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EXHIBIT A <br /> BURNS\MS DONNE LL <br /> 3. <br /> Based on manhole invert and rim elevations, sewer connectivity,and industrial influent locations, <br /> identify risk and potential for odor migration <br /> The City(or their contractors/consultant)will perform the following work: <br /> 1. Obtain, install, and collect the data from the pH/temperature/ORP probe over a 8-week period. <br /> Transmit data to BMcD for analysis and evaluation. <br /> 2. Obtain daily samples from wastewater stream over a 8-week period. Deliver samples to <br /> laboratory. <br /> 3. Install and collect data from OdaLogs at manholes 37-100 and 40-155 over a 8-week period. <br /> Transmit data to BMcD for analysis and evaluation. <br /> 4. Set data collection parameters for the Odalogs and probe shall be set to the same frequency(e.g. <br /> 5-minute intervals, 15-minute intervals, etc.), as recommended by BMcD. <br /> 5. Contract with laboratory to perform the laboratory analysis. <br /> After BMcD has evaluated the data,we will meet with the City in a workshop to present the data and <br /> discuss potential alternatives,which will include: <br /> 1. Evaluate data at two(2)week intervals to determine if sufficient data has been obtained in order <br /> to understand the odor profile. <br /> 2. Inlet/catch basin improvements(repairing half traps, catch basin rehabilitation with Gunite,etc.) <br /> 3. Chemical treatment <br /> 4. Air treatment with carbon filters <br /> 5. Life cycle cost analysis of the proposed alternatives <br /> Deliverables: <br /> Coordination Meeting Minutes <br /> Workshop Meeting Minutes <br /> TASK 5: REPORT <br /> BMcD will prepare a single report that will identify potential pipeline and manhole rehabilitation methods <br /> that will be considered, including cured-in place pipe lining,slip lining,formed-in-place pipe liners,pipe <br /> replacement,concrete and cementitious sprays, folded thermoplastic pipe, grouting, spot repairs,manhole <br /> replacement, "Mr. Manhole" frame replacement, cementious lining,and other technologies that the City <br /> may wish to consider. Also included in the report will be a summary of the data received from Task 4, as <br /> well as our evaluation and odor analysis. BMcD`s report will: <br /> • Summarize the manhole and sewer condition assessment and associated PACP/MACP ratings <br /> with appropriate figures and tables <br /> • Summarize and evaluate rehabilitation alternatives in terms of cost, feasibility and application <br /> • Summarize the minimum requirements for applying for an IEPA SRF loan, as well as other <br /> important loan issues to consider <br /> • Summarize and analyze the data obtained from Task 4,providing recommendations for the next <br /> phase of the odor control project <br /> • Perform a life cycle cost analysis of various odor control alternatives <br /> • Provide a recommendation(s) for the rehabilitation alternatives <br /> • Provide an Engineer's Opinion of Probable Construction Costs for the recommended <br /> alternative(s) <br /> After the City has the opportunity to review and comment on the draft report,BMCD will incorporate any <br /> City comments and submit the final report for the City's use. <br /> 200 W.Adams Street\Suite 2700\Chicago, IL 60606 A-4 <br /> 0 630-724-3200\F 312-223-0920\burnsmcd.com <br />