1. "Blue smoke" means a mixture of visible emissions and VOC emissions from HMA plants that results from the process of mixing hot oil with aggregate.
2. "Dryer" means a piece of machinery where aggregate is dried and heated during the asphalt manufacturing process, usually drum or cylinder shaped.
3. "Load out" means an area used for the loading of material from a silo or a batch tower into a truck or train or other means of transport, often located under a silo.
4. "Silo" means a tower used to store material.
5. "Storage tank" means any storage vessel where oils are heated and stored before mixing with aggregate.
6. "Warm mix asphalt" means asphalt produced at a temperature at or below 275 degrees F (135 degrees C).

Terms defined in Section R307-312-3 also apply to this rule.

KEY: air pollution, volatile organic compounds, VOC, hot mix asphalt, asphalt, aggregate, blue smoke

Date of Last Change: March 24, 2023

Authorizing, and Implemented or Interpreted Law: 19-2-104