John Egan, ALL4's Technical Director, attended the NCASI Northern Regional meeting in Portland, Maine on May 12 - 13. John gave a timely presentation regarding a Mill PSD permitting project that experienced the immediate impacts of the new 1-hour NO2 NAAQS that took effect on April 12. John also attended the Northern Regional Committee meeting after being selected by NCASI as a new member of that planning group.
Modeling for NAAQS Part 2: How to select the appropriate output for SO2
The U.S. National Ambient Air Quality Standards (NAAQS) for 1-hour SO2, 1-hour NO2, and 24-hour PM2.5 use a very particular format. It is very important for all modelers (both within and outside of the U.S.) to understand how AERMOD handles this. In particular, U.S. users need to be familiar with the special tools available to help them analyze these results, and non-U.S. modelers (or anyone using AERMOD for a purpose other than the U.S. NAAQS standards) need to know how to disable AERMOD`s U.S. NAAQS-specific...
Environmental and economic goals not in conflict, new study claims
New research claims that air pollution policy reduces the extent to which population growth in urban areas results in increased pollution emissions, without disrupting the economic growth resulting from this urbanisation. More than half of the world’s population currently lives in urban areas, and the United Nations predicts another 2.5 billion people will move to cities by 2050. However, the exact relationship between population growth and pollution increase is still unknown. This in turn causes problems...
EPA Approves Iowa’s State Implementation Plan for Reducing Particulate Matter in Muscatine’s Air
The U.S. Environmental Protection Agency (EPA) has approved Iowa’s state implementation plan (SIP) to reduce fine particle emissions in Muscatine County. The Clean Air Act requires states to develop plans to attain and maintain the national air standards in all areas of the state. These plans, known as SIPs, are developed by state and local air quality management agencies and submitted to EPA for approval. Because the Muscatine area has struggled with consistently attaining the fine particulate matter...
BREEZE AERMOD 7.4 Enhancements Streamline U.S. NAAQS Modeling
BREEZE®, the market-leading air dispersion modeling software used by environmental professionals around the world, released a new version of its AERMOD air dispersion modeling software. This new version includes the updated 11353 U. S. EPA executable that addresses recently defined NAAQS standards, namely for NO2 and SO2 daily maximum concentrations. Streamline NO2, SO2, and PM2.5 modeling for U.S. NAAQS with Version 7.4 new features that: Integrate the U.S. EPA version 11353 released December 19,...
U.S. EPA issues permit to palmdale power plant, requires limits for greenhouse gas emissions / use of innovative solar technology results in one of the cleanest, most efficient fossil fuel plants in nation
The U.S. Environmental Protection Agency recently issued a permit to the City of Palmdale, Calif. for the construction and operation of the Palmdale Hybrid Power Project. The 570 megawatt natural gas-fired power plant, with 50 megawatts of solar energy generation, is the first of its kind in the nation required to limit greenhouse gas emissions. Commercial operation is planned for the summer of 2013. “Palmdale’s use of solar technology is a model for new electric power plants across the nation,”...