Glenn Johnson

Research Associate Professor


Phone: 801-979-1327
Fax: 801-585-3540

Source, Fate and Transport of Persistent Organic

Pollutants. Study of natural alteration and attenuation processes that affect

dibenzo-p-dioxins, dibenzofurans, polychlorinated biphenyls and polycyclic

aromatic hydrocarbons.

Biostratigraphy and Paleoecology. Application of quantitative and graphical

methods applied to micropaleontological data

Environmental Forensics. Development and application of pattern recognition

methods for determination of contaminant sources and alteration processes in

complex environmental systems.

1997 Ph.D. in Geology, University of South Carolina, Columbia, South Carolina, Dissertation: Application of Polytopic Vector Analysis to Environmental Geochemistry Investigations

1988 M.Sc. in Geology, University of Delaware, Newark, Delaware. Thesis: Pleistocene Planktonic Foraminiferal Biostratigraphy and Paleoecology – Northeast Gulf of Mexico.

1985 B.Sc. in Geology, East Carolina University, Greenville, North Carolina.

1982 B.M. in Music Education. East Carolina University, Greenville, North Carolina


  • Society of Environmental Toxicology and Chemistry

  • International Society of Environmental Forensics

Megson, D. N.B. Benoit, C.D. 1Sandau, S.R. Chaudhuri, T. Long, E. Coulthard,

and G.W. Johnson. (2019). Evaluation of the effectiveness of different

indicator PCBs to estimating total PCB concentrations in environmental

investigations. Chemosphere. 237, 124429.

Johnson, G.W. (2017). Chlorinated dioxin and furan congener profiles from pentachlorophenol sources. Journal of Environmental Protection.  8, 663-677.

Hermanson, M.H., R. Hann, and G.W. Johnson. (2016). Polychlorinated Biphenyls in Tree Bark near Former Manufacturing and Incineration Facilities in Sauget, Illinois, United States.  Environ. Sci. Technol. 50: 6207−6215.

Hermanson, M.H., and G.W. Johnson. (2016).  Polychlorinated dibenzofurans and dibenzo-p-dioxin in tree bark from an industrialized area: What the 2,3,7,8-Cl substituted congeners tell us, and what is missing. Journal of Environmental Protection. 7: 351-357.

Johnson, G.W., Ehrlich, R., Full, W., and Ramos, S. (2015). Chapter 18: Principal components analysis and receptor models in environmental forensics.  In: An Introduction to Environmental Forensics. 3rd Edition. (R. Morrison and B. Murphy, eds.). Elsevier. Amsterdam. pp. 609-653.

Johnson, G.W., Bock, M.J., (2014). Modeled PCB weathering series in principal components space: Considerations for multivariate chemical fingerprinting. In: Environmental Forensics Proceedings of the 2013 INEF Conference. Morrison, .D., Sullivan, G (eds). Royal Society of Chemistry (RSC), Cambridge, UK. 117-124.

Johnson, G.W. (2013) Environmental Forensics, in Encyclopedia of Environmetrics, A.-H. El-Shaarawi and W. Piegorsch (eds), John Wiley & Sons Ltd: Chichester, UK.

Johnson, G.W. (2010). Principal components analysis of environmental chemical data: Experience and application. Environmental Forensics: Proceedings of the 2009 INEF Annual Conference. Royal Society of Chemistry Special Publications327: 202-209.

Johnson, G.W., Hansen, L.G., Hamilton, M.C., Fowler, B., and Hermanson, M.H. 2008. PCB, PCDD and PCDF congener profiles in two types of Aroclor 1254. Environmental Toxicology & Pharmacology. 25: 156-163.

Johnson, G.W., Ehrlich, R., Full, W., and Ramos, S. (2007). Chapter 6: Principal components analysis and receptor models in environmental forensics. In: An Introduction to Environmental Forensics. 2nd Edition. (R. Morrison and B. Murphy, eds.). Elsevier. Amsterdam. pp. 207-272.

