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Home My WebLink AboutMO-6731_27502_CA_MRP_20200519_Monitoring Letter ReportExcel Civil & Environmental Associates, PLLC 625 Huntsman Court Gastonia, North Carolina 28054 NC License No. P-0129 Telephone: (704) 853-0800 Facsimile: (704) 853-3949 Internet: www.excelengr.com May 19, 2020 Ms. Trudy Beverly, L.G. NCDEQ / MRO / DWM 610 East Center Avenue Mooresville, North Carolina 28115 Re: Groundwater Sampling Letter Report (Former) SERVCO No. 00311 24 North Church Street Concord, North Carolina Risk Classification: High (H155) Land Use: Residential MO-6731_27502_CA_20200519_Letter_Report ECEA Project No. 23056 Dear Ms. Beverly: Excel Civil & Environmental Associates, PLLC (Excel) submits for your review and approval this Groundwater Sampling Letter Report for the above -referenced facility. As per the approved scope of work, Excel obtained groundwater samples from monitoring wells MW- 8, MW-9 and MW-1OR on May 7, 2020. Laboratory analytical data indicates that overall dissolved phase hydrocarbon constituents continues to occur at the site and are decreasing with some seasonal fluctuations. Remaining constituent levels exceed NCAC 2L standards for all three monitoring wells for various constituents and at MW-1 OR exceed NCAC 2B standards for toluene. At this time, we recommend incident closure through a Notice of Residual Petroleum and issuance of a No Further Action for the incident. We would appreciate your review of this report a property sale; a property sale is underway. If you have any questions, please contact me. Sincerely yours, EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC M.T. Stanforth, P.E. Principal Engineer p.c. Bob Gresham — SERVCO, Albemarle, NC TABLE 1 MONITOR WELL CONSTRUCTION AND LIQUID LEVEL DATA (Former) Servco No. 00311 Concord, North Carolina Excel Project No. 23056 Well ID Top of Casing ft. Total Well Depth ft. Screen Interval ft. Depth to Product ft. Depth to Water ft. Product Thickness ft. Water Table Elevation ft. MW-1 100.00 45' 20'— 45' -- NS -- -- MW-2 99.63 44' 19' — 44' -- NS -- -- MW-3 99.34 43' 18' — 43' -- NS -- MW-4 100.10 45' 20'— 45' -- NS -- -- MW-5 99.97 45' 20'— 45' -- NS -- -- MW-6 99.22 40' 20'— 40' -- NS -- -- MW-7 91.79 37' 17' — 37' -- NS -- -- MW-8 99.28 49' 29' — 49' -- 32.28 -- 67.00 MW-9 80.24 26' 11' — 26' 13.18 67.06 MW-10R 79.44 30' 20'— 30' -- 13.05 -- 66.39 MW-11 68.94 20' 10' — 20' -- NS -- -- MW-12 72.04 22' 12' — 22' -- NS -- -- MW-13 70.44 25' 10' — 25' -- NS -- -- MW-14 71.74 25' 10' — 25' -- NS -- -- VW-1 -- 65' 60' — 65' -- NS -- -- VW-2 -- 1 61' 56' — 61' -- NS -- -- NOTES: Groundwater measurements collected May 7, 2020 ft. - feet NL - Not Located NS - Not Sampled If necessary water table elevations adjusted to account for the presence of Free Product using the following formula: WTE = TOC — (DTW — (Product Thickness 0.75)) TABLE 2 SUMMARY OF GROUNDWATER ANALYTICAL DATA (Former) Servco No. 00311 Concord, North Carolina Excel Project No. 23056 Well ID Sample N O N m y O 3 a H N C Gf C s - W N G) C 4)w X N O H m w a y y R C Z a O L O L y F d C N L_ 4)Date L V ' � NCAC 2L 1 600 600 500 20 70 6 0.7 3 10xNCAC 2B or GCL 510 110 84,500 85,500 20,000 70,000 6,000 15,000 3,000 07/02/03 1,300 140 140 580 1,800 78 82 NA 88 03/12/07 680 < 50 < 10 12 1,300 51 NA 55 < 1 09/18/08 <1 <5 <1 <3 <1 <1 NA 1.1 <1 11/03/09 240 17 4.8 30 640 1 22 NA 22 < 1 05/27/10 170 15 8.4 39 650 17 NA 4 < 5 11/04/10 36 < 25 < 5 < 15 530 16 NA < 5 < 5 05/11/11 39 < 25 < 5 < 15 500 14 NA 12 < 1 10/11/11 21 < 5 < 1 < 3 170 5 170 4.3 1 < 1 05/21/12 16 < 5 < 1 1.2 230 5.8 1 7.2 1 4.6 1 < 1 12/03/12 NOT SAMPLED - DRY 04/30/13 < 1 < 5 < 1 < 3 47 < 1 < 5 2 < 1 MW-1 10/09/13 1.1 < 5 < 1 < 3 42 < 1 < 5 5.3 < 1 05/14/14 <1 <5 <1 <3 <5 <5 <5 <1 <0.4 12/29/14 < 0.33 < 0.78 < 0.38 < 1.06 0.42 J < 0.32 < 1 < 0.37 < 0.4 05/07/15 1 0.589 J < 0.78 < 0.38 < 1.06 0.449 J < 0.32 < 1 0.541 J < 0.4 11/03/15 < 0.33 < 0.78 < 0.38 < 1.06 1.13 < 0.32 < 1 1.69 < 0.4 05/10/16 < 0.33 < 0.78 < 0.38 < 1.06 < 0.37 < 0.32 < 1 < 0.37 < 0.4 11/03/16 0.442 J < 0.78 < 0.38 < 1.06 < 0.37 < 0.32 < 1 < 0.37 < 0.4 05/04/17 < 0.33 < 0.41 < 0.38 < 1.06 < 0.37 < 0.32 < 1 < 0.37 < 0.4 11/09/17 < 0.33 < 0.41 < 0.38 < 1.06 < 0.37 < 0.32 < 1 0.605 J < 0.4 06/28/18 < 0.33 < 0.41 < 0.38 < 1.06 < 0.37 < 0.32 < 1 0.441 J < 0.4 11/06/18 < 0.33 < 0.41 < 0.38 < 1.06 < 0.37 < 0.32 < 1 1.01 < 0.4 05/07/19 < 0.33 < 0.41 < 0.38 < 1.06 < 0.37 < 0.32 < 1 < 0.37 < 0.4 07/02/03 1,300 80 76 210 1,100 37 110 NA NA 03/12/07 390 48 < 5 59 480 18 NA 8.4 < 5 09/18/08 230 < 100 < 20 20 660 25 1 NA < 20 < 20 11/03/09 260 < 50 < 10 49 740 22 NA < 10 < 10 05/27/10 210 160 33 216 640 18 NA 3.8 < 1 11/04/10 5.5 < 25 < 5 < 15 500 18 NA < 5 < 5 05/11/11 < 5 < 25 < 5 < 15 580 17 NA < 5 < 5 10/11/11 3.4 < 5 < 1 6 340 14 < 5 4 < 1 05/21/12 < 5 < 25 < 5 < 15 190 6.7 1 < 25 6.8 < 5 12/03/12 < 1 < 5 < 1 < 3 150 5.3 < 5 5.4 < 1 04/30/13 < 1 < 5 < 1 < 3 76 2.6 < 5 5.3 < 1 MW-2 10/09/13 < 1 < 5 < 1 < 3 49 1.6 < 5 4.8 < 1 05/14/14 <1 <5 <1 <3 10 <5 <5 2 <1 12/29/14 < 0.33 < 0.78 < 0.38 < 1.06 2.1 < 0.32 < 1 2.1 < 0.4 05/07/15 < 0.33 < 0.78 < 0.38 < 1.06 1.46 < 0.32 < 1 1.11 < 0.4 11/03/15 < 0.33 < 0.78 < 0.38 < 1.06 < 0.37 < 0.32 < 1 1.53 < 0.4 05/10/16 < 0.33 < 0.78 < 0.38 < 1.06 < 0.37 < 0.32 < 1 0.782 J < 0.4 11/03/16 < 0.33 < 0.78 < 0.38 < 1.06 < 0.37 < 0.32 < 1 1.27 < 0.4 05/04/17 < 0.33 < 0.41 < 0.38 < 1.06 < 0.37 < 0.32 < 1 1.14 < 0.4 11/09/17 < 0.33 < 0.41 < 0.38 < 1.06 < 0.37 < 0.32 < 1 1.06 < 0.4 06/28/18 < 0.33 < 0.41 < 0.38 < 1.06 < 0.37 < 0.32 < 1 0.763 J I < 0.4 11/06/18 < 0.33 < 0.41 < 0.38 < 1.06 < 0.37 < 0.32 < 1 0.966 J < 0.4 05/07/19 < 0.33 < 0.41 1 < 0.38 < 1.06 < 0.37 < 0.32 < 1 0.705 J < 0.4 Page 1 of 7 TABLE 2 SUMMARY OF GROUNDWATER ANALYTICAL DATA (Former) Servco No. 00311 Concord, North Carolina Excel Project No. 23056 Well ID Sample Date N O N m y O 3 a H N C Gf C s - W N G) C N X N O H w m w a y y R C Z a O L O L y F d C N L_ N L V ' � NCAC 2L 1 600 600 500 20 70 6 0.7 3 10xNCAC 2B or GCL 510 110 84,500 85,500 20,000 70,000 6,000 15,000 3,000 08/27/03 7.3 < 5 2 29 360 19 < 10 NA NA 03/12/07 < 1 < 5 < 1 < 3 24 1.6 NA 10 < 1 09/18/08 < 1 < 5 < 1 < 3 9.8 1.2 NA 7.2 < 1 11 /03/09 < 1 < 5 < 1 < 3 1.2 < 1 NA 7.2 < 1 05/27/10 < 1 < 5 < 1 < 3 3.1 < 1 NA 5.1 < 1 11/04/10 <1 <5 <1 <3 <1 <1 NA 4.3 <1 05/11/11 <1 <5 <1 <3 1.4 <1 NA 3.5 <1 10/11/11 <1 <5 <1 <3 1.4 <1 <5 5.7 <1 MW-3 05/21/12 <1 <5 <1 <3 <1 <1 <5 1.7 <1 12/03/12 <1 <5 <1 <3 <1 <1 <5 2.2 <1 04/30/13 <1 <5 <1 <3 <1 <1 <5 <1 <1 10/09/13 <1 <5 <1 <3 <1 <1 <5 <1 <1 05/14/14 <1 <5 <1 <3 <5 <5 <5 <1 <1 12/29/14 < 0.33 < 0.78 < 0.38 < 1.06 < 0.37 < 0.32 < 1 0.67 J < 0.4 05/07/15 < 0.33 < 0.78 < 0.38 < 1.06 < 0.37 < 0.32 < 1 0.432 J < 0.4 11/03/15 < 0.33 < 0.78 < 0.38 < 1.06 < 0.37 < 0.32 < 1 0.446 J < 0.4 05/10/16 < 0.33 < 0.78 < 0.38 < 1.06 < 0.37 < 0.32 < 1 < 0.37 < 0.4 11/03/16 NOT SAMPLED - DAMAGED 08/27/03 24 < 5 < 0.5 < 1.5 7.2 < 5 < 10 NA NA 03/12/07 2.3 < 5 < 1 < 3 2.6 < 1 NA 43 < 1 09/18/08 6,900 20,000 3,600 17,500 < 250 < 250 NA < 250 < 250 11/03/09 <1 <5 <1 <3 <1 <1 NA 41 <1 05/27/10 < 1 240 < 1 < 3 < 1 < 1 NA 240 < 1 11/04/10 <1 <5 <1 <3 <1 <1 NA 29 <1 05/11/11 <1 <5 <1 <3 9.8 <1 NA 32 <1 10/11/11 <1 <5 <1 <3 <1 <1 <1 11 <1 05/21/12 <1 <5 <1 <3 <1 <1 <5 8.8 <1 12/03/12 <1 <5 <1 <3 <1 <1 <5 10 <1 04/30/13 <1 <5 <1 <3 <1 <1 <5 7.9 <1 MW-4 10/09/13 <1 <5 <1 <3 <1 <1 <5 7.8 <1 05/14/14 <1 <5 <1 <3 <5 <5 <5 6.7 <1 12/29/14 < 0.33 < 0.78 < 0.38 < 1.06 < 0.37 < 0.32 < 1 6.0 < 0.4 05/07/15 < 0.33 < 0.78 < 0.38 < 1.06 < 0.37 < 0.32 < 1 7.39 < 0.4 11/03/15 < 0.33 < 0.78 < 0.38 < 1.06 < 0.37 < 0.32 < 1 4.84 < 0.4 05/10/16 < 0.33 < 0.78 < 0.38 < 1.06 < 0.37 < 0.32 < 1 5.23 < 0.4 11/03/16 < 0.33 < 0.78 < 0.38 < 1.06 < 0.37 < 0.32 < 1 3.69 < 0.4 05/04/17 < 0.33 < 0.41 < 0.38 < 1.06 < 0.37 < 0.32 < 1 3.06 < 0.4 11/09/17 < 0.33 < 0.41 < 0.38 < 1.06 < 0.37 < 0.32 < 1 2.49 < 0.4 06/28/18 < 0.33 < 0.41 < 0.38 < 1.06 < 0.37 < 0.32 < 1 1.99 < 0.4 11 /06/18 < 0.33 < 0.41 < 0.38 < 1.06 < 0.37 < 0.32 < 1 3.07 < 0.4 05/07/19 < 0.33 < 0.41 < 0.38 < 1.06 < 0.37 < 0.32 < 1 1.89 < 0.4 Page 2 of 7 TABLE 2 SUMMARY OF GROUNDWATER ANALYTICAL DATA (Former) Servco No. 00311 Concord, North Carolina Excel Project No. 23056 Well ID Sample Date N O N m y O 3 a H N C Gf C s - W N G) C N X N O H w m w a y y R C Z a O L O L y F d C N L_ N L V ' � NCAC 2L 1 600 600 500 20 70 6 0.7 3 10xNCAC 2B or