Re: April 24 to July 7, 2017 Dust Monitoring and Site Work Observations, Lots 12 and 13, Beverly Hills, California

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1 October 12, 2017 Project No Via David Yelton Deputy Building Official Department of Community Development - City of Beverly Hills 455 North Rexford Drive Beverly Hills, CA Re: April 24 to July 7, 2017 Dust Monitoring and Site Work Observations, Lots 12 and 13, Beverly Hills, California Dear Mr. Yelton: Lindmark Engineering (LE) is pleased to submit this report which documents the observations and dust monitoring for the additional maintenance work performed at Lots 12 and 13, south of North Santa Monica Boulevard (NSMB) and between Alden Drive and Doheny Drive, Beverly Hills (site). The site is depicted on Figures 1 through 3, Appendix A. The site consists of two vacant lots 12 and 13 which comprise the five parcels ; ; and , including the island property adjacent to and just west of Doheny Drive. The site majority owner is the Beverly Hills Land Company (BHLC), which was responsible for trimming all existing hedges, shrubs and plants, and cutting weeds at the site and abutting City of Beverly Hills (City) right of way. The BHLC completed maintenance work at the site on December 14, 2016, described by the City as Phase I, and LE prepared a report summarizing the observations and monitoring results performed, dated January 18, 2017 (Phase I report). Additional maintenance work was performed by the BHLC in February 2017, arsenic sampling was performed only on February 7, and LE conducted daily weather monitoring, and dust monitoring during landscaping maintenance activities. The additional observations and monitoring results were presented in a report, dated March 6, Additional maintenance activities were monitored by LE from March 23 through April 3, 2017, and presented in our report, dated April 28, The scope of work for the Phase I and additional maintenance work included fence repair and replacement, which had the potential to generate dust during the repair activities. No soil removal was conducted during the activities. Previous assessments at the site have found arsenic concentrations in soil above normal background for California soils with a maximum concentration of 996 milligrams per kilogram (mg/kg). Given the known site conditions and potential for dust generation, LE conducted dust monitoring at the site, on behalf of the City, including analytical testing for total arsenic in air. LE s Phase I report found that during site maintenance activities arsenic in dust was not detected in any project samples. The report also found the daily time-weighted average of total dust concentrations recorded during site work did not exceed a difference of 50 micrograms per cubic meter (μg/m 3 ) between upwind and downwind monitoring stations. This report summarizes the additional maintenance work performed on Lots 12 and 13, and on the island, by the BHLC between April 24 and July 7, The scope of the additional maintenance work was to: trim the grass and weeds within the interior of Lots 12 and 13, within 2 feet of NSMB at Lot Townsgate Road, Suite 330, Westlake Village, California T F

2 David Yelton October 12, 2017 and 13, trim the weeds along the fence line against Civic Center Drive at Lot 13, and trim the grass and weeds around the outer perimeter of the island. Maintenance work also including trimming the shooters and branches around the stumps in advance of stump removal activities. The additional maintenance involved similar work activities as performed during the Phase I maintenance. Arsenic sampling, dust monitoring, and weather monitoring was conducted daily during landscaping maintenance activities, and arsenic samples were analyzed as described in this report. SITE WORK OBSERVATIONS LE observed the site maintenance activities by the BHLC between April 24 and July 7, 2017 (see Table 1 for specific work dates). Site work was generally performed along the fence line adjacent to NSMB, along the fence line adjacent to Civic Center Drive, and on the island. A list of work dates and the approximate location of work performed each day is summarized on Table 1, Appendix B. A detailed description of work performed each day is summarized on the daily field reports, included as Appendix C. Landscaping maintenance work was performed by BHLC s contractor Westchester Landscape. Site work generally consisted of clipping, cutting, and sawing bushes, branches, and shrubs. Workers also performed weed whacking and hand clipping of weeds and grass. DUST MONITORING AND ARSENIC SAMPLING ACTIVITIES The community action level for total dust concentrations, based on South Coast Air Quality Management District (AQMD) regulations, is a difference of 50 μg/m 3 between upwind and downwind monitoring stations. Each day where landscaping maintenance was performed, monitoring stations for total dust in air were generally positioned upwind and downwind of the work area, located along the northern or southern fence line of Lots 12 and 13 and the island using MIE Model 1000 personal dust monitors. The monitoring station located on the north fence line was generally upwind of the work area when wind directions were coming from the north, west, or southwest, and the monitoring station located on the south fence line was generally upwind of the work area when wind directions were coming from the south, southeast, and east. LE monitored the on-site weather station and the dust monitoring instruments approximately every 15 minutes during site work. The stations were generally adjusted to follow the site workers and current wind conditions. Note, only one dust monitor was used for both upwind and downwind locations on July 3, 6, and 7, The field monitoring logs are included as Appendix D, which indicate total dust concentrations at each monitoring station, wind speed and direction, and site work observations. Each day the concentration of arsenic in dust was sampled during work hours using air sampling pumps attached to 37 mm MCE filter cartridges. With the exception of samples collected on June 2 and 14, the cartridges were submitted to a State-certified laboratory for analysis using NIOSH Method 7300M. Arsenic was sampled at the same locations where upwind and downwind monitoring stations were positioned. Beginning on May 12, 2017, arsenic samples were only collected at the downwind monitoring station. The laboratory analytical results for arsenic in air are included as Appendix E. The sample chain of custody forms are also included and document the sample identification number, sample location, sampling time and date. SUMMARY OF DUST MONITORING FINDINGS The daily time-weighted average of total dust concentrations recorded during site work did not exceed a difference of 50 μg/m 3 between upwind and downwind monitoring stations on any of the work days. April through July Maintenance Report Page 2 Lindmark Engineering

3 David Yelton October 12, 2017 Refer to the field monitoring logs, included in Appendix D, for each work day to determine which monitoring station was representative of the downwind sampling position. Small amounts of dust were observed on occasion. Note, no field monitoring log is available for April 26, 2017, however the daily field report did not indicate the activities produced excessive dust. On May 24 and 25, 2017, while collecting leaf cuttings in the eastern portion of Lot 12, LE observed a small amount of dust above the cuttings as they were loaded into the stake bed truck. LE recommended to cover the stake bed with a tarp, load the cuttings slower, and toward the back of the stake bed. LE observed some dust while workers removed weeds with powered tools at Lot 13 on June 6, LE immediately stopped work and workers misted the area with water. Similarly on June 9, LE observed some dust during weed whacking, however the dust may have been plant-derived and not soil dust, furthermore the dust readings did not indicate an increase in dust from upwind to downwind monitoring stations. After applying more water to the area, the visible dust was reduced to a very minimal amount. Observations of visible dust are documents on the daily field reports, included as Appendix C. Note, no daily field report is available for June 8, Samples of arsenic in air collected on these dates did not detect arsenic at or above their respective reporting limits. SUMMARY OF ARSENIC SAMPLING FINDINGS Based on the volume of air sampled during each work day, arsenic in air was not detected at or above the reporting limits ranging between µg/m 3 (equivalent to mg/m 3 ) and 1.5 µg/m 3 (equivalent to mg/m 3 ). The reporting limit is the lowest concentration that can be reported by the laboratory given the operational time of the pumps. CONCLUSIONS Based on the available data, concentrations did not exceed the site action level at the fence line. Furthermore, the time-weighted average of total dust concentrations between upwind and downwind monitoring stations was below the community action level of 50 μg/m 3. Based on LE s observations of site work activities, and our monitoring and analytical data, LE concludes the activities did not pose an environmental concern to the community during this project, however a water truck should be available at all times for dust suppression, since activities not involving power tools may still generate dust if the soil is sufficiently dry (eg. vehicle traffic, digging, and raking). RECOMMENDATIONS LE recommends to continue collecting downwind air samples for total arsenic in dust, however we recommend only analyzing the sample in the event dust is observed in the work area. Please call me at if you have any questions. Best regards, David W. Smith, PG Senior Project Geologist April through July Maintenance Report Page 3 Lindmark Engineering

4 David Yelton October 12, 2017 Ulf Lindmark, PE, BCEE President UML:dws Enclosures: Appendix A Figures 1 through 3 Appendix B Table 1 Appendix C Daily Field Reports Appendix D Field Monitoring Logs Appendix E Laboratory Analytical Results April through July Maintenance Report Page 4 Lindmark Engineering

