Select Page

Treated Wood Waste (TWW) is accepted at all Salinas Valley Recycles locations

As of March 17, 2021, Salinas Valley Recycles has received variances from the Department of Toxic Substance Control for all facilities to accept TWW for disposal.

What is Treated Wood Waste?

TWW comes from wood that has been treated with chemical preservatives. These chemicals help protect the wood from insect attack and fungal decay while it’s being used. Fence posts, sill plates, landscape timbers, pilings, guardrails, and decking, to name a few, are all examples of chemically treated wood.

Why is Treated Wood Waste Considered Toxic?

TWW contains hazardous chemicals that pose a risk to human health and the environment. Arsenic, chromium, copper, creosote, and pentachlorophenol are among the chemicals used to preserve wood and are known to be toxic or carcinogenic. Harmful exposure to these chemicals may result from touching, inhaling or ingesting TWW particulate (e.g., leaching liquids, sawdust and smoke).

Who determined that TWW is Toxic?

TWW comes from old wood that has been treated with chemical preservatives. These chemicals help protect the wood from insect attack and fungal decay while it’s being used. Fence posts, sill plates, landscape timbers, pilings, guardrails, and decking, to name a few, are all examples of chemically treated wood.

Where can I find more info about TWW?

Visit Department of Toxic Substances Control (DTSC) – Treated Wood Waste (TWW) Frequently Asked Questions Website.

Residential Customers

Salinas Valley Recycles continues to accept TWW from residential customers.

Residents of the Salinas Valley Recycles Service area can dispose of TWW at any of the three Salinas Valley Recycles disposal facilities, including the Johnson Canyon Landfill outside of Gonzales, Jolon Road Transfer Station outside of King City, and the Sun St. Transfer Station in Salinas. 

The service area includes the Cities of Salinas, Gonzales, Soledad, Greenfield, King City, and the eastern unincorporated areas of Monterey County (i.e. Aromas, Bradley, Chualar, Prunedale, Pajaro, etc.).

When I can I dispose of my Treated Wood Wastes (TWW) again?

As of March 17, 2021, Salinas Valley Recycles facilities are currently accepting Treated Wood Wastes (TWW) for disposal.

Where can I bring my TWW?

Residents of the Salinas Valley Recycles Service area can dispose of TWW at any of the three Salinas Valley Recycles disposal facilities, including the Johnson Canyon Landfill outside of Gonzales, Jolon Road Transfer Station outside of King City, and the Sun St. Transfer Station in Salinas. 

The service area includes the Cities of Salinas, Gonzales, Soledad, Greenfield, King City, and the eastern unincorporated areas of Monterey County (i.e. Aromas, Bradley, Chualar, Prunedale, Pajaro, etc.).

Is there a limit to how much TWW I can bring in for disposal?

State regulations limit the amount of TWW transported to a disposal site to 50 lbs. per trip.  If you bring in more than 50 lbs you will get a notice at the scale house describing the transportation limitations.  The Transfer Stations are not equipped to handle large quantities;  larger loads must be taken directly to the Johnson Canyon Landfill.

50lbs and under is accepted at the Jolon Road Transfer Station outside of King City, and the Sun St. Transfer Station in Salinas. Any loads larger than 50 lbs (truck full, dumpster, debris box, roll-off, etc.) need to be delivered to Johnson Canyon Landfill outside of Gonzales.  SVR is required to obtain and track information about all TWW loads that are delivered by a transporter without a DTSC variance.  State transportation regulations limit the amount of hazardous waste that can be transported without special licenses.  TWW is categorized as a hazardous waste.  A transportation variance can be obtained directly through DTSC.  All transporters who regularly bring in TWW should obtain a transporter variance from DTSC.

What happens if I bring in more than 50 lbs of TWW but I don't have a variance?

Salinas Valley Recycles (SVR) will accept the material and document transporter’s personal information for the Department of Toxic Substances Control (DTSC).  Additionally you will receive a flyer with information from DTSC at the scale house. 

DTSC requires SVR to log personal information about the generator and transporter for all loads over 50 lbs, or if the material is commercially generated.

