Samir Abdelnour

Samir J. Abdelnour

Partner - Director of Pro Bono and Social Impact

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Environmental and Natural Resources
Environmental and Natural Resources
San Francisco

As Hanson Bridgett's Director of Pro Bono and Social Impact, Samir oversees the firm's pro bono, community service, and charitable giving programs. Samir also works with outside organizations and internal firm stakeholders to advance the firm's environmental sustainability and impact investing goals. Samir is a member of the Association of Pro Bono Counsel and the Executive Committee of the California Lawyers Association Environmental Law Section. He is also a member of the firm's Pro Bono Committee, Recruiting Committee, and RACE Task Force.

Samir's legal practice focuses on environmental litigation, advice, and counseling in regulatory enforcement actions, contaminated property remediation, land use entitlement and permit proceedings, water rights, product labeling, and state and federal court litigation involving natural resources and other environmental issues. Samir’s environmental law expertise includes a broad range of state and federal environmental and land use laws, including the Clean Water Act (CWA), Comprehensive Environmental Response, Compensation and Liability Act (CERCLA), Resource Conservation and Recovery Act (RCRA), National Environmental Policy Act (NEPA), California Environmental Quality Act (CEQA), Porter-Cologne Water Quality Control Act, Carpenter-Presley-Tanner Hazardous Substance Account Act, and California’s Safe Drinking Water and Toxic Enforcement Act of 1986 (“Proposition 65”).

Representative Work

Represented global manufacturing company in 7-week arbitration to allocate investigation and remediation costs at industrial property regulated under RCRA and CERCLA

Represented federal contractor conducting Superfund site remediation in SF Bay Area

Defended public agency in CWA enforcement action initiated by environmental non-profit organization

Defended multinational financial services company in capacity as trustee managing environmental investigation and remediation of contaminated property

Resolved California district attorney investigation regarding hazardous materials management and hazardous waste disposal for Fortune 500 company

Investigated historical domestic uranium mining and evaluating potential liability arising out of ownership or operation of abandoned mines

Defended toxic tort mass action alleging neighborhood-wide exposure to hexavalent chromium and related damages by thousands of plaintiffs

Defended civil enforcement action by state agency regarding discharge of hazardous waste at airport facility

Defended numerous manufacturers, distributors and retailers of consumer products in California in Proposition 65 private enforcement actions

Litigated historical water rights threatened by government actions in California, Nevada and New Mexico


"Join Us as a Leader in the 'Business as a Force for Good' Movement," The Global Legal Post (May 2022)

San Francisco Court Declines to Halt Enforcement of Cal/OSHA Emergency Temporary Standard RegulationsLabor & Employment Law Alert (February 2021)

"A Role for Water Treatment Systems in Fighting the COVID-19 Pandemic," co-author, Environmental Law Alert (May 2020)

"New EPA Guidance for Site Field Work Decisions Impacted by COVID-19," co-author, Environmental Law Alert (April 2020)

"Complying with Environmental Requirements During COVID-19," Environmental Law Alert (March 2020)

"Clean Up On Aisle 3: How to Avoid Hazardous Waste Enforcement," co-author, Waste Dive (September 2018)

"Expert Opinion: Hazardous waste compliance is different in California," co-author, Chain Store Age (March 2018)

"Attorney General Amends Settlement Guidelines in Proposition 65 Regulations," Proposition 65 Law Alert (October 2016) 

"California Adopts Long-Pending Modifications to Proposition 65 'Clear and Reasonable' Warning Regulations," co-author, Proposition 65 Law Alert (September 2016)

"California Supreme Court Upholds Pre-condemnation Entry and Testing Law with Addition of Jury Option," Water Law Alert (July 2016)

"Comply and Conserve," co-author, SF Apartment Magazine (May 2016)

"State Water Board Reinstates Monthly Reporting Requirement on Diverters in Sacramento and San Joaquin River Watersheds," Water Law Alert (March 2016)

