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Kwlkee Food Mart,2081 Country Club Blvd,Stockton. <br /> f <br /> Y NAM!* <br /> Case Closure Summary Page 2 of 2 <br /> Leaking Underground Fuel Storage Tank Program <br /> III Release and Site Characterization Information continued <br /> Maximum Documented Contaminant Concentrations --Before (highest-historical) and After <br /> most recent)Cleanup <br /> Contaminant Soil (ppm) Water (ppm) Contaminant Soil (ppm) Water (ppm) <br /> Before After Before After Before After Before After <br /> TPH (Gas) 2700 <1 68 .48 Ethyl-benzene 68 <.005 2.2 .00063 <br /> TPH (Diesel) NA NA NA NA Xylene 330 <.005 13.0 .0012 <br /> Benzene 20 .058 1.8 .0094 TBA .044 <10 1.2 .062 <br /> Toluene 91 <.005 6.4 .0012 MTBE 1.2 .33 9.2 .27 <br /> 1,2-DCA NA NA NA <.001 Lead-TTLC 8.9 NA .14 NA <br /> Comments: NA= not analyzed. <br /> Soil Before results are from soil samples collected 3-3-98 when the UST's were removed. Soil After <br /> results are from GPI-20-22' on 5/11/98. Groundwater Before results are from the grab water sample collected when <br /> the UST's were removed. Groundwater After results are from monitoring well KF3 on 8/21/03. <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 /> Have the MonitoringNapor wells been decommissioned? YES Number Decommissioned: 7 Number retained: 0 <br /> List enforcement actions-taken: NOR-April 28, 1994 <br /> List enforcement actions rescinded: n/a <br /> V. Local Agency Representative Data <br /> Name: Donna Heran Title: Director of Environmental-Health <br /> Signature: Date: 0 Lf <br /> VI. Central Valley Regional Water Quality Control Board RB Notification <br /> Date Submitted to RB: 10/30/2003 Response Date: 11/07/2003 <br /> RB Staff: James L. L. Barton Response: Concurrence with NFA <br /> Title: Engineering Geologist <br /> VII. Additional Comments, Data,etc. <br /> Groundwater contamination present at time of UST removal was remediated by the adjacent UST site's corrective <br /> action (groundwater extraction-SVE)to very low concentrations. Any 'co-mingling'of the two sites plumes that <br /> were present in 1994 appears to have been 'drawn' back to the adjacent site from the 1999-2001 aggressive GWE. <br /> Only slight residual petroleum remains at Kwikee and other remediation would not be cost-effective. <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 /> M 1/-5/04 <br />