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LI � <br /> Case Closure Summary Page 2 <br /> Leaking Underground f=uel Storage Tank Program <br /> III Release and Site Characterization Information (continued) <br /> Maximum Documented Contaminant Concentrations--Before and After Cleanup <br /> Contaminant Soil (ppm) <br /> Water (ppm) Contaminant Soil (ppm) Water (ppm) <br /> Before After Before After Before After Before After <br /> TPH (Gas) <1 <1 C050 Ethyibenene <.005 <.005 <.0005 <br /> TPH (Diesel) Xylene .029 <.005 <.001 <br /> Benzene <.005 <.005 <.0005 TBA 4.58 <.05 <.02 <br /> Toluene <.005 <.005 <.0005 MTBE .322 <.005 <.002 <br /> TAME .027 <.005 <.002 <br /> Comments: Soil Before results are from the soil sample collected beneath the UST when it was removed on 1114103. Soil <br /> After and Groundwater Before results are from SB1 on 3128103. No remediation was performed. <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? No <br /> Monitoring/Vapor wells decommissioned: Number Decommissioned: Number retained: <br /> List enforcement actions taken: NOR <br /> List enforcement actions rescinded: <br /> V. Local Agency Representative Data <br /> Name: Margaret Lagorio Title: Supervising REHS <br /> Signature: Date: t� 7 <br /> VI. Central Valley Regio l Water Quality Cbfitrol Board (RB) Notification <br /> Date Submitted to RB: Response Date: <br /> RB Staff:James L.L. Barton Response: <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 />