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Case Closure Summary Page 2 <br /> Leaking Underground Fuel Storage Tank Program <br /> III Release and Site Characterization Information (continued) <br /> Maximum Documented Contaminant Concentrations-- Before and After Cleanup <br /> Contaminant Soil (ppm) Water (ppm) Contaminant Soil (ppm) Water (ppm) <br /> Before After Before After Before After Before After <br /> TPH (Gas) 1200 2880 .356 .245 Ethylbenene NA 42.4 <,0003 .001 <br /> TPH (Diesel) NA NA <.05 NA Xylene 250 79.5 .005 .004 <br /> Benzene 92 9.7 .021 .003 <br /> Toluene 250 6.4 .002 .0006 MTBE NA NA NA <.018 <br /> 1,2 DCA <.0005 <br /> EDB <.0005 <br /> Comments: All levels in ppm. Soil Before levels from soil below UST#1 at time of removal. Soil After levels are from <br /> MW 101 at 5' below surface grade on 10/16/97. Groundwater Before is from MW 1 on 9/8/95. Groundwater After is from <br /> MW1 on 8/31/00. <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 /> LpShouldrective action be reviewed if land use changes? Yes <br /> /Vapor wells decommissioned: No Number Decommissioned: 8 Number retained: 0 <br /> ement actions taken: NOR <br /> ement actions rescinded: None <br /> V. Local Agency Representative Data <br /> fme: Donna Title: Directorof Environmental Health <br /> nature: Date: <br /> r <br /> VI. ral Valley Regional Water Quality Control Board (RB) Notification <br /> Date Submitted to RB: 11/10/00 Response Date: 11/21/00 <br /> RB Staff: Marty Hartzell Response: Concurrence <br /> Title: Associate Engineering Geologist <br /> VII. Additional Comments, Data, etc. <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 />