Tools and Techniques to Measure the Performance of a Well (#870)

Presented on Thursday, November 12, 2015

Obtain both an overview of the leading causes for decreasing well performance — which can have several unwelcome consequences including reduced water supply for public supply wells and longer remediation timeframes for pump-and-treat remediation wells — and what may be done to correct them during this hour-long online offering.

You will learn about various chemical/biological/physical tools and techniques that can be used to qualitatively and quantitatively assess well performance over time. In addition to the traditional measurement techniques, you will be presented a spreadsheet-based tool that uses convolution-based techniques to estimate water levels in a pumping well based on pumping at the well (and at neighboring wells), fluctuating river stages in the vicinity, and changing well efficiencies. You will also receive recommendations on maintaining well performance.

Learning objectives

During this webinar, you will learn about:

•The leading causes of decrease in well performance
•Chemical and biological measurement techniques for assessing well performance
•Physical techniques for assessing well performance
•Recommendations for restoring/maintaining well performance

Thomas E. Ballard, PG, CHG
Taber Consultants
Thomas E. Ballard, PG, CHG, principal hydrogeologist at Taber Consultants, a groundwater resources, geotechnical, and environmental consulting firm with offices in West Sacramento, California, and Murfreesboro, Tennessee, is a registered professional geologist in California, Louisiana, and Tennessee, and a certified hydrogeologist in California. 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. 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. He holds a B.A. in geology from the University of Montana and an M.B.A. from the University of Colorado.
Prashanth Khambhammettu, PE
SS Papadopulos & Associates Inc, Bethesda, MD
Mr. Khambhammettu is experienced in handling various facets of water resources project work including data organization / analysis, conceptual model development, numerical modeling, and documentation, for groundwater and surface water flow evaluations and contaminant investigations. He has significant experience with groundwater modeling codes (MODFLOW, MODFLOW-SURFACT), surface-water modeling codes (HSPF, HEC-RAS, HEC-HMS, and TR-55) and integrated groundwater-surfacewater modeling codes (MODHMS, MIKE-SHE). He has experience working for various state agencies in Florida and federal agencies. His background also includes risk assessment work for the US EPA. He is a licensed Professional Engineer in Maryland.
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