Bolton Reservoir has been deemed 'seismically deficient' by the city

In a step toward replacing the city’s century-old Bolton Reservoir, the West Linn City Council voted unanimously Monday night to approve a $1,080,957 project design contract with Murray, Smith & Associates.

The work included as part of the contract includes project management, conditional use approval, preliminary engineering, the reservoir’s final design and construction administration, among other items. The Portland-based Murray, Smith & Associates previously worked with West Linn to construct the Rosemont Reservoir.

“They are the premier provider of these kinds of services in the area,” Public Works Director Lance Calvert told the council.

Beginning the process to replace the Bolton Reservoir was listed as one of the City Council’s top goals for 2014. In his annual State of the City address last February, Mayor John Kovash said “(The reservoir) is old, it is deteriorating and it needs to be replaced — and we will do that.”

As part of the Lake Oswego-Tigard Water Partnership project, West Linn received a $5 million payment from Lake Oswego to be used for the Bolton Reservoir project.

Located on Skyline Drive up the hill from West Linn High School, the 2.5 million gallon Bolton Reservoir has been deemed “seismically deficient” and “undersized” by the city. In the reservoir’s current condition, 500,000 gallons are unusable due to outlet piping and the level of the reservoir’s floor. The new reservoir would hold 4 million gallons.

In total, the city estimates the reservoir will cost $9 million to replace. In addition to the $5 million from LOT, $2 million will come from the water fund balance and another $2 million from water system development charges.

Moving forward, the city expects to complete the project’s design and accept a construction bid by the fall of 2015. If all goes according to plan, the new reservoir would be in place by the spring of 2017.

City Manager Chris Jordan has noted, however, that the timeline is contingent on the LOT being completed on schedule, with the intertie between LOT and West Linn up and running.

By Patrick Malee
503-636-1281 ex
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