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Case Closure Summary' Page 2 <br /> Leaking Underground Fuel Storage TanRProgram <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 <br /> ) Water I <br /> Before After Before After Before AfterBefore After) <br /> TPH(Gas) NIA NIA NIA NIA Ethylbenzene <.005 <.005 NIA NIA: <br /> TPH(Diesel) 35 35 NIA NIA Xylene .631 .631 NIA NIA } <br /> Benzene <.010 <.010 NIA NIA Oil&Grease NIA NIA NIA NIA ' <br /> Toluene .018 .018 NIA NIA Heavy Metals NIA NIA NIA NIA I <br /> Mineral Spirits NIA NIA NIA NIA Lead NIA NIA N/A NIA <br /> MTBE NIA NIA NIA NIA <br /> Comments: DIESEL CONTAMINATION EVIDENCED IN SOIL SAMPLES COLLECTED AT TIME OF T.R. SITE <br /> ASSESSMENT WITH SOIL BORING COULD NOT CONFIRM CONTAMINATION; 3 BORINGS,5 SAMPLES ND. <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 Pian? 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? <br /> MonitoringNapor wells decommissioned: NIA Number Decommissioned: NIA Number retained: NIA <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 List enforcement actions rescinded: NONE , 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: —1� Date: <br /> Vl. 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 /> j' <br /> Vll. 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 I'agency as part of the o#ficia[ <br /> site file. <br /> I <br /> w <br /> 4 <br />