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Home My WebLink AboutFA-750_13436_CA_MRP_20231212_LSA1.0 CONSULTECH ENVIRONMENTAL, LLC. 2021 Energy Dr * Apex, NC 27502 919-234-4238 * FAX 919-234-4239 December 12, 2023 North Carolina Department of Environmental Quality Division of Waste Management, UST Section 1628 Mail Service Center Raleigh, North Carolina 27699-1628 Attention: Mr. Scott Ryals Reference:Groundwater Monitoring Report Former Tolarsville 76 5633 Tolarsville Road St Pauls, Robeson County, NC NCDEQ Incident No: 13436 Dear Mr. Ryals: Please find attached a groundwater monitoring report for the above referenced facility. Please contact the undersigned if you have any questions or comments regarding the report. Respectively, Consultech Environmental, LLC. John Liebig Project Manager 2.0 CONSULTECH ENVIRONMENTAL, LLC. 2021 Energy Dr * Apex, NC 27502 919-234-4238 * FAX 919-234-4239 Prepared by: Consultech Environmental, LLC. 2021 Energy Drive Apex, NC 27502 December 2023 GROUNDWATER MONITORING REPORT Former Tolarsville 76 5633 Tolarsville Road St Pauls, Robeson County, NC NCDEQ Incident No: 13436 i SITE INFORMATION 1. Site Identification Former Tolarsville 76 5633 Tolarsville Road St Pauls, Robeson County, NC Date of Report:December 2023 Facility I.D.:0-022782 UST Incident No.: 13436 Site Risk:Low Land Use Classification: Residential Site Name (NCDEQ Incident Name): Former Tolarsville 76 Site Street Address:5633 Tolarsville Road City/Town:St Pauls Zip Code:28384 County:Robeson Description of Geographical Data Point:Center of Lot Location Method:Google Earth Latitude (decimal degrees):N 34.760991o Longitude (decimal degrees):W -78.871708o 2. Contact Information UST Owner/Operator: Address: Sampson-Bladen Oil Company P.O. Box 1304-367 Clinton, NC 28337 Tel:910-865-3197 Property Owner:Rosalie Wright 5633 Tolarsville Road St Pauls, NC 28384 Consultant/Contractor:Consultech Environmental, LLC. Address: Tel: 2021 Energy Drive Apex, NC 27502 (919) 234-4238 Analytical Laboratory:Eurofins Test America. Cert # 314 Address: Tel: 5102 LaRoche Avenue Savannah, GA 31404 (813) 690-3563 3. Information about Release Date Discovered:09/27/1994 Estimated Quantity of Release:Unknown Cause of Release:Gasoline UST System Source of Release (Dispenser/Piping/UST):UST System Size and Contents of UST System(s) from which the release occurred: Two 4,000-gal gasoline, one 2,000-gallon gasoline 4. 