GCL 510 110 84,500 85,500 20,000 70,000 6,000 15,000 3,000 08/27/03 1,900 < 250 < 25 < 75 2,100 < 250 < 250 NA NA 03/12/07 880 < 500 < 100 < 300 710 < 100 NA < 100 < 100 09/18/08 530 < 50 24 33 950 54 NA 13 < 10 11/03/09 440 < 50 < 10 < 30 1,200 55 NA 18 < 10 05/27/10 320 < 5 1.1 8 810 35 NA 15 4.5 11/04/10 6.2 < 25 < 5 8 770 27 NA 13 5.6 05/11/11 8.3 < 25 < 5 < 15 850 27 NA 14 < 5 10/11/11 < 10 < 50 < 10 < 30 440 12 < 50 23 < 10 05/21/12 8.7 < 25 < 5 < 15 580 17 < 25 17 < 5 12/03/12 < 1 < 5 < 1 < 3 280 7.9 < 5 25 < 1 04/30/13 3.5 < 10 < 2 < 6 360 10 < 10 18 < 2 MW-5 10/09/13 < 2 < 10 < 2 < 6 220 6.9 < 10 23 < 2 05/14/14 <1 <5 <1 <3 180 <5 <5 13 <1 12/29/14 < 0.33 < 0.78 < 0.38 < 1.06 39 0.96 J < 1 6.6 < 0.4 05/07/15 < 0.33 < 0.78 < 0.38 < 1.06 52.1 1.17 < 1 4.45 < 0.4 11/03/15 < 0.33 < 0.78 < 0.38 < 1.06 5.71 < 0.32 < 1 4.67 < 0.4 05/10/16 < 0.33 < 0.78 < 0.38 < 1.06 4.3 < 0.32 < 1 3.2 < 0.4 11/03/16 < 0.33 < 0.78 < 0.38 < 1.06 < 0.37 < 0.32 < 1 3.54 < 0.4 05/04/17 < 0.33 < 0.41 < 0.38 < 1.06 < 0.37 < 0.32 < 1 3.22 < 0.4 11/09/17 < 0.33 < 0.41 < 0.38 < 1.06 < 0.37 < 0.32 < 1 3.33 < 0.4 06/28/18 < 0.33 < 0.41 < 0.38 < 1.06 < 0.37 < 0.32 < 1 2.06 < 0.4 11 /06/18 < 0.33 < 0.41 < 0.38 < 1.06 < 0.37 < 0.32 < 1 1.98 < 0.4 05/07/19 < 0.33 < 0.41 < 0.38 < 1.06 < 0.37 < 0.32 < 1 1.36 < 0.4 MW-6 02/26/04 < 1 < 5 < 1 < 2 < 5 < 5 < 5 NA NA 02/26/04 < 1 < 5 < 1 < 2 < 5 < 5 < 5 400 1.3 03/12/07 < 1 < 5 < 1 < 3 < 1 < 1 NA 340 1.2 09/18/08 < 1 < 5 < 1 < 3 < 1 < 1 NA 220 6.6 05/27/10 < 1 < 5 < 1 < 3 < 1 < 1 NA 220 < 1 05/11/11 <2 <10 <2 <6 <2 <2 NA 170 <2 10/11/11 <5 <25 <5 <15 <5 <5 <5 190 <25 05/21/12 <5 <25 <5 <15 <5 <5 <LL!L] <5 12/03/12 <1 <5 <1 <3 <1 <1 < <1 04/30/13 <1 <5 <1 <3 <1 <1 < <1 10/13 - 5/14 NOT LOCATED MW-7 12/29/14 < 0.33 < 0.78 < 0.38 < 1.06 < 0.37 < 0.32 < 1 8.0 0.57 J 05/07/15 < 0.33 < 0.78 < 0.38 < 1.06 < 0.37 < 0.32 < 1 9.85 < 0.4 11/03/15 < 0.33 < 0.78 < 0.38 < 1.06 < 0.37 < 0.32 < 1 11.80 < 0.4 05/10/16 < 0.33 < 0.78 < 0.38 < 1.06 < 0.37 < 0.32 < 1 5.95 < 0.4 11/03/16 < 0.33 < 0.78 < 0.38 < 1.06 < 0.37 < 0.32 < 1 12.40 < 0.4 05/04/17 < 0.66 < 0.82 < 0.77 < 2.12 < 0.73 < 0.64 < 2 12.40 < 0.8 11/09/17 < 0.33 < 0.41 < 0.38 < 1.06 < 0.37 < .32 < 1 11.60 < 0.4 06/29/18 < 0.33 < 0.41 < 0.38 < 1.06 < 0.37 < 0.32 < 1 10.50 < 0.4 11/06/18 < 0.33 < 0.41 < 0.38 < 1.06 < 0.37 < 0.32 < 1 12.90 < 0.4 05/07/19 < 0.33 < 0.41 < 0.38 < 1.06 < 0.37 < 0.32 < 1 30.80 < 0.4 Page 3 of 7 TABLE 2 SUMMARY OF GROUNDWATER ANALYTICAL DATA (Former) Servco No. 00311 Concord, North Carolina Excel Project No. 23056 Well ID Sample N O N m y O 3 a H N C Gf C s - W N G) C 4)w X N O H m w a y y R C Z a O L O L y F d C N L_ 4)Date L V ' � NCAC 2L 1 600 600 500 20 70 6 0.7 3 10xNCAC 2B or GCL 510 110 84,500 85,500 20,000 70,000 6,000 15,000 3,000 05/13/04 8,700 27,000 9,900 47,000 < 1,000 < 1,000 4,100 NA NA 3/07 - 5/10 NOT SAMPLED - FREE PRODUCT OBSERVED 11/04/10 4,100 17,000 3,100 17,900 1 < 200 < 200 NA < 200 < 200 05/11/11 2,300 10,000 1,900 15,200 < 100 < 10 NA < 100 < 100 10/11/11 2,100 11,000 3,300 23,800 < 100 < 100 2,100 < 100 < 500 05/21/12 1,400 5,800 3,100 25,500 < 100 < 100 2,600 < 100 < 100 12/03/12 NOT SAMPLED - FREE PRODUCT OBSERVED 04/30/13 320 1,000 1,100 1 7,800 1 < 50 1 < 50 1 1,600 < 50 < 50 10/09/13 NOT SAMPLED - FREE PRODUCT OBSERVED 05/14/14 < 100 < 500 660 6,600 < 500 < 500 940 < 100 < 100 MW 8 12/29/14 < 16 < 39 91 1,000 < 18 < 16 440 < 19 < 20 05/07/15 12.2 J 69.5 J 197 1,452 < 7.3 < 6.4 574 < 7.4 < 8 11/03/15 10.7 118 597 3,690 < 3.67 < 3.2 689 < 3.72 < 3.98 05/10/16 < 33.1 355 J 851 4,520 < 36.7 < 32 799 < 37.2 < 39.8 11/03/16 < 3.31 8.77 J 34.3 706 < 3.67 1 < 3.2 332 < 3.72 < 3.98 05/04/17 < 3.31 12 81.3 823 < 3.67 < 3.2 551 < 3.72 < 3.98 11/09/17 43.2 5.67 J 128 380 < 3.67 < 3.2 239 < 3.72 < 3.98 06/28/18 < 3.31 < 4.12 5.93 J 78 J < 3.67 < 3.2 92.7 < 3.72 < 3.98 11/06/18 16.6 4.31 118 430 < 3.67 < 3.2 184 < 3.72 < 3.98 05/07/19 41.1 17.8 125 446 < 0.367 < 0.32 277 < 0.372 < 0.398 11/01/19 3.22 1.45 13 123.7 < 0.367 < 0.32 176 < 0.372 < 0.398 05/07/20 20.2 J < 27.8 179 820 < 10.1 < 10.5 378 J < 30.0 < 19.0 J4 02/26/04 12,000 < 2,500 < 500 < 1,000 4,700 < 2,500 < 2,500 NA NA 03/12/07 32 68 50 360 800 22 NA 20 < 10 09/18/08 27 < 5 < 1 4.9 430 34 NA 21 4 11/03/09 320 < 25 5.4 17 3,700 180 1 NA 13 < 50 05/27/10 2,800 < 250 < 50 1 500 4,900 330 NA < 50 < 50 11/04/10 250 < 120 < 250 < 75 3,100 200 NA < 25 < 25 05/11/11 1,000 < 100 < 20 < 60 3,900 330 NA < 20 < 20 11/15/11 2,000 < 5 < 1 < 3 9,600 67 < 5 20 9.4 05/21/12 120 < 5 < 5 8.5 2,200 110 18 6.6 5.4 12/03/12 34 < 100 < 20 < 60 1,500 71 < 100 < 20 < 20 04/30/13 < 1 < 5 < 1 < 3 37 1.7 < 5 < 1 < 1 10/09/13 2.3 < 5 < 1 < 3 1,500 62 < 5 1 4.5 3.7 MW-9 05/14/14 1.1 < 5 < 1 < 3 500 24 < 5 5.7 6.8 12/29/14 0.9 J < 1.6 < 0.77 < 2.08 160 7.6 4.7 J 2.0 J 1.4 J 05/07/15 NOT SAMPLED - NOT LOCATED 11/03/15 11.9 2.7 J 3.38 5.23 J 437 21.5 22.5 1.79 0.753 J 05/10/16 115 8.4 34.5 13.01 743 27.7 75.3 2.16 < 0.4 11/03/16 4.17 < 0.78 < 0.38 0.446 J 375 12.3 < 1 17.2 2.31 05/04/17 3.22 0.914 J 0.477 J 1.446 J 333 14.2 7.36 5.26 0.883 J 11/09/17 10.9 < 0.41 < 0.38 1.42 186 6.79 1.07 J 4.68 1.02 06/29/18 0.607 J < 0.41 < 0.38 < 1.06 1 165 4.68 < 1 2.89 < 0.4 11/06/18 1.45 0.766 J 1.06 1.287 J 132 4.26 1.17 J 1.22 < 0.398 05/08/19 1.15 < 0.41 < 0.384 < 1.06 50.7 1.06 < 1 1.67 0.671 J 11 /01 /19 0.652 J < 0.41 < 0.384 < 1.06 53.3 1.31 < 1 0.701 J < 0.398 05/07/20 0.169 J < 0.278 < 0.137 < 0.256 J 5.75 0.123 J < 1 0.715 J < 0.190 J4 Page 4 of 7 TABLE 2 SUMMARY OF GROUNDWATER ANALYTICAL DATA (Former) Servco No. 00311 Concord, North Carolina Excel Project No. 23056 Well ID Sample Date a)3 m 2 ~ N � %4 s Lu N X f6 o H m w a f0 s C_ M Z d L U d o u _ NCAC 2L 1 600 600 500 20 70 6 0.7 3 10xNCAC 2B or GCL 510 110 84,500 85,500 20,000 70,000 6,000 15,000 3,000 02/26/04 12,000 24,000 3,900 21,600 2,500 < 2,500 < 2,500 NA < 200 03/12/07 13,000 19,000 2,200 13,000 1,000 < 200 NA < 200 < 2,500 09/18/08 13,000 22,000 4,000 1 23,200 3,200 1 < 2,500 NA < 2,500 < 200 11/03/09 NOT SAMPLED - FREE PRODUCT OBSERVED MW-10 05/27/10 11,000 12,000 2,000 17,500 450 < 200 NA < 200 < 200 11/04/10 7,400 8,000 1,400 11,000 650 < 200 NA < 200 < 50 05/11/11 5,400 3,900 1,100 7,400 820 57 NA < 50 < 1 10/11 /11 30 27 5.7 48 2.5 < 1 < 1 < 1 < 25 5/12 - 12/12 NOT SAMPLED - DAMAGED 04/30/13 1 1,900 600 580 1,870 450 30 170 < 25 < 25 10/09/13 3,600 1,700 1,300 4,900 630 45 360 < 10 < 10 05/14/14 3,200 12,000 2,600 15,800 < 1,200 < 1,200 < 1,200 < 250 < 250 12/29/14 1,800 6,900 2,700 13,800 250 < 8.0 690 < 9.3 < 10 05/07/15 3,700 5,590 1,930 8,290 503 37.4 J 502 < 37 < 40 11/03/15 3,630 4,750 1,950 8,430 512 31.3 J 488 < 18.6 < 19.9 05/10/16 1 781 4,640 1,460 11,120 57.4 < 8 673 < 9.3 < 9.95 MW-10R 11/03/16 1,370 1,570 853 3,890 238 < 32 396 J < 37.2 < 39.8 05/04/17 3,510 2,150 1,840 6,730 257 28.1 531 < 9.3 < 9.95 11/09/17 1,170 1,530 1,170 3,820 235 14.1 289 < 9.3 < 9.95 06/28/18 1,470 422 1,310 3,036 118 9.84 J 262 < 7.4 < 7.96 11/06/18 932 2,980 1,800 10,780 24.9 < 0.256 591 < 0.372 < 0.398 05/08/19 145 2,100 1,820 13,390 < 18.4 < 16 690 < 18.6 < 19.9 11/01/19 161 170 443 998 16.6 1.37 128 < 0.372 < 0.398 05/07/20 161 2,270 2,100 14,050 < 1.01 1.05 642 < 3 < 1.90 J4 05/13/04 <0.5 <5 <0.5 <1.5 <5 <5 <5 NA NA 11/04/10 <1 <5 <1 <3 <1 <1 NA <1 <1 05/11/11 1 <5 <1 <3 <1 <1 NA <1 <1 10/11/11 <1 <5 <1 <3 <1 <1 <5 1.8 <1 05/21/12 <1 <5 <1 <3 <1 <1 <5 1.2 <1 12/03/12 <1 <5 <1 <3 <1 <1 <5 2.9 <1 MW-11 04/30/13 < 1 < 5 < 1 < 3 < 1 < 1 < 5 1.1 < 1 10/10/13 <1 <5 <1 <3 <1 <1 <5 2.5 <1 05/14/14 <1 <5 <1 <3 <5 <5 <5 2.4 <1 12/29/14 < 0.33 < 0.78 < 0.38 < 1.06 < 0.37 < 0.32 < 1 1 2.4 0.5 J 05/07/15 < 0.33 < 0.78 < 0.38 < 1.06 < 0.37 < 0.32 < 1 1.95 0.524 J 11/03/15 < 0.33 < 0.78 < 0.38 < 1.06 < 0.37 < 0.32 < 1 2.38 0.726 J 05/10/16 < 0.33 < 0.78 < 0.38 < 1.06 < 0.37 < 0.32 < 1 2.25 0.63 J 11/16 - 5/19 NOT SAMPLED - NOT PART OF SCOPE OF WORK Page 5 of 7 TABLE 2 SUMMARY OF GROUNDWATER ANALYTICAL DATA (Former) Servco No. 00311 Concord, North Carolina Excel Project No. 23056 Well ID Sample Date N O N m y O 3 a H N C Gf C s - W N G) C N X N O H w m w a y y R C Z a O L O L y F d C N L_ N L V ' � NCAC 2L 1 600 600 500 20 70 6 0.7 3 10xNCAC 2B or GCL 510 110 84,500 85,500 20,000 70,000 6,000 15,000 3,000 05/13/04 240 < 25 < 2.5 < 7.5 1,800 72 < 25 NA NA 03/12/07 < 1 < 5 < 1 < 3 14 8.4 NA 86 2.2 09/18/08 < 10 < 50 < 10 < 30 470 32 NA < 10 < 10 11/03/09 NOT SAMPLED - NOT