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e <br /> tiy/ �V <br /> 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) <1 <1 <.050 Ethylbenene <.005 <.005 <.0005 <br /> TPH(Diesel) NA NA NA Xylene <.005 <.005 <.0005 <br /> Benzene <.005 <.005 <.0005 MTBE .090 <.005 <.0005 <br /> Toluene <.005 <.005 <.0005 <br /> Comments: Soil Before results are from the dispenser upgrade sampling on 11/12/02. Soil After results are from the <br /> geoprobe samples collected on 5/3/04. Water Before samples are from the geoprobe samples collected on 5/3/04. <br /> No cleanup was required. <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: NA 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 List enforcement actions rescinded: 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: I of ai 0 y <br /> VI. Central Valley Regional Water Quality Control Board (RB) Notification <br /> Date Submitted to RB: Response Date: <br /> RB Staff:James L.L. Barton Response: <br /> Title:Associate En ineerin 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 /> r <br />