Where:
CREG, or CTOC= Concentration of total regulated material or concentration of TOC (minus methane and ethane), dry basis, parts per million by volume.
x = Number of samples in the sample run.
n = Number of components in the sample.
Cji = Concentration of sample components j of sample i, dry basis, parts per million by volume.
Where:
Cc = Concentration of TOC or regulated material corrected to 3 percent oxygen, dry basis, parts per million by volume.
Cm = Concentration of TOC (minus methane and ethane) or regulated material, dry basis, parts per million by volume.
%O2d = Concentration of oxygen, dry basis, percentage by volume.
Where:
Ei, Eo = Emission rate of TOC (minus methane and ethane) (ETOC) or emission rate of total organic HAP (EHAP) in the sample at the inlet and outlet of the control device, respectively, dry basis, kilogram per hour.
K2 = Constant, 2.494 * 10-6 (parts per million)-1 (gram-mole per standard cubic meter) (kilogram per gram) (minute per hour), where standard temperature (gram-mole per standard cubic meter) is 20 °C.
n = Number of components in the sample.
Cij, Coj = Concentration on a dry basis of organic compound j in parts per million by volume of the gas stream at the inlet and outlet of the control device, respectively. If the TOC emission rate is being calculated, Cij and Coj include all organic compounds measured minus methane and ethane; if the total organic HAP emissions rate is being calculated, only organic HAP are included.
Mij, Moj = Molecular weight of organic compound j, gram per gram-mole, of the gas stream at the inlet and outlet of the control device, respectively.
Qi, Qo = Process vent flow rate, dry standard cubic meter per minute, at a temperature of 20 °C, at the inlet and outlet of the control device, respectively.
Where:
R = Control efficiency of control device, percent.
Ei = Mass rate of TOC (minus methane and ethane) or total regulated material at the inlet to the control device as calculated under paragraph (b)(4)(ii) of this section, kilograms TOC per hour or kilograms regulated material per hour.
Eo = Mass rate of TOC (minus methane and ethane) or total regulated material at the outlet of the control device, as calculated under paragraph (b)(4)(ii) of this section, kilograms TOC per hour or kilograms total regulated material per hour.
Where:
Mj = Mass of organic compounds emitted during testing interval j, kilograms.
F = 10-6 = Conversion factor, (cubic meters regulated material per cubic meters air) * (parts per million by volume)-1.
K = Density, kilograms per standard cubic meter regulated material. You may use 659 kilograms per standard cubic meter regulated material. (Note: The density term cancels out when the percent reduction is calculated. Therefore, the density used has no effect. The density of hexane is given so that it can be used to maintain the units of Mj.)
Vs = Volume of air-vapor mixture exhausted at standard conditions, 20 °C and 760 millimeters of mercury (30 inches of mercury), standard cubic meters.
Ct = Total concentration of organic compounds (as measured) at the exhaust vent, parts per million by volume, dry basis.
Where:
Ei, Eo = Mass flow rate of organic compounds at the inlet (i) and outlet (o) of the control device, kilograms per hour.
n = Number of testing intervals.
Mij, Moj = Mass of organic compounds at the inlet (i) or outlet (o) during testing interval j, kilograms.
T = Total time of all testing intervals, hours.
40 C.F.R. §65.158