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---
type: "Bill"
title: "Maryland Department of Health Biosafety Level 3 Laboratories in Frederick County"
description: "Maryland Department of Health Biosafety Level 3 Laboratories in Frederick County"
jurisdiction: "us/states/md"
legislature: "Maryland General Assembly"
session: "2020"
identifier: "HB 580"
citation: "Maryland HB 580 (2020)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Frederick County Delegation"]
version_count: 3
action_count: 13
vote_count: 2
first_action: "2020-01-27"
last_action: "2020-05-08"
source: "openstates"
source_identifier: "ocd-bill/6a675dc3-f1db-4418-b453-4da02a6b20b3"
source_url: "http://mgaleg.maryland.gov/mgawebsite/Legislation/Details/hb0580?ys=2020RS&search=True"
source_hash: "14ff0fc37ce5895f73635fc1c6de23831a07abde3f1879555505ffc1414689e8"
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 580 (2020) — Maryland Department of Health Biosafety Level 3 Laboratories in Frederick County
## Version chain
The bill's text revisions, in order — the diff chain from filing to enrollment.
1. **Chapter - Maryland Department of Health Biosafety Level 3 Laboratories in Frederick County** (committee substitute) — [source](http://mgaleg.maryland.gov/2020RS/Chapters_noln/CH_262_hb0580t.pdf)
2. **First - Maryland Department of Health - Biosafety Level 3 Laboratories** (committee substitute) — [source](http://mgaleg.maryland.gov/2020RS/bills/hb/hb0580f.pdf)
3. **Third - Maryland Department of Health Biosafety Level 3 Laboratories in Frederick County** (committee substitute) — [source](http://mgaleg.maryland.gov/2020RS/bills/hb/hb0580t.pdf)
## Votes
- On Third Reading — **1370** (pass) · lower
- On Third Reading — **460** (pass) · upper
## Sponsors
- Frederick County Delegation — primary (person)
## Timeline
The legislative action history — every referral, reading, and vote.
- **2020-01-27** First Reading Health and Government Operations `referral-committee`
- **2020-01-28** Hearing 2/12 at 1:00 p.m.
- **2020-02-24** Favorable with Amendments Report by Health and Government Operations `committee-passage-favorable`
- **2020-02-25** Favorable with Amendments { `committee-passage-favorable`
- **2020-02-25** Second Reading Passed with Amendments
- **2020-02-27** Third Reading Passed `passage`
- **2020-02-28** Referred Finance `referral-committee`
- **2020-03-15** Favorable Report by Finance `committee-passage-favorable`
- **2020-03-15** Favorable Adopted `committee-passage-favorable`
- **2020-03-15** Second Reading Passed
- **2020-03-16** Third Reading Passed `passage`
- **2020-03-17** Returned Passed
- **2020-05-08** Enacted under Article II, Section 17(c) of the Maryland Constitution - Chapter 262 `became-law`
## Source
OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/6a675dc3-f1db-4418-b453-4da02a6b20b3`. Confidence: reported (aggregated from official Maryland legislature records).