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ucorngf/ Ycvgt ycu fgvgevgf kp vjg ygnn cv c fgrvj qh cdqwv 21 hggv diu/ Ugxgtcn XQEu cpf E.6 vq E.9 cnkrjcvkeu ygtg fgvgevgf kp c uqkn ucorng htqo 6 hggv cpf E.6 vq E.9 cnkrjcvkeu ygtg fgvgevgf kp vjg uqkn ucorng htqo 21 hggv diu kp dqtkpi OY.2T cv eqpegpvtcvkqpu cdqxg vjg Uqkn vq Ycvgt OUEEu/ Pq eqpuvkvwgpvu ygtg fgvgevgf kp vjg uqkn ucorngu cv eqpegpvtcvkqpu cdqxg vjg Tgukfgpvkcn OUEEu/ iii Ugxgtcn eqpuvkvwgpvu )Pcrjvjcngpg-1,2,4-Trimethylbenzene, Xylenes, C5-C8 Aliphatics, C9-C10 Aromatics, and Lead* ygtg fgvgevgf kp vjg itqwpfycvgt kp ygnn OY.2T cv eqpegpvtcvkqpu cdqxg vjg PECE 3N uvcpfctfu kp Pqxgodgt 3134/ Pq eqpuvkvwgpvu ygtg fgvgevgf kp vjg itqwpfycvgt ucorng cv eqpegpvtcvkqpu cdqxg vjg IENu/ Ycvgt uwrrn{ ygnnu ygtg pqv kfgpvkhkgf kp vjg ctgc cpf yg wpfgtuvcpf vjcv vjg ukvg cpf uwttqwpfkpi rtqrgtvkgu ctg eqppgevgf vq vjg owpkekrcn ycvgt u{uvgo/ Dcugf qp fcvc rtgugpvgf kp vjku tgrqtv- Eqpuwnvgej tgeqoogpfu c Pq Hwtvjgt Cevkqp uvcvwu hqt vjku kpekfgpv chvgt rtgrctcvkqp cpf uwdokvvcn qh c Pqvkeg qh Tgukfwcn Rgvtqngwo 0 fggf tguvtkevkqp rncegf qp vjg ukvg tguvtkevkpi hwvwtg itqwpfycvgt wug/ iv TABLE OF CONTENTS SITE INFORMATION.......................................................................................................I 1.0 EXECUTIVE SUMMARY......................................................................................II TABLE OF CONTENTS.................................................................................................IV 2.0 SITE HISTORY AND CHARACTERIZATION......................................................5 3.0 CURRENT ASSESSMENT ACTIVITIES..............................................................6 3.1 SOIL SAMPLING AND TESTING ....................................................................................... 6 3.2 GROUNDWATER SAMPLING AND TESTING ...................................................................... 6 4.0 GROUNDWATER SAMPLING RESULTS...........................................................7 4.1 GROUNDWATER FLOW ................................................................................................. 7 4.2 LABORATORY ANALYSIS RESULTS................................................................................ 7 5.0 CONCLUSIONS AND RECOMMENDATIONS....................................................7 TABLES Table 1 Monitoring Well Construction Information and Groundwater Elevation Data Table 2 Current and Historical Groundwater Contaminant Concentrations Table 3 Historical Soil Contaminant Concentrations FIGURES Figure 1 Site Location Map Figure 2 Site Map LIST OF APPENDICES APPENDIX A Laboratory Analytical Reports APPENDIX B Well Construction Record 5 2.0 SITE HISTORY AND CHARACTERIZATION Vjg uwdlgev ukvg ku nqecvgf cv 6744 Vqnctuxknng Tqcf kp Uv Rcwnu- Tqdguqp Eqwpv{- Pqtvj Ectqnkpc/ Vjg ukvg ku ewttgpvn{ qypgf d{ Tqucnkg Ytkijv cpf ku c tgukfgpvkcn rtqrgtv{/ Vjg rtqrgtv{ hqtogtn{ eqpvckpgf vjg Vc{nqtuxknng 87 eqpxgpkgpeg uvqtg ykvj hwgn fkurgpukpi qrgtcvkqpu/ 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dgp|gpg- vqnwgpg- gvj{n