De Soto Trunk Line Project

3 Documents in Project


SCH Number
Lead Agency
Los Angeles Department of Water and Power
Document Title
De Soto Trunk Line Project
Document Type
MND - Mitigated Negative Declaration
Present Land Use
Properties along the proposed project alignment: Agricultural, Residential Estate, Parking, Commercial, Multiple Family Residential, Industrial, Open Space, Warner Center Specific Plan

Document Description
The proposed project would replace a portion of the existing De Soto Trunk Line and Roscoe Trunk Line. The replacement trunk lines would extend along Devonshire Street from De Soto Avenue to Mason Avenue (0.5 miles), along Mason Avenue from Devonshire Street to Roscoe Boulevard (2.6 miles), and along Roscoe Boulevard from Mason Avenue to De Soto Avenue (0.5 miles). The project would also involve trunk line replacements at the intersection of De Soto Avenue and Victory Boulevard (totaling 900 feet). 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. The project would increase the safety, capacity, and reliability of the City of Los Angeles potable water supply in the western San Fernando Valley area.

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

Phone : (213) 367-3509

Los Angeles Department of Water and Power
Project Applicant


34°14'21"N 118°34'47"W
Los Angeles
Los Angeles
Cross Streets
Numerous (De Soto Ave & Devonshire St; Mason Ave & Devonshire St; Mason Ave & Roscoe Blvd; etc
Total Acres
State Highways
SR-118; SR-27
Union Pacific Railroad
Browns Canyon Wash; Kelvin Channel; Limekiln Canyon Wash; Santa Susana Pass Wash; LA River
2N; 1N

Notice of Completion

Review Period Start
Review Period End
Development Type
Water Facilities (Potable Water Pipeline)(Type Potable W.P.)
Local Action
Project Issues
Aesthetics Agriculture and Forestry Resources Air Quality Biological Resources Cultural Resources Cumulative Effects Drainage/Absorption Flood Plain/Flooding Geology/Soils Growth Inducement Hazards & Hazardous Materials Hydrology/Water Quality Land Use/Planning Mineral Resources Noise Population/Housing Public Services Recreation Schools/Universities Septic System Sewer Capacity Solid Waste Transportation Vegetation Wetland/Riparian Wildfire
Reviewing Agencies
California Air Resources Board (ARB) California Baldwin Hills Conservancy (BHC) California Coastal Commission (CCC) California Department of Conservation (DOC) California Department of Fish and Wildlife, South Coast Region 5 (CDFW) California Department of Parks and Recreation California Department of Water Resources (DWR) California Highway Patrol (CHP) California Native American Heritage Commission (NAHC) California Natural Resources Agency California Public Utilities Commission (CPUC) California Regional Water Quality Control Board, Los Angeles Region 4 (RWQCB) California State Lands Commission (SLC) Department of Toxic Substances Control Office of Historic Preservation State Water Resources Control Board, Division of Drinking Water State Water Resources Control Board, Division of Drinking Water, District 22 State Water Resources Control Board, Division of Water Quality State Water Resources Control Board, Division of Water Rights State Water Resources Control Board, Divison of Financial Assistance California Department of Transportation, District 7 (DOT)


Environmental Document
De Soto Trunk Line NOI   PDF 150 K De Soto Trunk Line OPR Summary Form   PDF 586 K De Soto Trunk Line Project IS-MND   PDF 12585 K De Soto Trunk Line Project IS-MND Appendices   PDF 63027 K
De Soto Trunk Line NOC   PDF 200 K
State Comments
2018111045_Caltrans Comment   PDF 233 K

Disclaimer: The Governor’s Office of Planning and Research (OPR) accepts no responsibility for the content or accessibility of these documents. To obtain an attachment in a different format, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at or via phone at (916) 445-0613. For more information, please visit OPR’s Accessibility Site.

Download CSV Download All Attachments New Search Print