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HomeMy WebLinkAboutWS-2871_7246_CA_MRP_20210519S&ME, Inc. | 8646 West Market Street, Suite 105 | Greensboro, NC 27409 | p 336.288.7180 | www.smeinc.com May 19, 2021 McLeansville Fire Department 5326 Frieden Church Road McLeansville, NC, 27301 Attention: Mr. Roy Rimmer Reference: Letter Report – 2021 Groundwater Monitoring McLeansville Fire Department - Incident # 7246 McLeansville, North Carolina S&ME Project No. 1584-13-129C Dear Mr. Rimmer: The attached document describes sampling procedures; analytical results, and our findings for groundwater samples collected on May 3, 2021 at the McLeansville Fire Department site in McLeansville, North Carolina. Our services were performed in accordance with S&ME Proposal No. 212569 dated April 6, 2021. If you have any questions please call Edmund Henriques (336) 288-7180 at your convenience. Sincerely, S&ME, Inc. Brian Wilson Edmund Q.B. Henriques, L.G. Project Professional Project Manager / Senior Geologist EQBH/DC cc: Guilford County Department of Public Health Division of Environmental Health Attention: Mr. Gene Mao 400 West Market Street, Suite 300 Greensboro, North Carolina 27401 Letter Report – 2021 Groundwater Monitoring McLeansville Fire Department - Incident # 7246 McLeansville, North Carolina S&ME Project No. 1584-13-129C May 19, 2021 3 Groundwater Sampling S&ME, Inc. (S&ME) completed a groundwater monitoring event on May 3, 2021, at McLeansville Fire Department, hereafter referred to as the subject site (see Figure 1). Historically, monitoring wells MW-1 and MW-4 had the highest concentrations for constituents of concern. No other site monitoring wells had reported exceedances of the corresponding 15A NCAC 02L groundwater standards (2L Standards), when sampled last. Monitoring well MW-1 is near the source area for the release. Monitoring well MW-4 is located approximate 55 feet southeast of well MW-1, and down-gradient of the release area as depicted in Figure 2. For the May 3, 2021 monitoring event, groundwater samples were obtained from monitoring wells MW-1 and MW-4. Each sampled monitoring well was purged of approximately three times the initial well volume with a disposable PVC bailer or peristaltic pump. Each sample was handled with a new pair of nitrile gloves and was placed into the laboratory provided sampling containers, and then placed in a cooler with ice. The samples were submitted to Pace Analytical Services, Inc. (North Carolina Wastewater Certification #12) in Huntersville, North Carolina, for laboratory analysis. The samples obtained from monitoring wells MW-1 and MW-4 were analyzed for volatile organic compounds (VOCs) by EPA Method 602. Groundwater Analytical Results Table 1 provides a summary of the detected analytes for the May 3, 2021 monitoring event. Table 2 provides a summary of the historical groundwater concentrations detected in samples obtained from site monitoring wells. Table 3 provides a summary of the groundwater elevation data for this monitoring event and prior events. Table 4 provides monitoring well construction details. Figure 2 depicts the 2L Standard exceedances detected at the sampled monitoring wells. The laboratory analytical report for this monitoring is included in Attachment I. Drinking Well Sampling & Results On May 3, 2021, S&ME collected a sample from the McLeansville Fire Department’s water supply well (sample ID = WSW-1). The sample was submitted to Pace Analytical Laboratories, Inc. and analyzed for VOCs by EPA Method 602. No target constituents were detected above the corresponding method detection limit. A copy of the laboratory analytical report for the event is included in Attachment I. The Fire Department’s on-site water supply well is located approximately 170 feet cross-gradient of source area monitoring well MW-1. The neighboring off-site Clapp water supply is approximately 200 feet up-gradient of source area monitoring well MW-1. Figure 3 depicts properties with water supply wells identified during the water well receptor survey update in May 2015. Table 5 provides water supply well survey information. Discussion Analytical results for the May 3, 2021 monitoring event finds that benzene and naphthalene at monitoring well MW-1 were detected at concentrations that exceed their corresponding 2L Standards, which are also the CAP established cleanup goals. Analytical results for monitoring well MW-4 report no target constituent was detected with a concentration that exceeds the corresponding 2L Standards. Letter Report – 2021 Groundwater Monitoring McLeansville Fire Department - Incident # 7246 McLeansville, North Carolina S&ME Project No. 1584-13-129C May 19, 2021 4 Active remediation which ceased in May 2001, was effective at reducing VOC concentrations observed at site monitoring wells. Post active remediation groundwater VOC trends can be summarized as follows: At monitoring well MW-4, located down-gradient of the release source area, slow attenuation of VOCs in groundwater is suggested, with current VOC concentrations meeting the CAP established cleanup goals. Groundwater analytical data for source area monitoring well MW-1 indicates a spike in VOC concentrations starting in 2007. Trends for some VOCs indicate attenuation following the 2007 spike in benzene and MTBE concentrations, other VOCs exhibit sustained rises in concentrations (e.g. naphthalene), and some exhibit little change in concentration (e.g. ethylbenzene) through 2017. Analytical results for the May 3, 2021 monitoring event report detected