Donald Meals Donald W. Meals is a Senior Scientist for Tetra Tech, Inc., and has over 30 years of experience in nonpoint source pollution and watershed management. He has worked throughout the U.S. on nonpoint source issues, focusing on monitoring of watershed-scale response to management changes, especially in the areas of livestock agriculture and phosphorus. In his home State of Vermont, he designed and led several large watershed land treatment-water quality monitoring programs, including projects in the Rural Clean Water Program and the section 319 National Monitoring Program. Don has also conducted research on the water quality effects of innovative manure and livestock management, and developed watershed phosphorus modeling systems, to assess long-term watershed response to the implementation of P management measures.