Regulations last checked for updates: Nov 22, 2024
Title 40 - Protection of Environment last revised: Nov 20, 2024
Appendix - Figure 1 to Subpart G of Part 63—Definitions of Terms Used in Wastewater Equations
Main Terms
AMR = Actual mass removal of Table 8 and/or Table 9 compounds achieved by treatment process or a series of treatment processes, kg/hr.
C = Concentration of Table 8 and/or Table 9 compounds in wastewater, ppmw.
CG = Concentration of TOC (minus methane and ethane) or total organic hazardous air pollutants, in vented gas stream, dry basis, ppmv.
CGc = Concentration of TOC or organic hazardous air pollutants corrected to 3-percent oxygen, in vented gas stream, dry basis, ppmv.
CGS = Concentration of sample compounds in vented gas stream, dry basis, ppmv.
E = Removal or destruction efficiency, percent.
Fbio = Site-specific fraction of Table 8 and/or Table 9 compounds biodegraded, unitless.
f
bio = Site-specific fraction of an individual Table 8 or Table 9 compound biodegraded, unitless.
Fm = Compound-specific fraction measured factor, unitless (listed in table 34).
Fr = Fraction removal value for Table 8 and/or Table 9 compounds, unitless (listed in Table 9).
Fravg = Flow-weighted average of the Fr values.
i = Identifier for a compound.
j = Identifier for a sample.
k = Identifier for a run.
K2 = Constant, 41.57 * 10−9, (ppm)−1 (gram-mole per standard m
3) (kg/g), where standard temperature (gram-mole per standard m
3) is 20 °C.
m = Number of samples.
M = Mass, kg.
MW = Molecular weight, kg/kg-mole.
n = Number of compounds.
p = Number of runs.
%O2d = Concentration of oxygen, dry basis, percent by volume.
Q = Volumetric flowrate of wastewater, m
3/hr.
QG = Volumetric flow rate of vented gas stream, dry standard, m
3/min.
QMG = Mass flowrate of TOC (minus methane and ethane) or organic hazardous air pollutants, in vented gas stream, kg/hr.
QMW = Mass flowrate of Table 8 and/or Table 9 compounds in wastewater, kg/hr.
ρ = Density, kg/m
3.
RMR = Required mass removal achieved by treatment process or a series of treatment processes, kg/hr.
tT = Total time of all runs, hr.
Subscripts
a = Entering.
b = Exiting.
i = Identifier for a compound.
j = Identifier for a sample.
k = Identifier for a run.
m = Number of samples.
n = Number of compounds.
p = Number of runs.
T = Total; sum of individual.
[59 FR 19468, Apr. 22, 1994, as amended at 59 FR 29201, June 6, 1994; 61 FR 63629, Dec. 12, 1995; 62 FR 2779, Jan. 17, 1997; 63 FR 67793, Dec. 9, 1998; 64 FR 20195, Apr. 26, 1999; 65 FR 78284, Dec. 14, 2000; 66 FR 6935, Jan. 22, 2001]
source: 57 FR 61992, Dec. 29, 1992, unless otherwise noted.