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n <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 /> Contaminant soil (ppm) Water (ppm) Contaminant Soil (ppm) Water (ppm) <br /> Before After Before After Before After Before After <br /> TPH (Gas) 4 <1 <.05 <.05 Et ylbenene <.3 <.005 <.0005 <.0005 <br /> TPH(Diesel) 51 <1 .840 .210 Xy ene <.9 <.005 <.0005 <.0005 <br /> Benzene <.3 <.005 <.0005 <.0005 <br /> Toluene <.3 <.005 <.0005 <.0005 M1 BE NA <.005 <.001 <.001 <br /> Comments: All levels in ppm. Soil Before levels from Soil Boring 4, in area of UST #1 removed prior to 1984 at 21 feet <br /> below surface grade. Soil beneath UST#2 was non detect for con4 aminants at time of removal on 9116199. Soil After levels <br /> are from Monitoring wells 1 &2 in area of UST's 1 &2 on 1217199. Groundwater Before levels are from monitoring well <br /> MW 1 on 12116199. Groundwater After levels are from MW 1 on 1/29/01. Soil and groundwater contamination in the <br /> unknown source area are not included in this table. No remediationwas required. <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 :)er 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: No Number Decommissioned: 0 Number retained: 3 <br /> List enforcement actions taken: NOR <br /> List enforcement actions rescinded: None <br /> V. Local Agency Representative Data <br /> Name: Margaret LagorioTitle: Supervising REHS <br /> Signature: ��y� „ ate: <br /> VI. Central Valley Regio9l Water Quality ontrol Board (RB) Notification <br /> Date Submitted to RB: Response Date: <br /> RB Staff: Marty HartzellResponse: <br /> Title: Associate Engineering Geologist <br /> VII. Additional Comments, Data, etc. <br /> This document and the related CASE CLOSURE LETTER, Sha l be retained by the lead agency as part of the official <br /> site file. <br />