloroethane ,2Dichloropropane ,3,5Trimethylbenzene ,3Dichlorobenzene ,3Dichloropropane 1,4Dichlorobenzene ,2Dichloropropane 2Butanone (Methyl ethyl ketone) (MEK) Chloroethyl vinyl ether Chlorotoluene Hexanone Phenylbutane (secbutylbenzene) Chlorotoluene 4Methyl2pentanone (Methyl isobutyl ketone) (MIBK) Acetone Acetonitrile Acrolein Acrylonitrile Allyl chloride Benzene Bromobenzene Bromodichloromethane Bromoform Bromomethane (Methyl bromide) Carbon disulfide Carbon tetrachloride Chlorobenzene Chlorobromomethane Chloroethane Chloroform (Trichloromethane) Chloromethane (Methyl chloride) Chloroprene cis1,2dichloroethene cis1,3dichloropropene cis1,4dichloro2butene Cyclohexane Cymene (pisopropyltoluene) Dibromochloromethane Dibromomethane Dichlorodifluoromethane (CFC12) Ethyl methacrylate Ethylbenzene Hexachlorobutadiene Iodomethane Isopropyl benzene m&pxylenes Methyl acetate Methyl acrylonitrile Methyl cyclohexane Methyl methacrylate Methyl tert butyl ether (MTBE) Methylene chloride Naphthalene NButylbenzene U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U R R R R U U U R R R R U U U U U U U 0.02 U 0.02 U 0.02 U 0.02 U 0.05 U 0.05 U 0.05 U 0.02 U 0.02 U 0.02 U 0.02 U 0.05 U 0.05 U U U U U U U U U U U R R R R 0.05 U 0.05 U 0.05 U R R R R 0.05 U 0.05 U R R R R J J U R R R R U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U Memo32T1 T3 T5 6/7/2018

45 Table 1 Page 27 of 40 Portion of IU G Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation NPropylbenzene 0.08 oxylene Propionitrile (ethyl cyanide) Styrene tertbutylbenzene 0.08 Tetrachloroethene Toluene trans1,2dichloroethene trans1,3dichloropropene trans1,4dichloro2butene Trichloroethene Trichlorofluoromethane (CFC11) Trifluorotrichloroethane (CFC113) Vinyl acetate Vinyl chloride Xylenes (total) G G G G G G G G G G G G G G G G G MW14831 SB04333a SB04433a SB04435a SB04534a TMW04037 TMW04127 TMW04130 TMW04135 TMW04233 TMW04235 TMW04332 TMW04436 TMW04436 TMW04436 TMW04528 TMW04531 M20515 H10013 H10012 H10014 H10011 H90131 H10201 H10200 H10202 H60020 M60012 H90126 H60013 H60019Q H90133 H30201 H /18/2005 6/21/2000 6/21/2000 6/21/2000 6/21/ /19/2002 3/7/2003 3/7/2003 3/7/ /18/ /14/ /19/ /17/ /17/ /20/2002 3/8/2003 3/8/2003 (27) ft BGS (38) ft BGS (05) ft BGS (38) ft BGS (Duplicate) U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U J J J J U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U J b J U U U U U U U U U SVOAs 0,0,0Triethylphosphorothioate 1,2,4,5Tetrachlorobenzene ,2,4Trichlorobenzene ,2Dichlorobenzene ,2Diphenylhydrazine 1,3,5Trinitrobenzene 1,3Dichlorobenzene ,3Dinitrobenzene 1,4Dichlorobenzene ,4Naphthoquinone 1Naphthylamine 2,2'Oxybis(1chloropropane) (bis(2chloroisopropyl) ether) 2,3,4,6Tetrachlorophenol 2,3Dichlorophenol 2,3Dimethylphenol 2,4,5Trichlorophenol ,4,6Trichlorophenol ,4Dichlorophenol ,4Dimethylphenol ,4Dinitrophenol 2,4Dinitrotoluene ,6Dichlorophenol 2,6Dimethylphenol ,6Dinitrotoluene 2Acetylaminofluorene 2Chloronaphthalene Chlorophenol Methylnaphthalene Methylphenol Naphthylamine 2Nitroaniline 2Nitrophenol Toluidine 3&4Methylphenol ,3'Dichlorobenzidine ,3Dimethylbenzidine 3,4Dimethylphenol ,5Dimethylphenol 3/4Chlorophenol 3Methylcholanthrene 3Methylphenol Nitroaniline 4,6Dinitro2methylphenol Aminobiphenyl 4Bromophenyl phenyl ether 4Chloro3methylphenol Chloroaniline 4Chlorophenyl phenyl ether 4Dimethylaminoazobenzene 4Methylphenol Nitroaniline 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U U U U U U 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U 0.01 U 0.01 U U U U U U U U U U U 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U U U U U U U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U U U U 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U U U U U 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U U U U U U U U U U 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U Memo32T1 T3 T5 6/7/2018

46 Table 1 Page 28 of 40 Portion of IU G Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation 4Nitrophenol 5Nitro2toluidine 7,12Dimethylbenz(a)anthracene Acenaphthene Acenaphthylene Acetophenone Aniline Anthracene Atrazine Benzaldehyde Benzidine Benzo(a)anthracene Benzo(a)pyrene Benzo(b)fluoranthene Benzo(g,h,i)perylene Benzo(k)fluoranthene Benzoic acid Benzyl alcohol Biphenyl (1,1Biphenyl) bis(2chloroethoxy)ethane bis(2chloroethoxy)methane bis(2chloroethyl)ether bis(2ethylhexyl)adipate bis(2ethylhexyl)phthalate (DEHP) Butyl benzylphthalate (BBP) Caprolactam Carbazole Chlorobenzilate Chrysene Diallate Dibenz(a,h)anthracene Dibenzofuran Dicyclohexyl phthalate 4 Diethyl phthalate Dimethoate Dimethyl phthalate Dinbutylphthalate (DBP) Dinoctyl phthalate (DnOP) Dinoseb Diphenylamine Disulfoton Ethyl methanesulfonate Ethyl parathion Famphur Fluoranthene Fluorene Hexachlorobenzene Hexachlorobutadiene Hexachlorocyclopentadiene Hexachloroethane Hexachloropropene Indeno(1,2,3cd)pyrene Isodrin Isophorone Isosafrole Kepone Methapyrilene Methyl methanesulfonate Methyl parathion Naphthalene Nitrobenzene NNitrosodiethylamine NNitrosodimethylamine NNitrosodinbutylamine NNitrosodinpropylamine NNitrosodiphenylamine NNitrosomethylethylamine NNitrosopiperidine NNitrosopyrrolidine Pentachlorobenzene G G G G G G G G G G G G G G G G G MW14831 SB04333a SB04433a SB04435a SB04534a TMW04037 TMW04127 TMW04130 TMW04135 TMW04233 TMW04235 TMW04332 TMW04436 TMW04436 TMW04436 TMW04528 TMW04531 M20515 H10013 H10012 H10014 H10011 H90131 H10201 H10200 H10202 H60020 M60012 H90126 H60013 H60019Q H90133 H30201 H /18/2005 6/21/2000 6/21/2000 6/21/2000 6/21/ /19/2002 3/7/2003 3/7/2003 3/7/ /18/ /14/ /19/ /17/ /17/ /20/2002 3/8/2003 3/8/2003 (27) ft BGS (38) ft BGS (05) ft BGS (38) ft BGS (Duplicate) U U U U 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U Memo32T1 T3 T5 6/7/2018

47 Table 1 Page 29 of 40 Portion of IU G Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation Pentachloronitrobenzene Pentachlorophenol (1) Phenacetin Phenanthrene Phenol Phorate pphenylenediamine Pronamide Pyrene Pyridine Safrole Thionazin (O,OdiethylO2pyrazinyl phosphorothioate) G G G G G G G G G G G G G G G G G MW14831 SB04333a SB04433a SB04435a SB04534a TMW04037 TMW04127 TMW04130 TMW04135 TMW04233 TMW04235 TMW04332 TMW04436 TMW04436 TMW04436 TMW04528 TMW04531 M20515 H10013 H10012 H10014 H10011 H90131 H10201 H10200 H10202 H60020 M60012 H90126 H60013 H60019Q H90133 H30201 H /18/2005 6/21/2000 6/21/2000 6/21/2000 6/21/ /19/2002 3/7/2003 3/7/2003 3/7/ /18/ /14/ /19/ /17/ /17/ /20/2002 3/8/2003 3/8/2003 (27) ft BGS (38) ft BGS (05) ft BGS (38) ft BGS (Duplicate) U U U U 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U U U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U Metals Aluminum 0.05 Aluminum (dissolved) 0.05 Antimony Antimony (dissolved) Arsenic Arsenic (dissolved) Barium (1) Barium (dissolved) (1) Beryllium (1) Beryllium (dissolved) Cadmium (1) Cadmium (dissolved) (1) Calcium Calcium (dissolved) Chromium 0.1 Chromium (dissolved) 0.1 Chromium III (trivalent) (1) Chromium VI (hexavalent) Chromium VI (hexavalent) (dissolved) Cobalt Cobalt (dissolved) Copper (1) Copper (dissolved) (1) Cyanide (total) Iron 0.3 Iron (dissolved) 0.3 Lead (1) Lead (dissolved) (1) Magnesium 400 Magnesium (dissolved) 400 Manganese (1) Manganese (dissolved) (1) Mercury Mercury (dissolved) Nickel (1) Nickel (dissolved) (1) Potassium Potassium (dissolved) Selenium Selenium (dissolved) Silver Silver (dissolved) Sodium 230 Sodium (dissolved) 230 Thallium Thallium (dissolved) Tin Tin (dissolved) Vanadium Vanadium (dissolved) Zinc (1) U U U U U U 0.05 U J J J J J U U J J J J U U U U U U U U U U U U 86.9 J 44.7 J 102 J 50.2 J 64.6 J U U U U U U U U J U U 0.01 U U U U U U 7.3 b 3.3 J b 4.9 b 2.7 b 0.96 b J U U U U U 19.6 J 11.3 J 22.2 J b 0.73 J b 0.55 J b 0.77 J b 0.48 J b 0.46 J b U U U U J a 0.02 U U U U J U 19.5 J 19.9 J 11.1 J 34.5 J 34.3 J J J J a U U U U U U U U U U 0.01 U U J U U U J Memo32T1 T3 T5 6/7/2018

48 Table 1 Page 30 of 40 Portion of IU G Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 Surface Water Interface Zinc (dissolved) (1) Non GW Volatilization to Water Solubility Indoor Air Inhalation G G G G G G G G G G G G G G G G G MW14831 SB04333a SB04433a SB04435a SB04534a TMW04037 TMW04127 TMW04130 TMW04135 TMW04233 TMW04235 TMW04332 TMW04436 TMW04436 TMW04436 TMW04528 TMW04531 M20515 H10013 H10012 H10014 H10011 H90131 H10201 H10200 H10202 H60020 M60012 H90126 H60013 H60019Q H90133 H30201 H /18/2005 6/21/2000 6/21/2000 6/21/2000 6/21/ /19/2002 3/7/2003 3/7/2003 3/7/ /18/ /14/ /19/ /17/ /17/ /20/2002 3/8/2003 3/8/2003 (27) ft BGS (38) ft BGS (05) ft BGS (38) ft BGS (Duplicate) J J J U U PCBs Aroclor1016 (PCB1016) Aroclor1221 (PCB1221) Aroclor1232 (PCB1232) Aroclor1242 (PCB1242) Aroclor1248 (PCB1248) Aroclor1254 (PCB1254) Aroclor1260 (PCB1260) Total PCBs U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U a U U U U U U U U U U U U a U U U U U U U U U U U Petrl Prod Ethylene glycol Propylene glycol Wet Alkalinity, total (as CaCO3) Ammonia Ammonia, field AmmoniaN Chloride 250 Cyanide (amenable) 0.2 Cyanide (total) Fluoride Formaldehyde Nitrate (as N) 10 Nitrite (as N) 1 ph s.u ph, field s.u ph, lab s.u Sulfide Temperature, field Deg C Total kjeldahl nitrogen (TKN) Total organic carbon (TOC) Unionized ammonia J 4.8 J 1.6 J J 2.1 J FPARAM Conductivity, field umhos/cm Dissolved oxygen (DO), field Oxidation reduction potential (ORP) millivolts ph, field s.u Temperature, field Deg C Turbidity NTU b Footnotes: U Not detected at the associated reporting limit. J Estimated concentration. UJ Not detected; associated reporting limit is estimated. R Rejected b Exceedance of Part 201 Generic Cleanup Criteria and s dated December 31, b Exceedance of screening levels in the latest round of groundwater data for a given location Downgradient sampling location included in the groundwater evaluation discussion not analyzed (1) The GSI criteria is dependent on the ph or hardness, or both, of the receiving surface water. The estimated ph for the Saginaw River is 8 and the estimated hardness for the Saginaw River is 275 mg CaCO3/L Memo32T1 T3 T5 6/7/2018

49 Table 1 Page 31 of 40 Portion of IU G Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 G G G G G G G G G G G G G G G G G TMW04630 TMW04632 TMW04635 TMW04837 TMW04934 TMW04935 TMW04936 TMW04937 TMW04938 TMW05032 TMW05032 TMW05035 TMW05035 TMW05036 TMW05037 TMW05135 TMW05135 H90127 H60014 H10203 H90134 H90130 H40011 H40010 H40009 H00151 H30200 H30200Q H10204 H10204Q H40012 H40008 H70100 H70107Q 12/19/ /17/2001 3/7/ /20/ /19/ /20/ /19/ /19/2001 1/5/2003 3/8/2003 3/8/2003 3/7/2003 3/7/ /20/ /20/ /19/ /19/2002 (Duplicate) (Duplicate) (Duplicate) Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation VOAs a b c d e 1,1,1,2Tetrachloroethane ,1,1Trichloroethane ,1,2,2Tetrachloroethane ,1,2Trichloroethane ,1Dichloroethane ,1Dichloroethene ,1Dichloropropene 1,2,3Trichlorobenzene 1,2,3Trichloropropane ,2,4Trichlorobenzene ,2,4Trimethylbenzene ,2Dibromo3chloropropane (DBCP) ,2Dibromoethane (Ethylene dibromide) ,2Dichlorobenzene ,2Dichloroethane ,2Dichloropropane ,3,5Trimethylbenzene ,3Dichlorobenzene ,3Dichloropropane 1,4Dichlorobenzene ,2Dichloropropane 2Butanone (Methyl ethyl ketone) (MEK) Chloroethyl vinyl ether Chlorotoluene Hexanone Phenylbutane (secbutylbenzene) Chlorotoluene 4Methyl2pentanone (Methyl isobutyl ketone) (MIBK) Acetone Acetonitrile Acrolein Acrylonitrile Allyl chloride Benzene Bromobenzene Bromodichloromethane Bromoform Bromomethane (Methyl bromide) Carbon disulfide Carbon tetrachloride Chlorobenzene Chlorobromomethane Chloroethane Chloroform (Trichloromethane) Chloromethane (Methyl chloride) Chloroprene cis1,2dichloroethene cis1,3dichloropropene cis1,4dichloro2butene Cyclohexane Cymene (pisopropyltoluene) Dibromochloromethane Dibromomethane Dichlorodifluoromethane (CFC12) Ethyl methacrylate Ethylbenzene Hexachlorobutadiene Iodomethane Isopropyl benzene m&pxylenes Methyl acetate Methyl acrylonitrile Methyl cyclohexane Methyl methacrylate Methyl tert butyl ether (MTBE) Methylene chloride Naphthalene NButylbenzene U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U R U U U U U U U U U U 0.02 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U U U U U U U U U U U R 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U J J U U J J U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U J J J J U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U Memo32T1 T3 T5 6/7/2018

50 Table 1 Page 32 of 40 Portion of IU G Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation NPropylbenzene 0.08 oxylene Propionitrile (ethyl cyanide) Styrene tertbutylbenzene 0.08 Tetrachloroethene Toluene trans1,2dichloroethene trans1,3dichloropropene trans1,4dichloro2butene Trichloroethene Trichlorofluoromethane (CFC11) Trifluorotrichloroethane (CFC113) Vinyl acetate Vinyl chloride Xylenes (total) G G G G G G G G G G G G G G G G G TMW04630 TMW04632 TMW04635 TMW04837 TMW04934 TMW04935 TMW04936 TMW04937 TMW04938 TMW05032 TMW05032 TMW05035 TMW05035 TMW05036 TMW05037 TMW05135 TMW05135 H90127 H60014 H10203 H90134 H90130 H40011 H40010 H40009 H00151 H30200 H30200Q H10204 H10204Q H40012 H40008 H70100 H70107Q 12/19/ /17/2001 3/7/ /20/ /19/ /20/ /19/ /19/2001 1/5/2003 3/8/2003 3/8/2003 3/7/2003 3/7/ /20/ /20/ /19/ /19/2002 (Duplicate) (Duplicate) (Duplicate) U U U U U U U U U U U U U U U U U U U U U U U U U U U U U J U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U SVOAs 0,0,0Triethylphosphorothioate 1,2,4,5Tetrachlorobenzene ,2,4Trichlorobenzene ,2Dichlorobenzene ,2Diphenylhydrazine 1,3,5Trinitrobenzene 1,3Dichlorobenzene ,3Dinitrobenzene 1,4Dichlorobenzene ,4Naphthoquinone 1Naphthylamine 2,2'Oxybis(1chloropropane) (bis(2chloroisopropyl) ether) 2,3,4,6Tetrachlorophenol 2,3Dichlorophenol 2,3Dimethylphenol 2,4,5Trichlorophenol ,4,6Trichlorophenol ,4Dichlorophenol ,4Dimethylphenol ,4Dinitrophenol 2,4Dinitrotoluene ,6Dichlorophenol 2,6Dimethylphenol ,6Dinitrotoluene 2Acetylaminofluorene 2Chloronaphthalene Chlorophenol Methylnaphthalene Methylphenol Naphthylamine 2Nitroaniline 2Nitrophenol Toluidine 3&4Methylphenol ,3'Dichlorobenzidine ,3Dimethylbenzidine 3,4Dimethylphenol ,5Dimethylphenol 3/4Chlorophenol 3Methylcholanthrene 3Methylphenol Nitroaniline 4,6Dinitro2methylphenol Aminobiphenyl 4Bromophenyl phenyl ether 4Chloro3methylphenol Chloroaniline 4Chlorophenyl phenyl ether 4Dimethylaminoazobenzene 4Methylphenol Nitroaniline 0.01 U 0.02 U 0.02 U 0.01 U 0.01 U 0.01 U 0.02 U 0.02 U 0.01 U 0.01 U 0.01 U 0.02 U 0.02 U 0.01 U 0.01 U 0.01 U 0.02 U 0.02 U 0.01 U 0.01 U U 0.01 U 0.01 U U U U 0.01 U 0.01 U U U U U U U U 0.01 U 0.02 U 0.02 U 0.01 U 0.01 U U U 0.04 U 0.04 U 0.02 U 0.02 U U 0.01 U 0.01 U U U U 0.01 U 0.01 U U U U 0.01 U 0.01 U U U U 0.01 U 0.01 U U U U 0.01 U 0.01 U U U U J J J J 0.02 U 0.04 U 0.04 U 0.02 U 0.02 U U 0.01 U 0.01 U U U U U U U U 0.01 U J # J # # J # 0.02 U 0.04 U 0.04 U 0.02 U 0.02 U 0.02 U 0.04 U 0.04 U 0.02 U 0.02 U U 0.01 U 0.01 U U U U 0.01 U 0.01 U U U 0.02 U 0.04 U 0.04 U 0.02 U 0.02 U U 0.01 U 0.01 U U U U # # # # 0.02 U 0.04 U 0.04 U 0.02 U 0.02 U Memo32T1 T3 T5 6/7/2018

51 Table 1 Page 33 of 40 Portion of IU G Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation 4Nitrophenol 5Nitro2toluidine 7,12Dimethylbenz(a)anthracene Acenaphthene Acenaphthylene Acetophenone Aniline Anthracene Atrazine Benzaldehyde Benzidine Benzo(a)anthracene Benzo(a)pyrene Benzo(b)fluoranthene Benzo(g,h,i)perylene Benzo(k)fluoranthene Benzoic acid Benzyl alcohol Biphenyl (1,1Biphenyl) bis(2chloroethoxy)ethane bis(2chloroethoxy)methane bis(2chloroethyl)ether bis(2ethylhexyl)adipate bis(2ethylhexyl)phthalate (DEHP) Butyl benzylphthalate (BBP) Caprolactam Carbazole Chlorobenzilate Chrysene Diallate Dibenz(a,h)anthracene Dibenzofuran Dicyclohexyl phthalate 4 Diethyl phthalate Dimethoate Dimethyl phthalate Dinbutylphthalate (DBP) Dinoctyl phthalate (DnOP) Dinoseb Diphenylamine Disulfoton Ethyl methanesulfonate Ethyl parathion Famphur Fluoranthene Fluorene Hexachlorobenzene Hexachlorobutadiene Hexachlorocyclopentadiene Hexachloroethane Hexachloropropene Indeno(1,2,3cd)pyrene Isodrin Isophorone Isosafrole Kepone Methapyrilene Methyl methanesulfonate Methyl parathion Naphthalene Nitrobenzene NNitrosodiethylamine NNitrosodimethylamine NNitrosodinbutylamine NNitrosodinpropylamine NNitrosodiphenylamine NNitrosomethylethylamine NNitrosopiperidine NNitrosopyrrolidine Pentachlorobenzene G G G G G G G G G G G G G G G G G TMW04630 TMW04632 TMW04635 TMW04837 TMW04934 TMW04935 TMW04936 TMW04937 TMW04938 TMW05032 TMW05032 TMW05035 TMW05035 TMW05036 TMW05037 TMW05135 TMW05135 H90127 H60014 H10203 H90134 H90130 H40011 H40010 H40009 H00151 H30200 H30200Q H10204 H10204Q H40012 H40008 H70100 H70107Q 12/19/ /17/2001 3/7/ /20/ /19/ /20/ /19/ /19/2001 1/5/2003 3/8/2003 3/8/2003 3/7/2003 3/7/ /20/ /20/ /19/ /19/2002 (Duplicate) (Duplicate) (Duplicate) 0.02 U 0.04 U 0.04 U 0.02 U 0.02 U U 0.01 U 0.01 U U U U 0.01 U 0.01 U U U U 0.01 U 0.01 U U U U U U U U U U U U U U U U U U U 0.01 U 0.01 U U U U 0.01 U 0.01 U U U U 0.01 U 0.01 U U U U U U U U U 0.01 U 0.01 U b U U 0.01 U 0.01 U U U 0.01 U 0.02 U 0.02 U 0.01 U 0.01 U U 0.01 U 0.01 U U U U U U U U U 0.01 U 0.01 U U U U 0.01 U 0.01 U U U U 0.01 U 0.01 U U U U 0.01 U 0.01 U U U U 0.01 U 0.01 U U U U 0.01 U 0.01 U U U U 0.01 U 0.01 U U U U 0.01 U 0.01 U U U U 0.01 U 0.01 U U U U 0.01 U 0.01 U U U U 0.01 U 0.01 U U U U U U U U U 0.01 U 0.01 U U U U 0.01 U 0.01 U U U U U U U U U 0.01 U 0.01 U U U U 0.01 U 0.01 U U U Memo32T1 T3 T5 6/7/2018

52 Table 1 Page 34 of 40 Portion of IU G Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation Pentachloronitrobenzene Pentachlorophenol (1) Phenacetin Phenanthrene Phenol Phorate pphenylenediamine Pronamide Pyrene Pyridine Safrole Thionazin (O,OdiethylO2pyrazinyl phosphorothioate) G G G G G G G G G G G G G G G G G TMW04630 TMW04632 TMW04635 TMW04837 TMW04934 TMW04935 TMW04936 TMW04937 TMW04938 TMW05032 TMW05032 TMW05035 TMW05035 TMW05036 TMW05037 TMW05135 TMW05135 H90127 H60014 H10203 H90134 H90130 H40011 H40010 H40009 H00151 H30200 H30200Q H10204 H10204Q H40012 H40008 H70100 H70107Q 12/19/ /17/2001 3/7/ /20/ /19/ /20/ /19/ /19/2001 1/5/2003 3/8/2003 3/8/2003 3/7/2003 3/7/ /20/ /20/ /19/ /19/2002 (Duplicate) (Duplicate) (Duplicate) 0.02 U 0.04 U 0.04 U 0.02 U 0.02 U U 0.01 U 0.01 U U U U U 0.01 U 0.01 U U U Metals Aluminum 0.05 Aluminum (dissolved) 0.05 Antimony Antimony (dissolved) Arsenic Arsenic (dissolved) Barium (1) Barium (dissolved) (1) Beryllium (1) Beryllium (dissolved) Cadmium (1) Cadmium (dissolved) (1) Calcium Calcium (dissolved) Chromium 0.1 Chromium (dissolved) 0.1 Chromium III (trivalent) (1) Chromium VI (hexavalent) Chromium VI (hexavalent) (dissolved) Cobalt Cobalt (dissolved) Copper (1) Copper (dissolved) (1) Cyanide (total) Iron 0.3 Iron (dissolved) 0.3 Lead (1) Lead (dissolved) (1) Magnesium 400 Magnesium (dissolved) 400 Manganese (1) Manganese (dissolved) (1) Mercury Mercury (dissolved) Nickel (1) Nickel (dissolved) (1) Potassium Potassium (dissolved) Selenium Selenium (dissolved) Silver Silver (dissolved) Sodium 230 Sodium (dissolved) 230 Thallium Thallium (dissolved) Tin Tin (dissolved) Vanadium Vanadium (dissolved) Zinc (1) U 1.4 b 1.6 b 1.5 b 1.4 b J J J J ab ab J J ab ab ab ab ab ab J J J J J U U U U U U J U U U 82.1 J 68.2 J 80.7 J 26.7 J 26.9 J U U U U U J U U U U U U U U U 1.6 b U U U U U 37.8 J 0.13 J J 0.10 U 0.10 U 1.0 J b J U U U U U U U U J U U J J 32.4 J 28.9 J 32.3 J 63.7 J 63.6 J J U J J U U U U U U U U U U J J Memo32T1 T3 T5 6/7/2018

53 Table 1 Page 35 of 40 Portion of IU G Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 Surface Water Interface Zinc (dissolved) (1) Non GW Volatilization to Water Solubility Indoor Air Inhalation G G G G G G G G G G G G G G G G G TMW04630 TMW04632 TMW04635 TMW04837 TMW04934 TMW04935 TMW04936 TMW04937 TMW04938 TMW05032 TMW05032 TMW05035 TMW05035 TMW05036 TMW05037 TMW05135 TMW05135 H90127 H60014 H10203 H90134 H90130 H40011 H40010 H40009 H00151 H30200 H30200Q H10204 H10204Q H40012 H40008 H70100 H70107Q 12/19/ /17/2001 3/7/ /20/ /19/ /20/ /19/ /19/2001 1/5/2003 3/8/2003 3/8/2003 3/7/2003 3/7/ /20/ /20/ /19/ /19/2002 (Duplicate) (Duplicate) (Duplicate) J U U J U PCBs Aroclor1016 (PCB1016) Aroclor1221 (PCB1221) Aroclor1232 (PCB1232) Aroclor1242 (PCB1242) Aroclor1248 (PCB1248) Aroclor1254 (PCB1254) Aroclor1260 (PCB1260) Total PCBs U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U J J U U U U J J U U Petrl Prod Ethylene glycol Propylene glycol Wet Alkalinity, total (as CaCO3) Ammonia Ammonia, field AmmoniaN Chloride 250 Cyanide (amenable) 0.2 Cyanide (total) Fluoride Formaldehyde Nitrate (as N) 10 Nitrite (as N) 1 ph s.u ph, field s.u ph, lab s.u Sulfide Temperature, field Deg C Total kjeldahl nitrogen (TKN) Total organic carbon (TOC) Unionized ammonia 4.2 J J ab J b 9.5 J 19 J ab 18 J ab 17.7 J ab 0.65 J FPARAM Conductivity, field umhos/cm Dissolved oxygen (DO), field Oxidation reduction potential (ORP) millivolts ph, field s.u Temperature, field Deg C Turbidity NTU b b b b b b b Footnotes: U Not detected at the associated reporting limit. J Estimated concentration. UJ Not detected; associated reporting limit is estimated. R Rejected b Exceedance of Part 201 Generic Cleanup Criteria and s dated December 31, b Exceedance of screening levels in the latest round of groundwater data for a given location Downgradient sampling location included in the groundwater evaluation discussion not analyzed (1) The GSI criteria is dependent on the ph or hardness, or both, of the receiving surface water. The estimated ph for the Saginaw River is 8 and the estimated hardness for the Saginaw River is 275 mg CaCO3/L Memo32T1 T3 T5 6/7/2018

54 Table 1 Page 36 of 40 Portion of IU G Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 G G G G G TMW05136 TMW05136 TMW05137 TMW05139 TMW05337 H40005Q H40006 H40007 H70106 H /19/ /19/ /19/ /19/ /19/2002 (Duplicate) Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation VOAs a b c d e 1,1,1,2Tetrachloroethane ,1,1Trichloroethane ,1,2,2Tetrachloroethane ,1,2Trichloroethane ,1Dichloroethane ,1Dichloroethene ,1Dichloropropene 1,2,3Trichlorobenzene 1,2,3Trichloropropane ,2,4Trichlorobenzene ,2,4Trimethylbenzene ,2Dibromo3chloropropane (DBCP) ,2Dibromoethane (Ethylene dibromide) ,2Dichlorobenzene ,2Dichloroethane ,2Dichloropropane ,3,5Trimethylbenzene ,3Dichlorobenzene ,3Dichloropropane 1,4Dichlorobenzene ,2Dichloropropane 2Butanone (Methyl ethyl ketone) (MEK) Chloroethyl vinyl ether Chlorotoluene Hexanone Phenylbutane (secbutylbenzene) Chlorotoluene 4Methyl2pentanone (Methyl isobutyl ketone) (MIBK) Acetone Acetonitrile Acrolein Acrylonitrile Allyl chloride Benzene Bromobenzene Bromodichloromethane Bromoform Bromomethane (Methyl bromide) Carbon disulfide Carbon tetrachloride Chlorobenzene Chlorobromomethane Chloroethane Chloroform (Trichloromethane) Chloromethane (Methyl chloride) Chloroprene cis1,2dichloroethene cis1,3dichloropropene cis1,4dichloro2butene Cyclohexane Cymene (pisopropyltoluene) Dibromochloromethane Dibromomethane Dichlorodifluoromethane (CFC12) Ethyl methacrylate Ethylbenzene Hexachlorobutadiene Iodomethane Isopropyl benzene m&pxylenes Methyl acetate Methyl acrylonitrile Methyl cyclohexane Methyl methacrylate Methyl tert butyl ether (MTBE) Methylene chloride Naphthalene NButylbenzene U U U U U Memo32T1 T3 T5 6/7/2018

55 Table 1 Page 37 of 40 Portion of IU G Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation NPropylbenzene 0.08 oxylene Propionitrile (ethyl cyanide) Styrene tertbutylbenzene 0.08 Tetrachloroethene Toluene trans1,2dichloroethene trans1,3dichloropropene trans1,4dichloro2butene Trichloroethene Trichlorofluoromethane (CFC11) Trifluorotrichloroethane (CFC113) Vinyl acetate Vinyl chloride Xylenes (total) G G G G G TMW05136 TMW05136 TMW05137 TMW05139 TMW05337 H40005Q H40006 H40007 H70106 H /19/ /19/ /19/ /19/ /19/2002 (Duplicate) U U SVOAs 0,0,0Triethylphosphorothioate 1,2,4,5Tetrachlorobenzene ,2,4Trichlorobenzene ,2Dichlorobenzene ,2Diphenylhydrazine 1,3,5Trinitrobenzene 1,3Dichlorobenzene ,3Dinitrobenzene 1,4Dichlorobenzene ,4Naphthoquinone 1Naphthylamine 2,2'Oxybis(1chloropropane) (bis(2chloroisopropyl) ether) 2,3,4,6Tetrachlorophenol 2,3Dichlorophenol 2,3Dimethylphenol 2,4,5Trichlorophenol ,4,6Trichlorophenol ,4Dichlorophenol ,4Dimethylphenol ,4Dinitrophenol 2,4Dinitrotoluene ,6Dichlorophenol 2,6Dimethylphenol ,6Dinitrotoluene 2Acetylaminofluorene 2Chloronaphthalene Chlorophenol Methylnaphthalene Methylphenol Naphthylamine 2Nitroaniline 2Nitrophenol Toluidine 3&4Methylphenol ,3'Dichlorobenzidine ,3Dimethylbenzidine 3,4Dimethylphenol ,5Dimethylphenol 3/4Chlorophenol 3Methylcholanthrene 3Methylphenol Nitroaniline 4,6Dinitro2methylphenol Aminobiphenyl 4Bromophenyl phenyl ether 4Chloro3methylphenol Chloroaniline 4Chlorophenyl phenyl ether 4Dimethylaminoazobenzene 4Methylphenol Nitroaniline Memo32T1 T3 T5 6/7/2018

56 Table 1 Page 38 of 40 Portion of IU G Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation 4Nitrophenol 5Nitro2toluidine 7,12Dimethylbenz(a)anthracene Acenaphthene Acenaphthylene Acetophenone Aniline Anthracene Atrazine Benzaldehyde Benzidine Benzo(a)anthracene Benzo(a)pyrene Benzo(b)fluoranthene Benzo(g,h,i)perylene Benzo(k)fluoranthene Benzoic acid Benzyl alcohol Biphenyl (1,1Biphenyl) bis(2chloroethoxy)ethane bis(2chloroethoxy)methane bis(2chloroethyl)ether bis(2ethylhexyl)adipate bis(2ethylhexyl)phthalate (DEHP) Butyl benzylphthalate (BBP) Caprolactam Carbazole Chlorobenzilate Chrysene Diallate Dibenz(a,h)anthracene Dibenzofuran Dicyclohexyl phthalate 4 Diethyl phthalate Dimethoate Dimethyl phthalate Dinbutylphthalate (DBP) Dinoctyl phthalate (DnOP) Dinoseb Diphenylamine Disulfoton Ethyl methanesulfonate Ethyl parathion Famphur Fluoranthene Fluorene Hexachlorobenzene Hexachlorobutadiene Hexachlorocyclopentadiene Hexachloroethane Hexachloropropene Indeno(1,2,3cd)pyrene Isodrin Isophorone Isosafrole Kepone Methapyrilene Methyl methanesulfonate Methyl parathion Naphthalene Nitrobenzene NNitrosodiethylamine NNitrosodimethylamine NNitrosodinbutylamine NNitrosodinpropylamine NNitrosodiphenylamine NNitrosomethylethylamine NNitrosopiperidine NNitrosopyrrolidine Pentachlorobenzene G G G G G TMW05136 TMW05136 TMW05137 TMW05139 TMW05337 H40005Q H40006 H40007 H70106 H /19/ /19/ /19/ /19/ /19/2002 (Duplicate) Memo32T1 T3 T5 6/7/2018

57 Table 1 Page 39 of 40 Portion of IU G Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation Pentachloronitrobenzene Pentachlorophenol (1) Phenacetin Phenanthrene Phenol Phorate pphenylenediamine Pronamide Pyrene Pyridine Safrole Thionazin (O,OdiethylO2pyrazinyl phosphorothioate) G G G G G TMW05136 TMW05136 TMW05137 TMW05139 TMW05337 H40005Q H40006 H40007 H70106 H /19/ /19/ /19/ /19/ /19/2002 (Duplicate) Metals Aluminum 0.05 Aluminum (dissolved) 0.05 Antimony Antimony (dissolved) Arsenic Arsenic (dissolved) Barium (1) Barium (dissolved) (1) Beryllium (1) Beryllium (dissolved) Cadmium (1) Cadmium (dissolved) (1) Calcium Calcium (dissolved) Chromium 0.1 Chromium (dissolved) 0.1 Chromium III (trivalent) (1) Chromium VI (hexavalent) Chromium VI (hexavalent) (dissolved) Cobalt Cobalt (dissolved) Copper (1) Copper (dissolved) (1) Cyanide (total) Iron 0.3 Iron (dissolved) 0.3 Lead (1) Lead (dissolved) (1) Magnesium 400 Magnesium (dissolved) 400 Manganese (1) Manganese (dissolved) (1) Mercury Mercury (dissolved) Nickel (1) Nickel (dissolved) (1) Potassium Potassium (dissolved) Selenium Selenium (dissolved) Silver Silver (dissolved) Sodium 230 Sodium (dissolved) 230 Thallium Thallium (dissolved) Tin Tin (dissolved) Vanadium Vanadium (dissolved) Zinc (1) J J ab J J 0.02 ab Memo32T1 T3 T5 6/7/2018

58 Table 1 Page 40 of 40 Portion of IU G Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 Surface Water Interface Zinc (dissolved) (1) Non GW Volatilization to Water Solubility Indoor Air Inhalation G G G G G TMW05136 TMW05136 TMW05137 TMW05139 TMW05337 H40005Q H40006 H40007 H70106 H /19/ /19/ /19/ /19/ /19/2002 (Duplicate) PCBs Aroclor1016 (PCB1016) Aroclor1221 (PCB1221) Aroclor1232 (PCB1232) Aroclor1242 (PCB1242) Aroclor1248 (PCB1248) Aroclor1254 (PCB1254) Aroclor1260 (PCB1260) Total PCBs Petrl Prod Ethylene glycol Propylene glycol Wet Alkalinity, total (as CaCO3) Ammonia Ammonia, field AmmoniaN Chloride 250 Cyanide (amenable) 0.2 Cyanide (total) Fluoride Formaldehyde Nitrate (as N) 10 Nitrite (as N) 1 ph s.u ph, field s.u ph, lab s.u Sulfide Temperature, field Deg C Total kjeldahl nitrogen (TKN) Total organic carbon (TOC) Unionized ammonia FPARAM Conductivity, field umhos/cm Dissolved oxygen (DO), field Oxidation reduction potential (ORP) millivolts ph, field s.u Temperature, field Deg C Turbidity NTU b 9.99 b 8.97 b Footnotes: U Not detected at the associated reporting limit. J Estimated concentration. UJ Not detected; associated reporting limit is estimated. R Rejected b Exceedance of Part 201 Generic Cleanup Criteria and s dated December 31, b Exceedance of screening levels in the latest round of groundwater data for a given location Downgradient sampling location included in the groundwater evaluation discussion not analyzed (1) The GSI criteria is dependent on the ph or hardness, or both, of the receiving surface water. The estimated ph for the Saginaw River is 8 and the estimated hardness for the Saginaw River is 275 mg CaCO3/L Memo32T1 T3 T5 6/7/2018

