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Kathryn M. Casey


Office: Irvine

Phone: 949.851.7478

Fax: 949.752.0597


Kathryn Casey

Kathryn M. Casey has extensive administrative and litigation experience involving CEQA, NEPA, air quality and water-related issues, and land use matters.

Ms. Casey has represented clients before city councils, county boards of supervisors, planning commissions, hearing boards and other local agencies and special districts in defending air quality and permit violation notices, complying with habitat conservation plans, and obtaining variances, conditional use and grading permits, and other development approvals and entitlements.

Ms. Casey has also counseled clients regarding environmental mitigation and regulatory compliance, and has represented clients in the state and federal courts, courts of appeal, and before the office of administrative hearings in litigation matters related to CEQA, NEPA, the Clean Air Act, Political Reform Act, Outdoor Advertising Act, and other environmental, real estate and municipal law issues.

Ms. Casey currently represents Imperial County Air Pollution Control District in air quality and mitigation efforts related to the Quantification Settlement Agreement, which involves transfers of Colorado River water and environmental impacts at the Salton Sea. Ms. Casey also represents the Port of Los Angeles on air quality issues and North County Transit District on environmental matters.  She also represented the Los Angeles Department of Water and Power with respect to air quality mitigation at Owens Lake.


  • State Bar of California
  • Orange County Bar Association, Environmental Law Section
  • Harbor Association of Industry and Commerce
  • Alumni Association, Chapman University School of Law


  • Lewis and Clark College Northwestern School of Law, LL.M., Environmental and Natural Resources Law, 2004
  • Chapman University, School of Law, J.D., 2003
    • Cum Laude
    • Appellate Moot Court Honors Board
    • Chapman Law Review, Editor-in-Chief
  • Chapman University, B.A., 2000
    • Summa Cum Laude


  • Named to the Rising Stars list by Southern California Super Lawyers  magazine published by Law Politics Media, Inc. and Los Angeles magazine, 2008-2015

Classes & Seminars:

  • Presenter, California Water Law & Policy Conference (Argent), Mitigating the Decline of Air Quality Impact Mitigation at the Salton Sea, San Francisco, April 19-20, 2012
  • Presenter, APA Webinar, Western Water Woes and the Impending Demise of the Salton Sea, September 2010
  • Instructor, BIACC Seminars, Indirect Source Rules, June/August 2006

Published Cases & Works:

  • Colorado River Water Transfer Deal Declared Invalid, (Co-Author), Real Property Law Reporter (CEB), January, 2011
  • New Smog Fees Target New Developments, (Co-Author), Central Cal. Builder, March, 2006
  • BIACC Building Industry E-News, (Co-Author), Issue No. 18, March, 2006
  • Recent Court Decisions and Publications Provide Guidance in Piecing Together Water Supply Analyses for Development Projects, (Co-Author), Cal. Water Law & Policy Reporter., Vol. 15, No. 1, October, 2004
  • Water in the West: Vested Rights Merit Protection under the Takings Clause, 6 Chap. L. Rev. 305, 2003
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