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Case Closure Stmmmry Page 2 <br /> Leaking Underground Fuel Storage Tank Program <br /> III. Release and Site Characterization 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) 8228 ND NA NA Xylene 538 ND NA NA <br /> TPH (Diesel) 472 ND NA NA Ethylbenzene 105 ND NA NA <br /> Benzene 23 ND NA NA Oil & Grease ND ND NA NA <br /> Toluene 170 ND NA NA Heavy metals NA NA NA NA <br /> Other NA NA NA NA Other NA' NA NA NA <br /> Comments (Depth of Remediation, etc.) : SOIL EXCAVATED FROM IDENTIFIED CONTAMINATED AREAS <br /> IN FORMER DESPENSER ISLAND LOCATION. SOIL RESULTS WERE BELOW DETECTION LIMITS IN <br /> ALL CONFIRMATION SAMPLING FROM FINAL EXCAVATION LIMITS. <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 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: 3 Number Retained: 0 <br /> List enforcement actions taken: FIRST LEVEL; NOR/SITE LETTER <br /> List enforcement actions rescinded: <br /> V. Local Agency Representative Data <br /> Name: DO!!"RAN Title: DIRECTOR OF ENVIRONMENTAL HEALTH <br /> Signature: F Date: <br /> VI. RWQCB Notification <br /> E <br /> ubmitted to RB: 02/10/92 RB Response: <br /> Staff Name: S THAYER Title:ASSOC ENGINEER Date: <br /> VII. Additional Comments, Data, etc. <br /> 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 /> lam""`,rx.• <br />