Table 1-Factors to Convert Emission Limits to Pounds of SO2/mmBtu
Unit measurement | Bituminous coal | Subbituminous coal | Lignite coal | Oil |
lbs Sulfur/mmBtu | 2.0 | 2.0 | 2.0 | 2.0 |
% Sulfur in fuel | 1.66 | 2.22 | 2.86 | 1.07 |
ppm SO2 | 0.00287 | 0.00384 | 0.00167 | |
ppm Sulfur in fuel | 0.00334 | |||
tons SO2/hour | 2 * 8760/(annual fuel consumption for specified year1 * 103) | |||
lbs SO2/hour | 8760/(annual fuel consumption for specified year1 * 106) |
1 Annual fuel consumption as defined under § 74.20(b)(1) (i) or (ii) ; specified calendar year as defined under § 74.23(a)(2) .
Table 2-Annualization Factors for SO2 Emission Rates
Type of combustion source | Annualization factor for scrubbed unit | Annualization factor for unscrubbed unit |
Unit Combusting Oil, Gas, or some combination | 1.00 | 1.00 |
Coal Unit with Averaging Time [LESS THAN EQUAL TO] 1 day | 0.93 | 0.89 |
Coal Unit with Averaging Time = 1 week | 0.97 | 0.92 |
Coal Unit with Averaging Time = 30 days | 1.00 | 0.96 |
Coal Unit with Averaging Time = 90 days | 1.00 | 1.00 |
Coal Unit with Averaging Time = 1 year | 1.00 | 1.00 |
Coal Unit with Federal Limit, but Averaging Time Not Specified | 0.93 | 0.89 |
1985 Allowable SO2 Emissions Rate = (Allowable SO2 Emissions Rate) * (Annualization Factor)
40 C.F.R. §74.23