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Get In-Use Emission RatesBased on the Regulation as of September 7, 2012

The in-use emission rates are given below:

In Use Emission Rates (grams/hp-hr)

Engine Model Year 25-49 hp 50-74 hp 75-99 hp 100-174 hp 175-299 hp 300-599 hp 600-750 hp >750 hp
1900 - 1969 7.2 14.8 14.8 15.9 15.9 15.2 15.2 15.2
1970 - 1971 7.2 14.8 14.8 14.8 14.8 14.1 14.1 14.1
1972 - 1979 7.2 14.8 14.8 13.6 13.6 13.0 13.0 13.0
1980 - 1987 7.2 14.8 14.8 12.5 12.5 11.9 11.9 11.9
1988 7.1 9.9 9.9 9.3 9.3 8.9 8.9 8.9
1989 - 1995 7.1 9.9 9.9 9.3 9.3 8.9 8.9 8.9
1996 7.1 9.9 9.9 9.3 6.9 6.9 6.9 8.9
1997 7.1 9.9 9.9 6.9 6.9 6.9 6.9 8.9
1998 7.1 6.9 6.9 6.9 6.9 6.9 6.9 8.9
1999 6.2 6.9 6.9 6.9 6.9 6.9 6.9 8.9
2000 6.2 6.9 6.9 6.9 6.9 6.9 6.9 6.9
2001 6.2 6.9 6.9 6.9 6.9 4.2 6.9 6.9
2002 6.2 6.9 6.9 6.9 6.9 4.2 4.2 6.9
2003 6.2 6.9 6.9 4.3 4.3 4.2 4.2 6.9
2004 4.9 4.9 4.9 4.3 4.3 4.2 4.2 6.9
2005 4.9 4.9 4.9 4.3 4.3 4.2 4.2 6.9
2006 4.9 4.9 4.9 4.3 2.6 2.6 2.6 4.2
2007 4.9 4.9 4.9 2.6 2.6 2.6 2.6 4.2
2008 4.9 3.0 3.0 2.6 2.6 2.6 2.6 4.2
2009 4.9 3.0 3.0 2.6 2.6 2.6 2.6 4.2
2010 4.9 3.0 3.0 2.6 2.6 2.6 2.6 4.2
2011 4.9 3.0 3.0 2.6 1.5 1.5 1.5 2.6
2012 4.9 3.0 2.5 2.5 1.5 1.5 1.5 2.6
2013 3.0 3.0 2.5 2.5 1.5 1.5 1.5 2.6
2014 3.0 3.0 2.5 2.5 0.3 0.3 0.3 2.6
2015 and later 3.0 3.0 0.3 0.3 0.3 0.3 0.3 2.6
Tier 1
Tier 2
Tier 3
Interim Tier 4
Final Tier 4