Michelle Lorah

Dr. Michelle Lorah is a Research Hydrologist and has been with the U.S. Geological Survey in the Maryland Water Sciences Center since 1985, where she directs the Fate and Bioremediation Team.  Her research focuses on contaminant fate, microbial community dynamincs, and developing bioremediation methods for a wide range of organic and inorganic contaminants in groundwater and sediments.

Biography

My research is focused on determining natural attenuation processes in complex environments, such as wetlands, sediment, and fractured rock, with the goal of enhancing or augmenting these processes to obtain efficient remediation of contaminants.  This research includes defining anaerobic and aerobic degradation processes, microbial community dynamics, and controlling environmental factors.  Much of my research has focused on chlorinated volatile organic compounds, including chlorinated ethanes, ethenes, and benzenes, and development of bioremediation technologies for these widespread groundwater contaminants.  I have led the development of an anaerobic dechlorinating consortium (WBC-2) for degradation of chlorinated solvents and of bioreactive barriers or caps for application in bottom sediment and groundwater discharge areas.  Additional research has included study of biodegradation of explosives compounds and perchlorate, natural attenuation of landfill leachate, and fate of nutrients in groundwater/surface-water discharge area.

 

Education

B.S.     Pennsylvania State University, Geosciences/Minor, Marine Science                       1983

M.S.    University of Virginia, Environmental Sciences- Geochemistry                               1987

Ph.D.  University of MarylandMarine-Estuarine-Environmental Sciences Program-

            Environmental Chemistry                                                                                             1999

 

Professional Experience

1994-Present, Research Hydrologist, U.S. Geological Survey, Baltimore, Maryland

  • Technical director of Fate and Bioremediation Team.
  • Principal or co-principal investigator on projects investigating contaminant fate and remediation, with a specialization on complex hydrogeologic environments, including wetlands and other areas of ground-water-surface water interaction and fractured rock. 
  • Operate research laboratory for analysis of volatile organic compounds and gases, culturing of contaminant degrading microorganisms, conducting experiments to determine anaerobic and aerobic biodegradation and other contaminant fate processes, and developing remediation methods.

1985-1994, Hydrologist/Project Chief, U.S. Geological Survey, Baltimore, Maryland

  • Principal scientist investigating ground-water contaminant sources and fate in the Canal Creek Study Area, APG, MD., including natural attenuation of chlorinated solvents in wetland areas.
  • Project Chief since 1989.

1983-1985, Teaching Assistant, University of Virginia, Charlottesville, Virginia

Current and Recent Projects

•     2009-present, Bioremediation of Chlorobenzenes and Benzene in Wetland Areas, Standard Chlorine of Delaware Superfund Site, Delaware.  USEPA Region III.

•     2014-present, Dual-Biofilm Reactive Barrier for Treatment of Chlorinated Benzenes at Anaerobic-Aerobic Interfaces in Contaminated Groundwater and Sediments.  National Institute of Health, National Institute of Environmental Health Sciences (NIEHS) research grant.  Co-principal investigator.

•     2014-present, Fate of Contaminants in Fractured Rock, Naval Air Warfare Center, West Trenton, NJ: Microbial Community Dynamics and Effect on Biodegradation and Bioremediation.  USGS Toxic Substances Hydrology Program.

•     2015-present, A Field Method to Quantify Chlorinated Solvent Diffusion, Sorption, Abiotic and Biotic Degradation in Low Permeability Zones.  Strategic Environmental Research and Development Program (SERDP) research grant.  Co-principal investigator.

•     2016-present, Wetland Elevation Monitoring and Potential Sea Level Rise Impact, Aberdeen Proving Ground, Maryland.  Department of Defense, Aberdeen Proving Ground, Maryland.

•     2016-present, CERCLA Technical Advisory Support, Monitored Natural Attenuation Assessment, and Contaminant Fate and Transport.  US Fish and Wildlife Service and US Department of Justice.

•     2016-present, Technical Support and VOC Analyses.  California Regional Oil and Gas Groundwater Monitoring Program.  USGS California Water Science Center.

