---
type: "Bill"
title: "Hazardous substances: contaminated property: fentanyl cleanup."
description: "Existing law provides that a person who is found to have operated a site for the purpose of manufacturing an illegal controlled substance or the precursor of an illegal controlled substance is the generator of a hazardous substance at, or released from, the site that is subject to removal action by the Department of Toxic Substances Control."
jurisdiction: "us/states/ca"
legislature: "California Legislature"
session: "20192020"
identifier: "AB 1596"
citation: "California AB 1596 (20192020)"
classification: ["bill"]
subjects: ["Hazardous substances: contaminated property: fentanyl cleanup."]
status: "enacted"
primary_sponsors: ["Committee on Environmental Safety and Toxic Materials"]
version_count: 7
action_count: 25
vote_count: 8
first_action: "2019-02-22"
last_action: "2019-10-09"
source: "openstates"
source_identifier: "ocd-bill/fbe6453c-3587-48e4-9d60-1b19387b8872"
source_url: "http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=201920200AB1596"
source_hash: "90b93175b19f7bfdc9cbbc007215db3626b5bbb63fd00c9255e118241ac9c825"
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-ca"]
---

# California AB 1596 (20192020) — Hazardous substances: contaminated property: fentanyl cleanup.

Existing law provides that a person who is found to have operated a site for the purpose of manufacturing an illegal controlled substance or the precursor of an illegal controlled substance is the generator of a hazardous substance at, or released from, the site that is subject to removal action by the Department of Toxic Substances Control.

## Version chain

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

1. **02/22/19 - Introduced** (filed) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201920200AB1596&version=20190AB159699INT)
2. **04/03/19 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201920200AB1596&version=20190AB159698AMD)
3. **06/06/19 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201920200AB1596&version=20190AB159697AMD)
4. **08/30/19 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201920200AB1596&version=20190AB159696AMD)
5. **10/09/19 - Chaptered** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201920200AB1596&version=20190AB159694CHP)
6. **AB1596** (committee substitute) — [source](http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=201920200AB1596)
7. **09/16/19 - Enrolled** (enrolled) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201920200AB1596&version=20190AB159695ENR)

## Votes

- AB 1596 E.S. & T.M. Assembly Third Reading By QUIRK — **77–0** (pass) · lower
- 3rd Reading AB1596 E.S. & T.M. (Quirk) By Hill — **39–0** (pass) · upper
- Do pass, but first be re-referred to the Committee on [Appropriations] with the recommendation: To Consent Calendar — **7–0** (pass) · upper
- AB 1596 E.S. & T.M. Concurrence in Senate Amendments By QUIRK — **79–0** (pass) · lower
- Do pass and be re-referred to the Committee on [Appropriations] with recommendation: To Consent Calendar — **9–0** (pass) · lower
- Do pass as amended — **7–0** (pass) · upper
- Do pass. — **18–0** (pass) · lower
- Placed on suspense file — **7–0** (pass) · upper

## Sponsors

- Committee on Environmental Safety and Toxic Materials — primary (person)

## Timeline

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

- **2019-02-22** Introduced. To print. `introduction`
- **2019-02-23** From printer. May be heard in committee March 25.
- **2019-02-25** Read first time. `reading-1`
- **2019-03-18** Referred to Com. on E.S. & T.M. `referral-committee`
- **2019-04-03** From committee chair, with author's amendments: Amend, and re-refer to Com. on E.S. & T.M. Read second time and amended. `reading-1, reading-2, amendment-passage, amendment-introduction`
- **2019-04-04** Re-referred to Com. on E.S. & T.M. `referral-committee`
- **2019-04-10** From committee: Do pass and re-refer to Com. on APPR. with recommendation: To Consent Calendar. (Ayes 9. Noes 0.) (April 9). Re-referred to Com. on APPR. `committee-passage-favorable, committee-passage, referral-committee`
- **2019-05-08** In committee: Set, first hearing. Referred to APPR. suspense file. `referral-committee`
- **2019-05-16** From committee: Do pass. (Ayes 18. Noes 0.) (May 16). `committee-passage-favorable, committee-passage`
- **2019-05-20** Read second time. Ordered to third reading. `reading-1, reading-2`
- **2019-05-23** Read third time. Passed. Ordered to the Senate. (Ayes 77. Noes 0. Page 1902.) `passage, reading-3, reading-1`
- **2019-05-24** In Senate. Read first time. To Com. on RLS. for assignment. `reading-1`
- **2019-06-06** Referred to Com. on EQ. `referral-committee`
- **2019-06-06** From committee chair, with author's amendments: Amend, and re-refer to committee. Read second time, amended, and re-referred to Com. on EQ. `reading-1, reading-2, amendment-passage, referral-committee, amendment-introduction`
- **2019-06-20** From committee: Do pass and re-refer to Com. on APPR. with recommendation: To Consent Calendar. (Ayes 7. Noes 0.) (June 19). Re-referred to Com. on APPR. `committee-passage-favorable, committee-passage, referral-committee`
- **2019-07-01** In committee: Referred to APPR. suspense file. `referral-committee`
- **2019-08-30** From committee: Amend, and do pass as amended. (Ayes 7. Noes 0.) (August 30). `amendment-passage, committee-passage, amendment-introduction`
- **2019-08-30** Read second time and amended. Ordered returned to second reading. `amendment-passage, reading-1, reading-2`
- **2019-09-03** Read second time. Ordered to third reading. `reading-1, reading-2`
- **2019-09-06** Read third time. Passed. Ordered to the Assembly. (Ayes 39. Noes 0. Page 2607.). `passage, reading-3, reading-1`
- **2019-09-06** In Assembly. Concurrence in Senate amendments pending. May be considered on or after September 8 pursuant to Assembly Rule 77.
- **2019-09-10** Senate amendments concurred in. To Engrossing and Enrolling. (Ayes 79. Noes 0. Page 3248.). `amendment-passage, committee-passage-favorable`
- **2019-09-23** Enrolled and presented to the Governor at 3:30 p.m.
- **2019-10-09** Approved by the Governor. `executive-signature`
- **2019-10-09** Chaptered by Secretary of State - Chapter 691, Statutes of 2019.

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/fbe6453c-3587-48e4-9d60-1b19387b8872`. Confidence: reported (aggregated from official California legislature records).