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• Case Closure Summary Page 2 <br /> Leaki Underground Fuel Storage Tank ' gram <br /> III. Release and Site Chara"rization Information (continuecxJ <br /> Maximum Documented Contaminant Concentrations--Before and After Cleanup <br /> Contaminant Soil (ppm) Water (PPB) Contaminant Soil (ppm) Water (PPB) <br /> Before After Before After Before After Before After <br /> TPH (Gas) 6,600. <1.0 ---- ---- Xylene 540.0 <.005 ---- ---- <br /> TPH (Diesel) ---- ---- ---- ---- Ethylbenzene 73.0 <.005 ---- <br /> Benzene 4.9 <.005 ---- ---- Oil & Grease ---- ---- ---- --- <br /> Toluene 98.0 <.005 ---- ---- Pb (sol)mg/l <1.0 ---- ---- ---- <br /> Other I lOther EDB 0.52 <0.01 <br /> Comments (Depth of Remediation, etc.) : <br /> BULK OF IMPACTED SOIL REMOVED BY OVER-EXCAVATION. ALL CONFIRMATION SOIL SAMPLES SHOWED <br /> NONDETECTABLE RESULTS. ****SOIL ONLY**** ****SOIL ONLY**** ****SOIL ONLY**** <br /> ****SOIL ONLY**** ****SOIL ONLY**** <br /> IV. Closure <br /> Does completed corrective action protect existing beneficial uses per the Regional Board <br /> Basin Plan? YES <br /> Does completed corrective action protect potential beneficial uses per the Regional Board <br /> 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? NO <br /> Monitoring wells Decommisioned: N/A Number Decommisioned:-- Number Retained:-- <br /> List enforcement actions taken: INITIAL DIRECTIVE LETTER <br /> List enforcement actions rescinded: NONE <br /> V. Local Agency Representative Data <br /> Name: MARGARET LAGORIO Title:SUPERVISING REHS/ENVIRONMENTAL HEALTH DIV <br /> Signature: Date: <br /> VI. RWQCB Notification <br /> Date Submitted to RB: RB Response: NA <br /> RWQCB Staff Name:W. CROOKS Title:EXEC OFFICER Date: <br /> VII. Additional Comments, Data, etc. <br /> *****SOIL ONLY***** *****SOIL ONLY***** <br /> This document and the related CASE CLOSURE LETTER, Shall be retained by the lead agency <br /> as part of the official site file. (08/24/93) <br /> Exhibit N Page 2 of 2 <br />