•     2010-2015, Cooperative Research and Development Agreement Studies, Capabilities and Applications of the WBC-2 Dechlorinating Culture.  Geosyntec Consultants, Inc.

•     2008-2012, Development of WBC-2 Seeded Anaerobic Bioreactors for Treatment of Volatile Organic Compounds in Groundwater Pump-and-Treat Plants, Department of Defense, Aberdeen Proving Ground, Maryland.

Patents and Awards 

Patent No. 8,105,808 B2, 2012; and Patent No. 8,673,614 B2, 2014. Anaerobic Dechlorinating Consortium (WBC-2), principal inventor M. M. Lorah with co-inventors Mary Voytek and Elizabeth J. Jones.

Fellow, Geological Society of America. 2015. 

Cooperative Research and Development Agreement (CRADA), 2005-present, Geosyntec Consultants.To further test and apply WBC-2 consortia and permeable bioreactive barrier technologies.

Superior Service Award, Department of the Interior, March 2004, in recognition of significant advances in USGS scientific programs and the science of fate, natural attenuation and bioremediation of chlorinated volatile organic compounds.

Best Groundwater Report from a Water Science Center, USGS, 2014.

David A. Aronson “Report of the Year” Award, USGS, 1997.

Performance-Based and STAR Awards, USGS. Multiple awards 1993-2017.

Certificate of Recognition, United States Army Materiel Command, 1992.Awarded in recognition of development of unique methods to assess the potential environmental impacts of contaminants.

Professional Activities

Member, USEPA Board of Scientific Counselors, Safe and Sustainable Water Resources Subcommittee, 2017-2020.

Geological Society of America, Research Committee, 2016-present.  Evaluate and rank student proposals submitted for funding by GSA grants.

Federal Remediation Technology Roundtable General Meeting, Invited Seminars, 2015 and 2016.

USGS Research Grade Evaluation panels: Biogeochemistry Research Grade Evaluation panel, 2013; Ground-water Chemistry Research Grade Evaluation Peer Panel, 1994.     

Associate Editor, Aquatic Geochemistry, February 2006-2009.

Associate Editor of Water Resources Research, October 1997 to December 2000.

Biodegradation in the Groundwater-Surface Water Interaction Zone Panel, Ninth International In Situ and On-Site Bioremediation Symposium, 2007.  Expert panel convened on current scientific understanding of biodegradation and controlling processes, and impacts on monitoring approaches and risk assessment.  Baltimore, Maryland, May 8, 2007.

DOE Technical Assistance Team, January 2005, Oak Ridge, TN, provide expertise on design and function of natural and constructed wetlands as applied to the degradation of chlorinated VOCs. 

Science Advisory Committee, Center for Hazardous Substances in Urban Environments, USEPA Center for Hazardous Substances Research, Johns Hopkins University.  September 2002-2005.

Science Advisory Council, USGS MD-Delaware-DC Water Resources Center, 2008-present.  Science directions for the Center and provide recommendations of program opportunities.

Committee on Environmental Remediation at Naval Facilities, National Academy of Sciences, National Research Council.  July 2000-February 2003.

TIGER Team Technology Review, U.S. Navy, Naval Facilities Engineering Service Center.  Expert consultant to evaluate and provide recommendations for Remediation Program Managers at Chesapeake Division Naval Facilities, April 15-20, 1996.

Professional Society Memberships- Geological Society of America, American Geophysical Union, American Chemical Society, Geochemical Society, International Society of Subsurface Microbiology

Academic Service

Graduate Student Advisory and Research Committees, 2001-present:

M.S. Thesis Committee Member, October 2001- 2002, Carey Nagoda, University of Maryland, Department of Biological Resources Engineering.

M.S. Thesis Committee Member, January 2003- 2006, Emily Devillier, University of Maryland, Department of Biological Resources Engineering.

