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Deep wastewater injection-induced seismicity has led to over a thousand Mw>3 earthquakes and four Mw>5 earthquakes in Oklahoma over the last ten years. The 3 September 2016, Mw5.8 Pawnee, Oklahoma, earthquake was the first induced seismic event worldwide, that the authors are aware of, where liquefaction was observed and documented, raising concerns regarding the liquefaction risk posed by future induced earthquakes. Determining the suitability of current variants of the simplified procedure for evaluating the regional liquefaction hazard caused by induced earthquakes is part of an ongoing study. A detailed site characterization campaign examining profiles where liquefaction was and was not observed following the 2016 Mw5.8 Pawnee, Oklahoma, earthquake is part of this study. The purpose of this paper is to present an overview of the sites targeted as part of this testing, a summary of preliminary results from the site characterization campaign, and a description of planned future testing.