Maureen F. Gorsen

Maureen F. Gorsen

Sidley Austin LLP

Recognized since 2013

Los Angeles, California

Practice Areas

Environmental Law

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Located in Sacramento, Maureen Gorsen focuses her practice on providing strategic public policy, litigation and regulatory advocacy and counsel to product manufacturers, brand owners, industrial facilities and landowners. She represents clients in enforcement defense and regulatory compliance issues before administrative agencies in Sacramento and numerous state capitals, and provides international permit and compliance counsel on environmental, product and supply chain regulation issues. With laws governing corporate social responsibility on the rise, Ms. Gorsen assists clients in developing their corporate policies to meet sustainability, chemical supply chain transparency, anti-slavery and human trafficking, conflict minerals and related statutes.

Ms. Gorsen is the former director of the California Department of Toxic Substances Control, where she directed the regulation of solid and hazardous waste and soil and water cleanups under CERCLA, RCRA, water and brownfields laws, as well as spearheaded the California Green Chemistry Initiative and the new laws governing toxics in products sold in California.

Ms. Gorsen is the former general counsel of the California Environmental Protection Agency, where she oversaw policies and activities that enforce California’s environmental laws. She is also the former general counsel for the California Natural Resources Agency. Ms. Gorsen has been ranked in Best Lawyers since 2013.


  • 1999 Avenue of the Stars, 17th Floor
    Los Angeles, CA 90067


  • Georgetown University , J.D., graduated 1993
  • University of Pennsylvania , BA, graduated 1986

Bar Admissions

  • California, The State Bar of California
  • Virginia, Virginia State Bar


  • ABA Administrative Law Committee - Member
  • ABA Pesticides, Toxics and Right-to-Know Committee - Member
  • California Manufacturers and Technology Association - Member
  • Consumer Specialty Products Association - Member
  • International Consumer Product Health and Safety Organization - Member
  • Interstate Chemicals Clearinghouse - Member
  • TechAmerica - Member

Sidley Austin LLP
Headquarters: Chicago, Illinois

233 The Best Lawyers in America® awards

83 Best Lawyers: Ones to Watch in America awards

Recognized in The Best Lawyers in America® 2022 for work in:

  • Environmental Law

Special Focus

  • COVID-19

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