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Jon-Erik W. Magnus


Executive Summary

Mr. Magnus is a member of the firm's Environmental Law and Retail Trade Industry Regulation Practice Groups.

Professional Qualifications

Mr. Magnus has extensive experience representing clients, from Fortune 500 companies to small family businesses, in environmental matters in litigation and in administrative proceedings. He has substantial experience representing clients in environmental claims arising under CERCLA, RCRA, California’s Porter-Cologne and Carpenter-Presley-Tanner Hazardous Substances Acts, in addition to claims under common law.

Mr. Magnus also has experience defending clients against directives and orders issued by California’s Regional Water Quality Boards and other local agencies, and also filing petitions challenging directives to the California State Water Resources Control Board. He has negotiated language and cleanup requirements in connection with Regional Board orders. Mr. Magnus has also overseen re-bidding contests to identify and select contractors to preform cost-effective investigations and remediation.

In addition to his experience involving environmental matters, Mr. Magnus also possesses wide-ranging civil litigation experience. He has represented clients in construction defect, toxic-tort law, professional liability, inverse condemnation, personal injury and wrongful death actions. He recently obtained summary judgment on behalf of a client, defendant, in a wrongful death matter.

Prior to becoming an attorney, Mr. Magnus spent ten years in the insurance industry handling environmental and toxic-tort claims, primarily in the western United States. He is very familiar with insurance coverage issues that arise in the context of environmental claims.

During law school, Mr. Magnus served as the Managing Editor of the Golden Gate University Environmental Law Journal. His student note for the law journal, Lyon’s Roar, Then a Whimper: The Demise of Broad Arranger Liability In the Ninth Circuit has been cited serval times including appellate briefing before the Ninth Circuit Court of Appeals and in Roger’s Environmental Law, a treatise on environmental issues.


J.D., Golden Gate University School of Law
B.A., Skidmore College

Bar Admissions


San Francisco, CA
  • Robert Dollar Building
    311 California Street, 10th Floor
    San Francisco, CA 94104-2695
  • Telephone: 415.956.2828
  • Fax: 415.956.6457
Washington, DC
  • Bowen Building
    875 15th Street, NW, Suite 725
    Washington, DC 20005-2243
  • Phone: 202.777.8950
  • Fax: 202.347.8429