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HomeMy WebLinkAboutMO-5861_2112_CA_MRP_20200123SUBSEQUENT MONITORING REPORT Triangle Texaco (Incident # 21112) 201 North Main Street Mount Holly, Gaston County, North Carolina January 23, 2020 Terracon Project No. 71179050 Prepared for: North Carolina Department of Environmental Quality Division of Waste Management Raleigh, North Carolina Prepared by: Terracon Consultants, Inc. Charlotte, North Carolina Table of Contents A.SITE INFORMATION ...........................................................................................................1 B.EXECUTIVE SUMMARY ......................................................................................................2 C.SITE HISTORY AND CHARACTERIZATION ........................................................................5 C.1 Site Setting ......................................................................................................................5 C.2 Release Summary ............................................................................................................5 C.3 Previous Investigations ...................................................................................................5 C.4 Water Supply Wells .........................................................................................................7 C.5 Surface Water ..................................................................................................................8 C.6 Land Use Information ......................................................................................................8 D.ASSESSMENT INFORMATION ...........................................................................................8 D.1 Site Geology and Hydrogeology .....................................................................................8 D.2 Sampling Activities ..........................................................................................................9 D.2.1 Free Product Evaluation ................................................................................................9 D.2.2 Groundwater Sampling Activities ...................................................................................9 D.2.3 Analytical Results ........................................................................................................ 10 D.3 Remediation System...................................................................................................... 10 E.CONCLUSIONS AND RECOMMENDATIONS .................................................................... 11 FIGURES Figure 1: Site Location Map Figure 2: Site Plan Figure 3: Receptor Map Figure 4: Groundwater Elevation Map Figure 5: Groundwater Analytical Results TABLES Table 1: Historical UST Information Table 2: Monitoring Well Construction Information and Historical Groundwater Elevations Table 3: Summary of Groundwater Analytical Results APPENDIX Appendix A: Laboratory Analytical Results and Chain of Custody Forms Appendix B: Field Notes Appendix C: Photographs Appendix D: Industrial Discharge Monitoring Report – November 2019 Triangle Texaco Mount Holly, North Carolina Project Number 71179050 Incident No. 21112 January 23, 2020 Responsive ■Resourceful ■Reliable 1 SUBSEQUENT MONITORING REPORT A. SITE INFORMATION Date of Report:January 23, 2020 NCDEQ Incident No:21112 Facility ID:0-016627 Site Name:Triangle Texaco Site Location:201 North Main Street Mount Holly, Gaston County, North Carolina Latitude:N 35.490273 Longitude:W -81.867140 UST Owner/Operator:Petroleum World, Inc. 681 NC 120 Highway Mooresboro, North Carolina 28114 Current Property Owner: Chappell Builders LLC 641 Alexis High Shoals Road Dallas, North Carolina 28034-8654 Current Property Occupant:Gearheads Automotive Consultant:Terracon Consultants, Inc. (Contact: Flora D’Souza) 2701 Westport Road Charlotte, North Carolina 28208 (704) 509-1777 Laboratory:Pace Analytical Services (NCDEQ No. 5342) 9800 Kincey Avenue, Suite 100 Huntersville, North Carolina 28078 (704) 875-9092 Release Information:Release Discovery Date: December 9, 1999 Estimated Quantity: Unknown Cause of Release: 6,000-gallon gasoline UST system Source of Release: Gasoline UST system Currently Active Tanks: None – Tank reportedly removed Triangle Texaco Mount Holly, North Carolina Project Number 71179050 Incident No. 21112 January 23, 2020 Responsive ■Resourceful ■Reliable 2 I, M. Neal McElveen, a Professional Engineer for Terracon Consultants, Inc., do certify that the information contained in this report is correct and accurate to the best of my knowledge. M. Neal McElveen, P.E. NC License No. 20699 Terracon Consultants, Inc. is licensed to practice geology/engineering in North Carolina. The certification number of the corporation is F-0869. B. EXECUTIVE SUMMARY The purpose of this report is to evaluate the status of groundwater quality at Triangle Texaco (Incident No. 21112). Terracon completed this report to summarize the findings of assessment activities performed on November 19, 2019 and document dual-phase extraction (DPE) remediation system activities. The site is located at 201 North Main Street in Mount Holly, Gaston County, North Carolina in an area developed as commercial and residential. The site is currently occupied by Gearheads Automotive. Based on regulatory file review information, the site formerly operated one 6,000-gallon gasoline UST (Table 1). A release was discovered on December 9, 1999 during UST removal activities. A 20-Day Report dated January 17, 2000 was submitted to the North Carolina Department of Environment, Health, and Natural Resources [NCDEHNR (currently NCDEQ)] – Mooresville Regional Office by Shield Engineering, Inc. (Shield). Reportedly, the fuel dispensers and product piping were not removed during the UST removal activities (Shield, 2000a). Shield did not identify water supply wells within 1,500 feet of the source area. The site and surrounding properties are reportedly connected to municipal water provided by the Town of Mount Holly (Shield, 2016). In the early 2000s, Shield installed 25 groundwater monitoring wells at the site and was sampling the wells routinely until 2016. As a result of the presence of liquid phase hydrocarbons (LPH) in various wells on the site, Shield installed a DPE system to remediate the groundwater at the site. The DPE system was shut down in December 2016. Terracon mobilized to the site on November 19, 2019 to collect groundwater samples from monitoring wells MW-1, MW-1A, MW-2, MW-8 and MW-10. Prior to sample collection, Terracon gauged the groundwater levels and purged a minimum of three well volumes from the monitoring wells. During the sampling event, depth to groundwater in the monitoring wells ranged from approximately 22.87 feet (well MW-1) to 26.47 feet (well MW-10) below ground surface (bgs). Based on groundwater elevations, the flow direction is generally to the east-northeast. The wells were allowed to recharge a minimum of 90 percent of the original well volume before samples were collected for laboratory analysis of volatile organic compounds (VOCs) by Standard Method 6200, including methyl tert-butyl ether (MTBE), IPE, and EDB. Triangle Texaco Mount Holly, North Carolina Project Number 71179050 Incident No. 21112 January 23, 2020 Responsive ■Resourceful ■Reliable 3 According to laboratory analytical results, various petroleum constituents were detected in the five monitoring wells sampled during this event. The following constituents were detected in well MW-1 at concentrations that exceed their respective 2L standards; benzene (3,010 micrograms per liter [µg/L]), ethylbenzene (2,470 µg/L), isopropylbenzene (98.2 µg/L), naphthalene (328 µg/L), n-propylbenzene (195 µg/L), toluene (6,860 µg/L), 1,2,4-trimethylbenzene (1,820 µg/L), 1,3,5-trimethylbenzene (560 µg/L) and total xylenes (13,960 µg/L). The following constituents were detected in well MW-1A at concentrations that exceed their respective 2L standards; benzene (2,910 µg/L), 1,2-dichloroethane (16 µg/L), MTBE (666 µg/L), naphthalene (73.6 µg/L) and total xylenes (642 µg/L). Benzene (39.5 µg/L), MTBE (88.0 µg/L), naphthalene (32.8 µg/L) and n-propylbenzene (88.9 µg/L) were detected in well MW-2 at concentrations that exceed their 2L standards. The following constituents were detected in well MW-8 at concentrations that exceed their respective 2L standards; benzene (3,620 µg/L), ethylbenzene (1,030 µg/L), naphthalene (458 µg/L), n- propylbenzene (89.8 µg/L) and total xylenes (2,375 µg/L). In well MW-10, benzene (136 µg/L) and MTBE (104 µg/L) were detected at concentrations that exceed their respective 2L standards. In addition, benzene and toluene concentrations exceed their respective 2B standards by more than a factor of 10 in monitoring wells MW-1, MW-1A and MW-8. Benzene and toluene concentrations also exceed their respective 2B standard in MW-10 but at levels less than 10 times the factor. Free product was not encountered at the site during this sampling event. Various other petroleum constituents were detected in the wells at concentrations below their respective 2L standards. The on-site DPE system was reactivated by Terracon after an industrial discharge permit from the City of Mount Holly was obtained on February 15, 2018. Once power was turned on and system repairs were completed, Terracon re-started the DPE system on July 17, 2018. The industrial discharge permit requires effluent samples be collected on a quarterly basis.The remediation system did not operate 24-hours consecutively during July. It was down while awaiting parts to repair the worn stator and broken pin in the transfer pump. Once the parts were replaced, the system was turned on July 15, 2019, however, it only ran for a few hours before it went down again (possibly due to a malfunctioning ultra-sonic level indicator). Adjustments were made to the ultra-sonic level indicator and the system was restarted on multiple occasions during July through September. Composite samples were not collected during July 2019. On October 17, 2019, the ultra-sonic level indicator was repaired and reinstalled. The system has operated continuously since the system was restarted on October 17, 2019, with the exception of November 22 Triangle Texaco Mount Holly, North Carolina Project Number 71179050 Incident No. 21112 January 23, 2020 Responsive ■Resourceful ■Reliable 4 through 27 and December 1 through 12, 2019 when the system was likely down due to power outages. The most recent sampling event occurred on October 30, 2019. Analytical results indicated constituent concentrations were below the permit limits. The Industrial Discharge Monitoring Reports (IDMRs) have been submitted to the City of Mt. Holly on a monthly basis. Based on information obtained during the completion of these assessment activities, Terracon provides the following conclusions and findings. Free product was not encountered at the site during this sampling event. Benzene, 1,2-dichloroethane, ethylbenzene, isopropylbenzene, MTBE, naphthalene, n-propylbenzene, toluene, 1,2,4-trimethylbenzene, 1,3,5-trimethylbenznene, and total xylenes were detected in various wells at concentrations that exceed their respective 2L standards. Benzene and toluene concentrations exceed their respective 2B standards in wells MW-1, MW-1A, MW-8, and MW-10. Concentrations in wells MW-1, MW-1A and MW-8 exceed the 2B standard by more than a factor of 10. Since surface water is located within 500 feet of the site and groundwater contaminant concentrations exceed the applicable surface water quality standards and criteria found in 15A NCAC 2B .0200 and US EPA National Criteria by a factor of ten, the site is considered to be an intermediate risk. Other petroleum constituents were detected in the wells at concentrations below their respective 2L standards. The estimated groundwater flow direction at the site is to the northeast. Water supply wells have not been identified within 1,500 feet of the source area. According to previous Shield reports, the site and surrounding properties are connected to municipal water. Generally, constituent concentrations appear to be increasing in wells MW-1, MW-1A, and MW-8, and decreasing in MW-2 and MW-10 since the system was re-started. The DPE system at the site was reactivated on July 17th, 2019 once repairs were complete. The system was restarted multiple times from July 2019 through September 2019 due to a malfunctioning ultra-sonic indicator that was repaired on October 17th, 2019.The system has operated continuously since the system was restarted on October 17, 2019, with the exception of November 22 through 27 and December 1 through 12, 2019 when the system was likely down due to power outages. Effluent and influent samples have been collected monthly from the DPE system. The most recent sampling event was on October 30, 2019. Analytical results indicated all concentrations were below the permit limits. The IDMRs have been submitted to the City of Mt. Holly on a monthly basis. Based on the findings of our assessment and remediation activities, the following comments and recommendations are provided for the site. Terracon recommends continued operation of the on-site DPE remediation system based on the exceedance of the 2B standards by a factor of 10 in three of the on-site wells and proximity of the nearest surface water. Triangle Texaco Mount Holly, North Carolina Project Number 71179050 Incident No. 21112 January 23, 2020 Responsive ■Resourceful ■Reliable 5 Terracon also recommends the on-site wells be sampled on a semi-annual basis to monitor the results of the remediation system. C. SITE HISTORY AND CHARACTERIZATION The purpose of this report is to evaluate the status of the groundwater quality at the Triangle Texaco site. Terracon completed this report to summarize the findings of assessment activities performed on November 19, 2019 and document DPE remediation system activities. The site is located at 201 North Main Street in Mount Holly, Gaston County, North Carolina (Figure 1). This Subsequent Monitoring Report was prepared for the site in response to a request by NCDEQ Incident Manager, Mr. Scott Ryals with the Division of Waste Management, State Lead Program. The Subsequent Monitoring Report was prepared in general accordance with the 15A NCAC 2L.0115 regulations and the NCDEQ Underground Storage Tank (UST) Section Guidelines for Assessment and Corrective Action for UST Releases, dated July 15, 2008, revised December 2013, under the supervision of Mr. Christopher L. Corbitt, a North Carolina registered professional geologist (North Carolina License No. 1015). C.1 Site Setting The site is located within an area primarily developed as commercial and residential. Specific land uses are described in Section C.6 below. C.2 Release Summary Based on regulatory file review information, the site formerly operated one 6,000-gallon gasoline UST. A release was discovered on December 9, 1999 during UST removal activities. A 20-Day Report dated January 17, 2000 was submitted to the NCDEQ – Mooresville Regional Office by Shield. Reportedly, the fuel dispensers and product piping were not removed during the UST removal activities. Shield did not identify water supply wells within 1,500 feet of the source area. The site and surrounding properties are reportedly connected to municipal water provided by the Town of Mount Holly. C.3 Previous Investigations According to Shield, a previous release incident occurred at the site (Triangle Space, Incident No. 10096). Monitoring wells MW-1 through MW-7 and DMW-1 were reportedly installed as part of the previous investigation for Incident No. 10096 (Shield, 2000b). The status of Incident No. 10096 is unknown. In December 1999, Shield removed one 6,000-gallon gasoline UST from the property. A release was discovered on December 9, 1999 during the UST removal activities. Shield submitted a 20-Day Report dated January 17, 2000 to the NCDEQ – Mooresville Regional Office on behalf of Petroleum Triangle Texaco Mount Holly, North Carolina Project Number 71179050 Incident No. 21112 January 23, 2020 Responsive ■Resourceful ■Reliable 6 World, Inc. for Incident No. 21112. According to the report, petroleum impacted soils, product piping and the associated fuel dispensers were not removed during the tank closure activities. Confirmation soil samples collected in the vicinity of the former tank basin, piping, and fuel dispensers indicated petroleum constituents were detected above regulatory action levels. In February and April 2000, Shield installed monitoring wells MW-1A, MW-2A, MW-3A and DMW-2 as part of a Phase I and Phase II Limited Site Assessment (LSA). Petroleum constituents were detected above 2L standards in wells MW-1A and MW-2 and liquid phase hydrocarbons (LPH) were measured in wells MW-1 and MW-6. Analytical results of soil samples collected near the pump island (SB-1 and SB-1A) and well MW-1A indicated petroleum constituents were detected above the Soil-to-Water Maximum Soil Contaminant Concentrations [MSCCs] (Shield, 2000b). In December 2000, Shield installed three additional monitoring wells (MW-8, MW-9 and MW-10) at the site. Based on groundwater sampling results from the wells, additional monitoring wells (MW-4A, MW-11, MW-12, MW-13, MW-14 and MW-15) were installed in March 2001. During the March 2001 sampling event, petroleum constituents were detected above the 2L standards in wells MW-1A, MW- 3, MW-8, MW-10 and MW-13 and LPH was measured in wells MW-1, MW-2 and MW-6. In January 2001, Shield collected an additional 20 soil samples at the site. Six of the samples (SB-14, SB-15, SB-16, SB-18, SB-19 and SB-22) contained petroleum constituents at concentrations above the Soil- to-Water MSCCs (Shield, 2001a). In July and August 2001, Shield installed five additional monitoring wells (MW-17, MW-18, MW-19, MW-20 and MW-21), a recovery well (RW-1), and a soil vapor extraction point (SVE-1). Well MW-18 did not produce water and was subsequently abandoned. Petroleum constituents were detected above the 2L standards in wells MW-1A, MW-3, MW-3A, MW-4A, and MW-7 through MW-16 during the September 2001 sampling event and benzene was detected above its GCL in well MW-10 (Shield, 2001b). Shield submitted a New Technology Clean-up Plan (NTCP) to the NCDEQ to address the remaining impacted soils located near wells MW-1A, MW-2 and MW-6, and the pump island located between wells MW-1 and MW-8 (Shield, 2013). The NTCP also recommended a DPE system be installed at the site to clean up the groundwater. The NTCP was approved by the NCDEQ in September 2013 and DPE wells (DPE-2, DPE-3, DPE-5 and DPE-6) were installed in January 2014. Soil vapor extraction point SVE-1 and recovery well RW-1 were converted to DPE-1 and DPE-4, respectively. The DPE system installation was completed and a Town of Mount Holly industrial discharge permit was obtained in January 2015. The remediation system was started on February 12, 2015 (Shield, 2016). Numerous groundwater sampling events were conducted at the site from 2000 to 2016. The results of the past sampling events are summarized in Table 3. Shield last sampled the monitoring wells in October 2016. The DPE remediation system was reportedly shut down and the Town of Mount Holly industrial discharge permit was rescinded in December 2016. No additional assessment activities were completed at the site by Shield. Triangle Texaco Mount Holly, North Carolina Project Number 71179050 Incident No. 21112 January 23, 2020 Responsive ■Resourceful ■Reliable 7 In September 2017, Terracon mobilized to the site to conduct groundwater sampling at wells MW-1, MW-1A, MW-2, MW-8 and MW-10. No free product was encountered during the sampling event. Benzene was detected above its GCL in monitoring well MW-1. Multiple petroleum constituents were detected in monitoring wells MW-1, MW-1A, MW-2 and MW-10 at concentrations exceeding their respective 2L standards. A sample was not obtained from well MW-8 due to a lack of access. According to previous reports, no water supply wells were identified within 1,500 feet of the site and surrounding properties are connected to municipal water. Constituent concentrations appeared to be increasing in wells MW-1, MW-1A and MW-10 while levels had decreased in well MW-2. Terracon recommended a restart of the remediation system and semi-annual sampling. Terracon mobilized to the site on April 12, 2018 to collect groundwater samples from monitoring wells MW-1, MW-1A, MW-2, MW-8 and MW-10. According to laboratory analytical results, various petroleum constituents were detected in the five sampled monitoring wells. Benzene exceeded its GCL in well MW-1 and was detected at concentrations above its 2L groundwater standard in wells MW-1A, MW-2, MW-8 and MW-10. The constituents detected above their respective 2L standards included toluene, ethylbenzene, isopropylbenzene, MTBE, 1,2-dichloroethane, naphthalene, 1,2,4- trimethylbenzene, 1,3,5-trimethylbenzene, n-propylbenzene, and total xylenes. Various other constituents were detected in the wells at concentrations below their respective 2L standards. No free product was encountered during the sampling event. Terracon mobilized to the site on October 30, 2018 to collect groundwater samples from monitoring wells MW-1, MW-1A, MW-2, MW-8 and MW-10. Prior to sample collection, Terracon gauged the