Provides 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

Forty-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-October 2011
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 (146.085 Death Inv.)

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, Idaho, Utah, Arizona, California, Alaska and federal court in Oregon and Fort Lewis, Washington.


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


American Academy of Forensic Sciences Bloodstain Pattern Analysis Consensus Board NIST OSAC Task Group Affiliate on Bloodstain Analysis Training, Education and Certification
Past member of the International Association for Identification Bloodstain Pattern Analysis Certification Board

Los Angeles County, California Superior Court Approved Panel of Expert Witnesses

Certified Bloodstain Pattern Analyst by the International Association for Identification (expires 2025)

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

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.

IAI – Past Member, Bloodstain Pattern Identification Committee Invited Guest to SWGSTAIN Meeting, Fall 2010


  • 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 Videography
  • 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 clarification 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 on Full CV


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
  • 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’s Office, Eugene, Oregon
    (Consultant-bloodstain pattern analysis and digital
  • 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
    (Instructor-ridgeology, crime scene reconstruction, latent
    print analysis)
  • 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-gunshot 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
    (Instructor-ridgeology, bloodstain pattern analysis)
  • Lane County Defense Consortium
  • Southern Oregon Public Defenders, Inc.
    (bloodstain pattern analysis, latent print analysis, processing, shooting reconstruction)
  • Navajo County Arizona Public Defender
    (shooting reconstruction, bloodstain pattern analysis)
  • Montana State Public Defender
    (latent print analysis, bloodstain pattern analysis, crime scene reconstruction)
  • Marion County Oregon Public Defender
    (latent print analysis)
  • Clark County Washington Indigent Defense
    (shooting reconstruction, latent print analysis, Instructor-
    bloodstain pattern analysis)
  • Los Angeles County California Public Defender
    (bloodstain pattern analysis, footwear Impression
  • San Francisco County California Public Defender
    (latent print analysis)
  • Pima County Arizona Public Defender
    (bloodstain pattern analysis) State of Alaska Public Defender Agency-Juneau, Nome,
  • Fairbanks
    (bloodstain pattern analysis, crime scene reconstruction, latent print analysis)
  • San Bernardino County California Public Defender
    (bloodstain pattern analysis, crime scene reconstruction) Idaho State Appellate Public Defender
    (crime scene investigation review)
  • San Francisco County District Attorney’s Office
    (bloodstain pattern analysis, crime scene reconstruction)


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

References provided upon request.


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