59 Table 2 Page 1 of 10 Portion of IU G Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s G G G G G G G G G G MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 M10004 M20217 H W CA123 M20522 MW04040 GW SSH14004 GW SSH1593 GW SSH /18/1998 8/2/ /19/2002 2/5/2004 2/5/2004 1/20/ /7/ /12/ /3/ /7/2016 Criteria Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A VOAs a b c d e f 1,1,1,2Tetrachloroethane E E E UJ U 1,1,1Trichloroethane E E E UJ U U U 1,1,2,2Tetrachloroethane E E E UJ U U U 1,1,2Trichloroethane E E E UJ U U U 1,1Dichloroethane E E E UJ U U U 1,1Dichloroethene E E E UJ U U U 1,1Dichloropropene N/A N/A N/A UJ U 1,2,3Trichlorobenzene E E E U 1,2,3Trichloropropane E E E U 1,2,4Trichlorobenzene E E E U U 1,2,4Trimethylbenzene E E E U 1,2Dibromo3chloropropane (DBCP) E E E UJ U U 1,2Dibromoethane (Ethylene dibromide) E E E UJ U U 1,2Dichlorobenzene E E E UJ U U 1,2Dichloroethane E E E UJ U U U 1,2Dichloropropane E E E UJ U U U 1,3,5Trimethylbenzene E E E U 1,3Dichlorobenzene E E E UJ U U 1,3Dichloropropane N/A N/A N/A UJ U 1,4Dichlorobenzene E E E UJ U U 2,2Dichloropropane N/A N/A N/A UJ U 2Butanone (Methyl ethyl ketone) (MEK) E E E+01 R R U U 2Chloroethyl vinyl ether E E E U 2Chlorotoluene E E E U 2Hexanone E E E UJ 0.02 U 0.05 U 0.05 U 2Phenylbutane (secbutylbenzene) E E E U 4Chlorotoluene N/A N/A N/A 4Methyl2pentanone (Methyl isobutyl ketone) (MIBK) E E E+00 R R 0.05 U 0.05 U Acetone E E E+02 R R U U Acetonitrile E E E+00 R Acrolein E E E04 R U Acrylonitrile E E E UJ U Allyl chloride N/A N/A N/A UJ Benzene E E E UJ U U U Bromobenzene E E E U Bromodichloromethane E E E UJ U U U Bromoform E E E UJ U U U Bromomethane (Methyl bromide) E E E UJ U U U Carbon disulfide E E E UJ U U U Carbon tetrachloride E E E UJ U U U Chlorobenzene E E E UJ U U U Chlorobromomethane N/A N/A N/A UJ U Chloroethane E E E UJ U U U Chloroform (Trichloromethane) E E E UJ U U U Chloromethane (Methyl chloride) E E E UJ U U U Chloroprene N/A N/A N/A 0.01 UJ cis1,2dichloroethene E E E UJ U U U cis1,3dichloropropene NR NR NR UJ U U U cis1,4dichloro2butene N/A N/A N/A 0.01 UJ Cyclohexane E E E U Cymene (pisopropyltoluene) N/A N/A N/A Dibromochloromethane E E E UJ U U U Dibromomethane E E E UJ U Dichlorodifluoromethane (CFC12) E E E UJ U U Ethyl methacrylate N/A N/A N/A UJ Ethylbenzene E E E UJ U U U Hexachlorobutadiene E E E03 Iodomethane N/A N/A N/A UJ U Isopropyl benzene E E E U U m&pxylenes N/A N/A N/A UJ U Methyl acetate N/A N/A N/A 0.01 U Methyl acrylonitrile N/A N/A N/A UJ Methyl cyclohexane N/A N/A N/A U Methyl methacrylate N/A N/A N/A UJ Methyl tert butyl ether (MTBE) E E E U U Methylene chloride E E E UJ U U U Naphthalene E E E UJ NButylbenzene E E E U NPropylbenzene E E E U oxylene N/A N/A N/A UJ U Memo32 T2 T4 T6 6/7/2018

60 Table 2 Page 2 of 10 Portion of IU G Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s G G G G G G G G G G MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 M10004 M20217 H W CA123 M20522 MW04040 GW SSH14004 GW SSH1593 GW SSH /18/1998 8/2/ /19/2002 2/5/2004 2/5/2004 1/20/ /7/ /12/ /3/ /7/2016 Criteria Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A Propionitrile (ethyl cyanide) N/A N/A N/A R Styrene E E E UJ U U U tertbutylbenzene E E E U Tetrachloroethene E E E UJ U U U Toluene E E E UJ U U U trans1,2dichloroethene E E E UJ U U U trans1,3dichloropropene N/A N/A N/A UJ U U U trans1,4dichloro2butene N/A N/A N/A 0.01 UJ Trichloroethene E E E UJ U U U Trichlorofluoromethane (CFC11) E E E UJ U U Trifluorotrichloroethane (CFC113) E E E U Vinyl acetate E E E UJ 0.05 U Vinyl chloride E E E UJ U U U Xylenes (total) E E E U U SVOAs 0,0,0Triethylphosphorothioate N/A N/A N/A 0.01 U 1,2,4,5Tetrachlorobenzene E E E U 1,2,4Trichlorobenzene E E E U 0.01 U U 1,2Dichlorobenzene E E E U 1,2Diphenylhydrazine N/A N/A N/A U 1,3,5Trinitrobenzene N/A N/A N/A U 1,3Dichlorobenzene E E E U 1,3Dinitrobenzene N/A N/A N/A 0.01 U U 1,4Dichlorobenzene E E E U 1,4Naphthoquinone N/A N/A N/A 0.01 U 1Naphthylamine N/A N/A N/A 0.01 U 2,2'Oxybis(1chloropropane) (bis(2chloroisopropyl) ether) N/A N/A N/A 0.01 U 0.01 U U U 2,3,4,6Tetrachlorophenol N/A N/A N/A 0.01 U 2,3Dichlorophenol N/A N/A N/A U 2,3Dimethylphenol N/A N/A N/A U 2,4,5Trichlorophenol NV NV NV 0.01 U 0.01 U 0.05 U U 2,4,6Trichlorophenol NV NV NV 0.01 U 0.01 U U U 2,4Dichlorophenol NV NV NV 0.01 U 0.01 U U 0.01 U 2,4Dimethylphenol NV NV NV 0.01 U 0.01 U U U 2,4Dinitrophenol NV NV NV U U 0.02 U 0.02 U 2,4Dinitrotoluene NV NV NV 0.01 U 0.01 U U U 2,6Dichlorophenol N/A N/A N/A 0.01 U U 2,6Dimethylphenol NV NV NV U 2,6Dinitrotoluene N/A N/A N/A 0.01 U 0.01 U U U 2Acetylaminofluorene N/A N/A N/A 0.01 U 2Chloronaphthalene N/A N/A N/A 0.01 U 0.01 U U U 2Chlorophenol E E E U 0.01 U U U 2Methylnaphthalene E E E U 0.01 U U U 2Methylphenol NV NV NV 0.01 U 0.01 U U U 2Naphthylamine N/A N/A N/A 0.01 U 2Nitroaniline N/A N/A N/A U U 0.02 U 0.02 U 2Nitrophenol E E E U 0.01 U U U 2Toluidine N/A N/A N/A 0.01 U 3&4Methylphenol N/A N/A N/A 0.01 U 0.01 U U 3,3'Dichlorobenzidine NV NV NV U U 0.02 U U 3,3Dimethylbenzidine N/A N/A N/A U 3,4Dimethylphenol NV NV NV U 3,5Dimethylphenol N/A N/A N/A U 3/4Chlorophenol N/A N/A N/A U 3Methylcholanthrene N/A N/A N/A 0.01 U 3Methylphenol N/A N/A N/A 3Nitroaniline N/A N/A N/A U U 0.02 U 0.02 U 4,6Dinitro2methylphenol NV NV NV U U 0.02 U 0.02 U 4Aminobiphenyl N/A N/A N/A 0.01 U 4Bromophenyl phenyl ether N/A N/A N/A 0.01 U 0.01 U U U 4Chloro3methylphenol NV NV NV 0.01 U 0.01 U U U 4Chloroaniline NV NV NV 0.01 U 0.01 U 0.02 U 0.02 U 4Chlorophenyl phenyl ether N/A N/A N/A 0.01 U 0.01 U U U 4Dimethylaminoazobenzene N/A N/A N/A 0.01 U 4Methylphenol N/A N/A N/A U 4Nitroaniline N/A N/A N/A U U 0.02 U 0.02 U 4Nitrophenol N/A N/A N/A U U 0.02 U 0.02 U 5Nitro2toluidine N/A N/A N/A 0.01 U 7,12Dimethylbenz(a)anthracene N/A N/A N/A 0.01 U Acenaphthene E E E U 0.01 U U U Acenaphthylene E E E U 0.01 U U U Memo32 T2 T4 T6 6/7/2018

61 Table 2 Page 3 of 10 Portion of IU G Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s G G G G G G G G G G MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 M10004 M20217 H W CA123 M20522 MW04040 GW SSH14004 GW SSH1593 GW SSH /18/1998 8/2/ /19/2002 2/5/2004 2/5/2004 1/20/ /7/ /12/ /3/ /7/2016 Criteria Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A Acetophenone E E E U U Aniline NV NV NV U Anthracene E E E U 0.01 U U U Atrazine NV NV NV U Benzaldehyde N/A N/A N/A 0.01 U Benzidine NV NV NV U Benzo(a)anthracene E E E U 0.01 U U U Benzo(a)pyrene NV NV NV 0.01 U 0.01 U U U Benzo(b)fluoranthene NV NV NV 0.01 U 0.01 U U U Benzo(g,h,i)perylene NV NV NV 0.01 U 0.01 U U U Benzo(k)fluoranthene NV NV NV 0.01 U 0.01 U U U Benzoic acid NV NV NV 0.05 U Benzyl alcohol NV NV NV 0.01 U U Biphenyl (1,1Biphenyl) N/A N/A N/A 0.01 U bis(2chloroethoxy)ethane NV NV NV U bis(2chloroethoxy)methane N/A N/A N/A 0.01 U 0.01 U U U bis(2chloroethyl)ether E E E U 0.01 U U U bis(2ethylhexyl)adipate NV NV NV U bis(2ethylhexyl)phthalate (DEHP) NV NV NV 0.01 U 0.01 U U U Butyl benzylphthalate (BBP) NV NV NV 0.01 U 0.01 U U U Caprolactam NV NV NV 0.01 U Carbazole NV NV NV 0.01 U 0.01 U 0.01 U Chlorobenzilate N/A N/A N/A 0.01 U Chrysene NV NV NV 0.01 U 0.01 U U U Diallate N/A N/A N/A 0.01 U Dibenz(a,h)anthracene NV NV NV 0.01 U 0.01 U U U Dibenzofuran E E E U 0.01 U U U Dicyclohexyl phthalate 4 NV NV NV U Diethyl phthalate NV NV NV 0.01 U 0.01 U U U Dimethoate N/A N/A N/A 0.01 U Dimethyl phthalate NV NV NV 0.01 U 0.01 U U U Dinbutylphthalate (DBP) NV NV NV 0.01 U 0.01 U U U Dinoctyl phthalate (DnOP) E E E U 0.01 U U U Dinoseb NV NV NV U Diphenylamine N/A N/A N/A 0.01 U Disulfoton N/A N/A N/A 0.01 U Ethyl methanesulfonate N/A N/A N/A 0.01 U Ethyl parathion N/A N/A N/A 0.01 U Famphur N/A N/A N/A 0.01 U Fluoranthene NV NV NV 0.01 U 0.01 U U U Fluorene E E E U 0.01 U U U Hexachlorobenzene E E E U 0.01 U U U Hexachlorobutadiene E E E U 0.01 U U U Hexachlorocyclopentadiene E E E U 0.01 U U U Hexachloroethane E E E U 0.01 U U Hexachloropropene N/A N/A N/A 0.01 U Indeno(1,2,3cd)pyrene NV NV NV 0.01 U 0.01 U U U Isodrin N/A N/A N/A 0.01 U Isophorone NV NV NV 0.01 U 0.01 U U U Isosafrole N/A N/A N/A 0.01 U Kepone N/A N/A N/A 0.1 U Methapyrilene N/A N/A N/A 0.1 U Methyl methanesulfonate N/A N/A N/A 0.01 U Methyl parathion NV NV NV 0.01 U Naphthalene E E E U 0.01 U U U Nitrobenzene E E E U 0.01 U U U NNitrosodiethylamine N/A N/A N/A 0.01 U NNitrosodimethylamine N/A N/A N/A U U NNitrosodinbutylamine N/A N/A N/A 0.01 U NNitrosodinpropylamine NV NV NV 0.01 U 0.01 U U U NNitrosodiphenylamine NV NV NV 0.01 U 0.01 U U U NNitrosomethylethylamine N/A N/A N/A 0.01 U NNitrosopiperidine N/A N/A N/A 0.01 U NNitrosopyrrolidine N/A N/A N/A 0.01 U Pentachlorobenzene E E E U Pentachloronitrobenzene E E E U Pentachlorophenol NV NV NV U U 0.02 U 0.02 U Phenacetin N/A N/A N/A 0.05 U Phenanthrene E E E U 0.01 U U U Phenol NV NV NV 0.01 U 0.01 U U U Phorate N/A N/A N/A 0.01 U pphenylenediamine N/A N/A N/A 0.01 U Pronamide N/A N/A N/A 0.01 U Memo32 T2 T4 T6 6/7/2018

62 Table 2 Page 4 of 10 Portion of IU G Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s G G G G G G G G G G MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 M10004 M20217 H W CA123 M20522 MW04040 GW SSH14004 GW SSH1593 GW SSH /18/1998 8/2/ /19/2002 2/5/2004 2/5/2004 1/20/ /7/ /12/ /3/ /7/2016 Criteria Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A Pyrene E E E U 0.01 U U U Pyridine E E E U Safrole N/A N/A N/A 0.01 U Thionazin (O,OdiethylO2pyrazinyl phosphorothioate) N/A N/A N/A U Metals Aluminum 0.05 NR NR NR 42.2 a 14.6 a 0.05 U U 0.05 U Aluminum (dissolved) 0.05 NR NR NR 0.05 U 0.05 U U Antimony NR NR NR 0.05 U 0.05 U U U 0.05 U Antimony (dissolved) NR NR NR 0.05 U 0.05 U U Arsenic 0.01 NR NR NR a a 0.01 U U J Arsenic (dissolved) 0.01 NR NR NR U J U Barium 2 N/A N/A N/A U 0.10 U Barium (dissolved) 2 NR NR NR U Beryllium NR NR NR U U U U U Beryllium (dissolved) NR NR NR U U U Cadmium NR NR NR U J U U U Cadmium (dissolved) NR NR NR U U U Calcium NR NR NR Calcium (dissolved) NR NR NR Chromium NR NR NR U U U Chromium (dissolved) NR NR NR U U U Chromium III (trivalent) 0.1 N/A N/A N/A U Chromium VI (hexavalent) 0.1 NR NR NR 0.01 U U Chromium VI (hexavalent) (dissolved) 0.1 NR NR NR 0.02 U Cobalt NR NR NR 0.01 U 0.01 U U Cobalt (dissolved) NR NR NR 0.01 U U Copper 1 NR NR NR U U 0.01 U Copper (dissolved) 1 NR NR NR 0.01 U 0.01 U U Cyanide (total) E E E U Iron 0.3 NR NR NR 82.6 a 7.5 a 7.0 J a Iron (dissolved) 0.3 NR NR NR 4.47 J a 6.5 a Lead N/A N/A N/A a a U U U Lead (dissolved) NR NR NR U J a U Magnesium 330 NR NR NR Magnesium (dissolved) 330 NR NR NR 21.3 Manganese 0.05 NR NR NR 2.91 a 1.07 a 0.71 a 0.74 a a Manganese (dissolved) 0.05 NR NR NR 1.27 a 0.58 a 0.78 a Mercury E E E U U U Mercury (dissolved) E E E U U Nickel NR NR NR a a U U 0.02 U Nickel (dissolved) NR NR NR 0.02 U 0.02 U U Potassium NR NR NR 8.3 Potassium (dissolved) NR NR NR 8.7 Selenium 0.05 NR NR NR UJ U U Selenium (dissolved) 0.05 NR NR NR UJ U Silver 0.1 NR NR NR 0.01 U U R Silver (dissolved) 0.1 NR NR NR 0.01 U U Sodium 230 NR NR NR J Sodium (dissolved) 230 NR NR NR 23.2 Thallium NR NR NR U U U Thallium (dissolved) NR NR NR U U Tin NR NR NR Tin (dissolved) NR NR NR 0.05 U Vanadium NR NR NR a a 0.02 U U 0.01 U Vanadium (dissolved) NR NR NR 0.01 U J a U Zinc 5 NR NR NR U U 0.01 U Zinc (dissolved) 5 NR NR NR 0.01 U J U PCBs Aroclor1016 (PCB1016) 3.10E E E U U U U Aroclor1221 (PCB1221) 3.10E E E U U U U Aroclor1232 (PCB1232) 3.10E E E U U U U Aroclor1242 (PCB1242) 3.10E E E U U U U Aroclor1248 (PCB1248) 3.10E E E U U U U Aroclor1254 (PCB1254) 3.10E E E U U U U Aroclor1260 (PCB1260) 3.10E E E U U U U Memo32 T2 T4 T6 6/7/2018

63 Table 2 Page 5 of 10 Portion of IU G Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s G G G G G G G G G G MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 MW04040 M10004 M20217 H W CA123 M20522 MW04040 GW SSH14004 GW SSH1593 GW SSH /18/1998 8/2/ /19/2002 2/5/2004 2/5/2004 1/20/ /7/ /12/ /3/ /7/2016 Criteria Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A Total PCBs E E E U U U U Petrl Prod Ethylene glycol NV NV NV 10 U 25 U Propylene glycol NV NV NV 10 U 25 U Wet Alkalinity, total (as CaCO3) Ammonia E E E Ammonia, field 1.90E E E+00 AmmoniaN 1.90E E E Chloride 250 NV NV NV Cyanide (amenable) 9.00E E E02 Cyanide (total) E E E U 0.01 U U Fluoride N/A N/A N/A Formaldehyde E E E U Nitrate (as N) 10 N/A N/A N/A U 0.10 U Nitrite (as N) 1 N/A N/A N/A 0.03 U 0.10 U ph s.u ph, field s.u ph, lab s.u Sulfide 0.15 J Temperature, field Deg C 13.4 Total kjeldahl nitrogen (TKN) 4.7 Total organic carbon (TOC) Unionized ammonia FPARAM Conductivity, field umhos/cm Dissolved oxygen (DO), field Oxidation reduction potential (ORP) millivolts ph, field s.u Temperature, field Deg C Turbidity NTU Footnotes: U Not detected at the associated reporting limit. J Estimated concentration. UJ Not detected; associated reporting limit is estimated. R Rejected b Exceedance of DRAFT 2017 Part 201 Generic Cleanup Criteria and s 9.06 b Exceedance of screening levels in the latest round of groundwater data for a given location Downgradient sampling location included in the groundwater evaluation discussion Not analyzed NV MDEQ VI screening deemed Not Volatile N/A Not analyzed in MDEQ VI screening Memo32 T2 T4 T6 6/7/2018

64 Table 2 Page 6 of 10 Portion of IU G Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s G G G G G G G G G G G G MW04040 MW04438 MW04438 MW04438 TMW04037 TMW04127 TMW04130 TMW04135 TMW04233 TMW04837 TMW04938 TMW05139 GW SSH17012 M20534 MW04438 GW SSH17011 H90131 H10201 H10200 H10202 H60020 H90134 H00151 H /17/2017 1/24/ /7/2005 5/17/ /19/2002 3/7/2003 3/7/2003 3/7/ /18/ /20/2002 1/5/ /19/2002 Criteria Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A VOAs a b c d e f 1,1,1,2Tetrachloroethane E E E02 1,1,1Trichloroethane E E E+00 1,1,2,2Tetrachloroethane E E E03 1,1,2Trichloroethane E E E06 1,1Dichloroethane E E E02 1,1Dichloroethene E E E01 1,1Dichloropropene N/A N/A N/A 1,2,3Trichlorobenzene E E E01 1,2,3Trichloropropane E E E03 1,2,4Trichlorobenzene E E E02 1,2,4Trimethylbenzene E E E01 1,2Dibromo3chloropropane (DBCP) E E E05 1,2Dibromoethane (Ethylene dibromide) E E E04 1,2Dichlorobenzene E E E+00 1,2Dichloroethane E E E03 1,2Dichloropropane E E E02 1,3,5Trimethylbenzene E E E01 1,3Dichlorobenzene E E E02 1,3Dichloropropane N/A N/A N/A 1,4Dichlorobenzene E E E02 2,2Dichloropropane N/A N/A N/A 2Butanone (Methyl ethyl ketone) (MEK) E E E+01 2Chloroethyl vinyl ether E E E+00 2Chlorotoluene E E E01 2Hexanone E E E+00 2Phenylbutane (secbutylbenzene) E E E01 4Chlorotoluene N/A N/A N/A 4Methyl2pentanone (Methyl isobutyl ketone) (MIBK) E E E+00 Acetone E E E+02 Acetonitrile E E E+00 Acrolein E E E04 Acrylonitrile E E E02 Allyl chloride N/A N/A N/A Benzene E E E02 Bromobenzene E E E01 Bromodichloromethane E E E03 Bromoform E E E01 Bromomethane (Methyl bromide) E E E02 Carbon disulfide E E E+00 Carbon tetrachloride E E E02 Chlorobenzene E E E01 Chlorobromomethane N/A N/A N/A Chloroethane E E E+00 Chloroform (Trichloromethane) E E E03 Chloromethane (Methyl chloride) E E E01 Chloroprene N/A N/A N/A cis1,2dichloroethene E E E02 cis1,3dichloropropene NR NR NR cis1,4dichloro2butene N/A N/A N/A Cyclohexane E E E+01 Cymene (pisopropyltoluene) N/A N/A N/A Dibromochloromethane E E E03 Dibromomethane E E E02 Dichlorodifluoromethane (CFC12) E E E01 Ethyl methacrylate N/A N/A N/A Ethylbenzene E E E02 Hexachlorobutadiene E E E03 Iodomethane N/A N/A N/A Isopropyl benzene E E E03 m&pxylenes N/A N/A N/A Methyl acetate N/A N/A N/A Methyl acrylonitrile N/A N/A N/A Methyl cyclohexane N/A N/A N/A Methyl methacrylate N/A N/A N/A Methyl tert butyl ether (MTBE) E E E01 Methylene chloride E E E+00 Naphthalene E E E02 NButylbenzene E E E01 NPropylbenzene E E E+00 oxylene N/A N/A N/A U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U R U U U 0.05 U 0.05 U 0.05 U 0.02 U U U U U U U 0.05 U 0.05 U 0.05 U R J J U R U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U Memo32 T2 T4 T6 6/7/2018

65 Table 2 Page 7 of 10 Portion of IU G Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s Criteria Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A Propionitrile (ethyl cyanide) N/A N/A N/A Styrene E E E01 tertbutylbenzene E E E03 Tetrachloroethene E E E02 Toluene E E E+00 trans1,2dichloroethene E E E01 trans1,3dichloropropene N/A N/A N/A trans1,4dichloro2butene N/A N/A N/A Trichloroethene E E E03 Trichlorofluoromethane (CFC11) E E E01 Trifluorotrichloroethane (CFC113) E E E+01 Vinyl acetate E E E+00 Vinyl chloride E E E02 Xylenes (total) E E E01 G G G G G G G G G G G G MW04040 MW04438 MW04438 MW04438 TMW04037 TMW04127 TMW04130 TMW04135 TMW04233 TMW04837 TMW04938 TMW05139 GW SSH17012 M20534 MW04438 GW SSH17011 H90131 H10201 H10200 H10202 H60020 H90134 H00151 H /17/2017 1/24/ /7/2005 5/17/ /19/2002 3/7/2003 3/7/2003 3/7/ /18/ /20/2002 1/5/ /19/ U U U U U U U U U U U U U U J U U U U U U U U U U U U U U U U U U U SVOAs 0,0,0Triethylphosphorothioate N/A N/A N/A 1,2,4,5Tetrachlorobenzene E E E03 1,2,4Trichlorobenzene E E E02 1,2Dichlorobenzene E E E+00 1,2Diphenylhydrazine N/A N/A N/A 1,3,5Trinitrobenzene N/A N/A N/A 1,3Dichlorobenzene E E E02 1,3Dinitrobenzene N/A N/A N/A 1,4Dichlorobenzene E E E02 1,4Naphthoquinone N/A N/A N/A 1Naphthylamine N/A N/A N/A 2,2'Oxybis(1chloropropane) (bis(2chloroisopropyl) ether) N/A N/A N/A 2,3,4,6Tetrachlorophenol N/A N/A N/A 2,3Dichlorophenol N/A N/A N/A 2,3Dimethylphenol N/A N/A N/A 2,4,5Trichlorophenol NV NV NV 2,4,6Trichlorophenol NV NV NV 2,4Dichlorophenol NV NV NV 2,4Dimethylphenol NV NV NV 2,4Dinitrophenol NV NV NV 2,4Dinitrotoluene NV NV NV 2,6Dichlorophenol N/A N/A N/A 2,6Dimethylphenol NV NV NV 2,6Dinitrotoluene N/A N/A N/A 2Acetylaminofluorene N/A N/A N/A 2Chloronaphthalene N/A N/A N/A 2Chlorophenol E E E01 2Methylnaphthalene E E E01 2Methylphenol NV NV NV 2Naphthylamine N/A N/A N/A 2Nitroaniline N/A N/A N/A 2Nitrophenol E E E03 2Toluidine N/A N/A N/A 3&4Methylphenol N/A N/A N/A 3,3'Dichlorobenzidine NV NV NV 3,3Dimethylbenzidine N/A N/A N/A 3,4Dimethylphenol NV NV NV 3,5Dimethylphenol N/A N/A N/A 3/4Chlorophenol N/A N/A N/A 3Methylcholanthrene N/A N/A N/A 3Methylphenol N/A N/A N/A 3Nitroaniline N/A N/A N/A 4,6Dinitro2methylphenol NV NV NV 4Aminobiphenyl N/A N/A N/A 4Bromophenyl phenyl ether N/A N/A N/A 4Chloro3methylphenol NV NV NV 4Chloroaniline NV NV NV 4Chlorophenyl phenyl ether N/A N/A N/A 4Dimethylaminoazobenzene N/A N/A N/A 4Methylphenol N/A N/A N/A 4Nitroaniline N/A N/A N/A 4Nitrophenol N/A N/A N/A 5Nitro2toluidine N/A N/A N/A 7,12Dimethylbenz(a)anthracene N/A N/A N/A Acenaphthene E E E+00 Acenaphthylene E E E U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U U U U U 0.01 U 0.01 U 0.01 U U U U 0.02 U 0.02 U 0.02 U U U U U U U U U U U U U U U U U U U 0.02 U 0.02 U 0.02 U U U U U U U 0.01 U 0.01 U 0.01 U 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U U U U U U U 0.02 U 0.02 U 0.02 U U U U U U U 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U U U U U U U Memo32 T2 T4 T6 6/7/2018

66 Table 2 Page 8 of 10 Portion of IU G Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s Criteria Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A Acetophenone E E E+01 Aniline NV NV NV Anthracene E E E02 Atrazine NV NV NV Benzaldehyde N/A N/A N/A Benzidine NV NV NV Benzo(a)anthracene E E E03 Benzo(a)pyrene NV NV NV Benzo(b)fluoranthene NV NV NV Benzo(g,h,i)perylene NV NV NV Benzo(k)fluoranthene NV NV NV Benzoic acid NV NV NV Benzyl alcohol NV NV NV Biphenyl (1,1Biphenyl) N/A N/A N/A bis(2chloroethoxy)ethane NV NV NV bis(2chloroethoxy)methane N/A N/A N/A bis(2chloroethyl)ether E E E02 bis(2ethylhexyl)adipate NV NV NV bis(2ethylhexyl)phthalate (DEHP) NV NV NV Butyl benzylphthalate (BBP) NV NV NV Caprolactam NV NV NV Carbazole NV NV NV Chlorobenzilate N/A N/A N/A Chrysene NV NV NV Diallate N/A N/A N/A Dibenz(a,h)anthracene NV NV NV Dibenzofuran E E E+00 Dicyclohexyl phthalate 4 NV NV NV Diethyl phthalate NV NV NV Dimethoate N/A N/A N/A Dimethyl phthalate NV NV NV Dinbutylphthalate (DBP) NV NV NV Dinoctyl phthalate (DnOP) E E E02 Dinoseb NV NV NV Diphenylamine N/A N/A N/A Disulfoton N/A N/A N/A Ethyl methanesulfonate N/A N/A N/A Ethyl parathion N/A N/A N/A Famphur N/A N/A N/A Fluoranthene NV NV NV Fluorene E E E+00 Hexachlorobenzene E E E04 Hexachlorobutadiene E E E03 Hexachlorocyclopentadiene E E E04 Hexachloroethane E E E02 Hexachloropropene N/A N/A N/A Indeno(1,2,3cd)pyrene NV NV NV Isodrin N/A N/A N/A Isophorone NV NV NV Isosafrole N/A N/A N/A Kepone N/A N/A N/A Methapyrilene N/A N/A N/A Methyl methanesulfonate N/A N/A N/A Methyl parathion NV NV NV Naphthalene E E E02 Nitrobenzene E E E01 NNitrosodiethylamine N/A N/A N/A NNitrosodimethylamine N/A N/A N/A NNitrosodinbutylamine N/A N/A N/A NNitrosodinpropylamine NV NV NV NNitrosodiphenylamine NV NV NV NNitrosomethylethylamine N/A N/A N/A NNitrosopiperidine N/A N/A N/A NNitrosopyrrolidine N/A N/A N/A Pentachlorobenzene E E E04 Pentachloronitrobenzene E E E01 Pentachlorophenol NV NV NV Phenacetin N/A N/A N/A Phenanthrene E E E04 Phenol NV NV NV Phorate N/A N/A N/A pphenylenediamine N/A N/A N/A Pronamide N/A N/A N/A G G G G G G G G G G G G MW04040 MW04438 MW04438 MW04438 TMW04037 TMW04127 TMW04130 TMW04135 TMW04233 TMW04837 TMW04938 TMW05139 GW SSH17012 M20534 MW04438 GW SSH17011 H90131 H10201 H10200 H10202 H60020 H90134 H00151 H /17/2017 1/24/ /7/2005 5/17/ /19/2002 3/7/2003 3/7/2003 3/7/ /18/ /20/2002 1/5/ /19/ U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U 0.01 U 0.01 U 0.01 U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U 0.02 U 0.02 U 0.02 U U U U U U U Memo32 T2 T4 T6 6/7/2018

67 Table 2 Page 9 of 10 Portion of IU G Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s Criteria Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A Pyrene E E E01 Pyridine E E E01 Safrole N/A N/A N/A Thionazin (O,OdiethylO2pyrazinyl phosphorothioate) N/A N/A N/A G G G G G G G G G G G G MW04040 MW04438 MW04438 MW04438 TMW04037 TMW04127 TMW04130 TMW04135 TMW04233 TMW04837 TMW04938 TMW05139 GW SSH17012 M20534 MW04438 GW SSH17011 H90131 H10201 H10200 H10202 H60020 H90134 H00151 H /17/2017 1/24/ /7/2005 5/17/ /19/2002 3/7/2003 3/7/2003 3/7/ /18/ /20/2002 1/5/ /19/ U U U Metals Aluminum 0.05 NR NR NR Aluminum (dissolved) 0.05 NR NR NR Antimony NR NR NR Antimony (dissolved) NR NR NR Arsenic 0.01 NR NR NR Arsenic (dissolved) 0.01 NR NR NR Barium 2 N/A N/A N/A Barium (dissolved) 2 NR NR NR Beryllium NR NR NR Beryllium (dissolved) NR NR NR Cadmium NR NR NR Cadmium (dissolved) NR NR NR Calcium NR NR NR Calcium (dissolved) NR NR NR Chromium NR NR NR Chromium (dissolved) NR NR NR Chromium III (trivalent) 0.1 N/A N/A N/A Chromium VI (hexavalent) 0.1 NR NR NR Chromium VI (hexavalent) (dissolved) 0.1 NR NR NR Cobalt NR NR NR Cobalt (dissolved) NR NR NR Copper 1 NR NR NR Copper (dissolved) 1 NR NR NR Cyanide (total) E E E02 Iron 0.3 NR NR NR Iron (dissolved) 0.3 NR NR NR Lead N/A N/A N/A Lead (dissolved) NR NR NR Magnesium 330 NR NR NR Magnesium (dissolved) 330 NR NR NR Manganese 0.05 NR NR NR Manganese (dissolved) 0.05 NR NR NR Mercury E E E04 Mercury (dissolved) E E E04 Nickel NR NR NR Nickel (dissolved) NR NR NR Potassium NR NR NR Potassium (dissolved) NR NR NR Selenium 0.05 NR NR NR Selenium (dissolved) 0.05 NR NR NR Silver 0.1 NR NR NR Silver (dissolved) 0.1 NR NR NR Sodium 230 NR NR NR Sodium (dissolved) 230 NR NR NR Thallium NR NR NR Thallium (dissolved) NR NR NR Tin NR NR NR Tin (dissolved) NR NR NR Vanadium NR NR NR Vanadium (dissolved) NR NR NR Zinc 5 NR NR NR Zinc (dissolved) 5 NR NR NR U U U J J J J J J U U U U U U 86.9 J 44.7 J 102 J U U U U U J U U U 7.3 a 3.3 J a 4.9 a U U U 19.6 J 11.3 J 22.2 J 0.73 J a 0.55 J a 0.77 J a U U U U U U 19.5 J 19.9 J 11.1 J J J J U U U U U U U J a U J J J PCBs Aroclor1016 (PCB1016) 3.10E E E03 Aroclor1221 (PCB1221) 3.10E E E03 Aroclor1232 (PCB1232) 3.10E E E03 Aroclor1242 (PCB1242) 3.10E E E03 Aroclor1248 (PCB1248) 3.10E E E03 Aroclor1254 (PCB1254) 3.10E E E03 Aroclor1260 (PCB1260) 3.10E E E U U U U U U U U U U U U U U U U U U U U U U U U U U U U Memo32 T2 T4 T6 6/7/2018

68 Table 2 Page 10 of 10 Portion of IU G Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s Criteria Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A Total PCBs E E E03 G G G G G G G G G G G G MW04040 MW04438 MW04438 MW04438 TMW04037 TMW04127 TMW04130 TMW04135 TMW04233 TMW04837 TMW04938 TMW05139 GW SSH17012 M20534 MW04438 GW SSH17011 H90131 H10201 H10200 H10202 H60020 H90134 H00151 H /17/2017 1/24/ /7/2005 5/17/ /19/2002 3/7/2003 3/7/2003 3/7/ /18/ /20/2002 1/5/ /19/ U U U U Petrl Prod Ethylene glycol NV NV NV Propylene glycol NV NV NV Wet Alkalinity, total (as CaCO3) Ammonia E E E+00 Ammonia, field 1.90E E E+00 AmmoniaN 1.90E E E+00 Chloride 250 NV NV NV Cyanide (amenable) 9.00E E E02 Cyanide (total) E E E02 Fluoride N/A N/A N/A Formaldehyde E E E+01 Nitrate (as N) 10 N/A N/A N/A Nitrite (as N) 1 N/A N/A N/A ph s.u ph, field s.u ph, lab s.u Sulfide Temperature, field Deg C Total kjeldahl nitrogen (TKN) Total organic carbon (TOC) Unionized ammonia J de 4.8 J de 1.6 J de 4 de a a 7.9 J a 11.6 J a FPARAM Conductivity, field umhos/cm Dissolved oxygen (DO), field Oxidation reduction potential (ORP) millivolts ph, field s.u Temperature, field Deg C Turbidity NTU a a a a 9.99 a Footnotes: U Not detected at the associated reporting limit. J Estimated concentration. UJ Not detected; associated reporting limit is estimated. R Rejected b Exceedance of DRAFT 2017 Part 201 Generic Cleanup Criteria and s 9.06 b Exceedance of screening levels in the latest round of groundwater data for a given location Downgradient sampling location included in the groundwater evaluation discussion Not analyzed NV MDEQ VI screening deemed Not Volatile N/A Not analyzed in MDEQ VI screening Memo32 T2 T4 T6 6/7/2018

69 Table 3 Page 1 of 25 IU H Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 H H H H H H H H H H H H H H MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 M20001 M20215 M40000 M80155 MW04757 M60539 MW04757 M05513 M50553 M50581 M50604 GW SSH007 GW JY251 GW SSH261 11/16/1998 7/18/ /15/2001 1/5/2003 1/29/2004 1/25/ /7/2005 8/31/2006 9/12/ /12/ /2/ /30/ /1/ /7/2012 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation Flammability and VOAs a b c d e 1,1,1,2Tetrachloroethane UJ 1,1,1Trichloroethane UJ U 1,1,2,2Tetrachloroethane UJ U 1,1,2Trichloroethane UJ U 1,1Dichloroethane UJ U 1,1Dichloroethene UJ U 1,1Dichloropropene UJ 1,2,4Trichlorobenzene ,2Dibromo3chloropropane (DBCP) R 1,2Dibromoethane (Ethylene dibromide) UJ 1,2Dichlorobenzene UJ 1,2Dichloroethane UJ U 1,2Dichloropropane UJ U 1,3Dichlorobenzene UJ 1,3Dichloropropane UJ 1,4Dichlorobenzene UJ 2,2Dichloropropane UJ 2Butanone (Methyl ethyl ketone) (MEK) R R 2Hexanone R 0.02 U 4Methyl2pentanone (Methyl isobutyl ketone) (MIBK) R R Acetone R R Acetonitrile R Acrolein R Acrylonitrile R Allyl chloride UJ Benzene UJ Bromodichloromethane UJ U Bromoform UJ U Bromomethane (Methyl bromide) UJ U Carbon disulfide UJ U Carbon tetrachloride UJ U Chlorobenzene UJ U Chlorobromomethane UJ Chloroethane UJ U Chloroform (Trichloromethane) UJ U Chloromethane (Methyl chloride) UJ U Chloroprene 0.01 UJ cis1,2dichloroethene UJ U cis1,3dichloropropene UJ U cis1,4dichloro2butene R Cyclohexane Dibromochloromethane UJ U Dibromomethane UJ Dichlorodifluoromethane (CFC12) UJ Ethyl methacrylate UJ Ethylbenzene UJ U Iodomethane UJ Isopropyl benzene m&pxylenes UJ U Methyl acetate Methyl acrylonitrile R Methyl cyclohexane Methyl methacrylate UJ Methyl tert butyl ether (MTBE) Methylene chloride UJ U Naphthalene UJ oxylene UJ U Propionitrile (ethyl cyanide) R Styrene UJ U Tetrachloroethene UJ U Toluene J U trans1,2dichloroethene UJ U trans1,3dichloropropene UJ U trans1,4dichloro2butene R Trichloroethene UJ U Trichlorofluoromethane (CFC11) UJ Trifluorotrichloroethane (CFC113) Vinyl acetate UJ Vinyl chloride UJ U Xylenes (total) Memo32 T1 T3 T5 6/7/2018

70 Table 3 Page 2 of 25 IU H Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 H H H H H H H H H H H H H H MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 M20001 M20215 M40000 M80155 MW04757 M60539 MW04757 M05513 M50553 M50581 M50604 GW SSH007 GW JY251 GW SSH261 11/16/1998 7/18/ /15/2001 1/5/2003 1/29/2004 1/25/ /7/2005 8/31/2006 9/12/ /12/ /2/ /30/ /1/ /7/2012 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation Flammability and SVOAs 0,0,0Triethylphosphorothioate 0.01 U 1,2,4,5Tetrachlorobenzene U 1,2,4Trichlorobenzene U 0.01 U 1,2Dichlorobenzene U 1,3,5Trinitrobenzene U 1,3Dichlorobenzene U 1,3Dinitrobenzene 0.01 U 1,4Dichlorobenzene U 1,4Naphthoquinone 0.01 U 1Naphthylamine 0.01 U 2,2'Oxybis(1chloropropane) (bis(2chloroisopropyl) ether) 0.01 U 0.01 U 2,2'Oxybis(2chloropropane) (bis(2chloroisopropyl) ether) 2,3,4,6Tetrachlorophenol 0.01 U 2,4,5Trichlorophenol U 0.01 U 2,4,6Trichlorophenol U 0.01 U 2,4Dichlorophenol U 0.01 U 2,4Dimethylphenol U 2,4Dinitrophenol U U 2,4Dinitrotoluene U 0.01 U 2,6Dichlorophenol 0.01 U 2,6Dinitrotoluene 0.01 U 0.01 U 2Acetylaminofluorene 0.01 U 2Chloronaphthalene U 0.01 U 2Chlorophenol U 0.01 U 2Methylnaphthalene U 0.01 U 2Methylphenol U 0.01 U 2Naphthylamine 0.01 U 2Nitroaniline U U 2Nitrophenol U 0.01 U 2Toluidine 0.01 U 3&4Methylphenol U 3,3'Dichlorobenzidine U U 3,3Dimethylbenzidine U 3Methylcholanthrene 0.01 U 3Nitroaniline U U 4,6Dinitro2methylphenol U U 4Aminobiphenyl 0.01 U 4Bromophenyl phenyl ether 0.01 U 0.01 U 4Chloro3methylphenol U 0.01 U 4Chloroaniline 0.01 U 0.01 U 4Chlorophenyl phenyl ether 0.01 U 0.01 U 4Dimethylaminoazobenzene 0.01 U 4Methylphenol Nitroaniline U U 4Nitrophenol U U 5Nitro2toluidine 0.01 U 7,12Dimethylbenz(a)anthracene 0.01 U Acenaphthene U 0.01 U Acenaphthylene U 0.01 U Acetophenone U Anthracene U 0.01 U Atrazine Benzaldehyde Benzo(a)anthracene U 0.01 U Benzo(a)pyrene U 0.01 U Benzo(b)fluoranthene U 0.01 U Benzo(g,h,i)perylene U 0.01 U Benzo(k)fluoranthene U 0.01 U Benzyl alcohol U Biphenyl (1,1Biphenyl) bis(2chloroethoxy)methane 0.01 U 0.01 U bis(2chloroethyl)ether U 0.01 U bis(2ethylhexyl)phthalate (DEHP) U 0.01 U Butyl benzylphthalate (BBP) U 0.01 U Caprolactam Carbazole U Chlorobenzilate 0.01 U Chrysene U 0.01 U Diallate 0.01 U Memo32 T1 T3 T5 6/7/2018

