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He has been active in the development and implementation of policy and guidance for the application of natural attenuation to the cleanup of contaminated soil and groundwater for many years, and he has been involved with evaluating natural attenuation at numerous sites, ranging from fuel hydrocarbon releases to landfills. Geological Survey Office of Groundwater, based in Reston, Virginia, where his primary responsibilities are to provide technical support for groundwater-management modeling and studies on groundwater/surface water interactions.

Barden was cochair of the ASTM task group responsible for developing an ASTM standard guide for remediation by natural attenuation. During the past 15 years he has participated in the development of USGS groundwater software such as GWM — a groundwater management process for MODFLOW — and the GSFLOW groundwater/surface water flow model.

Erik Bjornstad is the technical information director for Bell Performance in Longwood, Florida, where he’s in charge of providing technical support and information to Bell Performance’s customers, distributors, and sales associates.

His professional capacities revolve around two primary areas: (1) fuel treatment formulations and testing, and (2) development of technical literature and training to support Bell Performance’s wide range of treatments and problem-solving for all types of fuels. in chemistry at Lee University in Cleveland, Tennessee, and holds an MPH from the University of Tennessee, Knoxville. D., is currently a senior associate with Hazen and Sawyer in Los Angeles, California. recently joined the USDA Agricultural Research Service as a research microbiologist in the Environmentally Integrated Dairy Management Research Unit in Marshfield, Wisconsin.

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.

He plays a prominent role in ASR projects involving both injection wells and land spreading recharge methods, and currently is the lead hydrogeologist for the OASIS program — an ASR project with the goal of annually injecting and recovering 30,000 acre-feet of potable water from a single wellfield. This Colorado company specializes in providing UAS data acquisition services for resource exploration and environmental site characterization. Much of his practicalexperience includes work at sites with commingled (multisource) plumes,vapor intrusion concerns, and property development. in civil (environmental) engineering from the University of Delaware.

Last modified 25-Dec-2019 13:13