Georg accompanied me on our final EVA-25 which finished the sampling for the forward contamination study. The EVA went off without a hitch and we were finished by 12:30. We sampled in roughly a 3km radius around the Hab today to the west, north and south, having sampled to the east during yesterday's EVA. This morning's activity was a way for me to say goodbye to the surrounding area and put a wrapping around my projects. With the end of this EVA, I have completed all of my mission objectives and learned a great deal about the geology about the Hab west to Factory Butte, east to the cliffs above Muddy Creek, north to Coal Mine Wash and south to the highway.