De Soto Trunk Line Replacement Project


SCH Number
Lead Agency
Los Angeles Department of Water and Power
Document Title
De Soto Trunk Line Replacement Project
Document Type
MND - Mitigated Negative Declaration

Document Description
Note: Review Per Lead LADWP proposes to implement the De Soto Trunk Line Replacement Project to increase the safety, capacity, and reliability of the city of Los Angeles potable water supply in the western San Fernando Valley area. The proposed project would replace portions of the existing De Soto Trunk Line, Roscoe Trunk Line, Canoga Topham Trunk Line, and Ventura Trunk Line that are aging, deteriorating, and nearing the end of their service life. The existing pipelines range from 30 in to 52 in in diameter and will be replaced with 54-in and 42-in diameter welded steel pipe. The proposed project would also include installation of maintenance/access holes, isolation valves, blow-offs, air/vacuum valves, and flowmeters that are required for the operation, monitoring, and maintenance of the trunk lines.

Contact Information
Christopher Lopez
Los Angeles Department of Water and Power
111 North Hope Street, Room 1044
Los Angeles, CA 90012

213 367 3509


34°15'19.23"N 118°35'18.79"W
Los Angeles, City of Los Angeles
Los Angeles
Cross Streets
De Soto Ave, Lemarsh St
State Highways
SR 118
Sierra Pacific School, Chatsworth HS, Stoney Point Ernest Lawren
Browns Canyon Wash
Other Location Info
Other Information
Aggeler Community Day School, Pierce College

Notice of Completion

Review Period Start
Review Period End
Development Type
Water Facilities (pipeline Type)
Project Issues
Cumulative Effects Landuse Wetland/Riparian Water Supply Water Quality Vegetation Traffic/Circulation Toxic/Hazardous Solid Waste Soil Erosion/Compaction/Grading Sewer Capacity Schools/Universities Recreation/Parks Public Services Population/Housing Balance Noise Minerals Geologic/Seismic Forest Land/Fire Hazard Flood Plain/Flooding Drainage/Absorption Biological Resources Archaeologic-Historic Air Quality Agricultural Land Aesthetic/Visual
Reviewing Agencies
Caltrans, District 7 Air Resources Board, Transportation Projects California Department of Parks and Recreation California Highway Patrol California Public Utilities Commission Department of Fish and Wildlife, Region 5 Department of Water Resources Native American Heritage Commission Regional Water Quality Control Board, Region 4 Resources Agency State Water Resources Control Board, Division of Water Quality State Water Resources Control Board, Divison of Financial Assistance
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