economic analysis of air pollution regulations boilers and process heaters final report prepared for john l sorrels us environmental protection agency office quality planning standards innovative strategies economics group md 15 research triangle park nc 27711 by rti health social 27709 epa contract number 68 d 99 024 project 7647 004 385 november 2002 michael p gallaher alan c o connor brooks m depro iii contents section page 1 introduction requirements an eia 2 scope purpose 3 organization the boiler heater technologies characteristics steam fossil fuel characterization 5