petroleum constituent concentrations that are less than the concentrations reported in 2017. This across the board reduction of detected VOC concentrations is a positive sign. However, the analytical data set lack sufficient power to forecast the time that may be required for natural attenuation to achieve the CAP stated cleanup goals, the 2L Standard. The cause for the apparent spike in VOC concentrations starting in 2007 at MW-1 has not been identified. In 2016 limited soil sampling was conducted in the source area. No residual petroleum hydrocarbons were detected at the sampled locations within the gasoline UST release source area. Thus, no evidence of a residual secondary source of petroleum constituents in the soil was discovered. With a negligible secondary source in soil, monitored natural attenuation of groundwater is possible. Analytical results for the on-site water supply well continue to report no detections of targeted petroleum hydrocarbons. As an incident with an NCDEQ a High-Risk classification, the pathway to incident closure could include: 1.Connect the on-site water supply well and nearby water supply well users to the available public water supply. This would reduce the NCDEQ incident risk-classification from High-Risk to Low-Risk, and permit closure of the incident following the completion of a Notice of Residual Petroleum. Or, 2.Conduct hot-spot remediation to reduce source area VOC concentrations to levels less than the corresponding 2L Standards. Or, 3.Continue groundwater monitoring to track natural attenuation of the target VOCs until concentrations are less than the corresponding 2L Standards. Preparation of a detailed analysis of each remedial option and probable costs for each was beyond the scope of this task authorization. Considering the apparent limited horizontal extent of the groundwater impacts and no detections of petroleum hydrocarbons in the on-site well, continued reliance on monitored natural attenuation as the remedial measure remains plausible. Accordingly, S&ME recommends monitoring groundwater at wells MW-1 and MW-4, and the on-site water supply well on an annual basis and a review of the potential to connect water supply well users to municipal water. TABLE 1 SUMMARY OF RECENT GROUNDWATER ANALYTICAL RESULTS MCLEANSVILLE FIRE DEPARTMENT MCLEANSVILLE, NORTH CAROLINA S&ME PROJECT NO. 1584-13-129C Well IDSample DateBenzeneEthylbenzeneIsopropylbenzeneMTBENaphthaleneTolueneTotal Xylenes602 602 602 602 602 602 602 MW-1 5/3/2021 52.0 298 19.4 < 10.0 1,110 23.7 398.6 MW-4 5/3/2021 <1.0 <1.0 1.6 11.7 <2.0 <1.0 <2.0 WSW 5/3/2021 <1.0 <1.0 <1.0 <1.0 <2.0 <1.0 <2.0 5,000 84,500 25,000 20,000 6,000 260,000 85,500 1 600 70 20 6 600 500 Notes: Method NCDEQ GCLs Concentrations in bold print exceed NCAC 2L groundwater quality standards NCAC 2L Std. All concentrations in units of mg/l - micrograms per liter = ppb Z:\Shared\SME\Ops\ENV\Projects\2013\1584-13-129C McLeansville FD Groundwater Monitoring_North Carolina\Working Documents\(McLeansville) Data_Updated 20210514.xlsx TABLE 2 SUMMARY OF ANALYTICAL RESULTS FOR GROUNDWATER SAMPLES MCLEANSVILLE FIRE DEPARTMENT MCLEANSVILLE, NORTH CAROLINA S&ME PROJECT NO. 1584-13-129C ID Sample Benzene Chloro-Ethyl-MTBE Toluene Total Total Isopropyl EDB Naph-1,2 dichloro-1,3 dichloro-1,4 dichloro-Lead Date benzene benzene Xylenes BTEX ether thalene benzene benzene benzene 602/6200B 601/602 602/6200B 602/6200B 602/6200B 602/6200B 602/6200B 602/6200B 504 625/602 602/6200B 602/6200B 602/6200B 239.2 6/11/1992 2,030 58.1 2,850 31.6 7,580 11,200 23,660 <1 NA 206 360 116 334 NA 8/25/1995 28,000 <1,000 <1,000 6,200 32,000 <2,000 63,000 <1,000 4.3 250 <1 <1 <1 <5 12/4/1998 7,800 <20 1400 2,900 15,000 9100 33,300 NA <20 NA <20 <20 <20 NA 4/27/1999 640 NA 170 1,400 1,100 1490 3,400 210 NA NA NA NA NA NA 8/12/1999 22 NA 19 330 93 188 322 34 NA NA NA NA NA NA 11/3/1999 120 NA 140 210 340 800 1,400 35 <1 NA <1 <1 <1 NA 5/5/2000 <1 <1 <1 3 <1 2 5 <1 <1 <1 <1 <1 <1 NA 11/14/2000 5 <1 2 3 3 13 23 <1 <0.02 1 <1 <1 <1 NA 5/25/2001 <1 NA <1 <2 <1 <2 all BQL <1 <0.02 <1 NA NA NA NA 8/15/2001 3 NA 9 7 7 25 44 <2.5 <0.02 49 NA NA NA NA 11/13/2001 72*NA 34 8 44 70 220 <2 NA 130 NA NA NA NA 2/6/2002 78 NA 30 15 39 40 187 <5 NA 180 NA NA NA NA 5/2/2002 98 NA 61 41 76 179 414 <20 NA 330 NA NA NA NA 9/19/2002 13 NA 22 21 28 45 108 <5 NA 82 NA NA NA NA 3/31/2003 18 NA 33 28 58 90 199 <8 NA 200 NA NA NA NA 2/19/2004 60 NA 91 <100 210 241 602 <50 NA 610 NA NA NA NA 8/20/2007 388 NA 458 218 1,390 2,008 4,244 <80 NA 1,300 NA NA NA NA 6/23/2008 303 NA 286 <320 479 1,120 2,188 <60 NA 1,810 NA NA NA NA 9/7/2011 239 NA 564 126 889 1,980 3,672 <17.7 NA 2,430 NA NA NA NA 1/2/2014 175 <5.0 493 40.5 448 1,497 2,613 <5 NA 2,070 <5.0 <5.0 <5.0 NA 5/29/2015 199 <10.0 594 26.7 452 1,979 3,224 35.5 NA 2,210 <10.0 <10.0 <10.0 NA 10/6/2016 125 <12.5 435 13.4 142 863.1 1,579 <12.5 NA 2,280 <12.5 <12.5 <12.5 NA 11/16/2017 157 <20.0 593 <20.0 124 1,131.3 2,005 34.1 NA 2,680 <20.0 <20.0 <20.0 NA 5/3/2021 52 <10.0 298 <10.0 23.7 398.6 772 19.4 NA 1,110 <10.0 <10.0 <10.0 NA 1 50 600 20 600 500 -70 0.04 6 20 200 6 15 * Mass spectral screening confirms the presence of benzene. However, due to a co-eluting non-target compounds, the benzene concentration measured by this method is falsely high. A GC/MS method is required for accurate benzene measurement in this matrix. Green shaded cells represent time frame for active remediation MW-1 NCAC 2L Std. All concentrations in units of mg/l - micrograms per liter = ppb Notes: Only detected analyses are displayed in the table