---
type: "Bill"
title: "ENVIRONMENTAL CONTROL: Provides for air monitoring. (gov sig) (EN INCREASE SG EX See Note)"
description: "ENVIRONMENTAL CONTROL: Provides for air monitoring. (gov sig) (EN INCREASE SG EX See Note)"
jurisdiction: "us/states/la"
legislature: "Louisiana Legislature"
session: "2024"
identifier: "SB 503"
citation: "Louisiana SB 503 (2024)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Eddie Lambert"]
version_count: 8
action_count: 21
vote_count: 3
first_action: "2024-04-03"
last_action: "2024-05-23"
source: "openstates"
source_identifier: "ocd-bill/ed350b07-e001-46f9-9612-10150b507322"
source_url: "https://www.legis.la.gov/Legis/BillInfo.aspx?i=247217"
source_hash: "791de7fe59c2ef4a009af2313c092ddbf8685b42f41d1e55a59135bee4c0b5e5"
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-la"]
---

# Louisiana SB 503 (2024) — ENVIRONMENTAL CONTROL: Provides for air monitoring. (gov sig) (EN INCREASE SG EX See Note)

## Version chain

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

1. **SB503 Original** (filed) — [source](https://www.legis.la.gov/Legis/ViewDocument.aspx?d=1362216)
2. **House Committee Amendment, #3172, NATR, Draft** (committee substitute) — [source](https://www.legis.la.gov/Legis/ViewDocument.aspx?d=1366171)
3. **House Committee Amendment, #3229, NATR, Adopted** (committee substitute) — [source](https://www.legis.la.gov/Legis/ViewDocument.aspx?d=1366532)
4. **SB503 Act** (committee substitute) — [source](https://www.legis.la.gov/Legis/ViewDocument.aspx?d=1379395)
5. **SB503 Engrossed** (committee substitute) — [source](https://www.legis.la.gov/Legis/ViewDocument.aspx?d=1363519)
6. **SB503 Reengrossed** (committee substitute) — [source](https://www.legis.la.gov/Legis/ViewDocument.aspx?d=1364185)
7. **Senate Floor Legislative Bureau Amendment, #1771, Miller, G., Adopted** (committee substitute) — [source](https://www.legis.la.gov/Legis/ViewDocument.aspx?d=1363670)
8. **SB503 Enrolled** (enrolled) — [source](https://www.legis.la.gov/Legis/ViewDocument.aspx?d=1373929)

## Votes

- FINAL PASSAGE (#267) — **30–8** (pass) · upper
- CONCUR (#620) — **35–0** (pass) · upper
- FINAL PASSAGE (#944) — **76–16** (pass) · lower

## Sponsors

- Eddie Lambert — primary (person)

## Timeline

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

- **2024-05-23** Effective date 5/23/2024.
- **2024-05-23** Signed by the Governor. Becomes Act No. 181. `became-law, executive-signature`
- **2024-05-15** Sent to the Governor by the Secretary of the Senate. `executive-receipt`
- **2024-05-14** Signed by the Speaker of the House.
- **2024-05-14** Enrolled. Signed by the President of the Senate. `enrolled`
- **2024-05-13** Amendments proposed by the House read and concurred in by a vote of 35 yeas and 0 nays.
- **2024-05-08** Received from the House with amendments. `receipt`
- **2024-05-08** Read third time by title, roll called on final passage, yeas 76, nays 16. Finally passed, ordered to the Senate. `passage`
- **2024-05-08** Called from the calendar.
- **2024-05-06** Scheduled for floor debate on 05/08/2024.
- **2024-05-06** Notice given.
- **2024-05-06** Read by title, returned to the calendar.
- **2024-05-01** Scheduled for floor debate on 05/06/2024.
- **2024-04-22** Read by title, amended, passed to 3rd reading. `reading-3`
- **2024-04-18** Reported without Legislative Bureau amendments.
- **2024-04-17** Reported with amendments (13-0). Referred to the Legislative Bureau. `committee-passage-favorable`
- **2024-04-11** Read by title, under the rules, referred to the Committee on Natural Resources and Environment. `referral-committee`
- **2024-04-10** Received in the House from the Senate, read by title, lies over under the rules.
- **2024-04-09** Senate floor amendments read and adopted. Read by title and passed by a vote of 30 yeas and 8 nays; ordered reengrossed and sent to the House. Motion to reconsider tabled. `passage`
- **2024-04-08** Read by title. Ordered engrossed and passed to third reading and final passage.
- **2024-04-03** Substitute for Senate Bill No. 275. Read by title and placed on the Calendar for a second reading.

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/ed350b07-e001-46f9-9612-10150b507322`. Confidence: reported (aggregated from official Louisiana legislature records).