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SOURCE: National Park Service, study website, spring 2015
Rim of the Valley Corridor
Draft Special Resource Study & Environmental Assessment
[for complete document see study website at
http://www.nps.gov/pwro/rimofthevalley]
ABSTRACT
Purpose and Need
The Consolidated Natural Resources Act of 2008 (P.L. 110-229, May 2008)
directed the NPS to evaluate: (1) the suitability and
feasibility of designating all or a portion of the area known as the Rim of
the Valley Corridor as a unit of Santa Monica Mountains
National
Recreation Area (SMMNRA); and (2) the methods and means for the protection
and interpretation of this
corridor by the National Park Service,
other federal, state, or local government entities or private or
non-governmental organizations.
The Rim of the Valley Corridor is described in legislation as the area
generally including the mountains encircling the San
Fernando, La
Crescenta, Santa Clarita, Simi, and Conejo Valleys in southern California.
Study Area
The study area covers approximately 650,000 acres in the southern California
region. It includes SMMNRA (approximately
153,000 acres) and approximately 180,000 acres of lands managed by the U.S.
Forest Service (the Angeles National Forest and the
recently established San Gabriel Mountains National Monument). Numerous
agencies and conservation organizations manage
lands within the study area. Over 5 million people live in the study area,
another 13 million live in surrounding communities within
the
greater Los Angeles metropolitan area. Land use is diverse and includes
large natural areas, suburban communities, farms
and ranches, highly urbanized areas, freeways, and an array of public
infrastructure. However, the vast majority of lands (84%)
are undeveloped.
Alternatives Evaluated
The study evaluates a range of opportunities to cooperatively manage the
significant resources of the study area:
• Alternative A: Continuation of Current Management
(No Action), serves as a baseline for evaluating the action alternatives;
• Alternative B: Cooperative Conservation Partnership
would foster cooperative planning and funding tools for the NPS, partner
agencies and landowners in
the Rim of the Valley Corridor and key habitat
linkages to the Los Padres and Angeles national forests (no new areas would
be added to SMMNRA);
• Alternative C: Rim of the Valley Boundary
Adjustment (Preferred Alternative), a SMMNRA
boundary adjustment (approximately
173,000-acre addition) that
would provide more parks and protect habitat linkages, with an emphasis on
creating
more recreational opportunities near urban areas; and
• Alternative D: Regional Rim of the Valley Boundary
Adjustment and Cooperative Conservation Areas, a SMMNRA
boundary
adjustment (approximately 313,000 acre addition) with an emphasis on
protecting regional wildlife corridors, would add
most areas within Rim of the Valley Corridor (excluding U.S. Forest Service
managed areas) to SMMNRA. Cooperative
conservation approaches would also
be recommended for key habitat linkages between the Rim of the Valley
Corridor study
area and the Los Padres and Angeles national forest
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