Geological Research at the IGS
Environmental feasibility of using recycled tire pieces as media in septic system absorption fields
||May 28, 2004
||Nov 27, 2007
Sally Letsinger, Greg A. Olyphant, Jack Haddan, Matt Reeder
Indiana Department of Environmental Management (IDEM)
Indiana State Department of Health (ISDH)
||The goal of Indiana's Waste Tire Management Program is to develop and advance the management of waste tires in Indiana. The Indiana Department of Environmental Management (IDEM) seeks to identify markets to use waste tires, rather than continue to send spent tires for disposal.
||The Indiana Geological Survey demonstrated the feasibility of using recycled tires as a medium for on-site septic distribution fields.
||The project involved placing hydrologic sensors and water collection devices in two septic distribution fields, and monitoring them on a continuous basis through wet and dry seasons. One distribution field used tire chips and the other used a traditional soil fill material.
||A complete report, including a literature search of related technical reports, drawings of the drainage systems to illustrate construction design, placement of the sampling equipment for wastewater and location of background water collection, was produced. The report included a description of the water-quality test parameters and an explanation of the results of laboratory analysis to determine if tire chips that were exposed to septic effluent leached metals or other contaminants at a level that exceeds federal drinking water standards. We also assessed the performance of tire chips as a suitable septic system drainage media.
||Lessons learned from this research helped regulatory personnel and system installers understand the best design and construction practices for tire chip drainage systems.