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Nossaman LLP

Stephanie N. Clark


T 949.477.7677
F 949.833.7878
18101 Von Karman Avenue, Suite 1800
Irvine, CA 92612

Stephanie Clark is a member of Nossaman’s Environment & Land Use Practice Group. She advises clients on a variety of land use and environmental matters, including matters dealing with the California Environmental Quality Act, Endangered Species Act, the National Environmental Policy Act, the Administrative Procedures Act, the California Planning and Zoning Law, the Clean Water Act, the Migratory Bird Treaty Act, and federal and state constitutions.  

Ms. Clark assists in representing resource developers, industry organizations, landowners, and public agencies on matters involving federal and state permitting issues, local zoning issues, environmental planning and litigation, and wildlife impact and permitting issues.  Ms. Clark counsels potential investors in both renewable energy and development projects on adherence to state and federal wildlife and environmental laws.  Ms. Clark assists in state and federal litigation, and has assisted in administrative hearings before various state and local hearing bodies.

Ms. Clark specializes in counseling both private developers and public agencies with respect to the California Environmental Quality Act and associated land use regulations.  Ms. Clark also provides general counsel assistance to public agencies and litigation representation related to the National Environmental Policy Act, the Department of Transportation Act, California environmental laws, and California public agency laws.

Prior to joining Nossaman LLP, Ms. Clark worked as a law clerk and legal extern at the City of Yakima City Attorney’s Office, Orange County Office of County Counsel, and City of Seattle Torts Division.

Ms. Clark regularly comments on news, events, and policies affecting endangered species issues in California and throughout the United States on the Firm’s Endangered Species Law & Policy blog.

Representative Work

  • Orange County Transportation Corridor Agencies. Provides counsel on state and federal permitting issues for the Tesoro Extension (SR 241).  Part of the team providing representation in administrative hearings and litigation concerning the Tesoro Extension project.
  • Arizona Department of Transportation. Part of team providing counsel to Arizona Department of Transportation regarding environmental issues related to the 20-mile South Mountain Freeway Project, and which successfully defended ADOT against NEPA and Section 4(f) challenges to the Project in Protecting Arizona’s Resources & Children v. FHWA, U.S. Dist. Ariz Case Nos. CV-15-00893; 012121 (D. Ariz. Aug. 19, 2016, Granting ADOT’s Motion for Summary Judgment).  The project is currently under construction, and on December 8, 2017, the Ninth Circuit Court of Appeals unanimously rejected two challenges to the 2016 decision, No.16-16586, No. 16-16605, --- Fed. Appx. ----, 2017 WL 6146939 (9th Cir. Dec. 8, 2017) (memorandum op’n).
  • Irvine Ranch Water District.  Part of the team providing both general counsel assistance and CEQA guidance to the Irvine Ranch Water District regarding both long term water storage projects and ongoing water delivery operations.
  • 24th Street Improvement Project Litigation.  Assisted litigation team representing the City of Bakersfield in return to writ proceedings, which resulted in the Superior Court dissolving the writ of mandate and injunction in October 2016, and a judgment in favor of the City.  Assisted litigation team in successful representation of City in writ proceeding initiated by Court of Appeal opponent seeking to enjoin project construction, resulting in the Court of Appeal denying the writ.  This matter is currently proceeding to a hearing on the merits before the Court of Appeal.
  • Amicus Curiae Brief in Center for Biological Diversity v. California Department of Fish and Wildlife, S217763. Drafted amicus curiae brief on behalf of transportation and water agencies regarding greenhouse gas emissions analysis compliance under the California Environmental Quality Act and incidental take of species protected under multiple California laws and the Endangered Species Act.
  • Bald and Golden Eagle Act Litigation. Drafted complaint on behalf of a wind and solar energy group challenging the U.S. Fish and Wildlife Service’s incidental take permitting program for Bald and Golden Eagles under the Bald and Golden Eagle Protection Act and Administrative Procedures Act.
  • Coalition for a Sustainable Delta.  Collaborate with client team to develop a strategy to address significant contributors to ecosystem decline in the Sacramento-San Joaquin Bay-Delta.  Assist client with implementation of strategy through regulatory and legal proceedings.
Stephanie  N. Clark
Stephanie  N. Clark



J.D., University of Washington School of Law, 2014, Washington Journal of Environmental Law & Policy, Managing Editor

M.A., Boston University, 2010

B.A., Boston University, 2010



U.S. Court of Appeals, Ninth Circuit

U.S. District Court, Central District of CA

U.S. District Court, Northern District of CA

Professional Affiliations

Scholarship Committee Member, Women in Transportation Seminar, Orange County Chapter

Languages Spoken

Conversational in French.

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