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S K Y L I N E R A N C H M O D I F I E D T R A C T 60922 A D D E N D U M
C O U N T Y O F L O S A N G E L E S

1. Introduction

3. New information of substantial importance that was not known and could not have
been known with the exercise of reasonable diligence at the time the previous EIR was
certified or the negative declaration was adopted shows any of the following:

a. The project will have one or more significant effects not discussed in the previous
EIR or negative declaration.

b. Significant effects previously examined will be substantially more severe than
identified in the previous EIR.

c. Mitigation measures or alternatives previously found not to be feasible would in fact
be feasible, and would substantially reduce one or more significant effects of the
project, but the project proponent declines to adopt the mitigation measures or
alternatives.

d. Mitigation measures or alternatives that are considerably different from those
analyzed in the previous EIR would substantially reduce one or more significant
effects on the environment, but the project proponent declines to adopt the
mitigation measures or alternatives.

Preparation of an Addendum to an EIR is appropriate when none of the conditions specified in Section
15162 (above) are present and some minor technical changes to the previously certified EIR are necessary.

After consideration of the potential environmental impacts of the proposed modifications to the Approved
Project, the County of Los Angeles has determined that 1) none of the conditions requiring preparation of a
subsequent or supplement to an EIR have occurred, and 2) the circumstances described in Section 15164 of
the CEQA Guidelines exist. Therefore, an Addendum to the Skyline Ranch EIR has been deemed
appropriate.
1.1.2 Scope of Analysis in this Addendum

The discretionary approval subject to CEQA for this project is the modification of Approved TTM 60922.
As lead agency under CEQA for this action, the County of Los Angeles is required to evaluate the
environmental impacts associated with this discretionary approval (modified tract map). The “scope” of the
review for project-related impacts for this Addendum is limited to changes between the Approved Project
and the requested modifications to the project (Modified Project). The previously certified environmental
documentation and related approved mitigation for impacts associated with the Approved Project effectively
serve as the “baseline” for the environmental impact analysis. This Addendum also addresses changes in
circumstances or new information that would potentially involve new environmental impacts.

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