The SoCalGas transmission system was initially designed to receive and redeliver gas from the east to the load centers in the Los Angeles basin, Imperial Valley, San Joaquin Valley, north coastal areas, and San Diego. As customers sought to access new supply sources in Canada and the Rockies, SoCalGas modified its system to concurrently accept deliveries from the north.

PanGIS performed a records search for cultural resources within a 1 mile radius of the pipeline.  Staff produced a GIS database of resources, maps and GPS data files for field crews and all final report maps.  Maps included 1:24,000 scale maps for site records, detailed site maps, overview maps showing whole project, and maps detailing 150 foot survey corridor.