Utah Code R307-209-10 - Asphalt Plant Requirements

(1) An owner or operator of an asphalt plant shall comply with the following:

(a) ensure opacity does not exceed 10% opacity and opacity observations shall be conducted in accordance with 40 CFR 60, Method 9;

(b) use natural gas, propane, fuel oil, on-specification used oil as defined in Rule R315-15, or any combination thereof as fuel;

(c) maintain records of fuel use;

(d) control particulate emissions from each storage silo with a fabric filter, a baghouse, a bin vent, or a dust collector;

(e) control particulate emissions from each asphalt mixer with a baghouse;

(f) maintain the pressure drop of the asphalt plant baghouse between 3.0 and 7.0 inches of water during operation and additionally the owner or operator shall comply with the following:

(i) install a pressure gauge on each baghouse;

(ii) ensure the pressure gauge measures the pressure drop in 1-inch water column increments or less;

(iii) calibrate the pressure gauge according to the manufacturer's instructions at least once every 12 months; and

(iv) record the reading of the pressure gauge at least once per operating day.

(2) The owner or operator shall:

(a) ensure filterable PM2.5 emissions do not exceed 0.024 grains per dry standard cubic foot;

(b) conduct an initial stack test on each asphalt plant within 180 days after startup;

(c) conduct a stack test on each asphalt plant within three years after the date of the most recent stack test;

(d) conduct stack testing according to Rule R307-165; and

(e) determine PM2.5 emissions by 40 CFR 60, Appendix A, Method 5.

Notes

Utah Code R307-209-10

Adopted by Utah State Bulletin Number 2025-08, effective 3/31/2025