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C) n <br /> Case Closure Summary Page'2 <br /> Leaking Underground Fuel S orage Tank Program <br /> III Release and Site Characterization Information (continued) <br /> Maximum Documented Contaminant Concentrations --Before and After Cleanup <br /> Contaminant Soil (ppm) Water (ppm) Con aminant Soil (ppm) Water (ppm) <br /> Before After Before After Before After Before After <br /> TPH (Gas) <1.0 NA <.05 <0.05 Xyle a <.005 NA <.0005 <.0005 <br /> TPH (Diesel) 12 NA .063 <.05 Eth (benzene <0.005 NA <.0005 <.0005 <br /> Benzene <0.005 NA 00005 <.0005 Oil &Grease NA NA NA NA <br /> Toluene 1<0.005 1 NA 1.00083 1<.0005 IMTEE 1<:005 NA 10.410 10.0014 <br /> Comments: The soil before concentrations are from MW-1 at 30 fe t bgs. There aren't any soil after concentrations since <br /> no soil confirmation borings were completed. The ground water befc re concentrations are from samples from MW-1 on <br /> 12/17/03 which is located south and down-gradient of the existing U11 Ts. The ground water after concentrations are from <br /> samples from MW-1 on 11120108. <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? Ye <br /> Site management requirements: None <br /> Should corrective action be reviewed if land use changes?Yes <br /> MonitoringNapor wells installed: Yes Number Decommissioned: 0 Number retained: 3 <br /> List enforcement actions taken: NOR sent to RP. <br /> List enforcement actions rescinded: NA <br /> V. Local Agency Representative Data <br /> Name: Margaret Lagorio Titl : Program Coordinator <br /> Signature: Date: 4 r 4 p <br /> VI. Central Valley Regional Water Quality Control Board (RB) Notification <br /> Date Submitted to RB: Response Date: <br /> RB Staff: J. Barton Response: <br /> Title: Eng. Geologist <br /> Vil. Additional Comments, Data, etc. <br /> Fff <br /> CASE 2 for this address. <br /> This document and the related CASE CLOSURE LETTER, Shall be retained by the lead agency as part of the official <br /> site file. <br />