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Case Closure Summary Page' <br /> � <br /> beaking Underground Fuel Storage Tank Pram . <br /> J. <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 /> ITPH (Gas) 28,000 240 150 ND Xylene 1,400 28 270 ND <br /> TPH(Diesel) NA NA NA NA Ethylbenzene 250 3.7 4.7 ND <br /> Benzene 230 .01 9.4 ND oil&Grease NA NA NA NA <br /> Toluene 1,200 3.1 23.0 ND Heavy Metals NA NA NA NA <br /> MTBE NA .0083 3.8 .006 <br /> Comments: SOIL BEFORE RESULTS FROM TANK PULL SAMPLES COLLECTED 2/28189. SOIL AFTER RESULTS <br /> FROM CONFIRMATION BORING SOIL SAMPLES COLLECTED 3110100. WATER BEFORE RESULTS FROM MW2 ON <br /> 8120198. WATER AFTER RESULTS FROM QUARTERLY MONITORING ON APRIL 2, 2001. <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: YES Number Decommissioned: 14 Number retained: 0 <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 List enforcement actions rescinded: NONE 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 ENVIRONMENTAL HEALTH <br /> Signature: Date: <br /> VI. Central Valley Regional Water Quality Control Board (RB) Notification <br /> Date Submitted to RB: 05/08/01 Response Date: 06/01/01 <br /> RB Staff: MARTY HARTZELL Response: CONCURRENCE <br /> Title: ASSOCIATE 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 /> I� <br /> i <br />