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Sam B. Upchurch, PhD, PG, is a karst geoscientist with expertise in hydrogeology, geochemistry, statistics, and carbonate sedimentology. Upchurch worked for the Tennessee Division of Geology and the US Army Corps of Engineers Great Lakes Research Center. He taught at Michigan State University and the University of South Florida, where he was Professor and Department Chairman.


His technical experience includes modeling geochemical processes in injectate, using geophysical methods to track injectate plumes and subsurface aquifer storage and recovery (ASR) bubbles, studying the relationship of ASR storage and recovery to sinkhole formation, providing expert testimony, and the effects of subsurface strata permeability and porosity.


Upchurch served on the Technical Review Committee for the Evaluation of Pathogen Transport in Karst Flow Zones of the Biscayne Aquifer in Miami-Dade County, as geochemist for the Comprehensive Everglades Restoration Plan-Aquifer Storage and Recovery Program Technical Review Committee for the Army Corps of Engineers, and on the Peer Review Panel for Northern Lake Okeechobee ASR project.


Upchurch is a Senior Fellow of the Geological Society of America and is senior author of Karst Systems of Florida. Upchurch is licensed to practice in Florida and Tennessee; he has a BA in Geology from Vanderbilt University and MS and PhD degrees from Northwestern University.

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