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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 (PPB) Contaminant Soil (ppm) Water (PPB) <br /> Before After Before After Before After Before After <br /> TPH (Gas) 14.0 <1.0 ---- ---- Xylene <0.01 <0.01 ---- ---- <br /> TPH (Diesel) ---- ---- ---- ---- Ethylbenzene <0.01 <0.01 ---- ---- <br /> Benzene 0.0086 <.005 ---- ---- Oil & Grease ---- ---- ---- ---- <br /> Toluene <0.01 <.005 ---- ---- Heavy metals 0.008 ---- ---- ---- <br /> EDB 0.00027 <1.0 ---- ---- Other ---- ---- ---- ---- <br /> Comments (Depth of Remediation, etc.) : <br /> TANK REMOVAL IN 1989 SHOWED EVIDENCE OF CONTAMINATION. THE SOIL BORING DRILLED IN <br /> 1994 INDICATED THE CONTAMINATION REPORTED IN 1089 TO BE LIMITED OR NOT PRESENT. NO <br /> FURTHER ASSESSMENT REQUIRTED. <br /> IV. Closure <br /> Does completed corrective action protect existing beneficial uses per the Regional Board <br /> Basin Plan? YES <br /> Does completed corrective action protect potential beneficial uses per the Regional Board <br /> Basin Plan? YES <br /> Does corrective action protect public health for current land use? YES <br /> Site management requirements: NONE <br /> Should corrective action be reviewed if land use changes? NO <br /> Monitoring wells Decommisioned: N/A Number Decommisioned:-- Number Retained: -- <br /> List enforcement actions taken: INITIAL DIRECTIVE LETTER <br /> List enforcement actions rescinded: NONE <br /> V. Local Agency Representative Data <br /> Name: DONR HERAN Title: DIRECTOR, ENVIRONMENTAL HEALTH DIVISION <br /> Signature: 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 /> 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 />