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" Page 2 <br /> Case Closure Summary <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 /> < 79 475 <0.005 1.0 <0.020 <br /> <1.0 55.0 0.0Xylenes- <br /> TPH(Gas) S•18 <0.005 1.0 <0.020 <br /> TPH (Diesel) NA NA 7.8 4.28 Ethylbenzene .042 NA NA <br /> Benzene 0.676 <0.25 18.0 X0.020 Oil&Grease NA NA <br /> Toluene 0.321 <0.005 1.0 <0.020 Lead (pb) 32.2 NA NA NA <br /> 1-2 DCA .10 <0.10 2.5 <0.017 MTBE. 11..1 <1:0 85 <1.1 <br /> Benzene; B4 51.5' b s on <br /> ., r�TPH (Diesel). @ 9 <br /> no data fo . <br /> �' n 2117199 ) <br /> as PL8 5 0 ( <br /> Comments. Solt before' data; TPH (Gas) @ <br /> 6/7100. Toluene; PL8 @4'.on 2117199. 1-2 DCA B4@ 36.5' on 617100.MTBE; PL8 @ 4' on 2117199. Xylenes; PL11 @ 4' on <br /> 2117199_ Ethyl benzene;'PL1 I @ 4' on 2111199. MTBE; PL8 @ 4' on 2117/99. Lead Sample from repair to pipes 4' bgs on <br /> 2117199. 'Soil After' data from 2001 since no data analyzed after remediation; TPH (Gas); MW10@36bgs on 5130101. BTEX; <br /> I� @ 51' bgs on 5130101. MTBE; @ 51 bgs on 5130/01. 'Water before' data; TPH (Gas); MW6 on 9119/02. TPH (Diesel); MW7 <br /> ik on 9114101. Benzene; MW8 on12/14101. Toluene; MW6 on 1211'1102. 1-2 DCA; MW6 on 919103. Xylenes; MW6 on 12111102. <br /> Ethyl benzene ; MW6 on 12111102. MTBE; MW6 on 12111/02. 'Water after' data; TPH (Gas); MW12 on 1/18110. TPH <br /> (Diesel); MW7 on 6114111. BTEX; MW6 on 6114111. 1-2 DCA; MW12 on 6114111. MTBE; MW6 on 6114/11 No`before' and <br /> 'after data analyzed for Oil &Grease for soil and water. No`after'data for.soil and water anal zed for Lead. <br /> IV. Closure <br /> Does completed corrective action protect existing beneficial uses pe.r the Regional Board Basin Plan?YES <br /> k Does completed corrective action protect potential beneficial uses per the Regional Board Basin Plan? YES <br /> i 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 /> i Monitoring/Remediation wells decommissioned: 13 Monitoring, 5 Ozone Injection Number Decommissioned: 18 <br /> Number retained: 0 <br />! List enforcement actions taken: Notice of Responsibility: 2/1/2000 <br /> List enforcement actions rescinded: NONE <br /> f <br /> V. Local Agency Representative Data <br /> I ' <br /> Name: DONNA RERAN, REHS Title: "DIRECTOR <br /> Signature: - ' Date: 8/10/2012 <br /> VI. Central Valley Regional Water Quality Control Board(RB) Notification <br /> Date Submitted to RB: 10/27/2011 Response Date: 11/18/2011 <br /> RB Staff: JAMES L.L. BARTON, PG Response: 11/18/2011 <br /> Title: ENGINEERING GEOLOGIST <br /> VII. Additional Comments, Data, etc. <br /> ORIGINAL RELEASE WAS FROM PRODUCT LINES AND DISPENSERS. DISPENSERS REPAIRED IN 1999. <br /> ' This document and the related CASE CLOSURE LETTER shall be retained by the lead agency as part of the official site file. <br /> f <br />