groundwater levels. During the sampling event, depth to groundwater in the monitoring wells ranged from approximately 18.32 feet (well MW-1A) to 21.50 feet (well MW-8) bgs. Based on groundwater elevations, the flow direction was generally to the northeast. According to laboratory analytical results, various petroleum constituents were detected in the five monitoring wells. Benzene, ethylbenzene, isopropylbenzene, MTBE, n-propylbenzene, naphthalene, toluene, 1,2,4-trimethylbenzene, and total xylenes were detected in various wells at concentrations that exceed their respective 2L standards. Other petroleum constituents were detected in the wells at concentrations below their respective 2L standards. No free product was encountered during this sampling event. Terracon mobilized to the site on April 29, 2019 to collect groundwater samples from monitoring wells MW-1, MW-1A, MW-2, MW-8 and MW-10. Prior to sample collection, Terracon gauged the groundwater levels. During the sampling event, depth to groundwater in the monitoring wells ranged from approximately 20.83 feet (well MW-1) to 22.38 feet (well MW-1A) below ground surface (bgs). Based on groundwater elevations, the flow direction is generally to the northeast. According to laboratory analytical results, various petroleum constituents were detected in the five monitoring wells sampled during this event. Benzene was detected in well MW-1 at a concentration above its GCL standard. Benzene, bromodichloromethane, 1,2-dichloroethane, ethylbenzene, isopropylbenzene, MTBE, naphthalene, n-propylbenzene, toluene, 1,2,4-trimethylbenzene, 1,3,5- trimethylbenzene and total xylenes were detected in various well above their respective 2L standards. No free product was encountered during the sampling event. Triangle Texaco Mount Holly, North Carolina Project Number 71179050 Incident No. 21112 January 23, 2020 Responsive ■Resourceful ■Reliable 8 C.4 Water Supply Wells Based on previous receptor surveys conducted by Shield, water supply wells were not identified within 1,500 feet of the source area. The surrounding properties are reportedly connected to municipal water. C.5 Surface Water Dutchman’s Creek is located approximately 250 feet northeast and down-gradient of the site. Surface waters are depicted on Figure 1. C.6 Land Use Information The site is currently occupied by Gearheads Automotive. The adjoining property to the northwest along Woodlawn Avenue is occupied by a dry-cleaning facility. The adjoining property to the east, across North Main Street, is developed as a single-family residence. The adjoining property to the south, across Woodlawn Avenue and North Main Street is a vacant/undeveloped property. A property located farther to the south along North Main Street is developed as multi-family residential. The adjoining property to the north, across Dutchman’s Creek, is developed as a fire station. The site and surrounding properties are depicted in Figures 1 and 2. D. ASSESSMENT INFORMATION D.1 Site Geology and Hydrogeology The following resources were reviewed to evaluate site-specific geological and hydrogeological characteristics. Mount Holly, North Carolina, USGS 7.5-minute topographic map, dated 1993 (Figure 1). Geologic Map of North Carolina, dated 1985. The Geology of the Carolinas, Carolina Geological Society Fiftieth Anniversary Volume, edited by J. Wright Horton, Jr., and Victor A. Zullo, The University of Tennessee Press, dated 1991. Soil Survey of Gaston County, North Carolina, US Department of Agriculture, Natural Resources Conservation Service, Web Soil Survey via the Internet,http://websoilsurvey.nrcs.usda.gov/app/. The site is located within the Charlotte Belt of the Piedmont Physiographic Province. The Piedmont Physiographic Province generally consists of low to medium elevation, rounded hills and long rolling northeast to southwest trending ridges with incised creeks and river channels. Underlying bedrock in the site area consists of metamorphosed quartz diorite. In-place chemical and physical weathering of parent rocks typically form residual soils in the Piedmont region. Weathering is facilitated by the presence of fractures, joints, and less resistant Triangle Texaco Mount Holly, North Carolina Project Number 71179050 Incident No. 21112 January 23, 2020 Responsive ■Resourceful ■Reliable 9 minerals in the rock. In areas not altered by erosion, alluvial deposition or the activities of man, the typical residual soil profile consists of clay-rich unconsolidated materials at the surface, transitioning to sandy silts and silty sands at depth. Typically, the boundary between soil and rock is not sharply defined. This transitional zone is termed “partially weathered rock” or saprolite. Information obtained from the Web Soil Survey for Gaston County, depicts soils at the site as Cecil Urban Land (CfD) and Urban Land (Ur). In the Piedmont, groundwater generally occurs in pore spaces within soils and in the structural features present in the underlying rock (i.e. joints, fractures, and faults). Recharge to the water table is primarily by precipitation infiltrating the surficial soils and percolating downward under the influence of gravity to the water table (vadose zone). Typically, the water table is not a level surface, but a subdued reflection of the land surface. The depth to the water table is not consistent and is dependent upon several factors that include the amount of rainfall, permeability of the soil, the extent of fracturing in the underlying rock and the influences of groundwater pumping. Groundwater typically flows in directions parallel to the ground surface and under the influence of gravity, migrates to discharge points such as surface water features, the toes of slopes or natural springs. Fluctuations in the depth of the water table can be expected depending on variations in precipitation, surface water run-off and other factors not evident at the time of our subsurface exploration. Normally, the highest levels of the water table occur in late winter and spring and the lowest levels occur in the late summer and fall. Based on an interpreted groundwater flow direction from historical data, groundwater is expected to flow to the northeast from the site. D.2 Sampling Activities D.2.1 Free Product Evaluation Free product was not encountered at the site during this sampling event. D.2.2 Groundwater Sampling Activities Terracon mobilized to the site on November 19, 2019 to collect groundwater samples from monitoring wells MW-1, MW-1A, MW-2, MW-8 and MW-10. Prior to sample collection, Terracon gauged the groundwater levels and purged a minimum of three well volumes from the monitoring wells. During the sampling event, depth to groundwater in the monitoring wells ranged from approximately 22.87 feet (well MW-1) to 26.47 feet (well MW-10) below ground surface (bgs). Based on groundwater elevations, the flow direction is generally to the east-northeast. The wells were allowed to recharge a minimum of 90 percent of the original well volume before samples were collected for laboratory analysis. The approximate locations of the monitoring wells are shown on Figure 2. Copies of Terracon’s field notes are included in Appendix B. Current and historical groundwater depth measurements are provided in Table 2. The groundwater samples were placed in laboratory-supplied glassware, labeled and stored in an Triangle Texaco Mount Holly, North Carolina Project Number 71179050 Incident No. 21112 January 23, 2020 Responsive ■Resourceful ■Reliable 10 ice-packed cooler. The samples, along with chain-of-custody documentation, were delivered to Pace Analytical Services, LLC in Huntersville, North Carolina for analysis of VOCs by Standard Method 6200B, including MTBE, IPE and EDB. D.2.3 Analytical Results According to laboratory analytical results, various petroleum constituents were detected in the five monitoring wells sampled during this event. The following constituents were detected in well MW-1 at concentrations that exceed their respective 2L standards; benzene (3,010 micrograms per liter [µg/L]), ethylbenzene (2,470 µg/L), isopropylbenzene (98.2 µg/L), naphthalene (328 µg/L), n-propylbenzene (195 µg/L), toluene (6,860 µg/L), 1,2,4-trimethylbenzene (1,820 µg/L), 1,3,5-trimethylbenzene (560 µg/L) and total xylenes (13,960 µg/L). The following constituents were detected in well MW-1A at concentrations that exceed their respective 2L standards; benzene (2,910 µg/L), 1,2-dichloroethane (16 µg/L), MTBE (666 µg/L), naphthalene (73.6 µg/L) and total xylenes (642 µg/L). Benzene (39.5 µg/L), MTBE (88.0 µg/L), naphthalene (32.8 µg/L) and n-propylbenzene (88.9 µg/L) were detected in well MW-2 at concentrations that exceed their 2L standards. The following constituents were detected in well MW-8 at concentrations that exceed their respective 2L standards; benzene (3,620 µg/L), ethylbenzene (1,030 µg/L), naphthalene (458 µg/L), n- propylbenzene (89.8 µg/L) and total xylenes (2,375 µg/L). In well MW-10, benzene (136 µg/L) and MTBE (104 µg/L) were detected at concentrations that exceed their respective 2L standards. In addition, benzene and toluene concentrations exceed their respective 2B standards by more than a factor of 10 in monitoring wells MW-1, MW-1A and MW-8. Benzene and toluene concentrations also exceed their respective 2B standard in MW-10 but at levels less than 10 times the factor. Various other petroleum constituents were detected in the wells at concentrations below their respective 2L standards. The groundwater analytical results are summarized in Table 3. A copy of the laboratory analytical report is provided in Appendix A. D.3 Remediation System The on-site DPE system was reactivated by Terracon after an industrial discharge permit from the City of Mount Holly was obtained on February 15, 2018. Once power was turned on and system repairs were completed, Terracon re-started the DPE system on July 17, 2018. The industrial discharge permit requires effluent samples be collected on a quarterly basis.The remediation system did not operate 24-hours Triangle Texaco Mount Holly, North Carolina Project Number 71179050 Incident No. 21112 January 23, 2020 Responsive ■Resourceful ■Reliable 11 consecutively during July. It was down while awaiting parts to repair the worn stator and broken pin in the transfer pump. Once the parts were replaced, the system was turned on July 15, 2019, however, it only ran for a few hours before it went down again (possibly due to a malfunctioning ultra-sonic level indicator). Adjustments were made to the ultra-sonic level indicator and the system was restarted on multiple occasions during July through September. Composite samples were not collected during July 2019. On October 17, 2019, the ultra-sonic level indicator was repaired and reinstalled. The system has operated continuously since the system was restarted on October 17, 2019, with the exception of November 22 through 27 and December 1 through 12, 2019 when the system was likely down due to power outages. The most recent sampling event occurred on October 30, 2019. Analytical results indicated constituent concentrations were below the permit limits. The Industrial Discharge Monitoring Reports (IDMRs) have been submitted to the City of Mt. Holly on a monthly basis. Effluent and influent samples were collected from the DPE system on October 30, 2019. The samples are identified as Pipe 001C, Pipe 001G, and Influent. Pipe 001C was analyzed by various methods including BOD 5-day, TSS, ammonia, and metals by EPA Methods 6010D and 6020B. Pipe 001G was analyzed for VOCs by Standard Method 6200B, PCBs using Method 8082, oil and grease, cyanide, and pH. The influent sample was analyzed for VOCs by Standard Method 6200B. The analytical results indicated the concentrations were below the permit limits except for copper. An Industrial Discharge Monitoring Report – October 2018 (IDMR), dated November 19, 2018 was submitted to the City of Mt. Holly. A copy of the IDMR is included in Appendix D. E. CONCLUSIONS AND RECCOMENDATIONS Based on information obtained during the completion of these assessment activities, Terracon provides the following conclusions and findings. Free product was not encountered at the site during this sampling event. Benzene, 1,2-dichloroethane, ethylbenzene, isopropylbenzene, MTBE, naphthalene, n-propylbenzene, toluene, 1,2,4-trimethylbenzene, 1,3,5-trimethylbenznene, and total xylenes were detected in various wells at concentrations that exceed their respective 2L standards. Benzene and toluene concentrations exceed their respective 2B standards in wells MW-1, MW-1A, MW-8, and MW-10. Concentrations in wells MW-1, MW-1A and MW-8 exceed the 2B standard by more than a factor of 10. Since surface water is located within 500 feet of the site and groundwater contaminant concentrations exceed the applicable surface water quality standards and criteria found in 15A NCAC 2B .0200 and US EPA National Criteria by a factor of ten, the site is considered to be an intermediate risk. Other petroleum constituents were detected in the wells at concentrations below their respective 2L standards. The estimated groundwater flow direction at the site is to the northeast. Water supply wells have not been identified within 1,500 feet of the source area. According to previous Shield reports, the site and surrounding properties are connected to municipal water. Triangle Texaco Mount Holly, North Carolina Project Number 71179050 Incident No. 21112 January 23, 2020 Responsive ■Resourceful ■Reliable 12 Generally, constituent concentrations appear to be increasing in wells MW-1, MW-1A, and MW-8, and decreasing in MW-2 and MW-10 since the system was re-started. The DPE system at the site was reactivated on July 17th, 2019 once repairs were complete. The system was restarted multiple times from July 2019 through September 2019 due to a malfunctioning ultra-sonic indicator that was repaired on October 17th, 2019. The system has operated continuously since the system was restarted on October 17, 2019, with the exception of November 22 through 27 and December 1 through 12, 2019 when the system was likely down due to power outages. Effluent and influent samples have been collected monthly from the DPE system. The most recent sampling event was on October 30, 2019. Analytical results indicated all concentrations were below the permit limits. The IDMRs have been submitted to the City of Mt. Holly on a monthly basis. Based on the findings of our assessment and remediation activities, the following comments and recommendations are provided for the site. Terracon recommends continued operation of the on-site DPE remediation system based on the exceedance of the 2B standards by a factor of 10 in three of the on-site wells and proximity of the nearest surface water. Terracon also recommends the on-site wells be sampled on a semi-annual basis to monitor the results of the remediation system. FIGURES SITE LOCATION MAP Triangle Texaco (Incident # 21112) 201 North Main Street Mount Holly, NC TOPOGRAPHIC MAP IMAGE COURTESY OF THE U.S. GEOLOGICAL SURVEY QUADRANGLES INCLUDE: MOUNT HOLLY, NC (1/1/1993) and MOUNTAIN ISLAND LAKE, NC (1/1/1997). 2701 Westport Road Charlotte, NC 28208 71179050 Project Manager: Drawn by: Checked by: Approved by: TPO CLC CLC APPROXIMATE SITE BOUNDARY 1”=2,000’ 71179050.3 May 2019 Project No. Scale: File Name: Date: 1 Figure FJD 2 Figure DIAGRAM IS FOR GENERAL LOCATION ONLY, AND IS NOT INTENDED FOR CONSTRUCTION PURPOSES 2701 Westport Road Charlotte, NC Site PlanProject Manager: Drawn by: Checked by: Approved by: FJD Project No. File Name: Date: Scale: 71179050 TPO December 2019MNM MNM 71179050.3 Triangle Texaco (Incident #21112) 201 North Main Street Mount Holly, Gaston County, North Carolina denotes approximate site boundary denotes groundwater monitoring well. 1” = 35 ft. MW-5 MW-18 (Abandoned) Brick Building MW-11 MW-19 MW-21 MW-20 MW-12 MW-4A MW-3A DMW-1 MW-2 MW-6 RW-1/DPE-4 MW-10MW-8 MW-1 MW-2A MW-14 MW-9 MW-3 MW-13 MW-17 MW-7 MW-16 MW-4 (Destroyed) Wooded AreaAsphalt/Concrete Paved Grassed Metal Shed Metal Shed North Main StreetWoodlawn AvenueSystem Compound MW-1A DMW-2 MW-15 Former Pump Island denotes Dual Phase Extraction well DPE-2 DPE-6 DPE-3 SVE-1/DPE-1 DPE-5 RECEPTOR MAP 2701 Westport Road Charlotte, NC 28208 DIAGRAM IS FOR GENERAL LOCATION ONLY, AND IS NOT INTENDED FOR CONSTRUCTION PURPOSES 3 Figure 1,500 ft. Radius (from release location) 1,000 ft. Radius (from release location) 500 ft. Radius (from release location) Triangle Texaco (Incident #21112) 201 North Main Street Mount Holly, Gaston County, North Carolina Project Manager: Drawn by: Checked by: Approved by: FJD Project No. File Name: Date: Scale: 71179050 TPO May 2019CLC CLC 1” ~ 375’ 71179050.3 4 Figure DIAGRAM IS FOR GENERAL LOCATION ONLY, AND IS NOT INTENDED FOR CONSTRUCTION PURPOSES 2701 Westport Road Charlotte, NC Groundwater Elevation MapProject Manager: Drawn by: Checked by: Approved by: FJD Project No. File Name: Date: Scale: 71179050 TPO MNM MNM 71179050.3 Triangle Texaco (Incident #21112) 201 North Main Street Mount Holly, Gaston County, North Carolina denotes approximate site boundary denotes groundwater monitoring well. 1” = 35 ft. MW-5 MW-18 (Abandoned) Brick Building MW-11 MW-19 MW-21 MW-20 MW-12 MW-4A MW-3A DMW-1 MW-2 MW-6 RW-1/DPE-4 MW-10MW-8 MW-1 MW-2A MW-14 MW-9 MW-3 MW-13 MW-17 MW-7 MW-16 MW-4 (Destroyed) Wooded AreaAsphalt/Concrete Paved Metal Shed North Main StreetWoodlawn AvenueSystem Compound MW-1A DMW-2 MW-15 571.95’ 572.08’ 571.59’ 577.5’ estimated groundwater flow direction estimated groundwater elevation contour denotes Dual Phase Extraction well DPE-2 SVE-1/DPE-1 DPE-3 DPE-5 DPE-6 Former Pump Island 576.33’ 576’ 572’ 577’571.5’ December 2019 5 Figure DIAGRAM IS FOR GENERAL LOCATION ONLY, AND IS NOT INTENDED FOR CONSTRUCTION PURPOSES 2701 Westport Road Charlotte, NC Groundwater Analytical ResultsProject Manager: Drawn by: Checked by: Approved by: FJD Project No. File Name: Date: Scale: 71179050 VML December 2019MNM MNM 71179050.3 Triangle Texaco (Incident #21112) 201 North Main Street Mount Holly, Gaston County, North Carolina 1” = 35 ft. MW-5 MW-18 (Abandoned) Brick Building MW-11 MW-19 MW-21 MW-20 MW-12 MW-4A MW-3A DMW-1 MW-2 MW-6 RW-1 MW-10MW-8 MW-1 MW-2A MW-14 MW-9 MW-3 MW-13 MW-17 MW-7 MW-16 MW-4 (Destroyed) Wooded AreaAsphalt/Concrete Paved Grassed Metal Shed North Main StreetWoodlawn AvenueSystem Compound MW-1ADMW-2 MW-15 Sample ID: MW-1 Groundwater Sample 6200 –Benzene: 3,010 µg/L Ethylbenzene: 2,470 µg/L Isopropylbenzene: 98.2 µg/L Naphthalene: 328 µg/L n-Propylbenzene: 195 µg/L Toluene: 6,860 µg/L 1,2,4-Trimethylbenzene: 1,820 µg/L 1,3,5-Trimethylbenzene: 560 µg/L Total Xylenes: 13,960 µg/L *Values above 2L Standards are in bold. Sample ID: MW-1AGroundwater Sample6200 –Benzene: 2,910 µg/L1,2-Dichloroethane: 16 µg/LEthylbenzene: 87.5 µg/LIsopropylbenzene: 51.9 µg/LMTBE: 666 µg/LNaphthalene: 73.6 µg/Ln-Propylbenzene: 33.2 µg/L1,2,4-Trimethylbenzene: 52.1 µg/L1,3,5-Trimethylbenzene: 37.9 µg/LToluene: 177 µg/LTotal Xylenes: 642 µg/L *Values above 2L Standards are in bold. Sample ID: MW-2 Groundwater Sample 6200 –Benzene: 39.5 µg/L Toluene: 6.9 µg/L Ethylbenzene: 50.8 µg/L Total Xylenes: 79.3 µg/L MTBE: 88.0 µg/L Isopropylbenzene: 34.9 µg/L Naphthalene: 32.8 µg/L n-Propylbenzene: 88.9 µg/L 1,2,4-Trimethylbenzene: 394 µg/L 1,3,5-Trimethylbenzene: 154 µg/L *Values above 2L Standards are in bold. Sample ID: MW-10 Groundwater Sample 6200 –Benzene: 136 µg/L Toluene: 15 µg/L Ethylbenzene: 123 µg/L Total Xylenes: 184.6 µg/L MTBE: 104 µg/L Isopropylbenzene: 12.0 µg/L Naphthalene: 35.8 µg/L n-Propylbenzene: 19.6 µg/L 1,2,4-Trimethylbenzene: 23.1 µg/L 1,3,5-Trimethylbenzene: 15.9 µg/L *Values above 2L Standards are in bold. Sample ID: MW-8Groundwater Sample6200 –Benzene: 3,620 µg/L Toluene: 441 µg/L Ethylbenzene: 1,030µg/LTotal Xylenes: 2,375 µg/L n-Propylbenzene: 89.8 µg/L Isopropylbenzene: 67.4 µg/L Naphthalene: 458 µg/L 1,2,4-Trimethylbenzene: 443 µg/L 1,3,5-Trimethylbenzene: 130 µg/L *Values above 2L Standards are in bold. TABLES TABLE 1 Historical UST Information Triangle Texaco Mount Holly, North Carolina Terracon Project No. 71179050 NCDEQ Incident No. 21112 Contents Capacity (gallons) Date Installed Date Closed Closed/Active Release from System Gasoline 6,000 1971 12/9/1999 Closed Yes TABLE 2 Monitoring Well Construction Informationand Historical Groundwater Elevations Triangle Texaco 201 North Main Street Mount Holly, North Carolina Terracon Project No. 71179050 NCDEQ Incident No. 21112 Well Id Date Installed (mm/dd/yy) Date Water Level Measured (mm/dd/yy) Well Casing Diameter (in.) Depth of Well (ft-TOC) Top of Casing Elevation (ft.) Depth to Water from Top of Casing (ft.) Groundwater Elevation (ft.) Comments 9/5/2001 24.54 575.831/13/2003 23.18 577.19 5/21/2012 22.79 577.58 11/12/2014 23.11 577.262/10/2015 23.71 576.669/20/2017 20.89 579.484/12/2018 20.80 579.5710/30/2018 20.28 580.094/29/2019 20.83 579.5411/19/2019 22.87 577.509/5/2001 22.39 575.011/13/2003 20.86 576.545/21/2012 20.43 576.9711/12/2014 20.82 576.582/10/2015 25.65 571.7510/5/2015 27.03 570.374/21/2016 24.67 572.7310/19/2016 20.08 577.329/20/2017 18.93 578.474/12/2018 18.82 578.5810/30/2018 18.32 579.084/29/2019 22.38 575.0211/19/2019 25.32 572.089/5/2001 22.55 574.521/13/2003 20.98 576.09 5/21/2012 20.61 576.4611/12/2014 20.89 576.18 2/10/2015 24.87 572.20 10/5/2015 26.46 570.614/21/2016 24.70 572.37 10/19/2016 20.47 576.609/20/2017 19.75 577.32 4/12/2018 19.25 577.82 10/30/2018 18.40 578.674/29/2019 21.62 575.45 11/19/2019 25.48 571.599/5/2001 23.48 576.13 1/13/2003 21.69 577.92 5/21/2012 21.44 578.1711/12/2014 21.70 577.91 2/10/2015 22.14 577.479/5/2001 13.06 575.091/13/2003 11.57 576.585/21/2012 11.43 576.7211/12/2014 NM NM 2/10/2015 NM NM9/5/2001 21.15 574.371/13/2003 19.55 575.97 5/21/2012 19.22 576.3011/12/2014 19.91 575.61 2/10/2015 21.28 574.24 10/5/2015 23.60 571.924/21/2016 21.69 573.83 10/19/2016 19.30 576.229/5/2001 22.37 570.23 1/13/2003 20.94 571.66 5/21/2012 20.84 571.7611/12/2014 21.62 570.98 2/10/2015 22.71 569.8910/5/2015 22.66 569.94 4/21/2016 22.00 570.60 10/19/2016 21.91 570.699/5/2001 13.19 569.84 1/13/2003 11.98 571.055/21/2012 NM NM 11/12/2014 NM NM 2/10/2015 NM NM9/5/2001 23.28 574.04 1/13/2003 21.30 576.025/21/2012 20.91 576.41 11/12/2014 21.22 576.10 2/10/2015 24.43 572.8910/5/2015 26.66 570.66 4/21/2016 24.56 572.7610/19/2016 20.72 576.60 9/5/2001 11.66 575.56 1/13/2003 11.11 576.115/21/2012 11.02 576.20 11/12/2014 11.36 575.862/10/2015 10.99 576.23 9/5/2001 25.49 575.39 1/13/2003 23.94 576.945/21/2012 23.62 577.26 11/12/2014 24.11 576.772/10/2015 25.21 575.67 10/5/2015 26.14 574.74 4/21/2016 24.60 576.2810/19/2016 23.91 576.97 9/20/2017 NM NM4/12/2018 22.13 578.75 10/30/2018 21.50 579.38 4/29/2019 22.35 578.5311/19/2019 24.55 576.33 9/5/2001 13.56 575.351/13/2003 12.10 576.81 5/21/2012 11.72 577.19 11/12/2014 12.29 576.622/10/2015 12.91 576.00 9/5/2001 23.52 574.901/13/2003 22.09 576.33 5/21/2012 21.77 576.65 11/12/2014 22.08 576.342/10/2015 26.89 571.53 10/5/2015 26.55 571.874/21/2016 24.64 573.78 10/19/2016 21.48 576.94 9/20/2017 20.42 578.004/12/2018 20.32 578.10 10/30/2018 19.69 578.734/29/2019 21.90 576.52 11/19/2019 26.47 571.95 MW-4A NA 2 MW-6 NA 2 NAMW-5 2 2MW-3 588.1523.11 30.74 NAMW-3A 2 27.79 597.32 LPH was measured at a thickness of 0.57 ft on 9/5/01 595.5229.13 592.6 583.03NA 29.9 588.91MW-9 NA 2 19.95 MW-10 NA 2 34.84 598.42 MW-1 NA 2 36.75 600.37 LPH was measured at a thickness of 0.22 ft on 1/13/03 MW-1A NA 2 33 597.4 LPH was measured at a thickness of 0.16 ft on 9/5/01, 0.14 ft on 1/13/03, and 0.02 ft on 5/21/12. MW-2 NA 2 34.56 597.07 MW-8 NA 2 41.61 600.88 MW-8 was not measured/sampled on 9/20/17 due to a vehicle being parked on it and the tenant did not have the keys to the vehicle. 