New Snowmobile Best Available Technology (BAT) List
Snowmobiles Meeting Yellowstone’s New Best Available Technology (BAT)Requirements Model Year 2016
The following snowmobile models have been provisionally certified as meeting the New BAT requirements for the 2015-2016 Winter Season.
Snowmobiles Meeting Yellowstone National Park
1EPA Family Emissions Limits (FEL) for Snowmobiles are 75 for Hydrocarbons and 275 for Carbon Monoxide (2010 and 2011 model years). (See Federal Register Vol. 73, No. 123, Wednesday, June 25, 2008, page 35946)
2Hydrocarbons: certified by EPA to a Family Emissions Limit (FEL) of 15 g/kW-hr or less.
3Carbon Monoxide: certified by EPA to a Family Emissions Limit (FEL) of 90 g/kW-hr or less. Air emission figures for carbon monoxide and hydrocarbons presented are either the Official Test Results (OTR) or the certified FEL. The Official Test Results are actual measured emissions. FEL&#’;s J1162 test procedures. The SAE J1161 test procedures allow for a tolerance of 2 dB(A) over the sound level limit to provide for variations in test sites, temperature gradient, wind velocity gradients, test equipment, and inherent differences in nominally identical vehicles. To operate in the park after March 15, 2015, a population of measurements for a
snowmobile model may not exceed a mean output of 67 dB(A), and a single measurement may not exceed 69 dB(A), using the J1161 test procedures.
5The November 22, 2013 rule for winter use management in Yellowstone National Park allows a snowmobile meeting New BAT requirements for air and sound emissions may be operated in the park for a period not exceeding six years from the manufacturing date, or after the snowmobile has traveled 6,000 miles, whichever occurs later.