Sanitation Districts of Los Angeles County Clearwater Program—Joint Water Pollution Control Plant Effluent Outfall Tunnel

摘要

In November 2012, the Sanitation Districts of Los Angeles County finalized a comprehensivernMaster Facilities Plan (MFP) for its Clearwater Program. One of the recommendations in the MFP was tornconstruct a new Effluent Outfall Tunnel to provide sufficient capacity and redundancy for existing 8- and 12-rnfoot diameter tunnels built in 1937 and 1958, respectively. The project will involve building a new 7-mile long,rn18-foot internal diameter tunnel from the Districts’ Joint Water Pollution Control Plant to a manifold structurernat Royal Palms Beach. Connections to an existing, active 14-foot diameter force main and four existing oceanrnoutfalls ranging from 5 to 10-foot diameter are required. This paper will discuss preliminary details of therntunnel final design phase and anticipated geological features for the tunnel alignment.