[Notice how this chart positions Agricultural fires as a "minor" source. However since Ag burning takes place within a one month time frame, the dosages are significnat enough to cause serious respitory and cardiac problems as well as death. He public health consequences of burning over 350,000 acres of biomass creates huge public health cost which are unacceptable. Washington state record indicate that at its highest level, 229,000 acres were burned. Idaho stae burns over 100,000 acres more than this. Washington declares a "public health emergency" when just 60,000 acres of bluegrass were burned. Over 2000 physicians asked the stae to ban grass burning. Grass burning was faced out in 1998.]

Explanation of Calculations:
Industrial:The data was compiled from the free registration values which account for most of the large sources in Idaho for permit year 1997. This value was approximately 18,000 tons per year. The small sources account for approximately 15% additional emissions based on a comparision of Ada and Canyon Counties fee data versus the N. Ada County State Implementation Plan 1995 actual emissions estimate for industry for Ada nad Canyon Counties.
Mobile and Area: Based on per capita emissions from Power-Bannock and N. Ada County nonattainment areas (NAAs), averaged, and then prorated to the Idaho population. Popuation numbers in NAA's are from the State Implemantation Plan and the Idaho population is from the Department of Commerce estimate of 1,030,000 for 1998. Area sources include sources such as agricultural iling, road dust, windblown dust, heating, and construction. 22% of the mobile emissions are from N. Ada Conty NAA and 5% are from Power-Bannock NAA.
Prescribed Forest/Range Fires and Wildfires:
-1996 acres, and 2000 wildfires acres/emissions from federal land managers.
-Includes prescribed natural fires caused by lightning.
-1996 emissions were estimated using consumption and emission factors provided by Roger Ottmar of the USFS Pacific Northwest Research Station.
Agricultural Fires:
-The following estimates of percentage of cropland burned were used: mint -3%, alfalfa seeed - 25%, bluegrass seed - 1000%; and wheat/barley - 15% assuming 100% consumption (from USDA Natural Resources Conservation Service and farmers).
-Harvested cropland acreages obtained from 1996 USDA agricultural census.
-Estimate of ditchbank acres is a best estimate based on information from the USDA Natural Resources Conservation Service and the 1992 report "Snake River Airshed Quality from Discretionary Burning" by Myron Molnau of the University of Idaho.
-Emisssion factors from Compilation of Air Pollutant Emission Factors, Volume I: Stationary Point and Area Sources, EPA OAQPS AP-42 5th Edition, January 1995