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, , � ' � ' r <br /> AGREEMENT FOR ENGINEERING DESIGN SERVICES <br /> FOR THE <br /> CITY OF DECATUR <br /> RIDGEWAY DRIVE -BAY SHORE DRIVE SANITARY S WER STUDY <br /> THIS AGREEMENT, made and entered into th'�sr�V�day of��` c`��:� 2002, by and <br /> between the CITY OF DECATUR, ILLINOIS, hereinafter referred to as the "CITY," and <br /> BAINBRIDGE, GEE, MILANSKI & ASSOCIATES, INC., 1670 South Taylorville Road, <br /> Decatur, Illinois 62521, hereinafter referred to as the "ENGINEER," covers professional <br /> engineering services in connection with the preparation of a sewer infiltration and inflow study <br /> hereinafter referred to as the "PROJECT". <br /> Said Project has been designated CITY PROJECT and includes the study ofexcess flow <br /> in a part of the South Shores Neighborhood which sewers axe tributary to the 12" sewer that <br /> discharges to the South Shores Interceptor north of Baywood Drive. <br /> THEREFORE, in consideration of these premises and of the mutual covenants herein set forth: <br /> THE ENGINEER AGREES: <br /> 1. To perform the following engineering services in a phased approach. <br /> a. Conduct flow and level monitoring of 3 key manholes to determine dry and wet <br /> weather flows. The flow meters shall be furnished by others. <br /> b. Record rainfall over the flow monitoring period to correlate increases in sewer flow <br /> with wet weather. <br /> c. Smoke test the sewers in the study area to locate inflow points. <br /> d. Estimate base line flow, peak infiltration rates and peak inflow rates. <br /> e. Calculate sewer capacity form City records. <br /> f. Review the recent videotapes of the sewers and summarize the condition of the <br /> sewers. <br /> g. If found to be needed, estimate the cost of a sewer rehabilitation program and project <br /> the reduction in infiltration and inflow. Compare the cost of UI removal to the cost <br /> of transporting and treating the added flow at the sewage treatment plant. The <br /> transport and treat alternative will include ways to increase sewer capacity. I <br /> h. Summarize our findings in a short report and recommend a program to eliminate <br /> sewer backups in the study area. <br /> BGM 02-074 ENG AGREE - 1 <br />