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High-tech wastewater reclamation plant on Cowlitz Reservation nears completion

LA CENTER — The state-of-the-art wastewater treatment facility being built on the Cowlitz Indian Reservation near La Center is more than halfway toward its completion and expected to be online by March 1, 2017.

The state-of-the-art wastewater treatment facility being built on the Cowlitz Indian Reservation near La Center is more than halfway toward its completion and expected to be online by March 1, 2017. Photo by Mike Schultz
The state-of-the-art wastewater treatment facility being built on the Cowlitz Indian Reservation near La Center is more than halfway toward its completion and expected to be online by March 1, 2017. Photo by Mike Schultz

Once complete, the water reclamation plant will be able to treat between 70,000 and 100,000 gallons of wastewater per day and serve the ilani casino-resort, which is expected to open in April of 2017. Eventually, the plant will serve a hotel and convention center — both part of the ilani casino-resort project — and the Cowlitz Indian Tribe’s new headquarters.


Michael Ollivant, a project design and consulting engineer with Parametrix, Inc., the company designing the water reclamation plant, said earlier this year that the new wastewater treatment plant is “a very robust system” that exceeds the minimum requirement for the Environmental Protection Agency’s wastewater permitting process.

 

Parametrix has designed similar projects throughout Washington, including the Nisqually Indian Tribe’s environmentally conscious, “zero waste” plant, which Cowlitz Indian Tribe Chairman Bill Iyall says is the “sister project” to the Cowlitz tribe’s water reclamation facility.

 

Using membrane technology, the plant essentially takes wastewater back to drinking water standards before injecting the clean water 120 feet into the ground via a Class V injection well, where the water will pass through even more filtration before entering the groundwater system.
Ollivant says the technology at the Cowlitz wastewater treatment plant is “very advanced” and at a level that is “much higher than most municipalities have.”

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About The Author

Kelly Moyer has been reporting for community newspapers since the mid-1990s, including the Newport News-Times on the Oregon Coast; the Lewistown Sentinel, a daily newspaper in central Pennsylvania; the Gresham Outlook, Wilsonville Spokesman, Sherwood Gazette and South County Spotlight newspapers in the Portland metro area; and The Reflector newspaper in Battle Ground, Wash. She also is the former managing editor of Midwifery Today, an international magazine for birth professionals. Kelly, a University of Oregon alumnus and Pennsylvania native, lives with her family in Northeast Portland.

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