Mareike Braeckevelt, Ph.D. student, Department of Bioremediation, Helmholtz Center for Environmental Research, Leipzig, Germany, June-July 2008, worked in my laboratory as part of her dissertation research on chlorobenzene degradation in a constructed wetland.

Ph.D. Advisory role, Jennifer Fedorowski, University of Maryland, Baltimore County, Department of Chemistry and Biochemistry, 2008-2012.  RDX analysis and metabolites in groundwater.

Ph.D. Committee, Steven Chow, 2017-. Johns Hopkins University, Department of Environmental Health and Engineering.

Academic Seminars, 1996-2014, given at Johns Hopkins University, University of Virginia, University of Maryland, College Park and Chesapeake Biological Laboratory, University of Maryland Baltimore County,  Drexel University, Wright State University, Frostburg State University.

Publications

Schiffmacher, E.N., Becker, J.G., Lorah, M.M., Voytek, M.A, 2016, The effects of co-contaminants and native wetland sediments on the activity and dominant transformation mechanisms of a 1,1,2,2-tetrachloroethane-degrading enrichment culture: Chemosphere, v. 147, p. 239-247.

Akob, D.M., Cozzarelli, I.M., Dunlap, D.S., Rowan, E.L., and Lorah, M.M., 2015, Organic and inorganic composition and microbiology of produced waters from Pennsylvania shale gas wells: Applied Geochemistry. v. 60: 116-125. http://dx.doi.org/10.1016/j.apgeochem.2015.04.011.  

Lorah, Michelle M., Walker, Charles, and Graves, Duane, 2015, Performance of an anaerobic, static bed, fixed film bioreactor for chlorinated solvent treatment: Biodegradation, vol. 26 (5): 341-357.

Walker, C.W., Degnan, J.R., Brayton, M.J., Cruz, R.M., and Lorah, M.M., 2015, Surface geophysics and porewater evaluation at the Lower Darby Creek Area Superfund Site, Philadelphia, Pennsylvania, 2013: U.S. Geological Survey Data Series 927, 6 p. Lorah, M.M., Graves, D., and Majcher, E.H., 2014, New Remediation Technology: Bioreactive mat for treatment of chlorinated volatile organic compounds in wetlands at Aberdeen Proving Ground, Maryland: Technology News & Trends, EPA 542-N-14-003, Issue Number 67, Fall 2014, U.S. Environmental Protection Agency.

Lorah, M.M., Walker, C.W., Baker, A.C., Teunis, J.A., Majcher, E.H., Brayton, M.J., Raffensperger, J.P., and Cozzarelli, I.M, 2014, Hydrogeologic characterization and assessment of bioremediation of chlorinated benzenes and benzene in wetland areas, Standard Chlorine of Delaware, Inc. Superfund Site, New Castle County, Delaware, 2009–12: U.S. Geological Survey Scientific Investigations Report 2014–5140, 89 p.

Cozzarelli, I.M., Böhlke, J. K., Masoner, J., Breit, G.N., Lorah, M. M., Tuttle, M.L.W., and Jaeschke, J.B., 2011, Biogeochemical Evolution of a Landfill Leachate Plume, Norman, Oklahoma, Ground Water, 49(5):663-87.

Federowski, Jennifer, LaCourse, W.R., and Lorah, M.M., 2011, Photo-Assisted Electrochemical Detection (PAED) Following HPLC-UV for the Determination of Nitro-Containing Explosives and Degradation Products, Proceedings of the International Symposium on Bioremediation and Sustainable Environmental Technologies, Reno, Nevada.

Lorah, M.M., Soeder, D.J., and Teunis, J.A., 2010, Summary of organic wastewater compounds and other water-quality data in Charles County, Maryland, October 2007 through August 2008: U.S. Geological Survey Open-File Report 2010–1071, 19 p., plus appendixes.

Lorah, M.M., Cozzarelli, I.M., and Böhlke, J.K., 2009, Biogeochemistry at a wetland sediment-alluvial aquifer interface in a landfill leachate plume: Journal of Contaminant Hydrology, v. 105, no. 3-4, p. 99-117.

