Mr. Garrison is the firm’s founder and managing shareholder. Mr. Garrison personally oversees the firm’s environmental, real estate and land use matters. Mr. Garrison is an Adjunct Law Professor, Director of Law of the Oceans and Climate Change, Judge Pro Tem with the Superior Court, a licensed attorney in California, Texas, New York, and District of Columbia; he is also a certified Mediator. Mr. Garrison’s environmental and oil & gas experience includes: Negotiating and drafting drilling contracts for offshore venues including North Sea, Africa, Micronesia and Europe.

Mr. Garrison is an ABA Committee member of the Environmental Litigation and Condemnation, Planning & Land Use Litigation Committees. Mr. Garrison is a Section member of the Environmental, Energy & Natural Resources of the District of Columbia State Bar


  • Southern Methodist University School of Law, Class of 1988, J.D.
  • Pepperdine University School of Law, The Straus Institute for Dispute Resolution
  • Post-Graduate, The Art of Facilitating Settlement, Mediator Certification (Malibu, CA)
  • Southwest Texas State University, Class of 1982, M.A.
  • Southwest Texas State University, Class of 1979, B.A.
    • with honors
  • Stanford School of Law
    • Post-Graduate, Trial Advocacy (Palo Alto, CA)

Admissions Details

1989, California1990, United States District Court for the Eastern District of California1990, United States District Court for the Northern District of California1990, United States Court of Appeals for the Ninth Circuit1991, District of Columbia1993, Texas1995, United States District Court for the District of Arizona1996, United States Court of Appeals for the Third Circuit1997, United States Court of Appeals for the Fourth Circuit2004, United States District Court for the Central District of California2008, United States Court of Appeals for the Second Circuit2009, New York2009, United States Court of Appeals for the Sixth Circuit2015, United States District Court for the Western District of Washington2018, United States Supreme Court2019, United States District Court for the Southern District of Alabama2020, United States Court of Appeals for the Fifth Circuit2021, United States District Court for the Southern District of Texas

Case Law

  • Caldo Oil vs. State Water Resources Control Board (1996) - 44 Cal. App. 4th 1821


  • 'Ethics & Water Law' (2015) - National Business Institute. Fresno, Bakersfield, California.

Film & TV

  • 'Whale Wars' (2015/S07) - E01: The Devil's Den; E02: Fight to Death; E03: The Darkest Hour.
  • 'Whale Wars' (2014/S06) - E01: A Commander Rises.

Judicial and Mediation Experience

  • Judge Pro Tem, Santa Barbara County Superior Court (Santa Barbara, CA) 2002-Present
  • Judge Pro Tem, Ventura County Superior Court (Ventura, CA) 2007-Present
  • Judicial Training, SB County Superior Court (Santa Barbara, CA) 2001, 2005 and 2009
  • Certificate of Completion SB County Superior Court: Judicial Ethics (2007) & Procedure (2006)
  • Certificate of Appreciation SB County Superior Court: Temporary Judge (2009)
  • Conflict Management Institute and the County Mediation Program of Santa Barbara County, Mediation Skills Training (2004)

Reported Cases

• Court of Appeal, Third District, California, CALDO OIL COMPANY, Plaintiff and Appellant, v. STATE WATER RESOURCES CONTROL BD. et al., Defendants and Respondents. No. C019008. Decided: April 30, 1996. Gregg S. Garrison, for Plaintiff and Appellant. Daniel E. Lungren, Attorney General, Defendants and Respondents. 44 Cal.App.4th 1821 (Cal. Ct. App. 1996) Cal.Rptr. 2d 609.

Jurisprudence Honors & Awards

  • American Jurisprudence Award (SMU Dallas, TX) 1987
  • Rule 46 D.C. Bar Admission based on Top 10% National Bar Exam (Washington, D.C.) 1989

Speaking Engagements

  • 'SWRCB UST Cleanup Fund Update' (2014) - California CUPA Forum.
  • The Flint Michigan Water Cruses Webinar: November 2016.
  • Nationally and internationally broadcast ninety-minute webinar on how to confidently handle cases involving newly emerging issues and law in lead contamination in drinking water.
  • California Unified Program Training Conference Speaker, “Today’s Challenge is Tomorrow’s Achievement,”: February 2014. Instructed governmental first responder on liability allocation among responsible parties.
  • Environmental Assessment Association National Expo & Conference, “How to Avoid Environmental Litigation”: Las Vegas, NV, October 2006.
  • National Business Institute (NBI) Seminars:
    • “Ethics and Water Law”: January 2015, Bakersfield and Fresno, CA.
    • “Agricultural Water Law: Current Issues”: December 2015, Sacramento and Fresno, CA.
    • “Water Quality Standards/Contamination Issues”: January 2016, Pasadena and Ventura CA.
    • “Drought Challenges, and Sustainability”: January 2016 and 2017, Bakersfield and Fresno, CA.
    • “Contracts on Tribal Lands: Ethical Considerations”: January 2017, Palm Desert, CA.
    • “Water Law in California”: July 2020, Broadcast webinar on water law compliance, litigation and mediation of trending issues based on the Groundwater Sustainability Act.

Legal Memberships

  • Maritime Law Association of the United States (Wilton, Connecticut) 2021-Present
  • Federal Bar Association 2021-Present
  • American Bar Association (Chicago, Illinois) 1990-Present
  • Trial Lawyers Association of America (Washington, D.C.) 1995
  • R.E.I. with California E.P.A. (Sacramento, California) 1990
  • Phi Delta Phi, Monteith Inn, International Legal Fraternity (Fort Lauderdale, Florida) 1989
  • State Bar of Texas, Law Student Division (Austin, Texas) 1987