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Case Closure Summary Page 2 <br /> Leaking Underground Fuel Storage Tank Program <br /> Ill. Release and Site Characterization Information (continued) <br /> Maximum Documented Contaminant Concentrations-- Before and After Cleanup <br /> Contaminant Soil Before (ppm) Water (ppm) Contaminant Soil Before (ppm) Water (ppm) <br /> After Before After After Before After <br /> TPH (Gas) 3.1 NA Xylenes 0.4 0.007 <br /> TPH (Diesel) 9,100 580 Ethylbenzene 0.06 ND <br /> Benzene 0.05 ND Oil&Grease 130 NA <br /> Toluene ND ND Heavy Metals 14 NA <br /> MTBE 4.4 ND <br /> Comments: Soil before concentrations from 1998 tank pull samples. Soil after concentrations from 12/98 re-sampling of <br /> north end of diesel tank, except MtBE from 10-foot bsg piping re-sample from same area. No water samples were collected <br /> at this site. No active remediation was done at this site. <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: 0 Number Decommissioned: 0 Number retained: 0 <br /> List enforcement actions taken: NOR <br /> List enforcement actions rescinded: NONE <br /> V. Local Agency Representative Data <br /> Name: DONNA RERAN, REHS, DIRECTOR Title: ENVIRONMENTAL HEALTH DEPARTMENT <br /> Signature: , Date: <br /> VI. Central Valley Regional Water Quality Control Board (RB) Notification <br /> Date Submitted to RB: 10/14/03 Response Date: 11/07/03 <br /> RB Staff: Donna Heran, REHS, Director Response: CONCURRENCE <br /> Title: Environmental Health Department <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 />