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t <br /> Case Closure Summary Page 2 <br /> Leaking Underground Fuel Storage Tank Program <br /> III Release and Site Characterization Information (continued) <br /> FContaminant <br /> Documented Contaminant Concentrations --Before and After Cleanup <br /> m Contaminant Sol] (ppm) Water (ppm) <br /> Soil (ppm) Water (PpAft ) Before After Before After <br /> Before After Before After <.005 <br /> 450 1.6 Ethylbenene .041 <br /> Xylene .16 <.005 <br /> TPH(Diesel) 7900 77 TCE <br /> Benzene <.005 <.005 <br /> Toluene <.005 <.005 PCE <br /> MTBE <.05 <.005 <br /> Comments: Soil Before Results are from beneath dispenser 3 on 11/20/00 at 3 feet below grade at the time of the piping <br /> removal. Soil After Results are from the bottom of the excavation of the dispenser 3 area on 12/18/00 at 7.5 feet below <br /> grade. No groundwater investigation performed. Groundwater at 40 feet below grade. 25 cubic yards of contaminated soil <br /> removed and disposed of at a landfill. <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: 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 List enforcement actions rescinded: 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: 4 I I-7 ?} j <br /> VI. Central Valley Regional Water Quality Control Board (RB) Notification <br /> Date Submitted to RB: Response Date: <br /> RB Staff: Marty Hartzell Response: <br /> Title: Associate Engineering Geologist <br /> VII. Additional Comments, Data, etc. <br /> 11 SOIL ONLY <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 />