NA = not analyzed Concentrations in bold print exceed NCAC 2L groundwater quality standards Method Z:\Shared\SME\Ops\ENV\Projects\2013\1584-13-129C McLeansville FD Groundwater Monitoring_North Carolina\Working Documents\(McLeansville) Data_Updated 20210514.xlsx TABLE 2 SUMMARY OF ANALYTICAL RESULTS FOR GROUNDWATER SAMPLES MCLEANSVILLE FIRE DEPARTMENT MCLEANSVILLE, NORTH CAROLINA S&ME PROJECT NO. 1584-13-129C ID Sample Benzene Chloro-Ethyl-MTBE Toluene Total Total Isopropyl EDB Naph-1,2 dichloro-1,3 dichloro-1,4 dichloro-Lead Date benzene benzene Xylenes BTEX ether thalene benzene benzene benzene 602/6200B 601/602 602/6200B 602/6200B 602/6200B 602/6200B 602/6200B 602/6200B 504 625/602 602/6200B 602/6200B 602/6200B 239.2 MW-1 Method 9/22/1992 4,690 <5 639 <50 5,830 3,290 14,449 NA NA 10.8 <5 <5 127 NA 8/25/1995 5,600 <100 <100 1,200 5,300 1,000 12,000 <100 0.56 <10 <1 <1 <1 <5 12/4/1998 4,400 <10 570 1,600 3,400 1,900 10,270 580 <10 NA <10 <10 <10 NA 4/27/1999 1,300 NA 220 2,100 2,400 3,900 7,820 650 NA NA NA NA NA NA 8/12/1999 840 NA 140 1,300 530 1,360 2,870 310 NA NA NA NA NA NA 11/3/1999 1,400 NA 350 1,300 450 1,500 3,700 420 <1 NA <1 <1 <1 NA 5/5/2000 100 <1 140 310 210 710 1,160 <20 <1 47 <1 <1 <1 NA 11/14/2000 130 <1 130 470 50 245 555 120 0.03 110 <1 <1 <1 NA 5/25/2001 34 NA 140 160 48 243 465 47 <0.02 79 NA NA NA NA 8/15/2001 27 NA 150 110 21 140 338 62 <0.02 110 NA NA NA NA 11/13/2001 34 NA 98 85 18 60 210 27 NA 110 NA NA NA NA 2/6/2002 23 NA 27 180 <8 19 69 35 NA 49 NA NA NA NA 5/2/2002 8 NA 14 48 5 32 59 18 NA 15 NA NA NA NA 9/19/2002 2 NA 4 66 <1 2 8 11 NA 9 NA NA NA NA 3/31/2003 5.3 NA 49 89 2.7 57.7 114.7 30 NA 46 NA NA NA NA 2/19/2004 2.3 NA 12 72 <1 3.4 17.7 18 NA 9.1 NA NA NA NA 8/22/2007 2.73 NA <1 17.9 <1 <2 2.73 2.81 NA 2.84 NA NA NA NA 6/23/2008 1.70 NA 2.14 10.7 <1 <2 3.84 1.98 NA 2.45 NA NA NA NA 9/7/2011 1.66 NA <0.932 36.5 2.20 <1.91 3.86 6.77 NA <4.0 NA NA NA NA 1/2/2014 <1 <1 <1 58.3 <1 <2 all BQL 5.7 NA <2.0 <1 <1 <1 NA 5/29/2015 <0.50 <0.50 <0.50 5.7 <0.50 <1.50 all BQL 0.56 NA <2.0 <0.50 <0.50 <0.50 NA 11/16/2017 <1.0 <1.0 <1.0 91.3 <1.0 <2.0 all BQL 9.1 NA <2.0 <1.0 <1.0 <1.0 NA 5/3/2021 <1.0 <1.0 <1.0 11.7 <1.0 <2.0 all BQL 1.6 NA <2.0 <1.0 <1.0 <1.0 NA 1 50 600 20 600 500 -70 0.04 6 20 200 6 15 * Mass spectral screening confirms the presence of benzene. However, due to a co-eluting non-target compounds, the benzene concentration measured by this method is falsely high. A GC/MS method is required for accurate benzene measurement in this matrix. Notes: Only detected analyses are displayed in the table All concentrations in units of mg/l - micrograms per liter = ppb NCAC 2L Std. MW-4 NA = not analyzed Concentrations in bold print exceed NCAC 2L groundwater quality standards Z:\Shared\SME\Ops\ENV\Projects\2013\1584-13-129C McLeansville FD Groundwater Monitoring_North Carolina\Working Documents\(McLeansville) Data_Updated 20210514.xlsx TABLE 2 SUMMARY OF ANALYTICAL RESULTS FOR GROUNDWATER SAMPLES MCLEANSVILLE FIRE DEPARTMENT MCLEANSVILLE, NORTH CAROLINA S&ME PROJECT NO. 1584-13-129C ID Sample Benzene Chloro-Ethyl-MTBE Toluene Total Total Isopropyl EDB Naph-1,2 dichloro-1,3 dichloro-1,4 dichloro-Lead Date benzene benzene Xylenes BTEX ether thalene benzene benzene benzene 602/6200B 601/602 602/6200B 602/6200B 602/6200B 602/6200B 602/6200B 602/6200B 504 625/602 602/6200B 602/6200B 602/6200B 239.2 MW-1 Method 9/22/1992 <1 <1 <1 <10 <1 <2 all BQL NA NA <10 <1 <1 <1 NA 8/25/1995 <1 <1 <1 <10 <1 <2 all BQL <1 <0.02 <10 <1 <1 <1 <5 12/4/1998 <1 <1 <1 <10 <1 <2 all BQL <1 <1 NA <1 <1 <1 NA 4/27/1999 <1 NA <1 <2 <1 <2 all BQL <1 <1 NA NA NA NA NA 8/12/1999 <1 NA <1 <2 <1 <2 all BQL <1 NA NA NA NA NA NA 11/3/1999 <1 NA <1 <2 <1 <2 all BQL <1 <1 NA <1 <1 <1 NA 5/5/2000 <1 NA <1 <2 <1 <2 all BQL <1 <1 <1 NA NA NA NA 11/14/2000 <1 NA <1 <2 <1 <2 all BQL <1 NA <1 NA NA NA NA 8/22/2007 <1 NA <1 <2 <1 <2 all BQL <1 NA <1 NA NA NA NA 6/23/2008 <1 NA <1 <2 <1 <2 all BQL <1 NA <1 NA NA NA NA 9/7/2011 <0.233 NA <0.233 <0.440 <0.226 <0.478 all BQL <0.221 NA <1.0 NA NA NA NA 1/2/2014 <1 <1 <1 <1 <1 <2 all BQL <1 NA <2.0 <1 <1 <1 NA 5/29/2015 <0.50 <0.50 <0.50 <0.50 <0.50 <1.5 all BQL <0.50 NA <0.50 <0.50 <0.50 <0.50 NA MW-6 8/25/1995 <1 <1 <1 <10 <1 <2 all BQL <1 <0.02 <10 <1 <1 <1 <5 12/4/1998 <1 <1 <1 <10 <1 <2 all BQL <1 <1 NA <1 <1 <1 NA 4/27/1999 <1 NA <1 <10 <1 <2 all BQL <1 NA NA NA NA NA NA 8/12/1999 <1 NA <1 <2 <1 <2 all BQL <1 NA NA NA NA NA NA 11/3/1999 <1 NA <1 <2 <1 <2 all BQL <1 <1 NA <1 <1 <1 NA 11/14/2000 <1 NA <1 <2 <1 <2 all BQL <1 NA <1 NA NA NA NA MW-7 8/25/1995 95 <1 <1 <1 <1 <2 99 <2 <0.02 <10 <1 <1 <1 <5 4/22/1996 63 <1 <1 9 <1 <2 67 4 <0.02 <10 <1 <1 <1 20.8 MW-8 4/22/1996 <1 <1 <1 <2 <1 <2 all BQL <1 <0.02 <10 <1 <1 <1 7.26 12/4/1998 <1 <1 <1 <2 <1 <2 all BQL <1 <1 NA <1 <1 <1 NA 11/3/1999 <1 NA <1 <2 <1 <2 all BQL <1 <1 NA <1 <1 <1 NA 11/14/2000 <1 NA <1 <2 <1 <2 all BQL <1 NA <1 NA NA NA NA 5/25/2001 <1 NA <1 <2 <1 <2 all BQL <1 NA <1 NA NA NA NA 8/15/2001 <1 NA <1 <2 <1 <2 all BQL <1 NA <1 NA NA NA NA 11/13/2001 <1 NA <1 <2 <1 <2 all BQL <1 NA <1 NA NA NA NA 2/6/2002 <1 NA <1 <2 <1 <2 all BQL <1 NA <1 NA NA NA NA 5/2/2002 <1 NA <1 <2 <1 <2 all BQL <1 NA <1 NA NA NA NA 3/31/2003 <1 NA <1 <2 <1 <2 all BQL <1 NA <1 NA NA NA NA 1 50 600 20 600 500 -70 0.04 6 20 200 6 15 Green shaded cells represent time frame for active remediation NCAC 2L Std. NA = not analyzed Concentrations in bold print exceed NCAC 2L groundwater quality standards All concentrations in units of mg/l - micrograms per liter = ppbNotes: Only detected analyses are displayed