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Ken Herceg & Associates <br />A Division of Donohue & Associates, Inc. <br />100 N. Michigan St., Suite 510 <br />South Bend, IN 46601 <br />574,288.4580 1 donohue-associates.com <br />September 21, 2015 <br />Ms. Jessica Clark, PE <br />County Engineer <br />City -County Building, 71h Floor <br />227 W. Jefferson Blvd. <br />South Bend, Indiana 46601 <br />Re: DRAFT Opinion of Probable Cost and Sewer Capacity Analysis <br />St. Joseph Energy Center Infrastructure Improvements <br />Dear Ms. Clark: <br />In accordance with the Task Order No. 3 executed on August 24, 2015, Donohue I Herceg and Associates <br />(Donohue) is hereby pleased to submit to you the following report regarding the development of an <br />Opinion of Probable Cost for the proposed St. Joseph Energy Center (SJEC) well field, water treatment <br />plant (WTP) and associated infrastructure. In addition, this report also includes the analysis results of <br />the capacity that will remain in the sanitary sewer recommended in 2002, given the SJEC has recently <br />reported wastewater flow of 340,000 gallons per day (gpd). <br />OPINION OF PROBABLE COST <br />The Opinion of Probable Cost for the construction of the SJEC WTP, associated well field and the <br />"Infrastructure Improvement Projects Supporting Energy Center Development" are based on the <br />compilation, analysis and consideration of previous information, including: <br />• Technical Specification -- Greensand Filtration System, by Power Engineers/Burns and Roe <br />(6/19/15) <br />• July 2002 Bid Totals received by St. Joseph County for the "Infrastructure Improvement Projects <br />Supporting Energy Center Development" project, updated to 2016 dollars <br />In addition, information discussed during the September 3, 2015 technical meeting held on the 71h Floor <br />of 100 N. Michigan Street in South Bend was also used in developing the probable costs included with <br />this document. <br />The development of the Opinion of Probable Cost for the new WTP and associated well field started <br />with the development of an initial conceptual layout. Discussion and coordination with SJEC have <br />resulted in the determination that the proposed WTP and associated well field will be roughly located in <br />the southeast quadrant of the SJEC property (refer to Exhibit A). In addition to identifying the <br />approximate location of the proposed wells, transmissions mains and WTP, the conceptual layout also <br />