Johnson, G.W., Quensen, J.F., III, Chiarenzelli, J., and Hamilton, C. (2006). Chapter 10: Polychlorinated Biphenyls. In: Environmental Forensics: A Contaminant Specific Guide (R. Morrison and B. Murphy, eds.). Elsevier. Amsterdam. pp. 187-225.

DeCaprio, A. P., Johnson, G. W., Tarbell, A. M., Carpenter, D. O., Chiarenzelli, J. R., Morse, G. S., Santiago-Rivera, A. L., Schymura, M. J., and Akwesasne Task Force on the Environment. 2005. PCB exposure assessment by multivariate statistical analysis of serum congener profiles in an adult Native American population. Environ. Res. 98, 284-302.

Gary, A.C., G.W. Johnson, D.D. Ekart, E. Platon, and M.I. Wakefield. (2005). A Method for Two-Well Correlation using Multivariate Biostratigraphical Data. In: Recent Developments in Applied Biostratigraphy. (A.J. Powell & J.B. Riding, Eds). The Micropaleontological Society Special Publication. pp. 205-217. Micropaleontological Society. London

Magar, V.S., Johnson, G.W., Brenner, R., Durell, G., Quensen, J.F., III, Foote, E., Ickes, J.A., Peven-McCarthy, C. 2005. Long-term recovery of PCB-contaminated sediments at the Lake Hartwell Superfund Site: PCB Dechlorination I End-Member Characterization. Environ. Sci. Technol. 39: 3538-3547.

Glenn Johnson joined EGI in 1995 and is a Research Associate Professor. He earned his M.Sc. in Geology at the University of Delaware and his Ph.D. in Geology at the University of South Carolina. Dr. Johnson has over 30 years’ experience in environmental chemistry, petroleum geochemistry, statistics and data analysis, and micropaleontology/biostratigraphy. Dr. Johnson spent seven years in environmental consulting, where he worked on numerous environmental site assessment and remediation projects under a number of state and federal regulatory authorities. He holds faculty appointments in the Department of Geology & Geophysics and the Department of Civil & Environmental Engineering. Dr. Johnson frequently consults, and has served as an expert witness in a number of environmental litigation matters involving multivariate statistics and environmental chemistry. Environmental Forensics/Chemistry Dr. Johnson’s environmental expertise is in the area of environmental forensics, with a particular focus on multivariate statistical analysis of chemical data and sources, fate and transport of PCBs, polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/F), and polycyclic aromatic hydrocarbons (PAH). He has conducted research at EGI which has been sponsored by the U.S. Environmental Protection Agency (EPA), Agency for Toxic Substances & Disease Registry (ATSDR), Department of Defense, Environmental Security Technology Certification Program (ESTCP), as well as by industry sponsors. He has conducted environmental chemical fingerprinting studies in more than 15 states and several countries. Biostratigraphy/Micropaleontology Dr. Johnson has been involved with the Technical Alliance for Computational Stratigraphy (TACS) at EGI, since its inception in 1997. His primary duties have been related to algorithm development, prototyping, and deployment of TACSWorks – a biostratigraphy workstation software package for micropaleontologists working in the oil & gas industry. He has also been involved in software design and implementation/ publication on demonstration data sets from the Gulf of Mexico and North Sea. Petroleum Geochemistry Dr. Johnson has collaborated with EGI petroleum geochemists on a number of projects where multivariate statistical methods have been applied to crude-oil petroleum geochemical data, for purposes of oil fingerprinting, petroleum systems analysis, and reservoir compartmentalization evaluation. He has collaborated on multiple oil fingerprinting projects at EGI in a number of regions, including the Caspian Sea, Persian Gulf states, and the Gulf of Mexico.

Research Interests • Statistics and Data Analysis in Geology and Environmental Chemistry • Environmental Forensics • Source, Fate, and Transport of Persistent Organic Pollutants • Biostratigraphy and Paleoecology • Crude Oil Chemical Fingerprinting