James L. Arnone(Partner)


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Jim Arnone is a partner in the firm’s Los Angeles office and the Global Chair of the Environment, Land & Resources Department. Mr. Arnone previously served as the Deputy Managing Partner of the Los Angeles office and as the Global Co-Chair of the Environmental Litigation Practice.

He has particular experience in the following areas:

  • Compliance with state and federal environmental laws
  • Infrastructure, energy, and real estate development projects
  • Litigation over the legal obligations of local, state, and federal governmental bodies

Mr. Arnone is a frequent author and lecturer on environmental, climate change, and real estate law. He co-authored a global climate change chapter in an ABA-published Environmental Litigation book, co-edited the Water Quality section of the California Municipal Law Handbook, and authored various articles and Client Alerts on new developments in land use and environmental law. Most recently, Mr. Arnone was recognized by the Daily Journal as one of “California’s Top 50 Development Lawyers.”

Mr. Arnone is an adjunct professor at the University of Southern California Law School, where he has taught Environmental Law since 1996. Mr. Arnone also serves on the California Chamber of Commerce Board of Directors, where he serves as Chair of its Environmental Policy Committee. Mr. Arnone speaks in many venues on environmental and real estate development topics, including CEQA, land use, global climate change, NEPA, and various environmental laws. He has co-chaired a day-long CEQA symposium annually since 2005, convening highly distinguished faculties from government, consulting firms, and the legal community. He previously served on the Executive Committee of the Los Angeles County Bar Association’s Environmental Law Section, during which he chaired several committees.


Mr. Arnone has extensive courtroom experience, both in the trial courts and in the appellate courts. He has advised numerous clients on the implications of current and pending global climate change rules. Mr. Arnone also frequently advises clients on and litigates matters involving the enforcement of governmental duties, including environmental laws, open meeting and public records laws, charter school laws, and initiative and referendum laws.

Mr. Arnone has often advised clients and litigated controversies involving a wide range of environmental and land use laws, including:

  • Air quality laws, water quality laws, water supply laws
  • California Coastal Act
  • California Environmental Quality Act (CEQA)
  • California’s “Unfair Competition Law”
  • Endangered Species Act
  • Historic preservation laws
  • National Environmental Policy Act (NEPA)
  • “Proposition 65”
  • State and local land use laws

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