where:
Debits and all terms of the equation are in units of megagrams per month, and
EPViACTUAL = Emissions from each Group 1 process vent i that is uncontrolled or is controlled to a level less stringent than the reference control technology. This is calculated according to paragraph (g)(2) of this section.
(0.02) EPViu = Emissions from each Group 1 vent i if the reference control technology had been applied to the uncontrolled emissions, calculated according to paragraph (g)(2) of this section.
ESiACTUAL = Emissions from each Group 1 storage vessel i that is uncontrolled or is controlled to a level less stringent than the reference control technology. This is calculated according to paragraph (g)(3) of this section.
(0.05) ESiu = Emissions from each Group 1 storage vessel i if the reference control technology had been applied to the uncontrolled emissions, calculated according to paragraph (g)(3) of this section.
ETRiACTUAL = Emissions from each Group 1 transfer rack i that is uncontrolled or is controlled to a level less stringent than the reference control technology. This is calculated according to paragraph (g)(4) of this section.
(0.02) ETRiu = Emissions from each Group 1 transfer rack i if the reference control technology had been applied to the uncontrolled emissions, calculated according to paragraph (g)(4) of this section.
EWWiACTUAL = Emissions from each Group 1 wastewater stream i that is uncontrolled or is controlled to a level less stringent than the reference control technology. This is calculated according to paragraph (g)(5) of this section.
EWWic = Emissions from each Group 1 wastewater stream i if the reference control technology had been applied to the uncontrolled emissions. This is calculated according to paragraph (g)(5) of this section.
n = The number of emission points being included in the emissions average. The value of n is not necessarily the same for process vents, storage vessels, transfer racks, and wastewater.
where:
EPViu = Uncontrolled process vent emission rate from process vent i, megagrams per month.
Q = Vent stream flow rate, dry standard cubic meters per minute, measured using Method 2, 2A, 2C, or 2D of part 60, appendix A, as appropriate.
h = Monthly hours of operation during which positive flow is present in the vent, hours per month.
Cj = Concentration, parts per million by volume, dry basis, of organic HAP j as measured by Method 18 of part 60, appendix A.
Mj = Molecular weight of organic HAP j, gram per gram-mole.
n = Number of organic HAP's.
where:
ESiu = Uncontrolled emissions, defined as emissions from a fixed roof vessel having identical dimensions and vessel color as vessel i, megagrams per month.
LB = Breathing loss emissions, megagrams per year, calculated according to paragraph (g)(3)(i)(A) of this section.
LW = Working loss emissions, megagrams per year, calculated according to paragraph (g)(3)(i)(B) of this section.
12 = Constant, months per year.
where:
Mv = Molecular weight of vapor in storage vessel, pound per pound-mole.
PA = Average atmospheric pressure, pounds per square inch absolute.
P = True vapor pressure of the HAP at liquid storage temperature, pounds per square inch absolute. See table 21 of this subpart.
D = Tank diameter, feet.
H = Average vapor space height, feet. Use vessel-specific values or an assumed value of one-half the height.
[DELTA] T = Average ambient diurnal temperature change, °F. A typical value of 20 °F may be used.
Fp = Paint factor, dimensionless, from table 22 of this subpart; use Fp = 1 for vessels located indoors.
C = Adjustment factor for small diameter tanks, dimensionless; use C = 1 for diameter [GREATER THAN EQUAL TO]30 feet; use C = 0.0771D - 0.0013D2 - 0.1334 for diameter [LESS THAN]30 feet.
KC = Product factor, dimensionless. Use 1.0 for organic HAP's.
LW = 1.089 * 10-8 Mv (P)(V)(N) (KN) (KC)
where:
V = Tank capacity, gallon.
N = Number of turnovers per year.
KN = Turnover factor, dimensionless, and
Mv, P, and KC as defined in paragraph (g)(3)(i)(A) of this section.
where:
LW = Withdrawal loss emissions, megagrams per year, calculated according to paragraph (g)(3)(iii)(A) of this section.
LR = Rim seal loss emissions, megagrams per year, calculated according to paragraph (g)(3)(iii)(B) of this section.
LF = Fitting loss emissions, megagrams per year, calculated according to paragraph (g)(3)(iii)(C) of this section.