71 Table 3 Page 3 of 25 IU H Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 H H H H H H H H H H H H H H MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 M20001 M20215 M40000 M80155 MW04757 M60539 MW04757 M05513 M50553 M50581 M50604 GW SSH007 GW JY251 GW SSH261 11/16/1998 7/18/ /15/2001 1/5/2003 1/29/2004 1/25/ /7/2005 8/31/2006 9/12/ /12/ /2/ /30/ /1/ /7/2012 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation Flammability and Dibenz(a,h)anthracene U 0.01 U Dibenzofuran U 0.01 U Diethyl phthalate U 0.01 U Dimethoate 0.01 U Dimethyl phthalate U 0.01 U Dinbutylphthalate (DBP) U 0.01 U Dinoctyl phthalate (DnOP) U 0.01 U Dinoseb U Diphenylamine 0.01 U Disulfoton 0.01 U Ethyl methanesulfonate 0.01 U Ethyl parathion 0.01 U Famphur 0.01 U Fluoranthene U 0.01 U Fluorene U 0.01 U Hexachlorobenzene U 0.01 U Hexachlorobutadiene U 0.01 U Hexachlorocyclopentadiene U 0.01 U Hexachloroethane U 0.01 U Hexachloropropene 0.01 U Indeno(1,2,3cd)pyrene U 0.01 U Isodrin 0.01 U Isophorone U 0.01 U Isosafrole 0.01 U Kepone 0.1 U Methapyrilene 0.1 U Methyl methanesulfonate 0.01 U Methyl parathion U Naphthalene U 0.01 U Nitrobenzene U 0.01 U NNitrosodiethylamine 0.01 U NNitrosodimethylamine U NNitrosodinbutylamine 0.01 U NNitrosodinpropylamine U 0.01 U NNitrosodiphenylamine U 0.01 U NNitrosomethylethylamine 0.01 U NNitrosopiperidine 0.01 U NNitrosopyrrolidine 0.01 U Pentachlorobenzene U Pentachloronitrobenzene U Pentachlorophenol (1) U U Phenacetin 0.05 U Phenanthrene U 0.01 U Phenol U 0.01 U Phorate 0.01 U pphenylenediamine 0.01 U Pronamide 0.01 U Pyrene U 0.01 U Safrole 0.01 U Thionazin (O,OdiethylO2pyrazinyl phosphorothioate) U Metals Aluminum J b 23.3 b J b Aluminum (dissolved) U 0.05 U Antimony U 0.05 U 0.05 U Antimony (dissolved) U 0.05 U Arsenic J ab ab J Arsenic (dissolved) U J Barium (1) J Barium (dissolved) (1) Beryllium (1) U J U Beryllium (dissolved) (1) U U Cadmium (1) U J a U Cadmium (dissolved) (1) U U Calcium 137 Calcium (dissolved) 46.9 Chromium J b U U U J Chromium (dissolved) U U Chromium III (trivalent) (1) Memo32 T1 T3 T5 6/7/2018

72 Table 3 Page 4 of 25 IU H Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 H H H H H H H H H H H H H H MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 M20001 M20215 M40000 M80155 MW04757 M60539 MW04757 M05513 M50553 M50581 M50604 GW SSH007 GW JY251 GW SSH261 11/16/1998 7/18/ /15/2001 1/5/2003 1/29/2004 1/25/ /7/2005 8/31/2006 9/12/ /12/ /2/ /30/ /1/ /7/2012 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation Flammability and Chromium VI (hexavalent) U 0.05 UJ 0.05 U R U J Chromium VI (hexavalent) (dissolved) Cobalt J Cobalt (dissolved) U Copper (1) J a a 0.01 U Copper (dissolved) (1) U 0.01 U Iron b Iron (dissolved) b Lead (1) J ab ab U Lead (dissolved) (1) U U Magnesium 400 Magnesium (dissolved) 400 Manganese (1) ab 1.63 ab 1.05 b Manganese (dissolved) (1) b b Mercury UJ Mercury (dissolved) UJ Nickel (1) J b 0.02 U Nickel (dissolved) (1) U 0.02 U Potassium Potassium (dissolved) Selenium UJ Selenium (dissolved) UJ Silver U Silver (dissolved) U Sodium 230 Sodium (dissolved) 230 Thallium UJ Thallium (dissolved) U Tin 0.05 U Tin (dissolved) 0.05 U Vanadium J ab ab 0.01 U 0.01 U 0.01 U 0.01 U Vanadium (dissolved) U 0.01 U Zinc (1) J U Zinc (dissolved) (1) U 0.01 U PCBs Aroclor1016 (PCB1016) U U U Aroclor1221 (PCB1221) U U U Aroclor1232 (PCB1232) U U U Aroclor1242 (PCB1242) U U U Aroclor1248 (PCB1248) U U U Aroclor1254 (PCB1254) U U U Aroclor1260 (PCB1260) U a U Total PCBs U a U Petrl Prod Ethylene glycol Propylene glycol Wet Alkalinity, total (as CaCO3) Ammonia b Ammonia, field Ammonia, unionized Bicarbonate (as CaCO3) Chloride 250 Cyanide (amenable) U UJ U Cyanide (total) U a J a 0.01 U 0.01 a U U UJ U Fluoride 6.1 Formaldehyde U Nitrate (as N) 10 Nitrite (as N) 1 ph, lab s.u Sulfide 3.56 J Total dissolved solids (TDS) Memo32 T1 T3 T5 6/7/2018

73 Table 3 Page 5 of 25 IU H Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 H H H H H H H H H H H H H H MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 M20001 M20215 M40000 M80155 MW04757 M60539 MW04757 M05513 M50553 M50581 M50604 GW SSH007 GW JY251 GW SSH261 11/16/1998 7/18/ /15/2001 1/5/2003 1/29/2004 1/25/ /7/2005 8/31/2006 9/12/ /12/ /2/ /30/ /1/ /7/2012 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation Flammability and Total kjeldahl nitrogen (TKN) 11.1 J FPARAM Conductivity, field umhos/cm Dissolved oxygen (DO), field Oxidation reduction potential (ORP) millivolts ph, field s.u Temperature, field Deg C Turbidity NTU Footnotes: U Not detected at the associated reporting limit. J Estimated concentration. UJ Not detected; associated reporting limit is estimated. R Rejected b Exceedance of Part 201 Generic Cleanup Criteria and s dated December 31, b Exceedance of screening levels in the latest round of groundwater data for a given location Downgradient sampling location included in the groundwater evaluation discussion not analyzed (1) The GSI criteria is dependent on the ph or hardness, or both, of the receiving surface water. The estimated ph for the Saginaw River is 8 and the estimated hardness for the Saginaw River is 275 mg CaCO3/L Memo32 T1 T3 T5 6/7/2018

74 Table 3 Page 6 of 25 IU H Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 H H H H H H H H H MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW05443 MW05443 GW SSH283 GW SSH284 GW SSH270 GW SSH14007 GW SSH1592 GW SSH1711 GW SSH17016 M20004 M /16/2013 7/16/ /12/ /14/ /3/ /7/2016 5/18/ /16/1998 7/14/2000 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation Flammability and VOAs a b c d e 1,1,1,2Tetrachloroethane ,1,1Trichloroethane ,1,2,2Tetrachloroethane ,1,2Trichloroethane ,1Dichloroethane ,1Dichloroethene ,1Dichloropropene 1,2,4Trichlorobenzene ,2Dibromo3chloropropane (DBCP) ,2Dibromoethane (Ethylene dibromide) ,2Dichlorobenzene ,2Dichloroethane ,2Dichloropropane ,3Dichlorobenzene ,3Dichloropropane 1,4Dichlorobenzene ,2Dichloropropane 2Butanone (Methyl ethyl ketone) (MEK) Hexanone Methyl2pentanone (Methyl isobutyl ketone) (MIBK) Acetone Acetonitrile Acrolein Acrylonitrile Allyl chloride Benzene Bromodichloromethane Bromoform Bromomethane (Methyl bromide) Carbon disulfide Carbon tetrachloride Chlorobenzene Chlorobromomethane Chloroethane Chloroform (Trichloromethane) Chloromethane (Methyl chloride) Chloroprene cis1,2dichloroethene cis1,3dichloropropene cis1,4dichloro2butene Cyclohexane Dibromochloromethane Dibromomethane Dichlorodifluoromethane (CFC12) Ethyl methacrylate Ethylbenzene Iodomethane Isopropyl benzene m&pxylenes Methyl acetate Methyl acrylonitrile Methyl cyclohexane Methyl methacrylate Methyl tert butyl ether (MTBE) Methylene chloride Naphthalene oxylene Propionitrile (ethyl cyanide) Styrene Tetrachloroethene Toluene trans1,2dichloroethene trans1,3dichloropropene trans1,4dichloro2butene Trichloroethene Trichlorofluoromethane (CFC11) Trifluorotrichloroethane (CFC113) Vinyl acetate Vinyl chloride Xylenes (total) UJ UJ U UJ U UJ U UJ U UJ U UJ R UJ UJ UJ U UJ U UJ UJ UJ UJ R 0.02 U R 0.02 U R 0.02 U J 0.01 J R R R UJ J UJ U UJ U UJ U J U UJ U UJ U UJ UJ U UJ U UJ U 0.01 UJ UJ U UJ U R UJ U UJ UJ UJ UJ U UJ UJ U R UJ UJ U UJ UJ U R UJ U UJ U UJ UJ U UJ U R UJ U UJ UJ UJ U Memo32 T1 T3 T5 6/7/2018

75 Table 3 Page 7 of 25 IU H Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 H H H H H H H H H MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW05443 MW05443 GW SSH283 GW SSH284 GW SSH270 GW SSH14007 GW SSH1592 GW SSH1711 GW SSH17016 M20004 M /16/2013 7/16/ /12/ /14/ /3/ /7/2016 5/18/ /16/1998 7/14/2000 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation Flammability and SVOAs 0,0,0Triethylphosphorothioate 1,2,4,5Tetrachlorobenzene ,2,4Trichlorobenzene ,2Dichlorobenzene ,3,5Trinitrobenzene 1,3Dichlorobenzene ,3Dinitrobenzene 1,4Dichlorobenzene ,4Naphthoquinone 1Naphthylamine 2,2'Oxybis(1chloropropane) (bis(2chloroisopropyl) ether) 2,2'Oxybis(2chloropropane) (bis(2chloroisopropyl) ether) 2,3,4,6Tetrachlorophenol 2,4,5Trichlorophenol ,4,6Trichlorophenol ,4Dichlorophenol ,4Dimethylphenol ,4Dinitrophenol 2,4Dinitrotoluene ,6Dichlorophenol 2,6Dinitrotoluene 2Acetylaminofluorene 2Chloronaphthalene Chlorophenol Methylnaphthalene Methylphenol Naphthylamine 2Nitroaniline 2Nitrophenol Toluidine 3&4Methylphenol ,3'Dichlorobenzidine ,3Dimethylbenzidine 3Methylcholanthrene 3Nitroaniline 4,6Dinitro2methylphenol Aminobiphenyl 4Bromophenyl phenyl ether 4Chloro3methylphenol Chloroaniline 4Chlorophenyl phenyl ether 4Dimethylaminoazobenzene 4Methylphenol Nitroaniline 4Nitrophenol 5Nitro2toluidine 7,12Dimethylbenz(a)anthracene Acenaphthene Acenaphthylene Acetophenone Anthracene Atrazine Benzaldehyde Benzo(a)anthracene Benzo(a)pyrene Benzo(b)fluoranthene Benzo(g,h,i)perylene Benzo(k)fluoranthene Benzyl alcohol Biphenyl (1,1Biphenyl) bis(2chloroethoxy)methane bis(2chloroethyl)ether bis(2ethylhexyl)phthalate (DEHP) Butyl benzylphthalate (BBP) Caprolactam Carbazole Chlorobenzilate Chrysene Diallate 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U U U 0.01 U 0.01 U 0.01 U U U U U 0.01 U U U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U Memo32 T1 T3 T5 6/7/2018

76 Table 3 Page 8 of 25 IU H Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 H H H H H H H H H MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW05443 MW05443 GW SSH283 GW SSH284 GW SSH270 GW SSH14007 GW SSH1592 GW SSH1711 GW SSH17016 M20004 M /16/2013 7/16/ /12/ /14/ /3/ /7/2016 5/18/ /16/1998 7/14/2000 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation Dibenz(a,h)anthracene Dibenzofuran Diethyl phthalate Dimethoate Dimethyl phthalate Dinbutylphthalate (DBP) Dinoctyl phthalate (DnOP) Dinoseb Diphenylamine Disulfoton Ethyl methanesulfonate Ethyl parathion Famphur Fluoranthene Fluorene Hexachlorobenzene Hexachlorobutadiene Hexachlorocyclopentadiene Hexachloroethane Hexachloropropene Indeno(1,2,3cd)pyrene Isodrin Isophorone Isosafrole Kepone Methapyrilene Methyl methanesulfonate Methyl parathion Naphthalene Nitrobenzene NNitrosodiethylamine NNitrosodimethylamine NNitrosodinbutylamine NNitrosodinpropylamine NNitrosodiphenylamine NNitrosomethylethylamine NNitrosopiperidine NNitrosopyrrolidine Pentachlorobenzene Pentachloronitrobenzene Pentachlorophenol (1) Phenacetin Phenanthrene Phenol Phorate pphenylenediamine Pronamide Pyrene Safrole Thionazin (O,OdiethylO2pyrazinyl phosphorothioate) Flammability and 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.1 U 0.1 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.05 U U U 0.05 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U Metals Aluminum 0.05 Aluminum (dissolved) 0.05 Antimony Antimony (dissolved) Arsenic Arsenic (dissolved) Barium (1) Barium (dissolved) (1) Beryllium (1) Beryllium (dissolved) (1) Cadmium (1) Cadmium (dissolved) (1) Calcium Calcium (dissolved) Chromium 0.1 Chromium (dissolved) 0.1 Chromium III (trivalent) (1) J b 11.4 b 0.06 b J 0.05 U 0.05 U 0.05 U 0.05 U J ab ab ab U U U U U U U U J b U U Memo32 T1 T3 T5 6/7/2018

77 Table 3 Page 9 of 25 IU H Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 H H H H H H H H H MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW05443 MW05443 GW SSH283 GW SSH284 GW SSH270 GW SSH14007 GW SSH1592 GW SSH1711 GW SSH17016 M20004 M /16/2013 7/16/ /12/ /14/ /3/ /7/2016 5/18/ /16/1998 7/14/2000 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation Chromium VI (hexavalent) Chromium VI (hexavalent) (dissolved) Cobalt Cobalt (dissolved) Copper (1) Copper (dissolved) (1) Iron 0.3 Iron (dissolved) 0.3 Lead (1) Lead (dissolved) (1) Magnesium 400 Magnesium (dissolved) 400 Manganese (1) Manganese (dissolved) (1) Mercury Mercury (dissolved) Nickel (1) Nickel (dissolved) (1) Potassium Potassium (dissolved) Selenium Selenium (dissolved) Silver Silver (dissolved) Sodium 230 Sodium (dissolved) 230 Thallium Thallium (dissolved) Tin Tin (dissolved) Vanadium Vanadium (dissolved) Zinc (1) Zinc (dissolved) (1) Flammability and 0.01 U J 0.01 U J a a U 89.3 b J ab b U U 1.87 ab b b UJ UJ J ab UJ UJ 0.01 U 0.01 U UJ U 0.05 U 0.05 U J ab ab 0.01 b 0.01 U J a U 0.01 U PCBs Aroclor1016 (PCB1016) Aroclor1221 (PCB1221) Aroclor1232 (PCB1232) Aroclor1242 (PCB1242) Aroclor1248 (PCB1248) Aroclor1254 (PCB1254) Aroclor1260 (PCB1260) Total PCBs U U U U U U U U U U U U U U U U Petrl Prod Ethylene glycol Propylene glycol Wet Alkalinity, total (as CaCO3) Ammonia Ammonia, field Ammonia, unionized Bicarbonate (as CaCO3) Chloride 250 Cyanide (amenable) Cyanide (total) Fluoride Formaldehyde Nitrate (as N) 10 Nitrite (as N) 1 ph, lab s.u Sulfide Total dissolved solids (TDS) J 1.7 J 0.20 U U U 0.01 a 0.01 J a J 0.93 J Memo32 T1 T3 T5 6/7/2018

78 Table 3 Page 10 of 25 IU H Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 H H H H H H H H H MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW05443 MW05443 GW SSH283 GW SSH284 GW SSH270 GW SSH14007 GW SSH1592 GW SSH1711 GW SSH17016 M20004 M /16/2013 7/16/ /12/ /14/ /3/ /7/2016 5/18/ /16/1998 7/14/2000 Total kjeldahl nitrogen (TKN) Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation Flammability and 16.7 J FPARAM Conductivity, field umhos/cm Dissolved oxygen (DO), field Oxidation reduction potential (ORP) millivolts ph, field s.u Temperature, field Deg C Turbidity NTU Footnotes: U Not detected at the associated reporting limit. J Estimated concentration. UJ Not detected; associated reporting limit is estimated. R Rejected b Exceedance of Part 201 Generic Cleanup Criteria and s dated December 31, b Exceedance of screening levels in the latest round of groundwater data for a given location Downgradient sampling location included in the groundwater evaluation discussion not analyzed (1) The GSI criteria is dependent on the ph or hardness, or both, of the receiving surface water. The estimated ph for the Saginaw River is 8 and the estimated hardness for the Saginaw River is 275 mg CaCO3/L Memo32 T1 T3 T5 6/7/2018

79 Table 3 Page 11 of 25 IU H Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 H H H H H H H H H H H H H H MW05443 MW05443 MW05443 MW05443 MW05443 MW05452 MW05452 MW05452 MW15457 MW15457 MW15457 MW15457 MW15457 MW15964 M20004 W CA120 M20503 MW05443 GW SSH282 M20526 MW05452 MW05452~7/16/2013 M20002 M30200 M20501 MW15457 GW SSH275 M /29/2004 2/5/2004 1/14/ /7/2005 7/16/2013 1/21/ /8/2005 7/16/ /16/1998 7/13/2000 1/13/ /7/2005 7/15/ /30/1998 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation Flammability and VOAs a b c d e 1,1,1,2Tetrachloroethane ,1,1Trichloroethane ,1,2,2Tetrachloroethane ,1,2Trichloroethane ,1Dichloroethane ,1Dichloroethene ,1Dichloropropene 1,2,4Trichlorobenzene ,2Dibromo3chloropropane (DBCP) ,2Dibromoethane (Ethylene dibromide) ,2Dichlorobenzene ,2Dichloroethane ,2Dichloropropane ,3Dichlorobenzene ,3Dichloropropane 1,4Dichlorobenzene ,2Dichloropropane 2Butanone (Methyl ethyl ketone) (MEK) Hexanone Methyl2pentanone (Methyl isobutyl ketone) (MIBK) Acetone Acetonitrile Acrolein Acrylonitrile Allyl chloride Benzene Bromodichloromethane Bromoform Bromomethane (Methyl bromide) Carbon disulfide Carbon tetrachloride Chlorobenzene Chlorobromomethane Chloroethane Chloroform (Trichloromethane) Chloromethane (Methyl chloride) Chloroprene cis1,2dichloroethene cis1,3dichloropropene cis1,4dichloro2butene Cyclohexane Dibromochloromethane Dibromomethane Dichlorodifluoromethane (CFC12) Ethyl methacrylate Ethylbenzene Iodomethane Isopropyl benzene m&pxylenes Methyl acetate Methyl acrylonitrile Methyl cyclohexane Methyl methacrylate Methyl tert butyl ether (MTBE) Methylene chloride Naphthalene oxylene Propionitrile (ethyl cyanide) Styrene Tetrachloroethene Toluene trans1,2dichloroethene trans1,3dichloropropene trans1,4dichloro2butene Trichloroethene Trichlorofluoromethane (CFC11) Trifluorotrichloroethane (CFC113) Vinyl acetate Vinyl chloride Xylenes (total) UJ U U UJ U U U UJ U U U UJ U U U UJ U U U UJ U U UJ U U U R R U UJ U U UJ U U UJ U U U UJ U U U UJ U UJ U U UJ U UJ U U R R R 0.05 U R 0.02 U R 0.05 U R R R U R R R R R R R R R UJ U U UJ U U U UJ U U U UJ U U U UJ U U U UJ U U U UJ U U U UJ U U UJ U U UJ U U U UJ U U U UJ U U 0.01 UJ 0.01 UJ U UJ U U U UJ U U R R U U UJ U U UJ U U UJ U UJ U U UJ U U UJ UJ U UJ U U 0.01 U R R U UJ U U U UJ U U UJ U UJ U U R R U UJ U U U UJ U U U UJ U U U UJ U U U UJ U U R R U UJ U U U UJ U U UJ U U UJ U U U Memo32 T1 T3 T5 6/7/2018

80 Table 3 Page 12 of 25 IU H Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 H H H H H H H H H H H H H H MW05443 MW05443 MW05443 MW05443 MW05443 MW05452 MW05452 MW05452 MW15457 MW15457 MW15457 MW15457 MW15457 MW15964 M20004 W CA120 M20503 MW05443 GW SSH282 M20526 MW05452 MW05452~7/16/2013 M20002 M30200 M20501 MW15457 GW SSH275 M /29/2004 2/5/2004 1/14/ /7/2005 7/16/2013 1/21/ /8/2005 7/16/ /16/1998 7/13/2000 1/13/ /7/2005 7/15/ /30/1998 SVOAs Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation Flammability and 0,0,0Triethylphosphorothioate 1,2,4,5Tetrachlorobenzene ,2,4Trichlorobenzene ,2Dichlorobenzene ,3,5Trinitrobenzene 1,3Dichlorobenzene ,3Dinitrobenzene 1,4Dichlorobenzene ,4Naphthoquinone 1Naphthylamine 2,2'Oxybis(1chloropropane) (bis(2chloroisopropyl) ether) 2,2'Oxybis(2chloropropane) (bis(2chloroisopropyl) ether) 2,3,4,6Tetrachlorophenol 2,4,5Trichlorophenol ,4,6Trichlorophenol ,4Dichlorophenol ,4Dimethylphenol ,4Dinitrophenol 2,4Dinitrotoluene ,6Dichlorophenol 2,6Dinitrotoluene 2Acetylaminofluorene 2Chloronaphthalene Chlorophenol Methylnaphthalene Methylphenol Naphthylamine 2Nitroaniline 2Nitrophenol Toluidine 3&4Methylphenol ,3'Dichlorobenzidine ,3Dimethylbenzidine 3Methylcholanthrene 3Nitroaniline 4,6Dinitro2methylphenol Aminobiphenyl 4Bromophenyl phenyl ether 4Chloro3methylphenol Chloroaniline 4Chlorophenyl phenyl ether 4Dimethylaminoazobenzene 4Methylphenol Nitroaniline 4Nitrophenol 5Nitro2toluidine 7,12Dimethylbenz(a)anthracene Acenaphthene Acenaphthylene Acetophenone Anthracene Atrazine Benzaldehyde Benzo(a)anthracene Benzo(a)pyrene Benzo(b)fluoranthene Benzo(g,h,i)perylene Benzo(k)fluoranthene Benzyl alcohol Biphenyl (1,1Biphenyl) bis(2chloroethoxy)methane bis(2chloroethyl)ether bis(2ethylhexyl)phthalate (DEHP) Butyl benzylphthalate (BBP) Caprolactam Carbazole Chlorobenzilate Chrysene Diallate 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.02 U U U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.02 U U U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U U 0.01 U 0.01 U 0.02 U U U U 0.02 U U U U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.02 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.02 U U U U 0.02 U U U U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U Memo32 T1 T3 T5 6/7/2018

81 Table 3 Page 13 of 25 IU H Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 H H H H H H H H H H H H H H MW05443 MW05443 MW05443 MW05443 MW05443 MW05452 MW05452 MW05452 MW15457 MW15457 MW15457 MW15457 MW15457 MW15964 M20004 W CA120 M20503 MW05443 GW SSH282 M20526 MW05452 MW05452~7/16/2013 M20002 M30200 M20501 MW15457 GW SSH275 M /29/2004 2/5/2004 1/14/ /7/2005 7/16/2013 1/21/ /8/2005 7/16/ /16/1998 7/13/2000 1/13/ /7/2005 7/15/ /30/1998 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation Dibenz(a,h)anthracene Dibenzofuran Diethyl phthalate Dimethoate Dimethyl phthalate Dinbutylphthalate (DBP) Dinoctyl phthalate (DnOP) Dinoseb Diphenylamine Disulfoton Ethyl methanesulfonate Ethyl parathion Famphur Fluoranthene Fluorene Hexachlorobenzene Hexachlorobutadiene Hexachlorocyclopentadiene Hexachloroethane Hexachloropropene Indeno(1,2,3cd)pyrene Isodrin Isophorone Isosafrole Kepone Methapyrilene Methyl methanesulfonate Methyl parathion Naphthalene Nitrobenzene NNitrosodiethylamine NNitrosodimethylamine NNitrosodinbutylamine NNitrosodinpropylamine NNitrosodiphenylamine NNitrosomethylethylamine NNitrosopiperidine NNitrosopyrrolidine Pentachlorobenzene Pentachloronitrobenzene Pentachlorophenol (1) Phenacetin Phenanthrene Phenol Phorate pphenylenediamine Pronamide Pyrene Safrole Thionazin (O,OdiethylO2pyrazinyl phosphorothioate) Flammability and U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.1 U 0.1 U 0.1 U 0.1 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.05 U 0.05 U 0.02 U U U U 0.05 U 0.05 U U 0.01 U 0.01 U 0.01 U U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 UJ 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U U Metals Aluminum 0.05 Aluminum (dissolved) 0.05 Antimony Antimony (dissolved) Arsenic Arsenic (dissolved) Barium (1) Barium (dissolved) (1) Beryllium (1) Beryllium (dissolved) (1) Cadmium (1) Cadmium (dissolved) (1) Calcium Calcium (dissolved) Chromium 0.1 Chromium (dissolved) 0.1 Chromium III (trivalent) (1) b J b 103 J b 17.3 b 0.05 U 36.5 b U b 0.05 U 0.05 U U 0.05 UJ 0.05 U 0.05 U J b 0.05 U U 0.05 U 0.05 U 0.05 U ab ab U ab ab U J U U U b U U U U U U U U U U U U U U U U U U U J b b U U U U U Memo32 T1 T3 T5 6/7/2018

82 Table 3 Page 14 of 25 IU H Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 H H H H H H H H H H H H H H MW05443 MW05443 MW05443 MW05443 MW05443 MW05452 MW05452 MW05452 MW15457 MW15457 MW15457 MW15457 MW15457 MW15964 M20004 W CA120 M20503 MW05443 GW SSH282 M20526 MW05452 MW05452~7/16/2013 M20002 M30200 M20501 MW15457 GW SSH275 M /29/2004 2/5/2004 1/14/ /7/2005 7/16/2013 1/21/ /8/2005 7/16/ /16/1998 7/13/2000 1/13/ /7/2005 7/15/ /30/1998 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation Chromium VI (hexavalent) Chromium VI (hexavalent) (dissolved) Cobalt Cobalt (dissolved) Copper (1) Copper (dissolved) (1) Iron 0.3 Iron (dissolved) 0.3 Lead (1) Lead (dissolved) (1) Magnesium 400 Magnesium (dissolved) 400 Manganese (1) Manganese (dissolved) (1) Mercury Mercury (dissolved) Nickel (1) Nickel (dissolved) (1) Potassium Potassium (dissolved) Selenium Selenium (dissolved) Silver Silver (dissolved) Sodium 230 Sodium (dissolved) 230 Thallium Thallium (dissolved) Tin Tin (dissolved) Vanadium Vanadium (dissolved) Zinc (1) Zinc (dissolved) (1) Flammability and 0.01 U 0.02 a U J b U 0.01 U 0.01 U U 0.01 U J a a 0.01 U a U U 0.01 U 26.3 J b 158 b 49.9 b 22.3 b b U U J ab ab U b U U U U b b 3.35 ab J b b b 0.57 b b J b b U UJ U U UJ U U 0.02 U 0.21 J ab U U 0.02 U U U UJ U U UJ U R 0.01 U 0.01 U U 0.01 U 0.01 U 220 J 240 b U UJ U U U U 0.05 U 0.05 U 0.05 U 0.05 U U 0.01 U J ab ab 0.01 U ab U 0.01 U 0.01 U 0.01 U U 0.01 U J a J J U 0.01 U 0.01 U 0.01 U PCBs Aroclor1016 (PCB1016) Aroclor1221 (PCB1221) Aroclor1232 (PCB1232) Aroclor1242 (PCB1242) Aroclor1248 (PCB1248) Aroclor1254 (PCB1254) Aroclor1260 (PCB1260) Total PCBs UJ U U U UJ U U U UJ U U U UJ U U U UJ U U U UJ U U U UJ U U U UJ U U U Petrl Prod Ethylene glycol Propylene glycol U 25 U Wet Alkalinity, total (as CaCO3) Ammonia Ammonia, field Ammonia, unionized Bicarbonate (as CaCO3) Chloride 250 Cyanide (amenable) Cyanide (total) Fluoride Formaldehyde Nitrate (as N) 10 Nitrite (as N) 1 ph, lab s.u Sulfide Total dissolved solids (TDS) J b U 0.01 U 0.01 U 0.01 U 0.05 U 0.10 U 0.50 U a 0.05 UJ 0.05 U Memo32 T1 T3 T5 6/7/2018

83 Table 3 Page 15 of 25 IU H Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 H H H H H H H H H H H H H H MW05443 MW05443 MW05443 MW05443 MW05443 MW05452 MW05452 MW05452 MW15457 MW15457 MW15457 MW15457 MW15457 MW15964 M20004 W CA120 M20503 MW05443 GW SSH282 M20526 MW05452 MW05452~7/16/2013 M20002 M30200 M20501 MW15457 GW SSH275 M /29/2004 2/5/2004 1/14/ /7/2005 7/16/2013 1/21/ /8/2005 7/16/ /16/1998 7/13/2000 1/13/ /7/2005 7/15/ /30/1998 Total kjeldahl nitrogen (TKN) Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation Flammability and 5.8 J 1.9 FPARAM Conductivity, field umhos/cm Dissolved oxygen (DO), field Oxidation reduction potential (ORP) millivolts ph, field s.u Temperature, field Deg C Turbidity NTU b a 9.58 a 9.89 a Footnotes: U Not detected at the associated reporting limit. J Estimated concentration. UJ Not detected; associated reporting limit is estimated. R Rejected b Exceedance of Part 201 Generic Cleanup Criteria and s dated December 31, b Exceedance of screening levels in the latest round of groundwater data for a given location Downgradient sampling location included in the groundwater evaluation discussion not analyzed (1) The GSI criteria is dependent on the ph or hardness, or both, of the receiving surface water. The estimated ph for the Saginaw River is 8 and the estimated hardness for the Saginaw River is 275 mg CaCO3/L Memo32 T1 T3 T5 6/7/2018

84 Table 3 Page 16 of 25 IU H Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation Flammability and VOAs a b c d e H H H H H H H H H H H H H H H H H H MW15964 MW15964 MW16357 MW16357 MW16357 MW16357 MW17661 MW17661 MW17661 MW17661 MW17661 MW17661 MW17661 TMW04356 TMW05447 TMW05447 TMW05447A TMW05454 M10215 M20502 M10003 M20213 M20214Q M20504 M30022 M30047 M10206 H50134 M50134 M20506 MW17661 H70110 H60016 H60021Q H80141 H /26/2000 1/14/ /17/1998 7/18/2000 7/18/2000 1/14/ /1/ /28/1998 7/14/ /17/ /17/2002 1/17/ /7/ /20/ /18/ /18/ /18/ /17/2001 (Duplicate) (Duplicate) 1,1,1,2Tetrachloroethane ,1,1Trichloroethane ,1,2,2Tetrachloroethane ,1,2Trichloroethane ,1Dichloroethane ,1Dichloroethene ,1Dichloropropene 1,2,4Trichlorobenzene ,2Dibromo3chloropropane (DBCP) ,2Dibromoethane (Ethylene dibromide) ,2Dichlorobenzene ,2Dichloroethane ,2Dichloropropane ,3Dichlorobenzene ,3Dichloropropane 1,4Dichlorobenzene ,2Dichloropropane 2Butanone (Methyl ethyl ketone) (MEK) Hexanone Methyl2pentanone (Methyl isobutyl ketone) (MIBK) Acetone Acetonitrile Acrolein Acrylonitrile Allyl chloride Benzene Bromodichloromethane Bromoform Bromomethane (Methyl bromide) Carbon disulfide Carbon tetrachloride Chlorobenzene Chlorobromomethane Chloroethane Chloroform (Trichloromethane) Chloromethane (Methyl chloride) Chloroprene cis1,2dichloroethene cis1,3dichloropropene cis1,4dichloro2butene Cyclohexane Dibromochloromethane Dibromomethane Dichlorodifluoromethane (CFC12) Ethyl methacrylate Ethylbenzene Iodomethane Isopropyl benzene m&pxylenes Methyl acetate Methyl acrylonitrile Methyl cyclohexane Methyl methacrylate Methyl tert butyl ether (MTBE) Methylene chloride Naphthalene oxylene Propionitrile (ethyl cyanide) Styrene Tetrachloroethene Toluene trans1,2dichloroethene trans1,3dichloropropene trans1,4dichloro2butene Trichloroethene Trichlorofluoromethane (CFC11) Trifluorotrichloroethane (CFC113) Vinyl acetate Vinyl chloride Xylenes (total) UJ U U UJ U U U U U UJ U U U U U UJ U U U U U UJ U U U U U UJ U U U U UJ U R U UJ U UJ U U UJ U U U U U UJ U U U U UJ U UJ U UJ U UJ U R R R R R 0.02 U 0.02 U 0.02 UJ 0.02 U 0.02 U 0.02 U 0.02 U R R R R R 0.02 U R R R R R R R R R R R R UJ U U UJ U U U U U UJ U U U U U UJ U U U U U UJ U U U U U UJ U U U U U UJ U U U U U UJ U U U U UJ U U UJ U U U U U UJ U U U U U UJ U U U U 0.01 UJ 0.01 U U UJ U U U U U UJ U U U U R R U UJ U U U U UJ U UJ UJ UJ UJ U UJ U U U U UJ U U UJ U U U U R UJ UJ U U UJ U U U U UJ U U UJ U U U U R R U UJ U U U U U UJ U U U U UJ U U U U U UJ U U U U U UJ U U U U R R U UJ U U U U UJ U UJ U U UJ U U U U Memo32 T1 T3 T5 6/7/2018

85 Table 3 Page 17 of 25 IU H Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation Flammability and H H H H H H H H H H H H H H H H H H MW15964 MW15964 MW16357 MW16357 MW16357 MW16357 MW17661 MW17661 MW17661 MW17661 MW17661 MW17661 MW17661 TMW04356 TMW05447 TMW05447 TMW05447A TMW05454 M10215 M20502 M10003 M20213 M20214Q M20504 M30022 M30047 M10206 H50134 M50134 M20506 MW17661 H70110 H60016 H60021Q H80141 H /26/2000 1/14/ /17/1998 7/18/2000 7/18/2000 1/14/ /1/ /28/1998 7/14/ /17/ /17/2002 1/17/ /7/ /20/ /18/ /18/ /18/ /17/2001 (Duplicate) (Duplicate) SVOAs 0,0,0Triethylphosphorothioate 1,2,4,5Tetrachlorobenzene ,2,4Trichlorobenzene ,2Dichlorobenzene ,3,5Trinitrobenzene 1,3Dichlorobenzene ,3Dinitrobenzene 1,4Dichlorobenzene ,4Naphthoquinone 1Naphthylamine 2,2'Oxybis(1chloropropane) (bis(2chloroisopropyl) ether) 2,2'Oxybis(2chloropropane) (bis(2chloroisopropyl) ether) 2,3,4,6Tetrachlorophenol 2,4,5Trichlorophenol ,4,6Trichlorophenol ,4Dichlorophenol ,4Dimethylphenol ,4Dinitrophenol 2,4Dinitrotoluene ,6Dichlorophenol 2,6Dinitrotoluene 2Acetylaminofluorene 2Chloronaphthalene Chlorophenol Methylnaphthalene Methylphenol Naphthylamine 2Nitroaniline 2Nitrophenol Toluidine 3&4Methylphenol ,3'Dichlorobenzidine ,3Dimethylbenzidine 3Methylcholanthrene 3Nitroaniline 4,6Dinitro2methylphenol Aminobiphenyl 4Bromophenyl phenyl ether 4Chloro3methylphenol Chloroaniline 4Chlorophenyl phenyl ether 4Dimethylaminoazobenzene 4Methylphenol Nitroaniline 4Nitrophenol 5Nitro2toluidine 7,12Dimethylbenz(a)anthracene Acenaphthene Acenaphthylene Acetophenone Anthracene Atrazine Benzaldehyde Benzo(a)anthracene Benzo(a)pyrene Benzo(b)fluoranthene Benzo(g,h,i)perylene Benzo(k)fluoranthene Benzyl alcohol Biphenyl (1,1Biphenyl) bis(2chloroethoxy)methane bis(2chloroethyl)ether bis(2ethylhexyl)phthalate (DEHP) Butyl benzylphthalate (BBP) Caprolactam Carbazole Chlorobenzilate Chrysene Diallate 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U U U UJ 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U UJ U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U U U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 UJ 0.01 U U U U U U U U U U 0.01 U 0.01 U U U U U U U U U U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 UJ U U U U U U U U U U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U Memo32 T1 T3 T5 6/7/2018

86 Table 3 Page 18 of 25 IU H Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation Dibenz(a,h)anthracene Dibenzofuran Diethyl phthalate Dimethoate Dimethyl phthalate Dinbutylphthalate (DBP) Dinoctyl phthalate (DnOP) Dinoseb Diphenylamine Disulfoton Ethyl methanesulfonate Ethyl parathion Famphur Fluoranthene Fluorene Hexachlorobenzene Hexachlorobutadiene Hexachlorocyclopentadiene Hexachloroethane Hexachloropropene Indeno(1,2,3cd)pyrene Isodrin Isophorone Isosafrole Kepone Methapyrilene Methyl methanesulfonate Methyl parathion Naphthalene Nitrobenzene NNitrosodiethylamine NNitrosodimethylamine NNitrosodinbutylamine NNitrosodinpropylamine NNitrosodiphenylamine NNitrosomethylethylamine NNitrosopiperidine NNitrosopyrrolidine Pentachlorobenzene Pentachloronitrobenzene Pentachlorophenol (1) Phenacetin Phenanthrene Phenol Phorate pphenylenediamine Pronamide Pyrene Safrole Thionazin (O,OdiethylO2pyrazinyl phosphorothioate) Metals Flammability and H H H H H H H H H H H H H H H H H H MW15964 MW15964 MW16357 MW16357 MW16357 MW16357 MW17661 MW17661 MW17661 MW17661 MW17661 MW17661 MW17661 TMW04356 TMW05447 TMW05447 TMW05447A TMW05454 M10215 M20502 M10003 M20213 M20214Q M20504 M30022 M30047 M10206 H50134 M50134 M20506 MW17661 H70110 H60016 H60021Q H80141 H /26/2000 1/14/ /17/1998 7/18/2000 7/18/2000 1/14/ /1/ /28/1998 7/14/ /17/ /17/2002 1/17/ /7/ /20/ /18/ /18/ /18/ /17/2001 (Duplicate) (Duplicate) 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U UJ 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U U UJ 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 UJ 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.1 U 0.1 U 0.1 U 0.1 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.05 U 0.05 U U U U U U U U 0.05 U 0.05 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U U U Aluminum 0.05 Aluminum (dissolved) 0.05 Antimony Antimony (dissolved) Arsenic Arsenic (dissolved) Barium (1) Barium (dissolved) (1) Beryllium (1) Beryllium (dissolved) (1) Cadmium (1) Cadmium (dissolved) (1) Calcium Calcium (dissolved) Chromium 0.1 Chromium (dissolved) 0.1 Chromium III (trivalent) (1) b J b 1.51 b 5.39 b 5.86 b 0.05 U 29.9 b 2.04 b b 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 UJ 0.05 U 0.05 U 0.05 U 0.05 UJ 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U U U J ab J J J U J J U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U b b 1.55 b 0.01 U U U U U U Memo32 T1 T3 T5 6/7/2018

