Upper Oso Habitat Restoration Plan IS/MND


SCH Number
Lead Agency
Rancho Santa Margarita, City of (City of Rancho Santa Margarita)
Document Title
Upper Oso Habitat Restoration Plan IS/MND
Document Type
NEG - Negative Declaration
Present Land Use
GP: Regional Open Space / OSR Z: O'Neill

Document Description
The proposed project involves restoration of approximately 82.9 acres within O'Neill Regional Park. The proposed project includes 66.3 acres of revegetation and 16.6 acres of enhancement of native vegetation, including coastal sage scrub, cactus scrub, southern willow/mulefat scrub, scrub oak chaparral/oak woodland, and foothill needlegrass grassland. Successful implementation of the proposed project would improve habitat quality for target species, including the coastal CA gnatcatcher, Cooper's hawk, cactus wren, grasshopper sparrow, and riparian birds. Implementation of the proposed project is anticipated to begin in the spring of 2014. Successful completion of the proposed project, including the 5-year maintenance, monitoring, and reporting phase, is anticipated in early 2020.

Contact Information
Nate Farnsworth
City of Rancho Santa Margarita
22112 El Paseo
Rancho Santa Margarita, CA 92688

Phone : (949) 635-1800 x6704


33°39'57.4"N 117°37'9.72"W
Rancho Santa Margarita
Cross Streets
Glenn Ranch Road & El Toro Rd
Total Acres
State Highways
Hwy 241
Hillside Montessori
Upper Oso Reservoir; Trabuco Creek; Hickery Creek

Notice of Completion

Review Period Start
Review Period End
Development Type
Other (Restoration of approximately 82.9 acres of habitat)
Local Action
Other Action Other Action: Restoration Plan
Project Issues
Aesthetic/Visual Agricultural Land Air Quality Archaeologic-Historic Biological Resources Drainage/Absorption Flood Plain/Flooding Forest Land/Fire Hazard Geologic/Seismic Minerals Noise Population/Housing Balance Public Services Recreation/Parks Schools/Universities Septic System Sewer Capacity Soil Erosion/Compaction/Grading Solid Waste Toxic/Hazardous Traffic/Circulation Vegetation Water Quality Water Supply Wetland/Riparian Growth Inducing Land Use Cumulative Effects
Reviewing Agencies
California Air Resources Board California Department of Conservation California Department of Fish and Wildlife, South Coast Region 5 California Department of Parks and Recreation California Department of Transportation, District 12 California Highway Patrol California Native American Heritage Commission California Regional Water Quality Control Board, San Diego Region 9 Department of Water Resources Resources Agency

Disclaimer: The document was originally posted before CEQAnet had the capability to host attachments for the public. To obtain the original attachments for this document, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at state.clearinghouse@opr.ca.gov or via phone at (916) 445-0613.

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