Preservative treated wood can be used in a variety of building applications including interior, exterior, above ground, ground contact, marine, and fire retardant. Voluntary wood preservation standards are developed by the American Wood Protection Association (AWPA), a non-profit organization founded in 1904. AWPA Standards are written to safely and effectively extend the service life of preservative treated wood and are universally specified for wood preservation in the United States. AWPA Standards are also recognized worldwide.
Treated Wood Waste (TWW) in California
On January 1, 2021 a California law, which allowed treated wood waste to be brought to a composite-lined portion of a solid waste landfill, expired. The only option at the time was to transport treated wood waste to hazardous waste landfills which are only located in remote areas of the state. This caused widespread confusion and concern about the use of treated wood. A temporary fix was created whereby a variance could be obtained from the California Department of Toxic Substances Control (DTSC) to store, transport, and dispose of treated wood waste at a solid waste landfill.
On August 31, 2021, Assembly Bill 332 was signed by Governor Newsom reinstating the ability of treated wood waste producers to bring this waste to a solid waste landfill, a permanent fix. The bill takes effect immediately. It also reinstated regulations regarding the appropriate handling, storage, and transportation of treated wood waste that were in place prior to January 1, 2021 and found in the issued variances. All variances issued by DTSC are now inoperative as they have been replaced by this bill. There is no expiration for the language in the bill.
Please visit the DTSC website for the most current information relative to treated wood waste in California. The language in AB 332, including how to handle, transport, and dispose of treated wood waste, can be found here: https://leginfo.legislature.ca.gov/faces/billTextClient.xhtml?bill_id=202120220AB332
An informational flyer has also been created for vendors, customers, contractors, and other interested parties that manufacture, distribute, purchase, or use treated wood.
Educational Webinar Series
Allweather Wood offers an educational webinar series to help dealers, distributors, specifiers, and other users of preservative-treated wood understand how the products are manufactured and used. If you have any questions about the content of these webinars or other questions about our business or products, please Contact Us. Note: it is best to view the webinars below in full-screen mode.
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