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Attachment 4a - H2 Soil Vapor Investigation Memo (2)
Appendix H2 Soil Vapor Investigation Summary Memo 16644 West Bernardo Drive, Suite 301 San Diego, CA 92127 PH 858.674.6559 FAX 858.674.6586 www.geosyntec.com Report_PhaseII_20200220.d Memorandum Date: To: From: Subject: 20 February 2020 David W. Shepherd, Lennar Homes Veryl Wittig, PG, CHG, Geosyntec Consultants Soil Vapor Investigation Summary Sunbow Proposed Development Chula Vista, California Geosyntec has prepared this technical memorandum (memo) summarizing the results of the limited soil vapor investigation conducted at the approximately 136-acre property comprised of two parcels in the City of Chula Vista with Assessor’s Parcel Numbers 644-011-06-00 and 644- 020-11-00 (i.e., the “site”; Figure 1). The investigation was conducted in support of Lennar’s pre- purchase due diligence process, and was conducted to address potential environmental concerns related to the operating Republic Services Otay Mesa Class III Landfill located adjoining south and southeast of the site (Figure 2). The potential environmental concerns were identified during a Phase I Environmental Site Assessment (ESA) recently conducted for the site. BACKGROUND AND OBJECTIVE Portions of the Otay Class III Landfill adjoin the site to the south and southeast, and the Otay Class III landfill surrounds the adjoining Otay Class I Landfill (Figure 2). Both the Class I and Class III landfills have groundwater monitoring networks, which are monitored semiannually under orders issued by the San Diego Regional Water Quality Control Board (SDRWQCB). Groundwater flow at both landfills is generally to the south-southwest away from the site, and there are no indications of groundwater impacts beneath the site attributable to the two adjoining landfills. The Class III landfill is equipped with a landfill gas control system (LFGCS) and a perimeter probe monitoring network that is routinely monitored under the direction of the County of San Diego Local Enforcement Agency (LEA). Methane has not been detected above 1% by volume at the perimeter probes closest to the Site. A draft Phase I Environmental Site Assessment (ESA) was prepared for the site in January 2020, which revealed no evidence of recognized environmental conditions (RECs) in connection with the site. However, the following REC was identified in the draft Phase I ESA report: “Historical investigations performed in the 1990s to assess potential impacts to the site from the adjoining landfill properties identified subsurface methane which had migrated beneath the site Soil Vapor Investigation Summary 20 February 2020 Page 2 from the Class III landfill at concentrations up to 3,300 parts per million (ppm) methane, which is more than an order of magnitude lower than the lower explosive limit (LEL) of methane (50,000 ppm, or 5% by volume). As required by Title 27 of the California Code of Regulations, the landfill owner/operator is required to install and operate a LFGCS and install and monitor a network of perimeter monitoring probes. Operation of the LFGCS at the adjoining Class III landfill is ongoing, and methane has not been detected above 1% by volume at perimeter probes closest to the site, and has been detected at concentrations of 0.10% in only two probes since January 2018. Therefore, the engineering controls on the adjoining Class III landfill property appear to be effectively controlling subsurface methane migration from the landfill property to the site.” The absence of recent soil vapor data for the site was noted as a data gap in the draft Phase I ESA. Available data for the Class III landfill perimeter monitoring network indicates that gas concentrations at the landfill boundary adjoining the site are below regulatory thresholds, and historical data collected at the site in the 1990s indicated that the methane LEL in the subsurface was not exceeded. However, recent data regarding the potential presence of volatile organic compounds (VOCs; e.g., benzene, tetrachloroethene [PCE], trichloroethene [TCE]) commonly associated with landfill gas are not available to evaluate potential vapor intrusion concerns for future structures planned for construction at the site. Therefore, the objective of the investigation described herein was to address this data gap by conducting a soil vapor survey at the site to evaluate current onsite subsurface soil vapor conditions and potential subsurface impacts attributable to the adjoining Otay Class III landfill. METHODOLOGY Temporary Soil Vapor Probe Construction Five triple-nested soil vapor probes (SVPs) were constructed using a track-mounted direct-push drilling rig on 24 January 2020 near the perimeter of the property, where the site adjoins the Otay Class III landfill (Figure 3). The triple-nested SVPs were constructed inside 2-inch diameter borings with probes at 5 and 10 feet below ground surface (ft bgs). Four of the five SVPs (SVP-1 through SVP-4) had their deepest probe installed at 19.5 ft bgs. Due to refusal encountered at a depth of 15 feet in SVP-5, the deepest probe at that location was 15 ft bgs. Each probe interval consists of a 6-inch long by ½-inch diameter stainless-steel-screened vapor probe with dedicated ¼-inch Teflon tubing extending to the ground surface. An approximately 1-foot interval of the borehole surrounding the probe (i.e., approximately 3 inches above and below the vapor probe screen) was backfilled with clean #3 sand. Approximately 6 inches of dry granular bentonite was placed above the sand layer, followed by placement of hydrated bentonite to create a seal between the probe intervals. The remainder of the borehole above the upper probe interval at each location was backfilled with hydrated granular bentonite to the surface. Report_PhaseII_20200220.d Soil Vapor Investigation Summary 20 February 2020 Page 3 Soil Vapor Sampling Methodology The SVPs were sampled on 27 January 2020 in general accordance with the current State of California Department of Toxic Substances Control (DTSC) Advisory for Active Soil Gas Investigations (DTSC Advisory) [DTSC, 2015]. Leak checks involving “shut-in” and tracer tests were performed using a conservative tracer gas (e.g. helium) to monitor that fittings in the sampling train did not leak at an applied vacuum of up to 100 inches of water column. After leak checks were performed (and any leaks detected were remedied), three ‘dead space’ pore volumes were purged prior to sample collection. Field screening of vapor samples to assess subsurface fixed gas concentrations (i.e., methane, oxygen, and carbon dioxide) was conducted using a LANDTEC® GEM5000 landfill gas monitor. Soil-vapor samples were collected in 1-Liter Tedlar® bags and forwarded to Eurofins Calscience, Inc. (Calscience) of Garden Grove, California, a California Department of Public Health (CDPH) Environmental Laboratory Accreditation Program (ELAP) certified laboratory. Samples were analyzed for VOCs by United States Environmental Protection Agency (EPA) Method TO-15, and for fixed gases (methane, carbon dioxide, carbon monoxide, nitrogen, and oxygen + argon) by EPA Method D1946. RESULTS Constituents detected in soil vapor samples collected during the investigation are summarized in Table 1, and the associated laboratory analytical report is included as Attachment 1. Detected constituents were compared to San Francisco Bay Regional Water Quality Control Board (SFBRWQCB) Tier 1 Environmental Screening Levels for Residential Sub-slab / Soil Gas (Tier 1 ESLs) [SFBRWQCB, 2019]. These screening levels are based on an excess lifetime cancer risk (ELCR) of “one-in-a-million” (denoted as 1x10-6) as an acceptable risk level, and were derived based on a generic conservative conceptual site model designed for use at most sites for site screening purposes. If a Tier 1 ESL has not been established for a given analyte, then the analytes were compared to their respective EPA Regional Screening Levels (RSLs) for indoor air quality in a residential setting [EPA, 2019]. To calculate an EPA RSL for sub-slab / subsurface soil vapor using the EPA RSL for residential indoor air, the conservative default 0.03 attenuation factor (recently adopted for use by the SFBRWQCB) was applied. To calculate an EPA RSL, the 0.03 attenuation factor is divided into the analyte’s RSL for indoor air. For example, the EPA RSL for TCE in residential indoor air is 0.48 µg/m3. Applying the conservative default attenuation factor of 0.03 results in an EPA RSL of 16 µg/m3 for samples collected from sub-slab / subsurface soil vapor. Similar to Tier 1 ESLs, the 0.03 attenuation factor is generally applied for conservative site screening purposes to determine if additional assessment is warranted. In general, the presence of a constituent in soil vapor at a concentration below the Tier I ESLs can be assumed to not pose a significant health risk for residential receptors. Likewise, the presence of a constituent in soil vapor at a concentration above the Tier I ESLs does not indicate that adverse Report_PhaseII_20200220.d Report_PhaseII_20200220.d Soil Vapor Investigation Summary 20 February 2020 Page 4 impacts to human health are occurring or will occur in the future, but may indicate that additional evaluation of potential risk to human health is warranted. The following analytes were detected during the investigation in excess of their respective Tier 1 ESL or EPA RSL (using the conservative default 0.03 attenuation factor) for soil vapor samples collected at the site: •Benzene was detected above the Tier 1 ESL of 3.2 micrograms per cubic meter (µg/m3) in six samples, at concentrations ranging from 3.9 µg/m3 (SVP1-19.5) to 20 µg/m3 (SVP3-19.5); •Bromodichloromethane was detected above the Tier 1 ESL of 2.5 µg/m3 in one sample, at a concentration of 5.3 µg/m3 (SVP3-19.5); •Chloroform was detected above the Tier 1 ESL of 2.4 µg/m3 in one sample, at a concentration of 7.0 µg/m3 (SVP3-19.5); and •Vinyl chloride was detected above the Tier 1 ESL of 0.32 µg/m3 in one sample, at a concentration of 1.8 µg/m3 (SVP1-5). Methane was not detected in samples above the laboratory screening level, and was not detected during field screening, indicating that the LFGCS is effectively controlling offsite migration of methane from the landfill. DISCUSSION The analytes noted above were detected at concentrations marginally exceeding their respective Tier 1 ESLs or EPA RSLs for sub-slab/subsurface soil vapor in a residential site scenario. However, these screening levels do not account for additional attenuation with depth into the soil column, quality of the overlying concrete slab, or other site-specific factors, and are therefore overly conservative for use at the site. Instead, comparison to default DTSC screening levels (SLs) for future residential structures is more appropriate. Default DTSC-SLs for preliminary screening evaluations differentiate between samples collected from the interval immediately below the slab and samples collected from SVPs screened within the vadose zone, because VOCs in soil vapor at depth are additionally inhibited from upward migration due to inherent properties of the overlying soils (such as permeability and moisture content). Further, the DTSC-SLs for future residential structures more appropriately account for additional attenuation resulting from the use of modern construction methods, earthwork/grading activities, and new, competent concrete slab pours. Recent communication with DTSC indicates that DTSC intends to continue to recommend use of their default attenuation factor of 0.001 for the subsurface-to-indoor pathway for new residential construction [DTSC, 2011]. To calculate a DTSC-SL for future residential structures, this attenuation factor is applied to the corresponding DTSC-modified screening levels for residential indoor air, many of which (including benzene) are modified to be additionally conservative Report_PhaseII_20200220.d Soil Vapor Investigation Summary 20 February 2020 Page 5 compared to EPA RSLs. The calculated default DTSC-SLs for subsurface soil vapor are as follows: Constituent Residential Ambient Air Screening Level (µg/m3) DTSC Recommended Future Residential Attenuation Factor DTSC-SL for Subsurface Soil Vapor Future Residential Scenario (µg/m3) Benzene 0.097 0.001 97 Bromodichloromethane 0.076 0.001 76 Chloroform 0.12 0.001 120 Vinyl Chloride 0.0095 0.001 9.5 Using the DTSC-recommended default attenuation factors, no analytes were detected in excess of the calculated DTSC-SLs for subsurface soil vapor beneath future residential structures. Methane was not detected at measurable concentrations during the investigation. It is Geosyntec’s understanding that the City of Chula Vista does not currently have building standards that require building protection systems (such as a vapor barrier with passive sub-slab ventilation) for the new construction of occupied structures within 1,000 feet of a Class III landfill. SUMMARY AND CONCLUSIONS The soil vapor investigation conducted on 24 and 27 January 2020 documented methane was not detected in the samples, indicating that the LFGCS is effectively controlling the migration of methane from the adjoining Class III landfill. Low-level concentrations of VOCs were detected in soil vapor samples collected at the site, including four analytes detected in one or more samples at concentrations at concentrations above their respective Tier 1 ESLs or EPA RSLs for a residential site scenario. However, none of these analyte concentrations exceeded calculated DTSC-SLs for future residential construction. Therefore, with the understanding that the adjoining Class III landfill owner/operator will continue to operate the LFGCS in accordance with Title 27 requirements, future earth-moving activities in preparation for site development and construction will likely result in dissipation of residual VOC concentrations in shallow soil vapor, and future structures will be constructed using modern building practices with competent concrete slabs, there is no apparent unacceptable risk to future residential site occupants due to methane and/or VOC- impacted soil vapor. ***** Soil Vapor Investigation Summary 20 February 2020 Page 6 Report_PhaseII_20200220.d REFERENCES: DTSC, 2011. Final Guidance for the Evaluation and Mitigation of Subsurface Vapor Intrusion to Indoor Air. October. DTSC, 2015. Advisory for Active Soil Gas Investigations California Environmental Protection Agency Department of Toxic Substances Control. July. DTSC, 2019. Human Health Risk Assessment Note 3 – DTSC-Modified Screening Levels (DTSC- SLs), April 2019 Update. April. EPA, 2019. Regional Screening Level (RSL) Composite Worker Ambient Air Table (TR=1E-06, HQ=1). November. SFBRWQCB, 2019. San Francisco Bay Regional Water Quality Control Board Tier 1 Environmental Screening Levels, 2019 (Rev. 2). ATTACHMENTS: Table 1 – Summary of Soil Vapor Sample Detections Figure 1 – Site Location Figure 2 – Site Vicinity Map Figure 3 – Soil Vapor Probe Locations Attachment 1 – Laboratory Analytical Report cc: Ryan Green, Lennar AnalyteRLSFBRWQCB SLDTSC-SL Units SVP1-5 SVP1-10 SVP1-19.5 SVP2-5 SVP2-10 SVP2-19.5 SVP3-5 SVP3-10 SVP3-19.5 SVP4-5 SVP4-10 SVP4-19.5 SVP5-5 SVP5-10 SVP5-151,3,5-Trimethylbenzene 2.52100 63000 µg/m3ND ND ND 2.9 ND ND ND ND ND ND NDND ND ND ND2-Butanone4.4170000 5200000µg/m316 19 14 11 10 9.3 8.0 9.6 10 12 141014 14 134-Ethyltoluene2.5NE NEµg/m3ND ND ND ND ND ND ND ND ND ND 36ND ND ND NDAcetone121066667 32000000µg/m377 66 48 48 3735 47 4648 45 625748 50 42Benzene1.63.2 97µg/m34.2 5.8 3.92.3 ND ND 2.43.7 202.3 2.59.4ND ND NDBromodichloromethane 3.42.5 76µg/m3ND ND ND ND ND ND ND ND5.3ND ND ND ND ND NDCarbon disulfide 162433 730000µg/m316 26 ND ND ND ND ND ND 44 ND ND25ND ND NDChloroform2.44.1 120µg/m3ND ND ND 3.7 2.5 ND ND ND7.02.8 ND 3.2 ND ND NDChloromethane 1.03100 94000µg/m3ND 1.1 ND ND ND ND ND ND 2.5 ND NDND ND ND NDDichlorodifluoromethane 2.83333 100000µg/m32.8 7.4 10 10 1112 2.5 ND 7.8 13 8.5145.5 7.0 6.8Ethylbenzene2.837 1100µg/m32.8 3.2 ND 4.8 ND ND ND 3.5 7.0 ND 2.83.1 ND ND NDo-Xylene2.23333 100000µg/m33.5 3.5 ND 6.5 ND ND ND 4.1 20 2.3 ND2.7 ND 2.2 NDm,p-Xylene8.73333 100000µg/m3ND ND ND 18 ND ND ND 11 27.0 ND NDND ND ND NDTotal Xylenes-3500 100000µg/m33.5 3.5 ND 24.5 ND ND ND 15.1 47.0 2.3 ND2.7 ND 2.2 NDTetrachloroethene3.415 2000µg/m3ND ND 3.5 ND ND ND ND ND ND ND NDND ND ND NDToluene2610000 310000µg/m326 27 22 28 ND ND 20 2853 24 25027ND 20 NDVinyl Chloride1.30.32 9.5µg/m31.8ND ND ND ND ND ND ND ND ND ND ND ND ND NDCarbon Dioxide0.5NE NE% v/v ND ND ND ND ND ND ND ND ND 1.1 0.821.3 0.67 ND NDMethane0.5NE NE% v/v ND ND ND ND ND ND ND ND ND ND NDND ND ND NDNitrogen0.5NE NE% v/v 76 78 76 78 7877 79 7877 77 787676 77 76Oxygen + Argon0.5 NE NE % v/v 23 24 23 23 2322 21 2121 21 222122 23 22Notes:RL - laboratory reporting limitµg/m3- micrograms per cubic meter% v/v - percent volume per volumeNE indicates there is not an established SFBRWQCB ESL, USEPA RSL, or DTSC-SL for this analyteND indicates compound was not detected at the laboratory reporting limit (RL)Samples were analyzed for volatile organic compounds (57 compounds) by USEPA Method TO-15***Only analytes detected in one or more sample above the RL are shown***SFBRWQCB SLs - San Francisco Regional Water Quality Control Board (SFBRWQCB) Tier 1 (residential) Environmental Screening Levels (ESLs) for sub-slab / soil vapor, based on a generic conceptual site model designed for use at most sites. USEPA Regional Screening Levels (RSLs) for residential sub-slab / soil vapor (April 2019) used where no Tier 1 ESL has been established. USEPA RSLs were calculated by dividing the RSL for residential indoor air quality by the conservative default 0.03 attenuation factor.DTSC-SL - California Department of Toxic Substances Control (DTSC) screening level for future residential structures, calculated by applying the default 0.001 attenuation factor for future residential construction to the DTSC modified screening level for residential indoor air or the USEPA RSL for residential indoor air, whichever is more conservative.Values in bold were detected above the SFBRWQCB SL but below the DTSC-SLTable 1Summary of Soil Vapor Sample DetectionsChula Visa, CaliforniaSunbow Proposed Development P:\CAD_GIS\Projects\SC1029_Sunbow Chula Vista\MXDs\Figure 1 Site Location Map.mxd 1/10/2020 12:07:16 PM ³Sunbow Chula Vista, Chula Vista, California Site Location Map Figure 1 SC1029 January 2020 Legend Site Location Sources: Esri, HERE, Garmin, USGS, Intermap, INCREMENT P, NRCan, Esri Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), NGCC, (c) OpenStreetMap contributors, and the GIS User Community San Diego Metro Area Vista Escondido Oceanside Encinitas Cleveland NF San Bernardino NF C a l i f ornia Site Location 0 1,000 2,000500 Feet P:\CAD_GIS\Projects\SC1029_Sunbow Chula Vista\MXDs\Figure 3 Site Vicintiy Map.mxd 1/17/2020 9:49:13 AM Legend Approximate Site Boundary Approximate Wetland Easement Notes: All locations are approximate. Imagery courtesy of Google Earth, 2018. 