Guide for Reuse, Repair, Recycling, and Safe Disposal
for Alameda County, Contra Costa County, and the City of Palo Alto

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Wood - Treated

Treated wood is wood treated with a chemical for the purpose of resisting decay. Examples include pressure-treated dimensional lumber, creosote-treated railroad ties, and telephone poles.

Household Hazardous Waste

This item should never be put in a curbside bin. For more information visit our household hazardous waste page.

Pressure treated, preserved wood, or treated wood waste (including the sawdust), referred to as TWW, has preserving chemicals like arsenic. When outdoor structures built with preservative treated wood – such as decks, gazebos, fences and retaining walls – are demolished and discarded, the wood is considered TWW.

TWWDisposal.org has fact sheets and outreach materials on the appropriate handing, disposal (lanfills that accept TWW), and other management of treated wood waste for facilities that may receive or handle treated wood waste. Spanish translation is now enabled on the website.

Painted, engineered, stained, laquered, plywood/composite, and wood painted with "copper green" may go in the garbage.

Vendors

Vendor Address City Destination Disposal Method Notes
Altamont Landfill (WM, Inc.) 10840 Altamont Pass Rd. Livermore Safe Disposal Drop-off for a Fee DTSC variance received. Call or email them asking for the Treated Wood Waste (TWW) Form and the how-to TWW email. Do leave your email for them to get back to you. Customers (anyone wanting to drop-off TWW) will need to register for a new Express account with www.WMSolutions.com, complete and attach the form, and attach a copy of your variance. Note: Residents that hire a contractor to work on their home (e.g., fence repair or deck replacement) do not require a TWW variance provided that the contractor transports the TWW for disposal. Request a price quote.
Bayview Environmental Services, Inc. 6925 San Leandro St Oakland Safe Disposal Pick-up for a Fee
Berkeley Transfer Station 1201 2nd St. Berkeley Safe Disposal Drop-off for a Fee Special Handling: Treated Wood Waste (must be kept separate from other materials and placed in a designated bin for disposal), charged at the Refuse Base Rate and the Environmental Compliance Fee.
Buttonwill Landfill (Clean Harbors) 2500 West Lokern Road Buttonwillow Safe Disposal Drop-off for a Fee
Cal Inc. 2040 Peabody Road
Suite 400
Vacaville Safe Disposal Pick-up for a Fee
Clean Harbors 1021 Berryessa Road San Jose Safe Disposal Pick-up for a Fee Commercial quantity
Conflo Services Inc. 25670 Nickel Place Hayward Safe Disposal Pick-up for a Fee
Department of Toxic Substances Control (DTSC) Berkeley Regional Office
700 Heinz Ave; Suite 200
Berkeley Safe Disposal Free Mail-in Information Link: https://dtsc.ca.gov/toxics-in-products/treated-wood-waste/
FERMA Corporation (Newark) Equipment Yard
6655 Smith Ave
Newark Safe Disposal Pick-up for a Fee
Guadalupe Landfill (Rubbish Disposal Company) 15999 Guadalupe Mines Rd San Jose Safe Disposal Drop-off for a Fee Call first for details.
Hayward Transfer Station 3458 Enterprise Ave Hayward Safe Disposal Drop-off for a Fee Call first for details.
Keller Canyon Landfill 901 Bailey Rd. Pittsburg Safe Disposal Drop-off for a Fee Closed to public.
Kettleman Hills Landfill 35251 Old Skyline Road
P.O. Box 471
Kettleman City Safe Disposal Drop-off for a Fee DTSC variance received.. Call first for details as many landfills have specific waste acceptance requirements and some require that you have a pre-approved waste profile.
Kirby Canyon Landfill 910 Coyote Creek Golf Dr. Morgan Hill Safe Disposal Drop-off for a Fee Call first for details.
MG Remediation Inc. 26062 Eden Landing Road
Suite #2
Hayward Safe Disposal Pick-up for a Fee Offers asbestos abatement services
National Response Corporation (NRC) 1605 Ferry Point Alameda Safe Disposal Pick-up for a Fee
Newby Island Landfill & Resource Recovery Park 1601 Dixon Landing Rd. Milpitas Safe Disposal Drop-off for a Fee Call first for details.
North State Environmental (South San Francisco) 220 South Spruce Avenue
Suite 200
South San Francisco Safe Disposal Pick-up for a Fee
Ox Mountain Landfill 12310 San Mateo Rd Half Moon Bay Safe Disposal Drop-off for a Fee Call first for details.
Philip Services Corp. (PSC) 395 W. Channel Rd Benicia Safe Disposal Pick-up for a Fee

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