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r Y <br /> Case Closure Summary Page 2 <br /> Leaking Underground Fuel Storage Tank Program <br /> Ill. Release and Site Characterization Information (continued) <br /> Maximum Documented Contaminant Concentrations--Before and After Cleanup <br /> Soil Before (ppm) Water (ppm) Contaminant Soil Before (ppm) Water (Ppm) <br /> Contaminant After Before After <br /> After Before After 1,500 0.01 0.039 ND <br /> 14,000 970 2.6 ND Xylene ND 0.037 ND <br /> TPH (Gas) NA NA NA Ethylbenzene 210 NA NA <br /> TPH (Diesel) NA 0.0012 Oil&Grease NA NA <br /> 0.90 0.01 0.1 NA NA NA <br /> Benzene 0.01 0.0088 0.0011 Heavy Metals NA NA 2.39 <br /> Toluene 130 MTBE NA 0.09 <br /> ON-SITE FROM AN UPGRADIENT SOURCE. <br /> Comments: MTBE IN GROUNDWATER IS CONSIDERED TO BE MOVING <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 requirementsDTSC HAS REQUIRED A DEED RESTRICTION FOR THE SITE. <br /> : <br /> Should corrective action be reviewed if and use changes?YES Number retained: 0 <br /> m <br /> Monitoring/Vapor wells decomissioned: 9 <br /> Number Decommissioned: 11 <br /> List enforcement actions taken: NOR <br /> List enforcement actions rescinded: NONE <br /> V. Local Agency Representative Data <br /> Title: DIRECTOR OF ENVIRONMENTAL HEALTH <br /> Name: DONNA HERRN <br /> Date: _ O� <br /> Signature: <br /> VI. Central Valley Regional Water Quality Control Board (RB)Notification <br /> Response Date:6!27102 <br /> Date Submitted to RB: 5122102 ` <br /> RB Staff: MAR TY HARTZELL <br /> Response:CONCURRENCE <br /> Title: ASSOCIATE ENGINEERING GEOLOGIST <br /> VII. Additional Comments, Data, etc. I <br /> This document and the related CASE CLOSURE LETTER, <br /> Shall be retained by the Lead agency as Mart of the official <br /> site file. <br />