[Comment: For dates and availability of non-regulatory government publications, publications of recognized organizations and associations, federal rules, and federal statutory provisions referenced in this rule, see paragraph (JJ) of rule 3745-21-01 of the Administrative Code titled "referenced materials."]
where:
T = Total VOC emissions from the combined coating lines before the application of capture systems and control devices, in units of pounds per day.
n = Number of different coatings applied in the coating lines at the facility.
i = Subscript denoting an individual coating.
Ai = Mass of VOC per volume of coating (i) (including water and exempt solvents), as applied, used at the facility, in units of pounds VOC per gallon.
Bi = Volume of coating (i) (including water and exempt solvents), as applied, used at the facility, in units of gallons per day. The instrument or method by which the owner or operator accurately measured or calculated the volume of each coating, as applied, shall also be described in the certification to the director.
This information does not have to be kept on a line-by-line basis. Also, if an owner or operator mixes complying coatings at a coating line, it is not necessary to record the VOC content of the resulting mixture.
RT = TE / LE
where:
TE = total volume of coating solids that is added to the EDP coating line in a calendar month (gallons).
LE = volume design capacity of the EDP system, which is the total liquid volume contained in the EDP system's tanks, pumps, recirculating lines, filters, etc. at the system's designed liquid operating level (gallons).
The owner or operator shall collect and record the following information each month for the final repair coating line and maintain the information at the facility for a period of three years:
The owner or operator shall notify the director and submit a copy of such notification within thirty days following the end of the calendar month of any monthly record showing that the monthly volume-weighted average VOC content exceeds the applicable emission limitation.
No owner or operator of an automobile or light-duty truck assembly plant may cause, allow, or permit the discharge into the ambient air of any VOC in excess of the following:
The owner or operator shall collect and record the following information each month for the coating line and maintain the information at the facility for a period of three years:
The owner or operator shall notify the director and submit a copy of each notification within thirty days of the end of the calendar month of any monthly record showing that the monthly volume-weighted average VOC content exceeds the applicable emission limitation.
Where Ad = pounds of VOC emissions allowed for the day.
C = VOC content of surface coating employed, in pounds of VOC per gallon of coating, excluding water and exempt solvents.
D = density of VOC content of surface coating employed, in pounds of VOC per gallon of VOC (a standard density of 7.36 may be used if it is used for all surface coatings employed).
V = volume of surface coating employed for the day, in gallons (excluding water and exempt solvents).
L = emission limitation for the surface coating employed as specified in paragraph (D)(1) or (D)(2) of this rule, in pounds of VOC per gallon of coating (excluding water and exempt solvents).
i = subscript denoting a specific surface coating employed.
n = total number of surface coatings employed in can coating operation.
Where Ed = actual pounds of VOC emissions for the day.
F = fraction by weight of VOC emissions from the surface coating reduced or prevented from being emitted by control equipment, and V, C, i and n are defined as in paragraph (D)(3)(b) of this rule.
