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Case Closure Summary Page, <br /> Leaking Underground Fuel Storage Tank Program <br /> 111 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) 300 11 2.1 Ethylbenene .44 .230 .024 <br /> TPH(Diesel) NA NA NA Xylene .69 .083 .100 <br /> Benzene <.25 .027 .0046 MTBE <.67 <.005 <.002 <br /> Toluene .66 .005 .0032 <br /> Comments: Soil Before results are from NS-SB4-25.0'collected 7/13/98. There are no Soil After results since no soil <br /> remediation was performed. Water Before results are from MW1 on 9/6/01. Water After results are from MW3 on 6/1/05 <br /> NA= not analyzed <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: None <br /> Should corrective action be reviewed if land use changes?Yes <br /> Monitoring/Vapor wells decommissioned: No Number Decommissioned: 3 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 List enforcement actions rescinded: 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 Vai iey Regional Water Quality Control Board (RB) Notification <br /> Date Submitted to RB: 10/6/05 Response Date: 11/1/05 <br /> RB Staff: James L.L. Barton Response: Concurrence <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 />