87 Table 3 Page 19 of 25 IU H Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation Chromium VI (hexavalent) Chromium VI (hexavalent) (dissolved) Cobalt Cobalt (dissolved) Copper (1) Copper (dissolved) (1) Iron 0.3 Iron (dissolved) 0.3 Lead (1) Lead (dissolved) (1) Magnesium 400 Magnesium (dissolved) 400 Manganese (1) Manganese (dissolved) (1) Mercury Mercury (dissolved) Nickel (1) Nickel (dissolved) (1) Potassium Potassium (dissolved) Selenium Selenium (dissolved) Silver Silver (dissolved) Sodium 230 Sodium (dissolved) 230 Thallium Thallium (dissolved) Tin Tin (dissolved) Vanadium Vanadium (dissolved) Zinc (1) Zinc (dissolved) (1) PCBs Flammability and H H H H H H H H H H H H H H H H H H MW15964 MW15964 MW16357 MW16357 MW16357 MW16357 MW17661 MW17661 MW17661 MW17661 MW17661 MW17661 MW17661 TMW04356 TMW05447 TMW05447 TMW05447A TMW05454 M10215 M20502 M10003 M20213 M20214Q M20504 M30022 M30047 M10206 H50134 M50134 M20506 MW17661 H70110 H60016 H60021Q H80141 H /26/2000 1/14/ /17/1998 7/18/2000 7/18/2000 1/14/ /1/ /28/1998 7/14/ /17/ /17/2002 1/17/ /7/ /20/ /18/ /18/ /18/ /17/2001 (Duplicate) (Duplicate) 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U a 0.01 U a a 0.01 U a U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 7.71 b 44.4 b 3.25 J b b U U b b U ab U J U U U U J b b b b b b b b b b b b b b b U U U U U 0.02 U U ab ab 0.02 U 0.02 U 0.02 U 0.02 U b UJ UJ UJ UJ 0.01 U 0.01 U 0.01 U 0.01 U U U U U 0.05 U 0.05 U 0.05 U 0.05 U b 0.01 U 0.01 U b b 0.01 U ab J b J b 0.01 U 0.01 U 0.01 U J 0.01 U 0.01 U U U J 0.01 U 0.01 U J J 0.01 U 0.01 U Aroclor1016 (PCB1016) Aroclor1221 (PCB1221) Aroclor1232 (PCB1232) Aroclor1242 (PCB1242) Aroclor1248 (PCB1248) Aroclor1254 (PCB1254) Aroclor1260 (PCB1260) Total PCBs U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U Petrl Prod Ethylene glycol Propylene glycol Wet Alkalinity, total (as CaCO3) Ammonia Ammonia, field Ammonia, unionized Bicarbonate (as CaCO3) Chloride 250 Cyanide (amenable) Cyanide (total) Fluoride Formaldehyde Nitrate (as N) 10 Nitrite (as N) 1 ph, lab s.u Sulfide Total dissolved solids (TDS) U 0.05 U U 2 U 2 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.05 U 0.05 U 0.05 UJ 0.05 U 0.05 U Memo32 T1 T3 T5 6/7/2018

88 Table 3 Page 20 of 25 IU H Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 Total kjeldahl nitrogen (TKN) Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation Flammability and H H H H H H H H H H H H H H H H H H MW15964 MW15964 MW16357 MW16357 MW16357 MW16357 MW17661 MW17661 MW17661 MW17661 MW17661 MW17661 MW17661 TMW04356 TMW05447 TMW05447 TMW05447A TMW05454 M10215 M20502 M10003 M20213 M20214Q M20504 M30022 M30047 M10206 H50134 M50134 M20506 MW17661 H70110 H60016 H60021Q H80141 H /26/2000 1/14/ /17/1998 7/18/2000 7/18/2000 1/14/ /1/ /28/1998 7/14/ /17/ /17/2002 1/17/ /7/ /20/ /18/ /18/ /18/ /17/2001 (Duplicate) (Duplicate) FPARAM Conductivity, field umhos/cm Dissolved oxygen (DO), field Oxidation reduction potential (ORP) millivolts ph, field s.u Temperature, field Deg C Turbidity NTU Footnotes: U Not detected at the associated reporting limit. J Estimated concentration. UJ Not detected; associated reporting limit is estimated. R Rejected b Exceedance of Part 201 Generic Cleanup Criteria and s dated December 31, b Exceedance of screening levels in the latest round of groundwater data for a given location Downgradient sampling location included in the groundwater evaluation discussion not analyzed (1) The GSI criteria is dependent on the ph or hardness, or both, of the receiving surface water. The estimated ph for the Saginaw River is 8 and the estimated hardness for the Saginaw River is 275 mg CaCO3/L b b b b 10.9 b b Memo32 T1 T3 T5 6/7/2018

89 Table 3 Page 21 of 25 IU H Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 H H H H H TMW05457 TMW06047 TMW06047B TMW06056A TMW06552 H50141 H60018 H70111 H70105 M /17/ /18/ /20/ /19/2002 1/24/2005 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation Flammability and VOAs a b c d e 1,1,1,2Tetrachloroethane ,1,1Trichloroethane ,1,2,2Tetrachloroethane ,1,2Trichloroethane ,1Dichloroethane ,1Dichloroethene ,1Dichloropropene 1,2,4Trichlorobenzene ,2Dibromo3chloropropane (DBCP) ,2Dibromoethane (Ethylene dibromide) ,2Dichlorobenzene ,2Dichloroethane ,2Dichloropropane ,3Dichlorobenzene ,3Dichloropropane 1,4Dichlorobenzene ,2Dichloropropane 2Butanone (Methyl ethyl ketone) (MEK) Hexanone Methyl2pentanone (Methyl isobutyl ketone) (MIBK) Acetone Acetonitrile Acrolein Acrylonitrile Allyl chloride Benzene Bromodichloromethane Bromoform Bromomethane (Methyl bromide) Carbon disulfide Carbon tetrachloride Chlorobenzene Chlorobromomethane Chloroethane Chloroform (Trichloromethane) Chloromethane (Methyl chloride) Chloroprene cis1,2dichloroethene cis1,3dichloropropene cis1,4dichloro2butene Cyclohexane Dibromochloromethane Dibromomethane Dichlorodifluoromethane (CFC12) Ethyl methacrylate Ethylbenzene Iodomethane Isopropyl benzene m&pxylenes Methyl acetate Methyl acrylonitrile Methyl cyclohexane Methyl methacrylate Methyl tert butyl ether (MTBE) Methylene chloride Naphthalene oxylene Propionitrile (ethyl cyanide) Styrene Tetrachloroethene Toluene trans1,2dichloroethene trans1,3dichloropropene trans1,4dichloro2butene Trichloroethene Trichlorofluoromethane (CFC11) Trifluorotrichloroethane (CFC113) Vinyl acetate Vinyl chloride Xylenes (total) Memo32 T1 T3 T5 6/7/2018

90 Table 3 Page 22 of 25 IU H Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 H H H H H TMW05457 TMW06047 TMW06047B TMW06056A TMW06552 H50141 H60018 H70111 H70105 M /17/ /18/ /20/ /19/2002 1/24/2005 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation Flammability and SVOAs 0,0,0Triethylphosphorothioate 1,2,4,5Tetrachlorobenzene ,2,4Trichlorobenzene ,2Dichlorobenzene ,3,5Trinitrobenzene 1,3Dichlorobenzene ,3Dinitrobenzene 1,4Dichlorobenzene ,4Naphthoquinone 1Naphthylamine 2,2'Oxybis(1chloropropane) (bis(2chloroisopropyl) ether) 2,2'Oxybis(2chloropropane) (bis(2chloroisopropyl) ether) 2,3,4,6Tetrachlorophenol 2,4,5Trichlorophenol ,4,6Trichlorophenol ,4Dichlorophenol ,4Dimethylphenol ,4Dinitrophenol 2,4Dinitrotoluene ,6Dichlorophenol 2,6Dinitrotoluene 2Acetylaminofluorene 2Chloronaphthalene Chlorophenol Methylnaphthalene Methylphenol Naphthylamine 2Nitroaniline 2Nitrophenol Toluidine 3&4Methylphenol ,3'Dichlorobenzidine ,3Dimethylbenzidine 3Methylcholanthrene 3Nitroaniline 4,6Dinitro2methylphenol Aminobiphenyl 4Bromophenyl phenyl ether 4Chloro3methylphenol Chloroaniline 4Chlorophenyl phenyl ether 4Dimethylaminoazobenzene 4Methylphenol Nitroaniline 4Nitrophenol 5Nitro2toluidine 7,12Dimethylbenz(a)anthracene Acenaphthene Acenaphthylene Acetophenone Anthracene Atrazine Benzaldehyde Benzo(a)anthracene Benzo(a)pyrene Benzo(b)fluoranthene Benzo(g,h,i)perylene Benzo(k)fluoranthene Benzyl alcohol Biphenyl (1,1Biphenyl) bis(2chloroethoxy)methane bis(2chloroethyl)ether bis(2ethylhexyl)phthalate (DEHP) Butyl benzylphthalate (BBP) Caprolactam Carbazole Chlorobenzilate Chrysene Diallate Memo32 T1 T3 T5 6/7/2018

91 Table 3 Page 23 of 25 IU H Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 H H H H H TMW05457 TMW06047 TMW06047B TMW06056A TMW06552 H50141 H60018 H70111 H70105 M /17/ /18/ /20/ /19/2002 1/24/2005 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation Dibenz(a,h)anthracene Dibenzofuran Diethyl phthalate Dimethoate Dimethyl phthalate Dinbutylphthalate (DBP) Dinoctyl phthalate (DnOP) Dinoseb Diphenylamine Disulfoton Ethyl methanesulfonate Ethyl parathion Famphur Fluoranthene Fluorene Hexachlorobenzene Hexachlorobutadiene Hexachlorocyclopentadiene Hexachloroethane Hexachloropropene Indeno(1,2,3cd)pyrene Isodrin Isophorone Isosafrole Kepone Methapyrilene Methyl methanesulfonate Methyl parathion Naphthalene Nitrobenzene NNitrosodiethylamine NNitrosodimethylamine NNitrosodinbutylamine NNitrosodinpropylamine NNitrosodiphenylamine NNitrosomethylethylamine NNitrosopiperidine NNitrosopyrrolidine Pentachlorobenzene Pentachloronitrobenzene Pentachlorophenol (1) Phenacetin Phenanthrene Phenol Phorate pphenylenediamine Pronamide Pyrene Safrole Thionazin (O,OdiethylO2pyrazinyl phosphorothioate) Flammability and Metals Aluminum 0.05 Aluminum (dissolved) 0.05 Antimony Antimony (dissolved) Arsenic Arsenic (dissolved) Barium (1) Barium (dissolved) (1) Beryllium (1) Beryllium (dissolved) (1) Cadmium (1) Cadmium (dissolved) (1) Calcium Calcium (dissolved) Chromium 0.1 Chromium (dissolved) 0.1 Chromium III (trivalent) (1) Memo32 T1 T3 T5 6/7/2018

92 Table 3 Page 24 of 25 IU H Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 H H H H H TMW05457 TMW06047 TMW06047B TMW06056A TMW06552 H50141 H60018 H70111 H70105 M /17/ /18/ /20/ /19/2002 1/24/2005 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation Chromium VI (hexavalent) Chromium VI (hexavalent) (dissolved) Cobalt Cobalt (dissolved) Copper (1) Copper (dissolved) (1) Iron 0.3 Iron (dissolved) 0.3 Lead (1) Lead (dissolved) (1) Magnesium 400 Magnesium (dissolved) 400 Manganese (1) Manganese (dissolved) (1) Mercury Mercury (dissolved) Nickel (1) Nickel (dissolved) (1) Potassium Potassium (dissolved) Selenium Selenium (dissolved) Silver Silver (dissolved) Sodium 230 Sodium (dissolved) 230 Thallium Thallium (dissolved) Tin Tin (dissolved) Vanadium Vanadium (dissolved) Zinc (1) Zinc (dissolved) (1) Flammability and PCBs Aroclor1016 (PCB1016) Aroclor1221 (PCB1221) Aroclor1232 (PCB1232) Aroclor1242 (PCB1242) Aroclor1248 (PCB1248) Aroclor1254 (PCB1254) Aroclor1260 (PCB1260) Total PCBs Petrl Prod Ethylene glycol Propylene glycol Wet Alkalinity, total (as CaCO3) Ammonia Ammonia, field Ammonia, unionized Bicarbonate (as CaCO3) Chloride 250 Cyanide (amenable) Cyanide (total) Fluoride Formaldehyde Nitrate (as N) 10 Nitrite (as N) 1 ph, lab s.u Sulfide Total dissolved solids (TDS) b b Memo32 T1 T3 T5 6/7/2018

93 Table 3 Page 25 of 25 IU H Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 H H H H H TMW05457 TMW06047 TMW06047B TMW06056A TMW06552 H50141 H60018 H70111 H70105 M /17/ /18/ /20/ /19/2002 1/24/2005 Total kjeldahl nitrogen (TKN) Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation Flammability and FPARAM Conductivity, field umhos/cm Dissolved oxygen (DO), field Oxidation reduction potential (ORP) millivolts ph, field s.u Temperature, field Deg C Turbidity NTU b b b Footnotes: U Not detected at the associated reporting limit. J Estimated concentration. UJ Not detected; associated reporting limit is estimated. R Rejected b Exceedance of Part 201 Generic Cleanup Criteria and s dated December 31, b Exceedance of screening levels in the latest round of groundwater data for a given location Downgradient sampling location included in the groundwater evaluation discussion not analyzed (1) The GSI criteria is dependent on the ph or hardness, or both, of the receiving surface water. The estimated ph for the Saginaw River is 8 and the estimated hardness for the Saginaw River is 275 mg CaCO3/L Memo32 T1 T3 T5 6/7/2018

94 Table 4 Page 1 of 25 IU H Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s H H H H H H H H H H H H H MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 M20001 M20215 M40000 M80155 MW04757 M60539 MW04757 M05513 M50553 M50581 M50604 GW SSH007 GW JY251 11/16/1998 7/18/ /15/2001 1/5/2003 1/29/2004 1/25/ /7/2005 8/31/2006 9/12/ /12/ /2/ /30/ /1/2011 Criteria Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A VOAs a b c d e f 1,1,1,2Tetrachloroethane E E E UJ 1,1,1Trichloroethane E E E UJ U 1,1,2,2Tetrachloroethane E E E UJ U 1,1,2Trichloroethane E E E UJ U 1,1Dichloroethane E E E UJ U 1,1Dichloroethene E E E UJ U 1,1Dichloropropene N/A N/A N/A UJ 1,2,4Trichlorobenzene E E E02 1,2Dibromo3chloropropane (DBCP) E E E05 R 1,2Dibromoethane (Ethylene dibromide) E E E UJ 1,2Dichlorobenzene E E E UJ 1,2Dichloroethane E E E UJ U 1,2Dichloropropane E E E UJ U 1,3Dichlorobenzene E E E UJ 1,3Dichloropropane N/A N/A N/A UJ 1,4Dichlorobenzene E E E UJ 2,2Dichloropropane N/A N/A N/A UJ 2Butanone (Methyl ethyl ketone) (MEK) E E E+01 R R 2Hexanone E E E+00 R 0.02 U 4Methyl2pentanone (Methyl isobutyl ketone) (MIBK) E E E+00 R R Acetone E E E+02 R R Acetonitrile E E E+00 R Acrolein E E E04 R Acrylonitrile E E E02 R Allyl chloride N/A N/A N/A UJ Benzene E E E UJ Bromodichloromethane E E E UJ U Bromoform E E E UJ U Bromomethane (Methyl bromide) E E E UJ U Carbon disulfide E E E UJ U Carbon tetrachloride E E E UJ U Chlorobenzene E E E UJ U Chlorobromomethane N/A N/A N/A UJ Chloroethane E E E UJ U Chloroform (Trichloromethane) E E E UJ U Chloromethane (Methyl chloride) E E E UJ U Chloroprene N/A N/A N/A 0.01 UJ cis1,2dichloroethene E E E UJ U cis1,3dichloropropene NV NV NV UJ U cis1,4dichloro2butene N/A N/A N/A R Cyclohexane E E E+01 Dibromochloromethane E E E UJ U Dibromomethane E E E UJ Dichlorodifluoromethane (CFC12) E E E UJ Ethyl methacrylate N/A N/A N/A UJ Ethylbenzene E E E UJ U Iodomethane N/A N/A N/A UJ Isopropyl benzene E E E03 m&pxylenes N/A N/A N/A UJ U Methyl acetate N/A N/A N/A Methyl acrylonitrile N/A N/A N/A R Methyl cyclohexane N/A N/A N/A Methyl methacrylate N/A N/A N/A UJ Methyl tert butyl ether (MTBE) E E E01 Methylene chloride E E E UJ U Naphthalene E E E UJ oxylene N/A N/A N/A UJ U Propionitrile (ethyl cyanide) N/A N/A N/A R Styrene E E E UJ U Tetrachloroethene E E E UJ U Toluene E E E J U trans1,2dichloroethene E E E UJ U trans1,3dichloropropene N/A N/A N/A UJ U trans1,4dichloro2butene N/A N/A N/A R Trichloroethene E E E UJ U Trichlorofluoromethane (CFC11) E E E UJ Trifluorotrichloroethane (CFC113) E E E+01 Vinyl acetate E E E UJ Vinyl chloride E E E UJ U Xylenes (total) E E E Memo32T2 T4 T6 6/7/2018

95 Table 4 Page 2 of 25 IU H Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s H H H H H H H H H H H H H MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 M20001 M20215 M40000 M80155 MW04757 M60539 MW04757 M05513 M50553 M50581 M50604 GW SSH007 GW JY251 11/16/1998 7/18/ /15/2001 1/5/2003 1/29/2004 1/25/ /7/2005 8/31/2006 9/12/ /12/ /2/ /30/ /1/2011 SVOAs Criteria Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A 0,0,0Triethylphosphorothioate N/A N/A N/A 0.01 U 1,2,4,5Tetrachlorobenzene E E E U 1,2,4Trichlorobenzene E E E U 0.01 U 1,2Dichlorobenzene E E E U 1,3,5Trinitrobenzene N/A N/A N/A U 1,3Dichlorobenzene E E E U 1,3Dinitrobenzene N/A N/A N/A 0.01 U 1,4Dichlorobenzene E E E U 1,4Naphthoquinone N/A N/A N/A 0.01 U 1Naphthylamine N/A N/A N/A 0.01 U 2,2'Oxybis(1chloropropane) (bis(2chloroisopropyl) ether) N/A N/A N/A 0.01 U 0.01 U 2,2'Oxybis(2chloropropane) (bis(2chloroisopropyl) ether) 2,3,4,6Tetrachlorophenol N/A N/A N/A 0.01 U 2,4,5Trichlorophenol NV NV NV 0.01 U 0.01 U 2,4,6Trichlorophenol NV NV NV 0.01 U 0.01 U 2,4Dichlorophenol NV NV NV 0.01 U 0.01 U 2,4Dimethylphenol NV NV NV U 2,4Dinitrophenol NV NV NV U U 2,4Dinitrotoluene NV NV NV 0.01 U 0.01 U 2,6Dichlorophenol N/A N/A N/A 0.01 U 2,6Dinitrotoluene N/A N/A N/A 0.01 U 0.01 U 2Acetylaminofluorene N/A N/A N/A 0.01 U 2Chloronaphthalene N/A N/A N/A 0.01 U 0.01 U 2Chlorophenol E E E U 0.01 U 2Methylnaphthalene E E E U 0.01 U 2Methylphenol NV NV NV 0.01 U 0.01 U 2Naphthylamine N/A N/A N/A 0.01 U 2Nitroaniline N/A N/A N/A U U 2Nitrophenol E E E U 0.01 U 2Toluidine N/A N/A N/A 0.01 U 3&4Methylphenol N/A N/A N/A U 3,3'Dichlorobenzidine NV NV NV U U 3,3Dimethylbenzidine N/A N/A N/A U 3Methylcholanthrene N/A N/A N/A 0.01 U 3Nitroaniline N/A N/A N/A U U 4,6Dinitro2methylphenol NV NV NV U U 4Aminobiphenyl N/A N/A N/A 0.01 U 4Bromophenyl phenyl ether N/A N/A N/A 0.01 U 0.01 U 4Chloro3methylphenol NV NV NV 0.01 U 0.01 U 4Chloroaniline NV NV NV 0.01 U 0.01 U 4Chlorophenyl phenyl ether N/A N/A N/A 0.01 U 0.01 U 4Dimethylaminoazobenzene N/A N/A N/A 0.01 U 4Methylphenol N/A N/A N/A 4Nitroaniline N/A N/A N/A U U 4Nitrophenol N/A N/A N/A U U 5Nitro2toluidine N/A N/A N/A 0.01 U 7,12Dimethylbenz(a)anthracene N/A N/A N/A 0.01 U Acenaphthene E E E U 0.01 U Acenaphthylene E E E U 0.01 U Acetophenone E E E U Anthracene E E E U 0.01 U Atrazine NV NV NV Benzaldehyde N/A N/A N/A Benzo(a)anthracene E E E U 0.01 U Benzo(a)pyrene NV NV NV 0.01 U 0.01 U Benzo(b)fluoranthene NV NV NV 0.01 U 0.01 U Benzo(g,h,i)perylene NV NV NV 0.01 U 0.01 U Benzo(k)fluoranthene NV NV NV 0.01 U 0.01 U Benzyl alcohol NV NV NV 0.01 U Biphenyl (1,1Biphenyl) N/A N/A N/A bis(2chloroethoxy)methane N/A N/A N/A 0.01 U 0.01 U bis(2chloroethyl)ether E E E U 0.01 U bis(2ethylhexyl)phthalate (DEHP) NV NV NV 0.01 U 0.01 U Butyl benzylphthalate (BBP) NV NV NV 0.01 U 0.01 U Caprolactam NV NV NV Carbazole NV NV NV 0.01 U Chlorobenzilate N/A N/A N/A 0.01 U Chrysene NV NV NV 0.01 U 0.01 U Diallate N/A N/A N/A 0.01 U Dibenz(a,h)anthracene NV NV NV 0.01 U 0.01 U Dibenzofuran E E E U 0.01 U Memo32T2 T4 T6 6/7/2018

96 Table 4 Page 3 of 25 IU H Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s H H H H H H H H H H H H H MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 M20001 M20215 M40000 M80155 MW04757 M60539 MW04757 M05513 M50553 M50581 M50604 GW SSH007 GW JY251 11/16/1998 7/18/ /15/2001 1/5/2003 1/29/2004 1/25/ /7/2005 8/31/2006 9/12/ /12/ /2/ /30/ /1/2011 Criteria Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A Diethyl phthalate NV NV NV 0.01 U 0.01 U Dimethoate N/A N/A N/A 0.01 U Dimethyl phthalate NV NV NV 0.01 U 0.01 U Dinbutylphthalate (DBP) NV NV NV 0.01 U 0.01 U Dinoctyl phthalate (DnOP) E E E U 0.01 U Dinoseb NV NV NV U Diphenylamine N/A N/A N/A 0.01 U Disulfoton N/A N/A N/A 0.01 U Ethyl methanesulfonate N/A N/A N/A 0.01 U Ethyl parathion N/A N/A N/A 0.01 U Famphur N/A N/A N/A 0.01 U Fluoranthene NV NV NV 0.01 U 0.01 U Fluorene E E E U 0.01 U Hexachlorobenzene E E E U 0.01 U Hexachlorobutadiene E E E U 0.01 U Hexachlorocyclopentadiene E E E U 0.01 U Hexachloroethane E E E U 0.01 U Hexachloropropene N/A N/A N/A 0.01 U Indeno(1,2,3cd)pyrene NV NV NV 0.01 U 0.01 U Isodrin N/A N/A N/A 0.01 U Isophorone NV NV NV 0.01 U 0.01 U Isosafrole N/A N/A N/A 0.01 U Kepone N/A N/A N/A 0.1 U Methapyrilene N/A N/A N/A 0.1 U Methyl methanesulfonate N/A N/A N/A 0.01 U Methyl parathion NV NV NV 0.01 U Naphthalene E E E U 0.01 U Nitrobenzene E E E U 0.01 U NNitrosodiethylamine N/A N/A N/A 0.01 U NNitrosodimethylamine N/A N/A N/A U NNitrosodinbutylamine N/A N/A N/A 0.01 U NNitrosodinpropylamine NV NV NV 0.01 U 0.01 U NNitrosodiphenylamine NV NV NV 0.01 U 0.01 U NNitrosomethylethylamine N/A N/A N/A 0.01 U NNitrosopiperidine N/A N/A N/A 0.01 U NNitrosopyrrolidine N/A N/A N/A 0.01 U Pentachlorobenzene E E E U Pentachloronitrobenzene E E E U Pentachlorophenol NV NV NV U U Phenacetin N/A N/A N/A 0.05 U Phenanthrene E E E U 0.01 U Phenol NV NV NV 0.01 U 0.01 U Phorate N/A N/A N/A 0.01 U pphenylenediamine N/A N/A N/A 0.01 U Pronamide N/A N/A N/A 0.01 U Pyrene E E E U 0.01 U Safrole N/A N/A N/A 0.01 U Thionazin (O,OdiethylO2pyrazinyl phosphorothioate) N/A N/A N/A U Metals Aluminum 0.05 NV NV NV 33.7 J a 23.3 a J a Aluminum (dissolved) 0.05 NV NV NV 0.05 U 0.05 U Antimony NV NV NV 0.05 U 0.05 U 0.05 U Antimony (dissolved) NV NV NV 0.05 U 0.05 U Arsenic 0.01 NV NV NV J a a J Arsenic (dissolved) 0.01 NV NV NV U J Barium 2 N/A N/A N/A J Barium (dissolved) 2 NV NV NV Beryllium NV NV NV U J U Beryllium (dissolved) NV NV NV U U Cadmium NV NV NV U J U Cadmium (dissolved) NV NV NV U U Calcium NV NV NV 137 Calcium (dissolved) NV NV NV 46.9 Chromium 0.1 NV NV NV J a U U U J Chromium (dissolved) 0.1 NV NV NV U U Chromium III (trivalent) 0.1 N/A N/A N/A Chromium VI (hexavalent) 0.1 NV NV NV 0.01 U 0.05 UJ 0.05 U R U J Chromium VI (hexavalent) (dissolved) 0.1 NV NV NV Cobalt NV NV NV 0.02 J a Memo32T2 T4 T6 6/7/2018

97 Table 4 Page 4 of 25 IU H Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s H H H H H H H H H H H H H MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 M20001 M20215 M40000 M80155 MW04757 M60539 MW04757 M05513 M50553 M50581 M50604 GW SSH007 GW JY251 11/16/1998 7/18/ /15/2001 1/5/2003 1/29/2004 1/25/ /7/2005 8/31/2006 9/12/ /12/ /2/ /30/ /1/2011 Criteria Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A Cobalt (dissolved) NV NV NV 0.01 U Copper 1 NV NV NV J U Copper (dissolved) 1 NV NV NV 0.01 U 0.01 U Iron 0.3 NV NV NV 201 a Iron (dissolved) 0.3 NV NV NV a Lead N/A N/A N/A J a a U Lead (dissolved) NV NV NV U U Magnesium 330 NV NV NV Magnesium (dissolved) 330 NV NV NV Manganese 0.05 NV NV NV 3.2 a 1.63 a 1.05 a Manganese (dissolved) 0.05 NV NV NV a a Mercury E E E UJ Mercury (dissolved) E E E UJ Nickel NV NV NV J a a 0.02 U Nickel (dissolved) NV NV NV 0.02 U 0.02 U Potassium NV NV NV Potassium (dissolved) NV NV NV Selenium 0.05 NV NV NV UJ Selenium (dissolved) 0.05 NV NV NV UJ Silver 0.1 NV NV NV 0.01 U Silver (dissolved) 0.1 NV NV NV 0.01 U Sodium 230 NV NV NV Sodium (dissolved) 230 NV NV NV Thallium NV NV NV UJ Thallium (dissolved) NV NV NV U Tin NV NV NV 0.05 U Tin (dissolved) NV NV NV 0.05 U Vanadium NV NV NV J a a 0.01 U 0.01 U 0.01 U 0.01 U Vanadium (dissolved) NV NV NV 0.01 U 0.01 U Zinc 5 NV NV NV J U Zinc (dissolved) 5 NV NV NV 0.01 U 0.01 U PCBs Aroclor1016 (PCB1016) 3.10E E E U U U Aroclor1221 (PCB1221) 3.10E E E U U U Aroclor1232 (PCB1232) 3.10E E E U U U Aroclor1242 (PCB1242) 3.10E E E U U U Aroclor1248 (PCB1248) 3.10E E E U U U Aroclor1254 (PCB1254) 3.10E E E U U U Aroclor1260 (PCB1260) 3.10E E E U de U Total PCBs E E E U de U Petrl Prod Ethylene glycol NV NV NV Propylene glycol NV NV NV Wet Alkalinity, total (as CaCO3) Ammonia E E E Ammonia, field 1.90E E E+00 Unionized ammonia Bicarbonate (as CaCO3) Chloride 250 NV NV NV Cyanide (amenable) U UJ Cyanide (total) E E E U J 0.01 U 0.01 de U U UJ Fluoride N/A N/A N/A 6.1 Formaldehyde E E E U Nitrate (as N) 10 N/A N/A N/A Nitrite (as N) 1 N/A N/A N/A ph, lab s.u Sulfide 3.56 J Total dissolved solids (TDS) 500 Total kjeldahl nitrogen (TKN) 11.1 J FPARAM Memo32T2 T4 T6 6/7/2018

98 Table 4 Page 5 of 25 IU H Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s H H H H H H H H H H H H H MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 M20001 M20215 M40000 M80155 MW04757 M60539 MW04757 M05513 M50553 M50581 M50604 GW SSH007 GW JY251 11/16/1998 7/18/ /15/2001 1/5/2003 1/29/2004 1/25/ /7/2005 8/31/2006 9/12/ /12/ /2/ /30/ /1/2011 Criteria Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A Conductivity, field umhos/cm Dissolved oxygen (DO), field Oxidation reduction potential (ORP) millivolts ph, field s.u Temperature, field Deg C Turbidity NTU Footnotes: U Not detected at the associated reporting limit. J Estimated concentration. UJ Not detected; associated reporting limit is estimated. R Rejected b Exceedance of DRAFT 2017 Part 201 Generic Cleanup Criteria and s 9.06 b Exceedance of screening levels in the latest round of groundwater data for a given location Downgradient sampling location included in the groundwater evaluation discussion Not analyzed NV MDEQ VI screening deemed Not Volatile N/A Not analyzed in MDEQ VI screening Memo32T2 T4 T6 6/7/2018

99 Table 4 Page 6 of 25 IU H Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s H H H H H H H MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 GW SSH261 GW SSH283 GW SSH284 GW SSH270 GW SSH14007 GW SSH1592 GW SSH /7/2012 7/16/2013 7/16/ /12/ /14/ /3/ /7/2016 Criteria Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A VOAs a b c d e f 1,1,1,2Tetrachloroethane E E E02 1,1,1Trichloroethane E E E+00 1,1,2,2Tetrachloroethane E E E03 1,1,2Trichloroethane E E E06 1,1Dichloroethane E E E02 1,1Dichloroethene E E E01 1,1Dichloropropene N/A N/A N/A 1,2,4Trichlorobenzene E E E02 1,2Dibromo3chloropropane (DBCP) E E E05 1,2Dibromoethane (Ethylene dibromide) E E E04 1,2Dichlorobenzene E E E+00 1,2Dichloroethane E E E03 1,2Dichloropropane E E E02 1,3Dichlorobenzene E E E02 1,3Dichloropropane N/A N/A N/A 1,4Dichlorobenzene E E E02 2,2Dichloropropane N/A N/A N/A 2Butanone (Methyl ethyl ketone) (MEK) E E E+01 2Hexanone E E E+00 4Methyl2pentanone (Methyl isobutyl ketone) (MIBK) E E E+00 Acetone E E E+02 Acetonitrile E E E+00 Acrolein E E E04 Acrylonitrile E E E02 Allyl chloride N/A N/A N/A Benzene E E E02 Bromodichloromethane E E E03 Bromoform E E E01 Bromomethane (Methyl bromide) E E E02 Carbon disulfide E E E+00 Carbon tetrachloride E E E02 Chlorobenzene E E E01 Chlorobromomethane N/A N/A N/A Chloroethane E E E+00 Chloroform (Trichloromethane) E E E03 Chloromethane (Methyl chloride) E E E01 Chloroprene N/A N/A N/A cis1,2dichloroethene E E E02 cis1,3dichloropropene NV NV NV cis1,4dichloro2butene N/A N/A N/A Cyclohexane E E E+01 Dibromochloromethane E E E03 Dibromomethane E E E02 Dichlorodifluoromethane (CFC12) E E E01 Ethyl methacrylate N/A N/A N/A Ethylbenzene E E E02 Iodomethane N/A N/A N/A Isopropyl benzene E E E03 m&pxylenes N/A N/A N/A Methyl acetate N/A N/A N/A Methyl acrylonitrile N/A N/A N/A Methyl cyclohexane N/A N/A N/A Methyl methacrylate N/A N/A N/A Methyl tert butyl ether (MTBE) E E E01 Methylene chloride E E E+00 Naphthalene E E E02 oxylene N/A N/A N/A Propionitrile (ethyl cyanide) N/A N/A N/A Styrene E E E01 Tetrachloroethene E E E02 Toluene E E E+00 trans1,2dichloroethene E E E01 trans1,3dichloropropene N/A N/A N/A trans1,4dichloro2butene N/A N/A N/A Trichloroethene E E E03 Trichlorofluoromethane (CFC11) E E E01 Trifluorotrichloroethane (CFC113) E E E+01 Vinyl acetate E E E+00 Vinyl chloride E E E02 Xylenes (total) E E E Memo32T2 T4 T6 6/7/2018

100 Table 4 Page 7 of 25 IU H Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s H H H H H H H MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 GW SSH261 GW SSH283 GW SSH284 GW SSH270 GW SSH14007 GW SSH1592 GW SSH /7/2012 7/16/2013 7/16/ /12/ /14/ /3/ /7/2016 SVOAs Criteria Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A 0,0,0Triethylphosphorothioate N/A N/A N/A 1,2,4,5Tetrachlorobenzene E E E03 1,2,4Trichlorobenzene E E E02 1,2Dichlorobenzene E E E+00 1,3,5Trinitrobenzene N/A N/A N/A 1,3Dichlorobenzene E E E02 1,3Dinitrobenzene N/A N/A N/A 1,4Dichlorobenzene E E E02 1,4Naphthoquinone N/A N/A N/A 1Naphthylamine N/A N/A N/A 2,2'Oxybis(1chloropropane) (bis(2chloroisopropyl) ether) N/A N/A N/A 2,2'Oxybis(2chloropropane) (bis(2chloroisopropyl) ether) 2,3,4,6Tetrachlorophenol N/A N/A N/A 2,4,5Trichlorophenol NV NV NV 2,4,6Trichlorophenol NV NV NV 2,4Dichlorophenol NV NV NV 2,4Dimethylphenol NV NV NV 2,4Dinitrophenol NV NV NV 2,4Dinitrotoluene NV NV NV 2,6Dichlorophenol N/A N/A N/A 2,6Dinitrotoluene N/A N/A N/A 2Acetylaminofluorene N/A N/A N/A 2Chloronaphthalene N/A N/A N/A 2Chlorophenol E E E01 2Methylnaphthalene E E E01 2Methylphenol NV NV NV 2Naphthylamine N/A N/A N/A 2Nitroaniline N/A N/A N/A 2Nitrophenol E E E03 2Toluidine N/A N/A N/A 3&4Methylphenol N/A N/A N/A 3,3'Dichlorobenzidine NV NV NV 3,3Dimethylbenzidine N/A N/A N/A 3Methylcholanthrene N/A N/A N/A 3Nitroaniline N/A N/A N/A 4,6Dinitro2methylphenol NV NV NV 4Aminobiphenyl N/A N/A N/A 4Bromophenyl phenyl ether N/A N/A N/A 4Chloro3methylphenol NV NV NV 4Chloroaniline NV NV NV 4Chlorophenyl phenyl ether N/A N/A N/A 4Dimethylaminoazobenzene N/A N/A N/A 4Methylphenol N/A N/A N/A 4Nitroaniline N/A N/A N/A 4Nitrophenol N/A N/A N/A 5Nitro2toluidine N/A N/A N/A 7,12Dimethylbenz(a)anthracene N/A N/A N/A Acenaphthene E E E+00 Acenaphthylene E E E+00 Acetophenone E E E+01 Anthracene E E E02 Atrazine NV NV NV Benzaldehyde N/A N/A N/A Benzo(a)anthracene E E E03 Benzo(a)pyrene NV NV NV Benzo(b)fluoranthene NV NV NV Benzo(g,h,i)perylene NV NV NV Benzo(k)fluoranthene NV NV NV Benzyl alcohol NV NV NV Biphenyl (1,1Biphenyl) N/A N/A N/A bis(2chloroethoxy)methane N/A N/A N/A bis(2chloroethyl)ether E E E02 bis(2ethylhexyl)phthalate (DEHP) NV NV NV Butyl benzylphthalate (BBP) NV NV NV Caprolactam NV NV NV Carbazole NV NV NV Chlorobenzilate N/A N/A N/A Chrysene NV NV NV Diallate N/A N/A N/A Dibenz(a,h)anthracene NV NV NV Dibenzofuran E E E Memo32T2 T4 T6 6/7/2018

101 Table 4 Page 8 of 25 IU H Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s Criteria Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A Diethyl phthalate NV NV NV Dimethoate N/A N/A N/A Dimethyl phthalate NV NV NV Dinbutylphthalate (DBP) NV NV NV Dinoctyl phthalate (DnOP) E E E02 Dinoseb NV NV NV Diphenylamine N/A N/A N/A Disulfoton N/A N/A N/A Ethyl methanesulfonate N/A N/A N/A Ethyl parathion N/A N/A N/A Famphur N/A N/A N/A Fluoranthene NV NV NV Fluorene E E E+00 Hexachlorobenzene E E E04 Hexachlorobutadiene E E E03 Hexachlorocyclopentadiene E E E04 Hexachloroethane E E E02 Hexachloropropene N/A N/A N/A Indeno(1,2,3cd)pyrene NV NV NV Isodrin N/A N/A N/A Isophorone NV NV NV Isosafrole N/A N/A N/A Kepone N/A N/A N/A Methapyrilene N/A N/A N/A Methyl methanesulfonate N/A N/A N/A Methyl parathion NV NV NV Naphthalene E E E02 Nitrobenzene E E E01 NNitrosodiethylamine N/A N/A N/A NNitrosodimethylamine N/A N/A N/A NNitrosodinbutylamine N/A N/A N/A NNitrosodinpropylamine NV NV NV NNitrosodiphenylamine NV NV NV NNitrosomethylethylamine N/A N/A N/A NNitrosopiperidine N/A N/A N/A NNitrosopyrrolidine N/A N/A N/A Pentachlorobenzene E E E04 Pentachloronitrobenzene E E E01 Pentachlorophenol NV NV NV Phenacetin N/A N/A N/A Phenanthrene E E E04 Phenol NV NV NV Phorate N/A N/A N/A pphenylenediamine N/A N/A N/A Pronamide N/A N/A N/A Pyrene E E E01 Safrole N/A N/A N/A Thionazin (O,OdiethylO2pyrazinyl phosphorothioate) N/A N/A N/A H H H H H H H MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 GW SSH261 GW SSH283 GW SSH284 GW SSH270 GW SSH14007 GW SSH1592 GW SSH /7/2012 7/16/2013 7/16/ /12/ /14/ /3/ /7/2016 Metals Aluminum 0.05 NV NV NV Aluminum (dissolved) 0.05 NV NV NV Antimony NV NV NV Antimony (dissolved) NV NV NV Arsenic 0.01 NV NV NV Arsenic (dissolved) 0.01 NV NV NV Barium 2 N/A N/A N/A Barium (dissolved) 2 NV NV NV Beryllium NV NV NV Beryllium (dissolved) NV NV NV Cadmium NV NV NV Cadmium (dissolved) NV NV NV Calcium NV NV NV Calcium (dissolved) NV NV NV Chromium 0.1 NV NV NV Chromium (dissolved) 0.1 NV NV NV Chromium III (trivalent) 0.1 N/A N/A N/A Chromium VI (hexavalent) 0.1 NV NV NV Chromium VI (hexavalent) (dissolved) 0.1 NV NV NV Cobalt NV NV NV Memo32T2 T4 T6 6/7/2018