0 600 1,200300 Feet ³Sunbow Chula Vista,Chula Vista, California Site Vicinity Map Figure 2SC1029January 2020 Olympic Parkway Interstate 805Residential Residential Vacant Otay Annex Sanitary Landfill Otay Class I Landfill Former Otay Rendering Landfill Otay Valley Industrial Park Soil Vapor Probe LocationsSunbow DevelopmentAPNs 644-011-06-00 and 644-020-11-00Chula Vista, CaliforniaFigure3SC1029January 2020LegendSoil Vapor Probe Location0520 260520 Feet ANALYTICAL REPORT Eurofins Calscience LLC 7440 Lincoln Way Garden Grove, CA 92841 Tel: (714)895-5494 Laboratory Job ID: 570-19024-1 Client Project/Site: SC1029-02 Revision: 1 For: Geosyntec Consultants, Inc. 16644 West Bernardo Drive Suite 301 San Diego, California 92127 Attn: Christopher Lieder Authorized for release by: 1/30/2020 10:50:58 AM Stephen Nowak, Project Manager I (714)895-5494 stephennowak@eurofinsus.com The test results in this report meet all 2003 NELAC and 2009 TNI requirements for accredited parameters, exceptions are noted in this report. This report may not be reproduced except in full, and with written approval from the laboratory. For questions please contact the Project Manager at the e-mail address or telephone number listed on this page. This report has been electronically signed and authorized by the signatory. Electronic signature is intended to be the legally binding equivalent of a traditionally handwritten signature. Results relate only to the items tested and the sample(s) as received by the laboratory. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Table of Contents Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Laboratory Job ID: 570-19024-1 Page 2 of 67 Eurofins Calscience LLC 1/30/2020 (Rev. 1) Cover Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 Definitions/Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Case Narrative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Detection Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Client Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 Surrogate Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36 QC Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37 QC Association Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55 Lab Chronicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57 Certification Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61 Method Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62 Sample Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63 Chain of Custody . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64 Receipt Checklists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Definitions/Glossary Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Qualifiers Air - GC/MS VOA Qualifier Description J Result is less than the RL but greater than or equal to the MDL and the concentration is an approximate value. Qualifier Glossary These commonly used abbreviations may or may not be present in this report. ¤Listed under the "D" column to designate that the result is reported on a dry weight basis Abbreviation %R Percent Recovery CFL Contains Free Liquid CNF Contains No Free Liquid DER Duplicate Error Ratio (normalized absolute difference) Dil Fac Dilution Factor DL Detection Limit (DoD/DOE) DL, RA, RE, IN Indicates a Dilution, Re-analysis, Re-extraction, or additional Initial metals/anion analysis of the sample DLC Decision Level Concentration (Radiochemistry) EDL Estimated Detection Limit (Dioxin) LOD Limit of Detection (DoD/DOE) LOQ Limit of Quantitation (DoD/DOE) MDA Minimum Detectable Activity (Radiochemistry) MDC Minimum Detectable Concentration (Radiochemistry) MDL Method Detection Limit ML Minimum Level (Dioxin) NC Not Calculated ND Not Detected at the reporting limit (or MDL or EDL if shown) PQL Practical Quantitation Limit QC Quality Control RER Relative Error Ratio (Radiochemistry) RL Reporting Limit or Requested Limit (Radiochemistry) RPD Relative Percent Difference, a measure of the relative difference between two points TEF Toxicity Equivalent Factor (Dioxin) TEQ Toxicity Equivalent Quotient (Dioxin) Eurofins Calscience LLC Page 3 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Case Narrative Client: Geosyntec Consultants, Inc.Job ID: 570-19024-1 Project/Site: SC1029-02 Job ID: 570-19024-1 Laboratory: Eurofins Calscience LLC Narrative Job Narrative 570-19024-1 Comments No additional comments. Receipt The samples were received on 1/27/2020 7:10 PM; the samples arrived in good condition, properly preserved and, where required, on ice. The temperature of the cooler at receipt was 22.0º C. Air Toxics No analytical or quality issues were noted, other than those described in the Definitions/Glossary page. Eurofins Calscience LLC Page 4 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Detection Summary Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Client Sample ID: SVP1-5 Lab Sample ID: 570-19024-1 2-Butanone RL 4.4 ug/m3 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA116TO-15 Acetone 12 ug/m3 Total/NA177TO-15 Benzene 1.6 ug/m3 Total/NA14.2 TO-15 Carbon disulfide 16 ug/m3 Total/NA116TO-15 Dichlorodifluoromethane 2.5 ug/m3 Total/NA12.8 TO-15 Ethylbenzene 2.2 ug/m3 Total/NA12.8 TO-15 o-Xylene 2.2 ug/m3 Total/NA13.5 TO-15 Toluene 19 ug/m3 Total/NA126TO-15 Vinyl chloride 1.3 ug/m3 Total/NA11.8 TO-15 Nitrogen 0.50 % v/v Total/NA176D1946 Oxygen + Argon 0.50 % v/v Total/NA123D1946 Nitrogen 0.50 % v/v Total/NA177Fixed Gas Norm Oxygen + Argon 0.50 % v/v Total/NA123Fixed Gas Norm Client Sample ID: SVP1-10 Lab Sample ID: 570-19024-2 2-Butanone RL 4.4 ug/m3 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA119TO-15 Acetone 12 ug/m3 Total/NA166TO-15 Benzene 1.6 ug/m3 Total/NA15.8 TO-15 Carbon disulfide 16 ug/m3 Total/NA126TO-15 Chloromethane 1.0 ug/m3 Total/NA11.1 TO-15 Dichlorodifluoromethane 2.5 ug/m3 Total/NA17.4 TO-15 Ethylbenzene 2.2 ug/m3 Total/NA13.2 TO-15 o-Xylene 2.2 ug/m3 Total/NA13.5 TO-15 Toluene 19 ug/m3 Total/NA127TO-15 Nitrogen 0.50 % v/v Total/NA178D1946 Oxygen + Argon 0.50 % v/v Total/NA124D1946 Nitrogen 0.50 % v/v Total/NA177Fixed Gas Norm Oxygen + Argon 0.50 % v/v Total/NA123Fixed Gas Norm Client Sample ID: SVP1-19.5 Lab Sample ID: 570-19024-3 2-Butanone RL 4.4 ug/m3 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA114TO-15 Acetone 12 ug/m3 Total/NA148TO-15 Benzene 1.6 ug/m3 Total/NA13.9 TO-15 Dichlorodifluoromethane 2.5 ug/m3 Total/NA110TO-15 Tetrachloroethene 3.4 ug/m3 Total/NA13.5 TO-15 Toluene 19 ug/m3 Total/NA122TO-15 Nitrogen 0.50 % v/v Total/NA176D1946 Oxygen + Argon 0.50 % v/v Total/NA123D1946 Nitrogen 0.50 % v/v Total/NA177Fixed Gas Norm Oxygen + Argon 0.50 % v/v Total/NA123Fixed Gas Norm Client Sample ID: SVP2-5 Lab Sample ID: 570-19024-4 1,3,5-Trimethylbenzene RL 2.5 ug/m3 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA12.9 TO-15 2-Butanone 4.4 ug/m3 Total/NA111TO-15 Acetone 12 ug/m3 Total/NA148TO-15 Benzene 1.6 ug/m3 Total/NA12.3 TO-15 Eurofins Calscience LLC This Detection Summary does not include radiochemical test results. Page 5 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Detection Summary Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Client Sample ID: SVP2-5 (Continued)Lab Sample ID: 570-19024-4 Chloroform RL 2.4 ug/m3 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA13.7 TO-15 Dichlorodifluoromethane 2.5 ug/m3 Total/NA110TO-15 Ethylbenzene 2.2 ug/m3 Total/NA14.8 TO-15 o-Xylene 2.2 ug/m3 Total/NA16.5 TO-15 m,p-Xylene 8.7 ug/m3 Total/NA118TO-15 Toluene 19 ug/m3 Total/NA128TO-15 Nitrogen 0.50 % v/v Total/NA178D1946 Oxygen + Argon 0.50 % v/v Total/NA123D1946 Nitrogen 0.50 % v/v Total/NA178Fixed Gas Norm Oxygen + Argon 0.50 % v/v Total/NA122Fixed Gas Norm Client Sample ID: SVP2-10 Lab Sample ID: 570-19024-5 2-Butanone RL 4.4 ug/m3 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA110TO-15 Acetone 12 ug/m3 Total/NA137TO-15 Chloroform 2.4 ug/m3 Total/NA12.5 TO-15 Dichlorodifluoromethane 2.5 ug/m3 Total/NA111TO-15 Nitrogen 0.50 % v/v Total/NA178D1946 Oxygen + Argon 0.50 % v/v Total/NA123D1946 Nitrogen 0.50 % v/v Total/NA178Fixed Gas Norm Oxygen + Argon 0.50 % v/v Total/NA122Fixed Gas Norm Client Sample ID: SVP2-19.5 Lab Sample ID: 570-19024-6 2-Butanone RL 4.4 ug/m3 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA19.3 TO-15 Acetone 12 ug/m3 Total/NA135TO-15 Dichlorodifluoromethane 2.5 ug/m3 Total/NA112TO-15 Nitrogen 0.50 % v/v Total/NA177D1946 Oxygen + Argon 0.50 % v/v Total/NA122D1946 Nitrogen 0.50 % v/v Total/NA178Fixed Gas Norm Oxygen + Argon 0.50 % v/v Total/NA122Fixed Gas Norm Client Sample ID: SVP3-5 Lab Sample ID: 570-19024-7 2-Butanone RL 4.4 ug/m3 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA18.0 TO-15 Acetone 12 ug/m3 Total/NA147TO-15 Benzene 1.6 ug/m3 Total/NA12.4 TO-15 Dichlorodifluoromethane 2.5 ug/m3 Total/NA12.5 TO-15 Toluene 19 ug/m3 Total/NA120TO-15 Nitrogen 0.50 % v/v Total/NA179D1946 Oxygen + Argon 0.50 % v/v Total/NA121D1946 Nitrogen 0.50 % v/v Total/NA179Fixed Gas Norm Oxygen + Argon 0.50 % v/v Total/NA121Fixed Gas Norm Client Sample ID: SVP3-10 Lab Sample ID: 570-19024-8 2-Butanone RL 4.4 ug/m3 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA19.6 TO-15 Acetone 12 ug/m3 Total/NA146TO-15 Benzene 1.6 ug/m3 Total/NA13.7 TO-15 Eurofins Calscience LLC This Detection Summary does not include radiochemical test results. Page 6 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Detection Summary Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Client Sample ID: SVP3-10 (Continued)Lab Sample ID: 570-19024-8 Ethylbenzene RL 2.2 ug/m3 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA13.5 TO-15 o-Xylene 2.2 ug/m3 Total/NA14.1 TO-15 m,p-Xylene 8.7 ug/m3 Total/NA111TO-15 Toluene 19 ug/m3 Total/NA128TO-15 Nitrogen 0.50 % v/v Total/NA178D1946 Oxygen + Argon 0.50 % v/v Total/NA121D1946 Nitrogen 0.50 % v/v Total/NA179Fixed Gas Norm Oxygen + Argon 0.50 % v/v Total/NA121Fixed Gas Norm Client Sample ID: SVP3-19.5 Lab Sample ID: 570-19024-9 2-Butanone RL 4.4 ug/m3 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA110TO-15 Acetone 12 ug/m3 Total/NA148TO-15 Benzene 1.6 ug/m3 Total/NA120TO-15 Bromodichloromethane 3.4 ug/m3 Total/NA15.3 TO-15 Carbon disulfide 16 ug/m3 Total/NA144TO-15 Chloromethane 1.0 ug/m3 Total/NA17.0 TO-15 Dichlorodifluoromethane 2.5 ug/m3 Total/NA12.5 TO-15 Ethylbenzene 2.2 ug/m3 Total/NA17.8 TO-15 o-Xylene 2.2 ug/m3 Total/NA17.0 TO-15 m,p-Xylene 8.7 ug/m3 Total/NA120TO-15 Toluene 19 ug/m3 Total/NA153TO-15 Nitrogen 0.50 % v/v Total/NA177D1946 Oxygen + Argon 0.50 % v/v Total/NA121D1946 Nitrogen 0.50 % v/v Total/NA178Fixed Gas Norm Oxygen + Argon 0.50 % v/v Total/NA122Fixed Gas Norm Client Sample ID: SVP4-5 Lab Sample ID: 570-19024-10 2-Butanone RL 4.4 ug/m3 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA112TO-15 Acetone 12 ug/m3 Total/NA145TO-15 Benzene 1.6 ug/m3 Total/NA12.3 TO-15 Chloroform 2.4 ug/m3 Total/NA12.8 TO-15 Dichlorodifluoromethane 2.5 ug/m3 Total/NA113TO-15 o-Xylene 2.2 ug/m3 Total/NA12.3 TO-15 Toluene 19 ug/m3 Total/NA124TO-15 Carbon dioxide 0.50 % v/v Total/NA11.1 D1946 Nitrogen 0.50 % v/v Total/NA177D1946 Oxygen + Argon 0.50 % v/v Total/NA121D1946 Carbon dioxide 0.50 % v/v Total/NA11.1 Fixed Gas Norm Nitrogen 0.50 % v/v Total/NA177Fixed Gas Norm Oxygen + Argon 0.50 % v/v Total/NA122Fixed Gas Norm Client Sample ID: SVP4-10 Lab Sample ID: 570-19024-11 2-Butanone RL 4.4 ug/m3 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA114TO-15 4-Ethyltoluene 2.5 ug/m3 Total/NA136TO-15 Acetone 12 ug/m3 Total/NA162TO-15 Benzene 1.6 ug/m3 Total/NA12.5 TO-15 Eurofins Calscience LLC This Detection Summary does not include radiochemical test results. Page 7 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Detection Summary Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Client Sample ID: SVP4-10 (Continued)Lab Sample ID: 570-19024-11 Dichlorodifluoromethane RL 2.5 ug/m3 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA18.5 TO-15 Ethylbenzene 2.2 ug/m3 Total/NA12.8 TO-15 Toluene 19 ug/m3 Total/NA1250TO-15 Carbon dioxide 0.50 % v/v Total/NA10.82 D1946 Nitrogen 0.50 % v/v Total/NA178D1946 Oxygen + Argon 0.50 % v/v Total/NA122D1946 Carbon dioxide 0.50 % v/v Total/NA10.82 Fixed Gas Norm Nitrogen 0.50 % v/v Total/NA177Fixed Gas Norm Oxygen + Argon 0.50 % v/v Total/NA122Fixed Gas Norm Client Sample ID: SVP4-19.5 Lab Sample ID: 570-19024-12 2-Butanone RL 4.4 ug/m3 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA110TO-15 Acetone 12 ug/m3 Total/NA157TO-15 Benzene 1.6 ug/m3 Total/NA19.4 TO-15 Carbon disulfide 16 ug/m3 Total/NA125TO-15 Chloroform 2.4 ug/m3 Total/NA13.2 TO-15 Dichlorodifluoromethane 2.5 ug/m3 Total/NA114TO-15 Ethylbenzene 2.2 ug/m3 Total/NA13.1 TO-15 o-Xylene 2.2 ug/m3 Total/NA12.7 TO-15 Toluene 19 ug/m3 Total/NA127TO-15 Carbon dioxide 0.50 % v/v Total/NA11.3 D1946 Nitrogen 0.50 % v/v Total/NA176D1946 Oxygen + Argon 0.50 % v/v Total/NA121D1946 Carbon dioxide 0.50 % v/v Total/NA11.3 Fixed Gas Norm Nitrogen 0.50 % v/v Total/NA178Fixed Gas Norm Oxygen + Argon 0.50 % v/v Total/NA121Fixed Gas Norm Client Sample ID: SVP5-5 Lab Sample ID: 570-19024-13 2-Butanone RL 4.4 ug/m3 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA114TO-15 Acetone 12 ug/m3 Total/NA148TO-15 Dichlorodifluoromethane 2.5 ug/m3 Total/NA15.5 TO-15 Carbon dioxide 0.50 % v/v Total/NA10.67 D1946 Nitrogen 0.50 % v/v Total/NA176D1946 Oxygen + Argon 0.50 % v/v Total/NA122D1946 Carbon dioxide 0.50 % v/v Total/NA10.68 Fixed Gas Norm Nitrogen 0.50 % v/v Total/NA177Fixed Gas Norm Oxygen + Argon 0.50 % v/v Total/NA122Fixed Gas Norm Client Sample ID: SVP5-10 Lab Sample ID: 570-19024-14 2-Butanone RL 4.4 ug/m3 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA114TO-15 Acetone 12 ug/m3 Total/NA150TO-15 Dichlorodifluoromethane 2.5 ug/m3 Total/NA17.0 TO-15 o-Xylene 2.2 ug/m3 Total/NA12.2 TO-15 Toluene 19 ug/m3 Total/NA120TO-15 Nitrogen 0.50 % v/v Total/NA177D1946 Oxygen + Argon 0.50 % v/v Total/NA123D1946 Eurofins Calscience LLC This Detection Summary does not include radiochemical test results. Page 8 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Detection Summary Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Client Sample ID: SVP5-10 (Continued)Lab Sample ID: 570-19024-14 Nitrogen RL 0.50 % v/v Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA177Fixed Gas Norm Oxygen + Argon 0.50 % v/v Total/NA123Fixed Gas Norm Client Sample ID: SVP5-15 Lab Sample ID: 570-19024-15 2-Butanone RL 4.4 ug/m3 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA113TO-15 Acetone 12 ug/m3 Total/NA142TO-15 Dichlorodifluoromethane 2.5 ug/m3 Total/NA16.8 TO-15 Nitrogen 0.50 % v/v Total/NA176D1946 Oxygen + Argon 0.50 % v/v Total/NA122D1946 Nitrogen 0.50 % v/v Total/NA177Fixed Gas Norm Oxygen + Argon 0.50 % v/v Total/NA123Fixed Gas Norm Eurofins Calscience LLC This Detection Summary does not include radiochemical test results. Page 9 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Method: TO-15 - Volatile Organic Compounds in Ambient Air Lab Sample ID: 570-19024-1Client Sample ID: SVP1-5 Matrix: AirDate Collected: 01/27/20 14:05 Date Received: 01/27/20 19:10 RL 1,1,1-Trichloroethane ND 2.7 ug/m3 01/28/20 20:19 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 6.9 ug/m3 01/28/20 20:19 11,1,2,2-Tetrachloroethane ND 11 ug/m3 01/28/20 20:19 11,1,2-Trichloro-1,2,2-trifluoroethane ND 2.7 ug/m3 01/28/20 20:19 11,1,2-Trichloroethane ND 2.0 ug/m3 01/28/20 20:19 11,1-Dichloroethane ND 2.0 ug/m3 01/28/20 20:19 11,1-Dichloroethene ND 5.4 ug/m3 01/28/20 20:19 11,1-Difluoroethane ND 15 ug/m3 01/28/20 20:19 11,2,4-Trichlorobenzene ND 7.4 ug/m3 01/28/20 20:19 11,2,4-Trimethylbenzene ND 14 ug/m3 01/28/20 20:19 11,2-Dibromo-3-Chloropropane ND 3.8 ug/m3 01/28/20 20:19 11,2-Dibromoethane ND 3.0 ug/m3 01/28/20 20:19 11,2-Dichlorobenzene ND 2.0 ug/m3 01/28/20 20:19 11,2-Dichloroethane ND 2.3 ug/m3 01/28/20 20:19 11,2-Dichloropropane ND 2.5 ug/m3 01/28/20 20:19 11,3,5-Trimethylbenzene ND 3.0 ug/m3 01/28/20 20:19 11,3-Dichlorobenzene ND 3.0 ug/m3 01/28/20 20:19 11,4-Dichlorobenzene ND 4.4 ug/m3 01/28/20 20:19 12-Butanone 16 6.1 ug/m3 01/28/20 20:19 12-Hexanone ND 2.5 ug/m3 01/28/20 20:19 14-Ethyltoluene ND 6.1 ug/m3 01/28/20 20:19 14-Methyl-2-pentanone ND 12 ug/m3 01/28/20 20:19 1Acetone77 1.6 ug/m3 01/28/20 20:19 1Benzene4.2 7.8 ug/m3 01/28/20 20:19 1Benzyl chloride ND 3.4 ug/m3 01/28/20 20:19 1BromodichloromethaneND 5.2 ug/m3 01/28/20 20:19 1BromoformND 1.9 ug/m3 01/28/20 20:19 1BromomethaneND 2.0 ug/m3 01/28/20 20:19 1cis-1,2-Dichloroethene ND 2.3 ug/m3 01/28/20 20:19 1cis-1,3-Dichloropropene ND 16 ug/m3 01/28/20 20:19 1Carbon disulfide 16 3.1 ug/m3 01/28/20 20:19 1Carbon tetrachloride ND 2.3 ug/m3 01/28/20 20:19 1ChlorobenzeneND 1.3 ug/m3 01/28/20 20:19 1ChloroethaneND 2.4 ug/m3 01/28/20 20:19 1ChloroformND 1.0 ug/m3 01/28/20 20:19 1ChloromethaneND 4.3 ug/m3 01/28/20 20:19 1DibromochloromethaneND 2.5 ug/m3 01/28/20 20:19 1Dichlorodifluoromethane2.8 14 ug/m3 01/28/20 20:19 1DichlorotetrafluoroethaneND 2.2 ug/m3 01/28/20 20:19 1Ethylbenzene2.8 16 ug/m3 01/28/20 20:19 1Hexachloro-1,3-butadiene ND 120 ug/m3 01/28/20 20:19 1IsopropanolND 17 ug/m3 01/28/20 20:19 1Methylene Chloride ND 7.2 ug/m3 01/28/20 20:19 1Methyl-t-Butyl Ether (MTBE)ND 8.2 ug/m3 01/28/20 20:19 1n-Butylbenzene ND 2.2 ug/m3 01/28/20 20:19 1o-Xylene 3.5 8.7 ug/m3 01/28/20 20:19 1m,p-Xylene ND 8.2 ug/m3 01/28/20 20:19 1sec-Butylbenzene ND 6.4 ug/m3 01/28/20 20:19 1StyreneND 2.0 ug/m3 01/28/20 20:19 1trans-1,2-Dichloroethene ND Eurofins Calscience LLC Page 10 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Method: TO-15 - Volatile Organic Compounds in Ambient Air (Continued) Lab Sample ID: 570-19024-1Client Sample ID: SVP1-5 Matrix: AirDate Collected: 01/27/20 14:05 Date Received: 01/27/20 19:10 RL trans-1,3-Dichloropropene ND 4.5 ug/m3 01/28/20 20:19 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 8.2 ug/m3 01/28/20 20:19 1tert-Butylbenzene ND 3.4 ug/m3 01/28/20 20:19 1TetrachloroetheneND 19 ug/m3 01/28/20 20:19 1Toluene26 2.7 ug/m3 01/28/20 20:19 1TrichloroetheneND 5.6 ug/m3 01/28/20 20:19 1TrichlorofluoromethaneND 7.0 ug/m3 01/28/20 20:19 1Vinyl acetate ND 1.3 ug/m3 01/28/20 20:19 1Vinyl chloride 1.8 1,2-Dichloroethane-d4 (Surr)114 47 -137 01/28/20 20:19 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery 4-Bromofluorobenzene (Surr)101 01/28/20 20:19 157-129 Toluene-d8 (Surr)102 01/28/20 20:19 178-156 Lab Sample ID: 570-19024-2Client Sample ID: SVP1-10 Matrix: AirDate Collected: 01/27/20 14:25 Date Received: 01/27/20 19:10 RL 1,1,1-Trichloroethane ND 2.7 ug/m3 01/28/20 17:53 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 6.9 ug/m3 01/28/20 17:53 11,1,2,2-Tetrachloroethane ND 11 ug/m3 01/28/20 17:53 11,1,2-Trichloro-1,2,2-trifluoroethane ND 2.7 ug/m3 01/28/20 17:53 11,1,2-Trichloroethane ND 2.0 ug/m3 01/28/20 17:53 11,1-Dichloroethane ND 2.0 ug/m3 01/28/20 17:53 11,1-Dichloroethene ND 5.4 ug/m3 01/28/20 17:53 11,1-Difluoroethane ND 15 ug/m3 01/28/20 17:53 11,2,4-Trichlorobenzene ND 7.4 ug/m3 01/28/20 17:53 11,2,4-Trimethylbenzene ND 14 ug/m3 01/28/20 17:53 11,2-Dibromo-3-Chloropropane ND 3.8 ug/m3 01/28/20 17:53 11,2-Dibromoethane ND 3.0 ug/m3 01/28/20 17:53 11,2-Dichlorobenzene ND 2.0 ug/m3 01/28/20 17:53 11,2-Dichloroethane ND 2.3 ug/m3 01/28/20 17:53 11,2-Dichloropropane ND 2.5 ug/m3 01/28/20 17:53 11,3,5-Trimethylbenzene ND 3.0 ug/m3 01/28/20 17:53 11,3-Dichlorobenzene ND 3.0 ug/m3 01/28/20 17:53 11,4-Dichlorobenzene ND 4.4 ug/m3 01/28/20 17:53 12-Butanone 19 6.1 ug/m3 01/28/20 17:53 12-Hexanone ND 2.5 ug/m3 01/28/20 17:53 14-Ethyltoluene ND 6.1 ug/m3 01/28/20 17:53 14-Methyl-2-pentanone ND 12 ug/m3 01/28/20 17:53 1Acetone66 1.6 ug/m3 01/28/20 17:53 1Benzene5.8 7.8 ug/m3 01/28/20 17:53 1Benzyl chloride ND 3.4 ug/m3 01/28/20 17:53 1BromodichloromethaneND 5.2 ug/m3 01/28/20 17:53 1BromoformND 1.9 ug/m3 01/28/20 17:53 1BromomethaneND 2.0 ug/m3 01/28/20 17:53 1cis-1,2-Dichloroethene ND 2.3 ug/m3 01/28/20 17:53 1cis-1,3-Dichloropropene ND 16 ug/m3 01/28/20 17:53 1Carbon disulfide 26 3.1 ug/m3 01/28/20 17:53 1Carbon tetrachloride ND 2.3 ug/m3 01/28/20 17:53 1ChlorobenzeneND Eurofins Calscience LLC Page 11 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Method: TO-15 - Volatile Organic Compounds in Ambient Air (Continued) Lab Sample ID: 570-19024-2Client Sample ID: SVP1-10 Matrix: AirDate Collected: 01/27/20 14:25 Date Received: 01/27/20 19:10 RL Chloroethane ND 1.3 ug/m3 01/28/20 17:53 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 2.4 ug/m3 01/28/20 17:53 1ChloroformND 1.0 ug/m3 01/28/20 17:53 1Chloromethane1.1 4.3 ug/m3 01/28/20 17:53 1DibromochloromethaneND 2.5 ug/m3 01/28/20 