Contested bill would narrow greenhouse‑gas analysis in MEPA; proponents and opponents spar over scope

Senate Bill 221 would establish statutory sideboards for greenhouse‑gas (GHG) assessments in Montana environmental review under the Montana Environmental Policy Act (MEPA), limit the kinds of activities that trigger those assessments and require the Department of Environmental Quality to draft guidance for agencies.

DEQ Director Sonya Nowakowski opened the hearing saying the agency supported the bill as a response to the Montana Supreme Court’s Held decision and described four changes the bill would make: define greenhouse gases, require GHG assessments for certain fossil‑fuel activities, limit the scope of the impacts agencies must assess to those "approximately caused," and direct DEQ to prepare guidance for state agencies on methods and thresholds.

"DEQ stands in full support," Nowakowski said, arguing the bill would provide predictability and clarify when an assessment is required. Industry, trade and labor groups — including representatives of the Montana Chamber of Commerce, the Montana Coal Council, the Montana Petroleum Association, the Montana Mining Association, utilities and construction trades — testified in favor, saying the bill would reduce litigation risk and provide a practical framework for permitting.

Proponents emphasized the need for workable sideboards rather than open‑ended litigation over how to account for upstream or downstream emissions. Beau Wilkins, DEQ’s Air Quality Bureau chief, told the committee that practical limits are needed because agencies lack reliable data about how Montana resources are ultimately used, processed or exported and that guidance should set defendable boundaries for analysis.

Opponents, including the Montana Environmental Information Center, Montana Conservation Voters, the Greater Yellowstone Coalition and other conservation and tribal witnesses, urged rejection or amendment. They argued the bill’s definition of "proposed action" and its exclusion of upstream, downstream and indirect actions would allow agencies to disregard significant emissions linked to Montana projects.

"What they're trying to do here is to create a fence line analysis that artificially narrows and deflates the emissions that may result from any one state action," Derf Johnson of the Montana Environmental Information Center said. He pointed to a DEQ analysis that measured on‑site emissions in the thousands of metric tons while estimated downstream combustion could amount to millions of tons.

Several tribal representatives said the bill did not include adequate consultation language and warned reduced analysis of indirect impacts could harm treaty resources and tribal air quality programs. Public‑health and medical testimony raised concerns about cumulative air‑quality impacts on children and other vulnerable populations.

Committee members pressed DEQ and proponents on specifics: how downstream emissions would be handled, whether DEQ has the tools to calculate downstream combustion if needed, and how public and tribal notice and consultation would be incorporated into any guidance. DEQ said the guidance process would include public outreach and noted the purpose of the bill is to provide a practical, legally defensible approach to GHG assessment rather than an open‑ended or global accounting of every downstream use.

Why it matters: The Held decision requires Montana agencies to consider greenhouse gases as part of MEPA but left open how agencies should do that. SB 221 attempts to set statutory limits on the scope and method of those analyses; the outcome could affect permitting for mines, power plants, pipelines and other fossil-fuel–related projects and influence litigation risk.

What’s next: The hearing attracted extensive pro and con testimony and detailed committee questioning. The bill sponsor indicated a willingness to work with agencies on specific language such as tribal consultation; DEQ said it would develop guidance through a public process if the bill passes. The committee did not record a final vote at the hearing.