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7.2.6 Vgrdugg-Egglg Rogk Fgglt

The Verdugo-Eagle Rock fault is located near the southwestern base of the Verdugo
Mountains and San Rafael Hills (Weber, 1980). The fault is delineated by southwest-facing
scarps in Holocene-age alluvial deposits, subsurface faults exposed in gravel pits, and
apparent gravity and groundwater anomalies (Weber, 1980), and extends for at least

1211 miles (20 km). Historic seisrnicity is not known to be associated with the fault, and the
late Quaternary slip rate is unknown. The fault is located approximately 7 miles (11 km)
southeast of the project property. A slip rate of 1 mm/yr was assumed for assessing seismic
potential of the Verdugo-Eagle Rock fault.

7.2.7 hri il F l

The Northridge Hills fault is inferred to extend southeast approximately 91; miles (15 km)
from its intersection with the Simi fault in the northwest comer of the San Fernando Valley.
Structural relationships at this intersection strongly indicate that these two faults are
separate structures (Weber, 1980). This north-dipping reverse fault displaces late
Pleistocene, and possibly Holocene-age alluvium. The fault is delineated by physiographic

features and subsurface groundwater barriers. Some aftershocks of the 1971 San Fernando
earthquake are located close to the fault (Weber, 1980; Ziony and Yerkes, 1985). No slip
rate is available for the fault, but Wesnousky (1986) estimated the slip rate to be less than
0.1 mm/yr. Consequently, a 0.1 mm/yr was used in assessing the seismic potential of this
fault. The Northridge Hills fault is located approximately 7% miles (12 km) west-southwest
of the project property (Figure 5).

7.2.8 Santa Monica Fault Zone

The Santa Monica fault zone comprises an approximately east-west trending system of
north-dipping, reverse faults which form the northern boundary of the Peninsular Ranges

structural province in the Los Angeles Basin area. West of the intersection with the
coastline at Santa Monica, the Santa Monica fault zone includes the Malibu Coast fault and
a southern offshore branch, the Anacapa (Dume) fault. East of the coastline, the fault zone
includes the Potrero Canyon, Santa Monica, and Hollywood faults. Available data suggest
that faults of the Santa Monica fault zone have displaced deposits of late Pleistocene age,
and there is limited evidence of displacement of deposits of Holocene age (Crook and

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