This Design-Build project involved the complete rehabilitation of two hotel buildings’ plumbing and mechanical systems. The deteriorating drain-waste-vent system had caused several rooms to be water damaged, which Orion repaired as well. The hotel was in active use, requiring work be completed in phases. This project extensively utilized cured-in-place epoxy liners to rehabilitate inaccessible piping that was intertwined within the buildings’ structural grade beams. To line the pipes, Orion accessed them through excavations outside the buildings or mechanical chases. The fixtures within the buildings were similarly removed and later replaced so pipes could be re-lined.