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Thierry is a member of the Environmental Practice Group. He helps clients resolve air, soil, and groundwater disputes. He has significant experience litigating claims under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), the Resource Conservation and Recovery Act (RCRA), the Clean Water Act, and other State and Federal statutes as well as common law.

Thierry has achieved successful results for his clients – both public and private sector entities – in a variety of complex environmental, land use, construction, and eminent domain matters. In addition, he regularly assists clients on natural resources issues involving water, oil and gas interests, air and water permitting and violations including the National Pollutant Discharge Elimination System (NPDES) and Title V of the Clean Air Act.

Thierry has an active land use practice, where he advises clients on a broad range of permitting, zoning, California Environmental Quality Act (CEQA) and National Environmental Policy Act (NEPA) matters, and eminent domain expertise.

Other Info About Thierry


Legal Work Highlights

Representing a developer of an eight-story condominium project in a “brownfield” area in a CEQA petition—obtaining a dismissal via a motion challenging writ’s substantive claims, targeted aggressive response resolved in a court dismissal a month into the lawsuit. 

Successfully defending a metal parts stamping company in a state lawsuit brought by neighboring business alleging PCE/TCE contamination from our site to theirs. Argued the neighboring site was a large source of PCE/TCE contamination before the State Regional Water Quality Board—turning its attention on the neighboring business. State lawsuit was eventually tolled. 

Representing a public entity seeking to expand their waste water treatment facility by defeating a challenge brought on by an environmental group alleging that the waste water treatment facility would impact a protected local fish species. Successfully demonstrated that legal and scientific evidence showed species loss due to heron predator. 


Law School

University of Notre Dame Law School, J.D., 1991

Undergraduate School

University of California, Riverside, B.A. Political Science, 1982

Bar Memberships

Thierry is licensed to practice in the following state(s):

California, 1992

Professional Affiliations

Professional Affiliations & Memberships

Association of Business and Trial Lawyers 

Orange County Bar Association, Environmental Law Section 


Civic Activities

Civic & Charitable Organizations

Environmental Liabilities and Penalty Reporter, Editor 

Global Environmental Legacy Foundation, Executive Director 

Orange County Big Brothers, Big Brother 

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