King County’s contractors are moving along with construction of our new wet-weather facility in Magnolia! If you missed the news, KOMO aired a piece about the archeological discoveries at the underground storage tank site:
For people who missed the presentation on the archeology story at Museum of History and Industry (MOHAI), we are looking at hosting a presentation this fall in Magnolia to talk about this work and also provide an overview of how King County works to protect our heritage, both historic and prehistoric. If you are new to Magnolia, you may not know that King County’s West Point Treatment Plant in Discovery Park is located on an important cultural site for the region’s tribes. More information about the discoveries at West Point can be found at http://www.burkemuseum.org/static/westpoint/
CSO Control Project Update – Final paving of 32nd Avenue West this week
Please plan for delays especially if you have important appointments.
The end is very near! Wednesday and Thursday, July 23-24, Walsh Construction will have heavy equipment on the road for two days to complete final paving. Traffic will be reduced to one lane and delayed to allow crews room to maneuver and pave in the road in sections. Newly paved areas will require cooling, which may add to wait times.
Flaggers will direct traffic through the work area, but people should expect extended delays, at times up to 20 minutes or more. Work hours will be 7:00 a.m. to about 5:00 p.m. weekdays. Following final paving, crews will complete plantings and restoration along shoulders of 32nd Avenue West.
Storage facility progress
Brickwork for the odor control/electrical building is also near complete. The roof framing is in, so you can get now see how the building will look. The view will be more complete when the final landscaping is installed. The newly-seeded athletic field on 23rd Avenue West is being watered, and this portion of the field is currently closed but will reopen when grass is established.
Young bald eagles appear larger and darker than their white-headed parents.
Storage tank concrete base and sewer pipeline installation complete!
King County is constructing a new combined sewer overflow (CSO) control facility in Magnolia to reduce overflows of untreated stormwater and wastewater into Puget Sound during heavy rains. At the end of 2014, King County’s contractors completed two important milestones. Stellar J Corporation successfully carried out a continuous concrete pour to install a 12-foot thick concrete base slab for the 1.5 million gallon underground storage tank.
The second component of this facility is a new gravity sewer pipeline. Walsh Construction and Mears Group, Inc. completed the final step in the Horizontal Directional Drilling (HDD) process, pulling almost 3,000 feet of pipeline through a borehole extending from 32nd Avenue West to an exit pit on 23rd Avenue West. During wet weather, stormwater and sewage will be diverted through this pipeline to the newly constructed underground storage tank across from Smith Cove Park.
Why does King County need to do this project?
This project is part of a long-term King County plan to help protect Puget Sound and reduce the number of combined sewer overflows (CSOs) in local waterways. In 2013, King County reported a long term average of 22.7 overflows per year from the Magnolia Outfall. The new CSO Control Facility is designed to reduce overflows to Elliott Bay to no more than one per year on a long-term average. The project is included in a federal consent decree that requires completion by December 2015.
What is the schedule for this project?
Planning and design for this project took place from 2007 to 2013. Construction began in 2014 and is scheduled for completion in 2015.
In recent months, area neighbors have reported sightings of bald eagles that built a nest in Magnolia Boulevard Park above 32nd Avenue West. We are monitoring the eagles until August, when work at the site will be complete. Work activities must adhere to seasonal restrictions to create the least disturbance for the birds. For more information, view the Fall 2014 Newsletter (PDF) or contact Hillary.Schafer@kingcounty.gov.