Glenn Duffield Email & Phone Number

Reston, Va

My responsibilities at HydroSOLVE, Inc., include the ongoing development and maintenance of AQTESOLV, the world's leading software for the analysis of aquifer tests. Customers also receive technical support for the software and aquifer testing advice directly from me.I enjoy spending time each year as an instructor at short courses that provide professionals with continuing education in groundwater science: ✔ AQTESOLV training ✔ aquifer testing field methods and data analysis techniques ✔ fractured bedrock hydrologyIn recent years, I have conducted aquifer testing short courses, in-house seminars and online training for customers in the US, Canada and Australia.I also provide consulting services relating to aquifer testing, groundwater modeling and litigation support.Follow HydroSOLVE and AQTESOLV on LinkedIn for periodic updates with useful tips on water resources issues, aquifer testing and AQTESOLV!

Reston, Va

I was a co-founder of the Geraghty & Miller (now ARCADIS) Modeling Group which directed the firm's high-level groundwater modeling projects and software development activities.My role at the Modeling Group included the following project management and technical responsibilities: ✔ expert witness testimony ✔ litigation support ✔ aquifer testing ✔ specialized groundwater modeling software development ✔ management and performance of groundwater flow and solute transport modeling investigationsWhile employed at the Geraghty & Miller Modeling Group, I developed AQTESOLV, the world-renowned aquifer test analysis software that was first released for sale in 1989.

Herndon, Va

At GeoTrans, I performed three-dimensional numerical modeling to investigate groundwater flow and solute transport at a number of sites including a landfill in Ohio; a VOC contamination site in Massachusetts; and a major DOE facility in South Carolina.I also developed an automatic parameter estimation code for three-dimensional groundwater flow systems that was applied successfully at the Savannah River Site in South Carolina.My responsibilities at GeoTrans included the following: ✔ groundwater flow modeling ✔ solute transport modeling ✔ code development

Annapolis, Md

During my tenure with Geraghty & Miller (now ARCADIS) in Annapolis, MD, my wide-ranging responsibilities in groundwater investigations included both field work and quantitative analysis: ✔ pumping test data collection and analysis ✔ slug test data collection and analysis ✔ mathematical modeling ✔ well installation ✔ groundwater sampling ✔ construction oversight of a 2100-ft remediation trench

M.S., Hydrogeology

My master's thesis at Penn State investigated the effect of land use changes on the discharge from an abandoned underground coal mine.

B.S., Geology

While earning my undergraduate degree at Juniata, I spent my junior year abroad studying geology at the Philipps University in Marburg.