Majcher, E.H., Lorah, M.M., Phelan, D.J., and McGinty, A.L., 2009, Design and performance of an enhanced bioremediation pilot test in a tidal wetland seep, West Branch Canal Creek, Aberdeen Proving Ground, Maryland, U.S. Geological Survey Scientific Investigations Report 2009-5112, p. 70 plus appendices.

Lorah, M.M., Majcher, E.H., Jones, E.J.P., and Voytek, M.A., 2008, Microbial consortia development and microcosm and column experiments for enhanced bioremediation of chlorinated volatile organic compounds, West Branch Canal Creek wetland area, Aberdeen Proving Ground, Maryland: U.S. Geological Survey Scientific Investigations Report 2007–5165, 79 p.

Lorah, M.M., Vogler, E.T., Dennis, P., Graves, D., and Gallegos, J., 2008, Laboratory and in situ tests for bioremediation of hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) by the dechlorinating consortium WBC-2, in Remediation of Chlorinated and Recalcitrant Compounds, Proceedings of the Sixth International Conference, Monterey, CA, May 19-22, 2008., Battelle.

Lorah, M.M., Burris, D.R., and Dyer, L., 2007, Anaerobic biodegradation and hydrogeochemical controls on natural attenuation of trichloroethene in an inland forested wetland: Bioremediation Journal, v. 11, no. 2, p. 85-102.

Majcher, E.H., Phelan, D.J., Lorah, M.M., and McGinty, A.L., 2007, Characterization of preferential ground-water seepage from a chlorinated hydrocarbon-contaminated aquifer to West Branch Canal Creek, Aberdeen Proving Ground, Maryland: U.S. Geological Survey Scientific Investigations Report 2006-5233.

Wein, G. R., Lorah, M. M., and Majcher, E. 2007. "Wetland Enhancement-Reactive Mat at the Aberdeen Proving Ground-West Bank Canal Creek." in T. Early (editor), Enhancements to Natural Attenuation of Chlorinated VOCs:  Selected Case Studies. WSRC-STI-2007-00250, May 15, 2007. Prepared for the U.S. Department of Energy by Savannah River National Laboratory.

Jones, E.J.P., Voyek, M.A., Lorah, M.M., and Kirshtein, J.D., 2006, Characterization of a microbial consortium capable of rapid and simultaneous dechlorination of 1,1,2,2-tetrachloroethane and chlorinated ethane and ethene intermediates: Bioremediation Journal, v. 10, p. 153-168. 

Lorah, M.M., Spencer, T.A., and McGinty, A.L., 2005, Temporal changes in indicators of natural attenuation and physical controlling factors for a freshwater tidal wetland contaminated with chlorinated volatile organic compounds, West Branch Canal Creek, Aberdeen Proving Ground, Maryland, 1995-2001: U.S. Geological Survey Scientific Investigations Report 2005-5057, 64 p. (http://md.water.usgs.gov/publications/sir-2005-5057/

Lorah, M.M., Burris, D.R., and Dyer, Linda Jo, 2005, Natural Attenuation of chlorinated solvent ground-water plumes discharging into wetlands: U.S. Geological Survey Scientific Investigations Report 2004-5220.  http://md.water.usgs.gov/publications/sir-2004-5220/

Lorah, M.M., and Voytek, M.A., 2004, Degradation of 1,1,2,2-tetrachloroethane and accumulation of vinyl chloride in wetland sediment microcosms and in situ porewater: Biogeochemical controls and associations with microbial communities: Journal of Contaminant Hydrology, v. 70, p. 117-145.

Jones, E.J.P., Voytek, M.A., and Lorah, M.M., 2004, Effect of Fe(III) on 1,1,2,2-tetrachloroethane degradation and vinyl chloride accumulation in wetland sediments of the Aberdeen Proving Ground: Bioremediation Journal, v. 8(1-2), p. 31-45. 

