The FRTR Spring 2023 General Meeting discussed recent advances in site characterization techniques and Conceptual Site Model (CSM) development. It included technical presentations with case studies highlighting how these advances are being applied to address key challenges at complex sites to improve the understanding of site conditions, identify and efficiently address data gaps, support remediation decisions, and accelerate site closure. To view this archive online or download the slides associated with this seminar, please visit https://www.clu-in.org/conf/tio/FRTRSpring2023_051623/