As the most developed state in the U.S., Iowa has non-point contribution from industrial agriculture, urban areas, and construction, leaving more than 75% of the state's waterbodies impaired or partially impaired. To accommodate the rapid growth and development within the state, the Department of Transportation (DOT) has many highway expansion projects. The DOT strives to protect water quality downstream of their construction projects and implement effective erosion and sediment control (E&SC) practices. This presentation will focus on the treatment efficiency of several commonly used E&SC practices using field collected data from the Tama U.S. 30 expansion site. Data includes water quality analysis and LiDAR scanning to assess the sedimentation capabilities of structural practices.
Identify commonly used in-field erosion and sediment control (E&SC) practices and their modes of failure.
Apply implementable improvements in design and field installation to structural E&SC practices.
Assess treatment efficiencies of standard and modified E&SC practice installations.