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Completed Spring 2017

Community celebration and facility tours -- June 10th

Thanks for joining the King County WTD to celebrate the completion of the Murray CSO Control Project on June 10! We would like to thank community members and project neighbors for their patience and understanding during construction.

1706_Murray-cso-celebration


The public staircase is now complete!The public staircase provides access between Beach Drive SW and Lincoln Park Way SW.

operations phase

24-hour emergency and odor reporting:

Contact West Point Treatment Plant at  206-263-3801.

Facility address

7018 Beach Dr. S.W., Seattle

Project location

murray_cso_SC_400

Back to the capital projects overview map .

See how public art at KCWTD facilities connects community to our system and the environment.

Project description

King County built a million-gallon underground storage tank across the street from Seattle’s Lowman Beach Park to reduce combined sewer overflows (CSOs). The tank stores excess stormwater and wastewater that would otherwise overflow into Puget Sound when the Murray Pump Station exceeds maximum capacity. Learn more about this project.

Project schedule

The Murray Wet Weather Facility began operating in November 2016. Project restoration was completed in spring 2017.

Photos

1702_landscaping_600Murray CSO Control Facility - view photos on flickr

Related information

Protecting Our Waters (Combined Sewer Overflow Control Program), King County

Find out if a CSO is occurring at Murray. King County maintains a real-time notification page so people can see whether CSO discharges are occurring.

This project is funded in part by:

Department of Ecology, State of Washington

Learn more

Protect public health

Like many cities around the country, the older parts of King County's wastewater system uses a single set of pipes to carry untreated sewage and stormwater to a treatment plant. To prevent sewer backups into homes and streets, the system includes safety valves called “combined sewer overflows” that route excess sewage and polluted stormwater flow directly into Puget Sound during storms. Although CSOs reduce potential exposure to untreated sewage, they pose significant public health concerns.

Clean up Puget Sound

The Murray Wet Weather Facility was built to reduce CSOs into Puget Sound. State regulations require no more than one untreated discharge per year on a long-term average. Prior to construction of the Murray Wet Weather Facility, the Murray Pump Station averaged five untreated CSO events per year, discharging 5 million gallons into Puget Sound off of Lowman Beach Park.

About the Murray Wet Weather FacilitySource: Spring 2017 newsletter

Murray CSO Control Facility Site Plan  —slide 3 from the Final Facility Design Presentation, December 11, 2012

The new facility features the following elements.

  • Property acquisition
  • An underground diversion structure located in Beach Drive Southwest 
  • A pipe connecting the diversion structure to the storage tank to convey peak flows during a wet weather event
  • An approximately 6,000 square foot underground storage tank across from Lowman Beach Park
  • Retaining wall to protect the existing hillside along the northeast, east, and south edges of the storage tank site
  • One story equipment facility including mechanical and electrical facilities, located above the storage tank 
  • Landscape restoration in Lowman Beach Park and above ground at the storage tank site
  • A green roof with viewing areas
  • Public walkway through the site with rain garden
  • 3,500 square foot public use space north of facility

 

Interpretive signs

There are three interpretive signs located on top of the wet weather facility.

King County protects our waters on rainy daysView high-resolution version .

Protecting waters across the regionView high-resolution version .

Managing stormwater at our facilitiesView high-resolution version .

Between October 2011 and December 2012, Lowman Beach Park neighbors and park users worked with local designers, environmentalists and community advocates to help the King County project team design a facility that fits in with the community. These discussions produced “common themes” for the design that reflected the community’s values for a safe, reliable facility. The common themes were:

  • Minimize the “industrial facility” feel
  • Encourage views of Puget Sound
  • Discourage through traffic on Beach Drive
  • Enhance continuous space between Lowman Beach park and the facility site

Public meetings

Saturday, June 10, 2017
10 a.m. to noon
Murray Wet Weather Facility
7018 Beach Dr. SW, Seattle

Community celebration & facility tours

King County is hosting a community event to celebrate the completion of the Murray CSO Control Project and to thank you for your continued patience during construction. King County speakers will address the community during a short program 10:30 a.m. View news release.

