Joint Transmission Main (JTM) Pipeline Abandonment Project

2 Documents in Project


SCH Number
Lead Agency
South Coast Water District
Document Title
Joint Transmission Main (JTM) Pipeline Abandonment Project
Document Type
MND - Mitigated Negative Declaration

Document Description
South Coast Water District is the contract operator for a large water main known as the Joint Transmission Main. In February 2013, the district completed a relocation of approximately 4,000 ft of the JTM transmission main into an extension of Lake Forest Drive. Approximately 4,000 ft of the original 60-in transmission main remains in a pipeline easement north of Lake Forest Dr from Romano Ave to Bake Parkway. Pursuant to right of way obligations, the district is required to complete abandonment of the 4,000 ft section of the JTM by filling the abandoned transmission main with concrete slurry or approved equivalent, remove all aboveground appurtenances, and restoring site surfaces.

Contact Information
Sara Mathis
South Coast Water District
PO Box 30205
Laguna Niguel, CA 92607-0205



Cross Streets
Bake Parkway x Lake Forest Dr
State Highways

Notice of Completion

Review Period Start
Review Period End
Development Type
Other (abandonment of existing pipeline)
Local Action
Other Action Other Action: abandon pipeline
Project Issues
Wetland/Riparian Water Quality Vegetation Forest Land/Fire Hazard Biological Resources Air Quality
Reviewing Agencies
Department of Toxic Substances Control California Department of Parks and Recreation California Highway Patrol Caltrans, District 12 Department of Fish and Wildlife, Region 5 Department of Water Resources Native American Heritage Commission Office of Emergency Services, California Regional Water Quality Control Board, Region 8 Resources Agency Resources, Recycling and Recovery
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