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REV: 04-04-25 LR <br />desktop study and inspection plan is to consolidate key information for each force main that would <br />be needed for the City, consultants, and vendors to accomplish the following in a practical and <br />efficient visual manner: <br />Understand and discuss what existing infrastructure is in place. <br />Understand the known condition and performance issues associated with the existing <br />force mains. <br />Understand existing access constraints and distances for comparing against available <br />inspection technologies deployment and retrieval needs, and inspection length <br />capabilities. <br />Ability to use force main maps to plan for and define future force main rehabilitation <br />program. <br />Develop Engineer’s Estimate of Probable Cost (planning level estimate, AACE <br />International Level 5) for recommended field testing at each force main. <br />The Consultant will review record drawings and operations and maintenance data to develop a <br />list of recommended locations for field testing. These will likely include high points, other high-risk <br />areas where pipelines may be especially subject to corrosion, or areas where breaks have <br />occurred in the past. This list will be summarized in a “Force Main Inspection Plan”, including <br />maps or other means of field locating the recommended locations for excavation, in-situ testing, <br />and CCTV inspection (by others). Force mains will be characterized by things like age, material, <br />location, geometry, soils, repair history, and pressure fluctuations, assuming this information is <br />provided to Woodard & Curran by the City. This will suggest how to prioritize inspections and will <br />provide insight into possible inspection methods (i.e.. CCTV, internal investigation methods, or <br />external testing) and frequency. The Consultant will prepare separate maps for each of the force <br />mains (31 total) and provide estimated cost of recommended field testing for each force main <br />studied. <br />Task 14.1 Deliverables: <br />Force Main Inspection Plan <br />Task 14.1 Assumptions <br />Separate maps will be prepared for each of the force mains (31 total). <br />City will provide relevant data regarding the force mains. At a minimum, this is expected to <br />include record drawings and maintenance records, but may include geotechnical reports and <br />flow and pressure data. <br />City plans to define future force main rehabilitation program after review of the “Force Main <br />Inspection Plan.” This could include hiring crews to excavate force mains at select locations, <br />per Woodard & Curran recommendations. The excavation work would be per separate <br />contract, as would be the work to assess force main condition, which is anticipated to include <br />non-destructive pipe wall testing and visual observation. <br />Woodard & Curran will not participate in field testing of force mains, design of bypasses, or <br />calculations for allowable pump station shutoff time. However, Woodard & Curran will provide <br />estimated cost of recommended field testing for each force main studied. <br />For force mains, if field testing is conducted, Woodard & Curran (per separate contract) will <br />review the results of pipeline testing performed by others and assess apparent force main <br />condition based on this data. Data is expected to include, at a minimum, photographic data <br />and in-situ pipe wall thickness. If data is inconclusive, Woodard & Curran may recommend <br />additional testing. If data conclusively demonstrates poor force main condition, Woodard & <br />Curran may recommend additional testing to determine the extent of the issue or may include <br />ATTY/AGR.2025/Amend. No. 2/Woodard and Curran (Page 10 of 13)