Pacific Southwest Region
California, Nevada and Klamath Basin

Economic Analysis for Thread-leaved Brodiaea Revised Critical Habitat Proposal

Jul 20, 2010

July 19, 2010

Contact:  Stephanie Weagley, U.S. Fish and Wildlife Service – 760/431-9440 ext. 210

Economic Analysis for Thread-leaved Brodiaea Revised Critical Habitat Proposal Available for Public Review and Comment

Carlsbad, CA –The U.S. Fish and Wildlife Service (Service) announced today the availability of a draft economic analysis (DEA) and the reopening of the comment period for the December 8, 2009, proposed rule to revise critical habitat for thread-leaved brodiaea (Brodiaea filifolia), a federally threatened plant found in portions of Los Angeles, San Bernardino, Riverside, Orange, and San Diego counties.

In the December 8, 2009, proposed rule, the Service proposed to designate approximately 3,786 acres of critical habitat. For areas proposed as critical habitat, the Service is considering excluding 2,791 acres that are covered by four different Habitat Conservation Plans, and exempting approximately 1,531 acres owned or under the control of the Department of Defense. 

The DEA estimates economic impacts associated with areas proposed for critical habitat designation to be $425,000 to $529,000 over the next 20 years, assuming a 7 percent discount rate, with 49-59 percent of these impacts associated with development. 

Thread-leaved brodiaea, a purple-flowered perennial herb, grows 8 to 16 inches tall and flowers from late April to early June. It is found at elevations ranging from 100 feet to 2,500 feet and occurs in open areas associated with clay soils or soils with clay subsurface.

Comments and information on the draft economic analysis and the proposed revised critical habitat rule will be accepted until August 19, 2010. All comments received will be posted on

You may submit comments electronically to, or in writing to: Public Comments Processing, Attn: FWS-R8-ES-2009-0073; Division of Policy and Directives Management, U.S. Fish and Wildlife Service, 4401 N. Fairfax Drive, Suite 222, Arlington, VA 22203.

A copy of the notice is available online today at Federal Register Public Inspection. The proposed rule and draft economic analysis are posted on the Internet at at Docket No. FWS-R8-ES-2009-0073, or can be obtained by mail from the Carlsbad Fish and Wildlife Office.

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