epa420 r 98 020 commercial marine emissions inventory for epa category 2 and 3 compression ignition engines in united states continental inland waterways 21 august 1998 prepared us environmental protection agency office of mobile sources 2000 traverwood ann arbor mi 48105 by james j corbett jr pe paul s fischbeck ph d department engineering public policy carnegie mellon university pittsburgh pa 15213 order no 8a 0516 natx table contents executive summary e2 1 introduction estimation methodology ship method a estimated using registry data 5 b foreign domestic cargo transport fleet 9 comparing the with global 16 engine types categories 18 4 replacement rates 19 6 references 7 appendices a1 operations 1996 pages a2 a8 1993 trade a9 a18 manufactures models flag a19 a31 is currently developing
