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Work group flags quarry rock, contractor talks as key constraint on Coffin Butte landfill capacity
Summary
At a Dec. 7 joint session of the Benton County Solid Waste Advisory Council and the Disposal Site Advisory Committee, subcommittee members said a major constraint on the Coffin Butte landfill's future capacity is that permitted landfill cells include a quarry area currently occupied by rock, and that Republic Services and Knife River are negotiating whether and how to remove that rock before landfill expansion.
At a Dec. 7 joint session of the Benton County Solid Waste Advisory Council (SWAC) and the Disposal Site Advisory Committee (DSAC), subcommittee members said a major constraint on the Coffin Butte landfill's future capacity is that permitted landfill cells include a quarry area currently occupied by rock, and that Republic Services and Knife River are discussing whether to remove that material before landfilling.
The meeting was a report-out from multiple subcommittees of the Benton County Talks Trash work group (BCTT). The landfill size, capacity and longevity subcommittee said the site development plan filed in 2021 lays out how permitted acreage and cell sequencing would allow continued operations, but that the quarry material complicates projections for when and how the landfill would move into the…
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