West Coast Rubber Recycling processes whole scrap tires to produce tire derived aggregate (TDA), a size specific tire derived material that replaces another material used in construction such as soil, clean fill, stone and other drainage aggregates, and lightweight fill material. Civil engineers, public works directors and contractors choose tire derived aggregate for one or more of the engineering values contained in TDA and that they need for their construction project such as compressibility, vibration dampening or lighter weight. WCRR’s GroundRubber TDA is produced from 100 percent California scrap tires and meets ASTM D 6270 Standard Practice for Use of Scrap Tires in Civil Engineering.