SO2 Emissions Factor = (average percent of sulfur by weight) * (k),
where,
average percent of sulfur by weight
= annual average, for a combustion source submitting annual data
= monthly average, for a combustion source submitting monthly data
k = 39,000 for bituminous coal or anthracite
= 35,000 for subbituminous coal
= 30,000 for lignite
= 5,964 for distillate (light) oil
= 6,594 for residual (heavy) oil
= 0.6 for natural gas
For other fuels, the combustion source must specify the SO2 emissions factor.
where,
"quantity of fuel consumed" is as defined under § 74.20(a)(2)(i) ;
"SO2 emissions factor" is as defined under paragraph (b) of this section;
"control system efficiency" is as defined under § 60.48(a) and part 60, appendix A, method 19 of this chapter, if applicable; and
"fuel pre-treatment efficiency" is as defined under § 60.48(a) and part 60, appendix A, method 19 of this chapter, if applicable.
40 C.F.R. §74.22