DAR File No. 38687
This rule was published in the August 1, 2014, issue (Vol. 2014, No. 15) of the Utah State Bulletin.
Environmental Quality, Air Quality
Control of Emissions from Aerospace Manufacture and Rework Facilities
Notice of Proposed Rule
DAR File No.: 38687
Filed: 07/07/2014 10:49:31 AM
Purpose of the rule or reason for the change:
The EPA has indicated that it cannot approve Rule R307-355 as a Reasonable Available Control Technology (RACT) rule as part of Utah's PM2.5 State Implementation Plan (SIP) until it is amended to clarify that the amount of control removal specified in each rule is based on the entire system and the inspection and recordkeeping requirements of the rule are expanded.
Summary of the rule or change:
The rule is amended to require an overall control efficiency of the add-on emission control system of at least 81%, clarify methodology for determining capture efficiency, and to include additional recordkeeping requirements for the add-on emission control system.
State statutory or constitutional authorization for this rule:
- Subsection 19-2-104(1)(a)
Anticipated cost or savings to:
the state budget:
There are no new requirements in this proposed rule for the State of Utah; therefore, there are no anticipated costs or savings.
There are no new requirements for local government; therefore, there are no anticipated costs or savings.
There are two options to reduce the emissions of VOCs. The first, and more cost-effective, option for small businesses is to use products that meet the VOC limits as specified in Table 1. The other option, which likely only very few larger sources would do, is to use an add-on emission control system that meets the 81% efficiency threshold.
persons other than small businesses, businesses, or local governmental entities:
There are no new requirements for persons other than small businesses, or local government entities; therefore, there are no anticipated costs or savings.
Compliance costs for affected persons:
There are two options to reduce the emissions of VOCs. The first, and more cost-effective option for small businesses, is to use products that that meet the VOC limits as specified in Table 1. The other option, which likely only very few larger sources would do, is to use an add-on emission control system that meets the 81% efficiency threshold. It is difficult to determine the cost of installing and operating an add-on emission control system that meets the 81% requirements, as appropriate emission control systems for each source are extremely variable.
Comments by the department head on the fiscal impact the rule may have on businesses:
In most cases businesses will choose to use products that meet the VOC limits in Table 1 of the rule, as that option is usually the most cost-effective. Should a business choose to install and operate an add-on emission control system that meets the 81% overall capture and control efficiency, there would be additional costs to that business. However because appropriate emission control systems for each source are extremely variable, those costs are difficult to predict.
Amanda Smith, Executive Director
The full text of this rule may be inspected, during regular business hours, at the Division of Administrative Rules, or at:Environmental Quality
Air QualityRoom Fourth Floor
195 N 1950 W
SALT LAKE CITY, UT 84116-3085
Direct questions regarding this rule to:
- Mark Berger at the above address, by phone at 801-536-4000, by FAX at 801-536-0085, or by Internet E-mail at firstname.lastname@example.org
Interested persons may present their views on this rule by submitting written comments to the address above no later than 5:00 p.m. on:
This rule may become effective on:
Bryce Bird, Director
R307. Environmental Quality, Air Quality.
R307-355. Control of Emissions from Aerospace Manufacture and Rework Facilities.
The purpose of R307-355 is to limit the emissions of volatile organic compounds (VOCs) from aerospace coatings and adhesives, from organic solvent cleaning, and from the storage and disposal of solvents and waste solvent materials associated with the use of aerospace coatings and adhesives.
R307-355 applies to all aerospace manufacture and rework facilities that have the potential to emit 10 tons or more per year of VOCs and that are located in Box Elder, Cache, Davis, Salt Lake, Utah, Tooele and Weber counties.
(1) R307-355 does not apply:
(a) Where cleaning and coating takes place in research and development, quality control, laboratory testing and electronic parts and assemblies, except for cleaning and coating of completed assemblies;
(b) To manufacturing or rework operations involving space vehicles; and
(c) To rework operations performed on antique aerospace vehicles or components.
The following additional definitions apply to R307-355:
"Aerospace manufacture" and "rework facility" means any installation that produces, reworks, or repairs in any amount any commercial, civil, or military aerospace vehicle or component.
"Antique aerospace vehicle or component" means an aircraft or component thereof that was built at least 30 years ago and would not routinely be in commercial or military service in the capacity for which it was designed.
"Chemical milling maskants" means a coating that is applied directly to aluminum components to protect surface areas when chemical milling the component with a Type I or Type II etchant. Type I chemical milling maskants are used with a Type I etchant and Type II chemical milling maskants are used with a Type II etchant.
"Exempt solvents" means organic chemicals that are not defined as VOC.
"General aviation rework facility" means any aerospace installation with the majority of its revenues resulting from the reconstruction, repair, maintenance, repainting, conversion, or alteration of general aviation aerospace vehicles or components.
