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HomeMy WebLinkAbout20089_Hendrick_Auto_Soil-Gas_Rpt_20150622 June 22, 2015 Mr. Eric Applefield Durham Partnership, LLC 1435 West Moorehead Street, Suite 130 Charlotte, North Carolina 28208 Reference: Report of Soil-Gas Assessment Hendrick Durham Auto Mall 409 South Roxboro Street and 464 East Pettigrew Street Durham, Durham County, North Carolina ECS Project 06:22255-B_Rev-3 Dear Mr. Applefield: ECS Carolinas, LLP (ECS) is pleased to provide Durham Partnership, LLC with the results of our soil-gas assessment for the above-referenced property. ECS’ services were conducted in accordance with the services outlined in ECS Proposal 06-18626 dated April 17, 2015. ECS appreciates the opportunity to provide our services to you. If there are questions regarding this report, or a need for further information, please contact us at (919) 861-9910. Respectfully submitted, ECS CAROLINAS, LLP Matthew Gillis Environmental Project Manager C. Brian Smith, PG Principal Geologist Hendrick Durham Auto Mall Durham, Durham County, North Carolina ECS Project 06:22255-B_Rev-3 June 22, 2015 2 TABLE OF CONTENTS SITE INFORMATION ................................................................................................................. 1 FIELD ACTIVITIES and LABORATORY ANALYSIS RESULTS ................................................. 2 CONCLUSIONS ......................................................................................................................... 3 RECOMMENDATIONS .............................................................................................................. 4 QUALIFICATIONS OF REPORT ............................................................................................... 4 FIGURES 1. Site Location Map 2. Sample Location Map 3. Soil-Gas Concentration Map TABLE Laboratory Test Results – Soil-Gas Samples APPENDIX Laboratory Analytical Results and COCs Pace’s Data Review Statement Hendrick Durham Auto Mall Durham, Durham County, North Carolina ECS Project 06:22255-B_Rev-3 June 22, 2015 1 SITE INFORMATION The subject site is known as the Hendrick Durham Auto Mall site and is located at 409 South Roxboro Street and 464 East Pettigrew Street in Durham, Durham County, North Carolina (Figure 1). The site consists of 12.076-acres of land and is currently developed with the Hendrick Durham Auto Mall and associated parking lots. ECS previously conducted a Phase I Environmental Site Assessment (ESA) for the site (ECS Project No. 06:21380). ECS identified the following RECs with respect to the subject site: • The documented releases associated with the former use of the site as a hosiery mill and a printing facility; • The current use of the site as an automotive dealership and maintenance facility; and • The historical use of surrounding properties as auto repair facilities, dry cleaning facilities, and industrial uses. The Phase I ESA also identified the following Controlled Recognized Environmental Conditions (CRECs): • The documented releases associated with the subject site. Based on the results of the Phase I ESA, ECS conducted a Phase II ESA dated February 28, 2014 (ECS Project No. 06:21308-B). Based on the field observation and laboratory analytical results of the soil and groundwater samples collected during the Phase II ESA, a summary of ECS’ conclusions are as follows: • Laboratory analysis did not report volatile organic compounds (VOCs) at concentrations above the Inactive Hazardous Sites Branch (IHSB) Residential Preliminary Soil Remediation Goals (PSRGs) in the soil samples collected from SB-1 through SB-6; • Laboratory analysis of soil sample SB-6 located in the eastern portion of the parking lot, north of the dealership building reported benzo(a)anthracene, benzo(a)pyrene, benzo(b)floranthene, dibenzo(a,h)anthracene, and indeno(1,2,3-cd)pyrene at concentrations above their respective IHSB Residential and Industrial PSRGs; • Laboratory analysis of soil sample SB-6 located in the eastern portion of the parking lot north of the dealership building reported benzo(k)fluranthene and chrysene at concentrations above their respective IHSB Residential PSRGs but below their respective IHSB Industrial PSRGs; • Laboratory analysis of a groundwater sample located in the southwestern portion of the parking lot north of the dealership building did not detect target volatile organic compounds (VOCs) or semi-volatile organic compounds (SVOCs) above laboratory reporting limits. Based on the results of the Phase II ESA, ECS conducted a Report of Additional Soil and Groundwater Assessment dated March 23, 2015 (ECS Project No. 06:22255-A_Rev-1). Based on the field observation and laboratory analytical results of the soil and groundwater samples collected during the Additional Soil and Groundwater Assessment, a summary of ECS’ conclusions are as follows: Hendrick Durham Auto Mall Durham, Durham County, North Carolina ECS Project 06:22255-B_Rev-3 June 22, 2015 2 • ECS recommended in this report that if future grading or excavation activities are planned at the site, the soils at the following locations should be monitored for possible petroleum impacts; the soil sample located near floor drain inside the oil change building (SS-1), the soil samples located near the underground storage tank (UST) anomaly (SS-8 and SS-10), the soil samples located near the aboveground storage tank (AST) (SS-11 and SS-12), and the soil sample located near the oil/water separator (OWS) (SS-13); • Chromium and lead were also reported at concentrations above their respective IHSB Residential and Industrial PSRGs. However, the detections are consistent with naturally occurring metals in soils in this general area. • ECS concluded additional groundwater assessment did not appear necessary at the site and was not recommended at that time; and • ECS also recommended that updating the Environmental Management Plan (EMP) to include the information from this report. In an effort to determine if other areas of the subject site had been adversely impacted by routine operations at the Hendrick Durham Auto Mall, ECS was contracted to conduct a soil-gas assessment at the site. Project information is based on correspondence between