Francis J. Hopcroft has been teaching civil and environmental engineering at Wentworth Institute of Technology in Boston, MA, since January, 1994. He has written several books on various topics such as hazardous waste management, wastewater treatment, and engineering economics. He has served as the Collection Editor for the Environmental Engineering Collection at Momentum Press since 2013 and has published or reviewed dozens of professional papers, articles, and presentations. Marcos DoCanto is a civil engineering graduate from Wentworth Institute of Technology who studied under Prof. Hopcroft. Mr. DoCanto is a native of Brazil and grew up speaking several languages, including the Spanish language. He was hand-picked and selected by Prof. Hopcroft to assist with the Spanish translations due to his exceptional engineering and language skills.