What is the maximum allowable time hazardous waste can be accumulated on site for small quantity generators without a RCRA permit?

For small quantity generators of hazardous waste, the maximum allowable time for accumulating waste on-site without a Resource Conservation and Recovery Act (RCRA) permit is indeed 180 days. This rule is designed to provide flexibility for businesses that produce smaller amounts of hazardous waste, allowing them to safely manage and accumulate their hazardous waste without the immediate need for a permit, provided they are compliant with other regulatory requirements.

The 180-day accumulation period recognizes that small quantity generators may not have the infrastructure or resources to handle waste disposal as quickly as larger generators. By allowing a longer time frame, regulations facilitate a balance between environmental protection and operational efficiency for these generators.

Other accumulation time frames do exist for different categories of waste generators, which is likely the source of confusion with other options. However, the specific provision for small quantity generators is 180 days, making this the correct answer to the question.