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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 | |