LOCATED 05/27/10 < 1 < 5 < 1 < 3 30 13 NA < 1 < 1 11/04/10 < 5 < 25 < 5 < 15 190 17 NA < 5 < 5 05/11/11 38 24 8.5 62 35 18 NA < 1 < 1 10/11/11 < 1 < 5 < 1 < 3 260 24 8.9 < 1 < 5 05/21/12 <1 <5 <1 <3 210 35 <5 <1 <1 12/03/12 < 1 < 5 < 1 < 3 760 76 1 < 5 1.2 < 1 04/30/13 < 1 < 5 < 1 < 3 70 27 < 5 < 1 < 1 MW-12 10/10/13 < 1 < 5 < 1 < 3 290 27 < 5 < 1 < 1 05/14/14 <1 <5 <1 <3 <5 <5 <5 80 <1 12/29/14 < 0.33 < 0.78 < 0.38 < 1.06 42 18 < 1 < 0.37 < 0.4 05/07/15 < 0.33 < 0.78 < 0.38 < 1.06 158 15.2 < 1 < 0.37 < 0.4 11 /03/15 < 0.33 < 0.78 < 0.38 < 1.06 327 1 29.5 < 1 < 0.37 < 0.4 05/10/16 < 0.33 < 0.78 < 0.38 < 1.06 103 8.11 < 1 < 0.37 < 0.4 11 /03/16 < 0.33 < 0.78 < 0.38 < 1.06 81.6 16.3 < 1 < 0.37 < 0.4 05/04/17 < 0.33 < 0.41 < 0.38 < 1.06 12.5 3.65 < 1 < 0.37 < 0.4 11 /09/17 < 0.33 < 0.41 < 0.38 < 1.06 11.6 4.04 < 1 < 0.37 < 0.4 06/29/18 < 0.33 < 0.41 < 0.38 < 1.06 1.32 0.497 J < 1 34.4 0.481 J 11 /06/18 < 0.33 < 0.41 < 0.38 < 1.06 14 0.955 J < 1 < 0.37 < 0.4 05/07/19 < 0.33 < 0.41 < 0.38 < 1.06 5 0.817 J < 1 < 0.37 < 0.4 06/24/04 < 0.5 < 5 < 0.5 < 1.5 < 1 < 1 < 5 NA NA 11/04/10 < 1 < 5 <1 < 3 <1 < 1 NA <1 <1 05/11/11 <1 <5 <1 <3 <1 <1 NA <1 <1 10/11/11 <1 <5 <1 <3 <1 <1 <5 <1 <1 05/21/12 <1 <5 <1 <3 <1 <1 <5 <1 <1 12/03/12 <1 <5 <1 <3 <1 <1 <5 <1 <1 04/30/13 <1 <5 <1 <3 <1 <1 <5 <1 <1 MW-13 10/10/13 <1 <5 <1 <3 <1 <1 <5 <1 <1 05/14/14 <1 <5 <1 <3 <5 <5 <5 <1 <1 12/29/14 < 0.33 < 0.78 < 0.38 < 1.06 < 0.37 < 0.32 < 1 < 0.37 < 0.4 05/07/15 < 0.33 < 0.78 < 0.38 < 1.06 < 0.37 < 0.32 < 1 < 0.37 < 0.4 11 /03/15 < 0.33 < 0.78 < 0.38 < 1.06 < 0.37 < 0.32 < 1 < 0.37 < 0.4 05/10/16 < 0.33 < 0.78 < 0.38 < 1.06 < 0.37 < 0.32 < 1 < 0.37 < 0.4 11/16 - 5/19 NOT SAMPLED - NOT PART OF SCOPE OF WORK Page 6 of 7 TABLE 2 SUMMARY OF GROUNDWATER ANALYTICAL DATA (Former) Servco No. 00311 Concord, North Carolina Excel Project No. 23056 Well ID Sample Date N O N m y O 3 a h N C Gf C s - W N G) C N X N O H w m w a y y R R Z a O L O L y F d C N L_ N L V ' � NCAC 2L 1 600 600 500 20 70 6 0.7 3 10xNCAC 2B or GCL 510 110 84,500 85,500 20,000 70,000 6,000 15,000 3,000 06/24/04 1.2 < 5 < 0.5 < 1.5 38 11 < 5 NA NA 03/12/07 < 1 < 5 < 1 < 3 14 8.5 NA 88 2.1 09/18/08 < 1 < 5 < 1 < 3 10 5.8 NA 24 < 1 11 /03/09 < 1 < 5 < 1 < 3 11 6 NA 25 1.1 05/27/10 < 1 < 5 < 1 < 3 5.6 3.8 NA 93 1 11/04/10 <1 < 5 < 1 < 3 5.2 3.3 NA 98 1.2 05/11/11 2.8 < 5 < 1 4.1 3.6 1.7 NA 120 < 1 10/11/11 <1 < 5 <1 < 3 3.3 1.8 13 63 <1 MW-14 05/21/12 < 1 < 5 < 1 < 3 2.5 1.4 1 < 5 71 < 1 12/03/12 < 1 < 5 < 1 < 3 4.6 2.1 < 5 75 < 1 04/30/13 < 1 < 5 < 1 < 3 2.1 1.2 < 5 83 < 1 10/10/13 < 1 < 5 < 1 < 3 2.4 1.6 < 5 78 < 1 05/14/14 NOT LOCATED 12/29/14 < 0.33 < 0.78 < 0.38 < 1.06 0.67 J 20 < 1 5.9 1.8 05/07/15 < 0.33 < 0.78 < 0.38 < 1.06 1.6 4.42 < 1 10.9 0.775 J 11 /03/15 < 0.33 < 0.78 < 0.38 < 1.06 < 0.37 0.753 J < 1 0.915 J 0.468 J 05/10/16 < 0.33 < 0.78 < 0.38 < 1.06 5.15 1.95 < 1 32.6 1.19 11/16 5/19 NOT SAMPLED - NOT PART OF SCOPE OF WORK 09/18/08 <1 <5 <1 <3 <1 <1 NA <1 <1 11/03/09 <1 <5 <1 <3 <1 <1 NA <1 <1 05/27/10 <1 <5 <1 <3 <1 <1 NA <1 <1 11/04/10 <1 <5 <1 <3 <1 <1 NA <1 <1 05/11/11 <1 <5 <1 <3 <1 <1 NA <1 <1 10/11/11 <1 <5 <1 <3 <1 <1 <5 <1 <1 05/21/12 <1 <5 <1 <3 1 <1 1 <1 <5 <1 <1 12/03/12 NOT SAMPLED - INOPERABLE WS-1 04/30/13 <1 <5 <1 <3 <1 <1 <5 <1 <1 10/10/13 <1 <5 <1 <3 <1 <1 <5 <1 <1 05/14/14 <1 <5 <1 <3 <1 <5 <5 <1 <1 12/14 - 11/15 NOT SAMPLED - INOPERABLE 05/10/16 < 0.33 < 0.78 < 0.38 < 1.06 1 < 0.37 1 < 0.32 < 1 < 0.37 < 0.4 11/03/16 NOT SAMPLED - INOPERABLE 11 /09/17 < 0.33 < 0.41 < 0.38 < 1.06 1 < 0.37 1 < 0.32 < 1 < 0.37 < 0.4 6/18 - 11/18 NOT SAMPLED - ACCESS DENIED 05/08/19 < 0.33 < 0.41 < 0.38 1 < 1.06 1 < 0.37 1 < 0.32 1 < 1 < 0.37 < 0.4 NOTES: Data provided in micrograms per liter or µg/L Data in BOLD exceeds NCAC 2L, highlighted data exceeds 10x NCAC 213 NA - Not Analyzed MTBE - Methyl Tert Butyl Ether IPE - Di -Isopropyl Ether PCE - Tetrachloroethene TCE - Trichloroethene NCAC - North Carolina Administrative Code Additional Detections: 5-20 Sampling Event Isopropylbenzene: MW-8 38.5 J; MW-1 OR 80.7 n-Propylbenzene: MW-8 72.7; MW-1OR 78.3 1,2,4-Trimethylbenzene: MW-8 1,160; MW-10R 3,290 1,3,5-Trimethylbenzene: MW-8 185; MW-10R 698 MW-8: n-Butylbenzene 32.6; sec-Butylbenzene 18.9; p-Isopropyltoluene 36.9 MW-10: n-Butylbenzene 19.1; sec-Butylbenzene 9.70 J; p-Isopropyltoluene 5.42 Page 7 of 7 EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC 625 HUNTSMAN COURT GASTONIA, NC 28054 (704) 853-0800 FIGURE 1 - SITE VICINITY MAP Source: U.S.G.S. 7.5 Minute Topographic Map N Concord, NC, Quadrangle, 1987 I ti i COMMERCIAL ' CHURCH NOTES Map adapted from Aerial Photograph & i Cabarrus County Tax Map. j UST - Underground Storage Tank FIRE STATION i ' I ASPHALT i I MW-6( ® I I I i Ws-1 CHURCH I j i I i I i ASPHALT I I I I I i ' ' � All USTs removed on 5/28/03 iMW-13 ASPHALT I I I z I @MW-11 O I � I I _ I C� COMMERCIAL = I I n = I ASPHALT I _ C/) LEGEND -A i MW-8 I I - - - - Property Line (Approximate) I ® MW-IORj------- Right of Way I W� ® GRASS I RESIDENTIAL -------- Former UST Area CANOPY �� I i o� ! Monitoring Well Location MW-5 i I Irrigation Well Location Z I ® i , > m I :MW-3 i �� ? 4-1 W j MW-2 MW-��' MW-9 @MW-14 62.69' MW-12 I MW-4 !� I BRUMLEY AVENUE NE Iv1W-7@) j I j j GRASS I Q I I � � I Q I i > iY 0 o RESIDENTIAL O ' O 3: U Q I � i� i • F��' i . r�� EXCEL CIVIL & ENVIRONMENTAL FIGURE 3 - ASSOCIATES, PLLCOURT POTABLE WELLS MAP 625 HUNTSMAN COURT GASTONIA, NC 28054 (704) 853-0800 Source: Cabarrus County GIS I ti i COMMERCIAL ' CHURCH NOTES Map adapted from Aerial Photograph & i Cabarrus County Tax Map. j UST - Underground Storage Tank FIRE STATION i ' I ASPHALT I I i MW-6( ® i I j WS-1 CHURCH I j i I i I i ASPHALT I I I I I i ' ' � All USTs removed on 5/28/03 iMW-13 ASPHALT Data from liquid levels collected on May 7, 2020 I I I z I @MW-11 O I � I I _ I C� COMMERCIAL = I I n = I ASPHALT I _ C/) m _.._.._.._.._.._........ _. ......_._. _. LEGEND I� I i MW-8 I 67.00' 67' - - - Property Line (Approximate) I MW-1 OR I i 66.39' ! i------- Right of Way GRASS I RESIDENTIAL -------- Former UST Area CANOPY �� I i ow I Water Table Contour Line (Approximate) M UZI Monitoring Well Location Y I � • r------- Q i ® Irrigation Well Location :MW-3 i e&? VW-1 W j MW-2 MW-1�' MW-9 67' @MW-14 67.06' I MW-12 I MW-4 I BRUMLEY AVENUE NE Iv1W-7@) j I j j GRASS I Q I I � � I Q I i > iY 0 o RESIDENTIAL O ' O 3: r , U Q i F FIRE STATION i i i I ASPHALT I I NS I NS I MW-6 i ws-1 CHURCH I j I I ASPHALT I i CHURCH I i i i :MW-13 ............... I I I z I ZOJ I = I I I n COMMERCIAL = I C I = I ASPHALT — cn �.._.. _.._.._.._.:_.._.. J IYI I 20.2 J 161 l —A I /j MW 8 ' 101 18,581 \� \ < 30.0 < 1.01 \ \ < 3.0 i I � I CANOPY �> MW—IOR �U- 0 I NS I 1 r---------- 5 w i MW-2 V '2 MW-1/ Ns MW-3 i t ILVW-1 z m rys Ns w MW-9 i I L-------- J IMW-4 0.169 J 1.27 N S 5.75 BRUMLEY AVENUE NE 0.715J NS ASPHALT r" i i I I GRASS I RESIDENTIAL I I NS MW-1� NS --- MW-1�.._ w iY o RESIDENTIAL O O r , Q NOTES Map adapted from Aerial Photograph & Cabarrus County Tax Map. UST - Underground Storage Tank All USTs removed on 5/28/03 Data from samples collected on May 7, 2020 LEGEND - - - - - Property Line (Approximate) ------- Right of Way -------- Former UST Area Monitoring Well Location Benzene BTEX Constituents Shown MTBE PCE - - - - Estimated extent of Benzene at 2L in groundwater Estimated extent of naphthalene at 2L in groundwater aceAnalXical o ANALYTICAL REPORT National Center for Testing & Innovation May 18 , 2 0 2 0 -1r Excel Civil & Environmental Associates Sample Delivery Group: L1216447 Samples Received: 05/08/2020 Project Number: 23056 Description: Servco 00311 Concord Site: 2014036 Report To: Mr. Mike Stanforth 625 Huntsman Court Gastonia, NC 28054 Entire Report Reviewed By: 4�41 Heather J Wagner Project Manager Results relate only to the items tested or calibrated and are reported as rounded values. This test report shall not be reproduced, except in full, without written approval of the laboratory. Where applicable, sampling conducted by Pace Analytical National is performed per guidance provided in laboratory standard operating procedures ENV-SOP-MTJL-0067 and ENV-SOP-MTJL-0068. Where sampling conducted by the customer, results relate to the accuracy of the information provided, and as the samples are received. 