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Mr. Nile Fellows <br /> April 3, 1990 <br /> Page 2. <br /> The February 15, 1990 project cost of $70,900 incorporates a $5,800 <br /> contingencies item not included in the original estimate of $50,660. Due to <br /> the very nature of replacement work, it is advisable to include this addition <br /> amount to cover any unforeseen problems should they occur. Thus, the <br /> increase cost of the ventilation system, the increase motor size, and its related <br /> reduced voltage starter and addition service capacity necessitated by the new <br /> GAC facilities, have expanded the original scope of the project and the <br /> related engineering and construction cost. <br /> We hope that the amended increased expenses can be approved expeditiously <br /> so the work can be completed prior to the start-up of the permanent GAC <br /> facility. If you have any further questions, please contact me at our <br /> Minnetonka office. <br /> Yours truly, <br /> RIE CARROLL MULLER ASSOCIATES, INC. <br /> Charles S. Barger, P.7 <br /> CSB/jj <br /> c: Larry Hamer <br /> • <br />