Dr. Swallow is a Principle and founder of Pine & Swallow Environmental. His professional practice spans four decades and has emphasized service in areas of soil science, analysis of environmental conditions for plant growth, and site rehabilitation. His projects range from initial site investigations to detailed design of soil-water-horticultural systems, construction specifications and construction observation. He has served on the Sustainable Sites Initiative (SITES) Technical Core and Soils Committees for many years. His worldwide built-projects range from new embassies in war zones to campus projects to farms on remote islands to mega parks on urban islands and lots in between.