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Case Closure Summary Page 2 <br /> Leaking %derground Fuel Storage Tank Pr am <br /> III. Release and Site Characilaization Information (continued) <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) 0 0 n/a n/a Xylene 0 0 n/a n/a <br /> TPH (Diesel) 0 0 n/a n/a Ethylbenzene 0 0 n/a n/a <br /> Benzene 0 0 n/a n/a Oil & Grease n/a n/a n/a n/a <br /> Toluene 0 0 n/a n/a Heavy metals n/a n/a n/a n/a <br /> Other n/a n/a n/a n/a Other n/a n/a n/a n/a <br /> Comments (Depth of Remediation, etc.) : <br /> OLD UGT SITE THAT HAD TWO STEEL UGT'S REMOVED PRIOR TO LOP AND EHD INVOLVEMENT. REPORT <br /> SENT IN DID NOT HAVE PIPING RESULTS AND SITE REMAINED "UNKNOWN" UNTIL LOP REVIEW DISCOV- <br /> ERED SITUATION AND SENT LETTER APRIL 1995. SOIL ND AT 151, 201 , AND 25' BGS. <br /> if <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: 0 Number Retained: 0 <br /> List enforcement actions taken: NONE <br /> List enforcement actions rescinded: N/A <br /> V. Local Agency Representative Data <br /> Name: Title: <br /> Signature: �- Date: 9, <br /> VI. RWQCB Notification <br /> Date Submitted to RB: AUGUST 30,95 RB Response: <br /> RWQCB Staff Name: Title: Date: <br /> VII. Additional Comments, Data, etc. <br /> Two soil borings, one in old tank pit and one in the pipe trench, confirmed that no <br /> unauthorized released had occurred. Laboratory results and detection limits were valid <br /> and accepted by EHD LOP staff. <br /> L__ <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 />