Plan Description - City of Tustin

Chapter 2 • Plan Description
2.14 NATURAL GAS
The Southern California Gas Company (SCGC) is the jurisdictional
agency responsible for providing natural gas service to the Specific Plan
area. However, base closure law and recent utility deregulation permits
provision of gas service through the local government or through a third
party provider (not necessarily SCGC).
Presently, SCGC provides service to the site through gas lines located
along Edinger Avenue, Red Hill Avenue, Barranca Parkway, and Harvard
Avenue. SCGC maintains the feeder lines on the perimeter of the base and
provides natural gas service through master meters to military-owned gas
lines on the project site. SCGC recommends abandoning the existing
natural gas mains along the base's perimeter and providing service
connections to developments through a new backbone system constructed
in a phased manner over time.
The proposed natural gas system is shown in Figure 2-12. A utility
purveyor will be responsible for the construction and maintenance of all
new facilities. The new facilities for the project site will be developed as a
loop-piping system. The backbone pipe sizes on the site will range from
four to eight inches in diameter, and total approximately 32,000 linear
feet. Service main piping (three inches and under) is estimated at 25,000
linear feet. The proposed loop system will acquire natural gas from two
sources:
• An existing 4-inch diameter high-pressure main in Warner Avenue
through a connection north of Construction Way and Warner Avenue.
• The existing 4-inch medium-pressure line in Red Hill Avenue
through a tie-in at Valencia Avenue.
A regulator station will be required at the Warner Avenue connection to
"step down" the high-pressure gas to acceptable service levels.
MCAS Tustin Specific Plan/Reuse Plan
City of Tustin
Page 2-105