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R <br /> Case Closure Summary Page1,.� <br /> Leaking Underground Fuel Storage Tank Program <br /> III Release and Site Characterization Information (continued) <br /> 7Documentedented Contaminant Concentrations --Before and After Cleanup <br /> Soil (ppm) Water (ppm) Contaminant Soil (ppm) Water (ppmBefore After Before After Before After Before After <br /> 1200 19.0 6.8 0.970 Xylene 270 3.8 0.500 <0.002NA NA NA NA Ethylbenzene 45.0 0.37 0.029 <0.0020.86 0.058 0.280 0.0014 Oil&Grease NA NA NA NA27.0 0.41 0.027 <0.002 Heavy Metals Pb 55 Pb unk NA NA <br /> MTBE unk <0:02 0.0005 <0.002 <br /> Comments: <br /> The soil before concentrations are from soil sample SS-8 collected at 2.5 feet beneath product piping at the time of UST <br /> removal. The soil after concentrations are from confirmation soil sample SL-2 at 3 feet after soil excavation. The water <br /> before (4/10/2003)and after(1/26/2010) concentrations are from MW 1. On 1/26/2010 MW 1 also contained: 24 ug/L TBA, <br /> 22 ug/L 1,2DCA, 44 ug/L PCE, and 210 ug/L TCE. <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: <br /> Should corrective action be reviewed if land use changes?Yes <br /> Monitoring/Vapor wells Decommissioned: No Number Decommissioned: 0 Number retained: 8 <br /> List enforcement actions taken:. NOR sent to RP <br /> List enforcement actions rescinded: <br /> V. Local Agency Representative Data <br /> Name: Adrienne Ellsaesser Title: Acting Program Coordinator REHS <br /> Signature: Date: <br /> VI. Central Valley Regional Water Quality Control Board RB Notification <br /> Date Submitted to RB: Response Date: <br /> RB Staff: J. Barton Response: <br /> Title: Eng. Geologist <br /> VII. Additional Comments, Data, etc. <br /> This is LOP CASE#2. LOP CASE#1 was closed August 19, 1991 as soil only. <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 />