Companies

     Portable Groundwater Monitoring - http://www.heroninstruments.com
     Environmental Measurement Products - http://www.nexsens.com
     Meteorological Instrumentation - http://www.vaisala.com
     Water Quality Sensors - http://www.ysi.com
     Portable Groundwater Monitoring - http://www.heroninstruments.com
     The Nielsen Environmental Field School - http://www.envirofieldschool.com

Government Agency

     USACE - http://www.usace.army.mil

University & Colleges

     University of Dayton - http://www.udayton.edu

Environmental Organizations

     The Ohio Lake Management Society - http://www.olms.org