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Case Closure Summa Page ge 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 /> 1 <br /> Contaminant Soil (ppm) Water (ppm) Contaminant Soil (ppm) Water (ppm) <br /> Before After Before After I Before After Before After <br /> TPH(Gas) 625 <1 <.05 Ethylbenene 373.5 <.005 <.0005 <br /> TPH (Diesel) NA NA NA Xylene 6.5 <.005 <.0005 <br /> Benzene x.005 <.005 <.0005 <br /> Toluene 6.95 <.005 <.0005 MTBE 17.9 <.005 <.001 <br /> Comments: Ail levels in ppm...Soil Before levels from UST removal samples on 10/13/99. Soil After levels are from soil <br /> boring samples on 6/21-22/04.. Groundwater Before levels are from soil boring grab water samples.on 6/21-22/04. No <br /> remediation was.performed. <br /> i <br /> IV. Closure <br /> t <br /> Does completed corrective action protect existing beneficial uses per.the Regional Board Basin Plan? Yes. <br /> Does completed correctiveaction 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: 0. Number retained: a <br /> List enforcement actions taken: NOR <br /> List enforcement actions rescinded: None <br /> V. Local Agency Representative Data <br /> Name:,;Donna-Heran � ,. ::�. Title Director of`Envifanmental'Health <br /> Signature: - Date: . <br /> w�r�- . <br /> VI. Central Valley Regional Water Quality.Control Board (RB)Notification <br /> Date Submitted to RB:. 1124106 Response Date: 313106 <br /> RB Staff: James Barton 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 />