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Guidebook For Using
Tire Shreds In Landfills

GeoSyntec Consultants,Inc., Walnut Creek, CA has completed five guidance manuals on using scrap tire shreds in municipal solid waste (MSW) landfill applications. Publication of the manuals concludes a two-year project funded by the California Integrated Waste Mangement Board which focused on the use of tire shreds as alternative daily cover material; leachate drainage material; final cover foundation layer; protective layer material and as landfill gas collection layer material. The manuals summarize regulations relevant to the application engineering characteristics of tire shreds; performance criteria for using tire shreds in these applications; tire shred specifications; and step-by-step guidelines for using tire shreds in appropriate layers at MSW landfills.

As part of the study, GeoSyntec constructed two field-scale test pads at the Vasco Road Sanitary Landfill in Livermore, CA which simulated landfill composite liner system and final cover system layers. Granular soil materials were substituted with scrap tire shreds. GeoSyntec's report describes the test pad program, its construction parameters, tire shred specifications, field observations, and field and laboratory testing. Highlights of the test pad program include evaluations on the ability of tire shreds to support traffic; the suitability of tire shreds for being handled and graded using conventional earth moving equipment; the compatibility of tire shreds with other geosynthetic and soil liner or cover system components; and the suitability of tire shreds for construction of overlying low-permeability liners.

For more information, contact Krzysztof S. Jesionek, GeoSyntec Consultants
(925) 943-3034; fax (925) 943-2366.

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