### R307. Environmental Quality,AirQuality. R307-350. Miscellaneous Metal Parts and Products Coatings. R307-350-1. Purpose. The purpose ofR307-350 is to limit volatile organic compound (VOC) emissions from miscellaneous metal parts andproductscoatingoperations.



### R307-350-2. Applicability. (1) R307-350 applies to sources located in Cache, Davis, SaltLake, Utah and Weber counties where the potential
to emit 

### voe emissions from all miscellaneous metal product parts surface coating operations, including related cleaning activities, is 2.7 tonsperyear ormore. (2) In Box Elder and Tooele counties, R307-350 appliestothe following sources: (a) Existing sources as ofFebruary l, 2013, with the potential to emit 

### 5 tons per year or more of

### voe, including related cleaning activities; and (b) New sources as ofFebruary l, 2013, that have the potential to emit 2.7 tons per year or more of 

### voe, includingrelated cleaning activities. (3) R307-350 applies to, but is not limited to, the following industries: (a) Large farm machinery (harvesting, fertilizing, planting, tractors, combines, etc.); (b) Small farm machinery (lawn and garden tractors, lawn mowers, rototillers, etc.) (c) Small appliance (fans, mixers, blenders, crock pots, vacuumcleaners, etc.); (d) Commercial machinery (computers, typewriters, calculators, vending machines, etc.); (e) Industrial machinery (pumps, compressors, conveyorcomponents, fans, blowers, transformers, etc.); (f) Fabricated metal products (metal covered doors, frames, trailerframes, etc.); and (g) Any other industrial category that coats metal parts or products under the standard Industrial Classification Code of major group 33 (primary metal industries), major group 34 (fabricated metal products), major group 35 (nonelectric machinery), major group 36 (electrical machinery), major group 37 (transportation equipment) major group 38 (miscellaneous instruments), and major group 39 (miscellaneousmanufacturingindustries).



### R307-350-3. Exemptions. (1) The requirements ofR307-350 do not apply to the following: (a) The surface coating of automobiles and lightdutytrucks; (b) Flatmetal sheets and strips in the form ofrolls or coils; (c) Surface coating of aerospace vehicles and components; (d) Automobile refinishing; (e) Theexteriorofmarine vessels; (f) Customized top coating of automobiles and trucks ifproduction is less than 35 vehiclesperday; (g) Military munitions manufactured by or for the ArmedForces oftheUnited States; (h) Operations that are exclusively covered by Department ofDefense military technical data and performed by a Department of Defense contractor and/or on site at installations owned and/or operated by the United States ArmedForces; or (i) Strippingofcured coatings and adhesives. (2) The requirements ofR307-350-5 do not apply to the following:

coatings;

coating. (a) Stencil coatings; (b) Safety-indicatingcoatings; (c) Solid-film lubricants; (d) Electric-insulating and thermal-conducting

(e) Magnetic data storage diskcoatings; or (f) Plastic extruded onto metal parts to form a
(3) Therequirements ofR307-350-6 do not applyto the following: (a) Touch-up coatings; (b) Repaircoatings; or (c) Texturedfinishes.



### R307-350-4. Definitions. The following additional definitions apply to R307- 350: "Aerospace vehicles and component" means any fabricated part, processed part, assembly ofparts, or completed unit, with the exception of electronic components, of any aircraft including but not limited to airplanes, helicopters, missiles, rockets and spacevehicles. "Air dried coating" means coatings that are dried by the use ofair or a forced warm air at temperatures up to 194 degreesFahrenheit. "Baked coating" means coatings that are cured at a temperature at orabove 194 degrees Fahrenheit. "Camouflage coating" means coatings that are used, principally by the military, to conceal equipment from detection. "Coating" means a material applied to a substrate for decorative, protective, orfunctional purposes. (1) Such materials include, but are not limited to, paints, sealants, liquid plastic coatings, caulks, inks, adhesives, andmaskants. (2) Decorative, protective, or functional materials that consist only ofprotective oils for metal, acids, bases, or any combination ofthese substances, or paper film or plastic film which may be pre-coated with an adhesive by the film manufacturer, are notconsidered coatings. "Coating application System" means all operations and equipment that applies, conveys, and dries a surface coating, including, but not limited to, spray booths, flow coaters, flash offareas, airdryers and ovens. "Cured coating or adhesive" means a coating or adhesive, which is drytothe touch. "Department of Defense military technical data"

means a specification that specifies design requirements, suchas materials to be used, how arequirement is to be achieved, or how an item istobe fabricated orconstructed. "Dip coating" means a method ofapplying coatings to a substrate by submersion into and removal from a coating bath. "Electric-insulating varnish" means a nonconvertible-type coating appliedto electricmotors, components ofelectric motors, orpower transformers, to provide electrical, mechanical, and environmental protection orresistance. "Electric-insulatingandthermal-conducting" means a coating that displays an electrical insulation of at least I000 volts DC per mil on a flat test plate and an average thermal conductivity of at least 0.27 BTU per hour-foot-degreeFahrenheit. "Electrostatic application" means a method of applying coating particles or coating droplets to a grounded substratebyelectricallychargingthem. "Etching filler" mean acoatingthatcontains less than 23% solids by weight and at least 0.5% acid by weight, and is used instead ofapplying a pretreatment coating followed by a primer. "Extreme high-gloss coating" means a coating which, when tested by the American Society for Testing Material (ASTM) Test Method D-523 adopted in 1980, shows a reflectance of75ormore ona 60 degree meter. "Extreme performance coatings" means coatings designed for harsh exposure or extreme environmental conditions. "Flow coat" means a non-atomized technique of applying coatings to a substrate with a fluid nozzle in a fan patternwith no airsuppliedto thenozzle. "Heat-resistant coating" means a coating that must withstand a temperature of at least 400 degrees Fahrenheit during normal use. "High-performance architectural coating" means a coating used to protect architectural subsections and which
meets the requirements of the Architectural Aluminum Manufacturer Association's publication number AAMA 605.2- 1980. "High-temperature coating" means a coating that is certified to with-stand a temperature of 1,000 degrees Fahrenheitfor 24hours. "High-volume, low-pressure (HVLP) spray" means a coating application system which is designed to be operated and which is operated between 0.1 and IO pounds per square inch gauge (psig) air pressure, measured dynamically at the centerofthe aircap andthe airhorns. "Magnetic data storage diskcoating" means acoating used on ametal diskwhich stores datamagnetically. "Metallic coating" means a coating which contains

