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Soil - <br /> Groundwater NA <br /> - - 1 <br /> Barrels 6 Forward Landfill <br /> i <br /> Case Closure Summary: Exhibit N Page 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 /> II 1i <br /> Maximum Documented Contaminant Concentrations --Before and After Cleanup <br /> Contaminant Soil (ppm} Water (ppm) Contaminant Soil (ppm) Water (ppm) <br /> Before After Before After Before After Before After <br /> TPH(Gas) 1700 3200 NA NA Ethylbenzene 23 17 NA NA <br /> TRH(Diesel) NA NA Xylene „ ': 120 220 <br /> Benzene 2.3 6.7 Oil&Grease NA NA <br /> Toluene 41 32 Heavy Metals NA NA <br /> Mineral Spirits NA 'NA Lead NO ND <br /> MTBE NA ND i Ei <br /> Comments(Depth of Remediation, etc.): <br /> Site closure based on results of preliminary investigation. 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 /> t <br /> Site management requirements: none <br /> Should corrective action be reviewed if land use changes?(Yes) <br /> E��j <br /> Monitoring wells decommissioned: (Yes) Number Decommissioned:6 Number retained: 0 <br /> List enforcement actions taken: NOR sent <br /> List enforcement actions rescinded: Norte <br /> V. Local Agency Representative Data <br /> Name: Donna Heran Title: Director of Environmental Health <br /> SignatureDate: <br /> VI. Central Valley Regional Water Quality Control Board (RB)Notification <br /> Date Submitted to RB: Response;Date: <br /> E <br /> RB Staff: P.Anderson Response: . <br /> Title:Assoc Eng Geologist <br /> 3i 1 <br /> VII. Additional Comments, Data, etc. <br /> Soil Only <br /> This document and the related CASE CLOSURE LETTER,Shalt be retained by the lead agency as part of the official site <br /> file. (08124193) Exhibit N Page 2 of 2 <br />