Utah Administrative Code

The Utah Administrative Code is the body of all effective administrative rules as compiled and organized by the Division of Administrative Rules (see Subsection 63G-3-102(5); see also Sections 63G-3-701 and 702).

NOTE: For a list of rules that have been made effective since January 1, 2020, please see the codification segue page.

NOTE TO RULEFILING AGENCIES: Use the RTF version for submitting rule changes.

R307. Environmental Quality, Air Quality.

Rule R307-354. Automotive Refinishing Coatings.

As in effect on January 1, 2020

Table of Contents

R307-354-1. Purpose.

The purpose of R307-354 is to limit volatile organic compound emissions (VOC) from automotive refinishing sources.

R307-354-2. Applicability.

(1) R307-354 applies to automotive refinishing coating operations located in Box Elder, Cache, Davis, Salt Lake, Tooele, Utah and Weber counties.

(2) Before September 1, 2018, R307-354 applies to an automotive refinishing operations that have the potential to emit 2.7 tons per year or more of VOC, including related cleaning activities.

(3) Effective September 1, 2018, R307-354 shall apply to an automotive refinishing operation that uses a combined 20 gallons or more of coating products and associated solvents per year.

R307-354-3. Exemptions.

The requirements of R307-354 shall not apply to any canned aerosol coating products.

R307-354-4. Definitions.

The following additional definitions apply to R307-354:

"Adhesion promoter" means a coating which is labeled and formulated to be applied to uncoated plastic surfaces to facilitate bonding of subsequent coatings, and on which, a subsequent coating is applied.

"As applied" means the volatile organic compound and solids content of the finishing material that is actually used for coating the substrate. It includes the contribution of materials used for in-house dilution of the finishing material.

"Automotive" means passenger cars, vans, motorcycles, trucks, buses, golf carts and all other mobile equipment.

"Automotive refinishing" means the process of coating automobiles, after-market automobiles, motorcycles, light and medium-duty trucks and vans that are performed in auto body shops, auto repair shops, production paint shops, new car dealer repair and paint shops, fleet operation repair and paint shops, and any other facility which coats vehicles under the Standard Industrial Classification Code 7532 (Top, Body and Upholstery Repair Shops and Paint Shops). This includes dealer repair of vehicles damaged in transit. It does not include refinishing operations for other types of mobile equipment, such as farm machinery and construction equipment or their parts, including partial body collision repairs, that is subsequent to the original coating applied at an automobile original equipment manufacturing plant.

"Clear coating" means any coating that contains no pigments and is labeled and formulated for application over a color coating or clear coating.

"Color coating" means any pigmented coating, excluding adhesion promoters, primers, and multi-color coatings, that requires a subsequent clear coating and which is applied over a primer, adhesion promoter, or color coating. Color coatings include metallic and iridescent color coatings.

"Enclosed paint gun cleaner" means a cleaner consisting of a closed container with a door or top that can be opened and closed and fitted with cleaning connections. The spray gun is attached to a connection, and solvent is pumped through the gun and onto the exterior of the gun. Cleaning solvent falls back into the cleaner's solvent reservoir for recirculation.

"Metallic/Iridescent color coating" means a coating which contains iridescent particles, composed of either metal as metallic particles or silicon as mica particles, in excess of 0.042 pounds per gallon as applied, where such particles are visible in the dried film.

"Multi-color coating" means a coating which exhibits more than one color when applied, and which is packaged in a single container and applied in a single coat.

"Non-enclosed paint gun cleaner" means cleaner consisting of a basin similar to a sink in which the operator washes the outside of the gun under a solvent stream. The gun cup is filled with recirculated solvent, the gun tip is placed into a canister attached to the basin, and suction draws the solvent from the cup through the gun. The solvent gravitates to the bottom of the basin and drains through a small hole to a reservoir that supplies solvent to the recirculation pump.

"Pretreatment coating" means a coating which contains no more that 16% solids, by weight, and at least 0.5% acid, by weight, is used to provide surface etching, and is applied directly to bare metal surfaces to provide corrosion resistance and promote adhesion for subsequent coatings.

"Primer" means any coating which is labeled and formulated for application to a substrate to provide a bond between the substrate and subsequent coats; corrosion resistance; a smooth substrate surface; or resistance to penetration of subsequent coats, and on which a subsequent coating is applied. Primers may be pigmented.

"Primer sealer" means any coating which is labeled and formulated for application prior to the application of a color coating for the purpose of color uniformity, or to promote the ability of the underlying coating to resist penetration by the color coating.

"Single-stage coating" means any pigmented coating, excluding primers and multi-color coatings, labeled and formulated for application without a subsequent clear coat. Single-stage coatings include single-stage metallic/iridescent coatings.

"Solids" means the part of the coating that remains after the coating is dried or cured; solids content is determined using data from EPA Method 24.

"Temporary protective coating" means any coating which is labeled and formulated for the purpose of temporarily protecting areas form overspray or mechanical damage.

"Topcoat" means any coating or series of coatings applied over a primer or an existing finish for the purpose of protection or beautification.

