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Swenson, Hagen & Co. and its staff are affiliated:

  • American Congress on Surveying and Mapping
  • American Institute of Certified Hydrologists
  • American Institute of Certified Planners
  • American Planning Association
  • American Society of Highway Engineers
  • American Society of Landscape Architects
  • American Water Works Association
  • Association of General Contractors
  • Bismarck Forestry Advisory Board
  • Bismarck-Mandan Board of Realtors
  • Bismarck-Mandan Chamber of Commerce
  • Bismarck-Mandan Development Association
  • Bismarck-Mandan Home Builders Association
  • National Arbor Association
  • National Home Builders Association
  • National Society of Professional Engineers
  • North Dakota Planning Association
  • North Dakota Society of Professional Engineers
  • North Dakota Society of Professional Land Surveyors
  • North Dakota Water Pollution Control Association
  • North Dakota Water Users Association
  • Urban Land Institute and the Water Environment Federation
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