Ignitability in hazardous waste is defined by which regulatory provision?

Ignitability in hazardous waste is defined by which regulatory provision?

• A. 40 CFR 261.22
• B. 40 CFR 261.21
• C. 40 CFR 261.23
• D. 40 CFR 261.24

Answer: (B)

Ignitability as a hazardous waste characteristic is defined by 40 CFR 261.21. This provision establishes that a waste is ignitable if it has a flash point below 60°C (140°F), determined by standard flash-point test methods. This criterion identifies fire hazards in waste, triggering hazardous waste management requirements for storage, handling, and disposal. The other characteristics—corrosivity, reactivity, and toxicity—are governed by their own provisions, so ignitability is distinguished from those other properties by this specific regulation.

Ignitability as a hazardous waste characteristic is defined by 40 CFR 261.21. This provision establishes that a waste is ignitable if it has a flash point below 60°C (140°F), determined by standard flash-point test methods. This criterion identifies fire hazards in waste, triggering hazardous waste management requirements for storage, handling, and disposal. The other characteristics—corrosivity, reactivity, and toxicity—are governed by their own provisions, so ignitability is distinguished from those other properties by this specific regulation.