41 r f ACCOUNT: PROJECT: SDG: DATE/TIME: PAGE: Excel Civil & Environmental Associates 23056 L1216447 05/18/2013:45 1 of 18 TABLE OF CONTENTS ONE LAB. NATIONWIDE. Cp: Cover Page 1 Fn Tc: Table of Contents 2 Ss: Sample Summary 3 Cn: Case Narrative 4 Sr: Sample Results 5 FS MW-8 L1216447-01 5 [Cn] MW-9 L1216447-02 7 MW-10R L1216447-03 9 Fr Qc: Quality Control Summary 11 Volatile Organic Compounds (GC/MS) by Method 620OB-2011 11 RC Gl: Glossary of Terms 16 F Al: Accreditations & Locations 17 Sc: Sample Chain of Custody 18 rAl FSC ACCOUNT: PROJECT: SDG: DATE/TIME: PAGE: Excel Civil & Environmental Associates 23056 L1216447 05/18/2013:45 2 of 18 SAMPLE SUMMARY ONE LAB. NATIONWIDE. Collected by Collected date/time Received date/time MW-8 L1216447-01 GW Jason Jackson 05/07/2012:30 05/08/2008:45 FP1 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time FTC Volatile Organic Compounds (GC/MS) by Method 620OB-2011 WG1474372 100 05/12/2015:22 05/12/2015:22 ADM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 620OB-2011 WG1476286 100 05/17/20 22:05 05/17/20 22:05 ACG Mt. Juliet, TN Collected by Collected date/time Received date/time MW-9 L1216447-02 GW Jason Jackson 05/07/2013:50 05/08/20 08:45 4 n Method Batch Dilution Preparation Analysis Analyst Location date/time FSrdate/time Volatile Organic Compounds (GC/MS) by Method 6200E-2011 WG1474372 1 05/12/2015:42 05/12/2015:42 ADM Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 6200E-2011 WG1476286 1 05/17/20 21:45 05/17/20 21:45 ACG Mt. Juliet, TN RC Collected by Collected date/time Received date/time 7 GI MW-10R L1216447-03 GW Jason Jackson 05/07/2013:15 05/08/2008:45 Method Batch Dilution Preparation Analysis Analyst Location FAI date/time date/time Volatile Organic Compounds (GC/MS) by Method 620OB-2011 WG1474372 10 05/12/2016:02 05/12/2016:02 ADM Mt. Juliet, TN Organic Compounds (GC/MS) by Method 620OB-2011 WG1476286 100 05/17/20 22:25 05/17/20 22:25 ACG Mt. Juliet, TN FSCVolatile ACCOUNT: PROJECT: SDG: DATE/TIME: PAGE: Excel Civil & Environmental Associates 23056 L1216447 05/18/2013:45 3 of 18 CASE NARRATIVE ONE LAB. NATIONWIDE. FP1 All sample aliquots were received at the correct temperature, in the proper containers, with the appropriate preservatives, and within method specified holding times, unless qualified or notated within the report. Where applicable, all MDL (LOD) and RDL (LOQ) values reported for environmental samples FTChave been corrected for the dilution factor used in the analysis. All Method and Batch Quality Control are within established criteria except where addressed in this case narrative, a non-conformance form or properly qualified within the sample results. By my digital signature below, I affirm to the best of my FSS knowledge, all problems/anomalies observed by the laboratory as having the potential to affect the quality of the data have been identified by the laboratory, and no information or data have been knowingly withheld that would affect the quality of the data. FSr FC-1 4�j �GI Heather J Wagner Project Manager FAI FSC ACCOUNT: PROJECT: SDG: DATE/TIME: PAGE: Excel Civil & Environmental Associates 23056 L1216447 05/18/2013:45 4 of 18 MW-8 SAMPLE RESULTS - 01 ONE LAB. NATIONWIDE. Collected date/time: 05/07/20 12:30 L1216447 Volatile Organic Compounds (GC/MS) by Method 620OB-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/I ug/I ug/I date / time Acetone U 1130 5000 100 05/12/202015:22 WG1474372 Acrolein U J4 254 5000 100 05/17/2020 22:05 WG1476286 Acrylonitrile U 67.1 1000 100 05/12/202015:22 WG1474372 Benzene 20.2 J 9.41 100 100 05/12/202015:22 WG1474372 Bromobenzene U 11.8 100 100 05/12/202015:22 WG1474372 Bromodichloromethane U 13.6 100 100 05/12/202015:22 WG1474372 Bromoform U 12.9 100 100 05/12/202015:22 WG1474372 Bromomethane U 60.5 500 100 05/12/202015:22 WG1474372 n-Butylbenzene 32.6 J 15.7 100 100 05/12/202015:22 WG1474372 sec -Butyl benzene 18.9 J 12.5 100 100 05/12/202015:22 WG1474372 ter[-Butylbenzene U 12.7 100 100 05/12/202015:22 WG1474372 Carbon tetrachloride U 12.8 100 100 05/12/202015:22 WG1474372 Chlorobenzene U J4 11.6 100 100 05/12/202015:22 WG1474372 Chlorodibromomethane U 14.0 100 100 05/12/202015:22 WG1474372 Chloroethane U 19.2 500 100 05/12/202015:22 WG1474372 Chloroform U 11.1 500 100 05/12/202015:22 WG1474372 Chloromethane U 96.0 250 100 05/12/202015:22 WG1474372 2-Chlorotoluene U 10.6 100 100 05/12/202015:22 WG1474372 4-Chlorotoluene U 11.4 100 100 05/12/202015:22 WG1474372 1,2-Dibromo-3-Chloropropane U 27.6 500 100 05/12/202015:22 WG1474372 1,2-Dibromoethane U 12.6 100 100 05/12/202015:22 WG1474372 Dibromomethane U 12.2 100 100 05/12/202015:22 WG1474372 1,2-Dichlorobenzene U 10.7 100 100 05/12/202015:22 WG1474372 1,3-Dichlorobenzene U 11.0 100 100 05/12/202015:22 WG1474372 1,4-Dichlorobenzene U 12.0 100 100 05/12/202015:22 WG1474372 Dichlorodifluoromethane U 37.4 500 100 05/12/202015:22 WG1474372 1,1-Dichloroethane U 10.0 100 100 05/12/202015:22 WG1474372 1,2-Dichloroethane U 8.19 100 100 05/12/202015:22 WG1474372 1,1-Dichloroethene U 18.8 100 100 05/12/202015:22 WG1474372 cis-1,2-Dichloroethene U 12.6 100 100 05/12/202015:22 WG1474372 trans-1,2-Dichloroethene U 14.9 100 100 05/12/202015:22 WG1474372 1,2-Dichloropropane U 14.9 100 100 05/12/202015:22 WG1474372 1,1-Dichloropropene U 14.2 100 100 05/12/202015:22 WG1474372 1,3-Dichloropropane U 11.0 100 100 05/12/202015:22 WG1474372 2,2-Dichloropropane U 16.1 100 100 05/12/202015:22 WG1474372 Di -isopropyl ether U 10.5 100 100 05/12/202015:22 WG1474372 Ethylbenzene 179 13.7 100 100 05/12/202015:22 WG1474372 Hexachloro-1,3-butadiene U 33.7 100 100 05/17/2020 22:05 WG1476286 Isopropylbenzene 38.5 J 10.5 100 100 05/12/202015:22 WG1474372 p-Isopropyltoluene 36.9 J 12.0 100 100 05/12/202015:22 WG1474372 2-Butanone(MEK) U 119 1000 100 05/12/202015:22 WG1474372 Methylene Chloride U 43.0 500 100 05/12/202015:22 WG1474372 4-Methyl-2-pentanone (MIBK) U 47.8 1000 100 05/12/202015:22 WG1474372 Methyl tert-butyl ether U 10.1 100 100 05/12/202015:22 WG1474372 Naphthalene 378 J 100 500 100 05/12/202015:22 WG1474372 n-Propylbenzene 139 9.93 100 100 05/12/202015:22 WG1474372 Styrene U 11.8 100 100 05/12/202015:22 WG1474372 1,1,1,2-Tetrachloroethane U 14.7 100 100 05/12/202015:22 WG1474372 1,1,2,2-Tetrachloroethane U 13.3 100 100 05/12/202015:22 WG1474372 Tetrachloroethene U 30.0 100 100 05/12/202015:22 WG1474372 Toluene U 27.8 100 100 05/12/202015:22 WG1474372 1,2,3-Trichlorobenzene U 23.0 100 100 05/12/202015:22 WG1474372 1,2,4-Trichlorobenzene U 48.1 100 100 05/12/202015:22 WG1474372 1,1,1-Trichloroethane U 14.9 100 100 05/12/202015:22 WG1474372 1,1,2-Trichloroethane U 15.8 100 100 05/12/202015:22 WG1474372 Trichloroethene U J4 19.0 100 100 05/12/202015:22 WG1474372 ACCOUNT: PROJECT: SDG: DATE/TIME: PAGE: Excel Civil & Environmental Associates 23056 L1216447 05/18/2013:45 5 of 18 FP1 FTc FSS 4 Cn FC] F q, FAI FSC ONE LAB. NATIONWIDE. MW-8 SAMPLE RESULTS - 01 Collected date/time: 05/07/20 12:30 L1216447 Volatile Organic Compounds (GC/MS) by Method 620OB-2011 Analyte Trichlorofluoromethane 1,2,3-Trichloropropane 1,2,4-Tri methyl ben zen e 1,3,5-Trim ethyl benzene Vinyl chloride o-Xylene m&p-Xylenes (S) Toluene-d8 (S) Toluene-d8 (S) 4-Bromof/uorobenzene (S) 4-Bromof/uorobenzene (S) 1,2-Dich/oroethane-d4 (S) 1,2-Dich/oroethane-d4 Result ug/I Qualifier MDL ug/I RDL ug/I Dilution Analysis date / time IJ 16.0 500 100 05/12/202015:22 J 23.7 250 100 05/12/202015:22 1160 32.2 100 100 05/12/202015:22 185 10.4 100 100 05/12/202015:22 IJ 23.4 100 100 05/12/202015:22 271 17.4 100 100 05/12/202015:22 549 43.0 200 100 05/12/202015:22 108 80.0-120 051121202015.22 108 80.0-120 0511712020 22: 05 102 77.0-126 051121202015.22 106 77.0-126 0511712020 22.05 107 70.0-130 051121202015.22 ill 70.0-130 0511712020 22:05 Batch WG1474372 WG1474372 WG1474372 WG1474372 WG1474372 WG1474372 WG1474372 WG1474372 WG1476286 WG1474372 WG1476286 WG1474372 WG1476286 Fp FTc FS Fn N Fc F, FAI FSC ACCOUNT: PROJECT: SDG: DATE/TIME: PAGE: Excel Civil & Environmental Associates 23056 L1216447 05/18/2013:45 6 of 18 MW-9 SAMPLE RESULTS - 02 ONE LAB. NATIONWIDE. Collected date/time: 05/07/20 13:50 L1216447 Volatile Organic Compounds (GC/MS) by Method 620OB-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/I ug/I ug/I date / time Acetone U 11.3 50.0 1 05/12/202015:42 WG1474372 Acrolein U J4 2.54 50.0 1 05/17/2020 21:45 WG1476286 Acrylonitrile U 0.671 10.0 1 05/12/202015:42 WG1474372 Benzene 0.169 J 0.0941 1.00 1 05/12/202015:42 WG1474372 Bromobenzene