VOC content limitations
Coating Type | Pound of VOC/Pound of Coating |
paper, film and foil surface coatings (not including pressure sensitive tape and labels) | 0.08 |
pressure sensitive tape and label surface coatings | 0.067 |
Unless emissions to the atmosphere are controlled by an approved emission control system with an overall control efficiency of at least ninety per cent, any person using an organic solvent for cleanup shall do the following:
VOC content (pound per gallon of coating, less water and exempt solvents)
Coating | Air-Dried Coating (controls not employed) | Baked Coating (controls not employed) |
general one-component | 2.3 | 2.3 |
general multi-component | 2.8 | 2.3 |
solar-absorbent | 3.5 | 3.0 |
heat-resistant | 3.5 | 3.0 |
extreme high-gloss | 2.8 | 3.0 |
metallic | 3.5 | 3.5 |
extreme performance | 3.5 | 3.0 |
pretreatment coatings | 3.5 | 3.5 |
The recommended emission limits can also be expressed in terms of mass of VOC per volume of coating solids, as applied. A facility could use low-VOC coatings or a combination of coatings and add-on control equipment on a coating unit to meet the recommended mass of VOC per volume of coating solids limits. Using an assumed VOC density of 7.36 pounds per gallon, the equivalent limits in terms of mass of VOC per volume of solids, as applied, are as follows:
VOC content (pound per gallon of coating solids, as applied)
Coating | Air-Dried Coating (controls employed) | Baked Coating (controls employed) |
general one-component | 3.3 | 3.3 |
general multi-component | 4.5 | 3.3 |
extreme high gloss | 4.5 | 5.1 |
extreme performance | 6.7 | 5.1 |
heat resistant | 6.7 | 5.1 |
metallic | 6.7 | 6.7 |
pretreatment coatings | 6.7 | 6.7 |
solar absorbent | 6.7 | 5.1 |
A person shall not apply VOC-containing coatings to metal furniture unless the coating is applied with equipment operated according to the equipment manufacturer specifications, and by the use of one of the following methods:
Unless emissions to the atmosphere are controlled by an approved emission control system with an overall control efficiency of at least ninety per cent, any person performing coating related activities shall do the following:
Unless emissions to the atmosphere are controlled by an approved emission control system with an overall control efficiency of at least ninety per cent, any person using an organic solvent for cleanup shall do the following:
VOC content emission limitations (pounds per gallon of coating, less water and exempt solvents)
Coating Type | Air-Dried (controls not employed) | Baked Coating (controls not employed) |
general one-component | 2.3 | 2.3 |
general multi-component | 2.8 | 2.3 |
solar-absorbent | 3.5 | 3.0 |
heat-resistant | 3.5 | 3.0 |
extreme high-gloss | 2.8 | 3.0 |
metallic | 3.5 | 3.5 |
extreme performance | 3.5 | 3.0 |
pretreatment coatings | 3.5 | 3.5 |
The recommended emission limits can also be expressed in terms of mass of VOC per volume of coating solids, as applied. A facility could use low-VOC coatings or a combination of coatings and add-on control equipment on a coating unit to meet the recommended mass of VOC per volume of coating solids limits. Using an assumed VOC density of 7.36 pounds per gallon, the equivalent limits in terms of mass of VOC per volume of solids, as applied, are as follows:
VOC content (pounds per gallon of coating solids, as applied)
Coating | Air-Dried Coating (controls employed) | Baked Coating (controls employed) |
general one-component | 3.3 | 3.3 |
general multi-component | 4.5 | 3.3 |
extreme high gloss | 4.5 | 5.1 |
extreme performance | 6.7 | 5.1 |
heat resistant | 6.7 | 5.1 |
metallic | 6.7 | 6.7 |
pretreatment coatings | 6.7 | 6.7 |
solar absorbent | 6.7 | 5.1 |
A person shall not apply VOC-containing coatings to a large appliance unless the coating is applied with equipment operated according to the equipment manufacturer specifications, and by the use of one of the following methods:
Unless emissions to the atmosphere are controlled by an approved emission control system with an overall control efficiency of at least ninety per cent, any person performing coating related activities shall do the following:
Unless emissions to the atmosphere are controlled by an approved emission control system with an overall control efficiency of at least ninety per cent, any person using an organic solvent for cleanup shall do the following:
If a miscellaneous metal parts or products coating is subject to two or more limits as listed in paragraphs (U)(1)(a) to (U)(1)(i) of this rule, the limit which is least restrictive applies.
The daily usage applicability levels specified in paragraphs (U)(2)(e)(i) to (U)(2)(e)(iii) of this rule is not applicable to coatings employed by the metal parts or products coating line on parts or products which are not metal.
[Comment: An emissions rate is stated in quantity of VOC per unit, such as pounds of VOC per coating.]
The VOC content limits specified above can be met by averaging the VOC content of materials used on a single press, within a single printing line.
Any person or facility subject to this rule that uses VOC-containing clean-up materials shall ensure that VOC emissions are minimized by incorporating the following procedures:
TRE = [a + bW0.88 + cW + dWH + eW0.88 H0.88 + fW0.5] / E
where:
TRE = total resource effectiveness value.
