a pp/y	2013 vs 2014 Comparisons, Quarter 1 (January 1 - March 31)

United States	S02 Emission Rate Changes at Facilities (Coal Units Only)

Agen?ynmentalPr0,ect,on	With 2,500 Tons Change in the Quarter Between Years

Note: This map displays changes occurring between the first quarter of 2013 and the first quarter of 2014; many facilities already have advanced
controls and low emission rates and therefore show no change. If a unit has not yet reported first quarter 2014 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.

Not Large Change

S02 Rate Change (%)

•	<25%

•	25% to 50%

•	Over 50%

Decrease
Increase

Source: 2013 data are final; 2014 data are
preliminary data submitted to EPA from
sources as of November 3,2014. EPA will
update maps as it corrects data over time.


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a pp/y	2013 vs 2014 Comparisons, Quarter 1 (January 1 - March 31)

United States	NOx Emission Rate Changes at Facilities (Coal Units Only)

Agency"10"'3'Pro,ect,on	With 1,000 Tons Change in the Quarter Between Years

Source: 2013 data are final; 2014 data are
preliminary data submitted to EPA from
sources as of November 3,2014. EPA will
update maps as it corrects data over time.

Note: This map displays changes occurring between the first quarter of 2013 and the first quarter of 2014; many facilities already have advanced
controls and low emission rates and therefore show no change. If a unit has not yet reported first quarter 2014 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.

Decrease
Increase

Not Large Change

NOx Rate Change (%)

•	<25%

•	25% to 50%

•	Over 50%


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q pp/y	2013 vs 2014 Comparisons, Quarter 2 (April 1 - June 30)

United States	S02 Emission Rate Changes at Facilities (Coal Units Only)

Agen?ynmentalPr0,ect,on	With 2,500 Tons Change in the Quarter Between Years

Note: This map displays changes occurring between the second quarter of 2013 and the second quarter of 2014; many facilities already have advanced
controls and low emission rates and therefore show no change. If a unit has not yet reported second quarter 2014 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

Source: 2013 data are final; 2014 data are
preliminary data submitted to EPA from
sources as of November 3,2014. EPA will
update maps as it corrects data over time.


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q pp/y	2013 vs 2014 Comparisons, Quarter 2 (April 1 - June 30)

United States	NOx Emission Rate Changes at Facilities (Coal Units Only)

Agencymen*alPro,ect,on	With 1,000 Tons Change in the Quarter Between Years

Note: This map displays changes occurring between the second quarter of 2013 and the second quarter of 2014; many facilities already have advanced
controls and low emission rates and therefore show no change. If a unit has not yet reported second quarter 2014 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

Source: 2013 data are final; 2014 data are
preliminary data submitted to EPA from
sources as of November 3,2014. EPA will
update maps as it corrects data over time.


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q pp/y	2013 vs 2014 Comparisons, Quarter 3 (July 1 - September 30)

United States	S02 Emission Rate Changes at Facilities (Coal Units Only)

Agen?ynmentalPr0,ect,on	With 2,500 Tons Change in the Quarter Between Years

Note: This map displays changes occurring between the third quarter of 2013 and the third quarter of 2014; many facilities already have advanced
controls and low emission rates and therefore show no change. If a unit has not yet reported third quarter 2014 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

Source: 2013 data are final; 2014 data are
preliminary data submitted to EPA from
sources as of November 3,2014. EPA will
update maps as it corrects data over time.


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q pp/y	2013 vs 2014 Comparisons, Quarter 3 (July 1 - September 30)

United States	NOx Emission Rate Changes at Facilities (Coal Units Only)

Agencymen*alPro,ect,on	With 1,000 Tons Change in the Quarter Between Years

Note: This map displays changes occurring between the third quarter of 2013 and the third quarter of 2014; many facilities already have advanced
controls and low emission rates and therefore show no change. If a unit has not yet reported third quarter 2014 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

Source: 2013 data are final; 2014 data are
preliminary data submitted to EPA from
sources as of November 3,2014. EPA will
update maps as it corrects data over time.


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