The city’s water treatment plant will get significant upgrades to fix a chemical leak this winter
after the city council voted Aug. 6 to upgrade the plant’s caustic soda and compressed air system
and provide system redundancy.
“Caustic soda is a hazardous chemical used for pH adjustment” that tends to leak when pipelines
reach the end of their lifespan, which is typically about 15 years, said Dylan Carey, a civil
engineer with Keller Associates.
As a result, pipelines in Fernley’s 16-year-old water treatment facility are leaking the chemical,
“which is hazardous to touch,” Carey told the council while showing a photo of an in-ground
chemical vault in the water treatment plant’s yard, where a couple of rungs of a metal ladder
leading into the vault had been eroded away by the chemical.
According to the report by Keller Associates provided to the council, “the caustic soda system is
currently offline due to extensive leaks and failing components.” But, to include future surface
water intake to the treatment plant, as is anticipated, “there is a need to improve the pH
adjustment and reliability of the micro-filtration process,” Carey said.
The proposal brought before the council by Keller Associates includes replacing all leaking pipes
and adding a second air receiver and a third air compressor for reliability. The work would be
done in the winter, when demand at the water treatment plant is lower.
Carey said an extra air compressor is needed because when surface water treatment is added to
the plant’s capacity, demand may exceed what the current compressors are able to provide. He
said redundancy is also necessary for flexibility during downtime when it is necessary to
complete repairs on any compressor or tank.
“This is the only water treatment facility in Fernley, so it is critical that it remain operational,”
Carey said.
Responding to Councilwoman Felicity Zoberski’s question of how this unbudgeted item would
be funded, Seong Kim, the city’s utilities manager, said there is $4 million in the city’s fund for
water treatment improvement projects that can be used.
The city staff report on this item also noted this project had been moved to the top of the city’s
Capital Improvement Project list. Following the presentation, the council unanimously approved
a contract with Keller Associates for $807,100 for the design, preparation of bid documents and
construction of the improvements to the city’s water treatment plant.
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