Oil & Natural Gas Production, Processing, and Storage

This page last reviewed September 29, 2017

The California Global Warming Solutions Act of 2006 (AB 32) establishes a comprehensive program of regulatory and market mechanisms to achieve real, cost-effective, quantifiable reductions of greenhouse gases (GHG).  AB 32 charges the Air Resources Board (ARB) as the agency responsible for monitoring and regulating many GHG emission sources to reduce state GHG emissions to 1990 levels by 2020.  This is the main webpage for the Oil & Natural Gas Production, Processing, and Storage measure, intended to reduce GHG emissions from crude oil and natural gas operations.  For questions related to the program, please contact Joseph Fischer at (916) 445-0071.

Oil & Gas Methane Regulation Development:

Formal Oil and Gas Rulemaking Website

March 23, 2017 Board Hearing Staff Presentation

Pending Memoranda of Agreement with Air Districts: Goals and Process

External Peer Review of Flash Test Procedure

July 21, 2016 Staff Presentation

Background Materials for Proposed Oil & Gas Regulation

Workshops & Meetings

Standardized Regulatory Impact Assessment (SRIA)


"Enhanced Inspection & Maintenance for GHG and VOCs at Upstream Facilities," SAGE Environmental Consulting, December 2016

"Source Testing of Fugitive and Vented Emissions From Hydraulic Fracturing Operations and Wastewater Ponds Used in Crude Oil and Natural Gas Operations in California," SAGE Environmental Consulting, June 2016

Because of a limited sample size, this report did not estimate greenhouse gas, criteria pollutant, or toxic air contaminant emissions from well stimulation treatments.  However, an uncontrolled step in the well stimulation process was discovered: uncovered circulation tanks.  This source is being addressed in the proposed Oil & Gas Methane Regulation.

This study also examined a set of oil field produced water ponds.  These ponds may or may not have held produced water from a well that had been stimulated.  Regardless, no well stimulation chemicals were detected, but methane, carbon dioxide, non-methane hydrocarbon, and toxic air contaminant emissions were measured.  Again, due to a small sample size, ARB is proposing a new research study to get additional data from ponds, before deciding whether or not to proceed with possible control measures.

Recirculation Tank Emissions Testing, WSPA, October 2015

Methane and Carbon Dioxide Emissions from California Oil and Gas Operations, CSU Fullerton, June 2011

Crude Oil and Natural Gas Industry Survey:

Crude Oil and Natural Gas Industry Survey


ARB, CEC, and CPUC Joint Symposium: Methane Emissions from California's Natural Gas System: Challenges and Solutions

Development of Test Procedures for Oil & Gas Operations

Draft Oil Field Distributed Generation Assessment

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Local Air District Rules

For California air district rules and regulations regarding reduction of criteria pollutants, please see the District Rules Database.