In 2009, UAF recognized their 60-year old sewer system was failing. Wood stave pipes had deteriorated, techite pipe was cracked, cast iron was severely corroded and emergency repairs were needed on a regular basis. PDC prepared a Campus-wide Sewer Assessment to analyze the condition and prioritize needed improvements. These improvements have included relining, replacement, and even complete rerouting in some cases. UAF has made a commitment to stick to the plan and as a result, about 85% of the entire campus sewer system is stable and mission-ready for the next 50 years.