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i <br /> ' 1 <br /> Case Closure Summary Page 2 <br /> Leaking Underground Fuel Storage Tank Program ' <br /> I <br /> 111 Release and Site Characterization Information (continued) <br /> Maximum Documented Contaminant Concentrations --Before and After Cleanup <br /> Soil (ppm) Water (ppm) <br /> Contaminant Soil (ppm) Water (ppm) Contaminant Before After <br /> e After <br /> Before After Before After 3Before <br /> After .4 <.0005 <br /> 05 <br /> TPH (Gas) 150,000 <i 14 <.05 Ethylbenene 1 1 <.00i <br /> i,g <.05 Xylene 16000 <.005 <br /> TPH (Diesel) NA <T <.0005 EDC <.0017 .770 .0057 <br /> Benzene 1200 <.005 1.5 <br /> Toluene 7000 <.005 .049 <.0005 MTBE <:0005 .280 .0015 r <br /> Comments: Soil Before is from the UGT system removal Piping Line#3 on 11122189. Soil After is from VB-2-25' on 8/29/97. <br /> Groundwater Before for BTEX, TPH-g and TPH-d is from MW3 on 718193, EDC and MTBE is from MW1 on 718193. <br /> Groundwater After is from MW2 on 11121197. F <br /> IV. Closure <br /> Does completed corrective action protect existing beneficial uses per the Regional Board Basin Plan? Yes i <br /> Does completed corrective action protect potential beneficial uses per the Regional Board Basin Plan? Yes /I <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 r <br /> MonitoringNapor wells decommissioned: YES Number Decommissioned: 9 Number retained: 0 f <br /> List enforcement actions taken: NOR 1� <br /> List enforcement actions rescinded: 1 <br /> V. Local Agency Representative Data <br /> Name: Donna H n 1 Laurie Cotulla Title: Director of Environmental Heal <br /> Signature: Date: 2 2 9 <br /> TC raI Valley Regional Water Quality Control Board (RB) Notification <br /> Date Submitted to RB: 04/28/98 Response Date: 09/08/98 1 <br /> RB Staff: Mark List Response: Concurrence <br /> Title: Engineering Geologist <br /> VII- Additional Comments, Data, etc. <br /> l <br /> t <br /> This document and the related CASE CLOSURE LETTER, Shall be retained by the lead a <br /> site file. { <br />