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S"001 sfte-I <br /> Case Closure Summary Page 2 <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 Before (ppm) <br /> Before After Before I After Before After After <br /> TPH (Gas) 2000 NA 100 0.92 Xylene 210 NA 38.0 <0.001 <br /> TPH (Diesel) 58.0 NA 45J 8.0 Toluene 9.1 NA 7.2 <0.0005 <br /> TPH (motor oil) 13.0 NA NA NA 1,2-DCA <0.011 NA 0.13 0.055 <br /> Benzene 4.7 NA 13.7 <0.0005 MTBE <0.005 NA 0.35 0.029 <br /> Ethybenzene 119.0 NA 5.0 <0.0005 Lead (Pb) <5.0 NA NA NA <br /> Soil Before: TPHg from tank removed at 14 ft bsg.,from sample#1,tank#1-West on 12/22/89. <br /> TPHd from tank removed at 11' 9"bsg,from samle#1,tank#2-East on 1/3190. <br /> TPH(motor oil)from tank removed at-8 ft bsg,from sample#3, tank 3 on 5/10/88. <br /> Benzene and Ethylbenzene from well installed at 50 ft bsg from AS-1 on 4/13/10. <br /> Xylene and Tolune from vapor well installed at 46 ft bsg fromVW2-09 on 1131/96. <br /> 1,2-DCA from well installed at 53 ft bsg from OW-2 on 4/13/10. <br /> MTBE from well installed at 61ft bsg from MW12-12 on 1/30196. <br /> Lead(Pb)from sample ID 111368-009(composite sample)on 4/20/10. <br /> Soil After: No soil after results. <br /> Groundwater Before: TPHg from OW-2 on 4/19/10 <br /> TPHd and Xylene from CPT-4 on 4/12/10. <br /> TPH(mo)and Lead(Pb)not analyzed. NA= Not analyzed. <br /> Benzene from MW-1 on 6/1/94. <br /> Ethylbenzene from OW-3 on 4/19/10. <br /> Toluene from MW-1 on 7/2/96 <br /> 1,2-DCA from OW-1 on 5/4/10. <br /> MTBE from VW-2 on 1/3/08. <br /> Groundwater After: TPHg from MW-13 on 1/29/13. <br /> TPHd from MW-19 on 1/28/13 <br /> TPH(mo)and Lead (Pb)not analyzed. NA= Not analyzed. <br /> Benzene, Ethylbenzene, Xylene,Toluene and 1,2 DCA from MW-14 on 1/28/13. <br /> MTBE from VW-2 onl/29/13. <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 /> Monitoring/Remediation Wells Decommissioned? Yes Number Decommissioned: 25 <br /> Number retained: 0 <br /> List enforcement actions taken: NOR: 4/1/1992 <br /> List enforcement actions rescinded: None <br /> V. Local Agency Representative Data <br /> Name: Donna Heran, REHS Title: Director <br /> Signature: Date: 9/2/2014 <br />