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L*cing Underground Fuel Storage Tank PrCtfram <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) NA NA NA NA Ethyl-benzene 9.6 <.005 NA <0.0005 <br /> TPH (Diesel) 8080. <1.0 NA 0.069 Xylene 84 <.005 NA <0.0005 <br /> Benzene <.005 <.005 NA <0.0005 <br /> Toluene <.005 <.005 NA <0.0005 <br /> MTBE NA <0.05 NA <0.05 <br /> Comments NOTE: GROUNDWATER RESULTS IN PARTS PER MILLION! <br /> SITE REMAINED AS UNRESOLVED SINCE 1990 UST REMOVAL. SITE DIRECTED TO CONFIRM SOIL AND <br /> GROUNDWATER STATUS IN PHS-EHD DIRECTIVE DATED FEBRUARY 26, 1997. A SINGLE GEOPORBE WAS AD- <br /> VANCED TO GROUNDWATER ON AUGUST 20, 1997 UNDER LATE PERMIT ISSUANCE TO DRILL AND WITNESSED <br /> BY PHS-EHD STAFF. REPORT OF FINDINGS RECEIVED JULY 13, 1998 IN "CLOSURE SUMMARY REQUEST". LAB <br /> REPORTED ONLY GROUNDWATER HIT AS "NO RECOGNIZABLE DIESEL RANGE PATTERN' FOR 69 PARTS PER <br /> BILLION of TPH-D IN GROUND WATER GRAB. NO MTBE PER 8260, AND 8240 ALL "ND" ALSO. <br /> IV. Closure <br /> Does completed corrective action protect existing beneficial uses per the Regional Board Basin Plan? NO CAP <br /> SUBMITTED OR REQUIRED BY PHS-EHD <br /> Does completed corrective action protect potential beneficial uses per the Regional Board Basin Plan? <br /> Does corrective action protect public health for current land use? <br /> Site management requirements: NONE <br /> Should corrective action be reviewed if land use changes? NO <br /> Have the Monitoring/Vapor wells been decommissioned? n/a Number Decommissioned: n/a Number retained: 0 <br /> List enforcement actions taken: NOR, FEB 26, 1997 <br /> List enforcement actions rescinded: NONE <br /> V. Local Agency Representative Data <br /> Name: Donna Heran / Margaret Lagorio Title: Director of Environmental Health / LOP Supervisor <br /> Signature: Date: <br /> VI. Central Valley Regional Water Quality Control Board (RB) Notification <br /> Date Submitted to RB: Response Date.- <br /> RB <br /> ate:RB Staff: MARK LIST Response: <br /> Title: Engineering Geologist <br /> VII. Additional Comments, Data, etc. <br /> ONE <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 /> MI/8/98 <br />