17:53 1Dichlorodifluoromethane7.4 14 ug/m3 01/28/20 17:53 1DichlorotetrafluoroethaneND 2.2 ug/m3 01/28/20 17:53 1Ethylbenzene3.2 16 ug/m3 01/28/20 17:53 1Hexachloro-1,3-butadiene ND 120 ug/m3 01/28/20 17:53 1IsopropanolND 17 ug/m3 01/28/20 17:53 1Methylene Chloride ND 7.2 ug/m3 01/28/20 17:53 1Methyl-t-Butyl Ether (MTBE)ND 8.2 ug/m3 01/28/20 17:53 1n-Butylbenzene ND 2.2 ug/m3 01/28/20 17:53 1o-Xylene 3.5 8.7 ug/m3 01/28/20 17:53 1m,p-Xylene ND 8.2 ug/m3 01/28/20 17:53 1sec-Butylbenzene ND 6.4 ug/m3 01/28/20 17:53 1StyreneND 2.0 ug/m3 01/28/20 17:53 1trans-1,2-Dichloroethene ND 4.5 ug/m3 01/28/20 17:53 1trans-1,3-Dichloropropene ND 8.2 ug/m3 01/28/20 17:53 1tert-Butylbenzene ND 3.4 ug/m3 01/28/20 17:53 1TetrachloroetheneND 19 ug/m3 01/28/20 17:53 1Toluene27 2.7 ug/m3 01/28/20 17:53 1TrichloroetheneND 5.6 ug/m3 01/28/20 17:53 1TrichlorofluoromethaneND 7.0 ug/m3 01/28/20 17:53 1Vinyl acetate ND 1.3 ug/m3 01/28/20 17:53 1Vinyl chloride ND 1,2-Dichloroethane-d4 (Surr)118 47 -137 01/28/20 17:53 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery 4-Bromofluorobenzene (Surr)100 01/28/20 17:53 157-129 Toluene-d8 (Surr)101 01/28/20 17:53 178-156 Lab Sample ID: 570-19024-3Client Sample ID: SVP1-19.5 Matrix: AirDate Collected: 01/27/20 14:41 Date Received: 01/27/20 19:10 RL 1,1,1-Trichloroethane ND 2.7 ug/m3 01/28/20 21:59 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 6.9 ug/m3 01/28/20 21:59 11,1,2,2-Tetrachloroethane ND 11 ug/m3 01/28/20 21:59 11,1,2-Trichloro-1,2,2-trifluoroethane ND 2.7 ug/m3 01/28/20 21:59 11,1,2-Trichloroethane ND 2.0 ug/m3 01/28/20 21:59 11,1-Dichloroethane ND 2.0 ug/m3 01/28/20 21:59 11,1-Dichloroethene ND 5.4 ug/m3 01/28/20 21:59 11,1-Difluoroethane ND 15 ug/m3 01/28/20 21:59 11,2,4-Trichlorobenzene ND 7.4 ug/m3 01/28/20 21:59 11,2,4-Trimethylbenzene ND 14 ug/m3 01/28/20 21:59 11,2-Dibromo-3-Chloropropane ND 3.8 ug/m3 01/28/20 21:59 11,2-Dibromoethane ND 3.0 ug/m3 01/28/20 21:59 11,2-Dichlorobenzene ND 2.0 ug/m3 01/28/20 21:59 11,2-Dichloroethane ND 2.3 ug/m3 01/28/20 21:59 11,2-Dichloropropane ND 2.5 ug/m3 01/28/20 21:59 11,3,5-Trimethylbenzene ND Eurofins Calscience LLC Page 12 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Method: TO-15 - Volatile Organic Compounds in Ambient Air (Continued) Lab Sample ID: 570-19024-3Client Sample ID: SVP1-19.5 Matrix: AirDate Collected: 01/27/20 14:41 Date Received: 01/27/20 19:10 RL 1,3-Dichlorobenzene ND 3.0 ug/m3 01/28/20 21:59 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 3.0 ug/m3 01/28/20 21:59 11,4-Dichlorobenzene ND 4.4 ug/m3 01/28/20 21:59 12-Butanone 14 6.1 ug/m3 01/28/20 21:59 12-Hexanone ND 2.5 ug/m3 01/28/20 21:59 14-Ethyltoluene ND 6.1 ug/m3 01/28/20 21:59 14-Methyl-2-pentanone ND 12 ug/m3 01/28/20 21:59 1Acetone48 1.6 ug/m3 01/28/20 21:59 1Benzene3.9 7.8 ug/m3 01/28/20 21:59 1Benzyl chloride ND 3.4 ug/m3 01/28/20 21:59 1BromodichloromethaneND 5.2 ug/m3 01/28/20 21:59 1BromoformND 1.9 ug/m3 01/28/20 21:59 1BromomethaneND 2.0 ug/m3 01/28/20 21:59 1cis-1,2-Dichloroethene ND 2.3 ug/m3 01/28/20 21:59 1cis-1,3-Dichloropropene ND 16 ug/m3 01/28/20 21:59 1Carbon disulfide ND 3.1 ug/m3 01/28/20 21:59 1Carbon tetrachloride ND 2.3 ug/m3 01/28/20 21:59 1ChlorobenzeneND 1.3 ug/m3 01/28/20 21:59 1ChloroethaneND 2.4 ug/m3 01/28/20 21:59 1ChloroformND 1.0 ug/m3 01/28/20 21:59 1ChloromethaneND 4.3 ug/m3 01/28/20 21:59 1DibromochloromethaneND 2.5 ug/m3 01/28/20 21:59 1Dichlorodifluoromethane10 14 ug/m3 01/28/20 21:59 1DichlorotetrafluoroethaneND 2.2 ug/m3 01/28/20 21:59 1EthylbenzeneND 16 ug/m3 01/28/20 21:59 1Hexachloro-1,3-butadiene ND 120 ug/m3 01/28/20 21:59 1IsopropanolND 17 ug/m3 01/28/20 21:59 1Methylene Chloride ND 7.2 ug/m3 01/28/20 21:59 1Methyl-t-Butyl Ether (MTBE)ND 8.2 ug/m3 01/28/20 21:59 1n-Butylbenzene ND 2.2 ug/m3 01/28/20 21:59 1o-Xylene ND 8.7 ug/m3 01/28/20 21:59 1m,p-Xylene ND 8.2 ug/m3 01/28/20 21:59 1sec-Butylbenzene ND 6.4 ug/m3 01/28/20 21:59 1StyreneND 2.0 ug/m3 01/28/20 21:59 1trans-1,2-Dichloroethene ND 4.5 ug/m3 01/28/20 21:59 1trans-1,3-Dichloropropene ND 8.2 ug/m3 01/28/20 21:59 1tert-Butylbenzene ND 3.4 ug/m3 01/28/20 21:59 1Tetrachloroethene3.5 19 ug/m3 01/28/20 21:59 1Toluene22 2.7 ug/m3 01/28/20 21:59 1TrichloroetheneND 5.6 ug/m3 01/28/20 21:59 1TrichlorofluoromethaneND 7.0 ug/m3 01/28/20 21:59 1Vinyl acetate ND 1.3 ug/m3 01/28/20 21:59 1Vinyl chloride ND 1,2-Dichloroethane-d4 (Surr)111 47 -137 01/28/20 21:59 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery 4-Bromofluorobenzene (Surr)100 01/28/20 21:59 157-129 Toluene-d8 (Surr)100 01/28/20 21:59 178-156 Eurofins Calscience LLC Page 13 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Method: TO-15 - Volatile Organic Compounds in Ambient Air Lab Sample ID: 570-19024-4Client Sample ID: SVP2-5 Matrix: AirDate Collected: 01/27/20 12:22 Date Received: 01/27/20 19:10 RL 1,1,1-Trichloroethane ND 2.7 ug/m3 01/28/20 22:51 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 6.9 ug/m3 01/28/20 22:51 11,1,2,2-Tetrachloroethane ND 11 ug/m3 01/28/20 22:51 11,1,2-Trichloro-1,2,2-trifluoroethane ND 2.7 ug/m3 01/28/20 22:51 11,1,2-Trichloroethane ND 2.0 ug/m3 01/28/20 22:51 11,1-Dichloroethane ND 2.0 ug/m3 01/28/20 22:51 11,1-Dichloroethene ND 5.4 ug/m3 01/28/20 22:51 11,1-Difluoroethane ND 15 ug/m3 01/28/20 22:51 11,2,4-Trichlorobenzene ND 7.4 ug/m3 01/28/20 22:51 11,2,4-Trimethylbenzene ND 14 ug/m3 01/28/20 22:51 11,2-Dibromo-3-Chloropropane ND 3.8 ug/m3 01/28/20 22:51 11,2-Dibromoethane ND 3.0 ug/m3 01/28/20 22:51 11,2-Dichlorobenzene ND 2.0 ug/m3 01/28/20 22:51 11,2-Dichloroethane ND 2.3 ug/m3 01/28/20 22:51 11,2-Dichloropropane ND 2.5 ug/m3 01/28/20 22:51 11,3,5-Trimethylbenzene 2.9 3.0 ug/m3 01/28/20 22:51 11,3-Dichlorobenzene ND 3.0 ug/m3 01/28/20 22:51 11,4-Dichlorobenzene ND 4.4 ug/m3 01/28/20 22:51 12-Butanone 11 6.1 ug/m3 01/28/20 22:51 12-Hexanone ND 2.5 ug/m3 01/28/20 22:51 14-Ethyltoluene ND 6.1 ug/m3 01/28/20 22:51 14-Methyl-2-pentanone ND 12 ug/m3 01/28/20 22:51 1Acetone48 1.6 ug/m3 01/28/20 22:51 1Benzene2.3 7.8 ug/m3 01/28/20 22:51 1Benzyl chloride ND 3.4 ug/m3 01/28/20 22:51 1BromodichloromethaneND 5.2 ug/m3 01/28/20 22:51 1BromoformND 1.9 ug/m3 01/28/20 22:51 1BromomethaneND 2.0 ug/m3 01/28/20 22:51 1cis-1,2-Dichloroethene ND 2.3 ug/m3 01/28/20 22:51 1cis-1,3-Dichloropropene ND 16 ug/m3 01/28/20 22:51 1Carbon disulfide ND 3.1 ug/m3 01/28/20 22:51 1Carbon tetrachloride ND 2.3 ug/m3 01/28/20 22:51 1ChlorobenzeneND 1.3 ug/m3 01/28/20 22:51 1ChloroethaneND 2.4 ug/m3 01/28/20 22:51 1Chloroform3.7 1.0 ug/m3 01/28/20 22:51 1ChloromethaneND 4.3 ug/m3 01/28/20 22:51 1DibromochloromethaneND 2.5 ug/m3 01/28/20 22:51 1Dichlorodifluoromethane10 14 ug/m3 01/28/20 22:51 1DichlorotetrafluoroethaneND 2.2 ug/m3 01/28/20 22:51 1Ethylbenzene4.8 16 ug/m3 01/28/20 22:51 1Hexachloro-1,3-butadiene ND 120 ug/m3 01/28/20 22:51 1IsopropanolND 17 ug/m3 01/28/20 22:51 1Methylene Chloride ND 7.2 ug/m3 01/28/20 22:51 1Methyl-t-Butyl Ether (MTBE)ND 8.2 ug/m3 01/28/20 22:51 1n-Butylbenzene ND 2.2 ug/m3 01/28/20 22:51 1o-Xylene 6.5 8.7 ug/m3 01/28/20 22:51 1m,p-Xylene 18 8.2 ug/m3 01/28/20 22:51 1sec-Butylbenzene ND 6.4 ug/m3 01/28/20 22:51 1StyreneND 2.0 ug/m3 01/28/20 22:51 1trans-1,2-Dichloroethene ND Eurofins Calscience LLC Page 14 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Method: TO-15 - Volatile Organic Compounds in Ambient Air (Continued) Lab Sample ID: 570-19024-4Client Sample ID: SVP2-5 Matrix: AirDate Collected: 01/27/20 12:22 Date Received: 01/27/20 19:10 RL trans-1,3-Dichloropropene ND 4.5 ug/m3 01/28/20 22:51 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 8.2 ug/m3 01/28/20 22:51 1tert-Butylbenzene ND 3.4 ug/m3 01/28/20 22:51 1TetrachloroetheneND 19 ug/m3 01/28/20 22:51 1Toluene28 2.7 ug/m3 01/28/20 22:51 1TrichloroetheneND 5.6 ug/m3 01/28/20 22:51 1TrichlorofluoromethaneND 7.0 ug/m3 01/28/20 22:51 1Vinyl acetate ND 1.3 ug/m3 01/28/20 22:51 1Vinyl chloride ND 1,2-Dichloroethane-d4 (Surr)111 47 -137 01/28/20 22:51 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery 4-Bromofluorobenzene (Surr)102 01/28/20 22:51 157-129 Toluene-d8 (Surr)98 01/28/20 22:51 178-156 Lab Sample ID: 570-19024-5Client Sample ID: SVP2-10 Matrix: AirDate Collected: 01/27/20 13:14 Date Received: 01/27/20 19:10 RL 1,1,1-Trichloroethane ND 2.7 ug/m3 01/28/20 23:43 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 6.9 ug/m3 01/28/20 23:43 11,1,2,2-Tetrachloroethane ND 11 ug/m3 01/28/20 23:43 11,1,2-Trichloro-1,2,2-trifluoroethane ND 2.7 ug/m3 01/28/20 23:43 11,1,2-Trichloroethane ND 2.0 ug/m3 01/28/20 23:43 11,1-Dichloroethane ND 2.0 ug/m3 01/28/20 23:43 11,1-Dichloroethene ND 5.4 ug/m3 01/28/20 23:43 11,1-Difluoroethane ND 15 ug/m3 01/28/20 23:43 11,2,4-Trichlorobenzene ND 7.4 ug/m3 01/28/20 23:43 11,2,4-Trimethylbenzene ND 14 ug/m3 01/28/20 23:43 11,2-Dibromo-3-Chloropropane ND 3.8 ug/m3 01/28/20 23:43 11,2-Dibromoethane ND 3.0 ug/m3 01/28/20 23:43 11,2-Dichlorobenzene ND 2.0 ug/m3 01/28/20 23:43 11,2-Dichloroethane ND 2.3 ug/m3 01/28/20 23:43 11,2-Dichloropropane ND 2.5 ug/m3 01/28/20 23:43 11,3,5-Trimethylbenzene ND 3.0 ug/m3 01/28/20 23:43 11,3-Dichlorobenzene ND 3.0 ug/m3 01/28/20 23:43 11,4-Dichlorobenzene ND 4.4 ug/m3 01/28/20 23:43 12-Butanone 10 6.1 ug/m3 01/28/20 23:43 12-Hexanone ND 2.5 ug/m3 01/28/20 23:43 14-Ethyltoluene ND 6.1 ug/m3 01/28/20 23:43 14-Methyl-2-pentanone ND 12 ug/m3 01/28/20 23:43 1Acetone37 1.6 ug/m3 01/28/20 23:43 1BenzeneND 7.8 ug/m3 01/28/20 23:43 1Benzyl chloride ND 3.4 ug/m3 01/28/20 23:43 1BromodichloromethaneND 5.2 ug/m3 01/28/20 23:43 1BromoformND 1.9 ug/m3 01/28/20 23:43 1BromomethaneND 2.0 ug/m3 01/28/20 23:43 1cis-1,2-Dichloroethene ND 2.3 ug/m3 01/28/20 23:43 1cis-1,3-Dichloropropene ND 16 ug/m3 01/28/20 23:43 1Carbon disulfide ND 3.1 ug/m3 01/28/20 23:43 1Carbon tetrachloride ND 2.3 ug/m3 01/28/20 23:43 1ChlorobenzeneND Eurofins Calscience LLC Page 15 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Method: TO-15 - Volatile Organic Compounds in Ambient Air (Continued) Lab Sample ID: 570-19024-5Client Sample ID: SVP2-10 Matrix: AirDate Collected: 01/27/20 13:14 Date Received: 01/27/20 19:10 RL Chloroethane ND 1.3 ug/m3 01/28/20 23:43 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 2.4 ug/m3 01/28/20 23:43 1Chloroform2.5 1.0 ug/m3 01/28/20 23:43 1ChloromethaneND 4.3 ug/m3 01/28/20 23:43 1DibromochloromethaneND 2.5 ug/m3 01/28/20 23:43 1Dichlorodifluoromethane11 14 ug/m3 01/28/20 23:43 1DichlorotetrafluoroethaneND 2.2 ug/m3 01/28/20 23:43 1EthylbenzeneND 16 ug/m3 01/28/20 23:43 1Hexachloro-1,3-butadiene ND 120 ug/m3 01/28/20 23:43 1IsopropanolND 17 ug/m3 01/28/20 23:43 1Methylene Chloride ND 7.2 ug/m3 01/28/20 23:43 1Methyl-t-Butyl Ether (MTBE)ND 8.2 ug/m3 01/28/20 23:43 1n-Butylbenzene ND 2.2 ug/m3 01/28/20 23:43 1o-Xylene ND 8.7 ug/m3 01/28/20 23:43 1m,p-Xylene ND 8.2 ug/m3 01/28/20 23:43 1sec-Butylbenzene ND 6.4 ug/m3 01/28/20 23:43 1StyreneND 2.0 ug/m3 01/28/20 23:43 1trans-1,2-Dichloroethene ND 4.5 ug/m3 01/28/20 23:43 1trans-1,3-Dichloropropene ND 8.2 ug/m3 01/28/20 23:43 1tert-Butylbenzene ND 3.4 ug/m3 01/28/20 23:43 1TetrachloroetheneND 19 ug/m3 01/28/20 23:43 1TolueneND 2.7 ug/m3 01/28/20 23:43 1TrichloroetheneND 5.6 ug/m3 01/28/20 23:43 1TrichlorofluoromethaneND 7.0 ug/m3 01/28/20 23:43 1Vinyl acetate ND 1.3 ug/m3 01/28/20 23:43 1Vinyl chloride ND 1,2-Dichloroethane-d4 (Surr)110 47 -137 01/28/20 23:43 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery 4-Bromofluorobenzene (Surr)102 01/28/20 23:43 157-129 Toluene-d8 (Surr)100 01/28/20 23:43 178-156 Lab Sample ID: 570-19024-6Client Sample ID: SVP2-19.5 Matrix: AirDate Collected: 01/27/20 13:39 Date Received: 01/27/20 19:10 RL 1,1,1-Trichloroethane ND 2.7 ug/m3 01/29/20 00:35 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 6.9 ug/m3 01/29/20 00:35 11,1,2,2-Tetrachloroethane ND 11 ug/m3 01/29/20 00:35 11,1,2-Trichloro-1,2,2-trifluoroethane ND 2.7 ug/m3 01/29/20 00:35 11,1,2-Trichloroethane ND 2.0 ug/m3 01/29/20 00:35 11,1-Dichloroethane ND 2.0 ug/m3 01/29/20 00:35 11,1-Dichloroethene ND 5.4 ug/m3 01/29/20 00:35 11,1-Difluoroethane ND 15 ug/m3 01/29/20 00:35 11,2,4-Trichlorobenzene ND 7.4 ug/m3 01/29/20 00:35 11,2,4-Trimethylbenzene ND 14 ug/m3 01/29/20 00:35 11,2-Dibromo-3-Chloropropane ND 3.8 ug/m3 01/29/20 00:35 11,2-Dibromoethane ND 3.0 ug/m3 01/29/20 00:35 11,2-Dichlorobenzene ND 2.0 ug/m3 01/29/20 00:35 11,2-Dichloroethane ND 2.3 ug/m3 01/29/20 00:35 11,2-Dichloropropane ND 2.5 ug/m3 01/29/20 00:35 11,3,5-Trimethylbenzene ND Eurofins Calscience LLC Page 16 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Method: TO-15 - Volatile Organic Compounds in Ambient Air (Continued) Lab Sample ID: 570-19024-6Client Sample ID: SVP2-19.5 Matrix: AirDate Collected: 01/27/20 13:39 Date Received: 01/27/20 19:10 RL 1,3-Dichlorobenzene ND 3.0 ug/m3 01/29/20 00:35 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 3.0 ug/m3 01/29/20 00:35 11,4-Dichlorobenzene ND 4.4 ug/m3 01/29/20 00:35 12-Butanone 9.3 6.1 ug/m3 01/29/20 00:35 12-Hexanone ND 2.5 ug/m3 01/29/20 00:35 14-Ethyltoluene ND 6.1 ug/m3 01/29/20 00:35 14-Methyl-2-pentanone ND 12 ug/m3 01/29/20 00:35 1Acetone35 1.6 ug/m3 01/29/20 00:35 1BenzeneND 7.8 ug/m3 01/29/20 00:35 1Benzyl chloride ND 3.4 ug/m3 01/29/20 00:35 1BromodichloromethaneND 5.2 ug/m3 01/29/20 00:35 1BromoformND 1.9 ug/m3 01/29/20 00:35 1BromomethaneND 2.0 ug/m3 01/29/20 00:35 1cis-1,2-Dichloroethene ND 2.3 ug/m3 01/29/20 00:35 1cis-1,3-Dichloropropene ND 16 ug/m3 01/29/20 00:35 1Carbon disulfide ND 3.1 ug/m3 01/29/20 00:35 1Carbon tetrachloride ND 2.3 ug/m3 01/29/20 00:35 1ChlorobenzeneND 1.3 ug/m3 01/29/20 00:35 1ChloroethaneND 2.4 ug/m3 01/29/20 00:35 1ChloroformND 1.0 ug/m3 01/29/20 00:35 1ChloromethaneND 4.3 ug/m3 01/29/20 00:35 1DibromochloromethaneND 2.5 ug/m3 01/29/20 00:35 1Dichlorodifluoromethane12 14 ug/m3 01/29/20 00:35 1DichlorotetrafluoroethaneND 2.2 ug/m3 01/29/20 00:35 1EthylbenzeneND 16 ug/m3 01/29/20 00:35 1Hexachloro-1,3-butadiene ND 120 ug/m3 01/29/20 00:35 1IsopropanolND 17 ug/m3 01/29/20 00:35 1Methylene Chloride ND 7.2 ug/m3 01/29/20 00:35 1Methyl-t-Butyl Ether (MTBE)ND 8.2 ug/m3 01/29/20 00:35 1n-Butylbenzene ND 2.2 ug/m3 01/29/20 00:35 1o-Xylene ND 8.7 ug/m3 01/29/20 00:35 1m,p-Xylene ND 8.2 ug/m3 01/29/20 00:35 1sec-Butylbenzene ND 6.4 ug/m3 01/29/20 00:35 1StyreneND 2.0 ug/m3 01/29/20 00:35 1trans-1,2-Dichloroethene ND 4.5 ug/m3 01/29/20 00:35 1trans-1,3-Dichloropropene ND 8.2 ug/m3 01/29/20 00:35 1tert-Butylbenzene ND 3.4 ug/m3 01/29/20 00:35 1TetrachloroetheneND 19 ug/m3 01/29/20 00:35 1TolueneND 2.7 ug/m3 01/29/20 00:35 1TrichloroetheneND 5.6 ug/m3 01/29/20 00:35 1TrichlorofluoromethaneND 7.0 ug/m3 01/29/20 00:35 1Vinyl acetate ND 1.3 ug/m3 01/29/20 00:35 1Vinyl chloride ND 1,2-Dichloroethane-d4 (Surr)110 47 -137 01/29/20 00:35 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery 4-Bromofluorobenzene (Surr)100 01/29/20 00:35 157-129 Toluene-d8 (Surr)100 01/29/20 00:35 178-156 Eurofins Calscience LLC Page 17 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Method: TO-15 - Volatile Organic Compounds in Ambient Air Lab Sample ID: 570-19024-7Client Sample ID: SVP3-5 Matrix: AirDate Collected: 01/27/20 10:57 Date Received: 01/27/20 19:10 RL 1,1,1-Trichloroethane ND 2.7 ug/m3 01/29/20 02:14 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 6.9 ug/m3 01/29/20 02:14 11,1,2,2-Tetrachloroethane ND 11 ug/m3 01/29/20 02:14 11,1,2-Trichloro-1,2,2-trifluoroethane ND 2.7 ug/m3 01/29/20 02:14 11,1,2-Trichloroethane ND 2.0 ug/m3 01/29/20 02:14 11,1-Dichloroethane ND 2.0 ug/m3 01/29/20 02:14 11,1-Dichloroethene ND 5.4 ug/m3 01/29/20 02:14 11,1-Difluoroethane ND 15 ug/m3 01/29/20 02:14 11,2,4-Trichlorobenzene ND 7.4 ug/m3 01/29/20 02:14 11,2,4-Trimethylbenzene ND 14 ug/m3 01/29/20 02:14 11,2-Dibromo-3-Chloropropane ND 3.8 ug/m3 01/29/20 02:14 11,2-Dibromoethane ND 3.0 ug/m3 01/29/20 02:14 11,2-Dichlorobenzene ND 2.0 ug/m3 01/29/20 02:14 11,2-Dichloroethane ND 2.3 ug/m3 01/29/20 02:14 11,2-Dichloropropane ND 2.5 ug/m3 01/29/20 02:14 11,3,5-Trimethylbenzene ND 3.0 ug/m3 01/29/20 02:14 11,3-Dichlorobenzene ND 3.0 ug/m3 01/29/20 02:14 11,4-Dichlorobenzene ND 4.4 ug/m3 01/29/20 02:14 12-Butanone 8.0 6.1 ug/m3 01/29/20 02:14 12-Hexanone ND 2.5 ug/m3 01/29/20 02:14 14-Ethyltoluene ND 6.1 ug/m3 01/29/20 02:14 14-Methyl-2-pentanone ND 12 ug/m3 01/29/20 02:14 1Acetone47 1.6 ug/m3 01/29/20 02:14 1Benzene2.4 7.8 ug/m3 01/29/20 02:14 1Benzyl chloride ND 3.4 ug/m3 01/29/20 02:14 1BromodichloromethaneND 5.2 ug/m3 01/29/20 02:14 1BromoformND 1.9 ug/m3 01/29/20 02:14 1BromomethaneND 2.0 ug/m3 01/29/20 02:14 1cis-1,2-Dichloroethene ND 2.3 ug/m3 01/29/20 02:14 1cis-1,3-Dichloropropene ND 16 ug/m3 01/29/20 02:14 1Carbon disulfide ND 3.1 ug/m3 01/29/20 02:14 1Carbon tetrachloride ND 2.3 ug/m3 01/29/20 02:14 1ChlorobenzeneND 1.3 ug/m3 01/29/20 02:14 1ChloroethaneND 2.4 ug/m3 01/29/20 02:14 1ChloroformND 1.0 ug/m3 01/29/20 02:14 1ChloromethaneND 4.3 ug/m3 01/29/20 02:14 1DibromochloromethaneND 2.5 ug/m3 01/29/20 02:14 1Dichlorodifluoromethane2.5 14 ug/m3 01/29/20 02:14 1DichlorotetrafluoroethaneND 2.2 ug/m3 01/29/20 02:14 1EthylbenzeneND 16 ug/m3 01/29/20 02:14 1Hexachloro-1,3-butadiene ND 120 ug/m3 01/29/20 02:14 1IsopropanolND 17 ug/m3 01/29/20 02:14 1Methylene Chloride ND 7.2 ug/m3 01/29/20 02:14 1Methyl-t-Butyl Ether (MTBE)ND 8.2 ug/m3 01/29/20 02:14 1n-Butylbenzene ND 2.2 ug/m3 01/29/20 02:14 1o-Xylene ND 8.7 ug/m3 01/29/20 02:14 1m,p-Xylene ND 8.2 ug/m3 01/29/20 02:14 1sec-Butylbenzene ND 6.4 ug/m3 01/29/20 02:14 1StyreneND 2.0 ug/m3 01/29/20 02:14 1trans-1,2-Dichloroethene ND Eurofins Calscience LLC Page 18 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Method: TO-15 - Volatile Organic Compounds in Ambient Air (Continued) Lab Sample ID: 570-19024-7Client Sample ID: SVP3-5 Matrix: AirDate Collected: 01/27/20 10:57 Date Received: 01/27/20 19:10 RL trans-1,3-Dichloropropene ND 4.5 ug/m3 01/29/20 02:14 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 8.2 ug/m3 01/29/20 02:14 1tert-Butylbenzene ND 3.4 ug/m3 01/29/20 02:14 1TetrachloroetheneND 19 ug/m3 01/29/20 02:14 1Toluene20 2.7 ug/m3 01/29/20 02:14 1TrichloroetheneND 5.6 ug/m3 01/29/20 02:14 1TrichlorofluoromethaneND 7.0 ug/m3 01/29/20 02:14 1Vinyl acetate ND 1.3 ug/m3 01/29/20 02:14 1Vinyl chloride ND 1,2-Dichloroethane-d4 (Surr)112 47 -137 01/29/20 02:14 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery 4-Bromofluorobenzene (Surr)102 01/29/20 02:14 157-129 Toluene-d8 (Surr)103 01/29/20 02:14 178-156 Lab Sample ID: 570-19024-8Client Sample ID: SVP3-10 Matrix: AirDate Collected: 01/27/20 11:20 Date Received: 01/27/20 19:10 RL 1,1,1-Trichloroethane ND 2.7 ug/m3 01/29/20 03:05 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 6.9 ug/m3 01/29/20 03:05 11,1,2,2-Tetrachloroethane ND 11 ug/m3 01/29/20 03:05 11,1,2-Trichloro-1,2,2-trifluoroethane ND 2.7 ug/m3 01/29/20 03:05 11,1,2-Trichloroethane ND 2.0 ug/m3 01/29/20 03:05 11,1-Dichloroethane ND 2.0 ug/m3 01/29/20 03:05 11,1-Dichloroethene ND 5.4 ug/m3 01/29/20 03:05 11,1-Difluoroethane ND 15 ug/m3 01/29/20 03:05 11,2,4-Trichlorobenzene ND 7.4 ug/m3 01/29/20 03:05 11,2,4-Trimethylbenzene ND 14 ug/m3 01/29/20 03:05 11,2-Dibromo-3-Chloropropane ND 3.8 ug/m3 01/29/20 03:05 11,2-Dibromoethane ND 3.0 ug/m3 01/29/20 03:05 11,2-Dichlorobenzene ND 2.0 ug/m3 01/29/20 03:05 11,2-Dichloroethane ND 2.3 ug/m3 01/29/20 03:05 11,2-Dichloropropane ND 2.5 ug/m3 01/29/20 03:05 11,3,5-Trimethylbenzene ND 3.0 ug/m3 01/29/20 03:05 11,3-Dichlorobenzene ND 3.0 ug/m3 01/29/20 03:05 11,4-Dichlorobenzene ND 4.4 ug/m3 01/29/20 03:05 12-Butanone 9.6 6.1 ug/m3 01/29/20 03:05 12-Hexanone ND 2.5 ug/m3 01/29/20 03:05 14-Ethyltoluene ND 6.1 ug/m3 01/29/20 03:05 14-Methyl-2-pentanone ND 12 ug/m3 01/29/20 03:05 1Acetone46 1.6 ug/m3 01/29/20 03:05 1Benzene3.7 7.8 ug/m3 01/29/20 03:05 1Benzyl chloride ND 3.4 ug/m3 01/29/20 03:05 1BromodichloromethaneND 5.2 ug/m3 01/29/20 03:05 1BromoformND 1.9 ug/m3 01/29/20 03:05 