E = maximum hourly VOC emission rate at the vent stream design flowrate (W), in kilograms of VOC per hour (kg/hr).
W = vent stream design flowrate at a standard temperature of twenty degrees Celsius, in standard cubic meters per minute (scm/ min).
H = vent stream net heating value, as determined in accordance with paragraph (P)(2) of rule 3745-21-10 of the Administrative Code; in mega joules per standard cubic meter (106 J/scm); and a, b, c, d, e, and f = applicable coefficients from appendix B to this rule.
TRE = [a + bW0.88 + cW + dWH + eW0.88 H0.88 + f(WH / 3.6)0.5] / E
where TRE, E, W, H, a, b, c, d, e and f are defined as in paragraph (EE)(3)(a)(i) of this rule.
E(mixing) = E(loading) + (E)venting
where:
E(loading) = monthly VOC emissions from loading VOC liquids into mixing tanks
E(venting) = monthly VOC emissions from venting VOC liquids during mixing
E(loading) = monthly sum of Ei(loading) for all VOC liquid "i" loaded into mixing tanks
Ei(loading) = (Pi * Xi * Vi * MWi)/ (R * T)
where:
Ei(loading) = pounds of VOC emissions during the month from loading VOC liquid "i" into mixing tanks
Pi = vapor pressure of VOC liquid "i" at seventy degrees Fahrenheit, in mmHg
Xi = mole fraction of VOC liquid "i" in liquid mix (value of one is used for this emissions estimate)
Vi = volume of VOC liquid "i" charged to mixing tanks during the month in cubic feet (equals monthly gallons of liquid "i" divided by 7.48 gallons per cubic foot)
R = nine hundred ninety-nine mmHg-cubic feet per pound moledegrees Kelvin
T = temperature in degrees Kelvin (equals two hundred seventy-three plus twenty-one degrees Celsius)
MWi = molecular weight of VOC liquid "i", in pounds per pound mole
E(venting) = monthly sum of Ei(venting) for all VOC liquid "i" loaded into mixing tanks
Ei(venting) = (Pi * Xi * Vi,v * MWi)/(R * T)
where:
Ei(venting) = pounds of VOC emissions during the month for venting a VOC liquid "i" during mixing
Pi = vapor pressure of VOC liquid "i" at eighty degrees Fahrenheit, in mmHg
Xi = mole fraction of VOC liquid "i" in liquid mix (a value of one is used for this emissions estimate)
Vi,v = volume (cubic feet) of saturated vapors removed by the ventilation system during mixing of VOC liquid "i" (equals monthly gallons of VOC liquid "i" times five times thirty divided by three hundred fifty based on five per cent of the total ventilation flow rate or five cubic feet per minute, an average mixing time of thirty minutes per batch, and a typical batch size of three hundred and fifty gallons)
R = nine hundred ninety-nine mmHg-cubic feet per pound moledegrees Kelvin
T = temperature in degrees Kelvin (equals two hundred seventy-three plus twenty-seven degrees Celsius)
MWi = molecular weight of VOC liquid "i", in pounds per pound mole
An alternative method for calculating the monthly emissions rate for liquid mixing operations shall be as follows:
E(mixing) = EFM * V(mixing)
where:
EFM = emission factor of 0.00131 pound VOC per pound VOC liquid throughput (this emission factor is based on the highest annual average emission factor for mixing operations during 1997 to 2000)
V(mixing) = monthly throughput of VOC liquid employed for mixing, in pounds
E(filling) = monthly sum of Ei(filling) for all VOC liquid "i" filling of aerosol cans
Ei(filling) = (Pi * Xi * Vi * MWi) / (R * T)
where:
Ei(filling) = pounds of VOC emissions during the month for VOC liquid "i" filling of aerosol cans
Pi = vapor pressure of VOC liquid "i" at seventy degrees Fahrenheit, in mmHg
Xi = mole fraction of VOC liquid "i" in liquid fill (a value of one is used for this emissions estimate)
Vi = volume of VOC liquid "i" filled into aerosol cans during the month in cubic feet (equals monthly gallons of VOC liquid "i" divided by 7.48 gallons per cubic foot)
R = nine hundred ninety-nine mmHg-cubic feet per pound moledegrees Kelvin
T = temperature in degrees Kelvin (equals two hundred seventy-three plus twenty-one degrees Celsius)
MWi = molecular weight of VOC liquid "i", in pounds per pound mole
An alternative method for calculating the monthly emissions for liquid can filling operations shall be as follows:
E(filling) = EFF * V(filling)
where:
EFF = emission factor of 0.00026 pound VOC per pound VOC liquid throughput (this emission factor is based on the highest annual average emission factor for liquid can filling operations during 1997 to 2000)
