Ladd Cahoon

OverviewSignificant RepresentationsCurriculum Vitae



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Ladd Cahoon is a partner representing clients in a range of matters involving environmental due diligence and impaired property transactions, brownfields property redevelopment, environmental insurance procurement, administrative agency proceedings, and hazardous waste site remediation by property owners and other responsible parties. He also represents and advises clients in connection with USTs, storm water, wetlands, land use, CEQA, and mining issues.

Prior to his legal career, Mr. Cahoon conducted water quality enforcement at the U.S. Environmental Protection Agency, engaged in water quality and wetlands legislative policy and lobbying for the National Wildlife Federation, and worked as an earth sciences laboratory technician at Lawrence Berkeley Laboratory.

Significant Representations

Representing residential and commercial developers in purchases and development of environmentally impaired properties.

Representing a port in relation to neighboring contaminated properties.

Representing a large, international retailer in conducting environmental due diligence investigations, the negotiation of environmental terms in leases and purchase and sale agreements, and the litigation regarding environmental issues, for new and expanding facilities in California and elsewhere in the western United States.

Representing a former chemical manufacturer in connection with its legacy liability arising out of its status as former large volume generator to a very large Class I hazardous waste landfill, by negotiating investigation and remediation requirements with state agencies and internal cost allocation formulas with other potentially responsible parties.

Representing small ranchers and estate winery and vineyard owners regarding underground storage tank release remediation, state UST Fund reimbursement strategies and successful appeals, and property development.

Representing neighborhood groups opposing specific development plans in residential areas.

Curriculum Vitae


  • Georgetown University Law Center, J.D., 1997 (Executive Editor, Georgetown International Environmental Law Review).
  • University of California at Berkeley, B.A. (Envtl. Sciences), 1992.

Admissions & Memberships

State Bar Admissions

  • California

Federal Court Admissions

  • Ninth Circuit Court of Appeals
  • United States District Courts for Northern, Central, Eastern and Southern Districts of California
  • United States Court of Appeals for the Federal Circuit


  • The State Bar of California Environmental Law Section
  • Executive Committee, Environmental Law Section, Bar Association of San Francisco
  • American Bar Association, Section of Environment Energy and Resources
  • Environmental Bankers Association

Professional Activities and Honors

  • Presenting “Saving the Deal When Environmental Issues Arise” at the California State Bar Annual Real Estate Retreat in San Francisco, April 19 -22, 2018.
  • Presented “Vapor Intrusion – What Property Owners Need to Know” at Port of Oakland, October 23, 2017.
  • Presented “Navigating Vapor Intrusion Concerns in Real Estate Transactions and Development” at the 30th annual LACBA Environmental Law Section Spring Super Symposium in Los Angeles, California on April 8, 2016.
  • Moderated panel on vapor intrusion, Bar Association of San Francisco, July 11, 2014, with Stephen Hill (SFB RWQCB), Robbie Ettinger (Geosyntec), Michelle King (E&K), and Alana Lee (U.S. EPA).