Physical Evidence Expert Witness

Provides Opinion & Testimony In:

Forensic Examination, Physical Evidence Examination, Crime Scene Investigation, Crime Scene Reconstruction, Bloodstain Pattern Analysis, Death Scene Investigation, Evidence Presentation, Display Techniques, Latent Print Comparison, Footwear Impression Comprison, Physical Matches, Impression Toolmarks, Presumptive Blood, Seminal Fluid, Drug Examination, Digital Imaging Enhancement, Digital Forensic Photography, Digital Photomicography, Bloodstain Pattern Examiner, Video Analysis, Glass Examination, Microscopy, Firearms,video tape authentication


Thirty-two years experience in forensic examination. Strong technical experience in all phases of crime scene, physical evidence investigation and expert witness testimony.  Work cooperatively with federal, state and local criminal justice agencies throughout the western United States. Provide private forensic identification and analysis in civil and criminal cases.


2006 – Present
Physical Evidence Consultant
Review and analysis of physical evidence in criminal and civil cases
Expert Witness Testimony

2005 – Present
City of Coburg, Oregon
City Administrator (part-time)
Responsible for supervision of city operations and personnel issues

2005 – May 2006
Lane County District Attorney, Eugene, Oregon
Deputy Medical Examiner (part-time)
Responsible for on-call death scene investigation in compliance with Oregon State Statutes

1978 – 2005
Eugene Police Department, Eugene, Oregon
Forensic Analyst (retired)
Responsible for major crime scene investigations, evidence identification and examination. Function as the technical representative to the Western Identification Network (WIN) Automated Fingerprint Identification System (AFIS)

Developed examination skills in latent print identification, footwear
comparison, bloodstain pattern analysis, presumptive chemical tests, digital imaging, computerized reconstruction techniques, crime scene reconstruction, tool mark and firearm examination/comparison

Qualified as an expert witness in circuit courts of Oregon, Washington, California and Utah, federal court in Oregon and Fort Lewis, Washington.

Served in an extended capacity as acting Supervisor of the Forensic Evidence and Property Control Units.


B. S. (Criminology), Indiana State University, Terre Haute, Indiana – 1973

Undergraduate classes in chemistry, biology, computer science, criminalistics and photography, University of Oregon and Lane Community College,
Eugene, Oregon -1975 through 1983

M. S. (Business Management), Marylhurst College, Marylhurst, Oregon-1987

Professional Development and Civic Activities

Certified Bloodstain Pattern Examiner, 0049, by the International Association for Identification (2010)

Licensed Private Investigator by State of Oregon, DPSST (2010)

State of Oregon Medical Examiner’s Office, Deputy Medical Examiner Training (2005)

Certified Senior Crime Scene Analyst by the International Association for Identification (1990-95, 2004-07)

Certified Instructor, Oregon Board of Public Safety Standards and Training (1992-1994, 2004)

(Forensics, Crime Scene Investigation, Police Photography, Bloodstain Analysis, Latent Print
Processing and Identification)

Developed and implemented a computerized bloodstain pattern analysis program the first ever developed for this type of physical evidence.

City of Coburg, Oregon Councilor 1997-1999 and 2000-2005, Mayor 2000

Charter member, First Secretary Treasurer and former Educational Committee Chair, Western Regional Vice President, Ad hoc Committee member, Current Chair of the Certification Committee, International Association of Bloodstain Pattern Analysts

IAI – Past Member, Bloodstain Pattern Identification Committee

Specialized Training and Practical Work Experience

Crime scene reconstruction / Bloodstain pattern analysis / Shooting reconstruction
Forensic Ridgeology
Latent print processing, comparison and examination
Automated Fingerprint Identification system (AFIS) operation and technical support
Footwear evidence examination
Video analysis
Presumptive blood test including species determination Firearms and tool mark / pattern examination Microscopy (general)
Photo microscopy
Microscopical examination and identification of explosives Microcrystalline and spot plate test for controlled substances Digital photography and enhancement techniques
Police photography
Physical matches / Impression tool marks
Serial number restoration
Trace Evidence collection and examination (hair and fiber) Glass examination
Sexual assault evidence collection, examination and identification
Evidence packaging, integrity and custody
Expert witness testimony / Evidence presentation methodology


American Academy of Forensic Sciences
International Association for Identification
International Association of Bloodstain Pattern Analysts
Association for Crime Scene Reconstruction


Available upon request.

Consulting and Training

The following is a list of agencies and associations that have requested my assistance in crime scene investigation/bloodstain pattern interpretation, forensic examination or have invited me to teach.

United States Army, Fort Lewis, Washington
(crime scene and bloodstain pattern analysis)

United States Attorney’s Office, Eugene, Oregon
(digital photography, video analysis, latent print identification)

Washington State Coroner and Medical Examiner Association
(Instructor-bloodstain pattern analysis)

Yavapai County Attorney’s Office, Prescott, Arizona
(Consultant-bloodstain pattern analysis)

Federal Bureau of Investigation, Washington, D.C.
(Consultant, IAFIS, latent tracing)

Lockheed Martin Corporation, Orlando, Florida
(Consultant, IAFIS, latent tracing)

Oregon State Council of Perioperative Nurses
(Instructor-evidence collection, preservation and bloodstain analysis)

Oregon State Police Forensics Laboratory, Springfield, Oregon
(Consultant-bloodstain pattern analysis, Instructor-shoe print collection and photography)

Oregon State Police Forensics Laboratory, Coos Bay, Oregon
(Consultant-bloodstain pattern analysis)

Lane County Sheriff’sOffice, Eugene, Oregon
(Consultant-bloodstain pattern analysis and digital photography)

Lane County Medical Examiner’s Office
(Forensic photography, bloodstain pattern analysis, fingerprints, digital facial reconstruction)

Lane County District Attorney, Eugene, Oregon
(Consultant-bloodstain pattern analysis, evidence presentation methodology)

Coos County District Attorney, Coquille, Oregon
(Consultant-bloodstain pattern analysis)

Public Defenders Services of Lane County

Umpqua Valley Public Defenders Office

Reserve Officer Program, Lane County Oregon

Recruit Training Program, Eugene Police

Lane Community College, Eugene, Oregon
(Guest Lecturer-forensics, bloodstain pattern analysis)

Linn- Benton Community College, Albany, Oregon
(Guest Lecturer-forensics, bloodstain pattern analysis)

University of Oregon, Department of Chemistry
(Guest Lecturer-forensics, bloodstain pattern analysis)

Bush Veterinary Animal Hospital, Eugene, Oregon
(Animal abuse-gun shot wound examination)

Lane Community College Cottage Grove, Oregon
(Instructor-ridgeology, bloodstain pattern analysis)

Oregon Association of Licensed Investigators
(Instructor-ridgeology, bloodstain pattern analysis)

Oregon Criminal Defense Lawyers Association

Expert Testimony

Bloodstain pattern analysis and crime scene reconstruction
Shooting reconstruction (bullet flight path determination and documentation) Crime scene investigation
Latent print identification and processing
Footwear impression identification and processing
Death Investigation
Serial number restoration
Firearms operation (test firing) and identification
Presumptive blood test Marijuana identification Digital photography
Evidence integrity and chain of custody procedures


Available upon request.