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Resume for Dale Werkema
D. Dale Werkema, Jr., Ph.D.
Education
Ph.D. in Geology - emphasis Geophysics, 2002, Western Michigan
University
Master of Science in Geology - emphasis Geophysics, 1998, Western Michigan
University
Bachelor of Science in Geology, 1995, Wayne State University
Federal Training
Simplified Acquisition, CPR AED & First Aid, Contract Officer Representative (COR), Inter-Agency Agreement/Program Officer (IAG/PO), Security, Quality Assurance, Records Management, OSHA 8 hour refresher
Employment
2002-present: United States Environmental Protection Agency; [werkema.d@epa.gov]. Office of Research and Development, National Exposure Research Laboratory, Environmental Sciences Division, Characterization and Monitoring Branch, Las Vegas, NV. Post-Doc Research Scientist specializing in geophysical methods applied to groundwater contamination and other environmental concerns. The specific project task focuses on research related to geophysical methods applied to NAPL contamination and remediation. Duties also include technical support and review of geophysical investigations through other EPA regions and/or offices
1998-2002: Geophysical Services International, L.L.C., Geophysical Consulting Services, Principal/Geophysicist; Projects include applying near surface geophysical methods to environmental, hydrogeologic and resource exploration investigations; Sites include those throughout Michigan, Indiana, and Brazil.
7/01-5/02: Hope College, Holland, MI.; Visiting Assistant Professor of Geological and Environmental Sciences; Courses taught: Hydrogeology, Surficial Geology, Regional Geology including a 10 day field trip to Death Valley, CA. and select areas in Utah, Physical Geology and Atmospheric Science; Advisor for undergraduate research in geoelectrical properties at a LNAPL contaminated site.
9/99-4/00: Western Michigan University, Department of Geosciences; Instructor, Geology 222, Ocean Systems – Technology and Resources.
Spring 1998 & 2000: Western Michigan University Department of Geosciences; Teaching Assistant Field Geophysics Course, Geol 563; field assistant, equipment manager and technician, field survey, processing and interpretation instructor.
Summer 1997, 1998 & 2000: Western Michigan University Geology Department; Hydrogeology Field Camp Teaching Assistant, head TA during Geophysics week and assistant TA during subsequent weeks (drilling, aquifer analysis, and sampling).
1/99-8/99: Western Michigan University, Department of Geosciences;-Research Assistant, Geophysical Investigation of a Hydrocarbon Impacted Area in Carson City, MI, Funding agency: Petroleum Research Fund
1/99-4/99: University of Michigan, Department of Civil Engineering; Laboratory Instructor, Introduction to Applied Geophysics
Fall 1997 & Fall 1998: Western Michigan University Geology Department; Geology 560, Introduction to Geophysics Teaching Assistant
9/95-4/99: Western Michigan University Geology Department; Teaching Assistant Geology 130 Laboratory
1/94-5/95: Wayne State University Geology Department,
-Student Assistant for Geology 101
Publications
Peer Reviewed
ALLEN, J., E. ATEKWANA, E. ATEKWANA, J. DURIS, D. D. WERKEMA, AND S. ROSSBACH. "Changes in Microbial Community Structure of Petroleum Contaminated Sediments Are Reflected in Geophysical Signatures," (TIP #07-134, Journal Article). APPLIED AND ENVIRONMENTAL MICROBIOLOGY. American Society for Microbiology, Washington, DC, 73(9):2860-2870, (2007). Published 5/1/2007
Total Dissolved Solids in Groundwater and its Relationship to Electrical
Conductivity of Sediments Contaminated with Hydrocarbon, Eliot A. Atekwana,
Estella A. Atekwana, Rebecca S. Rowe, D. Dale Werkema Jr.,
and Franklyn D. Legall, Journal of Applied Geophysics, In review.
In Situ Apparent Resistivity Measurements and Microbial Population
Distribution at a Hydrocarbon Contaminated Site: Implications for Assessing
Natural Attenuation, Estella A. Atekwana, D. Dale Werkema, Jr.,
Joseph W. Duris, Silvia Rossbach, Eliot A. Atekwana, William A. Sauck,
and Daniel P. Cassidy, Geophysics, 2004 In press.