U 0.118 1.00 1 05/12/202015:42 WG1474372 Bromodichloromethane U 0.136 1.00 1 05/12/202015:42 WG1474372 Bromoform U 0.129 1.00 1 05/12/202015:42 WG1474372 Bromomethane U 0.605 5.00 1 05/12/202015:42 WG1474372 n-Butylbenzene U 0.157 1.00 1 05/12/202015:42 WG1474372 sec -Butyl benzene U 0.125 1.00 1 05/12/202015:42 WG1474372 ter[-Butylbenzene U 0.127 1.00 1 05/12/202015:42 WG1474372 Carbon tetrachloride U 0.128 1.00 1 05/12/202015:42 WG1474372 Chlorobenzene U J4 0.116 1.00 1 05/12/202015:42 WG1474372 Chlorodibromomethane U 0.140 1.00 1 05/12/202015:42 WG1474372 Chloroethane U 0.192 5.00 1 05/12/202015:42 WG1474372 Chloroform U 0.111 5.00 1 05/12/202015:42 WG1474372 Chloromethane U 0.960 2.50 1 05/12/202015:42 WG1474372 2-Chlorotoluene U 0.106 1.00 1 05/12/202015:42 WG1474372 4-Chlorotoluene U 0.114 1.00 1 05/12/202015:42 WG1474372 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 05/12/202015:42 WG1474372 1,2-Dibromoethane U 0.126 1.00 1 05/12/202015:42 WG1474372 Dibromomethane U 0.122 1.00 1 05/12/202015:42 WG1474372 1,2-Dichlorobenzene U 0.107 1.00 1 05/12/202015:42 WG1474372 1,3-Dichlorobenzene U 0.110 1.00 1 05/12/202015:42 WG1474372 1,4-Dichlorobenzene U 0.120 1.00 1 05/12/202015:42 WG1474372 Dichlorodifluoromethane U 0.374 5.00 1 05/12/202015:42 WG1474372 1,1-Dichloroethane U 0.100 1.00 1 05/12/202015:42 WG1474372 1,2-Dichloroethane U 0.0819 1.00 1 05/12/202015:42 WG1474372 1,1-Dichloroethene U 0.188 1.00 1 05/12/202015:42 WG1474372 cis-1,2-Dichloroethene U 0.126 1.00 1 05/12/202015:42 WG1474372 trans-1,2-Dichloroethene U 0.149 1.00 1 05/12/202015:42 WG1474372 1,2-Dichloropropane U 0.149 1.00 1 05/12/202015:42 WG1474372 1,1-Dichloropropene U 0.142 1.00 1 05/12/202015:42 WG1474372 1,3-Dichloropropane U 0.110 1.00 1 05/12/202015:42 WG1474372 2,2-Dichloropropane U 0.161 1.00 1 05/12/202015:42 WG1474372 Di -isopropyl ether 0.123 J 0.105 1.00 1 05/12/202015:42 WG1474372 Ethylbenzene U 0.137 1.00 1 05/12/202015:42 WG1474372 Hexachloro-1,3-butadiene U 0.337 1.00 1 05/17/2020 21:45 WG1476286 Isopropylbenzene U 0.105 1.00 1 05/12/202015:42 WG1474372 p-Isopropyltoluene U 0.120 1.00 1 05/12/202015:42 WG1474372 2-Butanone (MEK) U 1.19 10.0 1 05/12/202015:42 WG1474372 Methylene Chloride U 0.430 5.00 1 05/12/202015:42 WG1474372 4-Methyl-2-pentanone (MIBK) U 0.478 10.0 1 05/12/202015:42 WG1474372 Methyl tert-butyl ether 5.75 0.101 1.00 1 05/12/202015:42 WG1474372 Naphthalene U 1.00 5.00 1 05/12/202015:42 WG1474372 n-Propylbenzene U 0.0993 1.00 1 05/12/202015:42 WG1474372 Styrene U 0.118 1.00 1 05/12/202015:42 WG1474372 1,1,1,2-Tetrachloroethane U 0.147 1.00 1 05/12/202015:42 WG1474372 1,1,2,2-Tetrachloroethane U 0.133 1.00 1 05/12/202015:42 WG1474372 Tetrachloroethene 0.715 J 0.300 1.00 1 05/12/202015:42 WG1474372 Toluene U 0.278 1.00 1 05/12/202015:42 WG1474372 1,2,3-Trichlorobenzene U 0.230 1.00 1 05/12/202015:42 WG1474372 1,2,4-Trichlorobenzene U 0.481 1.00 1 05/12/202015:42 WG1474372 1,1,1-Trichloroethane U 0.149 1.00 1 05/12/202015:42 WG1474372 1,1,2-Trichloroethane U 0.158 1.00 1 05/12/202015:42 WG1474372 Trichloroethene U J4 0.190 1.00 1 05/12/202015:42 WG1474372 FP1 FTc FSS 4 Cn FC] F q, FAI FSC ACCOUNT: PROJECT: SDG: DATE/TIME: PAGE: Excel Civil & Environmental Associates 23056 L1216447 05/18/2013:45 7 of 18 ONE LAB. NATIONWIDE. MW-9 SAMPLE RESULTS - 02 Collected date/time: 05/07/20 13:50 L1216447 Volatile Organic Compounds (GC/MS) by Method 620OB-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/I ug/I ug/I date / time Trichlorofluoromethane U 0.160 5.00 1 05/12/202015:42 WG1474372 1,2,3-Trichloropropane U 0.237 2.50 1 05/12/202015:42 WG1474372 1,2,4-Trimethylbenzene IJ 0.322 1.00 1 05/12/202015:42 WG1474372 1,3,5-Trimethyl benzene 0.110 J_ 0.104 1.00 1 05/12/202015:42 WG1474372 Vinyl chloride U 0.234 1.00 1 05/12/202015:42 WG1474372 o-Xylene 0.256 1_ 0.174 1.00 1 05/12/202015:42 WG1474372 m&p-Xylenes U 0.430 2.00 1 05/12/202015:42 WG1474372 (S) Toluene-d8 108 80.0-120 051121202015.42 WG1474372 (S) Toluene-d8 104 80.0-120 0511712020 21.45 WG1476286 (S) 4-Bromof/uorobenzene 102 77.0-126 051121202015.42 WG1474372 (S) 4-Bromof/uorobenzene 107 77.0-126 0511712020 21.45 WG1476286 (S) 1,2-Dich/oroethane-d4 108 70.0-130 0511212020 15.42 WG1474372 (S) 1,2-Dich/oroethane-d4 114 70.0-130 0511712020 21.45 WG1476286 Fp FTc FS Fn Fc F, FAI FSC ACCOUNT: PROJECT: SDG: DATE/TIME: PAGE: Excel Civil & Environmental Associates 23056 L1216447 05/18/2013:45 8 of 18 M W-10 R SAMPLE RESULTS - 03 ONE LAB. NATIONWIDE. Collected date/time: 05/07/20 13:15 L1216447 Volatile Organic Compounds (GC/MS) by Method 620OB-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/I ug/I ug/I date / time Acetone U 113 500 10 05/12/202016:02 WG1474372 Acrolein U J4 254 5000 100 05/17/2020 22:25 WG1476286 Acrylonitrile U 6.71 100 10 05/12/202016:02 WG1474372 Benzene 161 0.941 10.0 10 05/12/202016:02 WG1474372 Bromobenzene U 1.18 10.0 10 05/12/202016:02 WG1474372 Bromodichloromethane U 1.36 10.0 10 05/12/202016:02 WG1474372 Bromoform U 1.29 10.0 10 05/12/202016:02 WG1474372 Bromomethane U 6.05 50.0 10 05/12/202016:02 WG1474372 n-Butylbenzene 19.1 1.57 10.0 10 05/12/202016:02 WG1474372 sec -Butyl benzene 9.70 J 1.25 10.0 10 05/12/202016:02 WG1474372 ter[-Butylbenzene U 1.27 10.0 10 05/12/202016:02 WG1474372 Carbon tetrachloride U 1.28 10.0 10 05/12/202016:02 WG1474372 Chlorobenzene U J4 1.16 10.0 10 05/12/202016:02 WG1474372 Chlorodibromomethane U 1.40 10.0 10 05/12/202016:02 WG1474372 Chloroethane U 1.92 50.0 10 05/12/202016:02 WG1474372 Chloroform U 1.11 50.0 10 05/12/202016:02 WG1474372 Chloromethane U 9.60 25.0 10 05/12/202016:02 WG1474372 2-Chlorotoluene U 1.06 10.0 10 05/12/202016:02 WG1474372 4-Chlorotoluene U 1.14 10.0 10 05/12/202016:02 WG1474372 1,2-Dibromo-3-Chloropropane U 2.76 50.0 10 05/12/202016:02 WG1474372 1,2-Dibromoethane U 1.26 10.0 10 05/12/202016:02 WG1474372 Dibromomethane U 1.22 10.0 10 05/12/202016:02 WG1474372 1,2-Dichlorobenzene U 1.07 10.0 10 05/12/202016:02 WG1474372 1,3-Dichlorobenzene U 1.10 10.0 10 05/12/202016:02 WG1474372 1,4-Dichlorobenzene U 1.20 10.0 10 05/12/202016:02 WG1474372 Dichlorodifluoromethane U 3.74 50.0 10 05/12/202016:02 WG1474372 1,1-Dichloroethane U 1.00 10.0 10 05/12/202016:02 WG1474372 1,2-Dichloroethane U 0.819 10.0 10 05/12/202016:02 WG1474372 1,1-Dichloroethene U 1.88 10.0 10 05/12/202016:02 WG1474372 cis-1,2-Dichloroethene U 1.26 10.0 10 05/12/202016:02 WG1474372 trans-1,2-Dichloroethene U 1.49 10.0 10 05/12/202016:02 WG1474372 1,2-Dichloropropane U 1.49 10.0 10 05/12/202016:02 WG1474372 1,1-Dichloropropene U 1.42 10.0 10 05/12/202016:02 WG1474372 1,3-Dichloropropane U 1.10 10.0 10 05/12/202016:02 WG1474372 2,2-Dichloropropane U 1.61 10.0 10 05/12/202016:02 WG1474372 Di -isopropyl ether U 1.05 10.0 10 05/12/202016:02 WG1474372 Ethylbenzene 2100 13.7 100 100 05/17/2020 22:25 WG1476286 Hexachloro-1,3-butadiene U 33.7 100 100 05/17/2020 22:25 WG1476286 Isopropylbenzene 80.7 1.05 10.0 10 05/12/202016:02 WG1474372 p-Isopropyltoluene 5.42 J 1.20 10.0 10 05/12/202016:02 WG1474372 2-Butanone (MEK) U 11.9 100 10 05/12/202016:02 WG1474372 Methylene Chloride U 4.30 50.0 10 05/12/202016:02 WG1474372 4-Methyl-2-pentanone (MIBK) U 4.78 100 10 05/12/202016:02 WG1474372 Methyl tert-butyl ether U 1.01 10.0 10 05/12/202016:02 WG1474372 Naphthalene 642 100 500 100 05/17/2020 22:25 WG1476286 n-Propylbenzene 281 0.993 10.0 10 05/12/202016:02 WG1474372 Styrene U 1.18 10.0 10 05/12/202016:02 WG1474372 1,1,1,2-Tetrachloroethane U 1.47 10.0 10 05/12/202016:02 WG1474372 1,1,2,2-Tetrachloroethane U 1.33 10.0 10 05/12/202016:02 WG1474372 Tetrachloroethene U 3.00 10.0 10 05/12/202016:02 WG1474372 Toluene 2270 27.8 100 100 05/17/2020 22:25 WG1476286 1,2,3-Trichlorobenzene U 2.30 10.0 10 05/12/202016:02 WG1474372 1,2,4-Trichlorobenzene U 4.81 10.0 10 05/12/202016:02 WG1474372 1,1,1-Trichloroethane U 1.49 10.0 10 05/12/202016:02 WG1474372 1,1,2-Trichloroethane U 1.58 10.0 10 05/12/202016:02 WG1474372 Trichloroethene U J4 1.90 10.0 10 05/12/202016:02 WG1474372 ACCOUNT: PROJECT: SDG: DATE/TIME: PAGE: Excel Civil & Environmental Associates 23056 L1216447 05/18/2013:45 9 of 18 FP1 FTc FSS 4 Cn FC] F q, FAI FSC ONE LAB. NATIONWIDE. MW-10R SAMPLE RESULTS - 03 Collected date/time: 05/07/20 13:15 L1216447 Volatile Organic Compounds (GC/MS) by Method 620OB-2011 Analyte Result ug/I Qualifier MDL ug/I RDL ug/I Dilution Analysis date / time Trichlorofluoromethane