It is not within SVR regulatory authority to enforce registration with DTSC.  Additionally, SVR encourages all generators to ensure proper disposal of hazardous material, as permitted through the DTSC variance, SVR will accept TWW from transporters who do not have a DTSC issued TWW transporter variance. 

As required by DTSC, SVR will maintain a log of all TWW loads that will be sent to DTSC monthly.  When you arrive onsite, be prepared to provide this information at the time of disposal:

  • Generators name, address, affiliation (e.g. company name), and telephone number
  • Transporters name, address, affiliation (e.g. company name), telephone number, driver license number, and vehicle license plate number (excluding trailers)
  • Weight (or estimated weight) of TWW

 

Note: Any larger loads (truck full, dumpster, debris box, roll-off, etc.) need to be delivered to Johnson Canyon Landfill outside of Gonzales. 50 lbs and under is accepted at the Jolon Road Transfer Station outside of King City, and the Sun St. Transfer Station in Salinas.

 

How can I tell the difference between TWW and old wood?

Treated wood is wood that has gone through a treatment process with chemical preservatives to protect it against pests and environmental conditions. Typically, treated wood is used in exterior applications where ground or water contact is likely.

Treated wood can often be visually distinguished by its appearance. There are several signs to look out for when determining if a piece of wood has been treated or not. What are some things to look for when determining if wood is treated or not?

  • Treated wood end tag
  • Wood manufacturer stamp codes
  • Indentations on the surface of the wood (as seen in the photo above)
  • When cut, staining is visible around the perimeter only
  • Discoloration (e.g. green or dark brown appearance)
  • Odor

Example of pressure treated wood showing indentations from treatment.

Example of pressure treated wood showing indentations from treatment.

 

Example of an end tag on treated wood:

An image of a wood tag for treated wood.

What if I am having my fence or deck that contain TWW replaced by a contractor?

The homeowner doesn’t need to do anything additional in this instance. The contractor/hauler of the material is the responsible party to ensure regulations are followed. 

I'm working on a big job, can I get someone to haul TWW away for me?

Yes, you can contact your waste hauler for options.  Additionally, Registered Hazardous Waste Transporters can be found at the Department of Toxic Substances Control. 

I am a fence contractor – do I need a variance? How do I get one of these variances?

Information regarding variances and other regulations surrounding treated wood wastes can be found at the Department of Toxic Substances Control website at https://dtsc.ca.gov/toxics-in-products/treated-wood-waste/

Does it cost the same to dispose of TWW as untreated wood waste?

TWW is charged at the garbage rate because it is buried in the landfill.  Regular lumber or clean wood is brought in at a reduced rate because it is recycled.  Please separate treated from non-treated wood wastes to receive the reduced rate.

I have more questions. Who can I talk to?

We are happy to help answer your questions.

Please call 831 775-3000 or email info@svswa.org.

Commercial Customers

Salinas Valley Recycles has resumed acceptance of TWW from commercial generators.

TWW generated in the Salinas Valley Recycles Service area can be disposed of at any of the three Salinas Valley Recycles disposal facilities, including the Johnson Canyon Landfill outside of Gonzales, Jolon Road Transfer Station outside of King City, and the Sun St. Transfer Station in Salinas. 

  • The service area includes the Cities of Salinas, Gonzales, Soledad, Greenfield, King City, and the eastern unincorporated areas of Monterey County (i.e. Aromas, Bradley, Chualar, Prunedale, Pajaro, etc.)
  • The job site/generation location needs to be within Salinas Valley Recycles service area for acceptance. 

Note: Large loads (truck full, dumpster, debris box, roll-off, etc.) need to be delivered to Johnson Canyon Landfill outside of Gonzales. 50 lbs and under is accepted at the Jolon Road Transfer Station outside of King City, and the Sun St. Transfer Station in Salinas.

When I can I dispose of my Treated Wood Wastes (TWW) again?

As of March 17, 2021, Salinas Valley Recycles facilities are currently accepting Treated Wood Wastes (TWW) for disposal.

What happens if I bring in more than 50 lbs of TWW but I don't have a variance?

