Laserfiche WebLink
v Case Closure Summary <br /> Leaking Underground Fuel Storage Tank Program <br /> Harry's Auto <br /> 2662 North Wilson Way, Stockton, CA <br /> III. Release and Site Characterization Information continued <br /> Maximum Documented Contaminant Concentrations --Before and After Cleanup <br /> Contaminant Soil (ppm) Water (ppm) Contaminant Soil (ppm) Water (ppm) <br /> Before After Before After Before After Before After <br /> TPH (Gas) 15,000 NA 280 10 Xylenes 990 NA 44 0.700 <br /> TPH(Diesel) NA NA NA NA MTBE <0.50 NA 0.240 <0.001 <br /> Benzene 72 NA 30 0.023 1,2-DCA 0.016 NA 3.1 0.0043 <br /> Toluene 720 NA 34 0.140 EDB <0.00002 NA 0.63 <0.0005 <br /> Ethylbenzene 650 NA 11 0.052 Lead 70 NA NA NA <br /> Comments: The `Soil Before' concentrations for TPH (gas), benzene, toluene, and xylenes are from sample VEW1-35 @ <br /> 35 feet on 10/27/2008, ethylbenzene from VEW1-50 @ 50 feet on 10/27/2008, MTBE from SBI-45 @ 45 feet on <br /> 02/22/2000, 1,2-DCA from VEW6-50 @ 50 feet on 04/20/2011, EDB from Southeast#1 @ 11.5 feet on 04/12/1989, and <br /> lead from Northwest#6 at 9 feet on 04/12/1989. `Soil After' concentrations were not collected. The `Groundwater <br /> Before'concentrations for TPH (gas) are from MW-1 on 06/12/2001, benzene from MW-1 on 04/15/2011, toluene, <br /> ethylbenzene, and xylenes from MW-1 on 03/02/2000, MTBE from MWA 10/18/2010, 1,2-DCA from MW-1 on 11/30/2011, <br /> and EDB from MWA on 02/07/2001. `Groundwater After' concentrations for TPH (gas), benzene, toluene, ethylbenzene, <br /> xylenes, MTBE and EDB are from MWA on 11/06/2013 and 1,2-DCA from MW-4 on 11/06/2013. NA–not anal zed <br /> IV. Closure <br /> Does completed corrective action protect existing beneficial uses per the Regional Board Basin Plan? Yes <br /> Does completed corrective action protect potential beneficial uses per the Regional Board Basin Plan? Yes <br /> Does corrective action protect public health for current land use? Yes <br /> Site management requirements: None <br /> Should corrective action be reviewed if land use changes? Yes <br /> Monitoring/Vapor wells decommissioned: Yes Number Decommissioned: 28 Number retained: 0 <br /> List enforcement actions taken: NOR on 03/25/1997 <br /> List enforcement actions rescinded: None <br /> V. Local Agency Representative Data <br /> Name: Linda Turkatte, REHS Title: Director <br /> Signature: —� . /► 0 Date: 2/25/2015 <br /> VI Central Valley Regional Water Quality Control Board RB Notification <br /> Date Submitted to RB: 7/18/2014 Response Date: 8/7/2014 <br /> RB Staff: Cori Condon Response: Concurrence <br /> Title: Senior Engineering Geologist <br /> VII. Additional Comments, Data, etc. <br /> E <br /> remediation of soil and groundwater by soil vapor extraction and in-situ air sparging was conducted during a pilot test <br /> 1 and continued until early 2014. <br /> This document and the related CASE CLOSURE LETTER shall be retained by the lead agency as part of the official site file. <br /> Page 2 <br />