Hazardous Substance Control Toolbox Talk

Construction sites commonly use hazardous substances such as fuels, oils, hydraulic fluids, paints, solvents, adhesives, concrete additives, pesticides, and cleaning chemicals. If these materials are not properly managed, they can contaminate soil, waterways, vegetation, and wildlife habitats while creating health and safety hazards for workers. Effective hazardous substance control protects both people and the environment by preventing spills, leaks, and improper disposal.

This toolbox talk reviews safe handling, storage, spill prevention, and environmental protection practices for hazardous substances used during construction activities.

Why This Matters

• Hazardous substances can contaminate soil, groundwater, streams, wetlands, and other sensitive habitats.
• Pollution can harm wildlife, native vegetation, and aquatic ecosystems.
• Proper storage and handling reduce the risk of spills, fires, and worker exposure.
• Good hazardous substance management supports project environmental requirements and applicable regulations.
• Preventing releases is safer, less costly, and less disruptive than cleaning up contamination.

Common Hazardous Substance Hazards

• Fuel, oil, or hydraulic fluid leaks from vehicles and equipment.
• Improper storage of chemicals near waterways or storm drains.
• Spills during refueling, transfer, or mixing operations.
• Unlabeled or damaged chemical containers.
• Improper disposal of hazardous waste or contaminated materials.
• Incompatible chemicals stored together.
• Failure to use secondary containment where required.
• Poor housekeeping allowing leaks or spills to spread.

Safety Checklist

Before Work Begins

• Review the project's hazardous substance management procedures.
• Identify hazardous materials that will be used during the shift.
• Inspect containers, hoses, valves, and equipment for leaks or damage.
• Verify spill kits, absorbent materials, and emergency equipment are available and accessible.
• Store hazardous substances in approved containers and designated storage areas.
• Ensure containers are properly labeled and kept closed when not in use.

During the Workday

• Handle hazardous substances according to manufacturer instructions and company procedures.
• Use secondary containment where required during storage and transfer operations.
• Keep hazardous substances away from drains, waterways, wetlands, and environmentally sensitive areas.
• Clean up small spills promptly using approved procedures and report larger releases immediately.
• Dispose of hazardous waste through approved collection and disposal processes.
• Maintain good housekeeping to reduce the risk of leaks, spills, and contamination.

Crew Talking Points

• Which hazardous substances will be used on today's job?
• Where are the designated storage areas and spill kits located?
• What steps help prevent spills during fueling or chemical transfers?
• How should hazardous waste be managed on this project?
• What actions should be taken if a spill threatens a waterway or wildlife habitat?
• Speak up immediately if you notice leaking equipment, damaged containers, missing labels, or unsafe chemical storage.

Stop Work If

• A hazardous substance spill cannot be safely contained.
• Hazardous materials threaten to enter a waterway, storm drain, or environmentally sensitive area.
• Containers are leaking, damaged, or improperly labeled.
• Required spill response equipment or secondary containment is unavailable.
• Hazardous substances are being stored or disposed of improperly.
• You are unsure how to safely handle or manage a hazardous substance.

Final Reminder

Hazardous substance control protects workers, wildlife, water resources, and surrounding ecosystems. Store chemicals safely, inspect containers regularly, prevent spills, maintain good housekeeping, and respond quickly to any release. Every worker has a responsibility to prevent environmental contamination and help ensure construction activities are carried out safely and responsibly.