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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) 0.140 na 25.000 0.210 Ethylbenene 0.024 na 0.034 0.002 <br /> Benzene 0.005 na 0.160 0.033 Xylene 0.003 na 1.600 0.013 <br /> Toluene 0.070 na 3.500 0.010 MTBE na na <0.005 <0.005 <br /> Comments: <br /> NA-NOT ANALYZED <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? NO <br /> Monitoring/Vapor wells decommissioned: YES Number Decommissioned: 9 Number retained: NONE <br /> List enforcement actions taken: NONE <br /> List enforcement actions rescinded: NONE <br /> V. Local Agency Representative Data <br /> Name: Donna Heran Title: Director of Environmental Health <br /> Signature: Date: <br /> VI. Central Valley Regional Water Quality Control Board (RB) Notification <br /> Date Submitted to RB: September 4, 1997 Response Date: October 1, 1997 <br /> RB Staff: J. Brathovde Response: NFA Concurrence <br /> Title: Assoc Eng Geologist <br /> VII. Additional Comments, Data, etc. <br /> Monitor wells destroyed March 27, 1998. <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 />