Stop by the celebration to:

  • Take a tour. We'll have guided tours of the site every half hour, including the control room inside the facility building (tours inside the building are limited to those ages nine and up)
  • Learn about how the facility and underground storage tank protect water quality and public health
  • Share your feedback about the project and construction process

Guided tours will begin at 10 a.m., 11a.m. and 11:30 a.m.

Handouts:

Saturday, October 11, 2014 10 a.m. to 2 p.m.
Lowman Beach Park

Murray CSO Control Project information session

You are invited to stop by Lowman Beach Park on Saturday October 11 to talk with a project team member about the latest on the Murray CSO Control Project. You can ask questions about the project and learn about what we’ve done so far as well as next steps for construction, including excavation, concrete pouring, and final restoration.

Wednesday, November 6, 2013
6:30–8:30 pm
Fauntleroy Church
9140 California Ave. S.W.
Seattle, WA

Pre-construction public meeting

Join us to take this opportunity to:

  • Meet and share concerns with the project team
  • Understand how the project protects public health and safeguards Puget Sound
  • Review the project schedule
  • Learn more about the project’s potential impacts to neighbors and park users
  • Discuss how the county project team will work with the community to reduce disruptions

Handouts/presentations and additional information

Tuesday, December 11, 2012
6:30–8:30 pm
Fauntleroy Church
9140 California Ave. S.W.
Seattle, WA

Design advisory group (DAG) meeting

Meeting goals:

  • Review 90% landscape and facility design
  • Discuss interpretative signage locations and content
  • Preview project’s next steps

Handouts/presentations and additional information

Thursday, September 27, 2012
6:30–8:30 pm
Fauntleroy Church
9140 California Ave. S.W.
Seattle, WA

Design advisory group (DAG) meeting

The group will be discussing site security, lighting, fencing, location of the facility’s odor control stack and learning more about potential impacts to the community during construction. DAG meetings are open to the public.

Handouts/presentations and additional information

Saturday, August 18, 2012
10 a.m.–3:30 p.m.
Lowman Beach Park
7071 Beach Drive Southwest
Seattle, WA

Fence art paint party—for the project site

You are invited to help paint the mural that will cover the Murray Combined Sewer Overflow (CSO) Control Facility construction site fence for at least the next year. The Nature Consortium’s teaching artist will be onsite to explain mural design and help painters get started. Materials and templates will be provided, but wear your painting clothes!

Handouts/presentations and additional information

Tuesday, July 17, 2012
6:30–8:30 p.m.
Fauntleroy Church
9140 California Ave. S.W.
Seattle, WA

Design advisory group (DAG) meeting

Meeting goals:

  • Review SDOT 60% design concept and remaining decisions
  • Discuss landscape and architecture design options
  • Meet the project artist and review art concepts
  • Discuss site fencing and art

Handouts/presentations and additional information

Thursday, May 10, 2012
6:30–8:30 p.m.
Fauntleroy Church
9140 California Ave. S.W.
Seattle, WA

Design advisory group (DAG) meeting

Agenda items include:

  • Review of SDOT meetings
  • Discussion on revised design concept
  • Public art process
  • Site security/building deconstruction

Handouts/presentations and additional information

Tuesday, March 20, 2012
6:30–8:30 p.m.
Fauntleroy Church
9140 California Ave. S.W.
Seattle, WA

Design advisory group (DAG) meeting

The group will be previewing the public art process, discussing the preliminary design to be shared with the City of Seattle Department of Transportation and reviewing the facility’s green building opportunities.

Handouts/presentations  and additional information

Monday, February 13, 2012
6:30–8:30 pm
Fauntleroy Church
9140 California Ave. S.W.
Seattle, WA

Design advisory group (DAG) meeting

The group will be reviewing refined design concepts and discussing the public art process.