LD = Deck seam loss emissions, megagrams per year, calculated according to paragraph (g)(3)(iii)(D) of this section.
12 = Constant, months per year.
where:
Q = Throughput, gallon per year; (gallon/turnover) * (turnovers per year).
C = Shell clingage factor, barrel per 1,000 square foot, see table 23 of this subpart.
WL = Average liquid density, pound per gallon.
D = Tank diameter, feet.
Nc = Number of columns, dimensionless, see table 24 of this subpart.
Fc = Effective column diameter, feet [column perimeter (feet) ÷ 3.1416], see table 25 of this subpart.
where:
Mv = Molecular weight of vapor in storage vessel, pound per pound-mole.
D = Tank diameter, feet.
Kc = Product factor, dimensionless; use 1.0 for organic HAP's.
Ks = Seal factor, pound-mole per [foot (miles per hour)n year], see table 26 of this subpart.
V = Average wind speed at the source, miles per hour. A value of 10 miles per hour may be assumed if source-specific data are not available.
n = Seal related wind speed exponent, dimensionless, see table 26 of this subpart.
2,205 = Constant, pounds per megagram.
P* = Vapor pressure function, dimensionless, and
where:
PA = Average atmospheric pressure, pounds per square inch absolute.
P = True vapor pressure at liquid storage temperature, pounds per square inch absolute.
where:
Ff = The total deck fitting loss factor, pound-mole per year, and
where:
NFi = Number of fittings of a particular type, dimensionless. NFi is determined for the specific tank or estimated from tables 24 and 27 of this subpart.
KFi = Deck fitting loss factor for a particular type fitting, pound-mole per year. KFi is determined for each fitting type from table 27 of this subpart.
n = Number of different types of fittings, dimensionless.
P*, Mv, Kc, and 2,205 as defined in paragraph (g)(3)(iii)(B) of this section.
where:
KD = Deck seam loss factor, pound-mole per foot per year, and
KD = 0.34 for non-welded decks.
KD = 0 for welded decks.
SD = Deck seam length factor, feet per square foot, see table 28 of this subpart.
D, P*, Mv, Kc, and 2,205 as defined in paragraph (g)(3)(iii)(B) of this section.
where:
LW = Withdrawal loss emissions, megagrams per year, calculated according to paragraph (g)(3)(iv)(A) of this section.
LR = Rim seal loss emissions, megagrams per year, calculated according to paragraph (g)(3)(iv)(B) of this section.
LF = Fitting loss emissions, megagrams per year, calculated according to paragraph (g)(3)(iv)(C) of this section.
12 = Constant, months per year.
where:
Q = Throughput, gallons per year.
C = Shell clingage factor, barrel per 1,000 square foot, see table 23 of this subpart.
WL = Average liquid density, pound per gallon.
D = Vessel diameter, feet.
where:
Ks = Seal factor, pound-mole per [foot (miles per hour)N year], see table 29 of this subpart.
V = Average wind speed, miles per hour, at the source. A value of 10 miles per hour may be assumed if source-specific data are not available.
N = Seal wind speed exponent, dimensionless, see table 29 of this subpart.
P* = Vapor pressure function, dimensionless, as defined in paragraph (g)(3)(iii)(B) of this section.
D = Vessel diameter, feet.
MV = Molecular weight of the HAP, pound per pound-mole.
Kc = Product factor, dimensionless; use 1.0 for organic HAP's.
2,205 = Constant, pounds per megagram.
where:
FF = The total deck fitting loss factor, pound-mole per year, and
where:
NFi = Number of fittings of a particular type, dimensionless. NFi is determined for the specific tank or estimated from tables 30 through 32 of this subpart.
KFi = Deck fitting loss factor for a particular type fitting, pound-mole per year, and
KFi = KFai + KFbi Vmi, pound-mole per year, see table 30 of this subpart for the appropriate values of KFa, KFb, and m for each fitting type.
V, P*, Mv, Kc, and 2,205 as defined in paragraph (g)(3)(iv)(B) of this section.
where:
ETRiu = Uncontrolled transfer HAP emission rate from transfer rack i, megagrams per month.
S = Saturation factor, dimensionless (see table 33 of this subpart).
