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Case Closure Summary <br /> 0 Leaking Underground Fuel Storage Tank Program Page 2 <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 <br /> After Before After (ppm). <br /> TPN Gas After Before After <br /> (Gas) 5.52 <1.0 55.0 <0.050 Xylenes 1.04 <0.005 <0.10 <0.020 <br /> TPH (Diesel) NA NA NA NA Ethylbenzerie <0.005 <0.005 <0.10 <br /> Benzene 0,187 <0.005 . <0.10 <0.020 Oil&"Grease NA NA NA <0.020 <br /> NA <br /> Toluene 0.005 <O:OpS X0.10 <0.020 Heavy Metals <10 (Pb) NA NA <br /> NA <br /> MTBE 4.31 <0.10 69.0 . 1.1 <br /> Comments: SOIL 'BEFORE' DATA FROM PL-7 @ 4.3 FT BSG ON 2111199''SOIL 'AFTER' DATA FROM PL-7 @ 5 FT BSG <br /> ON2/17/99; WATER 'BEFORE' DATA FROM MW-6 ON.9/19/02;'WATER 'AFTER'DATA FROM MW-6 ON-6114111, <br /> IV. Closure <br /> Does completed corrective action protect existing.beneficial uses per the Regional Board Basin Plan?YES <br /> 1 <br /> Ep <br /> Does compEj <br /> leted corrective action protect potential beneficial uses per the Regional Board Basin Plan? YES <br /> k <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/Remediation wells decommissioned: NO Number Decommissioned: 0 Number retained: 13 <br /> List enforcement actions taken: NOR <br /> List enforcement actions rescinded NONE <br /> V. Local Agency.Representative Data <br /> Name. ADRIENNE ELLSAESSER, RENS Title: ACTING PROGRAM COORDINATOR, UNIT'IV <br /> Si afore: Date: <br /> /o/z� �r <br /> VI. Central Valley Regional Water Quality Control.Board.(RB) Notification <br /> Date Submitted to RB: Response Date: <br /> i <br /> RB Staff: JAMES L.L. BARTON, PG Response: <br /> Title: ENGINEERING GEOLOGISTn-- - ..-_..... <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 site file. <br /> I <br /> i <br />