If paint slops have a flash point below 140°F or contain heavy metals, they must be disposed of as hazardous waste. True or false?

• A. True
• B. False
• C. Only if stored in drums
• D. Only if pH < 7

Answer: (A)

The crucial idea is how hazardous waste is determined: waste is hazardous if it shows ignitability or contains toxic substances. A paint slop with a flash point below 140°F is considered ignitable hazardous waste, which requires special disposal. If the slop also contains heavy metals, those metals create a toxicity characteristic, making it hazardous regardless of ignition. So the statement is true because both conditions trigger hazardous waste designation.

Storage in drums or a specific pH (like being acidic or basic) aren’t the factors in this rule. pH relates to corrosivity, which is a separate hazard criterion, not the one stated here.