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Case Closure Summary : Exhibit - Page 1 of 2 <br /> Can Closure Summary Page 2 <br /> Leaking Underground Fuel Storage Tank Program <br /> [if Release and Site Characterization Information (continued) <br /> Maximum Documented Contaminant Concentrations -- Before and After Cleanup <br /> =moss=0191miNNERRMContaminant Soil (gym) Water (ppm) Contaminant Soil <br /> Before Ager Before After Before After) Before Water APoteri <br /> TPH (Gas) WA WA NO NO Ethylbenzene 1.45 .009 NO ND <br /> TPH (Diesel) 7200 11 NO NO Xylene .2 .048 .00095 NO <br /> Benzene NO .012 .00052 NO Oil a Grease NO 150 WA WA <br /> Toluene .018 .007 .00078 NO Heavy Metals <br /> Mineral Spirits WA WA WA WA Lead <br /> Comments (Depth of Remediation, etc.): <br /> Two excavations for USTs one excavation for ASTs ranging from 10 to 23 feet deep removed approximately 1241 yds3 of <br /> soil which was treated on site using ex situ bioremediation. Groundwater contamination was documented once in 5 <br /> quarters of monitoring. <br /> IV. Closure <br /> Does completed corrective action protect existing beneficial uses per the Regional Board <br /> Basin Plan? (Yes) <br /> Does completed corrective action protect potential beneficial uses per the Regional Board <br /> 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: (Yes) Number Decommissioned: 3 Number retained: 0 <br /> List enforcement actions taken: NOR sent 2/16/94 <br /> List enforcement actions rescinded: None <br /> V. Local Agency Representative Data <br /> IS <br /> me: Do Heran Title: Director of Environmental Health <br /> gnature: Date: L7-11-76 <br /> VI. Central Valley Regional Water Quality Control Board (RB) Notification <br /> Date Submitted to RB: Response Date: <br /> RB Staff: J. Brathovde Response: <br /> Title: Assoc Eng Geologist <br /> VII. Additional Comments, Data, etc. <br /> Soil Only <br /> This document and the related aretained y the lead agency as part of the o cia <br /> site tile. (08/24/93) Exhibit N Page 2 of 2 <br />