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Case Closure Summary Page I <br /> aking Underground Fuel Storage Tank Pl. -am <br /> III Release and Site Characterization Information (continued) <br /> Maximum Documented Contaminant Concentrations r- Before and After Cleanup <br /> Aft <br /> m <br /> Contaminant . Soil (ppm) Water (Ppm) Contaminant Soil (ppm) Water ? <br /> Before After Before After Before After Before AAftr . . er <br /> 1,400 28 270 ND <br /> TPH(Gas) 28,000 240 150 ND , Xylene 3.7 4.7 ND <br /> TPN[Diesel} NA NA NA NA Ethylbenzene 250 NA NA <br /> NA NA <br /> Benzene 230 .01 9.4 ND Oil 8�Grease NA NA NA NA <br /> Toluene 1,200 3.1 23.0 ND . Heavy Metals NA .0083 3.8 .006 <br /> MTBE <br /> Comments: SOIL BEFORE RESULTS FROM TANK PULL SAMPLEo/COLLECTED. ATER BEFORE REO U TS FROM MW2 ON <br /> FROM CONFIRMATION BORING SOIL SAMPLES COLLECTED 31 <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 /> ----------------- <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 List enforcement actions rescinded: NONE 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: MARGARET LAGORIO, REHS Title: SUPERVISOR, SITE MITIGATION UNIT. <br /> Signature: Date: 5 f Q I <br /> VI. Central Valley Regional Water Quality Control Board (RB) Notification <br /> Date Submitted to RB: Response Date: <br /> RB Staff: MARTY HARTZELL Response: <br /> Title: ASSOCIATE ENGINEERING GEOLOGIST i <br /> VII. Additional Comments, Data, etc. <br /> f <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 />