SB 30: Diesel-powered on-track equipment: decommissioning: resale and transfer restrictions. - California

07/16/25 - Amended Assembly → 09/12/25 - Enrolled · 5 edits · Sep 12, 2025

MODERATE

The enrolled version of SB 30 removed three of five exemption criteria that previously allowed public entities to transfer decommissioned diesel-powered rail equipment. Specifically, it eliminated the requirement to certify a net air quality benefit, the obligation to post supporting studies on a website, and the requirement that recipients of Tier 2 equipment agree to make emissions-reducing modifications. It also changed 'public meeting' to 'public hearing' for transaction authorization and removed two legislative findings about CARB regulations and state climate investments.

Scope change

The bill's practical scope was narrowed: by removing three of five exemption criteria, it became significantly easier for public entities to sell or transfer decommissioned diesel-powered rail equipment, weakening the environmental protections originally intended. The core prohibition remains but the path to an exception is now much simpler - only requiring that the equipment meet federal Tier 2/3/4 standards (or equivalent) and that the transaction be approved at a public hearing.

REQUIREMENT

Removed the requirement that a public entity certify the transfer will lead to a net air quality benefit at the receiving location. This was one of the main environmental safeguards in the bill.

Removed the requirement that, for Tier 2 equipment specifically, the receiving entity must agree in any purchase contract to make feasible modifications to reduce emissions.

Changed the authorization requirement from a 'public meeting' to a 'public hearing,' which may carry different procedural implications for public participation.

ENFORCEMENT

Removed the requirement that the public entity post any information or studies documenting its net air quality benefit analysis on its website, eliminating a key transparency and accountability mechanism.

SCOPE

Removed legislative finding (e) referencing the State Air Resources Board's 2023 In-Use Locomotive Regulation and finding (g) about state investments in greenhouse gas reduction, narrowing the stated policy context of the bill.

09/12/25 - Enrolled → 10/13/25 - Chaptered · 2 edits · Oct 13, 2025

MINOR

SB 30 transitioned from its enrolled form to its final chaptered law form after gubernatorial approval on October 13, 2025. No substantive policy changes were made; the legislative text (definitions, prohibition on transferring decommissioned diesel-powered on-track equipment, and exemptions) is identical between versions. The only differences are formatting: removal of Senate/Assembly passage pages, addition of the chapter number (735), the governor's approval date, and standard chaptered-law headers.

TECHNICAL

Chapter number 735 assigned and gubernatorial approval date (October 13, 2025) added to the document.

Senate and Assembly passage pages with blank date/time fields and the Private Secretary of the Governor transmittal section were removed as part of converting to chaptered law format.

10/13/25 - Chaptered → SB30 · 1 edit

MINOR

No substantive policy changes were made between these two versions. The diff reflects only a change in document format from a printed chaptered layout (with page numbers and centered headers) to a web-based rendering of the same bill text, complete with navigation menus, search tools, and version history links.

TECHNICAL

The document was reformatted from a traditional printed chapter layout into a web-based bill text display. All legislative content (findings, definitions, prohibition, and exceptions) is identical in both versions.

05/05/25 - Amended Senate → 07/16/25 - Amended Assembly · 4 edits · Jul 16, 2025

MODERATE

The Assembly amendment broadens the exemptions available to public entities that want to transfer decommissioned diesel-powered rail equipment, adds a new co-author, and tightens the public authorization requirement. Most significantly, the exemption now covers not only EPA-designated Tier 2/3/4 equipment but also equipment producing equivalent emissions or with the diesel engine removed, making it far easier for entities to legally transfer such equipment.

Scope change

The bill's scope is effectively narrowed by specifying 'ownership' transfers, while the exemption criteria are broadened to include emissions-equivalent equipment and engine-removed equipment, making it easier for public entities to transfer decommissioned diesel rail equipment legally.

SCOPE

The prohibition now specifically targets transferring 'ownership' of the equipment rather than the equipment itself, which could allow transfers of possession or use without a change in ownership title.

ELIGIBILITY

New exemption sub-criteria added: equipment that produces emissions equivalent to Tier 2/3/4 levels (even if not formally designated in those tiers) and equipment from which the diesel engine has been removed now qualify for the transfer exemption.

REQUIREMENT

The public authorization requirement was changed from a 'public meeting' to a 'public hearing,' imposing a more formal procedural standard on the transferring entity.

TECHNICAL

Senator Arreguin was added as a co-author of the bill.

03/26/25 - Amended Senate → 05/05/25 - Amended Senate · 4 edits · May 5, 2025

MODERATE

The May 5, 2025 amendment adds a new exemption (subdivision (c)) to the bill's core prohibition on public entities transferring decommissioned diesel-powered on-track equipment. The exemption allows transfers if the equipment meets EPA Tier 2, 3, or 4 emissions standards, the transaction is authorized in a public meeting, the entity certifies a net air quality benefit, relevant studies are posted online, and (for Tier 2 equipment) the buyer agrees to make feasible emissions-reducing modifications. This shifts the bill from a blanket ban to a conditional prohibition.

