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On-Demand Webinars


AQUIFER AND AQUITARD HETEROGENIETIES:
Understanding Environmental Sequence Stratigraphy
for Glacial Deposits


Aquifer heterogeniety is among the largest challenge for constructing the Conceptual Site Model and understanding ground water movement and contaminant migration. The 2017 USEPA report about Environmental Sequence Stratigraphy states it may be THE largest challenge and that the solution is applying principles of sequence stratigraphy to provide geologic context.

Despite the validity about the challenges of aquifer heterogeneity and finding a meaningful solution through geologic principles, glacial deposits require additional attention to scale of depositional processes, stratigraphic unit definition, and post-depositional weathering effects.

For glacial deposits, aquitards play a major role in the ground water flow regime; but the secondary permeabilities originating from oxidation and weathering complicate ground water movement and can impact the hydraulic integrity of aquitards.

Plus, many field staff are simply not trained on identifying depositional environments or deciphering subsurface relationships from boring to boring. Boring log quality reflects staff skills about defining geologic units, unit correlation, geologic context leading to unit variability or uniformity, and environmental sequence stratigraphy.

If that's not daunting enough, multiple sequences from successive glacial advances or in contrast, glaciofluvial and glaciolacustrine depositional environments often lead to subsurface uncertainty at project completion.

This webinar series is designed to step you through the process of learning how depositional environments and post-depositional weathering impacts ground water movement and contaminant migration. The Series will demystify conventional wisdom about building Conceptual Site Models based solely on grain-size and associated matrix-permeabilities.

Webinar Topics:

  • Principles of aquifer and aquitard heterogeneity in glacial deposits.
  • Overview of glacial stratigraphic architecture that yield uniform or variable sediments.
  • How scale of deposition relates to glacial facies models, when to lump or split samples.
  • Ground water movement, water tables, potentiometric surfaces, and vertical flow nets.
  • What is needed beyond basic Environmental Sequence Stratigraphy for glacial deposits.
  • Field work flow strategies that help staff make sound observations and field decisions.
  • Basics of measuring aquitard integrity.

What does taking the mystery out of such complex glacial deposits require? An understanding of glacial stratigraphy, glacial depositional environments, and the magnitude of any post-depositional weathering alteration.


[Aquifer and Aquitard heterogenties (or uniformities) are controlled
by their depositional environment.]


"(Part One, Aquifer and Aquitard Heterogeneity) was a great webinar and it has definitely given our group some topics for discussion. Looking forward to the upcoming webinars."
- Sara Nelson, Minnesota Pollution Control Agency.


"This webinar covers important material new to the more junior staff and provided the opportunity for a review of key concepts for the more experienced people. It shows the importance of understanding glacial depositional environments when interpreting glacial sediments."
- David Edwards, Canadian Natural Resources Limited


"The training webinars are of high quality. They were easy to use... We projected our webinars to a large screen TV mounted on the wall in our conference room. We had good clarity for sound and picture...

The content was also appropriate. Personally, I liked the overall message that high quality soil boring logs are essential to better understanding of site characterizations. How can we adequately assess the nature & extent of environmental impact (and the selected remedial actions) without adequate site characterizations."

- Mark Nichter, US Army Corp of Engineers



Instructors Bio

David Hart, PhD, PG

Dave Hart Ph.D. is a hydrogeologist/geophysicist with the Wisconsin Geological and Natural History Survey and an associate professor at the University of Wisconsin-Extension. His work includes regional groundwater flow and recharge in southeastern Wisconsin, near-surface geophysics, and measurement of porosities and permeabilities in aquifers and aquitards. Prior to joining the university, he served as a hydrogeologist with Eder Associates. He is an associate editor for Ground Water and past president of the AWRA - Wisconsin Section.





Dan Kelleher, PG, CIPM

Dan Kelleher, PG, CIPM is a consulting hydrogeologist and project manager focuses on the technical areas of quantitative hydrogeology (in porous and fractured media), geotechnical analysis of sedimentary sequences, aquifer testing, fractured rock hydrogeology, and predictive ground water modeling. Dan's business acumen promotes personal trust, integrity, and relentless QA/QC.

Dan started his career at Waste Management Corporate Headquarters in Oak Brook, Illinois. His worked allowed him to test geologic concepts about sedimentary processes during large-scale excavation and fill design, environmental and geotechnical investigations, ground water monitoring system design.

Dan also leads specialized technical teams establishing best practices and teaching educational courses and webinars for geologists, engineers and environmental scientists. He and Tim Kemmis are the co-founders of Midwest GeoSciences Group which helps professionals to do better job of TAKING THE MYSTERY OUT OF THE SUBSURFACE. He and Tim believe in that tagline so strongly that they own it as a federally-registered trademark.

Midwest GeoSciences Group allows Dan to help people not only be better scientists and engineers, but become better people. It is a privilege to collaborate with people on a spectrum of topics ranging from field tool development to cutting-edge engineering advances to environmental regulation input. Dan is motivated by serving others in order to fulfill our human purpose and achieve responsible global stewardship.



Fee: 249.00 USD Per Webinar

  You're SAVING $50 USD just for being a Member

Downloads: Session Slides (PDF)
Additional Files (PDF)
  • Correlation Exercise

Record of Attendance Form (PDF)

Number of Participants: Unlimited from a single computer (Broadcast webinar in your conference room or auditorium for no extra charge)

Continuing Education Certificates: Unlimited. $14.95 each. Official CEU certificates are available as an option and only available at the time of webinar participation from Northern Illinois University. Ordering steps are given at time of webinar order.

Access: On-demand, anytime 24/7.
Access Duration: 24 hours.

Discounts: Buy 3 on-demand webinars, and get 3 on-demand webinars for free!

Duration: 90 minutes
PDH Earned: 1.5 hours
   
Instructor(s): Dave Hart, PhD and Dan Kelleher, PG, CIPM


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