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1. A Novel Method for Conducting a Geoenvironmental Assessment of Undiscovered ISR-Amenable Uranium Resources: Proof-of-Concept in the Texas Coastal Plain

Author

Tanya J. Gallegos, Victoria G. Stengel, Katie Walton-Day, Johanna Blake, Andrew Teeple, Delbert Humberson, Steven Cahan, Douglas B. Yager, and Kent D. Becher

Subjects
uranium mining, geoenvironmental assessment, uranium resources, in situ recovery (ISR), Texas Coastal Plain, mineral resources, Mineralogy, QE351-399.2
Abstract

A geoenvironmental assessment methodology was developed to estimate waste quantities and disturbances that could be associated with the extraction of undiscovered uranium resources and identify areas on the landscape where uranium and other constituents of potential concern (COPCs) that may co-occur with uranium deposits in this region are likely to persist, if introduced into the environment. Prior to this work, a method was lacking to quantitively assess the environmental aspects associated with potential development of undiscovered uranium resources at a scale of a uranium resource assessment. The mining method of in situ recovery (ISR) was historically used to extract uranium from deposits in the Goliad Sand of the Texas Coastal Plain. For this reason, the study’s methodology projected the following types of wastes and disturbances commonly associated with ISR based on historical ISR mining records: the mine area, affected aquifer volume, mine pore volume, water pumped and disposed during uranium extraction and restoration, and radon emissions. Within the tract permissive for the occurrence of undiscovered uranium resources, maps and statistics of factors were derived that indicate the potential contaminant pathways. The percentage of days meeting the criteria for air stagnation indicate the potential for radon accumulation; the geochemical mobility of COPCs in groundwater in combination with effective recharge indicates the potential for infiltration of surface-derived COPCs; the geochemical mobility of COPCs in groundwater combined with hydraulic conductivity indicates the propensity for transmitting fluids away from contaminated or mined aquifers; and finally, geochemical mobility of COPCs in surface water combined with the factor for climatic erosivity (R factor) indicates the potential for COPCs to persist in surface waters due to runoff. This work resulted in a new methodology that can be applied to any undiscovered mineral resource to better understand possible wastes and disturbances associated with extraction and identify areas on the landscape where COPCs are likely to persist.

Published
2022
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2. New Geochemical Framework and Geographic Information System Methodologies to Assess Element Occurrence, Persistence, and Mobility in Groundwater and Surface Water

Author

Johanna M. Blake, Katherine Walton-Day, Tanya J. Gallegos, Douglas B. Yager, Andrew Teeple, Delbert Humberson, Victoria Stengel, and Kent Becher

Subjects
in situ uranium, metal mobility, environmental conditions, geochemical mechanisms, Mineralogy, QE351-399.2
Abstract

This study presents a geochemical framework and geographic information system (GIS) method for assessing the intrinsic potential of surface water and groundwater to mobilize arsenic, molybdenum, selenium, uranium, and vanadium. The method was created using published groundwater and surface water geochemical data from the National Uranium Resource Evaluation database for 2302 groundwater and 915 surface water samples. The method was evaluated using published groundwater geochemical data from the Texas Water Development Board. Geochemical data were analyzed in GIS. Samples were categorized by environmental condition, which was determined by using reduction–oxidation—as indicated by pe—and pH ranges for each sample based on geochemical mobility frameworks developed by Smith (2007) and Perel’man (1986). Reduction–oxidation and pH influence the occurrence, persistence, and mobility of arsenic, molybdenum, selenium, uranium, and vanadium in groundwater and surface water. Reduction–oxidation categories were assigned to water samples using concentrations of redox-active constituents, including dissolved oxygen, iron, manganese, and sulfur. The presence of iron substrates and hydrogen sulfides were considered in relation to mobility mechanisms. Twelve-digit hydrologic unit code (HUC) boundaries were used in GIS as analysis areas to determine the most commonly occurring environmental condition in each HUC. The resulting maps identify the environmental conditions in different areas that can be used to identify where the elements are mobile. This methodology provides a systematic approach to identify areas where elements in groundwater and surface water may occur and persist and may be transferable to other locations.

