Air Toxics Emissions from the Great Lakes Region

摘要

The Great Regional Air Toxic Emissions Inventory is an ongoing initiative of the air regulatoryrnagencies in the eight Great Lakes states and province of Ontario. The inventory organizes annualrndata into a standardized and accessible format. Five emission inventories have been released forrncalendar years 1996, 1997, 1998, 1999, and 2001. The number of target pollutants increasedrnfrom 82 in the 1996 - 1998 inventories to 213 pollutants in 1999 and 2001 inventories, includingrnall those classified as hazardous air pollutants by the U.S. Environmental Protection Agency. Asrna result, the number of distinct processes, described by source classification codes (SCC),rnexpanded from 1446 in the 1996 inventory to 2151 in the 2001 inventory. The quality ofrnemission inventory has been improved by applying improved emission estimation methods,rnemission factors, activity data, and reporting requirements.rnThis paper will categorize emission sources and pollutants. It will also analyze inconsistencies inrndata collection and analysis across jurisdictions, address deficiencies in regional emissionrnestimates, and identify future improvements for preparing a more reliable and technicallyrnaccurate inventory.