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The National Air Emissions Monitoring Study (NAEMS), was a two-year study of air emissions from animal feeding operations (AFOs) that raise pigs, broiler chickens, and from egg-laying operations and dairies. The study was funded by the AFO industry as part of the 2005 voluntary air compliance agreement with EPA. Twenty sites at AFOs in nine states were monitored, with EPA oversight, for particulate matter, ammonia, hydrogen sulfide and volatile organic compounds. Greenhouse gas emissions were not measured as part of this study. A separate industry study monitored emissions from a broiler chicken site in Kentucky for one year. The industry worked closely with EPA during that study and followed EPA monitoring and quality assurance guidelines.

The data was gathered from 2007 – 2010. It was originally published in 2011 and finalized in 2012. This data, along with additional data received by EPA in response to a Call for Information, informed the development of draft emissions estimating methodologies for broiler confinement houses and swine and dairy lagoons/basins.

This page contains final reports with data for each of the sites monitored as part of NAEMS.

Data from Sites Monitored

	State	County	Site Name	Type of Operation Monitored
1	California	San Joaquin	CA1B	Broiler (barn)
2	California	San Joaquin	CA2B	Egg layer (barn)
3	California	San Joaquin	CA5B	Dairy (barn)
4	Iowa	Marshall	IA4B	Swine (sow) (barn)
5	Iowa	Jefferson	IA3A	Swine finisher (basin)
6	Indiana	Wabash	IN2B	Egg layer (barn)
			IN2H	High-rise barns
7	Indiana	Carroll	IN3B	Swine finisher (barn)
8	Indiana	Clinton	IN4A	Swine (sow) (lagoon)
9	Indiana	Jasper	IN5B	Dairy (barn)
10	Indiana	Jasper	IN5A	Dairy (lagoon)
11	North Carolina	Nash	NC2B	Egg layer (barn)
12	North Carolina	Duplin	NC3B	Swine finisher (barn)
13	North Carolina	Bladen	NC3A	Swine finisher (lagoon)
14	North Carolina	Duplin	NC4A	Swine (sow) (lagoon)
			NC4B	Swine (sow) (barn)
15	New York	Onondaga	NY5B	Dairy (barn)
16	Oklahoma	Texas	OK3A	Swine finisher (lagoon)
17	Oklahoma	Texas	OK4A	Swine (sow) (lagoon)
			OK4B	Swine (sow) (barn)
18	Texas	Deaf Smith	TX5A	Dairy (corral)
19	Washington	Yakima	WA5A	Dairy (basin)
			WA5B	Dairy (barn)
20	Wisconsin	Saint Croix	WI5A	Dairy (lagoon)
			WI5B	Dairy (barn)

Also Monitored

	State	County	Site Name	Type of Operation Monitored
21	Kentucky*	Union and Hopkins	KY1B	Broiler (barn)

*  Data from the Kentucky site are from a study conducted by Tyson Foods.

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