Mr. Eric Applefield of Durham Partnership, LLC., Mr. Tony Duque of NCDENR’s Brownfields Program, Mr. Brian Smith with ECS, and the previously cited environmental assessments. FIELD ACTIVITIES and LABORATORY ANALYSIS RESULTS The soil-gas assessment consisted of collecting three soil-gas samples at the subject site. Soil- gas sample SG-1 was collected in the future building footprint on Parcel 3 and soil-gas samples SG-2 and SG-3 were collected in the future building footprints on Parcel 1. The locations of the soil-gas samples, previous soil samples, and previous groundwater samples are shown on Figure 2. On April 27, 2015, ECS collected soil-gas samples SG-1, SG-2, and SG-3 at the subject site. The soil-gas sample containers were labeled with ECS project number, sample identification, sample date and time, and requested analytical test. The samples were submitted to Pace Analytical Services (Pace) in Minneapolis, Minnesota to be analyzed for VOCs using EPA Method TO-15. ECS maintained proper chain-of-custody (COC) procedures throughout the sample collection and transportation process. Copies of the COCs are included in the Appendices. The soil-gas samples were collected by advancing a hammer drill to an approximate depth of six to eight inches below the asphalt slab surface. ECS field personnel then placed an AMS probe tip connected to teflon tubing into the hole. The annular space around the AMS probe tip was filled with sand to beneath the slab and then sealed with a bentonite slurry. Prior to collecting the soil-gas samples, helium gas was used as a quality assurance/control measure to confirm the integrity of the bentonite seal. A stainless-steel shroud was placed and sealed over the sampling point and purged with helium. The probe-point tubing and tracer-gas tubing were placed through the shroud wall. As the shroud was flooded with helium via the Hendrick Durham Auto Mall Durham, Durham County, North Carolina ECS Project 06:22255-B_Rev-3 June 22, 2015 3 tracer-gas tubing placed through the cylinder wall, the probe-point tubing was connected to a peristaltic pump and tedlar bag. An approximate total of three volumes of air were pumped from the probe-point tubing into the tedlar bag. ECS screened the purged air from the tedlar bag with a Model MGD-2002 Multi-Gas Leak detector. A helium concentration of less than five percent helium was considered acceptable. ECS did not record helium concentrations during the sampling activities. After the leak test was complete, the probe tubing was then connected to a six-liter Summa canister with a regulator set to collect the sample over a one-half hour period (0.2 L/min) for the soil-gas samples. The vacuum in the canister was measured and recorded at the beginning and the end of the sampling cycle. Following sample collection, the probes were removed and the borings filled with bentonite. The samples were submitted to Pace to be analyzed for VOCs using EPA Method TO-15. Laboratory analysis detected 1,4-dichlorobenzene at a concentration above its Residential Vapor Intrusion Screening Level (VISL) but below its Commercial VISL in the soil-gas samples collected from SG-1, SG-2, and SG-3. Laboratory analysis detected several additional analytes at concentrations above their respective laboratory reporting limits but below their respective Residential VISLs in the soil-gas samples collected from SG-1, SG-2, and SG-3. A summary of the laboratory analytical results is included in Table 1 and shown on Figure 3. The laboratory data sheets and COCs are included in the Appendix. A data review was requested for Pace to confirm detections of 1,4-dichlorobenzene in all samples for the project, as well as, the detection of 1,3-dichlorobenzene in Pace sample 92247269001. Based on Pace’s review, they concluded that there are no discrepancies to report and that all assessments performed by Pace did not indicate carryover or contamination from the lab into the samples that were collected by ECS. Pace’s Data Review Statement is included in the Appendix. CONCLUSIONS Based on the results of the soil-gas assessment, ECS concludes the following: • ECS collected two soil-gas samples from Parcel 1 and one soil-gas sample from Parcel 3 at the subject site; • The soil-gas samples were submitted to a certified laboratory for chemical analysis for VOCs using EPA Method TO-15; Hendrick Durham Auto Mall Durham, Durham County, North Carolina ECS Project 06:22255-B_Rev-3 June 22, 2015 4 • Laboratory analysis detected 1,4-dichlorobenzene at a concentration above its Residential VISL but below its Commercial VISL in the soil-gas samples collected from SG-1, SG-2, and SG-3. According to the United States Environmental Protection Agency (EPA) website, 1,4-dichlorobenzene is used as a fumigant for the control of moths (mothballs), molds, and mildews and as a space deodorant for toilets and refuse containers. Additionally, a material safety data sheet (MSDS) for an Asphalt and Tar Remover was reviewed. In the MSDS 1,4-dichlorobenzene is listed as an ingredient. ECS cannot confirm the origin of 1,4- dichlorobenzene in site soils; however, it is possible that 1,4-dichlorobenzene is related to the asphalt parking lot on site. ECS does not consider 1,4-dichlorobenzene to be a contaminant of concern for the site; and • Laboratory analysis detected several additional analytes at concentrations above their respective laboratory reporting limits but below their respective Residential VISLs in the soil- gas samples collected from SG-1, SG-2, and SG-3. RECOMMENDATIONS Based on the results of the soil-gas assessment, ECS recommends the following: • ECS does not recommend additional assessment at this time; however, during future grading activities at the site additional soil-gas samples should be collected near the locations of soil-gas samples SG-1, SG-2, and SG-3 to verify the presence of 1,4- dichlorobenzene in site soils; and • ECS recommends that a copy of this report be retained by the property owner to document assessment activities. QUALIFICATIONS OF REPORT The activities and evaluative approaches used in this assessment are consistent with those normally employed in soil-gas assessment projects of this type. Our evaluation of site conditions has