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st Case Closure Summary Page 2 <br /> Leaki'- Underground Fuel Storage Tank gram <br /> III. Release and Site Charai rization Information (continued, ' <br /> Maximum Documented Contaminant Concentrations--Before and After Cleanup <br /> Contaminant Soil (ppm) Water (ppm) Contaminant Soil <br /> Before After Before After (Ppm) Water (ppm) <br /> Before After Before After <br /> TPH (Gas) ND ND ND ND Xylene ,010 <br /> TPH (Diesel) 80 ND .4 ND Sthylbenzene PID .010 ND ND <br /> Benzene ND ND ND ND Oil & Grease 350 ND ND ND <br /> Toluene 006 .OQ6 ND ND ND ND <br /> Other ND ND ND ND OthHeaer metals DFD ND <br /> ND ND <br /> ND ND ND ND <br /> Comments (Depth Of Remediation, etc.) ; <br /> RESIDUAL SOIL CONTAMINATION IS ESTIMATED AT 11 MG TOLUENE AND 18 MG OF XYLENE. <br /> IV. Closure <br /> Does completed corrective action protect existing beneficial uses per the Regional Board <br /> Basin Plan? (Yes) No <br /> Does completed corrective <br /> Basin Plan? (Yes) No action protect potential beneficial uses per the Regional Board <br /> Does corrective action protect public health for current land use? (Yes) NO <br /> i <br /> Site management requirements: NONE <br /> Should corrective action be reviewed if land use changes? Yes (No) <br /> Monitoring wells Decozmnisioned: (Yes) No Number De' <br /> coumisioned: i Number Retained: 0 <br /> List enforcement actions taken: NOR <br /> List enforcement actions rescinded: <br /> F <br /> V. Local Agency Representative Data <br /> ii <br /> Name: DONNA BRAN Title: DIR$CTdR OF ENVIRONMENTAL HEALTH 3 <br /> Signature: i <br /> Date: <br /> VI. RWQCB Notification r <br /> Date Submitted to R$; RB Response: ` <br /> RWQCB Staff Name; <br /> Title: Date: <br /> VII. Additional Comments, Data, etc. <br /> i <br /> f <br /> This document and the related CASE CLOSORE LETTER, ShalE1 be retained by the lead agency <br /> as part of the official site file. (08/24/93) <br /> Exhibit N Page 2 of 2j !!! <br />