Site work for a water / sewer project in Sumner, Washington. Completed plans call for site work for a water / sewer project; and water / sewer project.

This project will construct upgrades to the solids handling and solids treatment processes at the existing City of Sumner Wastewater Treatment Plant. These improvements will include construction of an expansion to the existing Solids Handling Building, including the installation of a new indirect biosolids dryer, thermal fluid heaters, and all associated equipment encompassed in the biosolids dryer scope of supply. The Contractor shall be assigned the portions of the executed Contract titled Biosolids Modernization Project Biosolids Drying Equipment Procurement, for the following items as specified in the Contract: Equipment Supply, Construction Services, and Post Construction Services. The project will also include construction of a temporary haul truck loading bay to facilitate demolition of existing facilities. Modifications to existing treatment systems, structures, and processes will include: replacement of the existing thickened primary sludge pumps in the existing Scum Pump Building, demolition of the existing dissolved air flotation thickener and associated equipment in Equipment Building 2 and the installation of a new rotary drum thickener and associated thickened waste activated sludge pumps, replacement of the existing digested sludge pumps, replacement of the existing thickening and dewatering polymer systems, and replacement of the existing air gap system in the existing Solids Handling Building. The existing dewatered sludge conveyance system will also be reconfigured including rehabilitation of the existing dewatered sludge storage hopper, modifications to existing conveyors (both temporary and permanent) and installation of new conveyors. Other project elements include the demolition of the existing waste gas burner and installation of a new digester gas treatment system to include hydrogen sulfide and moisture removal and digester gas compression, as well as the installation of a new enclosed waste gas flare. The existing submersible pumps in Plant Drain Pump Station No. 1 will be replaced and the walls of the existing centrate storage tank will be raised six feet. The internal recycle pumps and anoxic zone mixers in Aeration Basins 1 and 2 will also be replaced. The project will include installation of new and modifications to existing electrical power distribution and control equipment to support new improvements, including the installation of a new standby generator with subbase fuel tank in a sound attenuating enclosure. There will also be construction of a new hammerhead on State Street just outside the entrance to the plant and new security fencing and access gates. Bid Additive 1 will include the replacement of the existing effluent UV disinfection system. Question Deadline 02/17/2026 at 5:00 PM PT All questions requesting clarifications of the Contract Documents must be submitted in writing The Engineer's estimate range for this project is between $22,500,000 and $24,000,000. *The value for this project is based on a financial range. The value is listed as the highest possible cost from the range provided by a stakeholder or official project document.