july 2004 g40g48g51g36g59g16g38g42g40g3g3 g48g82g71g72g79g3g39g82g70g88g80g72g81g87g68g87g76g82g81 g41g76g81g68g79g3g53g72g83g82g85g87 prepared for us environmental protection agency office of air quality planning and standards research triangle park nc 27711 by rti international health social economics 27709 project number 07647 005 429 g3 is a trade name institute acknowledgements the empax cge model was developed innovative strategies group iseg under epa contract 68 d 99 024 s center regulatory policy in tyler fox lisa conner linda chappell were managers special thanks to staff martin ross robert beach brooks depro brian murray their efforts developing this tool its documentation iii contents section page 1 introduction background 2 history modeling
