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 City of Solana Beach
Section 7 Irreversible Changes and
Shoreline and Coastal Bluff Management Strategies Draft MEIR
Irretrievable Commitment of Resources
7.0 IRREVERSIBLE CHANGES AND IRRETRIEVABLE COMMITMENT OF RESOURCES
Section 15126(c) of the CEQA Guidelines requires an EIR to address any significant irreversible
environmental changes and irretrievable commitment of resources that may occur as a result of
alternative implementation. This includes use of nonrenewable resources, the commitment of
future generations to similar uses, and irreversible damage, which can result from
environmental accidents associated with the project.
Irreversible changes associated with Alternative 1 and subsequent projects would eventually
involve the potential armoring of the entire length of the City's shoreline. This would include the
alteration of the natural environment in currently unarmored areas, and potential loss of
recreational opportunities. Construction of protective structures would involve some building
materials, nonrenewable energy sources, and labor required to operate trucks, machinery, and
other equipment. However, this alternative and subsequent projects would not use a substantial
amount of resources at one time, but would require resources periodically over a long period of
time. Alternative 2 is considered to have the same irreversible changes and irretrievable
commitment of resources as the No Project Alternative.
Alternative 3 would result in the placement of 140,000 cubic yards of dredged beach fill material.
This alternative and subsequent projects would also include offshore construction of sand
retention structures. These activities would result in consumption of nonrenewable energy
sources and labor to operate trucks, pumping equipment, grading equipment, and any other
necessary machinery associated with retention projects. Depending on funding to continue
sand replenishment and retention projects, this alternative would not use a substantial amount
of resources in the short term. However, long-term continuation of sand replenishment and
retention projects would require continuous labor and nonrenewable energy sources. Sand
retention projects would also require offshore marine resources to be permanently altered by
implementing structures. Other sources of material for sand replenishment and retention
structures include: (1) dredging sand from behind dam sites, (2) removing dams that interrupt
river-borne sediment, or (3) terminating regional sand mining activities. The need for local water
supplies and sand and aggregate resources would make it infeasible to remove dams and
terminate sand mining activities respectively.
Alternative 4 would involve alteration of the human environment through eventual permanent
loss of residential land use and housing and population resources. These losses would have
potential implications for commitments of resources such as labor and nonrenewable energy
resources required for the deconstruction and removal of housing structures as they become
increasingly threatened by erosion.
Project No. 323530000
Page 7-1
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