Construction debris contaminated with hazardous waste is best disposed by which method?

Construction debris contaminated with hazardous waste is best disposed by which method?

• A. Land filling
• B. Solvent extraction
• C. Incineration
• D. High pressure washing

Answer: (A)

Handling construction debris contaminated with hazardous waste requires isolating the contaminants from the environment in a facility designed to contain them. A properly designed hazardous waste landfill uses engineered liners and a leachate collection system to prevent any movement of contaminants into soil or groundwater, making it the appropriate final disposal path for bulky debris that cannot be effectively treated. Incineration could destroy some organic contaminants but comes with high costs, complex air-emission controls, and is not suitable for all debris streams or all contaminants. Solvent extraction is a treatment step meant to remove contaminants from waste rather than a final disposal method, leaving residuals that still need disposal. High pressure washing creates contaminated wash water and sludge, adding another waste stream to manage rather than disposing of the debris itself. So, placing the contaminated debris in a properly permitted landfill is the safest and most practical disposal option.

Handling construction debris contaminated with hazardous waste requires isolating the contaminants from the environment in a facility designed to contain them. A properly designed hazardous waste landfill uses engineered liners and a leachate collection system to prevent any movement of contaminants into soil or groundwater, making it the appropriate final disposal path for bulky debris that cannot be effectively treated.

Incineration could destroy some organic contaminants but comes with high costs, complex air-emission controls, and is not suitable for all debris streams or all contaminants. Solvent extraction is a treatment step meant to remove contaminants from waste rather than a final disposal method, leaving residuals that still need disposal. High pressure washing creates contaminated wash water and sludge, adding another waste stream to manage rather than disposing of the debris itself. So, placing the contaminated debris in a properly permitted landfill is the safest and most practical disposal option.