---
type: "Bill"
title: "Halogen Emissions Amendments"
description: "Halogen Emissions Amendments"
jurisdiction: "us/states/ut"
legislature: "Utah Legislature"
session: "2025"
identifier: "HB 420"
citation: "Utah HB 420 (2025)"
classification: ["bill"]
subjects: ["Air Quality", "Emissions Control", "Environment"]
status: "enacted"
primary_sponsors: ["Stoddard, Andrew"]
version_count: 12
action_count: 42
vote_count: 0
first_action: "2025-02-05T21:37:00+00:00"
last_action: "2025-03-26T00:57:00+00:00"
source: "openstates"
source_identifier: "ocd-bill/9c97c012-cf41-42f6-8908-311ffb0ddd43"
source_url: "https://le.utah.gov/~2025/bills/static/HB0420.html"
source_hash: "d66d42713d5369b0e7a72fdc472d58d5c3d19dbd820ed9a5e61daf58fd507e6a"
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-ut"]
---

# Utah HB 420 (2025) — Halogen Emissions Amendments

## Version chain

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

1. **Introduced** (filed) — [source](https://le.utah.gov/Session/2025/bills/introduced/HB0420.xml)
2. **Amended 2/24/2025 16:02:108** (committee substitute) — [source](https://le.utah.gov/Session/2025/bills/amended/AV_HB0420S01_2025-02-24_16-47-41.pdf)
3. **Amended Excerpts 2/24/2025 16:02:108** (committee substitute) — [source](https://le.utah.gov/Session/2025/bills/amended/AP_HB0420S01_2025-02-24_16-47-41.pdf)
4. **Comparison to Sub #0** (committee substitute) — [source](https://le.utah.gov/Session/2025/bills/introduced/CP HB0420 To HB0420S01.pdf)
5. **House Amendment 1** (committee substitute) — [source](https://le.utah.gov/Session/2025/bills/amended/HB0420S01.Hamd.1.pdf)
6. **House Amendment 2** (committee substitute) — [source](https://le.utah.gov/Session/2025/bills/amended/HB0420S01.Hamd.2.pdf)
7. **House Committee Report** (committee substitute) — [source](https://le.utah.gov/Session/2025/comreport/HB420H10.pdf)
8. **House Transmittal Letter 1** (committee substitute) — [source](https://le.utah.gov/Session/2025/transmit/HB420H10.pdf)
9. **Senate Committee Report** (committee substitute) — [source](https://le.utah.gov/Session/2025/comreport/HB420S10.pdf)
10. **Senate Transmittal Letter 1** (committee substitute) — [source](https://le.utah.gov/Session/2025/transmit/HB420S10.pdf)
11. **Substitute #1** (committee substitute) — [source](https://le.utah.gov/Session/2025/bills/introduced/HB0420S01.xml)
12. **Enrolled** (enrolled) — [source](https://le.utah.gov/Session/2025/bills/enrolled/HB0420.xml)

## Sponsors

- Stoddard, Andrew — primary (person)
- Cullimore, Kirk A. — cosponsor (person)

## Timeline

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

- **2025-02-05T21:37:00+00:00** Bill Numbered but not Distributed
- **2025-02-05T21:37:00+00:00** Numbered Bill Publicly Distributed
- **2025-02-06T17:09:00+00:00** House/ received bill from Legislative Research `receipt`
- **2025-02-06T18:15:00+00:00** House/ 1st reading (Introduced)
- **2025-02-10T17:49:00+00:00** House/ received fiscal note from Fiscal Analyst `receipt`
- **2025-02-11T19:31:00+00:00** House/ to standing committee `referral-committee`
- **2025-02-18T16:32:00+00:00** House Comm - Favorable Recommendation `committee-passage-favorable`
- **2025-02-18T21:13:00+00:00** House/ committee report favorable `committee-passage-favorable`
- **2025-02-18T21:13:00+00:00** House/ 2nd reading
- **2025-02-24T22:29:00+00:00** House/ 3rd reading
- **2025-02-24T22:30:00+00:00** House/ substituted
- **2025-02-24T22:30:00+00:00** House/ floor amendment
- **2025-02-24T22:42:00+00:00** House/ circled
- **2025-02-24T23:07:00+00:00** House/ uncircled
- **2025-02-24T23:08:00+00:00** House/ floor amendment
- **2025-02-24T23:10:00+00:00** House/ passed 3rd reading `passage`
- **2025-02-24T23:10:00+00:00** House/ to Senate
- **2025-02-25T15:02:00+00:00** Senate/ received from House `receipt`
- **2025-02-25T17:22:00+00:00** Senate/ 1st reading (Introduced)
- **2025-02-26T21:51:00+00:00** Senate/ to standing committee `referral-committee`
- **2025-03-01T00:05:00+00:00** Senate Comm - Held
- **2025-03-01T00:06:00+00:00** Senate Comm - Motion to Recommend Failed `failure`
- **2025-03-04T22:53:00+00:00** Senate Comm - Favorable Recommendation `committee-passage-favorable`
- **2025-03-05T16:53:00+00:00** Senate/ committee report favorable `committee-passage-favorable`
- **2025-03-05T16:53:00+00:00** Senate/ placed on 2nd Reading Calendar
- **2025-03-05T21:43:00+00:00** Senate/ 2nd Reading Calendar to Rules `reading-2`
- **2025-03-05T23:47:00+00:00** Senate/ Rules to 2nd Reading Calendar
- **2025-03-06T02:16:00+00:00** Senate/ 2nd & 3rd readings/ suspension
- **2025-03-06T02:16:00+00:00** Senate/ circled
- **2025-03-06T02:29:00+00:00** Senate/ uncircled
- **2025-03-06T02:32:00+00:00** Senate/ passed 2nd & 3rd readings/ suspension
- **2025-03-06T02:32:00+00:00** Senate/ signed by President/ returned to House `passage`
- **2025-03-06T02:32:00+00:00** Senate/ to House
- **2025-03-06T15:44:00+00:00** House/ received from Senate `receipt`
- **2025-03-06T15:44:00+00:00** House/ signed by Speaker/ sent for enrolling `passage`
- **2025-03-06T15:57:00+00:00** Bill Received from House for Enrolling
- **2025-03-06T15:57:00+00:00** Draft of Enrolled Bill Prepared
- **2025-03-07T17:06:00+00:00** Enrolled Bill Returned to House or Senate `enrolled`
- **2025-03-07T17:06:00+00:00** House/ enrolled bill to Printing
- **2025-03-17T17:38:00+00:00** House/ received enrolled bill from Printing `receipt`
- **2025-03-17T17:38:00+00:00** House/ to Governor `executive-receipt`
- **2025-03-26T00:57:00+00:00** Governor Signed `executive-signature`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/9c97c012-cf41-42f6-8908-311ffb0ddd43`. Confidence: reported (aggregated from official Utah legislature records).