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L <br /> Leaking Underground Fuel Storage 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) Contaminant Soil (ppm) Water {ppm) <br /> Before After Before After Before After Before After <br /> TPH (Gas) 7400 7.3 0.195 Ethyl-benzene 38 2.0 0.00315 <br /> TPH (Diesel) 480 2.5 0.113 Xylene 170 0.290 .000899 <br /> Benzene 2.2 0.650 0.0017 <br /> Toluene 21 0.032 .000597 <br /> MtBE 10 .017 X0.002 <br /> Comments: NOTE: GROUNDWATER RESULTS IN PARTS PER MILLIONI NO REMEDIATION CONDUCTED. <br /> "Before" soil concentrations from hottest of any boring associated with site. "Before" groundwater concentrations <br /> from first three monitoring wells in early phases of site investigation. "After" groundwater concentrations from <br /> latest and most recent groundwater sam lin event of 03-21-01. NO SOIL "AFTER" data. no confirmation borings) <br /> IV. Closure <br /> Does completed corrective action protect existing beneficial uses per the Regional Board Basin Plan? n/a <br /> Does completed corrective action protect potential beneficial uses per the Regional Board Basin Plan? n/a <br /> Does corrective action protect public health for current land use? No corrective action conducted <br /> Site management requirements: none <br /> Should corrective action be reviewed if land use changes? Not necessary <br /> Have the Monitoring/Vapor wells been decommissioned? Not yet Number Decommissioned: 0 Number retained: 8 <br /> List enforcement actions taken: NOR, 7/7/94 <br /> List enforcement actions rescinded: none <br /> V. Local Agency Representative Data <br /> Name: Donna Heran 1 Margaret Lagorio Title: Director of Envn Health 1 LOP Supervisor <br /> Signature: Date: -7 3 <br /> VI. Central Valley Regional Water Quality Control Board (RB) Notification <br /> Date Submitted to RB: Response Date: <br /> RB Staff: Marty Hartzell Response: <br /> Title: Engineering Geologist <br /> VN. Additional Comments, Data,etc. <br /> None. <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 /> M 1/5/01 <br />