Skip to content Kristin N. Reyna DeHart


San Diego
101 W. Broadway
Suite 2000
San Diego, CA 92101

Los Angeles
633 West Fifth Street
52nd Floor
Los Angeles, CA 90071

5 Park Plaza
Suite 1100
Irvine, CA 92614

5901 Priestly Drive
Suite 308
Carlsbad, CA 92008


J.D., magna cum laude, Tulane University School of Law, 2000

  • Order of the Coif
  • Certificate of specialization in Environmental Law
  • Senior Managing Editor, Tulane Environmental Law Journal

B.A., magna cum laude, Political Science, Pepperdine University, 1995


Best Lawyers in America® distinction in Mass Tort Litigation / Class Actions - Defendants (2024)

Leader of Influence in Law, San Diego Business Journal (2023)


Kristin Reyna DeHart serves as the Assistant Managing Partner of grsm’s San Diego office. She is co-chair of the firm's Environmental practice group and a member of the Toxic Tort practice group, specializing in the defense of complex environmental claims, toxic tort and product liability claims. She represents a wide range of entities in her practice, including corporations, manufacturers, product suppliers, industrial operations, property owners, insurance companies, municipalities, homeowners’ associations, construction companies and environmental abatement companies. She can handle environmental claims which range from one site to state-wide. The matters which she has handled have dealt with such issues as soil, groundwater, well and sediment contamination by various contaminants, storm water issues, mold contamination, asbestos contamination, crop loss claims, and environmental, occupational and industrial exposures to myriad chemicals and toxic substances. She has also worked on a diverse range of product liability matters, and food and water-bourne illness matters.

Kristin also counsels clients regarding environmental compliance issues outside the litigation context, including regarding property contamination, waste generation, handling and disposal, and recycling/reuse programs. She regularly assists clients with environmental investigations and removal/remedial actions on their properties including representing clients in communications and negotiations with Regional Water Quality Control Boards, the Department of Toxic Substances Control and the Environmental Protection Agency. Kristin also regularly performs environmental due diligence work in real property and business transactions including mergers and acquisitions.

Kristin has both trial and appellate experience with toxic tort/personal injury exposure claims and complex environmental soil, groundwater, sediment and well contamination property damage claims. Both her education and practice have given her significant knowledge of the key Federal and California environmental statutes, including the Comprehensive Environmental Response, Compensation & Liability Act (CERCLA), the Hazardous Substance Account Act (HSAA/California Superfund), the Clean Water Act (CWA), the Resource, Conservation & Recovery Act (RCRA), the California Land Reuse and Revitalization Act (CLRRA), the Polanco Redevelopment Act, and the Porter-Cologne Water Quality Act.

Kristin sits on the Steering Committee of the firm-wide Environmental & Toxic Tort practice group and leads the Environmental subgroup of this practice. She is also the San Diego office representative to the firm-wide Diversity Committee and active in the firm’s Women’s Initiative.

In the community, Kristin is the Vice Chair of the Board of Trustees of Trinity United Methodist Church, one of the oldest churches in San Diego.


  • California
  • U.S. District Courts, California
  • U.S. Court of Appeals, Ninth Circuit


  • San Diego County Bar Association
Publications & Presentations