599.61 NA NAMW-2A 2 587.22MW-7 NA 2 18.72 TABLE 2 Monitoring Well Construction Informationand Historical Groundwater Elevations Triangle Texaco 201 North Main Street Mount Holly, North Carolina Terracon Project No. 71179050 NCDEQ Incident No. 21112 Well Id Date Installed (mm/dd/yy) Date Water Level Measured (mm/dd/yy) Well Casing Diameter (in.) Depth of Well (ft-TOC) Top of Casing Elevation (ft.) Depth to Water from Top of Casing (ft.) Groundwater Elevation (ft.) Comments 9/5/2001 15.17 570.10 1/13/2003 13.63 571.645/21/2012 13.55 571.7211/12/2014 14.60 570.67 2/10/2015 13.16 572.119/5/2001 14.39 569.08 1/13/2003 12.98 570.495/21/2012 12.09 571.3811/12/2014 13.53 569.94 2/10/2015 10.73 572.7410/5/2015 11.08 572.39 4/21/2016 14.37 569.1010/19/2016 13.64 569.839/5/2001 13.45 574.62 1/13/2003 12.05 576.025/21/2012 11.84 576.23 11/12/2014 12.39 575.682/10/2015 13.14 574.939/5/2001 12.83 575.87 1/13/2003 7.30 581.405/21/2012 11.03 577.67 11/12/2014 11.43 577.272/10/2015 11.71 576.999/5/2001 26.25 576.46 1/13/2003 24.59 578.125/21/2012 24.34 578.37 11/12/2014 24.64 578.072/10/2015 24.64 578.079/5/2001 9.64 572.18 1/13/2003 8.37 573.455/21/2012 8.40 573.42 11/12/2014 9.98 571.842/10/2015 8.41 573.419/5/2001 10.68 574.37 1/13/2003 9.44 575.615/21/2012 9.21 575.84 11/12/2014 9.88 575.172/10/2015 9.05 576.009/5/2001 28.53 568.77 1/13/2003 NM NM5/21/2012 NM NM 11/12/2014 NM NM2/10/2015 NM NM9/5/2001 10.51 569.54 1/13/2003 8.95 571.105/21/2012 8.31 571.74 11/12/2014 9.85 570.202/10/2015 8.45 571.609/5/2001 10.42 569.57 1/13/2003 9.18 570.815/21/2012 8.80 571.19 11/12/2014 9.76 570.232/10/2015 8.80 571.1910/5/2015 9.95 570.04 4/21/2016 10.07 569.9210/19/2016 10.25 569.74 9/5/2001 21.18 574.331/13/2003 19.60 575.915/21/2012 19.35 576.16 11/12/2014 19.97 575.542/10/2015 21.40 574.11 9/5/2001 22.58 575.071/13/2003 21.70 575.955/21/2012 20.69 576.96 11/12/2014 21.17 576.482/10/2015 24.67 572.98 5/21/2012 22.94 577.0911/12/2014 22.39 577.642/10/2015 24.54 575.49 10/5/2015 23.62 576.414/21/2016 21.12 578.91 10/19/2016 20.88 579.1511/12/2014 20.51 576.452/10/2015 22.17 574.79 11/12/2014 20.16 576.592/10/2015 30.74 566.01 10/5/2015 32.50 564.254/21/2016 28.47 568.2810/19/2016 19.92 576.83 5/21/2012 20.25 576.4711/12/2014 20.36 576.36 2/10/2015 20.91 575.814/21/2016 24.14 572.5810/19/2016 19.76 576.96 11/12/2014 17.99 574.602/10/2015 18.68 573.91 10/5/2015 33.19 559.404/21/2016 21.91 570.6811/12/2014 13.58 570.43 2/10/2015 13.79 570.224/21/2016 18.24 565.77 Notes: Depth of Well and Top of Casing elevation taken from Active Remediation Monitoring Report, Triangle Texaco dated November 11, 2016 by Shield Engineering, Inc.Top of casing elevations are relative to mean sea level. DPE-6 NA 2 35.78 584.01 596.72 DPE-5 NA 2 44.32 592.59 DPE-4 (RW-1)NA 2 49.38 585.27 MW-12 NA 2 17.86 583.47 MW-11 NA 2 27.23 588.07 MW-14 NA 2 19.88 588.70 MW-13 NA 2 19.18 602.71 MW-16 NA 2 19.64 581.82 MW-15 NA 2 33.5 585.05MW-17 NA 2 18.48 597.30 MW-20 NA 2 19.25 580.05 MW-19 NA 2 NA 579.99 DMW-1 NA 2 70.17 595.51 MW-21 NA 2 19.1 597.65 DPE-1 (SVE-1)NA 2 25.96 600.03 LPH was measured at a thickness of 0.01 ft on 11/12/14 DMW-2 NA 2 60.17 596.96 DPE-3 NA 2 43.95 596.75 DPE-2 NA 2 44.25 TABLE 3 Summary of Groundwater Analytical Results Triangle Texaco 201 North Main Street Mount Holly, North Carolina Terracon Project No. 71179050 NCDEQ Incident No. 21112 Contaminant of Concern → Well/Sample I.D. Date Collected (mm/dd/yy) 3/1/2000 12/21/2000 3/11/2001 1/13/2003 5/22/2012 5,940 NL ND NR NL 54.2 2,000 NL 784 249 NL 9,780 NL NL ND 10,110 11/13/2014 6,060 NL ND ND NL ND 2,230 NL 432 330 NL 9,240 NL NL ND 11,750 2/11/2015 4,580 NL ND ND NL ND 1,240 NL 178 231 NL 3,470 NL NL ND 5,670 9/20/2017 9,030 ND ND ND 39.1J 39.6J 2,780 115 124 383 224 9,830 1,590 ND ND 15,360 4/12/2018 5,320 <12.5 <12.5 <12.5 15.2J 19.1J 2,490 106 13.5J 363 226 9,210 2,050 560 <12.5 16,770 10/30/2018 6,700 <12.5 <12.5 <12.5 <12.5 13.8J 2,400 102 <12.5 561 <12.5 5,400 2,040 <12.5 <12.5 15,590 4/29/2019 8,970 12.6J <12.5 <12.5 14.4J <12.5 2,150 114 <12.5 449 190 4,310 1,400 403 <12.5 9,370 11/19/2019 3,010 <9.2 <12.3 <11.6 <12.0 <16.7 2,470 98.2 <22.2 328 195 6,860 1,820 560 <13.6 13,960 3/1/2000 3,500 NL ND 44*NL 120 860 NL 1,900 NA NL 1,300 NL NL ND 5,500 12/21/2000 5,500 NL ND 7.5 NL 140 250 NL 3,000 NA NL 480 NL NL ND 1,880 3/11/2001 4,300 NL ND ND NL ND 320 NL 2,100 NA NL 510 NL NL ND 2,010 9/6/2001 1/13/2003 5/22/2012 697 NL ND ND NL ND 414 NL 67.2 273 NL 92.2 NL NL ND 1,882 11/13/2014 887 NL ND ND NL ND 298 NL ND 156 NL 84.2 NL NL ND 1,139 2/11/2015 876 NL ND ND NL ND 31.2 NL 151 16.4 NL 32.1 NL NL ND 285 10/5/2015 878 NL ND ND NL ND 35.9 NL 355 36.7 NL 191 NL NL ND 287 4/21/2016 1,240 NL ND ND NL ND 41.2 NL 337 38.2 NL 183 NL NL ND 323 10/19/2016 1,170 NL ND ND NL ND 24.8 NL 577 26.7 NL 54.3 NL NL ND 134 9/20/2017 1,980 ND ND ND 3.9J ND 71.5 52.5 981 71.7 28.7 66.6 134 58.7 ND 497 4/12/2018 2,290 <3.1 <3.1 <3.1 6.7 <3.1 72.5 69 719 61.8 46.8 93.1 122 59 <3.1 536 10/30/2018 1,720 <3.1 <3.1 <3.1 <3.1 <3.1 114 48.2 244 85.2 <3.1 79.7 189 <3.1 <3.1 790 4/29/2019 4,540 <10.0 <10.0 <10.0 23.4 16.6J 120 70.3 875 146 58.7 284 100 58.2 <10.0 800 11/19/2019 2,910 <4.6 <6.2 <5.8 16 <8.4 87.5 51.9 666 73.6 33.2 177 52.1 37.9 <6.8 642 5/15/2000 4,400 ND 0.43*NL ND 1,500 NL 6,400 NA NL 740 NL NL ND 2,230 3/11/2001 9/6/2001 1/13/2003 4,480 NL ND NR NL ND 5,980 NL 4,770 NA NL 3,590 NL NL ND 24,000 5/22/2012 2,340 NL ND ND NL ND 2,440 NL 95.9 657 NL 195 NL NL ND 5,656 11/13/2014 1,600 NL ND ND NL ND 2,290 NL 44.8 798 NL 185 NL NL ND 5,477 2/11/2015 906 NL ND ND NL ND 1,810 NL 211 698 NL 158 NL NL ND 4,179 10/5/2015 316 NL ND ND NL ND 813 NL 1,250 283 NL 68 NL NL ND 1,426 4/21/2016 56 NL ND ND NL ND 390 NL 81.2 199 NL 24 NL NL ND 1,016 10/19/2016 49.3 NL ND ND NL ND 310 NL 293 141 NL 10.9 NL NL ND 615 9/20/2017 7.4 ND ND ND ND ND 250 93.9 24.8 132 220 5.8 1,110 395 ND 563.9 4/12/2018 6.5 <1.0 9.0 <1.0 1.0J <1.0 105 34.4 24 37.8 88.7 11 431 178 6.1 148.5 10/30/2018 1.6 <0.50 <0.50 <0.50 <0.50 <0.50 47.2 18.7 15.0 13.4 47.9 0.75J 218 84.8 2.2 37.2 4/29/2019 77.1 <1.0 <1.0 <1.0 <1.0 <1.0 146 52.5 224 58.1 127 10.6 599 232 <1.0 201.3 11/19/2019 39.5 <0.74 <0.98 <0.92 <0.98 <1.3 50.8 34.9 88.0 32.8 88.9 6.9 394 154 3.2 79.3 4/27/2000 ND NL ND NR NL ND ND NL ND NA NL ND NL NL ND ND 12/21/2000 ND NL ND NR NL ND ND NL ND NA NL ND NL NL ND ND 3/11/2001 ND NL ND ND NL ND ND NL ND NA NL ND NL NL ND ND 9/6/2001 NR NL ND NR NL NR NR NL NR NA NL NR NL NL ND NR 1/13/2003 ND NL ND NR NL ND ND NL ND NA NL ND NL NL ND ND 5/22/2012 ND NL ND ND NL ND ND NL ND ND NL ND NL NL ND ND 11/13/2014 ND NL ND ND NL ND ND NL ND 4 NL ND NL NL ND ND 2/11/2015 ND NL ND ND NL ND ND NL ND ND NL ND NL NL ND ND 12/21/2000 ND NL ND NR NL 33 ND NL 650 NA NL ND NL NL ND ND 3/11/2001 ND NL ND ND NL ND ND NL 690 NA NL ND NL NL ND ND 9/6/2001 NR NL ND NR NL NR NR NL NR NA NL NR NL NL ND NR 1/13/2003 ND NL ND NR NL 11.6 ND NL 484 NA NL ND NL NL ND ND 5/22/2012 ND NL ND ND NL ND ND NL 5.7 ND NL ND NL NL ND ND 11/13/2014 Unable to Locate Well NaphthaleneMTBEEthylbenzeneEDBMW-2A MW-3 Analytical Method Benzene1,2,4-Trimethylbenzene1,3,5-TrimethylbenzneIsopropylbenzene6200B 1,2,3-TrichloropropaneBromodichloromethaneTotalXyleneessec-ButylbenzeneDiisopropylEther(IPE)Toluenen-Propylbenzene1,2-DichloroethaneLPH LPH LPH MW-1 MW-1A MW-2 LPH LPH LPH LPH NA TABLE 3 Summary of Groundwater Analytical Results Triangle Texaco 201 North Main Street Mount Holly, North Carolina Terracon Project No. 71179050 NCDEQ Incident No. 21112 Contaminant of Concern → Well/Sample I.D. Date Collected (mm/dd/yy)NaphthaleneMTBEEthylbenzeneEDBAnalytical Method Benzene1,2,4-Trimethylbenzene1,3,5-TrimethylbenzneIsopropylbenzene6200B 1,2,3-TrichloropropaneBromodichloromethaneTotalXyleneessec-ButylbenzeneDiisopropylEther(IPE)Toluenen-Propylbenzene1,2-Dichloroethane4/27/2000 ND NL ND ND NL ND ND NL ND ND NL ND NL NL ND ND 12/21/2000 ND NL ND ND NL ND ND NL ND ND NL ND NL NL ND ND 3/11/2001 ND NL ND ND NL ND ND NL ND ND NL ND NL NL ND ND 9/6/2001 NR NL ND NR NL NR NR NL NR NR NL NR NL NL ND NR 1/13/2003 ND NL ND ND NL ND ND NL 1.9 ND NL ND NL NL ND ND 5/22/2012 ND NL ND ND NL ND ND NL ND ND NL ND NL NL ND ND 11/13/2014 ND NL ND ND NL ND ND NL ND ND NL ND NL NL ND ND 2/11/2015 ND NL ND ND NL ND ND NL ND ND NL ND NL NL ND ND 10/5/2015 ND NL ND ND NL ND ND NL ND ND NL ND NL NL ND ND 4/21/2016 ND NL ND ND NL ND ND NL ND ND NL ND NL NL ND ND 10/19/2016 ND NL ND ND NL ND ND NL ND ND NL ND NL NL ND ND 3/11/2001 ND NL ND NR NL ND ND NL 4.9 NA NL ND NL NL ND ND 9/6/2001 NR NL ND NR NL NR NR NL NR NA NL NR NL NL ND NR 1/13/2003 ND NL ND NR NL ND ND NL 8.5 NA NL ND NL NL ND ND 5/22/2012 ND NL ND ND NL ND ND NL 2.2 ND NL ND NL NL ND ND 11/13/2014 ND NL ND ND NL ND ND NL 10.4 ND NL ND NL NL ND ND 2/11/2015 ND NL ND ND NL ND ND NL 39.5 ND NL ND NL NL ND ND 10/5/2015 ND NL ND ND NL ND ND NL 34 ND NL ND NL NL ND ND 4/21/2016 ND NL ND ND NL ND ND NL 4.5 ND NL ND NL NL ND ND 10/19/2016 ND NL ND ND NL ND ND NL 2.8 ND NL ND NL NL ND ND 12/21/2000 ND NL ND NR NL ND ND NL ND NA NL ND NL NL ND ND 3/11/2001 ND NL ND ND NL ND ND NL ND NA NL ND NL NL ND ND 9/6/2001 NR NL ND NR NL NR NR NL NR NA NL NR NL NL ND NR 1/13/2003 ND NL ND NR NL ND ND NL ND NA NL ND NL NL ND ND 5/22/2012 3/1/2000 3/11/2001 9/6/2001 1/13/2003 2,120 NL ND NR NL ND 2,730 NL 3,740 NA NL 4,750 NL NL ND 14,000 5/22/2012 303 NL ND ND NL ND 1,060 NL ND 469 NL 24.1 NL NL ND 1,940 11/13/2014 242 NL ND ND NL ND 1,580 NL ND 609 NL 40.4 NL NL ND 2,599 2/11/2015 255 NL ND ND NL ND 1,320 NL ND 402 NL 40.7 NL NL ND 2,159 10/5/2015 57.3 NL ND ND NL ND 281 NL ND 244 NL ND NL NL ND 225.7 4/21/2016 2.2 NL ND ND NL ND 14.3 NL ND 4 NL 0.6 NL NL ND 13.7 10/19/2016 ND NL ND ND NL ND ND NL ND ND NL ND NL NL ND ND 12/21/2000 ND NL ND ND NL ND ND NL ND NA NL ND NL NL ND ND 3/11/2001 ND NL ND ND NL ND ND NL ND NA NL ND NL NL ND ND 9/6/2001 NR NL ND NR NL NR NR NL NR NA NL NR NL NL ND NR 1/13/2003 ND NL ND ND NL ND ND NL ND NA NL ND NL NL ND ND 5/22/2012 ND NL ND ND NL ND ND NL ND ND NL ND NL NL ND ND 11/13/2014 ND NL ND ND NL ND ND NL ND ND NL ND NL NL ND ND 2/11/2015 ND NL ND ND NL ND ND NL ND ND NL ND NL NL ND ND 12/21/2000 1,900 NL ND ND NL 75 450 NL 340 NA NL 330 NL NL ND 1,470 3/11/2001 3,800 NL ND ND NL 210 1,500 NL 4,200 NA NL 3,600 NL NL ND 6,600 9/6/2001 NR NL ND NR NL NR NR NL NR NA NL NR NL NL ND NR 1/13/2003 2,610 NL ND NR NL ND 1,940 NL 1,650 NA NL 1,570 NL NL ND 9,060 5/22/2012 1,540 NL ND ND NL ND 1,140 NL 138 381 NL 450 NL NL ND 3,782 11/13/2014 1,780 NL ND ND NL ND 1,060 NL 90.1 342 NL 374 NL NL ND 3,358 2/11/2015 1,680 NL ND ND NL ND 1,100 NL 92 383 NL 471 NL NL ND 3,657 10/5/2015 1,730 NL ND ND NL ND 482 NL 42.5 196 NL 205 NL NL ND 1,300 4/21/2016 2,070 NL ND ND NL ND 503 NL ND 200 NL 276 NL NL ND 1,497 10/19/2016 3,230 NL ND ND NL ND 679 NL 48.4 291 NL 391 NL NL ND 2,062 9/20/2017 4/12/2018 2,480 <5.0 <5.0 <5.0 6.9J <5.0 1,030 71.6 33.1 382 114 238 741 114 <5.0 2,484 10/30/2018 3,710 <5.0 <5.0 <5.0 <5.0 <5.0 848 59.4 24.3 342 79.0 292 270 <5.0 <5.0 1,330.7 4/29/2019 3,570 <5.0 <5.0 <5.0 <5.0 <5.0 941 76.4 15.4 387 105 342 495 159 <5.0 1,949 11/19/2019 3,620 <3.7 <4.9 <4.6 <4.9 <6.7 1,030 67.4 <8.9 458 89.8 441 443 130 <4.5 2,375 MW-8 Well Not Sampled - Vehicle Parked on Well MW-4A MW-3A MW-5 MW-6 MW-7 Unable to Locate Well LPH LPH LPH TABLE 3 Summary of Groundwater Analytical Results Triangle Texaco 201 North Main Street Mount Holly, North Carolina Terracon Project No. 71179050 NCDEQ Incident No. 21112 Contaminant of Concern → Well/Sample I.D. Date Collected (mm/dd/yy)NaphthaleneMTBEEthylbenzeneEDBAnalytical Method Benzene1,2,4-Trimethylbenzene1,3,5-TrimethylbenzneIsopropylbenzene6200B 1,2,3-TrichloropropaneBromodichloromethaneTotalXyleneessec-ButylbenzeneDiisopropylEther(IPE)Toluenen-Propylbenzene1,2-Dichloroethane12/21/2000 15 ND ND ND NL 24 3.4 NL 490 NA NL 2.4 NL NL ND 8 3/11/2001 ND ND ND ND NL ND ND NL 29 NA NL ND NL NL ND ND 9/6/2001 NR NR ND NR NL NR NR NL NR NA NL NR NL NL ND NR 1/13/2003 ND ND ND NR NL ND ND NL 6.8 NA NL ND NL NL ND ND 5/22/2012 ND ND ND ND NL ND ND NL ND ND NL ND NL NL ND ND 11/13/2014 ND ND ND ND NL ND ND NL ND ND NL ND NL NL ND ND 2/11/2015 ND ND ND ND NL ND ND NL ND ND NL ND NL NL ND ND 12/21/2000 7,800 NL ND 0.061*NL ND 2,200 NL 27,000 NA NL 3,800 NL NL ND 7,000 3/11/2001 6,100 NL ND ND NL ND 2,000 NL 21,000 NA NL 2,200 NL NL ND 5,600 9/6/2001 NR NL ND NR NL NR NR NL NR NA NL NR NL NL ND NR 1/13/2003 5,380 NL ND NR NL ND 2,540 NL 31,000 NA NL 4,830 NL NL ND 10,700 5/22/2012 4,700 NL ND ND NL ND 2,080 NL 6,530 286 NL 1,980 NL NL ND 6,381 11/13/2014 3,580 NL ND ND NL ND 1,980 NL 2,270 306 NL 2,410 NL NL ND 7,060 2/11/2015 1,810 NL ND ND NL ND 1,420 NL 5,740 169 NL 444 NL NL ND 3,591 10/5/2015 998 NL ND ND NL 8.3 763 NL 1,640 92.1 NL 569 NL NL ND 1,644 4/21/2016 18.2 NL ND ND NL ND 23.8 NL 207 ND NL 3 NL NL ND 50.7 10/19/2016 290 NL ND ND NL 2.2 292 NL 178 44.1 NL 53.6 NL NL ND 412 9/20/2017 1,520 ND ND ND 4.9J ND 1,160 64.5 1,050 185 107 226 536 169 ND 3,350 4/12/2018 1,070 <3.1 <3.1 <3.1 4.2J 6.4 1,380 85.1 592 270 159 110 771 240 <3.1 3,711.3 10/30/2018 1,360 <3.1 <3.1 <3.1 <3.1 <3.1 1,250 79.3 845 245 <3.1 101 290 <3.1 <3.1 1952.5 4/29/2019 341 <1.2 <1.2 <1.2 1.5J <1.2 781 55.7 185 173 93.6 111 390 145 <1.2 2,046 11/19/2019 136 <0.46 <0.62 <0.58 <0.61 <0.84 123 12.0 104 35.8 19.6 15.0 23.1 15.9 <0.68 184.6 3/11/2001 ND ND ND ND NL ND ND NL ND NA NL ND NL NL ND ND 9/6/2001 NR NR ND NR NL NR NR NL NR NA NL NR NL NL ND NR 1/13/2003 ND ND ND NR NL ND ND NL ND NA NL ND NL NL ND ND 5/22/2012 ND ND ND ND NL ND ND NL ND ND NL ND NL NL ND ND 11/13/2014 ND ND ND ND NL ND ND NL ND ND NL ND NL NL ND ND 2/11/2015 ND ND ND ND NL ND ND NL ND ND NL ND NL NL ND ND 3/11/2001 ND ND ND ND NL ND ND NL ND NA NL ND NL NL ND ND 9/6/2001 NR NR ND NR NL NR NR NL NR NA NL NR NL NL ND NR 1/13/2003 ND ND ND NR NL ND ND NL ND NA NL ND NL NL ND ND 5/22/2012 ND ND ND ND NL ND ND NL ND ND NL ND NL NL ND ND 11/13/2014 ND ND ND ND NL ND ND NL ND ND NL ND NL NL ND ND 2/11/2015 ND ND ND ND NL ND ND NL ND ND NL ND NL NL ND ND 10/5/2015 ND ND ND ND NL ND ND NL ND ND NL ND NL NL ND ND 4/21/2016 ND ND ND ND NL ND ND NL ND ND NL ND NL NL ND ND 10/19/2016 ND ND ND ND NL ND ND NL ND ND NL ND NL NL ND ND 3/11/2001 ND ND ND ND NL 13 ND NL 460 NA NL ND NL NL ND ND 9/6/2001 NR NR ND NR NL NR NR NL NR NA NL NR NL NL ND NR 1/13/2003 ND ND ND NR NL 19.3 ND NL 668 NA NL ND NL NL ND ND 5/22/2012 ND ND ND ND NL ND ND NL 8.8 ND NL ND NL NL ND ND 11/13/2014 ND ND ND ND NL ND ND NL 3.9 ND NL ND NL NL ND ND 2/11/2015 ND ND ND ND NL ND ND NL 3.1 ND NL ND NL NL ND ND 3/11/2001 ND ND ND ND NL ND ND NL ND NA NL ND NL NL ND ND 9/6/2001 NR NR ND NR NL NR NR NL NR NA NL NR NL NL ND NR 1/13/2003 ND ND ND NR NL ND ND NL ND NA NL ND NL NL ND ND 5/22/2012 ND ND ND ND NL ND ND NL ND ND NL ND NL NL ND ND 11/13/2014 ND ND ND ND NL ND ND NL ND ND NL ND NL NL ND ND 2/11/2015 ND ND ND ND NL ND ND NL ND ND NL ND NL NL ND ND 3/11/2001 ND ND ND ND NL ND ND NL ND NA NL ND NL NL ND ND 9/6/2001 NR NR ND NR NL NR NR NL NR NA NL NR NL NL ND NR 1/13/2003 ND ND ND NR NL ND ND NL ND NA NL ND NL NL ND ND 5/22/2012 ND ND ND ND NL ND ND NL ND ND NL ND NL NL ND ND 11/13/2014 ND ND ND ND NL ND ND NL ND ND NL ND NL NL ND ND 2/11/2015 ND ND ND ND NL ND ND NL ND ND NL ND NL NL ND ND MW-9 MW-11 MW-12 MW-13 MW-14 MW-10 MW-15 TABLE 3 Summary of Groundwater Analytical Results Triangle Texaco 201 North Main Street Mount Holly, North Carolina Terracon Project No. 71179050 NCDEQ Incident No. 21112 Contaminant of Concern → Well/Sample I.D. Date Collected (mm/dd/yy)NaphthaleneMTBEEthylbenzeneEDBAnalytical Method Benzene1,2,4-Trimethylbenzene1,3,5-TrimethylbenzneIsopropylbenzene6200B 1,2,3-TrichloropropaneBromodichloromethaneTotalXyleneessec-ButylbenzeneDiisopropylEther(IPE)Toluenen-Propylbenzene1,2-Dichloroethane4/5/2001 ND ND ND ND NL 2.9 ND NL 20 NA NL ND NL NL ND ND 9/6/2001 NR NR ND NR NL NR NR NL NR NA NL NR NL NL ND NR 1/13/2003 ND ND ND NR NL 2.1 ND NL 4.2 NA NL ND NL NL ND ND 5/22/2012 ND ND ND ND NL ND ND NL ND ND NL ND NL NL ND ND 11/13/2014 ND ND ND ND NL ND ND NL ND ND NL ND NL NL ND ND 2/11/2015 ND ND ND ND NL ND ND NL ND ND NL ND NL NL ND ND 9/6/2001 <1 <1 ND <0.02*NL <1 <1 NL 23 NA NL <1 NL NL ND <1 1/13/2003 ND ND ND NR NL 4.4 ND NL 198 NA NL ND NL NL ND ND 5/22/2012 ND ND ND ND NL ND ND NL 0.65 ND NL ND NL NL ND ND 11/13/2014 ND ND ND ND NL ND ND NL 1.4 ND NL ND NL NL ND ND 2/11/2015 ND ND ND ND NL ND ND NL ND ND NL ND NL NL ND ND 9/6/2001 <1 <1 ND <0.02*NL <1 <1 NL <1 NA NL <1 NL NL ND <1 1/13/2003 ND ND ND NR NL ND ND NL ND NA NL ND NL NL ND ND 5/22/2012 9/6/2001 <1 <1 ND <0.02*NL <1 <1 NL 7 NA NL <1 NL NL ND <1 1/13/2003 ND ND ND NR NL ND ND NL ND NA NL ND NL NL ND ND 5/22/2012 ND ND ND ND NL ND ND NL ND ND NL ND NL NL ND ND 11/13/2014 ND ND ND ND NL ND ND NL ND ND NL ND NL NL ND ND 2/11/2015 ND ND ND ND NL ND ND NL ND ND NL ND NL NL ND ND 9/6/2001 <1 <1 ND <0.02*NL <1 <1 NL 130 <1 NL <1 NL NL ND <1 1/13/2003 ND ND ND NR NL ND ND NL ND ND NL ND NL NL ND ND 5/22/2012 ND ND ND ND NL ND ND NL 75.4 ND NL ND NL NL ND ND 11/13/2014 ND ND ND ND NL ND ND NL 33.5 ND NL ND NL NL ND ND 2/11/2015 ND ND ND ND NL ND ND NL 1.8 ND NL ND NL NL ND ND 10/5/2015 ND ND ND ND NL ND ND NL 244 ND NL ND NL NL ND ND 4/21/2016 ND ND ND ND NL ND ND NL 6.5 ND NL ND NL NL ND ND 10/19/2016 ND ND ND ND NL ND ND NL 248 ND NL ND NL NL ND ND 12/21/2000 ND ND ND ND NL ND ND NL ND NA NL ND NL NL ND 1.2 3/11/2001 ND ND ND ND NL ND ND NL 1.2 NA NL ND NL NL ND ND 9/6/2001 NR NR ND NR NL NR NR NL NR NA NL NR NL NL ND NR 1/13/2003 ND ND ND NR NL ND ND NL 3.6 ND NL ND NL NL ND ND 5/22/2012 ND ND ND ND NL ND ND NL 12.3 ND NL ND NL NL ND ND 11/13/2014 ND ND ND ND NL ND ND NL 26.4 ND NL ND NL NL ND ND 2/11/2015 ND ND ND ND NL ND ND NL 1.1 ND NL ND NL NL ND ND 4/24/2000 ND ND ND ND NL ND ND NL 7.1 ND NL ND NL NL ND 1.2 12/21/2000 ND ND ND ND NL ND ND NL 1.7 ND NL ND NL NL ND ND 3/11/2001 ND ND ND ND NL ND ND NL 2.1 ND NL ND NL NL ND ND 9/6/2001 NR NR ND NR NL NR NR NL NR NR NL NR NL NL ND NR 1/13/2003 ND ND ND NR NL ND ND NL 1.3 ND NL ND NL NL ND ND 5/22/2012 ND ND ND ND NL ND ND NL 1.5 ND NL ND NL NL ND ND 11/13/2014 ND ND ND ND NL ND ND NL 2.5 ND NL ND NL NL ND ND 2/11/2015 ND ND ND ND NL ND ND NL 0.62 ND NL ND NL NL ND ND 5/22/2012 4,050 NL ND ND NL 66.5 1,850 NL 877 775 NL 1,730 NL NL ND 8,260 11/13/2014 16,800.0 NL ND ND NL ND 10,400 NL 556 7,160 NL 6,360 NL NL ND 37,070 2/11/2015 10,900 NL ND ND NL ND 2,330 NL 1,300 728 NL 5,850 NL NL ND 9,800 10/5/2015 6,980 NL ND ND NL 41.8 1,960 NL 718 1,100 NL 6,610 NL NL ND 13,700 4/21/2016 3,330 NL ND ND NL 36.2 2,170 NL 276 1,310 NL 8,000 NL NL ND 16,610 10/19/2016 2,930 NL ND ND NL ND 1,920 NL ND 1,060 NL 5,610 NL NL ND 13,340 11/13/2014 804 NL ND ND NL ND 477 NL 2,720 166 NL 377 NL NL ND 1,305 2/11/2015 828 NL ND ND NL ND 722 NL 1,060 52.2 NL 664 NL NL ND 3,570 11/13/2014 666 NL ND ND NL ND 161 NL ND 91.8 NL 141 NL NL ND 519 2/11/2015 182 NL ND ND NL ND 58.6 NL 20.7 21.3 NL 33.3 NL NL ND 194.9 10/5/2015 86.9 NL ND ND NL ND 2.3 NL 120 ND NL 27.6 NL NL ND 100.2 4/21/2016 207 NL ND ND NL ND 13.5 NL 89.2 9.2 NL 40.8 NL NL ND 94.1 10/19/2016 44.9 NL ND ND NL ND 0.79 NL 31.7 ND NL 1.2 NL NL ND 6 MW-19 MW-16 MW-17 MW-20 Unable to Locate Well MW-21 DMW-1 DMW-2 DPE-1 (SVE-1) DPE-2 DPE-3 TABLE 3 Summary of Groundwater Analytical Results Triangle Texaco 201 North Main Street Mount Holly, North Carolina Terracon Project No. 71179050 NCDEQ Incident No. 21112 Contaminant of Concern → Well/Sample I.D. Date Collected (mm/dd/yy)NaphthaleneMTBEEthylbenzeneEDBAnalytical Method Benzene1,2,4-Trimethylbenzene1,3,5-TrimethylbenzneIsopropylbenzene6200B 1,2,3-TrichloropropaneBromodichloromethaneTotalXyleneessec-ButylbenzeneDiisopropylEther(IPE)Toluenen-Propylbenzene1,2-Dichloroethane11/13/2014 2.9 NL ND ND NL 0.63 0.82 NL 91.4 ND NL ND NL NL ND ND 2/11/2015 20.8 NL ND ND NL ND 6 NL 62.7 ND NL 1.4 NL NL ND 3.9 10/5/2015 280 NL ND ND NL ND 250 NL 152 53.1 NL 32.7 NL NL ND 428 4/21/2016 29.5 NL ND ND NL 1 4.1 NL 105 4.2 NL 4.1 NL NL ND 23.4 10/19/2016 1.1 NL ND ND NL ND ND NL 10.3 ND NL ND NL NL ND ND 11/13/2014 29.1 NL ND ND NL 3.6 5 NL 730 ND NL 4.1 NL NL ND 11.3 2/11/2015 7.2 NL ND ND NL ND ND NL 288 ND NL 2 NL NL ND 4.4 10/5/2015 3 NL ND ND NL ND ND NL 43.7 ND NL 1.1 NL NL ND 0.73 4/21/2016 3 NL ND ND NL ND ND NL 17.2 ND NL 0.67 NL NL ND ND 10/19/2016 11/13/2014 ND NL ND ND NL ND ND NL 188 ND NL ND NL NL ND ND 2/11/2015 ND NL ND ND NL ND ND NL 5.7 ND NL ND NL NL ND ND 4/21/2016 ND NL ND ND NL ND ND NL 124 ND NL ND NL NL ND ND 10/19/2016 5/22/2012 ND NL ND ND NL ND ND NL ND ND NL ND NL NL ND ND 11/13/2014 ND NL ND ND NL ND ND NL ND ND NL ND NL NL ND ND 2/11/2015 ND NL ND ND NL ND ND NL ND ND NL ND NL NL ND ND 10/5/2015 ND NL ND ND NL ND ND NL ND ND NL ND NL NL ND ND 4/21/2016 ND NL ND ND NL ND ND NL ND ND NL ND NL NL ND ND 10/19/2016 ND NL ND ND NL ND ND NL ND ND NL ND NL NL ND ND 51 NE NE NE NE NE NE NE NE NE NE 11 NE NE NE NE 1 0.6 70 0.02 0.4 70 600 70 20 6 70 600 400 400 NE 500 5,000 NE 15,000 50 400 70,000 84,500 25,000 20,000 6,000 30,000 260,000 28,500 25,000 NE 85,500 Notes: µg/L = Micrograms per liter NA = Not analyzed ND = Not detected at or above laboratory reporting limits. NL = Not listed in the tables in the Active Remediation Monitoring Report dated November 11, 2016 by Shield Engineering, Inc. LPH = Liquid Phase Hydrocarbons * = 1,2-Dibromoethane (EDB) analyzed by EPA Method 504.1 Chloromethane was detected at 74.2J in MW-1 during the September 20, 2017 sampling event. J = Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit. Contaminants that exceed the NCDEQ - NCAC 15A 2L Groundwater Standards are in BOLD. Contaminants that exceed the NCDEQ - NCAC 15A 2B Surface Water Standards are shown in light grey GCL = Gross contamination levels for groundwater Contaminants that exceed the GCLs are shown in yellow. 