SARI Protecting the Environment
The Santa Ana River and its shoreline are home to numerous threatened or endangered
species, including the Santa Ana sucker, the least Bell's vireo, the southwestern
willow flycatcher, and the California gnatcatcher. To protect these birds and fish,
safeguard their habitat and diminish any impacts, Orange County Flood Control District
and its project partners, the Orange County Sanitation District and the Santa Ana
Watershed Project Authority, have developed a comprehensive monitoring and protection
plan.
Qualified biologists, who will monitor the construction sites throughout the Santa
Ana River Interceptor Relocation Project, are the cornerstone of the plan. Their
focus is to identify the presence or absence of any threatened or endangered species
within the construction area, determine whether additional protection measures should
be implemented, and confirm project compliance with permit requirements.
The following are just some of the efforts planned during the SARI Relocation Project
to protect sensitive habit and threatened or endangered species:
Protecting Riparian Habitat
Wherever possible, riparian habitat will be left untouched during the course of
construction. If, however, it becomes necessary to remove riparian habitat, the
activity will take place outside of the breeding season, August 16 through February
28. This will minimize impacts to least Bell's vireo and other migratory birds,
including disturbances which would cause them to abandon active nests containing
eggs and/or young.
If vegetation removal needs to occur during the breeding season, a qualified biologist
will survey the vegetation for nesting birds of all species to determine if any
active nests are present. Surveys will be conducted once a week for eight consecutive
weeks, at the appropriate times of day during the breeding season, and surveys will
end no more than three days prior to clearing.
Survey documentation and our findings will be submitted to the U.S. Fish and Wildlife
Service and the California Department of Fish and Game for review and concurrence
prior to conducting project activities.
Noise Measurements and Control During Vireo/Gnatcatcher Breeding Season
Weekly surveys for the least Bell's vireo and the California gnatcatcher will be
conducted by a qualified biologist in areas along the Santa Ana River where the
birds are most likely to breed from February 15 to September 1, or until all juveniles
have fledged, within 500 feet of an active construction area. The purpose of the
surveys will be to identify the limits of occupied habitat and breeding status of
the birds.
Surveys will also be conducted for the California gnatcatcher prior to vegetation
removal, in habitat where they are most likely to nest within 500 feet of an active
construction area. If gnatcatchers are identified within this survey area, the information
will be provided to the U.S. Fish and Wildlife Service. If active nest sites are
within or immediately adjacent to the work area, additional coordination and/or
consultation may be required to avoid an unauthorized take.
Trees
To the greatest extent possible, all reasonable efforts will be made to avoid removing
or damaging mature trees. However, if mature trees within Green River Golf Course,
Featherly Regional Park, and other public areas are removed or damaged as a result
of construction, the trees will be replaced.
Trees within Featherly Park that cannot be avoided will be replanted in a new location
at a 3:1 ratio (3 new trees for every 1 tree removed). Affected non-native trees
will be replaced with native species at the same ratio. All trees replaced will
be monitored for one-year and replaced as necessary.
During Construction
Open-trench construction methods will only occur during daylight hours to minimize
disturbances to wildlife species that move primarily at night. In particular and
whenever possible, above-ground operations near the Coal Canyon underpass, which
is an important wildlife corridor, will not begin until 7 a.m. and will be completed
before dusk each day. The only exception will be for an activity that must continue
non-stop until it is completed for physical or engineering reasons, such as the
micro-tunneling process.
For more information about the project's effort to mitigate impacts during construction,
please refer to the SARI SEIS/EIR or the
HMMP.
Environmental Coordination
SARI Relocation Project partners are coordinating with the following resource and
governmental agencies:
- U.S. Fish and Wildlife Agency
- U.S. Army Corps of Engineers
- California Department of Fish and Game
- State Historic Preservation Officer
- Environmental Protection Agency
- Regional Water Quality Control Broad
- California State Parks
- South Coast Air Quality Management District
- National Resource Conservation Service
- Cal/OSHA Mining and Tunneling
- City of Yorba Linda
- City of Anaheim
- Yorba Linda Water District
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