dgp|gpg- cpf z{ngpgu ygtg fgvgevgf kp vjg itqwpfycvgt kp vjg ygnn cv eqpegpvtcvkqpu qh 26 oketqitcou rgt nkvgt )wi0N*- 311 wi0N- 245 wi0N- 841 wi0N- tgurgevkxgn{/ Qp Lwpg ;- 2;;6- GJE tgucorngf ygnn OY.2 cpf vqnwgpg- gvj{ndgp|gpg- cpf z{ngpgu ygtg fgvgevgf kp vjg itqwpfycvgt cv eqpegpvtcvkqpu qh ;93 wi0N- 976 wi0N- cpf 5351 wi0N/ Qp Lcpwct{ 7- 2;;7- GJE rgtuqppgn tgucorngf ygnn OY.2/ Vjgkt tguwnvu kpfkecvgf ngxgnu qh Dgp|gpg- Vqnwgpg- Gvj{ndgp|gpg- cpf Z{ngpgu cv eqpegpvtcvkqpu qh 2;7 wi0N- 789 wi0N- ;14 wi0N- cpf 5647 wi0N/ Vjgkt tgeqoogpfcvkqp chvgt vjku gxgpv ycu vq kpuvcnn vyq oqtg oqpkvqtkpi ygnnu vq fgvgtokpg vjg fktgevkqp qh itqwpfycvgt hnqy cpf vjg gzvgpv qh vjg eqpvcokpcpv rnwog/ Ceeqtfkpi vq vjg ncuv tgrqtv- vjg kpuvcnncvkqp qh vjg cffkvkqpcn ygnnu ycu crrtqxgf jqygxgt kv crrgctu vjcv vjku cevkxkv{ ycu pgxgt rgthqtogf/ Pq hwtvjgt tgogfkcn cevkqp jcu vcmgp rnceg cv vjku ukvg cpf pq hwtvjgt tgrqtvu ygtg uwdokvvgf/ Qp Ugrvgodgt 7- 3134- Eqpuwnvgej rgtuqppgn oqdknk|gf hqt c itqwpfycvgt ucornkpi gxgpv cv vjg Vqnctuxknng 87 ukvg/ Chvgt cttkxkpi qpukvg cpf urgcmkpi ykvj vjg qypgt- kv ycu fkueqxgtgf vjcv fwtkpi vjg kpuvcnncvkqp qh uqog pgy hkdgtqrvke nkpgu cnqpi Vqnctuxknng Tqcf- oqpkvqtkpi ygnn OY.2 ycu fguvtq{gf/ Eqpuwnvgej rgtuqppgn kpuvcnngf cpf ucorngf c pgy ygnn )ugg fkuewuukqp dgnqy*/ 6 Vjg oqpkvqtkpi ygnn nqecvkqpu ctg ujqyp qp Hkiwtg 3/ Jkuvqtkecn uqkn eqpvcokpcpv eqpegpvtcvkqpu ctg uwooctk|gf kp Vcdng 4- yjkng jkuvqtkecn cpf ewttgpv itqwpfycvgt eqpvcokpcpv eqpegpvtcvkqpu ctg eqpvckpgf kp Vcdng 3/ C uwooct{ qh ygnn eqpuvtwevkqp kphqtocvkqp cpf ycvgt ngxgnu ku uwooctk|gf kp Vcdng 2/ 3.0 CURRENT ASSESSMENT ACTIVITIES On November 9, 2023, South Atlantic Environmental Drilling and Construction Company (SAEDACCO) drilled one soil boring and installed a replacement monitoring well (MW-1R) near the former tank basin. The soil boring location is shown on Figure 2. The boring was drilled to 20 feet below the ground surface (bgs) using a Geoprobe. Water was encountered in the boring at a depth of approximately 15 feet bgs at the time of drilling. Soil samples werecollected from MW-1R at five-foot intervals (5, 10, and 15 feet below the ground surface - bgs). The soil samples were placed into appropriate laboratory-supplied containers, the samples were then placed on ice, and shipped under chain-of-custody to Eurofins Environment Testing in Pensacola, FL for analysis for volatile organic compounds (VOCs) by EPA Method 8260, extractable petroleum hydrocarbons (EPH), and volatile petroleum hydrocarbons (VPH) by the MADEP method. Low concentrations of ten VOCs and several VPH and EPH fractions were detected in the soil sample from 5 feet bgs. VPH and EPH fractions were