Lorah, M.M., Voytek, M.A., Kirshtein, J.D., and Jones, E.J. (Phillips), 2003, Anaerobic degradation of 1,1,2,2-tetrachloroethane and association with microbial communities in a freshwater tidal wetland, Aberdeen Proving Ground, Maryland: Laboratory experiments and comparisons to field data: U.S. Geological Survey Water-Resources Investigations Report 02-4157, 64 p.

National Research Council, 2003, Environmental Cleanup at Navy Facilities: Adaptive Site Management: The National Academies Press, Washington, D.C., 272 p.

Lorah, M.M., Voytek, M.A., and Spencer, T.A., 2003, Preliminary assessment of microbial communities and biodegradation of chlorinated volatile organic compounds in wetlands at Cluster 13, Lauderick Creek area, Aberdeen Proving Ground, Maryland: U.S. Geological Survey Water-Resources Investigations Report 03-4119,19 p.

Lorah, M.M., Burris, D.R., and Dyer, L.J., 2002, Efficiency of natural attenuation of chlorinated solvents in two freshwater wetlands. in K.W. Nehring and S.E. Brauning (eds.), Proceedings of the Second International Conference on Wetlands & Remediation, September 5-6, 2001, Burlington, Vermont: Battelle Press, Columbus, Ohio, p. 9-16.

Dyer, Linda Jo, Lorah, M.M., and Burris, D.R., 2002, Effect of sampling method on measured porewater concentrations in a wetland contaminated by chlorinated solvents, in K.W. Nehring and S.E. Brauning (eds.), Proceedings of the Second International Conference on Wetlands & Remediation, September 5-6, 2001, Burlington, Vermont: Battelle Press, Columbus, Ohio, p. 33-40.

Phelan, D.J., Fleck, W.B., Lorah, M.M., and Olsen, L.D., 2002, Changes in ground-water quality in the Canal Creek aquifer between 1995 and 2000-2001, West Branch Canal Creek area, Aberdeen Proving Ground, Maryland: U.S. Geological Survey Water-Resources Investigations Report 02-4076, 42 p. 

Lorah, M.M., Olsen, L.D., Capone, D.G., and Baker, J.E., 2001, Biodegradation of trichloroethylene and its anaerobic daughter products in freshwater wetland sediments: Bioremediation Journal, v. 5, no. 2, p. 101-118.

Lorah, M.M., and Olsen, L.D., 2000, Natural attenuation of chlorinated solvents in a freshwater tidal wetland, Aberdeen Proving Ground, Maryland: Proceedings of the Ground-water/Surface-water Interactions Workshop, EPA/542/R-00/007, p. 126-130.

Lorah, M.M., Voytek, M.A., and Kirstein, J., 2000, Biotic and abiotic degradation of 1,1,2,2-tetrachloroethane in wetland sediments: Geochemical and microbial community analyses: American Chemical Society Division of Environmental Chemistry Extended Abstracts, v. 40, no. 2, p. 332-334.  Presented at the 220th American Chemical Society National Meeting, Washington, D.C., August 20-24, 2000.

Lorah-Devereux, M.M., 1999, Natural attenuation of chlorinated volatile organic compounds in a freshwater tidal wetland: University of Maryland, Ph.D. Dissertation.

Lorah, M.M., and Olsen, L.D., 1999, Degradation of 1,1,2,2-tetrachloroethane in a freshwater tidal wetland: Field and laboratory evidence: Environmental Science and Technology, v. 33, no. 2, p. 227-234.

Lorah, M.M., and Olsen, L.D., 1999, Natural attenuation of chlorinated volatile organic compounds in a freshwater tidal wetland: Field evidence of anaerobic biodegradation: Water Resources Research, v. 35, no. 12, p. 3811-3827.

Lorah, M.M., and Olsen, L.D., 1999, Natural attenuation of chlorinated volatile organic compounds in a freshwater tidal wetland, Aberdeen Proving Ground, Maryland: U.S. Geological Survey Toxic Substances Hydrology Program-Proceedings of the Technical Meeting, Charleston, SC, March 8-12, 1999: U.S. Geological Survey Water-Resources Investigations Report 99-4018C, v.3, p. 653-666.

