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Wastewater Treatment Division staff are prepared to respond to a variety of complaints and incidents related to the regional wastewater conveyance and treatment system including addressing odor complaints, sewer spills, storm-related problems, and other incidents.

Recent incident responses are listed below.

WTD employees continue to support South Park residents affected by storm-related backups

Location: South Park

Updates:

Wednesday, February 22

King County WTD is continuing work to support residents affected by wastewater backups in about 11 homes in Seattle's South Park neighborhood. The backups occurred during the large February 9 storm that affected West Point Treatment Plant. An equipment malfunction in the County's system at the Eighth Avenue regulator pushed stormwater and wastewater back into the local system and into nearby homes.

King County is providing assistance to residents and addressing property damage. The County's contractors are cleaning and sanitizing homes. Real estate staff are assisting tenants with housing needs including temporary accommodations in local hotels. One family has already returned home. Assistance is being provided to residents with claim forms for structural damage and lost possessions. Affected residents are also getting assistance to cover food and personal item costs while they are displaced. Staff are working with contractors to ensure unoccupied homes are left secure at the end of each day.

West Point Treatment Plant

Location: West Point Treatment Plant, Seattle

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Frequently Asked Questions – West Point Incident  (Updated February 23, 2017)

For questions or inquiries related to the West Point incident, please do not call the West Point Treatment Plant.

Contact us:

Updates:

Friday, February 24

Progress continues to be made at King County’s West Point Treatment Plant, where people are working 24 hours a day to restore the plant to full wastewater treatment capacity as soon as possible. Weather forecasts are calling for only light precipitation over the next several days, and emergency bypasses of highly diluted stormwater and wastewater from the plant are unlikely. View news release.

  • West Point currently has capacity of providing limited wastewater treatment to roughly 250 million gallons per day, which is nearly twice the capacity needed to safely treat all of the stormwater and wastewater the plant receives on an average day for this time of year.
  • No bypass events of stormwater and wastewater have occurred since Feb. 16, and dry weather conditions make a bypass unlikely over the weekend.
  • Crews are scheduled to work around the clock this weekend to complete cleanup of below-grade levels of the treatment plant, which are currently used for mechanical parts storage.
  • Two teams of eight mechanics each are rehabilitating motors and pumps throughout the treatment plant. Motor replacement installation is currently at 85 percent completion.
  • Electrical demolition and assessment is 55 percent complete plant-wide. Crews are draining and cleaning conduits throughout the facility, and the temporary heaters and blower systems that have been installed will help expedite this methodical work.
  • King County engineers are working on the design and replacement of electrical panels, and consulting engineers are assisting in electrical restoration throughout the plant.
  • Heating, ventilation and cooling demolition work continues. Plant restoration leaders noted that these systems sustained significant damage throughout flooded portions of the treatment plant.
  • The public and the media were notified.
Thursday, February 23

5:30 p.m. update:

The work to restore full operations at the West Point Treatment Plant continues at maximum staffing levels around the clock. Light precipitation expected over the next several days suggests no emergency bypasses of stormwater and wastewater will be necessary from the treatment plant in the near term. View news release.

  • No emergency bypasses of stormwater and wastewater have occurred since Feb. 16.
  • The probability of a bypass over the weekend is low. Weather forecasts predict little or no chance of precipitation Friday, with rain/snow showers expected Saturday and Sunday.
  • West Point currently has capacity of providing limited wastewater treatment to roughly 250 million gallons per day. This is nearly twice the capacity needed to safely treat all of the stormwater and wastewater the plant receives on an average day for this time of year.
  • Notable progress on treatment plant restoration continues as employees work around the clock. Work is being done carefully and methodically, with employee and contractor safety as the top priority.
  • Additional cleaning and sanitizing is needed in the lowest below-grade levels of the treatment plant, which are currently used for mechanical parts storage. Plant managers plan to bring in 50 to 100 more workers this weekend to complete the work as soon as possible.
  • Two teams of eight mechanics each are rehabilitating motors and pumps throughout the treatment plant.
  • Electrical demolition and assessment is at 55 percent complete plant-wide. Temporary heaters, blowers and ventilation systems have been installed in the tunnels where a wide array of electrical and mechanical equipment is located. These temporary systems will help dry out the tunnels to expedite electrical restoration activities.
  • King County engineers are working on the design and replacement of electrical panels, and consulting engineers are assisting in electrical restoration throughout the plant.
  • The media and the public were notified..
Wednesday, February 22

4:30 p.m. update:

Workers continue to make steady progress in restoring full operations at the West Point Treatment Plant – and a favorable weather forecast for only light showers through the end of the week means there should be no need for additional emergency bypasses during that time from the treatment plant. View news release.

