---
type: "Bill"
title: "Renewable energy resources: biomethane."
description: "(1) Existing law requires the Public Utilities Commission (PUC) to specify the maximum amount of vinyl chloride that may be found in landfill gas. Existing law prohibits a gas producer from knowingly selling, supplying, or transporting to a gas corporation, and a gas corporation from knowingly purchasing, landfill gas containing vinyl chloride in a concentration exceeding the maximum amount determined by the PUC. Existing law requires a person who produces, sells, supplies, or releases landfill gas for sale offsite to a gas corporation to sample and test, bimonthly, the gas at the point of distribution for chemicals known to the state to cause cancer or reproductive toxicity."
jurisdiction: "us/states/ca"
legislature: "California Legislature"
session: "20112012"
identifier: "AB 1900"
citation: "California AB 1900 (20112012)"
classification: ["bill"]
subjects: ["Renewable energy resources: biomethane."]
status: "enacted"
primary_sponsors: ["Gatto"]
version_count: 13
action_count: 47
vote_count: 11
first_action: "2012-02-22"
last_action: "2012-09-27"
source: "openstates"
source_identifier: "ocd-bill/bef39187-cbeb-47e3-8f9d-7562445247da"
source_url: "http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=201120120AB1900"
source_hash: "e12ea1f8c6eb5d033d7cf475f9acfa7b7e634e729303b16fe50b9d3da6588f12"
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 1900 (20112012) — Renewable energy resources: biomethane.

(1) Existing law requires the Public Utilities Commission (PUC) to specify the maximum amount of vinyl chloride that may be found in landfill gas. Existing law prohibits a gas producer from knowingly selling, supplying, or transporting to a gas corporation, and a gas corporation from knowingly purchasing, landfill gas containing vinyl chloride in a concentration exceeding the maximum amount determined by the PUC. Existing law requires a person who produces, sells, supplies, or releases landfill gas for sale offsite to a gas corporation to sample and test, bimonthly, the gas at the point of distribution for chemicals known to the state to cause cancer or reproductive toxicity.

## Version chain

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

1. **02/22/12 - Introduced** (filed) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201120120AB1900&version=20110AB190099INT)
2. **04/11/12 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201120120AB1900&version=20110AB190098AMD)
3. **04/19/12 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201120120AB1900&version=20110AB190097AMD)
4. **05/02/12 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201120120AB1900&version=20110AB190096AMD)
5. **05/25/12 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201120120AB1900&version=20110AB190095AMD)
6. **06/14/12 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201120120AB1900&version=20110AB190094AMD)
7. **08/06/12 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201120120AB1900&version=20110AB190093AMD)
8. **08/22/12 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201120120AB1900&version=20110AB190092AMD)
9. **08/24/12 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201120120AB1900&version=20110AB190091AMD)
10. **08/31/12 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201120120AB1900&version=20110AB190090AMD)
11. **09/27/12 - Chaptered** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201120120AB1900&version=20110AB190088CHP)
12. **AB1900** (committee substitute) — [source](http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=201120120AB1900)
13. **09/11/12 - Enrolled** (enrolled) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201120120AB1900&version=20110AB190089ENR)

## Votes

- From Committee: That the measure be returned to the Senate floor for consideration. — **6–0** (pass) · upper
- 3rd Reading AB1900 Gatto By Wright — **31–0** (pass) · upper
- Do pass as amended. — **17–0** (pass) · lower
- AB 1900 GATTO Concurrence in Senate Amendments — **77–2** (pass) · lower
- Do pass, but re-refer to the Committee on Environmental Quality. — **11–0** (pass) · upper
- Do pass as amended and be re-referred to the Committee on Appropriations. — **6–3** (pass) · lower
- Do pass. — **7–0** (pass) · upper
- Do pass as amended, and re-refer to the Committee on Appropriations. — **7–0** (pass) · upper
- Do pass as amended and be re-referred to the Committee on Natural Resources. — **11–1** (pass) · lower
- AB 1900 GATTO Assembly Third Reading — **72–1** (pass) · lower
- Placed on Appropriations Suspense file. — **7–0** (pass) · upper

## Sponsors

- Gatto — primary (person)
- Cannella — coauthor (person)
- Chesbro — author (person)
- Gordon — coauthor (person)
- Liu — coauthor (person)
- Roger Hernández — author (person)
- Skinner — coauthor (person)

