Mark Katterjohn is a Vice President and Hydrogeologist with RPS Group, Inc., an environmental consulting firm with 170 people in North America with more than 5000 people across Europe, North America, and the Australia Asia Pacific regions. Mark has over 36 years of experience in environmental hydrogeology, geophysics, and chemistry. He has worked for technical and environmental consulting firms and state agencies, gaining multi-faceted experience in groundwater sub surface geology, water resource evaluations, due diligence and litigation. Mark has specialized in the investigation and remediation of soil and groundwater contamination and is currently managing the Southwest Region of the Site Investigation and Remediation Group. Mark is married to a Westlake High School mathematics teacher, has 4 children, and has lived in Austin since 1979.

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