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→How is it being used?
===How is it being used?===
===How is it being used?===
No projects have been found in Ontario to date.
*Three different types of sponges were installed in catch basins in Kearney Point NJ to reduce contaminants in stormwater runoff to the Hackensack River—Smart Sponge for hydrocarbon removal; Smart Sponge HM for heavy metal removal; and Smart Sponge BC (BioChar/EcoChar), which removes both heavy metals and hydrocarbons (Stormwater Solutions, 2019)<ref>Stormwater Solutions. 2019. Filtration Your Way: Kearny Point Industrial Park. https://www.stormwater.com/stormwater-bmps/article/21080689/filtration-your-way</ref>.
*No projects have been found in Ontario to date.
===Benefits===
===Benefits===
The Department of Civil and Environmental Engineering at Louisiana State University in partnership with the Louisiana Transportation Research Center did an investigation of the contaminant removal efficiency of different materials to reduce the discharge of various pollutants from linear transportation systems. Stormwater treatment experiments were conducted using three laboratory columns filled with different combinations of [[filter medium]] layers, and the optimum filter medium combination was found to be a mixture of Smart Sponge and Hydro CX2 (a type of fibre mulch) in the top layer, with other layers of zerolite, [[sand]], sawdust, and [[gravel]]. Results of the laboratory experiments indicate that this layer combination is able to remove 90% of total phosphorus (as well as a majority of the total suspended solids, fecal coliform bacteria and heavy metals).<ref>Deng, Z. First Flush Reactor for Stormwater Treatment for Elevated Linear Transportation Projects. Louisiana State University and Louisiana Transportation Research Center. 2009. Accessed November 2, 2017: http://www.ltrc.lsu.edu/pdf/2010/08_3tire.pdf </ref>
The Department of Civil and Environmental Engineering at Louisiana State University in partnership with the Louisiana Transportation Research Center did an investigation of the contaminant removal efficiency of different materials to reduce the discharge of various pollutants from linear transportation systems. Stormwater treatment experiments were conducted using three laboratory columns filled with different combinations of [[filter medium]] layers, and the optimum filter medium combination was found to be a mixture of Smart Sponge and Hydro CX2 (a type of fibre mulch) in the top layer, with other layers of zerolite, [[sand]], sawdust, and [[gravel]]. Results of the laboratory experiments indicate that this layer combination is able to remove 90% of total phosphorus (as well as a majority of the total suspended solids, fecal coliform bacteria and heavy metals).<ref>Deng, Z. First Flush Reactor for Stormwater Treatment for Elevated Linear Transportation Projects. Louisiana State University and Louisiana Transportation Research Center. 2009. Accessed November 2, 2017: http://www.ltrc.lsu.edu/pdf/2010/08_3tire.pdf </ref>