Where:
WAERm = Maximum Weighted Average Emission Rate in terms of lb/heat input or lb/gross output,
Hermi,j = hourly emission rate (e.g., lb/MMBtu, lb/MWh) from CEMS or sorbent trap monitoring as determined during the initial compliance determination from EGU j,
Rmmj = Maximum rated heat input, MMBtu/h, or maximum rated gross output, MWh/h, for EGU j,
p = number of EGUs in emissions averaging group that rely on CEMS,
Terk = Emissions rate (lb/MMBTU or lb/MWh) as determined during the initial compliance determination of EGU k,
Rmtk = Maximum rated heat input, MMBtu/h, or maximum rated gross output, MWh/h, for EGU k, and
m = number of EGUs in emissions averaging group that rely on emissions testing.
Where:
Variables with the similar names share the descriptions for Equation 1a of this section,
Smmj = maximum steam generation, lbsteam/h or lb/gross output, for EGU j,
Cfmj = conversion factor, calculated from the most recent compliance test results, in terms units of heat output or gross output per pound of steam generated (MMBtu/lbsteam or MWh/lbsteam) from EGU j,
Smtk = maximum steam generation, lbsteam/h or lb/gross output, for EGU k, and
Cfmk = conversion factor, calculated from the most recent compliance test results, in terms units of heat output or gross output per pound of steam generated (MMBtu/lbsteam or MWh/lbsteam) from EGU k.
Where:
Heri = hourly emission rate (e.g., lb/MMBtu, lb/MWh) from unit i's CEMS or sorbent trap monitoring system for the preceding 30-group boiler operating days,
Rmi = hourly heat input or gross output from unit i for the preceding 30-group boiler operating days,
p = number of EGUs in emissions averaging group that rely on CEMS or sorbent trap monitoring,
n = number of hours that hourly rates are collected over 30-group boiler operating days,
Teri = Emissions rate from most recent emissions test of unit i in terms of lb/heat input or lb/gross output,
Rti = Total heat input or gross output of unit i for the preceding 30-boiler operating days, and
m = number of EGUs in emissions averaging group that rely on emissions testing.
Where:
variables with similar names share the descriptions for Equation 2a of this section,
Smi = steam generation in units of pounds from unit i that uses CEMS for the preceding 30-group boiler operating days,
Cfmi = conversion factor, calculated from the most recent compliance test results, in units of heat input per pound of steam generated or gross output per pound of steam generated, from unit i that uses CEMS from the preceding 30 group boiler operating days,
Sti = steam generation in units of pounds from unit i that uses emissions testing, and
Cfti = conversion factor, calculated from the most recent compliance test results, in units of heat input per pound of steam generated or gross output per pound of steam generated, from unit i that uses emissions testing.
Where:
Heri = Hourly emission rate from unit i's Hg CEMS or Hg sorbent trap monitoring system for the preceding 90-group boiler operating days,
Rmi = Hourly heat input or gross output from unit i for the preceding 90-group boiler operating days,
p = Number of EGUs in the emissions averaging group,
n = Number of hours that hourly rates are collected over the 90-group boiler operating days.
Where:
Heri = Hourly emission rate from unit i's Hg CEMS or Hg sorbent trap monitoring system for the preceding 90-group boiler operating days,
Smi = Steam generation in units of pounds from unit i that uses Hg CEMS or Hg sorbent trap monitoring for the preceding 90-group boiler operating days,
Cfmi = Conversion factor, calculated from the most recent compliance test results, in units of heat input per pound of steam generated or gross output per pound of steam generated, from unit i that uses Hg CEMS or sorbent trap monitoring from the preceding 90-group boiler operating days,
p = Number of EGUs in the emissions averaging group,
n = Number of hours that hourly rates are collected over the 90-group boiler operating days.
40 C.F.R. §63.10009