Natural Resources • Management • Planning


Christine Harvey


Leopold Biological Services

​PO Box 421222

San Diego, CA 92124

Phone:  (619) 249-2531


California Gnatcatcher Habitat Photo by Christine Harvey


southern california edison 66 kv subtransmission line

PO BOX 421222 SAN DIEGO CA 92142 US   Tel: (619) 249-2531   Fax:  (858) 256-0871

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Leopold's environmental consultant services were contracted to survey and assess for suitable coastal California gnatcatcher habitat and sensitive natural resources in support of a high profile utility project.

​In addition to the habitat assessment, Leopold conducted focused California gnatcatcher surveys pursuant to Coastal California Gnatcatcher (Polioptila californica californica) Presence/Absence Survey Protocol for project related surveys described by USFWS 1997, revised July and in accordance with U.S. Fish and Wildlife Service recovery permit issued under section 10(a)(1)(A) of the Federal Endangered Species Act.

California gnatcatcher inhabits dry coastal slopes, washes, and mesas from coastal Southern California into Baja California, Mexico.  Three subspecies are recognized.  In the north, the California gnatcatcher is a resident of coastal sage scrub and adjacent ecotonal habitats from southern Ventura County southward to northwestern Baja California, Miexico near El Rosario at approximately 30 degrees North latitude.  California gnatcatcher is generally found at elevations below 500 meters.


​The proposed project would add a subtransmission line within the existing right-of-way.  The subtransmission line is needed to avoid possible overloads to existing transmission lines and to increase reliability and operational flexibility.


Leopold Biological Services