in the table MW-5 Z:\Shared\SME\Ops\ENV\Projects\2013\1584-13-129C McLeansville FD Groundwater Monitoring_North Carolina\Working Documents\(McLeansville) Data_Updated 20210514.xlsx TABLE 2 SUMMARY OF ANALYTICAL RESULTS FOR GROUNDWATER SAMPLES MCLEANSVILLE FIRE DEPARTMENT MCLEANSVILLE, NORTH CAROLINA S&ME PROJECT NO. 1584-13-129C ID Sample Benzene Chloro-Ethyl-MTBE Toluene Total Total Isopropyl EDB Naph-1,2 dichloro-1,3 dichloro-1,4 dichloro-Lead Date benzene benzene Xylenes BTEX ether thalene benzene benzene benzene 602/6200B 601/602 602/6200B 602/6200B 602/6200B 602/6200B 602/6200B 602/6200B 504 625/602 602/6200B 602/6200B 602/6200B 239.2 MW-1 Method MW-2 9/22/1992 <1 <1 <1 <10 <1 <2 all BQL NA NA <10 <1 <1 <1 NA 8/25/1995 <1 <1 <1 <1 <1 <2 all BQL <1 0.02 <10 <1 <1 <1 <5 12/4/1998 <1 <1 <1 <1 <1 <2 all BQL <1 <1 NA <1 <1 <1 NA 11/3/1999 <1 NA <1 <2 <1 <2 all BQL <1 <1 NA <1 <1 <1 NA 11/14/2000 <1 NA <1 <2 <1 <2 all BQL <1 NA <1 NA NA NA NA MW-3 9/22/1992 <1 <1 <1 <10 <1 <2 all BQL NA NA <10 <1 <1 <1 NA 8/25/1995 <1 <1 <1 <1 <1 <2 all BQL <1 <0.02 <10 <1 <1 <1 <5 12/4/1998 <1 <1 <1 <1 <1 <2 all BQL <1 <1 NA <1 <1 <1 NA 4/27/1999 <1 NA <1 <2 <1 <2 all BQL <1 <1 NA NA NA NA NA 8/12/1999 <1 NA <1 <2 <1 <2 all BQL <1 NA NA NA NA NA NA 11/3/1999 <1 NA <1 <2 <1 <2 all BQL <1 <1 NA <1 <1 <1 NA 11/14/2000 <1 NA <1 <2 <1 <2 all BQL <1 NA 6 NA NA NA NA 2/19/2004 <1 NA <1 <2 <1 <2 all BQL <1 NA 1.1 NA NA NA NA MW-9 4/27/1999 <1 NA <1 <2 <1 <2 all BQL <1 NA NA NA NA NA NA 8/12/1999 <1 NA <1 <2 <1 <2 all BQL <1 NA NA NA NA NA NA 11/14/2000 <1 NA <1 <2 <1 <2 all BQL <1 NA <1 NA NA NA NA 5/25/2001 <1 NA <1 <2 <1 <2 all BQL <1 NA <1 NA NA NA NA 8/15/2001 <1 NA <1 <2 <1 <2 all BQL <1 NA <1 NA NA NA NA 11/13/2001 <1 NA <1 <2 <1 <2 all BQL <1 NA <1 NA NA NA NA 2/6/2002 <1 NA <1 <2 <1 <2 all BQL <1 NA <1 NA NA NA NA 5/2/2002 <1 NA <1 <2 <1 <2 all BQL <1 NA <1 NA NA NA NA 3/31/2003 <1 NA <1 <2 <1 <2 all BQL <1 NA <1 NA NA NA NA 2/19/2004 <1 NA <1 <2 <2 <2 all BQL <1 NA <1 NA NA NA NA 1 50 600 20 600 500 -70 0.04 6 20 200 6 15 Green shaded cells represent time frame for active remediation NA = not analyzed Concentrations in bold print exceed NCAC 2L groundwater quality standards Notes: Only detected analyses are displayed in the table All concentrations in units of mg/l - micrograms per liter = ppb NCAC 2L Std. Z:\Shared\SME\Ops\ENV\Projects\2013\1584-13-129C McLeansville FD Groundwater Monitoring_North Carolina\Working Documents\(McLeansville) Data_Updated 20210514.xlsx WELL ID DATE TOC ELEVATION (feet)DEPTH TO WATER (feet) GROUNDWATER ELEVATION (feet) 24-Aug-95 97.95 15.82 82.13 04-Dec-98 97.95 18.13 79.82 27-Apr-99 97.95 14.82 83.13 24-May-99 97.95 14.65 83.30 12-Aug-99 97.95 15.26 82.69 05-Oct-99 97.95 12.84 85.11 03-Nov-99 97.95 13.25 84.70 03-Dec-99 97.95 9.71 88.24 06-Jan-00 97.95 14.09 83.86 16-Feb-00 97.95 12.70 85.25 15-Mar-00 97.95 4.15 93.80 17-Apr-00 97.95 13.80 84.15 05-May-00 97.95 10.94 87.01 06-Jun-00 97.95 12.46 85.49 06-Jul-00 97.95 6.39 91.56 14-Nov-00 97.95 11.97 85.98 24-May-01 97.95 12.59 85.36 15-Aug-01 97.95 14.95 83.00 13-Nov-01 97.95 16.90 81.05 06-Feb-02 97.95 15.02 82.93 02-May-02 97.95 14.51 83.44 19-Sep-02 97.95 16.70 81.25 31-Mar-03 97.95 8.28 89.67 19-Feb-04 97.95 10.42 87.53 20-Aug-07 97.95 16.12 81.83 23-Jun-08 97.95 14.99 82.96 07-Sep-11 97.95 16.60 81.35 02-Jan-14 97.95 10.86 87.09 29-May-15 97.95 12.92 85.03 06-Oct-16 97.95 15.87 82.08 16-Nov-17 97.95 15.84 82.11 03-May-21 97.95 9.18 88.77 MW-2 24-Aug-95 98.50 15.47 83.03 04-Dec-98 98.50 17.53 80.97 03-Nov-99 98.50 12.63 85.87 03-Dec-99 98.50 13.06 85.44 16-Feb-00 98.50 10.42 88.08 05-May-00 98.50 9.97 88.53 14-Nov-00 98.50 12.53 85.97 19-Feb-04 98.50 9.51 88.99 MW-3 24-Aug-95 97.80 15.89 81.91 04-Dec-98 97.80 17.65 80.15 27-Apr-99 97.80 13.21 84.59 24-May-99 97.80 11.97 85.83 12-Aug-99 97.80 15.77 82.03 05-Oct-99 97.80 12.35 85.45 03-Nov-99 97.80 12.82 84.98 03-Dec-99 97.80 13.03 84.77 16-Feb-00 97.80 10.63 87.17 17-Apr-00 97.80 9.99 87.81 05-May-00 97.80 10.61 87.19 06-Jun-00 97.80 12.58 85.22 06-Jul-00 97.80 12.20 85.60 14-Nov-00 97.80 13.02 84.78 19-Feb-04 97.80 10.16 87.64 S&ME PROJECT NO. 1584-13-129C HISTORIAL GROUNDWATER ELEVATION DATA TABLE 3 MCLEANSVILLE FIRE DEPARTMENT MCLEANSVILLE, NORTH CAROLINA MW-1 Z:\Shared\SME\Ops\ENV\Projects\2013\1584-13-129C McLeansville FD Groundwater Monitoring_North Carolina\Working Documents\(McLeansville) Data_Updated 20210514.xlsx WELL ID DATE TOC ELEVATION (feet)DEPTH TO WATER (feet) GROUNDWATER ELEVATION (feet) S&ME PROJECT NO. 1584-13-129C HISTORIAL GROUNDWATER ELEVATION DATA TABLE 3 MCLEANSVILLE FIRE DEPARTMENT MCLEANSVILLE, NORTH CAROLINA MW-1 24-Aug-95 97.33 15.37 81.96 04-Dec-98 97.33 17.04 80.29 27-Apr-99 97.33 12.98 84.35 24-May-99 97.33 11.97 85.36 12-Aug-99 97.33 16.04 81.29 05-Oct-99 97.33 14.93 82.40 03-Nov-99 97.33 14.46 82.87 03-Dec-99 97.33 15.42 81.91 06-Jan-00 97.33 12.93 84.40 16-Feb-00 97.33 10.49 86.84 15-Mar-00 97.33 11.55 85.78 17-Apr-00 97.33 9.88 87.45 05-May-00 97.33 10.35 86.98 06-Jun-00 97.33 12.50 84.83 06-Jul-00 97.33 12.44 84.89 14-Nov-00 97.33 15.21 82.12 24-May-01 97.33 13.59 83.74 15-Aug-01 97.33 14.29 83.04 13-Nov-01 97.33 16.24 81.09 06-Feb-02 97.33 14.40 82.93 02-May-02 97.33 13.99 83.34 19-Sep-02 97.33 16.10 81.23 31-Mar-03 97.33 8.98 88.35 19-Feb-04 97.33 9.98 87.35 20-Aug-07 97.33 15.57 81.76 23-Jun-08 97.33 14.31 83.02 07-Sep-11 97.33 15.87 81.46 02-Jan-14 97.33 10.65 86.68 29-May-15 97.33 12.43 84.90 16-Nov-17 97.33 15.28 82.05 03-May-21 97.33 9.14 88.19 MW-5 24-Aug-95 96.15 13.84 82.31 04-Dec-98 96.15 16.19 79.96 27-Apr-99 