U 1.60 50.0 10 05/12/202016:02 1,2,3-Trichloropropane J 2.37 25.0 10 05/12/202016:02 1,2,4-Trimethylbenzene 3290 J4 32.2 100 100 05/17/2020 22:25 1,3,5-Trimethyl benzene 698 1.04 10.0 10 05/12/202016:02 Vinyl chloride U 2.34 10.0 10 05/12/202016:02 o-Xylene 4300 17.4 100 100 05/17/2020 22:25 m&p-Xylenes 9750 43.0 200 100 05/17/2020 22:25 (S) Toluene-d8 102 80.0-120 051121202016.02 (S) Toluene-d8 104 80.0-120 0511712020 2215 (S) 4-Bromof/uorobenzene 94.3 77.0-126 051121202016.02 (S) 4-Bromof/uorobenzene 104 77.0-126 0511712020 2215 (S)1,2-Dich/oroethane-d4 105 70.0-130 051121202016.02 (S)1,2-Dich/oroethane-d4 110 70.0-130 0511712020 2215 Batch WG1474372 WG1474372 WG1476286 WG1474372 WG1474372 WG1476286 WG1476286 WG1474372 WG1476286 WG1474372 WG1476286 WG1474372 WG1476286 Fp FTc FS Fn N Fc F, FAI FSC ACCOUNT: PROJECT: SDG: DATE/TIME: PAGE: Excel Civil & Environmental Associates 23056 L1216447 05/18/2013:45 10 of 18 WG1474372 QUALITY CONTROL SUMMARY ONE LAB. NATIONWIDE. Volatile Organic Compounds (GC/MS) by Method 620OB-2011 L1216447-01,02,03 Method Blank (MB) (MB) R3527028-2 05/12/20 09:17 MB Result Analyte ug/I Acetone U Acrylonitrile U Benzene U Bromobenzene U Bromodichloromethane U Bromoform U Bromomethane U n-Butylbenzene U sec -Butyl benzene U tert-Butylbenzene U Carbon tetrachloride U Chlorobenzene U Chlorodibromomethane U Chloroethane U Chloroform U Chloromethane U 2-Chlorotoluene U 4-Chlorotoluene U 1,2-Dibromo-3-Chloropropane U 1,2-Dibromoethane U Dibromomethane U 1,2-Dichlorobenzene U 1,3-Dichlorobenzene U 1,4-Dichlorobenzene U Dichlorodifluoromethane U 1,1-Dichloroethane U 1,2-Dichloroethane U 1,1-Dichloroethene U cis-1,2-Dichloroethene U trans-1,2-Dichloroethene U 1,2-Dichloropropane U 1,1-Dichloropropene U 1,3-Dichloropropane U 2,2-Dichloropropane U Di -isopropyl ether U Ethylbenzene U Isopropylbenzene U p-Isopropyltoluene U 2-Butanone (MEK) U Methylene Chloride U MB Qualifier MB MDL ug/I 11.3 0.671 0.0941 0.118 0.136 0.129 0.605 0.157 0.125 0.127 0.128 0.116 0.140 0.192 0.111 0.960 0.106 0.114 0.276 0.126 0.122 0.107 0.110 0.120 0.374 0.100 0.0819 0.188 0.126 0.149 0.149 0.142 0.110 0.161 0.105 0.137 0.105 0.120 1.19 0.430 MB RDL ug/I 50.0 10.0 1.00 1.00 1.00 1.00 5.00 1.00 1.00 1.00 1.00 1.00 1.00 5.00 5.00 2.50 1.00 1.00 5.00 1.00 1.00 1.00 1.00 1.00 5.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 10.0 5.00 FP1 FTC FSS 4 Cn FSr �GI FAI FSC ACCOUNT: Excel Civil & Environmental Associates PROJECT: SDG: DATE/TIME: PAGE: 23056 L1216447 05/18/2013:45 11 of 18 WG1474372 Volatile Organic Compounds (GC/MS) by Method 620OB-2011 Method Blank (MB) (MB) R3527028-2 05/12/20 09:17 MB Result Analyte ug/I 4-Methyl-2-pentanone (MIBK) U Methyl tert-butyl ether U Naphthalene U n-Propylbenzene U Styrene U 1,1,1,2-Tetrachloroethane U 1,1,2,2-Tetrachloroethane U Tetrachloroethene U Toluene U 1,2,3-Trichlorobenzene U 1,2,4-Trichlorobenzene U 1,1,1-Trichloroethane U 1,1,2-Trichloroethane U Trichloroethene U Trichlorofluoromethane U 1,2,3-Trichloropropane U 1,2,4-Trimethylbenzene U 1,3,5-Trimethylbenzene U Vinyl chloride U o-Xylene U m&p-Xylene U (S) Toluene-d8 108 (S) 4-Bromofluorobenzene 99.2 (S) 1,2-Dich/oroethone-d4 106 MB Qualifier MB MDL MB RDL ug/I ug/I Laboratory Control Sample (LCS) QUALITY CONTROL SUMMARY L1216447-01,02,03 0.478 10.0 0.101 1.00 1.00 5.00 0.0993 1.00 0.118 1.00 0.147 1.00 0.133 1.00 0.300 1.00 0.278 1.00 0.230 1.00 0.481 1.00 0.149 1.00 0.158 1.00 0.190 1.00 0.160 5.00 0.237 2.50 0.322 1.00 0.104 1.00 0.234 1.00 0.174 1.00 0.430 2.00 80.0-120 77.0-126 70.0-130 (LCS) R3527028-1 05/12/20 08:36 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte ug/I ug/I % % Acetone 25.0 29.4 118 19.0-160 Acrylonitrile 25.0 31.9 128 55.0-149 Benzene 5.00 5.30 106 70.0-123 Bromobenzene 5.00 4.80 96.0 73.0-121 Bromodichloromethane 5.00 5.32 106 75.0-120 Bromoform 5.00 5.03 101 68.0-132 Bromomethane 5.00 5.41 108 10.0-160 n-Butylbenzene 5.00 5.23 105 73.0-125 sec -Butyl benzene 5.00 5.13 103 75.0-125 ONE LAB. NATIONWIDE. FP1 FTC FSS 4 Cn FSr �GI FAI FSC ACCOUNT: PROJECT: SDG: DATE/TIME: PAGE: Excel Civil & Environmental Associates 23056 L1216447 05/18/2013:45 12 of 18 WG1474372 QUALITY CONTROL SUMMARY ONE LAB. NATIONWIDE. Volatile Organic Compounds (GC/MS) by Method 620OB-2011 1-1216447-01,02,03 Laboratory Control Sample (LCS) Cp (LCS) R3527028-1 05/12/20 08:36 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier z Analyte ug/I ug/I % % TC tert-Butylbenzene 5.00 5.40 108 76.0-124 Carbon tetrachloride 5.00 5.90 118 68.0-126 E Chlorobenzene 5.00 6.20 124 80.0-121 J4 Chlorodibromomethane 5.00 5.61 112 77.0-125 Chloroethane 5.00 5.44 109 47.0-150 FC n Chloroform 5.00 5.35 107 73.0-120 Chloromethane 5.00 6.36 127 41.0-142 E 2-Chlorotoluene 5.00 5.28 106 76.0-123 4-Chlorotoluene 5.00 5.26 105 75.0-122 1,2-Dibromo-3-Chloropropane 5.00 4.78 95.6 58.0-134 ce 1,2-Dibromoethane 5.00 5.88 118 80.0-122 Dibromomethane 5.00 5.59 112 80.0-120 FG I 1,2-Dichlorobenzene 5.00 5.48 110 79.0-121 1,3-Dichlorobenzene 5.00 5.45 109 79.0-120 1,4-Dichlorobenzene 5.00 5.68 114 79.0-120 FAI Dichlorodifluoromethane 5.00 6.01 120 51.0-149 1,1-Dichloroethane 5.00 5.73 115 70.0-126 E 1,2-Dichloroethane 5.00 5.62 112 70.0-128 1,1-Dichloroethene 5.00 5.65 113 71.0-124 cis-1,2-Dichloroethene 5.00 5.42 108 73.0-120 trans-1,2-Dichloroethene 5.00 5.78 116 73.0-120 1,2-Dichloropropane 5.00 5.87 117 77.0-125 1,1-Dichloropropene 5.00 5.78 116 74.0-126 1,3-Dichloropropane 5.00 5.62 112 80.0-120 2,2-Dichloropropane 5.00 5.55 111 58.0-130 Di -isopropyl ether 5.00 5.59 112 58.0-138 Ethylbenzene 5.00 5.44 109 79.0-123 Isopropylbenzene 5.00 5.20 104 76.0-127 p-Isopropyltoluene 5.00 5.25 105 76.0-125 2-Butanone (MEK) 25.0 30.3 121 44.0-160 Methylene Chloride 5.00 5.79 116 67.0-120 4-Methyl-2-pentanone (MIBK) 25.0 30.3 121 68.0-142 Methyl tert-butyl ether 5.00 5.34 107 68.0-125 Naphthalene 5.00 5.24 105 54.0-135 n-Propylbenzene 5.00 5.32 106 77.0-124 Styrene 5.00 5.42 108 73.0-130 1,1,1,2-Tetrachloroethane 5.00 5.70 114 75.0-125 1,1,2,2-Tetrachloroethane 5.00 5.28 106 65.0-130 Tetrachloroethene 5.00 6.06 121 72.0-132 Toluene 5.00 5.75 115 79.0-120 ACCOUNT: PROJECT: SDG: DATE/TIME: PAGE: Excel Civil & Environmental Associates 23056 L1216447 05/18/2013:45 13 of 18 WG1474372 QUALITY CONTROL SUMMARY ONE LAB. NATIONWIDE. Volatile Organic Compounds (GC/MS) by Method 620OB-2011 1-1216447-01,02,03 Laboratory Control Sample (LCS) FP1(LCS) R3527028-1 05/12/20 08:36 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte ug/I Ug/I % % z TC 1,2,3-Trichlorobenzene 5.00 5.87 117 50.0-138 1,2,4-Trichlorobenzene 5.00 4.31 86.2 57.0-137 FSS 1,1,1-Trichloroethane 5.00 5.67 113 73.0-124 1,1,2-Trichloroethane 5.00 5.64 113 80.0-120 Trichloroethene 5.00 6.46 129 78.0-124 J4 rCn Trichlorofluoromethane 5.00 5.15 103 59.0-147 1,2,3-Trichloropropane 5.00 5.71 114 73.0-130 FSr 1,2,4-Trimethylbenzene 5.00 4.94 98.8 76.0-121 1,3,5-Trimethylbenzene 5.00 5.04 101 76.0-122 Vinyl chloride 5.00 6.13 123 67.0-131 o-Xylene 5.00 5.62 112 80.0-122 m&p-Xylene 10.0 11.3 113 80.0-122 �GI (S) Toluene-d8 107 80.0-120 (S) 4-Bromofluorobenzene 102 77.0-126 (S)1,2-Dich/oroethane-d4 106 70.0-130 FAI FSC ACCOUNT: PROJECT: SDG: DATE/TIME: PAGE: Excel Civil & Environmental Associates 23056 L1216447 05/18/2013:45 14 of 18 WG1476286 QUALITY CONTROL SUMMARY Volatile Organic Compounds (GC/MS) by Method 620OB-2011 L1216447-01,02,03 Method Blank (MB) (MB) R3529011-2 05/17/20 20:42 MB Result MB Qualifier MB MDL MB RDL Analyte ug/I ug/I ug/I Acrolein U 2.54 50.0 Ethylbenzene U 0.137 1.00 Hexachloro-1,3-butadiene U 0.337 1.00 Naphthalene U 1.00 5.00 Toluene U 0.278 1.00 1,2,4-Trimethylbenzene U 0.322 1.00 o-Xylene U 0.174 1.00 m&p-Xylenes U 0.430 2.00 (S) Toluene-d8 108 80.0-120 (S) 4-Bromof/uorobenzene 105 77.0-126 (S)1,2-Dich/oroethone-d4 109 70.0-130 Laboratory Control Sample (LCS) ONE LAB. NATIONWIDE. (LCS) R3529011-1 05/17/20 20:01 Spike Amount LCS Result LCS Rec. Rec. Limits LCS Qualifier Analyte ug/I ug/I % % Acrolein 25.0 70.8 283 10.0-160 J4 Ethylbenzene 5.00 4.64 92.8 79.0-123 Hexachloro-1,3-butadiene 5.00 5.75 115 54.0-138 Naphthalene 5.00 4.63 92.6 54.0-135 Toluene 5.00 4.78 95.6 79.0-120 1,2,4-Trimethylbenzene 5.00 6.23 125 76.0-121 J4 o-Xylene 5.00 4.96 99.2 80.0-122 m&p-Xylenes 10.0 9.65 96.5 80.0-122 (S) Toluene-d8 107 80.0-120 (S) 4-Bromofluorobenzene 104 77.0-126 (S)1,2-Dich/oroethone-d4 112 70.0-130 ACCOUNT: PROJECT: SDG: DATE/TIME: PAGE: Excel Civil & Environmental Associates 23056 L1216447 05/18/2013:45 15 of 18 FP1 FTC FSS 4 Cn FSr �GI FAI FSC GLOSSARY OF TERMS ONE LAB. NATIONWIDE. Guide to Reading and Understanding Your Laboratory Report FP1 The information below is designed to better explain the various terms used in your report of analytical results from the Laboratory. This is not intended as a comprehensive explanation, and if you have additional questions please contact your project representative. Results Disclaimer - Information that may be provided by the customer, and contained within this report, include Permit Limits, Project Name, FTC Sample ID, Sample Matrix, Sample Preservation, Field Blanks, Field Spikes, Field Duplicates, On -Site Data, Sampling Collection Dates/Times, and Sampling Location. Results relate to the accuracy of this information provided, and as the samples are received. Abbreviations and Definitions FSS MDL Method Detection Limit. RDL Reported Detection Limit. [Cn] Rec. Recovery. RPD Relative Percent Difference. FSr SDG Sample Delivery Group. Surrogate (Surrogate Standard) - Analytes added to every blank, sample, Laboratory Control Sample/Duplicate and (S) Matrix Spike/Duplicate; used to evaluate analytical efficiency by measuring recovery. Surrogates are not expected to be rqC detected in all environmental media. U Not detected at the Reporting Limit (or MDL where applicable). Analyte The name of the particular compound or analysis performed. Some Analyses and Methods will have multiple analytes reported. If the sample matrix contains an interfering material, the sample preparation volume or weight values differ from the Dilution standard, or if concentrations of analytes in the sample are higher than the highest limit of concentration that the FAI laboratory can accurately report, the sample may be diluted for analysis. If a value different than 1 is used in this field, the result reported has already been corrected for this factor. These are the target % recovery ranges or % difference value that the laboratory has historically determined as normal Limits for the method and analyte being reported. Successful QC Sample analysis will target all analytes recovered or SC duplicated within these ranges. This column provides a letter and/or number designation that corresponds to additional information concerning the result Qualifier reported. If a Qualifier is present, a definition per Qualifier is provided within the Glossary and Definitions page and potentially a discussion of possible implications of the Qualifier in the Case Narrative if applicable. The actual analytical final result (corrected for any sample specific characteristics) reported for your sample. If there was no measurable result returned for a specific analyte, the result in this column may state "ND" (Not Detected) or "BDL" Result (Below Detectable Levels). The information in the results column should always be accompanied by either an MDL (Method Detection Limit) or RDL (Reporting Detection Limit) that defines the lowest value that the laboratory could detect or report for this analyte. Uncertainty (Radiochemistry) Confidence level of 2 sigma. A brief discussion about the included sample results, including a discussion of any non -conformances to protocol Case Narrative (Cn) observed either at sample receipt by the laboratory from the field or during the analytical process. If present, there will be a section in the Case Narrative to discuss the meaning of any data qualifiers used in the report. Quality Control This section of the report includes the results of the laboratory quality control analyses required by procedure or Summary (Qc) analytical methods to assist in evaluating the validity of the results reported for your samples. These analyses are not being performed on your samples typically, but on laboratory generated material. This is the document created in the field when your samples were initially collected. This is used to verify the time and Sample Chain of date of collection, the person collecting the samples, and the analyses that the laboratory is requested to perform. This Custody (Sc) chain of custody also documents all persons (excluding commercial shippers) that have had control or possession of the samples from the time of collection until delivery to the laboratory for analysis. This section of your report will provide the results of all testing performed on your samples. These results are provided Sample Results (Sr) by sample ID and are separated by the analyses performed on each sample. The header line of each analysis section for each sample will provide the name and method number for the analysis reported. Sample Summary (Ss) This section of the Analytical Report defines the specific analyses performed for each sample ID, including the dates and times of preparation and/or analysis. Qualifier Description J The identification of the analyte is acceptable; the reported value is an estimate. J4 The associated batch QC was outside the established quality control range for accuracy. ACCOUNT: PROJECT: SDG: DATE/TIME: PAGE: Excel Civil & Environmental Associates 23056 L1216447 05/18/2013:45 16 of 18 ACCREDITATIONS & LOCATIONS ONE LAB. NATIONWIDE. Pace National is the only environmental laboratory accredited/certified to support your work nationwide from one location. One phone call, one point of contact, one laboratory. No other lab is as accessible or prepared to handle your needs throughout the country. Our capacity and capability from our single location laboratory is comparable to the collective totals of the network laboratories in our industry. The most significant benefit to our one location design is the design of our laboratory campus. The model is conducive to accelerated productivity, decreasing FP1 turn -around time, and preventing cross contamination, thus protecting sample integrity. Our focus on premium quality and prompt service allows us to be YOUR LAB OF CHOICE. Not all certifications held by the laboratory are applicable to the results reported in the attached report. Accreditation is only applicable to the test methods specified on each scope of accreditation held by Pace National. Z Tc State Accreditations f—� Alabama 40660 Nebraska _ NE-OS-15-05 SS Alaska 17-026 Nevada TN-03-2002-34 Arizona AZO612 New Hampshire 2975 Arkansas 88-0469 New Jersey_NELAP TNO02 C n California 2932 New Mexico n/a Colorado TN00003 New York 11742 s Connecticut PH-0197 North Carolina Env375 Sr Florida E87487 North Carolina' DW21704 Georgia NELAP North Carolina' 41 Georgia' 923 North Dakota R-140 RC Idaho TN00003 Ohio—VAP CL0069 Illinois 200008 Oklahoma 9915 Indiana C-TN-01 Oregon TN200002 G Iowa 364 Pennsylvania 68-02979 Kansas E-10277 Rhode Island LA000356 Kentucky76 90010 South Carolina 84004 Kentucky 2 16 South Dakota n/a Louisiana A130792 Tennessee' 4 2006 Louisiana' LA180010 Texas T104704245-18-15 [SC Maine TN0002 Texas' LABO152 Maryland 324 Utah Massachusetts M-TNO03 Vermont Michigan 9958 Virginia Minnesota 047-999-395 Washington Mississippi TN00003 West Virginia Missouri 340 Wisconsin Montana CERT0086 Wyoming Third Party Federal Accreditations A21LA — ISO 17025 1461.01 AIHA-LAP,LLC EMLAP A21LA — ISO 17025 5 1461.02 DOD Canada 1461.01 USDA EPA—Crypto TN00003 ' Drinking Water 'Underground Storage Tanks 3 Aquatic Toxicity 4 Chemical/Microbiological 5 Mold 6 Wastewater n/a Accreditation not applicable Our Locations TN00003 VT2006 460132 C847 233 9980939910 A2LA 100789 1461.01 P330-15-00234 Pace National has sixty-four client support centers that provide sample pickup and/or the delivery of sampling supplies. If you would like assistance from one of our support offices, please contact our main office. Pace National performs all testing at our central laboratory. WA MT NO OR MN T ID T WI NY SD WY MI NV T NE IA OH T PA T f IL Ills WY vA UT T CA�� T KS MO KY W 11110 � NM O� AR N Sc T MS A`7L GA T TX * LA T AK T T q FL wo HI ACCOUNT: PROJECT: SDG: DATE/TIME: Excel Civil & Environmental Associates 23056 L1216447 05/18/2013:45 ME PAGE: 17 of 18 Billing Information: Analysis ContaiPreservative Chain of Custody Page _of_ Excel Civil & Environmental Associates Mr. Mike Stanforth LPCh 625 Huntsman Court CeAnalXicale 625 Huntsman Court Gastonia, NC 28054G"br�"'°a"w`"" Gastonia, NC 28054 12065 Lebanon Rd Report to: Email To: Mr. Mike Stanforth mstanforth@excelengr.com;dfarris@excelengr.c Mount Juliet, TN 37122 _ Plane: 615 758 5959 ' Phone, 900.767-SB59 ft`-+ :✓� • u Fax: 615-759-5ass Project Description: Servco 00311 Concord City/State Collected: Please Circle: PT MT CT [� Phone. 