Ronald (R.T.) Krueger has served as President of Northern Lake Service, Inc (NLS) since 2000.  Prior to that, he served as laboratory technician, field hand, groundwater monitoring crew chief, resident limnologist, and laboratory manager.  NLS has was started by R.T.’s father in 1974 and has grown into one of the most highly accredited environmental compliance laboratories in the Midwest, serving more than half of the municipalities in Wisconsin, all eleven of the Federally-recognized tribes and numerous private businesses. The laboratory holds certification for many highly-specialized methods, including PFAS, that are available from few private-sector laboratories. 

R.T. has served as the President of the Wisconsin Environmental Laboratory Association and on the Wisconsin NR149 Revision Advisory Committee. He holds a Bachelor of Science Degree in Biology and Earth Sciences from UWSP.