Diana Pfeffer Martin | Los Angeles | Hogan Lovells

Diana Pfeffer Martin

Counsel Global Regulatory

Martin Diana

Diana Pfeffer Martin
Martin Diana
  • Overview
  • Experience
  • Credentials
  • Insights and events

Diana Martin helps clients navigate complex environmental issues ranging from compliance counseling and permitting, to site remediation, enforcement defense and litigation, and transactional matters.

Diana has advised clients on a variety of environmental statutes including the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), the Resource Conservation and Recovery Act (RCRA), the Clean Water Act (CWA), and California's counterparts. She works with clients on permitting and compliance issues associated with federal, state, and local hazardous waste, hazardous material, solid waste, water quality, underground storage tank, and endangered species laws.

Diana's environmental regulatory and litigation experience spans numerous industries including energy, manufacturing, mining, agriculture, and food and beverage.

Prior to joining Hogan Lovells, Diana practiced environmental law at other firms and previously served as in-house counsel at a hazardous waste disposal company.

Representative experience

Defended the County of Maui in CWA claims brought by environmental groups seeking to impose NPDES permit requirements on discharges to groundwater that reach navigable waters.
Negotiate cleanup standards and site remediation agreements for impacted properties with private parties, insurers, and local, state, and federal regulatory agencies.
Advise industrial and municipal clients in civil and administrative actions brought by the U.S. EPA, the Regional Water Quality Control Boards, DTSC, and CUPA.
Defended petroleum clients against claims brought by the California Attorney General alleging non-compliance with underground storage tank requirements.
Advised clients on defense against product liability and other tort claims alleged by water utility districts.


  • J.D., University of San Diego, cum laude, 1990
  • B.S., University of Wisconsin-Madison, 1982
Bar admissions and qualifications
  • California
Court admissions
  • U.S. District Court, Northern District of California
  • U.S. District Court, Eastern District of California
  • U.S. District Court, Central District of California
  • U.S. District Court, Southern District of California
  • Member, Los Angeles County Bar Association
  • Member, American Bar Association