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Private Sewer Lateral Relocation 2 June 20, 2011 Television inspection revealed severely damaged pipe line, separated joints and root intrusion. To reduce the potential of overflow in this sewer line and facilitate its repair, a new bypass line in Beverly Avenue from Dutton Avenue to Broadmoor Boulevard was constructed in 2008. This line diverts a large volume of flow originating upstream of this area (see Exhibit B). With the flow reduced, the damaged pipe can now be lined using construction methods that require very little trenching and minimize damage and disruption to private properties. For the pipeline between Dowling and Broadmoor Boulevards (See Exhibit A), backyard easements were acquired from those properties where none previously existed. Short portions of severely damaged pipeline were replaced (point repairs), and a liner system was installed to repair the entire length. The repair solution for the line segment between Dutton Avenue and Dowling Boulevard (the Dowling Triangle) is more complex because of broken and deformed pipeline located directly below the house at 325 Dowling Boulevard. The fact that the sewer line runs beneath the home, constructed in the 1920's, is likely due to subdivision and re -subdivision of the lots in the early 1900's. Since point repair is not a viable option for this property, another solution was necessary. A review of all feasible options confirmed that the only solution was to abandon the sewer line and provide alternate connection points to the nine affected properties that front Beverly Avenue and Dowling Boulevard. The necessity to abandon and relocate a sewer main is rare, pursued only when there is a clear and present risk to the public health and safety and when all other reasonable solutions have been exhausted. Staff s goal is always to implement repair solutions that minimize impacts to private property owners while remaining cost effective and efficient for the ratepayers. Recognizing the financial burden that the relocation of the sewer line would have on the Dowling Triangle property owners due to private sewer lateral relocation, staff sought an administrative procedure that would provide some relief to them. Working together, staff from the City Attorney's Office, Engineering and Transportation, Finance and Public Works Services developed a draft procedure based on legal and financial findings. After much work by the City Council Facilities Committee, Council approved an administrative procedure (Administrative Code Title 8 Section 11, attached) that covered all sewer relocation work throughout the area of the City within the City Sewer Enterprise area. To get a sense of the potential ratepayers' liability or exposure in relation to sewer main relocation, a preliminary analysis was performed. The City has approximately 23 miles of sewer main that are partially or entirely located on private property. Utilizing the City's GIS data and aerial photography to determine proximity of sewer lines to structures, approximately 500 residential properties could be impacted. As with recent pipeline repair between Dowling and Broadmoor Boulevards, detailed inspections, surveys, and analysis are required to determine if relocation is the only alternative.