About M.C. Felts Company

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Margaret Felts is the best engineering witness and technical litigation analyst I have ever worked with…

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Margaret C. Felts has over 25 years of expert litigation consulting experience.

Margaret Felts serves as the lead technical consultant and expert witness for law firms, regulatory agencies, and private entities on energy, environmental and corporate fraud cases, concentrating her practice on behind-the-scene discovery, research, and strategy design to support the development of winning cases for regional and national clients.

In addition to a successful career in consulting that has spanned over 25 years, Ms Felts also held several industry positions.

During the 1990’s Felts was recruited to serve as Deputy Director of the California Department of Toxic Substances Control (DTSC), where she reorganized and managed the State Superfund program, including oversight of toxic waste cleanup of military bases.

During the 1980’s Felts was recruited by the Department of Defense to help open the first environmental office for the Department and went on to serve as Division Chief of Environmental Engineering at for the Department of Defense at McClellan AFB. In this position she was responsible for developing a program to bring the base into compliance with Federal, State and local environmental regulations.

Felts came to California from Texas when she was recruited by the California Energy Commission to fill an Energy Engineering position in the Fuels Office. Felts began her career as a Process Engineer for Amoco at the Yorktown, Virginia refinery, then for Celanese Plastics and Specialties in Texas in the production of oil and gas fracking chemicals.

Ms. Felts received her B.S. degree in Petroleum Engineering from Louisiana Tech University in 1977, her MS degree from LaSalle University in 1989, and her J.D. degree from University of Pacific’s McGeorge School of Law in 2000. Ms. Felts also holds a B.A. degree in Communications from Eckerd College. Washington State Bar #40507.

Areas of Expertise

Testimonials for M.C. Felts Company

Margaret Felts is the best engineering witness and technical litigation analyst I have ever worked with in 40 years of practice of law. Ms. Felts makes complex engineering concepts clear and understandable to laypersons, judges, and attorneys. She is direct and correct in her analyses, and is a superb witness both orally and in the preparation of written reports for the trier of fact. Margaret is hard working, fair and ethical, and intelligent. She works well with attorneys to develop a winning strategy for good cases.

B. Cagen

Over the past few years, I have worked closely with Ms. Felts on a complex government investigation of a very large public utility. During this time, Ms. Felts served multiple roles, including investigator, expert engineering witness, and technical writer and editor. In my personal view as an attorney, Ms. Felts’ extensive experience and understanding of administrative litigation proved invaluable. Ms. Felts provided top quality services in each of her roles. Her extensive engineering, management and legal training and background allowed me to confidently consult with her about the full range of issues within the case. I was part of a team that consistently relied upon her to deliver products that were par excellence, even under the tightest of deadlines.

D. Gruen

Our Areas of Expertise


I bring a unique perspective to any project because I have worked on all sides of environmental cases: Department of Defense (compliance with federal, state and local regulations), State (enforcement), Contractor for individual clients (compliance), consultant to reinsurance companies. As a Petroleum Engineer, I have an excellent understanding of organic chemistry, hydraulics, how oil, gas and chemicals move through the ground, and how they can be extracted. My career began in a refinery, where I became familiar with refining processes. I was also responsible for environmental compliance.


From combined experience at a refinery, a chemical plant and the California Energy Commission I became skilled at understanding underlying principles of energy supply, demand and pricing for oil gas and chemicals. I can read engineering plans and diagrams, interpret chemical data, reconstruct incidents from recorded process and instrumentation data, and can develop lines of questioning that will draw the desired responses from technical deponents. On several occasions I also investigated regulatory fraud, i.e. cases where regulations were manipulated and/or used to gain an unintended advantage to the loss of the general public or special rate payers.


In conjunction with a multi-faceted environmental insurance defense case, I spent 5 years researching historical archives throughout California to develop a documented record of the history of water supply, contamination, spills and regulation from 1890 to 1990. As a result, I am very knowledgeable about historical water laws and regulations as they were applied to real world situations. As a general contractor in the late 1980’s and early 1990’s, I worked for clients, including the State of California, to remove underground storage tanks, characterize groundwater contamination, install monitoring wells and clean up hazardous waste sites. As Deputy Director of the Department of Toxic Substances Control, I oversaw cleanup of all state superfund sites and negotiated the multi-agency coordinated effort resulting in the publication of guidance for site assessments, site characterization and site mitigation.​

Client History

Law Firms representing Lloyds of London Insurance Companies Insurance Defense

  • Aerojet Ground Water Contamination

  • Lockheed Soil & Groundwater Contamination

  • Raytheon Ground Water Contamination

  • Lodi Ground Water Contamination

CA Public Utilities Commission, DRA

  • Pacific Offshore Pipeline Company (POPCO) Gas Treatment Plant Startup Failure

  • Mohave Power Station Steam Pipe Failure

  • Montebello Underground Gas Storage Integrity

  • Playa Del Rey Underground Gas Storage Integrity

  • Helms Power Plant Startup Failure

Turner, Huguet, Brans & Adams

  • Chevron Pipeline Leak

CA Public Utilities Commission CPSD / Safety & Enforcement

  • San Bruno Gas Pipe Failure Investigation

  • California Energy Crisis / Enron Investigation


  • Pacific Offshore Pipeline Company (POPCO) Gas Rate

State of Nevada Attorney General’s Office

  • Mohave Power Station Steam Pipe Failure

Nova Group, Inc.

  • Fueling Pipeline Systems – environmental consulting

  • Facility Site environmental review

Dames & Moore

  • Impact on Electricity Consumption of Louisiana Refinery Modifications

(Additional client history may be requested with CV)

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If you have any questions regarding M.C. Felts Company or the expert witness testimony services we can provide, please contact us today!