Monitoring the Buckhorn Mine

Timeline


2017

July

The Buckhorn Mine began closure without an approved closure plan.

September

Crown/Kinross submitted a draft closure plan.

November

Ecology issued Notice of Violation (NOV) #15562 for water quality-related violations.

2018

May

Ecology approved the Crown/Kinross Hydrologic Closure Plan, even though it lacked basic details related to monitoring, benchmarks, and thresholds for assessing the effectiveness of water quality protections.

July

The new upgraded Mine Water Treatment Plant (MWTP) came fully online to begin recirculation treatment (after many months without a water treatment plant).

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