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  • University of Virginia, JD

  • Smith College, BA


  • All California courts 

  • U.S. District Courts (Northern District, Central District) 

  • U.S. Court of Appeals (9th Circuit)

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Catherine specializes in California and federal environmental law.  After decades of experience with a broad range of environmental compliance, administrative, litigation, and enforcement matters, Catherine's practice at EGC focuses on remediation projects, vapor intrusion, transactions and development projects, and Proposition 65 -- with a special interest and growing expertise in SB 54, California's new plastics' reduction legislation and other product stewardship intiatives.


Catherine represents a broad range of clients and industries, including manufacturing facilities, the maritime industry, food and beverage companies, consumer products, affordable housing developers, public agencies, leaders in the commercial real estate and multi-family housing industry, a B corporation, start-up companies, and family-owned businesses. She has represented an S&P 500 publicly-traded REIT in the multi-family homes industry for over twenty-five years and has represented several of her other current clients for over a decade or more.

Catherine has served either as lead counsel or co-counsel in several major cases, including citizens’ suits claims (Prop 65, stormwater), CERCLA cost recovery claims, and claims for property damage associated with subsurface contamination and soil vapor intrusion.


At EGC, she handled the landmark case, EHA v. Sream, Inc., 83 Cal. App. 5th 721 (2022), in which the appellate court affirmed the trial court decision (also handled by EGC) in favor of EGC's client, Sream, Inc., holding that no Proposition 65 warning was required because only direct exposures require warnings under Proposition 65. The Sream case was widely covered in the media, including the San Francisco Chronicle where Catherine explained that the court was concerned that a Proposition 65 warning under the facts of the case would only serve to confuse the public.


Catherine also handled the ground-breaking case of U.S. v. Chapman, 146 F.3d 1166, 1169 (9th Cir. 1998), which for the first time established a limit on U.S. EPA's ability to recover its attorneys' fees in CERCLA cost-recovery actions. The Ninth Circuit adopted Catherine's novel argument that the U.S. EPA should be governed by the same standard applicable to private plaintiffs seeking recovery of fees under various federal statutes. Chapman has been the subject of a law review article and cited in scores of federal cases.

Recent representative projects include:

  • Handling environmental matters for the Port of Oakland in the Oakland A's proposed (but now lapsed) $24 billion development of the Howard Terminal into a baseball stadium and a commercial and residential complex;

  • Developing Proposition 65 compliance plans for numerous clients, including consumer products, food & beverage, and the healthcare industry;

  • Assisting an international printing company respond to customer inquiries about product stewardship practices;

  • Providing advice about FTC's Green Guides and potential greenwashing claims; 

  • Advising commercial property owner on long-term remediation project including off-site vapor intrusion investigation and discovery of emerging contaminants.

  • Advising developer client for implementation of vapor intrusion mitigation at mixed use development project

  • Assisting property owner obtain closure for site with vapor intrusion

  • Settling Proposition 65 notice of intent to sue on behalf of pharmaceutical company. 

Before establishing EGC PC, Catherine co-founded and managed the law partnership of EGC LLP, served as a partner at Hanson Bridgett LLP in San Francisco for seven years, and a partner at Wendel Rosen Black & Dean LLP in Oakland for thirteen years. Catherine started her environmental practice at Wilson Sonsini Goodrich & Rosati in Palo Alto. Before practicing law, she served as a consultant to ICF, Inc., providing support to the U.S. EPA in development of some of the first environmental regulations under certain provisions of CERCLA and RCRA.

Catherine has served on the board of directors of Zyzzyvaa nationally known literary magazine and of Bay Area Legal Aid, a non-profit group providing pro bono legal services to the underserved.




  • Advisory Board for the Bar Association of San Francisco's Environmental Section; previously served as Chair of the Section

  • Advisory Board for Proposition 65 Clearinghouse News

  • SB 54 Working Group, National Stewardship Action Council 

  • Member, Product Stewardship Society

Speaking Engagements (2022-2023)

  • Contaminated Properties: Beyond ASTM, Stafford Webinars (scheduled for July 2023)

  • Implementing an ESG ProgramBar Association of San Francisco (June 2023)

  • Attorneys Fees and Prop 65, Proposition 65 Clearinghouse Annual Conference (September 2022)

  • Buying Contaminated Properties, California County Counsel Association (May 2022)

  • Purchasing Contaminated Properties, Stafford Webinars (April 2022)

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