Table C-5 to Subpart C of Part 53 - Summary of Comparability Field Testing Campaign Site and Seasonal Requirements for Class II and III FEMs for PM 10-2.5 and PM 2.5

Table C-5 to Subpart C of Part 53 - Summary of Comparability Field Testing Campaign Site and Seasonal Requirements for Class II and III FEMs for PM_10-2.5 and PM_2.5

Candidate method	Test site	A	B	C	D
PM2.5	Test site location area	Los Angeles basin or California Central Valley	Western city such as Denver, Salt Lake City, or Albuquerque	Midwestern city	Northeastern or mid-Atlantic city.
	Test site characteristics	Relatively high PM2.5, nitrates, and semi-volatile organic pollutants	Cold weather, higher elevation, winds, and dust	Substantial temperature variation, high nitrates, wintertime conditions	High sulfate and high relative humidity.
	Class III Field test campaigns (Total: 5)	Winter and summer	Winter only	Winter only	Summer only.
	Class II Field test campaigns (Total: 2)	Site A or B, any season		Site C or D, any season.
PM10-2.5	Test site location area	Los Angeles basin or California Central Valley	Western city such as Las Vegas or Phoenix	Midwestern city	Large city east of the Mississippi River.
	Test site characteristics	Relatively high PM2.5, nitrates, and semi-volatile organic pollutants	High PM10-2.5 to PM2.5 ratio, windblown dust	Substantial temperature variation, high nitrates, wintertime conditions	High sulfate and high relative humidity.
	Class III Field test campaigns (Total: 5)	Winter and summer	Winter only	Winter only	Summer only.
	Class II Field test campaigns (Total: 2)	Site A or B, any season		Site C or D, any season.