The Eljen GSF (Geotextile Sand Filter) is an alternative for onsite septic leach field systems. Each GSF Module is made up of a geotextile fabric and a plastic core material that work together to provide vertical surface area and oxygen transfer. The GSF System applies treated effluent to the soil, increasing the soil’s long-term acceptance rate. A Specified Sand layer provides additional filtration and prevents saturated conditions. ASTM C-33 sand is well documented and available throughout the country. It is a primary component for construction. With the expansion of civil projects across the country, the availability of ASTM C-33 sand for onsite wastewater projects is diminishing. If an alternative were available for a similar or reduced price, it would increase the use of onsite system use. The objective of this project is to continue to identify material that is readily available around the US that mimics the filtering ability of ASTM C-33 sand.

Our team collaborated with Mechanical Engineering 22 on this project.