The Fractured Rock Passive Flux Meter: A New Tool for Characterizing Flux in Fractured Systems
Tuesday, September 24, 2013: 2:10 p.m.
Mark Newman
,
Department of Civil and Coastal Engineering, University of Florida, Gainesville, FL
Kirk Hatfield
,
Department of Civil and Coastal Engineering, University of Florida, Gainesville, FL
Jaehyun Cho
,
Department of Environmental Engineering Sciences, Engineering, University of Florida, Gainesville, FL
Harald Klammler
,
Department of Environmental Sciences and Sustainable Development, Federal University of Bahia, Barreiras, Brazil
Michael D. Annable
,
University of Florida, Gainesville, FL
Beth L. Parker, Ph.D.
,
School of Engineering, G360, University of Guelph, Guelph, ON, Canada
John A. Cherry, Ph.D.
,
School of Engineering, University of Guelph, Guelph, ON, Canada
P. Pehme
,
Earth Sciences, University of Waterloo, Waterloo, ON, Canada
Ryan Kroeker
,
University of Guelph, Guelph, ON
Pierre J. Lacombe
,
U.S. Geological Survey, West Trenton, NJ
Daniel J. Goode
,
U.S. Geological Survey, Exton, PA
Thomas E. Imbrigiotta
,
U.S. Geological Survey, West Trenton, NJ
Fractured rock settings pose substantial economic and technical challenges both to the characterization and remediation of DNAPL source zones. The objective of this project is to demonstrate and validate the fractured rock passive flux meter (FRPFM) as new technology for measuring the magnitudes and directions of cumulative water and contaminant fluxes in fractured rock aquifers. The sensor consists of an inflatable core that compresses a reactive fabric against the wall of a borehole and to any water-filled fractures intersected by a borehole. The reactive fabric is designed to intercept and retain target groundwater contaminants (e.g. PCE, TCE, DCE, and VC); in addition, the fabric releases non-toxic tracers, some of which visibly indicate active fracture location, aperture, orientation, and direction of fracture flow along a borehole, while others quantify cumulative groundwater discharge within the fractures.
Field demonstration tests are ongoing at the Naval Air Warfare Center (NAWC) in West Trenton, NJ. Along with demonstrating the capabilities of the FRPFM, the tests are also being used to compare multiple technologies including, optical televiewer, acoustic televiewer, high resolution temperature logging, and borehole dilution tests. The technologies are being evaluated to generate a collaborative standard operating procedure to optimally identify flowing fractures, determine flow direction, and quantify both water and contaminant mass flux within fractured systems.
Mark Newman, Department of Civil and Coastal Engineering, University of Florida, Gainesville, FL
Kirk Hatfield, Department of Civil and Coastal Engineering, University of Florida, Gainesville, FL
Kirk Hatfield received his BS and MS degrees from University of Iowa and his PhD degree from University of Massachusetts in Amherst. He joined the University of Florida, Department of Civil Engineering in 1987. He currently serves as the Director of the new Engineering School of Sustainable Infrastructure and Environment and Director of the Florida Water Resources Research Center and member of the Board of Directors of the National Institutes of Water Resources. Hatfield’s ongoing research activities are in the areas of aqueous environmental monitoring, contaminant fate and transport modeling in the subsurface, environmental remediation, and water resources systems analysis.
Jaehyun Cho, Department of Environmental Engineering Sciences, Engineering, University of Florida, Gainesville, FL
Harald Klammler, Department of Environmental Sciences and Sustainable Development, Federal University of Bahia, Barreiras, Brazil
Michael D. Annable, University of Florida, Gainesville, FL
Michael Annable is a professor at the University of Florida with interests in groundwater remediation, tracer tests, environmental engineering, and hydrologic science.
Beth L. Parker, Ph.D., School of Engineering, G360, University of Guelph, Guelph, ON, Canada
Beth Parker, Ph.D., University of Guelph Professor in the School of Engineering and Director of the G360 Centre for Applied Groundwater Research, has more than 30 years of experience investigating subsurface contamination at numerous sites around the world, using high resolution data sets for site conceptual model development and testing. Her current research activities emphasize developing improved field and laboratory methods for characterizations and monitoring of industrial contaminants in sedimentary rocks, clayey deposits, and sandy aquifers, and focus on the effects of diffusion in low permeability zones, plume attenuation, and hydrogeologic controls on remediation.
John A. Cherry, Ph.D., School of Engineering, University of Guelph, Guelph, ON, Canada
John Cherry holds geological engineering degrees from the University of Saskatchewan and the University of California Berkley, and earned a Ph.D. in hydrogeology from the University of Illinois. He joined the University of Waterloo in 1971, concentrating on field studies of the migration and fate of contaminants in groundwater, and continues research as a Distinguished Professor Emeritus. He has co-authored the textbook Groundwater and several chapters in the book on dense chlorinated solvents and other DNAPLs in groundwater. He is the Director of the University Consortium for Field-Focused Groundwater Contamination Research and is now based at the University of Guelph.
P. Pehme, Earth Sciences, University of Waterloo, Waterloo, ON, Canada
Ryan Kroeker, University of Guelph, Guelph, ON
Ryan Kroeker has a Bachelors degree in Environmental Studies from the University of Waterloo and a Masters degree in Hydrogeology also from the University of Waterloo. He currently works at the University of Guelph for G360 - The Centre for Applied Groundwater Research as a Field Manager and Research Assistant.
Pierre J. Lacombe, U.S. Geological Survey, West Trenton, NJ
Pierre Lacombe is a hydrologist with the U.S. Geological Survey in West Trenton, New Jersey.
Daniel J. Goode, U.S. Geological Survey, Exton, PA
Dan Goode is a Research Hydrologist with the U.S. Geological Survey in Exton, Pennsylvania.
Thomas E. Imbrigiotta, U.S. Geological Survey, West Trenton, NJ
Thomas Imbrigiotta is a Supervisory Hydrologist with the U.S. Geological Survey. His research interests involve tracking of changes in groundwater geochemistry in fractured rock chlorinated solvent plumes during remediation, determining diffusion rates of contaminants from the primary porosity of fractured rock, and developing groundwater passive diffusion samplers.
