Tire-Derived Aggregrate Grant Program

CalRecycle oversees  tire grant programs to:

  • Divert waste tires from landfill disposal.
  • Prevent illegal tire dumping that harms the environment.
  • Promote markets for recycled-content tire products.

The Tire Derived Aggregate Civil Engineering Solution

TDA is made from shredded tires as an alternative to conventional lightweight aggregates that is:

  • Lightweight
  • Free-draining
  • Less expensive


Eligibile Applicants Include

  • All California local government entities, including cities, counties, and cities and counties.
  • Special districts, including transportation districts.
  • Joint Powers Authorities in which all JPA members are also eligible applicants.
  • Public school districts.
  • All California state agencies, including offices, departments, bureaus, and boards.
  • University of California, California State University, and California Community Colleges.
  • Private, for-profit entities.
    • Defined as a business intended to operate at a profit and return a profit to its owner(s).
    • The business must be California-based, or if in another state, must have an operational presence in California — see Application Guidelines and Instructions for complete details and restrictions.
  • Non-profit organizations, except private elementary or secondary schools, registered with the federal government under section 501(c)(3), (c)(4), (c)(6), or (c)(10) of the Internal Revenue Code.
  • Qualifying Tribal Entities.
    • A Qualifying Tribal Entity is defined as a tribe, band, nation, or other organized group or community, residing within the borders of California, which:
      • Is recognized for special programs and services provided by the United States to Indians because of the status of its members as Indians or
      • Can prove that it is a government entity and meets the criteria of the grant program.

Eligible projects include:

  • Category 1: Mechanically Stabilized TDA for retaining walls.
  • Category 2: Low Impact Development, stormwater mitigation including stormwater infiltration galleries.
  • Category 3: Lightweight film, slope stabilization, embankment fill, landslide repair, and retaining walls.
  • Category 4: Vibration mitigation under rail lines.
  • Category 5: Landfill application, aggregate replacement projects such as leachate and gas collection systems, drainage layers, and leachate injection.


  • Projects currently underway completed at the same location in the same facility within three years of application are not eligible.
  • Landfill application projects do not include use of shredded waste tires as alternative daily cover or alternative intermediate cover.


$375,000 maximum per grant award.

Eligible Costs

Eligible costs are direct costs for the TDA portion of the project only, limited to:

  • TDA material used – cost and tax
  • Transportation to an initial location, either a stockpile or project site — not including any contractor markup. Additional transportation cost from a stockpile to a project site is not eligible for reimbursement.
  • Installation of TDA.
  • Engineering/design work.
  • Geosynthetic material, fabric or geogrids, specifically needed for a TDA project.

For more information about the Tire Derived Aggregate Grant Program, contact tiregrants@calrecycle.ca.gov, 916-341-6180.

Current Grant Cycle

No open applications at this time.

Upcoming Grant Cycles

Application materials for fiscal year (FY) 2024-25 will tentatively be available summer 2024.

How to Apply

Watch for the Notice of Funds Available (NOFA) on either of these two web pages:

Online Applications

CalRecycle grant applications are submitted online through the CalRecycle Grants Management System (GMS).


Join the TDA Listserv to be notified by email for program updates and when funding becomes available.

For more information, contact tiregrants@calrecycle.ca.gov.