11 through Northern Ireland. I never tire of Ireland and I just hated to leave, especially given mild August weather that we enjoyed there, in contrast to the hot, dry weather we returned to in Oklahoma. As always I am looking forward to seeing many of you when you visit. Best wishes to everyone. Dr. Todd Halihan Professor; Hydrogeophysics; Hydrogeology of Fractured and Karstic Aquifiers For Dr. Halihan, 2017 was a year of enjoying his students. Work continued with Dr. Caitlin Barnes who completed her Ph.D. with Dr. Halihan working on a systematic evaluation of the hydraulics of induced seismicity across USGS defined areas. She has been publishing that work and continuing as the program coordinator of the OSUTeach program. Rob Agnew is a professor in Fire Protection who is working on his Ph.D. with Halihan working on gas discharge from springs. He is doing amazing work at a really difficult task of quantifying gas mass discharge in these systems. These things are weird. Kyle Spears is working on a M.S. looking at the Washita River in Western Oklahoma and is quantifying a buried valley he found. Sean Hussey is determining the original potentiometric surface of the Arbuckle and learning about data management! Mr. Pickens, Cullen Pickens that is, is completing his work at quantifying mass recovery of diesel at an impacted well site. There are still a bunch of M.S. and undergrad students working on projects. Hope to send a few more out in May! On the undergraduate front, this was the last year working with the NSF REU: Helenurm and Halihan doing hydrogeophysics at the OSU Botanical Gardens on Cow Creek. This was the last year of a 3 year project with summer undergraduate students. (Research Experience for Undergraduates) students. My student this year was Kevin Helenurm who spent 10 weeks at OSU during the summer in Cow Creek. As time goes on, one of the most impressive things about being a professor at OSU is getting to work with these amazing students. Over the next year, Dr. Halihan is lecturing as the 2018 NGWA McEllhiney Lecturer. He is enjoying getting to talk to the groundwater community and spending time with alums in a range of cities. More details on the lecture are available at: http://www.ngwa.org/Foundation/mcellhi ney/Pages/default.aspx Dr Halihan’s company, Aestus, LLC (www.aestusllc.com), continues evaluate contaminated sites using OSU intellectual property developed in the lab. The company has been looking at more and more complex sites and determining the conceptual site models for these challenging sites. Work also continues with the state of Oklahoma as part of the Coordinating Council on Seismic Activity. Things are much quieter on the seismic front, and the state has a new seismologist, so Dr. Halihan is enjoying quieter times. On the home front, the Halihan home is in turmoil. Dr. Halihan’s son, Maclain, has reached his mother’s height at age 12. Martha is not pleased with the development. She is still teaching over at OSU Chemistry and enjoying about 300 undergrads per semester. She taught an online chemistry course in the fall, which was as challenging as she thought, plus some. March 2017: Dr. Halihan teaching water sampling at Lightning Lake in his backyard. Dr. Riedinger brought her students out for chemical sampling. Why do OSU Hydro profs always turn their yards into labs? Wayne Pettyjohn left Halihan this past year, so hopefully he can do a decent job in Wayne’s absence.
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