Tuesday, December 4, 2007 : 2:40 p.m.

Is Time Yet? Knowing When to Regenerate a Ground Water Well

Gilman G. Violette, M.Sc., P.Eng, Neill and Gunter Limited

Groundwater extraction wells require maintenance for long term performance.  When is it time to provide maintenance work on a well?  One year, ten years, fifty years after it is put in production?  The answer will differ for each well, however, all wells require maintenance with objective to regenerate its performance and production.  This presentation will discuss the various signs that provide an indication of when maintenance is required.

Issues that will be presented include looking at indicator parameters such as specific capacity, Walton’s C factor, microbiology and inorganic chemistry.  Trends of those key indicators will be presented and discussed in terms of deciding timing of regeneration treatment.  The presentation will also discuss the environmental long term benefits of keeping a well working rather than lead to abandonment.

 

 

Gilman G. Violette, M.Sc., P.Eng, Neill and Gunter Limited Gil Violette is the Manager of the Environmental Sector at the Neill and Gunter office in Fredericton, New Brunswick. Gil been consulting over 26 years, providing service in the areas of groundwater resources, environmental and geotechnical engineering. Gil manages groundwater supply development projects in the sand and gravel and bedrock aquifers within Atlantic Canada. He received his Masters degree in Groundwater Resources from the University of New Brunswick in 1990. For the past twenty years, Gil has studied potential environmental threats to the aquifer, potential targets for new drill sites and the performance of wells within the Wilmot Park Wellfield.


2007 NGWA Ground Water Expo and Annual Meeting