Laserfiche WebLink
Case Closure Summary <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 (ppm) <br /> Before After I Before After Before After Before After <br /> TPH (Gas) 2,800 NA 180 10 Xylenes 290 NA 22 1.3 <br /> TPH (Diesel) NA NA NA NA MTBE 0.036 NA 1.3 0.24 <br /> Benzene 24 . NA 27 2.9 1,2-DCA X0.005 NA X0.0005 0.049 <br /> Toluene 120 NA 29 0.81 EDB X0.005 NA X0.0005 X0.0005 <br /> Ethyl benzene 151 1 NA 3.7 10.17 Lead 112 1 NA INA NA <br /> Comments: The `Soil Before'concentrations for TPH (gas), benzene, toluene, ethylbenzene, total xylenes, 1,2-DCA, and <br /> EDB are from sample P2-5 @ 5 feet on 05102102, MTBE from MW-1-10 @ 10 feet on 05/27103, and lead from Line#5 @ 4 <br /> feet on 12107192. 'Soil After' concentrations were not collected. The`Groundwater Before' concentrations for TPH (gas), <br /> benzene, toluene, ethylbenzene, total xylenes, MTBE, 1,2-DCA and EDB are from P-2 on 05/02102. 'Groundwater After' <br /> concentrations for TPH (gas), benzene, toluene, ethylbenzene, total xylenes, MTBE, 1,2-DCA and EDB are from MW-1 on <br /> 09/02111. NA—not analyzed <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: No Number Decommissioned: 0 Number retained: 11 <br /> List enforcement actions taken: NOR on 09/27/01 <br /> List enforcement actions rescinded: None <br /> V. Local P enc Re resentative Data <br /> Name: Adrienne Ellsaesser, REHS Title: Program Coordinator <br /> Signature: Date: y/i <br /> /3 <br /> VI Central Valley Regional Water Quality Control Board RB Notification <br /> Date Submitted to RB: Response Date: <br /> RB Staff: James L.L. Barton Response. <br /> Title: Engineering Geologist <br /> VII. Additional Comments, Data, etc. <br /> Remediation has not been performed to mitigate the residual adsorbed and dissolved groundwater at this site. <br /> This document and the related CASE CLOSURE LETTER shall be retained by the lead agency as part of the official site-file. <br /> Page 2 <br />