Carbon Monoxide Standard

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Latest Developments…

    The Environmental Protection Agency Feb. 11 proposed increased monitoring for carbon monoxide near busy roadways, but otherwise offered no revisions to the ambient air quality standards for the pollutant. The carbon monoxide standards last were reviewed in 1994. Under the proposed rule, EPA would require states to increase monitoring of carbon monoxide in urban centers that have a population of 1 million or more. The carbon monoxide monitors would be paired with monitors for emissions of nitrogen dioxide. The agency estimates the rule would add 77 monitors near roadways in 53 cities. The proposal would affect provisions in 40 CFR 50, 53, and 58, and the monitors near roadways would be required to be operational by Jan. 1, 2013. The agency was under a court-ordered deadline to sign the proposed rule by Jan. 28 and is required to issue the final rule by Aug. 12, 2011.
-- You can read the full text of the proposed rule in the Federal Register Archive
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Did you know…?
    Several environmental groups sued EPA in 2007 in the U.S. District Court for the Northern District of Columbia , alleging the agency failed to review the carbon monoxide standards every five years as required by the Clean Air Act.
-- Read more in Air Pollution Control Guide on the carbon monoxide standard

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