2L Standard (ug/L) GCL (ug/L) DPE-6 Trip Blank 2B Standard (ug/L) Well Not Sampled - Vehicle Parked on Well Well Not Sampled - Vehicle Parked on Well DPE-4 (RW-1) DPE-5 APPENDIX A LABORATORY ANALYTICAL RESULTS AND CHAIN-OF-CUSTODY FORMS #=CL# November 27, 2019 LIMS USE: FR - HALEY MARTIN LIMS OBJECT ID: 92454546 92454546 Project: Pace Project No.: RE: Haley Martin Terracon NC 2701 Westport Road Charlotte, NC 28208 Triangle Texaco Dear Haley Martin: Enclosed are the analytical results for sample(s) received by the laboratory on November 20, 2019. The results relate only to the samples included in this report. Results reported herein conform to the most current, applicable TNI/NELAC standards and the laboratory's Quality Assurance Manual, where applicable, unless otherwise noted in the body of the report. If you have any questions concerning this report, please feel free to contact me. Sincerely, Taylor Ezell taylor.ezell@pacelabs.com Project Manager (704)875-9092 Enclosures REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 1 of 28 #=CP# CERTIFICATIONS Pace Project No.: Project: 92454546 Triangle Texaco Pace Analytical Services Charlotte 9800 Kincey Ave. Ste 100, Huntersville, NC 28078 Louisiana/NELAP Certification # LA170028 North Carolina Drinking Water Certification #: 37706 North Carolina Field Services Certification #: 5342 North Carolina Wastewater Certification #: 12 South Carolina Certification #: 99006001 Florida/NELAP Certification #: E87627 Kentucky UST Certification #: 84 Virginia/VELAP Certification #: 460221 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 2 of 28 #=SS# SAMPLE SUMMARY Pace Project No.: Project: 92454546 Triangle Texaco Lab ID Sample ID Matrix Date Collected Date Received 92454546001 FB Water 11/19/19 10:05 11/20/19 08:57 92454546002 MW-1 Water 11/19/19 12:10 11/20/19 08:57 92454546003 MW-1A Water 11/19/19 11:35 11/20/19 08:57 92454546004 MW-2 Water 11/19/19 10:45 11/20/19 08:57 92454546005 MW-8 Water 11/19/19 12:45 11/20/19 08:57 92454546006 MW-10 Water 11/19/19 11:10 11/20/19 08:57 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 3 of 28 #=SA# SAMPLE ANALYTE COUNT Pace Project No.: Project: 92454546 Triangle Texaco Lab ID Sample ID Method Analytes Reported LaboratoryAnalysts 92454546001 FB SM 6200B 63 PASI-CCL 92454546002 MW-1 SM 6200B 63 PASI-CCL 92454546003 MW-1A SM 6200B 63 PASI-CCL 92454546004 MW-2 SM 6200B 63 PASI-CCL 92454546005 MW-8 SM 6200B 63 PASI-CCL 92454546006 MW-10 SM 6200B 63 PASI-CCL REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 4 of 28 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92454546 Triangle Texaco Sample:FB Lab ID:92454546001 Collected:11/19/19 10:05 Received:11/20/19 08:57 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B6200B MSV Benzene ND ug/L 11/23/19 11:23 71-43-20.50 0.24 1 Bromobenzene ND ug/L 11/23/19 11:23 108-86-10.50 0.22 1 Bromochloromethane ND ug/L 11/23/19 11:23 74-97-50.50 0.26 1 Bromodichloromethane ND ug/L 11/23/19 11:23 75-27-40.50 0.18 1 Bromoform ND ug/L 11/23/19 11:23 75-25-20.50 0.40 1 Bromomethane ND ug/L 11/23/19 11:23 74-83-95.0 1.7 1 n-Butylbenzene ND ug/L 11/23/19 11:23 104-51-80.50 0.35 1 sec-Butylbenzene ND ug/L 11/23/19 11:23 135-98-80.50 0.25 1 tert-Butylbenzene ND ug/L 11/23/19 11:23 98-06-60.50 0.25 1 Carbon tetrachloride ND ug/L 11/23/19 11:23 56-23-50.50 0.23 1 Chlorobenzene ND ug/L 11/23/19 11:23 108-90-70.50 0.22 1 Chloroethane ND ug/L 11/23/19 11:23 75-00-31.0 0.58 1 Chloroform ND ug/L 11/23/19 11:23 67-66-30.50 0.35 1 Chloromethane ND ug/L 11/23/19 11:23 74-87-31.0 0.42 1 2-Chlorotoluene ND ug/L 11/23/19 11:23 95-49-80.50 0.21 1 4-Chlorotoluene ND ug/L 11/23/19 11:23 106-43-40.50 0.21 1 1,2-Dibromo-3-chloropropane ND ug/L 11/23/19 11:23 96-12-81.0 0.38 1 Dibromochloromethane ND ug/L 11/23/19 11:23 124-48-10.50 0.40 1 1,2-Dibromoethane (EDB)ND ug/L 11/23/19 11:23 106-93-40.50 0.23 1 Dibromomethane ND ug/L 11/23/19 11:23 74-95-30.50 0.31 1 1,2-Dichlorobenzene ND ug/L 11/23/19 11:23 95-50-10.50 0.24 1 1,3-Dichlorobenzene ND ug/L 11/23/19 11:23 541-73-10.50 0.25 1 1,4-Dichlorobenzene ND ug/L 11/23/19 11:23 106-46-70.50 0.25 1 Dichlorodifluoromethane ND ug/L 11/23/19 11:23 75-71-80.50 0.28 1 1,1-Dichloroethane ND ug/L 11/23/19 11:23 75-34-30.50 0.24 1 1,2-Dichloroethane ND ug/L 11/23/19 11:23 107-06-20.50 0.26 1 1,1-Dichloroethene ND ug/L 11/23/19 11:23 75-35-40.50 0.22 1 cis-1,2-Dichloroethene ND ug/L 11/23/19 11:23 156-59-20.50 0.21 1 trans-1,2-Dichloroethene ND ug/L 11/23/19 11:23 156-60-50.50 0.26 1 1,2-Dichloropropane ND ug/L 11/23/19 11:23 78-87-50.50 0.18 1 1,3-Dichloropropane ND ug/L 11/23/19 11:23 142-28-90.50 0.34 1 2,2-Dichloropropane ND ug/L 11/23/19 11:23 594-20-70.50 0.28 1 1,1-Dichloropropene ND ug/L 11/23/19 11:23 563-58-60.50 0.35 1 cis-1,3-Dichloropropene ND ug/L 11/23/19 11:23 10061-01-50.50 0.36 1 trans-1,3-Dichloropropene ND ug/L 11/23/19 11:23 10061-02-60.50 0.39 1 Diisopropyl ether ND ug/L 11/23/19 11:23 108-20-30.50 0.33 1 Ethylbenzene ND ug/L 11/23/19 11:23 100-41-40.50 0.24 1 Hexachloro-1,3-butadiene ND ug/L 11/23/19 11:23 87-68-32.0 1.2 1 Isopropylbenzene (Cumene)ND ug/L 11/23/19 11:23 98-82-80.50 0.24 1 Methylene Chloride ND ug/L 11/23/19 11:23 75-09-22.0 1.5 1 Methyl-tert-butyl ether ND ug/L 11/23/19 11:23 1634-04-40.50 0.44 1 Naphthalene ND ug/L 11/23/19 11:23 91-20-32.0 0.66 1 n-Propylbenzene ND ug/L 11/23/19 11:23 103-65-10.50 0.24 1 Styrene ND ug/L 11/23/19 11:23 100-42-50.50 0.26 1 1,1,1,2-Tetrachloroethane ND ug/L 11/23/19 11:23 630-20-60.50 0.42 1 1,1,2,2-Tetrachloroethane ND ug/L 11/23/19 11:23 79-34-50.50 0.19 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/27/2019 03:17 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 5 of 28 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92454546 Triangle Texaco Sample:FB Lab ID:92454546001 Collected:11/19/19 10:05 Received:11/20/19 08:57 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B6200B MSV Tetrachloroethene ND ug/L 11/23/19 11:23 127-18-40.50 0.23 1 Toluene ND ug/L 11/23/19 11:23 108-88-30.50 0.23 1 1,2,3-Trichlorobenzene ND ug/L 11/23/19 11:23 87-61-62.0 0.78 1 1,2,4-Trichlorobenzene ND ug/L 11/23/19 11:23 120-82-12.0 0.44 1 1,1,1-Trichloroethane ND ug/L 11/23/19 11:23 71-55-60.50 0.28 1 1,1,2-Trichloroethane ND ug/L 11/23/19 11:23 79-00-50.50 0.23 1 Trichloroethene ND ug/L 11/23/19 11:23 79-01-60.50 0.23 1 Trichlorofluoromethane ND ug/L 11/23/19 11:23 75-69-41.0 0.34 1 1,2,3-Trichloropropane ND ug/L 11/23/19 11:23 96-18-40.50 0.27 1 1,2,4-Trimethylbenzene ND ug/L 11/23/19 11:23 95-63-60.50 0.19 1 1,3,5-Trimethylbenzene ND ug/L 11/23/19 11:23 108-67-80.50 0.23 1 Vinyl chloride ND ug/L 11/23/19 11:23 75-01-41.0 0.41 1 m&p-Xylene ND ug/L 11/23/19 11:23 179601-23-11.0 0.44 1 o-Xylene ND ug/L 11/23/19 11:23 95-47-60.50 0.24 1 Surrogates 1,2-Dichloroethane-d4 (S)104 %11/23/19 11:23 17060-07-070-130 1 4-Bromofluorobenzene (S)96 %11/23/19 11:23 460-00-470-130 1 Toluene-d8 (S)97 %11/23/19 11:23 2037-26-570-130 1 Sample:MW-1 Lab ID:92454546002 Collected:11/19/19 12:10 Received:11/20/19 08:57 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B6200B MSV Benzene 3010 ug/L 11/23/19 15:25 71-43-225.0 12.0 50 Bromobenzene ND ug/L 11/23/19 15:25 108-86-125.0 10.8 50 Bromochloromethane ND ug/L 11/23/19 15:25 74-97-525.0 12.9 50 Bromodichloromethane ND ug/L 11/23/19 15:25 75-27-425.0 9.2 50 Bromoform ND ug/L 11/23/19 15:25 75-25-225.0 20.2 50 Bromomethane ND ug/L 11/23/19 15:25 74-83-925086.0 50 n-Butylbenzene ND ug/L 11/23/19 15:25 104-51-825.0 17.6 50 sec-Butylbenzene ND ug/L 11/23/19 15:25 135-98-825.0 12.3 50 tert-Butylbenzene ND ug/L 11/23/19 15:25 98-06-625.0 12.5 50 Carbon tetrachloride ND ug/L 11/23/19 15:25 56-23-525.0 11.6 50 Chlorobenzene ND ug/L 11/23/19 15:25 108-90-725.0 11.2 50 Chloroethane ND ug/L 11/23/19 15:25 75-00-350.0 29.2 50 Chloroform ND ug/L 11/23/19 15:25 67-66-325.0 17.6 50 Chloromethane ND ug/L 11/23/19 15:25 74-87-350.0 20.8 50 2-Chlorotoluene ND ug/L 11/23/19 15:25 95-49-825.0 10.4 50 4-Chlorotoluene ND ug/L 11/23/19 15:25 106-43-425.0 10.3 50 1,2-Dibromo-3-chloropropane ND ug/L 11/23/19 15:25 96-12-850.0 19.2 50 Dibromochloromethane ND ug/L 11/23/19 15:25 124-48-125.0 20.1 50 1,2-Dibromoethane (EDB)ND ug/L 11/23/19 15:25 106-93-425.0 11.6 50 Dibromomethane ND ug/L 11/23/19 15:25 74-95-325.0 15.5 50 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/27/2019 03:17 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 6 of 28 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92454546 Triangle Texaco Sample:MW-1 Lab ID:92454546002 Collected:11/19/19 12:10 Received:11/20/19 08:57 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B6200B MSV 1,2-Dichlorobenzene ND ug/L 11/23/19 15:25 95-50-125.0 12.0 50 1,3-Dichlorobenzene ND ug/L 11/23/19 15:25 541-73-125.0 12.5 50 1,4-Dichlorobenzene ND ug/L 11/23/19 15:25 106-46-725.0 12.4 50 Dichlorodifluoromethane ND ug/L 11/23/19 15:25 75-71-825.0 14.2 50 1,1-Dichloroethane ND ug/L 11/23/19 15:25 75-34-325.0 12.2 50 1,2-Dichloroethane ND ug/L 11/23/19 15:25 107-06-225.0 13.2 50 1,1-Dichloroethene ND ug/L 11/23/19 15:25 75-35-425.0 10.9 50 cis-1,2-Dichloroethene ND ug/L 11/23/19 15:25 156-59-225.0 10.4 50 trans-1,2-Dichloroethene ND ug/L 11/23/19 15:25 156-60-525.0 12.8 50 1,2-Dichloropropane ND ug/L 11/23/19 15:25 78-87-525.0 9.2 50 1,3-Dichloropropane ND ug/L 11/23/19 15:25 142-28-925.0 17.0 50 2,2-Dichloropropane ND ug/L 11/23/19 15:25 594-20-725.0 14.0 50 1,1-Dichloropropene ND ug/L 11/23/19 15:25 563-58-625.0 17.4 50 cis-1,3-Dichloropropene ND ug/L 11/23/19 15:25 10061-01-525.0 17.8 50 trans-1,3-Dichloropropene ND ug/L 11/23/19 15:25 10061-02-625.0 19.7 50 Diisopropyl ether ND ug/L 11/23/19 15:25 108-20-325.0 16.7 50 Ethylbenzene 2470 ug/L 11/23/19 15:25 100-41-425.0 12.0 50 Hexachloro-1,3-butadiene ND ug/L 11/23/19 15:25 87-68-310060.0 50 Isopropylbenzene (Cumene)98.2 ug/L 11/23/19 15:25 98-82-825.0 11.9 50 Methylene Chloride ND ug/L 11/23/19 15:25 75-09-210075.0 50 Methyl-tert-butyl ether ND ug/L 11/23/19 15:25 1634-04-425.0 22.2 50 Naphthalene 328 ug/L 11/23/19 15:25 91-20-310033.0 50 n-Propylbenzene 195 ug/L 11/23/19 15:25 103-65-125.0 12.0 50 Styrene ND ug/L 11/23/19 15:25 100-42-525.0 12.8 50 1,1,1,2-Tetrachloroethane ND ug/L 11/23/19 15:25 630-20-625.0 21.1 50 1,1,2,2-Tetrachloroethane ND ug/L 11/23/19 15:25 79-34-525.0 9.6 50 Tetrachloroethene ND ug/L 11/23/19 15:25 127-18-425.0 11.6 50 Toluene 6860 ug/L 11/23/19 15:25 108-88-325.0 11.4 50 1,2,3-Trichlorobenzene ND ug/L 11/23/19 15:25 87-61-610039.0 50 1,2,4-Trichlorobenzene ND ug/L 11/23/19 15:25 120-82-110021.8 50 1,1,1-Trichloroethane ND ug/L 11/23/19 15:25 71-55-625.0 13.9 50 1,1,2-Trichloroethane ND ug/L 11/23/19 15:25 79-00-525.0 11.6 50 Trichloroethene ND ug/L 11/23/19 15:25 79-01-625.0 11.6 50 Trichlorofluoromethane ND ug/L 11/23/19 15:25 75-69-450.0 16.8 50 1,2,3-Trichloropropane ND ug/L 11/23/19 15:25 96-18-425.0 13.6 50 1,2,4-Trimethylbenzene 1820 ug/L 11/23/19 15:25 95-63-625.0 9.6 50 1,3,5-Trimethylbenzene 560 ug/L 11/23/19 15:25 108-67-825.0 11.4 50 Vinyl chloride ND ug/L 11/23/19 15:25 75-01-450.0 20.4 50 m&p-Xylene 10100 ug/L 11/23/19 15:25 179601-23-150.0 22.0 50 o-Xylene 3860 ug/L 11/23/19 15:25 95-47-625.0 11.8 50 Surrogates 1,2-Dichloroethane-d4 (S)100 %11/23/19 15:25 17060-07-070-130 50 4-Bromofluorobenzene (S)99 %11/23/19 15:25 460-00-470-130 50 Toluene-d8 (S)98 %11/23/19 15:25 2037-26-570-130 50 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/27/2019 03:17 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 7 of 28 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92454546 Triangle Texaco Sample:MW-1A Lab ID:92454546003 Collected:11/19/19 11:35 Received:11/20/19 08:57 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B6200B MSV Benzene 2910 ug/L 11/26/19 19:53 71-43-212.5 6.0 25 Bromobenzene ND ug/L 11/26/19 19:53 108-86-112.5 5.4 25 Bromochloromethane ND ug/L 11/26/19 19:53 74-97-512.5 6.4 25 Bromodichloromethane ND ug/L 11/26/19 19:53 75-27-412.5 4.6 25 Bromoform ND ug/L 11/26/19 19:53 75-25-212.5 10.1 25 Bromomethane ND ug/L 11/26/19 19:53 74-83-912543.0 25 n-Butylbenzene ND ug/L 11/26/19 19:53 104-51-812.5 8.8 25 sec-Butylbenzene ND ug/L 11/26/19 19:53 135-98-812.5 6.2 25 tert-Butylbenzene ND ug/L 11/26/19 19:53 98-06-612.5 6.2 25 Carbon tetrachloride ND ug/L 11/26/19 19:53 56-23-512.5 5.8 25 Chlorobenzene ND ug/L 11/26/19 19:53 108-90-712.5 5.6 25 Chloroethane ND ug/L 11/26/19 19:53 75-00-325.0 14.6 25 Chloroform ND ug/L 11/26/19 19:53 67-66-312.5 8.8 25 Chloromethane ND ug/L 11/26/19 19:53 74-87-325.0 10.4 25 2-Chlorotoluene ND ug/L 11/26/19 19:53 95-49-812.5 5.2 25 4-Chlorotoluene ND ug/L 11/26/19 19:53 106-43-412.5 5.2 25 1,2-Dibromo-3-chloropropane ND ug/L 11/26/19 19:53 96-12-825.0 9.6 25 Dibromochloromethane ND ug/L 11/26/19 19:53 124-48-112.5 10.0 25 1,2-Dibromoethane (EDB)ND ug/L 11/26/19 19:53 106-93-412.5 5.8 25 Dibromomethane ND ug/L 11/26/19 19:53 74-95-312.5 7.8 25 1,2-Dichlorobenzene ND ug/L 11/26/19 19:53 95-50-112.5 6.0 25 1,3-Dichlorobenzene ND ug/L 11/26/19 19:53 541-73-112.5 6.2 25 1,4-Dichlorobenzene ND ug/L 11/26/19 19:53 106-46-712.5 6.2 25 Dichlorodifluoromethane ND ug/L 11/26/19 19:53 75-71-812.5 7.1 25 1,1-Dichloroethane ND ug/L 11/26/19 19:53 75-34-312.5 6.1 25 1,2-Dichloroethane 16.0 ug/L 11/26/19 19:53 107-06-212.5 6.6 25 1,1-Dichloroethene ND ug/L 11/26/19 19:53 75-35-412.5 5.4 25 cis-1,2-Dichloroethene ND ug/L 11/26/19 19:53 156-59-212.5 5.2 25 trans-1,2-Dichloroethene ND ug/L 11/26/19 19:53 156-60-512.5 6.4 25 1,2-Dichloropropane ND ug/L 11/26/19 19:53 78-87-512.5 4.6 25 1,3-Dichloropropane ND ug/L 11/26/19 19:53 142-28-912.5 8.5 25 2,2-Dichloropropane ND ug/L 11/26/19 19:53 594-20-712.5 7.0 25 1,1-Dichloropropene ND ug/L 11/26/19 19:53 563-58-612.5 8.7 25 cis-1,3-Dichloropropene ND ug/L 11/26/19 19:53 10061-01-512.5 8.9 25 trans-1,3-Dichloropropene ND ug/L 11/26/19 19:53 10061-02-612.5 9.8 25 Diisopropyl ether ND ug/L 11/26/19 19:53 108-20-312.5 8.4 25 Ethylbenzene 87.5 ug/L 11/26/19 19:53 100-41-412.5 6.0 25 Hexachloro-1,3-butadiene ND ug/L 11/26/19 19:53 87-68-350.0 30.0 25 Isopropylbenzene (Cumene)51.9 ug/L 11/26/19 19:53 98-82-812.5 6.0 25 Methylene Chloride ND ug/L 11/26/19 19:53 75-09-250.0 37.5 25 Methyl-tert-butyl ether 666 ug/L 11/26/19 19:53 1634-04-412.5 11.1 25 Naphthalene 73.6 ug/L 11/26/19 19:53 91-20-350.0 16.5 25 n-Propylbenzene 33.2 ug/L 11/26/19 19:53 103-65-112.5 6.0 25 Styrene ND ug/L 11/26/19 19:53 100-42-512.5 6.4 25 1,1,1,2-Tetrachloroethane ND ug/L 11/26/19 19:53 630-20-612.5 10.6 25 1,1,2,2-Tetrachloroethane ND ug/L 11/26/19 19:53 79-34-512.5 4.8 25 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/27/2019 03:17 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 8 of 28 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92454546 Triangle Texaco Sample:MW-1A Lab ID:92454546003 Collected:11/19/19 11:35 Received:11/20/19 08:57 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B6200B MSV Tetrachloroethene ND ug/L 11/26/19 19:53 127-18-412.5 5.8 25 Toluene 177 ug/L 11/26/19 19:53 108-88-312.5 5.7 25 1,2,3-Trichlorobenzene ND ug/L 11/26/19 19:53 87-61-650.0 19.5 25 1,2,4-Trichlorobenzene ND ug/L 11/26/19 19:53 120-82-150.0 10.9 25 1,1,1-Trichloroethane ND ug/L 11/26/19 19:53 71-55-612.5 7.0 25 1,1,2-Trichloroethane ND ug/L 11/26/19 19:53 79-00-512.5 5.8 25 Trichloroethene ND ug/L 11/26/19 19:53 79-01-612.5 5.8 25 Trichlorofluoromethane ND ug/L 11/26/19 19:53 75-69-425.0 8.4 25 1,2,3-Trichloropropane ND ug/L 11/26/19 19:53 96-18-412.5 6.8 25 1,2,4-Trimethylbenzene 52.1 ug/L 11/26/19 19:53 95-63-612.5 4.8 25 1,3,5-Trimethylbenzene 37.9 ug/L 11/26/19 19:53 108-67-812.5 5.7 25 Vinyl chloride ND ug/L 11/26/19 19:53 75-01-425.0 10.2 25 m&p-Xylene 241 ug/L 11/26/19 19:53 179601-23-125.0 11.0 25 o-Xylene 401 ug/L 11/26/19 19:53 95-47-612.5 5.9 25 Surrogates 1,2-Dichloroethane-d4 (S)91 %11/26/19 19:53 17060-07-070-130 25 4-Bromofluorobenzene (S)97 %11/26/19 19:53 460-00-470-130 25 Toluene-d8 (S)98 %11/26/19 19:53 2037-26-570-130 25 Sample:MW-2 Lab ID:92454546004 Collected:11/19/19 10:45 Received:11/20/19 08:57 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B6200B MSV Benzene 39.5 ug/L 11/26/19 20:46 71-43-22.0 0.96 4 Bromobenzene ND ug/L 11/26/19 20:46 108-86-12.0 0.86 4 Bromochloromethane ND ug/L 11/26/19 20:46 74-97-52.0 1.0 4 Bromodichloromethane ND ug/L 11/26/19 20:46 75-27-42.0 0.74 4 Bromoform ND ug/L 11/26/19 20:46 75-25-22.0 1.6 4 Bromomethane ND ug/L 11/26/19 20:46 74-83-920.0 6.9 4 n-Butylbenzene ND ug/L 11/26/19 20:46 104-51-82.0 1.4 4 sec-Butylbenzene ND ug/L 11/26/19 20:46 135-98-82.0 0.98 4 tert-Butylbenzene ND ug/L 11/26/19 20:46 98-06-62.0 1.0 4 Carbon tetrachloride ND ug/L 11/26/19 20:46 56-23-52.0 0.93 4 Chlorobenzene ND ug/L 11/26/19 20:46 108-90-72.0 0.90 4 Chloroethane ND ug/L 11/26/19 20:46 75-00-34.0 2.3 4 Chloroform ND ug/L 11/26/19 20:46 67-66-32.0 1.4 4 Chloromethane ND ug/L 11/26/19 20:46 74-87-34.0 1.7 4 2-Chlorotoluene ND ug/L 11/26/19 20:46 95-49-82.0 0.83 4 4-Chlorotoluene ND ug/L 11/26/19 20:46 106-43-42.0 0.82 4 1,2-Dibromo-3-chloropropane ND ug/L 11/26/19 20:46 96-12-84.0 1.5 4 Dibromochloromethane ND ug/L 11/26/19 20:46 124-48-12.0 1.6 4 1,2-Dibromoethane (EDB)ND ug/L 11/26/19 20:46 106-93-42.0 0.92 4 Dibromomethane ND ug/L 11/26/19 20:46 74-95-32.0 1.2 4 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/27/2019 03:17 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 9 of 28 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92454546 Triangle Texaco Sample:MW-2 Lab ID:92454546004 Collected:11/19/19 10:45 Received:11/20/19 08:57 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B6200B MSV 1,2-Dichlorobenzene ND ug/L 11/26/19 20:46 95-50-12.0 0.96 4 1,3-Dichlorobenzene ND ug/L 11/26/19 20:46 541-73-12.0 1.0 4 1,4-Dichlorobenzene ND ug/L 11/26/19 20:46 106-46-72.0 1.0 4 Dichlorodifluoromethane ND ug/L 11/26/19 20:46 75-71-82.0 1.1 4 1,1-Dichloroethane ND ug/L 11/26/19 20:46 75-34-32.0 0.98 4 1,2-Dichloroethane ND ug/L 11/26/19 20:46 107-06-22.0 1.1 4 1,1-Dichloroethene ND ug/L 11/26/19 20:46 75-35-42.0 0.87 4 cis-1,2-Dichloroethene ND ug/L 11/26/19 20:46 156-59-22.0 0.83 4 trans-1,2-Dichloroethene ND ug/L 11/26/19 20:46 156-60-52.0 1.0 4 1,2-Dichloropropane ND ug/L 11/26/19 20:46 78-87-52.0 0.73 4 1,3-Dichloropropane ND ug/L 11/26/19 20:46 142-28-92.0 1.4 4 2,2-Dichloropropane ND ug/L 11/26/19 20:46 594-20-72.0 1.1 4 1,1-Dichloropropene ND ug/L 11/26/19 20:46 563-58-62.0 1.4 4 cis-1,3-Dichloropropene ND ug/L 11/26/19 20:46 10061-01-52.0 1.4 4 trans-1,3-Dichloropropene ND ug/L 11/26/19 20:46 10061-02-62.0 1.6 4 Diisopropyl ether ND ug/L 11/26/19 20:46 108-20-32.0 1.3 4 Ethylbenzene 50.8 ug/L 11/26/19 20:46 100-41-42.0 0.96 4 Hexachloro-1,3-butadiene