About the Author
Frank R. Spellman
is an assistant professor of Environmental Health at Old Dominion University Norfolk, Virginia. He has extensive experience in environmental science and engineering, in both the military and the civilian communities. A professional member of the American Society of Safety Engineers, Water Environment Federation, and the Institute of Hazardous Materials Managers, Frank Spellman is a Certified Safety Professional and a Certified Hazardous Materials Manager.Nancy E. Whiting
is a freelance technical writer in water/wastewater issues, environmental science, and education.