P = Weighted average rack partial pressure of organic HAP's transferred at the rack during the month, kilopascals.
M = Weighted average molecular weight of organic HAP's transferred at the transfer rack during the month, gram per gram-mole.
G = Monthly volume of organic HAP's transferred, liters per month.
T = Weighted rack bulk liquid loading temperature during the month, Kelvin ( °C + 273).
where:
Pj = Maximum true vapor pressure of individual organic HAP transferred at the rack, kilopascals.
G = Monthly volume of organic HAP transferred, liters per month, and
Gj = Monthly volume of individual organic HAP transferred at the transfer rack, liters per month.
n = Number of organic HAP's transferred at the transfer rack.
where:
Mj = Molecular weight of individual organic HAP transferred at the rack, gram per gram-mole.
G, Gj, and n as defined in paragraph (g)(4)(ii) of this section.
where:
Tj = Average annual bulk temperature of individual organic HAP loaded at the transfer rack, Kelvin ((°C + 273).
G, Gj, and n as defined in paragraph (g)(4)(ii) of this section.
where:
EWWic = Monthly wastewater stream emission rate if wastewater stream i is controlled by the reference control technology, megagrams per month.
Qi = Average flow rate for wastewater stream i, as determined by the procedure in § 63.144(c)(3) , liters per minute.
Hi = Number of hours during the month that wastewater stream i was generated, hours per month.
s = Total number of table 9 HAP in wastewater stream i.
Frm = Fraction removed of table 9 HAP m in wastewater, from table 9, dimensionless.
Fem = Fraction emitted of table 9 HAP m in wastewater, from table 34, dimensionless.
HAPim = Average concentration of table 9 HAP m in wastewater stream i, parts per million by weight.
Where:
EWWiACTUAL = Monthly wastewater stream emission rate if wastewater stream i is uncontrolled or is controlled to a level less stringent than the reference control technology, megagrams per month.
Where:
EWWiACTUAL = Monthly wastewater stream emission rate if wastewater stream i is uncontrolled or is controlled to a level less stringent than the reference control technology, megagrams per month.
PRim = The efficiency of the treatment process, or series of treatment processes, which treat wastewater stream i, in reducing the emission potential of table 9 HAP m in wastewater, dimensionless, as calculated by:
Where:
HAPim-in = Average concentration of table 9 HAP m, parts per million by weight, as defined and determined according to paragraph (g)(5)(i) of this section, in the wastewater entering the first treatment process in the series.
HAPim-out = Average concentration of table 9 HAP m, parts per million by weight, as defined and determined according to paragraph (g)(5)(i) of this section, in the wastewater exiting the last treatment process in the series.
Ri = Reduction efficiency of the device used to control any vapor streams emitted and collected from wastewater stream i during treatment, dimensionless, as determined according to the procedures in § 63.145(i) or (j) of this subpart.
where:
Credits and all terms of the equation are in units of megagrams per month, the baseline date is November 15, 1990, and:
D = Discount factor = 0.9 for all credit generating emission points except those controlled by a pollution prevention measure, which will not be discounted.
EPV1iACTUAL = Emissions for each Group 1 process vent i that is controlled to a level more stringent than the reference control technology, calculated according to paragraph (h)(2) of this section.
(0.02) EPV1iu = Emissions from each Group 1 process vent i if the reference control technology had been applied to the uncontrolled emissions. EPV1iu is calculated according to paragraph (h)(2) of this section.
EPV2iACTUAL = Emissions from each Group 2 process vent i that is controlled, calculated according to paragraph (h)(2) of this section.
EPV2iBASE = Emissions from each Group 2 process vent i at the baseline date, as calculated in paragraph (h)(2) of this section.
ES1iACTUAL = Emissions from each Group 1 storage vessel i that is controlled to a level more stringent than the reference control technology, calculated according to paragraph (h)(3) of this section.
(0.05) ES1iu = Emissions from each Group 1 storage vessel i if the reference control technology had been applied to the uncontrolled emissions. ES1iu is calculated according to paragraph (h)(3) of this section.
ES2iACTUAL = Emissions from each Group 2 storage vessel i that is controlled, calculated according to paragraph (h)(3) of this section.
