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THE CITY OF CITY COUNCIL AGENDA REPORT pi .-EASANTON January 18, 2022 Operations Services TITLE: APPROVE A PROFESSIONAL SERVICES AGREEMENT WITH WOODARD AND CURRAN FOR THE NOT-TO-EXCEED AMOUNT OF $509,227 FOR DEVELOPMENT OF THE SEWER COLLECTION SYSTEM HYDRAULIC MODEL, CAPACITY EVALUATION AND RELATED STUDIES, CIP NO. 16245 SUMMARY The City Sewer Utility collection system includes 252 miles of pipe, 11 lift stations, and eight siphons. The complex nature of the collection system makes it necessary to use computer modeling to accurately assess the system capacity and performance. In this project staff is proposing to develop a hydraulic model of the collection system. The City last developed a similar hydraulic model in 2007, however, since then modeling technology has advanced and there have been significant changes in the collection system configuration necessitating the need for a new model. This project is included in the City Council Priorities Work Plan. Once the new model has been developed and calibrated, it will be used to evaluate the capacity of the City's existing sewer system. If warranted, capital improvement projects will be recommended to address capacity shortfalls within the system. The model will also be used to identify infrastructure improvements needed to meet future growth, evaluate new or improved operational strategies, and assess the impacts of unique development projects. Staff recommends award of a contract to Woodard & Curran, Inc. to develop a working GIS-based hydraulic model, conduct a capacity evaluation of the existing system and conduct other related studies. RECOMMENDATION Approve and authorize the City Manager to execute a professional services agreement with Woodard & Curran for development of a hydraulic model, capacity evaluation and related studies, for a not-to-exceed amount of $509,227. FINANCIAL STATEMENT The anticipated total expenditure for this project is $509,227, which includes a 10 percent contingency of $46,293 for unforeseen circumstances and related extra services as determined to be necessary by the City. Current funding for the project is available from the Sewer Capacity Evaluation Project, CIP No. 16245.