5 APPENDIX A Figures 1 through 3 April through July Maintenance Report Lindmark Engineering

6 PROJECT COMPLETION REPORT LOTS 12 AND 13 1/17

7 HILLCREST DR. ARDEN DR. ALLEY WAY PLANTER PLANTER PLANTER ALLEY WAY ALTA DR. LAWN LAWN LAWN LOT 13 LOT 13 CIVIC CENTER DR. CIVIC CENTER DR. PROJECT COMPLETION REPORT LOTS 12 AND 13 1/17 2

8 ALLEY WAY ALLEY WAY CARMELITA DR. SIERRA DR. ALTA DR. PLANTER PLANTER LAWN LAWN LOT 13 LOT 13 CIVIC CENTER DR. PROJECT COMPLETION REPORT LOTS 12 AND 13 1/17 3

9 APPENDIX B Table 1 April through July Maintenance Report Lindmark Engineering

10 Table 1 Location of Daily Work Areas Lots 12 and 13, Beverly Hills, Ca Lot 12 Lot 13 Work Date Alpine Dr. Foothill Dr. Elm Dr. Maple Dr. Palm Dr. Palm Dr. Hillcrest Dr. Arden Dr. Alta Dr. Sierra Dr. Carmelita Dr. 4/24/2017 4/25/2017 4/26/2017 5/2/2017 5/3/2017 5/4/2017 5/8/2017 5/9/2017 5/10/2017 5/11/2017 5/12/2017 5/15/2017 5/16/2017 5/17/2017 5/18/2017 5/19/2017 5/22/2017 5/23/2017 5/24/2017 5/25/2017 5/26/2017 5/30/2017 5/31/2017 6/1/2017 6/2/2017 6/5/2017 6/6/2017 6/7/2017 6/8/2017 6/9/2017 6/12/2017 ` 6/13/2017 6/14/2017 6/15/2017 6/19/2017 6/26/2017 6/27/2017 6/28/2017 6/29/2017 6/30/2017 7/3/2017 7/6/2017 7/7/2017 Notes: = Site work predeminately located along North Santa Monica Boulevard = Site work predeminately located along Civic Center Drive = Site work located throughout the lot = Site work located throughout the island No site work where not color-coded Island

11 APPENDIX C Daily Field Reports April through July Maintenance Report Lindmark Engineering

14 Field Report Sheet _, of L Townsgate Road, Suite 330, Westlake Village, California T F Proj. # :{tj/('-156 Proj. Name CBIt hdsi~am f} MrMtrt. Date 1/:1,//" Proj. Addr. His Ic'l a'll 13 Arrival Time Departure Time Agency representatives on-site Equipmenton1te(~ ~~~~~~~~O~O~~~~~~~t~(~~~~~_S~~~/~~~~~~~~~~~~~~,~ Equipment on-site (s~c~kfr;rtors) r4h~ SJI6V; ~, hajj. htlf~ SUMMARY OF WORK PERFORMED ul,,,, Action Required

54 APPENDIX D Field Monitoring Logs April through July Maintenance Report Lindmark Engineering

97 APPENDIX E Laboratory Analytical Results April through July Maintenance Report Lindmark Engineering

98 LA Testing 5431 Industrial Drive, Huntington Beach, CA Order ID: Attn: Ulf Lindmark Lindmark Engineering 2625 Townsgate Road Suite 330 Westlake Village, CA Customer ID: Customer PO: Date Received: LA Testing Order: LNDM /25/ Project: City of Beverly Hills Lots 12 & 13 and Island Phone: Fax: Report Date: 04/26/17 Date Analyzed: 04/25/17 Metals in MCE cassette by ICP - NIOSH 7300M Lab ID Client ID Vol. (L) Analyte µg/filter µg/m 3 mg/m 3 Reporting Limit (µg/filter) AS N 1155 Arsenic <1.0 <0.87 < AS S 1155 Arsenic <1.0 <0.87 < Sample received in acceptable condition unless otherwise noted. This report may not be reproduced except in full, without written approval by LA Testing. This report relates only to those items tested. Unless otherwise noted, the results in this report have not been blank corrected. Quality Control Data associated with this sample set is within acceptable limits, unless otherwise noted. JN Analyst Michael Chapman- Laboratory Manager Or other approved signatory AIHA- LAP, LLC Accredited - Laboratory ID # Page 1 of 1

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100 LA Testing 5431 Industrial Drive, Huntington Beach, CA Order ID: Attn: Ulf Lindmark Lindmark Engineering 2625 Townsgate Road Suite 330 Westlake Village, CA Customer ID: Customer PO: Date Received: LA Testing Order: LNDM /27/ Project: CBH Lots 12 and 13 Maintenance Phone: Fax: Report Date: 04/28/17 Date Analyzed: 04/27/17 Metals in MCE cassette by ICP - NIOSH 7300M Lab ID Client ID Vol. (L) Analyte µg/filter µg/m 3 mg/m 3 Reporting Limit (µg/filter) AS N 1723 Arsenic <1.0 <0.58 < AS S 1723 Arsenic <1.0 <0.58 < Sample received in acceptable condition unless otherwise noted. This report may not be reproduced except in full, without written approval by LA Testing. This report relates only to those items tested. Unless otherwise noted, the results in this report have not been blank corrected. Quality Control Data associated with this sample set is within acceptable limits, unless otherwise noted. JN Analyst Michael Chapman- Laboratory Manager Or other approved signatory AIHA- LAP, LLC Accredited - Laboratory ID # Page 1 of 1

101 LA Testing 5431 Industrial Drive, Huntington Beach, CA Order ID: Attn: Ulf Lindmark Lindmark Engineering 2625 Townsgate Road Suite 330 Westlake Village, CA Customer ID: Customer PO: Date Received: LA Testing Order: LNDM /27/ Project: CBH Lots 12 and 13 Maintenance Phone: Fax: Report Date: Revise Date: /28/17 05/02/17 Date Analyzed: 04/27/17 Metals in MCE cassette by ICP - NIOSH 7300M Lab ID Client ID Vol. (L) Analyte µg/filter µg/m 3 mg/m 3 Reporting Limit (µg/filter) AS N 1073 Arsenic <1.0 <0.93 < AS S 1723 Arsenic <1.0 <0.58 < Sample received in acceptable condition unless otherwise noted. This report may not be reproduced except in full, without written approval by LA Testing. This report relates only to those items tested. Unless otherwise noted, the results in this report have not been blank corrected. Quality Control Data associated with this sample set is within acceptable limits, unless otherwise noted. Note: #1 Revised Volume to 1073 L by JN. JN Analyst Michael Chapman- Laboratory Manager Or other approved signatory AIHA- LAP, LLC Accredited - Laboratory ID # Page 1 of 1

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103 LA Testing 5431 Industrial Drive, Huntington Beach, CA Order ID: Attn: Ulf Lindmark Lindmark Engineering 2625 Townsgate Road Suite 330 Westlake Village, CA Customer ID: Customer PO: Date Received: LA Testing Order: LNDM /27/ Project: CBH Lots 12 and 13 Maintennance Phone: Fax: Report Date: 04/28/17 Date Analyzed: 04/27/17 Metals in MCE cassette by ICP - NIOSH 7300M Lab ID Client ID Vol. (L) Analyte µg/filter µg/m 3 mg/m 3 Reporting Limit (µg/filter) AS N 1155 Arsenic <1.0 <0.87 < AS S 1155 Arsenic <1.0 <0.87 < Sample received in acceptable condition unless otherwise noted. This report may not be reproduced except in full, without written approval by LA Testing. This report relates only to those items tested. Unless otherwise noted, the results in this report have not been blank corrected. Quality Control Data associated with this sample set is within acceptable limits, unless otherwise noted. JN Analyst Michael Chapman- Laboratory Manager Or other approved signatory AIHA- LAP, LLC Accredited - Laboratory ID # Page 1 of 1

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105 LA Testing 5431 Industrial Drive, Huntington Beach, CA Order ID: Attn: Ulf Lindmark Lindmark Engineering 2625 Townsgate Road Suite 330 Westlake Village, CA Customer ID: Customer PO: Date Received: LA Testing Order: LNDM /03/ Project: CBH Lots 12 and 13 Maintenance Phone: Fax: Report Date: 05/04/17 Date Analyzed: 05/03/17 Metals in MCE cassette by ICP - NIOSH 7300M Lab ID Client ID Vol. (L) Analyte µg/filter µg/m 3 mg/m 3 Reporting Limit (µg/filter) AS N 1073 Arsenic <1.0 <0.93 < AA S 1073 Arsenic <1.0 <0.93 < Sample received in acceptable condition unless otherwise noted. This report may not be reproduced except in full, without written approval by LA Testing. This report relates only to those items tested. Unless otherwise noted, the results in this report have not been blank corrected. Quality Control Data associated with this sample set is within acceptable limits, unless otherwise noted. JN Analyst Michael Chapman- Laboratory Manager Or other approved signatory AIHA- LAP, LLC Accredited - Laboratory ID # Page 1 of 1

