Legislation: batch C — MO MS MT NC ND NE NH NJ NM NV

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

legislation/us/states/mt/2025/sb-390.md

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+---
+type: "Bill"
+title: "Revise definitions in Clean Indoor Air Act"
+description: "Revise definitions in Clean Indoor Air Act"
+jurisdiction: "us/states/mt"
+legislature: "Montana Legislature"
+session: "2025"
+identifier: "SB 390"
+citation: "Montana SB 390 (2025)"
+classification: ["bill"]
+subjects: ["Buildings and Building Regulations", "Health"]
+status: "enacted"
+primary_sponsors: ["Willis Curdy"]
+version_count: 31
+action_count: 44
+vote_count: 10
+first_action: "2024-12-15T14:46:07+00:00"
+last_action: "2025-05-13T13:36:06+00:00"
+source: "openstates"
+source_identifier: "ocd-bill/35167c84-a08b-4672-9938-d896558c1fc8"
+source_url: "https://bills.legmt.gov/#/laws/bill/2/LC3855?open_tab=sum"
+source_hash: "83e8b93a8d01bb55aa82d704971952b634e0c68604c4856915179c025d7e608b"
+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 390 (2025) — Revise definitions in Clean Indoor Air Act
+
+## Version chain
+
+The bill's text revisions, in order — the diff chain from filing to enrollment.
+
+1. **LC3855.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=282829)
+2. **SB0390.001.001_Amendments-in-Context_final-full.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=307046)
+3. **SB0390.001.002_Amendments-in-Context_final-full.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=307602)
+4. **SB0390_1(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=284974)
+5. **SB0390_1(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=293514)
+6. **SB0390_1(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=293697)
+7. **SB0390_1(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=308620)
+8. **SB0390_1(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=308621)
+9. **SB0390_1(6).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=308622)
+10. **SB0390_1(7).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=308623)
+11. **SB0390_1.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=284973)
+12. **SB0390_2(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=309025)
+13. **SB0390_2(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=311296)
+14. **SB0390_2(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=311299)
+15. **SB0390_2.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=308649)
+16. **SB0390_X(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=311301)
+17. **SB0390_X(10).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=320631)
+18. **SB0390_X(11).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=322671)
+19. **SB0390_X(12).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=322672)
+20. **SB0390_X(13).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=322673)
+21. **SB0390_X(14).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=324950)
+22. **SB0390_X(15).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=326954)
+23. **SB0390_X(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=311302)
+24. **SB0390_X(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=312107)
+25. **SB0390_X(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=312108)
+26. **SB0390_X(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=312109)
+27. **SB0390_X(6).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=312110)
+28. **SB0390_X(7).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=312111)
+29. **SB0390_X(8).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=312112)
+30. **SB0390_X(9).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=317064)
+31. **SB0390_X.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=311300)
+
+## Votes
+
+- Do Pass — **34–16** (pass) · upper
+- Do Pass — **37–12** (pass) · upper
+- to_table — **15–0** (pass) · lower
+- do_pass — **10–1** (pass) · upper
