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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) Contaminant Soil (ppm) Water (ppm) <br /> Before After Before After Before After Before After <br /> TPH(Gas) 1600 <1 <.05 Ethylbenene 14 <.005 <.0005 <br /> TPH(Diesel) 18000 <.10 <.05 Xylene .96 <.005 <.0006 <br /> <.01 <.005 <.0005 MTBE <.01 <.005 <.001 <br /> Benzene <br /> Toluene <.01 <.005 <.0005 <br /> Comments: Soil before results are from the soil sample collected beneath the piping at PP-1 in September 2002. Soil after <br /> results are from soil samples collected from borings performed March 2003. Groundwater before is from the borings <br /> performed in March 2003. Contamination limited to soil beneath replaced piping. <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/Vapor wells decommissioned: NA Number Decommissioned: Number retained: <br /> List enforcement actions taken: NOR <br /> List enforcement actions rescinded: <br /> V. Local Agency Representative Data <br /> Name: Donna Heron Title: Director of Environmental Health <br /> Signature: Date: JUL-3 12003 <br /> VI. Ce ra alley Regional Water Quality Control Board (RB) Notification <br /> Date Submitted to RB: 7102103 Response Date: 7121103 <br /> RB Staff:James L.L. Barton Response: Concurrence <br /> Title:Associate Engineering Geologist <br /> Vii. Additional Comments, Data, etc. <br /> Soli Only. <br /> This document and the related CASE CLOSURE LETTER,Shall be retained by the lead agency as part of the official <br /> site file. <br />