96.15 11.80 84.35 24-May-99 96.15 NM NM 12-Aug-99 96.15 14.03 82.12 05-Oct-99 96.15 10.88 85.27 03-Nov-99 96.15 11.11 85.04 03-Dec-99 96.15 11.66 84.49 16-Feb-00 96.15 9.36 86.79 17-Apr-00 96.15 9.69 86.46 05-May-00 96.15 8.85 87.30 14-Nov-00 96.15 11.02 85.13 19-Feb-04 96.15 11.08 85.07 20-Aug-07 96.15 14.25 81.90 23-Jun-08 96.15 13.08 83.07 07-Sep-11 96.15 14.88 81.27 02-Jan-14 96.15 10.49 85.66 29-May-15 96.15 11.45 84.70 MW-4 Z:\Shared\SME\Ops\ENV\Projects\2013\1584-13-129C McLeansville FD Groundwater Monitoring_North Carolina\Working Documents\(McLeansville) Data_Updated 20210514.xlsx WELL ID DATE TOC ELEVATION (feet)DEPTH TO WATER (feet) GROUNDWATER ELEVATION (feet) S&ME PROJECT NO. 1584-13-129C HISTORIAL GROUNDWATER ELEVATION DATA TABLE 3 MCLEANSVILLE FIRE DEPARTMENT MCLEANSVILLE, NORTH CAROLINA MW-1MW-6 24-Aug-95 86.97 6.30 80.67 04-Dec-98 86.97 7.53 79.44 27-Apr-99 86.97 3.24 83.73 12-Aug-99 86.97 5.94 81.03 03-Nov-99 86.97 2.82 84.15 03-Dec-99 86.97 3.01 83.96 16-Feb-00 86.97 0.45 86.52 05-May-00 86.97 0.81 86.16 14-Nov-00 86.97 3.10 83.87 MW-7 24-Aug-95 97.97 14.53 83.44 24-Aug-95 98.04 Not measured Not measured 04-Dec-98 98.04 17.86 80.18 27-Apr-99 98.04 Not measured Not measured 24-May-99 98.04 Not measured Not measured 12-Aug-99 98.04 Not measured Not measured 05-Oct-99 98.04 13.04 85.00 03-Nov-99 98.04 13.06 84.98 03-Dec-99 98.04 13.52 84.52 16-Feb-00 98.04 11.57 86.47 17-Apr-00 98.04 11.51 86.53 05-May-00 98.04 10.79 87.25 06-Jun-00 98.04 12.25 85.79 14-Nov-00 98.04 12.76 85.28 24-May-01 98.04 12.30 85.74 15-Aug-01 98.04 14.67 83.37 13-Nov-01 98.04 16.73 81.31 06-Feb-02 98.04 15.18 82.86 02-May-02 98.04 14.42 83.62 19-Feb-04 98.04 10.34 87.70 MW-9 24-Aug-95 97.14 NM NM 04-Dec-98 97.14 15.89 81.25 27-Apr-99 97.14 13.08 84.06 24-May-99 97.14 11.75 85.39 12-Aug-99 97.14 15.28 81.86 05-Oct-99 97.14 12.06 85.08 03-Dec-99 97.14 12.83 84.31 16-Feb-00 97.14 10.49 86.65 17-Apr-00 97.14 10.25 86.89 05-May-00 97.14 9.93 87.21 06-Jun-00 97.14 11.73 85.41 06-Jul-00 97.14 11.66 85.48 14-Nov-00 97.14 12.21 84.93 24-May-01 97.14 11.75 85.39 15-Aug-01 97.14 14.28 82.86 13-Nov-01 97.14 15.95 81.19 06-Feb-02 97.14 14.40 82.74 02-May-02 97.14 13.80 83.34 31-Mar-03 97.14 6.77 90.37 19-Feb-04 97.14 9.61 87.53 MW-8 Z:\Shared\SME\Ops\ENV\Projects\2013\1584-13-129C McLeansville FD Groundwater Monitoring_North Carolina\Working Documents\(McLeansville) Data_Updated 20210514.xlsx WELL ID TOTAL WELL DEPTH (feet) WELL SCREEN LENGTH (feet) TOP OF CASING ELEVATION (feet) MW-1 25.0 10 97.95 MW-2 25.0 15 98.50 MW-3 20.0 10 Not Located MW-4 20.0 10 97.33 MW-5 20.0 10 96.15 MW-6 21.0 10 86.97 MW-7**51.0 5 97.97 MW-8 NM 10 Abandoned MW-9 20.0 10 Destroyed Notes: ns = Not surveyed NM = Not measured ** = Well MW-7 converted and currently configures as a groundwater air sparge well MCLEANSVILLE FIRE DEPARTMENT S&ME PROJECT NO. 1584-13-129C TABLE 4 SUMMARY OF WELL CONSTRUCTION DETAILS MCLEANSVILLE, NORTH CAROLINA MAP ID Address Property Owner - Address Approximate Distance From Source Area (feet)Comment 1 5333 Frieden Church Rd. Charles Terry - 2917 Rogers Rd, Graham, NC 27353 370 House with well visible, no water account 2 5335 Frieden Church Rd. Charles Terry - 2917 Rogers Rd., Graham, NC 27353 450 Business (Lynn's Furniture Gallery) with well visible, no water account 3 5609 Bethel Church Rd. Cathy Justis - 5335 Bethel Church Rd., McLeansville NC, 27301 940 House, no well visible, no water account 4 5322 McLeansville Rd. Kim & Sharon Foust - 5322 McLeansville Rd., McLeansville NC, 27301 700 House, no well visible, no water account 5 5304 Frieden Church Rd. Robert Payne - P.O. Box 100, McLeansville NC, 27301 575 Duplex, new well visible, no water account 6 5212 Frieden Church Rd. Herman Stanley - 5312 Frieden Church Rd., McLeansville NC, 27301 850 House with well visible, no water account 7 5314 Frieden Church Rd. John & Emma Jones - 5314 Frieden Church Rd., McLeansville NC, 27301 400 House, no well visible, no water account 11 5316 Frieden Church Rd. David & Salley Jones - 5316 Frieden Church Rd., McLeansville NC, 27301 350 House, no well visible, no water account 8 5318 Frieden Church Rd. Mary Fields - 5318 Frieden Church Rd., McLeansville NC, 27301 250 House, no well visible, no water account 9 5320 Frieden Church Rd. John & Galdys Clapp - 5320 Frieden Church Rd., McLeansville NC, 27301 200 House, well visible & no water account 10 5326 Frieden Church Rd. McLeansville Fire Department - 5326 Frieden Church Rd., McLeansville, NC 27301 170 On Well, water meter observed, no water account Receptor Survey Updated in May 2015 TABLE 5 WATER SUPPLY WELL RECEPTOR SURVEY SUMMARY (2015) MCLEANSVILLE FIRE DEPARTMENT MCLEANSVILLE, NORTH CAROLINA S&ME PROJECT NO. 1584-13-129C Z:\Shared\SME\Ops\ENV\Projects\2013\1584-13-129C McLeansville FD Groundwater Monitoring_North Carolina\Working Documents\(McLeansville) Data_Updated 20210514.xlsx SITEFIGURE NO.Drawing path: R:\CADData\Greensboro\1584\2013\13-129 - McLEANSVILLE FIRE DEPARTMENT\C\MFD Site Plan.dwg PROJECT NUMBERDATE:SCALE:020004000 (IN FEET)GRAPHIC SCALE (IN FEET)GRAPHIC SCALEMcLEANSVILLE FIRE DEPARTMENT McLEANSVILLE, NORTH CAROLINA1MAY 2021VICINITY MAPAS SHOWN1584-13-129CN N FRAMEMW-6ASW-2MW-5E Q U I P . A R E A BLDGMW-1VEW-2MW-4ASW-3ASW-1MW-9METALVEW-1A S T MW-8BUILDINGMW-3McLEANSVILLEFIRE DEPT.FIRE DEPT.MW-2PHIPPS(ABANDONED)(DESTROYED)FORMERB-1B-2CLAPP WELL(ABANDONED) KEY - MONITORING WELL- SOIL VAPOR EXTRACTION WELL- AIR SPARGE WELL- WATER SUPPLY WELL- VAULT- TRENCH LINE- SOIL BORING LOCATION (10-6-16)FREIDEN CHURCH RD BUILDINGMcLEANSVILLEFIRE