Code of Federal Regulations Title 40. Protection of Environment 40 CFR Pt. 72, App. C—ACTUAL 1985 YEARLY SO 2 EMISSIONS CALCULATION

The equation used to calculate the yearly SO₂ emissions (SO2) is as follows:

SO2 = (coal SO₂ emissions) + (oil SO₂ emissions) (in tons)

If gas is the only fuel, gas emissions are defaulted to 0.

Each fuel type SO₂ emissions is calculated on a yearly basis, using the equation:

fuel SO₂ emissions (in tons) = (yrly wtd. av. fuel sulfur %) x (AP–42 fact.) x (1–scrb. effic. %/100) x (units conver. fact.) x (yearly fuel burned)

For coal, the yearly fuel burned is in tons/yr and the AP–42 factor (which accounts for the ash retention of sulfur in coal), in lbs SO₂ ton coal, is by coal type:

For oil, the yearly fuel burned is in gal/yr. If it is in bbl/yr, convert using 42 gal/bbl oil. The AP–42 factor (which accounts for the oil density), in lbs SO₂/thousand gal oil, is by oil type:

For all fuel, the units conversion factor is 1 ton/2000 lbs.