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107 LA Testing 5431 Industrial Drive, Huntington Beach, CA Order ID: Attn: Ulf Lindmark Lindmark Engineering 2625 Townsgate Road Suite 330 Westlake Village, CA Customer ID: Customer PO: Date Received: LA Testing Order: LNDM /04/ Project: CBH Lots 12 and 13 Maintenance Phone: Fax: Report Date: 05/05/17 Date Analyzed: 05/05/17 Metals in MCE cassette by ICP - NIOSH 7300M Lab ID Client ID Vol. (L) Analyte µg/filter µg/m 3 mg/m 3 Reporting Limit (µg/filter) AS N 1073 Arsenic <1.0 <0.93 < AS S 1073 Arsenic <1.0 <0.93 < Sample received in acceptable condition unless otherwise noted. This report may not be reproduced except in full, without written approval by LA Testing. This report relates only to those items tested. Unless otherwise noted, the results in this report have not been blank corrected. Quality Control Data associated with this sample set is within acceptable limits, unless otherwise noted. JN Analyst Michael Chapman- Laboratory Manager Or other approved signatory AIHA- LAP, LLC Accredited - Laboratory ID # Page 1 of 1

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109 LA Testing 5431 Industrial Drive, Huntington Beach, CA Order ID: Attn: Ulf Lindmark Lindmark Engineering 2625 Townsgate Road Suite 330 Westlake Village, CA Customer ID: Customer PO: Date Received: LA Testing Order: LNDM /05/ Project: CBH Lots 12 and 13 Maintenance Phone: Fax: Report Date: 05/08/17 Date Analyzed: 05/05/17 Metals in MCE cassette by ICP - NIOSH 7300M Lab ID Client ID Vol. (L) Analyte µg/filter µg/m 3 mg/m 3 Reporting Limit (µg/filter) AS N 1073 Arsenic <1.0 <0.93 < AS S 1073 Arsenic <1.0 <0.93 < Sample received in acceptable condition unless otherwise noted. This report may not be reproduced except in full, without written approval by LA Testing. This report relates only to those items tested. Unless otherwise noted, the results in this report have not been blank corrected. Quality Control Data associated with this sample set is within acceptable limits, unless otherwise noted. JN Analyst Michael Chapman- Laboratory Manager Or other approved signatory AIHA- LAP, LLC Accredited - Laboratory ID # Page 1 of 1

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111 LA Testing 5431 Industrial Drive, Huntington Beach, CA Order ID: Attn: Ulf Lindmark Lindmark Engineering 2625 Townsgate Road Suite 330 Westlake Village, CA Customer ID: Customer PO: Date Received: LA Testing Order: LNDM /10/ Project: CBH Lots 12 and 13 Maintenance Phone: Fax: Report Date: 05/11/17 Date Analyzed: 05/11/17 Metals in MCE cassette by ICP - NIOSH 7300M Lab ID Client ID Vol. (L) Analyte µg/filter µg/m 3 mg/m 3 Reporting Limit (µg/filter) AS N 1031 Arsenic <1.0 <0.97 < AS S 1031 Arsenic <1.0 <0.97 < Sample received in acceptable condition unless otherwise noted. This report may not be reproduced except in full, without written approval by LA Testing. This report relates only to those items tested. Unless otherwise noted, the results in this report have not been blank corrected. Quality Control Data associated with this sample set is within acceptable limits, unless otherwise noted. JN Analyst Michael Chapman- Laboratory Manager Or other approved signatory AIHA- LAP, LLC Accredited - Laboratory ID # Page 1 of 1

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113 LA Testing 5431 Industrial Drive, Huntington Beach, CA Order ID: Attn: Ulf Lindmark Lindmark Engineering 2625 Townsgate Road Suite 330 Westlake Village, CA Customer ID: Customer PO: Date Received: LA Testing Order: LNDM /10/ Project: CBH Lots 12 and 13 Maintenance Phone: Fax: Report Date: 05/12/17 Date Analyzed: 05/11/17 Metals in MCE cassette by ICP - NIOSH 7300M Lab ID Client ID Vol. (L) Analyte µg/filter µg/m 3 mg/m 3 Reporting Limit (µg/filter) AS N 990 Arsenic <1.0 <1.0 < AS S 990 Arsenic <1.0 <1.0 < Sample received in acceptable condition unless otherwise noted. This report may not be reproduced except in full, without written approval by LA Testing. This report relates only to those items tested. Unless otherwise noted, the results in this report have not been blank corrected. Quality Control Data associated with this sample set is within acceptable limits, unless otherwise noted. JN Analyst Michael Chapman- Laboratory Manager Or other approved signatory AIHA- LAP, LLC Accredited - Laboratory ID # Page 1 of 1

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115 LA Testing 5431 Industrial Drive, Huntington Beach, CA Order ID: Attn: Ulf Lindmark Lindmark Engineering 2625 Townsgate Road Suite 330 Westlake Village, CA Customer ID: Customer PO: Date Received: LA Testing Order: LNDM /12/ Project: CBH Lots 12 and 13 Maintenance Phone: Fax: Report Date: 05/19/17 Date Analyzed: 05/16/17 Metals in MCE cassette by ICP - NIOSH 7300M Lab ID Client ID Vol. (L) Analyte µg/filter µg/m 3 mg/m 3 Reporting Limit (µg/filter) AS S 831 Arsenic <1.0 <1.2 < Sample received in acceptable condition unless otherwise noted. This report may not be reproduced except in full, without written approval by LA Testing. This report relates only to those items tested. Unless otherwise noted, the results in this report have not been blank corrected. Quality Control Data associated with this sample set is within acceptable limits, unless otherwise noted. JN Analyst Michael Chapman- Laboratory Manager Or other approved signatory AIHA- LAP, LLC Accredited - Laboratory ID # Page 1 of 1

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117 LA Testing 5431 Industrial Drive, Huntington Beach, CA Order ID: Attn: Ulf Lindmark Lindmark Engineering 2625 Townsgate Road Suite 330 Westlake Village, CA Customer ID: Customer PO: Date Received: LA Testing Order: LNDM /12/ Project: CBH Lots 12 and 13 Tree Trimming Phone: Fax: Report Date: 05/19/17 Date Analyzed: 05/16/17 Metals in MCE cassette by ICP - NIOSH 7300M Lab ID Client ID Vol. (L) Analyte µg/filter µg/m 3 mg/m 3 Reporting Limit (µg/filter) AS CBH 825 Arsenic <1.0 <1.2 < AS BHLC 1018 Arsenic <1.0 <0.98 < Sample received in acceptable condition unless otherwise noted. This report may not be reproduced except in full, without written approval by LA Testing. This report relates only to those items tested. Unless otherwise noted, the results in this report have not been blank corrected. Quality Control Data associated with this sample set is within acceptable limits, unless otherwise noted. JN Analyst Michael Chapman- Laboratory Manager Or other approved signatory AIHA- LAP, LLC Accredited - Laboratory ID # Page 1 of 1

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119 LA Testing 5431 Industrial Drive, Huntington Beach, CA Order ID: Attn: Ulf Lindmark Lindmark Engineering 2625 Townsgate Road Suite 330 Westlake Village, CA Customer ID: Customer PO: Date Received: LA Testing Order: LNDM /15/ Project: CBH Lots 12 and 13 Maintenance Phone: Fax: Report Date: 05/22/17 Date Analyzed: 05/16/17 Metals in MCE cassette by ICP - NIOSH 7300M Lab ID Client ID Vol. (L) Analyte µg/filter µg/m 3 mg/m 3 Reporting Limit (µg/filter) AS BHLC 1114 Arsenic <1.0 <0.90 < Sample received in acceptable condition unless otherwise noted. This report may not be reproduced except in full, without written approval by LA Testing. This report relates only to those items tested. Unless otherwise noted, the results in this report have not been blank corrected. Quality Control Data associated with this sample set is within acceptable limits, unless otherwise noted. JN Analyst Michael Chapman- Laboratory Manager Or other approved signatory AIHA- LAP, LLC Accredited - Laboratory ID # Page 1 of 1

