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Committee questions methane monitoring after EPA, aerial surveys show multiple actionable readings
Summary
DSAC members and Republic Services staff discussed surface emissions monitoring (SEM) and recent EPA/remote-sensing findings; Republic said their quarterly SEM program is ongoing, remediation follows actionable readings, and stronger context is needed to interpret plume maps and counts of exceedances.
Benton County's Disposal Site Advisory Committee discussed recent methane-monitoring results and national attention on landfill emissions at its Sept. 11 meeting, pressing the operator for context on how often surface emissions monitoring (SEM) detects actionable points and what remedial steps follow.
Committee members referred to remote-sensing and third-party data (including Carbon Mapper flyovers reported in the press) and an unannounced EPA survey that identified multiple actionable methane readings on the Coffin Butte site. A DSAC member summarized the apparent discrepancy between monitoring runs: a Republic-contracted SEM event earlier in the quarter found six actionable readings in…
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