Laserfiche WebLink
t I <br /> Case Closure Summary Page^ <br /> aking Underground Fuel Storage Tank PA...jram <br /> 11l Release and Site Characterization Information (continued) <br /> i <br /> FMaximumcumented ContaminantConcentrations --Before and After Cleanup <br /> Soil (ppm) Water (ppm) Contaminant. Soil (ppm) Water (ppm) <br /> Before After Before After Before After Before After <br /> 15000 560 120 x0.05 Xylene 1900 8.8 7.9 x0.0005 <br /> TPH(Diesel) NA NA NA NA Ethylbenzene 970 6.7 2.8 X0.0005 <br /> Benzene 3.1 0.45 29 x0.0005 Oil&Grease NA NA NA NA <br /> Toluene 910 2.0 18 x0.0005 Heavy Metals x0.5 Pb NA NA NA <br /> MTBE NA x0.05 0.160 0.0013 <br /> Comments: The soil before concentrations are from soil boring ASB-1 (except Heavy Metals-Pb from the 1990 tank removal <br /> soil results); soil after concentrations are from confirmation soil boring CB-1. Both ASB-1 and CB-1 are within 10 feet of the <br /> former UST in the source area. The ground water before concentrations and the ground water after concentrations are from <br /> VE-3 screen 25-45 feet bsg)20 feet down-gradient of the former UST. <br /> IV. Closure <br /> ,i <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: NA for current use <br /> Should corrective action be reviewed if land use changes?Yes <br /> Monitoring/Vapor wells Installed: 14 Number Decommissioned: 14 Number retained: 0 <br /> List enforcement actions taken: Level one, NOR sent to the RP <br /> List enforcement actions rescinded: NA <br /> V. Local Agency Representative Data <br /> Name: Donna Heran, REHS Title: Director <br /> Signature: Date: ] 1-3— <br /> VI. Central Valley Regional Water Quality Control Board RB Notification <br /> Date Submitted to RB: Response Date:August 6, 2010 <br /> RB Staff: Jim Barton Response: No Further Action Required Concurrence <br /> Title: Engineering Geologist <br /> VII. Additional Comments, Data, etc. <br /> IF- <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 /> .l <br />