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- y <br /> Case Closure Summary : 'Exhibit ge 1 of 2 <br /> 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 /> b Water [ppb) Contaminant Soil ,(ppb) Water {ppb) <br /> Contaminant Soil (pp ) Before After Before After <br /> Before After Before After <br /> TPH (Gas) NO NO NO ND <br /> Benzene 14ppb NO 2.1 ppb NO <br /> Toluene ND NO 2.1 ppb NO <br /> Ethyibenzene 26ppb NO NO NO <br /> Xylene 25ppb NO 1.6ppb NO <br /> MTBE --- NO --- NO <br /> TBA NO --- 83 <br /> No remediation required. Soil and water before results were from sampling at the time of LIST removal. Soil and <br /> groundwater after resuits were 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 /> L 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 List enforcement actions rescinded: None 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: DoFa Heran Title: Director of Environmental Health <br /> Date: <br /> Signature: c,L�� —,1 6 — 1 <br /> VI. Central Valley Regional Water Quality Control Board (RB) Notification <br /> Date Submitted to RWQCB: 618199 Response Date: none <br /> RB Staff: Mark List Response: none <br /> Title: Engineering Geologist <br /> VII. Additional Comments, Data, etc. <br /> s <br /> TBA contamination in water only. <br /> This document and the related CASE CLOSURE LEITER, Shall be retained by the lead agency as part of the <br /> official site file. (08124193) Exhibit N Page 2 of 2 <br /> I <br />