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Case Closure Summary Page 2 l <br /> Leaking Underground Fuel Storage Tank Program <br /> III Release and Site Characterization Information (continued) <br /> �I I <br /> Maximum Documented'Contaminant Concentrations --Before and After Cleanup <br /> i <br /> 3 <br /> Contaminant Son .1 (ppm) Water (ppm) Contaminant Soil (ppm) Water (ppm) <br /> Before After Before After Before After Before After <br /> TPH (Gas) 2040't 4.8 Ethylbenene NA .051 F <br /> TPH (Diesel) <1.0 Xylene 121.4 .250 4 <br /> Benzene ,073 .017 TCE <br /> Toluene 15.5!` .052 RCE F <br /> MTBE <.025 <br /> a J <br /> Comments: Soil Before results from soil sample obtained at the time of the UST removal. Soil After results from soil boring <br /> sample SB3 at 15 feet below grade. The soil sample from SB3 at 25 feet below grade was non detect. No remediation was <br /> required. <br /> ii <br /> 1 <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 f <br /> 'i <br /> Does corrective action protect public health for current land use? Yes I <br /> Site management requirements: None <br /> Should corrective action be reviewed if land use changes? No <br /> i` <br /> I <br /> MonitoringNapor wells decommissioned: Number Decommissioned: Number retained: <br /> .i <br /> List enforcement actions taken: NOR <br /> List enforcement actions "rescinded: <br /> V. Local Agency Representative Data I <br /> I <br /> Name: Donna Heran Title: Director of Environmental Health <br /> Signature: Date: oa � <br /> Vl. Central Valley Regional Water Quality Control Board (RB) Notification <br /> I <br /> Date Submitted to RB: 09/14/98 Response Date: <br /> RB Staff.. Mark List Response: No response F <br /> Title: Asso. Eng. Geologist <br /> Vll. Additional Comments; Data, etc. <br /> I <br /> E:SOIL ONLY <br /> This document and the elated CASE CLOSURE LETTER, Shall be retained by the lead agency as part of the official <br /> site file. ` <br />