Margaret's environmental practice focuses primarily on regulatory interface and compliance issues, remediation and cost recovery, environmental insurance coverage and complex environmental litigation.
She represents both private and public sector clients including cities, counties, redevelopment agencies and special districts.

Margaret has over 25 years experience negotiating regulatory cleanup and compliance standards with environmental regulatory agencies including the State and Regional Water Quality Control Boards, the Department of Toxic Substances Control, the Integrated Waste Management Board, the State Department of Fish & Game, and the United States Fish & Wildlife Agency in addition to local regulatory oversight agencies. She has successfully represented her public sector clients in multiparty actions and has been instrumental in resolving complex litigation involving negotiations with responsible parties, regulators and insurance carriers.

Margaret has also been successful in locating and recreating valuable historical general liability insurance policies for her clients which have led to the recovery of hundreds of thousands of dollars in defense and indemnity proceeds as a result of her expertise in insurance archaeology and insurance coverage. In 2005 as Amicus Curiae on behalf of the California State Association of Counties she authored a brief to the California Supreme Court addressing pivotal issues relating to environmental insurance coverage on behalf of insureds.

Margaret has also been active in drafting state environmental legislation and working with local and state officials in the legislative process including drafting substantive revisions to the Polanco Redevelopment Act, (California Health & Safety Code § 33459 et. seq.).

Margaret is known for her no nonsense practical approach to resolving complex environmental problems. She is admitted to practice in all California Courts and the United States District Court for the Southern, Central, Eastern and Northern Districts of California.