DOT Hazardous Materials and Waste Labels in Construction Environments

Hazardous materials are a common presence on construction sites, where workers may handle, transport, or dispose of chemicals that can cause serious injuries or long-term health effects. The single most effective way to protect yourself is to understand the container labels that identify these materials and their associated hazards. This course explains the information found on Department of Transportation (DOT) hazard class labels and Environmental Protection Agency (EPA) hazardous waste labels, and shows construction workers how to use that information to recognize dangers and stay safe on the job.

Course Highlights

• Why container labels are a primary source of hazmat information, and how OSHA, the DOT, and the EPA each regulate labeling for the materials under their authority
• How the OSHA Hazard Communication Standard (HazCom), the Globally Harmonized System (GHS), and the 2024 final rule shape the labels construction workers encounter on the jobsite
• The minimum information required on workplace labels, including labels on secondary containers such as buckets and spray bottles commonly used in the field
• How to read DOT hazard class labels and placards, including their diamond shape, size requirements, pictograms, and hazard class numbers
• The nine DOT hazard classes—explosives, gases, flammable and combustible liquids, flammable solids, oxidizers and organic peroxides, poisons, radioactive materials, corrosives, and miscellaneous hazards
• The DOT color-coding scheme and how colors allow hazards to be identified from a distance, even when the text cannot be read
• How United Nations (UN) identification numbers provide a worldwide, material-specific reference for first responders
• EPA hazardous waste labeling requirements, including EPA waste identification numbers, accumulation labels, overpack drum labeling, and how to handle unlabeled containers found on site

By the end of the course, you will have learned

• How to read and interpret DOT hazard class labels using their colors, text, and pictograms
• How to identify which of the nine DOT hazard classes a material belongs to and what type of hazard each class represents
• Where DOT placards are displayed on trucks and other conveyances and what their size and visibility requirements mean for you
• How to use UN identification numbers to quickly identify a specific hazardous material
• Why an EPA waste identification number must be assigned to every discarded hazardous substance, and what EPA hazardous waste labels must include
• How to respond when you encounter an unlabeled container, including treating it as hazardous and notifying your supervisor
• How understanding hazmat labels helps you prevent exposure incidents and keep yourself, your coworkers, and your jobsite safe