DEPT.CURRENTFORMER USTBASIN- MICROGRAMS PER LITERug/LMW-1ug/LBenzene52Naphthalene1,110WSWug/LAll < 2L StandardFIGURE NO.Drawing path: R:\CADData\Greensboro\1584\2013\13-129 - McLEANSVILLE FIRE DEPARTMENT\C\MFD Site Plan.dwg PROJECT NUMBERDATE:SCALE:04080 (IN FEET)GRAPHIC SCALE (IN FEET)GRAPHIC SCALEMcLEANSVILLE FIRE DEPARTMENT McLEANSVILLE, NORTH CAROLINA2MAY 2021CONSTITUENT MAPAS SHOWN1584-13-129CNMW-4ug/LAll < 2L Standard 657891110234XXXXXLEGEND- WATER SUPPLY WELL LOCATION- HOUSE REMOVED FOR HIGHWAY CONSTRUCTIONSOURCE: 2014 AERIAL PHOTOGRAPH OBTAINED FROM http://data.nconemap.gov.2015 PARCEL DATA OBTAINED GROM THE GUILFORD COUNTY GIS WEBSITE.FREIDEN CHURCH RDMc L EAN S V I L L E RD EASTHURST RDRANTHURST RDBIRCH C R E E K R D BETHEL CHURCH RD HARVEST RDMcLEANSVILLEELEMENTARYSCHOOL1 , 00 0 f t FIGURE NO.Drawing path: R:\CADData\Greensboro\1584\2013\13-129 - McLEANSVILLE FIRE DEPARTMENT\C\MFD Receptor Map.dwg PROJECT NUMBERDATE:SCALE:0400800 (IN FEET)GRAPHIC SCALE (IN FEET)GRAPHIC SCALEMcLEANSVILLE FIRE DEPARTMENT McLEANSVILLE, NORTH CAROLINA3MAY 2021UPDATED RECEPTOR SURVEY MAPAS SHOWN1584-13-129CN Attachments Attachment I – Analytical Reports #=CL# May 11, 2021 LIMS USE: FR - ED HENRIQUES LIMS OBJECT ID: 92537129 92537129 Project: Pace Project No.: RE: Mr. Ed Henriques S&ME, Inc. 8646 West Market Street Suite 105 Greensboro, NC 27409 McLeansville Fire Department Dear Mr. Henriques: Enclosed are the analytical results for sample(s) received by the laboratory on May 05, 2021. The results relate only to the samples included in this report. Results reported herein conform to the applicable TNI/NELAC Standards and the laboratory's Quality Manual, where applicable, unless otherwise noted in the body of the report. The test results provided in this final report were generated by each of the following laboratories within the Pace Network: • Pace Analytical Services - Charlotte If you have any questions concerning this report, please feel free to contact me. Sincerely, Angela Baioni angela.baioni@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 18 #=CP# CERTIFICATIONS Pace Project No.: Project: 92537129 McLeansville Fire Department 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 18 #=SS# SAMPLE SUMMARY Pace Project No.: Project: 92537129 McLeansville Fire Department Lab ID Sample ID Matrix Date Collected Date Received 92537129001 MW-1 Water 05/03/21 09:25 05/05/21 10:35 92537129002 MW-4 Water 05/03/21 10:05 05/05/21 10:35 92537129003 WSW-1 Water 05/03/21 10:45 05/05/21 10:35 92537129004 Trip Blank Water 05/03/21 00:00 05/05/21 10:35 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 18 #=SA# SAMPLE ANALYTE COUNT Pace Project No.: Project: 92537129 McLeansville Fire Department Lab ID Sample ID Method Analytes Reported LaboratoryAnalysts 92537129001 MW-1 SM 6200B 16 PASI-CSAS 92537129002 MW-4 SM 6200B 16 PASI-CSAS 92537129003 WSW-1 SM 6200B 16 PASI-CSAS 92537129004 Trip Blank SM 6200B 16 PASI-CSAS PASI-C = Pace Analytical Services - Charlotte 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 18 #=NA# PROJECT NARRATIVE Pace Project No.: Project: 92537129 McLeansville Fire Department Method: Client:S&ME - Greensboro SM 6200B Date:May 11, 2021 Description:602 Volatiles by Method 6200 General Information: 4 samples were analyzed for SM 6200B by Pace Analytical Services Charlotte. 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 ofthis 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. QC Batch: 618938 A matrix spike and/or matrix spike duplicate (MS/MSD) were performed on the following sample(s): 92537129001 M1: Matrix spike recovery exceeded QC limits. Batch accepted based on laboratory control sample (LCS) recovery. • MS (Lab ID: 3256600) • Diisopropyl ether • Naphthalene • MSD (Lab ID: 3256601) • Diisopropyl ether • Naphthalene 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 5 of 18 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92537129 McLeansville Fire Department Sample:MW-1 Lab ID:92537129001 Collected:05/03/21 09:25 Received:05/05/21 10:35 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 602 Volatiles by Method 6200 Benzene 52.0 ug/L 05/07/21 18:31 71-43-210.0 3.4 10 Chlorobenzene <10.0 ug/L 05/07/21 18:31 108-90-710.0 2.8 10 1,2-Dichlorobenzene <10.0 ug/L 05/07/21 18:31 95-50-110.0 3.4 10 1,3-Dichlorobenzene <10.0 ug/L 05/07/21 18:31 541-73-110.0 3.4 10 1,4-Dichlorobenzene <10.0 ug/L 05/07/21 18:31 106-46-710.0 3.3 10 Diisopropyl ether <10.0 ug/L 05/07/21 18:31 108-20-3 M110.0 3.1 10 Ethylbenzene 298 ug/L 05/07/21 18:31 100-41-410.0 3.0 10 Isopropylbenzene (Cumene)19.4 ug/L 05/07/21 18:31 98-82-810.0 3.3 10 Methyl-tert-butyl ether <10.0 ug/L 05/07/21 18:31 1634-04-410.0 4.2 10 Naphthalene 1110 ug/L 05/07/21 18:31 91-20-3 M120.0 6.4 10 Toluene 23.7 ug/L 05/07/21 18:31 108-88-310.0 4.8 10 m&p-Xylene 382 ug/L 05/07/21 18:31 179601-23-120.0 7.1 10 o-Xylene 16.6 ug/L 05/07/21 18:31 95-47-610.0 3.4 10 Surrogates 4-Bromofluorobenzene (S)98 %05/07/21 18:31 460-00-470-130 10 1,2-Dichloroethane-d4 (S)101 %05/07/21 18:31 17060-07-070-130 10 Toluene-d8 (S)104 %05/07/21 18:31 2037-26-570-130 10 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 05/11/2021 01:24 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 6 of 18 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92537129 McLeansville Fire Department Sample:MW-4 Lab ID:92537129002 Collected:05/03/21 10:05 Received:05/05/21 10:35 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 602 Volatiles by Method 6200 Benzene <1.0 ug/L 05/07/21 01:02 71-43-21.0 0.34 1 Chlorobenzene <1.0 