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Case Closure Summary Page 2 <br /> beaking Underground Fuel Storage Tank Na4ram <br /> III Release and Site Characterization Information (continued) <br /> Maximum Documented Contaminant Concentrations--Before and After Cleanup <br /> Contaminant -toil (ppm) Water (ppm) Contaminant Soil (ppm) Water (ppm) <br /> Before After Before After Before After Before After <br /> TPH(Gas) 91100 <9,100 2.T49 <.05 Xylene 430 <430 .328 <.0005 <br /> TPH(Diesel) NIA WA NIA NIA Ethylbenzene 48 <48 .061 <.0005 <br /> Benzene 1.8 <1.8 .438 <.0005 Oil$Grease NIA WA NIA NIA <br /> Toluene 15 <15 .113 <.0005 Heavy Metals NIA NIA NIA NIA <br /> MTBE <br /> Comments: RESIDUAL SOIL CONTAMINATION EXISTS 351-40' BGS NEAR MW$2 WITH NO CURRENT IMPACT TO <br /> GROUNDWATER. ALL MWs CURRENTLY ND; NO OXYGINATES EVIDENCED IN GROUNDWATER. <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: (NO) Number Decommissioned: 0 Number retained: 6 <br /> List enforcement actions taken:. <br /> List enforcement actions rescinded: LEVEL ONE, NOR SENT TO RESPONSIBLE PARTY <br /> V. Local Agency Representative Data <br /> Name: MARGARET LAGORIO Title: SUPERVISING REHS <br /> SITE MITIGATION/LOP UNIT IV <br /> Signatu Date: Lq <br /> VI. Central Valley Regional Water Quality Control Board(RB) Notification <br /> Date Submitted to RB: Response Date: <br /> RB Staff. MARK LIST Response: <br /> Title: 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 />