Legislation: batch B — IL IN KS KY LA MA MD ME MI MN

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

legislation/us/states/md/2025/sb-253.md

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+---
+type: "Bill"
+title: "Controlled Hazardous Substance Facility Permit - Research Facilities - Chemical Warfare Material Requirements"
+description: "Controlled Hazardous Substance Facility Permit - Research Facilities - Chemical Warfare Material Requirements"
+jurisdiction: "us/states/md"
+legislature: "Maryland General Assembly"
+session: "2025"
+identifier: "SB 253"
+citation: "Maryland SB 253 (2025)"
+classification: ["bill"]
+subjects: []
+status: "enacted"
+primary_sponsors: []
+version_count: 4
+action_count: 23
+vote_count: 3
+first_action: "2024-10-04"
+last_action: "2025-05-13"
+source: "openstates"
+source_identifier: "ocd-bill/6ec87fcf-dde1-4964-88cc-9684c4216741"
+source_url: "http://mgaleg.maryland.gov/mgawebsite/Legislation/Details/sb0253?ys=2025RS&search=True"
+source_hash: "b1bbde1697812a67ca302b3cc78c8b249762df939bf02273dfb9c35a8b6ffbc5"
+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 SB 253 (2025) — Controlled Hazardous Substance Facility Permit - Research Facilities - Chemical Warfare Material Requirements
+
+## Version chain
+
+The bill's text revisions, in order — the diff chain from filing to enrollment.
+
+1. **Chapter - Controlled Hazardous Substance Facility Permit - Research Facilities - Chemical Warfare Material Requirements** (committee substitute) — [source](http://mgaleg.maryland.gov/2025RS/Chapters_noln/CH_445_sb0253e.pdf)
+2. **Enrolled - Controlled Hazardous Substance Facility Permit - Research Facilities - Chemical Warfare Material Requirements** (committee substitute) — [source](http://mgaleg.maryland.gov/2025RS/bills/sb/sb0253e.pdf)
+3. **First - Controlled Hazardous Substance Facility Permit - Research Facilities - Chemical Warfare Material Requirements** (committee substitute) — [source](http://mgaleg.maryland.gov/2025RS/bills/sb/sb0253f.pdf)
+4. **Third - Controlled Hazardous Substance Facility Permit - Research Facilities - Chemical Warfare Material Requirements** (committee substitute) — [source](http://mgaleg.maryland.gov/2025RS/bills/sb/sb0253t.pdf)
+
+## Votes
+
+- Bill is on Third Reading for Final Passage. — **43–0** (pass) · upper
+- On Third Reading (Amend) — **132–5** (pass) · lower
+- On Third Reading — **47–0** (pass) · upper
+
+## Sponsors
+
+- Chair, Education, Energy, and the Environment Committee — primary (organization)
+
+## Timeline
+
+The legislative action history — every referral, reading, and vote.
+
+- **2024-10-04** Pre-filed `introduction`
+- **2025-01-08** First Reading Education, Energy, and the Environment `referral-committee`
+- **2025-01-14** Hearing 1/23 at 1:00 p.m.
+- **2025-01-15** Hearing canceled
+- **2025-01-15** Hearing 1/29 at 1:00 p.m.
+- **2025-01-15** Hearing canceled
+- **2025-01-15** Hearing 1/29 at 1:30 p.m.
+- **2025-01-23** Hearing canceled
+- **2025-01-23** Hearing 1/29 at 2:30 p.m.
+- **2025-03-11** Favorable with Amendments Report by Education, Energy, and the Environment `committee-passage-favorable`
+- **2025-03-12** Favorable with Amendments { `committee-passage-favorable`
+- **2025-03-12** Second Reading Passed with Amendments
+- **2025-03-12** Third Reading Passed `passage`
+- **2025-03-13** Referred Environment and Transportation `referral-committee`
+- **2025-03-19** Hearing 3/26 at 1:00 p.m.
+- **2025-04-03** Favorable with Amendments Report by Environment and Transportation `committee-passage-favorable`
+- **2025-04-03** Favorable with Amendments { `committee-passage-favorable`
+- **2025-04-03** Second Reading Passed with Amendments
+- **2025-04-03** Third Reading Passed `passage`
+- **2025-04-05** Senate Concurs House Amendments
+- **2025-04-05** Third Reading Passed `passage`
+- **2025-04-05** Passed Enrolled
+- **2025-05-13** Approved by the Governor - Chapter 445 `executive-signature`
+
+## Source
+
+OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/6ec87fcf-dde1-4964-88cc-9684c4216741`. Confidence: reported (aggregated from official Maryland legislature records).
+