1BromomethaneND 2.0 ug/m3 01/29/20 03:05 1cis-1,2-Dichloroethene ND 2.3 ug/m3 01/29/20 03:05 1cis-1,3-Dichloropropene ND 16 ug/m3 01/29/20 03:05 1Carbon disulfide ND 3.1 ug/m3 01/29/20 03:05 1Carbon tetrachloride ND 2.3 ug/m3 01/29/20 03:05 1ChlorobenzeneND Eurofins Calscience LLC Page 19 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Method: TO-15 - Volatile Organic Compounds in Ambient Air (Continued) Lab Sample ID: 570-19024-8Client Sample ID: SVP3-10 Matrix: AirDate Collected: 01/27/20 11:20 Date Received: 01/27/20 19:10 RL Chloroethane ND 1.3 ug/m3 01/29/20 03:05 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 2.4 ug/m3 01/29/20 03:05 1ChloroformND 1.0 ug/m3 01/29/20 03:05 1ChloromethaneND 4.3 ug/m3 01/29/20 03:05 1DibromochloromethaneND 2.5 ug/m3 01/29/20 03:05 1DichlorodifluoromethaneND 14 ug/m3 01/29/20 03:05 1DichlorotetrafluoroethaneND 2.2 ug/m3 01/29/20 03:05 1Ethylbenzene3.5 16 ug/m3 01/29/20 03:05 1Hexachloro-1,3-butadiene ND 120 ug/m3 01/29/20 03:05 1IsopropanolND 17 ug/m3 01/29/20 03:05 1Methylene Chloride ND 7.2 ug/m3 01/29/20 03:05 1Methyl-t-Butyl Ether (MTBE)ND 8.2 ug/m3 01/29/20 03:05 1n-Butylbenzene ND 2.2 ug/m3 01/29/20 03:05 1o-Xylene 4.1 8.7 ug/m3 01/29/20 03:05 1m,p-Xylene 11 8.2 ug/m3 01/29/20 03:05 1sec-Butylbenzene ND 6.4 ug/m3 01/29/20 03:05 1StyreneND 2.0 ug/m3 01/29/20 03:05 1trans-1,2-Dichloroethene ND 4.5 ug/m3 01/29/20 03:05 1trans-1,3-Dichloropropene ND 8.2 ug/m3 01/29/20 03:05 1tert-Butylbenzene ND 3.4 ug/m3 01/29/20 03:05 1TetrachloroetheneND 19 ug/m3 01/29/20 03:05 1Toluene28 2.7 ug/m3 01/29/20 03:05 1TrichloroetheneND 5.6 ug/m3 01/29/20 03:05 1TrichlorofluoromethaneND 7.0 ug/m3 01/29/20 03:05 1Vinyl acetate ND 1.3 ug/m3 01/29/20 03:05 1Vinyl chloride ND 1,2-Dichloroethane-d4 (Surr)110 47 -137 01/29/20 03:05 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery 4-Bromofluorobenzene (Surr)103 01/29/20 03:05 157-129 Toluene-d8 (Surr)99 01/29/20 03:05 178-156 Lab Sample ID: 570-19024-9Client Sample ID: SVP3-19.5 Matrix: AirDate Collected: 01/27/20 11:49 Date Received: 01/27/20 19:10 RL 1,1,1-Trichloroethane ND 2.7 ug/m3 01/29/20 04:51 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 6.9 ug/m3 01/29/20 04:51 11,1,2,2-Tetrachloroethane ND 11 ug/m3 01/29/20 04:51 11,1,2-Trichloro-1,2,2-trifluoroethane ND 2.7 ug/m3 01/29/20 04:51 11,1,2-Trichloroethane ND 2.0 ug/m3 01/29/20 04:51 11,1-Dichloroethane ND 2.0 ug/m3 01/29/20 04:51 11,1-Dichloroethene ND 5.4 ug/m3 01/29/20 04:51 11,1-Difluoroethane ND 15 ug/m3 01/29/20 04:51 11,2,4-Trichlorobenzene ND 7.4 ug/m3 01/29/20 04:51 11,2,4-Trimethylbenzene ND 14 ug/m3 01/29/20 04:51 11,2-Dibromo-3-Chloropropane ND 3.8 ug/m3 01/29/20 04:51 11,2-Dibromoethane ND 3.0 ug/m3 01/29/20 04:51 11,2-Dichlorobenzene ND 2.0 ug/m3 01/29/20 04:51 11,2-Dichloroethane ND 2.3 ug/m3 01/29/20 04:51 11,2-Dichloropropane ND 2.5 ug/m3 01/29/20 04:51 11,3,5-Trimethylbenzene ND Eurofins Calscience LLC Page 20 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Method: TO-15 - Volatile Organic Compounds in Ambient Air (Continued) Lab Sample ID: 570-19024-9Client Sample ID: SVP3-19.5 Matrix: AirDate Collected: 01/27/20 11:49 Date Received: 01/27/20 19:10 RL 1,3-Dichlorobenzene ND 3.0 ug/m3 01/29/20 04:51 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 3.0 ug/m3 01/29/20 04:51 11,4-Dichlorobenzene ND 4.4 ug/m3 01/29/20 04:51 12-Butanone 10 6.1 ug/m3 01/29/20 04:51 12-Hexanone ND 2.5 ug/m3 01/29/20 04:51 14-Ethyltoluene ND 6.1 ug/m3 01/29/20 04:51 14-Methyl-2-pentanone ND 12 ug/m3 01/29/20 04:51 1Acetone48 1.6 ug/m3 01/29/20 04:51 1Benzene20 7.8 ug/m3 01/29/20 04:51 1Benzyl chloride ND 3.4 ug/m3 01/29/20 04:51 1Bromodichloromethane5.3 5.2 ug/m3 01/29/20 04:51 1BromoformND 1.9 ug/m3 01/29/20 04:51 1BromomethaneND 2.0 ug/m3 01/29/20 04:51 1cis-1,2-Dichloroethene ND 2.3 ug/m3 01/29/20 04:51 1cis-1,3-Dichloropropene ND 16 ug/m3 01/29/20 04:51 1Carbon disulfide 44 3.1 ug/m3 01/29/20 04:51 1Carbon tetrachloride ND 2.3 ug/m3 01/29/20 04:51 1ChlorobenzeneND 1.3 ug/m3 01/29/20 04:51 1ChloroethaneND 2.4 ug/m3 01/29/20 04:51 1ChloroformND 1.0 ug/m3 01/29/20 04:51 1Chloromethane7.0 4.3 ug/m3 01/29/20 04:51 1DibromochloromethaneND 2.5 ug/m3 01/29/20 04:51 1Dichlorodifluoromethane2.5 14 ug/m3 01/29/20 04:51 1DichlorotetrafluoroethaneND 2.2 ug/m3 01/29/20 04:51 1Ethylbenzene7.8 16 ug/m3 01/29/20 04:51 1Hexachloro-1,3-butadiene ND 120 ug/m3 01/29/20 04:51 1IsopropanolND 17 ug/m3 01/29/20 04:51 1Methylene Chloride ND 7.2 ug/m3 01/29/20 04:51 1Methyl-t-Butyl Ether (MTBE)ND 8.2 ug/m3 01/29/20 04:51 1n-Butylbenzene ND 2.2 ug/m3 01/29/20 04:51 1o-Xylene 7.0 8.7 ug/m3 01/29/20 04:51 1m,p-Xylene 20 8.2 ug/m3 01/29/20 04:51 1sec-Butylbenzene ND 6.4 ug/m3 01/29/20 04:51 1StyreneND 2.0 ug/m3 01/29/20 04:51 1trans-1,2-Dichloroethene ND 4.5 ug/m3 01/29/20 04:51 1trans-1,3-Dichloropropene ND 8.2 ug/m3 01/29/20 04:51 1tert-Butylbenzene ND 3.4 ug/m3 01/29/20 04:51 1TetrachloroetheneND 19 ug/m3 01/29/20 04:51 1Toluene53 2.7 ug/m3 01/29/20 04:51 1TrichloroetheneND 5.6 ug/m3 01/29/20 04:51 1TrichlorofluoromethaneND 7.0 ug/m3 01/29/20 04:51 1Vinyl acetate ND 1.3 ug/m3 01/29/20 04:51 1Vinyl chloride ND 1,2-Dichloroethane-d4 (Surr)118 47 -137 01/29/20 04:51 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery 4-Bromofluorobenzene (Surr)102 01/29/20 04:51 157-129 Toluene-d8 (Surr)97 01/29/20 04:51 178-156 Eurofins Calscience LLC Page 21 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Method: TO-15 - Volatile Organic Compounds in Ambient Air Lab Sample ID: 570-19024-10Client Sample ID: SVP4-5 Matrix: AirDate Collected: 01/27/20 14:59 Date Received: 01/27/20 19:10 RL 1,1,1-Trichloroethane ND 2.7 ug/m3 01/29/20 03:58 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 6.9 ug/m3 01/29/20 03:58 11,1,2,2-Tetrachloroethane ND 11 ug/m3 01/29/20 03:58 11,1,2-Trichloro-1,2,2-trifluoroethane ND 2.7 ug/m3 01/29/20 03:58 11,1,2-Trichloroethane ND 2.0 ug/m3 01/29/20 03:58 11,1-Dichloroethane ND 2.0 ug/m3 01/29/20 03:58 11,1-Dichloroethene ND 5.4 ug/m3 01/29/20 03:58 11,1-Difluoroethane ND 15 ug/m3 01/29/20 03:58 11,2,4-Trichlorobenzene ND 7.4 ug/m3 01/29/20 03:58 11,2,4-Trimethylbenzene ND 14 ug/m3 01/29/20 03:58 11,2-Dibromo-3-Chloropropane ND 3.8 ug/m3 01/29/20 03:58 11,2-Dibromoethane ND 3.0 ug/m3 01/29/20 03:58 11,2-Dichlorobenzene ND 2.0 ug/m3 01/29/20 03:58 11,2-Dichloroethane ND 2.3 ug/m3 01/29/20 03:58 11,2-Dichloropropane ND 2.5 ug/m3 01/29/20 03:58 11,3,5-Trimethylbenzene ND 3.0 ug/m3 01/29/20 03:58 11,3-Dichlorobenzene ND 3.0 ug/m3 01/29/20 03:58 11,4-Dichlorobenzene ND 4.4 ug/m3 01/29/20 03:58 12-Butanone 12 6.1 ug/m3 01/29/20 03:58 12-Hexanone ND 2.5 ug/m3 01/29/20 03:58 14-Ethyltoluene ND 6.1 ug/m3 01/29/20 03:58 14-Methyl-2-pentanone ND 12 ug/m3 01/29/20 03:58 1Acetone45 1.6 ug/m3 01/29/20 03:58 1Benzene2.3 7.8 ug/m3 01/29/20 03:58 1Benzyl chloride ND 3.4 ug/m3 01/29/20 03:58 1BromodichloromethaneND 5.2 ug/m3 01/29/20 03:58 1BromoformND 1.9 ug/m3 01/29/20 03:58 1BromomethaneND 2.0 ug/m3 01/29/20 03:58 1cis-1,2-Dichloroethene ND 2.3 ug/m3 01/29/20 03:58 1cis-1,3-Dichloropropene ND 16 ug/m3 01/29/20 03:58 1Carbon disulfide ND 3.1 ug/m3 01/29/20 03:58 1Carbon tetrachloride ND 2.3 ug/m3 01/29/20 03:58 1ChlorobenzeneND 1.3 ug/m3 01/29/20 03:58 1ChloroethaneND 2.4 ug/m3 01/29/20 03:58 1Chloroform2.8 1.0 ug/m3 01/29/20 03:58 1ChloromethaneND 4.3 ug/m3 01/29/20 03:58 1DibromochloromethaneND 2.5 ug/m3 01/29/20 03:58 1Dichlorodifluoromethane13 14 ug/m3 01/29/20 03:58 1DichlorotetrafluoroethaneND 2.2 ug/m3 01/29/20 03:58 1EthylbenzeneND 16 ug/m3 01/29/20 03:58 1Hexachloro-1,3-butadiene ND 120 ug/m3 01/29/20 03:58 1IsopropanolND 17 ug/m3 01/29/20 03:58 1Methylene Chloride ND 7.2 ug/m3 01/29/20 03:58 1Methyl-t-Butyl Ether (MTBE)ND 8.2 ug/m3 01/29/20 03:58 1n-Butylbenzene ND 2.2 ug/m3 01/29/20 03:58 1o-Xylene 2.3 8.7 ug/m3 01/29/20 03:58 1m,p-Xylene ND 8.2 ug/m3 01/29/20 03:58 1sec-Butylbenzene ND 6.4 ug/m3 01/29/20 03:58 1StyreneND 2.0 ug/m3 01/29/20 03:58 1trans-1,2-Dichloroethene ND Eurofins Calscience LLC Page 22 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Method: TO-15 - Volatile Organic Compounds in Ambient Air (Continued) Lab Sample ID: 570-19024-10Client Sample ID: SVP4-5 Matrix: AirDate Collected: 01/27/20 14:59 Date Received: 01/27/20 19:10 RL trans-1,3-Dichloropropene ND 4.5 ug/m3 01/29/20 03:58 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 8.2 ug/m3 01/29/20 03:58 1tert-Butylbenzene ND 3.4 ug/m3 01/29/20 03:58 1TetrachloroetheneND 19 ug/m3 01/29/20 03:58 1Toluene24 2.7 ug/m3 01/29/20 03:58 1TrichloroetheneND 5.6 ug/m3 01/29/20 03:58 1TrichlorofluoromethaneND 7.0 ug/m3 01/29/20 03:58 1Vinyl acetate ND 1.3 ug/m3 01/29/20 03:58 1Vinyl chloride ND 1,2-Dichloroethane-d4 (Surr)110 47 -137 01/29/20 03:58 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery 4-Bromofluorobenzene (Surr)103 01/29/20 03:58 157-129 Toluene-d8 (Surr)100 01/29/20 03:58 178-156 Lab Sample ID: 570-19024-11Client Sample ID: SVP4-10 Matrix: AirDate Collected: 01/27/20 15:12 Date Received: 01/27/20 19:10 RL 1,1,1-Trichloroethane ND 2.7 ug/m3 01/29/20 17:13 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 6.9 ug/m3 01/29/20 17:13 11,1,2,2-Tetrachloroethane ND 11 ug/m3 01/29/20 17:13 11,1,2-Trichloro-1,2,2-trifluoroethane ND 2.7 ug/m3 01/29/20 17:13 11,1,2-Trichloroethane ND 2.0 ug/m3 01/29/20 17:13 11,1-Dichloroethane ND 2.0 ug/m3 01/29/20 17:13 11,1-Dichloroethene ND 5.4 ug/m3 01/29/20 17:13 11,1-Difluoroethane ND 15 ug/m3 01/29/20 17:13 11,2,4-Trichlorobenzene ND 7.4 ug/m3 01/29/20 17:13 11,2,4-Trimethylbenzene ND 14 ug/m3 01/29/20 17:13 11,2-Dibromo-3-Chloropropane ND 3.8 ug/m3 01/29/20 17:13 11,2-Dibromoethane ND 3.0 ug/m3 01/29/20 17:13 11,2-Dichlorobenzene ND 2.0 ug/m3 01/29/20 17:13 11,2-Dichloroethane ND 2.3 ug/m3 01/29/20 17:13 11,2-Dichloropropane ND 2.5 ug/m3 01/29/20 17:13 11,3,5-Trimethylbenzene ND 3.0 ug/m3 01/29/20 17:13 11,3-Dichlorobenzene ND 3.0 ug/m3 01/29/20 17:13 11,4-Dichlorobenzene ND 4.4 ug/m3 01/29/20 17:13 12-Butanone 14 6.1 ug/m3 01/29/20 17:13 12-Hexanone ND 2.5 ug/m3 01/29/20 17:13 14-Ethyltoluene 36 6.1 ug/m3 01/29/20 17:13 14-Methyl-2-pentanone ND 12 ug/m3 01/29/20 17:13 1Acetone62 1.6 ug/m3 01/29/20 17:13 1Benzene2.5 7.8 ug/m3 01/29/20 17:13 1Benzyl chloride ND 3.4 ug/m3 01/29/20 17:13 1BromodichloromethaneND 5.2 ug/m3 01/29/20 17:13 1BromoformND 1.9 ug/m3 01/29/20 17:13 1BromomethaneND 2.0 ug/m3 01/29/20 17:13 1cis-1,2-Dichloroethene ND 2.3 ug/m3 01/29/20 17:13 1cis-1,3-Dichloropropene ND 16 ug/m3 01/29/20 17:13 1Carbon disulfide ND 3.1 ug/m3 01/29/20 17:13 1Carbon tetrachloride ND 2.3 ug/m3 01/29/20 17:13 1ChlorobenzeneND Eurofins Calscience LLC Page 23 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Method: TO-15 - Volatile Organic Compounds in Ambient Air (Continued) Lab Sample ID: 570-19024-11Client Sample ID: SVP4-10 Matrix: AirDate Collected: 01/27/20 15:12 Date Received: 01/27/20 19:10 RL Chloroethane ND 1.3 ug/m3 01/29/20 17:13 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 2.4 ug/m3 01/29/20 17:13 1ChloroformND 1.0 ug/m3 01/29/20 17:13 1ChloromethaneND 4.3 ug/m3 01/29/20 17:13 1DibromochloromethaneND 2.5 ug/m3 01/29/20 17:13 1Dichlorodifluoromethane8.5 14 ug/m3 01/29/20 17:13 1DichlorotetrafluoroethaneND 2.2 ug/m3 01/29/20 17:13 1Ethylbenzene2.8 16 ug/m3 01/29/20 17:13 1Hexachloro-1,3-butadiene ND 120 ug/m3 01/29/20 17:13 1IsopropanolND 17 ug/m3 01/29/20 17:13 1Methylene Chloride ND 7.2 ug/m3 01/29/20 17:13 1Methyl-t-Butyl Ether (MTBE)ND 8.2 ug/m3 01/29/20 17:13 1n-Butylbenzene ND 2.2 ug/m3 01/29/20 17:13 1o-Xylene ND 8.7 ug/m3 01/29/20 17:13 1m,p-Xylene ND 8.2 ug/m3 01/29/20 17:13 1sec-Butylbenzene ND 6.4 ug/m3 01/29/20 17:13 1StyreneND 2.0 ug/m3 01/29/20 17:13 1trans-1,2-Dichloroethene ND 4.5 ug/m3 01/29/20 17:13 1trans-1,3-Dichloropropene ND 8.2 ug/m3 01/29/20 17:13 1tert-Butylbenzene ND 3.4 ug/m3 01/29/20 17:13 1TetrachloroetheneND 19 ug/m3 01/29/20 17:13 1Toluene250 2.7 ug/m3 01/29/20 17:13 1TrichloroetheneND 5.6 ug/m3 01/29/20 17:13 1TrichlorofluoromethaneND 7.0 ug/m3 01/29/20 17:13 1Vinyl acetate ND 1.3 ug/m3 01/29/20 17:13 1Vinyl chloride ND 1,2-Dichloroethane-d4 (Surr)100 47 -137 01/29/20 17:13 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery 4-Bromofluorobenzene (Surr)113 01/29/20 17:13 157-129 Toluene-d8 (Surr)96 01/29/20 17:13 178-156 Lab Sample ID: 570-19024-12Client Sample ID: SVP4-19.5 Matrix: AirDate Collected: 01/27/20 15:27 Date Received: 01/27/20 19:10 RL 1,1,1-Trichloroethane ND 2.7 ug/m3 01/29/20 17:03 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 6.9 ug/m3 01/29/20 17:03 11,1,2,2-Tetrachloroethane ND 11 ug/m3 01/29/20 17:03 11,1,2-Trichloro-1,2,2-trifluoroethane ND 2.7 ug/m3 01/29/20 17:03 11,1,2-Trichloroethane ND 2.0 ug/m3 01/29/20 17:03 11,1-Dichloroethane ND 2.0 ug/m3 01/29/20 17:03 11,1-Dichloroethene ND 5.4 ug/m3 01/29/20 17:03 11,1-Difluoroethane ND 15 ug/m3 01/29/20 17:03 11,2,4-Trichlorobenzene ND 7.4 ug/m3 01/29/20 17:03 11,2,4-Trimethylbenzene ND 14 ug/m3 01/29/20 17:03 11,2-Dibromo-3-Chloropropane ND 3.8 ug/m3 01/29/20 17:03 11,2-Dibromoethane ND 3.0 ug/m3 01/29/20 17:03 11,2-Dichlorobenzene ND 2.0 ug/m3 01/29/20 17:03 11,2-Dichloroethane ND 2.3 ug/m3 01/29/20 17:03 11,2-Dichloropropane ND 2.5 ug/m3 01/29/20 17:03 11,3,5-Trimethylbenzene ND Eurofins Calscience LLC Page 24 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Method: TO-15 - Volatile Organic Compounds in Ambient Air (Continued) Lab Sample ID: 570-19024-12Client Sample ID: SVP4-19.5 Matrix: AirDate Collected: 01/27/20 15:27 Date Received: 01/27/20 19:10 RL 1,3-Dichlorobenzene ND 3.0 ug/m3 01/29/20 17:03 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 3.0 ug/m3 01/29/20 17:03 11,4-Dichlorobenzene ND 4.4 ug/m3 01/29/20 17:03 12-Butanone 10 6.1 ug/m3 01/29/20 17:03 12-Hexanone ND 2.5 ug/m3 01/29/20 17:03 14-Ethyltoluene ND 6.1 ug/m3 01/29/20 17:03 14-Methyl-2-pentanone ND 12 ug/m3 01/29/20 17:03 1Acetone57 1.6 ug/m3 01/29/20 17:03 1Benzene9.4 7.8 ug/m3 01/29/20 17:03 1Benzyl chloride ND 3.4 ug/m3 01/29/20 17:03 1BromodichloromethaneND 5.2 ug/m3 01/29/20 17:03 1BromoformND 1.9 ug/m3 01/29/20 17:03 1BromomethaneND 2.0 ug/m3 01/29/20 17:03 1cis-1,2-Dichloroethene ND 2.3 ug/m3 01/29/20 17:03 1cis-1,3-Dichloropropene ND 16 ug/m3 01/29/20 17:03 1Carbon disulfide 25 3.1 ug/m3 01/29/20 17:03 1Carbon tetrachloride ND 2.3 ug/m3 01/29/20 17:03 1ChlorobenzeneND 1.3 ug/m3 01/29/20 17:03 1ChloroethaneND 2.4 ug/m3 01/29/20 17:03 1Chloroform3.2 1.0 ug/m3 01/29/20 17:03 1ChloromethaneND 4.3 ug/m3 01/29/20 17:03 1DibromochloromethaneND 2.5 ug/m3 01/29/20 17:03 1Dichlorodifluoromethane14 14 ug/m3 01/29/20 17:03 1DichlorotetrafluoroethaneND 2.2 ug/m3 01/29/20 17:03 1Ethylbenzene3.1 16 ug/m3 01/29/20 17:03 1Hexachloro-1,3-butadiene ND 120 ug/m3 01/29/20 17:03 1IsopropanolND 17 ug/m3 01/29/20 17:03 1Methylene Chloride ND 7.2 ug/m3 01/29/20 17:03 1Methyl-t-Butyl Ether (MTBE)ND 8.2 ug/m3 01/29/20 17:03 1n-Butylbenzene ND 2.2 ug/m3 01/29/20 17:03 1o-Xylene 2.7 8.7 ug/m3 01/29/20 17:03 1m,p-Xylene ND 8.2 ug/m3 01/29/20 17:03 1sec-Butylbenzene ND 6.4 ug/m3 01/29/20 17:03 1StyreneND 2.0 ug/m3 01/29/20 17:03 1trans-1,2-Dichloroethene ND 4.5 ug/m3 01/29/20 17:03 1trans-1,3-Dichloropropene ND 8.2 ug/m3 01/29/20 17:03 1tert-Butylbenzene ND 3.4 ug/m3 01/29/20 17:03 1TetrachloroetheneND 19 ug/m3 01/29/20 17:03 1Toluene27 2.7 ug/m3 01/29/20 17:03 1TrichloroetheneND 5.6 ug/m3 01/29/20 17:03 1TrichlorofluoromethaneND 7.0 ug/m3 01/29/20 17:03 1Vinyl acetate ND 1.3 ug/m3 01/29/20 17:03 1Vinyl chloride ND 1,2-Dichloroethane-d4 (Surr)110 47 -137 01/29/20 17:03 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery 4-Bromofluorobenzene (Surr)115 01/29/20 17:03 157-129 Toluene-d8 (Surr)102 01/29/20 17:03 178-156 Eurofins Calscience LLC Page 25 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Method: TO-15 - Volatile Organic Compounds in Ambient Air Lab Sample ID: 570-19024-13Client Sample ID: SVP5-5 Matrix: AirDate Collected: 01/27/20 15:48 Date Received: 01/27/20 19:10 RL 1,1,1-Trichloroethane ND 2.7 ug/m3 01/28/20 19:22 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 6.9 ug/m3 01/28/20 19:22 11,1,2,2-Tetrachloroethane ND 11 ug/m3 01/28/20 19:22 11,1,2-Trichloro-1,2,2-trifluoroethane ND 2.7 ug/m3 01/28/20 19:22 11,1,2-Trichloroethane ND 2.0 ug/m3 01/28/20 19:22 11,1-Dichloroethane ND 2.0 ug/m3 01/28/20 19:22 11,1-Dichloroethene ND 5.4 ug/m3 01/28/20 19:22 11,1-Difluoroethane ND 15 ug/m3 01/28/20 19:22 11,2,4-Trichlorobenzene ND 7.4 ug/m3 01/28/20 19:22 11,2,4-Trimethylbenzene ND 14 ug/m3 01/28/20 19:22 11,2-Dibromo-3-Chloropropane ND 3.8 ug/m3 01/28/20 19:22 11,2-Dibromoethane ND 3.0 ug/m3 01/28/20 19:22 11,2-Dichlorobenzene ND 2.0 ug/m3 01/28/20 19:22 11,2-Dichloroethane ND 2.3 ug/m3 01/28/20 19:22 11,2-Dichloropropane ND 2.5 ug/m3 01/28/20 19:22 11,3,5-Trimethylbenzene ND 3.0 ug/m3 01/28/20 19:22 11,3-Dichlorobenzene ND 3.0 ug/m3 01/28/20 19:22 11,4-Dichlorobenzene ND 4.4 ug/m3 01/28/20 19:22 12-Butanone 14 6.1 ug/m3 01/28/20 19:22 12-Hexanone ND 2.5 ug/m3 01/28/20 19:22 14-Ethyltoluene ND 6.1 ug/m3 01/28/20 19:22 14-Methyl-2-pentanone ND 12 ug/m3 01/28/20 19:22 1Acetone48 1.6 ug/m3 01/28/20 19:22 1BenzeneND 7.8 ug/m3 01/28/20 19:22 1Benzyl chloride ND 3.4 ug/m3 01/28/20 19:22 1BromodichloromethaneND 5.2 ug/m3 01/28/20 19:22 1BromoformND 1.9 ug/m3 01/28/20 19:22 1BromomethaneND 2.0 ug/m3 01/28/20 19:22 1cis-1,2-Dichloroethene ND 2.3 ug/m3 01/28/20 19:22 1cis-1,3-Dichloropropene ND 16 ug/m3 01/28/20 19:22 1Carbon disulfide ND 3.1 ug/m3 01/28/20 19:22 1Carbon tetrachloride ND 2.3 ug/m3 01/28/20 19:22 1ChlorobenzeneND 1.3 ug/m3 01/28/20 19:22 1ChloroethaneND 2.4 ug/m3 01/28/20 19:22 1ChloroformND 1.0 ug/m3 01/28/20 19:22 1ChloromethaneND 4.3 ug/m3 01/28/20 19:22 1DibromochloromethaneND 2.5 ug/m3 01/28/20 19:22 1Dichlorodifluoromethane5.5 14 ug/m3 01/28/20 19:22 1DichlorotetrafluoroethaneND 2.2 ug/m3 01/28/20 19:22 1EthylbenzeneND 16 ug/m3 01/28/20 19:22 1Hexachloro-1,3-butadiene ND 120 ug/m3 01/28/20 19:22 1IsopropanolND 17 ug/m3 01/28/20 19:22 1Methylene Chloride ND 7.2 ug/m3 01/28/20 19:22 1Methyl-t-Butyl Ether (MTBE)ND 8.2 ug/m3 01/28/20 19:22 1n-Butylbenzene ND 2.2 ug/m3 01/28/20 19:22 1o-Xylene ND 8.7 ug/m3 01/28/20 19:22 1m,p-Xylene ND 8.2 ug/m3 01/28/20 19:22 1sec-Butylbenzene ND 6.4 ug/m3 01/28/20 19:22 1StyreneND 2.0 ug/m3 01/28/20 19:22 1trans-1,2-Dichloroethene ND Eurofins Calscience LLC Page 26 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Method: TO-15 - Volatile Organic Compounds in Ambient Air (Continued) Lab Sample ID: 570-19024-13Client Sample ID: SVP5-5 Matrix: AirDate Collected: 01/27/20 15:48 Date Received: 01/27/20 19:10 RL trans-1,3-Dichloropropene ND 4.5 ug/m3 01/28/20 19:22 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 8.2 ug/m3 01/28/20 19:22 1tert-Butylbenzene ND 3.4 ug/m3 01/28/20 19:22 1TetrachloroetheneND 19 ug/m3 01/28/20 19:22 1TolueneND 2.7 ug/m3 01/28/20 19:22 1TrichloroetheneND 5.6 ug/m3 01/28/20 19:22 1TrichlorofluoromethaneND 7.0 ug/m3 01/28/20 19:22 1Vinyl acetate ND 1.3 ug/m3 01/28/20 19:22 1Vinyl chloride ND 1,2-Dichloroethane-d4 (Surr)103 47 -137 01/28/20 19:22 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery 4-Bromofluorobenzene (Surr)102 01/28/20 19:22 157-129 Toluene-d8 (Surr)97 01/28/20 19:22 178-156 Lab Sample ID: 570-19024-14Client Sample ID: SVP5-10 Matrix: AirDate Collected: 01/27/20 16:08 Date Received: 01/27/20 19:10 RL 1,1,1-Trichloroethane ND 2.7 ug/m3 01/28/20 20:12 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 6.9 ug/m3 01/28/20 20:12 11,1,2,2-Tetrachloroethane ND 11 ug/m3 01/28/20 20:12 11,1,2-Trichloro-1,2,2-trifluoroethane ND 2.7 ug/m3 01/28/20 20:12 11,1,2-Trichloroethane ND 2.0 ug/m3 01/28/20 20:12 11,1-Dichloroethane ND 2.0 ug/m3 01/28/20 20:12 11,1-Dichloroethene ND 5.4 ug/m3 01/28/20 20:12 11,1-Difluoroethane ND 15 ug/m3 01/28/20 20:12 11,2,4-Trichlorobenzene ND 7.4 ug/m3 01/28/20 20:12 11,2,4-Trimethylbenzene ND 14 