Published
2022
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3. Gradient Self-Potential Logging in the Rio Grande to Identify Gaining and Losing Reaches across the Mesilla Valley

Author

Scott Ikard, Andrew Teeple, and Delbert Humberson

Subjects
self-potential, temperature, conductivity, surface water, groundwater, groundwater and surface water interactions, Hydraulic engineering, TC1-978, Water supply for domestic and industrial purposes, TD201-500
Abstract

The Rio Grande/Río Bravo del Norte (hereinafter referred to as the “Rio Grande”) is the primary source of recharge to the Mesilla Basin/Conejos-Médanos aquifer system in the Mesilla Valley of New Mexico and Texas. The Mesilla Basin aquifer system is the U.S. part of the Mesilla Basin/Conejos-Médanos aquifer system and is the primary source of water supply to several communities along the United States–Mexico border in and near the Mesilla Valley. Identifying the gaining and losing reaches of the Rio Grande in the Mesilla Valley is therefore critical for managing the quality and quantity of surface and groundwater resources available to stakeholders in the Mesilla Valley and downstream. A gradient self-potential (SP) logging survey was completed in the Rio Grande across the Mesilla Valley between 26 June and 2 July 2020, to identify reaches where surface-water gains and losses were occurring by interpreting an estimate of the streaming-potential component of the electrostatic field in the river, measured during bankfull flow. The survey, completed as part of the Transboundary Aquifer Assessment Program, began at Leasburg Dam in New Mexico near the northern terminus of the Mesilla Valley and ended ~72 kilometers (km) downstream at Canutillo, Texas. Electric potential data indicated a net losing condition for ~32 km between the Leasburg Dam and Mesilla Diversion Dam in New Mexico, with one ~200-m long reach showing an isolated saline-groundwater gaining condition. Downstream from the Mesilla Diversion Dam, electric-potential data indicated a neutral-to-mild gaining condition for 12 km that transitioned to a mild-to-moderate gaining condition between 12 and ~22 km downstream from the dam, before transitioning back to a losing condition along the remaining 18 km of the survey reach. The interpreted gaining and losing reaches are substantiated by potentiometric surface mapping completed in hydrostratigraphic units of the Mesilla Basin aquifer system between 2010 and 2011, and corroborated by surface-water temperature and conductivity logging and relative median streamflow gains and losses, quantified from streamflow measurements made annually at 16 seepage-measurement stations along the survey reach between 1988 and 1998 and between 2004 and 2013. The gaining and losing reaches of the Rio Grande in the Mesilla Valley, interpreted from electric potential data, compare well with relative median streamflow gains and losses along the 72-km long survey reach.

Published
2021
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4. Development and Description of a Composite Hydrogeologic Framework for Inclusion in a Geoenvironmental Assessment of Undiscovered Uranium Resources in Pliocene- to Pleistocene-Age Geologic Units of the Texas Coastal Plain

Author

Andrew Teeple, Kent Becher, Katherine Walton-Day, Delbert Humberson, and Tanya Gallegos

Subjects
Geology, Geotechnical Engineering and Engineering Geology, hydrogeologic framework, uranium resources, geoenvironmental assessments, environmental health, groundwater, Texas Coastal Plain
Abstract

A previously completed mineral resources assessment of the Texas Coastal Plain indicated the potential for the future discovery of uranium resources. Geoenvironmental assessments that include the hydrogeologic framework can be used as a tool to understand the potential effects of mining operations. The hydrogeologic framework for this study focused on the composite hydrogeologic unit of the tract permissive for the occurrence of uranium consisting of the upper part of the Miocene-age Fleming Formation/Lagarto Clay, Pliocene-age Goliad and Pleistocene-age Willis Sands, Pleistocene-age Lissie and Beaumont Formations, and Holocene-age alluvial sediments (fluvial alluvium and eolian sand deposits). This composite hydrogeologic unit, which contains the Chicot and Evangeline aquifers of the Gulf Coast aquifer system, is intended for inclusion in a regional-scale geoenvironmental assessment of as yet undiscovered uranium resources. This article provides (1) a brief literature review describing the geologic and hydrogeologic settings, (2) the methodology used to develop a composite hydrogeologic framework, and (3) descriptions and maps of the land-surface altitude, composite hydrogeologic unit base and midpoint depth, water-level altitude, depth of water, unsaturated and saturated zone thickness, and transmissivity and hydraulic conductivity. A composite hydrogeologic unit, created by combining geologic and hydrogeologic data and maps for individual geologic and hydrogeologic units, is intended for use as a tool in a geoenvironmental assessment to evaluate potential contaminant migration through various avenues. Potential applications include using the hydrogeologic framework as an input into a geoenvironmental assessment to help estimate the potential for (1) runoff of contaminants into surface water, (2) infiltration of contaminants into the groundwater (aquifers), or (3) movement of contaminants from the mining area through wind, groundwater-flow, or streamflow in a given permissive tract. The procedures outlined in this paper also provide a method for developing hydrogeologic frameworks that can be applied in other areas where mining may occur.

