U.S. EPA’s Final PM2.5 Designations
Posted: October 6th, 2009
U.S. EPA has promulgated the final nonattainment area designations for the 24-hour National Ambient Air Quality Standard (NAAQS) for particulate matter with an aerodynamic diameter of less than 2.5 microns (PM2.5). PM2.5 is a regulated air pollutant with annual and […]
Read articleU.S. EPA Proposes NESHAP for Chemical Preparations Industry Area Sources
Posted: August 30th, 2009
On August 5, 2009, U.S. EPA published a proposal for the control of hazardous air pollutants (HAPs) from the chemical preparations industry area source category. This source category consists of industrial operations that mix, mill, blend, and/or extrude chemicals that […]
Read articleProposed Revision to NO2 NAAQS Could Pose Problems Under PSD
Posted: August 23rd, 2009
In the July 2009 issue of 4 The Record, ALL4 included a summary of U.S. EPA’s announcement concerning a proposed new short-term (1-hour) National Ambient Air Quality Standard (NAAQS) for nitrogen dioxide (NO2). The proposed standard will likely range between 150 µg/m3 and 188 µg/m3. […]
Read articleUpdate: PM2.5 New Source Review Regulations
Posted: August 18th, 2009
On May 16, 2008 U.S. EPA issued a final rule amending the New Source Review (NSR) regulations to add requirements related to particulate matter with an aerodynamic diameter of less than 2.5 microns (PM2.5). ALL4’s PM2.5 Team published 4 The Record articles […]
Read articleU.S. EPA Proposes Ozone Season Extension
Posted: August 14th, 2009
On July 16, 2009, U.S. EPA proposed revisions to its ambient ozone (O3) monitoring network design requirements. The revisions are in response to the amended primary and secondary National Ambient Air Quality Standards (NAAQS) for O3 that were promulgated on […]
Read articleU.S. EPA Proposes a Short-Term NO2 NAAQS
Posted: July 19th, 2009
In the more than 200 air quality modeling analyses that ALL4 meteorologists have conducted, demonstrating compliance with the annual nitrogen dioxide (NO2) National Ambient Air Quality Standard (NAAQS) of 53 parts per billion (ppbv) has rarely been very difficult. The […]
Read articleCourt Rules on Phase 2 Ozone Rule
Posted: July 11th, 2009
On June 10, 2009, the U.S. Circuit Court of Appeals for the District of Columbia remanded (without vacatur) two areas of the Final Rule To Implement the 8-Hour Ozone National Ambient Air Quality Standard – Phase 2 (Phase 2 Rule) […]
Read articleDo You Need A Quality Assurance Performance Plan (QAPP)?
Posted: July 3rd, 2009
The proposed Mandatory Greenhouse Gas (GHG) Reporting Rule (40 CFR Part 98) issued in March 2009 would require the economy-wide reporting of emissions data from facilities or sources that emit 25,000 metric tons or more per year of GHG emissions. […]
Read articleNJDEP Consideration of Health Risk from Internal Combustion Engines
Posted: June 4th, 2009
The New Jersey Department of Environmental Protection’s (NJDEP’s) Subchapter 17 rules require facilities to consider air toxics when installing or modifying sources of air emissions. NJDEP has alerted facilities through their quarterly Industrial Stakeholder Group meeting that existing internal combustion […]
Read articleNew U.S. EPA Administration Reconsidering NSR Rules
Posted: May 29th, 2009
On April 24, 2009, U.S. EPA sent out three separate letters in response to requests it had received to consider various apsects of the New Source Review (NSR) air permit rules that had been promulgated during the latter stages of the Bush […]
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