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' Case Closure Summary Page <br /> •t. �eaking Underground Fuel Storage Tank ram <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) 360 <1 <.05 <.05 Xylene 13 x.005 <.0005 <.0005 <br /> TPH(Diesel) ND NA NA NA Ethylbenzene 3.2 <.005 <.0005 <.0005 <br /> Benzene 0.17 <.005 <.0005 <.0005 Oil &Grease NA <20 NA NA <br /> Toluene 7.3 <.005 <,0005 <.0005 Heavy Metals NA - NA <br /> MTBE NA <.005 0.046 <.002 <br /> Comments: SOIL BEFORE:2.0 ppm TETRACHLOROEf'HENE AND 2.2 ppm 1,1,1-TRICHLOROETHANE.. SOIL AFTER FOR <br /> THESE COMPOUNDS NON-DETECT at 5 ug/kg. SOIL BEFORE RESULTS FROM TANK PULL, SOIL AFTER RESULTS FROM <br /> OVEREXCAVATION. WATER BEFORE RESULTS FROM SB1a. WATER AFTER RESULTS FROM MW1. TETRACHLOROETHENE <br /> AND 1,1,1-TRICHLOROETHANE NON-DETECT AT 2 ug/l. <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 /> MonitoringNapor wells decommissioned: YES Number Decommissioned: 1 Number retained: 0 <br /> List enforcement actions taken: NOR <br /> List enforcement actions rescinded: NONE <br /> V. Local Agency Representative Data <br /> Name: DONNA HER Title: DIRECTOR OF ENVIRONMENTAL HEALTH <br /> Signature: Date: f <br /> Vi ral Valley Regional Water Quality Control Board (RB) Notification <br /> Date Submitted to RB: 09/28/01 Response Date: 11/07/01 <br /> RB Staff: MARTY HARTZELL Response: CONCURRENCE <br /> Title: ASSOCIATE ENGINEERING GEOLOGIST <br /> VII. Additional Comments, Data, etc. <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 />