"I would like to take a few moments to express my deep appreciation for the excellent and timely laboratory reports provided by your staff..."
- W.R., California

Staff Bios

John E. Barnett (President) has over thirty years of marketing and management experience in the construction, environmental and laboratory industries. Mr. Barnett joined QuanTEM 15 years ago and through diligent focus on growth has built QuanTEM into the premier testing laboratory it is today. His successes at QuanTEM include expansion of laboratory services to include most Indoor Environmental Quality concerns, promoting training courses for the education of environmental professionals, and insisting on excellent customer service throughout the organization. His varied experience includes hazardous materials site testing, assessment, and remediation, business ownership and executive level business management.


Jeff Mlekush (Vice President) has over fourteen years of experience in asbestos, lead, industrial hygiene and indoor air quality. He joined QuanTEM in March 2000. He has a Geology degree from the University of New Mexico and a Master of Business Administration from Oklahoma Christian University. Prior to joining QuanTEM Laboratories, Mr. Mlekush was the Senior Project Manager for Acme Environmental, Inc., an environmental training and consulting firm in Albuquerque, New Mexico. He was also the Asbestos/Industrial Hygiene Manager for Assaigai Analytical Laboratories, Inc., an analytical laboratory and industrial hygiene firm in New Mexico and Texas.


Todd Jelinek (Microbiology Laboratory Manager) has over fourteen years experience. He joined QuanTEM in November 2005. He has a BS/BA in Microbiology from South Dakota State University. Prior to QuanTEM, Todd served as Head of Microbiology and Operations Manager for Analytical Research Laboratories, worked on Infectious Disease Research for Oklahoma University Health Sciences Center, was a Research Associate at Genzyme Glycobiology Research Institute, and was a business partner at Wilkins Environmental Consulting and Laboratories. Mr. Jelinek's current responsibilities for QuanTEM Laboratories, LLC as Lead microbiological analyst are daily analyses of direct examination and culture-based samples including quality control analyses. As QuanTEM's Quality Assurance Coordinator for the microbiology department, he is also responsible for all departmental QA/QC.


Benton J. Miller Benton Miller is the metals analyst for QuanTEM Laboratories’ Environmental Chemistry Department.
He has a degree from Southwestern Oklahoma State University. Benton brings over eight years of environmental metals chemistry experience to QuanTEM. As an expert in metals analysis, Benton is dedicated to providing our clients with the highest standard of service available in the industry.


Barbara Holder has been with QuanTEM since October 2004 as our Customer Relations Manager. Barbara plays an active supervisory role with all customer interactions with QuanTEM. She oversees the flow of samples coming in to the lab as well as all reports being sent to our clients. Prior to Barbara coming to QuanTEM, she was the Lab Support Coordinator for hospitals in Chicago, IL and Ft. Smith AR. She worked in QA, billing and was responsible for the overall flow and efficiency with all inner-office and external hospital communication.