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Carbon Monoxide (CO) Standards -
Documents from Previous Reviews

Note: EPA no longer updates this information, but it may be useful for historical purposes. See the Carbon Monoxide Standards Home Page for documents from the current review of the Carbon Monoxide NAAQS.

Criteria Document

• Air Quality Criteria for Carbon Monoxide (U.S.EPA, 2000)
• Air Quality Criteria for Carbon Monoxide (U.S.EPA, 1991) (PDF) (757pp, 43 MB)

Exposure Assessment

• Estimation of Carbon Monoxide Exposures and Associated Carboxyhemoglobin Levels in Denver Residents Using pNEM/CO (Version 2.0) - Mar 1999 (PDF) (208pp, 1.8 MB)

Staff Paper

• Review of the National Ambient Air Quality Standards for Carbon Monoxide Assessment of Scientific and Technical Information: OAQPS Staff Paper - Aug 1992 (PDF) (94pp, 4.3 MB)
  

Federal Register Notices

• CO NAAQS Final Rulemaking Federal Register Notice - Aug 1994 (PDF) (12pp, 1.4 MB)

CASAC Documents

• CASAC Documents

File Utilities

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