&EPA
   United States
   Environmental Protection
   Agency
                2008 vs 2009 SO2 Comparisons, Quarter 1  (January 1- March 31)
                           Emissions Changes at Facilities (Coal Units Only)
                                                              Source: 2008 data are final, 2009 are
                                                              preliminary data submitted to EPA from
                                                              sources as of February 18, 2010. EPA will
                                                              update maps as it corrects data over time.
SO2 Chang* (tons)
 .  <1,000
 •  1,000 to 10,000
 • 10,000 to 25,000
• Over 25,000

 Decrease

 Increase

 Not Large Change
                                           Note: This map displays changes occurring between the first quarter of 2008 and the first quarter of 2009;
                                           many facilities already have advanced controls and low emission rates and therefore show no change. If a
                                           unit has not yet reported first quarter 2009 emissions data to EPA, it is not included in this map.	

-------
&EPA
   United States
   Environmental Protection
   Agency
                2008 vs 2009  SO2 Comparisons, Quarter 1 (January 1- March 31)
                      Emissions Rate Changes at Facilities (Coal Units Only)
                                                             Source: 2008 data are final, 2009 are
                                                             preliminary data submitted to EPA from
                                                             sources as of February 18, 2010. EPA will
                                                             update maps as it corrects data over time.
SO2Rat*Chang«(%)
 .  <50%
 *  50% to 85%
 •  Over 85%

 Decrease
 Increase
 Not Large Change
                                          Note: This map displays changes occurring between the first quarter of 2008 and the first quarter of 2009;
                                          many facilities already have advanced controls and low emission rates and therefore show no change. If a
                                          unit has not yet reported first quarter 2009 emissions data to EPA, it is not included in this map.	

-------
&EPA
   United States
   Environmental Protection
   Agency
                 2008 vs 2009 SO2 Comparisons,  Quarter 1  (January 1-  March 31)
                           Heat  Input Changes at Facilities (Coal Units Only)
                                                               Source: 2008 data are final, 2009 are
                                                               preliminary data submitted to EPA from
                                                               sources as of February 18, 2010. EPA will
                                                               update maps as it corrects data over time.
Heat Input Chang* (mmBtu)
 .  < 1,000,000
 # 1,000,000 to 5,000,000
 • 5,000,000 to 10,000,000
 • Over 10,000,000
 Decrease
      rise
      irge Change
                                           Note: This map displays changes occurring between the first quarter of 2008 and the first quarter of 2009;
                                           many facilities already have advanced controls and low emission rates and therefore show no change. If a
                                           unit has not yet reported first quarter 2009 emissions data to EPA, it is not included in this map.	

-------
&EPA
   United States
   Environmental Protection
   Agency
                    2008 vs 2009 SO2 Comparisons,  Quarter 2 (April 1- June  30)
                           Emissions Changes at Facilities (Coal Units Only)
                                                               Source: 2008 data are final, 2009 are
                                                               preliminary data submitted to EPA from
                                                               sources as of February 18, 2010. EPA will
                                                               update maps as it corrects data over time.
SO2 Chang* (tons)
 .  <1,000
 •  1,000 to 10,000
 • 10,000 to 25,000
• Over 25,000

 Decrease

 Increase

 Not Large Change
                                           Note: This map displays changes occurring between the second quarter of 2008 and the second quarter of
                                           2009; many facilities already have advanced controls and low emission rates and therefore show no change.
                                           If a unit has not yet reported second quarter 2009 emissions data to EPA, it is not included in this map.	

-------
&EPA
   United States
   Environmental Protection
   Agency
                   2008 vs 2009 SO2 Comparisons, Quarter 2 (April  1- June 30)
                       Emissions Rate Changes at Facilities (Coal Units Only)
                                                              Source: 2008 data are final, 2009 are
                                                              preliminary data submitted to EPA from
                                                              sources as of February 18, 2010. EPA will
                                                              update maps as it corrects data over time.
SO2Rat*Chang«(%)
 .  <50%
 *  50% to 85%
 •  Over 85%

 Decrease
 Increase
 Not Large Change
                                          Note: This map displays changes occurring between the second quarter of 2008 and the second quarter of
                                          2009; many facilities already have advanced controls and low emission rates and therefore show no change.
                                          If a unit has not yet reported second quarter 2009 emissions data to EPA, it is not included in this map.	

-------
&EPA
   United States
   Environmental Protection
   Agency
                    2008 vs 2009 SO2 Comparisons, Quarter 2 (April 1- June 30)
                           Heat Input Changes at Facilities  (Coal Units Only)
                                                                Source: 2008 data are final, 2009 are
                                                                preliminary data submitted to EPA from
                                                                sources as of February 18, 2010. EPA will
                                                                update maps as it corrects data over time.
Heat Input Chang* (mmBtu)
 .  < 1,000,000
 # 1,000,000 to 5,000,000
 • 5,000,000 to 10,000,000
 • Over 10,000,000
 Decrease
      rise
      irge Change
                                           Note: This map displays changes occurring between the second quarter of 2008 and the second quarter of
                                           2009; many facilities already have advanced controls and low emission rates and therefore show no change.
                                           If a unit has not yet reported second quarter 2009 emissions data to EPA, it is not included in this map.	