Published
2022
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5. SAGEEP 2017 papers with only a paragraph abstract

Author

Christopher Arp, Frank Jalinoos, Sarah Moriarty, Esben Auken, Jordan K. Harding, Douglas LaBrecque, Robin Glas, Ryan North, Aaron Davis, Laura Sherrod, Bitnarae Kim, Garth Richards, Frederick Day-Lewis, Daniel LaBrecque, Qian Yin, Thomas Mejer Hansen, Jason Payne, Jeanne LeFebvre, Richard Krahenbuhl, Isaac Fage, Adnan Aydin, Robin Dornfest, Carl-Axel Triumf, Nobuhito Nagai, Myles Danforth, Paul Bedrosian, Sue Natali, Alain Plattner, Moones Alamooti, Hongchun Yao, Nicholas Sowko, Marvin Speece, Carole D. Johnson, Shane Mulè, Jill Densmore, Daniel Richter, Austin Keller, Nathan Davis, Allen Bondurant, William Doll, Jean M. Legault, Austin Carey, Vivek Anand, Koichi Hayashi, Judy Robinson, Paul Nelson, Edward Muller, Elchin Jafarov, Brian Ham, Kira Dickey, Isabelle Cozzarelli, Kivanc Sabunis, Shishay Kidanu, Trevor Irons, Aaron Cahill, Jared D. Abraham, Nathan Smith, Philip Reeder, Roger Michaelides, Chih-Ping Lin, Tim Sickbert, Forrest Kunkel, Mohamed G. Abdelsalam, Andrew D. Parsekian, Katherine Grote, Mark Oliver, Shaoqin Sun, Kit Miyamoto, Eiichi Fukushima, Shaul Hurwitz, Shan Dou, Jason Cox, Brady Flinchum, Kevin Bjella, Terrance Delisser, Roy Bowling, Adam Ward, David Beckendorff, David Palandro, Nikolas Gazo, Jan Francke, Upasna Chandarana, Bojan Milinic, Yin Jeh Ngui, Anders Lund, Paul O'Neill, Payman Hajiani, Sean Wagner, Torleif Dahlin, Phil Sirles, Timothy Munday, Colby Steelman, Lena Persson, Justin Kulongoski, Robert R. Stewart, Geoff Pettifer, Graham Jenke, Mats Lundh Gulbrandsen, Leanne Hanson, Doug Laymon, Chun-Hung Lin, Robert Thompson, Dave Walsh, Matthew Struckhoff, David O. Walsh, Akpofure Orubu, Mike Müller-Petke, Geoffrey Plastow, Anna Wagner, John Cherry, Emine Avci, Ryan Harmon, Peter Dahlqvist, Dung Nguyen, Martial Morrison, Annette Hein, Barbara Bekins, Somaria Sammy, Dylan Rose-Coss, Kevin Schaefer, Myung Jin Nam, Hannuree Jang, Yang Lei, Xuefeng Zhao, Toni Ivey, Jay Silverstein, Thomas McKenna, Sarah L. Codd, Jalf Salima, Timothy Nedwed, John H. Bradford, Ryan Brumbaugh, Melvyn Best, Nathan Campbell, Donovan Capes, Ahmed Ismail, Sarah Ludwig, Maneh Kotikian, Chad Cote, Fethi Ahmet Yuksel, Steven Jepsen, Jakob Juul Larsen, Hangilro Jang, Cullen Pickens, Mark Seyfried, Andrew Black, Elizabeth Screaton, Timothy deSmet, Richard Smith, Burke J. Minsley, Jonathan E. Nyquist, Rujun Chen, Paul Bauman, Barry Freifeld, Leonard Kalindekafe, Dale F. Rucker, David Smith, Juan Carlos Laya, Brian Bird, Sevket Donmez, Esther Babcock, Jackie Randell, E. Michael Chapa, Daphne Szutu, Neil Anderson, John W. Lane, Mark Hudson, Kelly Devlin, Eileen Martin, Marios Karaoulis, Jeffrey Paine, Jeffrey Munsey, Nigel Crook, Stephen Altobelli, Micah Mayle, Camilla Soerensen, Kevin Mitchell, Pauline Kessouri, Benjamin Jones, Mohamed Khalil, Elliot Grunewald, Scott Ikard, Dominic Monarco, Juan Lorenzo, Bruce Wylie, Ross Groom, Mark Panning, Jon Seligman, Gary Robbins, Robert Crowder, Dylan Klazinga, Tony Endres, Khori Newlander, Stefan Kropidlowski, Raphael Dlugosch, Clifford Voss, Folarin Kolawole, Pavel Tishin, M. Andy Kass, Dario Grana, Robert Moucha, Isaac Stephens, Holly Barnard, Mahmut Ziya Gorucu, Mark Conradi, Niels Claes, Craig J. Hickey, David Miller, Kevin Hon, Kathryn Decker, Arthur Gelvin, Jeffrey Cook, Jeffrey McKenzie, Brian Cubbage, Beth Parker, Yukio Tobe, Brian McPherson, Estella A. Atekwana, Ashley Richardson, Christopher Buckman, Rongyi Qian, Andrew Teeple, Bryant Robbins, Khamis Haramy, Neil Lester, Dimitrios Ntarlagiannis, Nathaniel Lindsey, Ken Sims, Bradley J. Carr, Jim Pfeiffer, Flemming Jørgensen, Laura Toran, Andrea Creighton, Jennifer Rover, Adrienne J. Phillips, Rebecca Travis, Richard Freund, Jesper Pedersen, Afshin Aghayan, Seo Young Song, Alexander Prikhodko, James Oliver, Evgeniy Torgashov, Len Mankowski, Matthew Wise, Kristina Keating, Kathleen Cameron, Russell Brigham, Mark Everett, Neal J. Pastick, Jeffrey R. Kennedy, Seiichiro Kuroda, Gail Heath, Marco de Kleine, Ginger B. Paige, Martin A. Briggs, Ryan Banta, Lin Liu, Hirotaka Saito, Jacob Sheehan, Raymond Russo, Theis Raaschou Andersen, Austin Robbins, Sean Schaefer, Lyndsay Ball, Nicholas Zaremba, Gregory Stanton, John Mundell, Catherine M. Kirkland, Victor Nyalugwe, Stephanie James, Carol Finn, Ruijie Shen, Bryan Mark, Andrew Fletcher, Mitchell Craig, Kerim Avci, James C. Cannia, Josip Adams, A.C. Chen, W. Steven Holbrook, Daniel Laó-Dávila, Hans Thomann, Geoffrey Cromwell, Zhiyuan An, William Sauck, Theodore H. Asch, Adam Smiarowski, Santosh Panda, Braden Hrencher, Peeter Pehme, Hsing-Chang Liu, David Hallman, Lee Slater, Michelle Walvoord, Mario Carnevale, Ric Federico, Sean Hussey, William Ampomah, Thomas Daley, Celia Kennedy, Mike Culig, Stuart Norton, Jeannot Ngalamo, David Buesch, Christian Aneke, Timothy Eadie, Erika Beam, Moe Momayez, Jonathan Ajo-Franklin, Thomas Guenther, Bill Brown, Alastair McClymont, Denys Grombacher, Kamini Singha, Tom Martlev Pallesen, Gianfranco Morelli, Ian Ekblaw, Yaoguo Li, Travis Nielson, Mohammad Mohammadi, Torben Bach, Christopher Holmquist-Johnson, Arnd Obert, Andres Kozlowski, Rikke Jacobsen, Patrick Chindandali, Edward Collins, Giulio Vignoli, Shawn Ryan, Jacob Lowenstern, Stephanie Phillips, Craig Ulrich, Jodie Mead, Laura Lautz, Haroon Tayyab, Charles Stanford, Kevin Parkman, Diego Domenzain, David Vales, Michael N. Gooseff, Christopher W. Smith, Ye Zhang, Toshiki Iwasaki, Lewis Land, Harry Jol, Michael Kalinski, and Jason Heath