Investigating the Geoelectrical Response of Hydrocarbon Contamination
Undergoing Biodegradation, D. Dale Werkema Jr., Estella
a. Atekwana, Anthony Endres, William A. Sauck and Daniel P. Cassidy, Geophysical
Research Letters, Vol. 30, No. 12, 1647, doi:10.1029/2003GL017346,
2003.
Geoelectrical Response of an Aged LNAPL Plume: Implications For Monitoring
Natural Attenuation, Douglas D. Werkema Jr., Ph.D. Dissertation,
Western Michigan University Waldo Library, 2002.
Geophysical Investigation of Vadose Zone Conductivity Anomalies at a Hydrocarbon Contaminated Site: Implications for the Assessment of Intrinsic Bioremediation, Estella A. Atekwana, William A. Sauck, Gamal Zidon Abdel Aa , and D. Dale Werkema, Jr., Journal of Environmental and Engineering Geophysics, September 2002, Vol 7, Issue 3, p. 102-111.
In Situ Rhamnolipid Production At An Abandoned Petroleum Refinery, Daniel P. Cassidy, Andrew J. Hudak, D. Dale Werkema, Jr. , Estella A. Atekwana, Silvia Rossbach, Joseph W. Duris, Eliot A. Atekwana, and William A. Sauck, Journal of Soil and Sediment Contamination, 2002, 11(5), p. 769-787.
The Effects of LNAPL Biodegradation Products on Electrical Conductivity Measurements, Daniel P. Cassidy, D. Dale Werkema, Jr. , William Sauck, Estella Atekwana, Silvia Rossbach, and Joe Duris, Journal of Environmental and Engineering Geophysics, March 2001, Vol. 6, Issue 1, pp. 47-52.
A Generic Automated/Semi-Automated Digital Multi-Electrode Instrument for Field Resistivity Measurements, Douglas D. Werkema Jr., Johnson A. Asumadu, Estella Atekwana and William Sauck, IEEE Transactions on Instrumentation and Measurement, Dec 2000, vol. 49, No. 6, p.1249.
Investigations of Geoelectrical Signatures at a Hydrocarbon Contaminated Site, Estella A. Atekwana, William A. Sauck, Douglas D. Werkema Jr., Journal of Applied Geophysics, May 2000, Vol. 44/2-3,p. 167-180.
A Versatile Windows Based Multi-Electrode Acquisition System for DC Electrical Methods Surveys, Douglas D. Werkema Jr., Estella Atekwana, William Sauck, Johnson Asumadu, Environmental Geosciences, Dec. 1998, p.196- 206.
A Generic Multi-Electrode Automated/Semi-Automated Field Resistivity
System, Douglas Dale Werkema Jr., M.S. Thesis, Western
Michigan University Waldo Library, April, 1998.
Conference Proceedings and Abstracts
Laboratory and field results linking high conductivities to the microbial
degradation of petroleum hydrocarbons, Werkema, D.D.,
Atekwana, E.A., Atekwana, E., Duris, J., Rossbach, S., Allen, J., Smart,
L., Sauck, W.A., Proceedings of the Symposium on the Applications
of Geophysics to Environmental and Engineering Problems 2004, Colorado
Springs, CO., In press.
Column experiments and anomalous conductivity in hydrocarbon-impacted sands; Laura A. Sherrod, D. Dale Werkema, William A. Sauck, Estella A. Atekwana, Silvia Rossbach, and Eliot A. Atekwana; Eighth International Congress of the Brazilian Geophysical Society, Rio de Janeiro, Brazil, 2003.
Geoelectrical Stratigraphy and Analysis of a Hydrocarbon Impacted Aquifer, D. Werkema Jr., E. Atekwana, A. Endres, and W. Sauck, Joint Assembly of AGU, EUG, Nice France, Spring Meeting 2003.
Microbial Community Structure in a Shallow Hydrocarbon–Contaminated Aquifer Associated with High Electrical Conductivity, J. W. Duris, S. Rossbach, E.A. Atekwana , D. Werkema Jr., Joint Assembly of AGU, EUG, Nice France, Spring Meeting 2003.
