Treated Wood Waste

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Special Instructions

Households typically generate TWW when a fence or deck is replaced. Under AMS, households must:

  1. Keep TWW segregated from other materials/refuse.
  2. Store less than 1,000 pounds of TWW for no more than 30 days following its removal from use.
  3. Transport TWW to one of the above authorized/approved landfills. 
  4. Inform the attendant that you have TWW.

It is important to note that the AMS prohibit TWW from being burned, chipped, ground, or mulched. Any TWW stored for more than 30 days would invoke additional requirements on households that apply to businesses.

All TWW loads must be accompanied by a complete record of shipment (manifest, bill of lading, or other shipping document) that contains information required by the DTSC. The record of shipment should be completed before arriving to the landfill facility. Blank forms may be found here.

Specific generator requirements for small business and all others can be separated into two categories:

  1. Businesses generating TWW incidental to the normal course of business.
  2. Businesses generating TWW during the normal course of business.

For further information and compliance procedures for businesses, visit DTSCs TWW website using the following link:http://www.dtsc.ca.gov/PollutionPrevention/ToxicsInProducts/Treated_Wood_Waste.cfm

All TWW loads must be accompanied by a complete record of shipment (manifest, bill of lading, or other shipping document) that contains information required by the DTSC. The record of shipment should be completed before arriving to the landfill facility. Blank forms may be found here.

Disposal Locations

The following Riverside County landfills are authorized and approved to accept TWW:

  1. Badlands Sanitary Landfill
  2. Lamb Canyon Sanitary Landfill
  3. El Sobrante Sanitary Landfill

Locations & hours

Fee schedule:  Hard to handle disposal rates apply


This information above is offered as a public service in an effort to eliminate illegal and improper waste disposal. As the information may not be comprehensive, the Department encourages the public to research additional companies that are available for the services sought. The companies are not affiliated, endorsed or regulated by the Department. Accordingly, as with any professional service, please confirm the accuracy of the company’s information and request copies or verification of the company's license and/or permits to provide the service, prior to utilizing its services. Under no circumstances, directly or indirectly, shall the Department be held responsible or liable for reliance on this information.  If you would like to include your company on the list, please contact Waste-Approval@rivco.org or call (951) 486-3200.