What is the maximum time hazardous waste can be stored?

• A. 60 days
• B. 90 days
• C. 120 days
• D. 180 days

Answer: (B)

Hazardous waste accumulation time is limited to reduce risk from storage. For a Large Quantity Generator, the maximum time hazardous waste can be stored on-site before it must be shipped off for treatment or disposal is 90 days. The clock starts when the first hazardous waste is placed into accumulation and continues until it’s moved off-site. This 90-day limit helps ensure waste is managed promptly and reduces the chance of leaks or exposures.

Note that other generator types can have longer accumulation times (for example, Small Quantity Generators and Very Small Quantity Generators have up to 180 days, with possible extensions to 270 days in certain distance scenarios), but the standard maximum for the scenario in this question is 90 days.