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40 CFR Part 53 and 58
This area contains information on the Federal regulations governing many aspects of the ambient air monitoring program in the United States.
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- Ambient Air Monitoring Regulations: Corrections and Other Amendments: Fact Sheet (PDF)
- Ambient Air Monitoring Regulations: Corrections and Other Amendments: Direct Final Rule (PDF)
- Ambient Air Monitoring Regulations: Corrections and Other Amendments: Proposed Rule (PDF)
- PM2.5 Field Blank
Reporting to AQS Frequently Asked Questions (PDF)
- Clarification of Monitoring Rule Provisions Involving Comparisons to the NAAQS - Sampling Frequency and Minimum Monitoring Requirements (PDF)
- Listing of known corrections to the October 17,2006 (PDF) "Final - Revisions to Ambient Air Monitoring Regulations."
- Copy of the correct version of the October 17,2006 (PDF) "Final - Revisions to Ambient Air Monitoring Regulations."
- Copy of the October 17, 2006 Final - Revisions to Ambient Air Monitoring Regulations (PDF) NOTE: This version contains Federal Register typesetting errors.
- Copy of the January 16, 2006 Proposal - Revisions to Ambient Air Monitoring Regulations (PDF)
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Go to GPO copy of parts 53 and 58.
- Recently Promulgated Regulations - Parts 50, 53, 58
- Proposed Regulations - Parts 50, 53, 58