Just got word from the King County Wastewater Treatment District that this afternoon’s power outage caused a ~330,000-gallon overflow from the 63rd Avenue Pump Station in South Alki. The pump station usually sends stormwater and wastewater flows to the Alki Combined Sewer Overflow facility at Alki Point. That facility has an emergency generator on site, and the county says crews brought that generator to the pump station, but it wasn’t needed for long, since the outage lasted less than an hour.
… King County has reported the overflow to health and regulatory agencies. King County employees will post signs in the vicinity of the pump station at first light on Friday, Feb. 17, and employees with the County’s Environmental Lab conducted water quality monitoring.
The Alki facility itself had a quarter-million-gallon overflow just four weeks ago.