Passive stormwater samplers for sampling highway runoff from BMPS : feasibility studies.
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2013-12-01
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Abstract:Pollution from highway stormwater runoff has been a concern within the environmental field. To reduce contamination within highway runoff, many structural Best Management Practices (BMPs) have been implemented. One challenge for BMPs is monitoring their effectiveness along with determining effluent concentrations. The objectives of this research were to develop passive samplers to monitor the pollutants in roadway runoff BMPs. Passive samplers with Amberlite IRC748 ion exchange resin as sorbent were tested for monitoring heavy metals and samplers with polyurethane foam (PUF) as sorbent were tested for polycyclic aromatic hydrocarbons (PAHs). Results from batch kinetic studies, and lab- and field-scale BMP (bioretention cell) tests indicate that the passive samplers developed can be used for monitoring BMPs under the given conditions. In order to obtain representative data for determination of removal efficiency of BMPs, the influent and effluent passive samplers must be placed in two different flow paths, and the quantity of stormwater contacting the passive samplers needs to be known.
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