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Alleman's energy and environmental experience includes conventional oil and gas production, as well as water use and water treatment issues related to coal bed natural gas, shale gas, oil shale, processing, and coal. His research interests include development of statistical methods for environmental monitoring data, development of statistical methodology for mental health research, and hypothesis testing and sample size determination for hierarchical linear and nonlinear models. in mathematics and statistics from the University of South Alabama and his M. C., as an environmental health consultant for EPA and OSHA. He spent time in the mining, and oil and gas industries before transitioning to groundwater and environmental consulting where he has a successful track record of innovative approaches to environmental site assessments and groundwater development. in geology from the University of Montana and an M. Barcelona has received a number of awards throughout the United States. Barden is senior hydrogeologist with Hydro Geo Chem Inc.

Previous to his p​osition with the Association, he served as chief of the Office of Groundwater at the U. Alley served as the 2012 David Keith Todd Distinguished Lecturer for the Groundwater Resources Association of California and was named a Fellow of the Geological Society of America in 2009. Alley earned a bachelor's degree in geological engineering from the Colorado School of Mines, a master's degree in hydrogeology from Stanford University, and a doctorate in geography and environmental engineering from the Johns Hopkins University. Anderson has helped pioneer programmatic surveillance of emerging contaminants and issues, as well as provide technical expertise to the U. AF Environmental Restoration Program in the areas of soil science, environmental toxicology, and quantitative data analyses. His current research focuses on groundwater contamination caused by agricultural and industrial activities. Her current research focuses on community-scale geothermal heat pump systems. He's an associate editor for Groundwater Monitoring & Remediation®, an NGWA publication, and has also authored or coauthored numerous papers, book chapters, and reports.

Activity of a radioactive sample is defined as the number of decays per unit second and is measured in Bq: The activity of a sample depends on the decay constant, λ, and the number of isotopes at a given time: At any given time C) of .

Determine the age of a sample based on the following lab measurements: Total mass of carbon in the sample: 500 mg Activity of sample: 174 decays per hour.

With more than 25 years of experience in consulting hydrogeology, he has expertise in groundwater source development, aquifer storage and recovery, water rights consulting, groundwater modeling, regional hydrogeologic definition, and contaminant hydrogeology. Peter Bennett, PG, CHG, lead hydrogeologist and vice president of Haley & Aldrich Inc., has more than 18 years of experience with innovative site characterization and remediation projects.

Play a game that tests your ability to match the percentage of the dating element that remains to the age of the object.He also was a member of a National Research Council committee on intrinsic remediation evaluating the scientific basis for natural attenuation as a remedy and he was also a member of the technical review group for the U. Army's development of a protocol for natural attenuation of explosives. Barlow also coordinates, and is an instructor for, two USGS courses on groundwater/surface water interactions. Barlow is a member of NGWA, and, along with Stanley A. in hydrology from the University of Arizona and a Ph.In addition to teaching for NGWA, Barden is also an instructor for numerous training courses​. He has published numerous reports and papers in the hydrologic sciences during his 30-year career with the USGS, including a 2012 report with Stanley Leake on (U. Leake, was corecipient of the 2014 NGWA John Hem Award for Excellence in Science & Engineering. D in environmental engineering from the University of Connecticut. DOD’s Strategic Environmental Research and Development and Environmental Security Technology Certification Programs. D., is a research professor in the Department of Earth Sciences, University of Waterloo, with more than 20 years experience in the application of isotope techniques in hydrology. He was the 1991 recipient of the Ohio State University Alumni Distinguished Teaching Award.Aryal is coauthor of , second edition, published by Wiley in 2009. She has master's degrees in environmental science and engineering, and sustainable design, and is working on her Ph. Most recently, Ballard has been spreading the word to small water districts on how routine well assessment and maintenance can improve operating efficiencies, reduce costs, and extend the life cycle of their water supply wells. in Tucson, Arizona, and has more than 20 years' experience in the environmental industry.A B C D E F G H I J K L M N O P Q R S T U V W X Y Z David Alleman is an envir​onmental manager with ALL Consulting. Aravena has been a member of the Waterloo Centre for Groundwater Research, a worldwide recognized center of excellence in groundwater studies. in public health from the University of Illinois at Chicago. D., is a professor in the Department of Geological Sciences, Ohio State University, teaching water resources, hydrogeology, hydrogeologic field methods, and numerical modeling. Although Baird expected energy savings to be the big story, hydrogeology and groundwater microbiology became more important for long-term performance, and she is currently working with an NGWA committee in writing Hydrogeologic Guidelines for Large-Scale Geothermal Heat Pump Systems. Barcelona has served as a reviewer and consultant on a wide variety of groundwater- and hazardous waste-related cleanup efforts in the United States, Europe, and the Middle East.

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