ND ug/L 11/26/19 20:46 87-68-38.0 4.8 4 Isopropylbenzene (Cumene)34.9 ug/L 11/26/19 20:46 98-82-82.0 0.95 4 Methylene Chloride ND ug/L 11/26/19 20:46 75-09-28.0 6.0 4 Methyl-tert-butyl ether 88.0 ug/L 11/26/19 20:46 1634-04-42.0 1.8 4 Naphthalene 32.8 ug/L 11/26/19 20:46 91-20-38.0 2.6 4 n-Propylbenzene 88.9 ug/L 11/26/19 20:46 103-65-12.0 0.96 4 Styrene ND ug/L 11/26/19 20:46 100-42-52.0 1.0 4 1,1,1,2-Tetrachloroethane ND ug/L 11/26/19 20:46 630-20-62.0 1.7 4 1,1,2,2-Tetrachloroethane ND ug/L 11/26/19 20:46 79-34-52.0 0.77 4 Tetrachloroethene ND ug/L 11/26/19 20:46 127-18-42.0 0.93 4 Toluene 6.9 ug/L 11/26/19 20:46 108-88-32.0 0.91 4 1,2,3-Trichlorobenzene ND ug/L 11/26/19 20:46 87-61-68.0 3.1 4 1,2,4-Trichlorobenzene ND ug/L 11/26/19 20:46 120-82-18.0 1.7 4 1,1,1-Trichloroethane ND ug/L 11/26/19 20:46 71-55-62.0 1.1 4 1,1,2-Trichloroethane ND ug/L 11/26/19 20:46 79-00-52.0 0.93 4 Trichloroethene ND ug/L 11/26/19 20:46 79-01-62.0 0.93 4 Trichlorofluoromethane ND ug/L 11/26/19 20:46 75-69-44.0 1.3 4 1,2,3-Trichloropropane 3.2 ug/L 11/26/19 20:46 96-18-42.0 1.1 4 1,2,4-Trimethylbenzene 394 ug/L 11/26/19 20:46 95-63-62.0 0.77 4 1,3,5-Trimethylbenzene 154 ug/L 11/26/19 20:46 108-67-82.0 0.91 4 Vinyl chloride ND ug/L 11/26/19 20:46 75-01-44.0 1.6 4 m&p-Xylene 68.6 ug/L 11/26/19 20:46 179601-23-14.0 1.8 4 o-Xylene 10.7 ug/L 11/26/19 20:46 95-47-62.0 0.95 4 Surrogates 1,2-Dichloroethane-d4 (S)89 %11/26/19 20:46 17060-07-070-130 4 4-Bromofluorobenzene (S)98 %11/26/19 20:46 460-00-470-130 4 Toluene-d8 (S)98 %11/26/19 20:46 2037-26-570-130 4 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/27/2019 03:17 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 10 of 28 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92454546 Triangle Texaco Sample:MW-8 Lab ID:92454546005 Collected:11/19/19 12:45 Received:11/20/19 08:57 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B6200B MSV Benzene 3620 ug/L 11/23/19 14:50 71-43-210.0 4.8 20 Bromobenzene ND ug/L 11/23/19 14:50 108-86-110.0 4.3 20 Bromochloromethane ND ug/L 11/23/19 14:50 74-97-510.0 5.2 20 Bromodichloromethane ND ug/L 11/23/19 14:50 75-27-410.0 3.7 20 Bromoform ND ug/L 11/23/19 14:50 75-25-210.0 8.1 20 Bromomethane ND ug/L 11/23/19 14:50 74-83-910034.4 20 n-Butylbenzene ND ug/L 11/23/19 14:50 104-51-810.0 7.1 20 sec-Butylbenzene ND ug/L 11/23/19 14:50 135-98-810.0 4.9 20 tert-Butylbenzene ND ug/L 11/23/19 14:50 98-06-610.0 5.0 20 Carbon tetrachloride ND ug/L 11/23/19 14:50 56-23-510.0 4.6 20 Chlorobenzene ND ug/L 11/23/19 14:50 108-90-710.0 4.5 20 Chloroethane ND ug/L 11/23/19 14:50 75-00-320.0 11.7 20 Chloroform ND ug/L 11/23/19 14:50 67-66-310.0 7.1 20 Chloromethane ND ug/L 11/23/19 14:50 74-87-320.0 8.3 20 2-Chlorotoluene ND ug/L 11/23/19 14:50 95-49-810.0 4.1 20 4-Chlorotoluene ND ug/L 11/23/19 14:50 106-43-410.0 4.1 20 1,2-Dibromo-3-chloropropane ND ug/L 11/23/19 14:50 96-12-820.0 7.7 20 Dibromochloromethane ND ug/L 11/23/19 14:50 124-48-110.0 8.0 20 1,2-Dibromoethane (EDB)ND ug/L 11/23/19 14:50 106-93-410.0 4.6 20 Dibromomethane ND ug/L 11/23/19 14:50 74-95-310.0 6.2 20 1,2-Dichlorobenzene ND ug/L 11/23/19 14:50 95-50-110.0 4.8 20 1,3-Dichlorobenzene ND ug/L 11/23/19 14:50 541-73-110.0 5.0 20 1,4-Dichlorobenzene ND ug/L 11/23/19 14:50 106-46-710.0 5.0 20 Dichlorodifluoromethane ND ug/L 11/23/19 14:50 75-71-810.0 5.7 20 1,1-Dichloroethane ND ug/L 11/23/19 14:50 75-34-310.0 4.9 20 1,2-Dichloroethane ND ug/L 11/23/19 14:50 107-06-210.0 5.3 20 1,1-Dichloroethene ND ug/L 11/23/19 14:50 75-35-410.0 4.4 20 cis-1,2-Dichloroethene ND ug/L 11/23/19 14:50 156-59-210.0 4.1 20 trans-1,2-Dichloroethene ND ug/L 11/23/19 14:50 156-60-510.0 5.1 20 1,2-Dichloropropane ND ug/L 11/23/19 14:50 78-87-510.0 3.7 20 1,3-Dichloropropane ND ug/L 11/23/19 14:50 142-28-910.0 6.8 20 2,2-Dichloropropane ND ug/L 11/23/19 14:50 594-20-710.0 5.6 20 1,1-Dichloropropene ND ug/L 11/23/19 14:50 563-58-610.0 7.0 20 cis-1,3-Dichloropropene ND ug/L 11/23/19 14:50 10061-01-510.0 7.1 20 trans-1,3-Dichloropropene ND ug/L 11/23/19 14:50 10061-02-610.0 7.9 20 Diisopropyl ether ND ug/L 11/23/19 14:50 108-20-310.0 6.7 20 Ethylbenzene 1030 ug/L 11/23/19 14:50 100-41-410.0 4.8 20 Hexachloro-1,3-butadiene ND ug/L 11/23/19 14:50 87-68-340.0 24.0 20 Isopropylbenzene (Cumene)67.4 ug/L 11/23/19 14:50 98-82-810.0 4.8 20 Methylene Chloride ND ug/L 11/23/19 14:50 75-09-240.0 30.0 20 Methyl-tert-butyl ether ND ug/L 11/23/19 14:50 1634-04-410.0 8.9 20 Naphthalene 458 ug/L 11/23/19 14:50 91-20-340.0 13.2 20 n-Propylbenzene 89.8 ug/L 11/23/19 14:50 103-65-110.0 4.8 20 Styrene ND ug/L 11/23/19 14:50 100-42-510.0 5.1 20 1,1,1,2-Tetrachloroethane ND ug/L 11/23/19 14:50 630-20-610.0 8.4 20 1,1,2,2-Tetrachloroethane ND ug/L 11/23/19 14:50 79-34-510.0 3.9 20 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/27/2019 03:17 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 11 of 28 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92454546 Triangle Texaco Sample:MW-8 Lab ID:92454546005 Collected:11/19/19 12:45 Received:11/20/19 08:57 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B6200B MSV Tetrachloroethene ND ug/L 11/23/19 14:50 127-18-410.0 4.6 20 Toluene 441 ug/L 11/23/19 14:50 108-88-310.0 4.6 20 1,2,3-Trichlorobenzene ND ug/L 11/23/19 14:50 87-61-640.0 15.6 20 1,2,4-Trichlorobenzene ND ug/L 11/23/19 14:50 120-82-140.0 8.7 20 1,1,1-Trichloroethane ND ug/L 11/23/19 14:50 71-55-610.0 5.6 20 1,1,2-Trichloroethane ND ug/L 11/23/19 14:50 79-00-510.0 4.6 20 Trichloroethene ND ug/L 11/23/19 14:50 79-01-610.0 4.6 20 Trichlorofluoromethane ND ug/L 11/23/19 14:50 75-69-420.0 6.7 20 1,2,3-Trichloropropane ND ug/L 11/23/19 14:50 96-18-410.0 5.4 20 1,2,4-Trimethylbenzene 443 ug/L 11/23/19 14:50 95-63-610.0 3.9 20 1,3,5-Trimethylbenzene 130 ug/L 11/23/19 14:50 108-67-810.0 4.5 20 Vinyl chloride ND ug/L 11/23/19 14:50 75-01-420.0 8.1 20 m&p-Xylene 2180 ug/L 11/23/19 14:50 179601-23-120.0 8.8 20 o-Xylene 195 ug/L 11/23/19 14:50 95-47-610.0 4.7 20 Surrogates 1,2-Dichloroethane-d4 (S)102 %11/23/19 14:50 17060-07-070-130 20 4-Bromofluorobenzene (S)98 %11/23/19 14:50 460-00-470-130 20 Toluene-d8 (S)99 %11/23/19 14:50 2037-26-570-130 20 Sample:MW-10 Lab ID:92454546006 Collected:11/19/19 11:10 Received:11/20/19 08:57 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B6200B MSV Benzene 136 ug/L 11/26/19 21:22 71-43-21.2 0.60 2.5 Bromobenzene ND ug/L 11/26/19 21:22 108-86-11.2 0.54 2.5 Bromochloromethane ND ug/L 11/26/19 21:22 74-97-51.2 0.64 2.5 Bromodichloromethane ND ug/L 11/26/19 21:22 75-27-41.2 0.46 2.5 Bromoform ND ug/L 11/26/19 21:22 75-25-21.2 1.0 2.5 Bromomethane ND ug/L 11/26/19 21:22 74-83-912.5 4.3 2.5 n-Butylbenzene ND ug/L 11/26/19 21:22 104-51-81.2 0.88 2.5 sec-Butylbenzene ND ug/L 11/26/19 21:22 135-98-81.2 0.62 2.5 tert-Butylbenzene ND ug/L 11/26/19 21:22 98-06-61.2 0.62 2.5 Carbon tetrachloride ND ug/L 11/26/19 21:22 56-23-51.2 0.58 2.5 Chlorobenzene ND ug/L 11/26/19 21:22 108-90-71.2 0.56 2.5 Chloroethane ND ug/L 11/26/19 21:22 75-00-32.5 1.5 2.5 Chloroform ND ug/L 11/26/19 21:22 67-66-31.2 0.88 2.5 Chloromethane ND ug/L 11/26/19 21:22 74-87-32.5 1.0 2.5 2-Chlorotoluene ND ug/L 11/26/19 21:22 95-49-81.2 0.52 2.5 4-Chlorotoluene ND ug/L 11/26/19 21:22 106-43-41.2 0.52 2.5 1,2-Dibromo-3-chloropropane ND ug/L 11/26/19 21:22 96-12-82.5 0.96 2.5 Dibromochloromethane ND ug/L 11/26/19 21:22 124-48-11.2 1.0 2.5 1,2-Dibromoethane (EDB)ND ug/L 11/26/19 21:22 106-93-41.2 0.58 2.5 Dibromomethane ND ug/L 11/26/19 21:22 74-95-31.2 0.78 2.5 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/27/2019 03:17 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 12 of 28 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92454546 Triangle Texaco Sample:MW-10 Lab ID:92454546006 Collected:11/19/19 11:10 Received:11/20/19 08:57 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B6200B MSV 1,2-Dichlorobenzene ND ug/L 11/26/19 21:22 95-50-11.2 0.60 2.5 1,3-Dichlorobenzene ND ug/L 11/26/19 21:22 541-73-11.2 0.62 2.5 1,4-Dichlorobenzene ND ug/L 11/26/19 21:22 106-46-71.2 0.62 2.5 Dichlorodifluoromethane ND ug/L 11/26/19 21:22 75-71-81.2 0.71 2.5 1,1-Dichloroethane ND ug/L 11/26/19 21:22 75-34-31.2 0.61 2.5 1,2-Dichloroethane ND ug/L 11/26/19 21:22 107-06-21.2 0.66 2.5 1,1-Dichloroethene ND ug/L 11/26/19 21:22 75-35-41.2 0.54 2.5 cis-1,2-Dichloroethene ND ug/L 11/26/19 21:22 156-59-21.2 0.52 2.5 trans-1,2-Dichloroethene ND ug/L 11/26/19 21:22 156-60-51.2 0.64 2.5 1,2-Dichloropropane ND ug/L 11/26/19 21:22 78-87-51.2 0.46 2.5 1,3-Dichloropropane ND ug/L 11/26/19 21:22 142-28-91.2 0.85 2.5 2,2-Dichloropropane ND ug/L 11/26/19 21:22 594-20-71.2 0.70 2.5 1,1-Dichloropropene ND ug/L 11/26/19 21:22 563-58-61.2 0.87 2.5 cis-1,3-Dichloropropene ND ug/L 11/26/19 21:22 10061-01-51.2 0.89 2.5 trans-1,3-Dichloropropene ND ug/L 11/26/19 21:22 10061-02-61.2 0.98 2.5 Diisopropyl ether ND ug/L 11/26/19 21:22 108-20-31.2 0.84 2.5 Ethylbenzene 123 ug/L 11/26/19 21:22 100-41-41.2 0.60 2.5 Hexachloro-1,3-butadiene ND ug/L 11/26/19 21:22 87-68-35.0 3.0 2.5 Isopropylbenzene (Cumene)12.0 ug/L 11/26/19 21:22 98-82-81.2 0.60 2.5 Methylene Chloride ND ug/L 11/26/19 21:22 75-09-25.0 3.8 2.5 Methyl-tert-butyl ether 104 ug/L 11/26/19 21:22 1634-04-41.2 1.1 2.5 Naphthalene 35.8 ug/L 11/26/19 21:22 91-20-35.0 1.6 2.5 n-Propylbenzene 19.6 ug/L 11/26/19 21:22 103-65-11.2 0.60 2.5 Styrene ND ug/L 11/26/19 21:22 100-42-51.2 0.64 2.5 1,1,1,2-Tetrachloroethane ND ug/L 11/26/19 21:22 630-20-61.2 1.1 2.5 1,1,2,2-Tetrachloroethane ND ug/L 11/26/19 21:22 79-34-51.2 0.48 2.5 Tetrachloroethene ND ug/L 11/26/19 21:22 127-18-41.2 0.58 2.5 Toluene 15.0 ug/L 11/26/19 21:22 108-88-31.2 0.57 2.5 1,2,3-Trichlorobenzene ND ug/L 11/26/19 21:22 87-61-65.0 2.0 2.5 1,2,4-Trichlorobenzene ND ug/L 11/26/19 21:22 120-82-15.0 1.1 2.5 1,1,1-Trichloroethane ND ug/L 11/26/19 21:22 71-55-61.2 0.70 2.5 1,1,2-Trichloroethane ND ug/L 11/26/19 21:22 79-00-51.2 0.58 2.5 Trichloroethene ND ug/L 11/26/19 21:22 79-01-61.2 0.58 2.5 Trichlorofluoromethane ND ug/L 11/26/19 21:22 75-69-42.5 0.84 2.5 1,2,3-Trichloropropane ND ug/L 11/26/19 21:22 96-18-41.2 0.68 2.5 1,2,4-Trimethylbenzene 23.1 ug/L 11/26/19 21:22 95-63-61.2 0.48 2.5 1,3,5-Trimethylbenzene 15.9 ug/L 11/26/19 21:22 108-67-81.2 0.57 2.5 Vinyl chloride ND ug/L 11/26/19 21:22 75-01-42.5 1.0 2.5 m&p-Xylene 175 ug/L 11/26/19 21:22 179601-23-12.5 1.1 2.5 o-Xylene 9.6 ug/L 11/26/19 21:22 95-47-61.2 0.59 2.5 Surrogates 1,2-Dichloroethane-d4 (S)91 %11/26/19 21:22 17060-07-0 D370-130 2.5 4-Bromofluorobenzene (S)97 %11/26/19 21:22 460-00-470-130 2.5 Toluene-d8 (S)99 %11/26/19 21:22 2037-26-570-130 2.5 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/27/2019 03:17 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 13 of 28 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92454546 Triangle Texaco 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: 511382 SM 6200B SM 6200B 6200B MSV Associated Lab Samples:92454546001, 92454546002, 92454546005 Parameter Units Blank Result Reporting Limit Qualifiers METHOD BLANK:2743317 Associated Lab Samples:92454546001, 92454546002, 92454546005 Matrix:Water AnalyzedMDL 1,1,1,2-Tetrachloroethane ug/L ND 0.50 11/23/19 10:310.42 1,1,1-Trichloroethane ug/L ND 0.50 11/23/19 10:310.28 1,1,2,2-Tetrachloroethane ug/L ND 0.50 11/23/19 10:310.19 1,1,2-Trichloroethane ug/L ND 0.50 11/23/19 10:310.23 1,1-Dichloroethane ug/L ND 0.50 11/23/19 10:310.24 1,1-Dichloroethene ug/L ND 0.50 11/23/19 10:310.22 1,1-Dichloropropene ug/L ND 0.50 11/23/19 10:310.35 1,2,3-Trichlorobenzene ug/L ND 2.0 11/23/19 10:310.78 1,2,3-Trichloropropane ug/L ND 0.50 11/23/19 10:310.27 1,2,4-Trichlorobenzene ug/L ND 2.0 11/23/19 10:310.44 1,2,4-Trimethylbenzene ug/L ND 0.50 11/23/19 10:310.19 1,2-Dibromo-3-chloropropane ug/L ND 1.0 11/23/19 10:310.38 1,2-Dibromoethane (EDB)ug/L ND 0.50 11/23/19 10:310.23 1,2-Dichlorobenzene ug/L ND 0.50 11/23/19 10:310.24 1,2-Dichloroethane ug/L ND 0.50 11/23/19 10:310.26 1,2-Dichloropropane ug/L ND 0.50 11/23/19 10:310.18 1,3,5-Trimethylbenzene ug/L ND 0.50 11/23/19 10:310.23 1,3-Dichlorobenzene ug/L ND 0.50 11/23/19 10:310.25 1,3-Dichloropropane ug/L ND 0.50 11/23/19 10:310.34 1,4-Dichlorobenzene ug/L ND 0.50 11/23/19 10:310.25 2,2-Dichloropropane ug/L ND 0.50 11/23/19 10:310.28 2-Chlorotoluene ug/L ND 0.50 11/23/19 10:310.21 4-Chlorotoluene ug/L ND 0.50 11/23/19 10:310.21 Benzene ug/L ND 0.50 11/23/19 10:310.24 Bromobenzene ug/L ND 0.50 11/23/19 10:310.22 Bromochloromethane ug/L ND 0.50 11/23/19 10:310.26 Bromodichloromethane ug/L ND 0.50 11/23/19 10:310.18 Bromoform ug/L ND 0.50 11/23/19 10:310.40 Bromomethane ug/L ND 5.0 11/23/19 10:311.7 Carbon tetrachloride ug/L ND 0.50 11/23/19 10:310.23 Chlorobenzene ug/L ND 0.50 11/23/19 10:310.22 Chloroethane ug/L ND 1.0 11/23/19 10:310.58 Chloroform ug/L ND 0.50 11/23/19 10:310.35 Chloromethane ug/L ND 1.0 11/23/19 10:310.42 cis-1,2-Dichloroethene ug/L ND 0.50 11/23/19 10:310.21 cis-1,3-Dichloropropene ug/L ND 0.50 11/23/19 10:310.36 Dibromochloromethane ug/L ND 0.50 11/23/19 10:310.40 Dibromomethane ug/L ND 0.50 11/23/19 10:310.31 Dichlorodifluoromethane ug/L ND 0.50 11/23/19 10:310.28 Diisopropyl ether ug/L ND 0.50 11/23/19 10:310.33 Ethylbenzene ug/L ND 0.50 11/23/19 10:310.24 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/27/2019 03:17 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 14 of 28 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92454546 Triangle Texaco 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:2743317 Associated Lab Samples:92454546001, 92454546002, 92454546005 Matrix:Water AnalyzedMDL Hexachloro-1,3-butadiene ug/L 1.3J 2.0 11/23/19 10:311.2 Isopropylbenzene (Cumene)ug/L ND 0.50 11/23/19 10:310.24 m&p-Xylene ug/L ND 1.0 11/23/19 10:310.44 Methyl-tert-butyl ether ug/L ND 0.50 11/23/19 10:310.44 Methylene Chloride ug/L ND 2.0 11/23/19 10:311.5 n-Butylbenzene ug/L ND 0.50 11/23/19 10:310.35 n-Propylbenzene ug/L ND 0.50 11/23/19 10:310.24 Naphthalene ug/L ND 2.0 11/23/19 10:310.66 o-Xylene ug/L ND 0.50 11/23/19 10:310.24 sec-Butylbenzene ug/L ND 0.50 11/23/19 10:310.25 Styrene ug/L ND 0.50 11/23/19 10:310.26 tert-Butylbenzene ug/L ND 0.50 11/23/19 10:310.25 Tetrachloroethene ug/L ND 0.50 11/23/19 10:310.23 Toluene ug/L ND 0.50 11/23/19 10:310.23 trans-1,2-Dichloroethene ug/L ND 0.50 11/23/19 10:310.26 trans-1,3-Dichloropropene ug/L ND 0.50 11/23/19 10:310.39 Trichloroethene ug/L ND 0.50 11/23/19 10:310.23 Trichlorofluoromethane ug/L ND 1.0 11/23/19 10:310.34 Vinyl chloride ug/L ND 1.0 11/23/19 10:310.41 1,2-Dichloroethane-d4 (S)%104 70-130 11/23/19 10:31 4-Bromofluorobenzene (S)%97 70-130 11/23/19 10:31 Toluene-d8 (S)%99 70-130 11/23/19 10:31 Parameter Units LCS Result % Rec Limits Qualifiers% RecConc. 2743318LABORATORY CONTROL SAMPLE: LCSSpike 1,1,1,2-Tetrachloroethane ug/L 53.350 107 60-140 1,1,1-Trichloroethane ug/L 49.250 98 60-140 1,1,2,2-Tetrachloroethane ug/L 52.650 105 60-140 1,1,2-Trichloroethane ug/L 51.250 102 60-140 1,1-Dichloroethane ug/L 47.650 95 60-140 1,1-Dichloroethene ug/L 48.250 96 60-140 1,1-Dichloropropene ug/L 51.950 104 60-140 1,2,3-Trichlorobenzene ug/L 48.050 96 60-140 1,2,3-Trichloropropane ug/L 54.650 109 60-140 1,2,4-Trichlorobenzene ug/L 48.850 98 60-140 1,2,4-Trimethylbenzene ug/L 52.250 104 60-140 1,2-Dibromo-3-chloropropane ug/L 53.850 108 60-140 1,2-Dibromoethane (EDB)ug/L 53.750 107 60-140 1,2-Dichlorobenzene ug/L 49.950 100 60-140 1,2-Dichloroethane ug/L 46.450 93 60-140 1,2-Dichloropropane ug/L 49.950 100 60-140 1,3,5-Trimethylbenzene ug/L 51.850 104 60-140 1,3-Dichlorobenzene ug/L 49.850 100 60-140 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/27/2019 03:17 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 15 of 28 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92454546 Triangle Texaco 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. 2743318LABORATORY CONTROL SAMPLE: LCSSpike 1,3-Dichloropropane ug/L 53.150 106 60-140 1,4-Dichlorobenzene ug/L 47.950 96 60-140 2,2-Dichloropropane ug/L 50.850 102 60-140 2-Chlorotoluene ug/L 50.450 101 60-140 4-Chlorotoluene ug/L 52.150 104 60-140 Benzene ug/L 48.650 97 60-140 Bromobenzene ug/L 52.350 105 60-140 Bromochloromethane ug/L 50.250 100 60-140 Bromodichloromethane ug/L 50.250 100 60-140 Bromoform ug/L 49.650 99 60-140 Bromomethane ug/L 42.450 85 60-140 Carbon tetrachloride ug/L 50.550 101 60-140 Chlorobenzene ug/L 49.050 98 60-140 Chloroethane ug/L 45.050 90 60-140 Chloroform ug/L 48.750 97 60-140 Chloromethane ug/L 45.250 90 60-140 cis-1,2-Dichloroethene ug/L 47.650 95 60-140 cis-1,3-Dichloropropene ug/L 54.050 108 60-140 Dibromochloromethane ug/L 52.550 105 60-140 Dibromomethane ug/L 49.850 100 60-140 Dichlorodifluoromethane ug/L 48.150 96 60-140 Diisopropyl ether ug/L 49.550 99 60-140 Ethylbenzene ug/L 50.150 100 60-140 Hexachloro-1,3-butadiene ug/L 46.550 93 60-140 Isopropylbenzene (Cumene)ug/L 50.050 100 60-140 m&p-Xylene ug/L 99.7100 100 60-140 Methyl-tert-butyl ether ug/L 49.950 100 60-140 Methylene Chloride ug/L 45.750 91 60-140 n-Butylbenzene ug/L 49.750 99 60-140 n-Propylbenzene ug/L 50.050 100 60-140 Naphthalene ug/L 51.250 102 60-140 o-Xylene ug/L 50.050 100 60-140 sec-Butylbenzene ug/L 49.050 98 60-140 Styrene ug/L 52.950 106 60-140 tert-Butylbenzene ug/L 42.350 85 60-140 Tetrachloroethene ug/L 49.750 99 60-140 Toluene ug/L 48.250 96 60-140 trans-1,2-Dichloroethene ug/L 48.150 96 60-140 trans-1,3-Dichloropropene ug/L 53.250 106 60-140 Trichloroethene ug/L 48.650 97 60-140 Trichlorofluoromethane ug/L 48.250 96 60-140 Vinyl chloride ug/L 52.550 105 60-140 1,2-Dichloroethane-d4 (S)%100 70-130 4-Bromofluorobenzene (S)%98 70-130 Toluene-d8 (S)%99 70-130 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/27/2019 03:17 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 16 of 28 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92454546 Triangle Texaco 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 MS Result % Rec Limits Qual% RecConc. 2745610MATRIX SPIKE & MATRIX SPIKE DUPLICATE: MSSpike Result 92454543004 2745611 MSD Result MSD % Rec RPD RPD Max MSDMS Spike Conc. 1,1,1,2-Tetrachloroethane ug/L 20 93 60-14099 7 3020ND18.5 19.9 1,1,1-Trichloroethane ug/L 20 88 60-14097 10 3020ND17.6 19.3 1,1,2,2-Tetrachloroethane ug/L 20 94 60-140100 7 3020ND18.8 20.0 1,1,2-Trichloroethane ug/L 20 96 60-140102 7 3020ND19.1 20.5 1,1-Dichloroethane ug/L 20 91 60-140102 11 3020ND18.2 20.3 1,1-Dichloroethene ug/L 20 85 60-14095 11 3020ND17.0 19.1 1,1-Dichloropropene ug/L 20 94 60-140106 12 3020ND18.8 21.1 1,2,3-Trichlorobenzene ug/L 20 90 60-14098 8 3020ND18.1 19.7 1,2,3-Trichloropropane ug/L 20 93 60-14096 3 3020ND18.7 19.3 1,2,4-Trichlorobenzene ug/L 20 86 60-14097 12 3020ND17.2 19.4 1,2,4-Trimethylbenzene ug/L 20 89 60-14097 9 3020ND17.7 19.5 1,2-Dibromo-3- chloropropane ug/L 20 101 60-140112 11 3020ND20.1 22.4 1,2-Dibromoethane (EDB)ug/L 20 95 60-140104 8 3020ND19.1 20.7 1,2-Dichlorobenzene ug/L 20 91 60-14098 7 3020ND18.3 19.6 1,2-Dichloroethane ug/L 20 76 60-14084 10 3020ND15.2 16.8 1,2-Dichloropropane ug/L 20 95 60-140104 10 3020ND18.9 20.9 1,3,5-Trimethylbenzene ug/L 20 87 60-14097 10 3020ND17.4 19.3 1,3-Dichlorobenzene ug/L 20 87 60-14095 10 3020ND17.3 19.1 1,3-Dichloropropane ug/L 20 96 60-140104 8 3020ND19.1 20.7 1,4-Dichlorobenzene ug/L 20 87 60-14097 11 3020ND17.4 19.4 2,2-Dichloropropane ug/L 20 76 60-14084 9 3020ND15.3 16.7 2-Chlorotoluene ug/L 20 87 60-14096 10 3020ND17.3 19.2 4-Chlorotoluene ug/L 20 87 60-14096 9 3020ND17.4 19.1 Benzene ug/L 20 95 60-140103 8 3020ND19.0 20.7 Bromobenzene ug/L 20 93 60-140103 9 3020ND18.7 20.5 Bromochloromethane ug/L 20 96 60-140104 9 3020ND19.1 20.9 Bromodichloromethane ug/L 20 89 60-14097 9 3020ND17.8 19.5 Bromoform ug/L 20 96 60-140103 7 3020ND19.2 20.6 Bromomethane ug/L 20 67 60-14081 18 3020ND13.5 16.2 Carbon tetrachloride ug/L 20 91 60-14099 9 3020ND18.1 19.8 Chlorobenzene ug/L 20 89 60-14098 10 3020ND17.7 19.6 Chloroethane ug/L 20 77 60-14081 5 3020ND15.5 16.2 Chloroform ug/L 20 90 60-14094 5 3020ND17.9 18.9 Chloromethane ug/L 20 86 60-14093 8 3020ND17.2 18.7 cis-1,2-Dichloroethene ug/L 20 87 60-14096 10 3020ND17.4 19.3 cis-1,3-Dichloropropene ug/L 20 92 60-140102 10 3020ND18.4 20.3 Dibromochloromethane ug/L 20 91 60-14099 8 3020ND18.3 19.7 Dibromomethane ug/L 20 95 60-140103 9 3020ND18.9 20.6 Dichlorodifluoromethane ug/L 20 94 60-140106 12 3020ND18.8 21.3 Diisopropyl ether ug/L 20 92 60-140102 10 3020ND18.5 20.4 Ethylbenzene ug/L 20 87 60-14094 8 3020ND17.4 18.8 Hexachloro-1,3-butadiene ug/L 20 79 60-14088 11 3020ND15.7 17.6 Isopropylbenzene(Cumene)ug/L 20 89 60-14099 10 3020ND17.9 19.8 m&p-Xylene ug/L 40 88 60-14098 10 3040ND35.3 39.1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/27/2019 03:17 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 17 of 28 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92454546 Triangle Texaco 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 MS Result % Rec Limits Qual% RecConc. 