Lorah, M.M., and Olsen, L.D., 1998, Anaerobic and aerobic biodegradation of chlorinated solvents in a freshwater wetland: in Natural Attenuation: Chlorinated and Recalcitrant Compounds, G.B. Wickramanayake and R.E. Hinchee (Eds.), Proceedings of The First International Conference on Remediation of Chlorinated and Recalcitrant Compounds, Monterey, CA, May 18-21, 1998, p. 27-32: Battelle Press, Columbus, OH.

Olsen, L.D., and Lorah, M.M., 1998, Natural attenuation of chlorinated VOCs in wetlands: Ground Water Currents, September 1998, no. 29, EPA 542-N-98-008, p. 1-2. 

Lorah, M.M., Olsen, L.D., and Smith, B.L., 1997, Natural attenuation of chlorinated hydrocarbons in a freshwater wetland: in In Situ and On-Site Bioremediation, v. 3, p. 207-212, (Proceedings of the 4th International Symposium on In Situ and On-Site Bioremediation, New Orleans, Louisiana, April 28-May 1, 1997): Battelle Press, Columbus, OH.

Lorah, M.M., Olsen, L.D., Smith, B.L, Johnson, M.A., and Fleck, W.B., 1997, Natural attenuation of chlorinated volatile organic compounds in a freshwater tidal wetland, Aberdeen Proving Ground, Maryland: U.S. Geological Survey Water-Resources Investigations Report 97-4171, 95 p.

Olsen, L.D., Lorah, M.M, Marchand, E.H., Smith, B.L., and Johnson, M.A., 1997, Hydrogeologic, water-quality, and sediment-quality data for a freshwater tidal wetland, West Branch Canal Creek, Aberdeen Proving Ground, Maryland: U. S. Geological Survey Open-File Report 97-560, 267 p.

Lorah, M.M., and Clark, J.S., 1996, Contamination of ground water, surface water, and soil, and evaluation of selected ground-water pumping alternatives in the Canal Creek area of Aberdeen Proving Ground, Maryland: U. S. Geological Survey Open-File Report 95-282, 318 p.

Vroblesky, D.A., Lorah, M.M., and Oliveros, J.P., 1995, Ground-water, surface-water, and bottom-sediment contamination in the O-Field area, Aberdeen Proving Ground, Maryland, and the possible effects of selected remedial actions on ground-water quality: U.S. Geological Survey Water-Supply Paper Report 2399, 95 p. 

Vroblesky, D.A., and Lorah, M.M., 1991, Prospecting for zones of contaminated ground-water discharge to streams using bottom-sediment gas bubbles: Ground Water, v. 29, no. 3, p. 333-340. 

Vroblesky, D.A., Lorah, M.M., and Trimble, S.P., 1991, Mapping zones of contaminated-ground-water discharge using creek-bottom-sediment vapors, Aberdeen Proving Ground, Maryland:  Ground Water, v. 29, no. 1, p. 7-12.  

Lorah, M.M., and Herman, J.S., 1990, Geochemical evolution and calcite precipitation rates in Falling Spring Creek, Virginia, in Herman, J. S., and Hubbard, D. A., Jr., eds., Travertine-marl: Stream deposits in Virginia:  Virginia Division of Mineral Resources Publication 101, Charlottesville, Virginia, p. 17-32.

Lorah, M.M., and Vroblesky, D.A., 1989, Inorganic and organic ground-water chemistry in the Canal Creek area of Aberdeen Proving Ground, Maryland: U.S. Geological Survey Water-Resources Investigations Report 89-4022, 97 p.

Vroblesky, D.A., Lorah, M.M., and Oliveros, J.P., 1989, Ground-water, surface-water, and bottom-sediment contamination in the O-Field area, Aberdeen Proving Ground, Maryland, and the possible effects of selected remedial actions on ground-water quality: U.S. Geological Survey Open-File Report 89-399. 

