---
type: "Bill"
title: "Generally revise the Montana environmental policy act"
description: "Generally revise the Montana environmental policy act"
jurisdiction: "us/states/mt"
legislature: "Montana Legislature"
session: "2025"
identifier: "SB 221"
citation: "Montana SB 221 (2025)"
classification: ["bill"]
subjects: ["Environmental Protection"]
status: "enacted"
primary_sponsors: ["Wylie Galt"]
version_count: 31
action_count: 35
vote_count: 7
first_action: "2024-12-20T14:29:20+00:00"
last_action: "2025-05-05T17:42:21+00:00"
source: "openstates"
source_identifier: "ocd-bill/ca2635fe-f7de-4342-a24f-e571880da2ea"
source_url: "https://bills.legmt.gov/#/laws/bill/2/LC4171?open_tab=sum"
source_hash: "e37cf084026127369ddac16d3d6fdc171db7280611ca0763d96a0009eef6645a"
vintage: "2026-07-01"
source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
retrieved_at: "2026-07-06"
confidence: "reported"
tags: ["legislation", "bill", "us-mt"]
---

# Montana SB 221 (2025) — Generally revise the Montana environmental policy act

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **LC4171.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=273460)
2. **SB0221.001.001_Amendments-in-Context_final-full.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=280379)
3. **SB0221_1(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=275654)
4. **SB0221_1(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=276038)
5. **SB0221_1(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=276742)
6. **SB0221_1(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=277610)
7. **SB0221_1(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=280395)
8. **SB0221_1(6).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=280979)
9. **SB0221_1(7).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=280980)
10. **SB0221_1(8).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=280981)
11. **SB0221_1(9).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=280982)
12. **SB0221_1.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=275029)
13. **SB0221_2(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=280984)
14. **SB0221_2(10).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=308256)
15. **SB0221_2(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=280992)
16. **SB0221_2(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=280993)
17. **SB0221_2(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=280999)
18. **SB0221_2(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=281001)
19. **SB0221_2(6).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=281002)
20. **SB0221_2(7).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=281034)
21. **SB0221_2(8).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=282214)
22. **SB0221_2(9).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=308255)
23. **SB0221_2.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=280983)
24. **SB0221_X(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=315074)
25. **SB0221_X(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=317236)
26. **SB0221_X(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=320762)
27. **SB0221_X(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=321674)
28. **SB0221_X(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=321675)
29. **SB0221_X(6).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=321676)
30. **SB0221_X(7).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=324719)
31. **SB0221_X.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=310895)

## Votes

- Do Pass — **37–13** (pass) · upper
- Do Pass — **37–13** (pass) · upper
- Do Concur — **62–37** (pass) · lower
- Cloture-France — **90–4** (pass) · lower
- do_pass_as_amended — **8–3** (pass) · upper
- be_concurred_in — **8–6** (pass) · lower
- Do Concur — **63–35** (pass) · lower

## Sponsors

- Wylie Galt — primary (person)

## Timeline

The legislative action history — every referral, reading, and vote.

- **2024-12-20T14:29:20+00:00** (LC) Drafter Assigned
- **2025-01-18T21:13:02+00:00** (LC) Draft in Legal Review
- **2025-01-21T14:04:25+00:00** (LC) Draft in Edit
- **2025-01-22T15:34:51+00:00** (LC) Draft in Input/Proofing
- **2025-01-22T23:54:01+00:00** (LC) Draft in Final Drafter Review
- **2025-01-23T00:34:46+00:00** (LC) Draft in Assembly
- **2025-01-24T18:18:06+00:00** (LC) Draft Ready for Delivery
- **2025-01-27T17:03:24+00:00** (LC) Draft Delivered to Requester
- **2025-01-28T00:14:21+00:00** (S) Introduced
- **2025-01-28T19:01:00+00:00** (S) First Reading `reading-1`
- **2025-01-28T19:37:23+00:00** (S) Referred to Committee - (S) Natural Resources `referral-committee`
- **2025-01-28T21:44:28+00:00** (S) Hearing - (S) Natural Resources
- **2025-02-10T22:58:08+00:00** (S) Committee Executive Action--Bill Passed as Amended - (S) Natural Resources `committee-passage`
- **2025-02-11T20:39:00+00:00** (S) Committee Report--Bill Passed as Amended - (S) Natural Resources `committee-passage`
- **2025-02-12T20:00:00+00:00** (S) Scheduled for 2nd Reading `reading-2`
- **2025-02-12T20:38:00+00:00** (S) 2nd Reading Passed `reading-2, reading-2`
- **2025-02-13T20:00:00+00:00** (S) Scheduled for 3rd Reading `reading-3`
- **2025-02-13T21:17:00+00:00** (S) 3rd Reading Passed `passage, reading-3`
- **2025-02-13T22:37:04+00:00** (S) Transmitted to House
- **2025-02-14T16:43:25+00:00** (H) Referred to Committee - (H) Natural Resources `referral-committee`
- **2025-02-14T20:07:30+00:00** (H) First Reading `reading-1`
- **2025-03-17T22:19:36+00:00** (H) Hearing - (H) Natural Resources
- **2025-03-26T23:28:25+00:00** (H) Committee Executive Action--Bill Concurred - (H) Natural Resources
- **2025-03-27T20:05:00+00:00** (H) Committee Report--Bill Concurred - (H) Natural Resources
- **2025-04-09T19:00:00+00:00** (H) Scheduled for 2nd Reading `reading-2`
- **2025-04-09T20:41:00+00:00** (H) 2nd Reading Concurred `reading-2, reading-2`
- **2025-04-10T14:30:00+00:00** (H) Scheduled for 3rd Reading `reading-3`
- **2025-04-10T14:57:00+00:00** (H) 3rd Reading Concurred `passage, reading-3`
- **2025-04-10T14:57:58+00:00** (S) Sent to Enrolling
- **2025-04-11T17:30:05+00:00** (S) Returned from Enrolling
- **2025-04-21T22:00:00+00:00** (S) Signed by President `passage`
- **2025-04-23T01:00:57+00:00** (H) Signed by Speaker `passage`
- **2025-04-23T14:03:00+00:00** (S) Transmitted to Governor `executive-receipt`
- **2025-05-01T18:33:04+00:00** (S) Signed by Governor `executive-signature`
- **2025-05-05T17:42:21+00:00** Chapter Number Assigned `became-law`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/ca2635fe-f7de-4342-a24f-e571880da2ea`. Confidence: reported (aggregated from official Montana legislature records).