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121 LA Testing 5431 Industrial Drive, Huntington Beach, CA Order ID: Attn: Ulf Lindmark Lindmark Engineering 2625 Townsgate Road Suite 330 Westlake Village, CA Customer ID: Customer PO: Date Received: LA Testing Order: LNDM /17/ Project: CBH Lots 12 and 13 Maintenance Phone: Fax: Report Date: 05/23/17 Date Analyzed: 05/19/17 Metals in MCE cassette by ICP - NIOSH 7300M Lab ID Client ID Vol. (L) Analyte µg/filter µg/m 3 mg/m 3 Reporting Limit (µg/filter) AS BHLC 990 Arsenic <1.0 <1.0 < Sample received in acceptable condition unless otherwise noted. This report may not be reproduced except in full, without written approval by LA Testing. This report relates only to those items tested. Unless otherwise noted, the results in this report have not been blank corrected. Quality Control Data associated with this sample set is within acceptable limits, unless otherwise noted. JN Analyst Michael Chapman- Laboratory Manager Or other approved signatory AIHA- LAP, LLC Accredited - Laboratory ID # Page 1 of 1

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123 LA Testing 5431 Industrial Drive, Huntington Beach, CA Order ID: Attn: Ulf Lindmark Lindmark Engineering 2625 Townsgate Road Suite 330 Westlake Village, CA Customer ID: Customer PO: Date Received: LA Testing Order: LNDM /17/ Project: CBH Lots 12 and 13 Maintenance Phone: Fax: Report Date: 05/23/17 Date Analyzed: 05/19/17 Metals in MCE cassette by ICP - NIOSH 7300M Lab ID Client ID Vol. (L) Analyte µg/filter µg/m 3 mg/m 3 Reporting Limit (µg/filter) AS BHLC 1073 Arsenic <1.0 <0.93 < Sample received in acceptable condition unless otherwise noted. This report may not be reproduced except in full, without written approval by LA Testing. This report relates only to those items tested. Unless otherwise noted, the results in this report have not been blank corrected. Quality Control Data associated with this sample set is within acceptable limits, unless otherwise noted. JN Analyst Michael Chapman- Laboratory Manager Or other approved signatory AIHA- LAP, LLC Accredited - Laboratory ID # Page 1 of 1

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125 LA Testing 5431 Industrial Drive, Huntington Beach, CA Order ID: Attn: Ulf Lindmark Lindmark Engineering 2625 Townsgate Road Suite 330 Westlake Village, CA Customer ID: Customer PO: Date Received: LA Testing Order: LNDM /18/ Project: CBH Lots 12 and 13 Maintenance Phone: Fax: Report Date: 05/24/17 Date Analyzed: 05/19/17 Metals in MCE cassette by ICP - NIOSH 7300M Lab ID Client ID Vol. (L) Analyte µg/filter µg/m 3 mg/m 3 Reporting Limit (µg/filter) AS BHLC 1073 Arsenic <1.0 <0.93 < Sample received in acceptable condition unless otherwise noted. This report may not be reproduced except in full, without written approval by LA Testing. This report relates only to those items tested. Unless otherwise noted, the results in this report have not been blank corrected. Quality Control Data associated with this sample set is within acceptable limits, unless otherwise noted. JN Analyst Michael Chapman- Laboratory Manager Or other approved signatory AIHA- LAP, LLC Accredited - Laboratory ID # Page 1 of 1

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127 LA Testing 5431 Industrial Drive, Huntington Beach, CA Order ID: Attn: Ulf Lindmark Lindmark Engineering 2625 Townsgate Road Suite 330 Westlake Village, CA Customer ID: Customer PO: Date Received: LA Testing Order: LNDM /22/ Project: CBH Lots 12 and 13 Maintenance Phone: Fax: Report Date: 05/30/17 Date Analyzed: 05/25/17 Metals in MCE cassette by ICP - NIOSH 7300M Lab ID Client ID Vol. (L) Analyte µg/filter µg/m 3 mg/m 3 Reporting Limit (µg/filter) AS BHLC N/A Arsenic <1.0 NA NA 1.0 Sample received in acceptable condition unless otherwise noted. This report may not be reproduced except in full, without written approval by LA Testing. This report relates only to those items tested. Unless otherwise noted, the results in this report have not been blank corrected. Quality Control Data associated with this sample set is within acceptable limits, unless otherwise noted. JN Analyst Michael Chapman- Laboratory Manager Or other approved signatory AIHA- LAP, LLC Accredited - Laboratory ID # Page 1 of 1

128 LA Testing 5431 Industrial Drive, Huntington Beach, CA Order ID: Attn: Ulf Lindmark Lindmark Engineering 2625 Townsgate Road Suite 330 Westlake Village, CA Customer ID: Customer PO: Date Received: LA Testing Order: LNDM /22/ Project: CBH Lots 12 and 13 Maintenance Phone: Fax: Report Date: Revised : /30/17 06/05/17 Date Analyzed: 05/25/17 Metals in MCE cassette by ICP - NIOSH 7300M Lab ID Client ID Vol. (L) Analyte µg/filter µg/m 3 mg/m 3 Reporting Limit (µg/filter) AS BHLC 1073 Arsenic <1.0 <0.93 < Sample received in acceptable condition unless otherwise noted. This report may not be reproduced except in full, without written approval by LA Testing. This report relates only to those items tested. Unless otherwise noted, the results in this report have not been blank corrected. Quality Control Data associated with this sample set is within acceptable limits, unless otherwise noted. Note: Sample volume added on 6/15/17 by JN. JN Analyst Michael Chapman- Laboratory Manager Or other approved signatory AIHA- LAP, LLC Accredited - Laboratory ID # Page 1 of 1

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130 LA Testing 5431 Industrial Drive, Huntington Beach, CA Order ID: Attn: Ulf Lindmark Lindmark Engineering 2625 Townsgate Road Suite 330 Westlake Village, CA Customer ID: Customer PO: Date Received: LA Testing Order: LNDM /22/ Project: CBH Lots 12 and 13 Maintenance Phone: Fax: Report Date: 05/30/17 Date Analyzed: 05/30/17 Metals in MCE cassette by ICP - NIOSH 7300M Lab ID Client ID Vol. (L) Analyte µg/filter µg/m 3 mg/m 3 Reporting Limit (µg/filter) AS BHLC Arsenic <1.0 <0.89 < Sample received in acceptable condition unless otherwise noted. This report may not be reproduced except in full, without written approval by LA Testing. This report relates only to those items tested. Unless otherwise noted, the results in this report have not been blank corrected. Quality Control Data associated with this sample set is within acceptable limits, unless otherwise noted. JN Analyst Michael Chapman- Laboratory Manager Or other approved signatory AIHA- LAP, LLC Accredited - Laboratory ID # Page 1 of 1

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132 LA Testing 5431 Industrial Drive, Huntington Beach, CA Order ID: Attn: Ulf Lindmark Lindmark Engineering 2625 Townsgate Road Suite 330 Westlake Village, CA Customer ID: Customer PO: Date Received: LA Testing Order: LNDM42 05/23/ Project: City of Beverly Hills Lots 12 & 13 and Island Phone: Fax: Report Date: 05/30/17 Date Analyzed: 05/25/17 Metals in MCE cassette by ICP - NIOSH 7300M Lab ID Client ID Vol. (L) Analyte µg/filter µg/m 3 mg/m 3 Reporting Limit (µg/filter) AS BHLC 1144 Arsenic <1.0 <0.87 < Sample received in acceptable condition unless otherwise noted. This report may not be reproduced except in full, without written approval by LA Testing. This report relates only to those items tested. Unless otherwise noted, the results in this report have not been blank corrected. Quality Control Data associated with this sample set is within acceptable limits, unless otherwise noted. JN Analyst Michael Chapman- Laboratory Manager Or other approved signatory AIHA- LAP, LLC Accredited - Laboratory ID # Page 1 of 1

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134 LA Testing 5431 Industrial Drive, Huntington Beach, CA Order ID: Attn: Ulf Lindmark Lindmark Engineering 2625 Townsgate Road Suite 330 Westlake Village, CA Customer ID: Customer PO: Date Received: LA Testing Order: LNDM42 05/24/ Project: City of Beverly Hills Lots 12 & 13 and Island Phone: Fax: Report Date: 06/01/17 Date Analyzed: 05/30/17 Metals in MCE cassette by ICP - NIOSH 7300M Lab ID Client ID Vol. (L) Analyte µg/filter µg/m 3 mg/m 3 Reporting Limit (µg/filter) AS BHLC Arsenic <1.0 <0.89 < Sample received in acceptable condition unless otherwise noted. This report may not be reproduced except in full, without written approval by LA Testing. This report relates only to those items tested. Unless otherwise noted, the results in this report have not been blank corrected. Quality Control Data associated with this sample set is within acceptable limits, unless otherwise noted. JN Analyst Michael Chapman- Laboratory Manager Or other approved signatory AIHA- LAP, LLC Accredited - Laboratory ID # Page 1 of 1

