---
type: "Bill"
title: "Generally revise Montana environmental policy act"
description: "Generally revise Montana environmental policy act"
jurisdiction: "us/states/mt"
legislature: "Montana Legislature"
session: "2025"
identifier: "HB 285"
citation: "Montana HB 285 (2025)"
classification: ["bill"]
subjects: ["Environmental Protection"]
status: "enacted"
primary_sponsors: ["Brandon Ler"]
version_count: 41
action_count: 41
vote_count: 8
first_action: "2024-12-13T14:08:40+00:00"
last_action: "2025-05-05T13:57:17+00:00"
source: "openstates"
source_identifier: "ocd-bill/02de2531-e6fc-48e1-beb7-50b97fab6fd7"
source_url: "https://bills.legmt.gov/#/laws/bill/2/LC2957?open_tab=sum"
source_hash: "2019d2c31d5cb37cc64b217a2067274d5e2dccf4ea3a580edefdcb7b5ed7db7b"
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 HB 285 (2025) — Generally revise Montana environmental policy act

## Version chain

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

1. **HB0285.001.001_Amendments-in-Context_final-condensed.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=300082)
2. **HB0285.001.001_Amendments-in-Context_final-full.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=300079)
3. **HB0285.001.002_Amendments-in-Context_final-condensed.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=300386)
4. **HB0285.001.002_Amendments-in-Context_final-full.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=300388)
5. **HB0285_1(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=274003)
6. **HB0285_1(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=275510)
7. **HB0285_1(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=276555)
8. **HB0285_1(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=282476)
9. **HB0285_1(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=300658)
10. **HB0285_1(6).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=301617)
11. **HB0285_1(7).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=301618)
12. **HB0285_1(8).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=301619)
13. **HB0285_1(9).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=301620)
14. **HB0285_1.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=273657)
15. **HB0285_2(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=301623)
16. **HB0285_2(10).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=303380)
17. **HB0285_2(11).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=303467)
18. **HB0285_2(12).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=304920)
19. **HB0285_2(13).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=311166)
20. **HB0285_2(14).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=311168)
21. **HB0285_2(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=301625)
22. **HB0285_2(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=301626)
23. **HB0285_2(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=301773)
24. **HB0285_2(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=301778)
25. **HB0285_2(6).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=301785)
26. **HB0285_2(7).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=301787)
27. **HB0285_2(8).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=301788)
28. **HB0285_2(9).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=301792)
29. **HB0285_2.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=301622)
30. **HB0285_X(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=311173)
31. **HB0285_X(10).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=326960)
32. **HB0285_X(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=311174)
33. **HB0285_X(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=311427)
34. **HB0285_X(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=311428)
35. **HB0285_X(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=311429)
36. **HB0285_X(6).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=317005)
37. **HB0285_X(7).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=320574)
38. **HB0285_X(8).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=324621)
39. **HB0285_X(9).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=326766)
40. **HB0285_X.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=311169)
41. **LC2957.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=272597)

## Votes

- Do Concur — **65–35** (pass) · lower
- Do Concur — **63–34** (pass) · lower
- be_concurred_in_as_amended — **7–4** (pass) · upper
- Do Concur — **31–18** (pass) · upper
- Do Pass — **57–42** (pass) · lower
- do_pass — **8–6** (pass) · lower
- Do Concur — **31–19** (pass) · upper
- Do Pass — **58–42** (pass) · lower

## Sponsors

- Brandon Ler — primary (person)

## Timeline

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

- **2024-12-13T14:08:40+00:00** (LC) Drafter Assigned
- **2024-12-13T14:08:40+00:00** (LC) Draft On Hold
- **2024-12-20T20:40:02+00:00** (LC) Draft Taken Off Hold
- **2025-01-18T18:26:22+00:00** (LC) Draft in Legal Review
- **2025-01-19T21:07:44+00:00** (LC) Draft in Edit
- **2025-01-20T14:47:45+00:00** (LC) Draft in Input/Proofing
- **2025-01-20T16:03:45+00:00** (LC) Draft in Final Drafter Review
- **2025-01-20T20:18:32+00:00** (LC) Draft in Assembly
- **2025-01-20T20:30:06+00:00** (LC) Draft Ready for Delivery
- **2025-01-21T23:03:03+00:00** (LC) Draft Delivered to Requester
- **2025-01-22T22:04:26+00:00** (H) Introduced
- **2025-01-23T18:54:40+00:00** (H) Referred to Committee - (H) Natural Resources `referral-committee`
- **2025-01-23T20:08:13+00:00** (H) First Reading `reading-1`
- **2025-01-27T18:29:29+00:00** (H) Hearing - (H) Natural Resources
- **2025-02-07T23:17:32+00:00** (H) Committee Executive Action--Bill Passed - (H) Natural Resources `committee-passage`
- **2025-02-10T20:24:00+00:00** (H) Committee Report--Bill Passed - (H) Natural Resources `committee-passage`
- **2025-02-12T20:34:00+00:00** (H) 2nd Reading Passed `reading-2, reading-2`
- **2025-02-13T21:22:00+00:00** (H) 3rd Reading Passed `passage, reading-3`
- **2025-02-14T18:45:32+00:00** (H) Transmitted to Senate
- **2025-02-14T22:12:00+00:00** (S) First Reading `reading-1`
- **2025-02-21T16:59:16+00:00** (S) Referred to Committee - (S) Natural Resources `referral-committee`
- **2025-03-21T16:44:57+00:00** (S) Hearing - (S) Natural Resources
- **2025-03-28T21:42:30+00:00** (S) Committee Executive Action--Bill Concurred as Amended - (S) Natural Resources
- **2025-03-31T19:19:00+00:00** (S) Committee Report--Bill Concurred as Amended - (S) Natural Resources
- **2025-04-02T20:36:11+00:00** (S) 2nd Reading Pass Consideration `reading-2`
- **2025-04-03T23:00:00+00:00** (S) Scheduled for 2nd Reading `reading-2`
- **2025-04-04T00:44:00+00:00** (S) 2nd Reading Concurred `reading-2, reading-2`
- **2025-04-04T19:00:00+00:00** (S) Scheduled for 3rd Reading `reading-3`
- **2025-04-04T19:41:00+00:00** (S) 3rd Reading Concurred `passage, reading-3`
- **2025-04-04T21:09:23+00:00** (S) Returned to House with Amendments
- **2025-04-14T19:00:00+00:00** (H) Scheduled for 2nd Reading `reading-2`
- **2025-04-14T20:18:00+00:00** (H) 2nd Reading Senate Amendments Concurred `amendment-amendment, amendment-passage, reading-2, reading-2`
- **2025-04-15T19:00:00+00:00** (H) Scheduled for 3rd Reading `reading-3`
- **2025-04-15T20:35:00+00:00** (H) 3rd Reading Passed as Amended by Senate `passage, passage, reading-3, reading-3`
- **2025-04-15T22:08:34+00:00** (H) Sent to Enrolling
- **2025-04-16T03:43:35+00:00** (H) Returned from Enrolling
- **2025-04-18T19:00:46+00:00** (H) Signed by Speaker `passage`
- **2025-04-22T00:00:24+00:00** (S) Signed by President `passage`
- **2025-04-22T18:10:24+00:00** (H) Transmitted to Governor `executive-receipt`
- **2025-05-01T21:14:29+00:00** (H) Signed by Governor `executive-signature`
- **2025-05-05T13:57:17+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/02de2531-e6fc-48e1-beb7-50b97fab6fd7`. Confidence: reported (aggregated from official Montana legislature records).