3800 WEST MARGINAL WAY SW

Oct. 28, 2026: The project will construct a new, below-grade 60-inch-diameter pipe on Parcel 7666703290 as part of a new gravity conveyance system to divert excess combined sewage from the Chelan Avenue Regulator Station and Diversion Structure to the Chelan Storage Tank. The pipeline will be installed using a combination of open-cut and trenchless methods.
Construction on Parcel 7666703290 will also include three new 96-inch maintenance holes. The influent pipeline will continue onto adjoining parcels 7666703980, 7666703990, and 7666704000, while the Chelan Ave Regulator Station and Diversion Structure and Chelan Storage Tank are located on parcels 7666703966, 7666703967, and 7666703464. All parcels are part of the Chelan Wet Weather Storage project and will be approved under separate land use and construction permits.
New construction areas on Parcel 7666703290 total 3,915 square feet, new and replaced impervious surfaces totals 3,915 square feet, and there will be total site excavation of 2,465 cubic yards with 2,215 cubic yards of fill.DO NOT ENTER PROPERTY, NOT OWNED BY KING COUNTY, PHOTOS FROM ROW ONLY.

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