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Case Closure Summary Par-'"72 <br /> Leaking Underground Fuel Storage Tan4jigram <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) 2,000. 4.4 0.770 0.250 Etbylbenzene 7.9 <0.01 .0096 .0018 <br /> TPH (Diesel) <50 <50 NIA NIA Xylene 140 <0.02 0.0021 0.0096 <br /> Benzene <0.5 <0.01 0.0037 0.0029 TCE NIA u <br /> Toluene 1.1 0.21 0.0086 0.001 PCE NIA <br /> MTBE NIA <br /> Comments: A SITE ASSESSMENT WAS PERFORMED AND MWS INSTALLED. NO HIGH CONCENTRATION OF <br /> GASOLINE OR DIESEL FOUND IN SOIL BUT, GROUNDWATER HAS BEEN IMPACTED WITH LOW GASOLINE <br /> CONCENTRATIONS. <br /> 1 <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 /> 1 <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? NO <br /> MonitoringNapor wells decommissioned: NO Number Decommissioned: 0 Number retained: 3 <br /> List enforcement actions taken:. NOR <br /> List enforcement actions rescinded: k <br /> 3 <br /> V. Local Agency Representative Data 1 <br /> Name: MARGARET LAGORIO Title:SUPERVISING REHSISiTE MITIGATION-LOP UNIT <br /> Signature: Date: �- <br /> VI. Central Valley Regional Water Quality Control Board (RB) Notification <br /> Date Submitted to RB: Response Date: <br /> RB Staff: PAT ANDERSON Response: <br /> Title: HYDROGEOLOGIST <br /> I <br /> VII. Additional Comments, Data, etc. J <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 />