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=.� Case Closure Summary Page 2 <br /> Leaking Undergxound Fuel Storage Tank Program <br /> III. Release and Site Characterisation 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 /> TPS (Gas) 10,000 1.7 Xylene 850 ND <br /> TPS (Diesel) Sthylbenaene 150 ND <br /> Benzene 41 ND oil a Grease <br /> Toluene 430 ND Heavy metals <br /> Other L Other <br /> Comments (Depth of Remediation, etc.) : <br /> overexcavation of former tank area to 17 ft. , most contaml ation removed and <br /> groundwater not impacted <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: nose <br /> should corrective action be reviewed if land use changes? Yes (No) <br /> Monitoring wells Decomini.stoned: (Yes) No Number Decommisioned: 3 Number Retained: 0 <br /> List enforcement actions taken: NOR sent 12/12/89 <br /> List enforcement actions rescinded: <br /> V. Local Agency Representative Data <br /> Name: Donna Heran Title: Director Environmental Health <br /> Signature. '�.��� Date: <br /> VI. RWQCB Notification <br /> Date Submitted to RB: RB Responses <br /> RWQCB Staff Name: (Title: Date: <br /> VII. Additional Comments, Data, etc. <br /> Soil only, groundwater investigation conducted with no impact <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 /> r �j <br />