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Geological Materials Subcommittee

Members of the OSAC Geological Materials Subcommittee
Members of the OSAC Geological Materials Subcommittee (July 2019)

Officers | Members | Standards | Discipline-Specific Baseline Documents | Research & Development Needs | Presentations

The Geological Materials Subcommittee focuses on standards and guidelines related to the collection, analysis, reporting, and interpretation of soils and other geological materials.


Andrew Bowen, Subcommittee Chair, U.S. Postal Inspection Service

Brad Lee, Ph.D., Subcommittee Vice Chair, University of Kentucky 

Kim Mooney, Ph.D., Subcommittee Executive Secretary, Defense Forensic Science Center (including U.S. Army Criminal Investigation Laboratory)


Hal Arkes, Ohio State University (Human Factors Representative)

Christopher Bernhardt, Ph.D., U.S. Geological Survey

Jason Chin, Alameda County District Attorney's Office (Legal Resource Representative)

David Green, Lake County Crime Laboratory (Quality Infrastructure Representative)

Ethan Groves, Microtrace LLC

Jack Hietpas, Ph.D., Pennsylvania State University

Wayne C. Isphording, Self-employed

Heather Lowers, U.S. Geological Survey

Alex Rugh, State of Colorado 

Ian Saginor, Federal Bureau of Investigation

William Schneck, Self-employed

Michael A. Smith, Federal Bureau of Investigation

Libby Stern, Ph.D., Federal Bureau of Investigation 

David Szymanski, Ph.D., Bentley University

Roadmap of Documents


Tier 1: On the OSAC Registry

  • None currently.

Tier 2: Published by an SDO

  • None currently.

Tier 3: Sent to an SDO

The Geological Materials Subcommittee, in collaboration with the University of Kentucky, the FBI, and the IUGS-Initiative of Forensic Geology have developed a Forensic Soil Evidence Collection Training Video to accompany the draft Standard Guide for the Collection of Soils and Other Geological Evidence for Forensic Applications. Learn more about this project by reading our news story

Tier 4: Under Development

  • Standard Guide for Scanning Electron Microscopy (SEM)/ Energy Dispersive Spectroscopy (EDS) Analysis of Soils and Geological Materials for Forensic Applications.
  • Standard Guide for Polarized Light Microscopy of Soils and Geological Materials for Forensic Applications. 
  • Standard Guide for X-Ray Diffraction of Soils and Geological Materials for Forensic Applications. 

Discipline-Specific Baseline Documents

  • None currently.

Research & Development Needs


  • None currently.

In general, the development of standards and guidelines is transitioning from the Scientific Working Groups (SWGs) to the OSAC. Some SWGs will continue to operate to provide other resources within their discipline. The existing SWG documents will remain in effect until updated documents are disseminated by the OSAC or the SWG. SWGDAM will retain the responsibility for updating the FBI DNA Quality Assurance Standards.

– Forensic Science Standards Board: March 2015

Created July 9, 2014, Updated March 23, 2020