Salinas Valley Recycles (SVR) will accept the material and document the transporter’s personal information for the Department of Toxic Substances Control (DTSC).  Additionally you will receive a flyer with information from DTSC at the scale house. 

DTSC requires SVR to log personal information about the generator and transporter for all loads over 50 lbs, or if the material is commercially generated.

It is not within SVR regulatory authority to enforce registration with DTSC.  Additionally, SVR encourages all generators to ensure proper disposal of hazardous material, as permitted through the DTSC variance, SVR will accept TWW from transporters who do not have a DTSC issued TWW transporter variance. 

As required by DTSC, SVR will maintain a log of all TWW loads that will be sent to DTSC monthly.  When you arrive onsite, be prepared to provide this information at the time of disposal:

  • Generators name, address, affiliation (e.g. company name), and telephone number
  • Transporters name, address, affiliation (e.g. company name), telephone number, driver license number, and vehicle license plate number (excluding trailers)
  • Weight (or estimated weight) of TWW

Note: Any larger loads (truck full, dumpster, debris box, roll-off, etc.) need to be delivered to Johnson Canyon Landfill outside of Gonzales. 50 lbs and under is accepted at the Jolon Road Transfer Station outside of King City, and the Sun St. Transfer Station in Salinas.

Where can I bring my TWW?

Residents of the Salinas Valley Recycles Service area can dispose of TWW at any of the three Salinas Valley Recycles disposal facilities, including the Johnson Canyon Landfill outside of Gonzales, Jolon Road Transfer Station outside of King City, and the Sun St. Transfer Station in Salinas. 

The service area includes the Cities of Salinas, Gonzales, Soledad, Greenfield, King City, and the eastern unincorporated areas of Monterey County (i.e. Aromas, Bradley, Chualar, Prunedale, Pajaro, etc.).

Is there a limit to how much TWW I can bring in for disposal?

State regulations limit the amount of TWW transported to a disposal stie to 50 lbs. per trip.  If you bring in more than 50 lbs you will get a notice at the scale house describing the transportation limitations.  The Transfer Stations are not equipped to handle large quantities;  larger loads must be taken directly to the Johnson Canyon Landfill.

50lbs and under is accepted at the Jolon Road Transfer Station outside of King City, and the Sun St. Transfer Station in Salinas. Any loads larger than 50 lbs (truck full, dumpster, debris box, roll-off, etc.) need to be delivered to Johnson Canyon Landfill outside of Gonzales.  SVR is required to obtain and track information about all TWW loads that are delivered by a transporter without a DTSC variance.  State transportation regulations limit the amount of hazardous waste that can be transported without special licenses.  TWW is categorized as a hazardous waste.  A transportation variance can be obtained directly through DTSC.  All transporters who regularly bring in TWW should obtain a transporter variance from DTSC.

I am a contractor who frequently disposed of TWW – do I need a variance? How do I get one of these variances?

Information regarding variances and other regulations surrounding treated wood wastes can be found at the Department of Toxic Substances Control website at https://dtsc.ca.gov/toxics-in-products/treated-wood-waste/

I'm working with the local waste hauler for all of my C&D on a project. Can they haul TWW as well?

Yes, you can contact your waste hauler for options. 

Does it cost the same to dispose of TWW as untreated wood waste?

TWW is charged at the garbage rate because it is buried in the landfill.  Regular lumber or clean wood is brought in at a reduced rate because it is recycled.  Please separate treated from non-treated wood wastes to receive the reduced rate.

My business is in Salinas Valley Recycles area but the job site isn't. Can I still bring TWW in to Johnson Canyon?

The location of the job (generation location) needs to be within Salinas Valley Recycles area to be accepted.  Please contact the waste jurisdiction of the job site to obtain information about disposal.

I have more questions. Who can assist me?

We are happy to help answer your questions.

Please call 831 775-3000 or email info@svswa.org.

Additionally you can visit the DTSC website for more details. 

Examples of Treated Wood Waste

TWW - Telephone Posts
TWW Dimensional Lumber
TWW Fence Post
Small TWW pole