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Leaking Underground Fuel Storage Tank Program <br /> III Release and Site Characterization Information (continued) <br /> Maximum Documented Contaminant Concentrations - -Before ind After Cleanup <br /> Contaminant Soil (ppm) Water (ppm) Conlaminant Soil (ppm) Water (ppm) <br /> Before After Before After Before After Before After <br /> TPH (Gas) 15,000. 3.8 7.4 0.5 Ethyl-benzene 250. <0.005 0.004 <0.0005 <br /> TPH (Diesel) Xylene 1400. 0.0087 0.0065 <0.0005 <br /> Benzene 48. <0.005 0.00051 <0.0005 <br /> Toluene 590 <0.005 <0.0005 <0.0005 <br /> MTB 3.9 10.0081 10.0016 1<0.0005 <br /> Comments NOTE: GROUNDWATER RESULTS IN PARTS PER M LLIONI <br /> NO REMEDIATION HAS BEEN PROPOSED OR CONDUCTED FOR GROUNDWATER. ONLY ISLAND/DISPENSER <br /> OVER-EXCAVATION CONDUCTED JANUARY 1998 DURING UPDATE OF UST SYSTEM AND DONE UNDER EHD <br /> OVERSIGHT AND APPROVAL. <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? NOT YET Number Decommissioned: 0 Number retained: 3 <br /> List enforcement actions taken: NORR, 3128198 <br /> List enforcement actions rescinded: NONE <br /> I <br /> V. Local Agency Representative Data <br /> Name: Donna Heran 1 Margaret Lagorio Title: Director of Environmental Health I LOP Supervisor <br /> Signature: Dat <br /> i <br /> VI. Central Valley Regional Water Quality Control Board (RB) Notification <br /> Date Submitted to RB: Response Date: <br /> RB Staff: Mark List Response: <br /> Title:. Engineering Geologist <br /> VII. Additional Comments, Data. etc. <br /> I <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 /> Mil 8/99 <br /> 1 <br />