Innovative Practices for Greener Roads - IRF | International Road ...

Keeping Run-Off PollutantsOut of Long Island SoundSince 1968, Transpo Industries of NewRochelle, NY, has manufactured andsupplied "smart solutions" products forbridges, roads, tunnels, railroad crossingsand airport runways. Their safetyproducts and polymer concrete materialsare widely recognised for quality andperformance. As a long time provider ofroad surface products, the company hasrealised another growing demand -controlling storm water run-off.Unchecked growth of impervious surfacesis contributing to exponential increases inrun-off volumes and pollutant loadings.Long Island Sound is an estuary where saltwater from the Atlantic mixes withfresh water from New York and Connecticut rivers. The Sound is 110 miles longand up to 21 miles wide, and located in one of the most densely populatedregions of the US, with 10 percent of the nation's population living within 50miles of its shores. Increasing development in the region has resulted in extensivehabitat degradation. Funded by a USD 35,000 grant from the National Fish andWildlife Foundation, 45 Transpo's EnviroSafe Modular Catch Basin FiltrationSystems were fitted into storm drains at Veterans Memorial Park in Norwalk CT.EnviroSafe can be retrofitted to fit flat-grated, combination curb-grated catchbasins as well as curb only inlets. Comprised of a basin housing a filter cartridge,the unit is mounted at the grate (the point of entry). The large basin traps debris,while inside the cartridge, the modular construction includes open cell foam thatis treated with an antimicrobial shield. In addition to filtering sediment this foamis highly effective against microorganisms like bacteria, fungus, and mold. Thesubsequent layers incorporate coagulant-based and ion-exchange processes forfiltering hydrocarbons, oils, grease and heavy metals like cadmium, lead, copperand zinc.www.transpo.comInternational Road Federation Innovative Practices for Greener Roads Back to Table of Contents I 47