ug/m3 01/28/20 20:12 11,2-Dibromo-3-Chloropropane ND 3.8 ug/m3 01/28/20 20:12 11,2-Dibromoethane ND 3.0 ug/m3 01/28/20 20:12 11,2-Dichlorobenzene ND 2.0 ug/m3 01/28/20 20:12 11,2-Dichloroethane ND 2.3 ug/m3 01/28/20 20:12 11,2-Dichloropropane ND 2.5 ug/m3 01/28/20 20:12 11,3,5-Trimethylbenzene ND 3.0 ug/m3 01/28/20 20:12 11,3-Dichlorobenzene ND 3.0 ug/m3 01/28/20 20:12 11,4-Dichlorobenzene ND 4.4 ug/m3 01/28/20 20:12 12-Butanone 14 6.1 ug/m3 01/28/20 20:12 12-Hexanone ND 2.5 ug/m3 01/28/20 20:12 14-Ethyltoluene ND 6.1 ug/m3 01/28/20 20:12 14-Methyl-2-pentanone ND 12 ug/m3 01/28/20 20:12 1Acetone50 1.6 ug/m3 01/28/20 20:12 1BenzeneND 7.8 ug/m3 01/28/20 20:12 1Benzyl chloride ND 3.4 ug/m3 01/28/20 20:12 1BromodichloromethaneND 5.2 ug/m3 01/28/20 20:12 1BromoformND 1.9 ug/m3 01/28/20 20:12 1BromomethaneND 2.0 ug/m3 01/28/20 20:12 1cis-1,2-Dichloroethene ND 2.3 ug/m3 01/28/20 20:12 1cis-1,3-Dichloropropene ND 16 ug/m3 01/28/20 20:12 1Carbon disulfide ND 3.1 ug/m3 01/28/20 20:12 1Carbon tetrachloride ND 2.3 ug/m3 01/28/20 20:12 1ChlorobenzeneND Eurofins Calscience LLC Page 27 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Method: TO-15 - Volatile Organic Compounds in Ambient Air (Continued) Lab Sample ID: 570-19024-14Client Sample ID: SVP5-10 Matrix: AirDate Collected: 01/27/20 16:08 Date Received: 01/27/20 19:10 RL Chloroethane ND 1.3 ug/m3 01/28/20 20:12 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 2.4 ug/m3 01/28/20 20:12 1ChloroformND 1.0 ug/m3 01/28/20 20:12 1ChloromethaneND 4.3 ug/m3 01/28/20 20:12 1DibromochloromethaneND 2.5 ug/m3 01/28/20 20:12 1Dichlorodifluoromethane7.0 14 ug/m3 01/28/20 20:12 1DichlorotetrafluoroethaneND 2.2 ug/m3 01/28/20 20:12 1EthylbenzeneND 16 ug/m3 01/28/20 20:12 1Hexachloro-1,3-butadiene ND 120 ug/m3 01/28/20 20:12 1IsopropanolND 17 ug/m3 01/28/20 20:12 1Methylene Chloride ND 7.2 ug/m3 01/28/20 20:12 1Methyl-t-Butyl Ether (MTBE)ND 8.2 ug/m3 01/28/20 20:12 1n-Butylbenzene ND 2.2 ug/m3 01/28/20 20:12 1o-Xylene 2.2 8.7 ug/m3 01/28/20 20:12 1m,p-Xylene ND 8.2 ug/m3 01/28/20 20:12 1sec-Butylbenzene ND 6.4 ug/m3 01/28/20 20:12 1StyreneND 2.0 ug/m3 01/28/20 20:12 1trans-1,2-Dichloroethene ND 4.5 ug/m3 01/28/20 20:12 1trans-1,3-Dichloropropene ND 8.2 ug/m3 01/28/20 20:12 1tert-Butylbenzene ND 3.4 ug/m3 01/28/20 20:12 1TetrachloroetheneND 19 ug/m3 01/28/20 20:12 1Toluene20 2.7 ug/m3 01/28/20 20:12 1TrichloroetheneND 5.6 ug/m3 01/28/20 20:12 1TrichlorofluoromethaneND 7.0 ug/m3 01/28/20 20:12 1Vinyl acetate ND 1.3 ug/m3 01/28/20 20:12 1Vinyl chloride ND 1,2-Dichloroethane-d4 (Surr)109 47 -137 01/28/20 20:12 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery 4-Bromofluorobenzene (Surr)100 01/28/20 20:12 157-129 Toluene-d8 (Surr)97 01/28/20 20:12 178-156 Lab Sample ID: 570-19024-15Client Sample ID: SVP5-15 Matrix: AirDate Collected: 01/27/20 16:24 Date Received: 01/27/20 19:10 RL 1,1,1-Trichloroethane ND 2.7 ug/m3 01/28/20 21:02 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 6.9 ug/m3 01/28/20 21:02 11,1,2,2-Tetrachloroethane ND 11 ug/m3 01/28/20 21:02 11,1,2-Trichloro-1,2,2-trifluoroethane ND 2.7 ug/m3 01/28/20 21:02 11,1,2-Trichloroethane ND 2.0 ug/m3 01/28/20 21:02 11,1-Dichloroethane ND 2.0 ug/m3 01/28/20 21:02 11,1-Dichloroethene ND 5.4 ug/m3 01/28/20 21:02 11,1-Difluoroethane ND 15 ug/m3 01/28/20 21:02 11,2,4-Trichlorobenzene ND 7.4 ug/m3 01/28/20 21:02 11,2,4-Trimethylbenzene ND 14 ug/m3 01/28/20 21:02 11,2-Dibromo-3-Chloropropane ND 3.8 ug/m3 01/28/20 21:02 11,2-Dibromoethane ND 3.0 ug/m3 01/28/20 21:02 11,2-Dichlorobenzene ND 2.0 ug/m3 01/28/20 21:02 11,2-Dichloroethane ND 2.3 ug/m3 01/28/20 21:02 11,2-Dichloropropane ND 2.5 ug/m3 01/28/20 21:02 11,3,5-Trimethylbenzene ND Eurofins Calscience LLC Page 28 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Method: TO-15 - Volatile Organic Compounds in Ambient Air (Continued) Lab Sample ID: 570-19024-15Client Sample ID: SVP5-15 Matrix: AirDate Collected: 01/27/20 16:24 Date Received: 01/27/20 19:10 RL 1,3-Dichlorobenzene ND 3.0 ug/m3 01/28/20 21:02 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 3.0 ug/m3 01/28/20 21:02 11,4-Dichlorobenzene ND 4.4 ug/m3 01/28/20 21:02 12-Butanone 13 6.1 ug/m3 01/28/20 21:02 12-Hexanone ND 2.5 ug/m3 01/28/20 21:02 14-Ethyltoluene ND 6.1 ug/m3 01/28/20 21:02 14-Methyl-2-pentanone ND 12 ug/m3 01/28/20 21:02 1Acetone42 1.6 ug/m3 01/28/20 21:02 1BenzeneND 7.8 ug/m3 01/28/20 21:02 1Benzyl chloride ND 3.4 ug/m3 01/28/20 21:02 1BromodichloromethaneND 5.2 ug/m3 01/28/20 21:02 1BromoformND 1.9 ug/m3 01/28/20 21:02 1BromomethaneND 2.0 ug/m3 01/28/20 21:02 1cis-1,2-Dichloroethene ND 2.3 ug/m3 01/28/20 21:02 1cis-1,3-Dichloropropene ND 16 ug/m3 01/28/20 21:02 1Carbon disulfide ND 3.1 ug/m3 01/28/20 21:02 1Carbon tetrachloride ND 2.3 ug/m3 01/28/20 21:02 1ChlorobenzeneND 1.3 ug/m3 01/28/20 21:02 1ChloroethaneND 2.4 ug/m3 01/28/20 21:02 1ChloroformND 1.0 ug/m3 01/28/20 21:02 1ChloromethaneND 4.3 ug/m3 01/28/20 21:02 1DibromochloromethaneND 2.5 ug/m3 01/28/20 21:02 1Dichlorodifluoromethane6.8 14 ug/m3 01/28/20 21:02 1DichlorotetrafluoroethaneND 2.2 ug/m3 01/28/20 21:02 1EthylbenzeneND 16 ug/m3 01/28/20 21:02 1Hexachloro-1,3-butadiene ND 120 ug/m3 01/28/20 21:02 1IsopropanolND 17 ug/m3 01/28/20 21:02 1Methylene Chloride ND 7.2 ug/m3 01/28/20 21:02 1Methyl-t-Butyl Ether (MTBE)ND 8.2 ug/m3 01/28/20 21:02 1n-Butylbenzene ND 2.2 ug/m3 01/28/20 21:02 1o-Xylene ND 8.7 ug/m3 01/28/20 21:02 1m,p-Xylene ND 8.2 ug/m3 01/28/20 21:02 1sec-Butylbenzene ND 6.4 ug/m3 01/28/20 21:02 1StyreneND 2.0 ug/m3 01/28/20 21:02 1trans-1,2-Dichloroethene ND 4.5 ug/m3 01/28/20 21:02 1trans-1,3-Dichloropropene ND 8.2 ug/m3 01/28/20 21:02 1tert-Butylbenzene ND 3.4 ug/m3 01/28/20 21:02 1TetrachloroetheneND 19 ug/m3 01/28/20 21:02 1TolueneND 2.7 ug/m3 01/28/20 21:02 1TrichloroetheneND 5.6 ug/m3 01/28/20 21:02 1TrichlorofluoromethaneND 7.0 ug/m3 01/28/20 21:02 1Vinyl acetate ND 1.3 ug/m3 01/28/20 21:02 1Vinyl chloride ND 1,2-Dichloroethane-d4 (Surr)105 47 -137 01/28/20 21:02 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery 4-Bromofluorobenzene (Surr)108 01/28/20 21:02 157-129 Toluene-d8 (Surr)98 01/28/20 21:02 178-156 Eurofins Calscience LLC Page 29 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Method: D1946 - Fixed Gases in Air (GC) Lab Sample ID: 570-19024-1Client Sample ID: SVP1-5 Matrix: AirDate Collected: 01/27/20 14:05 Date Received: 01/27/20 19:10 RL Carbon dioxide ND 0.50 % v/v 01/28/20 10:58 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 0.50 % v/v 01/28/20 10:58 1Carbon monoxide ND 0.50 % v/v 01/28/20 10:58 1MethaneND 0.50 % v/v 01/28/20 10:58 1Nitrogen76 0.50 % v/v 01/28/20 10:58 1Oxygen + Argon 23 Lab Sample ID: 570-19024-2Client Sample ID: SVP1-10 Matrix: AirDate Collected: 01/27/20 14:25 Date Received: 01/27/20 19:10 RL Carbon dioxide ND 0.50 % v/v 01/28/20 11:36 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 0.50 % v/v 01/28/20 11:36 1Carbon monoxide ND 0.50 % v/v 01/28/20 11:36 1MethaneND 0.50 % v/v 01/28/20 11:36 1Nitrogen78 0.50 % v/v 01/28/20 11:36 1Oxygen + Argon 24 Lab Sample ID: 570-19024-3Client Sample ID: SVP1-19.5 Matrix: AirDate Collected: 01/27/20 14:41 Date Received: 01/27/20 19:10 RL Carbon dioxide ND 0.50 % v/v 01/28/20 11:54 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 0.50 % v/v 01/28/20 11:54 1Carbon monoxide ND 0.50 % v/v 01/28/20 11:54 1MethaneND 0.50 % v/v 01/28/20 11:54 1Nitrogen76 0.50 % v/v 01/28/20 11:54 1Oxygen + Argon 23 Lab Sample ID: 570-19024-4Client Sample ID: SVP2-5 Matrix: AirDate Collected: 01/27/20 12:22 Date Received: 01/27/20 19:10 RL Carbon dioxide ND 0.50 % v/v 01/28/20 12:13 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 0.50 % v/v 01/28/20 12:13 1Carbon monoxide ND 0.50 % v/v 01/28/20 12:13 1MethaneND 0.50 % v/v 01/28/20 12:13 1Nitrogen78 0.50 % v/v 01/28/20 12:13 1Oxygen + Argon 23 Lab Sample ID: 570-19024-5Client Sample ID: SVP2-10 Matrix: AirDate Collected: 01/27/20 13:14 Date Received: 01/27/20 19:10 RL Carbon dioxide ND 0.50 % v/v 01/28/20 12:31 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 0.50 % v/v 01/28/20 12:31 1Carbon monoxide ND 0.50 % v/v 01/28/20 12:31 1MethaneND 0.50 % v/v 01/28/20 12:31 1Nitrogen78 0.50 % v/v 01/28/20 12:31 1Oxygen + Argon 23 Lab Sample ID: 570-19024-6Client Sample ID: SVP2-19.5 Matrix: AirDate Collected: 01/27/20 13:39 Date Received: 01/27/20 19:10 RL Carbon dioxide ND 0.50 % v/v 01/28/20 12:49 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Eurofins Calscience LLC Page 30 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Method: D1946 - Fixed Gases in Air (GC) (Continued) Lab Sample ID: 570-19024-6Client Sample ID: SVP2-19.5 Matrix: AirDate Collected: 01/27/20 13:39 Date Received: 01/27/20 19:10 RL Carbon monoxide ND 0.50 % v/v 01/28/20 12:49 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 0.50 % v/v 01/28/20 12:49 1MethaneND 0.50 % v/v 01/28/20 12:49 1Nitrogen77 0.50 % v/v 01/28/20 12:49 1Oxygen + Argon 22 Lab Sample ID: 570-19024-7Client Sample ID: SVP3-5 Matrix: AirDate Collected: 01/27/20 10:57 Date Received: 01/27/20 19:10 RL Carbon dioxide ND 0.50 % v/v 01/28/20 13:07 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 0.50 % v/v 01/28/20 13:07 1Carbon monoxide ND 0.50 % v/v 01/28/20 13:07 1MethaneND 0.50 % v/v 01/28/20 13:07 1Nitrogen79 0.50 % v/v 01/28/20 13:07 1Oxygen + Argon 21 Lab Sample ID: 570-19024-8Client Sample ID: SVP3-10 Matrix: AirDate Collected: 01/27/20 11:20 Date Received: 01/27/20 19:10 RL Carbon dioxide ND 0.50 % v/v 01/28/20 13:26 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 0.50 % v/v 01/28/20 13:26 1Carbon monoxide ND 0.50 % v/v 01/28/20 13:26 1MethaneND 0.50 % v/v 01/28/20 13:26 1Nitrogen78 0.50 % v/v 01/28/20 13:26 1Oxygen + Argon 21 Lab Sample ID: 570-19024-9Client Sample ID: SVP3-19.5 Matrix: AirDate Collected: 01/27/20 11:49 Date Received: 01/27/20 19:10 RL Carbon dioxide ND 0.50 % v/v 01/28/20 13:43 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 0.50 % v/v 01/28/20 13:43 1Carbon monoxide ND 0.50 % v/v 01/28/20 13:43 1MethaneND 0.50 % v/v 01/28/20 13:43 1Nitrogen77 0.50 % v/v 01/28/20 13:43 1Oxygen + Argon 21 Lab Sample ID: 570-19024-10Client Sample ID: SVP4-5 Matrix: AirDate Collected: 01/27/20 14:59 Date Received: 01/27/20 19:10 RL Carbon dioxide 1.1 0.50 % v/v 01/28/20 14:01 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 0.50 % v/v 01/28/20 14:01 1Carbon monoxide ND 0.50 % v/v 01/28/20 14:01 1MethaneND 0.50 % v/v 01/28/20 14:01 1Nitrogen77 0.50 % v/v 01/28/20 14:01 1Oxygen + Argon 21 Lab Sample ID: 570-19024-11Client Sample ID: SVP4-10 Matrix: AirDate Collected: 01/27/20 15:12 Date Received: 01/27/20 19:10 RL Carbon dioxide 0.82 0.50 % v/v 01/28/20 14:19 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 0.50 % v/v 01/28/20 14:19 1Carbon monoxide ND Eurofins Calscience LLC Page 31 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Method: D1946 - Fixed Gases in Air (GC) (Continued) Lab Sample ID: 570-19024-11Client Sample ID: SVP4-10 Matrix: AirDate Collected: 01/27/20 15:12 Date Received: 01/27/20 19:10 RL Methane ND 0.50 % v/v 01/28/20 14:19 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 0.50 % v/v 01/28/20 14:19 1Nitrogen78 0.50 % v/v 01/28/20 14:19 1Oxygen + Argon 22 Lab Sample ID: 570-19024-12Client Sample ID: SVP4-19.5 Matrix: AirDate Collected: 01/27/20 15:27 Date Received: 01/27/20 19:10 RL Carbon dioxide 1.3 0.50 % v/v 01/28/20 14:37 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 0.50 % v/v 01/28/20 14:37 1Carbon monoxide ND 0.50 % v/v 01/28/20 14:37 1MethaneND 0.50 % v/v 01/28/20 14:37 1Nitrogen76 0.50 % v/v 01/28/20 14:37 1Oxygen + Argon 21 Lab Sample ID: 570-19024-13Client Sample ID: SVP5-5 Matrix: AirDate Collected: 01/27/20 15:48 Date Received: 01/27/20 19:10 RL Carbon dioxide 0.67 0.50 % v/v 01/28/20 14:54 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 0.50 % v/v 01/28/20 14:54 1Carbon monoxide ND 0.50 % v/v 01/28/20 14:54 1MethaneND 0.50 % v/v 01/28/20 14:54 1Nitrogen76 0.50 % v/v 01/28/20 14:54 1Oxygen + Argon 22 Lab Sample ID: 570-19024-14Client Sample ID: SVP5-10 Matrix: AirDate Collected: 01/27/20 16:08 Date Received: 01/27/20 19:10 RL Carbon dioxide ND 0.50 % v/v 01/28/20 15:12 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 0.50 % v/v 01/28/20 15:12 1Carbon monoxide ND 0.50 % v/v 01/28/20 15:12 1MethaneND 0.50 % v/v 01/28/20 15:12 1Nitrogen77 0.50 % v/v 01/28/20 15:12 1Oxygen + Argon 23 Lab Sample ID: 570-19024-15Client Sample ID: SVP5-15 Matrix: AirDate Collected: 01/27/20 16:24 Date Received: 01/27/20 19:10 RL Carbon dioxide ND 0.50 % v/v 01/28/20 15:30 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 0.50 % v/v 01/28/20 15:30 1Carbon monoxide ND 0.50 % v/v 01/28/20 15:30 1MethaneND 0.50 % v/v 01/28/20 15:30 1Nitrogen76 0.50 % v/v 01/28/20 15:30 1Oxygen + Argon 22 Eurofins Calscience LLC Page 32 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Method: Fixed Gas Norm - Fixed Gases from Stationary Sources Lab Sample ID: 570-19024-1Client Sample ID: SVP1-5 Matrix: AirDate Collected: 01/27/20 14:05 Date Received: 01/27/20 19:10 RL Carbon dioxide ND 0.50 % v/v 01/28/20 10:58 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 0.50 % v/v 01/28/20 10:58 1Carbon monoxide ND 0.50 % v/v 01/28/20 10:58 1MethaneND 0.50 % v/v 01/28/20 10:58 1Nitrogen77 0.50 % v/v 01/28/20 10:58 1Oxygen + Argon 23 Lab Sample ID: 570-19024-2Client Sample ID: SVP1-10 Matrix: AirDate Collected: 01/27/20 14:25 Date Received: 01/27/20 19:10 RL Carbon dioxide ND 0.50 % v/v 01/28/20 11:36 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 0.50 % v/v 01/28/20 11:36 1Carbon monoxide ND 0.50 % v/v 01/28/20 11:36 1MethaneND 0.50 % v/v 01/28/20 11:36 1Nitrogen77 0.50 % v/v 01/28/20 11:36 1Oxygen + Argon 23 Lab Sample ID: 570-19024-3Client Sample ID: SVP1-19.5 Matrix: AirDate Collected: 01/27/20 14:41 Date Received: 01/27/20 19:10 RL Carbon dioxide ND 0.50 % v/v 01/28/20 11:54 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 0.50 % v/v 01/28/20 11:54 1Carbon monoxide ND 0.50 % v/v 01/28/20 11:54 1MethaneND 0.50 % v/v 01/28/20 11:54 1Nitrogen77 0.50 % v/v 01/28/20 11:54 1Oxygen + Argon 23 Lab Sample ID: 570-19024-4Client Sample ID: SVP2-5 Matrix: AirDate Collected: 01/27/20 12:22 Date Received: 01/27/20 19:10 RL Carbon dioxide ND 0.50 % v/v 01/28/20 12:13 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 0.50 % v/v 01/28/20 12:13 1Carbon monoxide ND 0.50 % v/v 01/28/20 12:13 1MethaneND 0.50 % v/v 01/28/20 12:13 1Nitrogen78 0.50 % v/v 01/28/20 12:13 1Oxygen + Argon 22 Lab Sample ID: 570-19024-5Client Sample ID: SVP2-10 Matrix: AirDate Collected: 01/27/20 13:14 Date Received: 01/27/20 19:10 RL Carbon dioxide ND 0.50 % v/v 01/28/20 12:31 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 0.50 % v/v 01/28/20 12:31 1Carbon monoxide ND 0.50 % v/v 01/28/20 12:31 1MethaneND 0.50 % v/v 01/28/20 12:31 1Nitrogen78 0.50 % v/v 01/28/20 12:31 1Oxygen + Argon 22 Lab Sample ID: 570-19024-6Client Sample ID: SVP2-19.5 Matrix: AirDate Collected: 01/27/20 13:39 Date Received: 01/27/20 19:10 RL Carbon dioxide ND 0.50 % v/v 01/28/20 12:49 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Eurofins Calscience LLC Page 33 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Method: Fixed Gas Norm - Fixed Gases from Stationary Sources (Continued) Lab Sample ID: 570-19024-6Client Sample ID: SVP2-19.5 Matrix: AirDate Collected: 01/27/20 13:39 Date Received: 01/27/20 19:10 RL Carbon monoxide ND 0.50 % v/v 01/28/20 12:49 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 0.50 % v/v 01/28/20 12:49 1MethaneND 0.50 % v/v 01/28/20 12:49 1Nitrogen78 0.50 % v/v 01/28/20 12:49 1Oxygen + Argon 22 Lab Sample ID: 570-19024-7Client Sample ID: SVP3-5 Matrix: AirDate Collected: 01/27/20 10:57 Date Received: 01/27/20 19:10 RL Carbon dioxide ND 0.50 % v/v 01/28/20 13:07 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 0.50 % v/v 01/28/20 13:07 1Carbon monoxide ND 0.50 % v/v 01/28/20 13:07 1MethaneND 0.50 % v/v 01/28/20 13:07 1Nitrogen79 0.50 % v/v 01/28/20 13:07 1Oxygen + Argon 21 Lab Sample ID: 570-19024-8Client Sample ID: SVP3-10 Matrix: AirDate Collected: 01/27/20 11:20 Date Received: 01/27/20 19:10 RL Carbon dioxide ND 0.50 % v/v 01/28/20 13:26 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 0.50 % v/v 01/28/20 13:26 1Carbon monoxide ND 0.50 % v/v 01/28/20 13:26 1MethaneND 0.50 % v/v 01/28/20 13:26 1Nitrogen79 0.50 % v/v 01/28/20 13:26 1Oxygen + Argon 21 Lab Sample ID: 570-19024-9Client Sample ID: SVP3-19.5 Matrix: AirDate Collected: 01/27/20 11:49 Date Received: 01/27/20 19:10 RL Carbon dioxide ND 0.50 % v/v 01/28/20 13:43 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 0.50 % v/v 01/28/20 13:43 1Carbon monoxide ND 0.50 % v/v 01/28/20 13:43 1MethaneND 0.50 % v/v 01/28/20 13:43 1Nitrogen78 0.50 % v/v 01/28/20 13:43 1Oxygen + Argon 22 Lab Sample ID: 570-19024-10Client Sample ID: SVP4-5 Matrix: AirDate Collected: 01/27/20 14:59 Date Received: 01/27/20 19:10 RL Carbon dioxide 1.1 0.50 % v/v 01/28/20 14:01 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 0.50 % v/v 01/28/20 14:01 1Carbon monoxide ND 0.50 % v/v 01/28/20 14:01 1MethaneND 0.50 % v/v 01/28/20 14:01 1Nitrogen77 0.50 % v/v 01/28/20 14:01 1Oxygen + Argon 22 Lab Sample ID: 570-19024-11Client Sample ID: SVP4-10 Matrix: AirDate Collected: 01/27/20 15:12 Date Received: 01/27/20 19:10 RL Carbon dioxide 0.82 0.50 % v/v 01/28/20 14:19 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 0.50 % v/v 01/28/20 14:19 1Carbon monoxide ND Eurofins Calscience LLC Page 34 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Method: Fixed Gas Norm - Fixed Gases from Stationary Sources (Continued) Lab Sample ID: 570-19024-11Client Sample ID: SVP4-10 Matrix: AirDate Collected: 01/27/20 15:12 Date Received: 01/27/20 19:10 RL Methane ND 0.50 % v/v 01/28/20 14:19 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 0.50 % v/v 01/28/20 14:19 1Nitrogen77 0.50 % v/v 01/28/20 14:19 1Oxygen + Argon 22 Lab Sample ID: 570-19024-12Client Sample ID: SVP4-19.5 Matrix: AirDate Collected: 01/27/20 15:27 Date Received: 01/27/20 19:10 RL Carbon dioxide 1.3 0.50 % v/v 01/28/20 14:37 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 0.50 % v/v 01/28/20 14:37 1Carbon monoxide ND 0.50 % v/v 01/28/20 14:37 1MethaneND 0.50 % v/v 01/28/20 14:37 1Nitrogen78 0.50 % v/v 01/28/20 14:37 1Oxygen + Argon 21 Lab Sample ID: 570-19024-13Client Sample ID: SVP5-5 Matrix: AirDate Collected: 01/27/20 15:48 Date Received: 01/27/20 19:10 RL Carbon dioxide 0.68 0.50 % v/v 01/28/20 14:54 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 0.50 % v/v 01/28/20 14:54 1Carbon monoxide ND 0.50 % v/v 01/28/20 14:54 1MethaneND 0.50 % v/v 01/28/20 14:54 1Nitrogen77 0.50 % v/v 01/28/20 14:54 1Oxygen + Argon 22 Lab Sample ID: 570-19024-14Client Sample ID: SVP5-10 Matrix: AirDate Collected: 01/27/20 16:08 Date Received: 01/27/20 19:10 RL Carbon dioxide ND 0.50 % v/v 01/28/20 15:12 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 0.50 % v/v 01/28/20 15:12 1Carbon monoxide ND 0.50 % v/v 01/28/20 15:12 1MethaneND 0.50 % v/v 01/28/20 15:12 1Nitrogen77 0.50 % v/v 01/28/20 15:12 1Oxygen + Argon 23 Lab Sample ID: 570-19024-15Client Sample ID: SVP5-15 Matrix: AirDate Collected: 01/27/20 16:24 Date Received: 01/27/20 19:10 RL Carbon dioxide ND 0.50 % v/v 01/28/20 15:30 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 0.50 % v/v 01/28/20 15:30 1Carbon monoxide ND 0.50 % v/v 01/28/20 15:30 1MethaneND 0.50 % v/v 01/28/20 15:30 1Nitrogen77 0.50 % v/v 01/28/20 15:30 1Oxygen + Argon 23 Eurofins Calscience LLC Page 35 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Surrogate Summary Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Method: TO-15 - Volatile Organic Compounds in Ambient Air Prep Type: Total/NAMatrix: Air Lab Sample ID Client Sample ID (47-137) (57-129) (78-156) DCA BFB TOL 114 101 102570-19024-1 Percent Surrogate Recovery (Acceptance Limits) SVP1-5 