---
type: "Bill"
title: "Revise review panel for tailings plans"
description: "Revise review panel for tailings plans"
jurisdiction: "us/states/mt"
legislature: "Montana Legislature"
session: "2025"
identifier: "HB 699"
citation: "Montana HB 699 (2025)"
classification: ["bill"]
subjects: ["Environmental Protection", "Mining and Minerals", "Rule Making"]
status: "enacted"
primary_sponsors: ["Bill Mercer"]
version_count: 35
action_count: 38
vote_count: 8
first_action: "2024-12-13T16:37:37+00:00"
last_action: "2025-05-13T17:25:46+00:00"
source: "openstates"
source_identifier: "ocd-bill/f13122d4-16f0-4e18-b437-d702213ecf48"
source_url: "https://bills.legmt.gov/#/laws/bill/2/LC3135?open_tab=sum"
source_hash: "b3e5bec121b5b3a8f4157e3fa75c83facde16239f27c2bfcbb76596ece9087ba"
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 699 (2025) — Revise review panel for tailings plans

## Version chain

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

1. **HB0699.001.002_Amendments-in-Context_final-condensed(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=306247)
2. **HB0699.001.002_Amendments-in-Context_final-condensed.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=305721)
3. **HB0699.001.002_Amendments-in-Context_final-full.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=305798)
4. **HB0699_1(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=286634)
5. **HB0699_1(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=293901)
6. **HB0699_1(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=294084)
7. **HB0699_1(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=306097)
8. **HB0699_1(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=306451)
9. **HB0699_1(6).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=306452)
10. **HB0699_1(7).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=306453)
11. **HB0699_1(8).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=306454)
12. **HB0699_1.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=286491)
13. **HB0699_2(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=306673)
14. **HB0699_2(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=306683)
15. **HB0699_2(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=306696)
16. **HB0699_2(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=308983)
17. **HB0699_2(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=313516)
18. **HB0699_2(6).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=313518)
19. **HB0699_2.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=306672)
20. **HB0699_X(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=313520)
21. **HB0699_X(10).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=322452)
22. **HB0699_X(11).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=322453)
23. **HB0699_X(12).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=324879)
24. **HB0699_X(13).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=326746)
25. **HB0699_X(14).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=327758)
26. **HB0699_X(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=313524)
27. **HB0699_X(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=313741)
28. **HB0699_X(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=313742)
29. **HB0699_X(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=313744)
30. **HB0699_X(6).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=313745)
31. **HB0699_X(7).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=317269)
32. **HB0699_X(8).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=320781)
33. **HB0699_X(9).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=322451)
34. **HB0699_X.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=313519)
35. **LC3135.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=285524)

## Votes

- Do Concur — **50–0** (pass) · upper
- be_concurred_in_as_amended — **11–0** (pass) · upper
- Do Concur — **98–0** (pass) · lower
- do_pass — **14–0** (pass) · lower
- Do Pass — **99–0** (pass) · lower
- Do Pass — **98–1** (pass) · lower
- Do Concur — **48–0** (pass) · upper
- Do Concur — **100–0** (pass) · lower

## Sponsors

- Bill Mercer — primary (person)

## Timeline

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

- **2024-12-13T16:37:37+00:00** (LC) Drafter Assigned
- **2025-02-17T18:56:48+00:00** (LC) Draft in Legal Review
- **2025-02-17T22:17:11+00:00** (LC) Draft in Edit
- **2025-02-21T17:23:52+00:00** (LC) Draft in Input/Proofing
- **2025-02-22T16:05:49+00:00** (LC) Draft in Final Drafter Review
- **2025-02-22T18:56:09+00:00** (LC) Draft in Assembly
- **2025-02-24T13:44:32+00:00** (LC) Draft Ready for Delivery
- **2025-02-24T17:51:52+00:00** (LC) Draft Delivered to Requester
- **2025-02-24T17:56:00+00:00** (H) Introduced
- **2025-02-24T19:10:55+00:00** (H) Referred to Committee - (H) Natural Resources `referral-committee`
- **2025-02-24T20:09:59+00:00** (H) First Reading `reading-1`
- **2025-02-25T01:12:54+00:00** (H) Hearing - (H) Natural Resources
- **2025-03-03T22:59:53+00:00** (H) Committee Executive Action--Bill Passed - (H) Natural Resources `committee-passage`
- **2025-03-04T01:36:48+00:00** (H) Committee Report--Bill Passed - (H) Natural Resources `committee-passage`
- **2025-03-05T18:57:00+00:00** (H) 2nd Reading Passed `reading-2, reading-2`
- **2025-03-07T16:38:00+00:00** (H) 3rd Reading Passed `passage, reading-3`
- **2025-03-07T18:00:00+00:00** (H) Transmitted to Senate
- **2025-03-15T00:09:39+00:00** (S) First Reading `reading-1`
- **2025-03-17T15:15:04+00:00** (S) Referred to Committee - (S) Natural Resources `referral-committee`
- **2025-03-20T18:01:27+00:00** (S) Hearing - (S) Natural Resources
- **2025-04-08T00:40:43+00:00** (S) Committee Executive Action--Bill Concurred as Amended - (S) Natural Resources
- **2025-04-08T19:28:00+00:00** (S) Committee Report--Bill Concurred as Amended - (S) Natural Resources
- **2025-04-10T14:30:00+00:00** (S) Scheduled for 2nd Reading `reading-2`
- **2025-04-10T17:39:00+00:00** (S) 2nd Reading Concurred `reading-2, reading-2`
- **2025-04-11T16:00:00+00:00** (S) Scheduled for 3rd Reading `reading-3`
- **2025-04-11T21:45:00+00:00** (S) 3rd Reading Concurred `passage, reading-3`
- **2025-04-12T00:05:25+00:00** (S) Returned to House with Amendments
- **2025-04-17T19:00:00+00:00** (H) Scheduled for 2nd Reading `reading-2`
- **2025-04-17T20:49:00+00:00** (H) 2nd Reading Senate Amendments Concurred `amendment-amendment, amendment-passage, reading-2, reading-2`
- **2025-04-18T16:00:00+00:00** (H) Scheduled for 3rd Reading `reading-3`
- **2025-04-18T17:09:00+00:00** (H) 3rd Reading Passed as Amended by Senate `passage, passage, reading-3, reading-3`
- **2025-04-18T19:10:54+00:00** (H) Sent to Enrolling
- **2025-04-20T14:54:01+00:00** (H) Returned from Enrolling
- **2025-04-29T22:00:37+00:00** (H) Signed by Speaker `passage`
- **2025-05-02T16:30:36+00:00** (S) Signed by President `passage`
- **2025-05-02T17:24:00+00:00** (H) Transmitted to Governor `executive-receipt`
- **2025-05-08T17:11:09+00:00** (H) Signed by Governor `executive-signature`
- **2025-05-13T17:25:46+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/f13122d4-16f0-4e18-b437-d702213ecf48`. Confidence: reported (aggregated from official Montana legislature records).