"Low vapor pressure hydrocarbon-based cleaning solvent" means a cleaning solvent that is composed of a mixture of photochemically reactive hydrocarbons and oxygenated hydrocarbons and has a maximum vapor pressure of 7 mm Hg at 68 degrees Fahrenheit. These cleaners must not contain hazardous air pollutants.
"Space vehicle" means a man-made device, either manned or unmanned, designed for operation beyond earth's atmosphere. This definition includes integral equipment such as models, mock-ups, prototypes, mold, jigs, tooling, hardware jackets and test coupons. Also included, auxiliary equipment associated with test, transport and storage that through contamination can compromise the space vehicle performance.
"Specialty coating" means a coating that, even though it meets the definition of a primer, topcoat, or self-priming topcoat, has additional performance criteria beyond those of primers, topcoats, and self-priming topcoats for specific applications.
(1) These performance criteria may include, but are not limited to, temperature or fire resistance, substrate compatibility, antireflection, temporary protection or marking, sealing, adhesively joining substrates, or enhanced corrosion protection.
(2) Individual specialty coatings are defined in Appendix A of 40 CFR 63 subpart GG, which is incorporated by reference.
"Topcoat" means a coating that is applied over a primer or component for appearance, identification, camouflage, or protection. Topcoats that are defined as specialty coatings are not included under this definition.
(1) The owner or operator shall not [
cause, permit, or allow ][ the emissions of VOCs from the ]coating[ of aerospace vehicles or components to
(a) 2.9 pounds per gallon of coating, excluding water and exempt solvents, delivered to a coating applicator that applies primers. For general aviation rework facilities, the VOC limitation shall be 4.5 pounds per gallon of coating, excluding water and exempt solvents, delivered to a coating applicator that applies primers;
(b) 3.5 pounds per gallon of coating, excluding water and exempt solvents, delivered to a coating applicator that applies topcoats (including self-priming topcoats). For general aviation rework facilities, the VOC limit shall be 4.5 pounds per gallon of coating, excluding water and exempt solvents, delivered to a coating applicator that applies topcoats (including self-priming topcoats);
(c) 5.2 pounds per gallon of coating, excluding water and exempt solvents, delivered to a coating applicator that applies Type I chemical milling maskant;
(d) 1.3 pounds per gallon of coating, excluding water and exempt solvents, delivered to a coating applicator that applies Type II chemical milling maskants; and
(e) Emissions of VOCs from specialty coatings in excess of the amounts specified in EPA-453/R-97-004, December 1997, page B-2, hereby incorporated by reference.
(2) The owner or operator may alternatively comply with R307-355-5(1)(a) through (d) by using an add-on control device as specified in R307-355-9.
(3) The following coating applications are exempt from the VOC content limits in R307-355-5(1);
(a) Touchup and repair operations.
(b) Use of hand-held spray can application method.
(c) Department of Defense classified coatings.
(d) Coatings of space vehicles.
(e) Facilities that use separate formulations in volumes of less than 50 gallons per year subject to a maximum exemption of 200 gallons total for such formulations applied annually.
R307-355-6. Application Method.
(1) No owner or operator shall apply any primer or topcoat unless the primer and topcoat is applied with equipment operated according to the equipment manufacturer specifications or by the use of one of the following methods:
(a) Electrostatic application;
(b) Flow/curtain coat;
(c) Dip/electrodeposition coat;
(d) Roll coat;
(e) Brush coating;
(f) cotton-tipped swab application;
(g) High-Volume, Low-Pressure (HVLP) Spray;
(h) Hand Application Methods; or
(i) Other coating application methods that achieve emission reductions equivalent to HVLP or electrostatic spray application methods, as determined according to the requirements in 40 CFR 63.750(i).
(2) The following conditions are exempt from R307-355-6(1):
(a) Any situation that normally requires the use of an airbrush or an extension on the spray gun to properly reach limited access spaces.
(b) The application of coatings that contain fillers that adversely affect atomization with HVLP spray guns and that cannot be applied by any of the application methods specified in R307-355-6.
(c) The application of coatings that normally have dried film thickness of less than 0.0013 centimeters (0.0005 inches) and that cannot be applied by any of the application methods specified in R307-355-6.
(d) The use of airbrush application methods for stenciling, lettering, and other identification markings.
(e) The use of hand-held spray can application methods.
(f) Touch-up and repair operations.
(g) Application of specialty coatings.
R307-355-7. Work Practices and Recordkeeping.
(1) Control techniques and work practices
shall be implemented at all times to reduce VOC emissions[
from fugitive type sources]. Control techniques
and work practices shall include, but are not limited to:
(a) Storing all VOC-containing coatings, adhesives, thinners, and coating-related waste materials in closed containers;
(b) Ensuring that mixing and storage containers used for VOC-containing coatings, adhesives, thinners, and coating-related waste material are kept closed at all times except when depositing or removing these materials;
(c) Minimizing spills of VOC-containing coatings, adhesives, thinners, and coating-related waste materials; and
(d) Conveying VOC-containing coatings, adhesives, thinners, and coating-related waste materials from one location to another in closed container or pipes.
