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Case Closure Summary Page 2 <br /> Leaking Underground Fuel Storage Tanrogram <br /> 111 Release and Site Characterization Information.(continued) <br /> Maximum Documented Contaminant Concentrations --Before and After Cleanup <br /> Contaminant Soil (ppm) Water (ppm) Contaminant SoilWater (ppm <br /> Before After Before After Before Afte} Before After? <br /> TPH (Gas) <2.5 NO NO Xylene. .055 ND NO <br /> TPH (Diesel) Ethylbenzene .010 NO NO <br /> Benzene <.005 NO NO Oil &Grease <br /> Toluene .036 NO NO Heavy Metals <br /> MTBE .005 <br /> u <br /> Comments: GEOPROBE INVESTIGATION OF SOIL AND GROUNDWATER AFTER TANK REMOVAL DID NOT <br /> EVIDENCE SIGNIFICANT CONTAMINATION. <br /> IV. Closure <br /> Does completed corrective action protect existing beneficial uses per the Regional Board Basin Pian? 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? NO <br /> Monitoring/Vapor wells decommissioned: Number Decommissioned: Number retained: <br /> List enforcement actions taken:. NOR <br /> List enforcement actions rescinded: <br /> i <br /> V. Local Agency Representative Data <br /> Name: DONNA HERAN DIRECTOR OF ENVIRONMENTAL HEALTH <br /> Signature: Date: —/ ? <br /> V1. Central Valley Regional Water Quality Control Board (RB) Notification <br /> Date Submitted to RB: 01/14/98 Response Date: 01/22/98 <br /> RB Staff. PAT ANDERSON Response: CONCURRENCE <br /> Title: HYDROGEOLOGIST <br /> VII. Additional Comments, Data, etc. <br /> LL: <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 />