ES2iBASE = Emissions from each Group 2 storage vessel i at the baseline date, as calculated in paragraph (h)(3) of this section.
ETR1iACTUAL = Emissions from each Group 1 transfer rack i that is controlled to a level more stringent than the reference control technology, calculated according to paragraph (h)(4) of this section.
(0.02) ETR1iu = Emissions from each Group 1 transfer rack i if the reference control technology had been applied to the uncontrolled emissions. ETR1iu is calculated according to paragraph (h)(4) of this section.
ETR2iACTUAL = Emissions from each Group 2 transfer rack i that are controlled, calculated according to paragraph (h)(4) of this section.
ETR2iBASE = Emissions from each Group 2 transfer rack i at the baseline date, as calculated in paragraph (h)(4) of this section.
EWW1iACTUAL = Emissions from each Group 1 wastewater stream i that is controlled to a level more stringent than the reference control technology, calculated according to paragraph (h)(5) of this section.
EWW1ic = Emissions from each Group 1 wastewater stream i if the reference control technology had been applied to the uncontrolled emissions, calculated according to paragraph (h)(5) of this section.
EWW2iACTUAL = Emissions from each Group 2 wastewater stream i that is controlled, calculated according to paragraph (h)(5) of this section.
EWW2iBASE = Emissions from each Group 2 wastewater stream i at the baseline date, calculated according to paragraph (h)(5) of this section.
n = Number of Group 1 emission points included in the emissions average. The value of n is not necessarily the same for process vents, storage vessels, transfer racks, and wastewater.
m = Number of Group 2 emission points included in the emissions average. The value of m is not necessarily the same for process vents, storage vessels, transfer racks, and wastewater.
where EPV2iu is calculated according to the procedures and equation for EPViu in paragraphs (g)(2)(i) and (g)(2)(ii) of this section. The percent reduction shall be calculated according to the procedures specified in paragraphs (g)(2)(iii)(B)(1) through (g)(2)(iii)(B)(3) of this section.
where ES2iu shall be calculated according to the equations for ESiu in paragraph (g)(3)(i) of this section. The percent reduction shall be calculated according to the procedures in paragraphs (g)(3)(ii)(B)(1) and (g)(3)(ii)(B)(2) of this section.
where ETR2iu is calculated according to the procedures and equations for ETRiu in paragraphs (g)(4)(i) through (g)(4)(iv) of this section. Percent reduction shall be calculated according to the procedures in paragraphs (g)(4)(v)(B)(1) and (g)(4)(v)(B)(2) of this section.
where:
Percent reduction = Efficiency of pollution prevention measure (percent organic HAP reduction).
EB = Monthly emissions before the pollution prevention measure, megagrams per month, determined as specified in paragraphs (j)(2)(ii)(A), (j)(2)(ii)(B), and (j)(2)(ii)(C) of this section.
Epp = Monthly emissions after the pollution prevention measure, megagrams per month, as determined for the most recent month, determined as specified in paragraphs (j)(2)(ii)(D) or (j)(2)(ii)(E) of this section.
PB = Monthly production before the pollution prevention measure, megagrams per month, during the same period over which EB is calculated.
Ppp = Monthly production after the pollution prevention measure, megagrams per month, as determined for the most recent month.
Where:
n = Number of wastewater streams.
QBi = Average flow rate for wastewater stream i before the pollution prevention measure, defined and determined according to paragraph (g)(5)(i) of this section, liters per minute, before implementation of the pollution prevention measure.
HBi = Number of hours per month that wastewater stream i was discharged before the pollution prevention measure, hours per month.
s = Total number of table 9 HAP in wastewater stream i.
Fem = Fraction emitted of table 9 HAP m in wastewater of this subpart, dimensionless.
HAPBim = Average concentration of table 9 HAP m in wastewater stream i, defined and determined according to paragraph (g)(5)(i) of this section, before the pollution prevention measure, parts per million by weight, as measured before the implementation of the pollution measure.
where n, Qppi, Hppi, s, Fem, and HAPppim are defined and determined as described in paragraph (j)(2)(ii)(B) of this section except that Qppi, Hppi, and HAPppim shall be determined after the pollution prevention measure has been implemented.
40 C.F.R. §63.150