Revise siltation structure capacity at mines

This bill amends Montana's mining reclamation laws to update requirements for siltation structures at strip and underground mines. It directly affects mining operators by clarifying capacity standards for sediment control facilities and establishing clearer rules for permit applications and public review processes. The legislation provides the state department with rulemaking authority to define specific capacity requirements while maintaining existing timelines for administrative review and public comment periods. Changes ensure that reclamation plans include detailed specifications for siltation structure capacity, with provisions for public notice, objection filing, and departmental review within established timeframes.