---
type: "Bill"
title: "Environment - Synthetic Turf - Disclosure and Study"
description: "Environment - Synthetic Turf - Disclosure and Study"
jurisdiction: "us/states/md"
legislature: "Maryland General Assembly"
session: "2024"
identifier: "HB 457"
citation: "Maryland HB 457 (2024)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Acevero", "Addison", "Allen", "Alston", "Amprey", "Attar", "Bagnall", "Barnes", "Boafo", "Boyce", "Charkoudian", "D. Jones", "Davis", "Ebersole", "Edelson", "Fair", "Foley", "Forbes", "Fraser-Hidalgo", "Guyton", "Guzzone", "Harris", "Healey", "Hill", "Holmes", "Ivey", "J. Long", "Kaufman", "Lehman", "Lopez", "Love", "Martinez", "McCaskill", "Palakovich Carr", "Pasteur", "Patterson", "Pena-Melnyk", "Phillips", "Pruski", "Qi", "R. Lewis", "Ruth", "S. Johnson", "Shetty", "Simmons", "Simpson", "Smith", "Solomon", "Stein", "Stewart", "Taveras", "Taylor", "Terrasa", "Vogel", "Williams", "Woods", "Ziegler"]
version_count: 4
action_count: 20
vote_count: 3
first_action: "2024-01-22"
last_action: "2024-05-09"
source: "openstates"
source_identifier: "ocd-bill/5a52b2df-4454-47f0-bf5e-eedc485820ba"
source_url: "http://mgaleg.maryland.gov/mgawebsite/Legislation/Details/hb0457?ys=2024RS&search=True"
source_hash: "85e20ee669f2afea5a6c887d04c2485ff291eaea62d36bac41498af78d3ffd9a"
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 457 (2024) — Environment - Synthetic Turf - Disclosure and Study

## Version chain

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

1. **Chapter - Environment - Synthetic Turf - Disclosure and Study** (committee substitute) — [source](http://mgaleg.maryland.gov/2024RS/Chapters_noln/CH_567_hb0457e.pdf)
2. **Enrolled - Environment - Synthetic Turf - Disclosure and Study** (committee substitute) — [source](http://mgaleg.maryland.gov/2024RS/bills/hb/hb0457e.pdf)
3. **First - Environment - Synthetic Turf - Chain of Custody** (committee substitute) — [source](http://mgaleg.maryland.gov/2024RS/bills/hb/hb0457f.pdf)
4. **Third - Environment - Synthetic Turf - Chain of Custody** (committee substitute) — [source](http://mgaleg.maryland.gov/2024RS/bills/hb/hb0457t.pdf)

## Votes

- On Third Reading — **101–38** (pass) · lower
- On Third Reading (Amend) — **44–0** (pass) · upper
- On Third Reading and Final Passage (Hse concurred) — **103–31** (pass) · lower

## Sponsors

- Acevero — primary (person)
- Addison — primary (person)
- Allen — primary (person)
- Alston — primary (person)
- Amprey — primary (person)
- Attar — primary (person)
- Bagnall — primary (person)
- Barnes — primary (person)
- Boafo — primary (person)
- Boyce — primary (person)
- Charkoudian — primary (person)
- D. Jones — primary (person)
- Davis — primary (person)
- Ebersole — primary (person)
- Edelson — primary (person)
- Fair — primary (person)
- Foley — primary (person)
- Forbes — primary (person)
- Fraser-Hidalgo — primary (person)
- Guyton — primary (person)
- Guzzone — primary (person)
- Harris — primary (person)
- Healey — primary (person)
- Hill — primary (person)
- Holmes — primary (person)
- Ivey — primary (person)
- J. Long — primary (person)
- Kaufman — primary (person)
- Lehman — primary (person)
- Lopez — primary (person)
- Love — primary (person)
- Martinez — primary (person)
- McCaskill — primary (person)
- Palakovich Carr — primary (person)
- Pasteur — primary (person)
- Patterson — primary (person)
- Pena-Melnyk — primary (person)
- Phillips — primary (person)
- Pruski — primary (person)
- Qi — primary (person)
- R. Lewis — primary (person)
- Ruth — primary (person)
- S. Johnson — primary (person)
- Shetty — primary (person)
- Simmons — primary (person)
- Simpson — primary (person)
- Smith — primary (person)
- Solomon — primary (person)
- Stein — primary (person)
- Stewart — primary (person)
- Taveras — primary (person)
- Taylor — primary (person)
- Terrasa — primary (person)
- Vogel — primary (person)
- Williams — primary (person)
- Woods — primary (person)
- Ziegler — primary (person)

## Timeline

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

- **2024-01-22** First Reading Environment and Transportation `referral-committee`
- **2024-01-25** Hearing 2/16 at 1:00 p.m.
- **2024-02-15** Hearing canceled
- **2024-02-15** Hearing 2/16 at 12:30 p.m.
- **2024-02-26** Favorable with Amendments Report by Environment and Transportation `committee-passage-favorable`
- **2024-02-27** Favorable with Amendments { `committee-passage-favorable`
- **2024-02-27** Second Reading Passed with Amendments
- **2024-02-29** Third Reading Passed `passage`
- **2024-03-01** Referred Education, Energy, and the Environment `referral-committee`
- **2024-03-18** Hearing 3/20 at 1:00 p.m.
- **2024-04-05** Favorable with Amendments Report by Education, Energy, and the Environment `committee-passage-favorable`
- **2024-04-05** Favorable with Amendments { `committee-passage-favorable`
- **2024-04-05** Motion Laid Over (Senator Ready) Adopted
- **2024-04-08** Favorable with Amendments { `committee-passage-favorable`
- **2024-04-08** Second Reading Passed with Amendments
- **2024-04-08** Third Reading Passed `passage`
- **2024-04-08** House Concurs Senate Amendments
- **2024-04-08** Third Reading Passed `passage`
- **2024-04-08** Passed Enrolled
- **2024-05-09** Approved by the Governor - Chapter 567 `executive-signature`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/5a52b2df-4454-47f0-bf5e-eedc485820ba`. Confidence: reported (aggregated from official Maryland legislature records).