This project involved the replacement of the marine and land sections of the Town of Friday Harbor sewer system.  The marine section was installed underwater in Friday Harbor to service residences built on a rock bluff above the harbor.  This required replacing the existing cast iron siphon sewer main and sewer laterals with HDPE.  In addition to the offshore work, a new sewer lift station was installed in close proximity to the harbor to receive the sewage from the marine siphon system and newly reconstructed gravity sewer system.