Senate BillIntroducedHealth and Safety
SB 1039: Air resources: refinery-related community air monitoring system.
What SB 1039 does, verified May 16, 2026
This bill aims to amend the existing air resources law to require a refinery-related community air monitoring system near each refinery. The system must include equipment capable of measuring compounds emitted from refinery processes. The bill also seeks to revise guidance for fence-line monitoring systems, allowing air districts to exclude pollutants for monitoring if substantial evidence supports certain considerations. This change would require air districts to revise their guidance, making the bill a state-mandated local program. The bill provides an exception for reimbursement, stating that no reimbursement is required for a specific reason.
Bill journey
1IntroducedCurrent
2In CommitteePending
3First Chamber FloorPending
4Second ChamberPending
5GovernorPending
6ChapteredPending
Last action: May 14 hearing: Held in committee and under submission. (2026-05-14)Alert me
Author and sponsors
Full contact details, staff, and committees with Connect, $16/moUnlockRecent actions12 total · showing 5
| May. 14, 2026 | May 14 hearing: Held in committee and under submission. |
| May. 08, 2026 | Set for hearing May 14. |
| Apr. 20, 2026 | April 20 hearing: Placed on APPR. suspense file. |
| Apr. 10, 2026 | Set for hearing April 20. |
| Apr. 07, 2026 | April 13 hearing postponed by committee. |
Latest bill textAmended version, March 19, 2026 · 945 words
| Amended IN Senate March 19, 2026 |
CALIFORNIA LEGISLATURE— 2025–2026 REGULAR SESSION
Senate Bill
No. 1039
| Introduced by Senator Grove |
February 11, 2026 |
An act to amend Section 42705.6 of the Health and Safety Code, relating to air resources.
LEGISLATIVE COUNSEL'S DIGEST
SB 1039, as amended, Grove. Air resources: refinery-related community air monitoring system.
Existing law requires a refinery-related community air monitoring system to be installed near each refinery, as provided, and requires the monitoring system to include equipment capable of measuring compounds emitted to the atmosphere from refinery processes. Existing law requires owners or operators of petroleum refineries to develop, install, operate, and maintain a fence-line monitoring system in accordance with guidance developed by the appropriate regional air pollution control district or regional air quality management district.
This bill would prohibit require guidance adopted to implement the fence-line monitoring system from requiring the system to monitor emissions of substances that cannot be generated by the facility that is being monitored. to include a process for a petroleum refinery to provide substantial evidence to the appropriate air district to exclude a pollutant for monitoring in a fence-line monitoring system and would authorize the air district to exclude a pollutant for monitoring at a petroleum refinery fence-line monitoring system if the air district determines that substantial evidence supports certain considerations. Because the bill would require air districts to revise their guidance related to the fence-line monitoring system, this bill would impose a state-mandated local program.
The California Constitution requires the state to reimburse local agencies and school districts for certain costs mandated by the state. Statutory provisions establish procedures for making that reimbursement.
This bill would provide that no reimbursement is required by this act for a specified reason.
The people of the State of California do enact as follows:
SECTION 1.
Section 42705.6 of the Health and Safety Code is amended to read:42705.6.
(a) For purposes of this section, the following definitions apply:(1) “Refinery-related community air monitoring system” means equipment that measures and records air pollutant concentrations in the ambient air at or near sensitive receptor locations near a petroleum refinery and that may be useful for estimating associated pollutant exposures and health risks and in determining trends in air pollutant levels over time.
(2) “Fence-line monitoring system” means equipment that measures and records air pollutant concentrations at or adjacent to a petroleum refinery and that may be useful for detecting or estimating the quantity of fugitive emissions, gas leaks, and other air emissions from the refinery.
(b) Notwithstanding Section 42708, and on or before January 1, 2020, a refinery-related community air monitoring system shall be installed near each refinery that is consistent with the requirements and guidance applicable to the siting of air quality monitors as established by the federal Environmental Protection Agency and that meets all of the following requirements:
(1) A district shall design, develop, install, operate, and maintain the refinery-related community air monitoring system, which shall be operated and maintained in accordance with guidance from the appropriate district. A district may contract with a third party to implement this paragraph.
(2) The refinery-related community air monitoring system shall include equipment capable of measuring compounds emitted to the atmosphere from refinery processes, as determined by the appropriate district.
(c) (1) On or before January 1, 2020, the owner or operator of a petroleum refinery shall develop, install, operate, and maintain a fence-line monitoring system in accordance with guidance developed by the appropriate district.
(2) Guidance adopted pursuant to this section shall not require a fence-line monitoring system to monitor emissions of substances that cannot be generated by the facility that is being monitored. include a process for a petroleum refinery to provide substantial evidence to the appropriate district to exclude a pollutant for monitoring in a fence-line monitoring system.
(3) Recognizing that emissions vary among refineries, a district may exclude a pollutant for monitoring at a petroleum refinery fence-line monitoring system if the district determines that substantial evidence supports any of the following:
(A) The pollutant would not be released through routine and nonroutine operations, activities, and processes of the petroleum refinery.
(B) Realtime monitoring of the pollutant is technologically infeasible.
(C) Technical justifications deemed appropriate by the district.
(d) The district and the owner or operator of a petroleum refinery shall collect real-time data from the refinery-related community air monitoring system and the fence-line monitoring system and shall maintain records of that data. To the extent feasible, the data generated by these systems shall be provided to the public as quickly as possible in a publicly accessible format.
(e) Guidance developed by a district pursuant to this section shall take into account technological capabilities and incorporate input from affected parties and, to the extent feasible, shall be informed by refinery-related guidance in the monitoring plan prepared pursuant to subdivision (b) of Section 42705.5.
(f) (1) Except as provided in paragraph (2), the owner or operator of a petroleum refinery shall be responsible for the costs associated with implementing this section.
(2) To the extent a refinery-related community air monitoring system is intentionally used by a district to monitor emissions from sources under its jurisdiction other than a petroleum refinery, the district shall ensure the costs of the system are shared in a reasonably equitable manner.
SEC. 2.
No reimbursement is required by this act pursuant to Section 6 of Article XIII B of the California Constitution because a local agency or school district has the authority to levy service charges, fees, or assessments sufficient to pay for the program or level of service mandated by this act, within the meaning of Section 17556 of the Government Code.Text of SB 1039 as amended, from the official record. Connect Plus keeps every version and highlights what changed.Compare versions