V(filling) = monthly throughput of VOC liquid employed for can filling, in pounds
EG(total) = EG(filling) + EG(purging) + EG(safety diversions)
where:
EG(filling) = monthly VOC emissions from filling aerosol cans with VOC propellant
EP(purging) = monthly VOC emissions from purging of lines containing VOC propellant
EG(safety diversions) = monthly VOC emissions from safety diversions of VOC control equipment
EG(filling) = monthly sum of (NCp,f,v) * (EFp,f) * (Kp) * (1 -Cep,v/100) * (VOCp)
EP(purging) = monthly sum of (NPp,v) * (Vp) x (LDp) * (1 - Rp) * (1 - CEp,v/100) * (VOCp)
where:
CEp,v = control efficiency for propellant "p" VOC emissions and type of venting "v" for those emissions, based on venting of VOC propellant emissions to thermal incinerator or not and the overall control efficiency of the thermal incinerator for VOC
CEp,v = zero per cent if propellant "p" VOC emissions are not vented to the thermal incinerator
CEp,v = overall VOC control efficiency from most recent compliance test of the thermal incinerator, if propellant "p" VOC emissions are vented to the thermal incinerator
EFp,f = emission factor for VOC propellant gas loss when filling cans with VOC propellant "p", based on propellant filler type "f" (under-the-cup fill, needle fill, or Sepro fill)
EFp,f = 0.2 cubic centimeters per can for needle filling of VOC propellant "p" EFp,f = 1.00 cubic centimeters per can for Sepro filling of VOC propellant "p" EFp,f = 1.75 cubic centimeters per can for under-the-cup filling of VOC propellant "p" Kp = conversion factor for gaseous VOC propellant "p" expressed in pounds per cubic centimeter at standard conditions
LDp = liquid density of VOC propellant "p" at storage temperature and pressure, in pounds per gallon
NCp,f,v = number of cans produced with VOC propellant "p" and filling type "f" during the month by type of venting "v" (vented to thermal incinerator or not vented to thermal incinerator)
NPp,v = number of propellant line purges during the month for VOC propellant "p" by type of venting "v" (vented to thermal incinerator or not vented to thermal incinerator)
Rp = fraction by weight of purged VOC propellant "p" which is recovered and stored in a pressure tank
Vp = volume of propellant line purged for VOC propellant "p", in gallons
VOCp = fraction VOC by weight for VOC propellant "p" (usually one for a VOC containing propellant)
For gasser operations equipped with a thermal incinerator in which the VOC emissions from the filling of aerosol cans with VOC propellant are vented to the thermal incinerator and the line purging of VOC propellant is recovered for use as a fuel in the thermal incinerator, the monthly VOC emissions for filling and line purging shall be calculated as follows:
EG(filling) + EG(purging) = EF * (NC/1000)
where:
EF = VOC emissions factor from most recent compliance test of the thermal incinerator, expressed in pounds VOC per thousand aerosol cans produced (based on the September 24, 2002 compliance test, EF equals 0.16 pound VOC per thousand aerosol cans)
NC = number of aerosol cans produced with VOC propellant during the month
EG(event) = Cavg * MW * Flow * Time * (4.256 x 10 -11)
where:
Cavg = average concentration of VOC propellant in gas stream being vented to ambient air during safety diversion event, in parts per million by volume
MW = molecular weight of VOC propellant being employed in gashouse at time of safety diversion event, in pounds per poundmole
Flow = average flow rate of gas stream being vented to ambient air during safety diversion event, in cubic feet per minute
Time = length of safety diversion event, in seconds
4.256 x 10-11 = constant value based on various unit conversions and division by the Universal Gas Constant at standard conditions
For the manual aerosol can cleaning operations (can brushing operations), VOC emissions shall be equal to the mass of VOC solvent consumed in the operation. The monthly VOC emissions from can brushing shall be calculated as the sum of VOC emissions for all solvents consumed during that month. The VOC emissions from each VOC solvent consumed is calculated as the number of VOC solvent gallons consumed during the month times the VOC solvent density (pounds per gallon).
