Stumbled across this while searching for something completely different. Maybe somebody would find it interesting?
http://www.ecy.wa.gov/programs/air/AOP_Permits/Boiler/TTODD/PDFs/OWBFINAL_Johnson.pdf
http://www.ecy.wa.gov/programs/air/AOP_Permits/Boiler/TTODD/PDFs/OWBFINAL_Johnson.pdf