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Page Pa 2 <br /> Case Closure Summary 9 Leaking Underground Fuel Storage Tank Program <br /> III Release anri Sit,ChnfActerlZatlOn Information (continued) <br /> Before and After Cleanup m Water (PPm) <br /> Maximum Documented Contaminant Concentrations - Contaminant soil (ppm) Before After <br /> Water (Ppm) Before After J <br /> Soil (ppm) Before After 7 6 13 <br /> Contaminant Before After Ethylbenene 67 <br /> i 770. 160 <br /> TPH (Gas) 1900 Xylene <br /> TPH (Diesel) <.01 <br /> <2.6 <•1 MTBE <br /> Benzene 64 6.9 <br /> Toluene <br /> 1 Comments: All levels in ppm. Soil Before from 11/24/92 sample from bottom. UST excavation at 9.5 feet below gra o <br /> Soil After from 9121/95 <br /> UST exca Soil probe sample bottom <br /> ma plea t all limited amount of contaminated soil) rema22 cubic yards of cont ins in place. <br /> arninated II removed <br /> and stockpiled on s <br /> N. 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 List enforcement actions rescinded: None <br /> V. Local Agency Representative Data <br /> Name: Donna Heran urie Cotulla Title: Director of Environmental Health/ Program Manager <br /> Signature: Date: <br /> VI. C r alley Regional VVater Quality Control Board (RB) Notification <br /> e Submitted to RB: 11/30/98 Response Date: 12/21/98 <br /> RB Staff: Mark List Response: Concurrence <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 />