BL Companies, Inc.
- Mark Koellner
Mark Koellner is an experienced environmental professional with over 25 years at BL Companies, serving as the Director of Environmental Sciences and Principal since 1998. Additionally, Mark held the position of Board Chair at Channels Food Rescue from 2006 to 2010. Mark earned a Master of Science degree in Hydrogeology from Iowa State University, where studies spanned from 1981 to 1987.
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