"Truck bed liner coating" means any coating, excluding clear, color, multi-color, and single-stage coatings, labeled and formulated for application to a truck bed to protect it from surface abrasion.

"Underbody coating" means any coating labeled and formulated for application to wheel wells, the inside of door panels or fenders, the underside of a trunk or hood, or the underside of a motor vehicle.

"Uniform finish coating" means any coating labeled and formulated for application to the area around a spot repair for the purpose of blending a repaired area's color or clear coat to match the appearance of an adjacent area's existing coating.

R307-354-5. VOC Content Limits.

No owner or operator shall apply coatings with a VOC content greater than the amounts specified in Table 1, unless the owner or operator uses an add-on control device as specified in R307-354-7.

                                                    TABLE 1

                                            AUTOMOTIVE REFINISHING VOC LIMITS
                             (values in pounds of VOC per gallon of coating, minus water and
                             exempt solvent (compounds not defined as VOC in R307-101-2), as

Coating Category                   VOC Content Limits (lb/gal)

Adhesion Promoter                                4.5

Clear Coating                                    2.1

Color Coating                                    3.5

Multi-color Coating                              5.7

Pretreatment Coating                             5.5

Primer                                           2.1

Primer Sealer                                    2.1

Single-stage Coating                             2.8

Temporary Protective Coating                     0.5

Truck Bed Liner Coating                          2.6

Underbody Coating                                3.6

Uniform Finish Coating                           4.5

Any Other Coating Type                           2.1

R307-354-6. Work Practice.

(1) Control techniques and work practices are to be implemented at all times to reduce VOC emissions. Control techniques and work practices include:

(a) Closed containers shall be used for the disposal of solvent wiping cloths;

(b) Minimizing spills of VOC-containing cleaning materials;

(c) Conveying VOC-containing materials from one location to another in closed containers or pipes; and

(d) Cleaning spray guns in enclosed systems or in a non-enclosed paint gun cleaning process may be used if the vapor pressure of the cleaning solvent (excluding water and solvents exempt from the definition of VOCs) is less than 100 mm Hg at 68 degrees Fahrenheit and the solvent is directed towards a drain that leads directly to an enclosed remote reservoir. Automotive spray gun solvent cleaning materials that are defined as a "consumer product" under R307-357 are exempt from the vapor pressure requirement and are regulated under the requirements in R307-357.

(2) Application equipment requirements:

(a) A person shall not apply any coating to an automotive part or component unless the coating application method achieves a minimum 65% transfer efficiency. The following coating application methods have been demonstrated to achieve a minimum of 65% transfer efficiency:

(i) Brush, dip or roll coating operated in accordance with the manufacturers specifications;

(ii) Electrostatic application equipment operated in accordance with the manufacturers specifications; and

(iii) High Volume, Low Pressure spray equipment operated in accordance with the manufacturers specifications.

(3) Other coating application methods may be used that have been demonstrated to be capable of achieving at least 65% transfer efficiency, as certified by the manufacturer.

R307-354-7. Add-On Controls Systems Operations.

(1) If an add-on control system is used, the owner or operator shall install and maintain the add-on emission control system in accordance with the manufacturer recommendations and maintain 90% or greater capture and control efficiency. The overall capture and control efficiency shall be determined using EPA approved methods, as follows.

(a) The capture efficiency of a VOC emission control system's VOC collection device shall be determined according to EPA's "Guidelines for Determining Capture Efficiency," January 9, 1995 and 40 CFR Part 51, Appendix M, Methods 204-204F, as applicable.

(b) The control efficiency of a VOC emission control system's VOC control device shall be determined using test methods in Appendices A-1, A-6, and A-7 to 40 CFR Part 60, for measuring flow rates, total gaseous organic concentrations, or emissions of exempt compounds, as applicable.

(c) An alternative test method may be substituted for the preceding test methods after review and approval by the EPA Administrator.

R307-354-8. Recordkeeping.

(1) The owner or operator shall maintain records of the following:

(a) Records that demonstrate compliance with R307-354. Records shall include, but are not limited to, inventory and product data sheets of all coatings and solvents subject to R307-354.

(b) If an add-on control device is used, records of key system parameters necessary to ensure compliance with R307-354-7.

(i) Key system parameters shall include, but are not limited to, temperature, pressure, flow rates, and an inspection schedule.

(ii) Key inspection parameters shall be in accordance with the manufacturer's recommendations, and as required to demonstrate operations are providing continuous emission reduction from the source during all periods that the operations cause emissions from the source.

(2) All records must be maintained for a minimum of 2 years.

(3) Records must be made available to the director upon request.


air pollution, automotive refinishing, VOC, coatings

Date of Enactment or Last Substantive Amendment

December 6, 2017

Notice of Continuation

March 8, 2018

Authorizing, Implemented, or Interpreted Law


Additional Information


For questions regarding the content or application of rules under Title R307, please contact the promulgating agency (Environmental Quality, Air Quality). A list of agencies with links to their homepages is available at http://www.utah.gov/government/agencylist.html or from http://www.rules.utah.gov/contact/agencycontacts.htm.