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PM 2.5 -
Regulations (Federal Register)

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Description Date Bytes Type 
03/22/02- Federal Register Notice (03/07/2002) Federal Register Notice for the Agency Information Collection: Proposed Collection; Comment Request; Ambient Air Quality Surveillance. 03-22-02 39367
05/03/99- Federal Register Notice (05/03/99) "Ambient Air Monitoring Reference and Equivalent Methods: Designation of a New Reference Method". Notice of designation of new method RFPS-0499-129, "Rupprecht & Patashnick Company, Inc. Partisol Model 2000 RM-2.5 Audit Sampler". 05-03-99 30158
04/23/99- Federal Register Notice (04/22/99) "Revisions to Reference Method for the Determination of Fine Particulate Matter as PM2.5 in the Atmosphere" (Direct Final Rule). 04-22-99 78190
04/23/99- Federal Register Notice (04/22/99) "Revisions to Reference Method for the Determination of Fine Particulate Matter as PM2.5 in the Atmosphere" (Proposed Rule). 04-22-99 63889
03/11/99- Federal Register Notice "Ambient Air Monitoring Reference and Equivalent Methods: Designation of a New Reference Method". 03-11-99 21593
11/02/98- Federal Register Notice "Ambient Air Monitoring Reference and Equivalent Methods: Designation of a New Reference Method and Receipt of Three New Applications for Reference Method Determination". 10-30-98 27780
06/11/98- Federal Register Notice "Ambient Air Monitoring Reference and Equivalent Methods; Designation of Two Reference Methods and Two Equivalent Methods". 06-15-98 29212
04/16/98- Federal Register Notice "Ambient Air Monitoring Reference and Equivalent Methods; Designation of Three Reference Methods for PM2.5." 04-16-98 20153
40 CFR parts 50, 53 and 58: 02/17/98 Corrections Notice. 02-19-98 384806
40 CFR part 50, National Ambient Air Quality Standards for Particulate Matter; Final Rule. 02-19-98 106576
Final Particulate Matter NAAQS: Revisions to 40 CFR Part 50, including Revisions to Appendices K, L, M, and N. 07-18-97 1373408 
Particulate Matter Monitoring Requirements: Revisions to 40 CFR parts 53 and 58. 07-18-97 782724&
Supplemental Information and Request for Comments; PM2.5 Federal Reference Method. 07-21-97 8700


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