background document for life cycle greenhouse gas emission factors carpet and personal computers epa530 r 03 018 november 21 2003 ii table of contents executive summary 1 i 3 source reduction recycling 7 combustion 14 landfilling 15 17 20 26 27 iii 28 appendix a data used to derive factor 30 b 31 c computer 38 d pc 40 exhibits exhibit mtce ton 2 4 process energy emissions calculations 5 transportation 6 non fate recycled secondary products percent composition 8 molded auto parts virgin materials 9 10