102 Table 4 Page 9 of 25 IU H Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s Criteria Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A Cobalt (dissolved) NV NV NV Copper 1 NV NV NV Copper (dissolved) 1 NV NV NV Iron 0.3 NV NV NV Iron (dissolved) 0.3 NV NV NV Lead N/A N/A N/A Lead (dissolved) NV NV NV Magnesium 330 NV NV NV Magnesium (dissolved) 330 NV NV NV Manganese 0.05 NV NV NV Manganese (dissolved) 0.05 NV NV NV Mercury E E E04 Mercury (dissolved) E E E04 Nickel NV NV NV Nickel (dissolved) NV NV NV Potassium NV NV NV Potassium (dissolved) NV NV NV Selenium 0.05 NV NV NV Selenium (dissolved) 0.05 NV NV NV Silver 0.1 NV NV NV Silver (dissolved) 0.1 NV NV NV Sodium 230 NV NV NV Sodium (dissolved) 230 NV NV NV Thallium NV NV NV Thallium (dissolved) NV NV NV Tin NV NV NV Tin (dissolved) NV NV NV Vanadium NV NV NV Vanadium (dissolved) NV NV NV Zinc 5 NV NV NV Zinc (dissolved) 5 NV NV NV H H H H H H H MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 GW SSH261 GW SSH283 GW SSH284 GW SSH270 GW SSH14007 GW SSH1592 GW SSH /7/2012 7/16/2013 7/16/ /12/ /14/ /3/ /7/2016 PCBs Aroclor1016 (PCB1016) 3.10E E E03 Aroclor1221 (PCB1221) 3.10E E E03 Aroclor1232 (PCB1232) 3.10E E E03 Aroclor1242 (PCB1242) 3.10E E E03 Aroclor1248 (PCB1248) 3.10E E E03 Aroclor1254 (PCB1254) 3.10E E E03 Aroclor1260 (PCB1260) 3.10E E E03 Total PCBs E E E03 Petrl Prod Ethylene glycol NV NV NV Propylene glycol NV NV NV Wet Alkalinity, total (as CaCO3) Ammonia E E E+00 Ammonia, field 1.90E E E+00 Unionized ammonia Bicarbonate (as CaCO3) Chloride 250 NV NV NV Cyanide (amenable) Cyanide (total) E E E02 Fluoride N/A N/A N/A Formaldehyde E E E+01 Nitrate (as N) 10 N/A N/A N/A Nitrite (as N) 1 N/A N/A N/A ph, lab s.u Sulfide Total dissolved solids (TDS) 500 Total kjeldahl nitrogen (TKN) 14 adef 1.1 J 1.7 J 0.20 U U U U U FPARAM Memo32T2 T4 T6 6/7/2018

103 Table 4 Page 10 of 25 IU H Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s H H H H H H H MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 MW04757 GW SSH261 GW SSH283 GW SSH284 GW SSH270 GW SSH14007 GW SSH1592 GW SSH /7/2012 7/16/2013 7/16/ /12/ /14/ /3/ /7/2016 Criteria Conductivity, field umhos/cm Dissolved oxygen (DO), field Oxidation reduction potential (ORP) millivolts ph, field s.u Temperature, field Deg C Turbidity NTU Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A Footnotes: U Not detected at the associated reporting limit. J Estimated concentration. UJ Not detected; associated reporting limit is estimated. R Rejected b Exceedance of DRAFT 2017 Part 201 Generic Cleanup Criteria and s 9.06 b Exceedance of screening levels in the latest round of groundwater data for a given location Downgradient sampling location included in the groundwater evaluation discussion Not analyzed NV MDEQ VI screening deemed Not Volatile N/A Not analyzed in MDEQ VI screening Memo32T2 T4 T6 6/7/2018

104 Table 4 Page 11 of 25 IU H Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s H H H H H H H H H H H H MW04757 MW05443 MW05443 MW05443 MW05443 MW05443 MW05443 MW05443 MW05452 MW05452 MW05452 MW15457 GW SSH17016 M20004 M10207 M20004 W CA120 M20503 MW05443 GW SSH282 M20526 MW05452 MW05452~7/16/2013 M /18/ /16/1998 7/14/2000 1/29/2004 2/5/2004 1/14/ /7/2005 7/16/2013 1/21/ /8/2005 7/16/ /16/1998 Criteria Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A VOAs a b c d e f 1,1,1,2Tetrachloroethane E E E02 1,1,1Trichloroethane E E E+00 1,1,2,2Tetrachloroethane E E E03 1,1,2Trichloroethane E E E06 1,1Dichloroethane E E E02 1,1Dichloroethene E E E01 1,1Dichloropropene N/A N/A N/A 1,2,4Trichlorobenzene E E E02 1,2Dibromo3chloropropane (DBCP) E E E05 1,2Dibromoethane (Ethylene dibromide) E E E04 1,2Dichlorobenzene E E E+00 1,2Dichloroethane E E E03 1,2Dichloropropane E E E02 1,3Dichlorobenzene E E E02 1,3Dichloropropane N/A N/A N/A 1,4Dichlorobenzene E E E02 2,2Dichloropropane N/A N/A N/A 2Butanone (Methyl ethyl ketone) (MEK) E E E+01 2Hexanone E E E+00 4Methyl2pentanone (Methyl isobutyl ketone) (MIBK) E E E+00 Acetone E E E+02 Acetonitrile E E E+00 Acrolein E E E04 Acrylonitrile E E E02 Allyl chloride N/A N/A N/A Benzene E E E02 Bromodichloromethane E E E03 Bromoform E E E01 Bromomethane (Methyl bromide) E E E02 Carbon disulfide E E E+00 Carbon tetrachloride E E E02 Chlorobenzene E E E01 Chlorobromomethane N/A N/A N/A Chloroethane E E E+00 Chloroform (Trichloromethane) E E E03 Chloromethane (Methyl chloride) E E E01 Chloroprene N/A N/A N/A cis1,2dichloroethene E E E02 cis1,3dichloropropene NV NV NV cis1,4dichloro2butene N/A N/A N/A Cyclohexane E E E+01 Dibromochloromethane E E E03 Dibromomethane E E E02 Dichlorodifluoromethane (CFC12) E E E01 Ethyl methacrylate N/A N/A N/A Ethylbenzene E E E02 Iodomethane N/A N/A N/A Isopropyl benzene E E E03 m&pxylenes N/A N/A N/A Methyl acetate N/A N/A N/A Methyl acrylonitrile N/A N/A N/A Methyl cyclohexane N/A N/A N/A Methyl methacrylate N/A N/A N/A Methyl tert butyl ether (MTBE) E E E01 Methylene chloride E E E+00 Naphthalene E E E02 oxylene N/A N/A N/A Propionitrile (ethyl cyanide) N/A N/A N/A Styrene E E E01 Tetrachloroethene E E E02 Toluene E E E+00 trans1,2dichloroethene E E E01 trans1,3dichloropropene N/A N/A N/A trans1,4dichloro2butene N/A N/A N/A Trichloroethene E E E03 Trichlorofluoromethane (CFC11) E E E01 Trifluorotrichloroethane (CFC113) E E E+01 Vinyl acetate E E E+00 Vinyl chloride E E E02 Xylenes (total) E E E UJ UJ UJ U U UJ UJ U U UJ UJ U U UJ UJ U U UJ UJ U U UJ UJ UJ U R U R UJ U UJ UJ U UJ UJ U U UJ UJ U U UJ UJ U UJ UJ UJ UJ U UJ UJ UJ R 0.02 U U R R 0.02 U 0.05 U R R 0.02 U 0.05 U R J 0.01 J U R R R R R R R UJ UJ J de U UJ UJ U U UJ UJ U U UJ UJ U U UJ J U U UJ UJ U U UJ UJ U U UJ UJ UJ UJ U U UJ UJ U U UJ UJ U U UJ 0.01 UJ 0.01 UJ UJ U U UJ UJ U U UJ R R U UJ U U UJ UJ UJ UJ U UJ UJ UJ UJ U U UJ UJ UJ U UJ U UJ 0.01 U R R U UJ UJ U UJ U U UJ UJ UJ UJ U UJ R R UJ U U UJ UJ U U UJ UJ U UJ UJ U U UJ UJ U U UJ R R UJ U U UJ UJ U UJ U UJ UJ UJ U U UJ U Memo32T2 T4 T6 6/7/2018

105 Table 4 Page 12 of 25 IU H Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s SVOAs Criteria Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A 0,0,0Triethylphosphorothioate N/A N/A N/A 1,2,4,5Tetrachlorobenzene E E E03 1,2,4Trichlorobenzene E E E02 1,2Dichlorobenzene E E E+00 1,3,5Trinitrobenzene N/A N/A N/A 1,3Dichlorobenzene E E E02 1,3Dinitrobenzene N/A N/A N/A 1,4Dichlorobenzene E E E02 1,4Naphthoquinone N/A N/A N/A 1Naphthylamine N/A N/A N/A 2,2'Oxybis(1chloropropane) (bis(2chloroisopropyl) ether) N/A N/A N/A 2,2'Oxybis(2chloropropane) (bis(2chloroisopropyl) ether) 2,3,4,6Tetrachlorophenol N/A N/A N/A 2,4,5Trichlorophenol NV NV NV 2,4,6Trichlorophenol NV NV NV 2,4Dichlorophenol NV NV NV 2,4Dimethylphenol NV NV NV 2,4Dinitrophenol NV NV NV 2,4Dinitrotoluene NV NV NV 2,6Dichlorophenol N/A N/A N/A 2,6Dinitrotoluene N/A N/A N/A 2Acetylaminofluorene N/A N/A N/A 2Chloronaphthalene N/A N/A N/A 2Chlorophenol E E E01 2Methylnaphthalene E E E01 2Methylphenol NV NV NV 2Naphthylamine N/A N/A N/A 2Nitroaniline N/A N/A N/A 2Nitrophenol E E E03 2Toluidine N/A N/A N/A 3&4Methylphenol N/A N/A N/A 3,3'Dichlorobenzidine NV NV NV 3,3Dimethylbenzidine N/A N/A N/A 3Methylcholanthrene N/A N/A N/A 3Nitroaniline N/A N/A N/A 4,6Dinitro2methylphenol NV NV NV 4Aminobiphenyl N/A N/A N/A 4Bromophenyl phenyl ether N/A N/A N/A 4Chloro3methylphenol NV NV NV 4Chloroaniline NV NV NV 4Chlorophenyl phenyl ether N/A N/A N/A 4Dimethylaminoazobenzene N/A N/A N/A 4Methylphenol N/A N/A N/A 4Nitroaniline N/A N/A N/A 4Nitrophenol N/A N/A N/A 5Nitro2toluidine N/A N/A N/A 7,12Dimethylbenz(a)anthracene N/A N/A N/A Acenaphthene E E E+00 Acenaphthylene E E E+00 Acetophenone E E E+01 Anthracene E E E02 Atrazine NV NV NV Benzaldehyde N/A N/A N/A Benzo(a)anthracene E E E03 Benzo(a)pyrene NV NV NV Benzo(b)fluoranthene NV NV NV Benzo(g,h,i)perylene NV NV NV Benzo(k)fluoranthene NV NV NV Benzyl alcohol NV NV NV Biphenyl (1,1Biphenyl) N/A N/A N/A bis(2chloroethoxy)methane N/A N/A N/A bis(2chloroethyl)ether E E E02 bis(2ethylhexyl)phthalate (DEHP) NV NV NV Butyl benzylphthalate (BBP) NV NV NV Caprolactam NV NV NV Carbazole NV NV NV Chlorobenzilate N/A N/A N/A Chrysene NV NV NV Diallate N/A N/A N/A Dibenz(a,h)anthracene NV NV NV Dibenzofuran E E E+00 H H H H H H H H H H H H MW04757 MW05443 MW05443 MW05443 MW05443 MW05443 MW05443 MW05443 MW05452 MW05452 MW05452 MW15457 GW SSH17016 M20004 M10207 M20004 W CA120 M20503 MW05443 GW SSH282 M20526 MW05452 MW05452~7/16/2013 M /18/ /16/1998 7/14/2000 1/29/2004 2/5/2004 1/14/ /7/2005 7/16/2013 1/21/ /8/2005 7/16/ /16/ U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U U 0.01 U U U 0.02 U U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U U U 0.01 U 0.01 U 0.01 U U U 0.02 U U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U U U U U U U 0.01 U 0.01 U U U 0.02 U U U U 0.02 U U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.02 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U U U 0.02 U U U U 0.02 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U Memo32T2 T4 T6 6/7/2018

106 Table 4 Page 13 of 25 IU H Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s Criteria Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A Diethyl phthalate NV NV NV Dimethoate N/A N/A N/A Dimethyl phthalate NV NV NV Dinbutylphthalate (DBP) NV NV NV Dinoctyl phthalate (DnOP) E E E02 Dinoseb NV NV NV Diphenylamine N/A N/A N/A Disulfoton N/A N/A N/A Ethyl methanesulfonate N/A N/A N/A Ethyl parathion N/A N/A N/A Famphur N/A N/A N/A Fluoranthene NV NV NV Fluorene E E E+00 Hexachlorobenzene E E E04 Hexachlorobutadiene E E E03 Hexachlorocyclopentadiene E E E04 Hexachloroethane E E E02 Hexachloropropene N/A N/A N/A Indeno(1,2,3cd)pyrene NV NV NV Isodrin N/A N/A N/A Isophorone NV NV NV Isosafrole N/A N/A N/A Kepone N/A N/A N/A Methapyrilene N/A N/A N/A Methyl methanesulfonate N/A N/A N/A Methyl parathion NV NV NV Naphthalene E E E02 Nitrobenzene E E E01 NNitrosodiethylamine N/A N/A N/A NNitrosodimethylamine N/A N/A N/A NNitrosodinbutylamine N/A N/A N/A NNitrosodinpropylamine NV NV NV NNitrosodiphenylamine NV NV NV NNitrosomethylethylamine N/A N/A N/A NNitrosopiperidine N/A N/A N/A NNitrosopyrrolidine N/A N/A N/A Pentachlorobenzene E E E04 Pentachloronitrobenzene E E E01 Pentachlorophenol NV NV NV Phenacetin N/A N/A N/A Phenanthrene E E E04 Phenol NV NV NV Phorate N/A N/A N/A pphenylenediamine N/A N/A N/A Pronamide N/A N/A N/A Pyrene E E E01 Safrole N/A N/A N/A Thionazin (O,OdiethylO2pyrazinyl phosphorothioate) N/A N/A N/A H H H H H H H H H H H H MW04757 MW05443 MW05443 MW05443 MW05443 MW05443 MW05443 MW05443 MW05452 MW05452 MW05452 MW15457 GW SSH17016 M20004 M10207 M20004 W CA120 M20503 MW05443 GW SSH282 M20526 MW05452 MW05452~7/16/2013 M /18/ /16/1998 7/14/2000 1/29/2004 2/5/2004 1/14/ /7/2005 7/16/2013 1/21/ /8/2005 7/16/ /16/ U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.1 U 0.1 U 0.1 U 0.1 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.05 U 0.05 U U U 0.02 U U 0.05 U 0.05 U 0.01 U 0.01 U U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U U U Metals Aluminum 0.05 NV NV NV Aluminum (dissolved) 0.05 NV NV NV Antimony NV NV NV Antimony (dissolved) NV NV NV Arsenic 0.01 NV NV NV Arsenic (dissolved) 0.01 NV NV NV Barium 2 N/A N/A N/A Barium (dissolved) 2 NV NV NV Beryllium NV NV NV Beryllium (dissolved) NV NV NV Cadmium NV NV NV Cadmium (dissolved) NV NV NV Calcium NV NV NV Calcium (dissolved) NV NV NV Chromium 0.1 NV NV NV Chromium (dissolved) 0.1 NV NV NV Chromium III (trivalent) 0.1 N/A N/A N/A Chromium VI (hexavalent) 0.1 NV NV NV Chromium VI (hexavalent) (dissolved) 0.1 NV NV NV Cobalt NV NV NV 70.3 J a 11.4 a 0.27 a J a 103 J a 0.06 a J U a 0.05 U 0.05 U U 0.05 UJ 0.05 U 0.05 U 0.05 U U 0.05 U J a a a a a a U U U U U a U U U U U U U U U U U U U J a U U J a U U U U U 0.01 U J a U J a Memo32T2 T4 T6 6/7/2018

107 Table 4 Page 14 of 25 IU H Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s Criteria Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A Cobalt (dissolved) NV NV NV Copper 1 NV NV NV Copper (dissolved) 1 NV NV NV Iron 0.3 NV NV NV Iron (dissolved) 0.3 NV NV NV Lead N/A N/A N/A Lead (dissolved) NV NV NV Magnesium 330 NV NV NV Magnesium (dissolved) 330 NV NV NV Manganese 0.05 NV NV NV Manganese (dissolved) 0.05 NV NV NV Mercury E E E04 Mercury (dissolved) E E E04 Nickel NV NV NV Nickel (dissolved) NV NV NV Potassium NV NV NV Potassium (dissolved) NV NV NV Selenium 0.05 NV NV NV Selenium (dissolved) 0.05 NV NV NV Silver 0.1 NV NV NV Silver (dissolved) 0.1 NV NV NV Sodium 230 NV NV NV Sodium (dissolved) 230 NV NV NV Thallium NV NV NV Thallium (dissolved) NV NV NV Tin NV NV NV Tin (dissolved) NV NV NV Vanadium NV NV NV Vanadium (dissolved) NV NV NV Zinc 5 NV NV NV Zinc (dissolved) 5 NV NV NV H H H H H H H H H H H H MW04757 MW05443 MW05443 MW05443 MW05443 MW05443 MW05443 MW05443 MW05452 MW05452 MW05452 MW15457 GW SSH17016 M20004 M10207 M20004 W CA120 M20503 MW05443 GW SSH282 M20526 MW05452 MW05452~7/16/2013 M /18/ /16/1998 7/14/2000 1/29/2004 2/5/2004 1/14/ /7/2005 7/16/2013 1/21/ /8/2005 7/16/ /16/ U U 0.01 U J U 0.01 U J U U a 26.3 J a 158 a a a J a a U U J a U U U U a a 0.58 a a 3.35 a a 0.57 a a UJ U UJ UJ U UJ J a a U 0.02 U 0.21 J a U 0.02 U UJ U UJ UJ U UJ 0.01 U R 0.01 U 0.01 U U 0.01 U 220 J 240 a UJ U UJ U U U 0.05 U 0.05 U 0.05 U 0.05 U J a a U 0.01 U J a 0.01 a 0.01 U U 0.01 U J U 0.01 U J 0.01 U 0.01 U U 0.01 U PCBs Aroclor1016 (PCB1016) 3.10E E E03 Aroclor1221 (PCB1221) 3.10E E E03 Aroclor1232 (PCB1232) 3.10E E E03 Aroclor1242 (PCB1242) 3.10E E E03 Aroclor1248 (PCB1248) 3.10E E E03 Aroclor1254 (PCB1254) 3.10E E E03 Aroclor1260 (PCB1260) 3.10E E E03 Total PCBs E E E U U UJ U U U UJ U U U UJ U U U UJ U U U UJ U U U UJ U U U UJ U U U UJ U Petrl Prod Ethylene glycol NV NV NV Propylene glycol NV NV NV 25 U 25 U Wet Alkalinity, total (as CaCO3) Ammonia E E E+00 Ammonia, field 1.90E E E+00 Unionized ammonia Bicarbonate (as CaCO3) Chloride 250 NV NV NV Cyanide (amenable) Cyanide (total) E E E02 Fluoride N/A N/A N/A Formaldehyde E E E+01 Nitrate (as N) 10 N/A N/A N/A Nitrite (as N) 1 N/A N/A N/A ph, lab s.u Sulfide Total dissolved solids (TDS) 500 Total kjeldahl nitrogen (TKN) de 7.2 def a 0.01 de 0.01 J de U 0.01 U U 0.50 U 8.2 J a 0.93 J 0.05 UJ 16.7 J 5.8 J FPARAM Memo32T2 T4 T6 6/7/2018

108 Table 4 Page 15 of 25 IU H Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s H H H H H H H H H H H H MW04757 MW05443 MW05443 MW05443 MW05443 MW05443 MW05443 MW05443 MW05452 MW05452 MW05452 MW15457 GW SSH17016 M20004 M10207 M20004 W CA120 M20503 MW05443 GW SSH282 M20526 MW05452 MW05452~7/16/2013 M /18/ /16/1998 7/14/2000 1/29/2004 2/5/2004 1/14/ /7/2005 7/16/2013 1/21/ /8/2005 7/16/ /16/1998 Criteria Conductivity, field umhos/cm Dissolved oxygen (DO), field Oxidation reduction potential (ORP) millivolts ph, field s.u Temperature, field Deg C Turbidity NTU Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A a a 9.58 a 9.89 a Footnotes: U Not detected at the associated reporting limit. J Estimated concentration. UJ Not detected; associated reporting limit is estimated. R Rejected b Exceedance of DRAFT 2017 Part 201 Generic Cleanup Criteria and s 9.06 b Exceedance of screening levels in the latest round of groundwater data for a given location Downgradient sampling location included in the groundwater evaluation discussion Not analyzed NV MDEQ VI screening deemed Not Volatile N/A Not analyzed in MDEQ VI screening Memo32T2 T4 T6 6/7/2018

109 Table 4 Page 16 of 25 IU H Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s Criteria Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A VOAs a b c d e f 1,1,1,2Tetrachloroethane E E E02 1,1,1Trichloroethane E E E+00 1,1,2,2Tetrachloroethane E E E03 1,1,2Trichloroethane E E E06 1,1Dichloroethane E E E02 1,1Dichloroethene E E E01 1,1Dichloropropene N/A N/A N/A 1,2,4Trichlorobenzene E E E02 1,2Dibromo3chloropropane (DBCP) E E E05 1,2Dibromoethane (Ethylene dibromide) E E E04 1,2Dichlorobenzene E E E+00 1,2Dichloroethane E E E03 1,2Dichloropropane E E E02 1,3Dichlorobenzene E E E02 1,3Dichloropropane N/A N/A N/A 1,4Dichlorobenzene E E E02 2,2Dichloropropane N/A N/A N/A 2Butanone (Methyl ethyl ketone) (MEK) E E E+01 2Hexanone E E E+00 4Methyl2pentanone (Methyl isobutyl ketone) (MIBK) E E E+00 Acetone E E E+02 Acetonitrile E E E+00 Acrolein E E E04 Acrylonitrile E E E02 Allyl chloride N/A N/A N/A Benzene E E E02 Bromodichloromethane E E E03 Bromoform E E E01 Bromomethane (Methyl bromide) E E E02 Carbon disulfide E E E+00 Carbon tetrachloride E E E02 Chlorobenzene E E E01 Chlorobromomethane N/A N/A N/A Chloroethane E E E+00 Chloroform (Trichloromethane) E E E03 Chloromethane (Methyl chloride) E E E01 Chloroprene N/A N/A N/A cis1,2dichloroethene E E E02 cis1,3dichloropropene NV NV NV cis1,4dichloro2butene N/A N/A N/A Cyclohexane E E E+01 Dibromochloromethane E E E03 Dibromomethane E E E02 Dichlorodifluoromethane (CFC12) E E E01 Ethyl methacrylate N/A N/A N/A Ethylbenzene E E E02 Iodomethane N/A N/A N/A Isopropyl benzene E E E03 m&pxylenes N/A N/A N/A Methyl acetate N/A N/A N/A Methyl acrylonitrile N/A N/A N/A Methyl cyclohexane N/A N/A N/A Methyl methacrylate N/A N/A N/A Methyl tert butyl ether (MTBE) E E E01 Methylene chloride E E E+00 Naphthalene E E E02 oxylene N/A N/A N/A Propionitrile (ethyl cyanide) N/A N/A N/A Styrene E E E01 Tetrachloroethene E E E02 Toluene E E E+00 trans1,2dichloroethene E E E01 trans1,3dichloropropene N/A N/A N/A trans1,4dichloro2butene N/A N/A N/A Trichloroethene E E E03 Trichlorofluoromethane (CFC11) E E E01 Trifluorotrichloroethane (CFC113) E E E+01 Vinyl acetate E E E+00 Vinyl chloride E E E02 Xylenes (total) E E E01 H H H H H H H H H H H H H H H MW15457 MW15457 MW15457 MW15457 MW15964 MW15964 MW15964 MW16357 MW16357 MW16357 MW16357 MW17661 MW17661 MW17661 MW17661 M30200 M20501 MW15457 GW SSH275 M30019 M10215 M20502 M10003 M20213 M20214Q M20504 M30022 M30047 M10206 H /13/2000 1/13/ /7/2005 7/15/ /30/1998 7/26/2000 1/14/ /17/1998 7/18/2000 7/18/2000 1/14/ /1/ /28/1998 7/14/ /17/2002 (Duplicate) U UJ U U U U UJ U U U U U U U UJ U U U U U U U UJ U U U U U U U UJ U U U U U U U UJ U U U U U UJ U R R U U UJ U U UJ U U U U UJ U U U U U U U UJ U U U U U UJ U U UJ U U UJ U U UJ U R R R R R R R 0.02 U 0.02 U R 0.02 U 0.02 UJ 0.02 U 0.02 U 0.02 U 0.02 U R R R R R R R 0.02 U R R R R R R R R R R R R R R R R R U UJ U U U U UJ U U U U U U U UJ U U U U U U U UJ U U U U U U U UJ U U U U U U U UJ U U U U U U U UJ U U U U U U U UJ U U U U U UJ U U U U UJ U U U U U U U UJ U U U U U U U UJ U U U U 0.01 UJ 0.01 UJ 0.01 U U U U UJ U U U U U U U UJ U U U U R R R U U U UJ U U U U U UJ U U UJ UJ U UJ UJ U U U UJ U U U U UJ UJ U U U U UJ U U U U R R UJ U UJ U U U U UJ U U U U U UJ U U U U UJ U U U U R R R U U U UJ U U U U U U U UJ U U U U U U UJ U U U U U U U UJ U U U U U U U UJ U U U U R R R U U U UJ U U U U U UJ U U UJ U U U U UJ U U U U Memo32T2 T4 T6 6/7/2018

110 Table 4 Page 17 of 25 IU H Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s SVOAs Criteria Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A H H H H H H H H H H H H H H H MW15457 MW15457 MW15457 MW15457 MW15964 MW15964 MW15964 MW16357 MW16357 MW16357 MW16357 MW17661 MW17661 MW17661 MW17661 M30200 M20501 MW15457 GW SSH275 M30019 M10215 M20502 M10003 M20213 M20214Q M20504 M30022 M30047 M10206 H /13/2000 1/13/ /7/2005 7/15/ /30/1998 7/26/2000 1/14/ /17/1998 7/18/2000 7/18/2000 1/14/ /1/ /28/1998 7/14/ /17/2002 (Duplicate) 0,0,0Triethylphosphorothioate N/A N/A N/A 1,2,4,5Tetrachlorobenzene E E E03 1,2,4Trichlorobenzene E E E02 1,2Dichlorobenzene E E E+00 1,3,5Trinitrobenzene N/A N/A N/A 1,3Dichlorobenzene E E E02 1,3Dinitrobenzene N/A N/A N/A 1,4Dichlorobenzene E E E02 1,4Naphthoquinone N/A N/A N/A 1Naphthylamine N/A N/A N/A 2,2'Oxybis(1chloropropane) (bis(2chloroisopropyl) ether) N/A N/A N/A 2,2'Oxybis(2chloropropane) (bis(2chloroisopropyl) ether) 2,3,4,6Tetrachlorophenol N/A N/A N/A 2,4,5Trichlorophenol NV NV NV 2,4,6Trichlorophenol NV NV NV 2,4Dichlorophenol NV NV NV 2,4Dimethylphenol NV NV NV 2,4Dinitrophenol NV NV NV 2,4Dinitrotoluene NV NV NV 2,6Dichlorophenol N/A N/A N/A 2,6Dinitrotoluene N/A N/A N/A 2Acetylaminofluorene N/A N/A N/A 2Chloronaphthalene N/A N/A N/A 2Chlorophenol E E E01 2Methylnaphthalene E E E01 2Methylphenol NV NV NV 2Naphthylamine N/A N/A N/A 2Nitroaniline N/A N/A N/A 2Nitrophenol E E E03 2Toluidine N/A N/A N/A 3&4Methylphenol N/A N/A N/A 3,3'Dichlorobenzidine NV NV NV 3,3Dimethylbenzidine N/A N/A N/A 3Methylcholanthrene N/A N/A N/A 3Nitroaniline N/A N/A N/A 4,6Dinitro2methylphenol NV NV NV 4Aminobiphenyl N/A N/A N/A 4Bromophenyl phenyl ether N/A N/A N/A 4Chloro3methylphenol NV NV NV 4Chloroaniline NV NV NV 4Chlorophenyl phenyl ether N/A N/A N/A 4Dimethylaminoazobenzene N/A N/A N/A 4Methylphenol N/A N/A N/A 4Nitroaniline N/A N/A N/A 4Nitrophenol N/A N/A N/A 5Nitro2toluidine N/A N/A N/A 7,12Dimethylbenz(a)anthracene N/A N/A N/A Acenaphthene E E E+00 Acenaphthylene E E E+00 Acetophenone E E E+01 Anthracene E E E02 Atrazine NV NV NV Benzaldehyde N/A N/A N/A Benzo(a)anthracene E E E03 Benzo(a)pyrene NV NV NV Benzo(b)fluoranthene NV NV NV Benzo(g,h,i)perylene NV NV NV Benzo(k)fluoranthene NV NV NV Benzyl alcohol NV NV NV Biphenyl (1,1Biphenyl) N/A N/A N/A bis(2chloroethoxy)methane N/A N/A N/A bis(2chloroethyl)ether E E E02 bis(2ethylhexyl)phthalate (DEHP) NV NV NV Butyl benzylphthalate (BBP) NV NV NV Caprolactam NV NV NV Carbazole NV NV NV Chlorobenzilate N/A N/A N/A Chrysene NV NV NV Diallate N/A N/A N/A Dibenz(a,h)anthracene NV NV NV Dibenzofuran E E E U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U U UJ 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U U UJ U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 UJ 0.01 U U U U U U U U U U U U 0.01 U 0.01 U 0.01 U U U U U U U U U U U U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 UJ U U U U U U U U U U U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U Memo32T2 T4 T6 6/7/2018

111 Table 4 Page 18 of 25 IU H Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s Criteria Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A Diethyl phthalate NV NV NV Dimethoate N/A N/A N/A Dimethyl phthalate NV NV NV Dinbutylphthalate (DBP) NV NV NV Dinoctyl phthalate (DnOP) E E E02 Dinoseb NV NV NV Diphenylamine N/A N/A N/A Disulfoton N/A N/A N/A Ethyl methanesulfonate N/A N/A N/A Ethyl parathion N/A N/A N/A Famphur N/A N/A N/A Fluoranthene NV NV NV Fluorene E E E+00 Hexachlorobenzene E E E04 Hexachlorobutadiene E E E03 Hexachlorocyclopentadiene E E E04 Hexachloroethane E E E02 Hexachloropropene N/A N/A N/A Indeno(1,2,3cd)pyrene NV NV NV Isodrin N/A N/A N/A Isophorone NV NV NV Isosafrole N/A N/A N/A Kepone N/A N/A N/A Methapyrilene N/A N/A N/A Methyl methanesulfonate N/A N/A N/A Methyl parathion NV NV NV Naphthalene E E E02 Nitrobenzene E E E01 NNitrosodiethylamine N/A N/A N/A NNitrosodimethylamine N/A N/A N/A NNitrosodinbutylamine N/A N/A N/A NNitrosodinpropylamine NV NV NV NNitrosodiphenylamine NV NV NV NNitrosomethylethylamine N/A N/A N/A NNitrosopiperidine N/A N/A N/A NNitrosopyrrolidine N/A N/A N/A Pentachlorobenzene E E E04 Pentachloronitrobenzene E E E01 Pentachlorophenol NV NV NV Phenacetin N/A N/A N/A Phenanthrene E E E04 Phenol NV NV NV Phorate N/A N/A N/A pphenylenediamine N/A N/A N/A Pronamide N/A N/A N/A Pyrene E E E01 Safrole N/A N/A N/A Thionazin (O,OdiethylO2pyrazinyl phosphorothioate) N/A N/A N/A H H H H H H H H H H H H H H H MW15457 MW15457 MW15457 MW15457 MW15964 MW15964 MW15964 MW16357 MW16357 MW16357 MW16357 MW17661 MW17661 MW17661 MW17661 M30200 M20501 MW15457 GW SSH275 M30019 M10215 M20502 M10003 M20213 M20214Q M20504 M30022 M30047 M10206 H /13/2000 1/13/ /7/2005 7/15/ /30/1998 7/26/2000 1/14/ /17/1998 7/18/2000 7/18/2000 1/14/ /1/ /28/1998 7/14/ /17/2002 (Duplicate) 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U U UJ 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 UJ 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.05 U 0.05 U 0.05 U U U U U U U U U 0.05 U 0.05 U 0.05 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 UJ 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U U U Metals Aluminum 0.05 NV NV NV Aluminum (dissolved) 0.05 NV NV NV Antimony NV NV NV Antimony (dissolved) NV NV NV Arsenic 0.01 NV NV NV Arsenic (dissolved) 0.01 NV NV NV Barium 2 N/A N/A N/A Barium (dissolved) 2 NV NV NV Beryllium NV NV NV Beryllium (dissolved) NV NV NV Cadmium NV NV NV Cadmium (dissolved) NV NV NV Calcium NV NV NV Calcium (dissolved) NV NV NV Chromium 0.1 NV NV NV Chromium (dissolved) 0.1 NV NV NV Chromium III (trivalent) 0.1 N/A N/A N/A Chromium VI (hexavalent) 0.1 NV NV NV Chromium VI (hexavalent) (dissolved) 0.1 NV NV NV Cobalt NV NV NV 17.3 a 0.05 U 36.5 a 9.67 a J a 1.51 a 5.39 a 5.86 a 0.05 U 29.9 a 2.04 a 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U J a 0.05 U 0.05 U 0.05 UJ 0.05 U 0.05 U 0.05 U 0.05 UJ 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U U a U U J a J J U J U J J U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U a U U U a a U U 0.01 U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U a 0.01 U a Memo32T2 T4 T6 6/7/2018

112 Table 4 Page 19 of 25 IU H Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s Criteria Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A Cobalt (dissolved) NV NV NV Copper 1 NV NV NV Copper (dissolved) 1 NV NV NV Iron 0.3 NV NV NV Iron (dissolved) 0.3 NV NV NV Lead N/A N/A N/A Lead (dissolved) NV NV NV Magnesium 330 NV NV NV Magnesium (dissolved) 330 NV NV NV Manganese 0.05 NV NV NV Manganese (dissolved) 0.05 NV NV NV Mercury E E E04 Mercury (dissolved) E E E04 Nickel NV NV NV Nickel (dissolved) NV NV NV Potassium NV NV NV Potassium (dissolved) NV NV NV Selenium 0.05 NV NV NV Selenium (dissolved) 0.05 NV NV NV Silver 0.1 NV NV NV Silver (dissolved) 0.1 NV NV NV Sodium 230 NV NV NV Sodium (dissolved) 230 NV NV NV Thallium NV NV NV Thallium (dissolved) NV NV NV Tin NV NV NV Tin (dissolved) NV NV NV Vanadium NV NV NV Vanadium (dissolved) NV NV NV Zinc 5 NV NV NV Zinc (dissolved) 5 NV NV NV H H H H H H H H H H H H H H H MW15457 MW15457 MW15457 MW15457 MW15964 MW15964 MW15964 MW16357 MW16357 MW16357 MW16357 MW17661 MW17661 MW17661 MW17661 M30200 M20501 MW15457 GW SSH275 M30019 M10215 M20502 M10003 M20213 M20214Q M20504 M30022 M30047 M10206 H /13/2000 1/13/ /7/2005 7/15/ /30/1998 7/26/2000 1/14/ /17/1998 7/18/2000 7/18/2000 1/14/ /1/ /28/1998 7/14/ /17/2002 (Duplicate) 0.01 U 0.01 U 0.01 U U U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 49.9 a 7.71 a 44.4 a J a a U a a U U a a U a a U U J a U U U U J a J a a a a a a a a a a a J a a a a a a a a U U U U U U a 0.02 U 0.06 a a 0.02 U 0.02 U U a a U 0.02 U 0.02 U 0.02 U 0.02 U a a U UJ UJ U UJ UJ 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U a 0.01 U a a 0.01 U 0.01 U a a 0.01 U a J a 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U J a 0.01 U 0.01 U J J U U U 0.01 U 0.01 U 0.01 U J J 0.01 U 0.01 U PCBs Aroclor1016 (PCB1016) 3.10E E E03 Aroclor1221 (PCB1221) 3.10E E E03 Aroclor1232 (PCB1232) 3.10E E E03 Aroclor1242 (PCB1242) 3.10E E E03 Aroclor1248 (PCB1248) 3.10E E E03 Aroclor1254 (PCB1254) 3.10E E E03 Aroclor1260 (PCB1260) 3.10E E E03 Total PCBs E E E U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U Petrl Prod Ethylene glycol NV NV NV Propylene glycol NV NV NV Wet Alkalinity, total (as CaCO3) Ammonia E E E+00 Ammonia, field 1.90E E E+00 Unionized ammonia Bicarbonate (as CaCO3) Chloride 250 NV NV NV Cyanide (amenable) Cyanide (total) E E E02 Fluoride N/A N/A N/A Formaldehyde E E E+01 Nitrate (as N) 10 N/A N/A N/A Nitrite (as N) 1 N/A N/A N/A ph, lab s.u Sulfide Total dissolved solids (TDS) 500 Total kjeldahl nitrogen (TKN) 1.4 J U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.05 U U 0.05 U 0.05 U 0.05 U 0.05 UJ 0.05 U 0.05 U FPARAM Memo32T2 T4 T6 6/7/2018

113 Table 4 Page 20 of 25 IU H Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s Criteria Conductivity, field umhos/cm Dissolved oxygen (DO), field Oxidation reduction potential (ORP) millivolts ph, field s.u Temperature, field Deg C Turbidity NTU Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A H H H H H H H H H H H H H H H MW15457 MW15457 MW15457 MW15457 MW15964 MW15964 MW15964 MW16357 MW16357 MW16357 MW16357 MW17661 MW17661 MW17661 MW17661 M30200 M20501 MW15457 GW SSH275 M30019 M10215 M20502 M10003 M20213 M20214Q M20504 M30022 M30047 M10206 H /13/2000 1/13/ /7/2005 7/15/ /30/1998 7/26/2000 1/14/ /17/1998 7/18/2000 7/18/2000 1/14/ /1/ /28/1998 7/14/ /17/2002 (Duplicate) Footnotes: U Not detected at the associated reporting limit. J Estimated concentration. UJ Not detected; associated reporting limit is estimated. R Rejected b Exceedance of DRAFT 2017 Part 201 Generic Cleanup Criteria and s 9.06 b Exceedance of screening levels in the latest round of groundwater data for a given location Downgradient sampling location included in the groundwater evaluation discussion Not analyzed NV MDEQ VI screening deemed Not Volatile N/A Not analyzed in MDEQ VI screening Memo32T2 T4 T6 6/7/2018