  • No emergency bypasses since Feb. 16.
  • Weather forecasts predict light precipitation over several days, meaning additional bypasses are unlikely.
  • Wastewater treatment is continuing at the plant, including screening, some solids settling and disinfection.
  • Crews have cleaned and sanitized about 95 percent of the treatment plant, and nearly all work will be completed by the end of the day on Wednesday, Feb. 22.
  • Electrical and mechanical workers have been entering cleaned and sanitized areas as they come available to assess damage, and restore or replace damaged equipment.
  • Employees and contractors continue working on electrical and mechanical systems, including removing and rehabilitating pump motors. About 50 percent of this work has been completed.
  • Workers continue cleaning and dewatering electrical conduits throughout the plant, and additional equipment has been brought in to help dry areas where heavy condensation can slow electrical assessments.
  • King County engineers are working on the design and replacement of electrical panels, and consulting engineers are assisting in electrical restoration throughout the plant.
  • The public and the media were notified.

Water quality monitoring sampling data (2/9 - 2/21) . Sampling locations: near West Point in Discover Park, Golden Gardens, and Carkeek Park.wp-and-north-sample-sites

Tuesday, February 21

2:40 p.m. update: Discovery Park and Golden Gardens beaches are now open. View news release.

  • Crews have cleaned and sanitized about 95 percent of the treatment plant, and this work is scheduled to be completed by Wednesday, Feb. 22.
  • Beaches were reopened at Golden Gardens and Discovery Park.
  • Employees and contractors continue working on electrical and mechanical systems, including removing and rehabilitating pump motors, in cleaned areas of the plant. About 50 percent of this work has been completed.
  • Electrical and mechanical workers have been entering cleaned and sanitized areas as they come available to assess damage, and restore or replace damaged equipment.
  • King County engineers are working on the design and replacement of electrical panels, and consulting engineers are assisting in electrical restoration throughout the plant.
  • The current weather forecast through the end of the workweek calls for scattered showers and low precipitation totals that are well below the 24-hour rainfall threshold that might trigger an emergency bypass.
  • The public and the media were notified.
Monday, February 20

6:00 p.m. update (revised):

King County employees and contractors continue making progress around the clock on restoration work at the West Point Treatment Plant. View news release.

  • No emergency bypasses since Feb. 16. Current weather forecast calls for scattered showers and precipitation totals below the 24-hour rainfall threshold that might trigger an emergency bypass.
  • About 65 workers are on site doing restoration activities including cleaning, inspection, and pulling contaminated equipment. Cleaning is on schedule for completion on Feb. 21.
  • About 50 percent of the work on electrical and mechanical systems, including removing and rehabilitating pump motors, is complete.
  • Engineers are working on the design and replacement of electrical panels, and consulting engineers are assisting in electrical restoration throughout the plant.
  • Water quality sampling continues along beaches north and south of the lighthouse at Discovery Park and at Golden Gardens Park. Signs will be removed once bacteria levels are determined to be low by the Public Health - Seattle & King County.

Water Quality Monitoring Update and sampling data (2/9 - 2/18) . Sampling locations: near West Point in Discover Park, Golden Gardens, and Carkeek Park.

Sunday, February 19

5:00 p.m. update (revised):

King County employees and contractors continue making progress around the clock on restoration work at the West Point Treatment Plant, and no emergency bypasses of highly diluted stormwater and wastewater have occurred at the plant since early on Thursday, Feb. 16. View news release.

  • No emergency bypasses have occurred at the plant since early on Thursday, Feb. 16.
  • Rainfall amounts of one inch or more during a 24-hour period in Seattle could lead to an emergency bypass. Plant managers are carefully watching weather forecasts for Monday, Feb. 20.
  • Crews cleaned and sanitized 80 percent of the treatment plant. In areas that have already been cleaned and sanitized, they’ve conducted damage assessments as part of developing a restoration plan for the treatment plant.
  • King County continues to monitor daily basis progress in effort to set a target restoration date.
  • About 35 percent of electrical and mechanical work, including removing and rehabilitating engines, has been completed.
  • Beach closure signs remain posted north and south of the lighthouse at Discovery Park, and at Golden Gardens Park. Signs will be removed once bacteria levels are determined to be low by the Public Health - Seattle & King County.
  • King County engineers continue working on the design and replacement of electrical panels, and consulting engineers are assisting in electrical restoration throughout the plant.
  • Public and media notified with information and updates.

