On February 18, 2014, the applications for the Historic Resource Review (LU 13-236792 HR) and Environmental Review (LU 13-240530 EN), described below, were withdrawn by the applicant.
On December 20, 2013, the Portland Water Bureau submitted an application for work on Mt Tabor. The application was deemed complete on January 16, 2014. A Notice of Type II Proposal was mailed on January 24, 2014 detailing the proposal and work subject to Historic Resource Review (LU 13-236792 HR) and Environmental Review (LU 13-240530 EN). Written comments are due by 5 p.m. on March 10, 2014.
The Portland Water Bureau (PWB) proposes to disconnect Reservoirs 1, 5, and 6 from the city’s drinking-water system and construct new piped connections, valves, and other appurtenances on site that will allow continued operation of the water system without the use of the reservoirs. The locations of the various work elements are shown on the attached exhibits. There will be several types of disconnection work. Some of the disconnections will take place inside vaults or other structures. Other disconnections will require excavation of pipe, removal of a section, and covering the pipe ends. In addition, all inlets and most of the outlets in the reservoirs and weir buildings will be capped. Only the lowest outlets or drains, which allow the reservoirs to drain to the sewer system, will remain uncapped.
New pipe connections will be constructed south of Reservoir 1 between Conduits 2 and 4 and between Conduits 3 and 4. In addition, a new pipe will be laid between Conduit 3 and a large distribution main in SE Lincoln Street west of the park. This pipe will follow SE Lincoln Drive inside the park, then cut west across the off-leash dog area to where it enters the SE Lincoln Street right-of-way at the west boundary of the park. In order for the water system to function properly, PWB will also install isolation valves, air valves, meters, telemetry and cathodic protection equipment. The PWB will also install an emergency generator and a Variable Frequency Drive (for an existing pump motor) in one of the existing structures.
Because the proposed reservoir projects occur on Mt. Tabor, a Historic Landmark, and in the Mount Tabor Park Reservoirs Historic District; and because some of the projects will occur within the City’s Environmental Conservation overlay zone, both Historic Resource Review and Environmental Review are required. Please see the Notice of Proposal for additional details and identification of what work is subject to Historic Resource Review and what is subject to Environmental Review, and the drawings for the project.
For questions about the Historic Resource Review, contact Hillary Adam (503-823-3581 / Hillary.Adam@portlandoregon.gov) and for questions about the Environmental Review, contact Stacey Castleberry (503-823-7586 / Stacey.Castleberry@portlandoregon.gov).