ug/L 05/07/21 01:02 108-90-71.0 0.28 1 1,2-Dichlorobenzene <1.0 ug/L 05/07/21 01:02 95-50-11.0 0.34 1 1,3-Dichlorobenzene <1.0 ug/L 05/07/21 01:02 541-73-11.0 0.34 1 1,4-Dichlorobenzene <1.0 ug/L 05/07/21 01:02 106-46-71.0 0.33 1 Diisopropyl ether 1.6 ug/L 05/07/21 01:02 108-20-31.0 0.31 1 Ethylbenzene <1.0 ug/L 05/07/21 01:02 100-41-41.0 0.30 1 Isopropylbenzene (Cumene)<1.0 ug/L 05/07/21 01:02 98-82-81.0 0.33 1 Methyl-tert-butyl ether 11.7 ug/L 05/07/21 01:02 1634-04-41.0 0.42 1 Naphthalene <2.0 ug/L 05/07/21 01:02 91-20-32.0 0.64 1 Toluene <1.0 ug/L 05/07/21 01:02 108-88-31.0 0.48 1 m&p-Xylene <2.0 ug/L 05/07/21 01:02 179601-23-12.0 0.71 1 o-Xylene <1.0 ug/L 05/07/21 01:02 95-47-61.0 0.34 1 Surrogates 4-Bromofluorobenzene (S)90 %05/07/21 01:02 460-00-470-130 1 1,2-Dichloroethane-d4 (S)103 %05/07/21 01:02 17060-07-070-130 1 Toluene-d8 (S)101 %05/07/21 01:02 2037-26-570-130 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 05/11/2021 01:24 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 7 of 18 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92537129 McLeansville Fire Department Sample:WSW-1 Lab ID:92537129003 Collected:05/03/21 10:45 Received:05/05/21 10:35 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 602 Volatiles by Method 6200 Benzene <1.0 ug/L 05/07/21 00:44 71-43-21.0 0.34 1 Chlorobenzene <1.0 ug/L 05/07/21 00:44 108-90-71.0 0.28 1 1,2-Dichlorobenzene <1.0 ug/L 05/07/21 00:44 95-50-11.0 0.34 1 1,3-Dichlorobenzene <1.0 ug/L 05/07/21 00:44 541-73-11.0 0.34 1 1,4-Dichlorobenzene <1.0 ug/L 05/07/21 00:44 106-46-71.0 0.33 1 Diisopropyl ether <1.0 ug/L 05/07/21 00:44 108-20-31.0 0.31 1 Ethylbenzene <1.0 ug/L 05/07/21 00:44 100-41-41.0 0.30 1 Isopropylbenzene (Cumene)<1.0 ug/L 05/07/21 00:44 98-82-81.0 0.33 1 Methyl-tert-butyl ether <1.0 ug/L 05/07/21 00:44 1634-04-41.0 0.42 1 Naphthalene <2.0 ug/L 05/07/21 00:44 91-20-32.0 0.64 1 Toluene <1.0 ug/L 05/07/21 00:44 108-88-31.0 0.48 1 m&p-Xylene <2.0 ug/L 05/07/21 00:44 179601-23-12.0 0.71 1 o-Xylene <1.0 ug/L 05/07/21 00:44 95-47-61.0 0.34 1 Surrogates 4-Bromofluorobenzene (S)95 %05/07/21 00:44 460-00-470-130 1 1,2-Dichloroethane-d4 (S)104 %05/07/21 00:44 17060-07-070-130 1 Toluene-d8 (S)102 %05/07/21 00:44 2037-26-570-130 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 05/11/2021 01:24 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 8 of 18 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92537129 McLeansville Fire Department Sample:Trip Blank Lab ID:92537129004 Collected:05/03/21 00:00 Received:05/05/21 10:35 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit Report Analytical Method: SM 6200B Pace Analytical Services - Charlotte 602 Volatiles by Method 6200 Benzene <1.0 ug/L 05/07/21 00:26 71-43-21.0 0.34 1 Chlorobenzene <1.0 ug/L 05/07/21 00:26 108-90-71.0 0.28 1 1,2-Dichlorobenzene <1.0 ug/L 05/07/21 00:26 95-50-11.0 0.34 1 1,3-Dichlorobenzene <1.0 ug/L 05/07/21 00:26 541-73-11.0 0.34 1 1,4-Dichlorobenzene <1.0 ug/L 05/07/21 00:26 106-46-71.0 0.33 1 Diisopropyl ether <1.0 ug/L 05/07/21 00:26 108-20-31.0 0.31 1 Ethylbenzene <1.0 ug/L 05/07/21 00:26 100-41-41.0 0.30 1 Isopropylbenzene (Cumene)<1.0 ug/L 05/07/21 00:26 98-82-81.0 0.33 1 Methyl-tert-butyl ether <1.0 ug/L 05/07/21 00:26 1634-04-41.0 0.42 1 Naphthalene <2.0 ug/L 05/07/21 00:26 91-20-32.0 0.64 1 Toluene <1.0 ug/L 05/07/21 00:26 108-88-31.0 0.48 1 m&p-Xylene <2.0 ug/L 05/07/21 00:26 179601-23-12.0 0.71 1 o-Xylene <1.0 ug/L 05/07/21 00:26 95-47-61.0 0.34 1 Surrogates 4-Bromofluorobenzene (S)94 %05/07/21 00:26 460-00-470-130 1 1,2-Dichloroethane-d4 (S)102 %05/07/21 00:26 17060-07-070-130 1 Toluene-d8 (S)99 %05/07/21 00:26 2037-26-570-130 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 05/11/2021 01:24 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 9 of 18 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92537129 McLeansville Fire Department 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: 618706 SM 6200B SM 6200B 602 by 6200B Laboratory:Pace Analytical Services - Charlotte Associated Lab Samples:92537129002, 92537129003, 92537129004 Parameter Units Blank Result Reporting Limit Qualifiers METHOD BLANK:3255336 Associated Lab Samples:92537129002, 92537129003, 92537129004 Matrix:Water AnalyzedMDL 1,2-Dichlorobenzene ug/L <1.0 1.0 05/07/21 00:080.34 1,3-Dichlorobenzene ug/L <1.0 1.0 05/07/21 00:080.34 1,4-Dichlorobenzene ug/L <1.0 1.0 05/07/21 00:080.33 Benzene ug/L <1.0 1.0 05/07/21 00:080.34 Chlorobenzene ug/L <1.0 1.0 05/07/21 00:080.28 Diisopropyl ether ug/L <1.0 1.0 05/07/21 00:080.31 Ethylbenzene ug/L <1.0 1.0 05/07/21 00:080.30 Isopropylbenzene (Cumene)ug/L <1.0 1.0 05/07/21 00:080.33 m&p-Xylene ug/L <2.0 2.0 05/07/21 00:080.71 Methyl-tert-butyl ether ug/L <1.0 1.0 05/07/21 00:080.42 Naphthalene ug/L <2.0 2.0 05/07/21 00:080.64 o-Xylene ug/L <1.0 1.0 05/07/21 00:080.34 Toluene ug/L <1.0 1.0 05/07/21 00:080.48 1,2-Dichloroethane-d4 (S)%105 70-130 05/07/21 00:08 4-Bromofluorobenzene (S)%97 70-130 05/07/21 00:08 Toluene-d8 (S)%99 70-130 05/07/21 00:08 Parameter Units LCS Result % Rec Limits Qualifiers% RecConc. 3255337LABORATORY CONTROL SAMPLE: LCSSpike 1,2-Dichlorobenzene ug/L 44.650 89 60-140 1,3-Dichlorobenzene ug/L 44.650 89 60-140 1,4-Dichlorobenzene ug/L 44.550 89 60-140 Benzene ug/L 53.850 108 60-140 Chlorobenzene ug/L 50.650 101 60-140 Diisopropyl ether ug/L 62.150 124 60-140 Ethylbenzene ug/L 50.450 101 60-140 Isopropylbenzene (Cumene)ug/L 45.550 91 60-140 m&p-Xylene ug/L 99.9100 100 60-140 Methyl-tert-butyl ether ug/L 52.550 105 60-140 Naphthalene ug/L 40.050 80 60-140 o-Xylene ug/L 48.250 96 60-140 Toluene ug/L 50.050 100 60-140 1,2-Dichloroethane-d4 (S)%108 70-130 4-Bromofluorobenzene (S)%99 70-130 Toluene-d8 (S)%101 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: 05/11/2021 01:24 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 10 of 18 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92537129 McLeansville Fire Department 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. 