Kenneth Sansone

  • 415.625.1733

Ken is a partner atSL Environmental who focuses his practice on complex environmental matters.  Ken has nearly two decades of experience in handling sophisticated civil and criminal litigation at both the trial and appellate level in state and federal court.

Prior to joining SL Environmental, Ken served as an assistant attorney general for the State of New Hampshire, representing state officials, agencies, and employees, and the state itself, in a wide range of disputes.  Ken argued several cases before the New Hampshire Supreme Court, and regularly appeared for the State in trial court and before administrative agencies.  Ken also routinely consulted on appeals and other complex litigation handled by the office, particularly on matters involving difficult issues of federal civil procedure and administrative law.

Ken also served as the senior law clerk to the Honorable Joseph N. Laplante, Chief Judge of the United States District Court for the District of New Hampshire.  Ken joined the Chief Judge in resolving, by trial, motion practice, or mediation, hundreds of civil cases, including many complicated products liability, intellectual property, and constitutional matters.    Ken also served as a law clerk to the Honorable Jeffrey R. Howard of the United States Court of Appeals for the First Circuit, in Boston, and the Hon. Joseph A. DiClerico, Jr., of the United States District Court for the District of New Hampshire.  Ken began his career at Goulston & Storrs, a large Boston law firm, where he handled a variety of complex commercial cases.

Ken received his law degree from New York University School of Law, and his bachelor’s degree, magna cum laude with highest distinction, from Duke University, where he was an alternate captain of the men’s ice hockey team.  He still enjoys playing hockey, as well as running, hiking, crossword puzzles, and trivia (he was a Jeopardy! champion in 2016).


Recent Speaking Engagements

Association of Groundwater Associations-American Groundwater Trust, Annual Conference, Ontario, CA, “Shifting Groundwater Contamination Costs from Ratepayers to Polluters,” February 2020

Groundwater Resources Association, Western Groundwater Conference, Sacramento, CA, “Hot Topics in Groundwater Law – PFOA, PFOS and Other Groundwater Quality Concerns,” September 2019

Groundwater Protection Council, Annual Forum, Oklahoma City, OK, Emerging Groundwater Contaminants Session, “Stepping on the Train, or in Front of It? Proactive Approaches to PFAS Contaminants,” September 2019

American Groundwater Trust, Central Valley Water Quality Workshop, Fresno, CA, and Bakersfield, CA, “Making Polluters Pay for Treatment Costs,” August 2019

American Water Works Association, Annual Conference and Exposition (ACE 2019), Denver, CO, Moderator, “The Legal Landscape for PFOA-PFOS:  What You Need to Know Now,” June 2019

California Water Association, Annual Conference, Monterey, CA, “Making Polluters Pay for Treatment Costs,” October 2018

American Water Works Association, Annual Conference and Exposition (ACE 2018), Las Vegas, NV, Legal Aspects of Water Infrastructure Funding Session, “Insights About How to Hold Polluters Responsible for Contamination,” June 2018