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King County
Replace and reconfigure the 4 Interior Header for the landfill gas collection system at Cedar Hills Regional Landfill. The work includes decommissioning of existing HDPE piping, installation of new HDPE piping, excavation, geosynthetic repair/restoration, installation of valve assemblies, condensate, and well head controls, stormwater piping, and surface restoration.
KC001540-itb-documents
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City of Phoenix
Seeking proposal for operations, maintenance, & monitoring of the landfill gas collection control system.
King County
Restore landfill buffer requirements on approx. 15.2 acres of privately developed property located between the west side of 230th Ave SE and the east boundary of the Cedar Hills Regional Landfill Facility (CHRLF).
Kulli Chito Environmental Trust Authority
Engineering firms to submit their qualifications for the design and construction oversight of a new landfill cell, including integration with an existing leachate collection system. The selected firm will be responsible for the following: Design and engineering of the new landfill cell, including all drawings and specifications; Obtain ODEQ Approval; Prepare bid packages and oversee bidding, award and procurement. Construction oversight of the landfill cell to meet all state and federal regulatory requirements; Coordination with KCEA and relevant regulatory agencies; Preparation of as-built documentation and commissioning of the completed cell.
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Nov 07, 2025
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Dec 04, 2025