Replace all remaining existing collection sewer pipes in this neighborhood that are old and extremely deteriorated. Many of the pipes are more than 100 years old.
Reduce the frequency and volume of Combined Sewer Overflows (CSOs) to the Snohomish River that currently exceed regulatory limits.
Engineering analysis has determined that the best way to control the sewer CSOs is to remove the stormwater drainage coming from the streets and alleys from the collection sewers, treat that runoff and discharge it to the Snohomish River. A completely separate network of stormwater inlets and pipes will collect and treat the flows within the approximate 75-acres neighborhood. Additional construction will rehabilitate or replace the existing sanitary sewer pipes and side sewer laterals within the street right-of-way. Restoration work will involve repaving streets, replacing curbs, and sidewalks where impacted and building pedestrian ramps to current ADA standards at intersections.
Stormwater treatment will meet Washington Department of Ecology requirements prior to direct discharge to the Snohomish River in the vicinity of California Avenue and Harrison Avenue. Several different types of stormwater treatment systems will be installed including bio-retention swales, vegetated filters and canister vault filters. Everett is utilizing a $1 million grant the Washington Department of Ecology to help pay for the stormwater system improvements. Phase 1 construction cost is estimated to be $5.5 million.
Phase 1 Schedule
Bidding: July 28, 2014-August 19, 2014
Construction: October 2014-September 2015
The City of Everett is providing a full-time construction liaison / community project liaison (CPL) primarily responsible for addressing the needs of residents, businesses, etc. affected by the construction project activities. The CPL’s role is intended to provide a single, responsive point of contact for the public who is readily accessible by telephone or in person during normal business hours and during all hours of work throughout the duration of the projects. This sewer and stormwater project will be constructed simultaneously with the Tulalip Water Pipeline Segment 1 South.
Specific scheduling coordination is being employed in an effort to minimize disruption to the neighborhood and accomplish the work in the most efficient and expeditious manner possible. Streets and sidewalks will be closed at times and on-street parking will be prohibited when necessitated by construction activities. Utility service (water and sewer) interruptions may occur, but will be brief.