The Electron Powerhouse uses the Puyallup River to produce 26 megawatts of power. This is a 2009 photo of the powerhouse. Photo by Steven Pavlov / https://commons.wikimedia.org/wiki/User:Senapa / CC BY-SA 4.0

The Electron Powerhouse uses the Puyallup River to produce 26 megawatts of power. This is a 2009 photo of the powerhouse. Photo by Steven Pavlov / https://commons.wikimedia.org/wiki/User:Senapa / CC BY-SA 4.0

Following river pollution, state fines owners of dam in east Pierce County

Electron Hydro, LLC is paying for discarded plastic sports turf that ended up in the Puyallup River

  • Wednesday, June 16, 2021 2:38pm
  • News

Note: The following is a press release issued by the state’s Department of Ecology.

The Washington Department of Ecology has fined Electron Hydro, LLC $501,000 for discharging discarded plastic sports turf into the Puyallup River last summer.

The material broke away from an in-stream construction site in eastern Pierce County in late July. Pieces of sports turf were found up to 21 miles downstream. Deposits of ground-up tire rubber – used as padding for the turf – were believed to extend to the river’s mouth and possibly into Commencement Bay in Tacoma, 41 miles downstream.

The turf and its crumb rubber padding material are toxic when ingested by fish and other aquatic life. Puyallup River steelhead, bull trout and chinook, a critical food source for southern resident orcas, are all protected under the Endangered Species Act.

“These toxic materials had no place in the river,” said Ecology Director Laura Watson. “The force of the water tore the turf apart, washed it down river, and sent it right into the food web. This is an environmental tragedy that didn’t have to happen.”

Electron Hydro produces electricity by diverting water from the river near Orting in eastern Pierce County. The water flows 10 miles through an elevated flume then back to the river through a powerhouse.

Last summer, the company started construction to replace its diversion dam and water intake structure, built in 1903. The work included building a temporary bypass channel to divert the river away from the construction area.

As part of a lining for the bypass channel, Electron Hydro installed large sheets of discarded sports turf. The company had not requested authorization to use that material when it obtained permits for the construction from Pierce County, the Army Corps of Engineers, the Washington Department of Fish and Wildlife, and Ecology. Plastic liner was placed on top of more than 2,400 square yards of the sports turf and crumb rubber.

The river was diverted into the bypass channel on July 28, 2020. Soon after, river rocks that shifted in the flow breached the liner and discharged about 617 square yards of sports turf and an estimated 4-6 cubic yards of crumb rubber downstream.

Electron Hydro did not report this release to Ecology or the other permitting agencies. A citizen reported to Ecology on July 30 about the use of sports turf and crumb rubber in the river. The company later informed Ecology that it had begun cleaning turf materials from the river and shorelines, and reported early in its cleanup that it had placed 13,000 pounds at a landfill.

After large sections tore away in July, the remaining portion of liner and turf at the construction site were left in place until the river was returned to its main channel on Oct. 25. Pieces of exposed sports turf continued to discharge into the river during that time.

In addition to penalties associated with the release of sports turf and Construction Stormwater Permit violations, Ecology is issuing an Administrative Order to address ongoing water quality violations related to Electron Hydro operations. Corrective actions required include:

• A Water Quality Management Plan that addresses the issues of sediment, warm water temperatures, and toxic substances;

• A Hydroelectric Operations Water Quality Monitoring Plan for all waters influenced by the project;

• Immediate compliance with all conditions associated with the construction of the barrier dam and water intake structure; and

• The submission of an annual Water Quality Monitoring Report.

Water quality penalty payments to Ecology are placed into the state’s Coastal Protection Fund, which provides grants to public agencies and tribes for water quality restoration projects. Electron Hydro may appeal the penalty, the order, or both to the Washington State Pollution Control Hearings Board.


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