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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) 480 <1.0 56.0 0.06 Xyle nes 26.0 1.3 4.0 X0.0006 <br /> TPH (Diesel) 140 37.0 ND NA Eth (benzene 9.2 0.67 2.4 <0.0003 <br /> Benzene 1.0 <0.5 3.7 <0.0003 Oil&Grease ND NA 0.0021 NA <br /> Toluene 3.0 <0.5 1.2 <0.0003 Heavy Metals NA 5.6 NA NA <br /> MTBE 2.3 <1 3.4 0.0012 <br /> Comments:SOIL AND WATER'BEFORE' RESULTS FROM ENVIRONMENTAL ASSESSMENT BORINGS ON 9116198. <br /> SOIL `AFTER'.RESULTS FROM EXCAVATION SIDEWALL SAMPLES. WATER`AFTER' RESULTS FROM MOST <br /> CURRENT MONITORING WELL WATER SAMPLES. No SFBRW CB Environmental Screening Levels were exceeded. <br /> Cam [!ante with the Public Partici-pa-tion-requirements in Section 2728 of the California Code of Regulations has been met. <br /> IV. Closure <br /> Does completed corrective action protect existing beneficial uses pe 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: YES Number Decommissioned: 6 Number retained: 0 <br /> List enforcement actions taken. NOR <br /> List enforcement actions rescinded:.NONE <br /> V. Local Agency Representative Data <br /> Name: DONNA HERRN, REHS Till DIRECTOR, ENVIRONMENTAL HEALTH DEPT. <br /> Signature: Dale: <br /> VI. Central Valley Regional Water Quality Control Board (RB) Notification <br /> Date Submitted to RB: 06/20/06 Re ponse Date: 07/10/06 <br /> RB Staff: JAMES L.L. BARTON Response, CONCURRENCE <br /> Title: ENGINEERING GEOLOGIST <br /> Vil. Additional Comments, Data, etc. <br /> Site is an operating ranch.. Former tank pit location is an open area next to currently operating above ground tanks. There <br /> were no reported detections of ethylene dibromide or 1,2-DCA in eith ar soil or groundwater. <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 />