2745610MATRIX SPIKE & MATRIX SPIKE DUPLICATE: MSSpike Result 92454543004 2745611 MSD Result MSD % Rec RPD RPD Max MSDMS Spike Conc. Methyl-tert-butyl ether ug/L 20 89 60-140100 11 3020ND17.9 19.9 Methylene Chloride ug/L 20 80 60-14087 9 3020ND15.9 17.4 n-Butylbenzene ug/L 20 83 60-14093 10 3020ND16.7 18.5 n-Propylbenzene ug/L 20 85 60-14094 10 3020ND17.0 18.8 Naphthalene ug/L 20 98 60-140102 4 3020ND19.6 20.5 o-Xylene ug/L 20 92 60-140100 9 3020ND18.3 20.0 sec-Butylbenzene ug/L 20 87 60-14096 10 3020ND17.4 19.1 Styrene ug/L 20 90 60-14092 3 3020ND17.9 18.4 tert-Butylbenzene ug/L 20 74 60-14080 7 3020ND14.8 16.0 Tetrachloroethene ug/L 20 85 60-14097 13 3020ND17.0 19.3 Toluene ug/L 20 89 60-14097 9 3020ND17.8 19.5 trans-1,2-Dichloroethene ug/L 20 91 60-140101 11 3020ND18.2 20.2 trans-1,3-Dichloropropene ug/L 20 91 60-14096 5 3020ND18.3 19.3 Trichloroethene ug/L 20 92 60-140100 9 3020ND18.3 20.0 Trichlorofluoromethane ug/L 20 87 60-14098 12 3020ND17.4 19.6 Vinyl chloride ug/L 20 101 60-140111 10 3020ND20.1 22.2 1,2-Dichloroethane-d4 (S)%90 70-13091 4-Bromofluorobenzene (S)%97 70-13095 Toluene-d8 (S)%99 70-13098 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/27/2019 03:17 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 18 of 28 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92454546 Triangle Texaco 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: 511881 SM 6200B SM 6200B 6200B MSV Associated Lab Samples:92454546003, 92454546004, 92454546006 Parameter Units Blank Result Reporting Limit Qualifiers METHOD BLANK:2745290 Associated Lab Samples:92454546003, 92454546004, 92454546006 Matrix:Water AnalyzedMDL 1,1,1,2-Tetrachloroethane ug/L ND 0.50 11/26/19 17:090.42 1,1,1-Trichloroethane ug/L ND 0.50 11/26/19 17:090.28 1,1,2,2-Tetrachloroethane ug/L ND 0.50 11/26/19 17:090.19 1,1,2-Trichloroethane ug/L ND 0.50 11/26/19 17:090.23 1,1-Dichloroethane ug/L ND 0.50 11/26/19 17:090.24 1,1-Dichloroethene ug/L ND 0.50 11/26/19 17:090.22 1,1-Dichloropropene ug/L ND 0.50 11/26/19 17:090.35 1,2,3-Trichlorobenzene ug/L ND 2.0 11/26/19 17:090.78 1,2,3-Trichloropropane ug/L ND 0.50 11/26/19 17:090.27 1,2,4-Trichlorobenzene ug/L ND 2.0 11/26/19 17:090.44 1,2,4-Trimethylbenzene ug/L ND 0.50 11/26/19 17:090.19 1,2-Dibromo-3-chloropropane ug/L ND 1.0 11/26/19 17:090.38 1,2-Dibromoethane (EDB)ug/L ND 0.50 11/26/19 17:090.23 1,2-Dichlorobenzene ug/L ND 0.50 11/26/19 17:090.24 1,2-Dichloroethane ug/L ND 0.50 11/26/19 17:090.26 1,2-Dichloropropane ug/L ND 0.50 11/26/19 17:090.18 1,3,5-Trimethylbenzene ug/L ND 0.50 11/26/19 17:090.23 1,3-Dichlorobenzene ug/L ND 0.50 11/26/19 17:090.25 1,3-Dichloropropane ug/L ND 0.50 11/26/19 17:090.34 1,4-Dichlorobenzene ug/L ND 0.50 11/26/19 17:090.25 2,2-Dichloropropane ug/L ND 0.50 11/26/19 17:090.28 2-Chlorotoluene ug/L ND 0.50 11/26/19 17:090.21 4-Chlorotoluene ug/L ND 0.50 11/26/19 17:090.21 Benzene ug/L ND 0.50 11/26/19 17:090.24 Bromobenzene ug/L ND 0.50 11/26/19 17:090.22 Bromochloromethane ug/L ND 0.50 11/26/19 17:090.26 Bromodichloromethane ug/L ND 0.50 11/26/19 17:090.18 Bromoform ug/L ND 0.50 11/26/19 17:090.40 Bromomethane ug/L ND 5.0 11/26/19 17:091.7 Carbon tetrachloride ug/L ND 0.50 11/26/19 17:090.23 Chlorobenzene ug/L ND 0.50 11/26/19 17:090.22 Chloroethane ug/L ND 1.0 11/26/19 17:090.58 Chloroform ug/L ND 0.50 11/26/19 17:090.35 Chloromethane ug/L ND 1.0 11/26/19 17:090.42 cis-1,2-Dichloroethene ug/L ND 0.50 11/26/19 17:090.21 cis-1,3-Dichloropropene ug/L ND 0.50 11/26/19 17:090.36 Dibromochloromethane ug/L ND 0.50 11/26/19 17:090.40 Dibromomethane ug/L ND 0.50 11/26/19 17:090.31 Dichlorodifluoromethane ug/L ND 0.50 11/26/19 17:090.28 Diisopropyl ether ug/L ND 0.50 11/26/19 17:090.33 Ethylbenzene ug/L ND 0.50 11/26/19 17:090.24 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/27/2019 03:17 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 19 of 28 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92454546 Triangle Texaco 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:2745290 Associated Lab Samples:92454546003, 92454546004, 92454546006 Matrix:Water AnalyzedMDL Hexachloro-1,3-butadiene ug/L ND 2.0 11/26/19 17:091.2 Isopropylbenzene (Cumene)ug/L ND 0.50 11/26/19 17:090.24 m&p-Xylene ug/L ND 1.0 11/26/19 17:090.44 Methyl-tert-butyl ether ug/L ND 0.50 11/26/19 17:090.44 Methylene Chloride ug/L 1.7J 2.0 11/26/19 17:091.5 n-Butylbenzene ug/L ND 0.50 11/26/19 17:090.35 n-Propylbenzene ug/L ND 0.50 11/26/19 17:090.24 Naphthalene ug/L ND 2.0 11/26/19 17:090.66 o-Xylene ug/L ND 0.50 11/26/19 17:090.24 sec-Butylbenzene ug/L ND 0.50 11/26/19 17:090.25 Styrene ug/L ND 0.50 11/26/19 17:090.26 tert-Butylbenzene ug/L ND 0.50 11/26/19 17:090.25 Tetrachloroethene ug/L ND 0.50 11/26/19 17:090.23 Toluene ug/L ND 0.50 11/26/19 17:090.23 trans-1,2-Dichloroethene ug/L ND 0.50 11/26/19 17:090.26 trans-1,3-Dichloropropene ug/L ND 0.50 11/26/19 17:090.39 Trichloroethene ug/L ND 0.50 11/26/19 17:090.23 Trichlorofluoromethane ug/L ND 1.0 11/26/19 17:090.34 Vinyl chloride ug/L ND 1.0 11/26/19 17:090.41 1,2-Dichloroethane-d4 (S)%88 70-130 11/26/19 17:09 4-Bromofluorobenzene (S)%97 70-130 11/26/19 17:09 Toluene-d8 (S)%100 70-130 11/26/19 17:09 Parameter Units LCS Result % Rec Limits Qualifiers% RecConc. 2745291LABORATORY CONTROL SAMPLE: LCSSpike 1,1,1,2-Tetrachloroethane ug/L 51.950 104 60-140 1,1,1-Trichloroethane ug/L 47.550 95 60-140 1,1,2,2-Tetrachloroethane ug/L 49.650 99 60-140 1,1,2-Trichloroethane ug/L 50.350 101 60-140 1,1-Dichloroethane ug/L 49.350 99 60-140 1,1-Dichloroethene ug/L 46.850 94 60-140 1,1-Dichloropropene ug/L 52.850 106 60-140 1,2,3-Trichlorobenzene ug/L 55.850 112 60-140 1,2,3-Trichloropropane ug/L 48.950 98 60-140 1,2,4-Trichlorobenzene ug/L 54.150 108 60-140 1,2,4-Trimethylbenzene ug/L 49.750 99 60-140 1,2-Dibromo-3-chloropropane ug/L 53.850 108 60-140 1,2-Dibromoethane (EDB)ug/L 51.950 104 60-140 1,2-Dichlorobenzene ug/L 50.550 101 60-140 1,2-Dichloroethane ug/L 40.650 81 60-140 1,2-Dichloropropane ug/L 50.550 101 60-140 1,3,5-Trimethylbenzene ug/L 50.750 101 60-140 1,3-Dichlorobenzene ug/L 51.850 104 60-140 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/27/2019 03:17 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 20 of 28 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92454546 Triangle Texaco 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. 2745291LABORATORY CONTROL SAMPLE: LCSSpike 1,3-Dichloropropane ug/L 51.650 103 60-140 1,4-Dichlorobenzene ug/L 48.150 96 60-140 2,2-Dichloropropane ug/L 48.950 98 60-140 2-Chlorotoluene ug/L 49.250 98 60-140 4-Chlorotoluene ug/L 49.150 98 60-140 Benzene ug/L 50.050 100 60-140 Bromobenzene ug/L 52.350 105 60-140 Bromochloromethane ug/L 52.250 104 60-140 Bromodichloromethane ug/L 48.450 97 60-140 Bromoform ug/L 53.050 106 60-140 Bromomethane ug/L 37.950 76 60-140 Carbon tetrachloride ug/L 47.950 96 60-140 Chlorobenzene ug/L 48.350 97 60-140 Chloroethane ug/L 33.650 67 60-140 Chloroform ug/L 48.150 96 60-140 Chloromethane ug/L 47.250 94 60-140 cis-1,2-Dichloroethene ug/L 47.650 95 60-140 cis-1,3-Dichloropropene ug/L 52.850 106 60-140 Dibromochloromethane ug/L 50.350 101 60-140 Dibromomethane ug/L 50.850 102 60-140 Dichlorodifluoromethane ug/L 58.350 117 60-140 Diisopropyl ether ug/L 51.750 103 60-140 Ethylbenzene ug/L 46.550 93 60-140 Hexachloro-1,3-butadiene ug/L 53.950 108 60-140 Isopropylbenzene (Cumene)ug/L 49.750 99 60-140 m&p-Xylene ug/L 95.2100 95 60-140 Methyl-tert-butyl ether ug/L 49.450 99 60-140 Methylene Chloride ug/L 44.850 90 60-140 n-Butylbenzene ug/L 51.550 103 60-140 n-Propylbenzene ug/L 49.150 98 60-140 Naphthalene ug/L 53.050 106 60-140 o-Xylene ug/L 49.350 99 60-140 sec-Butylbenzene ug/L 51.250 102 60-140 Styrene ug/L 50.950 102 60-140 tert-Butylbenzene ug/L 41.150 82 60-140 Tetrachloroethene ug/L 48.250 96 60-140 Toluene ug/L 47.050 94 60-140 trans-1,2-Dichloroethene ug/L 50.050 100 60-140 trans-1,3-Dichloropropene ug/L 51.150 102 60-140 Trichloroethene ug/L 48.950 98 60-140 Trichlorofluoromethane ug/L 45.350 91 60-140 Vinyl chloride ug/L 55.950 112 60-140 1,2-Dichloroethane-d4 (S)%93 70-130 4-Bromofluorobenzene (S)%96 70-130 Toluene-d8 (S)%99 70-130 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/27/2019 03:17 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 21 of 28 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92454546 Triangle Texaco 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 MS Result % Rec Limits Qual% RecConc. 2745292MATRIX SPIKE & MATRIX SPIKE DUPLICATE: MSSpike Result 92454551001 2745293 MSD Result MSD % Rec RPD RPD Max MSDMS Spike Conc. 1,1,1,2-Tetrachloroethane ug/L 500 104 60-140104 0 30500ND519520 1,1,1-Trichloroethane ug/L 500 103 60-140102 2 30500ND517508 1,1,2,2-Tetrachloroethane ug/L 500 105 60-140104 1 30500ND524521 1,1,2-Trichloroethane ug/L 500 108 60-140109 0 30500ND542544 1,1-Dichloroethane ug/L 500 106 60-140107 1 30500ND532535 1,1-Dichloroethene ug/L 500 103 60-140102 2 30500ND517508 1,1-Dichloropropene ug/L 500 112 60-140113 0 30500ND562564 1,2,3-Trichlorobenzene ug/L 500 110 60-140113 3 30500ND549567 1,2,3-Trichloropropane ug/L 500 110 60-140109 1 30500ND549544 1,2,4-Trichlorobenzene ug/L 500 109 60-140109 0 30500ND546546 1,2,4-Trimethylbenzene ug/L 500 130 60-14097 5 30500295036003440 1,2-Dibromo-3- chloropropane ug/L 500 114 60-140115 1 30500ND569575 1,2-Dibromoethane (EDB)ug/L 500 105 60-140107 2 30500ND526536 1,2-Dichlorobenzene ug/L 500 106 60-140107 1 30500ND532537 1,2-Dichloroethane ug/L 500 88 60-14087 1 30500ND442436 1,2-Dichloropropane ug/L 500 112 60-140110 2 30500ND559550 1,3,5-Trimethylbenzene ug/L 500 116 60-140106 4 3050075413401280 1,3-Dichlorobenzene ug/L 500 105 60-140106 1 30500ND526530 1,3-Dichloropropane ug/L 500 107 60-140108 1 30500ND534540 1,4-Dichlorobenzene ug/L 500 106 60-140106 1 30500ND528532 2,2-Dichloropropane ug/L 500 91 60-14089 2 30500ND455444 2-Chlorotoluene ug/L M150017560-140171 3 30500ND875853 4-Chlorotoluene ug/L 500 104 60-140105 1 30500ND518525 Benzene ug/L 500 114 60-140110 3 30500131703680 Bromobenzene ug/L 500 109 60-140112 3 30500ND543558 Bromochloromethane ug/L 500 113 60-140109 3 30500ND564546 Bromodichloromethane ug/L 500 102 60-140102 1 30500ND512508 Bromoform ug/L 500 105 60-140104 0 30500ND523522 Bromomethane ug/L 500 69 60-14073 6 30500ND344365 Carbon tetrachloride ug/L 500 106 60-140105 2 30500ND531523 Chlorobenzene ug/L 500 104 60-140105 1 30500ND519523 Chloroethane ug/L 500 93 60-14090 4 30500ND464448 Chloroform ug/L 500 101 60-140104 2 30500ND507520 Chloromethane ug/L 500 100 60-140100 1 30500ND501498 cis-1,2-Dichloroethene ug/L 500 104 60-140100 4 30500ND520501 cis-1,3-Dichloropropene ug/L 500 107 60-140108 1 30500ND536540 Dibromochloromethane ug/L 500 103 60-140103 0 30500ND515513 Dibromomethane ug/L 500 109 60-140108 1 30500ND547542 Dichlorodifluoromethane ug/L 500 124 60-140123 1 30500ND618614 Diisopropyl ether ug/L 500 111 60-140107 3 30500ND555536 Ethylbenzene ug/L 500 115 60-14081 6 30500221027902620 Hexachloro-1,3-butadiene ug/L 500 105 60-140109 4 30500ND524545 Isopropylbenzene(Cumene)ug/L 500 105 60-140104 1 30500138661656 m&p-Xylene ug/L 1000 112 60-14085 5 301000427053805120 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/27/2019 03:17 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 22 of 28 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92454546 Triangle Texaco 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 MS Result % Rec Limits Qual% RecConc. 2745292MATRIX SPIKE & MATRIX SPIKE DUPLICATE: MSSpike Result 92454551001 2745293 MSD Result MSD % Rec RPD RPD Max MSDMS Spike Conc. Methyl-tert-butyl ether ug/L 500 107 60-140105 2 3050015.4 552 541 Methylene Chloride ug/L 500 92 60-14089 3 30500ND493481 n-Butylbenzene ug/L 500 118 60-140118 0 30500ND589592 n-Propylbenzene ug/L 500 109 60-140102 4 30500406949916 Naphthalene ug/L 500 121 60-140111 4 3050076413701320 o-Xylene ug/L 500 130 60-14086 6 30500298036303410 sec-Butylbenzene ug/L 500 110 60-140112 1 30500ND552560 Styrene ug/L 500 115 60-140113 1 30500ND574567 tert-Butylbenzene ug/L 500 90 60-14089 1 30500ND451447 Tetrachloroethene ug/L 500 102 60-140104 2 30500ND509520 Toluene ug/L 500 117 60-140100 6 3050089014701390 trans-1,2-Dichloroethene ug/L 500 107 60-140107 0 30500ND536536 trans-1,3-Dichloropropene ug/L 500 104 60-140102 2 30500ND521508 Trichloroethene ug/L 500 107 60-140107 0 30500ND535537 Trichlorofluoromethane ug/L 500 107 60-140107 0 30500ND533534 Vinyl chloride ug/L 500 121 60-140120 1 30500ND606601 1,2-Dichloroethane-d4 (S)%92 70-13090 4-Bromofluorobenzene (S)%93 70-13093 Toluene-d8 (S)%99 70-130100 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/27/2019 03:17 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 23 of 28 #=QL# QUALIFIERS Pace Project No.: Project: 92454546 Triangle Texaco 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. TNTC - Too Numerous To Count 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 - The lowest concentration value that meets project requirements for quantitative data with known precision and bias for a specific analyte in a specific matrix. 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. 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 for each 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 - CharlottePASI-C ANALYTE QUALIFIERS Sample was diluted due to the presence of high levels of non-target analytes or other matrix interference.D3 Matrix spike recovery exceeded QC limits. Batch accepted based on laboratory control sample (LCS) recovery.M1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/27/2019 03:17 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 24 of 28 #=CR# QUALITY CONTROL DATA CROSS REFERENCE TABLE Pace Project No.: Project: 92454546 Triangle Texaco Lab ID Sample ID QC Batch Method QC Batch Analytical Method Analytical Batch 92454546001 511382FBSM 6200B 92454546002 511382MW-1 SM 6200B 92454546003 511881MW-1A SM 6200B 92454546004 511881MW-2 SM 6200B 92454546005 511382MW-8 SM 6200B 92454546006 511881MW-10 SM 6200B REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/27/2019 03:17 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 25 of 28 Page 26 of 28 Page 27 of 28 Page 28 of 28 #=CL# November 07, 2019 LIMS USE: FR - FLORA D'SOUZA LIMS OBJECT ID: 92451814 92451814 Project: Pace Project No.: RE: Flora D'Souza Terracon 2701 Westport Rd Charlotte, NC 28208 Triangle Texaco-Effluent Dear Flora D'Souza: Enclosed are the analytical results for sample(s) received by the laboratory on October 31, 2019. The results relate only to the samples included in this report. Results reported herein conform to the most current, applicable TNI/NELAC standards and the laboratory's Quality Assurance Manual, where applicable, unless otherwise noted in the body of the report. If you have any questions concerning this report, please feel free to contact me. Sincerely, Taylor Ezell taylor.ezell@pacelabs.com Project Manager (704)875-9092 Enclosures REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 1 of 39 #=CP# CERTIFICATIONS Pace Project No.: Project: 92451814 Triangle Texaco-Effluent Charlotte Certification IDs 9800 Kincey Ave. Ste 100, Huntersville, NC 28078 Louisiana/NELAP Certification # LA170028 North Carolina Drinking Water Certification #: 37706 North Carolina Field Services Certification #: 5342 North Carolina Wastewater Certification #: 12 South Carolina Certification #: 99006001 Florida/NELAP Certification #: E87627 Kentucky UST Certification #: 84 Virginia/VELAP Certification #: 460221 Asheville Certification IDs 2225 Riverside Drive, Asheville, NC 28804 Florida/NELAP Certification #: E87648 Massachusetts Certification #: M-NC030 North Carolina Drinking Water Certification #: 37712 North Carolina Wastewater Certification #: 40 South Carolina Certification #: 99030001 Virginia/VELAP Certification #: 460222 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 2 of 39 #=SS# SAMPLE SUMMARY Pace Project No.: Project: 92451814 Triangle Texaco-Effluent Lab ID Sample ID Matrix Date Collected Date Received 92451814001 PIPE 001C Water 10/30/19 14:35 10/31/19 11:55 92451814002 PIPE 001G Water 10/30/19 14:10 10/31/19 11:55 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 3 of 39 #=SA# SAMPLE ANALYTE COUNT Pace Project No.: Project: 92451814 Triangle Texaco-Effluent Lab ID Sample ID Method Analytes Reported LaboratoryAnalysts 92451814001 PIPE 001C EPA 6010D 7 PASI-ASH1 EPA 6020B 1 PASI-AJOR EPA 7470A 1 PASI-ASOO SM 2540D-2011 1 PASI-AJP1 SM 5210B-2011 1 PASI-AJP1 EPA 350.1 Rev 2.0 1993 1 PASI-AGC 92451814002 PIPE 001G EPA 1664B 1 PASI-CHH EPA 8082A 8 PASI-CSEM SM 6200B 63 PASI-CCL SM 4500-H+B-2011 1 PASI-AECH SM 4500-CN-E-2011 1 PASI-ACJH1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 4 of 39 #=HO# SUMMARY OF DETECTION Pace Project No.: Project: 92451814 Triangle Texaco-Effluent Parameters AnalyzedResult Lab Sample ID Report Limit QualifiersUnitsMethod Client Sample ID 92451814001 PIPE 001C Lead 3.0J ug/L 11/06/19 19:095.0EPA 6010D Arsenic 0.64 ug/L 11/01/19 21:560.10EPA 6020B 92451814002 PIPE 001G 1,2,4-Trimethylbenzene 0.36J ug/L 11/05/19 01:530.50SM 6200B pH at 25 Degrees C 8.4 Std. Units 11/03/19 17:06 H30.10SM 4500-H+B-2011 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 5 of 39 #=NA# PROJECT NARRATIVE Pace Project No.: Project: 92451814 Triangle Texaco-Effluent Method: Client:Terracon - Charlotte, NC EPA 1664B Date:November 07, 2019 Description:HEM, Oil and Grease General Information: 1 sample was analyzed for EPA 1664B. All samples were received in acceptable condition with any exceptions noted below or on the chain-of custody and/or the sample condition upon receipt form (SCUR) attached at the end of this report. Hold Time: The samples were analyzed within the method required hold times with any exceptions noted below. Initial Calibrations (including MS Tune as applicable): All criteria were within method requirements with any exceptions noted below. Continuing Calibration: All criteria were within method requirements with any exceptions noted below. Surrogates: All surrogates were within QC limits with any exceptions noted below. Method Blank: All analytes were below the report limit in the method blank, where applicable, with any exceptions noted below. Laboratory Control Spike: All laboratory control spike compounds were within QC limits with any exceptions noted below. Matrix Spikes: All percent recoveries and relative percent differences (RPDs) were within acceptance criteria with any exceptions noted below. Additional Comments: REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 6 of 39 #=NA# PROJECT NARRATIVE Pace Project No.: Project: 92451814 Triangle Texaco-Effluent Method: Client:Terracon - Charlotte, NC EPA 8082A Date:November 07, 2019 Description:8082 GCS PCB RVE General Information: 1 sample was analyzed for EPA 8082A. All samples were received in acceptable condition with any exceptions noted below or on the chain-of custody and/or the sample condition upon receipt form (SCUR) attached at the end of this report. Hold Time: The samples were analyzed within the method required hold times with any exceptions noted below. Sample Preparation: The samples were prepared in accordance with EPA 3510C with any exceptions noted below. Initial Calibrations (including MS Tune as applicable): All criteria were within method requirements with any exceptions noted below. Continuing Calibration: All criteria were within method requirements with any exceptions noted below. Surrogates: All surrogates were within QC limits with any exceptions noted below. QC Batch: 507606 S0: Surrogate recovery outside laboratory control limits. • LCS (Lab ID: 2725054) • Decachlorobiphenyl (S) Method Blank: All analytes were below the report limit in the method blank, where applicable, with any exceptions noted below. Laboratory Control Spike: All laboratory control spike compounds were within QC limits with any exceptions noted below. Matrix Spikes: All percent recoveries and relative percent differences (RPDs) were within acceptance criteria with any exceptions noted below. QC Batch: 507606 A matrix spike and/or matrix spike duplicate (MS/MSD) were performed on the following sample(s): 92451801002 M1: Matrix spike recovery exceeded QC limits. Batch accepted based on laboratory control sample (LCS) recovery. • MS (Lab ID: 2725055) • PCB-1016 (Aroclor 1016) R1: RPD value was outside control limits. • MSD (Lab ID: 2725056) • PCB-1016 (Aroclor 1016) Additional Comments: REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 7 of 39 #=NA# PROJECT NARRATIVE Pace Project No.: Project: 92451814 Triangle Texaco-Effluent Method: Client:Terracon - Charlotte, NC EPA 6010D Date:November 07, 2019 Description:6010 MET ICP General Information: 1 sample was analyzed for EPA 6010D. All samples were received in acceptable condition with any exceptions noted below or on the chain-of custody and/or the sample condition upon receipt form (SCUR) attached at the end of this report. Hold Time: The samples were analyzed within the method required hold times with any exceptions noted below. Sample Preparation: The samples were prepared in accordance with EPA 3010A with any exceptions noted below. Initial Calibrations (including MS Tune as applicable): All criteria were within method requirements with any exceptions noted below. Continuing Calibration: All criteria were within method requirements with any exceptions noted below. Method Blank: All analytes were below the report limit in the method blank, where applicable, with any exceptions noted below. Laboratory Control Spike: All laboratory control spike compounds were within QC limits with any exceptions noted below. Matrix Spikes: All percent recoveries and relative percent differences (RPDs) were within acceptance criteria with any exceptions noted below. Additional Comments: REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 8 of 39 #=NA# PROJECT NARRATIVE Pace Project No.: Project: 92451814 Triangle Texaco-Effluent Method: Client:Terracon - Charlotte, NC EPA 