As used in this part:

1. (1) "Air quality standards" means vehicle emission standards equal to or greater than the standards established in bin 4 in Table S04-1 of 40 C.F.R. 86.1811-04(c)(6).

2. (2) "Alternative fuel" means:

   1. (a) propane, natural gas, or electricity; or

   2. (b) other fuel that the board determines, by rule, to be:

      1. (i) at least as effective in reducing air pollution as the fuels listed in Subsection (2)(a); or
      2. (ii) substantially more effective in reducing air pollution as the fuel for which the engine was originally designed.
3. (3) "Board" means the Air Quality Board.
4. (4) "Clean fuel grant" means a grant awarded under this part from the Conversion to Alternative Fuel Grant Program Fund created in Section 19-1-403.3 for reimbursement for a portion of the incremental cost of an OEM vehicle or the cost of conversion equipment.

5. (5) "Conversion equipment" means equipment designed to:

   1. (a) allow an eligible vehicle to operate on an alternative fuel; and

   2. (b) reduce an eligible vehicle's emissions of regulated pollutants, as demonstrated by:

      1. (i) certification of the conversion equipment by the Environmental Protection Agency or by a state or country that has certification standards that are recognized, by rule, by the board;
      2. (ii) testing the eligible vehicle, before and after the installation of the equipment, in accordance with 40 C.F.R. Part 86, Control of Emissions from New and In-Use Highway Vehicles and Engines, using all fuel the motor vehicle is capable of using;
      3. (iii) for a retrofit natural gas vehicle that is retrofit in accordance with Section 19-1-406, satisfying the emission standards described in Section 19-1-406; or
      4. (iv) any other test or standard recognized by board rule, made in accordance with Title 63G, Chapter 3, Utah Administrative Rulemaking Act.
6. (6) "Cost" means the total reasonable cost of a conversion kit and the paid labor, if any, required to install it.
7. (7) "Director" means the director of the Division of Air Quality.
8. (8) "Division" means the Division of Air Quality, created in Subsection 19-1-105(1)(a).

9. (9) "Eligible vehicle" means a:

   1. (a) commercial vehicle, as defined in Section 41-1a-102;
   2. (b) farm tractor, as defined in Section 41-1a-102; or
   3. (c) motor vehicle, as defined in Section 41-1a-102.

Repealed by Chapter 379, 2026 General Session