Tuesday, April 30, 2013: 1:55 p.m.
Regency West 5 (Hyatt Regency San Antonio)
Steven C. Young, Ph.D., PG, PE, INTERA Inc.
Matthew J. Tonkin, S.S. Papadopulos and Associates Inc.
Van Kelley, INTERA
Marinko Karanovic, S.S. Papadopulos & Associates Inc.
Wade Oliver, INTERA Inc.
In Texas, approximately a hundred Groundwater Conservation Districts (GCDs) have the responsibility for establishing rules for minimum spacing between pumping wells and for evaluating the potential impacts to groundwater resources caused by permitted wells. Fulfillment of this responsibility is difficult with numerical models and especially those developed for regional assessment with grid spacings greater than 1 square mile. Among these difficulties is the required professional expertise and the possible inaccuracies associated with applying numerical codes to simulate pumping impacts among closely spaced wells. To assist GCDs with addressing groundwater issues, an analytical element model was developed that provides the capability to quickly and accurately simulate pumping impacts. Among the powerful features of the analytical model are a well bore function that solves for flow in the well bore and aquifer simultaneously, the ability to handle multiple aquifer layers with different properties, and the capability to superimpose the drawdown impact caused by numerous pumping wells with different pumping schedules. The presentation will overview the development of the analytical element model and will focus on its application to support GCDs’ evaluation of well spacing rules and permits for pumping wells.
| Steven C. Young, Ph.D., PG, PE
, INTERA Inc.
|
|
|
Steven Young has 30 years of experience in characterizing and modeling groundwater systems. Young completed his graduate studies at Stanford University and the University of Waterloo. His expertise includes developing groundwater models and applying parameterization estimation methods to improve the predictive accuracy of groundwater models. He has worked extensively in the Texas Gulf Coast Aquifer System for the last 10 years.
|
| Matthew J. Tonkin
, S.S. Papadopulos and Associates Inc.
|
|
|
Matt Tonkin has been with SSP&A for 15 years. His focus is on the design of data gathering efforts; the synthesis and interpretation of data; and, the application of models to support decision-making. He has completed contracts to the USGS, USEPA and California Department of Water Resources in the areas of contaminant transport and model uncertainty analysis. Matt is a former member of the Interstate Technology Research Council (ITRC) MTBE team.
|
| Van Kelley
, INTERA
|
|
|
Van Kelley is a Senior Hydrogeologist with Intera Inc. in Austin, Texas. He has 27 years of experience in groundwater modeling and groundwater characterization experience. Kelley currently is a vice president of Intera and he is the manager of the Intera Water Resources Division.
|
| Marinko Karanovic
, S.S. Papadopulos & Associates Inc.
|
|
|
Mr. Karanovic has technical expertise in hydrogeology, numerical groundwater programming, and modeling. He has worked with steady-state and transient groundwater flow models to assess flow and transport of contaminants at Superfund Sites. He has also developed original codes for simulating groundwater flow, contaminant, and heat transport in a hydrocarbon spill on Antarctica's ice cover. He is an experienced EVS user and has developed a number of utilities to facilitate the creation of EVS animations from groundwater modeling software. He also developed KT3D_H2O, a custom GUI for the GSLIB KT3D program incorporating analytic elements and particle-tracking in capture zone analyses.
|
| Wade Oliver
, INTERA Inc.
|
|
|
Wade Oliver, PG, is a hydrogeologist with INTERA Inc. in Austin, Texas focusing on the characterization and modeling of groundwater systems for local and regional groundwater management entities. He has a B.S. in environmental geoscience from Texas A&M University and an M.S. in geology from the University of Utah. Prior to joining INTERA in 2012, he was a geoscientist with the Texas Water Development Board where he was the technical lead for over 90 projects evaluating aquifer recharge, groundwater-surface water interaction, inter-aquifer flow, and future groundwater conditions and availability for groundwater conservation districts in Texas
|