Subjects
Philosophy, Paragraph, Linguistics
Published
2017

6. Hydrogeophysics

Author

Paul Bauman, Franklin Koch, Rosa La, Landon Woods, Marco de Kleine, Marios Karaoulis, Jelle Buma, Pieter Doornenbal, Elliot Grunewald, Dave Walsh, Peter Turner, Ilya Frid, M. Andy Kass, Benjamin Bloss, Kenneth Williams, Rambhatla G. Sastry, Arushi Saxena, Andrew Teeple, Scott Ikard, Wade Kress, John Jansen, Koichi Hayashi, Seth Shuler, Mitchell Craig, Li Fan, Xie Mengying, Li Zhenyu, and Aaron Davis

Published
2016

7. Tuesday March 24th Posters

Author

Merritt Turetsky, Pan Jianwei, Osman Cagatay Aytekin, Tom Lorsenson, Timothy Walsh, Gilles Porel, Eugénie Euskirchen, Québec Bernard Giroux, Mahmut Ziya Gorucu, Issam Bakari, Kerim Avci, Can Avci, Charles A. Cravotta, Zeynep Mercangoz, Jason Payne, Mark W. Blohm, Chrstopher Conaway, Pasquale Greco, Peter Swarzenski, Li Zhenyu, Emine Avci, Erkan Konyar, Alex Spielman, Justin E. Peach, Andrew Teeple, Fethi Ahmet YukselL, Jean Luc Mari, Pavia Fabio Colantonio, Peng Yao, David McGuire, Patrizio Torrese, Kubra Erguven, Venice Goetz, Nevhiz Koyukan, Cordell Johnson, Sonia Thiboutot, Nihan Hoskan, Joseph Schilter, Peng Li, Max W. Zelenevich, Jonathan Thomas, Mario Luigi Rainone, Laura Sherrod, Koichi Hayashi, Hasan Fehmi Sahin, Mustafa Saribudak, Mark Waldrop, John E. Jenkins, Gregory Stanton, Recep Cakir, F. Les Clarke, and Terran Gufler

Published
2015

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