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Hanson Bridgett LLP

Samir J. Abdelnour

Samir J. Abdelnour



  • Environmental & Natural Resources
  • Environmental & Natural Resources
  • Environment & Natural Resources
  • Environmental and Natural Resources

WSG Practice Industries


Hanson Bridgett LLP
California, U.S.A.


Samir's practice focuses on environmental litigation, advice, and counseling. He routinely advises and represents public and private entities, as well as individuals, in regulatory enforcement actions, contaminated property remediation, land use entitlement and permit proceedings, water rights, product labeling, and litigation involving natural resources and other environmental issues. Samir’s practice 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”). Samir has extensive experience litigating environmental matters in federal and state courts, as well as through private arbitration. Samir also has experience litigating general commercial and business disputes.

Bar Admissions

  • California
  • 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


J.D., cum laude, University of California, Hastings College of the Law (2010)
B.A., with honors, The University of Texas at Austin (1997)
Areas of Practice

Environment & Natural Resources | Environmental & Natural Resources | Environmental & Natural Resources | Environmental and Natural Resources | Environmental Law | Government | Litigation & Dispute Resolution | Litigation & Dispute Resolution | Water Law

Professional Career

Significant Accomplishments

Represented a client and secured a settlement of a Cal Department of Pesticide Regulation enforcement action for selling unregistered antibacterial sanitizing wipes.

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

Litigated agency approvals for development projects under CEQA

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

Defended technology company in Cal OSHA investigation

Evaluated claims asserted by the EPA regarding liability for remediation of a former smelting facility and negotiating settlement with the EPA and other potentially responsible parties

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

Evaluated and responding to claims asserted by successor or neighboring property owners regarding alleged soil and groundwater contamination

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

Analyzed requirements of several states regarding storm water discharges and permits for air transportation facilities

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

Defended potential civil and criminal liability for hazardous waste discharge alleged by state regulatory agency at recycling facility


A Role for Water Treatment Systems in Fighting the COVID-19 Pandemic
Hanson Bridgett LLP, May 2020

Key Points Monitoring the movement of the COVID-19 virus in untreated wastewater may provide useful information in tracking the spread of the disease. Current methods for treating wastewater supplies appear to be sufficient to protect against further spread of COVID-19. In the absence of widespread testing and contact tracing, could untreated wastewater hold the key to tracking the spread of COVID-19? Increasingly, the answer appears promising...

Additional Articles

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)


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A Hanson Bridgett blog updating on current Appellate news/events.

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