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Case Closure Summary e 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 (ppm) Water (ppm) Contaminant Soil (ppm) Water (ppm) ; <br /> Before After Before After Before After Before After <br /> TPH(Gas) 29 29 NIA NIA Xylene .014 .014 NIA NIA <br /> TPH (Diesel) 40,000 40,000 NIA NIA Ethylbenzene .5 NIA NIA <br /> Benzene .15 .15 NIA NIA Oil &Grease NIA NIA NIA <br /> Toluene .13 .13 NIA NIA Heavy Metals NIA NIA NIA <br /> Mineral Spirits NIA NIA Lead NIA NIA NIA <br /> MTBE NIA NIA <br /> Comments: 3 PHASES OF SUBSURFACE INVESTIGATION REVEALED LOW LEVEL PETROLEUM HYDROCARBON <br /> WEST OF DISPENSER ISLAND TO 45' BGS. II <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: 0 Number retained: 0 <br /> i <br /> List enforcement actions taken:. NOR SENT <br /> List enforcement actions rescinded: NONE <br /> V. Local Agency Representative Data <br /> Name: MARGARET LAGORIO Title:SUPERVISING REHSISITE MITIGATION-LOP.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: PAT ANDERSON Response: <br /> Title: HYDROGEOLOGIST <br /> VII. Additional Comments, Data, etc. <br /> SOIL ONLY- LOW RISK SOIL CASE <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 />