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Case Closure Summary Page <br /> 00' eaking Underground Fuel Storage Tank No*am <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) 64.0 3.0 ND Xylene 0.9 0.02 ND <br /> TPH(Diesel) 5,200 ND ND Ethylbenzene 0.3 0.05 ND <br /> Benzene 0.008 0.073 ND Oil&Grease NA NA 1.3 <br /> Toluene 0.012 0.15 ND Heavy Metals NA NA ND <br /> MTBE 0.18 0.18 ND <br /> Comments:'Before'results from the tank removal sampling; 'After"results from the over-excavation sampling. <br /> 'Before'MTBE soil sample from dispenser, D-2,at 6 feet bsg. 'After'MTBE soil sample from over-excavation,WX-9,at 20 <br /> feet bsg. Water results from domestic water well on site. <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: 0 Number Decommissioned: 0 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 List enforcement actions rescinded: NONE 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, REHS Title: DIRECTOR, <br /> ENVIRONMENTAL HEALTH DEPARTMENT <br /> Signature: d7 � Date: <br /> VI. Central Valley Regional Water Quality Control Board(RB)Notification <br /> Date Submitted to RB: 10/16/00 Response Date: 02/06/02 <br /> RB Staff.MARTY HARTZELL, RG Response: CONCURRANCE <br /> Title: ASSOCIATE ENGINEERING GEOLOGIST <br /> VII. Additional Comments, Data, etc. <br /> SOIL ONLY SITE. <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 />