118 100 101570-19024-2 SVP1-10 111 100 100570-19024-3 SVP1-19.5 111 102 98570-19024-4 SVP2-5 110 102 100570-19024-5 SVP2-10 110 100 100570-19024-6 SVP2-19.5 112 102 103570-19024-7 SVP3-5 110 103 99570-19024-8 SVP3-10 118 102 97570-19024-9 SVP3-19.5 110 103 100570-19024-10 SVP4-5 100 113 96570-19024-11 SVP4-10 110 115 102570-19024-12 SVP4-19.5 103 102 97570-19024-13 SVP5-5 109 100 97570-19024-14 SVP5-10 105 108 98570-19024-15 SVP5-15 101 97 105LCS 570-46977/3 Lab Control Sample 112 95 98LCS 570-47027/3 Lab Control Sample 107 97 102LCS 570-47256/3 Lab Control Sample 88 93 97LCS 570-47260/3 Lab Control Sample 109 91 102LCSD 570-46977/4 Lab Control Sample Dup 111 95 97LCSD 570-47027/4 Lab Control Sample Dup 102 88 94LCSD 570-47256/4 Lab Control Sample Dup 91 93 98LCSD 570-47260/4 Lab Control Sample Dup 97 94 96MB 570-46977/5 Method Blank 113 99 97MB 570-47027/6 Method Blank 100 100 96MB 570-47256/5 Method Blank 100 93 97MB 570-47260/6 Method Blank Surrogate Legend DCA = 1,2-Dichloroethane-d4 (Surr) BFB = 4-Bromofluorobenzene (Surr) TOL = Toluene-d8 (Surr) Eurofins Calscience LLC Page 36 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Method: TO-15 - Volatile Organic Compounds in Ambient Air Client Sample ID: Method BlankLab Sample ID: MB 570-46977/5 Matrix: Air Prep Type: Total/NA Analysis Batch: 46977 RL 1,1,1-Trichloroethane ND 2.7 ug/m3 01/28/20 12:53 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 6.9 ug/m3 01/28/20 12:53 11,1,2,2-Tetrachloroethane ND 11 ug/m3 01/28/20 12:53 11,1,2-Trichloro-1,2,2-trifluoroethane ND 2.7 ug/m3 01/28/20 12:53 11,1,2-Trichloroethane ND 2.0 ug/m3 01/28/20 12:53 11,1-Dichloroethane ND 2.0 ug/m3 01/28/20 12:53 11,1-Dichloroethene ND 5.4 ug/m3 01/28/20 12:53 11,1-Difluoroethane ND 15 ug/m3 01/28/20 12:53 11,2,4-Trichlorobenzene ND 7.4 ug/m3 01/28/20 12:53 11,2,4-Trimethylbenzene ND 14 ug/m3 01/28/20 12:53 11,2-Dibromo-3-Chloropropane ND 3.8 ug/m3 01/28/20 12:53 11,2-Dibromoethane ND 3.0 ug/m3 01/28/20 12:53 11,2-Dichlorobenzene ND 2.0 ug/m3 01/28/20 12:53 11,2-Dichloroethane ND 2.3 ug/m3 01/28/20 12:53 11,2-Dichloropropane ND 2.5 ug/m3 01/28/20 12:53 11,3,5-Trimethylbenzene ND 3.0 ug/m3 01/28/20 12:53 11,3-Dichlorobenzene ND 3.0 ug/m3 01/28/20 12:53 11,4-Dichlorobenzene ND 4.4 ug/m3 01/28/20 12:53 12-Butanone ND 6.1 ug/m3 01/28/20 12:53 12-Hexanone ND 2.5 ug/m3 01/28/20 12:53 14-Ethyltoluene ND 6.1 ug/m3 01/28/20 12:53 14-Methyl-2-pentanone ND 12 ug/m3 01/28/20 12:53 1Acetone ND 1.6 ug/m3 01/28/20 12:53 1Benzene ND 7.8 ug/m3 01/28/20 12:53 1Benzyl chloride ND 3.4 ug/m3 01/28/20 12:53 1Bromodichloromethane ND 5.2 ug/m3 01/28/20 12:53 1Bromoform ND 1.9 ug/m3 01/28/20 12:53 1Bromomethane ND 2.0 ug/m3 01/28/20 12:53 1cis-1,2-Dichloroethene ND 2.3 ug/m3 01/28/20 12:53 1cis-1,3-Dichloropropene ND 16 ug/m3 01/28/20 12:53 1Carbon disulfide ND 3.1 ug/m3 01/28/20 12:53 1Carbon tetrachloride ND 2.3 ug/m3 01/28/20 12:53 1Chlorobenzene ND 1.3 ug/m3 01/28/20 12:53 1Chloroethane ND 2.4 ug/m3 01/28/20 12:53 1Chloroform ND 1.0 ug/m3 01/28/20 12:53 1Chloromethane ND 4.3 ug/m3 01/28/20 12:53 1Dibromochloromethane ND 2.5 ug/m3 01/28/20 12:53 1Dichlorodifluoromethane ND 14 ug/m3 01/28/20 12:53 1Dichlorotetrafluoroethane ND 2.2 ug/m3 01/28/20 12:53 1Ethylbenzene ND 16 ug/m3 01/28/20 12:53 1Hexachloro-1,3-butadiene ND 120 ug/m3 01/28/20 12:53 1Isopropanol ND 17 ug/m3 01/28/20 12:53 1Methylene Chloride ND 7.2 ug/m3 01/28/20 12:53 1Methyl-t-Butyl Ether (MTBE) ND 8.2 ug/m3 01/28/20 12:53 1n-Butylbenzene ND 2.2 ug/m3 01/28/20 12:53 1o-Xylene ND 8.7 ug/m3 01/28/20 12:53 1m,p-Xylene ND 8.2 ug/m3 01/28/20 12:53 1sec-Butylbenzene ND 6.4 ug/m3 01/28/20 12:53 1Styrene Eurofins Calscience LLC Page 37 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Method: TO-15 - Volatile Organic Compounds in Ambient Air (Continued) Client Sample ID: Method BlankLab Sample ID: MB 570-46977/5 Matrix: Air Prep Type: Total/NA Analysis Batch: 46977 RL trans-1,2-Dichloroethene ND 2.0 ug/m3 01/28/20 12:53 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 4.5 ug/m3 01/28/20 12:53 1trans-1,3-Dichloropropene ND 8.2 ug/m3 01/28/20 12:53 1tert-Butylbenzene ND 3.4 ug/m3 01/28/20 12:53 1Tetrachloroethene ND 19 ug/m3 01/28/20 12:53 1Toluene ND 2.7 ug/m3 01/28/20 12:53 1Trichloroethene ND 5.6 ug/m3 01/28/20 12:53 1Trichlorofluoromethane ND 7.0 ug/m3 01/28/20 12:53 1Vinyl acetate ND 1.3 ug/m3 01/28/20 12:53 1Vinyl chloride 1,2-Dichloroethane-d4 (Surr)97 47 -137 01/28/20 12:53 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery 94 01/28/20 12:53 14-Bromofluorobenzene (Surr)57 -129 96 01/28/20 12:53 1Toluene-d8 (Surr)78 -156 Client Sample ID: Lab Control SampleLab Sample ID: LCS 570-46977/3 Matrix: Air Prep Type: Total/NA Analysis Batch: 46977 1,1,1-Trichloroethane 136 140.8 ug/m3 103 50 -150 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec. Limits 1,1,2,2-Tetrachloroethane 172 155.9 ug/m3 91 50 -150 1,1,2-Trichloro-1,2,2-trifluoroetha ne 192 175.5 ug/m3 92 50 -150 1,1,2-Trichloroethane 136 131.5 ug/m3 96 65 -149 1,1-Dichloroethane 101 97.31 ug/m3 96 50 -150 1,1-Dichloroethene 99.1 95.58 ug/m3 96 50 -150 1,1-Difluoroethane 67.5 57.62 ug/m3 85 60 -140 1,2,4-Trichlorobenzene 186 157.3 ug/m3 85 50 -150 1,2,4-Trimethylbenzene 123 110.2 ug/m3 90 50 -150 1,2-Dibromo-3-Chloropropane 242 226.7 ug/m3 94 60 -140 1,2-Dibromoethane 192 189.1 ug/m3 98 54 -144 1,2-Dichlorobenzene 150 140.5 ug/m3 93 34 -160 1,2-Dichloroethane 101 100.6 ug/m3 99 69 -153 1,2-Dichloropropane 116 109.4 ug/m3 95 67 -157 1,3,5-Trimethylbenzene 123 115.0 ug/m3 94 50 -150 1,3-Dichlorobenzene 150 140.5 ug/m3 93 50 -150 1,4-Dichlorobenzene 150 139.1 ug/m3 93 36 -156 2-Butanone 73.7 68.90 ug/m3 93 50 -150 2-Hexanone 102 94.29 ug/m3 92 50 -150 4-Ethyltoluene 123 117.9 ug/m3 96 50 -150 4-Methyl-2-pentanone 102 96.05 ug/m3 94 50 -150 Acetone 59.4 57.74 ug/m3 97 50 -150 Benzene 79.9 85.77 ug/m3 107 60 -156 Benzyl chloride 129 110.4 ug/m3 85 50 -150 Bromodichloromethane 168 171.4 ug/m3 102 50 -150 Bromoform 258 258.7 ug/m3 100 50 -150 Bromomethane 97.1 93.82 ug/m3 97 50 -150 cis-1,2-Dichloroethene 99.1 96.30 ug/m3 97 50 -150 Eurofins Calscience LLC Page 38 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Method: TO-15 - Volatile Organic Compounds in Ambient Air (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 570-46977/3 Matrix: Air Prep Type: Total/NA Analysis Batch: 46977 cis-1,3-Dichloropropene 113 107.0 ug/m3 94 61 -157 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec. Limits Carbon disulfide 77.9 81.33 ug/m3 104 50 -150 Carbon tetrachloride 157 154.3 ug/m3 98 64 -154 Chlorobenzene 115 108.6 ug/m3 94 50 -150 Chloroethane 66.0 59.40 ug/m3 90 50 -150 Chloroform 122 116.2 ug/m3 95 50 -150 Chloromethane 51.6 47.65 ug/m3 92 50 -150 Dibromochloromethane 213 206.4 ug/m3 97 50 -150 Dichlorodifluoromethane 124 127.9 ug/m3 103 50 -150 Dichlorotetrafluoroethane 175 165.1 ug/m3 94 50 -150 Ethylbenzene 109 109.3 ug/m3 101 52 -154 Hexachloro-1,3-butadiene 267 218.6 ug/m3 82 50 -150 Isopropanol 61.5 54.36 J ug/m3 88 50 -150 Methylene Chloride 86.8 79.44 ug/m3 91 50 -150 Methyl-t-Butyl Ether (MTBE)90.1 77.56 ug/m3 86 50 -150 n-Butylbenzene 137 130.5 ug/m3 95 50 -150 o-Xylene 109 106.5 ug/m3 98 52 -148 m,p-Xylene 217 204.1 ug/m3 94 42 -156 sec-Butylbenzene 137 118.6 ug/m3 86 50 -150 Styrene 106 102.2 ug/m3 96 50 -150 trans-1,2-Dichloroethene 99.1 103.0 ug/m3 104 50 -150 trans-1,3-Dichloropropene 113 115.9 ug/m3 102 50 -150 tert-Butylbenzene 137 123.9 ug/m3 90 50 -150 Tetrachloroethene 170 162.2 ug/m3 96 56 -152 Toluene 94.2 90.53 ug/m3 96 56 -146 Trichloroethene 134 128.5 ug/m3 96 63 -159 Trichlorofluoromethane 140 146.2 ug/m3 104 50 -150 Vinyl acetate 88.0 81.00 ug/m3 92 50 -150 Vinyl chloride 63.9 59.42 ug/m3 93 45 -177 1,2-Dichloroethane-d4 (Surr)47 -137 Surrogate 101 LCS LCS Qualifier Limits%Recovery 974-Bromofluorobenzene (Surr)57 -129 105Toluene-d8 (Surr)78 -156 Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 570-46977/4 Matrix: Air Prep Type: Total/NA Analysis Batch: 46977 1,1,1-Trichloroethane 136 143.2 ug/m3 105 50 -150 2 35 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec. Limits LimitRPD RPD 1,1,2,2-Tetrachloroethane 172 145.2 ug/m3 85 50 -150 7 35 1,1,2-Trichloro-1,2,2-trifluoroetha ne 192 189.7 ug/m3 99 50 -150 8 35 1,1,2-Trichloroethane 136 136.2 ug/m3 100 65 -149 3 37 1,1-Dichloroethane 101 104.7 ug/m3 103 50 -150 7 35 1,1-Dichloroethene 99.1 96.65 ug/m3 98 50 -150 1 35 1,1-Difluoroethane 67.5 62.24 ug/m3 92 60 -140 8 30 1,2,4-Trichlorobenzene 186 152.8 ug/m3 82 50 -150 3 35 Eurofins Calscience LLC Page 39 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Method: TO-15 - Volatile Organic Compounds in Ambient Air (Continued) Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 570-46977/4 Matrix: Air Prep Type: Total/NA Analysis Batch: 46977 1,2,4-Trimethylbenzene 123 113.2 ug/m3 92 50 -150 3 35 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec. Limits LimitRPD RPD 1,2-Dibromo-3-Chloropropane 242 206.1 ug/m3 85 60 -140 10 30 1,2-Dibromoethane 192 171.6 ug/m3 89 54 -144 10 36 1,2-Dichlorobenzene 150 136.3 ug/m3 91 34 -160 3 47 1,2-Dichloroethane 101 110.1 ug/m3 109 69 -153 9 35 1,2-Dichloropropane 116 112.3 ug/m3 97 67 -157 3 35 1,3,5-Trimethylbenzene 123 107.9 ug/m3 88 50 -150 6 35 1,3-Dichlorobenzene 150 131.8 ug/m3 88 50 -150 6 35 1,4-Dichlorobenzene 150 131.7 ug/m3 88 36 -156 5 47 2-Butanone 73.7 72.53 ug/m3 98 50 -150 5 35 2-Hexanone 102 98.52 ug/m3 96 50 -150 4 35 4-Ethyltoluene 123 106.8 ug/m3 87 50 -150 10 35 4-Methyl-2-pentanone 102 96.10 ug/m3 94 50 -150 0 35 Acetone 59.4 59.53 ug/m3 100 50 -150 3 35 Benzene 79.9 82.15 ug/m3 103 60 -156 4 40 Benzyl chloride 129 105.1 ug/m3 81 50 -150 5 35 Bromodichloromethane 168 164.7 ug/m3 98 50 -150 4 35 Bromoform 258 244.9 ug/m3 95 50 -150 5 38 Bromomethane 97.1 98.57 ug/m3 102 50 -150 5 35 cis-1,2-Dichloroethene 99.1 103.5 ug/m3 104 50 -150 7 35 cis-1,3-Dichloropropene 113 103.9 ug/m3 92 61 -157 3 35 Carbon disulfide 77.9 87.11 ug/m3 112 50 -150 7 35 Carbon tetrachloride 157 154.9 ug/m3 99 64 -154 0 32 Chlorobenzene 115 106.7 ug/m3 93 50 -150 2 35 Chloroethane 66.0 68.11 ug/m3 103 50 -150 14 35 Chloroform 122 128.6 ug/m3 105 50 -150 10 35 Chloromethane 51.6 49.70 ug/m3 96 50 -150 4 35 Dibromochloromethane 213 197.2 ug/m3 93 50 -150 5 35 Dichlorodifluoromethane 124 135.4 ug/m3 110 50 -150 6 35 Dichlorotetrafluoroethane 175 175.4 ug/m3 100 50 -150 6 35 Ethylbenzene 109 103.1 ug/m3 95 52 -154 6 38 Hexachloro-1,3-butadiene 267 200.4 ug/m3 75 50 -150 9 35 Isopropanol 61.5 57.75 J ug/m3 94 50 -150 6 35 Methylene Chloride 86.8 81.08 ug/m3 93 50 -150 2 35 Methyl-t-Butyl Ether (MTBE)90.1 88.74 ug/m3 98 50 -150 13 35 n-Butylbenzene 137 121.6 ug/m3 89 50 -150 7 30 o-Xylene 109 100.5 ug/m3 93 52 -148 6 38 m,p-Xylene 217 201.9 ug/m3 93 42 -156 1 41 sec-Butylbenzene 137 118.2 ug/m3 86 50 -150 0 30 Styrene 106 96.67 ug/m3 91 50 -150 6 35 trans-1,2-Dichloroethene 99.1 103.9 ug/m3 105 50 -150 1 35 trans-1,3-Dichloropropene 113 116.8 ug/m3 103 50 -150 1 35 tert-Butylbenzene 137 124.4 ug/m3 91 50 -150 0 30 Tetrachloroethene 170 157.8 ug/m3 93 56 -152 3 40 Toluene 94.2 90.71 ug/m3 96 56 -146 0 43 Trichloroethene 134 131.4 ug/m3 98 63 -159 2 34 Trichlorofluoromethane 140 148.4 ug/m3 106 50 -150 1 35 Vinyl acetate 88.0 84.48 ug/m3 96 50 -150 4 35 Vinyl chloride 63.9 61.68 ug/m3 97 45 -177 4 36 Eurofins Calscience LLC Page 40 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Method: TO-15 - Volatile Organic Compounds in Ambient Air (Continued) 1,2-Dichloroethane-d4 (Surr)47 -137 Surrogate 109 LCSD LCSD Qualifier Limits%Recovery 914-Bromofluorobenzene (Surr)57 -129 102Toluene-d8 (Surr)78 -156 Client Sample ID: Method BlankLab Sample ID: MB 570-47027/6 Matrix: Air Prep Type: Total/NA Analysis Batch: 47027 RL 1,1,1-Trichloroethane ND 2.7 ug/m3 01/28/20 14:28 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 6.9 ug/m3 01/28/20 14:28 11,1,2,2-Tetrachloroethane ND 11 ug/m3 01/28/20 14:28 11,1,2-Trichloro-1,2,2-trifluoroethane ND 2.7 ug/m3 01/28/20 14:28 11,1,2-Trichloroethane ND 2.0 ug/m3 01/28/20 14:28 11,1-Dichloroethane ND 2.0 ug/m3 01/28/20 14:28 11,1-Dichloroethene ND 5.4 ug/m3 01/28/20 14:28 11,1-Difluoroethane ND 15 ug/m3 01/28/20 14:28 11,2,4-Trichlorobenzene ND 7.4 ug/m3 01/28/20 14:28 11,2,4-Trimethylbenzene ND 14 ug/m3 01/28/20 14:28 11,2-Dibromo-3-Chloropropane ND 3.8 ug/m3 01/28/20 14:28 11,2-Dibromoethane ND 3.0 ug/m3 01/28/20 14:28 11,2-Dichlorobenzene ND 2.0 ug/m3 01/28/20 14:28 11,2-Dichloroethane ND 2.3 ug/m3 01/28/20 14:28 11,2-Dichloropropane ND 2.5 ug/m3 01/28/20 14:28 11,3,5-Trimethylbenzene ND 3.0 ug/m3 01/28/20 14:28 11,3-Dichlorobenzene ND 3.0 ug/m3 01/28/20 14:28 11,4-Dichlorobenzene ND 4.4 ug/m3 01/28/20 14:28 12-Butanone ND 6.1 ug/m3 01/28/20 14:28 12-Hexanone ND 2.5 ug/m3 01/28/20 14:28 14-Ethyltoluene ND 6.1 ug/m3 01/28/20 14:28 14-Methyl-2-pentanone ND 12 ug/m3 01/28/20 14:28 1Acetone ND 1.6 ug/m3 01/28/20 14:28 1Benzene ND 7.8 ug/m3 01/28/20 14:28 1Benzyl chloride ND 3.4 ug/m3 01/28/20 14:28 1Bromodichloromethane ND 5.2 ug/m3 01/28/20 14:28 1Bromoform ND 1.9 ug/m3 01/28/20 14:28 1Bromomethane ND 2.0 ug/m3 01/28/20 14:28 1cis-1,2-Dichloroethene ND 2.3 ug/m3 01/28/20 14:28 1cis-1,3-Dichloropropene ND 16 ug/m3 01/28/20 14:28 1Carbon disulfide ND 3.1 ug/m3 01/28/20 14:28 1Carbon tetrachloride ND 2.3 ug/m3 01/28/20 14:28 1Chlorobenzene ND 1.3 ug/m3 01/28/20 14:28 1Chloroethane ND 2.4 ug/m3 01/28/20 14:28 1Chloroform ND 1.0 ug/m3 01/28/20 14:28 1Chloromethane ND 4.3 ug/m3 01/28/20 14:28 1Dibromochloromethane ND 2.5 ug/m3 01/28/20 14:28 1Dichlorodifluoromethane ND 14 ug/m3 01/28/20 14:28 1Dichlorotetrafluoroethane ND 2.2 ug/m3 01/28/20 14:28 1Ethylbenzene ND 16 ug/m3 01/28/20 14:28 1Hexachloro-1,3-butadiene ND 120 ug/m3 01/28/20 14:28 1Isopropanol ND 17 ug/m3 01/28/20 14:28 1Methylene Chloride Eurofins Calscience LLC Page 41 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Method: TO-15 - Volatile Organic Compounds in Ambient Air (Continued) Client Sample ID: Method BlankLab Sample ID: MB 570-47027/6 Matrix: Air Prep Type: Total/NA Analysis Batch: 47027 RL Methyl-t-Butyl Ether (MTBE)ND 7.2 ug/m3 01/28/20 14:28 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 8.2 ug/m3 01/28/20 14:28 1n-Butylbenzene ND 2.2 ug/m3 01/28/20 14:28 1o-Xylene ND 8.7 ug/m3 01/28/20 14:28 1m,p-Xylene ND 8.2 ug/m3 01/28/20 14:28 1sec-Butylbenzene ND 6.4 ug/m3 01/28/20 14:28 1Styrene ND 2.0 ug/m3 01/28/20 14:28 1trans-1,2-Dichloroethene ND 4.5 ug/m3 01/28/20 14:28 1trans-1,3-Dichloropropene ND 8.2 ug/m3 01/28/20 14:28 1tert-Butylbenzene ND 3.4 ug/m3 01/28/20 14:28 1Tetrachloroethene ND 19 ug/m3 01/28/20 14:28 1Toluene ND 2.7 ug/m3 01/28/20 14:28 1Trichloroethene ND 5.6 ug/m3 01/28/20 14:28 1Trichlorofluoromethane ND 7.0 ug/m3 01/28/20 14:28 1Vinyl acetate ND 1.3 ug/m3 01/28/20 14:28 1Vinyl chloride 1,2-Dichloroethane-d4 (Surr)113 47 -137 01/28/20 14:28 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery 99 01/28/20 14:28 14-Bromofluorobenzene (Surr)57 -129 97 01/28/20 14:28 1Toluene-d8 (Surr)78 -156 Client Sample ID: Lab Control SampleLab Sample ID: LCS 570-47027/3 Matrix: Air Prep Type: Total/NA Analysis Batch: 47027 1,1,1-Trichloroethane 136 133.8 ug/m3 98 50 -150 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec. Limits 1,1,2,2-Tetrachloroethane 172 144.0 ug/m3 84 50 -150 1,1,2-Trichloro-1,2,2-trifluoroetha ne 192 178.1 ug/m3 93 50 -150 1,1,2-Trichloroethane 136 120.8 ug/m3 89 65 -149 1,1-Dichloroethane 101 94.71 ug/m3 94 50 -150 1,1-Dichloroethene 99.1 89.14 ug/m3 90 50 -150 1,1-Difluoroethane 67.5 64.90 ug/m3 96 60 -140 1,2,4-Trichlorobenzene 186 150.0 ug/m3 81 50 -150 1,2,4-Trimethylbenzene 123 102.5 ug/m3 83 50 -150 1,2-Dibromo-3-Chloropropane 242 206.8 ug/m3 86 60 -140 1,2-Dibromoethane 192 168.8 ug/m3 88 54 -144 1,2-Dichlorobenzene 150 124.1 ug/m3 83 34 -160 1,2-Dichloroethane 101 96.59 ug/m3 95 69 -153 1,2-Dichloropropane 116 100.9 ug/m3 87 67 -157 1,3,5-Trimethylbenzene 123 105.0 ug/m3 85 50 -150 1,3-Dichlorobenzene 150 123.1 ug/m3 82 50 -150 1,4-Dichlorobenzene 150 124.0 ug/m3 83 36 -156 2-Butanone 73.7 66.86 ug/m3 91 50 -150 2-Hexanone 102 89.10 ug/m3 87 50 -150 4-Ethyltoluene 123 104.9 ug/m3 85 50 -150 4-Methyl-2-pentanone 102 88.75 ug/m3 87 50 -150 Acetone 59.4 57.26 ug/m3 96 50 -150 Eurofins Calscience LLC Page 42 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Method: TO-15 - Volatile Organic Compounds in Ambient Air (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 570-47027/3 Matrix: Air Prep Type: Total/NA Analysis Batch: 47027 Benzene 79.9 73.36 ug/m3 92 60 -156 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec. Limits Benzyl chloride 129 105.2 ug/m3 81 50 -150 Bromodichloromethane 168 149.8 ug/m3 89 50 -150 Bromoform 258 229.3 ug/m3 89 50 -150 Bromomethane 97.1 94.06 ug/m3 97 50 -150 cis-1,2-Dichloroethene 99.1 96.78 ug/m3 98 50 -150 cis-1,3-Dichloropropene 113 99.20 ug/m3 87 61 -157 Carbon disulfide 77.9 78.63 ug/m3 101 50 -150 Carbon tetrachloride 157 141.5 ug/m3 90 64 -154 Chlorobenzene 115 98.95 ug/m3 86 50 -150 Chloroethane 66.0 62.71 ug/m3 95 50 -150 Chloroform 122 113.9 ug/m3 93 50 -150 Chloromethane 51.6 49.93 ug/m3 97 50 -150 Dibromochloromethane 213 184.0 ug/m3 86 50 -150 Dichlorodifluoromethane 124 124.3 ug/m3 101 50 -150 Dichlorotetrafluoroethane 175 170.8 ug/m3 98 50 -150 Ethylbenzene 109 98.21 ug/m3 90 52 -154 Hexachloro-1,3-butadiene 267 217.1 ug/m3 81 50 -150 Isopropanol 61.5 51.61 J ug/m3 84 50 -150 Methylene Chloride 86.8 73.84 ug/m3 85 50 -150 Methyl-t-Butyl Ether (MTBE)90.1 86.20 ug/m3 96 50 -150 n-Butylbenzene 137 117.0 ug/m3 85 50 -150 o-Xylene 109 96.22 ug/m3 89 52 -148 m,p-Xylene 217 192.2 ug/m3 89 42 -156 sec-Butylbenzene 137 111.8 ug/m3 81 50 -150 Styrene 106 94.18 ug/m3 88 50 -150 trans-1,2-Dichloroethene 99.1 98.79 ug/m3 100 50 -150 trans-1,3-Dichloropropene 113 103.2 ug/m3 91 50 -150 tert-Butylbenzene 137 115.2 ug/m3 84 50 -150 Tetrachloroethene 170 142.9 ug/m3 84 56 -152 Toluene 94.2 82.95 ug/m3 88 56 -146 Trichloroethene 134 118.8 ug/m3 88 63 -159 Trichlorofluoromethane 140 135.1 ug/m3 96 50 -150 Vinyl acetate 88.0 77.64 ug/m3 88 50 -150 Vinyl chloride 63.9 60.11 ug/m3 94 45 -177 1,2-Dichloroethane-d4 (Surr)47 -137 Surrogate 112 LCS LCS Qualifier Limits%Recovery 954-Bromofluorobenzene (Surr)57 -129 98Toluene-d8 (Surr)78 -156 Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 570-47027/4 Matrix: Air Prep Type: Total/NA Analysis Batch: 47027 1,1,1-Trichloroethane 136 134.3 ug/m3 98 50 -150 0 35 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec. Limits LimitRPD RPD 1,1,2,2-Tetrachloroethane 172 146.1 ug/m3 85 50 -150 1 35 Eurofins Calscience LLC Page 43 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Method: TO-15 - Volatile Organic Compounds in Ambient Air (Continued) Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 570-47027/4 Matrix: Air Prep Type: Total/NA Analysis Batch: 47027 1,1,2-Trichloro-1,2,2-trifluoroetha ne 192 180.5 ug/m3 94 50 -150 1 35 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec. Limits LimitRPD RPD 1,1,2-Trichloroethane 136 122.0 ug/m3 89 65 -149 1 37 1,1-Dichloroethane 101 95.97 ug/m3 95 50 -150 1 35 1,1-Dichloroethene 99.1 90.74 ug/m3 92 50 -150 2 35 1,1-Difluoroethane 67.5 64.24 ug/m3 95 60 -140 1 30 1,2,4-Trichlorobenzene 186 149.2 ug/m3 80 50 -150 0 35 1,2,4-Trimethylbenzene 123 102.9 ug/m3 84 50 -150 0 35 1,2-Dibromo-3-Chloropropane 242 206.5 ug/m3 85 60 -140 0 30 1,2-Dibromoethane 192 171.7 ug/m3 89 54 -144 2 36 1,2-Dichlorobenzene 150 124.4 ug/m3 83 34 -160 0 47 1,2-Dichloroethane 101 96.15 ug/m3 95 69 -153 0 35 1,2-Dichloropropane 116 101.7 ug/m3 88 67 -157 1 35 1,3,5-Trimethylbenzene 123 105.8 ug/m3 86 50 -150 1 35 1,3-Dichlorobenzene 150 122.8 ug/m3 82 50 -150 0 35 1,4-Dichlorobenzene 150 124.5 ug/m3 83 36 -156 0 47 2-Butanone 73.7 68.79 ug/m3 93 50 -150 3 35 2-Hexanone 102 88.62 ug/m3 86 50 -150 1 35 4-Ethyltoluene 123 106.0 