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 City of Solana Beach
Section 6
Shoreline and Coastal Bluff Management Strategies Draft MEIR
Significant Unavoidable Adverse Impacts
6.0 SIGNIFICANT UNAVOIDABLE ADVERSE IMPACTS
Section 15126.2(b) of the CEQA Guidelines requires a description of any significant adverse
impacts resulting from a project, including impacts that cannot be mitigated to below a level of
significance. Each alternative and subsequent projects were evaluated with respect to specific
resource areas to determine whether implementation would result in significant adverse impacts.
Specific significance thresholds were defined for each potential impact associated with the
resource areas of geology and soils, land use, biological resources, recreation and public
access, population and housing, aesthetics, and utilities and service systems. Mitigation
measures were developed for alternatives to reduce impacts to below a level of significance.
The No Project Alternative and subsequent projects would have significant long-term impacts to
recreation and lateral public access from the construction of seawalls and seacave notch fills
and aesthetics from the construction of seawalls. Mitigation measures were developed for
aesthetics under this alternative, which, if implemented, would reduce impacts to less than
significant levels. Continuous sand replenishment similar or identical to what is proposed in
connection with Alternative 3 -- would be the only feasible mitigation to reduce impacts to
recreation and lateral public access to less than significant levels. These same impacts would
apply to Alternative 2. However, long-term recreation, lateral public access, and aesthetic
impacts would be more severe with Alternative 2 because there is a greater tendency to build
seawalls under the California Coastal Commission's permit process. For Alternative 3, the
SANDAG Draft EIR found that all of the potential impacts associated with sand replenishment
can be mitigated to below levels of significance and are not considered significant or
unavoidable. The Regional Beach Sand Retention Strategy report prepared by SANDAG
(SANDAG 2001b) proposes mitigation measures which could be used to reduce potential
significant impacts associated with sand retention devices. Unavoidable adverse impacts
associated with sand retention structures include the potential permanent loss of low and high
relief reef habitat and displacement of fish species, as discussed in Section 3.3. Specific
technical studies would be required to fully assess the unavoidable adverse impacts associated
with a specific sand retention project. Alternative 4 would have unavoidable significant impacts
associated with land use and housing and population, which cannot be mitigated to below a
level of significance.
Project No. 323530000
Page 6-1
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