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Greg A. Christianson


As of November 24, 2014 practicing with Morgan, Lewis & Bockius LLP.

Greg A. Christianson’s practice focuses primarily on environmental litigation, including cost recovery matters, federal and state citizen suits, multiparty toxic tort actions, and other complex litigation matters.

Greg has defended private and public entities at sites throughout the U.S., including various federal and state Superfund sites. In his Superfund practice, Greg represents both individual clients and joint defense groups at a wide range of facilities, including mixed-use landfills and other industrial operations. He has also pursued CERCLA, RCRA and common law claims through litigation and in mediations, obtaining substantial funds for clients’ environmental cleanup work. In many of these cases, Greg has negotiated creative settlements, including multiparty federal and state consent decrees, and has successfully defended settlements against third-party challenges at the trial and appellate court levels, including the Ninth Circuit Court of Appeals. Greg has broad experience working with experts in the technical aspects of litigation, including contaminant fate and transport, identification of potentially responsible parties (PRPs), and the range of factors affecting multiparty cost allocation.

Greg has also defended clients in complex toxic tort litigation, including environmental class actions and mass joinder lawsuits. This work has included defense of personal injury, medical monitoring and property damage claims based on alleged groundwater contamination, surface water releases and air emissions.

In addition to his litigation practice, Greg regularly advises clients on effective means of avoiding liability and resolving disputes. Where appropriate, he has pursued cost-effective, cooperative solutions with regulators, property owners and PRPs to avoid the need for litigation.

Greg has been published on many topics, including trends in Superfund litigation and regulatory compliance matters. Greg is also a member of Bingham’s Diversity Committee.


  • Defended two multinational corporations in an environmental class action and mass joinder toxic tort lawsuit in Florida
  • Represented a public entity in pursuing an industrial operator for costs arising from perchlorate contamination
  • Defended a joint defense group at the former Cal Compact Landfill in California against claims by the site owner and state regulators
  • Represented oil industry clients pursuing and defending cost recovery claims at numerous sites
  • Pursued contribution claims against 40 waste generators for cleanup costs at a mixed-use landfill
  • Represented an industrial company and landowner in connection with sediment contamination at the Portland Harbor Superfund Site in Oregon
  • Defended an industrial operator against a Clean Air Act citizen suit based on alleged releases from a petroleum coke loading terminal
  • Advised clients in averting threatened litigation by non-governmental organizations under the Clean Water Act and Clean Air Act

Representative Clients

  • BP America Inc.
  • Cal Compact Defense Group
  • Chevron U.S.A. Inc.
  • Mitsui & Co. Ltd
  • Mitsui & Co. (U.S.A.) Inc.
  • Santa Clara Valley Water District
  • Shell Oil Company
  • Schnitzer Steel Industries Inc.
  • Valero Energy Corporation


  • Speaker, Finding the Optimal Regulatory Structure for HF in California, Law Seminars International’s Environmental Developments for Hydraulic Fracturing in California, Beverly Hills, Calif. (August 2014)
  • Speaker, Fracking in California: New Rules, New Challenges, The State Bar of California Real Property Law Section webinar (March 2014)
  • Presenter, Hydraulic Fracturing (Fracking) of Shale Formations in the United States — Opportunities and Risks, Mitsui & Co., Tokyo, Japan (April 2013)


  • American Bar Association
  • Los Angeles County Bar Association

Awards & Honors

  • Best Lawyers, Environmental Law (2014–2015)
  • Super Lawyers, Northern California (2014)
  • Super Lawyers, Southern California (2012–2013)
  • Super Lawyers, Southern California Rising Star (2005–2006)
  • Daily Princetonian Award for Service to Princeton University (1989)

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