3255338MATRIX SPIKE & MATRIX SPIKE DUPLICATE: MSSpike Result 92537129003 3255339 MSD Result MSD % Rec RPD RPD Max MSDMS Spike Conc. 1,2-Dichlorobenzene ug/L 20 97 60-14098 1 3020<1.0 19.4 19.6 1,3-Dichlorobenzene ug/L 20 100 60-14099 1 3020<1.0 20.0 19.9 1,4-Dichlorobenzene ug/L 20 98 60-14099 1 3020<1.0 19.6 19.8 Benzene ug/L 20 118 60-140122 3 3020<1.0 23.7 24.3 Chlorobenzene ug/L 20 112 60-140113 1 3020<1.0 22.4 22.7 Diisopropyl ether ug/L 20 134 60-140134 0 3020<1.0 26.9 26.9 Ethylbenzene ug/L 20 113 60-140115 2 3020<1.0 22.5 22.9 Isopropylbenzene (Cumene)ug/L 20 104 60-140106 2 3020<1.0 20.8 21.3 m&p-Xylene ug/L 40 111 60-140113 2 3040<2.0 44.5 45.2 Methyl-tert-butyl ether ug/L 20 112 60-140112 1 3020<1.0 22.3 22.5 Naphthalene ug/L 20 87 60-14089 2 3020<2.0 17.4 17.9 o-Xylene ug/L 20 106 60-140108 2 3020<1.0 21.2 21.6 Toluene ug/L 20 110 60-140112 2 3020<1.0 22.0 22.3 1,2-Dichloroethane-d4 (S)%103 70-130102 4-Bromofluorobenzene (S)%97 70-13099 Toluene-d8 (S)%101 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: 05/11/2021 01:24 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 11 of 18 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92537129 McLeansville Fire Department 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: 618938 SM 6200B SM 6200B 602 by 6200B Laboratory:Pace Analytical Services - Charlotte Associated Lab Samples:92537129001 Parameter Units Blank Result Reporting Limit Qualifiers METHOD BLANK:3256598 Associated Lab Samples:92537129001 Matrix:Water AnalyzedMDL 1,2-Dichlorobenzene ug/L <1.0 1.0 05/07/21 11:540.34 1,3-Dichlorobenzene ug/L <1.0 1.0 05/07/21 11:540.34 1,4-Dichlorobenzene ug/L <1.0 1.0 05/07/21 11:540.33 Benzene ug/L <1.0 1.0 05/07/21 11:540.34 Chlorobenzene ug/L <1.0 1.0 05/07/21 11:540.28 Diisopropyl ether ug/L <1.0 1.0 05/07/21 11:540.31 Ethylbenzene ug/L <1.0 1.0 05/07/21 11:540.30 Isopropylbenzene (Cumene)ug/L <1.0 1.0 05/07/21 11:540.33 m&p-Xylene ug/L <2.0 2.0 05/07/21 11:540.71 Methyl-tert-butyl ether ug/L <1.0 1.0 05/07/21 11:540.42 Naphthalene ug/L <2.0 2.0 05/07/21 11:540.64 o-Xylene ug/L <1.0 1.0 05/07/21 11:540.34 Toluene ug/L <1.0 1.0 05/07/21 11:540.48 1,2-Dichloroethane-d4 (S)%101 70-130 05/07/21 11:54 4-Bromofluorobenzene (S)%94 70-130 05/07/21 11:54 Toluene-d8 (S)%100 70-130 05/07/21 11:54 Parameter Units LCS Result % Rec Limits Qualifiers% RecConc. 3256599LABORATORY CONTROL SAMPLE: LCSSpike 1,2-Dichlorobenzene ug/L 49.450 99 60-140 1,3-Dichlorobenzene ug/L 50.050 100 60-140 1,4-Dichlorobenzene ug/L 49.750 99 60-140 Benzene ug/L 56.350 113 60-140 Chlorobenzene ug/L 54.350 109 60-140 Diisopropyl ether ug/L 64.150 128 60-140 Ethylbenzene ug/L 54.850 110 60-140 Isopropylbenzene (Cumene)ug/L 50.950 102 60-140 m&p-Xylene ug/L 109100 109 60-140 Methyl-tert-butyl ether ug/L 52.850 106 60-140 Naphthalene ug/L 44.450 89 60-140 o-Xylene ug/L 51.850 104 60-140 Toluene ug/L 51.950 104 60-140 1,2-Dichloroethane-d4 (S)%93 70-130 4-Bromofluorobenzene (S)%99 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: 05/11/2021 01:24 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 12 of 18 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92537129 McLeansville Fire Department 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. 3256600MATRIX SPIKE & MATRIX SPIKE DUPLICATE: MSSpike Result 92537129001 3256601 MSD Result MSD % Rec RPD RPD Max MSDMS Spike Conc. 1,2-Dichlorobenzene ug/L 200 106 60-140108 1 30200<10.0 212 215 1,3-Dichlorobenzene ug/L 200 108 60-140108 0 30200<10.0 217 216 1,4-Dichlorobenzene ug/L 200 107 60-140106 1 30200<10.0 215 213 Benzene ug/L 200 137 60-140129 5 3020052.0 326 310 Chlorobenzene ug/L 200 126 60-140123 3 30200<10.0 252 245 Diisopropyl ether ug/L M120015560-140142 8 30200<10.0 309 285 Ethylbenzene ug/L 200 135 60-140132 1 30200298568562 Isopropylbenzene (Cumene)ug/L 200 121 60-140116 4 3020019.4 262 252 m&p-Xylene ug/L 400 132 60-140128 2 30400382909893 Methyl-tert-butyl ether ug/L 200 125 60-140118 6 30200<10.0 250 235 Naphthalene ug/L M120016760-140170 0 30200111014401450 o-Xylene ug/L 200 121 60-140118 3 3020016.6 259 252 Toluene ug/L 200 124 60-140123 1 3020023.7 272 270 1,2-Dichloroethane-d4 (S)%97 70-130100 4-Bromofluorobenzene (S)%100 70-13099 Toluene-d8 (S)%100 70-130103 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 05/11/2021 01:24 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 13 of 18 #=QL# QUALIFIERS Pace Project No.: Project: 92537129 McLeansville Fire Department 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. ANALYTE QUALIFIERS 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: 05/11/2021 01:24 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 14 of 18 #=CR# QUALITY CONTROL DATA CROSS REFERENCE TABLE Pace Project No.: Project: 92537129 McLeansville Fire Department Lab ID Sample ID QC Batch Method QC Batch Analytical Method Analytical Batch 92537129001 618938MW-1 SM 6200B 92537129002 618706MW-4 SM 6200B 92537129003 618706WSW-1 SM 6200B 92537129004 618706Trip Blank 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: 05/11/2021 01:24 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 15 of 18 Page 16 of 18 Page 17 of 18 Page 18 of 18