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Exhibit N Page 1 of 2 1 <br /> Case Closure Summary Page 2 <br /> Leaklug 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) ND ND 84 84 Xylene ND ND 1.3 1.3 <br /> TPH (Diesel) Ethylbenzene ND ND .32 .32 <br /> Benzene ND ND .08. .08 Oil & Grease <br /> Toluene ND ND .11 .11 Heavy metals <br /> Other lOther <br /> Comments (Depth of Remediation, etc.) : <br /> A contaminated grab water sample, and non detectable contamination in the soil samples, <br /> indicate that an unknown amount of petroleum hydrocarbons were accidently introduced <br /> to the excavation during the removal process. <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 /> none <br /> Should corrective action be reviewed if land use changes? Yes (No) <br /> Monitoring wells Decommisioned: Yes No Number Decommisioned: Number Retained: <br /> List enforcement actions taken: <br /> NOTICE OF REIMBURSEMENT <br /> List enforcement actions rescinded: <br /> NONE <br /> V. Local Agency Representative Data <br /> Name: DONNA HERAN Title: DIRECTOR OF ENVIRONMENTAL HEALTH <br /> Signature: L Date: <br /> VI. RWQCB Notification <br /> Date Submitted to RB: RB Response: <br /> RWQCB Staff Name: Title: Date: <br /> VII. Additional Comments, Data, etc. <br /> i <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 /> I <br />