Lorah, M.M., and Herman, J.S., 1988, The chemical evolution of a travertine-depositing stream: Geochemical processes and mass transfer reactions: Water Resources Research, v. 24, no. 9, p. 1541-1552.

Herman, J.S., and Lorah, M.M., 1988, Calcite precipitation rates in the field: Measurement and prediction for a travertine-depositing stream: Geochimica et Cosmochimica Acta, v. 52, no. 10, p. 2347-2355. 

Oliveros, J.P., Vroblesky, D.A., and Lorah, M.M., 1988, Increasing purging efficiency through the use of inflatable packers, in Proceedings of the Second National Outdoor Action Conference on Aquifer Restoration, Ground Water Monitoring and Geophysical Methods, May 23-26, 1988, Las Vegas, Nevada: Ohio, National Water Well Association, p. 457-469. 

Lorah, M.M., 1987, The chemical evolution of a travertine-depositing stream: M.S. Thesis, University of Virginia, Charlottesville, 175 p.

Herman, J.S., and Lorah, M.M., 1987, CO2 outgassing and calcite precipitation in Falling Spring Creek, Virginia, U.S.A.: Chemical Geology, v. 62, p. 251-262. 

Herman, J.S., and Lorah, M.M., 1986, Chemical evolution of water in Warm River Cave and Falling Spring Creek, Virginia, USA:  Proceedings of the IX International Speleological Congress, Barcelona, Spain, August 1986, p. 77-79.  

Herman, J.S., and Lorah, M.M., 1986, Groundwater geochemistry in Warm River Cave, Virginia: NSS (National Speleological Society) Bulletin, v. 48, p. 54-61. 

Hubbard, D.A., Giannini, W.F., and Lorah, M.M., 1985, Travertine-marl deposits of the Valley and Ridge Province of Virginia- A preliminary report: Virginia Minerals, v. 31, no. 1, p. 1-8.   

Recent Presentations

Lorah, M.M., Wadhawan, A., Durant, N., Chow, S., Bouwer, E.J., 2017, Field application of dual-biofilm barriers for in situ remediation of chlorobenzenes in groundwater and wetland sediments.  Fourth International Symposium on Bioremediation and Sustainable Environmental Technologies, May 22-25, 2017, Miami, Florida.

Lorah, M.M., Cozzarelli, I.M., and Akob, D., 2017, Biogeochemical processes affecting groundwater discharge in a chlorobenzene-contaminated wetland. Geological Society of America Southeastern Section, 66th Annual Meeting, March 30-31, 2017, Richmond, VA.

Lorah, M.M., Majcher, E.H., Akob, D.A., Bouwer, E.J., Chow, S., Durant, N., and Wadhawan, A., 2017, Field pilot tests of a reactive barrier with bioaugmented GAC for in situ treatment of chlorinated benzenes in sediments. Ninth International Conference on Remediation and Management of Contaminated Sediments, January 9-12, 2017, New Orleans, LA.

Lorah, M.M., February 12, 2016, Fate and remediation of chlorinated benzenes and benzene in wetland, Standard Chlorine of Delaware, Inc. Superfund Site, AECOM Seminar/Webinar Series, Newark, Delaware. (Approved State of Delaware, Board of Geologists, Continuing Education Credit). Invited.

Lorah, M.M., Teunis, J.A., Akob, D.M., Dunlap, D., Bouwer, E.J., Chow, S., Durant, N., and Wadhawan, A., 2016, Dual anaerobic-aerobic cultures bioaugmented on GAC for treatment of chlorinated benzenes and benzene in contaminated groundwater and sediments. Tenth International Conference on Remediation of Chlorinated and Recalcitrant Compounds. May 22-26, 2016, Palm Springs, CA.

Lorah, M., E.J. Bouwer, S. Chow, N. Durant, and A. Wadhawan. Chlorobenzenes in Discharging Groundwater and Wetland Sediment. NIEHS Environmental Health Sciences Annual Meeting, Durham, NC, December 5-8, 2016.

