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I <br /> k Case Closure Summary Page 2 <br /> Leaking Underground Fuel Storage Tank Program ` <br /> III. Release and Site Characterization Information (continued) <br /> i <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) 3400 ND .55 ND Xylene 290 ND .014 ND <br /> TP H (Diesel) NA NA NA NA Ethylbenzene 53 ND .094 ND <br /> Benzene 11 ND .11 ND Oil & Grease 640 ND ND ND <br /> Toluene 44 ND .001 ND Heavy metals ND ND ND ND <br /> Other ND ND ND Other ND ND ND ND <br /> Comments (Depth of Remediation, etc.) : <br /> 3 UST'S WERE REMOVED, CONTAMINATED SOIL EXCAVATED AND DISPOSED. <br /> CONFIRMATION SAMPLING OF SOIL AND GROUNDWATER WAS BELOW DETECTION LIMITS <br /> IV. Closure <br /> Does completed corrective action protect existing beneficial uses per the Regional Board <br /> Basan Plan? (Yes) No <br /> Does completed corrective action protect potential beneficial uses per the Regional Board <br /> Basin Plan? (Yes) No <br /> Does corrective action protect public health for current land use? (Yes) No <br /> Site management requirements: <br /> Should corrective action be reviewed if land use changes? (Yes) No <br /> Monitoring wells Decommisioned: (Yes) No Number Decommisioned: 5 Number Retained: 0 <br /> List enforcement actions taken: <br /> List enforcement actions rescinded: <br /> V. Local Agency Representative Data <br /> Name: DONNA HERAN Title: DIRECTOR OF ENVIRONMENTAL HEALTH <br /> Signature: /-y�Jy,�_ Date: <br /> VI. RWQCB Notification <br /> Date Submitted to RB: RB Response: <br /> RWQCB Staff Name:E THAYER Title.-ASSOC ENGINEER Date: <br /> VII. Additional Comments, Data, etc. <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 6 <br />