6020B Date:November 07, 2019 Description:6020 MET ICPMS General Information: 1 sample was analyzed for EPA 6020B. All samples were received in acceptable condition with any exceptions noted below or on the chain-of custody and/or the sample condition upon receipt form (SCUR) attached at the end of this report. Hold Time: The samples were analyzed within the method required hold times with any exceptions noted below. Sample Preparation: The samples were prepared in accordance with EPA 3010A with any exceptions noted below. Initial Calibrations (including MS Tune as applicable): All criteria were within method requirements with any exceptions noted below. Continuing Calibration: All criteria were within method requirements with any exceptions noted below. Internal Standards: All internal standards were within QC limits with any exceptions noted below. Method Blank: All analytes were below the report limit in the method blank, where applicable, with any exceptions noted below. Laboratory Control Spike: All laboratory control spike compounds were within QC limits with any exceptions noted below. Matrix Spikes: All percent recoveries and relative percent differences (RPDs) were within acceptance criteria with any exceptions noted below. Additional Comments: REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 9 of 39 #=NA# PROJECT NARRATIVE Pace Project No.: Project: 92451814 Triangle Texaco-Effluent Method: Client:Terracon - Charlotte, NC EPA 7470A Date:November 07, 2019 Description:7470 Mercury General Information: 1 sample was analyzed for EPA 7470A. All samples were received in acceptable condition with any exceptions noted below or on the chain-of custody and/or the sample condition upon receipt form (SCUR) attached at the end of this report. Hold Time: The samples were analyzed within the method required hold times with any exceptions noted below. Sample Preparation: The samples were prepared in accordance with EPA 7470A with any exceptions noted below. Initial Calibrations (including MS Tune as applicable): All criteria were within method requirements with any exceptions noted below. Continuing Calibration: All criteria were within method requirements with any exceptions noted below. Method Blank: All analytes were below the report limit in the method blank, where applicable, with any exceptions noted below. Laboratory Control Spike: All laboratory control spike compounds were within QC limits with any exceptions noted below. Matrix Spikes: All percent recoveries and relative percent differences (RPDs) were within acceptance criteria with any exceptions noted below. Additional Comments: REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 10 of 39 #=NA# PROJECT NARRATIVE Pace Project No.: Project: 92451814 Triangle Texaco-Effluent Method: Client:Terracon - Charlotte, NC SM 6200B Date:November 07, 2019 Description:6200B MSV General Information: 1 sample was analyzed for SM 6200B. All samples were received in acceptable condition with any exceptions noted below or on the chain-of custody and/or the sample condition upon receipt form (SCUR) attached at the end of this report. Hold Time: The samples were analyzed within the method required hold times with any exceptions noted below. Initial Calibrations (including MS Tune as applicable): All criteria were within method requirements with any exceptions noted below. Continuing Calibration: All criteria were within method requirements with any exceptions noted below. Internal Standards: All internal standards were within QC limits with any exceptions noted below. Surrogates: All surrogates were within QC limits with any exceptions noted below. Method Blank: All analytes were below the report limit in the method blank, where applicable, with any exceptions noted below. Laboratory Control Spike: All laboratory control spike compounds were within QC limits with any exceptions noted below. Matrix Spikes: All percent recoveries and relative percent differences (RPDs) were within acceptance criteria with any exceptions noted below. Additional Comments: REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 11 of 39 #=NA# PROJECT NARRATIVE Pace Project No.: Project: 92451814 Triangle Texaco-Effluent Method: Client:Terracon - Charlotte, NC SM 2540D-2011 Date:November 07, 2019 Description:2540D Total Suspended Solids General Information: 1 sample was analyzed for SM 2540D-2011. All samples were received in acceptable condition with any exceptions noted below or on the chain-of custody and/or the sample condition upon receipt form (SCUR) attached at the end of this report. Hold Time: The samples were analyzed within the method required hold times with any exceptions noted below. Method Blank: All analytes were below the report limit in the method blank, where applicable, with any exceptions noted below. Laboratory Control Spike: All laboratory control spike compounds were within QC limits with any exceptions noted below. Matrix Spikes: All percent recoveries and relative percent differences (RPDs) were within acceptance criteria with any exceptions noted below. Duplicate Sample: All duplicate sample results were within method acceptance criteria with any exceptions noted below. Additional Comments: REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 12 of 39 #=NA# PROJECT NARRATIVE Pace Project No.: Project: 92451814 Triangle Texaco-Effluent Method: Client:Terracon - Charlotte, NC SM 4500-H+B-2011 Date:November 07, 2019 Description:4500H+ pH, Electrometric General Information: 1 sample was analyzed for SM 4500-H+B-2011. All samples were received in acceptable condition with any exceptions noted below or on the chain-of custody and/or the sample condition upon receipt form (SCUR) attached at the end of this report. Hold Time: The samples were analyzed within the method required hold times with any exceptions noted below. H3: Sample was received or analysis requested beyond the recognized method holding time. • PIPE 001G (Lab ID: 92451814002) Method Blank: All analytes were below the report limit in the method blank, where applicable, with any exceptions noted below. Laboratory Control Spike: All laboratory control spike compounds were within QC limits with any exceptions noted below. Matrix Spikes: All percent recoveries and relative percent differences (RPDs) were within acceptance criteria with any exceptions noted below. Duplicate Sample: All duplicate sample results were within method acceptance criteria with any exceptions noted below. Additional Comments: REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 13 of 39 #=NA# PROJECT NARRATIVE Pace Project No.: Project: 92451814 Triangle Texaco-Effluent Method: Client:Terracon - Charlotte, NC SM 5210B-2011 Date:November 07, 2019 Description:5210B BOD, 5 day General Information: 1 sample was analyzed for SM 5210B-2011. All samples were received in acceptable condition with any exceptions noted below or on the chain-of custody and/or the sample condition upon receipt form (SCUR) attached at the end of this report. Hold Time: The samples were analyzed within the method required hold times with any exceptions noted below. Sample Preparation: The samples were prepared in accordance with with any exceptions noted below. Method Blank: All analytes were below the report limit in the method blank, where applicable, with any exceptions noted below. Laboratory Control Spike: All laboratory control spike compounds were within QC limits with any exceptions noted below. Matrix Spikes: All percent recoveries and relative percent differences (RPDs) were within acceptance criteria with any exceptions noted below. Duplicate Sample: All duplicate sample results were within method acceptance criteria with any exceptions noted below. Additional Comments: Analyte Comments: QC Batch: 507061 B2: Oxygen usage is less than 2.0 for all dilutions set. The reported value is an estimated less than value and is calculated for the dilution using the most amount of sample. • PIPE 001C (Lab ID: 92451814001) • BOD, 5 day REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 14 of 39 #=NA# PROJECT NARRATIVE Pace Project No.: Project: 92451814 Triangle Texaco-Effluent Method: Client:Terracon - Charlotte, NC EPA 350.1 Rev 2.0 1993 Date:November 07, 2019 Description:350.1 Ammonia General Information: 1 sample was analyzed for EPA 350.1 Rev 2.0 1993. All samples were received in acceptable condition with any exceptions noted below or on the chain-of custody and/or the sample condition upon receipt form (SCUR) attached at the end of this report. Hold Time: The samples were analyzed within the method required hold times with any exceptions noted below. Method Blank: All analytes were below the report limit in the method blank, where applicable, with any exceptions noted below. Laboratory Control Spike: All laboratory control spike compounds were within QC limits with any exceptions noted below. Matrix Spikes: All percent recoveries and relative percent differences (RPDs) were within acceptance criteria with any exceptions noted below. Additional Comments: REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 15 of 39 #=NA# PROJECT NARRATIVE Pace Project No.: Project: 92451814 Triangle Texaco-Effluent Method: Client:Terracon - Charlotte, NC SM 4500-CN-E-2011 Date:November 07, 2019 Description:4500CNE Cyanide, Total General Information: 1 sample was analyzed for SM 4500-CN-E-2011. All samples were received in acceptable condition with any exceptions noted below or on the chain-of custody and/or the sample condition upon receipt form (SCUR) attached at the end of this report. Hold Time: The samples were analyzed within the method required hold times with any exceptions noted below. Sample Preparation: The samples were prepared in accordance with SM 4500-CN-E-2011 with any exceptions noted below. Method Blank: All analytes were below the report limit in the method blank, where applicable, with any exceptions noted below. Laboratory Control Spike: All laboratory control spike compounds were within QC limits with any exceptions noted below. Matrix Spikes: All percent recoveries and relative percent differences (RPDs) were within acceptance criteria with any exceptions noted below. QC Batch: 507276 A matrix spike and/or matrix spike duplicate (MS/MSD) were performed on the following sample(s): 92450933008,92451594003 M1: Matrix spike recovery exceeded QC limits. Batch accepted based on laboratory control sample (LCS) recovery. • MS (Lab ID: 2723599) • Cyanide • MS (Lab ID: 2723601) • Cyanide • MSD (Lab ID: 2723600) • Cyanide • MSD (Lab ID: 2723602) • Cyanide Additional Comments: This data package has been reviewed for quality and completeness and is approved for release. REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 16 of 39 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92451814 Triangle Texaco-Effluent Sample:PIPE 001C Lab ID:92451814001 Collected:10/30/19 14:35 Received:10/31/19 11:55 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: EPA 6010D Preparation Method: EPA 3010A6010 MET ICP Cadmium ND ug/L 11/06/19 19:09 7440-43-911/01/19 21:551.0 0.50 1 Chromium ND ug/L 11/06/19 19:09 7440-47-311/01/19 21:555.0 2.5 1 Copper ND ug/L 11/06/19 19:09 7440-50-811/01/19 21:555.0 2.5 1 Lead 3.0J ug/L 11/06/19 19:09 7439-92-111/01/19 21:555.0 2.5 1 Nickel ND ug/L 11/06/19 19:09 7440-02-011/01/19 21:555.0 2.5 1 Silver ND ug/L 11/06/19 19:09 7440-22-411/01/19 21:555.0 2.5 1 Zinc ND ug/L 11/06/19 19:09 7440-66-611/01/19 21:5510.0 5.0 1 Analytical Method: EPA 6020B Preparation Method: EPA 3010A6020 MET ICPMS Arsenic 0.64 ug/L 11/01/19 21:56 7440-38-211/01/19 03:300.10 0.060 1 Analytical Method: EPA 7470A Preparation Method: EPA 7470A7470 Mercury Mercury ND ug/L 11/01/19 15:23 7439-97-611/01/19 11:420.20 0.10 1 Analytical Method: SM 2540D-20112540D Total Suspended Solids Total Suspended Solids ND mg/L 11/04/19 23:232.5 2.5 1 Analytical Method: SM 5210B-20115210B BOD, 5 day BOD, 5 day ND mg/L 11/05/19 23:36 B211/01/19 03:122.0 2.0 1 Analytical Method: EPA 350.1 Rev 2.0 1993350.1 Ammonia Nitrogen, Ammonia ND mg/L 11/05/19 19:22 7664-41-70.10 0.070 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/07/2019 03:36 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 17 of 39 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92451814 Triangle Texaco-Effluent Sample:PIPE 001G Lab ID:92451814002 Collected:10/30/19 14:10 Received:10/31/19 11:55 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: EPA 1664BHEM, Oil and Grease Oil and Grease ND mg/L 11/06/19 17:265.0 1.3 1 Analytical Method: EPA 8082A Preparation Method: EPA 3510C8082 GCS PCB RVE PCB-1016 (Aroclor 1016)ND ug/L 11/05/19 19:07 12674-11-211/05/19 09:510.50 0.22 1 PCB-1221 (Aroclor 1221)ND ug/L 11/05/19 19:07 11104-28-211/05/19 09:510.50 0.32 1 PCB-1232 (Aroclor 1232)ND ug/L 11/05/19 19:07 11141-16-511/05/19 09:510.50 0.21 1 PCB-1242 (Aroclor 1242)ND ug/L 11/05/19 19:07 53469-21-911/05/19 09:510.50 0.44 1 PCB-1248 (Aroclor 1248)ND ug/L 11/05/19 19:07 12672-29-611/05/19 09:510.50 0.34 1 PCB-1254 (Aroclor 1254)ND ug/L 11/05/19 19:07 11097-69-111/05/19 09:510.50 0.24 1 PCB-1260 (Aroclor 1260)ND ug/L 11/05/19 19:07 11096-82-511/05/19 09:510.50 0.30 1 Surrogates Decachlorobiphenyl (S)89 %11/05/19 19:07 2051-24-311/05/19 09:5110-130 1 Analytical Method: SM 6200B6200B MSV Benzene ND ug/L 11/05/19 01:53 71-43-20.50 0.24 1 Bromobenzene ND ug/L 11/05/19 01:53 108-86-10.50 0.22 1 Bromochloromethane ND ug/L 11/05/19 01:53 74-97-50.50 0.26 1 Bromodichloromethane ND ug/L 11/05/19 01:53 75-27-40.50 0.18 1 Bromoform ND ug/L 11/05/19 01:53 75-25-20.50 0.40 1 Bromomethane ND ug/L 11/05/19 01:53 74-83-95.0 1.7 1 n-Butylbenzene ND ug/L 11/05/19 01:53 104-51-80.50 0.35 1 sec-Butylbenzene ND ug/L 11/05/19 01:53 135-98-80.50 0.25 1 tert-Butylbenzene ND ug/L 11/05/19 01:53 98-06-60.50 0.25 1 Carbon tetrachloride ND ug/L 11/05/19 01:53 56-23-50.50 0.23 1 Chlorobenzene ND ug/L 11/05/19 01:53 108-90-70.50 0.22 1 Chloroethane ND ug/L 11/05/19 01:53 75-00-31.0 0.58 1 Chloroform ND ug/L 11/05/19 01:53 67-66-30.50 0.35 1 Chloromethane ND ug/L 11/05/19 01:53 74-87-31.0 0.42 1 2-Chlorotoluene ND ug/L 11/05/19 01:53 95-49-80.50 0.21 1 4-Chlorotoluene ND ug/L 11/05/19 01:53 106-43-40.50 0.21 1 1,2-Dibromo-3-chloropropane ND ug/L 11/05/19 01:53 96-12-81.0 0.38 1 Dibromochloromethane ND ug/L 11/05/19 01:53 124-48-10.50 0.40 1 1,2-Dibromoethane (EDB)ND ug/L 11/05/19 01:53 106-93-40.50 0.23 1 Dibromomethane ND ug/L 11/05/19 01:53 74-95-30.50 0.31 1 1,2-Dichlorobenzene ND ug/L 11/05/19 01:53 95-50-10.50 0.24 1 1,3-Dichlorobenzene ND ug/L 11/05/19 01:53 541-73-10.50 0.25 1 1,4-Dichlorobenzene ND ug/L 11/05/19 01:53 106-46-70.50 0.25 1 Dichlorodifluoromethane ND ug/L 11/05/19 01:53 75-71-80.50 0.28 1 1,1-Dichloroethane ND ug/L 11/05/19 01:53 75-34-30.50 0.24 1 1,2-Dichloroethane ND ug/L 11/05/19 01:53 107-06-20.50 0.26 1 1,1-Dichloroethene ND ug/L 11/05/19 01:53 75-35-40.50 0.22 1 cis-1,2-Dichloroethene ND ug/L 11/05/19 01:53 156-59-20.50 0.21 1 trans-1,2-Dichloroethene ND ug/L 11/05/19 01:53 156-60-50.50 0.26 1 1,2-Dichloropropane ND ug/L 11/05/19 01:53 78-87-50.50 0.18 1 1,3-Dichloropropane ND ug/L 11/05/19 01:53 142-28-90.50 0.34 1 2,2-Dichloropropane ND ug/L 11/05/19 01:53 594-20-70.50 0.28 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/07/2019 03:36 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 18 of 39 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92451814 Triangle Texaco-Effluent Sample:PIPE 001G Lab ID:92451814002 Collected:10/30/19 14:10 Received:10/31/19 11:55 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B6200B MSV 1,1-Dichloropropene ND ug/L 11/05/19 01:53 563-58-60.50 0.35 1 cis-1,3-Dichloropropene ND ug/L 11/05/19 01:53 10061-01-50.50 0.36 1 trans-1,3-Dichloropropene ND ug/L 11/05/19 01:53 10061-02-60.50 0.39 1 Diisopropyl ether ND ug/L 11/05/19 01:53 108-20-30.50 0.33 1 Ethylbenzene ND ug/L 11/05/19 01:53 100-41-40.50 0.24 1 Hexachloro-1,3-butadiene ND ug/L 11/05/19 01:53 87-68-32.0 1.2 1 Isopropylbenzene (Cumene)ND ug/L 11/05/19 01:53 98-82-80.50 0.24 1 Methylene Chloride ND ug/L 11/05/19 01:53 75-09-22.0 1.5 1 Methyl-tert-butyl ether ND ug/L 11/05/19 01:53 1634-04-40.50 0.44 1 Naphthalene ND ug/L 11/05/19 01:53 91-20-32.0 0.66 1 n-Propylbenzene ND ug/L 11/05/19 01:53 103-65-10.50 0.24 1 Styrene ND ug/L 11/05/19 01:53 100-42-50.50 0.26 1 1,1,1,2-Tetrachloroethane ND ug/L 11/05/19 01:53 630-20-60.50 0.42 1 1,1,2,2-Tetrachloroethane ND ug/L 11/05/19 01:53 79-34-50.50 0.19 1 Tetrachloroethene ND ug/L 11/05/19 01:53 127-18-40.50 0.23 1 Toluene ND ug/L 11/05/19 01:53 108-88-30.50 0.23 1 1,2,3-Trichlorobenzene ND ug/L 11/05/19 01:53 87-61-62.0 0.78 1 1,2,4-Trichlorobenzene ND ug/L 11/05/19 01:53 120-82-12.0 0.44 1 1,1,1-Trichloroethane ND ug/L 11/05/19 01:53 71-55-60.50 0.28 1 1,1,2-Trichloroethane ND ug/L 11/05/19 01:53 79-00-50.50 0.23 1 Trichloroethene ND ug/L 11/05/19 01:53 79-01-60.50 0.23 1 Trichlorofluoromethane ND ug/L 11/05/19 01:53 75-69-41.0 0.34 1 1,2,3-Trichloropropane ND ug/L 11/05/19 01:53 96-18-40.50 0.27 1 1,2,4-Trimethylbenzene 0.36J ug/L 11/05/19 01:53 95-63-60.50 0.19 1 1,3,5-Trimethylbenzene ND ug/L 11/05/19 01:53 108-67-80.50 0.23 1 Vinyl chloride ND ug/L 11/05/19 01:53 75-01-41.0 0.41 1 m&p-Xylene ND ug/L 11/05/19 01:53 179601-23-11.0 0.44 1 o-Xylene ND ug/L 11/05/19 01:53 95-47-60.50 0.24 1 Surrogates 1,2-Dichloroethane-d4 (S)97 %11/05/19 01:53 17060-07-070-130 1 4-Bromofluorobenzene (S)97 %11/05/19 01:53 460-00-470-130 1 Toluene-d8 (S)102 %11/05/19 01:53 2037-26-570-130 1 Analytical Method: SM 4500-H+B-20114500H+ pH, Electrometric pH at 25 Degrees C 8.4 Std. Units 11/03/19 17:06 H30.10 0.10 1 Analytical Method: SM 4500-CN-E-2011 Preparation Method: SM 4500-CN-E-20114500CNE Cyanide, Total Cyanide ND mg/L 11/03/19 14:24 57-12-511/02/19 13:000.0080 0.0060 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/07/2019 03:36 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 19 of 39 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92451814 Triangle Texaco-Effluent 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: 508009 EPA 1664B EPA 1664B 1664 HEM, Oil and Grease Associated Lab Samples:92451814002 Parameter Units Blank Result Reporting Limit Qualifiers METHOD BLANK:2727262 Associated Lab Samples:92451814002 Matrix:Water AnalyzedMDL Oil and Grease mg/L ND 5.0 11/06/19 17:251.3 Parameter Units LCS Result % Rec Limits Qualifiers% RecConc. 2727263LABORATORY CONTROL SAMPLE: LCSSpike Oil and Grease mg/L 35.640 89 78-114 Parameter Units MS Result % Rec Limits Qualifiers% RecConc. 2727264MATRIX SPIKE SAMPLE: MSSpike Result 92451800001 Oil and Grease mg/L 46.840 100 78-1146.6 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/07/2019 03:36 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 20 of 39 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92451814 Triangle Texaco-Effluent 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: 507118 EPA 7470A EPA 7470A 7470 Mercury Associated Lab Samples:92451814001 Parameter Units Blank Result Reporting Limit Qualifiers METHOD BLANK:2722788 Associated Lab Samples:92451814001 Matrix:Water AnalyzedMDL Mercury ug/L ND 0.20 11/01/19 15:070.10 Parameter Units LCS Result % Rec Limits Qualifiers% RecConc. 2722789LABORATORY CONTROL SAMPLE: LCSSpike Mercury ug/L 2.42.5 96 80-120 Parameter Units MS Result % Rec Limits Qual% RecConc. 2722790MATRIX SPIKE & MATRIX SPIKE DUPLICATE: MSSpike Result 92451052013 2722791 MSD Result MSD % Rec RPD RPD Max MSDMS Spike Conc. Mercury ug/L 2.5 85 75-12579 6 252.5ND 2.1 2.0 Parameter Units MS Result % Rec Limits Qual% RecConc. 2722792MATRIX SPIKE & MATRIX SPIKE DUPLICATE: MSSpike Result 92451877011 2722793 MSD Result MSD % Rec RPD RPD Max MSDMS Spike Conc. Mercury ug/L 2.5 92 75-12599 8 252.5ND 2.3 2.5 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/07/2019 03:36 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 21 of 39 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92451814 Triangle Texaco-Effluent 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: 507236 EPA 3010A EPA 6010D 6010 MET Associated Lab Samples:92451814001 Parameter Units Blank Result Reporting Limit Qualifiers METHOD BLANK:2723514 Associated Lab Samples:92451814001 Matrix:Water AnalyzedMDL Cadmium ug/L ND 1.0 11/06/19 19:030.50 Chromium ug/L ND 5.0 11/06/19 19:032.5 Copper ug/L ND 5.0 11/06/19 19:032.5 Lead ug/L ND 5.0 11/06/19 19:032.5 Nickel ug/L ND 5.0 11/06/19 19:032.5 Silver ug/L ND 5.0 11/06/19 19:032.5 Zinc ug/L ND 10.0 11/06/19 19:035.0 Parameter Units LCS Result % Rec Limits Qualifiers% RecConc. 2723515LABORATORY CONTROL SAMPLE: LCSSpike Cadmium ug/L 472500 94 80-120 Chromium ug/L 472500 94 80-120 Copper ug/L 481500 96 80-120 Lead ug/L 473500 95 80-120 Nickel ug/L 467500 93 80-120 Silver ug/L 241250 96 80-120 Zinc ug/L 462500 92 80-120 Parameter Units MS Result % Rec Limits Qual% RecConc. 2723516MATRIX SPIKE & MATRIX SPIKE DUPLICATE: MSSpike Result 92451814001 2723517 MSD Result MSD % Rec RPD RPD Max MSDMS Spike Conc. Cadmium ug/L 500 94 75-12592 1 20500ND469462 Chromium ug/L 500 94 75-12593 2 20500ND471463 Copper ug/L 500 97 75-12595 1 20500ND486479 Lead ug/L 500 94 75-12592 2 205003.0J 473 463 Nickel ug/L 500 91 75-12589 2 20500ND454447 Silver ug/L 250 100 75-12598 1 20250ND249246 Zinc ug/L 500 92 75-12591 2 20500ND463454 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/07/2019 03:36 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 22 of 39 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92451814 Triangle Texaco-Effluent 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: 507065 EPA 3010A EPA 6020B 6020 MET Associated Lab Samples:92451814001 Parameter Units Blank Result Reporting Limit Qualifiers METHOD BLANK:2722692 Associated Lab Samples:92451814001 Matrix:Water AnalyzedMDL Arsenic ug/L ND 0.10 11/01/19 17:540.060 Parameter Units LCS Result % Rec Limits Qualifiers% RecConc. 