Ohio WRC/WMAO April Luncheon Seminar

Water quality performance and methods to maintain the hydraulic function of permeable pavements
Featuring: Dr. Ryan Winston, Assistant Professor, The Ohio State University

Permeable pavement is an effective tool for improving stormwater quality when sited over soils with high infiltration rates, but its efficacy over less permeable soils is uncertain. This presentation will focus on three novel questions related to water quality performance of permeable pavements:

  1. Water quality performance when situated over heavy clay soils,
  2. Nutrient removal through denitrification during dry periods, and
  3. The effects of seasonality on water quality performance, particularly in locales with cold winters. 

To ensure long-term function, permeable pavements need maintenance to remove accumulated sediment and debris which clogs its pore space. Various maintenance methods were tested in the field, including different types of street sweepers, milling the pavement surface, vacuuming, and pressure washing, to determine what techniques best restore permeable pavement hydraulic function. Permeable pavement can significantly reduce the load of common stormwater pollutants even over heavy clay soils if engineering design accounts for seasonal influences and long-term maintenance needs. 

The event will be held on April 17th, from 11:30AM-1:00PM at The Wilma H. Schiermeier Olentangy River Wetland Research Park, 352 West Dodridge Street, Columbus, Ohio 43202.