Eastern State Hospital’s waste line infrastructure often backed up resulting in overflowing floor drains even after the maintenance staff rooted the lines multiple times. It was unclear why the large waste lines wouldn’t flow faster. The project identified the root cause as decades of sediment build up in horizontal and vertical pipes as well as undersized drains and vent pipes. The Laundry Waste Lines Replacement project replaced the waste line & vent pipes on four floors across several wards and brought the waste line infrastructure up to current code. The project expanded the laundry facilities by adding several washer & dryer units to keep up with growing demand. The project was phased and tightly coordinated with the DSHS to maintain continuity of operations. CEG performed the plumbing and electrical engineering services as well as construction administration.