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Rachel Durkee Walker

Senior Environmental Scientist

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Rachel Walker manages baseline studies that inform state water-quality rulemaking. In connection with those studies, she has served on committees and collaborated with federal and state agencies, including the U.S. Environmental Protection Agency and Minnesota Pollution Control Agency. Her doctoral research focused on nutrient cycling and population dynamics of wild rice stands in northern Minnesota, where she interned with the Fond du Lac Reservation Resource Management Division and assisted with wild rice lake water-quality monitoring. Since the MPCA began requiring wild rice surveys in 2009 for facilities in northern Minnesota, Rachel has conducted, directed, and/or been involved with every study. Her work also includes reviewing and amending drafts of environmental impact statements for mining clients as well as wetland, public water, and public land permitting. Prior to joining Barr, Rachel worked in both the public and private sectors in Hong Kong, Vietnam, and China.


(952) 832-2849


ISI Envision Certification (MN)


PhD, Water Resources, University of Minnesota - Twin Cities

MA, Asian studies, Cornell University

BA, Political Science, Swarthmore College


Barr Engineering Co.
4300 MarketPointe Drive
Minneapolis, MN 55435

Phone: 952-832-2600
Fax: 952-832-2601
Toll free: 800-632-2277