Pipeline Safety Enhancement Plan | Southern and Central California



Sempra Utilities


Photogrammetric Mapping
Pipeline Design Mapping

Ensuring the Integrity of Gas Pipelines

In order to ensure the integrity of their gas pipelines, Sempra Utilities developed a Pipeline Safety Enhancement Plan (PSEP) for their 24,000 square mile service territory. The project includes pressure testing over 360 miles of existing pipeline, replacing 294 miles of the 3,750 mile system, and upgrading or replacing 224 main line valves throughout the 24,000 square mile service territory.

Psomas is providing surveying and mapping services with staff embedded with the Sempra-Jacobs project team and five Psomas offices currently supporting pipeline projects from Santa Barbara to San Diego.

The project is divided into two phases. Phase I is a 10-year, $2.5 billion project that includes both higher priority pipelines as well as older pipelines installed before 1946. Phase II covers the remaining pipeline segments in Southern California Gas and San Diego Gas & Electric territories.