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San Diego

T(619) 235-1550

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Education

  • J.D., University of Virginia School of Law

  • M.A., Georgetown University School of Foreign Service

  • B.S., Virginia Polytechnic Institute and State University

Bar Admissions

  • California

Court Admissions

  • Ninth Circuit and all California federal and state courts

Services

  • Environmental & Natural Resources

  • Land Use

  • Litigation & Counseling

Industries

  • Energy & Utilities

  • Real Estate

  • Manufacturing

  • Financial Services

  • Technology

Memberships

  • San Diego County Bar Association

  • Federal Bar Association

  • Association of Business Trial Lawyers, San Diego Chapter, Board Member (former)

Shawn T. Cobb

Partner

Clients rely on Shawn to represent them in high-stakes federal and state environmental litigation and regulatory enforcement actions. With more than 15 years of global law firm experience dedicated exclusively to complex environmental and civil litigation, Shawn is accomplished in all aspects of defending his clients’ legal interests both in and out of court.

Shawn has developed trusted, long-term relationships with some of the country’s largest and most innovative companies in industries ranging from industrial and chemical manufacturing to aerospace and defense, electronics recycling, and major residential and commercial development and construction. He aggressively advocates on behalf of his clients and measures his success, in part, by his ability to practically identify and efficiently mitigate the legal and business risks his clients face as a result of environmental lawsuits and enforcement actions.

With the proven ability to convince major environmental groups to walk away from threatened citizen suits, Shawn has resolved multi-jurisdictional environmental enforcement actions seeking record-setting civil penalties for less than the cost of defense and little to no adverse publicity, amicably settled contentious environmental business disputes while preserving assets and avoiding outside regulatory interference, and persuaded environmental prosecutors to decline to prosecute threatened criminal enforcement actions.

Shawn has advised his clients in a wide array of environmental matters brought under federal and state environmental laws including the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), the Resource Conservation and Recovery Act (RCRA), the Clean Air Act (CAA), and the Clean Water Act (CWA), and California counterparts such as the Hazardous Substances Account Act (HSAA), the Hazardous Waste Control Law (HWCL), the Aboveground Petroleum Storage Act (APSA), and the Porter-Cologne Water Quality Control Act. He has opposed and successfully resolved matters against government prosecutors in the Department of Justice; the Environmental Protection Agency; California’s Office of the Attorney General; numerous California District Attorneys’ offices; California cities, counties, municipalities, and quasi-governmental organizations; California’s State and Regional Water Boards and Air Districts; various non-governmental organizations; and many of the nation’s top law firms.

Prior to becoming a lawyer, Shawn worked as a private contractor on behalf of the United States Department of Defense and Intelligence Community, specializing in quantitative risk analysis and mitigation. He received numerous awards for this work, including a Certificate of Appreciation from the Deputy Director of Central Intelligence and the President’s Award from Northrop Grumman. Shawn also previously served as a Strategic Intelligence Analyst and as the Battalion Intelligence Officer of a Psychological Operations unit in the United States Army Reserve.

ACCOLADES

  • Northrop Grumman President’s Award
  • Certificate of Appreciation, Deputy Director of Central Intelligence

Shawn has developed trusted, long-term relationships with some of the country’s largest and most innovative companies in industries ranging from industrial and chemical manufacturing to aerospace and defense, electronics recycling, and major residential and commercial development and construction. He aggressively advocates on behalf of his clients and measures his success, in part, by his ability to practically identify and efficiently mitigate the legal and business risks his clients face as a result of environmental lawsuits and enforcement actions.

With the proven ability to convince major environmental groups to walk away from threatened citizen suits, Shawn has resolved multi-jurisdictional environmental enforcement actions seeking record-setting civil penalties for less than the cost of defense and little to no adverse publicity, amicably settled contentious environmental business disputes while preserving assets and avoiding outside regulatory interference, and persuaded environmental prosecutors to decline to prosecute threatened criminal enforcement actions.

Shawn has advised his clients in a wide array of environmental matters brought under federal and state environmental laws including the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), the Resource Conservation and Recovery Act (RCRA), the Clean Air Act (CAA), and the Clean Water Act (CWA), and California counterparts such as the Hazardous Substances Account Act (HSAA), the Hazardous Waste Control Law (HWCL), the Aboveground Petroleum Storage Act (APSA), and the Porter-Cologne Water Quality Control Act. He has opposed and successfully resolved matters against government prosecutors in the Department of Justice; the Environmental Protection Agency; California’s Office of the Attorney General; numerous California District Attorneys’ offices; California cities, counties, municipalities, and quasi-governmental organizations; California’s State and Regional Water Boards and Air Districts; various non-governmental organizations; and many of the nation’s top law firms.

Prior to becoming a lawyer, Shawn worked as a private contractor on behalf of the United States Department of Defense and Intelligence Community, specializing in quantitative risk analysis and mitigation. He received numerous awards for this work, including a Certificate of Appreciation from the Deputy Director of Central Intelligence and the President’s Award from Northrop Grumman. Shawn also previously served as a Strategic Intelligence Analyst and as the Battalion Intelligence Officer of a Psychological Operations unit in the United States Army Reserve.

