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- Case Closure Summary Page 2 <br /> Leaking Underground Fuel Storage Tank Program <br /> 111 Release and Site Characterization Information (continued) <br /> II <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 /> TPH(Gas) NO NO NO NO <br /> Benzene 14ppb NO 2.1 ppb NO . <br /> Toluene NO NO 2.1 ppb NO <br /> Ethyibenzene 26ppb NO NO NO <br /> Xylene 25ppb NO 1.6ppb NO <br /> MTBE --- NO --- NO <br /> TBA --- ND 83 <br /> No remediation required. Soil and water before results were from sampling at the time of UST removal. Soil and <br /> groundwater after results were from preliminary assessment borings. <br /> i <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 /> List enforcement actions taken: NOR sent <br /> List enforcement actions rescinded: None <br /> V. Local Agency Representative Data <br /> Name: Donna Heran GLr e t I- l c7 Title: Director of Environmental Health v,s1 eEt <br /> Signature: Date: {p 9 <br /> I <br /> VI. Central Valley Regional Water Quality Control Board (RB) Notification <br /> Date Submitted to RB: Response Date: <br /> RS Staff: Mark List Response: <br /> Title: Engineering Geologist <br /> VIE. Additional Comments, Data, etc. <br /> TBA contamination in water:only. <br /> i <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 />