NAZIH K. SHAMMAS is a retired dean and director of the Lenox Institute of Water Technology, and advisor to Krofta Engineering Corporation, Lenox, Massachusetts. He is an environmental expert, and has been a professor and consultant for over forty years. He has experience in environmental planning; curriculum development; teaching and scholarly research; and expertise in water quality control, wastewater reclamation and reuse, physicochemical and biological treatment processes and water and wastewater systems. Dr. Shammas is the author of over 250 publications and 12 books in the field of environmental engineering. He received his BE degree from the American University of Beirut, Lebanon, MSSE from the University of North Carolina at Chapel Hill, and PhD from the University of Michigan at Ann Arbor, and was the recipient of Block Grant from the University of Michigan, First Award from the Sigma Xi Society, Commendation from ABET, and winner of the GCC Prize for Best Environmental Work. LAWRENCE K. WANG is a retired dean/director of the Lenox Institute of Water Technology and Krofta Engineering Corporation, Lenox, Massachusetts, and a retired VP of Zorex Corporation, Newtonville, New York. He has over 25 years of experience in facility design, plant construction, operation, and management. He has expertise in water supply, air pollution control, solid waste disposal, water resources, waste treatment, hazardous waste management and site remediation. Dr. Wang is the author of over 700 scientific papers and 17 books, and the inventor of 24 U.S. patents. He received his BSCE degree from National Cheng-Kung University, Taiwan, ROC, his MS degrees from both the University of Missouri at Rolla and the University of Rhode Island at Kingston, and his PhD degree from Rutgers University, New Brunswick, New Jersey, and was a recipient of the NYS Water Environment Association's Kenneth Research Award and the Pollution Engineering's Best Engineering Award.