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136 LA Testing 5431 Industrial Drive, Huntington Beach, CA Order ID: Attn: Ulf Lindmark Lindmark Engineering 2625 Townsgate Road Suite 330 Westlake Village, CA Customer ID: Customer PO: Date Received: LA Testing Order: LNDM42 05/25/ Project: City of Beverly Hills Lots 12 & 13 and Island Phone: Fax: Report Date: 06/01/17 Date Analyzed: 05/30/17 Metals in MCE cassette by ICP - NIOSH 7300M Lab ID Client ID Vol. (L) Analyte µg/filter µg/m 3 mg/m 3 Reporting Limit (µg/filter) AS BHLC Arsenic <1.0 <0.84 < Sample received in acceptable condition unless otherwise noted. This report may not be reproduced except in full, without written approval by LA Testing. This report relates only to those items tested. Unless otherwise noted, the results in this report have not been blank corrected. Quality Control Data associated with this sample set is within acceptable limits, unless otherwise noted. JN Analyst Michael Chapman- Laboratory Manager Or other approved signatory AIHA- LAP, LLC Accredited - Laboratory ID # Page 1 of 1

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138 LA Testing 5431 Industrial Drive, Huntington Beach, CA Order ID: Attn: Ulf Lindmark Lindmark Engineering 2625 Townsgate Road Suite 330 Westlake Village, CA Customer ID: Customer PO: Date Received: LA Testing Order: LNDM42 05/26/ Project: City of Beverly Hills Lots 12 & 13 and Island Phone: Fax: Report Date: 06/05/17 Date Analyzed: 05/31/17 Metals in MCE cassette by ICP - NIOSH 7300M Lab ID Client ID Vol. (L) Analyte µg/filter µg/m 3 mg/m 3 Reporting Limit (µg/filter) AS BHLC Arsenic <1.0 <0.85 < Sample received in acceptable condition unless otherwise noted. This report may not be reproduced except in full, without written approval by LA Testing. This report relates only to those items tested. Unless otherwise noted, the results in this report have not been blank corrected. Quality Control Data associated with this sample set is within acceptable limits, unless otherwise noted. JN Analyst Michael Chapman- Laboratory Manager Or other approved signatory AIHA- LAP, LLC Accredited - Laboratory ID # Page 1 of 1

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140 LA Testing 5431 Industrial Drive, Huntington Beach, CA Order ID: Attn: Ulf Lindmark Lindmark Engineering 2625 Townsgate Road Suite 330 Westlake Village, CA Customer ID: Customer PO: Date Received: LA Testing Order: LNDM42 05/30/ Project: City of Beverly Hills Lots 12 & 13 and Island Phone: Fax: Report Date: 06/06/17 Date Analyzed: 05/31/17 Metals in MCE cassette by ICP - NIOSH 7300M Lab ID Client ID Vol. (L) Analyte µg/filter µg/m 3 mg/m 3 Reporting Limit (µg/filter) AS BHLC Arsenic <1.0 <0.85 < Sample received in acceptable condition unless otherwise noted. This report may not be reproduced except in full, without written approval by LA Testing. This report relates only to those items tested. Unless otherwise noted, the results in this report have not been blank corrected. Quality Control Data associated with this sample set is within acceptable limits, unless otherwise noted. JN Analyst Michael Chapman- Laboratory Manager Or other approved signatory AIHA- LAP, LLC Accredited - Laboratory ID # Page 1 of 1

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142 LA Testing 5431 Industrial Drive, Huntington Beach, CA Order ID: Attn: Ulf Lindmark Lindmark Engineering 2625 Townsgate Road Suite 330 Westlake Village, CA Customer ID: Customer PO: Date Received: LA Testing Order: LNDM /31/ Project: CBH Lots 12 & 13 Phone: Fax: Report Date: 06/06/17 Date Analyzed: 05/31/17 Metals in MCE cassette by ICP - NIOSH 7300M Lab ID Client ID Vol. (L) Analyte µg/filter µg/m 3 mg/m 3 Reporting Limit (µg/filter) AS S Arsenic <1.0 <1.1 < Sample received in acceptable condition unless otherwise noted. This report may not be reproduced except in full, without written approval by LA Testing. This report relates only to those items tested. Unless otherwise noted, the results in this report have not been blank corrected. Quality Control Data associated with this sample set is within acceptable limits, unless otherwise noted. JN Analyst Michael Chapman- Laboratory Manager Or other approved signatory AIHA- LAP, LLC Accredited - Laboratory ID # Page 1 of 1

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144 LA Testing 5431 Industrial Drive, Huntington Beach, CA Order ID: Attn: Ulf Lindmark Lindmark Engineering 2625 Townsgate Road Suite 330 Westlake Village, CA Customer ID: Customer PO: Date Received: LA Testing Order: LNDM42 06/01/ Project: CBH Lots 12 & 13 Phone: Fax: Report Date: 06/08/17 Date Analyzed: 06/06/17 Metals in MCE cassette by ICP - NIOSH 7300M Lab ID Client ID Vol. (L) Analyte µg/filter µg/m 3 mg/m 3 Reporting Limit (µg/filter) AS S Arsenic <1.0 <0.97 < Sample received in acceptable condition unless otherwise noted. This report may not be reproduced except in full, without written approval by LA Testing. This report relates only to those items tested. Unless otherwise noted, the results in this report have not been blank corrected. Quality Control Data associated with this sample set is within acceptable limits, unless otherwise noted. JN Analyst Michael Chapman- Laboratory Manager Or other approved signatory AIHA- LAP, LLC Accredited - Laboratory ID # Page 1 of 1

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146 LA Testing 5431 Industrial Drive, Huntington Beach, CA Order ID: Attn: Ulf Lindmark Lindmark Engineering 2625 Townsgate Road Suite 330 Westlake Village, CA Customer ID: Customer PO: Date Received: LA Testing Order: LNDM42 06/02/ Project: CBH Lots 12 & 13 Phone: Fax: Report Date: 06/08/17 Date Analyzed: 06/06/17 Metals in MCE cassette by ICP - NIOSH 7300M Lab ID Client ID Vol. (L) Analyte µg/filter µg/m 3 mg/m 3 Reporting Limit (µg/filter) AS060117S Arsenic <1.0 <0.97 < Sample received in acceptable condition unless otherwise noted. This report may not be reproduced except in full, without written approval by LA Testing. This report relates only to those items tested. Unless otherwise noted, the results in this report have not been blank corrected. Quality Control Data associated with this sample set is within acceptable limits, unless otherwise noted. JN Analyst Michael Chapman- Laboratory Manager Or other approved signatory AIHA- LAP, LLC Accredited - Laboratory ID # Page 1 of 1

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148 LA Testing 5431 Industrial Drive, Huntington Beach, CA Order ID: Attn: Ulf Lindmark Lindmark Engineering 2625 Townsgate Road Suite 330 Westlake Village, CA Customer ID: Customer PO: Date Received: LA Testing Order: LNDM42 06/06/ Project: CBH Lots 12 & 13 Phone: Fax: Report Date: 06/08/17 Date Analyzed: 06/06/17 Metals in MCE cassette by ICP - NIOSH 7300M Lab ID Client ID Vol. (L) Analyte µg/filter µg/m 3 mg/m 3 Reporting Limit (µg/filter) AS060517S Arsenic <1.0 <1.1 < Sample received in acceptable condition unless otherwise noted. This report may not be reproduced except in full, without written approval by LA Testing. This report relates only to those items tested. Unless otherwise noted, the results in this report have not been blank corrected. Quality Control Data associated with this sample set is within acceptable limits, unless otherwise noted. JN Analyst Michael Chapman- Laboratory Manager Or other approved signatory AIHA- LAP, LLC Accredited - Laboratory ID # Page 1 of 1

