(A) Sampling sites shall be located at the inlet and outlet of the control device, except as provided in paragraph (a)(7)(i)(B) of this section.
(B) If a vent stream is introduced with the combustion air or as a secondary fuel into a boiler or process heater with a design capacity less than 44 megawatts, selection of paragraph (a)(1) or (a)(4) of this section, each run shall represent at least one complete filling period, during which liquid organic HAP's are loaded, and samples shall be collected using integrated sampling or grab samples taken at least four times per hour at approximately equal intervals of time, such as 15-minute intervals.
EQUATION 1 TO PARAGRAPH (A)(9)(II)
Where:
CT = Total concentration of organic compounds (minus methane and ethane), dry basis, parts per million by volume.
Cj = Concentration of sample components j, dry basis, parts per million by volume.
n = Number of components in the sample.
EQUATION 2 TO PARAGRAPH (A)(9)(V)
Where:
Cc = Concentration of organic compounds corrected to 3 percent oxygen, dry basis, parts per million by volume.
CT = Total concentration of organic compounds, dry basis, parts per million by volume.
%O2d = Concentration of oxygen, dry basis, percent by volume.
EQUATION 3 TO PARAGRAPH (A)(10)(II)(C)
Mj = FKVs CT
Where:
Mj = Mass of organic compounds emitted during testing interval j, kilograms.
Vs = Volume of air-vapor mixture exhausted at standard conditions, 20 °C and 760 millimeters mercury, standard cubic meters.
CT = Total concentration of organic compounds (as measured) at the exhaust vent, parts per million by volume, dry basis.
K = Density, kilograms per standard cubic meter organic HAP. 659 kilograms per standard cubic meter organic HAP. (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.)
F = 10-6 = Conversion factor, (cubic meters organic HAP per cubic meters air) * (parts per million by volume)-1.
EQUATIONS 4 AND 5 TO PARAGRAPH (A)(10)(II)(D)
Where:
Ei, Eo = Mass flow rate of organic compounds at the inlet (i) and outlet (o) of the combustion or recovery device, kilograms per hour.
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.
n = Number of testing intervals.
EQUATIONS 6 AND 7 TO PARAGRAPH (A)(10)(III)
Where:
Cij, Coj = Concentration of sample component j of the gas stream at the inlet and outlet of the control device, respectively, dry basis, parts per million by volume.
MWij, MWoj = Molecular weight of sample component j of the gas stream at the inlet and outlet of the control device, respectively, gram/gram-mole.
Qi, Qo = Flow rate of gas stream at the inlet and outlet of the control device, respectively, dry standard cubic meter per minute.
K2 = Constant, 2.494 * 10-6 (parts per million)-1 (gram-mole per standard cubic meter) (kilogram/gram) (minute/hour), where standard temperature for (gram-mole per standard cubic meter) is 20 °C.
EQUATION 8 TO PARAGRAPH (A)(10)(IV)
Where:
R = Control efficiency of control device, percent.
Ei = Mass emitted or mass flow rate of organic compounds at the inlet to the combustion or recovery device as calculated under paragraph (a)(10)(ii)(D) or (a)(10)(iii) of this section, kilogram per hour.
Eo = Mass emitted or mass flow rate of organic compounds at the outlet of the combustion or recovery device, as calculated under paragraph (a)(10)(ii)(D) or (a)(10)(iii) of this section, kilogram per hour.
40 C.F.R. §63.128