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Case Closure Summary Page <br /> aking Underground Fuel Storage Tank P1am <br /> I11 Release and Site Characterization Information (continued) <br /> Maximum Documented Contaminant Concentrations --Before and After Cleanup , <br /> Water m <br /> Contaminant Soil (ppm) Water (ppm) Contaminant Soil (ppm) g fo a After, <br /> Before After <br /> Before After Before After 10 <.005 NT... <.0005 <br /> 250 <1.0 NT... <.001 Xylene <.0fl5 <0005 <br /> TPH(Gas) 420 .056 Ethylbenzene 1.4 <.250 <br /> TPH (Diesel) 3500 0005<.0005 Oil &Grease NA 3100 <br /> 14 <.005 NT NT <br /> Benzene <.005 <.0005 Chromium 40 NT <br /> Toluene .81 <. Lead 110 NT <br /> PCB 3.5 <.6 Oi <br /> Oi <.flQS <.001 MTBE <.40 <0.005 <.O <br /> TCE .0016 <br /> PCE .22 .250 <br /> CE <br /> 046 <.005 <.Ofli <br /> 1,2:D <br /> Comments: Soil before samples are from UST removal; soil after results are from soil borings on 3116100. Water after <br /> results are from qrab groundwater sample- Aurin n bare hole construction. <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 /> Number Decommissioned: 0 <br /> Number retained. 0 <br /> Monitoring/Vapor wells decommissioned: 0 <br /> List enforcement actions taken: NOR <br /> List enforcement actions rescinded: NONE <br /> V. Local Agency Representative Data <br /> Name: MARGARET LAGORIO, RENS Title: SUPERVISOR, SITE MITIGATION UNIT <br /> Date: g a 3 0 C� <br /> Signature: <br /> ture: <br /> 9 <br /> . <br /> Vl. Central Valley.Regional Water Quality Control Board (RB) Notification <br /> Date Submitted to RB: <br /> Response Date: <br /> RB Staff: MARTY HARTZELL Response: <br /> Title: ASSOCIATE ENGINEERING GEOLOGIST <br /> Vil. Additional Comments, Data, etc. <br /> Einimal soiland groundwatercotamination apparent. Well survey completed. Six wells idenkified.within 2000 ft of site. <br /> he nearest wells are —1000 ft W, SW,S and E of the site. <br /> This document and the related CASE CLOSURE LETTER, <br /> Shall be retained by the lead agency as part of the official <br /> site file. <br /> 4 <br />