The Buckhorn Mine began closure without an approved closure plan.
Crown/Kinross submitted a draft closure plan.
Ecology issued Notice of Violation (NOV) #15562 for water quality-related violations.
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.
The new upgraded Mine Water Treatment Plant (MWTP) came fully online to begin recirculation treatment (after many months without a water treatment plant).