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, <br /> 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) <1 <1 <.05 <.05 Ethylbenene <.003 <.005 <.0005 <.0005 <br /> TPH(Diesel) NA NA NA NA Xylene .025 <.005 <.0005 <.0005 <br /> Benzene <.003 <.005 <.0005 <.0005 MTBE 11 .011 1.3 <.0005 <br /> Toluene <.003 <.005 <.0005 <.0005 <br /> Comments: Soil Before results are from beneath UST 4/7/00. Soil After results are from boring TP-4S at 15 feet on 7/5/00. <br /> Water Before results are grab groundwater sample results from TP-4 on 7/5/00. Water After results are from the monitoring <br /> wells on 4/11/03. <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 /> rShould <br /> ment requirements: None <br /> ctive action be reviewed if land use changes? <br /> apor wells decommissioned:Yes Number Decommissioned: 4Number retained: 0 <br /> ent actions taken: NOR <br /> ent actions rescinded: <br /> V. Local Agency Representative Data <br /> Name: Donna Heran Title: Director of Environmental Health <br /> Signature: Date: -7_g,0 S <br /> VI. Central Valley Regional Water Quality Control Board (RB) Notification <br /> =ERBStaff: James <br /> RB: 9/22/05 Response Date: 10/07/04 <br /> L. BartonResponse: Concurrence <br /> EngineeringGeologist <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 />