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SB-1039 • 2026

Air resources: refinery-related community air monitoring system.

Air resources: refinery-related community air monitoring system.

Education
Passed Legislature

This bill passed both chambers and reached final enrollment, even if later executive action is not shown here.

Sponsor
Grove
Last action
2026-05-14
Official status
May 14 hearing: Held in committee and under submission.
Effective date
Not listed

Plain English Breakdown

The official summary text indicates a prohibition on requiring monitoring of substances that cannot be generated by the monitored facility, which differs from the candidate explanation's statement about imposing state-mandated local programs. This discrepancy needs clarification.

Refinery Air Monitoring System

The bill requires air monitoring systems near refineries to include processes allowing refineries to provide substantial evidence to exclude specific pollutants from being monitored if they cannot be produced by the facility.

What This Bill Does

  • Requires guidance for fence-line monitoring systems to allow refineries to provide substantial evidence to exclude specific pollutants from monitoring.
  • Authorizes regional air districts to exclude pollutants from monitoring based on substantial evidence provided by refineries.
  • Prohibits monitoring of substances that cannot be generated by the monitored facility.
  • Imposes a state-mandated local program requiring air districts to revise their guidance for fence-line monitoring systems.
  • Specifies that no reimbursement is required for implementing these changes.

Who It Names or Affects

  • Petroleum refineries
  • Regional air pollution control districts and regional air quality management districts

Terms To Know

Fence-line monitoring system
A system that monitors emissions near the boundary of a petroleum refinery.
Substantial evidence
Evidence that is relevant, material, credible, and of minimum necessary quantum to support a conclusion.

Limits and Unknowns

  • The bill does not specify how air districts will determine what constitutes 'substantial evidence'.
  • It's unclear if the changes will lead to improved or less effective monitoring overall.
  • No details are provided on how refineries will prove that certain pollutants cannot be generated by their facilities.

Bill History

  1. 2026-05-14 California Legislative Information

    May 14 hearing: Held in committee and under submission.

  2. 2026-05-08 California Legislative Information

    Set for hearing May 14.

  3. 2026-04-20 California Legislative Information

    April 20 hearing: Placed on APPR. suspense file.

  4. 2026-04-10 California Legislative Information

    Set for hearing April 20.

  5. 2026-04-07 California Legislative Information

    April 13 hearing postponed by committee.

  6. 2026-03-27 California Legislative Information

    Set for hearing April 13.

  7. 2026-03-19 California Legislative Information

    Read second time and amended. Re-referred to Com. on APPR.

  8. 2026-03-18 California Legislative Information

    From committee: Do pass as amended and re-refer to Com. on APPR. (Ayes 4. Noes 0. Page 3600.) (March 18).

  9. 2026-02-25 California Legislative Information

    Set for hearing March 18.

  10. 2026-02-18 California Legislative Information

    Referred to Com. on E.Q.

  11. 2026-02-12 California Legislative Information

    From printer. May be acted upon on or after March 14.

  12. 2026-02-11 California Legislative Information

    Introduced. Read first time. To Com. on RLS. for assignment. To print.

Official Summary Text

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.

Current Bill Text

Read the full stored bill text
Download Bill PDF