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1100) 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 /> Contaminant Soil (ppm) Water (ppm) I Contaminant Soil (ppm) . Water (ppm) <br /> Before After Before After f Before After Before After <br /> # TPH (Gas) 510 NA .6 .57 Ethylbenzene Z3 NA .0013 .40gg <br /> T PH (Diesel) NS NS NS NS Xylene Z2 NA .0062 .0084 i <br /> Benzene NO ND .0005 NO Oii&Grease NO NS NS NS <br /> Toluene .17 NA min No Heavy Metals NS NS NS NS � <br /> Mineral Spirits NS NS NS NS Lead 31 NA NS NS � <br /> .MTBE NS NS NS NS <br /> Comments (Depth of Remediation, etc.): Over excavation to depth of 10 fe°t Closure based an absence of benzene € <br /> e <br /> ZV. Closure <br /> Does completed corrective action profit existing beneficial uses per the Regional Board Basin Plan? (Yes) j <br /> Does campfeted corrective action protect potential beneficial uses per the Regional Board Basin Plan? (Yes) <br /> i <br /> Does corrective action protect public health for current land use? (Yes) <br /> I Site management requirements: none <br /> Should corrective action be reviewed if land use changes? (Yes) <br /> I � <br /> I Monitoring wells decommissioned: (No) Number Oecammissioned: 3 Number retained: 0 <br /> List enforcement actions taken: NOR sent <br /> i List enforcement actions rescinded: None i <br /> i <br /> V. Local Agency Representative Oats <br /> Name: Don a Heran f Title. Director of Environmental Health <br /> Signature: Date: s 7• �8 <br /> V1. Central Valley Regional Water Quality Control Board (RB) Notification <br /> i Date Submitted to RB: t y 3 , 14 q + Response Date: A vg US{ L{- �- <br /> RB Staff: J. Brathovde Resoonse: <br /> i tie: Assoc Eng Geologist Co rl C u lire A CQ <br /> VII. Additional CammenM Data, etc- <br /> Closure based an absence of Benzene. <br /> r <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. (0812993) Exhibit N Page 2 of 2 <br />