Well Rehabilitation and Evaluation
Cost-Effective Methods and Considerations for Water Purveyors

Date:  September 1, 2010
Time: 9:00 a.m. through 11:30 a.m.
Location:  Westin La Paloma Resort and Spa, Tucson, Arizona
Course Fee: $35 for 2.5-hour workshop

In these economically challenging times, many municipalities and private water companies wrestle with the issue of whether or not it would be more cost-effective to mitigate water quality problems through the evaluation and modification of the water supply well, versus taking a more conventional approach such as wellhead treatment, blending, or drilling a new well.  Rehabilitation (structural modification) of a water supply well is significantly less expensive than the alternatives, but for the well rehabilitation to be successful, the goal of the project (water quality improvement) must be accomplished in a technically sound and efficient manner. 

This workshop includes discussions of several available techniques for conducting site-specific well evaluations, and also methodologies and pitfalls related to the structural modifications of water wells.  A brief discussion of aquifer hydraulics will be presented to set the stage for the items being addressed during the well evaluation process.  Basic well evaluation techniques, such as video surveys and flow profiling analyses (both spinner log and dye tracer methods) will be described.  These analytical techniques generally enable the hydrogeologist to determine the groundwater production and water quality from discrete intervals of the well, under both pumping and non-pumping conditions. 

Once a site-specific well evaluation has been performed to characterize the water production and water quality problems, those problems can typically be addressed by structurally modifying the well.  Several approaches to well rehabilitation will be described, and several case studies will be presented.  The track record of water quality improvement via well rehabilitation projects will also be outlined, along with a brief discussion of the need for post-rehabilitation testing to define the new “baseline” conditions after the structural modification has altered the well’s unique hydraulic characteristics.

Instructor : Marvin Glotfelty
Marvin F. Glotfelty, R.G. is a Principal Hydrogeologist and co-founder of Clear Creek Associates.  He received his B.S. and M.S. degrees in Geology from Northern Arizona University, and is a Registered Professional Geologist in Arizona (No. 22744) and California (No. 4988).  He is also a Licensed Well Driller (No. 672) and Licensed Contractor (Type A-4) in Arizona. 
Mr. Glotfelty has been involved with the design, installation, rehabilitation, or abandonment of over 700 water wells in Arizona, and has served as Technical Director of the Arizona Water Well Association since 1990.  Mr. Glotfelty has given over 75 presentations on hydrogeologic and water well topics, and he has authored over 20 publications, including a Dictionary of Driller’s Terms (published by the National Ground Water Association in 2004).  He also provided editorial review of the Water Well Construction and Abandonment chapter of the 3rd edition of Groundwater & Wells (published by Johnson Screens Co., 2007), and in 1995 he received the City of Phoenix Mayor's Environmental Award for his work with rehabilitation of municipal wells to improve their water quality. Most recently, Mr. Glotfelty has been selected as the National Ground Water Association William A. McEllhiney Distinguished Lecturer in Water Well Technology for 2012.

Registration
Advanced registration is necessary for participation in this workshop.  Pre-registration is required to reserve space and receive course materials.  AHS is pleased to be able to offer the workshop at a rate of only $35. Click here to register.