Full Scale Evaluation of Upflow™ Filter – A Catch Basin Insert for the Treatment of Stormwater at Critical Source Areas

Abstract

Stormwater runoff from critical source areas, such as pa rking lots, vehicle fueling and maintenance stations, and public works storage areas, may contain pollutant loadings of hydrocarbons, toxic trace metals, nutrients, pathogens, and/ or other toxicants and pollutants that are greater than the loadings of “normal” storm water runoff (Bannerman, et al . 1993; Pitt, et al . 1995; Claytor and Schueler 1996). One alternative to end-of - pipe treatment for stormwater runoff is to treat the more contaminated run off from problem sources before this runoff mixes with the runoff from other areas (Bannerma n, et al . 1993; Pitt, et al . 1995; Claytor and Schueler 1996). Critical source area treatment devices need to incorporate a variety of treatment processes that can be targeted fo r different classes of pollutants of concern and to respond to the variability of stormwater quality conditions that can originate from different types of critical source areas (Pitt, et al. 1999). This paper will describe one such device, the UpFlo TM Filter that has undergone development and testing under the EPA’s SBIR and ETV programs.