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Test results provided to TIREC by the Maryland Environmental Service for distribution to our current customers. Testing includes Relative
Density, Modified Leachate Compatability, Permeability, Melting Point, Flashpoint, and TCLP. Product was tested for effects on air, water and soil and was found to be well under the state and E.P.A.
limits. Based on these results, the State of Maryland has been one of TIREC’s best customers, using our recycled-tire product in several applications.
 Some examples of their installations include using our Perma-Turf product as
a 6-inch base underneath playground equipment at two state parks, as a soil amendment in a rugby field at the University of Maryland, and a leachate layer in a local Maryland landfill. Projects scheduled for
completion in 1996 include another playground application as well as a Perma-Flex Footing and soil amendment renovation project at Fairhill Equestrian Center in Fairhill, Maryland. Inquiries
regarding M.E.S. projects may be directed to Susan Schrauth or Rhody Holtzhaus by calling (410) 974-7254.
Some additional facts and figures regarding the environmental aspects of our recycled-tire product:
- Ground Tire Rubber (GTR) is a non-hazardous, filled hydrocarbon polymer and is considered to be a non-toxic, non-metalic, principally
organic, carbon based material.
- GTR is insoluble with a specific gravity of 1.09 - 1.18.
- “There are no harmful effects from the rubber. The phenolics in the rubber are only released through extremely high heat as generated by
boilers. One of the main benefits of rubber will be as an oxidizer creating aeration.” Donald Rasch, Environmental Protection Agency.
- EPA’s Compliance Monitoring Section has stated that rubber added to
the soil is not hazardous. It is “inert” and biodegradable, but won’t break down for 25 - 50 years.
- In 1990, Radian Corp. in Austin, Texas did a laboratory study for the Rubber Manufacturers Association. The study tested what compounds
are leached from cured, uncured, ground, and unground rubber products. Radian used a proposed EPA Toxic Characteristic Leaching Procedure (TCLP). The tests showed the leachate from tire samples
contained only a few metal and organic compounds. The concentrations of these metals and compounds were 1-3 times less than those in the
proposed TCLP regulations and EPA primary drinking water standards.
- In “A Report on the Use of Shredded Scrap Tires in On-site Sewage Disposal Systems”, May, 1990, prepared for the Department of
Environmental Conservation for the State of Vermont, results showed that “A review of the five leachate studies indicates that leachate from tire
shreds would not be a significant source of underground pollution and the physical characteristics of tire shreds, although different from stone, are
sufficiently alike to serve as a replacement for stone in on-site disposal systems.”
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