more than 

### 5 grams of metal particles per liter of coating, applied. "Military specification coating" means a coating applied to metal parts and products and which has a formulation approved by a United States military agency for

use onmilitary equipment. "Mold-seal coating" means the initial coating applied to a new mold or repaired mold to provide a smooth surface which, when coated with a mold release coating, prevents productsfrom stickingto themold. "Multi-component coating" means a coating requiring the addition of a separate reactive resin, commonly known as a catalyst or hardener, before application to form an acceptable dryfilm. "One-component coating" means a coating that is ready for application as it comes out ofits containerto form an acceptable dry film. A thinner, necessary to reduce the viscosity, is notconsidered acomponent. "Pan backing coating" means acoating applied to the surface of pots, pans, or other cooking implements that are exposed directlyto aflame orotherheating elements. "Prefabricated architectural component coatings"

means coatings applied to metal parts and products that are to be used as an architectural structure or their appurtenances including, but not limited to, hand railings, cabinets, bathroom and kitchen fixtures, fences, rain-gutters and down-spouts, window screens, lamp-posts, heating and air conditioning equipment, other mechanical equipment, and large fixed stationarytools. "Pretreatment coating" means a coating which contains no more than 12% solids byweight, and at least 0.5% acid, by weight, is used to provide surface etching, and is applied directly to metal surfaces to provide corrosion resistance, adhesion, andeaseofstripping. "Primer" means a coating applied to a surface to provide a firm bond between the substrate and subsequent
coats. "Repair coating" means a coating used to recoat portions of a part or product which has sustained mechanical damagetothe coating. "Safety-indicating coating" means a coating which changes physical characteristics, such as color, to indicate unsafe condition. "Silicone release coating" means any coating which contains silicone resin and is intended to prevent food from stickingto metal surfaces. "Solar-absorbentcoating" means acoating which has

as its primepurposethe absorption ofsolarradiation. "Solid-film lubricant" means a very thin coating consisting ofa binder system containing as its chiefpigment material one or more of molybdenum disulfide, graphite, polytetrafluoroethylene (PTEF) or other solids that act as a dry lubricantbetweenfaying surfaces. "Stencil coating" means an 

### ink or a coating which is rolled or brushed onto a template or stamp in order to add identifying letters ornumberstometal parts andproducts. "Textured finish" means arough surfaceproduced by spraying and splattering large drops of coating onto a previously applied coating. The coatings used to form the appearance of the textured finish are referred to as textured coatings. "Touch-up coating" means a coating used to cover minor coating imperfections appearing after the main coating operation."Vacuum-metalizing coating" means the undercoat applied to the substrate on which the metal is deposited orthe overcoatapplied directly to themetal film.

### R307-350-5. Emission Standards. (I) Each owner or operator shall not apply coatings with a VOC content in excess ofthe amounts specified in Table I or shall use an add-on control device as specified in R307- 350-8.

TABLE I

METAL PARTS AND PRODUCTS 

### voe CONTENT LIMITS (values in pounds of 

### voe per gallon of coating, minus water and exempt solvents (compounds not classified as VOC)), as applied)
COATING CATEGORY 

### voe CONTENT LIMIT

Air Dried Baked
General One Component 2.8 2.3
General Multi Component 2.8 2.3 Camouflage 3.5 3.5
Electric-Insulating 3.5 3.5 varnish Etching Filler 3.5 3.5
Extreme High-Gloss 3.5 3.0
Extreme Performance 3.5 3.0
Heat-Resistant 3.5 3.0 High Performance 6.2 6.2 architectural High Temperature 3.5 3.5
Metallic 3.5 3.5 Military Specification 2.8 2.3
Mold-Seal 3.5 3.5
Pan Backing 3.5 3.5
Prefabricated Architectural 3.5 2.3 Multi-Component

Prefabricated Architectural 3.5 2.3 One-Component

Pretreatment Coatings 3.5 3.5 Repair and Touch Up 3.5 3.0
Silicone Release 3.5 3.5
Solar-Absorbent 3.5 3.0
Vacuum-Metal izing 3.5 3.5
Drum Coating, New, Exterior 2.8 2.8
Drum Coating, New, Interior 3.5 3.5
Drum Coating, Reconditioned, 3.5 3.5 Exterior

Drum Coating, Reconditioned, 4.2 4.2 Interior

(2) Ifmore than one content limit indicated in this section applies to a specific coating, then the most stringent content limit shall apply.



### R307-350-9. Compliance Schedule. All sources shall be in compliance with the requirements ofR307-350by January 1, 2014. 

### KEY: air pollution, emission controls, coatings, miscellaneous metal parts Date of Enactment or Last Substantive Amendment: December3,2013 Authorizing, and Implemented or Interpreted Law: 19-2- 104(1)(a)

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