Abstract not available as of press time.

BIOGRAPHIES: Ian Ussery has been a geologist with the EPA Region 6 Underground Injection Control (UIC) section for the past two years. At the EPA, Ian handles numerous functions: Co-lead for Class VI permitting, permit review team member for Class VI and Class I permits, OCC state oversight, and UIC FOIA (Freedom of Information Act) coordinator. Before joining EPA, Ian spent 6 months with a geotechnical firm performing various geotechnical and environmental consulting activities right out of college. Ian obtained his master’s degree in geology at the University of Texas in Arlington while contributing as a teaching assistant for mineralogy. While also working part-time at the Shimadzu Institute for Research technologies, where he conducted his graduate research in petrogeochemistry. Ian also earned his undergraduate degree in geology at the University of Texas in Arlington, graduating summa cum laude and being an active member of the National Honor Society, Geological Society of America, and Geologic Honor Society, to which Ian was the recipient of the W. A. Tarr Award.

Brody Friesenhahn is a structural geologist with the Underground Injection Control section at EPA Region 6. Brody holds a Master’s degree from Southern Methodist University, where he researched mid-crustal syn-kinematic magma emplacement and ran the university’s X–ray Fluorescence Geochemistry lab. During his time at SMU, Brody worked as a teaching assistant for field methods, structural geology, igneous and metamorphic petrology, and mineralogy. Brody received a Bachelor of Science degree from the Jackson School of Geosciences at the University of Texas at Austin, where he conducted undergraduate research focusing on brittle deformation during the Laramide Orogeny. Prior to joining the UIC section in December 2020, Brody was an ORISE research fellow in the Wetlands section at EPA Region 6, where he focused on hydrogeologic modeling and wetland mapping. In addition to serving as one of the members of the UIC section’s Class VI leadership team, Brody is the section’s GIS lead, a Class VI permit and no migration petition reviewer, and serves as supporting staff in the region’s Groundwater Center.

Sam Yun is a geologist with EPA Region 6 Underground Injection Control (UIC) section. Sam is the state oversight manager for LDNR IMD and is a review team member for Class I petitions and Class VI permit applications. Before EPA, Sam worked as a surface data logger for Halliburton in offshore Gulf of Mexico and Permian Basin. Sam graduated with a Master’s degree in geology from the University of Louisiana at Lafayette, and a Bachelor’s degree in geology from the University of Georgia.