Refinery Air Monitoring


This page was last updated September 2017

Latest Information

Real-Time Refinery Fenceline and Community Monitoring Data

Refinery Emergency Air Monitoring Assessment Report: Objective 2 (September 2017)

CARB's Monitoring and Laboratory Division and the California Air Pollution Control Officers Association (CAPCOA) have completed the second volume of the Refinery Emergency Air Monitoring Assessment Report. The September 2017 report, Objective 2: Evaluation of Air Monitoring Capabilities, Gaps, and Potential Enhancements is now available online.

The report provides recommendations aimed to strike a balance between local implementation and State oversight of a program to improve emergency and routine air monitoring at California's major refineries and surrounding communities. The report recommendations will guide the efforts of a proposed interagency refinery monitoring working group comprised of local air district and California Air Resources Board staff that will develop guidance tailored for each locality in three areas:

Air Monitoring Technology Modeling Coordination

The refinery-focused guidance of this report may serve as a template for similar air monitoring around other types of industrial sources that pose a risk to nearby communities.


 Information By Region


The buttons below allow you to access information by region. Information includes: refinery rules, incident reporting, hazardous materials programs, risk management plans, sheltering in-place, fenceline and community air monitoring, network and emergency response plans, refinery websites, etc.


Bay Area San Joaquin Valley Central Coast Southern California

 California Refineries: Interactive Map


This interactive map allows you to view refinery information and pertinent air monitoring data using Google Maps. Click on a refinery to see site information. On the Air Monitoring Stations overlay, you can select ARB and local Air District monitoring sites for current site-specific air quality data. Layers showing County or Air District boundaries may also be displayed.
- Refineries - Air Monitoring Stations



 ARB Response Plans and Reports

California Refineries Outreach Programs and Emergency Response Plans


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A 2003 overview of the California refining industry that provides a general characterization of processes, operations and throughputs for individual refineries, as well as detailed information on each refinery’s community outreach programs, community alert systems and emergency preparedness and response programs.

Refinery Air Monitoring Assessment Plan Released (July 2013)


ARB and the California Air Pollution Control Officers Association released a plan to assess emergency air monitoring capabilities in communities near petroleum refineries throughout the State. This assessment is now in progress.

The 15-month project will be conducted collaboratively with local air monitoring agencies, emergency response agencies, and refineries. It will evaluate and make recommendations on the potential need for additional resources including equipment, services, staffing, and training to support local air emergency response programs.

This plan supports the mission of the Governor’s Interagency Working Group on Refinery Safety to improve public and worker safety through enhanced oversight of refineries, and to strengthen emergency preparedness in anticipation of any future incident. The Working Group consisted of participants from 13 agencies and departments, as well as the Governor’s office.

The plan, entitled Air Monitoring for Accidental Refinery Releases: Assessment of Capabilities and Potential Improvements Project Plan - July 2013 is available here.

Refinery Safety Report Released (February 2014)


The Governor's Interagency Working Group on Refinery Safety released its final report, Improving Public and Worker Safety at Oil Refineries and it is available here.

California Refinery Emergency Air Monitoring Capabilities Report Released (May 2015)

ARB’s Monitoring and Laboratory Division and the California Air Pollution Control Officers Association have completed the first volume of the Refinery Emergency Air Monitoring Assessment Report. The May 2015 report, “Objective 1: Delineation of Existing Capabilities” is now available online.

The report provides a comprehensive inventory of emergency air monitoring assets and capabilities located in and around California’s fifteen major oil refineries. It serves as the basis for the ongoing assessment and guideline development phases of the project.

To view this report, please select the links below:




 Information by Region - Bay Area

 Information by Region - San Joaquin Valley

 Information by Region - Central Coast

 Information by Region - Southern California

 Other Helpful Information

General Information

General Refinery Monitoring Information

ARB List Serve for Refineries

  • If you would like to receive email updates on State refinery regulations, you can sign-up here.  
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