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T <br /> I <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 Before (ppm) Water (ppm) Contaminant Soil Before (ppm) Water (ppm) II <br /> After Before After After Before After <br /> TPH (Gas) 14,000 970 2.6 ND Xylene 1,500 0.01 0.039 ND <br /> TPH (Diesel) NA NA NA NA Ethylbenzene 210 ND 0.037 ND <br /> Benzene 0.90 0.01 0.1 0.0012 Oil&Grease NA NA NA NA <br /> Toluene 130 0.01 0.0088 0.0011 Heavy Metals NA NA <br /> NA NA <br /> MTBE NA 0.09 NA 2.39 <br /> Comments: MTBE IN GROUNDWATER IS CONSIDERED TO BE MOVING ON-SITE FROM AN UPGRADIENT SOURCE. <br /> I <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: DTSC HAS REQUIRED A DEED RESTRICTION FOR THE SITE. <br /> Should corrective action be reviewed if land use changes?YES <br /> Monitoring/Vapor wells decommissioned: 9 Number Decommissioned: 11 ..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 List enforcement actions rescinded: NONE 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, RENSTitle: SUPERVISOR, SITE MITIGATION UNIT <br /> Signature: Date: <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 <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 />