114 Table 4 Page 21 of 25 IU H Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s Criteria Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A VOAs a b c d e f 1,1,1,2Tetrachloroethane E E E02 1,1,1Trichloroethane E E E+00 1,1,2,2Tetrachloroethane E E E03 1,1,2Trichloroethane E E E06 1,1Dichloroethane E E E02 1,1Dichloroethene E E E01 1,1Dichloropropene N/A N/A N/A 1,2,4Trichlorobenzene E E E02 1,2Dibromo3chloropropane (DBCP) E E E05 1,2Dibromoethane (Ethylene dibromide) E E E04 1,2Dichlorobenzene E E E+00 1,2Dichloroethane E E E03 1,2Dichloropropane E E E02 1,3Dichlorobenzene E E E02 1,3Dichloropropane N/A N/A N/A 1,4Dichlorobenzene E E E02 2,2Dichloropropane N/A N/A N/A 2Butanone (Methyl ethyl ketone) (MEK) E E E+01 2Hexanone E E E+00 4Methyl2pentanone (Methyl isobutyl ketone) (MIBK) E E E+00 Acetone E E E+02 Acetonitrile E E E+00 Acrolein E E E04 Acrylonitrile E E E02 Allyl chloride N/A N/A N/A Benzene E E E02 Bromodichloromethane E E E03 Bromoform E E E01 Bromomethane (Methyl bromide) E E E02 Carbon disulfide E E E+00 Carbon tetrachloride E E E02 Chlorobenzene E E E01 Chlorobromomethane N/A N/A N/A Chloroethane E E E+00 Chloroform (Trichloromethane) E E E03 Chloromethane (Methyl chloride) E E E01 Chloroprene N/A N/A N/A cis1,2dichloroethene E E E02 cis1,3dichloropropene NV NV NV cis1,4dichloro2butene N/A N/A N/A Cyclohexane E E E+01 Dibromochloromethane E E E03 Dibromomethane E E E02 Dichlorodifluoromethane (CFC12) E E E01 Ethyl methacrylate N/A N/A N/A Ethylbenzene E E E02 Iodomethane N/A N/A N/A Isopropyl benzene E E E03 m&pxylenes N/A N/A N/A Methyl acetate N/A N/A N/A Methyl acrylonitrile N/A N/A N/A Methyl cyclohexane N/A N/A N/A Methyl methacrylate N/A N/A N/A Methyl tert butyl ether (MTBE) E E E01 Methylene chloride E E E+00 Naphthalene E E E02 oxylene N/A N/A N/A Propionitrile (ethyl cyanide) N/A N/A N/A Styrene E E E01 Tetrachloroethene E E E02 Toluene E E E+00 trans1,2dichloroethene E E E01 trans1,3dichloropropene N/A N/A N/A trans1,4dichloro2butene N/A N/A N/A Trichloroethene E E E03 Trichlorofluoromethane (CFC11) E E E01 Trifluorotrichloroethane (CFC113) E E E+01 Vinyl acetate E E E+00 Vinyl chloride E E E02 Xylenes (total) E E E01 H H H H H H H H H H H H H MW17661 MW17661 MW17661 TMW04356 TMW05447 TMW05447 TMW05447A TMW05454 TMW05457 TMW06047 TMW06047B TMW06056A TMW06552 M50134 M20506 MW17661 H70110 H60016 H60021Q H80141 H40004 H50141 H60018 H70111 H70105 M /17/2002 1/17/ /7/ /20/ /18/ /18/ /18/ /17/ /17/ /18/ /20/ /19/2002 1/24/2005 (Duplicate) Memo32T2 T4 T6 6/7/2018

115 Table 4 Page 22 of 25 IU H Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s SVOAs Criteria Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A H H H H H H H H H H H H H MW17661 MW17661 MW17661 TMW04356 TMW05447 TMW05447 TMW05447A TMW05454 TMW05457 TMW06047 TMW06047B TMW06056A TMW06552 M50134 M20506 MW17661 H70110 H60016 H60021Q H80141 H40004 H50141 H60018 H70111 H70105 M /17/2002 1/17/ /7/ /20/ /18/ /18/ /18/ /17/ /17/ /18/ /20/ /19/2002 1/24/2005 (Duplicate) 0,0,0Triethylphosphorothioate N/A N/A N/A 1,2,4,5Tetrachlorobenzene E E E03 1,2,4Trichlorobenzene E E E02 1,2Dichlorobenzene E E E+00 1,3,5Trinitrobenzene N/A N/A N/A 1,3Dichlorobenzene E E E02 1,3Dinitrobenzene N/A N/A N/A 1,4Dichlorobenzene E E E02 1,4Naphthoquinone N/A N/A N/A 1Naphthylamine N/A N/A N/A 2,2'Oxybis(1chloropropane) (bis(2chloroisopropyl) ether) N/A N/A N/A 2,2'Oxybis(2chloropropane) (bis(2chloroisopropyl) ether) 2,3,4,6Tetrachlorophenol N/A N/A N/A 2,4,5Trichlorophenol NV NV NV 2,4,6Trichlorophenol NV NV NV 2,4Dichlorophenol NV NV NV 2,4Dimethylphenol NV NV NV 2,4Dinitrophenol NV NV NV 2,4Dinitrotoluene NV NV NV 2,6Dichlorophenol N/A N/A N/A 2,6Dinitrotoluene N/A N/A N/A 2Acetylaminofluorene N/A N/A N/A 2Chloronaphthalene N/A N/A N/A 2Chlorophenol E E E01 2Methylnaphthalene E E E01 2Methylphenol NV NV NV 2Naphthylamine N/A N/A N/A 2Nitroaniline N/A N/A N/A 2Nitrophenol E E E03 2Toluidine N/A N/A N/A 3&4Methylphenol N/A N/A N/A 3,3'Dichlorobenzidine NV NV NV 3,3Dimethylbenzidine N/A N/A N/A 3Methylcholanthrene N/A N/A N/A 3Nitroaniline N/A N/A N/A 4,6Dinitro2methylphenol NV NV NV 4Aminobiphenyl N/A N/A N/A 4Bromophenyl phenyl ether N/A N/A N/A 4Chloro3methylphenol NV NV NV 4Chloroaniline NV NV NV 4Chlorophenyl phenyl ether N/A N/A N/A 4Dimethylaminoazobenzene N/A N/A N/A 4Methylphenol N/A N/A N/A 4Nitroaniline N/A N/A N/A 4Nitrophenol N/A N/A N/A 5Nitro2toluidine N/A N/A N/A 7,12Dimethylbenz(a)anthracene N/A N/A N/A Acenaphthene E E E+00 Acenaphthylene E E E+00 Acetophenone E E E+01 Anthracene E E E02 Atrazine NV NV NV Benzaldehyde N/A N/A N/A Benzo(a)anthracene E E E03 Benzo(a)pyrene NV NV NV Benzo(b)fluoranthene NV NV NV Benzo(g,h,i)perylene NV NV NV Benzo(k)fluoranthene NV NV NV Benzyl alcohol NV NV NV Biphenyl (1,1Biphenyl) N/A N/A N/A bis(2chloroethoxy)methane N/A N/A N/A bis(2chloroethyl)ether E E E02 bis(2ethylhexyl)phthalate (DEHP) NV NV NV Butyl benzylphthalate (BBP) NV NV NV Caprolactam NV NV NV Carbazole NV NV NV Chlorobenzilate N/A N/A N/A Chrysene NV NV NV Diallate N/A N/A N/A Dibenz(a,h)anthracene NV NV NV Dibenzofuran E E E U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U Memo32T2 T4 T6 6/7/2018

116 Table 4 Page 23 of 25 IU H Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s Criteria Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A Diethyl phthalate NV NV NV Dimethoate N/A N/A N/A Dimethyl phthalate NV NV NV Dinbutylphthalate (DBP) NV NV NV Dinoctyl phthalate (DnOP) E E E02 Dinoseb NV NV NV Diphenylamine N/A N/A N/A Disulfoton N/A N/A N/A Ethyl methanesulfonate N/A N/A N/A Ethyl parathion N/A N/A N/A Famphur N/A N/A N/A Fluoranthene NV NV NV Fluorene E E E+00 Hexachlorobenzene E E E04 Hexachlorobutadiene E E E03 Hexachlorocyclopentadiene E E E04 Hexachloroethane E E E02 Hexachloropropene N/A N/A N/A Indeno(1,2,3cd)pyrene NV NV NV Isodrin N/A N/A N/A Isophorone NV NV NV Isosafrole N/A N/A N/A Kepone N/A N/A N/A Methapyrilene N/A N/A N/A Methyl methanesulfonate N/A N/A N/A Methyl parathion NV NV NV Naphthalene E E E02 Nitrobenzene E E E01 NNitrosodiethylamine N/A N/A N/A NNitrosodimethylamine N/A N/A N/A NNitrosodinbutylamine N/A N/A N/A NNitrosodinpropylamine NV NV NV NNitrosodiphenylamine NV NV NV NNitrosomethylethylamine N/A N/A N/A NNitrosopiperidine N/A N/A N/A NNitrosopyrrolidine N/A N/A N/A Pentachlorobenzene E E E04 Pentachloronitrobenzene E E E01 Pentachlorophenol NV NV NV Phenacetin N/A N/A N/A Phenanthrene E E E04 Phenol NV NV NV Phorate N/A N/A N/A pphenylenediamine N/A N/A N/A Pronamide N/A N/A N/A Pyrene E E E01 Safrole N/A N/A N/A Thionazin (O,OdiethylO2pyrazinyl phosphorothioate) N/A N/A N/A H H H H H H H H H H H H H MW17661 MW17661 MW17661 TMW04356 TMW05447 TMW05447 TMW05447A TMW05454 TMW05457 TMW06047 TMW06047B TMW06056A TMW06552 M50134 M20506 MW17661 H70110 H60016 H60021Q H80141 H40004 H50141 H60018 H70111 H70105 M /17/2002 1/17/ /7/ /20/ /18/ /18/ /18/ /17/ /17/ /18/ /20/ /19/2002 1/24/2005 (Duplicate) U U UJ U U U U U U U U U U U U U U U U U Metals Aluminum 0.05 NV NV NV Aluminum (dissolved) 0.05 NV NV NV Antimony NV NV NV Antimony (dissolved) NV NV NV Arsenic 0.01 NV NV NV Arsenic (dissolved) 0.01 NV NV NV Barium 2 N/A N/A N/A Barium (dissolved) 2 NV NV NV Beryllium NV NV NV Beryllium (dissolved) NV NV NV Cadmium NV NV NV Cadmium (dissolved) NV NV NV Calcium NV NV NV Calcium (dissolved) NV NV NV Chromium 0.1 NV NV NV Chromium (dissolved) 0.1 NV NV NV Chromium III (trivalent) 0.1 N/A N/A N/A Chromium VI (hexavalent) 0.1 NV NV NV Chromium VI (hexavalent) (dissolved) 0.1 NV NV NV Cobalt NV NV NV a 0.05 U J U U 1.55 a Memo32T2 T4 T6 6/7/2018

117 Table 4 Page 24 of 25 IU H Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s Criteria Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A Cobalt (dissolved) NV NV NV Copper 1 NV NV NV Copper (dissolved) 1 NV NV NV Iron 0.3 NV NV NV Iron (dissolved) 0.3 NV NV NV Lead N/A N/A N/A Lead (dissolved) NV NV NV Magnesium 330 NV NV NV Magnesium (dissolved) 330 NV NV NV Manganese 0.05 NV NV NV Manganese (dissolved) 0.05 NV NV NV Mercury E E E04 Mercury (dissolved) E E E04 Nickel NV NV NV Nickel (dissolved) NV NV NV Potassium NV NV NV Potassium (dissolved) NV NV NV Selenium 0.05 NV NV NV Selenium (dissolved) 0.05 NV NV NV Silver 0.1 NV NV NV Silver (dissolved) 0.1 NV NV NV Sodium 230 NV NV NV Sodium (dissolved) 230 NV NV NV Thallium NV NV NV Thallium (dissolved) NV NV NV Tin NV NV NV Tin (dissolved) NV NV NV Vanadium NV NV NV Vanadium (dissolved) NV NV NV Zinc 5 NV NV NV Zinc (dissolved) 5 NV NV NV H H H H H H H H H H H H H MW17661 MW17661 MW17661 TMW04356 TMW05447 TMW05447 TMW05447A TMW05454 TMW05457 TMW06047 TMW06047B TMW06056A TMW06552 M50134 M20506 MW17661 H70110 H60016 H60021Q H80141 H40004 H50141 H60018 H70111 H70105 M /17/2002 1/17/ /7/ /20/ /18/ /18/ /18/ /17/ /17/ /18/ /20/ /19/2002 1/24/2005 (Duplicate) U a a J a J PCBs Aroclor1016 (PCB1016) 3.10E E E03 Aroclor1221 (PCB1221) 3.10E E E03 Aroclor1232 (PCB1232) 3.10E E E03 Aroclor1242 (PCB1242) 3.10E E E03 Aroclor1248 (PCB1248) 3.10E E E03 Aroclor1254 (PCB1254) 3.10E E E03 Aroclor1260 (PCB1260) 3.10E E E03 Total PCBs E E E03 Petrl Prod Ethylene glycol NV NV NV Propylene glycol NV NV NV Wet Alkalinity, total (as CaCO3) Ammonia E E E+00 Ammonia, field 1.90E E E+00 Unionized ammonia Bicarbonate (as CaCO3) Chloride 250 NV NV NV Cyanide (amenable) Cyanide (total) E E E02 Fluoride N/A N/A N/A Formaldehyde E E E+01 Nitrate (as N) 10 N/A N/A N/A Nitrite (as N) 1 N/A N/A N/A ph, lab s.u Sulfide Total dissolved solids (TDS) 500 Total kjeldahl nitrogen (TKN) U 0.05 U de 4.45 de 4.23 de 1.96 de b 2 U 2 U 2 U a FPARAM Memo32T2 T4 T6 6/7/2018

118 Table 4 Page 25 of 25 IU H Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s Criteria Conductivity, field umhos/cm Dissolved oxygen (DO), field Oxidation reduction potential (ORP) millivolts ph, field s.u Temperature, field Deg C Turbidity NTU Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A H H H H H H H H H H H H H MW17661 MW17661 MW17661 TMW04356 TMW05447 TMW05447 TMW05447A TMW05454 TMW05457 TMW06047 TMW06047B TMW06056A TMW06552 M50134 M20506 MW17661 H70110 H60016 H60021Q H80141 H40004 H50141 H60018 H70111 H70105 M /17/2002 1/17/ /7/ /20/ /18/ /18/ /18/ /17/ /17/ /18/ /20/ /19/2002 1/24/2005 (Duplicate) b a a a 10.9 a a a b Footnotes: U Not detected at the associated reporting limit. J Estimated concentration. UJ Not detected; associated reporting limit is estimated. R Rejected b Exceedance of DRAFT 2017 Part 201 Generic Cleanup Criteria and s 9.06 b Exceedance of screening levels in the latest round of groundwater data for a given location Downgradient sampling location included in the groundwater evaluation discussion Not analyzed NV MDEQ VI screening deemed Not Volatile N/A Not analyzed in MDEQ VI screening b Memo32T2 T4 T6 6/7/2018

119 Table 5 Page 1 of 12 IU I Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 I I I I I I I I I I I I I I I I I I MW1S MW2S MW2S MW4S MW5S MW34 MW06445 MW06445 MW06445 MW06445 MW06939 MW06939 MW06939 MW06939 MW06951 MW06951 MW06951 MW06951 M50000 M40001 M40002Q M40003 H80142 M80004 M30026 M20200 M50548 MW06445 M30027 M20231 M20509 M20510Q M30025 M10204 M20516 MW /15/ /16/ /16/ /16/ /18/ /19/ /3/1998 7/12/2000 3/29/ /8/ /4/1998 7/27/2000 1/17/2005 1/17/ /3/1998 7/12/2000 1/19/ /8/2005 (Duplicate) (Duplicate) Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation Flammability and VOAs a b c d e 1,1,1,2Tetrachloroethane U U U 1,1,1Trichloroethane U U U U U U 1,1,2,2Tetrachloroethane U U U U U U 1,1,2Trichloroethane U U U U U U 1,1Dichloroethane U U U U U 1,1Dichloroethene U U U U U U 1,1Dichloropropene U U UJ 1,2Dibromo3chloropropane (DBCP) U U U 1,2Dibromoethane (Ethylene dibromide) U U U 1,2Dichlorobenzene U U U 1,2Dichloroethane U U U U U U 1,2Dichloropropane U U U U U U 1,3Dichlorobenzene U U U 1,3Dichloropropane U U U 1,4Dichlorobenzene U U U 2,2Dichloropropane U U U 2Butanone (Methyl ethyl ketone) (MEK) R R R R R R 2Hexanone U 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U 4Methyl2pentanone (Methyl isobutyl ketone) (MIBK) R R R R R R Acetone R R R R R R Acetonitrile U U U Acrolein R R R Acrylonitrile UJ 0.02 U 0.02 UJ Allyl chloride UJ U UJ Benzene U U U U Bromodichloromethane U U U U U U Bromoform U U U U U U Bromomethane (Methyl bromide) U U U U U U Carbon disulfide J U U U U Carbon tetrachloride U U U U U U Chlorobenzene U U U U U U Chlorobromomethane U U U Chloroethane U U U U U U Chloroform (Trichloromethane) U U U U U U Chloromethane (Methyl chloride) U U U J U U Chloroprene 0.01 U 0.01 U 0.01 U cis1,2dichloroethene U U U U U U cis1,3dichloropropene U U U U U U cis1,4dichloro2butene 0.01 UJ 0.01 U 0.01 UJ Dibromochloromethane U U U U U U Dibromomethane U U U Dichlorodifluoromethane (CFC12) U U UJ Ethyl methacrylate U UJ U Ethylbenzene U U U U U U Iodomethane UJ U UJ m&pxylenes U U U U U U Methyl acrylonitrile UJ U UJ Methyl methacrylate U UJ U Methylene chloride U U U U U U Naphthalene U U U oxylene U U U U U U Propionitrile (ethyl cyanide) R R R Styrene U U U U U U Tetrachloroethene U U U U U U Toluene U U U U U U trans1,2dichloroethene U U U U U U trans1,3dichloropropene U U U U U U trans1,4dichloro2butene 0.01 UJ 0.01 U 0.01 U Trichloroethene U U U U U U Trichlorofluoromethane (CFC11) U U U Vinyl acetate UJ UJ U Vinyl chloride U U U U U U SVOAs 0,0,0Triethylphosphorothioate 0.01 U 0.01 U 0.01 U 1,2,4,5Tetrachlorobenzene U 0.01 U 0.01 U 1,2,4Trichlorobenzene U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 1,2Dichlorobenzene U 0.01 U 0.01 U U 1,3,5Trinitrobenzene U U U Memo32 T1 T3 T5 6/7/2018

120 Table 5 Page 2 of 12 IU I Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 I I I I I I I I I I I I I I I I I I MW1S MW2S MW2S MW4S MW5S MW34 MW06445 MW06445 MW06445 MW06445 MW06939 MW06939 MW06939 MW06939 MW06951 MW06951 MW06951 MW06951 M50000 M40001 M40002Q M40003 H80142 M80004 M30026 M20200 M50548 MW06445 M30027 M20231 M20509 M20510Q M30025 M10204 M20516 MW /15/ /16/ /16/ /16/ /18/ /19/ /3/1998 7/12/2000 3/29/ /8/ /4/1998 7/27/2000 1/17/2005 1/17/ /3/1998 7/12/2000 1/19/ /8/2005 (Duplicate) (Duplicate) Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation Flammability and 1,3Dichlorobenzene U 0.01 U 0.01 U U 1,3Dinitrobenzene 0.01 U 0.01 U 0.01 U 1,4Dichlorobenzene U 0.01 U 0.01 U U 1,4Naphthoquinone 0.01 U 0.01 U 0.01 U 1Naphthylamine 0.01 U 0.01 U 0.01 U 2,2'Oxybis(1chloropropane) (bis(2chloroisopropyl) ether) 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 2,2'Oxybis(2chloropropane) (bis(2chloroisopropyl) ether) U 2,3,4,6Tetrachlorophenol 0.01 U 0.01 U 0.01 U 2,4,5Trichlorophenol U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 2,4,6Trichlorophenol U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 2,4Dichlorophenol U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 2,4Dimethylphenol U 0.01 U U 0.01 U U 2,4Dinitrophenol U U U U U U U 2,4Dinitrotoluene U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 2,6Dichlorophenol 0.01 U 0.01 U 0.01 U 2,6Dinitrotoluene 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 2Acetylaminofluorene 0.01 U 0.01 U 0.01 U 2Chloronaphthalene U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 2Chlorophenol U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 2Methylnaphthalene U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 2Methylphenol U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 2Naphthylamine 0.01 U 0.01 U 0.01 U 2Nitroaniline U U U U U U U 2Nitrophenol U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 2Toluidine 0.01 U 0.01 U 0.01 U 3&4Methylphenol U 0.01 U J 0.01 U 0.01 U 3,3'Dichlorobenzidine U U U U U U U 3,3Dimethylbenzidine U U U 3Methylcholanthrene 0.01 U 0.01 U 0.01 U 3Nitroaniline U U U U U U U 4,6Dinitro2methylphenol U U U U U U U 4Aminobiphenyl 0.01 U 0.01 U 0.01 U 4Bromophenyl phenyl ether 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 4Chloro3methylphenol U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 4Chloroaniline 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 4Chlorophenyl phenyl ether 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 4Dimethylaminoazobenzene 0.01 U 0.01 U 0.01 U 4Methylphenol U 4Nitroaniline U U U U U U U 4Nitrophenol U U U U U U U 5Nitro2toluidine 0.01 U 0.01 U 0.01 U 7,12Dimethylbenz(a)anthracene 0.01 U 0.01 U 0.01 U Acenaphthene U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U Acenaphthylene U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U Acetophenone U 0.01 U 0.01 U Anthracene U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U Benzo(a)anthracene U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U Benzo(a)pyrene U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U Benzo(b)fluoranthene U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U Benzo(g,h,i)perylene U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U Benzo(k)fluoranthene U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U Benzyl alcohol U 0.01 UJ 0.01 UJ bis(2chloroethoxy)methane 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U bis(2chloroethyl)ether U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U bis(2ethylhexyl)phthalate (DEHP) U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U Butyl benzylphthalate (BBP) U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U Carbazole U 0.01 U 0.01 U U Chlorobenzilate 0.01 U 0.01 U 0.01 U Chrysene U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U Diallate 0.01 U 0.01 U 0.01 U Dibenz(a,h)anthracene U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U Dibenzofuran U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U Diethyl phthalate U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U Dimethoate 0.01 U 0.01 U 0.01 U Dimethyl phthalate U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U Dinbutylphthalate (DBP) U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U Dinoctyl phthalate (DnOP) U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U Dinoseb U U U Diphenylamine 0.01 U 0.01 U 0.01 U Disulfoton 0.01 U 0.01 U 0.01 U Ethyl methanesulfonate 0.01 U 0.01 U 0.01 U Memo32 T1 T3 T5 6/7/2018

121 Table 5 Page 3 of 12 IU I Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 I I I I I I I I I I I I I I I I I I MW1S MW2S MW2S MW4S MW5S MW34 MW06445 MW06445 MW06445 MW06445 MW06939 MW06939 MW06939 MW06939 MW06951 MW06951 MW06951 MW06951 M50000 M40001 M40002Q M40003 H80142 M80004 M30026 M20200 M50548 MW06445 M30027 M20231 M20509 M20510Q M30025 M10204 M20516 MW /15/ /16/ /16/ /16/ /18/ /19/ /3/1998 7/12/2000 3/29/ /8/ /4/1998 7/27/2000 1/17/2005 1/17/ /3/1998 7/12/2000 1/19/ /8/2005 (Duplicate) (Duplicate) Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation Flammability and Ethyl parathion 0.01 U 0.01 U 0.01 U Famphur 0.01 U 0.01 U 0.01 U Fluoranthene U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U Fluorene U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U Hexachlorobenzene U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U Hexachlorobutadiene U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U Hexachlorocyclopentadiene U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U Hexachloroethane U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U Hexachloropropene 0.01 U 0.01 U 0.01 U Indeno(1,2,3cd)pyrene U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U Isodrin 0.01 U 0.01 U 0.01 U Isophorone U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U Isosafrole 0.01 U 0.01 U 0.01 U Kepone 0.1 U 0.1 U 0.1 U Methapyrilene 0.1 U 0.1 U 0.1 U Methyl methanesulfonate 0.01 U 0.01 U 0.01 U Methyl parathion U 0.01 U 0.01 U Naphthalene U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U Nitrobenzene U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U NNitrosodiethylamine 0.01 U 0.01 U 0.01 U NNitrosodimethylamine U U U NNitrosodinbutylamine 0.01 U 0.01 U 0.01 U NNitrosodinpropylamine U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U NNitrosodiphenylamine U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U NNitrosomethylethylamine 0.01 U 0.01 U 0.01 U NNitrosopiperidine 0.01 U 0.01 U 0.01 U NNitrosopyrrolidine 0.01 U 0.01 U 0.01 U Pentachlorobenzene U 0.01 U 0.01 U Pentachloronitrobenzene U 0.05 U 0.05 U Pentachlorophenol (1) U U U U U U U Phenacetin 0.05 U 0.05 U 0.05 U Phenanthrene U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U Phenol U 0.01 U J 0.01 U U Phorate 0.01 U 0.01 U 0.01 U pphenylenediamine 0.01 UJ 0.01 UJ 0.01 UJ Pronamide 0.01 U 0.01 U 0.01 U Pyrene U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U Safrole 0.01 U 0.01 U 0.01 U Thionazin (O,OdiethylO2pyrazinyl phosphorothioate) U U U Metals Aluminum b 2.34 b J b 39.1 b 25.7 b 0.16 b 0.12 b 1.18 b 0.22 b 0.05 U Aluminum (dissolved) b b 1.86 b b 0.05 U 0.05 U Antimony U 0.05 U J b 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U Antimony (dissolved) U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U Arsenic J J ab ab J J Arsenic (dissolved) U J ab U Barium (1) J Barium (dissolved) (1) J Beryllium (1) U U U U J U U U U U Beryllium (dissolved) (1) U U U U U U Cadmium (1) U U U U U U U U U U Cadmium (dissolved) (1) U U U U U U Calcium J 98 Calcium (dissolved) Chromium U UJ b U U Chromium (dissolved) U U U 0.01 U U U Chromium VI (hexavalent) U 0.01 U 0.01 U Cobalt U Cobalt (dissolved) U 0.01 U 0.01 U Copper (1) a J 0.01 U a a 0.01 U 0.01 U 0.01 U J 0.01 U Copper (dissolved) (1) U 0.01 U 0.01 U J 0.01 U 0.01 U Iron b 52.2 J b 5.12 b Iron (dissolved) J b 1.65 J b Lead (1) ab b U ab ab U U b J U Lead (dissolved) (1) U U U U U U Manganese (1) b J b J b J b ab J b b Manganese (dissolved) (1) U J U J 5.82 ab J b Memo32 T1 T3 T5 6/7/2018

122 Table 5 Page 4 of 12 IU I Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 I I I I I I I I I I I I I I I I I I MW1S MW2S MW2S MW4S MW5S MW34 MW06445 MW06445 MW06445 MW06445 MW06939 MW06939 MW06939 MW06939 MW06951 MW06951 MW06951 MW06951 M50000 M40001 M40002Q M40003 H80142 M80004 M30026 M20200 M50548 MW06445 M30027 M20231 M20509 M20510Q M30025 M10204 M20516 MW /15/ /16/ /16/ /16/ /18/ /19/ /3/1998 7/12/2000 3/29/ /8/ /4/1998 7/27/2000 1/17/2005 1/17/ /3/1998 7/12/2000 1/19/ /8/2005 (Duplicate) (Duplicate) Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation Flammability and Mercury U U U Mercury (dissolved) U U U Nickel (1) U R ab 0.02 U 0.02 U U 0.02 U Nickel (dissolved) (1) U 0.02 U 0.02 U 0.02 U U Selenium U UJ U Selenium (dissolved) U UJ U Silver U 0.01 U 0.01 U Silver (dissolved) U 0.01 U 0.01 U Thallium U U U Thallium (dissolved) U U U Tin 0.05 U 0.05 U 0.05 U Tin (dissolved) 0.05 U 0.05 U 0.05 U Vanadium b J b 0.01 U ab ab 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U Vanadium (dissolved) U 0.01 U b b 0.01 U 0.01 U Zinc (1) a J J J J J 2.85 ab 0.04 J J Zinc (dissolved) (1) U J 0.01 U J 1.74 a J PCBs Aroclor1016 (PCB1016) U U U U U U Aroclor1221 (PCB1221) U U U U U U Aroclor1232 (PCB1232) U U U U U U Aroclor1242 (PCB1242) U U U U U U Aroclor1248 (PCB1248) U U U U U U Aroclor1254 (PCB1254) U U U U U U Aroclor1260 (PCB1260) U U U U U U Total PCBs U U U U U U Wet Alkalinity, total (as CaCO3) Ammonia UJ 0.05 UJ 0.05 UJ 0.05 UJ Bicarbonate (as CaCO3) Cyanide (total) U 0.01 U 0.01 U 0.01 a 0.01 U 0.01 U Fluoride 1.2 Formaldehyde U U 0.05 U ph, lab s.u b Sulfide U Total dissolved solids (TDS) J b 2610 J b 2520 J b J b 334 Total kjeldahl nitrogen (TKN) FPARAM Conductivity, field umhos/cm Dissolved oxygen (DO), field Oxidation reduction potential (ORP) millivolts ph, field s.u b 9.31 b 9.42 b b 8.82 b 9.18 b 9.77 b Temperature, field Deg C Turbidity NTU Footnotes: U Not detected at the associated reporting limit. J Estimated concentration. UJ Not detected; associated reporting limit is estimated. R Rejected b Exceedance of Part 201 Generic Cleanup Criteria and s dated December 31, b Exceedance of screening levels in the latest round of groundwater data for a given location Downgradient sampling location included in the groundwater evaluation discussion not analyzed (1) The GSI criteria is dependent on the ph or hardness, or both, of the receiving surface water. The estimated ph for the Saginaw River is 8 and the estimated hardness for the Saginaw River is 275 mg CaCO3/L Memo32 T1 T3 T5 6/7/2018

123 Table 5 Page 5 of 12 IU I Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation Flammability and VOAs a b c d e I I I I I I I I I I I I I I I I I I MW07245 MW07245 MW07245 MW07245 MW07245 MW07959 MW07959 MW07959 MW07959 MW07959 MW96939 MW96939 MW96939 MW96939 MW96939 TMW6 TMW06037 TMW06243 M10005 M10005Q M10006 M20201 M20202Q M30028 M10205 M50010 M20519 MW07959 M20246 M20247Q M80002 M20513 MW96939 H80003 H80007 H /18/ /18/ /18/1998 7/12/2000 7/12/ /4/1998 7/12/ /20/2001 1/19/ /8/2005 8/4/2000 8/4/ /19/2001 1/18/ /8/ /19/ /20/ /20/2001 (Triplicate) (Duplicate) (Duplicate) (Duplicate) 1,1,1,2Tetrachloroethane ,1,1Trichloroethane ,1,2,2Tetrachloroethane ,1,2Trichloroethane ,1Dichloroethane ,1Dichloroethene ,1Dichloropropene 1,2Dibromo3chloropropane (DBCP) ,2Dibromoethane (Ethylene dibromide) ,2Dichlorobenzene ,2Dichloroethane ,2Dichloropropane ,3Dichlorobenzene ,3Dichloropropane 1,4Dichlorobenzene ,2Dichloropropane 2Butanone (Methyl ethyl ketone) (MEK) Hexanone Methyl2pentanone (Methyl isobutyl ketone) (MIBK) Acetone Acetonitrile Acrolein Acrylonitrile Allyl chloride Benzene Bromodichloromethane Bromoform Bromomethane (Methyl bromide) Carbon disulfide Carbon tetrachloride Chlorobenzene Chlorobromomethane Chloroethane Chloroform (Trichloromethane) Chloromethane (Methyl chloride) Chloroprene cis1,2dichloroethene cis1,3dichloropropene cis1,4dichloro2butene Dibromochloromethane Dibromomethane Dichlorodifluoromethane (CFC12) Ethyl methacrylate Ethylbenzene Iodomethane m&pxylenes Methyl acrylonitrile Methyl methacrylate Methylene chloride Naphthalene oxylene Propionitrile (ethyl cyanide) Styrene Tetrachloroethene Toluene trans1,2dichloroethene trans1,3dichloropropene trans1,4dichloro2butene Trichloroethene Trichlorofluoromethane (CFC11) Vinyl acetate Vinyl chloride UJ UJ UJ U UJ UJ UJ U U U U U U UJ UJ UJ U U U U U U UJ UJ UJ U U U U U U UJ UJ UJ U U U U U UJ UJ UJ U U U U U U UJ UJ UJ U UJ UJ UJ U UJ UJ UJ U UJ UJ UJ U UJ UJ UJ U U U U U U UJ UJ UJ U U U U U U UJ UJ UJ U UJ UJ UJ U UJ UJ UJ U UJ UJ UJ U R R R R R R R 0.02 U 0.02 U 0.02 UJ 0.02 UJ 0.02 UJ 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U R R R R R R R 0.02 U 0.02 U R R R R J 0.16 J J 0.02 U 0.02 U R R R U R R R R 0.02 UJ 0.02 UJ 0.02 UJ 0.02 U UJ UJ UJ U J J J U U UJ UJ UJ U U U U U U UJ UJ UJ U U U U U U UJ UJ UJ U U U U U U UJ UJ UJ U U U U UJ UJ UJ U U U U U U UJ UJ UJ U U U U U U UJ UJ UJ U UJ UJ UJ U U U U U U UJ UJ UJ U U U U U U UJ UJ UJ U U U U U U 0.01 UJ 0.01 UJ 0.01 UJ 0.01 U UJ UJ UJ U U U U U U UJ UJ UJ U U U U U U 0.01 UJ 0.01 UJ 0.01 UJ 0.01 U UJ UJ UJ U U U U U U UJ UJ UJ U UJ UJ UJ U UJ UJ UJ UJ UJ UJ UJ U U U U U U UJ UJ UJ U UJ UJ UJ U U U U U UJ UJ UJ U UJ UJ UJ UJ UJ UJ UJ U U U U U U UJ UJ UJ U UJ UJ UJ U U U R R R R UJ UJ UJ U U U U U U UJ UJ UJ U U U U U U J J UJ U U UJ UJ UJ U U U U U U UJ UJ UJ U U U U U U 0.01 UJ 0.01 UJ 0.01 UJ 0.01 U UJ UJ UJ U U U U U U UJ UJ UJ U UJ UJ UJ UJ UJ UJ UJ U U U U U U SVOAs 0,0,0Triethylphosphorothioate 1,2,4,5Tetrachlorobenzene ,2,4Trichlorobenzene ,2Dichlorobenzene ,3,5Trinitrobenzene 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U R 0.01 U U U 0.01 U 0.01 U U U U U Memo32 T1 T3 T5 6/7/2018

124 Table 5 Page 6 of 12 IU I Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation Flammability and 1,3Dichlorobenzene ,3Dinitrobenzene 1,4Dichlorobenzene ,4Naphthoquinone 1Naphthylamine 2,2'Oxybis(1chloropropane) (bis(2chloroisopropyl) ether) 2,2'Oxybis(2chloropropane) (bis(2chloroisopropyl) ether) 2,3,4,6Tetrachlorophenol 2,4,5Trichlorophenol ,4,6Trichlorophenol ,4Dichlorophenol ,4Dimethylphenol ,4Dinitrophenol 2,4Dinitrotoluene ,6Dichlorophenol 2,6Dinitrotoluene 2Acetylaminofluorene 2Chloronaphthalene Chlorophenol Methylnaphthalene Methylphenol Naphthylamine 2Nitroaniline 2Nitrophenol Toluidine 3&4Methylphenol ,3'Dichlorobenzidine ,3Dimethylbenzidine 3Methylcholanthrene 3Nitroaniline 4,6Dinitro2methylphenol Aminobiphenyl 4Bromophenyl phenyl ether 4Chloro3methylphenol Chloroaniline 4Chlorophenyl phenyl ether 4Dimethylaminoazobenzene 4Methylphenol Nitroaniline 4Nitrophenol 5Nitro2toluidine 7,12Dimethylbenz(a)anthracene Acenaphthene Acenaphthylene Acetophenone Anthracene Benzo(a)anthracene Benzo(a)pyrene Benzo(b)fluoranthene Benzo(g,h,i)perylene Benzo(k)fluoranthene Benzyl alcohol bis(2chloroethoxy)methane bis(2chloroethyl)ether bis(2ethylhexyl)phthalate (DEHP) Butyl benzylphthalate (BBP) Carbazole Chlorobenzilate Chrysene Diallate Dibenz(a,h)anthracene Dibenzofuran Diethyl phthalate Dimethoate Dimethyl phthalate Dinbutylphthalate (DBP) Dinoctyl phthalate (DnOP) Dinoseb Diphenylamine Disulfoton Ethyl methanesulfonate I I I I I I I I I I I I I I I I I I MW07245 MW07245 MW07245 MW07245 MW07245 MW07959 MW07959 MW07959 MW07959 MW07959 MW96939 MW96939 MW96939 MW96939 MW96939 TMW6 TMW06037 TMW06243 M10005 M10005Q M10006 M20201 M20202Q M30028 M10205 M50010 M20519 MW07959 M20246 M20247Q M80002 M20513 MW96939 H80003 H80007 H /18/ /18/ /18/1998 7/12/2000 7/12/ /4/1998 7/12/ /20/2001 1/19/ /8/2005 8/4/2000 8/4/ /19/2001 1/18/ /8/ /19/ /20/ /20/2001 (Triplicate) (Duplicate) (Duplicate) (Duplicate) 0.01 U R 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U J 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U J 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U J 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U R 0.89 ab 0.43 ab 0.63 ab U 0.01 U U U U U R U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U J 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U J 0.01 U 0.01 U U J 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U J 0.29 a 0.12 a 0.15 a U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U U U U R U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U J 0.46 ab 0.16 a 0.01 U 0.01 U U U U U R U U U U U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U U U U U R U U U U U U U U U U R U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.17 a U U U U R U U U U U U U U U U R U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 UJ 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U R U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U U U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U Memo32 T1 T3 T5 6/7/2018

125 Table 5 Page 7 of 12 IU I Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation Ethyl parathion Famphur Fluoranthene Fluorene Hexachlorobenzene Hexachlorobutadiene Hexachlorocyclopentadiene Hexachloroethane Hexachloropropene Indeno(1,2,3cd)pyrene Isodrin Isophorone Isosafrole Kepone Methapyrilene Methyl methanesulfonate Methyl parathion Naphthalene Nitrobenzene NNitrosodiethylamine NNitrosodimethylamine NNitrosodinbutylamine NNitrosodinpropylamine NNitrosodiphenylamine NNitrosomethylethylamine NNitrosopiperidine NNitrosopyrrolidine Pentachlorobenzene Pentachloronitrobenzene Pentachlorophenol (1) Phenacetin Phenanthrene Phenol Phorate pphenylenediamine Pronamide Pyrene Safrole Thionazin (O,OdiethylO2pyrazinyl phosphorothioate) Metals Flammability and I I I I I I I I I I I I I I I I I I MW07245 MW07245 MW07245 MW07245 MW07245 MW07959 MW07959 MW07959 MW07959 MW07959 MW96939 MW96939 MW96939 MW96939 MW96939 TMW6 TMW06037 TMW06243 M10005 M10005Q M10006 M20201 M20202Q M30028 M10205 M50010 M20519 MW07959 M20246 M20247Q M80002 M20513 MW96939 H80003 H80007 H /18/ /18/ /18/1998 7/12/2000 7/12/ /4/1998 7/12/ /20/2001 1/19/ /8/2005 8/4/2000 8/4/ /19/2001 1/18/ /8/ /19/ /20/ /20/2001 (Triplicate) (Duplicate) (Duplicate) (Duplicate) 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U J 0.01 U U J 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.05 U 0.05 U 0.05 U 0.05 U U U U U R U U ab U U U 0.05 U 0.05 U 0.05 U 0.05 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.23 J J J 0.15 J J 5.2 ab 1.8 a 1.9 a U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 UJ 0.01 UJ 0.01 UJ 0.01 UJ 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U U U U Aluminum 0.05 Aluminum (dissolved) 0.05 Antimony Antimony (dissolved) Arsenic Arsenic (dissolved) Barium (1) Barium (dissolved) (1) Beryllium (1) Beryllium (dissolved) (1) Cadmium (1) Cadmium (dissolved) (1) Calcium Calcium (dissolved) Chromium 0.1 Chromium (dissolved) 0.1 Chromium VI (hexavalent) Cobalt Cobalt (dissolved) Copper (1) Copper (dissolved) (1) Iron 0.3 Iron (dissolved) 0.3 Lead (1) Lead (dissolved) (1) Manganese (1) Manganese (dissolved) (1) b 25.3 b 23.1 b 40.4 b 74.4 b 61.3 b 6.58 b b 3.13 b 2.87 b b b 0.05 U 0.05 U 0.05 U 3.3 b b J 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U J b 0.05 U 0.05 U 0.05 U J b 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.02 ab ab ab ab ab ab ab U J J ab ab ab 0.04 ab ab U U U U U J J b b U U U U U U U U U U U U U U U U U U J a ab U U U U U U U U U U U U U U J b b b U J J J U U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U J 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U a a a a a a a 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U J 0.01 U 0.01 U 28.4 b 28.8 b 25.6 b 141 J b J J J ab ab ab ab ab 2.14 ab ab J J U U U U U U U U U 1.28 b 1.31 ab 1.22 b 2.91 J ab 5.42 J ab 19.1 J ab 1.18 J b b b b b b b b J b 1.89 J ab U J b 0.17 b Memo32 T1 T3 T5 6/7/2018

