Page 1907 - trc_centennial_deir201705

5.20 Dry Utilities

TABLE 5.20-2
SOCALGAS ESTIMATE OF CENTENNIAL’S MONTHLY NATURAL GAS DEMAND

Land Use Type Land use Size Demand Factor Usage (cf/month)
Single Family 14,600 du 6,665.0 cf/du/month 97,309,000
Multi-Family 4,800 du 4,011.5 cf/du/month 19,255,200
Commercial 4,138,200 sf 2.9 cf/sf/month 12,000,780
Employment 30,753,360 sf 2.0 cf/sf/month 61,506,720
School 6,446,880 sf 2.0 cf/sf/month 12,893,760
b
Park 7,100,280 sf 0 . 0 c f / s f / m o n t h 0
a,b
b
Commercial Recreation 3,267,000 sf 2.0 cf/sf/month 6,534,000
Open Space a,b 257,308,920 sf 0 . 0 c f / s f / m o n t h 0
Utility 8,319,960 sf 2.0 cf/sf/month 16,639,920
b
Total 226,139,380
Total (in millions) 226
SoCalGas: Southern California Gas Company; cf: cubic foot/feet; du: dwelling unit; sf: square foot/feet
a Assumes that “Park” and “Open Space” land use types would not use natural gas. While some parks may contain
scattered, small-scale, built facilities that may use natural gas and electricity, the extent of these facilities is unknown
at this time. Regardless, the level of natural gas demand from such facilities would be nominal compared to the estimate
of demand for the remainder of built land uses, which are based on conservative demand factors that do not account
for the additional energy conservation features planned for the Project. Open space also includes greenways and
landscape lots.
b To utilize the SoCalGas-provided demand factors, the number of units was derived by converting the gross acres for
each land use, except residential units, as presented in Centennial Project Statistical Table (Table 4-2 in Section 4.0,
Project Description), to square feet (1 acre = 43, 560 sf). Therefore, these numbers are greater than the actual land area
that would be covered with structures for each land use, such as school buildings.
Source of demand factors: SoCalGas 2008.

Natural Gas Distribution Line Relocation

SoCalGas’ high-pressure natural gas facilities along the westerly boundary of the Project site
may be affected by Project-related roadway improvements. Portions of the utilities within
these easements may require adjustment or relocation. As with the electrical lines, there are
approximately 29,000 feet of natural gas facilities along the SR-138 and along Gorman Post
Road.

To prevent problems with providing other utility services, ongoing coordination between
the Project Applicant/Developer and SoCalGas, as required by MM 20.3-1, would ensure that
the new facilities would accommodate the Project’s requirements. Coordination is typical
between a project applicant and a utility provider to avoid any prolonged service disruptions
during extension, relocation, and upgrade of services and facilities. This routine coordination
ensures that the nature, design, and timing of natural gas system improvements are adequate
to serve the Project. The timing for construction, as well as location and sizing, of these
facilities will be coordinated with SoCalGas.

R:\Projects\PAS\CEN\000306\Draft EIR\5.20 Dry Utilities-051117.docx 5.20-19 Centennial Project
Draft EIR