Archaeological Wet Screening System

The Cowlitz County historical authority in Longview, Washington is seeking a vendor to construct and deliver an archaeological wet screening system. The agency needs to process stockpiled sediments using mechanized equipment to transport materials to a screening platform and consolidate waste rock spoils. This system must maintain the functionality of both water conveyance and sediment dewatering processes to support ongoing archaeological operations. The scope of work requires the construction of a screening system where screens can discard waste rock directly onto the platform using either a removable screen insert or a hinged dumping mechanism. The agency requires the installation of a catchment basin designed to collect and recycle decanted water by pumping it back into the water storage structure. Native in situ soils at the project location are identified via web soil survey mapping, and the vendor must perform complete site cleanup upon project completion. Bidders must be onshore United States organizations to be eligible for this contract. The agency requires all physical performance of the work to take place onsite in Longview, Washington. The contract period will span one year from the date of award. The agency is currently looking for proposals to establish the budget for this project. Bidders must submit their responses digitally either via email or through the designated online portal. The agency will evaluate proposals based on the ability to meet all technical specifications for the wet screening and water recycling systems.