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150 LA Testing 5431 Industrial Drive, Huntington Beach, CA Order ID: Attn: Ulf Lindmark Lindmark Engineering 2625 Townsgate Road Suite 330 Westlake Village, CA Customer ID: Customer PO: Date Received: LA Testing Order: LNDM42 06/07/ Project: CBH Lots 12 & 13 Phone: Fax: Report Date: 06/12/17 Date Analyzed: 06/08/17 Metals in MCE cassette by ICP - NIOSH 7300M Lab ID Client ID Vol. (L) Analyte µg/filter µg/m 3 mg/m 3 Reporting Limit (µg/filter) AS060617S Arsenic <1.0 <1.1 < Sample received in acceptable condition unless otherwise noted. This report may not be reproduced except in full, without written approval by LA Testing. This report relates only to those items tested. Unless otherwise noted, the results in this report have not been blank corrected. Quality Control Data associated with this sample set is within acceptable limits, unless otherwise noted. JN Analyst Michael Chapman- Laboratory Manager Or other approved signatory AIHA- LAP, LLC Accredited - Laboratory ID # Page 1 of 1

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152 LA Testing 5431 Industrial Drive, Huntington Beach, CA Order ID: Attn: Ulf Lindmark Lindmark Engineering 2625 Townsgate Road Suite 330 Westlake Village, CA Customer ID: Customer PO: Date Received: LA Testing Order: LNDM42 06/08/ Project: CBH Lots 12 & 13 Phone: Fax: Report Date: 06/14/17 Date Analyzed: 06/12/17 Metals in MCE cassette by ICP - NIOSH 7300M Lab ID Client ID Vol. (L) Analyte µg/filter µg/m 3 mg/m 3 Reporting Limit (µg/filter) AS060717S Arsenic <1.0 <1.0 < Sample received in acceptable condition unless otherwise noted. This report may not be reproduced except in full, without written approval by LA Testing. This report relates only to those items tested. Unless otherwise noted, the results in this report have not been blank corrected. Quality Control Data associated with this sample set is within acceptable limits, unless otherwise noted. JN Analyst Michael Chapman- Laboratory Manager Or other approved signatory AIHA- LAP, LLC Accredited - Laboratory ID # Page 1 of 1

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154 LA Testing 5431 Industrial Drive, Huntington Beach, CA Order ID: Attn: Ulf Lindmark Lindmark Engineering 2625 Townsgate Road Suite 330 Westlake Village, CA Customer ID: Customer PO: Date Received: LA Testing Order: LNDM42 06/09/ Project: CBH Lots 12 & 13 Phone: Fax: Report Date: 06/16/17 Date Analyzed: 06/12/17 Metals in MCE cassette by ICP - NIOSH 7300M Lab ID Client ID Vol. (L) Analyte µg/filter µg/m 3 mg/m 3 Reporting Limit (µg/filter) AS S Arsenic <1.0 <1.0 < Sample received in acceptable condition unless otherwise noted. This report may not be reproduced except in full, without written approval by LA Testing. This report relates only to those items tested. Unless otherwise noted, the results in this report have not been blank corrected. Quality Control Data associated with this sample set is within acceptable limits, unless otherwise noted. JN Analyst Michael Chapman- Laboratory Manager Or other approved signatory AIHA- LAP, LLC Accredited - Laboratory ID # Page 1 of 1

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156 LA Testing 5431 Industrial Drive, Huntington Beach, CA Order ID: Attn: Ulf Lindmark Lindmark Engineering 2625 Townsgate Road Suite 330 Westlake Village, CA Customer ID: Customer PO: Date Received: LA Testing Order: LNDM /12/ Project: CBH Lots 12 & 13 Phone: Fax: Report Date: 06/19/17 Date Analyzed: 06/13/17 Metals in MCE cassette by ICP - NIOSH 7300M Lab ID Client ID Vol. (L) Analyte µg/filter µg/m 3 mg/m 3 Reporting Limit (µg/filter) AS S 1073 Arsenic <1.0 <0.93 < Sample received in acceptable condition unless otherwise noted. This report may not be reproduced except in full, without written approval by LA Testing. This report relates only to those items tested. Unless otherwise noted, the results in this report have not been blank corrected. Quality Control Data associated with this sample set is within acceptable limits, unless otherwise noted. JN Analyst Michael Chapman- Laboratory Manager Or other approved signatory AIHA- LAP, LLC Accredited - Laboratory ID # Page 1 of 1

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158 LA Testing 5431 Industrial Drive, Huntington Beach, CA Order ID: Attn: Ulf Lindmark Lindmark Engineering 2625 Townsgate Road Suite 330 Westlake Village, CA Customer ID: Customer PO: Date Received: LA Testing Order: LNDM42 06/13/ Project: CBH Lots 12 & 13 Phone: Fax: Report Date: 06/20/17 Date Analyzed: 06/13/17 Metals in MCE cassette by ICP - NIOSH 7300M Lab ID Client ID Vol. (L) Analyte µg/filter µg/m 3 mg/m 3 Reporting Limit (µg/filter) AS S Arsenic <1.0 <1.0 < Sample received in acceptable condition unless otherwise noted. This report may not be reproduced except in full, without written approval by LA Testing. This report relates only to those items tested. Unless otherwise noted, the results in this report have not been blank corrected. Quality Control Data associated with this sample set is within acceptable limits, unless otherwise noted. JN Analyst Michael Chapman- Laboratory Manager Or other approved signatory AIHA- LAP, LLC Accredited - Laboratory ID # Page 1 of 1

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160 LA Testing 5431 Industrial Drive, Huntington Beach, CA Order ID: Attn: Ulf Lindmark Lindmark Engineering 2625 Townsgate Road Suite 330 Westlake Village, CA Customer ID: Customer PO: Date Received: LA Testing Order: LNDM42 06/14/ Project: CBH Lots 12 & 13 Phone: Fax: Report Date: 06/20/17 Date Analyzed: 06/19/17 Metals in MCE cassette by ICP - NIOSH 7300M Lab ID Client ID Vol. (L) Analyte µg/filter µg/m 3 mg/m 3 Reporting Limit (µg/filter) AS S Arsenic <1.0 <0.93 < Sample received in acceptable condition unless otherwise noted. This report may not be reproduced except in full, without written approval by LA Testing. This report relates only to those items tested. Unless otherwise noted, the results in this report have not been blank corrected. Quality Control Data associated with this sample set is within acceptable limits, unless otherwise noted. JN Analyst Michael Chapman- Laboratory Manager Or other approved signatory AIHA- LAP, LLC Accredited - Laboratory ID # Page 1 of 1

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162 LA Testing 5431 Industrial Drive, Huntington Beach, CA Order ID: Attn: Ulf Lindmark Lindmark Engineering 2625 Townsgate Road Suite 330 Westlake Village, CA Customer ID: Customer PO: Date Received: LA Testing Order: LNDM42 06/16/ Project: CBH Lots 12 & 13 Phone: Fax: Report Date: 06/23/17 Date Analyzed: 06/21/17 Metals in MCE cassette by ICP - NIOSH 7300M Lab ID Client ID Vol. (L) Analyte µg/filter µg/m 3 mg/m 3 Reporting Limit (µg/filter) AS061517S Arsenic <1.0 <1.1 < Sample received in acceptable condition unless otherwise noted. This report may not be reproduced except in full, without written approval by LA Testing. This report relates only to those items tested. Unless otherwise noted, the results in this report have not been blank corrected. Quality Control Data associated with this sample set is within acceptable limits, unless otherwise noted. JN Analyst Michael Chapman- Laboratory Manager Or other approved signatory AIHA- LAP, LLC Accredited - Laboratory ID # Page 1 of 1

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164 LA Testing 5431 Industrial Drive, Huntington Beach, CA Order ID: Attn: Ulf Lindmark Lindmark Engineering 2625 Townsgate Road Suite 330 Westlake Village, CA Customer ID: Customer PO: Date Received: LA Testing Order: LNDM42 06/20/ Project: CBH Lots 12 & 13 Phone: Fax: Report Date: 06/27/17 Date Analyzed: 06/21/17 Metals in MCE cassette by ICP - NIOSH 7300M Lab ID Client ID Vol. (L) Analyte µg/filter µg/m 3 mg/m 3 Reporting Limit (µg/filter) AS061917S Arsenic <1.0 <1.5 < Sample received in acceptable condition unless otherwise noted. This report may not be reproduced except in full, without written approval by LA Testing. This report relates only to those items tested. Unless otherwise noted, the results in this report have not been blank corrected. Quality Control Data associated with this sample set is within acceptable limits, unless otherwise noted. JN Analyst Michael Chapman- Laboratory Manager Or other approved signatory AIHA- LAP, LLC Accredited - Laboratory ID # Page 1 of 1