ACCOLADES

  • Northrop Grumman President’s Award
  • Certificate of Appreciation, Deputy Director of Central Intelligence
  • Obtained complete defense verdicts against 14 of 17 plaintiffs following 4½-month financial fraud jury trial on behalf of the country’s largest title and escrow provider.
  • Successfully resolved multi-decade land use dispute on behalf of municipality at no cost to client following nine-figure adverse jury verdict.
  • Persuaded California environmental authorities to decline to prosecute alleged criminal violations of environmental regulations relating to sensitive fish species and habitats on behalf of a major, publicly-listed REIT.
  • Negotiating settlement of the largest GOCO CERCLA action in history on behalf of major aerospace and defense contractor in connection with the development and production of naval aircraft during World War II.
  • Successfully resolved partnership dispute with allegations of criminal misconduct—and parallel insurance dispute—on behalf of region’s leading provider of electronic waste and recycling services, resulting in an insurance-funded cost-of-defense settlement.
  • Negotiating settlement of alleged Clean Air Act violations with asserted civil penalties that are the largest of their type in history on behalf of major, publicly listed REIT.
  • Secured settlement of threatened nine-figure, state-wide regulatory enforcement action by coalition of California District Attorneys against Fortune 50 company for significantly less than the cost of defense, and without any injunction or admission of wrongdoing.
  • Representing successors-in-interest to former chemical manufacturer in connection with efforts across multiple states to recover for alleged environmental damage under various state law tort claims.
  • Negotiating settlement of multi-party CERCLA action on behalf of successor-in-interest to certain paper manufacturing facilities in context of predecessor bankruptcy.
  • Secured pre-litigation settlement of enterprise-threatening partnership dispute on behalf of independent wind power generator.
  • Obtained complete relief, including title to real property, on behalf of client in dispute involving allegations of financial elder abuse.
  • Representing major aerospace and defense contractor in CERCLA mediation against the United States concerning legacy environmental costs associated with the development and production of advanced stealth aircraft.
  • Represented local company in investigation and criminal referral in connection with multi-year insider financial fraud.
  • Obtained dismissal with prejudice of contract action by business partner against medical device company.
  • Representing major industrial manufacturer in CERCLA action concerning aerial emission of lead from historic manufacturing operations.
  • Representing major industrial manufacturer in defense of threatened, multi-jurisdictional Hazardous Waste Control Law action brought by government prosecutors and regulators.
  • Representing major provider of consumer electronic security services in defense of threatened, multi-jurisdictional Hazardous Waste Control Law action brought by California’s Office of the Attorney General.
  • Environmental Litigation Trends & Insights

    Executive Environmental Summit
    San Diego, CA

    9.12.23

  • California Environmental Law & Policy Update

    8.08.25

  • California Environmental Law & Policy Update

    8.01.25

  • California Environmental Law & Policy Update

    7.18.25

  • California Environmental Law & Policy Update

    7.11.25

  • California Environmental Law & Policy Update

    7.03.25

  • California Environmental Law & Policy Update

    6.27.25

  • Air District Asbestos Rule Will Affect Demolition Activities for Facilities Damaged by the Los Angeles Wildfires

    6.18.25

  • Beyond Sackett: California’s Expanding Role in Wetlands Permitting and the Future of “Waters of the State”

    6.18.25

  • California’s New Climate-Related Disclosure Laws: Requirements, Compliance Costs, and Deadlines for Impacted Businesses

    6.18.25

  • Citizen Suit Enforcement Under the Industrial General Permit: How Businesses Can Avoid Substantial Costs Associated with Notice Letters

    6.18.25

  • California Environmental Law & Policy Update

    6.13.25

  • California Environmental Law & Policy Update

    6.06.25

  • Supreme Court Says EPA has no Authority to Impose “End-Result” Requirements in Clean Water Act Permits

    3.06.25

  • California Withdraws Clean Air Act Waiver Requests for Vehicle Emissions Standards

    1.16.25

  • California's Construction General Permit and Industrial General Permit – 2024/2025 Annual Update

    9.11.24

  • Chevron Deference No Longer – Supreme Court Overturns Cornerstone of Administrative Law

    6.28.24

  • A New Era for ESG Policy

    5.23.24

  • Rain or Shine, Changes to California’s Construction General Permit Are on the Horizon

    8.08.23

  • Headed to Court? SEC's Proposed Climate- Disclosure Rules Will Likely Face Legal Challenge

    Shawn T. Cobb in The National Law Journal

    Press Mention

    5.09.23

  • 2023 Land Use, Environmental, & Natural Resources Update

    5.01.23

  • ESG on the Rise

    5.01.23

  • Permittees Under the Construction General Permit and Industrial General Permit Must Take Steps Now to Ensure Compliance

    8.23.22

  • San Diego Developers and Owners Should be Aware of Changes in Asbestos Enforcement Behavior

    3.16.22

  • Allen Matkins Continues its Lateral Hiring Push by Welcoming Environmental Litigation Partner Shawn T. Cobb to its San Diego Office

    Press Release

    10.04.21

  • California Environmental Law & Policy Update

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