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3.8 Cultural Resources

Historic Significance. The resource has historical significance as defined by the State Office of Historic
Preservation. A resource possesses historical significance if it meets one or more of the following criteria:

1. It is associated with events that have made a significant contribution to the broad patterns of local or
regional history, or the cultural heritage of California or the United States; or

2. It is associated with the lives of persons important to local, California, or national history; or

3. It embodies the distinctive characteristics of a type, period, region, or method of construction, or
represents the work of a master, or possesses high artistic values; or

4. It has yielded, or has the potential to yield, information important to the prehistory or history of the
local area, California, or the nation.

Buildout in the County’s Planning Area would result in a substantial increase in population and

infrastructure. This increase in population would require the development and disturbance of vacant
lands. Implementation of the Area Plan would then have the potential to have a substantial adverse
change in the significance of a historical resource as defined in Section 15064.5.

As the County expands, the development of infrastructure would potentially encroach on designated
historical structures. Identification of known structures, (Figure 3.8-1 and Table 3.8-2) will help protect
them and contribute to community identity and a sense of history. Policy CO 5.1.1 to Policy CO 5.1.3

require review of appropriate documentations for sites identified on the actual and historic resources
map (Figure 3.8-1) prior to issuance of any permits for grading, demolition, alteration, and/or new
development, to avoid significant adverse impacts. Policy CO 5.1.2 requires review of any proposed
alterations to cultural and historic sites identified in Table 3.8-2 or other sites which are so designated

based on guidelines contained in the Secretary of the Interior’s Standards for the Treatment of Properties
or other adopted County guidelines. As new information about other potentially significant historic and
cultural sites becomes available, an update to the cultural and historic resources inventory would be
required and appropriate measures applied to all identified sites to protect their historic and cultural

integrity (Policy CO 5.1.3). The quality of significance in American history, architecture, archaeology,
engineering, and culture is present in districts, sites, buildings, structures, and objects that possess
integrity of location, design, setting, materials, workmanship, feeling, and association.

Federal, state, and local regulations help determine if a structure, building, or land site should be listed as
a historical resource. The County should maintain and acquire, where appropriate, open space to
preserve cultural and historic resources (Policy CO 10.1.4). As identified in the federal, state, and local

regulations any new development, as a result of the proposed build out, would have to conform to the
aforementioned regulations to enhance and maintain the character, architectural style, or significance of

Impact Sciences, Inc. 3.8-15 One Valley One Vision Revised Draft Program EIR
0112.023 County of Los Angeles Area Plan
November 2010