ug/m3 86 50 -150 1 35 4-Methyl-2-pentanone 102 89.20 ug/m3 87 50 -150 1 35 Acetone 59.4 58.27 ug/m3 98 50 -150 2 35 Benzene 79.9 74.27 ug/m3 93 60 -156 1 40 Benzyl chloride 129 104.7 ug/m3 81 50 -150 0 35 Bromodichloromethane 168 150.9 ug/m3 90 50 -150 1 35 Bromoform 258 230.5 ug/m3 89 50 -150 1 38 Bromomethane 97.1 95.09 ug/m3 98 50 -150 1 35 cis-1,2-Dichloroethene 99.1 98.54 ug/m3 99 50 -150 2 35 cis-1,3-Dichloropropene 113 100.4 ug/m3 88 61 -157 1 35 Carbon disulfide 77.9 79.48 ug/m3 102 50 -150 1 35 Carbon tetrachloride 157 141.8 ug/m3 90 64 -154 0 32 Chlorobenzene 115 100.5 ug/m3 87 50 -150 2 35 Chloroethane 66.0 63.58 ug/m3 96 50 -150 1 35 Chloroform 122 115.2 ug/m3 94 50 -150 1 35 Chloromethane 51.6 49.58 ug/m3 96 50 -150 1 35 Dibromochloromethane 213 187.7 ug/m3 88 50 -150 2 35 Dichlorodifluoromethane 124 122.6 ug/m3 99 50 -150 1 35 Dichlorotetrafluoroethane 175 172.5 ug/m3 99 50 -150 1 35 Ethylbenzene 109 98.65 ug/m3 91 52 -154 0 38 Hexachloro-1,3-butadiene 267 213.3 ug/m3 80 50 -150 2 35 Isopropanol 61.5 53.38 J ug/m3 87 50 -150 3 35 Methylene Chloride 86.8 77.31 ug/m3 89 50 -150 5 35 Methyl-t-Butyl Ether (MTBE)90.1 87.66 ug/m3 97 50 -150 2 35 n-Butylbenzene 137 116.3 ug/m3 85 50 -150 1 30 o-Xylene 109 97.35 ug/m3 90 52 -148 1 38 m,p-Xylene 217 193.8 ug/m3 89 42 -156 1 41 sec-Butylbenzene 137 112.0 ug/m3 82 50 -150 0 30 Styrene 106 95.96 ug/m3 90 50 -150 2 35 trans-1,2-Dichloroethene 99.1 99.73 ug/m3 101 50 -150 1 35 trans-1,3-Dichloropropene 113 103.5 ug/m3 91 50 -150 0 35 Eurofins Calscience LLC Page 44 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Method: TO-15 - Volatile Organic Compounds in Ambient Air (Continued) Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 570-47027/4 Matrix: Air Prep Type: Total/NA Analysis Batch: 47027 tert-Butylbenzene 137 115.7 ug/m3 84 50 -150 0 30 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec. Limits LimitRPD RPD Tetrachloroethene 170 144.7 ug/m3 85 56 -152 1 40 Toluene 94.2 83.98 ug/m3 89 56 -146 1 43 Trichloroethene 134 120.4 ug/m3 90 63 -159 1 34 Trichlorofluoromethane 140 136.2 ug/m3 97 50 -150 1 35 Vinyl acetate 88.0 79.37 ug/m3 90 50 -150 2 35 Vinyl chloride 63.9 60.59 ug/m3 95 45 -177 1 36 1,2-Dichloroethane-d4 (Surr)47 -137 Surrogate 111 LCSD LCSD Qualifier Limits%Recovery 954-Bromofluorobenzene (Surr)57 -129 97Toluene-d8 (Surr)78 -156 Client Sample ID: Method BlankLab Sample ID: MB 570-47256/5 Matrix: Air Prep Type: Total/NA Analysis Batch: 47256 RL 1,1,1-Trichloroethane ND 2.7 ug/m3 01/29/20 13:05 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 6.9 ug/m3 01/29/20 13:05 11,1,2,2-Tetrachloroethane ND 11 ug/m3 01/29/20 13:05 11,1,2-Trichloro-1,2,2-trifluoroethane ND 2.7 ug/m3 01/29/20 13:05 11,1,2-Trichloroethane ND 2.0 ug/m3 01/29/20 13:05 11,1-Dichloroethane ND 2.0 ug/m3 01/29/20 13:05 11,1-Dichloroethene ND 5.4 ug/m3 01/29/20 13:05 11,1-Difluoroethane ND 15 ug/m3 01/29/20 13:05 11,2,4-Trichlorobenzene ND 7.4 ug/m3 01/29/20 13:05 11,2,4-Trimethylbenzene ND 14 ug/m3 01/29/20 13:05 11,2-Dibromo-3-Chloropropane ND 3.8 ug/m3 01/29/20 13:05 11,2-Dibromoethane ND 3.0 ug/m3 01/29/20 13:05 11,2-Dichlorobenzene ND 2.0 ug/m3 01/29/20 13:05 11,2-Dichloroethane ND 2.3 ug/m3 01/29/20 13:05 11,2-Dichloropropane ND 2.5 ug/m3 01/29/20 13:05 11,3,5-Trimethylbenzene ND 3.0 ug/m3 01/29/20 13:05 11,3-Dichlorobenzene ND 3.0 ug/m3 01/29/20 13:05 11,4-Dichlorobenzene ND 4.4 ug/m3 01/29/20 13:05 12-Butanone ND 6.1 ug/m3 01/29/20 13:05 12-Hexanone ND 2.5 ug/m3 01/29/20 13:05 14-Ethyltoluene ND 6.1 ug/m3 01/29/20 13:05 14-Methyl-2-pentanone ND 12 ug/m3 01/29/20 13:05 1Acetone ND 1.6 ug/m3 01/29/20 13:05 1Benzene ND 7.8 ug/m3 01/29/20 13:05 1Benzyl chloride ND 3.4 ug/m3 01/29/20 13:05 1Bromodichloromethane ND 5.2 ug/m3 01/29/20 13:05 1Bromoform ND 1.9 ug/m3 01/29/20 13:05 1Bromomethane ND 2.0 ug/m3 01/29/20 13:05 1cis-1,2-Dichloroethene ND 2.3 ug/m3 01/29/20 13:05 1cis-1,3-Dichloropropene ND 16 ug/m3 01/29/20 13:05 1Carbon disulfide Eurofins Calscience LLC Page 45 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Method: TO-15 - Volatile Organic Compounds in Ambient Air (Continued) Client Sample ID: Method BlankLab Sample ID: MB 570-47256/5 Matrix: Air Prep Type: Total/NA Analysis Batch: 47256 RL Carbon tetrachloride ND 3.1 ug/m3 01/29/20 13:05 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 2.3 ug/m3 01/29/20 13:05 1Chlorobenzene ND 1.3 ug/m3 01/29/20 13:05 1Chloroethane ND 2.4 ug/m3 01/29/20 13:05 1Chloroform ND 1.0 ug/m3 01/29/20 13:05 1Chloromethane ND 4.3 ug/m3 01/29/20 13:05 1Dibromochloromethane ND 2.5 ug/m3 01/29/20 13:05 1Dichlorodifluoromethane ND 14 ug/m3 01/29/20 13:05 1Dichlorotetrafluoroethane ND 2.2 ug/m3 01/29/20 13:05 1Ethylbenzene ND 16 ug/m3 01/29/20 13:05 1Hexachloro-1,3-butadiene ND 120 ug/m3 01/29/20 13:05 1Isopropanol ND 17 ug/m3 01/29/20 13:05 1Methylene Chloride ND 7.2 ug/m3 01/29/20 13:05 1Methyl-t-Butyl Ether (MTBE) ND 8.2 ug/m3 01/29/20 13:05 1n-Butylbenzene ND 2.2 ug/m3 01/29/20 13:05 1o-Xylene ND 8.7 ug/m3 01/29/20 13:05 1m,p-Xylene ND 8.2 ug/m3 01/29/20 13:05 1sec-Butylbenzene ND 6.4 ug/m3 01/29/20 13:05 1Styrene ND 2.0 ug/m3 01/29/20 13:05 1trans-1,2-Dichloroethene ND 4.5 ug/m3 01/29/20 13:05 1trans-1,3-Dichloropropene ND 8.2 ug/m3 01/29/20 13:05 1tert-Butylbenzene ND 3.4 ug/m3 01/29/20 13:05 1Tetrachloroethene ND 19 ug/m3 01/29/20 13:05 1Toluene ND 2.7 ug/m3 01/29/20 13:05 1Trichloroethene ND 5.6 ug/m3 01/29/20 13:05 1Trichlorofluoromethane ND 7.0 ug/m3 01/29/20 13:05 1Vinyl acetate ND 1.3 ug/m3 01/29/20 13:05 1Vinyl chloride 1,2-Dichloroethane-d4 (Surr)100 47 -137 01/29/20 13:05 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery 100 01/29/20 13:05 14-Bromofluorobenzene (Surr)57 -129 96 01/29/20 13:05 1Toluene-d8 (Surr)78 -156 Client Sample ID: Lab Control SampleLab Sample ID: LCS 570-47256/3 Matrix: Air Prep Type: Total/NA Analysis Batch: 47256 1,1,1-Trichloroethane 136 157.7 ug/m3 116 50 -150 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec. Limits 1,1,2,2-Tetrachloroethane 172 158.5 ug/m3 92 50 -150 1,1,2-Trichloro-1,2,2-trifluoroetha ne 192 199.7 ug/m3 104 50 -150 1,1,2-Trichloroethane 136 131.9 ug/m3 97 65 -149 1,1-Dichloroethane 101 109.6 ug/m3 108 50 -150 1,1-Dichloroethene 99.1 109.6 ug/m3 111 50 -150 1,1-Difluoroethane 67.5 62.71 ug/m3 93 60 -140 1,2,4-Trichlorobenzene 186 159.2 ug/m3 86 50 -150 1,2,4-Trimethylbenzene 123 117.3 ug/m3 95 50 -150 1,2-Dibromo-3-Chloropropane 242 218.1 ug/m3 90 60 -140 Eurofins Calscience LLC Page 46 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Method: TO-15 - Volatile Organic Compounds in Ambient Air (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 570-47256/3 Matrix: Air Prep Type: Total/NA Analysis Batch: 47256 1,2-Dibromoethane 192 185.3 ug/m3 96 54 -144 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec. Limits 1,2-Dichlorobenzene 150 150.0 ug/m3 100 34 -160 1,2-Dichloroethane 101 120.5 ug/m3 119 69 -153 1,2-Dichloropropane 116 107.1 ug/m3 93 67 -157 1,3,5-Trimethylbenzene 123 120.1 ug/m3 98 50 -150 1,3-Dichlorobenzene 150 147.8 ug/m3 98 50 -150 1,4-Dichlorobenzene 150 145.7 ug/m3 97 36 -156 2-Butanone 73.7 73.99 ug/m3 100 50 -150 2-Hexanone 102 97.54 ug/m3 95 50 -150 4-Ethyltoluene 123 119.4 ug/m3 97 50 -150 4-Methyl-2-pentanone 102 90.30 ug/m3 88 50 -150 Acetone 59.4 66.16 ug/m3 111 50 -150 Benzene 79.9 83.46 ug/m3 104 60 -156 Benzyl chloride 129 115.1 ug/m3 89 50 -150 Bromodichloromethane 168 168.8 ug/m3 101 50 -150 Bromoform 258 260.0 ug/m3 101 50 -150 Bromomethane 97.1 109.9 ug/m3 113 50 -150 cis-1,2-Dichloroethene 99.1 105.7 ug/m3 107 50 -150 cis-1,3-Dichloropropene 113 99.92 ug/m3 88 61 -157 Carbon disulfide 77.9 90.43 ug/m3 116 50 -150 Carbon tetrachloride 157 166.1 ug/m3 106 64 -154 Chlorobenzene 115 107.4 ug/m3 93 50 -150 Chloroethane 66.0 66.29 ug/m3 100 50 -150 Chloroform 122 132.3 ug/m3 108 50 -150 Chloromethane 51.6 51.44 ug/m3 100 50 -150 Dibromochloromethane 213 213.7 ug/m3 100 50 -150 Dichlorodifluoromethane 124 154.7 ug/m3 125 50 -150 Dichlorotetrafluoroethane 175 184.9 ug/m3 106 50 -150 Ethylbenzene 109 106.7 ug/m3 98 52 -154 Hexachloro-1,3-butadiene 267 222.0 ug/m3 83 50 -150 Isopropanol 61.5 60.80 J ug/m3 99 50 -150 Methylene Chloride 86.8 89.74 ug/m3 103 50 -150 Methyl-t-Butyl Ether (MTBE)90.1 97.27 ug/m3 108 50 -150 n-Butylbenzene 137 127.2 ug/m3 93 50 -150 o-Xylene 109 105.5 ug/m3 97 52 -148 m,p-Xylene 217 202.5 ug/m3 93 42 -156 sec-Butylbenzene 137 123.1 ug/m3 90 50 -150 Styrene 106 103.3 ug/m3 97 50 -150 trans-1,2-Dichloroethene 99.1 105.5 ug/m3 106 50 -150 trans-1,3-Dichloropropene 113 112.6 ug/m3 99 50 -150 tert-Butylbenzene 137 129.8 ug/m3 95 50 -150 Tetrachloroethene 170 166.6 ug/m3 98 56 -152 Toluene 94.2 90.65 ug/m3 96 56 -146 Trichloroethene 134 133.2 ug/m3 99 63 -159 Trichlorofluoromethane 140 174.7 ug/m3 124 50 -150 Vinyl acetate 88.0 87.91 ug/m3 100 50 -150 Vinyl chloride 63.9 63.56 ug/m3 99 45 -177 Eurofins Calscience LLC Page 47 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Method: TO-15 - Volatile Organic Compounds in Ambient Air (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 570-47256/3 Matrix: Air Prep Type: Total/NA Analysis Batch: 47256 1,2-Dichloroethane-d4 (Surr)47 -137 Surrogate 107 LCS LCS Qualifier Limits%Recovery 974-Bromofluorobenzene (Surr)57 -129 102Toluene-d8 (Surr)78 -156 Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 570-47256/4 Matrix: Air Prep Type: Total/NA Analysis Batch: 47256 1,1,1-Trichloroethane 136 146.1 ug/m3 107 50 -150 8 35 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec. Limits LimitRPD RPD 1,1,2,2-Tetrachloroethane 172 148.9 ug/m3 87 50 -150 6 35 1,1,2-Trichloro-1,2,2-trifluoroetha ne 192 179.6 ug/m3 94 50 -150 11 35 1,1,2-Trichloroethane 136 127.7 ug/m3 94 65 -149 3 37 1,1-Dichloroethane 101 101.0 ug/m3 100 50 -150 8 35 1,1-Dichloroethene 99.1 95.88 ug/m3 97 50 -150 13 35 1,1-Difluoroethane 67.5 57.53 ug/m3 85 60 -140 9 30 1,2,4-Trichlorobenzene 186 154.8 ug/m3 83 50 -150 3 35 1,2,4-Trimethylbenzene 123 109.9 ug/m3 89 50 -150 6 35 1,2-Dibromo-3-Chloropropane 242 210.8 ug/m3 87 60 -140 3 30 1,2-Dibromoethane 192 176.8 ug/m3 92 54 -144 5 36 1,2-Dichlorobenzene 150 135.3 ug/m3 90 34 -160 10 47 1,2-Dichloroethane 101 110.3 ug/m3 109 69 -153 9 35 1,2-Dichloropropane 116 108.1 ug/m3 94 67 -157 1 35 1,3,5-Trimethylbenzene 123 108.8 ug/m3 89 50 -150 10 35 1,3-Dichlorobenzene 150 134.3 ug/m3 89 50 -150 10 35 1,4-Dichlorobenzene 150 135.7 ug/m3 90 36 -156 7 47 2-Butanone 73.7 71.22 ug/m3 97 50 -150 4 35 2-Hexanone 102 84.75 ug/m3 83 50 -150 14 35 4-Ethyltoluene 123 108.1 ug/m3 88 50 -150 10 35 4-Methyl-2-pentanone 102 89.75 ug/m3 88 50 -150 1 35 Acetone 59.4 57.16 ug/m3 96 50 -150 15 35 Benzene 79.9 79.68 ug/m3 100 60 -156 5 40 Benzyl chloride 129 103.3 ug/m3 80 50 -150 11 35 Bromodichloromethane 168 167.6 ug/m3 100 50 -150 1 35 Bromoform 258 251.6 ug/m3 97 50 -150 3 38 Bromomethane 97.1 95.35 ug/m3 98 50 -150 14 35 cis-1,2-Dichloroethene 99.1 98.87 ug/m3 100 50 -150 7 35 cis-1,3-Dichloropropene 113 102.1 ug/m3 90 61 -157 2 35 Carbon disulfide 77.9 80.50 ug/m3 103 50 -150 12 35 Carbon tetrachloride 157 159.7 ug/m3 102 64 -154 4 32 Chlorobenzene 115 104.3 ug/m3 91 50 -150 3 35 Chloroethane 66.0 62.40 ug/m3 95 50 -150 6 35 Chloroform 122 128.8 ug/m3 106 50 -150 3 35 Chloromethane 51.6 45.86 ug/m3 89 50 -150 11 35 Dibromochloromethane 213 200.3 ug/m3 94 50 -150 6 35 Dichlorodifluoromethane 124 136.1 ug/m3 110 50 -150 13 35 Dichlorotetrafluoroethane 175 169.4 ug/m3 97 50 -150 9 35 Ethylbenzene 109 100.7 ug/m3 93 52 -154 6 38 Eurofins Calscience LLC Page 48 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Method: TO-15 - Volatile Organic Compounds in Ambient Air (Continued) Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 570-47256/4 Matrix: Air Prep Type: Total/NA Analysis Batch: 47256 Hexachloro-1,3-butadiene 267 202.0 ug/m3 76 50 -150 9 35 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec. Limits LimitRPD RPD Isopropanol 61.5 54.05 J ug/m3 88 50 -150 12 35 Methylene Chloride 86.8 81.04 ug/m3 93 50 -150 10 35 Methyl-t-Butyl Ether (MTBE)90.1 91.37 ug/m3 101 50 -150 6 35 n-Butylbenzene 137 112.9 ug/m3 82 50 -150 12 30 o-Xylene 109 101.3 ug/m3 93 52 -148 4 38 m,p-Xylene 217 198.1 ug/m3 91 42 -156 2 41 sec-Butylbenzene 137 112.0 ug/m3 82 50 -150 9 30 Styrene 106 96.77 ug/m3 91 50 -150 7 35 trans-1,2-Dichloroethene 99.1 103.6 ug/m3 104 50 -150 2 35 trans-1,3-Dichloropropene 113 110.5 ug/m3 97 50 -150 2 35 tert-Butylbenzene 137 120.4 ug/m3 88 50 -150 7 30 Tetrachloroethene 170 155.2 ug/m3 92 56 -152 7 40 Toluene 94.2 86.12 ug/m3 91 56 -146 5 43 Trichloroethene 134 128.1 ug/m3 95 63 -159 4 34 Trichlorofluoromethane 140 158.8 ug/m3 113 50 -150 10 35 Vinyl acetate 88.0 80.79 ug/m3 92 50 -150 8 35 Vinyl chloride 63.9 58.57 ug/m3 92 45 -177 8 36 1,2-Dichloroethane-d4 (Surr)47 -137 Surrogate 102 LCSD LCSD Qualifier Limits%Recovery 884-Bromofluorobenzene (Surr)57 -129 94Toluene-d8 (Surr)78 -156 Client Sample ID: Method BlankLab Sample ID: MB 570-47260/6 Matrix: Air Prep Type: Total/NA Analysis Batch: 47260 RL 1,1,1-Trichloroethane ND 2.7 ug/m3 01/29/20 13:48 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 6.9 ug/m3 01/29/20 13:48 11,1,2,2-Tetrachloroethane ND 11 ug/m3 01/29/20 13:48 11,1,2-Trichloro-1,2,2-trifluoroethane ND 2.7 ug/m3 01/29/20 13:48 11,1,2-Trichloroethane ND 2.0 ug/m3 01/29/20 13:48 11,1-Dichloroethane ND 2.0 ug/m3 01/29/20 13:48 11,1-Dichloroethene ND 5.4 ug/m3 01/29/20 13:48 11,1-Difluoroethane ND 15 ug/m3 01/29/20 13:48 11,2,4-Trichlorobenzene ND 7.4 ug/m3 01/29/20 13:48 11,2,4-Trimethylbenzene ND 14 ug/m3 01/29/20 13:48 11,2-Dibromo-3-Chloropropane ND 3.8 ug/m3 01/29/20 13:48 11,2-Dibromoethane ND 3.0 ug/m3 01/29/20 13:48 11,2-Dichlorobenzene ND 2.0 ug/m3 01/29/20 13:48 11,2-Dichloroethane ND 2.3 ug/m3 01/29/20 13:48 11,2-Dichloropropane ND 2.5 ug/m3 01/29/20 13:48 11,3,5-Trimethylbenzene ND 3.0 ug/m3 01/29/20 13:48 11,3-Dichlorobenzene ND 3.0 ug/m3 01/29/20 13:48 11,4-Dichlorobenzene ND 4.4 ug/m3 01/29/20 13:48 12-Butanone ND 6.1 ug/m3 01/29/20 13:48 12-Hexanone Eurofins Calscience LLC Page 49 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Method: TO-15 - Volatile Organic Compounds in Ambient Air (Continued) Client Sample ID: Method BlankLab Sample ID: MB 570-47260/6 Matrix: Air Prep Type: Total/NA Analysis Batch: 47260 RL 4-Ethyltoluene ND 2.5 ug/m3 01/29/20 13:48 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 6.1 ug/m3 01/29/20 13:48 14-Methyl-2-pentanone ND 12 ug/m3 01/29/20 13:48 1Acetone ND 1.6 ug/m3 01/29/20 13:48 1Benzene ND 7.8 ug/m3 01/29/20 13:48 1Benzyl chloride ND 3.4 ug/m3 01/29/20 13:48 1Bromodichloromethane ND 5.2 ug/m3 01/29/20 13:48 1Bromoform ND 1.9 ug/m3 01/29/20 13:48 1Bromomethane ND 2.0 ug/m3 01/29/20 13:48 1cis-1,2-Dichloroethene ND 2.3 ug/m3 01/29/20 13:48 1cis-1,3-Dichloropropene ND 16 ug/m3 01/29/20 13:48 1Carbon disulfide ND 3.1 ug/m3 01/29/20 13:48 1Carbon tetrachloride ND 2.3 ug/m3 01/29/20 13:48 1Chlorobenzene ND 1.3 ug/m3 01/29/20 13:48 1Chloroethane ND 2.4 ug/m3 01/29/20 13:48 1Chloroform ND 1.0 ug/m3 01/29/20 13:48 1Chloromethane ND 4.3 ug/m3 01/29/20 13:48 1Dibromochloromethane ND 2.5 ug/m3 01/29/20 13:48 1Dichlorodifluoromethane ND 14 ug/m3 01/29/20 13:48 1Dichlorotetrafluoroethane ND 2.2 ug/m3 01/29/20 13:48 1Ethylbenzene ND 16 ug/m3 01/29/20 13:48 1Hexachloro-1,3-butadiene ND 120 ug/m3 01/29/20 13:48 1Isopropanol ND 17 ug/m3 01/29/20 13:48 1Methylene Chloride ND 7.2 ug/m3 01/29/20 13:48 1Methyl-t-Butyl Ether (MTBE) ND 8.2 ug/m3 01/29/20 13:48 1n-Butylbenzene ND 2.2 ug/m3 01/29/20 13:48 1o-Xylene ND 8.7 ug/m3 01/29/20 13:48 1m,p-Xylene ND 8.2 ug/m3 01/29/20 13:48 1sec-Butylbenzene ND 6.4 ug/m3 01/29/20 13:48 1Styrene ND 2.0 ug/m3 01/29/20 13:48 1trans-1,2-Dichloroethene ND 4.5 ug/m3 01/29/20 13:48 1trans-1,3-Dichloropropene ND 8.2 ug/m3 01/29/20 13:48 1tert-Butylbenzene ND 3.4 ug/m3 01/29/20 13:48 1Tetrachloroethene ND 19 ug/m3 01/29/20 13:48 1Toluene ND 2.7 ug/m3 01/29/20 13:48 1Trichloroethene ND 5.6 ug/m3 01/29/20 13:48 1Trichlorofluoromethane ND 7.0 ug/m3 01/29/20 13:48 1Vinyl acetate ND 1.3 ug/m3 01/29/20 13:48 1Vinyl chloride 1,2-Dichloroethane-d4 (Surr)100 47 -137 01/29/20 13:48 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery 93 01/29/20 13:48 14-Bromofluorobenzene (Surr)57 -129 97 01/29/20 13:48 1Toluene-d8 (Surr)78 -156 Eurofins Calscience LLC Page 50 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Method: TO-15 - Volatile Organic Compounds in Ambient Air (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 570-47260/3 Matrix: Air Prep Type: Total/NA Analysis Batch: 47260 1,1,1-Trichloroethane 136 114.2 ug/m3 84 50 -150 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec. Limits 1,1,2,2-Tetrachloroethane 172 155.1 ug/m3 90 50 -150 1,1,2-Trichloro-1,2,2-trifluoroetha ne 192 185.1 ug/m3 97 50 -150 1,1,2-Trichloroethane 136 121.2 ug/m3 89 65 -149 1,1-Dichloroethane 101 95.24 ug/m3 94 50 -150 1,1-Dichloroethene 99.1 92.11 ug/m3 93 50 -150 1,1-Difluoroethane 67.5 47.92 ug/m3 71 60 -140 1,2,4-Trichlorobenzene 186 131.1 ug/m3 71 50 -150 1,2,4-Trimethylbenzene 123 107.4 ug/m3 87 50 -150 1,2-Dibromo-3-Chloropropane 242 190.4 ug/m3 79 60 -140 1,2-Dibromoethane 192 177.9 ug/m3 93 54 -144 1,2-Dichlorobenzene 150 125.9 ug/m3 84 34 -160 1,2-Dichloroethane 101 84.88 ug/m3 84 69 -153 1,2-Dichloropropane 116 106.7 ug/m3 92 67 -157 1,3,5-Trimethylbenzene 123 105.9 ug/m3 86 50 -150 1,3-Dichlorobenzene 150 132.3 ug/m3 88 50 -150 1,4-Dichlorobenzene 150 128.4 ug/m3 85 36 -156 2-Butanone 73.7 68.42 ug/m3 93 50 -150 2-Hexanone 102 92.16 ug/m3 90 50 -150 4-Ethyltoluene 123 107.9 ug/m3 88 50 -150 4-Methyl-2-pentanone 102 89.79 ug/m3 88 50 -150 Acetone 59.4 65.49 ug/m3 110 50 -150 Benzene 79.9 79.57 ug/m3 100 60 -156 Benzyl chloride 129 101.2 ug/m3 78 50 -150 Bromodichloromethane 168 144.4 ug/m3 86 50 -150 Bromoform 258 239.2 ug/m3 93 50 -150 Bromomethane 97.1 100.8 ug/m3 104 50 -150 cis-1,2-Dichloroethene 99.1 96.85 ug/m3 98 50 -150 cis-1,3-Dichloropropene 113 96.58 ug/m3 85 61 -157 Carbon disulfide 77.9 90.89 ug/m3 117 50 -150 Carbon tetrachloride 157 124.6 ug/m3 79 64 -154 Chlorobenzene 115 103.3 ug/m3 90 50 -150 Chloroethane 66.0 70.09 ug/m3 106 50 -150 Chloroform 122 111.2 ug/m3 91 50 -150 Chloromethane 51.6 53.43 ug/m3 104 50 -150 Dibromochloromethane 213 189.7 ug/m3 89 50 -150 Dichlorodifluoromethane 124 106.9 ug/m3 86 50 -150 Dichlorotetrafluoroethane 175 169.6 ug/m3 97 50 -150 Ethylbenzene 109 102.6 ug/m3 94 52 -154 Hexachloro-1,3-butadiene 267 193.1 ug/m3 72 50 -150 Isopropanol 61.5 57.76 J ug/m3 94 50 -150 Methylene Chloride 86.8 84.23 ug/m3 97 50 -150 Methyl-t-Butyl Ether (MTBE)90.1 85.75 ug/m3 95 50 -150 n-Butylbenzene 137 109.2 ug/m3 80 50 -150 o-Xylene 109 99.07 ug/m3 91 52 -148 m,p-Xylene 217 207.9 ug/m3 96 42 -156 sec-Butylbenzene 137 111.3 ug/m3 81 50 -150 Styrene 106 97.41 ug/m3 91 50 -150 Eurofins Calscience LLC Page 51 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Method: TO-15 - Volatile Organic Compounds in Ambient Air (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 570-47260/3 Matrix: Air Prep Type: Total/NA Analysis Batch: 47260 trans-1,2-Dichloroethene 99.1 104.1 ug/m3 105 50 -150 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec. Limits trans-1,3-Dichloropropene 113 97.33 ug/m3 86 50 -150 tert-Butylbenzene 137 118.8 ug/m3 87 50 -150 Tetrachloroethene 170 149.7 ug/m3 88 56 -152 Toluene 94.2 92.82 ug/m3 99 56 -146 Trichloroethene 134 120.3 ug/m3 90 63 -159 Trichlorofluoromethane 140 122.9 ug/m3 87 50 -150 Vinyl acetate 88.0 82.65 ug/m3 94 50 -150 Vinyl chloride 63.9 65.32 ug/m3 102 45 -177 1,2-Dichloroethane-d4 (Surr)47 -137 Surrogate 88 LCS LCS Qualifier Limits%Recovery 934-Bromofluorobenzene (Surr)57 -129 97Toluene-d8 (Surr)78 -156 Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 570-47260/4 Matrix: Air Prep Type: Total/NA Analysis Batch: 47260 1,1,1-Trichloroethane 136 116.7 ug/m3 86 50 -150 2 