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V <br /> Case Closure Summary Page 2 <br /> Leaking Underground Fuel Storage Tank Program <br /> Iil 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) 625 <1 <.05 Ethylbenene 373.5 <.005 <.0005 <br /> TPH(Diesel) NA NA NA Xylene 6.5 C005 <.0005 <br /> Benzene <.005 <.005 <.0005 <br /> Toluene 6.95 <.005 <.0005 MTBE 17.9 <.005 <.001 <br /> Comments: All levels in ppm. Soil Before levels from UST removal samples on 10113/99. Soil After levels are from soil <br /> boring samples on 6/21-22104. Groundwater Before levels are from soil boring grab water samples on 6/21-22/04. No <br /> 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? Yes <br /> MonitoringNapor wells decommissioned: NA Number Decommissioned: 0 Number retained: 0 <br /> List enforcement actions taken: NOR <br /> List enforcement actions rescinded: None <br /> V. Local Agency Representative Data <br /> Name: Margaret Lagorio Title: Supervising REHS <br /> Signature: Date: <br /> Vi. Central Valley Regional Water Quality Control Board (RB) Notification <br /> Date Submitted to RB: Response Date: <br /> RB Staff: James Barton Response: <br /> Title: En ineering 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 />