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166 LA Testing 5431 Industrial Drive, Huntington Beach, CA Order ID: Attn: Ulf Lindmark Lindmark Engineering 2625 Townsgate Road Suite 330 Westlake Village, CA Customer ID: Customer PO: Date Received: LA Testing Order: LNDM42 06/27/ Project: CBH Lots 12 & 13 Phone: Fax: Report Date: 07/05/17 Date Analyzed: 06/29/17 Metals in MCE cassette by ICP - NIOSH 7300M Lab ID Client ID Vol. (L) Analyte µg/filter µg/m 3 mg/m 3 Reporting Limit (µg/filter) AS062617S Arsenic <1.0 <1.1 < Sample received in acceptable condition unless otherwise noted. This report may not be reproduced except in full, without written approval by LA Testing. This report relates only to those items tested. Unless otherwise noted, the results in this report have not been blank corrected. Quality Control Data associated with this sample set is within acceptable limits, unless otherwise noted. JN Analyst Michael Chapman- Laboratory Manager Or other approved signatory AIHA- LAP, LLC Accredited - Laboratory ID # Page 1 of 1

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168 Attn: EMSL Analytical, Inc. 200 Route 130 North, Cinnaminson, NJ Phone: (856) Fax: (856) Ulf Lindmark Lindmark Engineering 2625 Townsgate Road, Suite 330 Westlake Village, CA Phone: (818) Fax: 7/6/2017 The following analytical report covers the analysis performed on samples submitted to EMSL Analytical, Inc. on 6/28/2017. The results are tabulated on the attached data pages for the following client designated project: CBH Lots 12 & 13 The reference number for these samples is EMSL Order # Please use this reference when calling about these samples. If you have any questions, please do not hesitate to contact me at (856) Approved By: Phillip Worby, Environmental Chemistry Laboratory Director AIHA-LAP, LLC-IHLAP Lab # NELAP Certification: NJ 03036; NY The samples associated with this report were received in good condition unless otherwise noted. This report relates only to those items tested as received by the laboratory. The QC data associated with the sample results meet the recovery and precision requirements unless specifically indicated. The final results are not blank corrected unless specifically indicated. The laboratory is not responsible for final results calculated using air volumes that have been provided by non-laboratory personnel. This report may not be reproduced except in full and without written approval by EMSL Analytical, Inc. Page 1 of 2

169 EMSL Analytical, Inc. 200 Route 130 North, Cinnaminson, NJ Phone/Fax: (856) / (856) EnvChemistry2@emsl.com EMSL Order: CustomerID: CustomerPO: ProjectID: LNDM42 Attn: Ulf Lindmark Lindmark Engineering 2625 Townsgate Road, Suite 330 Westlake Village, CA Phone: (818) Fax: Received: 06/28/17 9:20 AM Project: CBH Lots 12 & 13 Analytical Results Client Sample Description AS062717S Collected: 6/27/2017 Lab ID: Downwind Method Parameter Result RL Units Prep Date Analyst Analysis Date 7300 Modified Arsenic ND mg/m³ 7/3/2017 AE 7/3/2017 DM Analyst Definitions: ND - indicates that the analyte was not detected at the reporting limit RL - Reporting Limit (Analytical) ChemSmplw/RDL/AIHA Printed: 7/6/ :15:54 AM Page 2 of 2

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171 Attn: EMSL Analytical, Inc. 200 Route 130 North, Cinnaminson, NJ Phone: (856) Fax: (856) Ulf Lindmark Lindmark Engineering 2625 Townsgate Road, Suite 330 Westlake Village, CA Phone: (818) Fax: 7/6/2017 The following analytical report covers the analysis performed on samples submitted to EMSL Analytical, Inc. on 6/29/2017. The results are tabulated on the attached data pages for the following client designated project: CBH Lots 12 and 13 The reference number for these samples is EMSL Order # Please use this reference when calling about these samples. If you have any questions, please do not hesitate to contact me at (856) Approved By: Phillip Worby, Environmental Chemistry Laboratory Director AIHA-LAP, LLC-IHLAP Lab # NELAP Certification: NJ 03036; NY The samples associated with this report were received in good condition unless otherwise noted. This report relates only to those items tested as received by the laboratory. The QC data associated with the sample results meet the recovery and precision requirements unless specifically indicated. The final results are not blank corrected unless specifically indicated. The laboratory is not responsible for final results calculated using air volumes that have been provided by non-laboratory personnel. This report may not be reproduced except in full and without written approval by EMSL Analytical, Inc. Page 1 of 2

172 EMSL Analytical, Inc. 200 Route 130 North, Cinnaminson, NJ Phone/Fax: (856) / (856) EnvChemistry2@emsl.com EMSL Order: CustomerID: CustomerPO: ProjectID: LNDM42 Attn: Ulf Lindmark Lindmark Engineering 2625 Townsgate Road, Suite 330 Westlake Village, CA Phone: (818) Fax: Received: 06/29/17 9:20 AM Project: CBH Lots 12 and 13 Analytical Results Client Sample Description AS062817S Collected: 6/28/2017 Lab ID: Downwind Method Parameter Result RL Units Prep Date Analyst Analysis Date 7300 Modified Arsenic ND mg/m³ 6/29/2017 AE 6/29/2017 DM Analyst Definitions: ND - indicates that the analyte was not detected at the reporting limit RL - Reporting Limit (Analytical) ChemSmplw/RDL/AIHA Printed: 7/6/ :34:46 AM Page 2 of 2

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174 Attn: EMSL Analytical, Inc. 200 Route 130 North, Cinnaminson, NJ Phone: (856) Fax: (856) Ulf Lindmark Lindmark Engineering 2625 Townsgate Road, Suite 330 Westlake Village, CA Phone: (818) Fax: 7/6/2017 The following analytical report covers the analysis performed on samples submitted to EMSL Analytical, Inc. on 6/30/2017. The results are tabulated on the attached data pages for the following client designated project: CBH Lots 12 and 13 The reference number for these samples is EMSL Order # Please use this reference when calling about these samples. If you have any questions, please do not hesitate to contact me at (856) Approved By: Phillip Worby, Environmental Chemistry Laboratory Director AIHA-LAP, LLC-IHLAP Lab # NELAP Certification: NJ 03036; NY The samples associated with this report were received in good condition unless otherwise noted. This report relates only to those items tested as received by the laboratory. The QC data associated with the sample results meet the recovery and precision requirements unless specifically indicated. The final results are not blank corrected unless specifically indicated. The laboratory is not responsible for final results calculated using air volumes that have been provided by non-laboratory personnel. This report may not be reproduced except in full and without written approval by EMSL Analytical, Inc. Page 1 of 2

175 EMSL Analytical, Inc. 200 Route 130 North, Cinnaminson, NJ Phone/Fax: (856) / (856) EnvChemistry2@emsl.com EMSL Order: CustomerID: CustomerPO: ProjectID: LNDM42 Attn: Ulf Lindmark Lindmark Engineering 2625 Townsgate Road, Suite 330 Westlake Village, CA Phone: (818) Fax: Received: 06/30/17 9:20 AM Project: CBH Lots 12 and 13 Analytical Results Client Sample Description AS062917S Collected: 6/29/2017 Lab ID: Downwind Method Parameter Result RL Units Prep Date Analyst Analysis Date 7300 Modified Arsenic ND mg/m³ 7/3/2017 AE 7/3/2017 DM Analyst Definitions: ND - indicates that the analyte was not detected at the reporting limit RL - Reporting Limit (Analytical) ChemSmplw/RDL/AIHA Printed: 7/6/ :35:20 AM Page 2 of 2

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177 Attn: EMSL Analytical, Inc. 200 Route 130 North, Cinnaminson, NJ Phone: (856) Fax: (856) Ulf Lindmark Lindmark Engineering 2625 Townsgate Road, Suite 330 Westlake Village, CA Phone: (818) Fax: 7/6/2017 The following analytical report covers the analysis performed on samples submitted to EMSL Analytical, Inc. on 7/3/2017. The results are tabulated on the attached data pages for the following client designated project: CBH Lots 12 and 13 The reference number for these samples is EMSL Order # Please use this reference when calling about these samples. If you have any questions, please do not hesitate to contact me at (856) Approved By: Phillip Worby, Environmental Chemistry Laboratory Director AIHA-LAP, LLC-IHLAP Lab # NELAP Certification: NJ 03036; NY The samples associated with this report were received in good condition unless otherwise noted. This report relates only to those items tested as received by the laboratory. The QC data associated with the sample results meet the recovery and precision requirements unless specifically indicated. The final results are not blank corrected unless specifically indicated. The laboratory is not responsible for final results calculated using air volumes that have been provided by non-laboratory personnel. This report may not be reproduced except in full and without written approval by EMSL Analytical, Inc. Page 1 of 2

