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Case Closure Summary Page 2 <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) 820 77 10 <.05 Ethylbenene 5.4 <.62 <.0025'„ <.0005 <br /> TPH(Diesel) <1 NA NA NA Xylene 7.6 <.62 <.00251 <.0005 <br /> Benzene <.5 <.62 <.0025 <.0005 <br /> Toluene .65 <.62 <.0025 <.0005 MTBE <.005 <.5 c005 <br /> Comments: Soil Before results from sidewall sample from UST 1 area at time of removal on 10128193. Soil After results <br /> from B2 at 10 feet on 3113100. Water Before results from grab water sample from B3 on 3113100. Water After results are <br /> from MW3 on 3129101. <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 /> I <br /> Site management requirements: None j <br /> Should corrective action be reviewed if land use changes?Yes <br /> Monitoring/Vapor wells decommissioned: No Number Decommissioned:.1 Number retained: 0 <br /> List enforcement actions taken: NOR <br /> List enforcement actions rescinded: <br /> V. Local Agency Representative Data <br /> Name: Donna Heran Title: ?Director of Environmental Health <br /> Signature: Date: <br /> VI. Central Valley Regional Water Quality Control Board (RB) Notification <br /> Date Submitted to RB: 7120101 Response Date: 8124101 <br /> RB Staff: Marty Hartzell Response` Concurrence l <br /> Title:Associate Engineering Geologist <br /> VII. Additional Comments, Data, etc. <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 /> l <br />