---
type: "Bill"
title: "Greenhouse gases: cement sector: net-zero emissions strategy."
description: "The California Global Warming Solutions Act of 2006 requires the State Air Resources Board to ensure that statewide greenhouse gas emissions are reduced to at least 40% below the 1990 level by 2030. The act requires the state board to prepare and approve, and update at least once every 5 years, a scoping plan for achieving the maximum technologically feasible and cost-effective reductions in greenhouse gas emissions from sources or categories of sources of greenhouse gases by 2020 under the act, as provided."
jurisdiction: "us/states/ca"
legislature: "California Legislature"
session: "20212022"
identifier: "SB 596"
citation: "California SB 596 (20212022)"
classification: ["bill"]
subjects: ["Greenhouse gases: cement sector: net-zero emissions strategy."]
status: "enacted"
primary_sponsors: ["Becker"]
version_count: 9
action_count: 35
vote_count: 8
first_action: "2021-02-18"
last_action: "2021-09-23"
source: "openstates"
source_identifier: "ocd-bill/988b8d71-3bec-40c6-8ee4-9fbeefd52479"
source_url: "http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=202120220SB596"
source_hash: "c3867bf8e1ece5bdb4c2411967f26e012e65ec3b3cf331775e2b6be776f65ece"
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 SB 596 (20212022) — Greenhouse gases: cement sector: net-zero emissions strategy.

The California Global Warming Solutions Act of 2006 requires the State Air Resources Board to ensure that statewide greenhouse gas emissions are reduced to at least 40% below the 1990 level by 2030. The act requires the state board to prepare and approve, and update at least once every 5 years, a scoping plan for achieving the maximum technologically feasible and cost-effective reductions in greenhouse gas emissions from sources or categories of sources of greenhouse gases by 2020 under the act, as provided.

## Version chain

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

1. **02/18/21 - Introduced** (filed) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202120220SB596&version=20210SB59699INT)
2. **03/04/21 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202120220SB596&version=20210SB59698AMD)
3. **06/16/21 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202120220SB596&version=20210SB59697AMD)
4. **06/28/21 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202120220SB596&version=20210SB59696AMD)
5. **08/30/21 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202120220SB596&version=20210SB59695AMD)
6. **09/03/21 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202120220SB596&version=20210SB59694AMD)
7. **09/23/21 - Chaptered** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202120220SB596&version=20210SB59692CHP)
8. **SB596** (committee substitute) — [source](http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=202120220SB596)
9. **09/13/21 - Enrolled** (enrolled) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202120220SB596&version=20210SB59693ENR)

## Votes

- Do pass as amended and be re-referred to the Committee on [Appropriations] — **11–0** (pass) · lower
- Unfinished Business SB596 Becker et al. Concurrence — **29–9** (pass) · upper
- Placed on suspense file — **7–0** (pass) · upper
- Do pass, but first be re-referred to the Committee on [Appropriations] — **5–1** (pass) · upper
- SB 596 Becker Senate Third Reading By Muratsuchi — **74–2** (pass) · lower
- Do pass — **5–2** (pass) · upper
- 3rd Reading — **31–9** (pass) · upper
- Do pass as amended. — **13–3** (pass) · lower

## Sponsors

- Becker — primary (person)
- Wiener — coauthor (person)

## Timeline

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

- **2021-02-18** Introduced. Read first time. To Com. on RLS. for assignment. To print. `introduction, reading-1`
- **2021-02-19** From printer. May be acted upon on or after March 21.
- **2021-02-22** Art. IV. Sec. 8(a) of the Constitution dispensed with.
- **2021-02-22** (Ayes 32. Noes 4.)
- **2021-02-22** Joint Rule 55 suspended. (Ayes 32. Noes 4. Page 272.)
- **2021-03-03** Referred to Com. on RLS. `referral-committee`
- **2021-03-04** From committee with author's amendments. Read second time and amended. Re-referred to Com. on RLS. `amendment-passage, committee-passage, reading-1, reading-2, referral-committee`
- **2021-03-18** Re-referred to Com. on E.Q. `referral-committee`
- **2021-03-18** Set for hearing April 12.
- **2021-04-07** April 12 hearing postponed by committee.
- **2021-04-13** Set for hearing April 29.
- **2021-04-29** From committee: Do pass and re-refer to Com. on APPR. (Ayes 5. Noes 1. Page 985.) (April 29). Re-referred to Com. on APPR. `committee-passage, committee-passage-favorable, referral-committee`
- **2021-05-07** Set for hearing May 17.
- **2021-05-17** May 17 hearing: Placed on APPR suspense file.
- **2021-05-18** Set for hearing May 20.
- **2021-05-20** From committee: Do pass. (Ayes 5. Noes 2. Page 1197.) (May 20). `committee-passage, committee-passage-favorable`
- **2021-05-20** Read second time. Ordered to third reading. `reading-1, reading-2`
- **2021-05-24** Read third time. Passed. (Ayes 31. Noes 9. Page 1233.) Ordered to the Assembly. `passage, reading-1, reading-3`
- **2021-05-24** In Assembly. Read first time. Held at Desk. `reading-1`
- **2021-05-28** Referred to Com. on NAT. RES. `referral-committee`
- **2021-06-16** From committee with author's amendments. Read second time and amended. Re-referred to Com. on NAT. RES. `amendment-passage, committee-passage, reading-1, reading-2, referral-committee`
- **2021-06-24** From committee: Do pass as amended and re-refer to Com. on APPR. (Ayes 11. Noes 0.) (June 23). `amendment-passage, committee-passage, committee-passage-favorable`
- **2021-06-28** Read second time and amended. Re-referred to Com. on APPR. `amendment-passage, reading-1, reading-2, referral-committee`
- **2021-07-14** July 14 set for first hearing. Placed on suspense file.
- **2021-08-26** From committee: Do pass as amended. (Ayes 13. Noes 3.) (August 26). `amendment-passage, committee-passage, committee-passage-favorable`
- **2021-08-30** Read second time and amended. Ordered to second reading. `amendment-passage, reading-1, reading-2`
- **2021-08-31** Read second time. Ordered to third reading. `reading-1, reading-2`
- **2021-09-03** Read third time and amended. `amendment-passage, reading-1, reading-3`
- **2021-09-03** Ordered to third reading.
- **2021-09-08** Read third time. Passed. (Ayes 74. Noes 2. Page 2918.) Ordered to the Senate. `passage, reading-1, reading-3`
- **2021-09-08** In Senate. Concurrence in Assembly amendments pending.
- **2021-09-09** Assembly amendments concurred in. (Ayes 29. Noes 9. Page 2559.) Ordered to engrossing and enrolling. `amendment-passage, committee-passage-favorable`
- **2021-09-17** Enrolled and presented to the Governor at 1:30 p.m.
- **2021-09-23** Approved by the Governor. `executive-signature`
- **2021-09-23** Chaptered by Secretary of State. Chapter 246, Statutes of 2021. `became-law`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/988b8d71-3bec-40c6-8ee4-9fbeefd52479`. Confidence: reported (aggregated from official California legislature records).