---
type: "Bill"
title: "Sunset Natural Areas Council"
description: "The act continues the Colorado natural areas council, an advisory council to the parks and wildlife commission, for 10 years until September 1, 2034, subject to sunset review."
jurisdiction: "us/states/co"
legislature: "Colorado General Assembly"
session: "2024A"
identifier: "HB 24-1257"
citation: "Colorado HB 24-1257 (2024A)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Barbara McLachlan", "Marc Catlin", "Perry Will"]
version_count: 8
action_count: 12
vote_count: 2
first_action: "2024-02-12T07:00:00+00:00"
last_action: "2024-04-19T06:00:00+00:00"
source: "openstates"
source_identifier: "ocd-bill/8935b3c8-dec1-49a8-9dcd-d54a77e8fa78"
source_url: "https://leg.colorado.gov/bills/hb24-1257"
source_hash: "f4f6a1eb4c37e53d12191a009807e7a222d2ecf045b55d7971b3ebd72899248f"
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-co"]
---

# Colorado HB 24-1257 (2024A) — Sunset Natural Areas Council

The act continues the Colorado natural areas council, an advisory council to the parks and wildlife commission, for 10 years until September 1, 2034, subject to sunset review.

## Version chain

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

1. **Committee Amendment** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/2024a_hb1257_s_agr_001.pdf)
2. **Engrossed (03/04/2024)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2024A/bills/2024a_1257_eng.pdf)
3. **Final Act (04/12/2024)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2024A/bills/2024a_1257_enr.pdf)
4. **Introduced (02/12/2024)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2024A/bills/2024a_1257_01.pdf)
5. **Reengrossed (03/05/2024)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2024A/bills/2024a_1257_ren.pdf)
6. **Rerevised (03/27/2024)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2024A/bills/2024a_1257_rer.pdf)
7. **Revised (03/26/2024)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2024A/bills/2024a_1257_rev.pdf)
8. **Signed Act (04/19/2024)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/2024a_1257_signed.pdf)

## Votes

- BILL — **30–3** (pass) · upper
- BILL — **62–3** (pass) · lower

## Sponsors

- Barbara McLachlan — primary (person)
- Marc Catlin — primary (person)
- Perry Will — primary (person)

## Timeline

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

- **2024-04-19T06:00:00+00:00** Governor Signed `executive-signature`
- **2024-04-12T06:00:00+00:00** Sent to the Governor `executive-receipt`
- **2024-04-12T06:00:00+00:00** Signed by the President of the Senate
- **2024-04-11T06:00:00+00:00** Signed by the Speaker of the House
- **2024-03-27T06:00:00+00:00** Senate Third Reading Passed - No Amendments `passage, reading-3`
- **2024-03-26T06:00:00+00:00** Senate Second Reading Passed - No Amendments `reading-2`
- **2024-03-21T06:00:00+00:00** Senate Committee on Agriculture & Natural Resources Refer Unamended - Consent Calendar to Senate Committee of the Whole `committee-passage`
- **2024-03-07T07:00:00+00:00** Introduced In Senate - Assigned to Agriculture & Natural Resources `introduction`
- **2024-03-05T07:00:00+00:00** House Third Reading Passed - No Amendments `passage, reading-3`
- **2024-03-04T07:00:00+00:00** House Second Reading Special Order - Passed with Amendments - Floor
- **2024-02-29T07:00:00+00:00** House Committee on Agriculture, Water & Natural Resources Refer Unamended to House Committee of the Whole `committee-passage, referral-committee`
- **2024-02-12T07:00:00+00:00** Introduced In House - Assigned to Agriculture, Water & Natural Resources `introduction`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/8935b3c8-dec1-49a8-9dcd-d54a77e8fa78`. Confidence: reported (aggregated from official Colorado legislature records).