Dennis McIntyre,  Ph.D.
Co-Manager  Columbus Operations
Senior Research Scientist
Dennis is a senior research scientist and co-manager of operations for GLEC’s Columbus, Ohio laboratory. He has over 30 years’ experience conducting water-quality related research with a focus on aquatic toxicology. Projects led by Dennis have included site-specific studies for the determination of water quality criteria; toxicity identification/reduction evaluations; development of national baseline bioaccumulation factors biological criteria in lakes; enzymatic degradation of insecticides and toxicokinetics of xenobiotic compounds in aquatic organisms; development of EPA's protocol for the assessment of bioconcentratable contaminants in effluents and fish tissue; and the fate and effects of selenium in aquatic systems. He is program manager for GLEC’s long-running engineering services contract at the U.S. Army’s Pine Bluff arsenal. Dennis holds a Ph. D. in Entomology from The Ohio State University.


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GLEC operates one of only a few U.S. laboratories accredited for whole sediment toxicity testing. GLEC also maintains NELAP accreditation for chlorophyll and nutrient chemistry testing.


GLEC's Columbus, OH laboratory is ADEQ accredited for Acute Toxicity and Chronic Toxicity testing.



Great Lakes Environmental Center

739 Hastings Street
Traverse City, MI   49686

Phone: (231) 941-2230
Fax: (231) 941-2240