3552 WEST MARGINAL WAY SW

Nov. 6, 2026: The project will construct a new, below-grade 60-inch-diameter pipe on Parcel 766703980 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 open-cut methods.
Construction on Parcel 7666703980 will also include a new 96-inch maintenance hole. The influent pipeline will continue onto adjoining parcels 7666703290, 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.
Total new construction areas on Parcel 7666703980 total 3,670 square feet, new and replaced impervious surfaces total 3,670 square feet, and there will be total site excavation of 2,310 cubic yards with 2,140 cubic yards of fill.
Please note that Parcel 766703980 has no assigned site address. 3546 West Marginal Way SW is the closest adjacent site address

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