Offsets Bill Seeks Flexible Options for Nutrient Reductions; Environmental Groups Seek More Detail

Representative Fitzpatrick described House Bill 736 as a mechanism to allow nutrient pollutant loading offsets so point‑source dischargers (for example wastewater treatment plants) could obtain credit for measurable reductions achieved elsewhere in a watershed instead of installing extremely costly treatment upgrades.

Proponents including the Montana Mining Association, Montana Coal Council, Treasure State Resources Association, Montana Rural Water and city public‑works officials said offsets provide flexible, watershed‑scale options—riparian fencing, wetland development and septic removals—that can reduce nutrient loading more cost‑effectively than further end‑of‑pipe treatment. Matt Vincent (Montana Mining Association) and other proponents said the bill includes provisions to quantify percentage credits based on demonstrated reductions and that amendments under consideration would address project verification and the distinction between an ‘‘offset’’ (credit) and a ‘‘project’’ (action producing reductions).

Opponents—Clark Fork Coalition, Montana Environmental Information Center, Montana Wildlife Federation, Flathead Lakers and others—said the bill lacked sufficient detail on monitoring, enforcement and long‑term permanence of non‑point source reductions. They warned that allowing offsets to satisfy numeric effluent limits or undermine TMDLs risks increasing overall nutrient loads and could create enforcement and scientific verification challenges. The Clark Fork Coalition pointed to existing tools (nutrient credit trading and individual variances/compliance plans) and urged more specificity before authorizing offsets to modify permit effluent limits.

DEQ director Sonya Nowakowski and staff testified they ‘‘love the concept’’ and worked on amendment language with stakeholders; DEQ said it had reached tentative agreement on amendments that would improve implementation but had not finalized them at the hearing.

Witnesses described large capital costs for marginal nutrient gains at treatment plants: Billings officials said the city spent nearly $80 million to remove roughly 90% of nutrients and estimated removing the final 10% could cost an additional roughly $250 million and increase greenhouse‑gas emissions. Supporters said offsets would direct resources to more economical watershed solutions. Opponents warned the bill as drafted could allow point sources to exceed TMDL or effluent limits if non‑point projects fail to deliver permanent, quantifiable load reductions.

The hearing closed with DEQ indicating amendments were forthcoming to address monitoring, verification and permanence concerns; no committee vote was recorded in the transcript.