been based on our understanding of the site project information and the data obtained during our field activities. This report was prepared for the express use of Durham Partnership, LLC. Use of this report by other individuals or companies implies their acceptance of the General Conditions of Service of the original contract. SOURCE: USGS TOPOGRAPHIC MAP SOUTHWEST DURHAM, 1998 1 : 24,000 FIGURE 1 SITE LOCATION MAP HENDRICK DURHAM AUTO MALL 409 SOUTH ROXBORO STREET and 464 EAST PETTIGREW STREET DURHAM, DURHAM COUNTY, NORTH CAROLINA ECS PROJECT NO: 06:22255-B_Rev-3 Site SCALE NOT SHOWN FIGURE 2 SAMPLE LOCATION MAP HENDRICK DURHAM AUTO MALL 409 SOUTH ROXBORO STREET and 464 EAST PETTIGREW STREET DURHAM, DURHAM COUNTY, NORTH CAROLINA ECS PROJECT NO: 06:22255-B_Rev-3 LEGEND Approximate Location of Soil-Gas Sample Approximate Location of Previous Groundwater Sample Location Approximate Location of Previous Soil Sample Location Approximate Soil-Gas Sample Location SG-1 SG-2 SG-3 Approximate Soil Sample Location Approximate Groundwater Sample Location FIGURE 3 SOIL-GAS CONCENTRATION MAP HENDRICK DURHAM AUTO MALL 409 SOUTH ROXBORO STREET and 464 EAST PETTIGREW STREET DURHAM, DURHAM COUNTY, NORTH CAROLINA ECS PROJECT NO: 06:22255-B_Rev-3 LEGEND Approximate Location of Soil-Gas Sample Approximate Location of Previous Groundwater Sample Location Approximate Location of Previous Soil Sample Location 279 Bold Concentration above the Residential VISL (ug/m3) SG-1 SG-2 SG-3 1,4-dichlorobenzene 243 1,4-dichlorobenzene 1401,4-dichlorobenzene 279 SOURCE: DURHAM GIS DATED 2013 SCALE: AS SHOWN 1 inch = 150 feet Sample ID SG-1 SG-2 SG-3 Sample Date 4/27/2015 4/27/2015 4/27/2015 Acetone 330 438 394 216,000 2,720,000 Benzene 11.3 10.8 12.2 120 1,570 2-Butanone (MEK) 75.5 103 138 34,800 438,000 Carbon Disulfide 12.3 30.8 23.0 4,870 61,300 Chloroethane BRL 0.96 1.6 NE NE Chloroform BRL 2.2 BRL 40.7 533 Chloromethane 1.8 2.6 1.4 626 7,880 Cyclohexane 29.4 129 115 41,700 52,600 1,3-Dichlorobenzene 5.9 BRL BRL NE NE 1,4-Dichlorobenzene 140 279 243 85.1 1,110 Dichlorodifluoromethane 3.2 3.5 3.0 695 8,760 cis-1,2-Dichloroethene BRL 1.7 BRL NE NE Ethyl acetate 17.1 6.4 4.8 487 6,130 Ethylbenzene 4.4 5.1 5.2 374 4,910 n-Heptane 9.6 10.4 11.5 NE NE n-Hexane 24.9 41.4 32.2 4,870 61,300 2-Hexanone 3.5 11.0 9.4 209 2,630 4-Methyl-2-pentanone 5.9 10.1 8.2 20,900 263,000 Naphthalene 8.2 7.1 5.3 20.9 263 Propylene 277 268 132 20,900 263,000 Styrene BRL 3.8 BRL 6,950 87,600 Tetrachloroethene BRL 1.8 BRL 278 3,500 Tetrahydrofuran 11.4 14.7 13.5 13,900 175,000 Total Hydrocarbons as Gas 5,540 5,580 3,280 NE NE Toluene 33.0 30.9 33.8 34,800 438,000 1,2,4-Trimethylbenzene 6.0 5.5 5.7 48.7 613 Vinyl acetate 9.4 21.2 17.1 1,390 17,500 Total Xylenes 19.0 22.4 22.1 695 8,760 Division of Waste Management Vapor Intrusion Screening Level Residential and Non-Residential, June2014 VISL = Vapor Intrusion Screening Levels BRL = Test result below laboratory reporting limit NE = Not Established Bold = Detected above the Residential VISLs Underline = Detected above the Residential VISLs and Commercial VISLs EPA TO-15 (ug/m3)Method (Parameter) Residential VISLs (ug/m3) Non-Residential VISLs (ug/m3) Table 1 Laboratory Test Results - Soil-Gas Samples Hendrick Durham Auto Mall 409 South Roxboro Street and 464 East Pettigrew Street Durham, Durham County, North Carolina ECS Project 06:22255-B_Rev-3 APPENDIX A #=CL# June 04, 2015 LIMS USE: FR - MATTHEW GILLIS LIMS OBJECT ID: 92247269 92247269 Project: Pace Project No.: RE: Matthew Gillis ECS 9001 Glenwood Avenue Raleigh, NC 27617 Hendrick Auto Mall Dear Matthew Gillis: Enclosed are the analytical results for sample(s) received by the laboratory on April 27, 2015. The results relate only to the samples included in this report. Results reported herein conform to the most current TNI standards and the laboratory's Quality Assurance Manual, where applicable, unless otherwise noted in the body of the report. Analyses were performed at the Pace Analytical Services location indicated on the sample analyte page for analysis unless otherwise footnoted. Report Revision: This report was revised to remove THC as Gas from the compound list. Sample duplicate 10304522001 is not reflective of any samples provided by ECS Carolinas, LLP for this project. If you have any questions concerning this report, please feel free to contact me. Sincerely, Angela Baioni angela.baioni@pacelabs.com Project Manager REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, Inc.. Pace Analytical Services, Inc. 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 1 of 21 #=CL# June 04, 2015 Page 2 LIMS USE: FR - MATTHEW GILLIS LIMS OBJECT ID: 92247269 Enclosures cc:Matthew Gillis, ECS Brian Smith, ECS Carolinas LLP REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, Inc.. Pace Analytical Services, Inc. 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 2 of 21 #=CP# CERTIFICATIONS Pace Project No.: Project: 92247269 Hendrick Auto Mall Minnesota Certification IDs 1700 Elm Street SE Suite 200, Minneapolis, MN 55414A2LA Certification #: 2926.01 Alaska Certification #: UST-078Alaska Certification #MN00064Alabama Certification #40770 Arizona Certification #: AZ-0014Arkansas Certification #: 88-0680 California Certification #: 01155CAColorado Certification #PaceConnecticut Certification #: PH-0256 EPA Region 8 Certification #: 8TMS-LFlorida/NELAP Certification #: E87605 Guam Certification #:14-008rGeorgia Certification #: 959Georgia EPD #: Pace Idaho Certification #: MN00064Hawaii Certification #MN00064 Illinois Certification #: 200011Indiana Certification#C-MN-01Iowa Certification #: 368 Kansas Certification #: E-10167Kentucky Dept of Envi. Protection - DW #90062 Kentucky Dept of Envi. Protection - WW #:90062Louisiana DEQ Certification #: 3086Louisiana DHH #: LA140001 Maine Certification #: 2013011Maryland Certification #: 322 Michigan DEPH Certification #: 9909 Minnesota Certification #: 027-053-137Mississippi Certification #: Pace Montana Certification #: MT0092Nevada Certification #: MN_00064Nebraska Certification #: Pace New Jersey Certification #: MN-002New York Certification #: 11647 North Carolina Certification #: 530North Carolina State Public Health #: 27700North Dakota Certification #: R-036 Ohio EPA #: 4150Ohio VAP Certification #: CL101 Oklahoma Certification #: 9507Oregon Certification #: MN200001Oregon Certification #: MN300001 Pennsylvania Certification #: 68-00563Puerto Rico Certification Saipan (CNMI) #:MP0003South Carolina #:74003001Texas Certification #: T104704192 Tennessee Certification #: 02818Utah Certification #: MN000642013-4 Virginia DGS Certification #: 251Virginia/VELAP Certification #: PaceWashington Certification #: C486 West Virginia Certification #: 382West Virginia DHHR #:9952C Wisconsin Certification #: 999407970 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, Inc.. Pace Analytical Services, Inc. 