Fossil fuel | In parts per million | |
Span value for SO2 | Span value for NOX | |
Gas | (1) | 500. |
Liquid | 1,000 | 500. |
Solid | 1,500 | 1,000. |
Combinations | 1,000y + 1,500z | 500 (x + y) + 1,000z. |
1 Not applicable.
Where:
x = Fraction of total heat input derived from gaseous fossil fuel;
y = Fraction of total heat input derived from liquid fossil fuel; and
z = Fraction of total heat input derived from solid fossil fuel.
Where E, C, F, and %O2 are determined under paragraph (f) of this section.
Where E, C, Fc and %CO2 are determined under paragraph (f) of this section.
Where:
Xi = Fraction of total heat input derived from each type of fuel (e.g. natural gas, bituminous coal, wood residue, etc.);
Fi or (Fc)i = Applicable F or Fc factor for each fuel type determined in accordance with paragraphs (f)(4) and (f)(5) of this section; and
n = Number of fuels being burned in combination.
40 C.F.R. §60.45