US EPA will maintain the current national air quality standards for carbon monoxide (CO) rather than create another major battle with Republicans in Congress over greenhouse gases under the Clean Air Act. EPA promises to gather additional data through more focused monitoring while it treads water on the issue.
The current health standards are 9 parts per million (ppm) measured over 8 hours, and 35 ppm measured over 1 hour. To ensure people are protected from high concentrations of CO and to develop better information about CO and its health impacts, EPA is proposing to revise the air monitoring requirements at some unknown date in the future.
The proposed changes would require a more focused monitoring network with CO monitors placed near highly trafficked roads in urban areas with populations of 1 million or more. The data from these sites would be available for scientific studies that could help inform future reviews of the standard.
EPA estimates that the proposal would require approximately 77 CO monitors in 53 urban areas. EPA expects that states would not need to purchase new monitoring equipment. They could relocate some of their existing CO monitors to the near-road monitoring stations already required in connection with the revised nitrogen dioxide standards issued in January 2010. CO monitors at the new locations would be required to be operational by January 1, 2013.
The proposed rule only addresses the primary CO standards and is consistent with the advice and recommendations from the agency’s independent science advisors, the Clean Air Act Scientific Advisory Committee.
CO is a colorless, odorless gas emitted from combustion processes. Nationally and, particularly in urban areas, the majority of CO emissions come from motor vehicles.
EPA will accept comments for 60 days after the proposed rule is published in the Federal Register. The Agency will hold a public hearing on this proposed rule on February 28, 2011, if EPA receives a request for one by February 18, 2011 EPA will take final action on this proposal by August 12, 2011.
More information: http://www.epa.gov/airquality/carbonmonoxide
The current health standards are 9 parts per million (ppm) measured over 8 hours, and 35 ppm measured over 1 hour. To ensure people are protected from high concentrations of CO and to develop better information about CO and its health impacts, EPA is proposing to revise the air monitoring requirements at some unknown date in the future.
The proposed changes would require a more focused monitoring network with CO monitors placed near highly trafficked roads in urban areas with populations of 1 million or more. The data from these sites would be available for scientific studies that could help inform future reviews of the standard.
EPA estimates that the proposal would require approximately 77 CO monitors in 53 urban areas. EPA expects that states would not need to purchase new monitoring equipment. They could relocate some of their existing CO monitors to the near-road monitoring stations already required in connection with the revised nitrogen dioxide standards issued in January 2010. CO monitors at the new locations would be required to be operational by January 1, 2013.
The proposed rule only addresses the primary CO standards and is consistent with the advice and recommendations from the agency’s independent science advisors, the Clean Air Act Scientific Advisory Committee.
CO is a colorless, odorless gas emitted from combustion processes. Nationally and, particularly in urban areas, the majority of CO emissions come from motor vehicles.
EPA will accept comments for 60 days after the proposed rule is published in the Federal Register. The Agency will hold a public hearing on this proposed rule on February 28, 2011, if EPA receives a request for one by February 18, 2011 EPA will take final action on this proposal by August 12, 2011.
More information: http://www.epa.gov/airquality/carbonmonoxide