Laserfiche WebLink
---- <br /> Case Closure Summary <br /> Leaking Underground Fuel Storage Tank Program <br /> 111. Release and Site Characterization Information continued <br /> Maximum Documented Contaminant Concentrations --Before and After Cleanup <br /> m f <br /> ntaminant Soil (ppm) Water (PPm) <br /> Contaminant Soil (ppm) Water (ppm). Before After Before After <br /> Before After Before After Nq 0 030 <0.0005 <br /> TPH(Gas) 1,600 NA '150 <0.050ylbenzene 34 <0.0006 <br /> 0.18 NA enes 190 NA 0.15 <br /> TPH(Diesel) 7,900 NA <0.0005BE 27 NA 150 <0.001 <br /> Benzene 15 NA 2'D NA <0.0005 NA <br /> Toluene 95 NA 0.24 ; <0:0005 -DCA NA <br /> Lead NA NA NA NA <br /> r TPH-g, toluene, ethylbenzene, and xylenes are from sample T1 @ <br /> Comments: The `Soil Before' concentrations fo15 <br /> et on 11127195, MTBE from CPT-1 @ 35 feet on 06111103, and TRH- <br /> feet on 03/29195, benzene from B2-S3 @ 18.5 fed from <br /> stockpile composite SP91SP101SP11 on 05106199. `Soil After' concentrations were not collected. <br /> The `Groundwater Before' concentrations for TPH-g, MTBE, and 1,2-DCA are from MW-1 on 06106108, <br /> TPH-d from CPT- <br /> 5-110' on 06113103, benzene from MW-1 on 08114198, toluene and ethylbenzene from CPT-1-108' on 06111103,xylenes from <br /> MW-3 on 04127199. The `Groundwater After' concentrations are taken fram MW=1 on.03110111. NA—not anal zed <br /> IV. Closure <br /> FDoescom�p:leted,corrective <br /> ted corrective action protect existing beneficial uses per the Regional Board Basin Plan? Yes <br /> action protect potential beneficial uses per the Regional Board Basin Plan? Yesive 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 /> MonitoringlVaportyells decommissioned: No'Number Decommissioned: 0 Number retained: 4 MWs, 5 air.sparging wells, <br /> r <br /> and 3 SVE wells <br /> List enforcement actions taken: NOR <br />€. List enforcement actions rescinded: None <br /> i <br /> V. Local Agency Representative Data <br /> Name: Adrienne Ellsaesser, REHS Title: Acting Program Coordinator <br />' Signature: ' / Date: <br /> VI Central Valley Regional Water Quality Control Board RB Notification <br /> Date Submitted to RB: Response Date: <br /> RB Staff: James L.L. Barton Response: <br /> Title: Associate Engineering Geologist <br /> VII. Additional Comments, Data, etc. <br /> SVE/IAS remediation took place between April 2008 and December 2010. <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 /> f <br />