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Commission directs plan for screw‑press biosolids system to meet stormwater and biosolids obligations
Summary
After reviewing options for biosolids management, commissioners supported pursuing a screw‑press system for flexibility and capacity and directed engineers and staff to design the project ahead of a December 2026 compliance deadline.
Engineers presented several biosolids disposal options, including composting and land application; commissioners favored a screw‑press option because of its capacity and operational flexibility compared with composting alternatives.
Commissioner Buehler moved and Commissioner Spika seconded to proceed with detailed planning and design for the screw‑press option; the motion passed unanimously. City Manager Holly Phelps said the design work will be coordinated with DEQ and Robert Peccia & Associates to meet a December 2026 construction deadline and to resolve related stormwater permit issues at the wastewater treatment plant.
Commission discussion emphasized that the screw press would not immediately solve every capacity issue but was judged the best path forward to meet regulatory timelines and offer growth potential.
