Will you be working with concrete on your project? Do you have a designated area for concrete washout water?

Implementing proper best management practices (BMPs) to contain concrete washout water during construction activities should be considered to prevent it from discharging to a drainage system or receiving water body.

Managing concrete waste and washout water during construction is important because wash water contains toxic metals and is caustic and corrosive. Concrete wash water can be harmful to aquatic resources and should be handled appropriately during construction activities.

Effective BMPs for managing concrete waste and wash water include:

  • Properly store concrete materials away from runoff and under cover
  • Avoid mixing excess concrete
  • Designate an area for storing hardened concrete and concrete washout water
  • Collect and contain all concrete waste and washout water

Inspection of BMPs for managing concrete waste should include inspecting the designated storage areas and washout area. Plastic linear bins used to contain concrete waste and wash water should be free of tears and holes to ensure proper containment. Ensure designated storage area has adequate capacity.

Maintenance of designated concrete washout areas includes avoiding overfilling designated storage area, removing and disposing of any hardened concrete, and repairing or replacing plastic liner if damaged.

Remember that proper planning on construction projects and implementing effective BMPs regarding concrete washout water will prevent pollutants from entering storm drains and receiving water bodies.