Project Description |
Date Completed |
Lake Hills Interceptor sewer repair -- The county repaired a severely corroded sewer pipeline segment along Bellevue-Redmond Road between 143rd Avenue Northeast and down through Northeast 16th Place as part of the Hydrogen Sulfide (H2S) Corrosion Control Program. |
spring 2009 |
| Hidden Lake Pump Station replacement and sewer improvement -- The county replaced its existing 40-year-old Hidden Lake Pump Station with a new 6.8-million-gallon-a-day pump station and 12,000 feet of new sewer trunk line near Boeing Creek in Shoreline. The project increased system reliability by adding capacity that will help reduce overflows into Puget Sound during heavy rains. Other investments include a 500,000-gallon-capacity underground wastewater storage pipe in Boeing Creek Park and an upgraded a City of Shoreline stormwater detention pond. |
spring 2009 |
| Carnation Wastewater Treatment Facility -- The county constructed a new wastewater treatment plant that replaces aging septic systems in the City of Carnation. The plant serves about 2,000 people in Carnation's urban growth area, with capacity to serve up to 4,000 in 2030. At design capacity, the plant is expected to treat 480,000 gallons of wastewater a day. |
spring 2008 |
| Densmore Stormwater System Improvement Project -- The county installed a stilling vault and ventilation pipe to better control stormwater and prevent overflows into the Lake Washington Ship Canal and Lake Union. The project included replacing the existing 36-inch-diameter drainpipe with one that's more stable and reliable. |
fall 2007 |
| Bellevue Way Southeast Sewer Pipe Installation -- This new 500 foot sewer pipe underneath Bellevue Way Southeast and the access road in Mercer Slough Nature Park east of 113th Avenue Southeast improves the wastewater system's reliability and capacity. |
summer 2007 |
| Fairwood Interceptor Sewer Project -- An aging pipeline in an area prone to erosion and landslides was replaced with a larger sewer line to improve water quality and slope stability around Madsen Creek, and to increase system capacity in the area. |
spring 2007 |
| North Mercer Interceptor Emergency Project -- 2,300 feet of sewer pipe was replaced underneath Southeast 24th Street, 84th Avenue Southeast and Luther Burbank Park on Mercer Island following the pipe rupture in December 2006. |
spring 2007 |
| Pacific Pump Station Replacement Project -- This pump station replaced an older station to carry increased wastewater flows from the City of Pacific to the South Treatment Plant in Renton. |
winter 2007 |
| Vashon Treatment Plant Upgrade -- Upgrading the existing treatment plant increased capacity and added backup systems to meet regulations and protect human health and the environment. |
fall 2006 |
| Matthews Park Pump Station and Sewer Improvement Project -- Since 2002, King County has completed three projects to upgrade aging infrastructure in the Matthews Beach area including upgrading the pump station, repairing corroded concrete inside the North Portal entrance to the Lake City Tunnel and repairing (slip lining) the Matthews Park force main. |
fall 2006 |
| York Pump Station Standby Generator Project -- Construction of three standby generators at York Pump Station, located in Redmond, will insure a backup power source in the event of a power outage. |
summer 2006 |
| Lincoln Park Sewer Line (Barton Force Main) Repair -- Relining of a 50-year-old sewer line that runs 6,250 feet through West Seattle's Lincoln Park after it was damaged during winter heavy storms. The project also included adding another 24-inch pipe along side the newly relined pipe to add capacity and allow periodic inspection of each of the lines. |
spring 2006 |
| Henderson/M.L. King CSO Project -- A sewer project in the Rainier Beach community that will reduce overflows from sewers in the area that reach Lake Washington. |
fall 2005 |
| Kamber Road Sewer Line Repair -- Repair of a 21-inch sewer line along Kamber Road in Bellevue next to East Creek are necessary because of ground settling and will protect public health and the environment. |
summer 2005 |
| Denny Way/Lake Union CSO Project -- Providing additional storage and treatment that will greatly reduce the number of untreated combined sewer overflows from the Denny Way wastewater regulator station. |
spring 2005 |
| Sweyolocken Pump Station -- The updated Sweyolocken Pump Station, located next to Bellevue Way and the Mercer Slough Nature Park, handles increased flows. |
winter 2005 |
| North Creek Storage Facility -- Located in the City of Bothell, this new 6-million-gallon underground storage tank manages excess wastewater. |
spring 2004 |
| Ravenna Creek Stream Flow Transfer Pipeline --This pipeline takes clean water from Ravenna Creek that used to flow into a sewer line and moves it into a pipe that flows into Lake Washington. |
winter 2004 |
| East Side Interceptor Sewer Improvement Project -- This sewer improvement project in downtown Renton restored lost capacity to the pipeline that carries wastewater from Eastside communities to the South Treatment Plant in Renton. |
spring 2003 |
