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Treated Wood Waste Disposal

By Jennifer Lombari
Jan 05, 2021

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Treated Wood Waste

Due to expiring state waivers, pressure-treated wood, which is sometimes required by the California Building Code, will be classified by the State of California as hazardous material effective January 1, 2021.  Residential and business customers will have a limited ability to dispose of treated wood waste with MendoRecycle for a fee.

Beginning January 1, the State will require that treated wood waste be categorized as hazardous material (HazMat) and the material can no longer be accepted by waste haulers or at transfer stations within Mendocino County.  

MendoRecycle will be able to accept very limited quantities of treated wood waste from residential customers and businesses for a fee.  All wood waste must be no longer than 3' with nails and screws removed.

Currently, MendoRecycle doesn’t have the infrastructure to collect wood waste at our mobile collections, therefore treated wood waste disposal is currently accepted by MendoRecycle only at our main facility located at 3200 Taylor Drive in Ukiah every Wednesday and the 2nd Saturday of the month between 8 am and 2 pm. 



Residents may bring up to 125 pounds of treated wood waste material per day.  See our residential price sheet here for a complete list of limits and rates for hazardous waste disposal.   A resident that transports up to 50 lbs of TWW to a household hazardous waste collection facility is not required to obtain and EPA or California EPA ID Number or to use a hazardous waste manifest.  You may obtain your free State EPA ID at or by calling 1-800-618-6942                     


Businesses may bring up to 220 pounds of treated wood waste per month.  See our business price sheet here for a complete list of limits and rates for hazardous waste disposal.  

 All businesses must make an appointment prior to bringing waste.  Businesses may do so by calling our office at (707) 468-9710 or by going to our online scheduler.


An EPA ID is required in order to transport business Hazardous Waste. You may obtain your free State EPA ID at


Resources for Treated Wood Recycling

We will continue to update our website as the situation continues to evolve.

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Our Location

Mendocino Solid Waste Management Authority
3200 Taylor Drive, Ukiah, CA 95482