126 Table 5 Page 8 of 12 IU I Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation Flammability and I I I I I I I I I I I I I I I I I I MW07245 MW07245 MW07245 MW07245 MW07245 MW07959 MW07959 MW07959 MW07959 MW07959 MW96939 MW96939 MW96939 MW96939 MW96939 TMW6 TMW06037 TMW06243 M10005 M10005Q M10006 M20201 M20202Q M30028 M10205 M50010 M20519 MW07959 M20246 M20247Q M80002 M20513 MW96939 H80003 H80007 H /18/ /18/ /18/1998 7/12/2000 7/12/ /4/1998 7/12/ /20/2001 1/19/ /8/2005 8/4/2000 8/4/ /19/2001 1/18/ /8/ /19/ /20/ /20/2001 (Triplicate) (Duplicate) (Duplicate) (Duplicate) Mercury Mercury (dissolved) Nickel (1) Nickel (dissolved) (1) Selenium Selenium (dissolved) Silver Silver (dissolved) Thallium Thallium (dissolved) Tin Tin (dissolved) Vanadium Vanadium (dissolved) Zinc (1) Zinc (dissolved) (1) U U U a U U U U U J 0.02 U 0.02 U J 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U UJ UJ UJ UJ UJ UJ UJ UJ 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U U U U 0.05 U 0.05 U 0.05 U U 0.05 U 0.05 U 0.05 U b b b ab ab ab b 0.01 U J b J b 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U b 0.01 U 0.01 U a a a 1.26 J a 2.14 J a 37.1 ab 2.26 J a J J J J 0.01 U 0.01 U 0.01 U 0.01 U J 0.01 U 0.01 U 0.01 U J PCBs Aroclor1016 (PCB1016) Aroclor1221 (PCB1221) Aroclor1232 (PCB1232) Aroclor1242 (PCB1242) Aroclor1248 (PCB1248) Aroclor1254 (PCB1254) Aroclor1260 (PCB1260) Total PCBs U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U Wet Alkalinity, total (as CaCO3) Ammonia Bicarbonate (as CaCO3) Cyanide (total) Fluoride Formaldehyde ph, lab s.u Sulfide Total dissolved solids (TDS) 500 Total kjeldahl nitrogen (TKN) ab J 0.01 U 0.01 a 0.01 a 0.03 a 0.02 a 0.42 ab 0.25 ab 0.21 ab J 0.01 U UJ 0.05 UJ 0.05 UJ R 0.27 a 0.05 U 0.05 U 0.59 J 0.94 J 0.62 J b b 2170 b FPARAM Conductivity, field umhos/cm Dissolved oxygen (DO), field Oxidation reduction potential (ORP) millivolts ph, field s.u Temperature, field Deg C Turbidity NTU b 9.49 b b 9.72 b 9.72 b b b Footnotes: U Not detected at the associated reporting limit. J Estimated concentration. UJ Not detected; associated reporting limit is estimated. R Rejected b Exceedance of Part 201 Generic Cleanup Criteria and s dated December 31, b Exceedance of screening levels in the latest round of groundwater data for a given location Downgradient sampling location included in the groundwater evaluation discussion not analyzed (1) The GSI criteria is dependent on the ph or hardness, or both, of the receiving surface water. The estimated ph for the Saginaw River is 8 and the estimated hardness for the Saginaw River is 275 mg CaCO3/L Memo32 T1 T3 T5 6/7/2018

127 Table 5 Page 9 of 12 IU I Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation Flammability and VOAs a b c d e I I I I I I I I I I I I I TMW06243A TMW06243A TMW06652 TMW06848 TMW06951 TMW06951 TMW07048 TMW07257 TMW07356 TMW07457 TMW07459 TMW07957 TMW07962 H50139 H50140Q H50138 H80006 H50135 H50136Q H50137 H50006 H50133 H50007 H50008 H50009 H /17/ /17/ /17/ /20/ /17/ /17/ /17/ /20/ /17/ /20/ /20/ /20/ /20/2001 (Duplicate) (Duplicate) 1,1,1,2Tetrachloroethane ,1,1Trichloroethane ,1,2,2Tetrachloroethane ,1,2Trichloroethane ,1Dichloroethane ,1Dichloroethene ,1Dichloropropene 1,2Dibromo3chloropropane (DBCP) ,2Dibromoethane (Ethylene dibromide) ,2Dichlorobenzene ,2Dichloroethane ,2Dichloropropane ,3Dichlorobenzene ,3Dichloropropane 1,4Dichlorobenzene ,2Dichloropropane 2Butanone (Methyl ethyl ketone) (MEK) Hexanone Methyl2pentanone (Methyl isobutyl ketone) (MIBK) Acetone Acetonitrile Acrolein Acrylonitrile Allyl chloride Benzene Bromodichloromethane Bromoform Bromomethane (Methyl bromide) Carbon disulfide Carbon tetrachloride Chlorobenzene Chlorobromomethane Chloroethane Chloroform (Trichloromethane) Chloromethane (Methyl chloride) Chloroprene cis1,2dichloroethene cis1,3dichloropropene cis1,4dichloro2butene Dibromochloromethane Dibromomethane Dichlorodifluoromethane (CFC12) Ethyl methacrylate Ethylbenzene Iodomethane m&pxylenes Methyl acrylonitrile Methyl methacrylate Methylene chloride Naphthalene oxylene Propionitrile (ethyl cyanide) Styrene Tetrachloroethene Toluene trans1,2dichloroethene trans1,3dichloropropene trans1,4dichloro2butene Trichloroethene Trichlorofluoromethane (CFC11) Vinyl acetate Vinyl chloride SVOAs 0,0,0Triethylphosphorothioate 1,2,4,5Tetrachlorobenzene ,2,4Trichlorobenzene ,2Dichlorobenzene ,3,5Trinitrobenzene U U 0.01 U U U U U 0.01 U U U Memo32 T1 T3 T5 6/7/2018

128 Table 5 Page 10 of 12 IU I Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation Flammability and 1,3Dichlorobenzene ,3Dinitrobenzene 1,4Dichlorobenzene ,4Naphthoquinone 1Naphthylamine 2,2'Oxybis(1chloropropane) (bis(2chloroisopropyl) ether) 2,2'Oxybis(2chloropropane) (bis(2chloroisopropyl) ether) 2,3,4,6Tetrachlorophenol 2,4,5Trichlorophenol ,4,6Trichlorophenol ,4Dichlorophenol ,4Dimethylphenol ,4Dinitrophenol 2,4Dinitrotoluene ,6Dichlorophenol 2,6Dinitrotoluene 2Acetylaminofluorene 2Chloronaphthalene Chlorophenol Methylnaphthalene Methylphenol Naphthylamine 2Nitroaniline 2Nitrophenol Toluidine 3&4Methylphenol ,3'Dichlorobenzidine ,3Dimethylbenzidine 3Methylcholanthrene 3Nitroaniline 4,6Dinitro2methylphenol Aminobiphenyl 4Bromophenyl phenyl ether 4Chloro3methylphenol Chloroaniline 4Chlorophenyl phenyl ether 4Dimethylaminoazobenzene 4Methylphenol Nitroaniline 4Nitrophenol 5Nitro2toluidine 7,12Dimethylbenz(a)anthracene Acenaphthene Acenaphthylene Acetophenone Anthracene Benzo(a)anthracene Benzo(a)pyrene Benzo(b)fluoranthene Benzo(g,h,i)perylene Benzo(k)fluoranthene Benzyl alcohol bis(2chloroethoxy)methane bis(2chloroethyl)ether bis(2ethylhexyl)phthalate (DEHP) Butyl benzylphthalate (BBP) Carbazole Chlorobenzilate Chrysene Diallate Dibenz(a,h)anthracene Dibenzofuran Diethyl phthalate Dimethoate Dimethyl phthalate Dinbutylphthalate (DBP) Dinoctyl phthalate (DnOP) Dinoseb Diphenylamine Disulfoton Ethyl methanesulfonate I I I I I I I I I I I I I TMW06243A TMW06243A TMW06652 TMW06848 TMW06951 TMW06951 TMW07048 TMW07257 TMW07356 TMW07457 TMW07459 TMW07957 TMW07962 H50139 H50140Q H50138 H80006 H50135 H50136Q H50137 H50006 H50133 H50007 H50008 H50009 H /17/ /17/ /17/ /20/ /17/ /17/ /17/ /20/ /17/ /20/ /20/ /20/ /20/2001 (Duplicate) (Duplicate) U U 0.01 U U U U U 0.01 U U U U U 0.01 U U U U U U U U U U U U U U 0.39 ab U U U U U U U 0.01 U U U U U 0.01 U U U U U 0.01 U U U U U U U U 0.01 U U U U 0.12 a U 0.12 a U U U U U U U 0.01 U U U U U U U U U U U U U U U U U U U U 0.01 U U U U U 0.01 U U U U U 0.01 U U U U U 0.01 U U U a U 0.27 a U U U U U U U U U U U U 0.01 U U U U U 0.01 U U U U U 0.01 U U U U U 0.01 U U U U U 0.01 U U U U U 0.01 U U U U U 0.01 U U U U U 0.01 U U U U U 0.01 U U U U U 0.01 U U U U U 0.01 U U U U U 0.01 U U U U U 0.01 U U U U U 0.01 U U U U U 0.01 U U U U U 0.01 U U U U U 0.01 U U U U U 0.01 U U U U U 0.01 U U U U U 0.01 U U U Memo32 T1 T3 T5 6/7/2018

129 Table 5 Page 11 of 12 IU I Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation Ethyl parathion Famphur Fluoranthene Fluorene Hexachlorobenzene Hexachlorobutadiene Hexachlorocyclopentadiene Hexachloroethane Hexachloropropene Indeno(1,2,3cd)pyrene Isodrin Isophorone Isosafrole Kepone Methapyrilene Methyl methanesulfonate Methyl parathion Naphthalene Nitrobenzene NNitrosodiethylamine NNitrosodimethylamine NNitrosodinbutylamine NNitrosodinpropylamine NNitrosodiphenylamine NNitrosomethylethylamine NNitrosopiperidine NNitrosopyrrolidine Pentachlorobenzene Pentachloronitrobenzene Pentachlorophenol (1) Phenacetin Phenanthrene Phenol Phorate pphenylenediamine Pronamide Pyrene Safrole Thionazin (O,OdiethylO2pyrazinyl phosphorothioate) Metals Flammability and I I I I I I I I I I I I I TMW06243A TMW06243A TMW06652 TMW06848 TMW06951 TMW06951 TMW07048 TMW07257 TMW07356 TMW07457 TMW07459 TMW07957 TMW07962 H50139 H50140Q H50138 H80006 H50135 H50136Q H50137 H50006 H50133 H50007 H50008 H50009 H /17/ /17/ /17/ /20/ /17/ /17/ /17/ /20/ /17/ /20/ /20/ /20/ /20/2001 (Duplicate) (Duplicate) U U 0.01 U U U U U 0.01 U U U U U 0.01 U U U U U 0.01 U U U U U 0.01 U U U U U 0.01 U U U U U 0.01 U U U U U 0.01 U U U U U U U U U 0.01 U U U U U 0.01 U U U U U 0.01 U U U U U b U b U U 0.01 U U U U U 2.6 a U 2.6 a U U 0.01 U U U Aluminum 0.05 Aluminum (dissolved) 0.05 Antimony Antimony (dissolved) Arsenic Arsenic (dissolved) Barium (1) Barium (dissolved) (1) Beryllium (1) Beryllium (dissolved) (1) Cadmium (1) Cadmium (dissolved) (1) Calcium Calcium (dissolved) Chromium 0.1 Chromium (dissolved) 0.1 Chromium VI (hexavalent) Cobalt Cobalt (dissolved) Copper (1) Copper (dissolved) (1) Iron 0.3 Iron (dissolved) 0.3 Lead (1) Lead (dissolved) (1) Manganese (1) Manganese (dissolved) (1) Memo32 T1 T3 T5 6/7/2018

130 Table 5 Page 12 of 12 IU I Data Screened Against Part 201 Generic Cleanup Criteria and s Dated December 31, 2013 Surface Water Interface Non GW Volatilization to Water Solubility Indoor Air Inhalation Flammability and I I I I I I I I I I I I I TMW06243A TMW06243A TMW06652 TMW06848 TMW06951 TMW06951 TMW07048 TMW07257 TMW07356 TMW07457 TMW07459 TMW07957 TMW07962 H50139 H50140Q H50138 H80006 H50135 H50136Q H50137 H50006 H50133 H50007 H50008 H50009 H /17/ /17/ /17/ /20/ /17/ /17/ /17/ /20/ /17/ /20/ /20/ /20/ /20/2001 (Duplicate) (Duplicate) Mercury Mercury (dissolved) Nickel (1) Nickel (dissolved) (1) Selenium Selenium (dissolved) Silver Silver (dissolved) Thallium Thallium (dissolved) Tin Tin (dissolved) Vanadium Vanadium (dissolved) Zinc (1) Zinc (dissolved) (1) PCBs Aroclor1016 (PCB1016) Aroclor1221 (PCB1221) Aroclor1232 (PCB1232) Aroclor1242 (PCB1242) Aroclor1248 (PCB1248) Aroclor1254 (PCB1254) Aroclor1260 (PCB1260) Total PCBs Wet Alkalinity, total (as CaCO3) Ammonia Bicarbonate (as CaCO3) Cyanide (total) Fluoride Formaldehyde ph, lab s.u Sulfide Total dissolved solids (TDS) 500 Total kjeldahl nitrogen (TKN) b 40.2 J ab ab 11 b ab ab 0.01 a 0.03 a 0.26 ab 0.01 U 0.48 ab b 1080 b 1750 b 1990 b 3120 b 1480 b FPARAM Conductivity, field umhos/cm Dissolved oxygen (DO), field Oxidation reduction potential (ORP) millivolts ph, field s.u Temperature, field Deg C Turbidity NTU b b b b b b b 9.91 b b b Footnotes: U Not detected at the associated reporting limit. J Estimated concentration. UJ Not detected; associated reporting limit is estimated. R Rejected b Exceedance of Part 201 Generic Cleanup Criteria and s dated December 31, b Exceedance of screening levels in the latest round of groundwater data for a given location Downgradient sampling location included in the groundwater evaluation discussion not analyzed (1) The GSI criteria is dependent on the ph or hardness, or both, of the receiving surface water. The estimated ph for the Saginaw River is 8 and the estimated hardness for the Saginaw River is 275 mg CaCO3/L Memo32 T1 T3 T5 6/7/2018

131 Table 6 Page 1 of 16 IU I Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s I I I I I I I I I I I I I I I I MW1S MW2S MW2S MW4S MW5S MW34 MW06445 MW06445 MW06445 MW06445 MW06939 MW06939 MW06939 MW06939 MW06951 MW06951 M50000 M40001 M40002Q M40003 H80142 M80004 M30026 M20200 M50548 MW06445 M30027 M20231 M20509 M20510Q M30025 M /15/ /16/ /16/ /16/ /18/ /19/ /3/1998 7/12/2000 3/29/ /8/ /4/1998 7/27/2000 1/17/2005 1/17/ /3/1998 7/12/2000 (Duplicate) (Duplicate) Criteria Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A VOAs a b c d e f 1,1,1,2Tetrachloroethane E E E U U U 1,1,1Trichloroethane E E E U U U U U U 1,1,2,2Tetrachloroethane E E E U U U U U U 1,1,2Trichloroethane E E E U U U U U U 1,1Dichloroethane E E E U U U U U 1,1Dichloroethene E E E U U U U U U 1,1Dichloropropene N/A N/A N/A U U UJ 1,2Dibromo3chloropropane (DBCP) E E E U U U 1,2Dibromoethane (Ethylene dibromide) E E E U U U 1,2Dichlorobenzene E E E U U U 1,2Dichloroethane E E E U U U U U U 1,2Dichloropropane E E E U U U U U U 1,3Dichlorobenzene E E E U U U 1,3Dichloropropane N/A N/A N/A U U U 1,4Dichlorobenzene E E E U U U 2,2Dichloropropane N/A N/A N/A U U U 2Butanone (Methyl ethyl ketone) (MEK) E E E+01 R R R R R R 2Hexanone E E E U 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U 4Methyl2pentanone (Methyl isobutyl ketone) (MIBK) E E E+00 R R R R R R Acetone E E E+02 R R R R R R Acetonitrile E E E U U U Acrolein E E E04 R R R Acrylonitrile E E E UJ 0.02 U 0.02 UJ Allyl chloride N/A N/A N/A UJ U UJ Benzene E E E U U U U Bromodichloromethane E E E U U U U U U Bromoform E E E U U U U U U Bromomethane (Methyl bromide) E E E U U U U U U Carbon disulfide E E E J U U U U Carbon tetrachloride E E E U U U U U U Chlorobenzene E E E U U U U U U Chlorobromomethane N/A N/A N/A U U U Chloroethane E E E U U U U U U Chloroform (Trichloromethane) E E E U U U U U U Chloromethane (Methyl chloride) E E E U U U J U U Chloroprene N/A N/A N/A 0.01 U 0.01 U 0.01 U cis1,2dichloroethene E E E U U U U U U cis1,3dichloropropene NV NV NV U U U U U U cis1,4dichloro2butene N/A N/A N/A 0.01 UJ 0.01 U 0.01 UJ Dibromochloromethane E E E U U U U U U Dibromomethane E E E U U U Dichlorodifluoromethane (CFC12) E E E U U UJ Ethyl methacrylate N/A N/A N/A U UJ U Ethylbenzene E E E U U U U U U Iodomethane N/A N/A N/A UJ U UJ m&pxylenes N/A N/A N/A U U U U U U Methyl acrylonitrile N/A N/A N/A UJ U UJ Methyl methacrylate N/A N/A N/A U UJ U Methylene chloride E E E U U U U U U Naphthalene E E E U U U oxylene N/A N/A N/A U U U U U U Propionitrile (ethyl cyanide) N/A N/A N/A R R R Styrene E E E U U U U U U Tetrachloroethene E E E U U U U U U Toluene E E E U U U U U U trans1,2dichloroethene E E E U U U U U U trans1,3dichloropropene N/A N/A N/A U U U U U U trans1,4dichloro2butene N/A N/A N/A 0.01 UJ 0.01 U 0.01 U Trichloroethene E E E U U U U U U Trichlorofluoromethane (CFC11) E E E U U U Vinyl acetate E E E UJ UJ U Vinyl chloride E E E U U U U U U SVOAs 0,0,0Triethylphosphorothioate N/A N/A N/A 0.01 U 0.01 U 0.01 U 1,2,4,5Tetrachlorobenzene E E E U 0.01 U 0.01 U 1,2,4Trichlorobenzene E E E U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 1,2Dichlorobenzene E E E U 0.01 U 0.01 U 1,3,5Trinitrobenzene N/A N/A N/A U U U 1,3Dichlorobenzene E E E U 0.01 U 0.01 U Memo32T2 T4 T6 6/7/2018

132 Table 6 Page 2 of 16 IU I Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s I I I I I I I I I I I I I I I I MW1S MW2S MW2S MW4S MW5S MW34 MW06445 MW06445 MW06445 MW06445 MW06939 MW06939 MW06939 MW06939 MW06951 MW06951 M50000 M40001 M40002Q M40003 H80142 M80004 M30026 M20200 M50548 MW06445 M30027 M20231 M20509 M20510Q M30025 M /15/ /16/ /16/ /16/ /18/ /19/ /3/1998 7/12/2000 3/29/ /8/ /4/1998 7/27/2000 1/17/2005 1/17/ /3/1998 7/12/2000 (Duplicate) (Duplicate) Criteria Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A 1,3Dinitrobenzene N/A N/A N/A 0.01 U 0.01 U 0.01 U 1,4Dichlorobenzene E E E U 0.01 U 0.01 U 1,4Naphthoquinone N/A N/A N/A 0.01 U 0.01 U 0.01 U 1Naphthylamine N/A N/A N/A 0.01 U 0.01 U 0.01 U 2,2'Oxybis(1chloropropane) (bis(2chloroisopropyl) ether) N/A N/A N/A 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 2,2'Oxybis(2chloropropane) (bis(2chloroisopropyl) ether) 2,3,4,6Tetrachlorophenol N/A N/A N/A 0.01 U 0.01 U 0.01 U 2,4,5Trichlorophenol NV NV NV 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 2,4,6Trichlorophenol NV NV NV 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 2,4Dichlorophenol NV NV NV 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 2,4Dimethylphenol NV NV NV 0.01 U 0.01 U U 0.01 U 2,4Dinitrophenol NV NV NV U U U U U U 2,4Dinitrotoluene NV NV NV 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 2,6Dichlorophenol N/A N/A N/A 0.01 U 0.01 U 0.01 U 2,6Dinitrotoluene N/A N/A N/A 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 2Acetylaminofluorene N/A N/A N/A 0.01 U 0.01 U 0.01 U 2Chloronaphthalene N/A N/A N/A 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 2Chlorophenol E E E U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 2Methylnaphthalene E E E U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 2Methylphenol NV NV NV 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 2Naphthylamine N/A N/A N/A 0.01 U 0.01 U 0.01 U 2Nitroaniline N/A N/A N/A U U U U U U 2Nitrophenol E E E U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 2Toluidine N/A N/A N/A 0.01 U 0.01 U 0.01 U 3&4Methylphenol N/A N/A N/A 0.01 U 0.01 U J 0.01 U 0.01 U 3,3'Dichlorobenzidine NV NV NV U U U U U U 3,3Dimethylbenzidine N/A N/A N/A U U U 3Methylcholanthrene N/A N/A N/A 0.01 U 0.01 U 0.01 U 3Nitroaniline N/A N/A N/A U U U U U U 4,6Dinitro2methylphenol NV NV NV U U U U U U 4Aminobiphenyl N/A N/A N/A 0.01 U 0.01 U 0.01 U 4Bromophenyl phenyl ether N/A N/A N/A 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 4Chloro3methylphenol NV NV NV 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 4Chloroaniline NV NV NV 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 4Chlorophenyl phenyl ether N/A N/A N/A 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 4Dimethylaminoazobenzene N/A N/A N/A 0.01 U 0.01 U 0.01 U 4Methylphenol N/A N/A N/A 4Nitroaniline N/A N/A N/A U U U U U U 4Nitrophenol N/A N/A N/A U U U U U U 5Nitro2toluidine N/A N/A N/A 0.01 U 0.01 U 0.01 U 7,12Dimethylbenz(a)anthracene N/A N/A N/A 0.01 U 0.01 U 0.01 U Acenaphthene E E E U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U Acenaphthylene E E E U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U Acetophenone E E E U 0.01 U 0.01 U Anthracene E E E U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U Benzo(a)anthracene E E E U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U Benzo(a)pyrene NV NV NV 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U Benzo(b)fluoranthene NV NV NV 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U Benzo(g,h,i)perylene NV NV NV 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U Benzo(k)fluoranthene NV NV NV 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U Benzyl alcohol NV NV NV 0.01 U 0.01 UJ 0.01 UJ bis(2chloroethoxy)methane N/A N/A N/A 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U bis(2chloroethyl)ether E E E U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U bis(2ethylhexyl)phthalate (DEHP) NV NV NV 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U Butyl benzylphthalate (BBP) NV NV NV 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U Carbazole NV NV NV 0.01 U 0.01 U 0.01 U Chlorobenzilate N/A N/A N/A 0.01 U 0.01 U 0.01 U Chrysene NV NV NV 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U Diallate N/A N/A N/A 0.01 U 0.01 U 0.01 U Dibenz(a,h)anthracene NV NV NV 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U Dibenzofuran E E E U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U Diethyl phthalate NV NV NV 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U Dimethoate N/A N/A N/A 0.01 U 0.01 U 0.01 U Dimethyl phthalate NV NV NV 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U Dinbutylphthalate (DBP) NV NV NV 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U Dinoctyl phthalate (DnOP) E E E U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U Dinoseb NV NV NV U U U Diphenylamine N/A N/A N/A 0.01 U 0.01 U 0.01 U Disulfoton N/A N/A N/A 0.01 U 0.01 U 0.01 U Ethyl methanesulfonate N/A N/A N/A 0.01 U 0.01 U 0.01 U Ethyl parathion N/A N/A N/A 0.01 U 0.01 U 0.01 U Famphur N/A N/A N/A 0.01 U 0.01 U 0.01 U Fluoranthene NV NV NV 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U Memo32T2 T4 T6 6/7/2018

133 Table 6 Page 3 of 16 IU I Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s I I I I I I I I I I I I I I I I MW1S MW2S MW2S MW4S MW5S MW34 MW06445 MW06445 MW06445 MW06445 MW06939 MW06939 MW06939 MW06939 MW06951 MW06951 M50000 M40001 M40002Q M40003 H80142 M80004 M30026 M20200 M50548 MW06445 M30027 M20231 M20509 M20510Q M30025 M /15/ /16/ /16/ /16/ /18/ /19/ /3/1998 7/12/2000 3/29/ /8/ /4/1998 7/27/2000 1/17/2005 1/17/ /3/1998 7/12/2000 (Duplicate) (Duplicate) Criteria Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A Fluorene E E E U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U Hexachlorobenzene E E E U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U Hexachlorobutadiene E E E U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U Hexachlorocyclopentadiene E E E U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U Hexachloroethane E E E U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U Hexachloropropene N/A N/A N/A 0.01 U 0.01 U 0.01 U Indeno(1,2,3cd)pyrene NV NV NV 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U Isodrin N/A N/A N/A 0.01 U 0.01 U 0.01 U Isophorone NV NV NV 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U Isosafrole N/A N/A N/A 0.01 U 0.01 U 0.01 U Kepone N/A N/A N/A 0.1 U 0.1 U 0.1 U Methapyrilene N/A N/A N/A 0.1 U 0.1 U 0.1 U Methyl methanesulfonate N/A N/A N/A 0.01 U 0.01 U 0.01 U Methyl parathion NV NV NV 0.01 U 0.01 U 0.01 U Naphthalene E E E U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U Nitrobenzene E E E U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U NNitrosodiethylamine N/A N/A N/A 0.01 U 0.01 U 0.01 U NNitrosodimethylamine N/A N/A N/A U U U NNitrosodinbutylamine N/A N/A N/A 0.01 U 0.01 U 0.01 U NNitrosodinpropylamine NV NV NV 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U NNitrosodiphenylamine NV NV NV 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U NNitrosomethylethylamine N/A N/A N/A 0.01 U 0.01 U 0.01 U NNitrosopiperidine N/A N/A N/A 0.01 U 0.01 U 0.01 U NNitrosopyrrolidine N/A N/A N/A 0.01 U 0.01 U 0.01 U Pentachlorobenzene E E E U 0.01 U 0.01 U Pentachloronitrobenzene E E E U 0.05 U 0.05 U Pentachlorophenol NV NV NV U U U U U U Phenacetin N/A N/A N/A 0.05 U 0.05 U 0.05 U Phenanthrene E E E U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U Phenol NV NV NV 0.01 U 0.01 U J 0.01 U Phorate N/A N/A N/A 0.01 U 0.01 U 0.01 U pphenylenediamine N/A N/A N/A 0.01 UJ 0.01 UJ 0.01 UJ Pronamide N/A N/A N/A 0.01 U 0.01 U 0.01 U Pyrene E E E U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U Safrole N/A N/A N/A 0.01 U 0.01 U 0.01 U Thionazin (O,OdiethylO2pyrazinyl phosphorothioate) N/A N/A N/A U U U Metals Aluminum 0.05 NV NV NV 17.1 a 2.34 a J a 39.1 a 25.7 a 0.16 a 0.12 a 1.18 a 0.22 a Aluminum (dissolved) 0.05 NV NV NV a a 1.86 a a 0.05 U 0.05 U Antimony NV NV NV 0.05 U 0.05 U J a 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U Antimony (dissolved) NV NV NV 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U Arsenic 0.01 NV NV NV J J a a J J Arsenic (dissolved) 0.01 NV NV NV U J a U Barium 2 N/A N/A N/A J Barium (dissolved) 2 NV NV NV J Beryllium NV NV NV U U U U J U U U U Beryllium (dissolved) NV NV NV U U U U U U Cadmium NV NV NV U U U U U U U U U Cadmium (dissolved) NV NV NV U U U U U U Calcium NV NV NV J 98 Calcium (dissolved) NV NV NV Chromium NV NV NV U UJ U Chromium (dissolved) NV NV NV U U U 0.01 U U U Chromium VI (hexavalent) 0.1 NV NV NV 0.01 U 0.01 U 0.01 U Cobalt NV NV NV 0.01 U a a Cobalt (dissolved) NV NV NV 0.01 U 0.01 U 0.01 U Copper 1 NV NV NV J 0.01 U U 0.01 U 0.01 U J Copper (dissolved) 1 NV NV NV 0.01 U 0.01 U 0.01 U J 0.01 U 0.01 U Iron 0.3 NV NV NV 41.5 a 52.2 J a 5.12 a Iron (dissolved) 0.3 NV NV NV J a 1.65 J a Lead N/A N/A N/A a a U a a U U a J a Lead (dissolved) NV NV NV U U U U U U Manganese 0.05 NV NV NV 1.14 a J a J a J a a J a Manganese (dissolved) 0.05 NV NV NV U J U J 5.82 a J a Mercury E E E U U U Mercury (dissolved) E E E U U U Nickel NV NV NV U R a a 0.02 U 0.02 U a 0.02 U Memo32T2 T4 T6 6/7/2018

134 Table 6 Page 4 of 16 IU I Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s I I I I I I I I I I I I I I I I MW1S MW2S MW2S MW4S MW5S MW34 MW06445 MW06445 MW06445 MW06445 MW06939 MW06939 MW06939 MW06939 MW06951 MW06951 M50000 M40001 M40002Q M40003 H80142 M80004 M30026 M20200 M50548 MW06445 M30027 M20231 M20509 M20510Q M30025 M /15/ /16/ /16/ /16/ /18/ /19/ /3/1998 7/12/2000 3/29/ /8/ /4/1998 7/27/2000 1/17/2005 1/17/ /3/1998 7/12/2000 (Duplicate) (Duplicate) Criteria Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A Nickel (dissolved) NV NV NV 0.02 U 0.02 U 0.02 U 0.02 U a 0.02 U Selenium 0.05 NV NV NV U UJ U Selenium (dissolved) 0.05 NV NV NV U UJ U Silver 0.1 NV NV NV 0.01 U 0.01 U 0.01 U Silver (dissolved) 0.1 NV NV NV 0.01 U 0.01 U 0.01 U Thallium NV NV NV U U U Thallium (dissolved) NV NV NV U U U Tin NV NV NV 0.05 U 0.05 U 0.05 U Tin (dissolved) NV NV NV 0.05 U 0.05 U 0.05 U Vanadium NV NV NV a J a 0.01 U a a 0.01 U 0.01 U 0.01 U 0.01 U Vanadium (dissolved) NV NV NV 0.01 U 0.01 U a a 0.01 U 0.01 U Zinc 5 NV NV NV J J J J J J Zinc (dissolved) 5 NV NV NV 0.01 U J 0.01 U J J PCBs Aroclor1016 (PCB1016) 3.10E E E U U U U U U Aroclor1221 (PCB1221) 3.10E E E U U U U U U Aroclor1232 (PCB1232) 3.10E E E U U U U U U Aroclor1242 (PCB1242) 3.10E E E U U U U U U Aroclor1248 (PCB1248) 3.10E E E U U U U U U Aroclor1254 (PCB1254) 3.10E E E U U U U U U Aroclor1260 (PCB1260) 3.10E E E U U U U U U Total PCBs E E E U U U U U U Wet Alkalinity, total (as CaCO3) Ammonia E E E UJ 0.05 UJ 0.05 UJ 0.05 UJ 0.04 Bicarbonate (as CaCO3) Cyanide (total) E E E U 0.01 U 0.01 U 0.01 de 0.01 U 0.01 U Fluoride N/A N/A N/A 1.2 Formaldehyde E E E U U 0.05 U ph, lab s.u a Sulfide U Total dissolved solids (TDS) J a 2610 J a 2520 J a J a 334 Total kjeldahl nitrogen (TKN) FPARAM Conductivity, field umhos/cm Dissolved oxygen (DO), field Oxidation reduction potential (ORP) millivolts ph, field s.u a 9.31 a 9.42 a a 8.82 a 9.18 a 9.77 a Temperature, field Deg C Turbidity NTU Footnotes: U Not detected at the associated reporting limit. J Estimated concentration. UJ Not detected; associated reporting limit is estimated. R Rejected b Exceedance of DRAFT 2017 Part 201 Generic Cleanup Criteria and s 9.06 b Exceedance of screening levels in the latest round of groundwater data for a given location Downgradient sampling location included in the groundwater evaluation discussion Not analyzed NV MDEQ VI screening deemed Not Volatile N/A Not analyzed in MDEQ VI screening Memo32T2 T4 T6 6/7/2018

135 Table 6 Page 5 of 16 IU I Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s Criteria Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A VOAs a b c d e f 1,1,1,2Tetrachloroethane E E E02 1,1,1Trichloroethane E E E+00 1,1,2,2Tetrachloroethane E E E03 1,1,2Trichloroethane E E E06 1,1Dichloroethane E E E02 1,1Dichloroethene E E E01 1,1Dichloropropene N/A N/A N/A 1,2Dibromo3chloropropane (DBCP) E E E05 1,2Dibromoethane (Ethylene dibromide) E E E04 1,2Dichlorobenzene E E E+00 1,2Dichloroethane E E E03 1,2Dichloropropane E E E02 1,3Dichlorobenzene E E E02 1,3Dichloropropane N/A N/A N/A 1,4Dichlorobenzene E E E02 2,2Dichloropropane N/A N/A N/A 2Butanone (Methyl ethyl ketone) (MEK) E E E+01 2Hexanone E E E+00 4Methyl2pentanone (Methyl isobutyl ketone) (MIBK) E E E+00 Acetone E E E+02 Acetonitrile E E E+00 Acrolein E E E04 Acrylonitrile E E E02 Allyl chloride N/A N/A N/A Benzene E E E02 Bromodichloromethane E E E03 Bromoform E E E01 Bromomethane (Methyl bromide) E E E02 Carbon disulfide E E E+00 Carbon tetrachloride E E E02 Chlorobenzene E E E01 Chlorobromomethane N/A N/A N/A Chloroethane E E E+00 Chloroform (Trichloromethane) E E E03 Chloromethane (Methyl chloride) E E E01 Chloroprene N/A N/A N/A cis1,2dichloroethene E E E02 cis1,3dichloropropene NV NV NV cis1,4dichloro2butene N/A N/A N/A Dibromochloromethane E E E03 Dibromomethane E E E02 Dichlorodifluoromethane (CFC12) E E E01 Ethyl methacrylate N/A N/A N/A Ethylbenzene E E E02 Iodomethane N/A N/A N/A m&pxylenes N/A N/A N/A Methyl acrylonitrile N/A N/A N/A Methyl methacrylate N/A N/A N/A Methylene chloride E E E+00 Naphthalene E E E02 oxylene N/A N/A N/A Propionitrile (ethyl cyanide) N/A N/A N/A Styrene E E E01 Tetrachloroethene E E E02 Toluene E E E+00 trans1,2dichloroethene E E E01 trans1,3dichloropropene N/A N/A N/A trans1,4dichloro2butene N/A N/A N/A Trichloroethene E E E03 Trichlorofluoromethane (CFC11) E E E01 Vinyl acetate E E E+00 Vinyl chloride E E E02 I I I I I I I I I I I I I I I I MW06951 MW06951 MW07245 MW07245 MW07245 MW07245 MW07245 MW07959 MW07959 MW07959 MW07959 MW07959 MW96939 MW96939 MW96939 MW96939 M20516 MW06951 M10005 M10005Q M10006 M20201 M20202Q M30028 M10205 M50010 M20519 MW07959 M20246 M20247Q M80002 M /19/ /8/ /18/ /18/ /18/1998 7/12/2000 7/12/ /4/1998 7/12/ /20/2001 1/19/ /8/2005 8/4/2000 8/4/ /19/2001 1/18/2005 (Triplicate) (Duplicate) (Duplicate) (Duplicate) UJ UJ UJ U UJ UJ UJ U U U U U U UJ UJ UJ U U U U U U UJ UJ UJ U U U U U U UJ UJ UJ U U U U U UJ UJ UJ U U U U U U UJ UJ UJ U UJ UJ UJ U UJ UJ UJ U UJ UJ UJ U UJ UJ UJ U U U U U U UJ UJ UJ U U U U U U UJ UJ UJ U UJ UJ UJ U UJ UJ UJ U UJ UJ UJ U R R R R R R R 0.02 U 0.02 U 0.02 UJ 0.02 UJ 0.02 UJ 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U R R R R R R R 0.02 U 0.02 U R R R R J 0.16 J J 0.02 U 0.02 U R R R U R R R R 0.02 UJ 0.02 UJ 0.02 UJ 0.02 U UJ UJ UJ U J J J de de de U U UJ UJ UJ U U U U U U UJ UJ UJ U U U U U U UJ UJ UJ U U U U U U UJ UJ UJ U U U U UJ UJ UJ U U U U U U UJ UJ UJ U U U U U U UJ UJ UJ U UJ UJ UJ U U U U U U UJ UJ UJ U U U U U U UJ UJ UJ U U U U U U 0.01 UJ 0.01 UJ 0.01 UJ 0.01 U UJ UJ UJ U U U U U U UJ UJ UJ U U U U U U 0.01 UJ 0.01 UJ 0.01 UJ 0.01 U UJ UJ UJ U U U U U U UJ UJ UJ U UJ UJ UJ U UJ UJ UJ UJ UJ UJ UJ U U U U U U UJ UJ UJ U UJ UJ UJ U U U U U UJ UJ UJ U UJ UJ UJ UJ UJ UJ UJ U U U U U U UJ UJ UJ U UJ UJ UJ U U U R R R R UJ UJ UJ U U U U U U UJ UJ UJ U U U U U U J J UJ U U UJ UJ UJ U U U U U U UJ UJ UJ U U U U U U 0.01 UJ 0.01 UJ 0.01 UJ 0.01 U UJ UJ UJ U U U U U U UJ UJ UJ U UJ UJ UJ UJ UJ UJ UJ U U U U U U SVOAs 0,0,0Triethylphosphorothioate N/A N/A N/A 1,2,4,5Tetrachlorobenzene E E E03 1,2,4Trichlorobenzene E E E02 1,2Dichlorobenzene E E E+00 1,3,5Trinitrobenzene N/A N/A N/A 1,3Dichlorobenzene E E E U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U U 0.01 U R 0.01 U U U 0.01 U 0.01 U U U U U U 0.01 U R 0.01 U U U 0.01 U 0.01 U Memo32T2 T4 T6 6/7/2018

