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The city’s 2012 Water System Plan indicated a need for additional water storage on the existing 435 Zone Highlands Reservoir to meet future demands from expected growth prior to buildout demands in 2071. The existing 435 Zone Highlands Reservoir has a nominal capacity of 2.0 MG; was built in 1960 and has reached its expected service life; and structurally vulnerable in a major seismic event. Benefits for the installation of a new Highlands Reservoir and water main improvements include improving operational flexibility, adding capacity and reliability to the city’s water system.
Council awarded the professional services agreement to RH2 Engineering, Inc., at its regular meeting on June 6, 2016, to provide necessary services for the Replacement of Highlands 435 Pressure Zone Reservoirs and Mains - Final Design and Bidding. The total agreement is in the amount of $1,123,964
The reservoir is located on a city-owned parcel at 3410 NE 12th Street in the Highlands neighborhood. The Highlands Reservoir Project consists of Phase 1 and Phase 2.
The estimated construction costs for both phases ranges from $19 million to $21 million. Project funding will be from the Water Utility Capital Improvements Program budget.
The project design is in progress. The city staff and design consulting team, RH2 Engineering Inc., are conducting construction ability reviews of the design construction plans and acquiring required project permitting. The city anticipates the construction of the new 6.3 MG Reservoir, Phase 2, will begin after the construction completion of the frontage and water main improvements, Phase 1. The expected project schedules and major milestones are as follows:
Ken Srilofung, P.E. Water Engineer 425-430-7247 ksrilofung@rentonwa.gov
Highlands-Reservoir-Vicinity-Map.pdf(PDF, 259KB)