Volume 89 Issue 34 | p. 30 | Concentrates
Issue Date: August 22, 2011

Carbon Monoxide Standards Retained

Department: Government & Policy
News Channels: Environmental SCENE
Keywords: carbon monoxide, air, health

The existing national air quality standards for carbon monoxide adequately protect public health and the environment, EPA said last week in announcing its decision to retain the 40-year-old rules. Since 1980, levels of CO in the air have fallen by 80%, mostly as a result of motor vehicle emissions controls, the agency said. The current health standards are 9 ppm measured over eight hours and 35 ppm measured over one hour. “CO levels at . . .

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