704-853-0800 Client Project M 23056 Lab Project 1F EXCELENVR-23056 SDG N ruG q� 7 T A022 Collected by (print): Site/Facility ID R P.O. R 6'1 ZU14 E36 'Z�1102& = J a Acnnum: tXCELENVR Template:T158102 Prelogin: P769913 Collected by (signature): }ganvg.d}aL7{1.�,.. _ Rush? (Lab MUST Be Notified) Quote R _Same Day _Five Day t/ (/ Immediately Packed on Ice N _ y _Neat Day _S Day Iliad Only) Date Results Needed _ Two Day _ 10 Day (Bad only) No. _ Three Day of O O to PM: 873-Heather Wagner PB: snipped Via: FedEX Ground Sample lD Comp/Grab Matrix• Depth Date Time ^tom Raman. samPiexlub onpl - Mw-a _ br GW 5�7 ZF l2 U 3 X o� MW-9 6 w{I GW i rlo r15D 3 X MW-10R / 0 (�k GW S('II-2.a 315 3 X J J Sample Receipt Checklist CDC Seal Present/Intact: "Matrix:Remarks SS -Soil AIR - Air F-Fllter : pE Temp_ GW Groundwater B- Bioassay WW- WasteWater DW- Drinkin Water g OT - Other Flow Other CDC Signed/Accurate: -Y _N Bottles arrive intact: 10.1.—N Correct bottles used: � _N Sufficient volume sent: Y N — — If Applicable _ VDA Zero Heddapace: 1Y N Preservation Correct/Checked: yY� N RAC, Screen <0.5 cR/hr: /Y N _ — Samples returned via: _UPS _Fed Ex Courier '7 / TrackingM 7-S o 000l 06- 5 l Relinquished by: (Signature) Date: / i�7h, Time: f�3o Received by' (Signature) Trip Blank Received: Y 3 N / T CE eoH Relinquished K: (Signature) Date: Tine: Received by. (Signature) ,TeWAOy T Bottles Received: If preservation required by Login: Date/Time Relinquished by :(Signature) Date: Time: Received for lab by: (Signature) Date: Time: SNCF Hold: Condition: / OK Beverly, Trudy From: Beverly, Trudy Sent: Tuesday, May 19, 2020 3:37 PM To: Mike Stanforth; 'Donna Farris' Subject: RE: [External] Servco 00311 Incident 27502 - ePATA Request Received. Trudy Trudy Beverly, L.G. Hydrogeologist, Division of Waste Management D— I E North Carolina Department of Environmental Quality LMpjrL��[0 � � �r UST Section, Mooresville Regional Office 704.235.2182 (Office) Trudy. B everlykncdenn gov Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties. Office Mailing Address: 610 East Center Avenue, Suite 301 Mooresville, NC 28115 Branch's Underground Storage Tanks Website Address: ht_pt s://deg.nc.gov/about/divisions/waste-management/ust Branch's Above Ground Storage Tanks Website Address: hgps://deg.nc.gov/about/divisions/waste-management/ust/ast-proeram INTERACTIVE MAPS WITH DWM SITES AND PERMITTED FACILITIES: httos://dea.nc. eov/about/divisions/waste-manaeement/waste-manaeement-rules-data/waste-manaeement-eis-mans File Review Procedures: ht!ps:Hdeq.nc. gov/about/divisions/waste-manaeement/ust/file-review-procedures#mooresville-regional-office ONLINE ACCESS TO UST SECTION DOCUMENTS (Laserfiche): htips://deg.nc.gov/about/divisions/waste-manaaement/laserfiche Document Submittal & UST File Names for Laserfiche Policies: httys://files.ne.tiov/nedea/Waste%2OManaeement/DWM/UST[W hatsNew/Final-Electronic-Document-Submittal-Policv.udf httys://files.nc. gov/ncdeq/Waste%20Management/D WMJUST/Corrective%2OAction/UST%2Ofile%20names%20for%2OLaserfiche.docx From: Mike Stanforth [mailto:mstanforth@excelengr.com] Sent: Tuesday, May 19, 2020 12:31 PM To: Beverly, Trudy <trudy.beverly@ncdenr.gov>; 'Donna Farris' <dfarris@excelengr.com> Subject: RE: [External] Servco 00311 Incident 27502 - ePATA Request • External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to nc. ov Trudy — attached please find the groundwater monitoring report for Incident 27502, former SERVCO 00311. If you have any questions, please feel free to contact me. Thank you - Mike Stanforth - Principal Engineer Excel Civil Et Environmental Associates, PLLC (ECEA) 704-853-0800 o 704-913-7614 c www.excelengr.com (excelengr.corn I AL gpecea !L!N drl L lnn�3nmmltil ila �8lidYi A SRP Company 2017 President, Groundwater Professionals of North Carolina, www.gwpnc.org rgwpnc.org `APlease consider the environment before printing this e-mail. CONFIDENTIALITY NOTICE: The information in this e-mail is confidential. It is intended solely for the addressee. Access to this e-mail by anyone else is unauthorized. If you are not the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it, is prohibited and may be unlawful. When addressed to our clients, any opinions or advice contained in this e-mail are subject to the terms and conditions expressed in the governing ECEA client engagement letter. From: Beverly, Trudy[mailto:trudy.beverly@ncdenr.gov] Sent: Monday, December 16, 2019 9:33 AM To: Donna Farris <dfarris@excelengr.com> Cc: Mike Stanforth <mstanforth@excelengr.com> Subject: RE: [External] Servco 00311 Incident 27502 - ePATA Request Please see the attached Preapproval Task Authorization Form (27502-47) for Servco No. 00311 located in Concord, Cabarrus County, North Carolina. The form should be signed and emailed to Scott Ryals at Scott.Ryals@ncdenr.gov with UST's Trust Fund Branch. "Preapproval is not valid (i.e., claimable) until receipt is 'Confirmed' by the RP or their designee and returned to the Trust Fund within a week of approval. Signature indicates agreement with the tasks and amounts approved. Any objections/appeals must be submitted via Change Order prior to work proceeding. Scope/cost negotiations do not supersede other regulatory deadlines as described in #1 above. Also, any ePATA that has been signed as 'Confirmed' by both the UST Section and RP is not to be modified without written consent by all signatories. Tasks approved on Directed - CAB Only ePATAs must be performed in accordance with all applicable rules, statutes, and RRD Task Scopes of Work to be reimbursed in full." If you have any questions, please call me at (704) 235- 2182 or email me at Trudy. Beverly@ncdenr.gov or contact Scott Ryals at (919) 707-8168 or Scott.Ryals@ncdenr.gov. Trudy Trudy Beverly, L.G. Hydrogeologist, Division of Waste Management North Carolina Department of Environmental Quality UST Section, Mooresville Regional Office rmrM �G audnr� 704.235.2182 (Office) Trudy. B everlyga,ncdenr. gov Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties. Office Mailing Address: 610 East Center Avenue, Suite 301 Mooresville, NC 28115 Branch's Underground Storage Tanks Website Address: https://deq.nc.gov/about/divisions/waste-management/ust Branch's Above Ground Storage Tanks Website Address: https://deq.nc.gov/about/divisions/waste-management/ust/ast-proeram INTERACTIVE MAPS WITH DWM SITES AND PERMITTED FACILITIES: httDs:Hdeu.ne. aov/about/divisions/waste-manaeement/waste-manaeement-rules-data/waste-manaaement-eis-mans File Review Procedures: https:Hdcq.nc. gov/about/divisions/waste-manaaement/ust/file-review-procedures#mooresville-regional-office ONLINE ACCESS TO UST SECTION DOCUMENTS (Laserfiche): httns://deo.nc. aov/about/divisions/waste-manaeement/laserfiche Document Submittal & UST File Names for Laserfiche Policies: htips:Hfiles.nc. gov/ncdeq/Waste%20Management/D WM/UST/Corrective%2OActionBlectronic%2ODocument%2OSubniittal%2OMemo%2OUpdate.pdf https:Hfiles.nc. gov/ncdeq/Waste%20Management/DViM[UST/Corrective%2OAction/UST%20filc%20names%20for%2OLaserfiche.docx From: Donna Farris [mailto:dfarris@excelengr.com] Sent: Friday, December 13, 2019 11:24 AM To: Beverly, Trudy <trudy.beverly@ncdenr.gov> Cc: Mike Stanforth <mstanforth@excelengr.com> Subject: [External] Servco 00311 Incident 27502 - ePATA Request External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to kort.spam@nc.gov For processing. Please confirm receipt via a return email. Thank you, Donna Farris Excel Civil & Environmental Associates, PLLC 625 Huntsman Court, Gastonia, NC 28054 Ph: 704-853-0800 Fax: 704-853-3949 www.excelenqr.com [excelengr.coml `Please consider the environment before printing this e-mail. CONFIDENTIALITY NOTICE: The information in this e-mail is confidential. It is intended solely for the addressee. Access to this e-mail by anyone else is unauthorized. If you are not the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it, is prohibited and may be unlawful. When addressed to our clients, any opinions or advice contained in this e-mail are subject to the terms and conditions expressed in the governing ECEA client engagement letter.