Dan is a registered engineer and geologist with expertise in groundwater engineering and environmental chemistry. He is semi-retired, working on-call as a Principal Emeritus and consultant with Sanborn Head & Associates, Inc., a 100-person geo-environmental consulting firm serving clients on projects across the U.S. and worldwide. A lifelong advocate of human-powered travel, Dan has paddled much of the Maine coast from Kittery to Cobscook Bay, logging between 200 and 500 miles a year in a kayak along with similar miles biking, canoeing, cross-country skiing, and kayak surfing. He and his wife, Pam, an organic gardener and herbalist, live in Dayton, Maine along with barn cats, chickens, and Chocolate the horse. In gratitude they annually give to MITA in the proportion to human-powered miles and trail nights.