E(piercing) = sum of Ei(piercing) for all VOC liquid "i" within the cans pierced in the month
Ei(piercing) = (Pi * Xi * Vi * MWi) / (R * T)
Vi = Wi / (7.48 * Di)
Wi = sum of (Wi,c * Nc) for VOC liquid "i" for all cans pierced (by can type and size category "c") during the month where:
Di = density of VOC liquid "i", in pounds per gallon
E(piercing) = total VOC emissions from liquid recovery for all cans pierced in the month, in pounds
Ei(piercing) = pounds of VOC emissions from VOC liquid "i" recovered from cans pierced in the month
MWi = molecular weight of VOC liquid "i", in pounds per pound mole
Nc = number of cans pierced during the month for can type and size category "c" Pi = vapor pressure of VOC liquid "i" at eighty degrees Fahrenheit, in mmHg
R = nine hundred ninety-nine mmHg-cubic feet per pound moledegrees Kelvin
T = temperature in degrees Kelvin (equals two hundred seventy-three plus twenty-seven degrees Celsius)
Xi = mole fraction of VOC liquid "i" in liquid of pierced cans (value of one is used for this emissions estimate)
Vi = volume of VOC liquid "i" within pierced cans for the month, in cubic feet
Wi = amount of VOC liquid "i" within the pierced cans for the month, in pounds
Wi,c = amount of VOC liquid "i" for can type and size category "c", in pounds per can 7.48 = conversion factor in gallons per cubic foot
The owner or operator shall conduct, or have conducted, emissions testing for the thermal incinerator to demonstrate the thermal incinerator's mass emission rate, destruction efficiency, and overall control efficiency for VOC emissions from this facility's gashouse operations in accordance with the following:
Nitrogen flowrate (standard Maximum dynamic back pressure (inches of water) cubic feet per hour)
40 | 0.16 |
60 | 0.35 |
80 | 0.62 |
[Comment: This exemption is appropriate for gasoline dispensing facilities located at a facility or site serving a known fleet of motor vehicle rental agency, governmental agency, or motor vehicle assembly plant.]
[Comment: This rule specifies that, after decommissioning, a facility apply for either a permit-by-rule or permit-to-install and operate. In the event that Ohio EPA has not developed a permit-by-rule for decommissioned stage II facilities, the source owner or operator may apply for a permit-by-rule that conforms to the conditions of the appropriate permit-by-rule form consistent with the requirements of the rule. Ohio EPA will hold the applications in abeyance while the agency finalizes the amendments to rule 3745-31-03 of the Administrative Code to reflect the option of a decommissioned stage II facility.]
Ohio Admin. Code 3745-21-09
Five Year Review (FYR) Dates: 11/29/2026
Promulgated Under: 119.03
Statutory Authority: ORC 3704.03(E)
Rule Amplifies: ORC 3704.03(A), ORC 3704.03(E)
Prior Effective Dates: 10/19/1979, 03/27/1981, 06/21/1982, 01/24/1983, 05/09/1986, 05/25/1988, 08/22/1990, 06/14/1991, 03/31/1993, 01/17/1995, 06/15/1999, 11/05/2002, 03/12/2006, 08/25/2008, 04/02/2009, 05/12/2011, 04/29/2013, 01/17/2014, 10/15/2015, 02/16/2019, 03/27/2022