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 3 of 21 #=SA# SAMPLE ANALYTE COUNT Pace Project No.: Project: 92247269 Hendrick Auto Mall Lab ID Sample ID Method Analytes Reported LaboratoryAnalysts 92247269001 SG-1 TO-15 58 PASI-MMJL 92247269002 SG-2 TO-15 58 PASI-MMJL 92247269003 SG-3 TO-15 58 PASI-MMJL REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, Inc.. Pace Analytical Services, Inc. 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 4 of 21 #=HO# SUMMARY OF DETECTION Pace Project No.: Project: 92247269 Hendrick Auto Mall Parameters AnalyzedResult Lab Sample ID Report Limit QualifiersUnitsMethod Client Sample ID 92247269001 SG-1 Acetone 330 ug/m3 05/03/15 00:58 E4.3TO-15 Benzene 11.3 ug/m3 05/03/15 00:580.58TO-15 2-Butanone (MEK)75.5 ug/m3 05/03/15 00:581.1TO-15 Carbon disulfide 12.3 ug/m3 05/03/15 00:581.1TO-15 Chloromethane 1.8 ug/m3 05/03/15 00:580.76TO-15 Cyclohexane 29.4 ug/m3 05/03/15 00:581.3TO-15 1,3-Dichlorobenzene 5.9 ug/m3 05/03/15 00:585.5TO-15 1,4-Dichlorobenzene 140 ug/m3 05/03/15 00:585.5TO-15 Dichlorodifluoromethane 3.2 ug/m3 05/03/15 00:581.8TO-15 Ethyl acetate 17.1 ug/m3 05/03/15 00:581.3TO-15 Ethylbenzene 4.4 ug/m3 05/03/15 00:581.6TO-15 n-Heptane 9.6 ug/m3 05/03/15 00:581.5TO-15 n-Hexane 24.9 ug/m3 05/03/15 00:581.3TO-15 2-Hexanone 3.5 ug/m3 05/03/15 00:581.5TO-15 4-Methyl-2-pentanone (MIBK)5.9 ug/m3 05/03/15 00:581.5TO-15 Naphthalene 8.2 ug/m3 05/03/15 00:584.8TO-15 Propylene 277 ug/m3 05/03/15 00:58 E0.63TO-15 Tetrahydrofuran 11.4 ug/m3 05/03/15 00:581.1TO-15 Toluene 33.0 ug/m3 05/03/15 00:581.4TO-15 1,2,4-Trimethylbenzene 6.0 ug/m3 05/03/15 00:584.5TO-15 Vinyl acetate 9.4 ug/m3 05/03/15 00:581.3TO-15 m&p-Xylene 13.5 ug/m3 05/03/15 00:583.2TO-15 o-Xylene 5.5 ug/m3 05/03/15 00:581.6TO-15 92247269002 SG-2 Acetone 438 ug/m3 05/05/15 00:46 E12.8TO-15 Benzene 10.8 ug/m3 05/03/15 02:000.57TO-15 2-Butanone (MEK)103 ug/m3 05/05/15 00:463.2TO-15 Carbon disulfide 30.8 ug/m3 05/03/15 02:001.1TO-15 Chloroethane 0.96 ug/m3 05/03/15 02:000.94TO-15 Chloroform 2.2 ug/m3 05/03/15 02:000.86TO-15 Chloromethane 2.6 ug/m3 05/03/15 02:000.73TO-15 Cyclohexane 129 ug/m3 05/03/15 02:001.2TO-15 1,4-Dichlorobenzene 279 ug/m3 05/03/15 02:005.3TO-15 Dichlorodifluoromethane 3.5 ug/m3 05/03/15 02:001.8TO-15 cis-1,2-Dichloroethene 1.7 ug/m3 05/03/15 02:001.4TO-15 Ethyl acetate 6.4 ug/m3 05/03/15 02:001.3TO-15 Ethylbenzene 5.1 ug/m3 05/03/15 02:001.5TO-15 n-Heptane 10.4 ug/m3 05/03/15 02:001.4TO-15 n-Hexane 41.4 ug/m3 05/03/15 02:001.3TO-15 2-Hexanone 11.0 ug/m3 05/03/15 02:001.4TO-15 4-Methyl-2-pentanone (MIBK)10.1 ug/m3 05/03/15 02:001.4TO-15 Naphthalene 7.1 ug/m3 05/03/15 02:004.6TO-15 Propylene 268 ug/m3 05/05/15 00:461.9TO-15 Styrene 3.8 ug/m3 05/03/15 02:003.8TO-15 Tetrachloroethene 1.8 ug/m3 05/03/15 02:001.2TO-15 Tetrahydrofuran 14.7 ug/m3 05/03/15 02:001.0TO-15 Toluene 30.9 ug/m3 05/03/15 02:001.3TO-15 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, Inc.. Pace Analytical Services, Inc. 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 5 of 21 #=HO# SUMMARY OF DETECTION Pace Project No.: Project: 92247269 Hendrick Auto Mall Parameters AnalyzedResult Lab Sample ID Report Limit QualifiersUnitsMethod Client Sample ID 92247269002 SG-2 1,2,4-Trimethylbenzene 5.5 ug/m3 05/03/15 02:004.3TO-15 Vinyl acetate 21.2 ug/m3 05/03/15 02:001.2TO-15 m&p-Xylene 16.2 ug/m3 05/03/15 02:003.1TO-15 o-Xylene 6.2 ug/m3 05/03/15 02:001.5TO-15 92247269003 SG-3 Acetone 394 ug/m3 05/03/15 01:29 E4.5TO-15 Benzene 12.2 ug/m3 05/03/15 01:290.61TO-15 2-Butanone (MEK)138 ug/m3 05/03/15 01:291.1TO-15 Carbon disulfide 23.0 ug/m3 05/03/15 01:291.2TO-15 Chloroethane 1.6 ug/m3 05/03/15 01:291.0TO-15 Chloromethane 1.4 ug/m3 05/03/15 01:290.79TO-15 Cyclohexane 115 ug/m3 05/03/15 01:291.3TO-15 1,4-Dichlorobenzene 243 ug/m3 05/03/15 01:295.7TO-15 Dichlorodifluoromethane 3.0 ug/m3 05/03/15 01:291.9TO-15 Ethyl acetate 4.8 ug/m3 05/03/15 01:291.4TO-15 Ethylbenzene 5.2 ug/m3 05/03/15 01:291.6TO-15 n-Heptane 11.5 ug/m3 05/03/15 01:291.6TO-15 n-Hexane 32.2 ug/m3 05/03/15 01:291.3TO-15 2-Hexanone 9.4 ug/m3 05/03/15 01:291.6TO-15 4-Methyl-2-pentanone (MIBK)8.2 ug/m3 05/03/15 01:291.6TO-15 Naphthalene 5.3 ug/m3 05/03/15 01:295.0TO-15 Propylene 132 ug/m3 05/03/15 01:29 E0.65TO-15 Tetrahydrofuran 13.5 ug/m3 05/03/15 01:291.1TO-15 Toluene 33.8 ug/m3 05/03/15 01:291.4TO-15 1,2,4-Trimethylbenzene 5.7 ug/m3 05/03/15 01:294.7TO-15 Vinyl acetate 17.1 ug/m3 05/03/15 01:291.3TO-15 m&p-Xylene 16.0 ug/m3 05/03/15 01:293.3TO-15 o-Xylene 6.1 ug/m3 05/03/15 01:291.6TO-15 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, Inc.. Pace Analytical Services, Inc. 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 6 of 21 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92247269 Hendrick Auto Mall Sample:SG-1 Lab ID:92247269001 Collected:04/27/15 11:33 Received:04/27/15 16:50 Matrix:Air Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit Analytical Method: TO-15TO15 MSV AIR Acetone 330 ug/m3 05/03/15 00:58 67-64-1 E4.3 1.8 Benzene 11.3 ug/m3 05/03/15 00:58 71-43-20.58 1.8 Bromodichloromethane ND ug/m3 05/03/15 00:58 75-27-42.4 1.8 Bromoform ND ug/m3 05/03/15 00:58 75-25-23.8 1.8 Bromomethane ND ug/m3 05/03/15 00:58 74-83-91.4 1.8 1,3-Butadiene ND ug/m3 05/03/15 00:58 106-99-00.81 1.8 2-Butanone (MEK)75.5 ug/m3 05/03/15 00:58 78-93-31.1 1.8 Carbon disulfide 12.3 ug/m3 05/03/15 00:58 75-15-01.1 1.8 Carbon tetrachloride ND ug/m3 05/03/15 00:58 56-23-51.2 1.8 Chlorobenzene ND ug/m3 05/03/15 00:58 108-90-71.7 1.8 Chloroethane ND ug/m3 05/03/15 00:58 75-00-30.97 1.8 Chloroform ND ug/m3 05/03/15 00:58 67-66-30.89 1.8 Chloromethane 1.8 ug/m3 