Notification of dangerous waste activity

You are required to notify us if you manage dangerous waste under the Resource Conservation and Recovery Act (RCRA) and Washington State Dangerous Waste Regulations.

What is an EPA/State ID number?

An EPA/State ID number is tied to a single geographic location, as opposed to a particular business name. You will need this number if you are a:

  • Site generating regulated amounts of dangerous waste.
  • Transporter of dangerous waste.
  • Facility that transfers, stores, treats, recycles, or disposes dangerous waste.

It is used to identify your site on things such as:

This number is used for both federal and state regulations to report dangerous waste activities. It is not a license or permit. 

How to apply for an EPA/State ID Number

First, make sure your site has no number associated with it:

If your site’s address has:

Note: EPA/State ID Numbers are not transferable to other physical locations (unless you are a transporter).

How do I notify Ecology about other waste activities?

If you decide to manage your waste under the following circumstances, you must:

  • Fill out the appropriate addendum.
  • Open your pre-printed Site ID form in TurboWaste and print it.
  • Mail these to Ecology at:
    • HWTR Annual Reporting Team
      P.O. Box 47658
      Olympia, WA 98504

If you do not have access to TurboWaste, please contact us.


Episodic generation is a planned or unplanned waste event that would normally bump your generator category to a larger category. Only medium and small quantity generators can choose to follow this rule. You may notify us of one episodic event in a calendar year (Jan. 1 – Dec. 31).

Planned episodic event

If you intend to have an episodic event, you must notify us first:

We recommend that you submit your notification a minimum of 60 days prior to the planned event proposed start date.

If we receive your form less than 30 calendar days before the proposed start date, we will change your start date to meet the minimum 30 calendar day requirement. An email will be sent to you confirming the start date.

Unplanned episodic event

Unexpected waste generation events require immediate notification:

  • Within 72 hours of the event, notify your regional HWTR office by email or fax.
  • Within 30 days of the event, fill out the addendum and mail it with your pre-printed Site ID form.

The HWTR Annual Reporting Team will email you to confirm all forms have been received and if there's anything further they need.

Second episodic event in the same calendar year

You must petition your regional office and wait for our approval before managing your dangerous waste as episodic.

If approved, you must:

  • Fill out the Episodic Addendum.
  • Mail it with your pre-printed Site ID form. 
  • Include the inspector's letter of approval.

This rule allows large quantity generators (LQGs) to receive waste from state small quantity generators (SQGs) that are under the same company, if they meet the conditions for exemption (WAC 173-303-200(15)).

To manage your state SQG waste under large quantity consolidation:

You may not begin consolidation until Ecology has approved your notification. Consolidation may begin 30 days or more after approval.

To update or add additional state SQG sites:

  • Fill out the LQG Consolidation Addendum.
  • Mail the addendum with a pre-printed Site ID form to Ecology.

Hazardous secondary material (HSM) is material that, when discarded, is identified as dangerous waste during recycling processes involving solid waste (WAC 173-303-017(7)).  A generator of HSM may apply for a variance following the procedures in the chapter.

To start managing your HSM under these requirements, you must: 

  • Contact your regional office to begin the application process.
  • Request and fill out the HSM Addendum.
  • Mail the pre-printed Site ID form and HSM Addendum form to Ecology. 

Special requirements for pharmaceutical waste

Frequently asked questions