178 EMSL Analytical, Inc. 200 Route 130 North, Cinnaminson, NJ Phone/Fax: (856) / (856) EnvChemistry2@emsl.com EMSL Order: CustomerID: CustomerPO: ProjectID: LNDM42 Attn: Ulf Lindmark Lindmark Engineering 2625 Townsgate Road, Suite 330 Westlake Village, CA Phone: (818) Fax: Received: 07/03/17 9:10 AM Project: CBH Lots 12 and 13 Analytical Results Client Sample Description AS063017S Collected: 6/30/2017 Lab ID: Downwind Method Parameter Result RL Units Prep Date Analyst Analysis Date 7300 Modified Arsenic ND mg/m³ 7/5/2017 AE 7/5/2017 DM Analyst Definitions: ND - indicates that the analyte was not detected at the reporting limit RL - Reporting Limit (Analytical) ChemSmplw/RDL/AIHA Printed: 7/6/2017 1:19:39 PM Page 2 of 2

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180 Attn: EMSL Analytical, Inc. 200 Route 130 North, Cinnaminson, NJ Phone: (856) Fax: (856) Ulf Lindmark Lindmark Engineering 2625 Townsgate Road, Suite 330 Westlake Village, CA Phone: (818) Fax: 7/10/2017 The following analytical report covers the analysis performed on samples submitted to EMSL Analytical, Inc. on 7/5/2017. The results are tabulated on the attached data pages for the following client designated project: CBH Lots 12 and 13 The reference number for these samples is EMSL Order # Please use this reference when calling about these samples. If you have any questions, please do not hesitate to contact me at (856) Approved By: Phillip Worby, Environmental Chemistry Laboratory Director AIHA-LAP, LLC-IHLAP Lab # NELAP Certification: NJ 03036; NY The samples associated with this report were received in good condition unless otherwise noted. This report relates only to those items tested as received by the laboratory. The QC data associated with the sample results meet the recovery and precision requirements unless specifically indicated. The final results are not blank corrected unless specifically indicated. The laboratory is not responsible for final results calculated using air volumes that have been provided by non-laboratory personnel. This report may not be reproduced except in full and without written approval by EMSL Analytical, Inc. Page 1 of 2

181 EMSL Analytical, Inc. 200 Route 130 North, Cinnaminson, NJ Phone/Fax: (856) / (856) EnvChemistry2@emsl.com EMSL Order: CustomerID: CustomerPO: ProjectID: LNDM42 Attn: Ulf Lindmark Lindmark Engineering 2625 Townsgate Road, Suite 330 Westlake Village, CA Phone: (818) Fax: Received: 07/05/17 9:15 AM Project: CBH Lots 12 and 13 Analytical Results Client Sample Description AS070317S Collected: 7/3/2017 Lab ID: Downwind 8:00:00 AM Method Parameter Result RL Units Prep Date Analyst Analysis Date 7300 Modified Arsenic ND mg/m³ 7/6/2017 AE 7/6/2017 DM Analyst Definitions: ND - indicates that the analyte was not detected at the reporting limit RL - Reporting Limit (Analytical) ChemSmplw/RDL/AIHA Printed: 7/10/2017 2:32:16 PM Page 2 of 2

182 OrderID: Page 1 Of 1

Attn: EMSL Analytical, Inc. 200 Route 130 North, Cinnaminson, NJ 08077 Phone: (856) 303-2500 Fax: (856) 858-4571 Email: EnvChemistry2@emsl.

183 Attn: EMSL Analytical, Inc. 200 Route 130 North, Cinnaminson, NJ Phone: (856) Fax: (856) Ulf Lindmark Lindmark Engineering 2625 Townsgate Road, Suite 330 Westlake Village, CA Phone: (818) Fax: 7/10/2017 The following analytical report covers the analysis performed on samples submitted to EMSL Analytical, Inc. on 7/7/2017. The results are tabulated on the attached data pages for the following client designated project: CBH Lots 12 and 13 The reference number for these samples is EMSL Order # Please use this reference when calling about these samples. If you have any questions, please do not hesitate to contact me at (856) Approved By: Phillip Worby, Environmental Chemistry Laboratory Director AIHA-LAP, LLC-IHLAP Lab # NELAP Certification: NJ 03036; NY The samples associated with this report were received in good condition unless otherwise noted. This report relates only to those items tested as received by the laboratory. The QC data associated with the sample results meet the recovery and precision requirements unless specifically indicated. The final results are not blank corrected unless specifically indicated. The laboratory is not responsible for final results calculated using air volumes that have been provided by non-laboratory personnel. This report may not be reproduced except in full and without written approval by EMSL Analytical, Inc. Page 1 of 2

184 EMSL Analytical, Inc. 200 Route 130 North, Cinnaminson, NJ Phone/Fax: (856) / (856) EnvChemistry2@emsl.com EMSL Order: CustomerID: CustomerPO: ProjectID: LNDM42 Attn: Ulf Lindmark Lindmark Engineering 2625 Townsgate Road, Suite 330 Westlake Village, CA Phone: (818) Fax: Received: 07/07/17 9:25 AM Project: CBH Lots 12 and 13 Analytical Results Client Sample Description AS070617S/G Collected: 7/6/2017 Lab ID: Downwind 8:30:00 AM Method Parameter Result RL Units Prep Date Analyst Analysis Date 7300 Modified Arsenic ND mg/m³ 7/7/2017 AE 7/7/2017 DM Analyst Definitions: ND - indicates that the analyte was not detected at the reporting limit RL - Reporting Limit (Analytical) ChemSmplw/RDL/AIHA Printed: 7/10/2017 2:33:02 PM Page 2 of 2

185 OrderID: Page 1 Of 1

186 Attn: EMSL Analytical, Inc. 200 Route 130 North, Cinnaminson, NJ Phone: (856) Fax: (856) Ulf Lindmark Lindmark Engineering 2625 Townsgate Road, Suite 330 Westlake Village, CA Phone: (818) Fax: 7/13/2017 The following analytical report covers the analysis performed on samples submitted to EMSL Analytical, Inc. on 7/11/2017. The results are tabulated on the attached data pages for the following client designated project: CBH Lots 12 and 13 The reference number for these samples is EMSL Order # Please use this reference when calling about these samples. If you have any questions, please do not hesitate to contact me at (856) Approved By: Phillip Worby, Environmental Chemistry Laboratory Director AIHA-LAP, LLC-IHLAP Lab # NELAP Certification: NJ 03036; NY The samples associated with this report were received in good condition unless otherwise noted. This report relates only to those items tested as received by the laboratory. The QC data associated with the sample results meet the recovery and precision requirements unless specifically indicated. The final results are not blank corrected unless specifically indicated. The laboratory is not responsible for final results calculated using air volumes that have been provided by non-laboratory personnel. This report may not be reproduced except in full and without written approval by EMSL Analytical, Inc. Page 1 of 2

187 EMSL Analytical, Inc. 200 Route 130 North, Cinnaminson, NJ Phone/Fax: (856) / (856) EnvChemistry2@emsl.com EMSL Order: CustomerID: CustomerPO: ProjectID: LNDM42 Attn: Ulf Lindmark Lindmark Engineering 2625 Townsgate Road, Suite 330 Westlake Village, CA Phone: (818) Fax: Received: 07/11/17 7:45 AM Project: CBH Lots 12 and 13 Analytical Results Client Sample Description AS070717S Collected: 7/7/2017 Lab ID: Downwind Method Parameter Result RL Units Prep Date Analyst Analysis Date 7300 Modified Arsenic ND mg/m³ 7/11/2017 AE 7/11/2017 DM Analyst Definitions: ND - indicates that the analyte was not detected at the reporting limit RL - Reporting Limit (Analytical) ChemSmplw/RDL/AIHA Printed: 7/13/2017 2:00:55 PM Page 2 of 2

188 OrderID: Page 1 Of 1

Applicant Type (Conditional Use Permit, Variance, Tract Map, etc.): Applicant: Address: Phone(s): Fax:

Applicant Type (Conditional Use Permit, Variance, Tract Map, etc.): Applicant: Address: Phone(s): Fax: ENVIRONMENTAL QUESTIONNAIRE City of Twentynine Palms Community Development Department 6136 Adobe Road Twentynine Palms, CA 92277 (760) 367-6799 Fax (760) 367-5400 29palms.org : Please complete each statement