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Nk / <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 (ppm) Water (ppm) Contaminant Soil (ppm) Water (ppm) <br /> Before After Before After Before After Before After <br /> TPH(Gas) 300 ppm ND ND Ethylbenzene 480 ppm ND ND <br /> TPH (Diesel) NS NS Xylene 3320 ppm ND ND <br /> Benzene 70 ppm ND ND <br /> Toluene 890 ppm ND ND <br /> MTBE NS ND <br /> Comments: The site was closed after the samples showed that the soil at the original excavation point was clean. <br /> ND is <.005 ppm for BTEX in soil , <1 ppm for TPH gas in soil, <.5ppb for BTEX in water, <50ppb for TPH gas in water, <br /> and <5ppb for MTBE in water. <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? No <br /> Monitoring/Vapor wells decommissioned: Number Decommissioned: Number retained: <br /> List enforcement actions taken: NOR dated 4/17/97 <br /> List enforcement actions rescinded:. None <br /> V. Local Agency Representative Data <br /> Name: Donna Heran Title: Director of Environmental Health <br /> Signature: Date: 0 7 <br /> VI. Central Valley Regional Water Quality Control Board (RB) Notification <br /> Date Submitted to RB: Response Date: <br /> RB Staff: J. Brathovde Response: <br /> Title:Assoc Eng Geologist <br /> VII. Additional Comments, Data, etc. <br /> SOIL ONLY <br /> his document and the related CASE CLOSURE LETTER, Shall be retained by the lead agency as part of the official <br /> site file. <br />