This workshop is the second in a series started in 2013. It will provide a forum to discuss current activities in the US that are aimed at the construction of a large liquid argon time projection chamber detector. The workshop will also feature talks from efforts outside of the US to provide a global context to LArTPC R&D. This workshop will produce a summary of the current R&D efforts and lessoned learned in the community over the past year as well as develop a list of challenges that need to be addressed by future efforts. The workshop is under the aegis of the DPF sponsored Coordinating Panel for Advanced Detectors (CPAD).