k rn/y 2011 vs 2012 Comparisons, Quarter 1 (January 1 - March 31) S02 Emission Rate Changes at Facilities (Coal Units Only) United States Environmental Protection Agency With 2,500 Tons Change in the Quarter Between Years Source: 2011 data are final, 2012 are preliminary data submitted to EPA from sources as of August 1,2012. EPA will update maps as it corrects data over time. Note: This map displays changes occurring between the first quarter of 2011 and the first quarter of 2012; many facilities already have advanced controls and low emission rates and therefore show no change. If a unit has not yet reported first quarter 2012 emissions data to EPA, it is not included in this map. In areas with a dense concentration of facilities, the facilities on the map may overlap and some may be impossible to see. S02 Rate Change (%) . <25% • 25% to 50% • Over 50% Decrease Increase Not Large Change ------- > rn/v 2011 vs 2012 Comparisons, Quarter 1 (January 1 - March 31) NOx Emission Rate Changes at Facilities (Coal Units Only) United States Environmental Protection Agency With 1,000 Tons Change in the Quarter Between Years Source: 2011 data are final, 2012 are preliminary data submitted to EPA from sources as of August 1,2012. EPA will update maps as it corrects data over time. Note: This map displays changes occurring between the first quarter of 2011 and the first quarter of 2012; many facilities already have advanced controls and low emission rates and therefore show no change. If a unit has not yet reported first quarter 2012 emissions data to EPA, it is not included in this map. In areas with a dense; concentration of facilities, the facilities on the map may overlap and some maybe impossible to see. Not Large Change NOx Rate Change (%) • <25% • 25% to 50% • Over 50% Decrease Increase ------- k CDA 2011 vs 2012 Comparisons, Quarter 2 (April 1 - June 30) S02 Emission Rate Changes at Facilities (Coal Units Only) United States Environmental Protection Agency With 2,500 Tons Change in the Quarter Between Years S02 Rate Change (%) • <25% • 25% to 50% • Over 50% Decrease Increase Not Large Change Source: 2011 data are final, 2012 are preliminary data submitted to EPA from sources as of August 1,2012. EPA will update maps as it corrects data over time. Note: This map displays changes occurring between the second quarter of 2011 and the second quarter of 2012; many facilities already have advanced controls and low emission rates and therefore show no change. If a unit has not yet reported second quarter 2012 emissions data to EPA, it is not included in this map. In areas with a dense concentration of facilities, the facilities on the map may overlap and some may be impossible to see. ------- k CDA 2011 vs 2012 Comparisons, Quarter 2 (April 1 - June 30) NOx Emission Rate Changes at Facilities (Coal Units Only) United States Environmental Protection Agency With 1,000 Tons Change in the Quarter Between Years Source: 2011 data are final, 2012 are preliminary data submitted to EPA from sources as of August 1,2012. EPA will update maps as it corrects data over time. Note: This map displays changes occurring between the second quarter of 2011 and the second quarter of 2012; many facilities already have advanced controls and low emission rates and therefore show no change. If a unit has not yet reported second quarter 2012 emissions data to EPA, it is not included in this map. In areas with a dense concentration of facilities, the facilities on the map may overlap and some may be impossible to see. NOx Rate Change (%) • <25% • 25% to 50% • Over 50% Decrease Increase Not Large Change ------- |