Lorah, M.M., and Cozzarelli, I., 2015. Measurements to characterize biodegradation of volatile organic compounds in field samples and experiments, National Environmental Monitoring Conference (NEMC), July 12-17, Chicago, IL.. Invited.

Lorah, M.M., Akob, D.M., Darren, D., and Teunis, J., 2015, Culture testing for a dual-biofilm reactive barrier for treatment of chlorinated benzenes in wetland groundwater and sediment, Geological Society of America Annual Meeting, Baltimore, Maryland, November 1-4. 

Lorah, M.M, Bouwer, E.J., Chow, S., Durant, N., and Wadhawan, A., 2015, Development of a Dual-Biofilm Reactive Barrier for Treatment of Chlorinated Benzenes at Anaerobic-Aerobic Interfaces in Groundwater and Sediments, Superfund Research Program Annual Meeting, San Juan, Puerto Rico, November 18-20.

Lorah, M.M., Walker, C.W., Teunis, J., and Cruz, R., 2014, Development of an enhanced bioremediation technology for complete degradation of high concentrations of tri-, di-, and mono-chlorobenzene using indigenous wetland bacteria and the WBC-2 dechlorinating consortium, Ninth International Conference Remediation of Chlorinated and Recalcitrant

Lorah, M.M. and Teunis, J., 2014, Biogeochemical measurements to characterize dual anaerobic and aerobic biodegradation processes for remediation of chlorinated benzenes in a wetland, Geological Society of America Annual Meeting, Vancouver, Canada, October 19-22. 

Cozzarelli, I.M., Akob, D.M., Dunlap, D.S., Rowan, E.L., and Lorah, M.M., 2014, Organic composition and microbiology of produced waters from Pennsylvania shale gas wells, Goldschmidt Conference, June 8-13, Sacramento, California. 

Akob, D.M., Cozzarelli, I.M., Dunlap, D.S., Rowan, E.L., and Lorah, M.M., 2014, Organic composition and microbiology of produced waters from Pennsylvania shale gas wells, 9th International Symposium on Subsurface Microbiology, October 5-10, Pacific Grove, California.

Lorah, M.M., and Walker, C.W., 2013, Use of fixed-film bioreactors to evaluate natural and enhanced bioremediation of chlorinated benzenes, ethanes, and ethenes with varying groundwater conditions, 2nd International Symposium on Bioremediation and Sustainable Environmental Technologies, June 10-13, Jacksonville, Florida. 

Lorah, M.M., and Walker, C.W., 2013, Evaluation of bioremediation of chlorinated benzenes and benzene by a native wetland microbial community and a bioaugmented anaerobic culture, 20th International Petroleum Environmental Conference, November 12-14, San Antonio, Texas.

Lorah, M.M., Walker, C.W., and Baker, A.C., 2012, Anaerobic bioreactor system for treatment of groundwater contaminated with chlorinated volatile organic compounds, 244th American Chemical Society National Meeting & Exposition, August 19-23, Philadelphia, Pennsylvania.

Lorah, M.M., Walker, C.W., Brayton, M.J., and Cozzarelli, I.M., 2012, Biogeochemical controls on degradation of chlorobenzenes in a wetland, Geological Society of America Annual Meeting, Charlotte, North Carolina, November 4-7. GSA Abstracts with Programs Vol. 44, No. 7. 

Lorah, M.M., Walker, C., Teunis, J., Graves, D., and Schneider, W., 2011, Transformation products and rates for chlorinated ethanes and ethenes by an anaerobic dechlorinating consortium, International Symposium on Bioremediation and Sustainable Environmental Technologies, Reno, Nevada, June 27-30. Invited.

Lorah, M.M., Walker, C., Brayton, M., Gebhart, F.E., 2011, In situ microcosm studies of intrinsic and enhanced degradation of organic contaminants in a fractured rock aquifer and in wetland porewater, Geological Society of America Annual Meeting, October 9-12, GSA Annual Meeting, Abstracts with Programs, Vol. 43, No. 5, p. 344.  Invited.

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