---
type: "Bill"
title: "Environment - Commission on Climate Change Membership - Addition"
description: "Environment - Commission on Climate Change Membership - Addition"
jurisdiction: "us/states/md"
legislature: "Maryland General Assembly"
session: "2024"
identifier: "HB 323"
citation: "Maryland HB 323 (2024)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Guyton", "Lehman", "Love", "Ruth", "Stein", "Stewart"]
version_count: 3
action_count: 14
vote_count: 1
first_action: "2024-01-15"
last_action: "2024-05-09"
source: "openstates"
source_identifier: "ocd-bill/3d61b7f0-ac75-48e4-85db-449445522e23"
source_url: "http://mgaleg.maryland.gov/mgawebsite/Legislation/Details/hb0323?ys=2024RS&search=True"
source_hash: "0d36f6db739fcca00b75bb5a3344ecb3797c146100f71125675f25df342dc6e2"
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-md"]
---

# Maryland HB 323 (2024) — Environment - Commission on Climate Change Membership - Addition

## Version chain

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

1. **Chapter - Environment - Commission on Climate Change Membership - Addition** (committee substitute) — [source](http://mgaleg.maryland.gov/2024RS/Chapters_noln/CH_477_hb0323t.pdf)
2. **First - Environment - Commission on Climate Change Membership - Addition** (committee substitute) — [source](http://mgaleg.maryland.gov/2024RS/bills/hb/hb0323f.pdf)
3. **Third - Environment - Commission on Climate Change Membership - Addition** (committee substitute) — [source](http://mgaleg.maryland.gov/2024RS/bills/hb/hb0323t.pdf)

## Votes

- On Third Reading — **113–28** (pass) · lower

## Sponsors

- Guyton — primary (person)
- Lehman — primary (person)
- Love — primary (person)
- Ruth — primary (person)
- Stein — primary (person)
- Stewart — primary (person)

## Timeline

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

- **2024-01-15** First Reading Environment and Transportation and Economic Matters `referral-committee`
- **2024-01-18** Hearing 2/14 at 1:00 p.m. (Environment and Transportation)
- **2024-02-14** Hearing canceled (Environment and Transportation)
- **2024-02-14** Hearing 2/14 at 1:15 p.m. (Environment and Transportation)
- **2024-03-04** Favorable with Amendments Report by Environment and Transportation `committee-passage-favorable`
- **2024-03-05** Favorable with Amendments { `committee-passage-favorable`
- **2024-03-05** Second Reading Passed with Amendments
- **2024-03-07** Third Reading Passed `passage`
- **2024-03-08** Referred Education, Energy, and the Environment `referral-committee`
- **2024-03-27** Favorable Report by Education, Energy, and the Environment `committee-passage-favorable`
- **2024-03-27** Favorable Adopted Second Reading Passed `committee-passage-favorable`
- **2024-03-28** Third Reading Passed `passage`
- **2024-03-29** Returned Passed
- **2024-05-09** Approved by the Governor - Chapter 477 `executive-signature`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/3d61b7f0-ac75-48e4-85db-449445522e23`. Confidence: reported (aggregated from official Maryland legislature records).