2722693LABORATORY CONTROL SAMPLE: LCSSpike Arsenic ug/L 10.410 104 80-120 Parameter Units MS Result % Rec Limits Qual% RecConc. 2722694MATRIX SPIKE & MATRIX SPIKE DUPLICATE: MSSpike Result 92450268004 2722695 MSD Result MSD % Rec RPD RPD Max MSDMS Spike Conc. Arsenic ug/L 50 101 75-125106 5 2050ND50.4 52.9 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/07/2019 03:36 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 23 of 39 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92451814 Triangle Texaco-Effluent 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: 507450 SM 6200B SM 6200B 6200B MSV Associated Lab Samples:92451814002 Parameter Units Blank Result Reporting Limit Qualifiers METHOD BLANK:2724398 Associated Lab Samples:92451814002 Matrix:Water AnalyzedMDL 1,1,1,2-Tetrachloroethane ug/L ND 0.50 11/04/19 22:190.42 1,1,1-Trichloroethane ug/L ND 0.50 11/04/19 22:190.28 1,1,2,2-Tetrachloroethane ug/L ND 0.50 11/04/19 22:190.19 1,1,2-Trichloroethane ug/L ND 0.50 11/04/19 22:190.23 1,1-Dichloroethane ug/L ND 0.50 11/04/19 22:190.24 1,1-Dichloroethene ug/L ND 0.50 11/04/19 22:190.22 1,1-Dichloropropene ug/L ND 0.50 11/04/19 22:190.35 1,2,3-Trichlorobenzene ug/L ND 2.0 11/04/19 22:190.78 1,2,3-Trichloropropane ug/L ND 0.50 11/04/19 22:190.27 1,2,4-Trichlorobenzene ug/L ND 2.0 11/04/19 22:190.44 1,2,4-Trimethylbenzene ug/L ND 0.50 11/04/19 22:190.19 1,2-Dibromo-3-chloropropane ug/L ND 1.0 11/04/19 22:190.38 1,2-Dibromoethane (EDB)ug/L ND 0.50 11/04/19 22:190.23 1,2-Dichlorobenzene ug/L ND 0.50 11/04/19 22:190.24 1,2-Dichloroethane ug/L ND 0.50 11/04/19 22:190.26 1,2-Dichloropropane ug/L ND 0.50 11/04/19 22:190.18 1,3,5-Trimethylbenzene ug/L ND 0.50 11/04/19 22:190.23 1,3-Dichlorobenzene ug/L ND 0.50 11/04/19 22:190.25 1,3-Dichloropropane ug/L ND 0.50 11/04/19 22:190.34 1,4-Dichlorobenzene ug/L ND 0.50 11/04/19 22:190.25 2,2-Dichloropropane ug/L ND 0.50 11/04/19 22:190.28 2-Chlorotoluene ug/L ND 0.50 11/04/19 22:190.21 4-Chlorotoluene ug/L ND 0.50 11/04/19 22:190.21 Benzene ug/L ND 0.50 11/04/19 22:190.24 Bromobenzene ug/L ND 0.50 11/04/19 22:190.22 Bromochloromethane ug/L ND 0.50 11/04/19 22:190.26 Bromodichloromethane ug/L ND 0.50 11/04/19 22:190.18 Bromoform ug/L ND 0.50 11/04/19 22:190.40 Bromomethane ug/L ND 5.0 11/04/19 22:191.7 Carbon tetrachloride ug/L ND 0.50 11/04/19 22:190.23 Chlorobenzene ug/L ND 0.50 11/04/19 22:190.22 Chloroethane ug/L ND 1.0 11/04/19 22:190.58 Chloroform ug/L 0.80 0.50 11/04/19 22:190.35 Chloromethane ug/L ND 1.0 11/04/19 22:190.42 cis-1,2-Dichloroethene ug/L ND 0.50 11/04/19 22:190.21 cis-1,3-Dichloropropene ug/L ND 0.50 11/04/19 22:190.36 Dibromochloromethane ug/L ND 0.50 11/04/19 22:190.40 Dibromomethane ug/L ND 0.50 11/04/19 22:190.31 Dichlorodifluoromethane ug/L ND 0.50 11/04/19 22:190.28 Diisopropyl ether ug/L ND 0.50 11/04/19 22:190.33 Ethylbenzene ug/L ND 0.50 11/04/19 22:190.24 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/07/2019 03:36 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 24 of 39 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92451814 Triangle Texaco-Effluent 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:2724398 Associated Lab Samples:92451814002 Matrix:Water AnalyzedMDL Hexachloro-1,3-butadiene ug/L ND 2.0 11/04/19 22:191.2 Isopropylbenzene (Cumene)ug/L ND 0.50 11/04/19 22:190.24 m&p-Xylene ug/L ND 1.0 11/04/19 22:190.44 Methyl-tert-butyl ether ug/L ND 0.50 11/04/19 22:190.44 Methylene Chloride ug/L ND 2.0 11/04/19 22:191.5 n-Butylbenzene ug/L ND 0.50 11/04/19 22:190.35 n-Propylbenzene ug/L ND 0.50 11/04/19 22:190.24 Naphthalene ug/L ND 2.0 11/04/19 22:190.66 o-Xylene ug/L ND 0.50 11/04/19 22:190.24 sec-Butylbenzene ug/L ND 0.50 11/04/19 22:190.25 Styrene ug/L ND 0.50 11/04/19 22:190.26 tert-Butylbenzene ug/L ND 0.50 11/04/19 22:190.25 Tetrachloroethene ug/L ND 0.50 11/04/19 22:190.23 Toluene ug/L ND 0.50 11/04/19 22:190.23 trans-1,2-Dichloroethene ug/L ND 0.50 11/04/19 22:190.26 trans-1,3-Dichloropropene ug/L ND 0.50 11/04/19 22:190.39 Trichloroethene ug/L ND 0.50 11/04/19 22:190.23 Trichlorofluoromethane ug/L ND 1.0 11/04/19 22:190.34 Vinyl chloride ug/L ND 1.0 11/04/19 22:190.41 1,2-Dichloroethane-d4 (S)%93 70-130 11/04/19 22:19 4-Bromofluorobenzene (S)%96 70-130 11/04/19 22:19 Toluene-d8 (S)%111 70-130 11/04/19 22:19 Parameter Units LCS Result % Rec Limits Qualifiers% RecConc. 2724399LABORATORY CONTROL SAMPLE: LCSSpike 1,1,1,2-Tetrachloroethane ug/L 52.550 105 60-140 1,1,1-Trichloroethane ug/L 50.550 101 60-140 1,1,2,2-Tetrachloroethane ug/L 51.950 104 60-140 1,1,2-Trichloroethane ug/L 51.650 103 60-140 1,1-Dichloroethane ug/L 47.450 95 60-140 1,1-Dichloroethene ug/L 53.350 107 60-140 1,1-Dichloropropene ug/L 50.150 100 60-140 1,2,3-Trichlorobenzene ug/L 57.750 115 60-140 1,2,3-Trichloropropane ug/L 51.250 102 60-140 1,2,4-Trichlorobenzene ug/L 58.050 116 60-140 1,2,4-Trimethylbenzene ug/L 50.250 100 60-140 1,2-Dibromo-3-chloropropane ug/L 59.150 118 60-140 1,2-Dibromoethane (EDB)ug/L 54.150 108 60-140 1,2-Dichlorobenzene ug/L 52.150 104 60-140 1,2-Dichloroethane ug/L 44.850 90 60-140 1,2-Dichloropropane ug/L 56.550 113 60-140 1,3,5-Trimethylbenzene ug/L 50.350 101 60-140 1,3-Dichlorobenzene ug/L 48.750 97 60-140 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/07/2019 03:36 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 25 of 39 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92451814 Triangle Texaco-Effluent 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. 2724399LABORATORY CONTROL SAMPLE: LCSSpike 1,3-Dichloropropane ug/L 54.450 109 60-140 1,4-Dichlorobenzene ug/L 49.550 99 60-140 2,2-Dichloropropane ug/L 51.950 104 60-140 2-Chlorotoluene ug/L 50.150 100 60-140 4-Chlorotoluene ug/L 50.050 100 60-140 Benzene ug/L 52.650 105 60-140 Bromobenzene ug/L 51.750 103 60-140 Bromochloromethane ug/L 50.650 101 60-140 Bromodichloromethane ug/L 56.150 112 60-140 Bromoform ug/L 55.050 110 60-140 Bromomethane ug/L 38.150 76 60-140 Carbon tetrachloride ug/L 50.050 100 60-140 Chlorobenzene ug/L 50.250 100 60-140 Chloroethane ug/L 45.750 91 60-140 Chloroform ug/L 50.250 100 60-140 Chloromethane ug/L 37.350 75 60-140 cis-1,2-Dichloroethene ug/L 48.050 96 60-140 cis-1,3-Dichloropropene ug/L 59.550 119 60-140 Dibromochloromethane ug/L 54.250 108 60-140 Dibromomethane ug/L 51.750 103 60-140 Dichlorodifluoromethane ug/L 40.750 81 60-140 Diisopropyl ether ug/L 50.150 100 60-140 Ethylbenzene ug/L 50.450 101 60-140 Hexachloro-1,3-butadiene ug/L 56.750 113 60-140 Isopropylbenzene (Cumene)ug/L 52.350 105 60-140 m&p-Xylene ug/L 102100 102 60-140 Methyl-tert-butyl ether ug/L 51.550 103 60-140 Methylene Chloride ug/L 45.650 91 60-140 n-Butylbenzene ug/L 51.550 103 60-140 n-Propylbenzene ug/L 50.550 101 60-140 Naphthalene ug/L 60.250 120 60-140 o-Xylene ug/L 53.750 107 60-140 sec-Butylbenzene ug/L 51.250 102 60-140 Styrene ug/L 52.150 104 60-140 tert-Butylbenzene ug/L 42.850 86 60-140 Tetrachloroethene ug/L 54.350 109 60-140 Toluene ug/L 50.650 101 60-140 trans-1,2-Dichloroethene ug/L 46.750 93 60-140 trans-1,3-Dichloropropene ug/L 51.950 104 60-140 Trichloroethene ug/L 52.350 105 60-140 Trichlorofluoromethane ug/L 50.050 100 60-140 Vinyl chloride ug/L 47.850 96 60-140 1,2-Dichloroethane-d4 (S)%94 70-130 4-Bromofluorobenzene (S)%100 70-130 Toluene-d8 (S)%105 70-130 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/07/2019 03:36 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 26 of 39 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92451814 Triangle Texaco-Effluent 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 MS Result % Rec Limits Qual% RecConc. 2725355MATRIX SPIKE & MATRIX SPIKE DUPLICATE: MSSpike Result 92451227001 2725356 MSD Result MSD % Rec RPD RPD Max MSDMS Spike Conc. 1,1,1,2-Tetrachloroethane ug/L 20 108 60-140106 1 3020ND21.5 21.3 1,1,1-Trichloroethane ug/L 20 107 60-140106 0 3020ND21.3 21.3 1,1,2,2-Tetrachloroethane ug/L 20 95 60-140101 7 3020ND18.9 20.3 1,1,2-Trichloroethane ug/L 20 117 60-14098 18 3020ND23.4 19.6 1,1-Dichloroethane ug/L 20 102 60-140113 10 3020ND20.4 22.6 1,1-Dichloroethene ug/L 20 124 60-140125 1 3020ND24.8 25.0 1,1-Dichloropropene ug/L 20 104 60-140104 0 3020ND20.8 20.8 1,2,3-Trichlorobenzene ug/L 20 111 60-140101 10 3020ND22.2 20.1 1,2,3-Trichloropropane ug/L 20 92 60-14097 6 3020ND18.4 19.4 1,2,4-Trichlorobenzene ug/L 20 115 60-14098 16 3020ND23.0 19.6 1,2,4-Trimethylbenzene ug/L 20 102 60-140100 3 3020ND20.5 19.9 1,2-Dibromo-3- chloropropane ug/L 20 119 60-140106 12 3020ND23.8 21.2 1,2-Dibromoethane (EDB)ug/L 20 111 60-14090 21 3020ND22.2 18.1 1,2-Dichlorobenzene ug/L 20 103 60-14097 6 3020ND20.7 19.5 1,2-Dichloroethane ug/L 20 92 60-14098 6 3020ND18.4 19.6 1,2-Dichloropropane ug/L 20 120 60-14098 20 3020ND23.9 19.6 1,3,5-Trimethylbenzene ug/L 20 102 60-140109 7 3020ND20.4 21.9 1,3-Dichlorobenzene ug/L 20 101 60-14098 3 3020ND20.1 19.5 1,3-Dichloropropane ug/L 20 108 60-14092 15 3020ND21.5 18.5 1,4-Dichlorobenzene ug/L 20 100 60-14096 4 3020ND20.1 19.2 2,2-Dichloropropane ug/L 20 84 60-14084 0 3020ND16.8 16.8 2-Chlorotoluene ug/L 20 102 60-140109 7 3020ND20.4 21.8 4-Chlorotoluene ug/L 20 100 60-140105 5 3020ND20.0 21.1 Benzene ug/L 20 120 60-140104 14 3020ND23.9 20.8 Bromobenzene ug/L 20 107 60-140116 8 3020ND21.3 23.2 Bromochloromethane ug/L 20 99 60-140102 3 3020ND19.9 20.4 Bromodichloromethane ug/L 20 117 60-140112 4 3020ND23.3 22.5 Bromoform ug/L 20 101 60-140100 1 3020ND20.2 20.1 Bromomethane ug/L 20 65 60-14076 16 3020ND13.0 15.2 Carbon tetrachloride ug/L 20 104 60-14099 6 3020ND20.9 19.7 Chlorobenzene ug/L 20 107 60-140103 4 3020ND21.4 20.5 Chloroethane ug/L 20 117 60-140117 0 3020ND23.3 23.4 Chloroform ug/L 20 102 60-140102 0 3020ND20.4 20.4 Chloromethane ug/L 20 87 60-14077 13 3020ND17.5 15.3 cis-1,2-Dichloroethene ug/L 20 101 60-140101 0 3020ND20.7 20.6 cis-1,3-Dichloropropene ug/L 20 116 60-140114 2 3020ND23.2 22.8 Dibromochloromethane ug/L 20 106 60-14093 13 3020ND21.1 18.6 Dibromomethane ug/L 20 114 60-14096 18 3020ND22.8 19.1 Dichlorodifluoromethane ug/L 20 107 60-14084 24 3020ND21.3 16.7 Diisopropyl ether ug/L 20 99 60-140116 16 3020ND19.8 23.2 Ethylbenzene ug/L 20 106 60-140102 4 3020ND21.2 20.3 Hexachloro-1,3-butadiene ug/L 20 110 60-14093 16 3020ND21.9 18.6 Isopropylbenzene(Cumene)ug/L 20 96 60-14098 2 3020ND19.3 19.7 m&p-Xylene ug/L 40 105 60-14092 13 3040ND42.1 36.9 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/07/2019 03:36 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 27 of 39 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92451814 Triangle Texaco-Effluent 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 MS Result % Rec Limits Qual% RecConc. 2725355MATRIX SPIKE & MATRIX SPIKE DUPLICATE: MSSpike Result 92451227001 2725356 MSD Result MSD % Rec RPD RPD Max MSDMS Spike Conc. Methyl-tert-butyl ether ug/L 20 113 60-140122 8 3020ND22.6 24.4 Methylene Chloride ug/L 20 111 60-140118 6 3020ND22.3 23.6 n-Butylbenzene ug/L 20 100 60-14094 6 3020ND19.9 18.8 n-Propylbenzene ug/L 20 103 60-140112 8 3020ND20.6 22.4 Naphthalene ug/L 20 112 60-14099 12 3020ND22.4 19.8 o-Xylene ug/L 20 102 60-140100 2 3020ND20.3 19.9 sec-Butylbenzene ug/L 20 107 60-140105 1 3020ND21.4 21.1 Styrene ug/L 20 94 60-14094 1 3020ND18.8 18.7 tert-Butylbenzene ug/L 20 90 60-14092 2 3020ND18.0 18.4 Tetrachloroethene ug/L 20 100 60-14093 7 3020ND19.9 18.5 Toluene ug/L 20 101 60-140105 5 3020ND20.1 21.1 trans-1,2-Dichloroethene ug/L 20 118 60-140122 3 3020ND23.7 24.4 trans-1,3-Dichloropropene ug/L 20 97 60-14094 3 3020ND19.4 18.8 Trichloroethene ug/L 20 116 60-140111 4 3020ND23.2 22.2 Trichlorofluoromethane ug/L 20 121 60-140119 2 3020ND24.2 23.7 Vinyl chloride ug/L 20 108 60-140107 2 3020ND21.7 21.3 1,2-Dichloroethane-d4 (S)%90 70-13096 4-Bromofluorobenzene (S)%87 70-13099 Toluene-d8 (S)%92 70-130101 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/07/2019 03:36 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 28 of 39 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92451814 Triangle Texaco-Effluent 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: 507606 EPA 3510C EPA 8082A 8082 GCS PCB Associated Lab Samples:92451814002 Parameter Units Blank Result Reporting Limit Qualifiers METHOD BLANK:2725053 Associated Lab Samples:92451814002 Matrix:Water AnalyzedMDL PCB-1016 (Aroclor 1016)ug/L ND 0.50 11/05/19 19:510.22 PCB-1221 (Aroclor 1221)ug/L ND 0.50 11/05/19 19:510.32 PCB-1232 (Aroclor 1232)ug/L ND 0.50 11/05/19 19:510.21 PCB-1242 (Aroclor 1242)ug/L ND 0.50 11/05/19 19:510.44 PCB-1248 (Aroclor 1248)ug/L ND 0.50 11/05/19 19:510.34 PCB-1254 (Aroclor 1254)ug/L ND 0.50 11/05/19 19:510.24 PCB-1260 (Aroclor 1260)ug/L ND 0.50 11/05/19 19:510.30 Decachlorobiphenyl (S)%125 10-130 11/05/19 19:51 Parameter Units LCS Result % Rec Limits Qualifiers% RecConc. 2725054LABORATORY CONTROL SAMPLE: LCSSpike PCB-1016 (Aroclor 1016)ug/L 4.85 96 41-130 PCB-1260 (Aroclor 1260)ug/L 5.65 112 42-130 Decachlorobiphenyl (S)%S013410-130 Parameter Units MS Result % Rec Limits Qual% RecConc. 2725055MATRIX SPIKE & MATRIX SPIKE DUPLICATE: MSSpike Result 92451801002 2725056 MSD Result MSD % Rec RPD RPD Max MSDMS Spike Conc. PCB-1016 (Aroclor 1016)ug/L M1,R1533515-130110 101 305ND16.7 5.5 PCB-1260 (Aroclor 1260)ug/L 5 65 10-13074 12 305ND3.3 3.7 Decachlorobiphenyl (S)%75 10-13094 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/07/2019 03:36 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 29 of 39 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92451814 Triangle Texaco-Effluent 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: 507559 SM 2540D-2011 SM 2540D-2011 2540D Total Suspended Solids Associated Lab Samples:92451814001 Parameter Units Blank Result Reporting Limit Qualifiers METHOD BLANK:2724895 Associated Lab Samples:92451814001 Matrix:Water AnalyzedMDL Total Suspended Solids mg/L ND 2.5 11/04/19 23:182.5 Parameter Units LCS Result % Rec Limits Qualifiers% RecConc. 2724896LABORATORY CONTROL SAMPLE: LCSSpike Total Suspended Solids mg/L 234250 94 90-110 Parameter Units Dup Result Max RPD QualifiersRPDResult 92451813001 2724915SAMPLE DUPLICATE: Total Suspended Solids mg/L 83.0 0 2583.0 Parameter Units Dup Result Max RPD QualifiersRPDResult 92451813002 2724916SAMPLE DUPLICATE: Total Suspended Solids mg/L 348 10 25313 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/07/2019 03:36 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 30 of 39 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92451814 Triangle Texaco-Effluent 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: 507309 SM 4500-H+B-2011 SM 4500-H+B-2011 4500H+B pH Associated Lab Samples:92451814002 Parameter Units Dup Result Max RPD QualifiersRPDResult 92451190001 2723750SAMPLE DUPLICATE: pH at 25 Degrees C Std. Units 9.3 H30109.3 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/07/2019 03:36 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 31 of 39 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92451814 Triangle Texaco-Effluent 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: 507061 SM 5210B-2011 SM 5210B-2011 5210B BOD, 5 day Associated Lab Samples:92451814001 Parameter Units Blank Result Reporting Limit Qualifiers METHOD BLANK:2722668 Associated Lab Samples:92451814001 Matrix:Water AnalyzedMDL BOD, 5 day mg/L ND 2.0 11/05/19 22:492.0 Parameter Units LCS Result % Rec Limits Qualifiers% RecConc. 2722669LABORATORY CONTROL SAMPLE: LCSSpike BOD, 5 day mg/L 206198 104 84.6-115 Parameter Units Dup Result Max RPD QualifiersRPDResult 92451863002 2722671SAMPLE DUPLICATE: BOD, 5 day mg/L ND 10ND REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/07/2019 03:36 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 32 of 39 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92451814 Triangle Texaco-Effluent 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: 507727 EPA 350.1 Rev 2.0 1993 EPA 350.1 Rev 2.0 1993 350.1 Ammonia Associated Lab Samples:92451814001 Parameter Units Blank Result Reporting Limit Qualifiers METHOD BLANK:2725665 Associated Lab Samples:92451814001 Matrix:Water AnalyzedMDL Nitrogen, Ammonia mg/L ND 0.10 11/05/19 19:010.070 Parameter Units LCS Result % Rec Limits Qualifiers% RecConc. 2725666LABORATORY CONTROL SAMPLE: LCSSpike Nitrogen, Ammonia mg/L 5.15 102 90-110 Parameter Units MS Result % Rec Limits Qual% RecConc. 2725667MATRIX SPIKE & MATRIX SPIKE DUPLICATE: MSSpike Result 92451518002 2725668 MSD Result MSD % Rec RPD RPD Max MSDMS Spike Conc. Nitrogen, Ammonia mg/L 5 104 90-110104 0 1050.45 5.6 5.6 Parameter Units MS Result % Rec Limits Qual% RecConc. 2725669MATRIX SPIKE & MATRIX SPIKE DUPLICATE: MSSpike Result 92451829003 2725670 MSD Result MSD % Rec RPD RPD Max MSDMS Spike Conc. Nitrogen, Ammonia mg/L 5 102 90-110102 0 105ND5.1 5.1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/07/2019 03:36 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 33 of 39 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92451814 Triangle Texaco-Effluent 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: 507276 SM 4500-CN-E-2011 SM 4500-CN-E-2011 4500CNE Cyanide, Total Associated Lab Samples:92451814002 Parameter Units Blank Result Reporting Limit Qualifiers METHOD BLANK:2723597 Associated Lab Samples:92451814002 Matrix:Water AnalyzedMDL Cyanide mg/L ND 0.0080 11/03/19 13:580.0060 Parameter Units LCS Result % Rec Limits Qualifiers% RecConc. 2723598LABORATORY CONTROL SAMPLE: LCSSpike Cyanide mg/L 0.0960.1 96 80-120 Parameter Units MS Result % Rec Limits Qual% RecConc. 2723599MATRIX SPIKE & MATRIX SPIKE DUPLICATE: MSSpike Result 92450933008 2723600 MSD Result MSD % Rec RPD RPD Max MSDMS Spike Conc. Cyanide mg/L M10.1 57 80-12057 1 100.1ND 0.065 0.065 Parameter Units MS Result % Rec Limits Qual% RecConc. 2723601MATRIX SPIKE & MATRIX SPIKE DUPLICATE: MSSpike Result 92451594003 2723602 MSD Result MSD % Rec RPD RPD Max MSDMS Spike Conc. Cyanide mg/L M10.1 16 80-12016 2 100.1ND 0.021 0.021 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/07/2019 03:36 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 34 of 39 #=QL# QUALIFIERS Pace Project No.: Project: 92451814 Triangle Texaco-Effluent 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. TNTC - Too Numerous To Count 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 - The lowest concentration value that meets project requirements for quantitative data with known precision and bias for a specific analyte in a specific matrix. 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. 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 for each 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 - AshevillePASI-A Pace Analytical Services - CharlottePASI-C ANALYTE QUALIFIERS Oxygen usage is less than 2.0 for all dilutions set. The reported value is an estimated less than value and is calculated for the dilution using the most amount of sample.B2 Sample was received or analysis requested beyond the recognized method holding time.H3 Matrix spike recovery exceeded QC limits. Batch accepted based on laboratory control sample (LCS) recovery.M1 RPD value was outside control limits.R1 Surrogate recovery outside laboratory control limits.S0 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/07/2019 03:36 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 35 of 39 #=CR# QUALITY CONTROL DATA CROSS REFERENCE TABLE Pace Project No.: Project: 92451814 Triangle Texaco-Effluent Lab ID Sample ID QC Batch Method QC Batch Analytical Method Analytical Batch 92451814002 508009PIPE 001G EPA 1664B 92451814002 507606 507678PIPE 001G EPA 3510C EPA 8082A 92451814001 507236 507268PIPE 001C EPA 3010A EPA 6010D 92451814001 507065 507074PIPE 001C EPA 3010A EPA 6020B 92451814001 507118 507200PIPE 001C EPA 7470A EPA 7470A 92451814002 507450PIPE 001G SM 6200B 92451814001 507559PIPE 001C SM 2540D-2011 92451814002 507309PIPE 001G SM 4500-H+B-2011 92451814001 507061 507079PIPE 001C SM 5210B-2011 SM 5210B-2011 92451814001 507727PIPE 001C EPA 350.1 Rev 2.0 1993 92451814002 507276 507294PIPE 001G SM 4500-CN-E-2011 SM 4500-CN-E-2011 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/07/2019 03:36 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 36 of 39 Page 37 of 39 Page 38 of 39 Page 39 of 39 APPENDIX B FIELD NOTES APPENDIX C PHOTOGRAPHS Project No. 71179050 Date Photos Taken: November 19, 2019 Triangle Texaco – Mount Holly, North Carolina Photo 1 – View of monitoring well MW-1 located at the front of the auto repair facility. Photo 2 – View of monitoring well MW-1A located at the rear of the auto repair facility. Project No. 71179050 Date Photos Taken: November 19, 2019 Triangle Texaco – Mount Holly, North Carolina Photo 3 – View of monitoring wells MW-2 looking north. Project No. 71179050 Date Photos Taken: November 19, 2019 Triangle Texaco – Mount Holly, North Carolina Photo 4 – View of monitoring well MW-8 at the intersection of North Main Street and Woodlawn Avenue. Photo 5 – View of monitoring well MW-10, east of the auto repair facility. APPENDIX D INDUSTRIAL DISCHARGE MONITORING REPORT - NOVEMBER 2019