(2) All sources subject to R307-355 shall
maintain records demonstrating compliance with[
all provisions of] R307-355[ on an annual basis].
(a) Records shall include, but not be limited to, inventory and product data sheets of all coatings and solvents subject to R307-355.
(b) These records shall be available to the Director upon request.
R307-355-8. Solvent Cleaning.
(1) Hand-wipe cleaning. Cleaning solvents used in hand-wipe cleaning operations shall meet one of the following requirements:
(a) Have a VOC composite vapor pressure less than or equal to 45 mm Hg at 68 degrees Fahrenheit;
(b) Have an aqueous cleaning solvent in which water is at least 80% of the solvent as applied; or
(c) Have a low vapor pressure hydrocarbon-based cleaning solvent.
(2) The following exemptions apply:
(a) Cleaning during the manufacture, assembly, installation, maintenance, or testing of components of breathing oxygen systems that are exposed to the breathing oxygen.
(b) Cleaning during the manufacture, assembly, installation, maintenance, or testing of parts, subassemblies, or assemblies that are exposed to strong oxidizers or reducers (e.g., nitrogen tetroxide, liquid oxygen, hydrazine).
(c) Cleaning and surface activation prior to adhesive bonding.
(d) Cleaning of electronics parts and assemblies containing electronics parts.
(e) Cleaning of aircraft and ground support equipment fluid systems that are exposed to the fluid, including air-to-air heat exchangers and hydraulic fluid systems.
(f) Cleaning of fuel cells, fuel tanks, and confined spaces.
(g) Surface cleaning of solar cells, coated optics, and thermal control surfaces.
(h) Cleaning during fabrication, assembly, installation, and maintenance of upholstery, curtains, carpet, and other textile materials used on the interior of the aircraft.
(i) Cleaning of metallic and nonmetallic materials used in honeycomb cores during the manufacture or maintenance of these cores, and cleaning of the completed cores used in the manufacture of aerospace vehicles or components.
(j) Cleaning of aircraft transparencies, polycarbonate, or glass substrates.
(k) Cleaning and solvent usage associated with research and development, quality control, or laboratory testing.
(l) Cleaning operations, using nonflammable liquids, conducted within five feet of energized electrical systems.
(3) Flush cleaning. Cleaning solvents used in flush cleaning of parts, assemblies and coating unit components must be emptied into an enclosed container or collection system that is kept closed when not in use.
(4) Spray gun cleaning. All spray guns shall be cleaned by one or more of the following methods:
(a) Enclosed system that is closed at all times except when inserting or removing the spray gun. If leaks in the system are found, repairs shall be made as soon as practicable, but no later than 15 days after the leak was found. If the leak is not repaired by the 15th day, the cleaning solvent shall be removed and the enclosed cleaner shall be shut down until the leak is repaired or its use is permanently discontinued.
(b) Nonatomized cleaning.
(i) Spray guns shall be cleaned by placing cleaning solvent in the pressure pot and forcing it through the gun with the atomizing cap in place.
(ii) No atomizing air is to be used.
(iii) The cleaning solvent from the spray gun shall be directed into a vat, drum, or other waste container that is closed when not in use.
(c) Disassembled spray gun cleaning.
(i) Spray guns shall be cleaned by disassembling and cleaning the components by hand in a vat, which shall remain closed at all times except when in use.
(ii) Spray gun components shall be soaked in a vat, which shall remain closed during the soaking period and when not inserting or removing components.
(d) Atomizing spray into a waste container that is fitted with a device designed to capture atomized solvent emissions.
(e) Cleaning of the nozzle tips of automated spray equipment systems, except for robotic systems that can be programmed to spray into a closed container, shall be exempt from these requirements.
Optional ]Add-On Control[ s].
(1) The owner or operator may install and maintain an
incinerator, carbon adsorption, or any other add-on emission
control device, provided that the emission control device will
attain at least 81% efficiency performance. (2) The owner or operator of a control device system
shall provide documentation that the emission control system will
attain the requirements of R307-355-9. (3) Emission control systems shall be operated and
maintained in accordance with the manufacturer recommendations.
The owner or operator shall maintain for a minimum of two years
records of operating and maintenance sufficient to demonstrate
that the equipment is being operated and maintained in accordance
with the manufacturer recommendations.
R307-355-10. Compliance Schedule.
All sources within Box Elder, Cache, Davis, Salt Lake,
Tooele, Utah and Weber counties shall be in compliance by January
]KEY: air pollution, coating, aerospace
Date of Enactment or Last Substantive Amendment: [
February 1, 2013]
Authorizing, and Implemented or Interpreted Law: 19-2-104(1)(a)
More information about a Notice of Proposed Rule is available online.
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For questions regarding the content or application of this rule, please contact Mark Berger at the above address, by phone at 801-536-4000, by FAX at 801-536-0085, or by Internet E-mail at email@example.com. For questions about the rulemaking process, please contact the Division of Administrative Rules.