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 October 1, 2019, please see the codification segue page.

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

R307. Environmental Quality, Air Quality.

Rule R307-304. Solvent Cleaning.

As in effect on October 1, 2019

Table of Contents

R307-304-1. Purpose.

The purpose of R307-304 is to limit volatile organic compound (VOC) emissions from solvent cleaning operations.

R307-304-2. Applicability.

(1) R307-304 applies to solvent cleaning operations within Box Elder, Cache, Davis, Salt Lake, Tooele, Utah or Weber counties.

(2) Before September 1, 2018, R307-304 applies to an owner or operator using 720 gallons or more a year of VOC containing solvent products, minus exempt materials, for solvent cleaning operations.

(3) Effective September 1, 2018, R307-304 shall apply to an owner or operator using 55 gallons or more a year of VOC containing solvent products, minus exempt materials, for solvent cleaning operations.

R307-304-3. Exemptions.

(1) The requirements of R307-304 do not apply to the operations that are subject to R307-342 through R307-347 and R307-349 through R307-355.

(2) Shipbuilding and repair and fiberglass boat manufacturing materials.

(3) Operations that are exclusively covered by Department of Defense 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 Armed Forces are exempt from the requirements of R307-304.

(4) Janitorial cleaning.

(5) Graffiti removal.

(6) Solvent cleaning in laboratory tests and analysis and research and development projects.

(7) Cleaning with aerosol products.

(8) Cleaning solvents that are defined as a consumer product in R307-357 are exempt from R307-304 and are regulated under the requirements in R307-357.

(9) Cleaning of solar cells, laser hardware, scientific instruments, and high-precision optics.

R307-304-4. Definitions.

The following additional definitions apply to R307-304:

"Solvent cleaning" means operations performed using a liquid that contains any VOC, or combination of VOCs, which is used to clean parts, tools, machinery, equipment and work areas. Cleaning operations include, but are not limited to, spraying, wiping, flushing, and purging. Solvent cleaning does not include degreasing operations subject to R307-335.

"Janitorial cleaning" means the cleaning of building floors, ceilings, walls, windows, doors, stairs, bathrooms, office surfaces and equipment.

R307-304-5. VOC Content Limits.

(1) No person shall use solvent products 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 R307-304-7 or the alternative method in R307-304-5(2).

                                                    TABLE 1

                                 Solvent Cleaning VOC Limits (excluding water and exempt
                               solvents from the definition of volatile organic compounds
                                                  found in R307-101-2)

Solvent Cleaning Category               VOC Limit  (lb/gal)    (g/L)

Coatings, adhesives and ink manufacturing       4.2             500
Electronic parts and components                 4.2             500
Medical devices and pharmaceutical
Tools, equipment and machinery                  6.7             800
General surface cleaning                        5.0             600
Screening printing operations                   4.2             500
Semiconductor tools, maintenance
and equipment cleaning                          6.7             800
Advanced composites manufacturing               6.7             800
Baby and child care diapers manufacturing       5.0             500

(2) As an alternative to the limits in Table 1 and for all general miscellaneous cleaning operations, a person may use a cleaning material with a VOC composite vapor pressure no greater than 8 mm Hg at 20 degrees Celsius.

R307-304-6. Work Practices.

An owner or operator shall store used applicators and shop towels in closed fireproof containers.

R307-304-7. Add-on Emission Control Systems Operations.

(1) If an add-on control system is used, the owner or operator shall install and maintain the add-on control system in accordance with the manufacturer recommendations and maintain an overall capture and control efficiency of at least 85%. 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.

R307-304-8. Recordkeeping.

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

(a) The VOC content or composite vapor pressure of the solvent product applied and

(b) If an add-on control device is used, key system parameters necessary to ensure compliance with R307-304-7.

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

(ii) Key inspection parameters must 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 shall be maintained for 2 years.

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


air pollution, solvent cleaning, solvent use

Date of Enactment or Last Substantive Amendment

December 6, 2017

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.