05/03/15 00:58 74-87-30.76 1.8 Cyclohexane 29.4 ug/m3 05/03/15 00:58 110-82-71.3 1.8 Dibromochloromethane ND ug/m3 05/03/15 00:58 124-48-13.1 1.8 1,2-Dibromoethane (EDB)ND ug/m3 05/03/15 00:58 106-93-42.8 1.8 1,2-Dichlorobenzene ND ug/m3 05/03/15 00:58 95-50-12.2 1.8 1,3-Dichlorobenzene 5.9 ug/m3 05/03/15 00:58 541-73-15.5 1.8 1,4-Dichlorobenzene 140 ug/m3 05/03/15 00:58 106-46-75.5 1.8 Dichlorodifluoromethane 3.2 ug/m3 05/03/15 00:58 75-71-81.8 1.8 1,1-Dichloroethane ND ug/m3 05/03/15 00:58 75-34-31.5 1.8 1,2-Dichloroethane ND ug/m3 05/03/15 00:58 107-06-20.74 1.8 1,1-Dichloroethene ND ug/m3 05/03/15 00:58 75-35-41.5 1.8 cis-1,2-Dichloroethene ND ug/m3 05/03/15 00:58 156-59-21.5 1.8 trans-1,2-Dichloroethene ND ug/m3 05/03/15 00:58 156-60-51.5 1.8 1,2-Dichloropropane ND ug/m3 05/03/15 00:58 78-87-51.7 1.8 cis-1,3-Dichloropropene ND ug/m3 05/03/15 00:58 10061-01-51.7 1.8 trans-1,3-Dichloropropene ND ug/m3 05/03/15 00:58 10061-02-61.7 1.8 Dichlorotetrafluoroethane ND ug/m3 05/03/15 00:58 76-14-22.6 1.8 Ethyl acetate 17.1 ug/m3 05/03/15 00:58 141-78-61.3 1.8 Ethylbenzene 4.4 ug/m3 05/03/15 00:58 100-41-41.6 1.8 4-Ethyltoluene ND ug/m3 05/03/15 00:58 622-96-84.5 1.8 n-Heptane 9.6 ug/m3 05/03/15 00:58 142-82-51.5 1.8 Hexachloro-1,3-butadiene ND ug/m3 05/03/15 00:58 87-68-39.8 1.8 n-Hexane 24.9 ug/m3 05/03/15 00:58 110-54-31.3 1.8 2-Hexanone 3.5 ug/m3 05/03/15 00:58 591-78-61.5 1.8 Methylene Chloride ND ug/m3 05/03/15 00:58 75-09-26.4 1.8 4-Methyl-2-pentanone (MIBK)5.9 ug/m3 05/03/15 00:58 108-10-11.5 1.8 Methyl-tert-butyl ether ND ug/m3 05/03/15 00:58 1634-04-41.3 1.8 Naphthalene 8.2 ug/m3 05/03/15 00:58 91-20-34.8 1.8 Propylene 277 ug/m3 05/03/15 00:58 115-07-1 E0.63 1.8 Styrene ND ug/m3 05/03/15 00:58 100-42-53.9 1.8 1,1,2,2-Tetrachloroethane ND ug/m3 05/03/15 00:58 79-34-51.3 1.8 Tetrachloroethene ND ug/m3 05/03/15 00:58 127-18-41.2 1.8 Tetrahydrofuran 11.4 ug/m3 05/03/15 00:58 109-99-91.1 1.8 Toluene 33.0 ug/m3 05/03/15 00:58 108-88-31.4 1.8 1,2,4-Trichlorobenzene ND ug/m3 05/03/15 00:58 120-82-16.8 1.8 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, Inc..Date: 06/04/2015 02:06 PM Pace Analytical Services, Inc. 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 7 of 21 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92247269 Hendrick Auto Mall Sample:SG-1 Lab ID:92247269001 Collected:04/27/15 11:33 Received:04/27/15 16:50 Matrix:Air Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit Analytical Method: TO-15TO15 MSV AIR 1,1,1-Trichloroethane ND ug/m3 05/03/15 00:58 71-55-62.0 1.8 1,1,2-Trichloroethane ND ug/m3 05/03/15 00:58 79-00-50.99 1.8 Trichloroethene ND ug/m3 05/03/15 00:58 79-01-60.99 1.8 Trichlorofluoromethane ND ug/m3 05/03/15 00:58 75-69-42.1 1.8 1,1,2-Trichlorotrifluoroethane ND ug/m3 05/03/15 00:58 76-13-12.9 1.8 1,2,4-Trimethylbenzene 6.0 ug/m3 05/03/15 00:58 95-63-64.5 1.8 1,3,5-Trimethylbenzene ND ug/m3 05/03/15 00:58 108-67-84.5 1.8 Vinyl acetate 9.4 ug/m3 05/03/15 00:58 108-05-41.3 1.8 Vinyl chloride ND ug/m3 05/03/15 00:58 75-01-40.47 1.8 m&p-Xylene 13.5 ug/m3 05/03/15 00:58 179601-23-13.2 1.8 o-Xylene 5.5 ug/m3 05/03/15 00:58 95-47-61.6 1.8 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, Inc..Date: 06/04/2015 02:06 PM Pace Analytical Services, Inc. 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 8 of 21 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92247269 Hendrick Auto Mall Sample:SG-2 Lab ID:92247269002 Collected:04/27/15 11:41 Received:04/27/15 16:50 Matrix:Air Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit Analytical Method: TO-15TO15 MSV AIR Acetone 438 ug/m3 05/05/15 00:46 67-64-1 E12.8 5.29 Benzene 10.8 ug/m3 05/03/15 02:00 71-43-20.57 1.74 Bromodichloromethane ND ug/m3 05/03/15 02:00 75-27-42.4 1.74 Bromoform ND ug/m3 05/03/15 02:00 75-25-23.7 1.74 Bromomethane ND ug/m3 05/03/15 02:00 74-83-91.4 1.74 1,3-Butadiene ND ug/m3 05/03/15 02:00 106-99-00.78 1.74 2-Butanone (MEK)103 ug/m3 05/05/15 00:46 78-93-33.2 5.29 Carbon disulfide 30.8 ug/m3 05/03/15 02:00 75-15-01.1 1.74 Carbon tetrachloride ND ug/m3 05/03/15 02:00 56-23-51.1 1.74 Chlorobenzene ND ug/m3 05/03/15 02:00 108-90-71.6 1.74 Chloroethane 0.96 ug/m3 05/03/15 02:00 75-00-30.94 1.74 Chloroform 2.2 ug/m3 05/03/15 02:00 67-66-30.86 1.74 Chloromethane 2.6 ug/m3 05/03/15 02:00 74-87-30.73 1.74 Cyclohexane 129 ug/m3 05/03/15 02:00 110-82-71.2 1.74 Dibromochloromethane ND ug/m3 05/03/15 02:00 124-48-13.0 1.74 1,2-Dibromoethane (EDB)ND ug/m3 05/03/15 02:00 106-93-42.7 1.74 1,2-Dichlorobenzene ND ug/m3 05/03/15 02:00 95-50-12.1 1.74 1,3-Dichlorobenzene ND ug/m3 05/03/15 02:00 541-73-15.3 1.74 1,4-Dichlorobenzene 279 ug/m3 05/03/15 02:00 106-46-75.3 1.74 Dichlorodifluoromethane 3.5 ug/m3 05/03/15 02:00 75-71-81.8 1.74 1,1-Dichloroethane ND ug/m3 05/03/15 02:00 75-34-31.4 1.74 1,2-Dichloroethane ND ug/m3 05/03/15 02:00 107-06-20.71 1.74 1,1-Dichloroethene ND ug/m3 05/03/15 02:00 75-35-41.4 1.74 cis-1,2-Dichloroethene 1.7 ug/m3 05/03/15 02:00 156-59-21.4 1.74 trans-1,2-Dichloroethene ND ug/m3 05/03/15 02:00 156-60-51.4 1.74 1,2-Dichloropropane ND ug/m3 05/03/15 02:00 78-87-51.6 1.74 cis-1,3-Dichloropropene ND ug/m3 05/03/15 02:00 10061-01-51.6 1.74 trans-1,3-Dichloropropene ND ug/m3 05/03/15 02:00 10061-02-61.6 1.74 Dichlorotetrafluoroethane ND ug/m3 05/03/15 02:00 76-14-22.5 1.74 Ethyl acetate 6.4 ug/m3 05/03/15 02:00 141-78-61.3 1.74 Ethylbenzene 5.1 ug/m3 05/03/15 02:00 100-41-41.5 1.74 4-Ethyltoluene ND ug/m3 05/03/15 02:00 622-96-84.3 1.74 n-Heptane 10.4 ug/m3 05/03/15 02:00 142-82-51.4 1.74 Hexachloro-1,3-butadiene ND ug/m3 05/03/15 02:00 87-68-39.4 1.74 n-Hexane 41.4 ug/m3 05/03/15 02:00 110-54-31.3 1.74 2-Hexanone 11.0 ug/m3 05/03/15 02:00 591-78-61.4 1.74 Methylene Chloride ND ug/m3 05/03/15 02:00 75-09-26.1 1.74 4-Methyl-2-pentanone (MIBK)10.1 ug/m3 05/03/15 02:00 108-10-11.4 1.74 Methyl-tert-butyl ether ND ug/m3 05/03/15 02:00 1634-04-41.3 1.74 Naphthalene 7.1 ug/m3 05/03/15 02:00 91-20-34.6 1.74 Propylene 268 ug/m3 05/05/15 00:46 115-07-11.9 5.29 Styrene 3.8 ug/m3 05/03/15 02:00 100-42-53.8 1.74 1,1,2,2-Tetrachloroethane ND ug/m3 05/03/15 02:00 79-34-51.2 1.74 Tetrachloroethene 1.8 ug/m3 05/03/15 02:00 127-18-41.2 1.74 Tetrahydrofuran 14.7 ug/m3 05/03/15 02:00 109-99-91.0 1.74 Toluene 30.9 ug/m3 05/03/15 02:00 108-88-31.3 1.74 1,2,4-Trichlorobenzene ND ug/m3 05/03/15 02:00 120-82-16.6 1.74 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, Inc..Date: 06/04/2015 02:06 PM Pace Analytical Services, Inc. 