Outburst Origin For The Central Kalamazoo River Valley? Geophysical Transect Results, William A. Sauck, Andrew L. Kozlowski, D. Dale Werkema, GSA Eastern Section Abstracts, April 2002.
Temporal And Spatial Variability Of High Resolution In Situ Vertical Apparent Resistivity Measurements At A LNAPL Impacted Site, D. Dale Werkema Jr., Estella A. Atekwana, Anthony Endres, William A. Sauck, Proceedings of the Symposium on the Applications of Geophysics to Environmental and Engineering Problems, 2002, 13ESC4.
Shifts in Microbial Community Structure in Hydrocarbon Impacted Sediments Associated with Alterations in Physical Parameters of Soil, Duris, J.W. Werkema, D. D., Davis, J., Eversole, R., Beuving, L., Atekwana E., and Rossbach S. Abstracts: American Society for Microbiology 101st General Meeting. ASM Press, Washington, D.C. 2001, p.655
Field and Laboratory Studies of the Anomalous Electrical Conductivity Zones Associated with LNAPL Contamination in Michigan, Werkema, D., and Sauck, W., AAPG Eastern Section 2001 Abstracts, Fall 2001.
The Michigan Basin is Thermal in Origin, Kominz, Michelle A., Werkema, D., Barnes, D., Harrison III, W., Kirwan, E. Malin, M., AAPG Eastern Section 2001 Abstracts, Fall 2001.
Anomalous Conductivity in Hydrocarbon Spill Zones - New Extensions to
the WMU Model, Sauck, W., Atekwana, A., Werkema, D.,
Cassidy, D., European Geophysical Society XXVI General Assembly,
Nice, France, 25-30 March 2001.
Changes in Geoelectrical Properties Accompanying Microbial Degradation
of LNAPL, Estella A. Atekwana, Daniel P. Cassidy, Charlie Magnuson, Anthony
L. Endres, D. Dale Werkema Jr. , William A. Sauck, Proceedings
of the Symposium on the Applications of Geophysics to Environmental and
Engineering Problems, 2001, OCS-1.
Geophysical Investigation of Vadose Zone Conductivity Anomalies at a Former Refinery Site, Kalamazoo, MI.,Gamal Zidon Abdel Aal, D. Dale Werkema, Jr., William A. Sauck, Estella A. Atekwana, Proceedings of the Symposium on the Applications of Geophysics to Environmental and Engineering Problems, 2001, VZC-4.
Microbial Communities and Their Effects on Silica Structure & Geophysical Properties in Hydrocarbon Impacted Sediments, Duris, J.W., Werkema, D.D., Atekwana, E., Eversole, R., Beuving, L., Rossbach, S., Geological Society of America Annual Meeting Abstracts, Reno, NV., 2000, vol. 32, no. 7, p A190.
Multi-Method Geophysical Profile of the Glacial Stratigraphy within the Kalamazoo River Valley NW Kalamazoo County, MI., Werkema, D.D., Kozlowski, A.L., Bird, B.C., Sauck, W.A., Kehew, A.E., Geological Society of America Annual Meeting Abstracts, Reno, NV., 2000, vol. 32, no. 7, p. A-19.
Vertical Distribution of Microbial Abundances and Apparent Resistivity at an LNAPL Spill Site, D. Dale Werkema Jr., Estella Atekwana, William Sauck, Siliva Rossbach and Joe Duris, Proceedings of the Symposium on the Applications of Geophysics to Environmental and Engineering Problems, 2000, pp. 669-678.
Geophysical Investigations of a Landfill and its Associated Plume, Bailey, J.M., Groncki, J.D., Atekwana E.A., Sauck, W.A., Werkema, D.D., Proceeding of the Symposium on the Applications of Geophysics to Environmental and Engineering Problems, 1999.
Characterization of a Complex Refinery Groundwater Contamination Plume
Using Multiple Geoelectric Methods, Estella A. Atekwana, William A. Sauck,
D. Dale Werkema Jr., Proceedings of the Symposium
on the Applications of Geophysics to Environmental and Engineering Problems,
1998.
Phone: (702) 798-2263
Fax: (702) 798-2107
email: Dale Werkema werkema.d@epa.gov