Protecting Public Health and the Environment.

Environmental Assistance for Hot-Mix Asphalt Plants

Hot mix asphalt plants in Idaho can be impacted by various environmental regulations depending on the specific activities and services provided.

Air Quality Regulations

Hot mix asphalt plants (HMAs) emit air pollutants into the atmosphere and therefore may be regulated by state and federal regulations. HMAs typically require an air quality permit. Hot mix asphalt facilities also must comply with DEQ's fugitive dust, visible emissions, and open burning regulations. When relocating equipment, facilities must notify DEQ by completing a Portable Equipment Relocation Form.

Hazardous Waste Regulations

Hot mix asphalt plants can generate hazardous waste and, therefore, must comply with the federal Resource Conservation and Recovery Act (RCRA), which is administered by DEQ. Under RCRA, facilities that generate hazardous waste are required to follow specific practices and procedures associated with the safe management of hazardous waste. The type and number of requirements that must be complied with are based on the quantity and type of waste generated.

Water Quality Regulations

Hot mix asphalt plants can have an impact on Idaho's surface and ground waters and may be subject to federal water quality standards and the National Pollutant Elimination Discharge System (NPDES) program. Under this program, the U.S. Environmental Protection Agency (EPA) regulates the discharge of pollutants into any water body of the U.S., including storm water sewer systems. Depending on the activities and services provided, a hot mix asphalt plant may need its own NPDES general permit for direct or indirect discharge. If the plant is located within a city that has an NPDES permit, it may be subject to the city's pretreatment and storm water requirements.

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DEQ Resources

Measuring Visible Emissions at Your Facility

A Guide to Visible Emissions Evaluations

Related Pages

Hot-Mix Asphalt Plants

Visible Emissions