detected in the sample from 10 feet bgs, and one VOC (1,2,4-trimethylbenzene) was detected in the sample from 15 feet. Three compounds (Naphthalene, 4-Isopropyltoluene, and C5-C8 Aliphatics) were detected in the sample from five feet bgs at concentrations (0.261, 0.198, and 120 mg/kg) exceeding their Soil to Water Maximum Soil Contaminant Concentrations (MSCCs). C5-C8 Aliphatics were detected in the sample from 10 feet at a concentration (331 mg/kg) exceeding the soil to water MSCC. No constituents were detected in the soil sample from 15 feet bgs at concentrations above the MSCCs. Soil analytical data is summarized in Table 3;the soil laboratory analytical report is presented in Appendix A. On November 9, 2023 SAEDACCO installed a monitoring well in the boring to a depth of 20 feet; the well included a screened interval from 10 to 20 feet bgs. The well construction record is presented in Appendix B. Water was encountered at a depth of 10.6 feet at the time of sampling. A water sample was collected from the well on November 9, 2023 using a new polyethylene bailer. The sample was placed into appropriate laboratory-supplied containers, the samples were then placed on ice, and shipped under chain-of-custody to Eurofins Environment Testing in Pensacola, FL for analysis for VOCs by EPA Method 6200, VPH by the MADEP method, and Lead by the SW 846 6010D Method. 7 Several VOCs (1,2,4-Trimethylbenzene, 1,3,5-Trimethylbenzene, Ethylbenzene, Isopropylbenzene, Naphthalene, n-Butylbenzene, N-Propylbenzene, sec-Butylbenzene, Toluene, Xylenes), two VPH fractions (C5-C8 Aliphatics, C9-C10 Aromatics), and Lead were detected in the groundwater sample from well MW-1R at concentrations ranging from 6.09 to 4,450 micrograms per liter - ug/L). Concentrations of 1,2,4-Trimethylbenzene, Naphthalene, Xylenes, C5-C8 Aliphatics, C9-C10 Aromatics, and Lead were detected in the groundwater sample from well MW-1R at concentrations above the NCAC 2L groundwater quality standards. None of the analyzed parameters were detected in the groundwater in well MW-1R at concentrations above the NCDEQ Gross Contaminant Levels (GCLs). Groundwater analytical data is summarized in Table 2; the groundwater laboratory analytical report is contained in Appendix A. 4.0 GROUNDWATER SAMPLING RESULTS Itqwpfycvgt hnqy ecppqv dg fgvgtokpgf fwg vq vjg rtgugpeg qh qpn{ qpg oqpkvqtkpi ygnn- jqygxgt- dcugf qp vqrqitcrj{ yg gzrgev vjg itqwpfycvgt vq hnqy vq vjg gcuv vqyctfu vjg pgctd{ etggm 0 uycor/ OY.2T jcf okpqt fgvgevkqpu qh 1,3,5-Trimethylbenzene, Ethylbenzene, Isopropylbenzene, n- Butylbenzene, N-Propylbenzene, sec-Butylbenzene, and Toluene/ OY.2T cnuq jcf fgvgevkqpu qh 1,2,4-Trimethylbenzene, Naphthalene, Xylenes, C5-C8 Aliphatics, C9-C10 Aromatics, and Lead )675 wi0N- 221 wi0N- 926 wi0N- 5331 wi0N- 5561 wi0N- cpf 38/7 wi0N* cdqxg vjgkt tgurgevkxg PECE 3N uvcpfctfu/ Pq eqpvcokpcpv eqpegpvtcvkqpu gzeggfgf vjgkt tgurgevkxg IENu/ Ewttgpv cpf jkuvqtkecn itqwpfycvgt cpcn{vkecn tguwnvu ctg eqpvckpgf kp Vcdng 3/Vjg ncdqtcvqt{ tgrqtv ku kpenwfgf kp Crrgpfkz C/ 5.0 CONCLUSIONS AND RECOMMENDATIONS Dcugf qp kphqtocvkqp kp vjku tgrqtv- 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Ycvgt OUEEu/ Pq eqpuvkvwgpvu ygtg fgvgevgf kp vjg uqkn ucorngu cv eqpegpvtcvkqpu cdqxg vjg Tgukfgpvkcn OUEEu/ "Ugxgtcn eqpuvkvwgpvu )Pcrjvjcngpg-1,2,4-Trimethylbenzene, Xylenes, C5-C8 Aliphatics, C9-C10 Aromatics, and Lead* ygtg fgvgevgf kp vjg itqwpfycvgt kp ygnn OY.2T cv eqpegpvtcvkqpu cdqxg vjg PECE 3N uvcpfctfu kp Pqxgodgt 3134/ Pq eqpuvkvwgpvu ygtg fgvgevgf kp vjg itqwpfycvgt ucorng cv eqpegpvtcvkqpu cdqxg vjg IENu/ "Ycvgt uwrrn{ ygnnu ygtg pqv kfgpvkhkgf kp vjg ctgc cpf yg wpfgtuvcpf vjcv vjg ukvg cpf uwttqwpfkpi rtqrgtvkgu ctg eqppgevgf vq vjg owpkekrcn ycvgt u{uvgo/ Dcugf qp fcvc rtgugpvgf kp vjku tgrqtv- Eqpuwnvgej tgeqoogpfu c Pq Hwtvjgt Cevkqp uvcvwu hqt vjku kpekfgpv ykvj c Pqvkeg qh Tgukfwcn Rgvtqngwo vq vjg wug qh itqwpfycvgt kp vjg ctgc/ 9 TABLES EKQQ944HXK9SWXHQQKJ#RR’JJ’]]]]$EKQQ4OHRKXKV#OS$3HWOSM4KUXN#LX27B$BIVKKSKJ9SXKVZHQ#\XT]LKKX27B$CTXHQ4KUXN#LX27B$CTUTL3HWOSM5QKZHXOTS#LX$4HXKEHXKV<KZKQ=KHWYVKJ#RR’JJ’]]]]$4KUXNXTEHXKVLVTRCTUTL3HWOSM#LX$>1@<CNOIPSKWW#LX$AKQHXOZK7VTYSJ[HXKV5QKZHXOTS#LX$=E%))’.’)00-*--%)-)-%%/’*.’)0000&+,(%%=E%)A))’0’*(*+*)()(%*(*(%%))’0’*(*+)(&.(%%EKQQ4HXHEKQQ3TSWXVYIXOTS4KXHOQW9>?GB%3JIFMJKFID<BGG+JILMKN@MFJI1ICJKH>MFJI>IA/KJNIAP>MBK-GBO>MFJI,>M>.JKHBK9JG>KLOFGGB)(’(&&9JG>KLOFGGB7J>A#8M$6>NGL#7J?BLJI+JNIMQ#4JKME+>KJGFI> CJSVRN =ULJYQUT6JYN 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3SRWQKZRMYEVS[OUO)%+%-&EXRTOZQ]SLOU^OUO<YVWXVW]SLOU^OUO51&5)( 3XVTKZRMY<YVWXVW]SLOU^OUOU&4[Z]SLOU^OUOH]SOUOY,&<YVWXVW]SZVS[OUO51&5)* 3SRWQKZRMYYOM&4[Z]SLOU^OUO5-&50 3SRWQKZRMYDVRSZVGKZOX?D55COYRNOUZRKSDVRS5SOKU[W>O\OSYEB;&9CA3MZRVU>O\OSEB;&6CA3MZRVU>O\OS3UKS]ZRMKS?OZQVN&2EKLSO+;RYZVXRMKSDVRS5VUZKTRUKUZ5VUMOUZXKZRVUY8VXTOXEVSKXY\RSSO/.-.++EVSKXY\RSSOCVKN%DZ’BK[SY%CVLOYVU5V[UZ]%@VXZQ5KXVSRUKEB;&9CA5))&5** 3XVTKZRMY5VUZKTRUKUZVP5VUMOXU&2)%*%,&EXRTOZQ]SLOU^OUOEB;&6CAB&<YVWXVW]SZVS[OUOH]SOUOY #EVZKS$4OU^OUOU&BXVW]SLOU^OUO7ZQ]SLOU^OUO@KWQZQKSOUO5)1&5+. 3SRWQKZRMY 10 FIGURES APPENDIX A Laboratory Analytical Reports APPENDIX B Well Construction Record Brian Ewing 4240-B SAEDACCO X 11-9-23 MW-1R Tolarsville 76 5633 Tolarsville Rd., St. Pauls, NC, 28384 Bladen X X 1 20 8.25" BORED 0 10 2 SCH-40 PVC 10 20 2 .010 SCH-40 PVC 0 6 PORTLAND POURED 8 20 FILTER SAND # 2 0 5 FILL SILT AND SAND 5 15 MOIST TO WET SILT/ CLAY 15 20 SILT CLAY MOIST TO WET BENTONITE SEAL 6 TO 8' 11/17/2023