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Case Closure Summary Page 2 <br /> L&,.ong Underground Fuel Storage Tank Progrv,,r <br /> 111 Release and Site Characterization Information (continued) <br /> Maximum Documented Contaminant Concentrations --Before and After Cleanup <br /> Contaminant Soil (ppb) Water (ppb) Contaminant Soil (ppb) Water (ppb) <br /> Before After Before After Before After Before After <br /> Benzene ND NO NT NO <br /> Toluene NO NO NT NO <br /> Ethylbenzene ND NO NT NO <br /> Xylene 300 NO NT NO <br /> MTBE NO NO NT NO <br /> TPHd 64,000 NO NT NO <br /> TPHg NO NO NT NO <br /> =remweion required. Soil before results were from soil sampled at the time of UST removal. Soil and groundwater after <br /> from preliminary assessment borings. <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 wells decommissioned: NA Number Decommissioned: NA Number retained: 0 <br /> i <br /> List enforcement actions taken: NOR sent <br /> List enforcement actions rescinded: None <br /> V. Local Agency Representative Data <br /> Name: DorTip Heran Title: Director of Environmental Health <br /> Signature: Date: ) — it-9000 <br /> VI. Central Valley Regional Water Quality Control Board (RB) Notification <br /> .Date Submitted to RB: July 26,1999 Response Date: 9116199 <br /> RB Staff: Michael Smith Response: Concurrence <br /> Title: Environmental Specialist II <br /> VII. Additional Comments, Data, etc. <br /> Soil only. <br /> This document and the related CASE CLOSURE LETTER, Shall be retained by the lead agency as part of the <br /> official site file. (08124193) Exhibit N Page 2 of 2 <br />