OAR Policy and Guidance Metarecord
National Ambient Air Quality Standards: Particulate Matter Monitor Collocation Requirements: Direct Final Rule with Parallel Proposal
|Signed by: Christine T. Whitman
Signature Date: 12/18/02
Emissions, Monitoring, and Analysis Division (OAQPS) / Peter Tsirigotis
Proposed & Final Preambles & Rules,
EPA Document Number:
EPA is taking direct final action (with a parallel proposal) to amend the national ambient air quality standards for particulate matter. This rule reduces to 15% the requirement that reporting organizations collocate 25% of State and local air monitoring station (SLAMS) sites with a second sampler in order to estimate precision at a reporting organization level. This file is the text of the direct final rule.