although the information in this document has been funded wholly or part by united states environmental protection agency under contract no 68 d3 0035 to eh pechan & associates inc it does not necessarily reflect views of and official endorsement should be inferred mention trade names commercial products constitute recommendation for use comparison methods projecting nonroad equipment activity levels revised draft report prepared office mobile sources us ann arbor mi 48105 3500 westgate drive suite 103 durham nc 27707 september 1997 epa work assignment iii 107 97 09 004 1807 contents page tables figures v acronyms abbreviations vi chapter i introduction 1 a base year engine application populations b growth 2 c effects standards on emission projections 3 d organization ii 5 overview projection currently 8 bea regional national