Handouts/presentations and additional information

Thursday, January 12, 2012
6:30–8:30 pm
Fauntleroy Church
9140 California Ave. S.W.
Seattle, WA

Design advisory group (DAG) meeting

The purpose of this meeting is to explain the design concept and how it reflects the community’s input, and to get initial feedback from the DAG about the refining the concept. The project team wants to get the DAG’s initial input now so that it can be incorporated into the larger revision effort that will also incorporate interior design work as well as feedback from WTD’s Operations staff and SDOT.

Handouts/presentations and additional information

Tuesday, December 13, 2011
6:30–8:30 p.m.
The Hall at Fauntleroy
9131 California Ave. S.W.
Seattle, WA

Design advisory group (DAG) meeting

You are invited to join members of the King County project team and the Murray CSO DAG for the first working meeting.

The DAG will provide input and advice regarding proposed site layout, facility layout, post-construction site use, landscaping and aesthetics to share with the broader public and WTD. The group will review technical analyses in order to understand proposed layouts, and provide input about design options to inform the County’s decision-making. The DAG acts as a sounding board for the project technical team, and a project liaison to the public, helping ensure the County project team receives a broad community perspective. Topics for the December 13 DAG meeting include:

  • Working with the Seattle Department of Transportation on design elements
  • Site geotechnical conditions
  • Odor control needs and potential locations
  • Electrical equipment needs and potential locations

Handouts/presentations and additional information

Monday, November 14, 2011
6:30–8:00 p.m.
Fauntleroy Church
9140 California Ave. S.W.
Seattle, WA

Open house

Join your neighbors and the King County project team on November 14 to:

  • Learn about the common design themes developed by the community at the October 29 workshop
  • Review the conceptual facility drawings created at the workshop
  • Share your thoughts and ideas on the design concepts and other ways to make the facility an asset to the community

Handouts/presentations and additional information

Saturday, October 29, 2011
9:30 a.m.–3 p.m.
Gatewood Elementary School
4320 Southwest Myrtle Street
Seattle, WA

Facility design meeting

Join King County's project team to:

  • share your views and values to help inform facility design
  • learn how the facility will safely and reliably protect public health and the environment
  • work in small groups with the project team to brainstorm ways to make a facility an asset to the community

Handouts/presentations& and additional information

Thursday, October 20, 2011
6:30–8:30 p.m.
Fauntleroy Church Fellowship Hall
9140 California Ave. S.W.
Seattle, WA

Join the Murray CSO Control Project design team at a community meeting to:

  • meet the design team
  • review the facility design process and project schedule
  • learn how you can help King County design a facility that fits the community

Handouts/presentations and additional information

Project library

Barton and Murray (West Seattle) CSO Control Facilities Plan

Facilities Plan Cover - Barton and Murray CSO Control, Draft, February 2011King County has developed proposals to control combined sewer overflows (CSOs) at two locations in West Seattle—the Barton and Murray CSO basins. One project is the construction of a new 1.0-million-gallon storage tank on the east side of Beach Drive SW near Lowman Beach Park to control CSOs in the Murray CSO basin. The other is the installation of rain gardens in the right-of-way along 32 to 64 half-blocks in the Sunrise Heights and Westwood neighborhoods east of 35th Avenue SW to control overflows in the Barton CSO basin.

The Barton and Murray Combined Sewer Overflow Control Facilities Plan describes the reasons for these projects, the processes used to develop and evaluate alternatives, and the selection of proposed alternatives to advance for further environmental review. These projects are necessary to control CSOs in compliance with RCW 90.48.480 and WAC 173-245-020 (22).

This plan is submitted in compliance with the first of three compliance schedule dates noted in Section S18 of the West Point Treatment Plant National Pollutant Discharge Elimination System Permit (refer to page 53 of permit).

Final Facility Plan, September 2011

Draft Facilities Plan, February 2011

This project was initiated to address the following:

  • Revised Code of Washington (RCW) 90.48.480: This law requires “the greatest reasonable reduction of combined sewer overflows.”
  • Washington Administrative Code (WAC) 173-245-020 (22): “The greatest reasonable reduction’ means control of each CSO in such a way that an average of one untreated discharge may occur per year.”