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 9 of 21 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92247269 Hendrick Auto Mall Sample:SG-2 Lab ID:92247269002 Collected:04/27/15 11:41 Received:04/27/15 16:50 Matrix:Air Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit Analytical Method: TO-15TO15 MSV AIR 1,1,1-Trichloroethane ND ug/m3 05/03/15 02:00 71-55-61.9 1.74 1,1,2-Trichloroethane ND ug/m3 05/03/15 02:00 79-00-50.96 1.74 Trichloroethene ND ug/m3 05/03/15 02:00 79-01-60.96 1.74 Trichlorofluoromethane ND ug/m3 05/03/15 02:00 75-69-42.0 1.74 1,1,2-Trichlorotrifluoroethane ND ug/m3 05/03/15 02:00 76-13-12.8 1.74 1,2,4-Trimethylbenzene 5.5 ug/m3 05/03/15 02:00 95-63-64.3 1.74 1,3,5-Trimethylbenzene ND ug/m3 05/03/15 02:00 108-67-84.3 1.74 Vinyl acetate 21.2 ug/m3 05/03/15 02:00 108-05-41.2 1.74 Vinyl chloride ND ug/m3 05/03/15 02:00 75-01-40.45 1.74 m&p-Xylene 16.2 ug/m3 05/03/15 02:00 179601-23-13.1 1.74 o-Xylene 6.2 ug/m3 05/03/15 02:00 95-47-61.5 1.74 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, Inc..Date: 06/04/2015 02:06 PM Pace Analytical Services, Inc. 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 10 of 21 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92247269 Hendrick Auto Mall Sample:SG-3 Lab ID:92247269003 Collected:04/27/15 12:05 Received:04/27/15 16:50 Matrix:Air Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit Analytical Method: TO-15TO15 MSV AIR Acetone 394 ug/m3 05/03/15 01:29 67-64-1 E4.5 1.87 Benzene 12.2 ug/m3 05/03/15 01:29 71-43-20.61 1.87 Bromodichloromethane ND ug/m3 05/03/15 01:29 75-27-42.5 1.87 Bromoform ND ug/m3 05/03/15 01:29 75-25-23.9 1.87 Bromomethane ND ug/m3 05/03/15 01:29 74-83-91.5 1.87 1,3-Butadiene ND ug/m3 05/03/15 01:29 106-99-00.84 1.87 2-Butanone (MEK)138 ug/m3 05/03/15 01:29 78-93-31.1 1.87 Carbon disulfide 23.0 ug/m3 05/03/15 01:29 75-15-01.2 1.87 Carbon tetrachloride ND ug/m3 05/03/15 01:29 56-23-51.2 1.87 Chlorobenzene ND ug/m3 05/03/15 01:29 108-90-71.8 1.87 Chloroethane 1.6 ug/m3 05/03/15 01:29 75-00-31.0 1.87 Chloroform ND ug/m3 05/03/15 01:29 67-66-30.93 1.87 Chloromethane 1.4 ug/m3 05/03/15 01:29 74-87-30.79 1.87 Cyclohexane 115 ug/m3 05/03/15 01:29 110-82-71.3 1.87 Dibromochloromethane ND ug/m3 05/03/15 01:29 124-48-13.2 1.87 1,2-Dibromoethane (EDB)ND ug/m3 05/03/15 01:29 106-93-42.9 1.87 1,2-Dichlorobenzene ND ug/m3 05/03/15 01:29 95-50-12.3 1.87 1,3-Dichlorobenzene ND ug/m3 05/03/15 01:29 541-73-15.7 1.87 1,4-Dichlorobenzene 243 ug/m3 05/03/15 01:29 106-46-75.7 1.87 Dichlorodifluoromethane 3.0 ug/m3 05/03/15 01:29 75-71-81.9 1.87 1,1-Dichloroethane ND ug/m3 05/03/15 01:29 75-34-31.5 1.87 1,2-Dichloroethane ND ug/m3 05/03/15 01:29 107-06-20.77 1.87 1,1-Dichloroethene ND ug/m3 05/03/15 01:29 75-35-41.5 1.87 cis-1,2-Dichloroethene ND ug/m3 05/03/15 01:29 156-59-21.5 1.87 trans-1,2-Dichloroethene ND ug/m3 05/03/15 01:29 156-60-51.5 1.87 1,2-Dichloropropane ND ug/m3 05/03/15 01:29 78-87-51.8 1.87 cis-1,3-Dichloropropene ND ug/m3 05/03/15 01:29 10061-01-51.7 1.87 trans-1,3-Dichloropropene ND ug/m3 05/03/15 01:29 10061-02-61.7 1.87 Dichlorotetrafluoroethane ND ug/m3 05/03/15 01:29 76-14-22.7 1.87 Ethyl acetate 4.8 ug/m3 05/03/15 01:29 141-78-61.4 1.87 Ethylbenzene 5.2 ug/m3 05/03/15 01:29 100-41-41.6 1.87 4-Ethyltoluene ND ug/m3 05/03/15 01:29 622-96-84.7 1.87 n-Heptane 11.5 ug/m3 05/03/15 01:29 142-82-51.6 1.87 Hexachloro-1,3-butadiene ND ug/m3 05/03/15 01:29 87-68-310.1 1.87 n-Hexane 32.2 ug/m3 05/03/15 01:29 110-54-31.3 1.87 2-Hexanone 9.4 ug/m3 05/03/15 01:29 591-78-61.6 1.87 Methylene Chloride ND ug/m3 05/03/15 01:29 75-09-26.6 1.87 4-Methyl-2-pentanone (MIBK)8.2 ug/m3 05/03/15 01:29 108-10-11.6 1.87 Methyl-tert-butyl ether ND ug/m3 05/03/15 01:29 1634-04-41.4 1.87 Naphthalene 5.3 ug/m3 05/03/15 01:29 91-20-35.0 1.87 Propylene 132 ug/m3 05/03/15 01:29 115-07-1 E0.65 1.87 Styrene ND ug/m3 05/03/15 01:29 100-42-54.0 1.87 1,1,2,2-Tetrachloroethane ND ug/m3 05/03/15 01:29 79-34-51.3 1.87 Tetrachloroethene ND ug/m3 05/03/15 01:29 127-18-41.3 1.87 Tetrahydrofuran 13.5 ug/m3 05/03/15 01:29 109-99-91.1 1.87 Toluene 33.8 ug/m3 05/03/15 01:29 108-88-31.4 1.87 1,2,4-Trichlorobenzene ND ug/m3 05/03/15 01:29 120-82-17.0 1.87 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, Inc..Date: 06/04/2015 02:06 PM Pace Analytical Services, Inc. 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 11 of 21 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92247269 Hendrick Auto Mall Sample:SG-3 Lab ID:92247269003 Collected:04/27/15 12:05 Received:04/27/15 16:50 Matrix:Air Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit Analytical Method: TO-15TO15 MSV AIR 1,1,1-Trichloroethane ND ug/m3 05/03/15 01:29 71-55-62.1 1.87 1,1,2-Trichloroethane ND ug/m3 05/03/15 01:29 79-00-51.0 1.87 Trichloroethene ND ug/m3 05/03/15 01:29 79-01-61.0 1.87 Trichlorofluoromethane ND ug/m3 05/03/15 01:29 75-69-42.1 1.87 1,1,2-Trichlorotrifluoroethane ND ug/m3 05/03/15 01:29 76-13-13.0 1.87 1,2,4-Trimethylbenzene 5.7 ug/m3 05/03/15 01:29 95-63-64.7 1.87 1,3,5-Trimethylbenzene ND ug/m3 05/03/15 01:29 108-67-84.7 1.87 Vinyl acetate 17.1 ug/m3 05/03/15 01:29 108-05-41.3 1.87 Vinyl chloride ND ug/m3 05/03/15 01:29 75-01-40.49 1.87 m&p-Xylene 16.0 ug/m3 05/03/15 01:29 179601-23-13.3 1.87 o-Xylene 6.1 ug/m3 05/03/15 01:29 95-47-61.6 1.87 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, Inc..Date: 06/04/2015 02:06 PM Pace Analytical Services, Inc. 