Laserfiche WebLink
1 <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) Con aminant Soil (ppm) Water (ppm) <br /> Before After Before After I Before After Before After <br /> TPH (Gas) <.200 <.005 Eth Ibenene .097 <.0001 <br /> TPH (Diesel) 22,900 <.05 Xylerie .407 <.0001 <br /> Benzene .002 <.0001 MTBE <.002 NA <br /> Toluene .2 <.0001 PCE .085 .0041 <br /> Comments: There was no clean uplremediation performed. Soil Before results for TPH-d is from a slant boring on 2126107 <br /> and for TPH-g and BTEX, MTBE from B1-14 on 31612008. Water Before results are from a grab sample from B5 on <br /> 4120109. Soil contamination remains in place within about a 4 foot ra ius of the center of the UST that was closed in place. <br /> The volume of contaminated soil remaining is limited. The groundwrater is non-detect except for PCE which is below the <br /> MCL. <br /> IV, Closure <br /> Does completed corrective action protect existing beneficial uses pei the Regional Board Basin Plan? Yes <br /> Does completed corrective action protect potential beneficial uses PE r the Regional Board Basin Plan? Yes <br /> Does corrective action protect public health for current land use? Ye <br /> Site management requirements: None <br /> Should corrective action be reviewed if land use changes? Yes <br /> Monitoring/Vapor wells decommissioned: Number Decommissio ed: Number retained: 0 <br /> List enforcement actions taken: NOR <br /> List enforcement actions rescinded: <br /> V. Local Agency Representative Data <br /> Name: Donna Heran Title: Director of Environmental Health <br /> Signature: .., _ Date: <br /> VI. Central Valley Regional Water Quality Control Board (RB) Notification <br /> Date Submitted to RB: 9121109 Response Date: none <br /> RB Staff: James L.L. Barton Re ponse: none <br /> Title: Associate Engineering Geologist <br /> VII. Additional Comments, Data, etc. <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 />