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s,,,,,Aking Underground Fuel Storage Tank PN!9, m <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) 740 NA 34 <0.050 Xylenes 17 NA 1.6 <0.0005 <br /> '0.050 Ethylbenzene 0.27 NA <0.0025 <0.0005 <br /> TPH (Diesel) 18,000 NA 750 y <br /> < <0.0005 TPHmo NA NA NA NA <br /> Benzene '0.005 NA 0.0025 <br /> Toluene <0.005 NA <0.0025 <0.0005 Lead <0.5 NA NA NA <br /> 1-2 DCA '0.005 NA <br /> '0.0025 '0.0005 MTBE <0.005 NA <0.0025 <0.0005 <br /> Comments: Soil 'Before' TPHg; B3-3@16' on 2/5/03, TPHd;1 East @ 8' on 5/14/90, Benzene; 1 West @ 8' on 5/14/90, <br /> Toluene; 63-3 @ 16' on 2/5/03, 1,2 DCA from B-3-3 @ 16', Xylenes; B-3-3 @ 16'on 2/5/03, Ethylbenzene; 1 East @ 8' on <br /> 5/14/90, Lead; 1 West @ 8' on 5/14/90, MTBE; 133-3 @ 16' on 2/5/03. No data for Soil 'After', TPHmo not analyzed for soil <br /> before. Water'Before' is from B-3 on 2/5/03 depth unknown for TPHg, TPHd, Benzene, Toluene, 1-2 DCA, Xylenes, <br /> Ethylbenzene. No Water'Before' for Lead. Water'After'from MW-2 on 8/10/09 for TPHg, TPHd, Benzene, Toluene, 1-2 <br /> DCA, Xylenes, Ethylbenzene, and MTBE. No Water&Soil 'After'for Lead. <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: No Number Decommissioned: 0 Number retained: 3 <br /> List enforcement actions taken: Notice of Responsibility: 1/21/98, 212/98 <br /> List enforcement actions rescinded: None <br /> V. Local Agency Representative Data <br /> Name: ADRIENNE ELLSAESSER, REHS Title: ACTING PROGRAM COORDINATOR, UNIT IV <br /> Signature / �? Date: P112_ <br /> Vl. Central Valley Regional Water Quality Control Board RB Notification <br /> Date Submitted to RB: Response Date: <br /> RB Staff: JAMES L.L. BARTON, PG Response: <br /> Title: ENGINEERING GEOLOGIST <br /> VII. Additional Comments, Data, etc. <br /> IF-- <br /> This document and the related CASE CLOSURE LETTER shall be retained by the lead agency as part of the official site file. <br /> Page 2 <br />