federal_register: E9-15944
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| document_number | title | type | abstract | publication_date | pub_year | pub_month | html_url | pdf_url | agency_names | agency_ids | excerpts | regulation_id_numbers |
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| E9-15944 | Primary National Ambient Air Quality Standard for Nitrogen Dioxide | Proposed Rule | Based on its review of the air quality criteria for oxides of nitrogen and the primary national ambient air quality standard (NAAQS) for oxides of nitrogen as measured by nitrogen dioxide (NO<INF>2</INF>), EPA proposes to make revisions to the primary NO<INF>2</INF> NAAQS in order to provide requisite protection of public health. Specifically, EPA proposes to supplement the current annual standard by establishing a new short-term NO<INF>2</INF> standard based on the 3-year average of the 99th percentile (or 4th highest) of 1-hour daily maximum concentrations. EPA proposes to set the level of this new standard within the range of 80 to 100 ppb and solicits comment on standard levels as low as 65 ppb and as high as 150 ppb. EPA also proposes to establish requirements for an NO<INF>2</INF> monitoring network that will include monitors within 50 meters of major roadways. In addition, EPA is soliciting comment on an alternative approach to setting the standard and revising the monitoring network. Consistent with the terms of a consent decree, the Administrator will sign a notice of final rulemaking by January 22, 2010. | 2009-07-15 | 2009 | 7 | https://www.federalregister.gov/documents/2009/07/15/E9-15944/primary-national-ambient-air-quality-standard-for-nitrogen-dioxide | https://www.govinfo.gov/content/pkg/FR-2009-07-15/pdf/E9-15944.pdf | Environmental Protection Agency | 145 | Based on its review of the air quality criteria for oxides of nitrogen and the primary national ambient air quality standard (NAAQS) for oxides of nitrogen as measured by nitrogen dioxide (NO<INF>2</INF>), EPA proposes to make revisions to the primary... |