11 1 Hot Mix Asphalt Plants US EPA . 11 1 Hot Mix Asphalt Plants 11 1 1 General1 3 23 392 394 Hot mix asphalt HMA paving materials are a mixture of size graded high quality aggregate Figure 11 1 1 General process flow diagram for batch mix asphalt plants source classification codes in parentheses 3 condensation of vapor into particles during cooling of organic