David Ketcheson is a Fractured Rock Hydrogeologist and Partner with Azimuth Environmental Consulting, Inc. For over 30 years David has led environmental projects in various fractured rock environments located in Ontario to address flow and contaminant transport issues. He was the Technical Manager for the Smithville Phase IV Bedrock Remediation Program and more recently has provided research and expert testimony for the licencing of four different new rock quarries in Ontario. He is an associate member of the Ontario Stone Sand and Gravel Association and works to promote scientific understanding within this industrial sector.