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x i ` Case Closure Summary Page 2 <br /> .Leaking Underground Fuel Storage Tank�)gram <br /> III Release and Site Characterization Information (continued) <br /> Maximum Documented Contaminant Concentrations --Before and After Cleanup <br /> Contaminant Soil (ppm) Water F.NAr <br /> Contaminant Soil (ppm) Water (ppm) <br /> Before After Before Before After Before After <br /> TPH (Gas) 560 <1 2.2 Ethylbenene 8.8 x.005 .240 <.DOQS <br /> TPH(Diesel) NA NA NA Xylene 43 <.005 .710 <.0006Benzene 03 c005 003 . MTBE -5.025 -5.005 -5.001 -5.001 <br /> Toluene 5 -5.005 .0083 <.0005 1,2 DCA <.025 -5.005 4.0005 <.0005 <br /> Comments: Soil Before results are from soil boring 131 at 10 feet on 07124107. Soil After results are from MW2 at 10 feet on <br /> 214108. Water Before results are from B1-W on 7124107. Water After results are from all monitoring wells on 11111/08. No <br /> clean-up was conducted for this site. <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? Yes. <br /> MonitoringNapor wells decommissioned: Yes Number Decommissioned: 3 Number retained: 0 <br /> List enforcement actions taken: NOR <br /> List enforcement actions rescinded: <br /> ' V. Local Agency Representative'Data <br /> Name: Donna Heran Title: Director of Environmental Health <br /> 1~ Signature: Date: <br /> -]- /o- Z o <br /> V1. Central Valley Regional Water Quality Control Board"(RB) Notification <br /> EStaff: <br /> itted to-RB:' 4/30/09 "� Response Date: 51'8109 <br /> mes L.L. Barton Response: Concurrence <br /> iate En ineerin Geologist <br /> 5 <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 /> P' <br />