SCH Number 2023110035

Title: Little Lake Aqueduct Crossover Project
Description: The proposed project would connect the First Los Angeles Aqueduct (LAA1) (concrete conduit) and Second Los Angeles Aqueduct (LAA2) (riveted steel pipeline) through installation of approximately 183 feet of 60-inch diameter pipe. The material to be used for the pipe is still to be determined. The LAA Crossover Project includes: • The installation of an isolation structure on the LAA1 downstream of the LAA Crossover connection. This structure will include two sets of slide gates and reinforcement of the LAA1 required for installation of the slide gates. • The installation of two 60-inch diameter butterfly valves on the Crossover pipeline to prevent back flow into the LAA1 when the LAA2 is in service. • Installation of a new crossover pipe below grade with a new mechanical platform constructed atop the replacement segment of the LAA1. • Installation of a new connection structure to allow for the connection of the LAA Crossover pipeline to the LAA1 concrete channel. • The installation of a LAA Crossover connection to LAA2 downstream of the LAA1-LAA2 intersection. • Installation of a galvanic cathodic protection system for corrosion control.

2 documents in project

Type	Lead/Public Agency	Received	Title
NOD	Los Angeles Department of Water and Power	5/16/2024	Little Lake Aqueduct Crossover Project
MND	Los Angeles Department of Water and Power	11/1/2023	Little Lake Aqueduct Crossover Project