Environment

HB 291 limits the ability of Montana's Department of Environmental Quality (DEQ) and local air pollution control programs to set air quality standards stricter than federal requirements. The bill prohibits the DEQ from establishing emission levels or rules more stringent than federal Clean Air Act standards, with exceptions for existing requirements and areas that do not meet national ambient air quality standards. It also revises the process for the DEQ to adopt any rules more stringent than federal guidelines, now only allowing it through emergency rulemaking. Local air pollution control programs are similarly restricted from adopting more stringent rules without specific department approval.

SB 190 allows individuals or entities applying for new water use permits or changes to existing water rights to streamline their application process. This is achieved by enabling existing water right holders to voluntarily provide written consent. If consent is given, the applicant is no longer required to prove that their proposed water use will not negatively affect the specific consenting water rights. This change aims to simplify the permit approval process under certain conditions.

HB 64 repeals Montana's Small Business Compliance Assistance Advisory Council and removes its references from air quality regulations. The bill amends the duties of a small business stationary source representative, eliminating requirements for them to consult with the now-repealed council. This directly affects Montana small businesses subject to air quality regulations, as the council previously provided input on compliance challenges. The change streamlines the representative's role by removing council-related obligations while keeping their core responsibilities for assisting small businesses with regulatory compliance.

SB 61 updates Montana's water policy to require accurate, real-time streamflow measurement for determining water availability. It affects water rights holders and state water managers by ensuring new water uses can only be approved when legally and physically available, protecting existing rights. The bill integrates these measurement standards into Montana's existing water law framework under Title 85. This policy change aims to improve the accuracy of water distribution decisions.