The document discusses emissions rates from power plants before and after installing low NOx burners and separated overfire air technologies. It lists the top ten power plants by NOx emission rates in 2008 both before and after retrofitting with these technologies. The document also discusses EPA health standards for NOx and particulate matter and ozone levels measured in some national parks from 2006-2008.
4. Old Dirty Plants (uncontrolled) Cleaner Retrofitted Plants New Power Plants Emissions Age of Plant
5. 2008 NOx Rates With NGS LNB Performance Rank Plant State NOx (lb/MMBtu) Rank Plant State NOx (lb/MMBtu) 1 Riverside MN 0.99 1 Riverside MN 0.99 2 Bay Front WI 0.94 2 Bay Front WI 0.94 3 Lakeside IL 0.91 3 Lakeside IL 0.91 4 Sheldon NE 0.90 4 Sheldon NE 0.90 5 Chamois MO 0.87 5 Chamois MO 0.87 6 Niles OH 0.83 6 Niles OH 0.83 7 Coyote ND 0.77 7 Coyote ND 0.77 8 Alma WI 0.76 8 Alma WI 0.76 9 Streeter IA 0.74 9 Streeter IA 0.74 10 Dubuque IA 0.73 10 Dubuque IA 0.73 ... ... ... ... ... ... ... ... 156 Navajo AZ 0.35 ... ... ... ... ... ... ... ... ... ... ... ... 321 Navajo AZ 0.20
6. EPA Health Standard In 2010 – EPA introduced a new short term, hourly NO2 standard of 100 ppb (3 year average of 98% percentile). In 2010 - Page measured 28 ppb in regard to the new hourly standard
7. EPA Air Quality Index, adjusted by the American Lung Association Page - 2.6 ug/m3 annual average 24 hour PM 2.5 Concentration Air Quality Index 0.0 ug/m 3 to 15.4 ug/m 3 Good (Green) 15.4 ug/m 3 to 35.0 ug/m 3 Moderate (Yellow) 35.1 ug/m 3 to 65.4 ug/m 3 Unhealthy for Sensitive Groups (Orange) 65.5 ug/m 3 to 150.4 ug/m 3 Unhealthy (Red) 150.5 ug/m 3 to 250.4 ug/m 3 Very Unhealthy (Purple) Greater than or equal to 250.5 ug/m 3 Hazardous (Maroon)
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10. Fourth Highest Daily Maximum 8-Hour Average Ozone Concentrations (ppb)in various National Parks for 2006–2008
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Editor's Notes
On September 21, 2006, the EPA announced a revised 24-hour National Ambient Air Quality standard for PM2.5, changing the standard to 35 μg/m3 from 65 μg/m3. As of December 2009, the EPA had not yet announced changes to the Air Quality Index based on the new standard. The Lung Association adjusted the level of the category “Unhealthy for Sensitive Groups” to include the new standard, making that category range from 35.1 μg/m3 to 65.4 μg/m3.