Tire-Derived Aggregate Grant

Return to Search Tire-Derived Aggregate Grant Grantor: Department of Resources Recycling and Recovery Portal ID: 152256 Status: Closed Opportunity Type: Grant Last Updated: October 22, 2025, 11:29 am Categories: Environment & Water Details Purpose: This competitive tire grant program provides opportunities to divert waste tires from landfills, prevent illegal tire dumping, and promote markets for recycled-content tire products. The Program provides assistance to civil engineers in solving a variety of engineering challenges using Tire-Derived Aggregate (TDA), which is produced from shredded tires, is lightweight, free-draining, and a less expensive alternative to conventional aggregates. Description: Eligible Projects: Projects generally fall into one of five categories (see TDA Uses for more complete descriptions): Category 1: Mechanically Stabilized TDA (retaining walls). Category 2: Low Impact Development (storm water mitigation including storm water infiltration galleries). Category 3: Lightweight fill (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, leachate injection). All projects are subject to the following requirements: • Only California-generated waste tires that are processed in California shall be used in the TDA portion of the project(s). • The project(s) must be located in California. • A combined minimum of 500 tons of TDA must be used in the project(s), except for Low Impact Development projects, which must use a minimum of 200 tons of TDA in the project(s). • Plans and specifications must be reviewed by CalRecycle staff and/or its contractor(s) prior to commencement of work. The project design plans must be uploaded in GMS at a minimum 50 percent complete during application submittal and 100 percent design prior to the start of the project. T