Sustainable Application of TDA in Stormwater Infiltration and Treatment Status: CompleteReport Date: 07/03/2025 Summary: Repurposing old tires as tire-derived aggregate (TDA) is a cost-effective stormwater management practice. TDA adsorbs phosphate, preventing it from reaching soil and water sources. This project analyzed the environmental and fiscal impacts of deploying TDA as a stormwater management strategy. Results of laboratory tests showed effective adsorption of phosphate and growth of biofilm on TDA, which can retain much of the zinc, copper and iron released from TDA. Fiscally, installing TDA for stormwater management rather than disposing tires in landfills can reduce the lifetime costs of the material and add value by $273 per ton. Final Deliverables: Sustainable Application of TDA in Stormwater Infiltration and Treatment (Report #2025-33) Utilizing Recycled Tires to Treat Stormwater (Research Summary) Related Materials: Using Recycled Tires to Treat Stormwater (Blog Post) Related Research: Updating MnDOT Guidance for Using Shredded Tires in Roadway Construction