## Timeline

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

- **2012-02-22** Read first time. To print. `reading-1`
- **2012-02-23** From printer. May be heard in committee March 24.
- **2012-03-19** Referred to Coms. on U. & C. and NAT. RES. `referral-committee`
- **2012-04-11** From committee chair, with author's amendments: Amend, and re-refer to Com. on U. & C. Read second time and amended. `reading-2, amendment-introduction, reading-1, amendment-passage`
- **2012-04-12** Re-referred to Com. on U. & C. `referral-committee`
- **2012-04-18** From committee: Do pass as amended and re-refer to Com. on NAT. RES. (Ayes 11. Noes 1.) (April 16). `amendment-passage, committee-passage, committee-passage-favorable`
- **2012-04-19** Read second time and amended. `reading-2, reading-1, amendment-passage`
- **2012-04-23** Re-referred to Com. on NAT. RES. `referral-committee`
- **2012-05-01** From committee: Do pass as amended and re-refer to Com. on APPR. (Ayes 6. Noes 3.) (April 26). `amendment-passage, committee-passage, committee-passage-favorable`
- **2012-05-02** Read second time and amended. `reading-2, reading-1, amendment-passage`
- **2012-05-03** Re-referred to Com. on APPR. `referral-committee`
- **2012-05-16** In committee: Set, first hearing. Referred to APPR. suspense file. `referral-committee`
- **2012-05-25** From committee: Do pass as amended. (Ayes 17. Noes 0.) (May 25). `amendment-passage, committee-passage, committee-passage-favorable`
- **2012-05-25** Read second time and amended. Ordered to second reading. `reading-2, reading-1, amendment-passage`
- **2012-05-29** Read second time. Ordered to third reading. `reading-2, reading-1`
- **2012-05-31** Read third time. Passed. Ordered to the Senate. (Ayes 72. Noes 1. Page 5187.) `reading-3, reading-1, passage`
- **2012-06-04** In Senate. Read first time. To Com. on RLS. for assignment. `reading-1`
- **2012-06-14** Referred to Coms. on E., U. & C. and E.Q. `referral-committee`
- **2012-06-14** From committee chair, with author's amendments: Amend, and re-refer to committee. Read second time, amended, and re-referred to Com. on E., U. & C. `reading-2, amendment-introduction, reading-1, amendment-passage, referral-committee`
- **2012-06-26** From committee: Do pass and re-refer to Com. on E.Q. (Ayes 11. Noes 0.) (June 25). Re-referred to Com. on E.Q. `referral-committee, committee-passage, committee-passage-favorable`
- **2012-08-06** From committee: Do pass as amended and re-refer to Com. on APPR. (Ayes 7. Noes 0.) (July 2). `amendment-passage, committee-passage, committee-passage-favorable`
- **2012-08-06** Read second time and amended. Re-referred to Com. on APPR. `reading-2, reading-1, amendment-passage, referral-committee`
- **2012-08-06** In committee: Referred to APPR. suspense file. `referral-committee`
- **2012-08-16** From committee: Do pass. (Ayes 7. Noes 0.) (August 16). `committee-passage, committee-passage-favorable`
- **2012-08-20** Read second time. Ordered to third reading. `reading-2, reading-1`
- **2012-08-22** Read third time and amended. Ordered to second reading. `reading-3, reading-1, amendment-passage`
- **2012-08-23** Read second time. Ordered to third reading. `reading-2, reading-1`
- **2012-08-24** Read third time and amended. Ordered to second reading. `reading-3, reading-1, amendment-passage`
- **2012-08-27** Read second time. Ordered to third reading. `reading-2, reading-1`
- **2012-08-27** Re-referred to Com. on RLS. pursuant to Senate Rule 29.10. `referral-committee`
- **2012-08-27** From committee: Be re-referred to Com. on E.Q. pursuant to Senate Rule 29.10. (Ayes 5. Noes 0.) Re-referred to Com. on E.Q. `referral-committee, committee-passage`
- **2012-08-28** From committee: Return to Senate floor for consideration. (Ayes 6. Noes 0.) (August 28). `committee-passage`
- **2012-08-28** Ordered to third reading.
- **2012-08-31** Re-referred to Com. on RLS. `referral-committee`
- **2012-08-31** (Ayes 24. Noes 12. Page 5066.)
- **2012-08-31** Senate Rule 29.3(b) suspended. (Ayes 24. Noes 12. Page 5066.)
- **2012-08-31** From committee chair, with author's amendments: Amend, and re-refer to committee. Read second time, amended, and re-referred to Com. on RLS. `reading-2, amendment-introduction, reading-1, amendment-passage, referral-committee`
- **2012-08-31** Withdrawn from committee.
- **2012-08-31** Ordered to third reading.
- **2012-08-31** (Ayes 23. Noes 13. Page 5077.)
- **2012-08-31** Read third time. Passed. Ordered to the Assembly. (Ayes 31. Noes 0. Page 5091.). `reading-3, reading-1, passage`
- **2012-08-31** In Assembly. Concurrence in Senate amendments pending.
- **2012-08-31** Assembly Rule 63 suspended. (Page 6801.)
- **2012-08-31** Senate amendments concurred in. To Engrossing and Enrolling. (Ayes 77. Noes 2. Page 6801.). `committee-passage-favorable, amendment-passage`
- **2012-09-13** Enrolled and presented to the Governor at 3:30 p.m.
- **2012-09-27** Approved by the Governor. `executive-signature`
- **2012-09-27** Chaptered by Secretary of State - Chapter 602, Statutes of 2012.

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/bef39187-cbeb-47e3-8f9d-7562445247da`. Confidence: reported (aggregated from official California legislature records).