[Code of Federal Regulations]
[Title 40, Volume 14]
[Revised as of July 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR74.23]
[Page 186-187]
TITLE 40--PROTECTION OF ENVIRONMENT
CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
PART 74--SULFUR DIOXIDE OPT-INS--Table of Contents
Subpart C--Allowance Calculations for Combustion Sources
Sec. 74.23 1985 Allowable SO2 emissions rate.
(a) Data requirements. (1) The designated representative of the
combustion source shall submit the following data and the calculations
under paragraph (b) of this section based on the submitted data:
(i) Allowable SO2 emissions rate of the combustion source
expressed in lbs/mmBtu as defined under Sec. 72.2 of this chapter for
the calendar year specified in paragraph (a)(2) of this section. If the
allowable SO2 emissions rate is not expressed in lbs/mmBtu,
the allowable emissions rate shall be converted to lbs/mmBtu by
multiplying the emissions rate by the appropriate factor as specified in
Table 1 of this section.
Table 1--Factors to Convert Emission Limits to Pounds of SO2/mmBtu
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Bituminous Subbituminous Lignite
Unit measurement coal coal 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............................................. 2x8760/(annual fuel consumption for specified year
1x10 3)
[[Page 187]]
lbs SO2/hour.............................................. 8760/(annual fuel consumption for specified year
1x10 6)
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1 Annual fuel consumption as defined under Sec. 74.20(b)(1) (i) or (ii); specified calendar year as defined
under Sec. 74.23(a)(2).
(ii) Citation of statute, regulations, and any other authority under
which the allowable emissions rate under paragraph (a)(1) of this
section is established as applicable to the combustion source;
(iii) Averaging time associated with the allowable emissions rate
under paragraph (a)(1) of this section.
(iv) The annualization factor for the combustion source, based on
the type of combustion source and the associated averaging time of the
allowable emissions rate of the combustion source, as set forth in the
Table 2 of this section:
Table 2--Annualization Factors for SO2 Emission Rates
------------------------------------------------------------------------
Annualization
Annualization factor for
Type of combustion source factor for unscrubbed
scrubbed unit unit
------------------------------------------------------------------------
Unit Combusting Oil, Gas, or some 1.00 1.00
combination..............................
Coal Unit with Averaging Time <= 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 0.93 0.89
Averaging Time Not Specified.............
------------------------------------------------------------------------
(2) Calendar year. (i) For combustion sources that commenced
operation prior to January 1, 1985, the calendar year for the allowable
SO2 emissions rate shall be 1985.
(ii) For combustion sources that commenced operation after January
1, 1985, the calendar year for the allowable SO2 emissions
rate shall be the first year of the three consecutive calendar years of
the alternative baseline under Sec. 74.20(b)(2).
(iii) For combustion sources meeting the requirements of
Sec. 74.20(c), the calendar year for calculating the allowable
SO2 emissions rate shall be the first year of the three
consecutive calendar years to be used as alternative data under
Sec. 74.20(c).
(b) 1985 Allowable SO2 emissions rate calculation. The
allowable SO2 emissions rate for the specified calendar year
shall be calculated as follows:
1985 Allowable SO2 Emissions Rate = (Allowable SO2
Emissions Rate) x (Annualization Factor)