SITE INFORMATION AND CORRESPONDENCE

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-S Case Closure Summary Page 2 Leaking Underground Fuel Storage Tank Program III Release and Site Characterization Information (continued) Maximum Documented Contaminant Concentrations --Before and After Cleanup Contaminant Soil (ppm) Water (ppm) Contaminant Soil (ppm) Water (ppm) Before After Before After Before After Before After TPH(Gas) <1000 <1 Ethylbenene <20 <.003 TPH(Diesel) NA NA Xylene 40 <.003 Benzene <20 <,003 Toluene <20 <.003 MTBE NA <.005 Comments: All levels in ppm. Soil Before levels from soil below west end of Tank 1 (east UST)at 15 feet below surface grade at time of removal. Soil After levels are from below west end of Tank 1 after further excavation at 16 feet below surface grade on 3/22/96. Samples collected 10 feet away beneath this Tank and Tank 2 were non detect at the time of the tank removals. No groundwater samples were collected. IV.Closure Does completed corrective action protect existing beneficial uses per the Regional Board Basin Plan? Yes Does completed corrective action protect potential beneficial uses per the Regional Board Basin Plan? Yes Does corrective action protect public health for current land use? Yes Site management requirements: None Should corrective action be reviewed if land use changes? Yes Monitoring/Vapor wells decommissioned: NA Number Decommissioned: Number retained: List enforcement actions taken: NOR List enforcement actions rescinded: None V. Local Agency Representative Data Name: Margaret Lagorio Title: Supervising REHS Signature: Date: VI. Central Valley Regional Water Ot laTity Control Board (RB) Notification Date Submitted to RB: Response Date: RB Staff: Marty Hartzell Response: Title:Associate Engineering Geologist VII. Additional Comments, Data, etc. This document and the related CASE CLOSURE LETTER,Shall be retained by the lead agency as part of the official site file.