Monitoring and Performance Analysis of the TH610 Iron-Enhanced Filtration System

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Status:  Complete
Report Date:  08/20/2020


From 2012 through 2018, researchers monitored an iron-enhanced sand filter (IESF) basin installed near Trunk Highway 610 and County Road 81 to determine how well the IESF was removing phosphorus from roadway stormwater runoff. Researchers examined the first three years of data and then continued monitoring from 2016 to 2018 after installing more measuring devices and developing a computer hydrology model to account for the filter’s inflow and outflow. They determined that if IESFs are to be monitored, then certain features need to be incorporated into the design of the pretreatment wet cell, berm and filtration basin. Methods of monitoring IESFs also need to be a part of the system’s initial design, with close attention paid to limiting uncontrolled aspects of the site. Researchers recommended many future IESF designs and protocols for monitoring to avoid erroneous information.

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