What is a compliant practice for storing hazardous waste before disposal?

• A. Label only when you have time.
• B. Store hazardous waste in appropriately labeled containers with contents and date, segregated by type.
• C. Store mixed with other nonhazardous waste.
• D. No labeling required if the waste is small.

Answer: (B)

Storing hazardous waste in a compliant way centers on clear identification, timely disposal, and preventing dangerous interactions. Use containers that are appropriate for the waste and designed to prevent leaks, keep them closed when not actively adding waste, and label each container with both its contents and the date the waste was placed in the container. Separating wastes by type or hazard class is essential to avoid incompatibilities that could cause reactions, heat buildup, or releases in storage. This labeling and segregation support safe handling by staff, accurate inventory and tracking, and quick, effective responses in an emergency.

Practices that skip timely labeling, mix hazardous waste with nonhazardous waste, or omit labeling for small amounts fail to meet safety and regulatory expectations.