Hot Mix Asphalt Plants: Response to Comments on Testing Program for AsphaltPlants C and D

摘要

The United States Environmental Protection Agency (EPA) Emission Factors andInventory Group (EFIG) is investigating the Hot Mix Asphalt industry to identify and quantify criteria and hazardous air pollutants (HAP's) emitted from transport truck loading and silo filling. EFIG requested that EPA's Emission Measurement Center (EMC) conduct the required testing. Under separate EPA contracts, Midwest Research Institute (MRI) and Pacific Environmental Services (PES) performed two emissions tests. The primary objective f the testing program was to characterize uncontrolled emissions of the criteria pollutants particulate matter (PM) and total hydrocarbons (THC) and emissions of volatile and semi-volatile organic HAP's including polycyclic organic matter, phenol, benzene, toluene, xylene, ethylbenzene, 2-butanone, cumene, formaldehyde, hexane, isooctane and others. The two test reports were distributed for comments to environmental groups, state air pollution agencies, consultants and industry. This document summarizes the comments received, presents detailed responses to the comments and identifies how the comment will be accommodated in the report.