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 12 of 21 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92247269 Hendrick Auto Mall Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. QC Batch: QC Batch Method: Analysis Method: Analysis Description: AIR/23155 TO-15 TO-15 TO15 MSV AIR Low Level Associated Lab Samples:92247269001, 92247269002, 92247269003 Parameter Units Blank Result Reporting Limit Qualifiers METHOD BLANK:1954258 Associated Lab Samples:92247269001, 92247269002, 92247269003 Matrix:Air Analyzed 1,1,1-Trichloroethane ug/m3 ND 1.1 05/02/15 19:37 1,1,2,2-Tetrachloroethane ug/m3 ND 0.70 05/02/15 19:37 1,1,2-Trichloroethane ug/m3 ND 0.55 05/02/15 19:37 1,1,2-Trichlorotrifluoroethane ug/m3 ND 1.6 05/02/15 19:37 1,1-Dichloroethane ug/m3 ND 0.82 05/02/15 19:37 1,1-Dichloroethene ug/m3 ND 0.81 05/02/15 19:37 1,2,4-Trichlorobenzene ug/m3 ND 3.8 05/02/15 19:37 1,2,4-Trimethylbenzene ug/m3 ND 2.5 05/02/15 19:37 1,2-Dibromoethane (EDB)ug/m3 ND 1.6 05/02/15 19:37 1,2-Dichlorobenzene ug/m3 ND 1.2 05/02/15 19:37 1,2-Dichloroethane ug/m3 ND 0.41 05/02/15 19:37 1,2-Dichloropropane ug/m3 ND 0.94 05/02/15 19:37 1,3,5-Trimethylbenzene ug/m3 ND 2.5 05/02/15 19:37 1,3-Butadiene ug/m3 ND 0.45 05/02/15 19:37 1,3-Dichlorobenzene ug/m3 ND 3.1 05/02/15 19:37 1,4-Dichlorobenzene ug/m3 ND 3.1 05/02/15 19:37 2-Butanone (MEK)ug/m3 ND 0.60 05/02/15 19:37 2-Hexanone ug/m3 ND 0.83 05/02/15 19:37 4-Ethyltoluene ug/m3 ND 2.5 05/02/15 19:37 4-Methyl-2-pentanone (MIBK)ug/m3 ND 0.83 05/02/15 19:37 Acetone ug/m3 ND 2.4 05/02/15 19:37 Benzene ug/m3 ND 0.32 05/02/15 19:37 Bromodichloromethane ug/m3 ND 1.4 05/02/15 19:37 Bromoform ug/m3 ND 2.1 05/02/15 19:37 Bromomethane ug/m3 ND 0.79 05/02/15 19:37 Carbon disulfide ug/m3 ND 0.63 05/02/15 19:37 Carbon tetrachloride ug/m3 ND 0.64 05/02/15 19:37 Chlorobenzene ug/m3 ND 0.94 05/02/15 19:37 Chloroethane ug/m3 ND 0.54 05/02/15 19:37 Chloroform ug/m3 ND 0.50 05/02/15 19:37 Chloromethane ug/m3 ND 0.42 05/02/15 19:37 cis-1,2-Dichloroethene ug/m3 ND 0.81 05/02/15 19:37 cis-1,3-Dichloropropene ug/m3 ND 0.92 05/02/15 19:37 Cyclohexane ug/m3 ND 0.70 05/02/15 19:37 Dibromochloromethane ug/m3 ND 1.7 05/02/15 19:37 Dichlorodifluoromethane ug/m3 ND 1.0 05/02/15 19:37 Dichlorotetrafluoroethane ug/m3 ND 1.4 05/02/15 19:37 Ethyl acetate ug/m3 ND 0.73 05/02/15 19:37 Ethylbenzene ug/m3 ND 0.88 05/02/15 19:37 Hexachloro-1,3-butadiene ug/m3 ND 5.4 05/02/15 19:37 m&p-Xylene ug/m3 ND 1.8 05/02/15 19:37 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, Inc..Date: 06/04/2015 02:06 PM Pace Analytical Services, Inc. 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 13 of 21 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92247269 Hendrick Auto Mall Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. Parameter Units Blank Result Reporting Limit Qualifiers METHOD BLANK:1954258 Associated Lab Samples:92247269001, 92247269002, 92247269003 Matrix:Air Analyzed Methyl-tert-butyl ether ug/m3 ND 0.73 05/02/15 19:37 Methylene Chloride ug/m3 ND 3.5 05/02/15 19:37 n-Heptane ug/m3 ND 0.83 05/02/15 19:37 n-Hexane ug/m3 ND 0.72 05/02/15 19:37 Naphthalene ug/m3 ND 2.7 05/02/15 19:37 o-Xylene ug/m3 ND 0.88 05/02/15 19:37 Propylene ug/m3 ND 0.35 05/02/15 19:37 Styrene ug/m3 ND 2.2 05/02/15 19:37 Tetrachloroethene ug/m3 ND 0.69 05/02/15 19:37 Tetrahydrofuran ug/m3 ND 0.60 05/02/15 19:37 Toluene ug/m3 ND 0.77 05/02/15 19:37 trans-1,2-Dichloroethene ug/m3 ND 0.81 05/02/15 19:37 trans-1,3-Dichloropropene ug/m3 ND 0.92 05/02/15 19:37 Trichloroethene ug/m3 ND 0.55 05/02/15 19:37 Trichlorofluoromethane ug/m3 ND 1.1 05/02/15 19:37 Vinyl acetate ug/m3 ND 0.72 05/02/15 19:37 Vinyl chloride ug/m3 ND 0.26 05/02/15 19:37 Parameter Units LCS Result % Rec Limits Qualifiers% RecConc. 1954259LABORATORY CONTROL SAMPLE: LCSSpike 1,1,1-Trichloroethane ug/m3 57.955.5 104 72-140 1,1,2,2-Tetrachloroethane ug/m3 91.869.8 131 68-137 1,1,2-Trichloroethane ug/m3 64.055.5 115 66-138 1,1,2-Trichlorotrifluoroethane ug/m3 77.077.9 99 70-132 1,1-Dichloroethane ug/m3 41.541.2 101 68-137 1,1-Dichloroethene ug/m3 42.340.3 105 73-138 1,2,4-Trichlorobenzene ug/m3 89.275.5 118 48-150 1,2,4-Trimethylbenzene ug/m3 50.650 101 75-134 1,2-Dibromoethane (EDB)ug/m3 88.078.1 113 75-132 1,2-Dichlorobenzene ug/m3 69.761.2 114 71-129 1,2-Dichloroethane ug/m3 44.641.2 108 73-139 1,2-Dichloropropane ug/m3 50.747 108 70-130 1,3,5-Trimethylbenzene ug/m3 49.950 100 75-133 1,3-Butadiene ug/m3 21.322.5 95 66-135 1,3-Dichlorobenzene ug/m3 64.161.2 105 75-131 1,4-Dichlorobenzene ug/m3 63.561.2 104 69-135 2-Butanone (MEK)ug/m3 32.930 110 67-131 2-Hexanone ug/m3 48.841.7 117 72-130 4-Ethyltoluene ug/m3 46.550 93 75-130 4-Methyl-2-pentanone (MIBK)ug/m3 44.241.7 106 68-134 Acetone ug/m3 22.724.2 94 63-144 Benzene ug/m3 35.032.5 108 64-139 Bromodichloromethane ug/m3 72.468.2 106 75-134 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, Inc..Date: 06/04/2015 02:06 PM Pace Analytical Services, Inc. 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 14 of 21 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92247269 Hendrick Auto Mall Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. Parameter Units LCS Result % Rec Limits Qualifiers% RecConc. 1954259LABORATORY CONTROL SAMPLE: LCSSpike Bromoform ug/m3 131105 124 72-130 Bromomethane ug/m3 35.039.5 89 71-132 Carbon disulfide ug/m3 30.931.7 97 56-139 Carbon tetrachloride ug/m3 66.364 104 75-150 Chlorobenzene ug/m3 53.746.8 115 71-132 Chloroethane ug/m3 25.926.8 97 71-129 Chloroform ug/m3 50.649.7 102 73-136 Chloromethane ug/m3 19.321 92 52-143 cis-1,2-Dichloroethene ug/m3 45.540.3 113 64-137 cis-1,3-Dichloropropene ug/m3 50.946.2 110 75-128 Cyclohexane ug/m3 34.935 100 62-143 Dibromochloromethane ug/m3 98.586.6 114 75-136 Dichlorodifluoromethane ug/m3 49.050.3 97 70-141 Dichlorotetrafluoroethane ug/m3 68.471.1 96 71-139 Ethyl acetate ug/m3 37.036.6 101 64-137 Ethylbenzene ug/m3 52.044.2 118 71-136 Hexachloro-1,3-butadiene ug/m3 130108 120 51-150 m&p-Xylene ug/m3 52.344.2 118 71-134 Methyl-tert-butyl ether ug/m3 36.536.7 100 73-134 Methylene Chloride ug/m3 38.735.3 109 64-130 n-Heptane ug/m3 45.141.7 108 63-135 n-Hexane ug/m3 35.535.8 99 69-135 Naphthalene ug/m3 62.153.3 116 43-150 o-Xylene ug/m3 56.344.2 128 75-134 Propylene ug/m3 15.717.5 90 58-135 Styrene ug/m3 41.043.3 95 75-133 Tetrachloroethene ug/m3 79.669 115 66-137 Tetrahydrofuran ug/m3 32.330 108 58-135 Toluene ug/m3 41.938.3 109 70-129 trans-1,2-Dichloroethene ug/m3 42.040.3 104 61-140 trans-1,3-Dichloropropene ug/m3 53.446.2 116 75-134 Trichloroethene ug/m3 59.954.6 110 70-134 Trichlorofluoromethane ug/m3 52.057.1 91 67-140 Vinyl acetate ug/m3 37.235.8 104 60-139 Vinyl chloride ug/m3 25.026 96 72-129 Parameter Units Dup Result QualifiersRPDResult 10304522001 1954268SAMPLE DUPLICATE: 1,1,1-Trichloroethane ug/m3 NDND 1,1,2,2-Tetrachloroethane ug/m3 NDND 1,1,2-Trichloroethane ug/m3 NDND 1,1,2-Trichlorotrifluoroethane ug/m3 NDND 1,1-Dichloroethane ug/m3 NDND 1,1-Dichloroethene ug/m3 NDND REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, Inc..Date: 06/04/2015 02:06 PM Pace Analytical Services, Inc. 