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Storage and Accumulation

Dangerous Waste may be accumulated according to the Dangerous Waste Regulations. The waste must be in Appropriate Containers and tanks, and stored correctly.

Businesses may accumulate a certain amount of waste for a certain length of time before they must apply for a permit to store dangerous wastes. Most businesses can accumulate waste on-site, the length of time depends on generator status. If you do not know your generator status, Which Rules Apply? can help you determine this.

Accumulation time begins on the date the waste was first placed in the accumulation container or tank. This is generally called the "accumulation start date." This must be on every dangerous-waste container, unless you are a small-quantity generator. Be sure to have your wastes transported to a waste-management facility before you exceed the accumulation time limit. 

If you have wastes on-site for longer than the accumulation time limit, you must obtain a dangerous-waste permit to store your wastes.

Accumulation Time Limits for Dangerous Waste

Appropriate Containers for Dangerous Waste describes container requirements and discusses container management.

Satellite Accumulation explains how to accumulate wastes near the point where you generate them.

Transport and Ship Dangerous Waste contains information on the requirements for transporting your waste.

Related information

Properly Accumulate Hazardous Waste  Ecology Publication, Step 5 of 10 from The Step-by-step fact sheet for hazardous-waste generators.

Accumulating Dangerous Waste On-site is at WAC 173-303-200(1)(a)  of the Dangerous Waste Regulations.

Special Accumulation Standards are at WAC 173-303-201(2)(a) of the Dangerous Waste Regulations.