An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »


Chevron USA Clean Air Act Settlement

The U.S. Justice Department, the Environmental Protection Agency (EPA) and the U.S. Attorney, San Francisco, announced a comprehensive Clean Air Act settlement with Chevron U.S.A. Inc. The settlement is expected to reduce harmful air emissions by almost 10,000 tons per year from five U.S. petroleum refineries that represent more than five percent of the total refining capacity in the United States.

The states of Hawaii, Mississippi, and Utah and the Bay Area Air Quality Management District in California are joining the settlement, which is part of EPA's national effort to reduce air emissions from refineries.

A consent decree filed October 16, 2003 in U.S. District Court in San Francisco, Calif., will require Chevron to spend an estimated $275 million to install and implement innovative control technologies to reduce emissions at its refineries. Chevron's actions under this agreement will reduce annual emissions of nitrogen oxides (NOx) by more than 3,300 tons and sulfur dioxide (SO2) by nearly 6,300 tons. The air pollutants addressed by today's agreements can cause serious respiratory problems and exacerbate cases of childhood asthma.

"The emissions reductions required by this settlement will lead to cleaner air and significant environmental and public health benefits," said Assistant Attorney General Thomas L. Sansonetti. "We expect to continue our strong enforcement efforts and see to it that other refiners will follow suit by improving environmental controls to reduce harmful emissions."

To meet obligations under EPA's New Source Review program, Chevron will cut emissions significantly from its largest emitting units through the use of innovative technologies. In addition, under the negotiated settlement, Chevron will upgrade its leak detection and repair practices, implement programs to minimize flaring of hazardous gases, reduce emissions from its sulphur recovery plants and adopt strategies to ensure the proper handling of hazardous benzene wastes at each refinery. The affected Chevron refineries are located in Richmond and El Segundo, Calif., Pascagoula, Miss., Salt Lake City, Utah and Kapolei, Hawaii.

Chevron also will pay a $3.5 million civil penalty and spend more than $4 million on further emissions controls and other environmental projects in communities around the company's refineries. Part of the penalty is to resolve claims for hazardous substance release reporting violations at its El Segundo, Calif., refinery. The states of Hawaii, Mississippi, and Utah and the Bay Area Air Quality Management District will share in the cash penalties and the benefits of the environmental projects to be performed by Chevron.

This agreement is the latest in a series of multi-issue, multi-facility settlements reached by EPA under its Petroleum Refinery Initiative. Two earlier, EPA and the Justice Department announced Clean Air Act settlements with Coastal Eagle Point Oil Company, Ergon-West Virginia Inc. and Ergon Refining Inc., and CHS that will reduce refinery emissions by nearly 4,000 tons per year in five states. In the prior three years, the United States has reached similar agreements with other major refiners, including Motiva Enterprises, Equilon and Deer Park Refining, Marathon Ashland Petroleum, Koch Petroleum Group, BP Exploration & Oil, Conoco, and Navajo Refining. These settlements provide for a comprehensive, cooperative approach to addressing environmental problems across the industry. To date, settlements under this initiative are reducing pollution at 42 refineries across the United States that account for nearly 40 percent of domestic refining capacity.

The proposed consent decree is subject to a 30-day public comment period.

For additional information, contact:

Patrick W. Foley
Senior Environmental Engineer
U.S. Environmental Protection Agency (2242A)
1200 Pennsylvania Ave., N.W.
Washington, DC 20460-0001
(202) 564-7978

Top of Page