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Leakir , Underground Fuel Storage Tank <br /> ogram <br /> Palisades Gas & Wash #835 (Case#2) page 2 <br /> 2705 Country Club Blvd, Stockton CA. <br /> San Joaquin County <br /> III Release and Site Characterization Information continued July 21, 2011 <br /> Maximum Documented Contaminant Concentrations - Before and After Cleanup <br /> Contaminant Soil (ppm) Water (ppm) Contaminant Soil (ppm) Water (ppm) <br /> Before After Before After Before After Before After <br /> TPH (Gas) <4. <1. 16.600 <2.0 Ethylbenzene <0.02 0.007 0.0165 <.0005 <br /> TPH (Diesel) NA NA 0.14 <0.05 Xylene <0.02 0.0078 0.0365 <.0005 <br /> Benzene <0.02 0.061 0.344 0.011 MTBE 3.2 0.380 54. 0.44 <br /> Toluene 1<0.02 1 <.005 1 0.0255 1<0.0005 ITBA 1170. 19.1 1200. 123. <br /> Comments: No remediation conducted during Case 2 operations. Soil data 'before' from CPT-2 and <br /> CPT-3 (2005) and soil "after"from MWA 1 to MW-21 installations (2007). Groundwater`before' data from <br /> VEW-3 from 03/12/2002. Groundwater"after" from VEW-3 on either April 5, 2011 or March 17, 2009 <br /> Isampling events. <br /> IV. Closure <br /> Does completed corrective action protect existing beneficial uses per Regional Board Basin Plan? yes <br /> Does completed corrective action protect potential beneficial uses per 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 Monitoring/Vapor wells been decommissioned? yes, VEW-2 Number Decommissioned: 1 <br /> Number retained: 23 <br /> List enforcement actions taken: NOR: July 31, 2002 (Palisades) and June 18, 2007 (Tesoro). <br /> List enforcement actions rescinded: n/a <br /> V. Local Aqency Representative Data <br /> Name: Adrienne Ellsaesser, REHS Title: Acting Program Coordinator <br /> Sig atur • ,. Date: 7b-,d111 <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 /> This is Case #2 for this location and started July 31, 2002. See Case #1, Geotracker ID#: <br /> T060770052 for data from 1991 to July 30, 2002. <br /> This document and the related CASE CLOSURE LETTER shall be retained by the lead agency as part of <br /> the official site file. <br />