Marvin Glotfelty, PG is co-founder and Principal Hydrogeologist with Clear Creek Associates, and has been involved with the design, installation, rehabilitation, or abandonment of over 800 water wells in the southwestern United States, during his 30-yeaer career. He received the City of Phoenix Mayor's Environmental Award in 1995 for his work with rehabilitation of municipal wells to improve their water quality, and he was the NGWA’s Distinguished McEllhiney Lecturer for 2012.