Shannon Morrissey

Shannon Morrissey focuses her practice on energy, environment and natural resources matters, and represents clients facing complex regulatory and government affairs. She has assisted clients in technology, real estate, mining, airline and other industries—including major industrial corporations, manufacturers, and oil and gas companies, as well as major residential and commercial developers—on a wide variety of permitting, compliance, enforcement and litigation matters. Ms. Morrissey has also worked on due diligence projects for various clients, including solar and mining companies.

Ms. Morrissey was previously an associate at Arnold & Porter Kaye Scholer LLP, and an associate, law clerk and summer associate at Stoel Rives LLP. While pursuing her legal education, Ms. Morrissey was an extern in the Office of Chief Counsel for the State Water Resources Control Board and in the Public Rights Division for the California Attorney General. She also worked at the Southern Environmental Law Center in Birmingham, Alabama.

Professional Activities

Ms. Morrissey is on the executive committee for the Barrister's Environmental, Land Use and Real Estate Section of the Bar Association of San Francisco. She is also a member of the Environmental Law Institute’s Women in Environmental Law & Leadership San Francisco Steering Committee


  • Ms. Morrissey’s experience includes representing clients facing Clean Water Act citizen suits, hazardous waste investigations and eminent domain litigation. She has experience with the Clean Water Act, Clean Air Act, CERCLA, the California Environmental Quality Act and the California Mitigation Fee Act.

    Ms. Morrissey has also worked closely with agency representatives from the California Department of Toxic Substances Control, the California State Water Control Board and various regional water boards, and California District Attorney Offices to reach agreement on compliance and enforcement matters.

    Recent representative matters include:

    • Assessed (and, with a team at the firm, is currently closely tracking) President Biden’s climate change policies, including developing issues relating to Environmental, Social, and Corporate Governance (ESG) disclosures, emissions reductions strategies, and environmental justice initiatives.
    • Counseled several major Bay Area and national companies on compliance with state and local public health orders, business operational requirements, and related OSHA mandates during the COVID-19 pandemic, including during the shelter in place orders issued across the country.
    • Advised semiconductor manufacturer on recycling exemptions under RCRA hazardous waste regulations.
    • Defended retail client in hazardous waste enforcement action brought by California Attorney General and various county District Attorneys.
    • Represented a major residential and commercial developer in obtaining approvals for remediation and redevelopment construction site. Issues at the site included vapor intrusion mitigation and compliance with deed restrictions.
    • Represented a corporate client in connection with deed restrictions and a soil management plan at a redevelopment site. Successfully petitioned Regional Water Board to reduce mandates imposed under Water Code section 13267 Letter.
    • Represented client in major transaction and assisted with environmental diligence and analysis for redevelopment. Issues at the site included vapor intrusion mitigation and compliance with land use covenants.
    • Negotiated various asset and stock purchase agreements and merger agreements and conducted environmental diligence for transactions on behalf of technology, real estate, mining, airline and other corporations.
    • Represented major industrial manufacturer in administrative enforcement proceeding before the California South Coast Air Quality Management District and successfully negotiated air emissions curtailment agreement.
    • Advised large oil and gas client on environmental liability issues in bankruptcy proceeding and represented client in filings before the California State Lands Commission related to assets in bankruptcy.
    • Negotiated diverse land use agreements including development agreement with local government agency and advised various corporations, including solar developer, on zoning, land use and permitting issues throughout California.
    • Successfully represented pro bono clients in guardianship proceeding, obtained approval for Special Immigrant Juvenile Status in federal immigration proceeding and received approval for Lawful Permanent Residence status.


Insights & News


  • Education

    • JD, Environmental Law Certificate, University of California, Davis School of Law, 2015

      Witkin Award, Administrative Law

      Senior Articles Editor, UC Davis Law Review

      Summer Grant Recipient, King Hall Legal Foundation

    • BA, Criminology, Minor in Environmental Studies, University of Florida, 2012

      summa cum laude Dean’s List, W.W. Massey Presidential Scholarship, University Scholars Program
  • Admissions

    • California

    • US Court of Appeals for the Ninth Circuit

    • US District Court for the Central District of California

    • US District Court for the Eastern District of California

    • US District Court for the Northern District of California