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• BO L—TON 8� M B N K , I N C® <br /> Consulting Engineers & Surveyors <br /> 12224 NicolletAvenue • Burnsville, MN 55337 <br /> Phone (952)890-0509 • Fax(952)890-8065 <br /> www.bolton-menk.com <br /> April 10, 2014 <br /> Mr. Justin Femrite, P.E. <br /> City Engineer <br /> City of Elk River <br /> 13065 Orono Parkway <br /> Elk River, MN 55330 <br /> RE: Elk River WWTF <br /> WWTF Improvements Project <br /> Project No.: T21.106811 <br /> Dear Mr.Femrite: <br /> The purpose of this letter is to detail the scope change for the wastewater treatment improvements project <br /> and request additional engineering fees for these changes. <br /> As you are aware,the original scope of the project included a different design for both the liquid and <br /> biosolids portions of this project. The main liquid stream changes include repurposing the primary <br /> clarifiers for biological phosphorous removal and utilizing an extended aeration activated sludge process <br /> for the entire biological treatment process. These changes are similar in scope to our original design <br /> scope and because of this we are not requesting any additional fees for the liquid stream changes. <br /> The original biosolids scope included pumping the biosolids to Great River Energy(GRE)for use in the <br /> GRE system. The improvements for the original scope and the costs associated with this option are <br /> detailed below. <br /> Original Cost Estimate and Fees for <br /> Great River Energy Biosolids Option <br /> Item Cost <br /> Site Work/Site Piping $150,000 <br /> Pumps $125,000 <br /> Sludge Storage Aeration Equipment $175,000 <br /> Electrical/Controls $90,000 <br /> Total Construction Cost $540,000 <br /> Contingency $54,000 <br /> Engineering Fee per Agreement $82,045 <br /> Total Project Cost $676,045 <br /> GA\Elk River\T21106811\1_CorresVemrite ltr 10apr2014.docx <br /> DESIGNING FOR A BETTER TOMORROW <br /> Bolton&Menk is an equal opportunity employer <br />