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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 /> Maximum Documented Contaminant Concentrations --Before and After Cleanup } <br /> Contaminant Soil 1(ppm) Water' (ppm) Contaminant Soil (ppm) Water (ppm) <br /> Before After Before After Before After Before I After <br /> TPH (Gas) Fthylbenene 3.2 <A005 <br /> TPH (Diesel) 4,140 .072 Xylene 8.6 .0007 <br /> Benzene <.005 <.0005 <br /> Toluene <.005 .0006 MTBE <13 <.005 <br /> Comments: All levels in ppm. Soil Before results from UST removal and soil probe sample SP1-13. There are no soil and <br /> water samples after listed since no cleanup was required. Groundwater Before is from soil probe SP-1 (grab water)sample. <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 /> Monitoring/Vapor wells decommissioned: NA Number Decommissioned: Number retained: <br /> List enforcement actions taken: NOR <br /> List enforcement actions rescinded: None.' <br /> V. Local Agency Representative Data <br /> � F <br /> Name: Do na Heran Title: Director of Environmental Health <br /> k <br /> Signature: Date: <br /> VI, Central Valley Regional Water Quality Control Board (RB) Notification <br /> Date Submitted to RB: 12/08/98 Response Date: 01/25/99 <br /> RB Staff: Mark List Response: Concurrence <br /> Title: 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 /> r <br /> r <br />