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4 Case Closure Summary Page 2 <br /> Leaking Underground Fuel Storage Tank Program <br /> III Release and Site Characterization Information (continued) <br /> i' <br /> Maximum Documented Contaminant Concentrations -- Before and After Cleanup <br /> m Water {ppm) Contaminant <br /> Soil (ppm) Water {ppm) <br /> Fnant Soil (Ppm) Before After Before After <br /> Before After Before After <br /> s <1 Ethyibenene <.005esel) ::: 1300 <5 Xylene <.005 <br /> Benzene <.005 TCE <br /> Toluene <.005 PCE <br /> MTBE <.01 <br /> Comments: Soil Before from soil sample beneath the USTs at the time of their removal. Soil After from soil samples <br /> collected from a soil borings. The soil boring samples were only analyzed for.TPH-Diesel since that was the only <br /> contaminant detected at the time the USTs were removed. No remediation was required. <br /> I <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 /> MonitoringNapor wells decommissioned: Number Decommissioned: Number retained: <br /> List enforcement actions taken: NOR <br /> List enforcement actions rescinded: <br /> V. Local Agency Representative Data <br /> 3 <br /> Name: Margaret Lagoria Title: Supervising RENS <br /> j <br /> Signature: Date: ( „ -;L-1 <br /> VI. Central Valley Regional Water Quality Control Board (RB) Notification <br /> Date Submitted to RB: Response Date: <br /> RB Staff: Mark List Response:, <br /> Title: Engineering Geologist <br /> VII, Additional Comments, Data, etc. <br /> 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 /> ' it . <br />