Scope change

The bill's scope narrowed from a complete prohibition on transferring decommissioned diesel-powered on-track equipment to a conditional prohibition that permits transfers when the equipment meets federal emissions tier standards and the public entity demonstrates a net air quality benefit with public transparency requirements.

SCOPE

New subdivision (c) creates an exemption allowing public entities to sell, donate, or transfer decommissioned diesel-powered on-track equipment if five criteria are all met: EPA Tier 2/3/4 designation, public meeting authorization, certification of net air quality benefit, website publication of supporting information, and (for Tier 2 only) a contractual commitment by the receiving entity to make feasible emissions-reducing modifications.

Subdivision (b) now begins with 'Except as provided in subdivision (c),' making the prohibition conditional rather than absolute.

DEFINITION

The definition of 'diesel-powered on-track equipment' was narrowed by removing the phrase 'alone or coupled to others,' which had described how the equipment is operated on rails.

TECHNICAL

Finding (b) removed the specific reference to 'seaports, railyards, and other locations,' replacing it with the more general phrase 'locations that are near where people work and live.'

02/11/25 - Amended Senate → 03/26/25 - Amended Senate · 5 edits · Mar 26, 2025

MODERATE

SB 30 was revised to remove a placeholder 'legislative intent' section that merely expressed the Legislature's intention to enact future legislation restricting resale of decommissioned diesel trains. The bill now directly prohibits public entities from selling, donating, or transferring decommissioned diesel-powered on-track equipment for continued use. The fiscal committee designation changed from 'no' to 'yes,' indicating the amendment introduced new fiscal implications requiring review.

SCOPE

Removed Section 1, which stated only that it was the intent of the Legislature to enact subsequent legislation to restrict resale of decommissioned diesel trains and rolling stock. This placeholder language is gone, meaning the bill no longer defers action to future legislation.

The bill title was shortened, removing the 'Transportation: diesel trains and rolling stock' framing and keeping only 'Diesel-powered on-track equipment: decommissioning: resale and transfer restrictions.'

REQUIREMENT

The operative prohibition in Section 99153.5(b) now stands as the primary mechanism of the bill without being preceded by a separate intent-only section. The bill directly prohibits public entities from selling, donating, or transferring decommissioned diesel-powered on-track equipment for continued use.

FISCAL

Fiscal committee review changed from 'no' to 'yes,' indicating the amended version now has fiscal implications that require committee analysis.

TECHNICAL

Minor grammatical fix in the definition of 'diesel-powered on-track equipment': changed 'is operated on stationary rails' to 'that is operated on stationary rails.'

12/02/24 - Introduced → 02/11/25 - Amended Senate · 5 edits · Feb 11, 2025

MODERATE

SB 30 was transformed from a mere statement of legislative intent into an operative law that actually prohibits public entities from selling, donating, or transferring decommissioned diesel-powered on-track equipment for continued use. The amended version adds Section 99153.5 to the Public Utilities Code with specific definitions and a binding prohibition, plus a findings section documenting the health and environmental harms of diesel locomotives. This is a significant escalation from aspirational language to enforceable regulation.

Scope change

The bill expanded from a non-binding statement of legislative intent with no operative effect into an enforceable prohibition under the Public Utilities Code applicable to all public entities that own diesel-powered on-track equipment and decommission it.

REQUIREMENT

Added Section 99153.5(b) to the Public Utilities Code, which prohibits any public entity that owns diesel-powered on-track equipment from selling, donating, or otherwise transferring that equipment for continued use after decommissioning it. This is the core operative provision of the bill.

DEFINITION

Added three definitions: 'continued use' (operation of the diesel engine as an internal combustion engine), 'decommission' (permanently ceasing service when replaced with lower-emission equipment), and 'diesel-powered on-track equipment' (any locomotive or rolling stock operated on stationary rails with a diesel engine).

SCOPE

Added a legislative findings and declarations section (Section 1) with seven subsections documenting the health impacts of diesel emissions, the disproportionate burden on communities near rail operations, CARB's 2023 In-Use Locomotive Regulation, Senate Resolution 34 on climate restoration, and the state's obligation to reduce greenhouse gas emissions.

The bill changed from a non-binding statement of intent to enact future legislation into an actual binding prohibition codified in the Public Utilities Code. The original intent language was retained but moved to a later section (Section 3).

FISCAL

Fiscal committee review changed from 'no' to 'yes,' indicating the amended bill now has fiscal implications requiring fiscal analysis.

Diesel-powered on-track equipment: decommissioning: resale and transfer restrictions.

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