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 15 of 21 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92247269 Hendrick Auto Mall Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. Parameter Units Dup Result QualifiersRPDResult 10304522001 1954268SAMPLE DUPLICATE: 1,2,4-Trichlorobenzene ug/m3 NDND 1,2,4-Trimethylbenzene ug/m3 3.2JND 1,2-Dibromoethane (EDB)ug/m3 NDND 1,2-Dichlorobenzene ug/m3 NDND 1,2-Dichloroethane ug/m3 NDND 1,2-Dichloropropane ug/m3 NDND 1,3,5-Trimethylbenzene ug/m3 NDND 1,3-Butadiene ug/m3 NDND 1,3-Dichlorobenzene ug/m3 NDND 1,4-Dichlorobenzene ug/m3 NDND 2-Butanone (MEK)ug/m3 ND1.6 2-Hexanone ug/m3 NDND 4-Ethyltoluene ug/m3 NDND 4-Methyl-2-pentanone (MIBK)ug/m3 NDND Acetone ug/m3 4.6 64.8 Benzene ug/m3 NDND Bromodichloromethane ug/m3 NDND Bromoform ug/m3 NDND Bromomethane ug/m3 NDND Carbon disulfide ug/m3 NDND Carbon tetrachloride ug/m3 NDND Chlorobenzene ug/m3 NDND Chloroethane ug/m3 NDND Chloroform ug/m3 10.4 911.3 Chloromethane ug/m3 NDND cis-1,2-Dichloroethene ug/m3 37.2 539.0 cis-1,3-Dichloropropene ug/m3 NDND Cyclohexane ug/m3 NDND Dibromochloromethane ug/m3 NDND Dichlorodifluoromethane ug/m3 4.8 74.5 Dichlorotetrafluoroethane ug/m3 NDND Ethyl acetate ug/m3 NDND Ethylbenzene ug/m3 NDND Hexachloro-1,3-butadiene ug/m3 NDND m&p-Xylene ug/m3 NDND Methyl-tert-butyl ether ug/m3 NDND Methylene Chloride ug/m3 NDND n-Heptane ug/m3 NDND n-Hexane ug/m3 NDND Naphthalene ug/m3 4JND o-Xylene ug/m3 NDND Propylene ug/m3 NDND Styrene ug/m3 NDND Tetrachloroethene ug/m3 1990 E,R176888 Tetrahydrofuran ug/m3 NDND Toluene ug/m3 1.5 101.7 trans-1,2-Dichloroethene ug/m3 2.0 102.3 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, Inc..Date: 06/04/2015 02:06 PM Pace Analytical Services, Inc. 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 16 of 21 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92247269 Hendrick Auto Mall Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. Parameter Units Dup Result QualifiersRPDResult 10304522001 1954268SAMPLE DUPLICATE: trans-1,3-Dichloropropene ug/m3 NDND Trichloroethene ug/m3 146 9160 Trichlorofluoromethane ug/m3 2.5 62.6 Vinyl acetate ug/m3 NDND Vinyl chloride ug/m3 NDND REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, Inc..Date: 06/04/2015 02:06 PM Pace Analytical Services, Inc. 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 17 of 21 #=QL# QUALIFIERS Pace Project No.: Project: 92247269 Hendrick Auto Mall DEFINITIONS DF - Dilution Factor, if reported, represents the factor applied to the reported data due to dilution of the sample aliquot. ND - Not Detected at or above adjusted reporting limit. J - Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit. MDL - Adjusted Method Detection Limit. PQL - Practical Quantitation Limit. RL - Reporting Limit. S - Surrogate 1,2-Diphenylhydrazine decomposes to and cannot be separated from Azobenzene using Method 8270. The result for each analyte is a combined concentration. Consistent with EPA guidelines, unrounded data are displayed and have been used to calculate % recovery and RPD values. LCS(D) - Laboratory Control Sample (Duplicate) MS(D) - Matrix Spike (Duplicate) DUP - Sample Duplicate RPD - Relative Percent Difference NC - Not Calculable. SG - Silica Gel - Clean-Up U - Indicates the compound was analyzed for, but not detected. Acid preservation may not be appropriate for 2 Chloroethylvinyl ether, Styrene, and Vinyl chloride. A separate vial preserved to a pH of 4-5 is recommended in SW846 Chapter 4 for the analysis of Acrolein and Acrylonitrile by EPA Method 8260. N-Nitrosodiphenylamine decomposes and cannot be separated from Diphenylamine using Method 8270. The result reported foreach analyte is a combined concentration. Pace Analytical is TNI accredited. Contact your Pace PM for the current list of accredited analytes. TNI - The NELAC Institute. LABORATORIES Pace Analytical Services - MinneapolisPASI-M ANALYTE QUALIFIERS Analyte concentration exceeded the calibration range. The reported result is estimated.E RPD value was outside control limits.R1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, Inc..Date: 06/04/2015 02:06 PM Pace Analytical Services, Inc. 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 18 of 21 #=CR# QUALITY CONTROL DATA CROSS REFERENCE TABLE Pace Project No.: Project: 92247269 Hendrick Auto Mall Lab ID Sample ID QC Batch Method QC Batch Analytical Method Analytical Batch 92247269001 AIR/23155SG-1 TO-15 92247269002 AIR/23155SG-2 TO-15 92247269003 AIR/23155SG-3 TO-15 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, Inc..Date: 06/04/2015 02:06 PM Pace Analytical Services, Inc. 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 19 of 21 Page 20 of 21 Page 21 of 21 Data Review: ECS  Air Project #10304515, Charlotte Project #92247269    A data review was requested on Pace air project 10304515. Client would like a data review to confirm  detections of 1,4‐dichlorobenzene in all samples for the project, as well as the detection of 1,3‐ dichlorobenzene in sample 92247269001. Client indicated that chlorinated solvents were not expected  from this sampling site. In order to review all potential sources of contamination or carryover, the  following actions were taken:    1. A complete review of canister and flow controller history for carryover or contamination  2. A review of the analytical batch set that included this project for possible carryover  3. A review of the previous analytical batch for carryover or contamination  4. A review of the analytical system for trends or contamination    After review of the above items, there are no discrepancies to report.    Previous flow controller and canister history was non detect for both chlorinated solvents of interest.  Samples were run under method compliant conditions with a clean method blank. Additionally, samples  analyzed within the same analytical batch did not show elevated solvent content. Lastly, the previous  analytical set did not have elevated dichlorobenzene content, indicating carryover or contamination did  not factor into the detections of these compounds for this project.