-------
&EPA
   United States
   Environmental Protection
   Agency
                2008 vs 2009 SO2 Comparisons, Quarter 3 (July  1- September 30)
                          Emissions Changes at Facilities (Coal Units Only)
                                                              Source: 2008 data are final, 2009 are
                                                              preliminary data submitted to EPA from
                                                              sources as of February 18, 2010. EPA will
                                                              update maps as it corrects data over time.
SO2 Chang* (tons)
 .  <1,000
 •  1,000 to 10,000
 • 10,000 to 25,000
• Over 25,000

 Decrease

 Increase

 Not Large Change
                                          Note: This map displays changes occurring between the third quarter of 2008 and the third quarter of 2009;
                                          many facilities already have advanced controls and low emission rates and therefore show no change. If a
                                          unit has not yet reported third quarter 2009 emissions data to EPA, it is not included in this map.	

-------
&EPA
   United States
   Environmental Protection
   Agency
               2008 vs 2009 SO2 Comparisons, Quarter 3 (July 1- September 30)
                       Emissions  Rate Changes at Facilities (Coal Units Only)
                                                             Source: 2008 data are final, 2009 are
                                                             preliminary data submitted to EPA from
                                                             sources as of February 18, 2010. EPA will
                                                             update maps as it corrects data over time.
SO2Rat*Chang«(%)
 .  <50%
 *  50% to 85%
 •  Over 85%

 Decrease
 Increase
 Not Large Change
                                         Note: This map displays changes occurring between the third quarter of 2008 and the third quarter of 2009;
                                         many facilities already have advanced controls and low emission rates and therefore show no change. If a
                                         unit has not yet reported third quarter 2009 emissions data to EPA, it is not included in this map.	

-------
&EPA
   United States
   Environmental Protection
   Agency
                2008 vs 2009 SO2 Comparisons, Quarter 3 (July  1- September 30)
                           Heat Input Changes at Facilities (Coal  Units Only)
                                                               Source: 2008 data are final, 2009 are
                                                               preliminary data submitted to EPA from
                                                               sources as of February 18, 2010. EPA will
                                                               update maps as it corrects data over time.
Heat Input Chang* (mmBtu)
 .  < 1,000,000
 #  1,000,000 to 5,000,000
 • 5,000,000 to 10,000,000
 • Over 10,000,000
 Decrease
      rise
      irge Change
                                           Note: This map displays changes occurring between the third quarter of 2008 and the third quarter of 2009;
                                           many facilities already have advanced controls and low emission rates and therefore show no change. If a
                                           unit has not yet reported third quarter 2009 emissions data to EPA, it is not included in this map.	

-------
&EPA
   United States
   Environmental Protection
   Agency
             2008 vs 2009 SO2 Comparisons, Quarter 4 (October 1- December 31)
                          Emissions Changes at Facilities (Coal Units Only)
                                                             Source: 2008 data are final, 2009 are
                                                             preliminary data submitted to EPA from
                                                             sources as of February 18, 2010. EPA will
                                                             update maps as it corrects data over time.
SO2 Chang* (tons)
 .  <1,000
 •  1,000 to 10,000
 • 10,000 to 25,000
• Over 25,000

 Decrease

 Increase

 Not Large Change
                                          Note: This map displays changes occurring between the fourth quarter of 2008 and the fourth quarter of
                                          2009; many facilities already have advanced controls and low emission rates and therefore show no change.
                                          If a unit has not yet reported fourth quarter 2009 emissions data to EPA, it is not included in this map.	

-------
&EPA
   United States
   Environmental Protection
   Agency
             2008 vs 2009 SO2 Comparisons, Quarter 4 (October 1- December 31)
                      Emissions Rate Changes at Facilities (Coal Units Only)
                                                            Source: 2008 data are final, 2009 are
                                                            preliminary data submitted to EPA from
                                                            sources as of February 18, 2010. EPA will
                                                            update maps as it corrects data over time.
SO2Rat*Chang«(%)
 .  <50%
 *  50% to 85%
 •  Over 85%

 Decrease
 Increase
 Not Large Change
                                         Note: This map displays changes occurring between the fourth quarter of 2008 and the fourth quarter of
                                         2009; many facilities already have advanced controls and low emission rates and therefore show no change.
                                         If a unit has not yet reported fourth quarter 2009 emissions data to EPA, it is not included in this map.	

-------
&EPA
   United States
   Environmental Protection
   Agency
              2008 vs 2009 SO2 Comparisons, Quarter 4 (October 1- December 31)
                           Heat Input Changes at Facilities  (Coal Units Only)
                                                              Source: 2008 data are final, 2009 are
                                                              preliminary data submitted to EPA from
                                                              sources as of February 18, 2010. EPA will
                                                              update maps as it corrects data over time.
Heat Input Chang* (mmBtu)
 .  < 1,000,000
 #  1,000,000 to 5,000,000
 • 5,000,000 to 10,000,000
 • Over 10,000,000
 Decrease
      rise
      irge Change
                                          Note: This map displays changes occurring between the fourth quarter of 2008 and the fourth quarter of
                                          2009; many facilities already have advanced controls and low emission rates and therefore show no change.
                                          If a unit has not yet reported fourth quarter 2009 emissions data to EPA, it is not included in this map.	

-------