Rock River Laboratory Experts
Expertise to serve your needs
Don Meyer
Don can be reached at: don_meyer@rockriverlab.com
Zachery Meyer
Zac can be reached at: zachery_meyer@rockriverlab.com

Dustin Sawyer, M.Sc.
Born and raised in Wisconsin, Dustin Sawyer gained a love of the outdoors, mechanics and engineering throughout his years growing up near the town of Wisconsin Rapids. In 2004, Sawyer earned his Bachelor of Science degree in Soil Science and Chemistry from the University of Wisconsin- Steven’s Point. That same year, he put his vast conservation knowledge and experience toward an internship for the Wood County Land Conservation Department, where he worked with growers on implementing preservation practices throughout their operations. Guided by a desire for continued learning and passion for science, Sawyer has earned his Master’s Degree in Soil Science through the University of Wisconsin – Madison. He continues his over 13-year tenure at Rock River Laboratory headquarters as the Laboratory Director, guiding the direction of lab analysis practices, processes, quality assurance and quality control with a detailed eye. Read More He maintains involvement in key industry groups through his memberships in the Soil Science Society of America, the American Society of Agronomy, the Crop Science Society of America, and is a board member on the Soil and Plant Analysis Council, the National Forage Testing Association, and the Illinois Soil Testing Association. Sawyer still finds time outside the lab to enjoy the outdoors that brought him to where he is today through kayaking, fishing and exploring.
Dustin can be reached at: dustin_sawyer@rockriverlab.com
John Goeser, Ph.D., PAS and Diplomate ACAN
John can be reached at: johngoeser@rockriverlab.com
Cliff Ocker
Cliff can be reached at: cliff_ocker@rockriverlab.com
Mark Kirk
Mark can be reached at: mark_kirk@rockriverlab.com

Lauren can be reached at: Lauren_Meyer@rockriverlab.com
Eva Lynch
Eva can be reached at: eva_lynch@rockriverlab.com

Doug Arterburn
Doug can be reached at: doug_arterburn@rockriverlab.com
Buffy Uglow
Buffy can be reached at: buffy_uglow@rockriverlab.com
Larry McRoberts
Larry can be reached at: larry_mcroberts@rockriverlab.com
Scott Fleming, CCA, TSP
Scott can be reached at: scott_fleming@rockriverlab.com
Matt Luther, CCA, TSP
Matt can be reached at: matt_luther@rockriverlab.com

Jen Walton, CCA, TSP
Jen can be reached at: jenwalton@rockriverlab.com
Josh Noble, CCA
Josh can be reached at: josh_noble@rockriverlab.com
Devin Sawyer
Devin can be reached at: devin_sawyer@rockriverlab.com
Chad Henke
Chad can be reached at: chad_henke@rockriverlab.com
Tabitha Kumbier
Tabitha can be reached at: tabitha_kumbier@rockriverlab.com
Jacob Karlen
Jacob can be reached at: jacob_karlen@rockriverlab.com
Kelsie Hines
Kelsie can be reached at: kelsie_brennan@rockriverlab.com
Jeff DeGroot
Jeff can be reached at: jeff_degroot@rockriverlab.com
Mary Rosiejka
Mary can be reached at: Mary_rosiejka@rockriverlab.com
Danae Cummings
Danae can be reached at: danae_cummings@rockriverlab.com
Andy Schroeder
Andy can be reached at: andy_schroeder@rockriverlab.com
Justin Kumbier
Justin can be reached at: justin_kumbier@rockriverlab.com
Gus Parkhurst

Gus can be reached at: gus_parkhurst@rockriverlab.com
Zach Sutter
Zach can be reached at: Zach_sutter@rockriverlab.com