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
Present Land Use
Open space
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
Agency Name
South Coast Water District
Contact Types
Lead/Public Agency


Cross Streets
Bake Parkway x Lake Forest Dr
State Highways

Notice of Completion

State Review Period Start
State Review Period End
State Reviewing Agencies
California Department of Fish and Wildlife, South Coast Region 5 (CDFW), California Department of Parks and Recreation, California Department of Transportation, District 12 (DOT), California Highway Patrol, California Native American Heritage Commission (NAHC), California Regional Water Quality Control Board, Santa Ana Region 8 (RWQCB), Department of Water Resources, Office of Emergency Services, California, Resources Agency, Resources, Recycling and Recovery, Department of Toxic Substances Control
State Reviewing Agency Comments
Department of Toxic Substances Control
Development Types
Other (abandonment of existing pipeline)
Local Actions
abandon pipeline
Project Issues
Air Quality, Biological Resources, Hydrology/Water Quality, Vegetation, Wetland/Riparian, Wildfire

Disclaimer: The document was originally posted before CEQAnet had the capability to host attachments for the public. To obtain the original attachments for this document, 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.

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