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Case Closure Summary Page 2 <br /> Leaking Underground Fuel Storage Tank Program j <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 lkfter <br /> TPH (Gas) <10 <1 <.05 Xylene <.025 <.005 <.0005 <br /> TPH (Diesel) 78.0 <10 <.05 Ethylbenzene <.025 <.005 <.0005 <br /> Benzene <.025 <.005 <.0005 Oil&Grease <10 NA NA <br /> Toluene 0.005 <.005 <.0005 Heavy Metals Pb 11.0 11.0 NA <br /> TBA NA <.25 <.025 MTBE NA' <.01 <.001 <br /> EDB <.02 <.005 <.0005 1,2-DCA <.025 <.005 <.0005 <br /> Comments: Soil Before results are from soil beneath UST's at time of removal 8129189. Soil After and Water After results <br /> are from GeoProbe soil and groundwater grabs collected on 315102. No remediation necessary. <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:NA <br /> Should corrective action be reviewed if land use changes?NA <br /> Monitoring/Vapor wells decommissioned: 0 Number Decommissioned: 0 Number retained: 0 <br /> List enforcement actions taken: Level one. <br /> 1 <br /> List enforcement actions rescinded: <br /> V. Local Agency Representative Data <br /> Name: Donna Heran,REHS Title: Director of Environmental Health Department <br /> Signature: Date: <br /> VI. Central Valley Regional Water Quality Control Board (RB) Notification <br /> Date Submitted to RB: 5/13/2002 Response Date: 5/20/2002 <br /> RB Staff: Marty Hartzell Response: Concurrence <br /> Title:Assoc Eng Geologist <br /> VII. Additional Comments, Data, etc. <br /> 1§6-7il--o-nlyat time of UST removal in 1989 and not confirmed wl additional assessment including groundwater sampling. ) <br /> CVRWQCB Concurrence Letter dated 5120102 received by EHD on 5123102. a <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 />