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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 Before (ppm) Water (ppm) Contaminant Soil Before (ppm) Water (ppm) <br /> After Before After After Before After <br /> TPH Gas <1 NA NA NA Xylenes <.005 <.005 <.0006 <.0006 <br /> (Gas) <br /> <1 0.54 <.1 Eth (benzene <.005 <.005 <.0003 <.0003 <br /> TPH (Diesel) 1,100 NA NA<.0003 Oil&Grease NA NA <br /> Benzene <.005 <.005 <.0003 <br /> Toluene <.005 <.005 <.0003 <.0003 MTBE <.01 NA NA NA <br /> Comments: SOIL 'BEFORE' RESULTS FROM TANK REMOVAL; SOIL'AFTER' RESULTS FROM GEOPROBE BORINGS <br /> ADVANCED 06/26/07. WATER'BEFORE RESULTS FROM GRAB SAMPLES COLLECTED 12/06/00; WATER'AFTER' <br /> RESULTS FROM GRAB SAMPLES COLLECTED 6/26/07. NO ACTIVE REMEDIATION CONDUCTED ON 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 List enforcement actions rescinded: NONE 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 Title: DIRECTOR, ENVIRONMENTAL HEALTH DEPT. <br /> Signature: L v Date: 7 <br /> ._ <br /> VI. Central Valley Regional Water Quality Control Board (RB) Notification <br /> Date Submitted to RB: 08/23/07 Response Date: 08/31/07 <br /> RB Staff: JAMES L.L. BARTON Response: CONCURRENCE <br /> Title: ENGINEERING GEOLOGIST <br /> VII. Additional Comments, Data, etc. <br /> 1E-- <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 />