Associate Principal, David (Dave) Coleman, has over 38 years of experience with water and wastewater facility engineering with a focus on wastewater treatment, hydraulics and sanitary sewer system infiltration and inflow investigation and abatement. Not only is he a registered professional engineer in California, he holds a license in Pennsylvania, Virginia, Washington, and the territory of Guam. Dave graduated from Penn State with a Bachelor’s in Environmental Engineering and has a degree in Physics from the California University of Pennsylvania. Dave’s personal interests include flat-water and whitewater canoeing, alpine and Nordic skiing, hiking, conservation activism and unending home improvement. Dave helps organize the annual Russian River Watershed Cleanup.