Large Quantity Generators generate 1,000 kilograms per month or more of hazardous waste, or more than 1 kilogram per month of acutely hazardous waste. Requirements for Large Generators include:

• May only accumulate waste on site for 90 days.
• Do not have a limit on the amount of hazardous waste accumulated on site.
• Must always be at least one employee available to respond to an emergency. This employee is the emergency coordinator responsible for coordinating all emergency response measures. Must have detailed, written contingency plans for handling emergencies.
• Must submit a biennial hazardous waste report.

Small Quantity Generators generate more than 100 kilograms, but less than 1,000 kilograms, of hazardous waste per month. Requirements include:

• May accumulate hazardous waste on site for 180 days without a permit.
• Quantity of hazardous on site waste must never exceed 6,000 kilograms.
• Must always be at least one employee available to respond to an emergency. This employee is the emergency coordinator responsible for coordinating all emergency response measures. Not required to have detailed, written contingency plans.