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7 30 July 2004 AGE-NC Project No 96-0232 Page 15 of 16 • In accordance with Work Plan Addendum (dated 14 April 2004), dual-completion ground water monitoring well MW-19(A and B)was installed off-site on 14 May 2004, the well is located approximately 265 feet northeast of well MW-8 on the north side of Banner Avenue - The well was developed on 20 May 2004 and surveyed for elevation and GPS coordinates on 10 June 2004 A report of findings that details the procdures for the well installation is in the process of being prepared, AGE anticipates the report of findings will be completed by 15 August 2004 One additional ground water monitoring well is warranted between Flag City Chevron wells MW-8 and MW-19, the well should have independent screen intervals through hydrogeologic units First Water Zone and Second Water Zone AGE has contacted the adjacent property owner (McDonald's Corporation) to the north at 6440 West Banner Avenue, and requested permission to install one dual-completed ground water monitoring' well Mr Dave Lamm (Senior Site Acquisition Manager) of McDonald's Corporation previously stated that installation of one groundwater monitoring well on the property would be acceptable However,Mr Lamm subsequently contacted AGE by email stating that there is some concern by McDonald's Corporate attorney(s) are concerned that if contamination is found on McDonald's property, then McDonald's Corporation may potentially be held liable for the clean-up This last correspondence was dated 18 June 2004, AGE has not received further correspondence regarding approval from McDonald's Corporation since 18 June 2004 As noted above, a total of 26,200,733 gallons of MTBE-impacted ground water has been treated at the site since the start-up period in November 2000 (Table 8), during this time, a total of 12 98 pounds of MTBE was removed from MTBE-impacted ground water AGE has provided the = following summary of annual cost for MTBE removal • November 2000 and November 2001 (1 t year of operation)-a total of 9 15 pounds of MTBE was removed at an average pump-and-treat (PT) influent concentration of 209 }tg/l, based on approximately$115,000 spent on 1St year of PT operation and maintenance,than the cost rate was roughly$12,500 for every pound of MTBE removed • December 2001 and November 2002 (2°d year of operation) - a total 1 37 pounds of MTBE was removed at an average PT influent concentration of 21 µg11, based on approximately $70,000 spent on 2nd year of PT operation and maintenance,than the cost rate was roughly $51,000 for every pound of MTBE removed • December 2002 and November 2003 (3rd year of operation) - a total 1 88 pounds of MTBE was removed at an average PT influent concentration of 31 µg/l, based on approximately $52,000 spent on 3rd year of PT operation and maintenance, than the cost rate was roughly . $27,500 for every pound of MTBE removed Advanced GeoEnvironmental,Inc