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Case Closure Summary 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 <br /> Before After Before After Before After Before After <br /> TPH (Gas) 511 7 2.04 <.05 Xylene 143 .8 .018 <.0005 <br /> TPH (Diesel) 200 <10 <.5 <.5 Ethylbenzene <.02 .512 <.0005 <br /> Benzene 12.6 .2 .282 <.0005 Oil & Grease <br /> Toluene 35.8 .39 <2.5 <.0005 Heavy metals <br /> Other Other <br /> Comments (Depth of Remediation, etc.) : <br /> Excavation of contaminated soil occurred 02/21/90 to a depth of 12 feet <br /> below grade. <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: None <br /> should corrective action be reviewed if land use changes? Yes (No) <br /> Monitoring wells Decommisioned: (Yes) No Number Decommisioned: 5 Number Retained: <br /> List enforcement actions taken: NOR sent 6/29/89. <br /> List enforcement actions rescinded: <br /> V. Local Agency Representative Data <br /> Name: Donna Heran Title: Director Environmental Health <br /> Signature: i�_ Date: <br /> VI. RWQCB Notification <br /> Date Submitted to RB: 11/13/92 RB Response: Concurrance letter 3/1/94 <br /> RWQCB Staff Name: E. Thayer Title: Asso. Engineer Date: 3/1/94 <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 <br />