Register of Experts

TRIAL CONSULTANTS - Expert Witness Services

Showing 3 Provider(s) found in Expert Witness Services

Evidence Solutions, Inc.

Ric Leutwyler, CEO

PO Box 42047
Tucson, AZ 85733
Phone: (866) 795-7166 Email: Website:


Evidence Solutions' Expert Witnesses provide consulting in Digital, Cell Phone, and Black Box/EDR/EMR Forensics, Trucking, Sports Injury, Accident Reconstruction, Law Enforcement, Greek Fraternity, Real Estate, Product Failure, Aviation, and more.

Langan Engineering & Environmental Services

Senior Consultant

Philip T. Tringale, PhD

135 Main Street
Suite 1500
San Francisco, CA 94105
Phone: (510) 874-7000 Email:


Dr. Tringale provides expert testimony for cases involving National Contingency Plan compliance, identification of contaminant sources, magnitude and extent of contamination, remedial cost estimates, and allocation of cost and responsibility.

Formal Education

Ph.D., Civil Engineering, University of California, Berkeley, 1982; M. Eng., Civil Engineering, University of California, Berkeley, 1979; M.S., Civil Engineering (Engineering Geology), Drexel University, Philadelphia, 1977

Registration and Licenses

Professional Engineer (P.E.) in California and New York

Previous/Current Position

Previous: Director of the Western Region; Current: Senior Consultant


American College of Forensic Examiners (Diplomat/Fellow), Chi Epsilon, National Civil Engineering Honor Society; Patent: Acoustic Penetrometer for Subsurface Soil Characterization

Prof. Affiliations

American Society of Civil Engineers; National Ground Water Association; International Society for Soil Mechanics and Foundation Engineering

Prior Expert

Landfill investigation and closure; Cleanup of 200-acre waterfront site; Investigation and remediation of a 5-mile-long plume of contaminated groundwater emanating from beneath a manufacturing facility; Investigation and remediation of soil and groundwater contaminated at a metal-parts fabrication plant; Site investigation and remediation program at an industrial site

Randy Sugarman

Managing Partner

Sugarman & Company LLP

505 Montgomery Street
11th Floor
San Francisco, CA 94111
Phone: (415) 395-7501 Alternate: (415) 314-6566 Fax: (415) 658-2858 Email: Website:


Forensic accountant. Expert witness testimony on management and financial issues. Accounting malpractice expert. Litigation support. Workout and bankruptcy consultant. Assumes management responsibilities, implements cost controls, negotiates with creditors, and supervises asset liquidation. Acts as a State Court Referee and Receiver, Federal Bankruptcy Trustee, and Examiner. Federal Court Special Master.



Formal Education

BA and MBA, Stanford University.

Previous/Current Position

Randy Sugarman, Managing Partner, founded Sugarman & Company LLP in 1977. Mr. Sugarman was previously associated with the national accounting firms of Main Hurdman (now KPMG Peat Marwick) and Kenneth Leventhal & Company (now Ernst & Young).

Prof. Affiliations

Association of Insolvency Accountants, Turnaround Management Association, American Bankruptcy Institute, National Association of Certified Fraud Examiners, California Bankruptcy Forum, American Institute of Certified Public Accountants, BASF and California Society of Certified Public Accountants. A founding member of the Turnaround Management Association, where he served on the Board of Directors. Mr. Sugarman also previously served on the Board of Directors of the Bay Area Bankruptcy Forum and on the California Society of Certified Public Accountants' Committee on Taxation.

Prior Expert

Expert witness testimony on management and financial issues in 60+ litigation cases. Appointed State Court Referee and Receiver, Federal Bankruptcy Trustee, Assignee for Benefit of Creditors or Examiner with over 50 years experience.

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