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Case Closure Summary Page 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) C ntaminant Soil (ppm) Water (ppm) <br /> Before After Before After Before After Before After <br /> TPH(Gas) Na Na Na Na X lene 1.4 1.4 .0039 .0039 <br /> TPH(Diesel) 6,900 6,900 4.30 4.30 E hylbenzene .037 .037 a 0.005 <0.005 <br /> Benzene <0.02 <0.02 <.0005 <.0005 O 1 &Grease Na Na Na Na <br /> Toluene <0.02 <0.02 0.0017 0.0017 H avy Metals Na Na Na Na <br /> TBE <1.0 <1.0 <.0005 <.0005 <br /> Comments: Only soil and groundwater investigation conducted; no remediation occurred at this site. Soil concentrations are <br /> from geoprobe B-1 in source area identified at time of UST removal. Groundwater concentrations are from HP-1 near <br /> release area outside former tank location. <br /> IV. Closure <br /> Does completed corrective action protect existing beneficial uses er 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? es <br /> Site management requirements: Na <br /> Should corrective action be reviewed if land use changes?Yes <br /> Monitoring/Vapor wells decommissioned: Na Number Decommissioned: Na Number retained: 0 <br /> List enforcement actions taken: NOR sent to RP. <br /> List enforcement actions rescinded: <br /> V. Local Agency Representative Data <br /> Name: Donna Heran, REHSTitle: Director, Environmental Health Department <br /> Signature: ate: 4—O <br /> VI. Central Valley Regional Water Quality Control Board (RB) Notification <br /> Date Submitted to RB: Response Date: 05/21/04 <br /> RB Staff: J. Barton Response: No Further Action Required Concurrence <br /> Title: Eng. Geologist <br /> VII. Additional Comments, Data, etc. <br /> No active remediation occurred at this site. <br /> This document and the related CASE CLOSURE LETTER,Sha 11 be retained by the lead agency as part of the official <br /> site file. <br />