"State Water Board Extends Emergency Water Conservation Regulation," Water Law Alert (February 2016)

"State Water Board Adopts Water Use Reporting and Measurement Regulations," Water Law Alert (January 2016)

"Drought State of Emergency: Mandatory Water Use Reduction Extended to October 2016," Water Law Alert (November 2015)

"Competing TSCA Reform Bills: A Break in Partisan Fever?" co-author, Corporate Counsel (May 2015)

"New Proposition 65 Regulations Being Considered in California," co-author, Natural Products Insider (March 2015)

"Court Signals Mixed on NEPA Analysis," American Oil & Gas Reporter (April 2014)

"Will 2014 Finally Be the Year for Long-Awaited CEQA Reform?," co-author, Daily Journal (January 2014)

See All Publications

Blog Posts

See All Blog Posts


“The Ethics of Pro Bono Practice,” Hanson Bridgett MCLE Marathon (January 2022)

“Pro Bono During the Pandemic,” Law Practice Today Roundtable (November 2021)

"The Transformation of EHS: Operating in a Post-COVID World," co-presenter, Mapistry's EHS Virtual Summit (August 2020)

"Health, Safety and Environmental Considerations for Employers," co-presenter, Hanson Bridgett Labor & Employment Mid-Year Briefing (June 2020)

"Coffee and Compliance: Environmental Compliance Requirements During COVID-19," co-panelist, Mapistry Webinar (April 2020)

"Hazardous Materials Violations," co-speaker, Mapistry's Pollution Prevention Summit (October 2019)

"Environmental Arbitration: Trial Light or Trial 2.0?," co-speaker, The Bar Association of San Francisco (May 2019)

"Hazardous Waste Compliance Programs: What Works and What is Trouble, the Legal Perspective," Pollution Prevention Summit (September 2018)

"California's Proposition 65: Regulations & Reality," PMI Webinar (March 2018)

"Technical Track Panel," co-speaker, 2017 PMI Conference (November 2017)

"Environmental Law Basics: Understanding Hazardous Waste," moderator, The Bar Association of San Francisco (November 2017)

See All Presentations


"Why Hanson Bridgett Prizes B-Corp Status and Being Green," Law360 Pulse (April 2022)

"Hanson Bridgett gets 6th B Corp certification," Daily Journal (April 2022)

Foundation Partners Lead the Way on Access to Justice,” California Lawyers Foundation Legal Perspectives (December 2021)

"Hanson Bridgett Creates Head of Pro Bono, Social Impact," Law360 Pulse (August 2021)

"Unexplored Territory.' Trump Jumps into NEPA Legal Limbo," E&E News (June 2020)

"EGEB: Trump Suspends Environmental Reviews, Putting Americans’ Lives Further at Risk," Electrek (June 2020)

"VW Banks on Federal Shield to Beat States' Emissions Suits," Law360 (December 2018)


California Lawyers Association, Wiley W. Manuel Pro Bono Legal Services Award (2021)

Judicial Clerkships

Judicial Extern for the Honorable Judge James Larson (Ret.), U.S. District Court for the Northern District of California

Academic Distinction

Hastings Constitutional Law Quarterly, Executive Symposium Editor

Pro Bono Publico Award for Public Service, as Public Benefits Advocate with General Assistance Advocacy Project (2007-2009)

CALI & Witkin Awards, Film & the Law Writing Seminar


J.D., cum laude, University of California, Hastings College of the Law (2010)

B.A., with honors, The University of Texas at Austin (1997)

Admissions And Courts


U.S. Court of Appeals for the Ninth Circuit

U.S. District Court for the Central District of California

U.S. District Court for the Eastern District of California

U.S. District Court for the Northern District of California

U.S. District Court for the Southern District of California

San Francisco

415-995-5869 Direct Phone
415-995-3581 Fax

Email Attorney


Firm Leadership

Director of Pro Bono & Social Impact