136 Table 6 Page 6 of 16 IU I Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s Criteria Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A 1,3Dinitrobenzene N/A N/A N/A 1,4Dichlorobenzene E E E02 1,4Naphthoquinone N/A N/A N/A 1Naphthylamine N/A N/A N/A 2,2'Oxybis(1chloropropane) (bis(2chloroisopropyl) ether) N/A N/A N/A 2,2'Oxybis(2chloropropane) (bis(2chloroisopropyl) ether) 2,3,4,6Tetrachlorophenol N/A N/A N/A 2,4,5Trichlorophenol NV NV NV 2,4,6Trichlorophenol NV NV NV 2,4Dichlorophenol NV NV NV 2,4Dimethylphenol NV NV NV 2,4Dinitrophenol NV NV NV 2,4Dinitrotoluene NV NV NV 2,6Dichlorophenol N/A N/A N/A 2,6Dinitrotoluene N/A N/A N/A 2Acetylaminofluorene N/A N/A N/A 2Chloronaphthalene N/A N/A N/A 2Chlorophenol E E E01 2Methylnaphthalene E E E01 2Methylphenol NV NV NV 2Naphthylamine N/A N/A N/A 2Nitroaniline N/A N/A N/A 2Nitrophenol E E E03 2Toluidine N/A N/A N/A 3&4Methylphenol N/A N/A N/A 3,3'Dichlorobenzidine NV NV NV 3,3Dimethylbenzidine N/A N/A N/A 3Methylcholanthrene N/A N/A N/A 3Nitroaniline N/A N/A N/A 4,6Dinitro2methylphenol NV NV NV 4Aminobiphenyl N/A N/A N/A 4Bromophenyl phenyl ether N/A N/A N/A 4Chloro3methylphenol NV NV NV 4Chloroaniline NV NV NV 4Chlorophenyl phenyl ether N/A N/A N/A 4Dimethylaminoazobenzene N/A N/A N/A 4Methylphenol N/A N/A N/A 4Nitroaniline N/A N/A N/A 4Nitrophenol N/A N/A N/A 5Nitro2toluidine N/A N/A N/A 7,12Dimethylbenz(a)anthracene N/A N/A N/A Acenaphthene E E E+00 Acenaphthylene E E E+00 Acetophenone E E E+01 Anthracene E E E02 Benzo(a)anthracene E E E03 Benzo(a)pyrene NV NV NV Benzo(b)fluoranthene NV NV NV Benzo(g,h,i)perylene NV NV NV Benzo(k)fluoranthene NV NV NV Benzyl alcohol NV NV NV bis(2chloroethoxy)methane N/A N/A N/A bis(2chloroethyl)ether E E E02 bis(2ethylhexyl)phthalate (DEHP) NV NV NV Butyl benzylphthalate (BBP) NV NV NV Carbazole NV NV NV Chlorobenzilate N/A N/A N/A Chrysene NV NV NV Diallate N/A N/A N/A Dibenz(a,h)anthracene NV NV NV Dibenzofuran E E E+00 Diethyl phthalate NV NV NV Dimethoate N/A N/A N/A Dimethyl phthalate NV NV NV Dinbutylphthalate (DBP) NV NV NV Dinoctyl phthalate (DnOP) E E E02 Dinoseb NV NV NV Diphenylamine N/A N/A N/A Disulfoton N/A N/A N/A Ethyl methanesulfonate N/A N/A N/A Ethyl parathion N/A N/A N/A Famphur N/A N/A N/A Fluoranthene NV NV NV I I I I I I I I I I I I I I I I MW06951 MW06951 MW07245 MW07245 MW07245 MW07245 MW07245 MW07959 MW07959 MW07959 MW07959 MW07959 MW96939 MW96939 MW96939 MW96939 M20516 MW06951 M10005 M10005Q M10006 M20201 M20202Q M30028 M10205 M50010 M20519 MW07959 M20246 M20247Q M80002 M /19/ /8/ /18/ /18/ /18/1998 7/12/2000 7/12/ /4/1998 7/12/ /20/2001 1/19/ /8/2005 8/4/2000 8/4/ /19/2001 1/18/2005 (Triplicate) (Duplicate) (Duplicate) (Duplicate) 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U R 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U J 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U J 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U J 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U R 0.89 a 0.43 a 0.63 a 0.14 a 0.01 U 0.01 U U U U U U R U U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U J 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U J 0.01 U 0.01 U U J 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U J U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U R U U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U J U 0.01 U U U U U U R U U U U U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U R U U U U U U U U U U U R U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U U R U U U U U U U U U U U R U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 UJ U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U U 0.01 U R U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U U U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U Memo32T2 T4 T6 6/7/2018

137 Table 6 Page 7 of 16 IU I Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s Criteria Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A Fluorene E E E+00 Hexachlorobenzene E E E04 Hexachlorobutadiene E E E03 Hexachlorocyclopentadiene E E E04 Hexachloroethane E E E02 Hexachloropropene N/A N/A N/A Indeno(1,2,3cd)pyrene NV NV NV Isodrin N/A N/A N/A Isophorone NV NV NV Isosafrole N/A N/A N/A Kepone N/A N/A N/A Methapyrilene N/A N/A N/A Methyl methanesulfonate N/A N/A N/A Methyl parathion NV NV NV Naphthalene E E E02 Nitrobenzene E E E01 NNitrosodiethylamine N/A N/A N/A NNitrosodimethylamine N/A N/A N/A NNitrosodinbutylamine N/A N/A N/A NNitrosodinpropylamine NV NV NV NNitrosodiphenylamine NV NV NV NNitrosomethylethylamine N/A N/A N/A NNitrosopiperidine N/A N/A N/A NNitrosopyrrolidine N/A N/A N/A Pentachlorobenzene E E E04 Pentachloronitrobenzene E E E01 Pentachlorophenol NV NV NV Phenacetin N/A N/A N/A Phenanthrene E E E04 Phenol NV NV NV Phorate N/A N/A N/A pphenylenediamine N/A N/A N/A Pronamide N/A N/A N/A Pyrene E E E01 Safrole N/A N/A N/A Thionazin (O,OdiethylO2pyrazinyl phosphorothioate) N/A N/A N/A I I I I I I I I I I I I I I I I MW06951 MW06951 MW07245 MW07245 MW07245 MW07245 MW07245 MW07959 MW07959 MW07959 MW07959 MW07959 MW96939 MW96939 MW96939 MW96939 M20516 MW06951 M10005 M10005Q M10006 M20201 M20202Q M30028 M10205 M50010 M20519 MW07959 M20246 M20247Q M80002 M /19/ /8/ /18/ /18/ /18/1998 7/12/2000 7/12/ /4/1998 7/12/ /20/2001 1/19/ /8/2005 8/4/2000 8/4/ /19/2001 1/18/2005 (Triplicate) (Duplicate) (Duplicate) (Duplicate) U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U de J de 0.01 U U J 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U U U U 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.05 U 0.05 U 0.05 U 0.05 U U U U U U R U U a U U U 0.05 U 0.05 U 0.05 U 0.05 U U 0.01 U 0.01 U 0.01 U def R 0.01 U 0.01 U U U 0.01 U 0.01 U U 0.23 J J J 0.15 J J 5.2 a 1.8 a 1.9 a U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 UJ 0.01 UJ 0.01 UJ 0.01 UJ 0.01 U 0.01 U 0.01 U 0.01 U U 0.01 U 0.01 U 0.01 U 0.01 U R 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U U U U Metals Aluminum 0.05 NV NV NV Aluminum (dissolved) 0.05 NV NV NV Antimony NV NV NV Antimony (dissolved) NV NV NV Arsenic 0.01 NV NV NV Arsenic (dissolved) 0.01 NV NV NV Barium 2 N/A N/A N/A Barium (dissolved) 2 NV NV NV Beryllium NV NV NV Beryllium (dissolved) NV NV NV Cadmium NV NV NV Cadmium (dissolved) NV NV NV Calcium NV NV NV Calcium (dissolved) NV NV NV Chromium NV NV NV Chromium (dissolved) NV NV NV Chromium VI (hexavalent) 0.1 NV NV NV Cobalt NV NV NV Cobalt (dissolved) NV NV NV Copper 1 NV NV NV Copper (dissolved) 1 NV NV NV Iron 0.3 NV NV NV Iron (dissolved) 0.3 NV NV NV Lead N/A N/A N/A Lead (dissolved) NV NV NV Manganese 0.05 NV NV NV Manganese (dissolved) 0.05 NV NV NV Mercury E E E04 Mercury (dissolved) E E E04 Nickel NV NV NV 0.05 U 25.5 a 25.3 a 23.1 a 40.4 a 74.4 a 61.3 a 6.58 a a 3.13 a 2.87 a a a 0.05 U 0.05 U 0.05 U 3.3 a a J 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U J a 0.05 U 0.05 U 0.05 U J a 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U a a a a a a a U J J a a a 0.04 a a U U U U U U J J a a U U U U U U U U U U U U U U U U U U U J a U U U U U U U U U U U U U U J U U J J J U U U U U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U J 0.01 U 0.01 U 0.01 U a 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U J 0.01 U 0.01 U 28.4 a 28.8 a 25.6 a 141 J a J J J U a a a a a 2.14 a a J a a a J a U U U U U U U U U a 1.28 a 1.31 a 1.22 a 2.91 J a 5.42 J a 19.1 J a 1.18 J a a a a a a a a J a 1.89 J a U J a 0.17 a U U U de U U U U 0.02 U a a a a a 0.02 U J 0.02 U 0.02 U J Memo32T2 T4 T6 6/7/2018

138 Table 6 Page 8 of 16 IU I Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s Criteria Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A Nickel (dissolved) NV NV NV Selenium 0.05 NV NV NV Selenium (dissolved) 0.05 NV NV NV Silver 0.1 NV NV NV Silver (dissolved) 0.1 NV NV NV Thallium NV NV NV Thallium (dissolved) NV NV NV Tin NV NV NV Tin (dissolved) NV NV NV Vanadium NV NV NV Vanadium (dissolved) NV NV NV Zinc 5 NV NV NV Zinc (dissolved) 5 NV NV NV I I I I I I I I I I I I I I I I MW06951 MW06951 MW07245 MW07245 MW07245 MW07245 MW07245 MW07959 MW07959 MW07959 MW07959 MW07959 MW96939 MW96939 MW96939 MW96939 M20516 MW06951 M10005 M10005Q M10006 M20201 M20202Q M30028 M10205 M50010 M20519 MW07959 M20246 M20247Q M80002 M /19/ /8/ /18/ /18/ /18/1998 7/12/2000 7/12/ /4/1998 7/12/ /20/2001 1/19/ /8/2005 8/4/2000 8/4/ /19/2001 1/18/2005 (Triplicate) (Duplicate) (Duplicate) (Duplicate) 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U UJ UJ UJ UJ UJ UJ UJ UJ 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U U U U U U U U U 0.05 U 0.05 U 0.05 U U 0.05 U 0.05 U 0.05 U 0.01 U a a a a a a a 0.01 U J a J a 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U a 0.01 U 0.01 U J J 2.14 J 37.1 a 2.26 J J J J J 0.01 U 0.01 U 0.01 U 0.01 U J 0.01 U 0.01 U 0.01 U J PCBs Aroclor1016 (PCB1016) 3.10E E E03 Aroclor1221 (PCB1221) 3.10E E E03 Aroclor1232 (PCB1232) 3.10E E E03 Aroclor1242 (PCB1242) 3.10E E E03 Aroclor1248 (PCB1248) 3.10E E E03 Aroclor1254 (PCB1254) 3.10E E E03 Aroclor1260 (PCB1260) 3.10E E E03 Total PCBs E E E U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U Wet Alkalinity, total (as CaCO3) Ammonia E E E+00 Bicarbonate (as CaCO3) Cyanide (total) E E E02 Fluoride N/A N/A N/A Formaldehyde E E E+01 ph, lab s.u Sulfide Total dissolved solids (TDS) 500 Total kjeldahl nitrogen (TKN) def 20.3 adef 10.0 def 0.01 U 0.01 de 0.01 de 0.03 def 0.02 def 0.42 adef 0.25 adef 0.21 adef J 0.01 U UJ 0.05 UJ 0.05 UJ R U 0.05 U 0.59 J 0.94 J 0.62 J a FPARAM Conductivity, field umhos/cm Dissolved oxygen (DO), field Oxidation reduction potential (ORP) millivolts ph, field s.u Temperature, field Deg C Turbidity NTU a 9.49 a a 9.72 a 9.72 a Footnotes: U Not detected at the associated reporting limit. J Estimated concentration. UJ Not detected; associated reporting limit is estimated. R Rejected b Exceedance of DRAFT 2017 Part 201 Generic Cleanup Criteria and s 9.06 b Exceedance of screening levels in the latest round of groundwater data for a given location Downgradient sampling location included in the groundwater evaluation discussion Not analyzed NV MDEQ VI screening deemed Not Volatile N/A Not analyzed in MDEQ VI screening Memo32T2 T4 T6 6/7/2018

139 Table 6 Page 9 of 16 IU I Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s Criteria Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A VOAs a b c d e f 1,1,1,2Tetrachloroethane E E E02 1,1,1Trichloroethane E E E+00 1,1,2,2Tetrachloroethane E E E03 1,1,2Trichloroethane E E E06 1,1Dichloroethane E E E02 1,1Dichloroethene E E E01 1,1Dichloropropene N/A N/A N/A 1,2Dibromo3chloropropane (DBCP) E E E05 1,2Dibromoethane (Ethylene dibromide) E E E04 1,2Dichlorobenzene E E E+00 1,2Dichloroethane E E E03 1,2Dichloropropane E E E02 1,3Dichlorobenzene E E E02 1,3Dichloropropane N/A N/A N/A 1,4Dichlorobenzene E E E02 2,2Dichloropropane N/A N/A N/A 2Butanone (Methyl ethyl ketone) (MEK) E E E+01 2Hexanone E E E+00 4Methyl2pentanone (Methyl isobutyl ketone) (MIBK) E E E+00 Acetone E E E+02 Acetonitrile E E E+00 Acrolein E E E04 Acrylonitrile E E E02 Allyl chloride N/A N/A N/A Benzene E E E02 Bromodichloromethane E E E03 Bromoform E E E01 Bromomethane (Methyl bromide) E E E02 Carbon disulfide E E E+00 Carbon tetrachloride E E E02 Chlorobenzene E E E01 Chlorobromomethane N/A N/A N/A Chloroethane E E E+00 Chloroform (Trichloromethane) E E E03 Chloromethane (Methyl chloride) E E E01 Chloroprene N/A N/A N/A cis1,2dichloroethene E E E02 cis1,3dichloropropene NV NV NV cis1,4dichloro2butene N/A N/A N/A Dibromochloromethane E E E03 Dibromomethane E E E02 Dichlorodifluoromethane (CFC12) E E E01 Ethyl methacrylate N/A N/A N/A Ethylbenzene E E E02 Iodomethane N/A N/A N/A m&pxylenes N/A N/A N/A Methyl acrylonitrile N/A N/A N/A Methyl methacrylate N/A N/A N/A Methylene chloride E E E+00 Naphthalene E E E02 oxylene N/A N/A N/A Propionitrile (ethyl cyanide) N/A N/A N/A Styrene E E E01 Tetrachloroethene E E E02 Toluene E E E+00 trans1,2dichloroethene E E E01 trans1,3dichloropropene N/A N/A N/A trans1,4dichloro2butene N/A N/A N/A Trichloroethene E E E03 Trichlorofluoromethane (CFC11) E E E01 Vinyl acetate E E E+00 Vinyl chloride E E E02 I I I I I I I I I I I I I I I MW96939 TMW6 TMW06037 TMW06243 TMW06243A TMW06243A TMW06652 TMW06848 TMW06951 TMW06951 TMW07048 TMW07257 TMW07356 TMW07457 TMW07459 MW96939 H80003 H80007 H80005 H50139 H50140Q H50138 H80006 H50135 H50136Q H50137 H50006 H50133 H50007 H /8/ /19/ /20/ /20/ /17/ /17/ /17/ /20/ /17/ /17/ /17/ /20/ /17/ /20/ /20/2001 (Duplicate) (Duplicate) SVOAs 0,0,0Triethylphosphorothioate N/A N/A N/A 1,2,4,5Tetrachlorobenzene E E E03 1,2,4Trichlorobenzene E E E02 1,2Dichlorobenzene E E E+00 1,3,5Trinitrobenzene N/A N/A N/A 1,3Dichlorobenzene E E E U U 0.01 U U U 0.01 U U U 0.01 U Memo32T2 T4 T6 6/7/2018

140 Table 6 Page 10 of 16 IU I Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s Criteria Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A 1,3Dinitrobenzene N/A N/A N/A 1,4Dichlorobenzene E E E02 1,4Naphthoquinone N/A N/A N/A 1Naphthylamine N/A N/A N/A 2,2'Oxybis(1chloropropane) (bis(2chloroisopropyl) ether) N/A N/A N/A 2,2'Oxybis(2chloropropane) (bis(2chloroisopropyl) ether) 2,3,4,6Tetrachlorophenol N/A N/A N/A 2,4,5Trichlorophenol NV NV NV 2,4,6Trichlorophenol NV NV NV 2,4Dichlorophenol NV NV NV 2,4Dimethylphenol NV NV NV 2,4Dinitrophenol NV NV NV 2,4Dinitrotoluene NV NV NV 2,6Dichlorophenol N/A N/A N/A 2,6Dinitrotoluene N/A N/A N/A 2Acetylaminofluorene N/A N/A N/A 2Chloronaphthalene N/A N/A N/A 2Chlorophenol E E E01 2Methylnaphthalene E E E01 2Methylphenol NV NV NV 2Naphthylamine N/A N/A N/A 2Nitroaniline N/A N/A N/A 2Nitrophenol E E E03 2Toluidine N/A N/A N/A 3&4Methylphenol N/A N/A N/A 3,3'Dichlorobenzidine NV NV NV 3,3Dimethylbenzidine N/A N/A N/A 3Methylcholanthrene N/A N/A N/A 3Nitroaniline N/A N/A N/A 4,6Dinitro2methylphenol NV NV NV 4Aminobiphenyl N/A N/A N/A 4Bromophenyl phenyl ether N/A N/A N/A 4Chloro3methylphenol NV NV NV 4Chloroaniline NV NV NV 4Chlorophenyl phenyl ether N/A N/A N/A 4Dimethylaminoazobenzene N/A N/A N/A 4Methylphenol N/A N/A N/A 4Nitroaniline N/A N/A N/A 4Nitrophenol N/A N/A N/A 5Nitro2toluidine N/A N/A N/A 7,12Dimethylbenz(a)anthracene N/A N/A N/A Acenaphthene E E E+00 Acenaphthylene E E E+00 Acetophenone E E E+01 Anthracene E E E02 Benzo(a)anthracene E E E03 Benzo(a)pyrene NV NV NV Benzo(b)fluoranthene NV NV NV Benzo(g,h,i)perylene NV NV NV Benzo(k)fluoranthene NV NV NV Benzyl alcohol NV NV NV bis(2chloroethoxy)methane N/A N/A N/A bis(2chloroethyl)ether E E E02 bis(2ethylhexyl)phthalate (DEHP) NV NV NV Butyl benzylphthalate (BBP) NV NV NV Carbazole NV NV NV Chlorobenzilate N/A N/A N/A Chrysene NV NV NV Diallate N/A N/A N/A Dibenz(a,h)anthracene NV NV NV Dibenzofuran E E E+00 Diethyl phthalate NV NV NV Dimethoate N/A N/A N/A Dimethyl phthalate NV NV NV Dinbutylphthalate (DBP) NV NV NV Dinoctyl phthalate (DnOP) E E E02 Dinoseb NV NV NV Diphenylamine N/A N/A N/A Disulfoton N/A N/A N/A Ethyl methanesulfonate N/A N/A N/A Ethyl parathion N/A N/A N/A Famphur N/A N/A N/A Fluoranthene NV NV NV I I I I I I I I I I I I I I I MW96939 TMW6 TMW06037 TMW06243 TMW06243A TMW06243A TMW06652 TMW06848 TMW06951 TMW06951 TMW07048 TMW07257 TMW07356 TMW07457 TMW07459 MW96939 H80003 H80007 H80005 H50139 H50140Q H50138 H80006 H50135 H50136Q H50137 H50006 H50133 H50007 H /8/ /19/ /20/ /20/ /17/ /17/ /17/ /20/ /17/ /17/ /17/ /20/ /17/ /20/ /20/2001 (Duplicate) (Duplicate) U U 0.01 U U U 0.01 U U U U U U U a U U U U U 0.01 U U U 0.01 U U U 0.01 U U U U U 0.01 U U U U U U U 0.01 U U U U U U U U U U U U 0.01 U U U 0.01 U U U 0.01 U U U 0.01 U U U U U U U U U 0.01 U U U 0.01 U U U 0.01 U U U 0.01 U U U 0.01 U U U 0.01 U U U 0.01 U U U 0.01 U U U 0.01 U U U 0.01 U U U 0.01 U U U 0.01 U U U 0.01 U U U 0.01 U U U 0.01 U U U 0.01 U U U 0.01 U U U 0.01 U U U 0.01 U U U 0.01 U U U 0.01 U Memo32T2 T4 T6 6/7/2018

141 Table 6 Page 11 of 16 IU I Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s Criteria Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A Fluorene E E E+00 Hexachlorobenzene E E E04 Hexachlorobutadiene E E E03 Hexachlorocyclopentadiene E E E04 Hexachloroethane E E E02 Hexachloropropene N/A N/A N/A Indeno(1,2,3cd)pyrene NV NV NV Isodrin N/A N/A N/A Isophorone NV NV NV Isosafrole N/A N/A N/A Kepone N/A N/A N/A Methapyrilene N/A N/A N/A Methyl methanesulfonate N/A N/A N/A Methyl parathion NV NV NV Naphthalene E E E02 Nitrobenzene E E E01 NNitrosodiethylamine N/A N/A N/A NNitrosodimethylamine N/A N/A N/A NNitrosodinbutylamine N/A N/A N/A NNitrosodinpropylamine NV NV NV NNitrosodiphenylamine NV NV NV NNitrosomethylethylamine N/A N/A N/A NNitrosopiperidine N/A N/A N/A NNitrosopyrrolidine N/A N/A N/A Pentachlorobenzene E E E04 Pentachloronitrobenzene E E E01 Pentachlorophenol NV NV NV Phenacetin N/A N/A N/A Phenanthrene E E E04 Phenol NV NV NV Phorate N/A N/A N/A pphenylenediamine N/A N/A N/A Pronamide N/A N/A N/A Pyrene E E E01 Safrole N/A N/A N/A Thionazin (O,OdiethylO2pyrazinyl phosphorothioate) N/A N/A N/A I I I I I I I I I I I I I I I MW96939 TMW6 TMW06037 TMW06243 TMW06243A TMW06243A TMW06652 TMW06848 TMW06951 TMW06951 TMW07048 TMW07257 TMW07356 TMW07457 TMW07459 MW96939 H80003 H80007 H80005 H50139 H50140Q H50138 H80006 H50135 H50136Q H50137 H50006 H50133 H50007 H /8/ /19/ /20/ /20/ /17/ /17/ /17/ /20/ /17/ /17/ /17/ /20/ /17/ /20/ /20/2001 (Duplicate) (Duplicate) U U 0.01 U U U 0.01 U U U 0.01 U U U 0.01 U U U 0.01 U U U 0.01 U U U 0.01 U U U U U 0.01 U U U 0.01 U U U 0.01 U U U a U U 0.01 U U U 2.6 a U U 0.01 U Metals Aluminum 0.05 NV NV NV Aluminum (dissolved) 0.05 NV NV NV Antimony NV NV NV Antimony (dissolved) NV NV NV Arsenic 0.01 NV NV NV Arsenic (dissolved) 0.01 NV NV NV Barium 2 N/A N/A N/A Barium (dissolved) 2 NV NV NV Beryllium NV NV NV Beryllium (dissolved) NV NV NV Cadmium NV NV NV Cadmium (dissolved) NV NV NV Calcium NV NV NV Calcium (dissolved) NV NV NV Chromium NV NV NV Chromium (dissolved) NV NV NV Chromium VI (hexavalent) 0.1 NV NV NV Cobalt NV NV NV Cobalt (dissolved) NV NV NV Copper 1 NV NV NV Copper (dissolved) 1 NV NV NV Iron 0.3 NV NV NV Iron (dissolved) 0.3 NV NV NV Lead N/A N/A N/A Lead (dissolved) NV NV NV Manganese 0.05 NV NV NV Manganese (dissolved) 0.05 NV NV NV Mercury E E E04 Mercury (dissolved) E E E04 Nickel NV NV NV Memo32T2 T4 T6 6/7/2018

142 Table 6 Page 12 of 16 IU I Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s Criteria Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A Nickel (dissolved) NV NV NV Selenium 0.05 NV NV NV Selenium (dissolved) 0.05 NV NV NV Silver 0.1 NV NV NV Silver (dissolved) 0.1 NV NV NV Thallium NV NV NV Thallium (dissolved) NV NV NV Tin NV NV NV Tin (dissolved) NV NV NV Vanadium NV NV NV Vanadium (dissolved) NV NV NV Zinc 5 NV NV NV Zinc (dissolved) 5 NV NV NV I I I I I I I I I I I I I I I MW96939 TMW6 TMW06037 TMW06243 TMW06243A TMW06243A TMW06652 TMW06848 TMW06951 TMW06951 TMW07048 TMW07257 TMW07356 TMW07457 TMW07459 MW96939 H80003 H80007 H80005 H50139 H50140Q H50138 H80006 H50135 H50136Q H50137 H50006 H50133 H50007 H /8/ /19/ /20/ /20/ /17/ /17/ /17/ /20/ /17/ /17/ /17/ /20/ /17/ /20/ /20/2001 (Duplicate) (Duplicate) PCBs Aroclor1016 (PCB1016) 3.10E E E03 Aroclor1221 (PCB1221) 3.10E E E03 Aroclor1232 (PCB1232) 3.10E E E03 Aroclor1242 (PCB1242) 3.10E E E03 Aroclor1248 (PCB1248) 3.10E E E03 Aroclor1254 (PCB1254) 3.10E E E03 Aroclor1260 (PCB1260) 3.10E E E03 Total PCBs E E E03 Wet Alkalinity, total (as CaCO3) Ammonia E E E+00 Bicarbonate (as CaCO3) Cyanide (total) E E E02 Fluoride N/A N/A N/A Formaldehyde E E E+01 ph, lab s.u Sulfide Total dissolved solids (TDS) 500 Total kjeldahl nitrogen (TKN) de 6.18 J def 15.8 adef 40.2 J adef adef 11 adef 8.12 def 30.5 adef 0.01 de 0.03 def 0.26 adef a 2170 a 756 a 1080 a 1750 a 1990 a FPARAM Conductivity, field umhos/cm Dissolved oxygen (DO), field Oxidation reduction potential (ORP) millivolts ph, field s.u Temperature, field Deg C Turbidity NTU a a a a a a a a a 9.91 a a Footnotes: U Not detected at the associated reporting limit. J Estimated concentration. UJ Not detected; associated reporting limit is estimated. R Rejected b Exceedance of DRAFT 2017 Part 201 Generic Cleanup Criteria and s 9.06 b Exceedance of screening levels in the latest round of groundwater data for a given location Downgradient sampling location included in the groundwater evaluation discussion Not analyzed NV MDEQ VI screening deemed Not Volatile N/A Not analyzed in MDEQ VI screening Memo32T2 T4 T6 6/7/2018

143 Table 6 Page 13 of 16 IU I Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s I I TMW07957 TMW07962 H50009 H /20/ /20/2001 Criteria Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A VOAs a b c d e f 1,1,1,2Tetrachloroethane E E E02 1,1,1Trichloroethane E E E+00 1,1,2,2Tetrachloroethane E E E03 1,1,2Trichloroethane E E E06 1,1Dichloroethane E E E02 1,1Dichloroethene E E E01 1,1Dichloropropene N/A N/A N/A 1,2Dibromo3chloropropane (DBCP) E E E05 1,2Dibromoethane (Ethylene dibromide) E E E04 1,2Dichlorobenzene E E E+00 1,2Dichloroethane E E E03 1,2Dichloropropane E E E02 1,3Dichlorobenzene E E E02 1,3Dichloropropane N/A N/A N/A 1,4Dichlorobenzene E E E02 2,2Dichloropropane N/A N/A N/A 2Butanone (Methyl ethyl ketone) (MEK) E E E+01 2Hexanone E E E+00 4Methyl2pentanone (Methyl isobutyl ketone) (MIBK) E E E+00 Acetone E E E+02 Acetonitrile E E E+00 Acrolein E E E04 Acrylonitrile E E E02 Allyl chloride N/A N/A N/A Benzene E E E02 Bromodichloromethane E E E03 Bromoform E E E01 Bromomethane (Methyl bromide) E E E02 Carbon disulfide E E E+00 Carbon tetrachloride E E E02 Chlorobenzene E E E01 Chlorobromomethane N/A N/A N/A Chloroethane E E E+00 Chloroform (Trichloromethane) E E E03 Chloromethane (Methyl chloride) E E E01 Chloroprene N/A N/A N/A cis1,2dichloroethene E E E02 cis1,3dichloropropene NV NV NV cis1,4dichloro2butene N/A N/A N/A Dibromochloromethane E E E03 Dibromomethane E E E02 Dichlorodifluoromethane (CFC12) E E E01 Ethyl methacrylate N/A N/A N/A Ethylbenzene E E E02 Iodomethane N/A N/A N/A m&pxylenes N/A N/A N/A Methyl acrylonitrile N/A N/A N/A Methyl methacrylate N/A N/A N/A Methylene chloride E E E+00 Naphthalene E E E02 oxylene N/A N/A N/A Propionitrile (ethyl cyanide) N/A N/A N/A Styrene E E E01 Tetrachloroethene E E E02 Toluene E E E+00 trans1,2dichloroethene E E E01 trans1,3dichloropropene N/A N/A N/A trans1,4dichloro2butene N/A N/A N/A Trichloroethene E E E03 Trichlorofluoromethane (CFC11) E E E01 Vinyl acetate E E E+00 Vinyl chloride E E E02 SVOAs 0,0,0Triethylphosphorothioate N/A N/A N/A 1,2,4,5Tetrachlorobenzene E E E03 1,2,4Trichlorobenzene E E E02 1,2Dichlorobenzene E E E+00 1,3,5Trinitrobenzene N/A N/A N/A 1,3Dichlorobenzene E E E U U U U U U Memo32T2 T4 T6 6/7/2018

144 Table 6 Page 14 of 16 IU I Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s Criteria Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A 1,3Dinitrobenzene N/A N/A N/A 1,4Dichlorobenzene E E E02 1,4Naphthoquinone N/A N/A N/A 1Naphthylamine N/A N/A N/A 2,2'Oxybis(1chloropropane) (bis(2chloroisopropyl) ether) N/A N/A N/A 2,2'Oxybis(2chloropropane) (bis(2chloroisopropyl) ether) 2,3,4,6Tetrachlorophenol N/A N/A N/A 2,4,5Trichlorophenol NV NV NV 2,4,6Trichlorophenol NV NV NV 2,4Dichlorophenol NV NV NV 2,4Dimethylphenol NV NV NV 2,4Dinitrophenol NV NV NV 2,4Dinitrotoluene NV NV NV 2,6Dichlorophenol N/A N/A N/A 2,6Dinitrotoluene N/A N/A N/A 2Acetylaminofluorene N/A N/A N/A 2Chloronaphthalene N/A N/A N/A 2Chlorophenol E E E01 2Methylnaphthalene E E E01 2Methylphenol NV NV NV 2Naphthylamine N/A N/A N/A 2Nitroaniline N/A N/A N/A 2Nitrophenol E E E03 2Toluidine N/A N/A N/A 3&4Methylphenol N/A N/A N/A 3,3'Dichlorobenzidine NV NV NV 3,3Dimethylbenzidine N/A N/A N/A 3Methylcholanthrene N/A N/A N/A 3Nitroaniline N/A N/A N/A 4,6Dinitro2methylphenol NV NV NV 4Aminobiphenyl N/A N/A N/A 4Bromophenyl phenyl ether N/A N/A N/A 4Chloro3methylphenol NV NV NV 4Chloroaniline NV NV NV 4Chlorophenyl phenyl ether N/A N/A N/A 4Dimethylaminoazobenzene N/A N/A N/A 4Methylphenol N/A N/A N/A 4Nitroaniline N/A N/A N/A 4Nitrophenol N/A N/A N/A 5Nitro2toluidine N/A N/A N/A 7,12Dimethylbenz(a)anthracene N/A N/A N/A Acenaphthene E E E+00 Acenaphthylene E E E+00 Acetophenone E E E+01 Anthracene E E E02 Benzo(a)anthracene E E E03 Benzo(a)pyrene NV NV NV Benzo(b)fluoranthene NV NV NV Benzo(g,h,i)perylene NV NV NV Benzo(k)fluoranthene NV NV NV Benzyl alcohol NV NV NV bis(2chloroethoxy)methane N/A N/A N/A bis(2chloroethyl)ether E E E02 bis(2ethylhexyl)phthalate (DEHP) NV NV NV Butyl benzylphthalate (BBP) NV NV NV Carbazole NV NV NV Chlorobenzilate N/A N/A N/A Chrysene NV NV NV Diallate N/A N/A N/A Dibenz(a,h)anthracene NV NV NV Dibenzofuran E E E+00 Diethyl phthalate NV NV NV Dimethoate N/A N/A N/A Dimethyl phthalate NV NV NV Dinbutylphthalate (DBP) NV NV NV Dinoctyl phthalate (DnOP) E E E02 Dinoseb NV NV NV Diphenylamine N/A N/A N/A Disulfoton N/A N/A N/A Ethyl methanesulfonate N/A N/A N/A Ethyl parathion N/A N/A N/A Famphur N/A N/A N/A Fluoranthene NV NV NV I I TMW07957 TMW07962 H50009 H /20/ /20/ U U U U U U U U U 0.39 a U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U Memo32T2 T4 T6 6/7/2018

145 Table 6 Page 15 of 16 IU I Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s Criteria Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A Fluorene E E E+00 Hexachlorobenzene E E E04 Hexachlorobutadiene E E E03 Hexachlorocyclopentadiene E E E04 Hexachloroethane E E E02 Hexachloropropene N/A N/A N/A Indeno(1,2,3cd)pyrene NV NV NV Isodrin N/A N/A N/A Isophorone NV NV NV Isosafrole N/A N/A N/A Kepone N/A N/A N/A Methapyrilene N/A N/A N/A Methyl methanesulfonate N/A N/A N/A Methyl parathion NV NV NV Naphthalene E E E02 Nitrobenzene E E E01 NNitrosodiethylamine N/A N/A N/A NNitrosodimethylamine N/A N/A N/A NNitrosodinbutylamine N/A N/A N/A NNitrosodinpropylamine NV NV NV NNitrosodiphenylamine NV NV NV NNitrosomethylethylamine N/A N/A N/A NNitrosopiperidine N/A N/A N/A NNitrosopyrrolidine N/A N/A N/A Pentachlorobenzene E E E04 Pentachloronitrobenzene E E E01 Pentachlorophenol NV NV NV Phenacetin N/A N/A N/A Phenanthrene E E E04 Phenol NV NV NV Phorate N/A N/A N/A pphenylenediamine N/A N/A N/A Pronamide N/A N/A N/A Pyrene E E E01 Safrole N/A N/A N/A Thionazin (O,OdiethylO2pyrazinyl phosphorothioate) N/A N/A N/A I I TMW07957 TMW07962 H50009 H /20/ /20/ U U U U U U U U U U U U U U U U U U U U U U U a U U U 2.6 a U U Metals Aluminum 0.05 NV NV NV Aluminum (dissolved) 0.05 NV NV NV Antimony NV NV NV Antimony (dissolved) NV NV NV Arsenic 0.01 NV NV NV Arsenic (dissolved) 0.01 NV NV NV Barium 2 N/A N/A N/A Barium (dissolved) 2 NV NV NV Beryllium NV NV NV Beryllium (dissolved) NV NV NV Cadmium NV NV NV Cadmium (dissolved) NV NV NV Calcium NV NV NV Calcium (dissolved) NV NV NV Chromium NV NV NV Chromium (dissolved) NV NV NV Chromium VI (hexavalent) 0.1 NV NV NV Cobalt NV NV NV Cobalt (dissolved) NV NV NV Copper 1 NV NV NV Copper (dissolved) 1 NV NV NV Iron 0.3 NV NV NV Iron (dissolved) 0.3 NV NV NV Lead N/A N/A N/A Lead (dissolved) NV NV NV Manganese 0.05 NV NV NV Manganese (dissolved) 0.05 NV NV NV Mercury E E E04 Mercury (dissolved) E E E04 Nickel NV NV NV Memo32T2 T4 T6 6/7/2018

146 Table 6 Page 16 of 16 IU I Data Screened Against DRAFT 2017 Part 201 Generic Cleanup Criteria and s Criteria Water Solubility MDEQ VI Tier 1 MDEQ VI Tier 2 MDEQ VI Tier 3A Nickel (dissolved) NV NV NV Selenium 0.05 NV NV NV Selenium (dissolved) 0.05 NV NV NV Silver 0.1 NV NV NV Silver (dissolved) 0.1 NV NV NV Thallium NV NV NV Thallium (dissolved) NV NV NV Tin NV NV NV Tin (dissolved) NV NV NV Vanadium NV NV NV Vanadium (dissolved) NV NV NV Zinc 5 NV NV NV Zinc (dissolved) 5 NV NV NV I I TMW07957 TMW07962 H50009 H /20/ /20/2001 PCBs Aroclor1016 (PCB1016) 3.10E E E03 Aroclor1221 (PCB1221) 3.10E E E03 Aroclor1232 (PCB1232) 3.10E E E03 Aroclor1242 (PCB1242) 3.10E E E03 Aroclor1248 (PCB1248) 3.10E E E03 Aroclor1254 (PCB1254) 3.10E E E03 Aroclor1260 (PCB1260) 3.10E E E03 Total PCBs E E E03 Wet Alkalinity, total (as CaCO3) Ammonia E E E+00 Bicarbonate (as CaCO3) Cyanide (total) E E E02 Fluoride N/A N/A N/A Formaldehyde E E E+01 ph, lab s.u Sulfide Total dissolved solids (TDS) 500 Total kjeldahl nitrogen (TKN) adef 0.01 U 0.48 adef a 1480 a FPARAM Conductivity, field umhos/cm Dissolved oxygen (DO), field Oxidation reduction potential (ORP) millivolts ph, field s.u Temperature, field Deg C Turbidity NTU a Footnotes: U Not detected at the associated reporting limit. J Estimated concentration. UJ Not detected; associated reporting limit is estimated. R Rejected b Exceedance of DRAFT 2017 Part 201 Generic Cleanup Criteria and s 9.06 b Exceedance of screening levels in the latest round of groundwater data for a given location Downgradient sampling location included in the groundwater evaluation discussion Not analyzed NV MDEQ VI screening deemed Not Volatile N/A Not analyzed in MDEQ VI screening Memo32T2 T4 T6 6/7/2018

147 Attachment A 2017 CA 750 Environmental Indicator Annual Monitoring Results GHD Memo32TPA

148 December 8, 2017 Reference No Mr. Nate Nemani Corrective Action Project Manager U.S. EPA, Region 5 Land and Chemicals Division 77 West Jackson Boulevard LU9J Chicago, IL Dear Mr. Nemani: Re: 2017 CA 750 Environmental Indicator Annual Monitoring Results EPA ID #MID RACER Nodular Facility Saginaw, Michigan This letter summarizes the CA 750 Environmental Indicators (EI) monitoring activities related to the Nodular Facility that is owned by Revitalizing Auto Communities Environmental Response (RACER) Properties, LLC, a wholly owned entity of RACER Trust in Saginaw, Michigan. The annual CA 750 EI monitoring was completed on May 17th, 2017 prior to the abandonment of the wells to support a proposed development. The revisions proposed in the 2016 CA 750 EI Annual Monitoring Results recommendations dated January 4, 2017 were approved via by U.S. EPA on May 5, 2017 and incorporated into the 2017 EI monitoring program. In addition, GHD (formerly CRA) submitted a memorandum that discussed ammonia in groundwater at the Site on April 6, 2015 for your review and it was subsequently forwarded to MDEQ for review on April 8, Results submitted since submittal of that letter have been modified to incorporate the evaluation of the toxic fraction of ammonia (unionized ammonia) consistent with the evaluation included in the memorandum. Figure 1 presents databoxes for all RACER EI locations, as well as additional monitoring well data collected in the area of the high ph and ammonia. The databoxes show all data up to and including the 2017 EI results. As indicated on Figure 1: /Surface Water/EI Wells (MW03945, MW04051, MW04250R, MW04257, and MW04757) Unionized ammonia was calculated for each monitoring well utilizing the ph and temperature of each individual monitoring well and averaged with the Saginaw River ph and temperature. The calculated unionized ammonia results were compared to the warmwater unionized ammonia acute toxicity criterion of (420 micrograms per litre [µg/l]), which was the criteria recommended in the mixing zone determination, dated January 12, The results were below applicable criteria and are summarized in Table 1. GHD Sheldon Road Suite 200 Plymouth Michigan USA T F W