National and Regional Summary of Alpine Geophysics/Environ Emissions Trends Reports, Highlights of emission trend data for NOx, SO2, and VOCs, Presentation to NARUC Subcommittee on Clean Coal and Carbon Sequestration July 22, 2012 Paul Loeffelman, Managing Director, Corporate External Affairs, American Electric Power

Five Regions Analyzed

Condensed Emission Categories Coal-based Electric Generating Units (EGUs) Highway vehicles Off-highway vehicles Industrial fuel combustion & processes All other

Total U.S. NOx Emissions (In millions of tons/yr.)

Share of U.S. NOx Emissions by Source Category,

Percent Change in U.S. NOx Emissions,

Percent Change in Regional Coal-Based EGU NOx Emissions, Note: NE EGUs were subject to the OTC NOx MOU requiring 55%/65% NOx reductions from 1990 levels in 1999.

Total U.S. SO 2 Emissions (In millions of tons/yr.)

Percent Change in U.S. SO2 Emissions,

Percent Change in Regional Coal-Based EGU SO2 Emissions,

Percent Change in Regional VOC Emissions

Percent Share of U.S. VOC Emissions by Source Category, 2010

U.S. NOx and VOC Emissions (Total manmade ozone precursor emissions) (In millions of tons/yr.)

Share of Total U.S. NOx and VOC Emissions by Source Category,

Percent Change in U.S. Total NOx and VOC Emissions,

Coal-Based EGU Percent of Regional NOx and VOC Emissions,

Data report sources Analyses performed by Greg Stella, Alpine Geophysics phone , Technical reports from Alpine analyses for national, regional and states’ trends available at One page reports for states from Alpine analyses available from USB drives