Hot Mix Asphalt (hereafter referred to as asphalt) is a proportioned mixture of dried aggregate and liquid asphaltic concrete cement used as roadway paving material. Aggregate is a graded mixture of crushed stone, sand and recycled asphalt paving (RAP). Liquid asphaltic concrete cement is a mixture of hundreds of organic compounds which remain after crude oil refining.
There are 158 asphalt plants that have a DAQ Air Quality Permit as of March 1, 2012.
For information on scheduled public hearings, permit decisions and other current events related to asphalt plants, please check the DAQ webpage News & Public Outreach Section.
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