Presented by:

Chris Johnson 
Aegis Groundwater Consulting

Visually interpreting downhole water well video images, to explain possible failure mechanisms, will be reviewed through case study presentation. Well yield reductions, sanding issues, and water quality variations can often be attributed to changes in the well condition, which can often be interpreted from downhole video logs. Case studies will review open area clogging, well casing damage, mineral and biological scaling, and sand damage interpretations. This is Part 2 of our three-part series of water well video log use.  Part 3 will look at the interpretation and assessment of well rehabilitation methods, based on video log interpretations.

 
*Early Registration (October 12) is $75 for Members* and $100 for Non-Members*
*Registration after October 12 is $100 for Members* and $125 for Non-Members*

 
SPEAKER BIO:

Chris Johnson, President of Aegis Groundwater Consulting, LLC, has been a practicing professional geologist and hydrogeologist for 31 years.  Mr. Johnson has extensive experience in aquifer characterization, pumping tests, and in particular with well design, construction, maintenance and rehabilitation.  Additionally, Mr. Johnson has developed an expertise in addressing naturally occurring metals such as arsenic and uranium, specifically identifying the presence in the subsurface prior to well construction, and then designing wells that avoid these areas, resulting in water supplies of reduced metals concentrations in areas of significantly elevated groundwater concentrations.  Mr. Johnson is also a recognized expert in the field of well rehabilitation and well reconstruction and has published several articles on well rehabilitation for the National Groundwater Association’s “Water Well Journal”.

MODERATOR BIO:

John Lambie PE, PG, CWRE is a principal hydrogeologist with E-PUR, LLC, a water resource consultancy. John conducts water supply planning with an emphasis on groundwater and conjunctive water use options. He regularly applies his expertise in hydrogeologic modeling, wellfield exploration and design, and many other forms of quantitative analysis. John has experience in evaluating managed aquifer recharge options using surface waters to ensure water-supplies against quantity and quality risks.