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Tracking Maryland's Air Pollution

By Capital News Service and Maryland Newsline staffs
Sunday, April 29, 2001

WASHINGTON - Maryland posted a slight drop in overall air pollution over the last four years, according to a Capital News Service analysis of the Maryland Department of the Environment's annual emissions certification reports for facilities with either a state air quality permit or a federal Clean Air Act operating permit.



Year 1996 1997 1998 1999
No. of Facilities Permitted

486

521

526

520

Volatile Organic Compounds*

9,505

9,738

9,374

8,249

Nitrogen Oxides*

134,417

138,124

149,460

133,867

Hazardous Air Pollutants*

5,133

5,138

4,620

4,728

Particulate Matter*

10,686

11,758

11,486

9,664

Sulfur Dioxide*

287,258

299,535

328,491

320,121

Carbon Monoxide*

168,731

178,853

139,321

119,064

Total Emissions*

615,730

643,146

642,752

595,693

*All pollutants are measured in tons.

SOURCES: Maryland Department of the Environment; Bethlehem Steel reports

Copyright © 2001 University of Maryland College of Journalism


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