This document summarizes a study on monitoring a novel highway runoff treatment system. Laboratory column tests showed that certain materials like BOF slag and goethite soil can remove over 30% of heavy metals from runoff. A field facility was set up to test these materials' performance on capturing and treating runoff. Preliminary field results showed the system could intercept over 260,000L of runoff and melt water from storms. Water quality monitoring of the underdrains is ongoing to assess pollutant removal rates under real-world conditions. Further testing is still needed to better understand the system's adsorption properties and ability to attenuate peak runoff flows.
7. 7
5M tonnes of road salt applied annually in
Canada (EC, 2007)
1.1M tonnes in Ontario alone (1998)
Number is roughly double that in the U.S.
Private contractors tend to apply salt at a
density that is 4X greater than public
agencies
Application excess is
in response to liability issues
Total contribution
remains unquantified
26. Field Facility – Objective 2
Upscaling from the Laboratory to the Field
Peak dampening from diffusion, storage & adsorption
Testing of Various Liners
Sub‐surface Leak Detection
26