Municipal Applications The entrainment and/or impingement of fish, larvae, fish egg, and other biota have been a longstanding problem in the design of intake systems for withdrawal of large quantities of water from surface water sources. As part of the Clean Water Act Section 316(b) rules, the EPA monitors and regulates "the location, design, construction and capacity of water intake structures" to require that they reflect "the best technology available for minimizing adverse enviromental impact(s)." Because of the small size of fish eggs (eg. 0.5mm) and larvae (eg. 0.34mm), the potential to ingest and destroy eggs and larvae, when large intake surface for cooling towers, water treatment plants and other industrial plants is probably the most significant issue this ruling has to deal with. In an effort to address the above issues and to develop an alternative method of intake screening/filtration that can be enviromentally effective as well as operationally acceptable, an investigation was initiated to analyze the preformance and to demonstrate the effectiveness of the Filtrex technology as a alternative approach to large scale service intake systems. Two major tests were carried out on the Filtrex system. One was done by Alden labs and the other was an actual field test carried out on the Taunton River Desalination Plant. See Attached Test Reports in the Download Section.