The City of Ann Arbor, Michigan, began implementing a citywide footing drain disconnection (FDD) program in October 2001. This program began by addressing areas of the city that have experienced trouble with basement backups due to sanitary sewer capacity constraints under wet weather
conditions. In these areas, backflow prevention measures are also being installed. The initial phase of the project included a footing drain flow monitoring program to assess efficacy of the FDD method and to prioritize the remainder of the city as the program extends beyond the areas with
basement backup problems. The various aspects of this project discussed herein include: information management, footing drain flow monitoring, footing drain disconnection, and curb drain construction. Non-technical aspects of the project are also briefly discussed, such as funding, ordinance
development, and the role of the advisory committee. Results are presented in terms of financial costs, approximate treatment cost savings, and construction requirements such as staffing, disruption, and competition.
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