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Case Closure Summary Page 2 _ <br /> Leaking Underground Fuel Storage TQ Program' <br /> III Release and Site Characterization Information (continued) <br /> Maximum Documented Contaminant Concentrations -_Before and After Cleanup r <br /> Contaminant Soil (ppm) Water (ppm) Contaminant Soil (ppm) Water <br /> (Ppm) <br /> Before After Before After°i Before After Before After <br /> TPH(Gas) 4,100 <9,100 2.749 <.05 Xylene 430 <430 .328 <.0005 ' <br /> TPH(Diesel) NIA NIA NIA NIA i# Ethylbenzene 48 <48 .061 <,0005 <br /> Benzene 1.8 <1.8 .435. <,0005 Oil&Grease NIA NIA NIA NIA <br /> Toluene 15 <15 .113 <,0005 'Heavy Metals NIA NIA NIA NIA <br /> i MTBE <br /> Comments: RESIDUAL SOIL CONTAMINATION EXISTS 35' -40' BGS NEAR MW#2 WITH NO CURRENT IMPACT TO <br /> GROUNDWATER. ALL MWs CURRENTLY NO; NO OXYGINATES EVIDENCED IN GROUNDWATER. <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: (YES) Number Decommissioned: 6 Number retained: 0 <br /> List enforcement actions taken:. <br /> List enforcement actions rescinded: LEVEL ONE,NOR SENT TO RESPONSIBLE PARTY <br /> V. Local Agency Representative Data <br /> Name: DONNA RERAN Title: DIRECTOR OF ENVIRONMENTAL HEALTH <br /> Signature: Date, <br /> VI. Central'Valley Regional Water Quality Control Board (RB) Notification = . <br /> Date Submitted to RB: 7 i�` Response Date: 1( olls - <br /> RB Staff. MARK LIST Response: <br /> Title: ENGINEERING GEOLOGIST e o n C�rf2.n L� I <br /> Vil: Additional Comments, Data, etc. w . <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 />