35 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec. Limits LimitRPD RPD 1,1,2,2-Tetrachloroethane 172 157.0 ug/m3 91 50 -150 1 35 1,1,2-Trichloro-1,2,2-trifluoroetha ne 192 188.0 ug/m3 98 50 -150 2 35 1,1,2-Trichloroethane 136 121.2 ug/m3 89 65 -149 0 37 1,1-Dichloroethane 101 98.59 ug/m3 97 50 -150 3 35 1,1-Dichloroethene 99.1 99.33 ug/m3 100 50 -150 8 35 1,1-Difluoroethane 67.5 49.76 ug/m3 74 60 -140 4 30 1,2,4-Trichlorobenzene 186 139.2 ug/m3 75 50 -150 6 35 1,2,4-Trimethylbenzene 123 109.0 ug/m3 89 50 -150 1 35 1,2-Dibromo-3-Chloropropane 242 196.5 ug/m3 81 60 -140 3 30 1,2-Dibromoethane 192 176.9 ug/m3 92 54 -144 1 36 1,2-Dichlorobenzene 150 128.7 ug/m3 86 34 -160 2 47 1,2-Dichloroethane 101 87.43 ug/m3 86 69 -153 3 35 1,2-Dichloropropane 116 107.6 ug/m3 93 67 -157 1 35 1,3,5-Trimethylbenzene 123 107.6 ug/m3 88 50 -150 2 35 1,3-Dichlorobenzene 150 134.1 ug/m3 89 50 -150 1 35 1,4-Dichlorobenzene 150 130.2 ug/m3 87 36 -156 1 47 2-Butanone 73.7 73.81 ug/m3 100 50 -150 8 35 2-Hexanone 102 93.17 ug/m3 91 50 -150 1 35 4-Ethyltoluene 123 108.7 ug/m3 88 50 -150 1 35 4-Methyl-2-pentanone 102 90.44 ug/m3 88 50 -150 1 35 Acetone 59.4 71.51 ug/m3 120 50 -150 9 35 Benzene 79.9 80.35 ug/m3 101 60 -156 1 40 Benzyl chloride 129 104.6 ug/m3 81 50 -150 3 35 Bromodichloromethane 168 143.3 ug/m3 86 50 -150 1 35 Bromoform 258 236.7 ug/m3 92 50 -150 1 38 Bromomethane 97.1 107.4 ug/m3 111 50 -150 6 35 cis-1,2-Dichloroethene 99.1 100.4 ug/m3 101 50 -150 4 35 Eurofins Calscience LLC Page 52 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Method: TO-15 - Volatile Organic Compounds in Ambient Air (Continued) Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 570-47260/4 Matrix: Air Prep Type: Total/NA Analysis Batch: 47260 cis-1,3-Dichloropropene 113 96.87 ug/m3 85 61 -157 0 35 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec. Limits LimitRPD RPD Carbon disulfide 77.9 92.99 ug/m3 119 50 -150 2 35 Carbon tetrachloride 157 123.2 ug/m3 78 64 -154 1 32 Chlorobenzene 115 103.3 ug/m3 90 50 -150 0 35 Chloroethane 66.0 75.15 ug/m3 114 50 -150 7 35 Chloroform 122 114.1 ug/m3 93 50 -150 3 35 Chloromethane 51.6 55.46 ug/m3 107 50 -150 4 35 Dibromochloromethane 213 188.6 ug/m3 89 50 -150 1 35 Dichlorodifluoromethane 124 109.5 ug/m3 89 50 -150 2 35 Dichlorotetrafluoroethane 175 182.1 ug/m3 104 50 -150 7 35 Ethylbenzene 109 102.9 ug/m3 95 52 -154 0 38 Hexachloro-1,3-butadiene 267 204.9 ug/m3 77 50 -150 6 35 Isopropanol 61.5 61.91 J ug/m3 101 50 -150 7 35 Methylene Chloride 86.8 89.98 ug/m3 104 50 -150 7 35 Methyl-t-Butyl Ether (MTBE)90.1 88.22 ug/m3 98 50 -150 3 35 n-Butylbenzene 137 111.6 ug/m3 81 50 -150 2 30 o-Xylene 109 99.23 ug/m3 91 52 -148 0 38 m,p-Xylene 217 206.7 ug/m3 95 42 -156 1 41 sec-Butylbenzene 137 112.8 ug/m3 82 50 -150 1 30 Styrene 106 96.92 ug/m3 91 50 -150 1 35 trans-1,2-Dichloroethene 99.1 105.6 ug/m3 107 50 -150 1 35 trans-1,3-Dichloropropene 113 97.11 ug/m3 86 50 -150 0 35 tert-Butylbenzene 137 120.5 ug/m3 88 50 -150 1 30 Tetrachloroethene 170 147.6 ug/m3 87 56 -152 1 40 Toluene 94.2 92.75 ug/m3 98 56 -146 0 43 Trichloroethene 134 119.0 ug/m3 89 63 -159 1 34 Trichlorofluoromethane 140 132.2 ug/m3 94 50 -150 7 35 Vinyl acetate 88.0 87.02 ug/m3 99 50 -150 5 35 Vinyl chloride 63.9 68.49 ug/m3 107 45 -177 5 36 1,2-Dichloroethane-d4 (Surr)47 -137 Surrogate 91 LCSD LCSD Qualifier Limits%Recovery 934-Bromofluorobenzene (Surr)57 -129 98Toluene-d8 (Surr)78 -156 Method: D1946 - Fixed Gases in Air (GC) Client Sample ID: Method BlankLab Sample ID: MB 570-47019/4 Matrix: Air Prep Type: Total/NA Analysis Batch: 47019 RL Carbon dioxide ND 0.50 % v/v 01/28/20 10:22 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 0.50 % v/v 01/28/20 10:22 1Carbon monoxide ND 0.50 % v/v 01/28/20 10:22 1Methane ND 0.50 % v/v 01/28/20 10:22 1Nitrogen ND 0.50 % v/v 01/28/20 10:22 1Oxygen + Argon Eurofins Calscience LLC Page 53 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Method: D1946 - Fixed Gases in Air (GC) (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 570-47019/2 Matrix: Air Prep Type: Total/NA Analysis Batch: 47019 Carbon dioxide 15.0 15.62 % v/v 104 80 -120 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec. Limits Carbon monoxide 7.02 6.973 % v/v 99 80 -120 Methane 4.53 4.542 % v/v 100 80 -120 Nitrogen 69.5 66.70 % v/v 96 80 -120 Oxygen + Argon 3.99 4.328 % v/v 108 80 -120 Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 570-47019/3 Matrix: Air Prep Type: Total/NA Analysis Batch: 47019 Carbon dioxide 15.0 15.41 % v/v 103 80 -120 1 20 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec. Limits LimitRPD RPD Carbon monoxide 7.02 6.769 % v/v 96 80 -120 3 20 Methane 4.53 4.411 % v/v 97 80 -120 3 20 Nitrogen 69.5 64.79 % v/v 93 80 -120 3 20 Oxygen + Argon 3.99 4.198 % v/v 105 80 -120 3 20 Eurofins Calscience LLC Page 54 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Association Summary Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Air - GC/MS VOA Analysis Batch: 46977 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air TO-15570-19024-13 SVP5-5 Total/NA Air TO-15570-19024-14 SVP5-10 Total/NA Air TO-15570-19024-15 SVP5-15 Total/NA Air TO-15MB 570-46977/5 Method Blank Total/NA Air TO-15LCS 570-46977/3 Lab Control Sample Total/NA Air TO-15LCSD 570-46977/4 Lab Control Sample Dup Total/NA Analysis Batch: 47027 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air TO-15570-19024-1 SVP1-5 Total/NA Air TO-15570-19024-2 SVP1-10 Total/NA Air TO-15570-19024-3 SVP1-19.5 Total/NA Air TO-15570-19024-4 SVP2-5 Total/NA Air TO-15570-19024-5 SVP2-10 Total/NA Air TO-15570-19024-6 SVP2-19.5 Total/NA Air TO-15570-19024-7 SVP3-5 Total/NA Air TO-15570-19024-8 SVP3-10 Total/NA Air TO-15570-19024-9 SVP3-19.5 Total/NA Air TO-15570-19024-10 SVP4-5 Total/NA Air TO-15MB 570-47027/6 Method Blank Total/NA Air TO-15LCS 570-47027/3 Lab Control Sample Total/NA Air TO-15LCSD 570-47027/4 Lab Control Sample Dup Total/NA Analysis Batch: 47256 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air TO-15570-19024-11 SVP4-10 Total/NA Air TO-15MB 570-47256/5 Method Blank Total/NA Air TO-15LCS 570-47256/3 Lab Control Sample Total/NA Air TO-15LCSD 570-47256/4 Lab Control Sample Dup Total/NA Analysis Batch: 47260 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air TO-15570-19024-12 SVP4-19.5 Total/NA Air TO-15MB 570-47260/6 Method Blank Total/NA Air TO-15LCS 570-47260/3 Lab Control Sample Total/NA Air TO-15LCSD 570-47260/4 Lab Control Sample Dup Total/NA Air - GC VOA Analysis Batch: 47019 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air D1946570-19024-1 SVP1-5 Total/NA Air D1946570-19024-2 SVP1-10 Total/NA Air D1946570-19024-3 SVP1-19.5 Total/NA Air D1946570-19024-4 SVP2-5 Total/NA Air D1946570-19024-5 SVP2-10 Total/NA Air D1946570-19024-6 SVP2-19.5 Total/NA Air D1946570-19024-7 SVP3-5 Total/NA Air D1946570-19024-8 SVP3-10 Total/NA Air D1946570-19024-9 SVP3-19.5 Total/NA Air D1946570-19024-10 SVP4-5 Total/NA Eurofins Calscience LLC Page 55 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Association Summary Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Air - GC VOA (Continued) Analysis Batch: 47019 (Continued) Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air D1946570-19024-11 SVP4-10 Total/NA Air D1946570-19024-12 SVP4-19.5 Total/NA Air D1946570-19024-13 SVP5-5 Total/NA Air D1946570-19024-14 SVP5-10 Total/NA Air D1946570-19024-15 SVP5-15 Total/NA Air D1946MB 570-47019/4 Method Blank Total/NA Air D1946LCS 570-47019/2 Lab Control Sample Total/NA Air D1946LCSD 570-47019/3 Lab Control Sample Dup Total/NA Analysis Batch: 47145 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air Fixed Gas Norm570-19024-1 SVP1-5 Total/NA Air Fixed Gas Norm570-19024-2 SVP1-10 Total/NA Air Fixed Gas Norm570-19024-3 SVP1-19.5 Total/NA Air Fixed Gas Norm570-19024-4 SVP2-5 Total/NA Air Fixed Gas Norm570-19024-5 SVP2-10 Total/NA Air Fixed Gas Norm570-19024-6 SVP2-19.5 Total/NA Air Fixed Gas Norm570-19024-7 SVP3-5 Total/NA Air Fixed Gas Norm570-19024-8 SVP3-10 Total/NA Air Fixed Gas Norm570-19024-9 SVP3-19.5 Total/NA Air Fixed Gas Norm570-19024-10 SVP4-5 Total/NA Air Fixed Gas Norm570-19024-11 SVP4-10 Total/NA Air Fixed Gas Norm570-19024-12 SVP4-19.5 Total/NA Air Fixed Gas Norm570-19024-13 SVP5-5 Total/NA Air Fixed Gas Norm570-19024-14 SVP5-10 Total/NA Air Fixed Gas Norm570-19024-15 SVP5-15 Total/NA Eurofins Calscience LLC Page 56 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Lab Chronicle Client: Geosyntec Consultants, Inc.Job ID: 570-19024-1 Project/Site: SC1029-02 Client Sample ID: SVP1-5 Lab Sample ID: 570-19024-1 Matrix: AirDate Collected: 01/27/20 14:05 Date Received: 01/27/20 19:10 Analysis TO-15 KA4W01/28/20 20:191 ECL 247027 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 400 mL 400 mL Instrument ID: GCMSK Analysis D1946 1 47019 01/28/20 10:58 XF3K ECL 2Total/NA 1 mL 1 mL GC65Instrument ID: Analysis Fixed Gas Norm 1 47145 01/28/20 10:58 XF3K ECL 2Total/NA GC65Instrument ID: Client Sample ID: SVP1-10 Lab Sample ID: 570-19024-2 Matrix: AirDate Collected: 01/27/20 14:25 Date Received: 01/27/20 19:10 Analysis TO-15 KA4W01/28/20 17:531 ECL 247027 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 400 mL 400 mL Instrument ID: GCMSK Analysis D1946 1 47019 01/28/20 11:36 XF3K ECL 2Total/NA 1 mL 1 mL GC65Instrument ID: Analysis Fixed Gas Norm 1 47145 01/28/20 11:36 XF3K ECL 2Total/NA GC65Instrument ID: Client Sample ID: SVP1-19.5 Lab Sample ID: 570-19024-3 Matrix: AirDate Collected: 01/27/20 14:41 Date Received: 01/27/20 19:10 Analysis TO-15 KA4W01/28/20 21:591 ECL 247027 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 400 mL 400 mL Instrument ID: GCMSK Analysis D1946 1 47019 01/28/20 11:54 XF3K ECL 2Total/NA 1 mL 1 mL GC65Instrument ID: Analysis Fixed Gas Norm 1 47145 01/28/20 11:54 XF3K ECL 2Total/NA GC65Instrument ID: Client Sample ID: SVP2-5 Lab Sample ID: 570-19024-4 Matrix: AirDate Collected: 01/27/20 12:22 Date Received: 01/27/20 19:10 Analysis TO-15 KA4W01/28/20 22:511 ECL 247027 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 400 mL 400 mL Instrument ID: GCMSK Analysis D1946 1 47019 01/28/20 12:13 XF3K ECL 2Total/NA 1 mL 1 mL GC65Instrument ID: Analysis Fixed Gas Norm 1 47145 01/28/20 12:13 XF3K ECL 2Total/NA GC65Instrument ID: Eurofins Calscience LLC Page 57 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Lab Chronicle Client: Geosyntec Consultants, Inc.Job ID: 570-19024-1 Project/Site: SC1029-02 Client Sample ID: SVP2-10 Lab Sample ID: 570-19024-5 Matrix: AirDate Collected: 01/27/20 13:14 Date Received: 01/27/20 19:10 Analysis TO-15 KA4W01/28/20 23:431 ECL 247027 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 400 mL 400 mL Instrument ID: GCMSK Analysis D1946 1 47019 01/28/20 12:31 XF3K ECL 2Total/NA 1 mL 1 mL GC65Instrument ID: Analysis Fixed Gas Norm 1 47145 01/28/20 12:31 XF3K ECL 2Total/NA GC65Instrument ID: Client Sample ID: SVP2-19.5 Lab Sample ID: 570-19024-6 Matrix: AirDate Collected: 01/27/20 13:39 Date Received: 01/27/20 19:10 Analysis TO-15 KA4W01/29/20 00:351 ECL 247027 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 400 mL 400 mL Instrument ID: GCMSK Analysis D1946 1 47019 01/28/20 12:49 XF3K ECL 2Total/NA 1 mL 1 mL GC65Instrument ID: Analysis Fixed Gas Norm 1 47145 01/28/20 12:49 XF3K ECL 2Total/NA GC65Instrument ID: Client Sample ID: SVP3-5 Lab Sample ID: 570-19024-7 Matrix: AirDate Collected: 01/27/20 10:57 Date Received: 01/27/20 19:10 Analysis TO-15 KA4W01/29/20 02:141 ECL 247027 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 400 mL 400 mL Instrument ID: GCMSK Analysis D1946 1 47019 01/28/20 13:07 XF3K ECL 2Total/NA 1 mL 1 mL GC65Instrument ID: Analysis Fixed Gas Norm 1 47145 01/28/20 13:07 XF3K ECL 2Total/NA GC65Instrument ID: Client Sample ID: SVP3-10 Lab Sample ID: 570-19024-8 Matrix: AirDate Collected: 01/27/20 11:20 Date Received: 01/27/20 19:10 Analysis TO-15 KA4W01/29/20 03:051 ECL 247027 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 400 mL 400 mL Instrument ID: GCMSK Analysis D1946 1 47019 01/28/20 13:26 XF3K ECL 2Total/NA 1 mL 1 mL GC65Instrument ID: Analysis Fixed Gas Norm 1 47145 01/28/20 13:26 XF3K ECL 2Total/NA GC65Instrument ID: Eurofins Calscience LLC Page 58 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Lab Chronicle Client: Geosyntec Consultants, Inc.Job ID: 570-19024-1 Project/Site: SC1029-02 Client Sample ID: SVP3-19.5 Lab Sample ID: 570-19024-9 Matrix: AirDate Collected: 01/27/20 11:49 Date Received: 01/27/20 19:10 Analysis TO-15 KA4W01/29/20 04:511 ECL 247027 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 400 mL 400 mL Instrument ID: GCMSK Analysis D1946 1 47019 01/28/20 13:43 XF3K ECL 2Total/NA 1 mL 1 mL GC65Instrument ID: Analysis Fixed Gas Norm 1 47145 01/28/20 13:43 XF3K ECL 2Total/NA GC65Instrument ID: Client Sample ID: SVP4-5 Lab Sample ID: 570-19024-10 Matrix: AirDate Collected: 01/27/20 14:59 Date Received: 01/27/20 19:10 Analysis TO-15 KA4W01/29/20 03:581 ECL 247027 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 400 mL 400 mL Instrument ID: GCMSK Analysis D1946 1 47019 01/28/20 14:01 XF3K ECL 2Total/NA 1 mL 1 mL GC65Instrument ID: Analysis Fixed Gas Norm 1 47145 01/28/20 14:01 XF3K ECL 2Total/NA GC65Instrument ID: Client Sample ID: SVP4-10 Lab Sample ID: 570-19024-11 Matrix: AirDate Collected: 01/27/20 15:12 Date Received: 01/27/20 19:10 Analysis TO-15 V2NZ01/29/20 17:131 ECL 247256 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 400 mL 400 mL Instrument ID: GCMSAA Analysis D1946 1 47019 01/28/20 14:19 XF3K ECL 2Total/NA 1 mL 1 mL GC65Instrument ID: Analysis Fixed Gas Norm 1 47145 01/28/20 14:19 XF3K ECL 2Total/NA GC65Instrument ID: Client Sample ID: SVP4-19.5 Lab Sample ID: 570-19024-12 Matrix: AirDate Collected: 01/27/20 15:27 Date Received: 01/27/20 19:10 Analysis TO-15 KA4W01/29/20 17:031 ECL 247260 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 400 mL 400 mL Instrument ID: GCMSII Analysis D1946 1 47019 01/28/20 14:37 XF3K ECL 2Total/NA 1 mL 1 mL GC65Instrument ID: Analysis Fixed Gas Norm 1 47145 01/28/20 14:37 XF3K ECL 2Total/NA GC65Instrument ID: Eurofins Calscience LLC Page 59 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Lab Chronicle Client: Geosyntec Consultants, Inc.Job ID: 570-19024-1 Project/Site: SC1029-02 Client Sample ID: SVP5-5 Lab Sample ID: 570-19024-13 Matrix: AirDate Collected: 01/27/20 15:48 Date Received: 01/27/20 19:10 Analysis TO-15 USQD01/28/20 19:221 ECL 246977 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 400 mL 400 mL Instrument ID: GCMSAA Analysis D1946 1 47019 01/28/20 14:54 XF3K ECL 2Total/NA 1 mL 1 mL GC65Instrument ID: Analysis Fixed Gas Norm 1 47145 01/28/20 14:54 XF3K ECL 2Total/NA GC65Instrument ID: Client Sample ID: SVP5-10 Lab Sample ID: 570-19024-14 Matrix: AirDate Collected: 01/27/20 16:08 Date Received: 01/27/20 19:10 Analysis TO-15 USQD01/28/20 20:121 ECL 246977 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 400 mL 400 mL Instrument ID: GCMSAA Analysis D1946 1 47019 01/28/20 15:12 XF3K ECL 2Total/NA 1 mL 1 mL GC65Instrument ID: Analysis Fixed Gas Norm 1 47145 01/28/20 15:12 XF3K ECL 2Total/NA GC65Instrument ID: Client Sample ID: SVP5-15 Lab Sample ID: 570-19024-15 Matrix: AirDate Collected: 01/27/20 16:24 Date Received: 01/27/20 19:10 Analysis TO-15 USQD01/28/20 21:021 ECL 246977 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 400 mL 400 mL Instrument ID: GCMSAA Analysis D1946 1 47019 01/28/20 15:30 XF3K ECL 2Total/NA 1 mL 1 mL GC65Instrument ID: Analysis Fixed Gas Norm 1 47145 01/28/20 15:30 XF3K ECL 2Total/NA GC65Instrument ID: Laboratory References: ECL 2 = Eurofins Calscience LLC Lampson, 7445 Lampson Ave, Garden Grove, CA 92841, TEL (714)895-5494 Eurofins Calscience LLC Page 60 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Accreditation/Certification Summary Client: Geosyntec Consultants, Inc.Job ID: 570-19024-1 Project/Site: SC1029-02 Laboratory: Eurofins Calscience LLC All accreditations/certifications held by this laboratory are listed. Not all accreditations/certifications are applicable to this report. Authority Program Identification Number Expiration Date Arizona AZ0781State 03-13-20 California Los Angeles County Sanitation Districts 10109 09-29-20 California SCAQMD LAP 17LA0919 11-30-20 California State 2944 09-29-20 Guam State 20-003R 10-31-20 Hawaii State <cert No.>07-02-20 Nevada State CA00111 07-31-20 Oregon NELAP CA300001 01-29-20 Eurofins Calscience LLC Page 61 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Method Summary Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Method Method Description LaboratoryProtocol EPATO-15 Volatile Organic Compounds in Ambient Air ECL 2 ASTMD1946Fixed Gases in Air (GC)ECL 2 EPAFixed Gas Norm Fixed Gases from Stationary Sources ECL 2 Protocol References: ASTM = ASTM International EPA = US Environmental Protection Agency Laboratory References: ECL 2 = Eurofins Calscience LLC Lampson, 7445 Lampson Ave, Garden Grove, CA 92841, TEL (714)895-5494 Eurofins Calscience LLC Page 62 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Sample Summary Job ID: 570-19024-1Client: Geosyntec Consultants, Inc. Project/Site: SC1029-02 Lab Sample ID Client Sample ID ReceivedCollectedMatrix Asset ID 570-19024-1 SVP1-5 Air 01/27/20 14:05 01/27/20 19:10 570-19024-2 SVP1-10 Air 01/27/20 14:25 01/27/20 19:10 570-19024-3 SVP1-19.5 Air 01/27/20 14:41 01/27/20 19:10 570-19024-4 SVP2-5 Air 01/27/20 12:22 01/27/20 19:10 570-19024-5 SVP2-10 Air 01/27/20 13:14 01/27/20 19:10 570-19024-6 SVP2-19.5 Air 01/27/20 13:39 01/27/20 19:10 570-19024-7 SVP3-5 Air 01/27/20 10:57 01/27/20 19:10 570-19024-8 SVP3-10 Air 01/27/20 11:20 01/27/20 19:10 570-19024-9 SVP3-19.5 Air 01/27/20 11:49 01/27/20 19:10 570-19024-10 SVP4-5 Air 01/27/20 14:59 01/27/20 19:10 570-19024-11 SVP4-10 Air 01/27/20 15:12 01/27/20 19:10 570-19024-12 SVP4-19.5 Air 01/27/20 15:27 01/27/20 19:10 570-19024-13 SVP5-5 Air 01/27/20 15:48 01/27/20 19:10 570-19024-14 SVP5-10 Air 01/27/20 16:08 01/27/20 19:10 570-19024-15 SVP5-15 Air 01/27/20 16:24 01/27/20 19:10 Eurofins Calscience LLC Page 63 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Page 64 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Page 65 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Page 66 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Login Sample Receipt Checklist Client: Geosyntec Consultants, Inc.Job Number: 570-19024-1 Login Number: 19024 Question Answer Comment Creator: Andujo, Italy List Source: Eurofins Calscience List Number: 1 N/ARadioactivity wasn't checked or is </= background as measured by a survey meter. TrueThe cooler's custody seal, if present, is intact. TrueSample custody seals, if present, are intact. TrueThe cooler or samples do not appear to have been compromised or tampered with. FalseSamples were received on ice.Thermal preservation not required. TrueCooler Temperature is acceptable. TrueCooler Temperature is recorded. TrueCOC is present. TrueCOC is filled out in ink and legible. TrueCOC is filled out with all pertinent information. TrueIs the Field Sampler's name present on COC? TrueThere are no discrepancies between the containers received and the COC. TrueSamples are received within Holding Time (excluding tests with immediate HTs) TrueSample containers have legible labels. TrueContainers are not broken or leaking. TrueSample collection date/times are provided. TrueAppropriate sample containers are used. TrueSample bottles are completely filled. TrueSample Preservation Verified. TrueThere is sufficient vol. for all requested analyses, incl. any requested MS/MSDs N/AContainers requiring zero headspace have no headspace or bubble is <6mm (1/4"). TrueMultiphasic samples are not present. TrueSamples do not require splitting or compositing. N/AResidual Chlorine Checked. Eurofins Calscience LLC Page 67 of 67 1/30/2020 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15