+- Do Pass — **38–12** (pass) · upper
+- Do Concur — **59–39** (pass) · lower
+- Do Pass — **31–19** (pass) · upper
+- Do Concur — **64–35** (pass) · lower
+- be_concurred_in_as_amended — **11–10** (pass) · lower
+- to_take_from_the_table — **10–5** (pass) · lower
+
+## Sponsors
+
+- Willis Curdy — primary (person)
+
+## Timeline
+
+The legislative action history — every referral, reading, and vote.
+
+- **2024-12-15T14:46:07+00:00** (LC) Drafter Assigned
+- **2024-12-24T23:50:30+00:00** (LC) Draft On Hold
+- **2025-02-05T21:03:36+00:00** (LC) Draft Taken Off Hold
+- **2025-02-12T16:26:31+00:00** (LC) Draft in Legal Review
+- **2025-02-12T22:09:41+00:00** (LC) Draft in Edit
+- **2025-02-14T19:58:55+00:00** (LC) Draft in Input/Proofing
+- **2025-02-15T23:17:51+00:00** (LC) Draft in Final Drafter Review
+- **2025-02-16T15:40:30+00:00** (LC) Draft in Assembly
+- **2025-02-17T19:47:28+00:00** (LC) Draft Ready for Delivery
+- **2025-02-19T15:20:04+00:00** (LC) Draft Delivered to Requester
+- **2025-02-20T19:59:43+00:00** (S) Introduced
+- **2025-02-21T20:13:39+00:00** (S) First Reading `reading-1`
+- **2025-02-21T20:28:00+00:00** (S) Referred to Committee - (S) Public Health, Welfare and Safety `referral-committee`
+- **2025-02-27T21:27:58+00:00** (S) Hearing - (S) Public Health, Welfare and Safety
+- **2025-03-01T04:14:01+00:00** (S) Committee Executive Action--Bill Passed - (S) Public Health, Welfare and Safety `committee-passage`
+- **2025-03-01T18:25:00+00:00** (S) Committee Report--Bill Passed - (S) Public Health, Welfare and Safety `committee-passage`
+- **2025-03-06T11:28:00+00:00** (S) Scheduled for 2nd Reading `reading-2`
+- **2025-03-06T15:46:00+00:00** (S) 2nd Reading Passed `reading-2, reading-2`
+- **2025-03-06T23:28:00+00:00** (S) Scheduled for 3rd Reading `reading-3`
+- **2025-03-07T01:56:00+00:00** (S) 3rd Reading Passed `passage, reading-3`
+- **2025-03-07T16:18:23+00:00** (S) Transmitted to House
+- **2025-03-17T15:20:12+00:00** (H) Referred to Committee - (H) Human Services `referral-committee`
+- **2025-03-17T19:15:00+00:00** (H) First Reading `reading-1`
+- **2025-03-19T19:09:12+00:00** (H) Hearing - (H) Human Services
+- **2025-03-28T22:11:00+00:00** (H) Tabled in Committee - (H) Human Services `amendment-deferral`
+- **2025-04-10T00:20:56+00:00** (H) Taken from Table in Committee - (H) Human Services
+- **2025-04-10T00:25:24+00:00** (H) Committee Executive Action--Bill Concurred as Amended - (H) Human Services
+- **2025-04-11T14:47:00+00:00** (H) Committee Report--Bill Concurred as Amended - (H) Human Services
+- **2025-04-11T16:00:00+00:00** (H) Scheduled for 2nd Reading `reading-2`
+- **2025-04-11T20:48:00+00:00** (H) 2nd Reading Concurred `reading-2, reading-2`
+- **2025-04-11T21:01:00+00:00** (H) Scheduled for 3rd Reading `reading-3`
+- **2025-04-12T00:05:00+00:00** (H) 3rd Reading Concurred `passage, reading-3`
+- **2025-04-12T01:02:42+00:00** (H) Returned to Senate with Amendments
+- **2025-04-14T20:00:00+00:00** (S) Scheduled for 2nd Reading `reading-2`
+- **2025-04-14T20:45:00+00:00** (S) 2nd Reading Concurred `reading-2, reading-2`
+- **2025-04-15T19:00:00+00:00** (S) Scheduled for 3rd Reading `reading-3`
+- **2025-04-15T22:08:00+00:00** (S) 3rd Reading Passed as Amended by House `passage, passage, reading-3, reading-3`
+- **2025-04-15T22:36:13+00:00** (S) Sent to Enrolling
+- **2025-04-16T21:35:59+00:00** (S) Returned from Enrolling
+- **2025-04-22T23:00:10+00:00** (S) Signed by President `passage`
+- **2025-05-01T18:00:14+00:00** (H) Signed by Speaker `passage`
+- **2025-05-01T18:36:33+00:00** (S) Transmitted to Governor `executive-receipt`
+- **2025-05-09T02:46:00+00:00** (S) Signed by Governor `executive-signature`
+- **2025-05-13T13:36:06+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/35167c84-a08b-4672-9938-d896558c1fc8`. Confidence: reported (aggregated from official Montana legislature records).
+