Bill would allow data modeling to augment physical sampling for mine bond release

Feb 26, 2025

HB 616 would authorize operators to use computer modeling to supplement physical sediment sampling across mined drainages when seeking bond release; industry and DEQ proponents said the approach is more efficient, while landowner groups urged transparency, public access to model inputs, and statutory guardrails.

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Representative Steve Gist presented House Bill 616, which would allow mine operators to use data modeling to augment field sampling when demonstrating that reclamation satisfies sediment and hydrologic requirements for bond release.

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