Episodic generation of dangerous waste

Planned episodic events

Step 1: Plan ahead:

We must receive your request (Step 2) at least 30 days before your planned event, but 60 days is recommended to ensure the entire review process can be completed in time.

If we receive your form less than 30 days before the proposed start date, we will change your start date to meet the minimum 30-calendar day requirement. We will inform you of the revised event start date.

Step 2: Submit the required forms

Submit the following forms by mail, postmarked at least 30 days before your event: 

• Fill out and print the Episodic Addendum form.
• Include your completed pre-printed Site ID form (available through TurboWaste).
• Mail to this address: 
  HWTR Annual Reporting Team
  P.O. Box 47658
  Olympia, WA 98504

Step 3: Wait for confirmation

Wait for confirmation that your forms have been received and accepted as complete. We will contact you once your planned event paperwork has been accepted.

DO NOT proceed with a planned episodic event until you receive confirmation.

Unplanned episodic events

Step 1: Notify us within 72 hours

Email or fax your regional Ecology contact within 72 hours of your event.

Step 2: Submit required forms

Submit the following forms by mail, postmarked within 30 days of your event notification: 

• Fill out and print the Episodic Addendum form.
• Include your completed pre-printed Site ID form (available through TurboWaste).
• Mail to this address: 
  HWTR Annual Reporting Team
  P.O. Box 47658
  Olympia, WA 98504

Step 3: We will respond to you

Our Annual Reporting Team will email you to confirm all forms have been received and if there is anything further we need.

You may have one episodic event per year, whether planned or unplanned.

A second episodic event may be possible if:

1. It is an episodic event of the opposite type. For instance, if the first episodic event was planned, the second one must be unplanned, AND
2. You submit a petition and receive approval first.

Yes. Although your generator category remains the same, episodic waste still counts towards the Hazardous Waste Planning Fee and Pollution Prevention (P2) Planning.

• Learn more about filing your Dangerous Waste Annual Report.

Yes! The Statewide Environmental Incident Report Form (ERTS) does not substitute for the notifications outlined on this page or under WAC 173-303-173(3)(b) and WAC 173-303-173(4)(b).

If it's an unplanned event, contact the Hazardous Waste and Toxics Reduction Program by email or fax within 72 hours of the unplanned event.

Yes, but only if you are accumulating episodic dangerous waste in tanks. Tanks must be inspected at least once each operating day to ensure all discharge control equipment is in good working order. This includes checking:

• Waste feed cutoff systems
• Bypass systems
• Drainage systems

Daily tank inspections must also ensure the tank is operated according to its design by reviewing the data gathered from monitoring equipment such as pressure and temperature gauges from the inspection.

• Consider using the Medium Quantity Generator Tank Inspection Log to document your inspections.