Water Quality Monitoring Update . Sampling locations: near West Point in Discover Park, Golden Gardens, and Carkeek Park.

Saturday, February 18

5:00 p.m. update:

Restoration work continues around the clock at the West Point Treatment Plant, which is treating wastewater. No emergency bypasses are anticipated under current weather forecasts for the next 24 hours. View news release

Water Quality Monitoring Update . Sampling locations: near West Point in Discover Park, Golden Gardens, and Carkeek Park.

Friday, February 17

3:30 p.m. update:

Water Quality Monitoring Update. Sampling locations: near West Point in Discover Park, Golden Gardens, and Carkeek Park.

Thursday, February 16

4:30 p.m. update

West Point Treatment Plant has not bypassed flows since 6:30 a.m. Feb 16 since heavy rain subsided. The plant was in partial emergency bypass mode from 4 p.m. Feb. 15 to 6:30 a.m. Feb. 16. We do not yet have volume estimates for that period at this time.

We continue to operate the facility at about 50 percent of normal capacity, and are able to provide primary treatment for about 250 million gallons a day.

We’ve transitioned from cleanup and sanitization, followed by damage assessment, to detailing what repairs are needed as part of our recovery plan.

We already know that we need to replace more than 200 pump engines within the facility, and more than 100 various electrical panels. This list is likely to grow.

We also know that full restoration of the plant is likely at least several weeks away. Until that time, we will continue to carefully operate the facility in a safe manner, maximizing our ability to redirect flows to satellite treatment facilities.

Wednesday, February 15

Heavy rains early Wednesday morning, Feb. 15, caused a partial bypass of combined wastewater and stormwater flows to Puget Sound at the West Point Treatment Plant. The plant is operating at about 50 percent capacity since a storm last week led to a power failure and flooding in portions of the facility. View news release.

Tuesday, February 14

Water Quality Monitoring Update . Sampling locations: near West Point, Golden Gardens, and Carkeek Park.

Monday, February 13

Water Quality Monitoring Update . Sampling locations: near West Point, Golden Gardens, and Carkeek Park.

Saturday, February 11

Water Quality Monitoring Update . Sampling locations: near West Point, Golden Gardens, and Carkeek Park.

Friday, February 10

3:45 p.m. update: King County crews are working to resume normal wastewater treatment operations at the West Point Treatment Plant after an equipment failure during a heavy rainstorm led to a shutdown at the facility early on Thursday, Feb. 9. View February 10, 2017 news release.

Water Quality Monitoring Update (revised) . Sampling locations: near West Point, Golden Gardens, and Carkeek Park.

4 a.m. update: Major emergency response efforts are continuing at King County’s West Point Treatment Plant.

Wastewater flows continue to be sent through the treatment plant and are no longer being discharged through the emergency bypass system. Flows going to Puget Sound are disinfected. Water quality monitoring is ongoing.

Some wastewater flows are still being diverted to other County facilities for treatment to ensure systematic, safe restoration of equipment function at West Point Treatment Plant. Flows may be restored to West Point later this morning.

King County will continue providing updates as work to restore full operations at West Point continues.

Thursday, February 9

9 p.m. update: Major emergency response efforts are restoring wastewater treatment operations at King County’s West Point Treatment Plant.

Wastewater flows are now being sent through the treatment plant and are no longer being discharged through the emergency bypass system.

Some wastewater flows are still being diverted to other County facilities for treatment to ensure systematic, safe restoration of equipment function at West Point Treatment Plant.

5 p.m. update: King County has mobilized crews and equipment to respond to flooding at the West Point Treatment Plant, which experienced an equipment shutdown early on Thursday, Feb. 9. Plant managers are diverting as much flow as possible to other treatment plants in the regional system. West Point continues operating in emergency bypass mode. View updated (5 p.m.) February 9, 2017 news release.

Morning update: King County’s West Point Treatment Plant experienced an equipment shutdown early on Thursday, Feb. 9, while receiving maximum inflows of combined wastewater and stormwater and during very high tides that threatened to flood the treatment plant. The plant is currently operating in emergency bypass mode until the equipment can be put back into normal operation. View February 9, 2017 news release

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