Featured @
Featured Items
Shopping Cart
About Contact Blog Site Map
Receive Updates News

Training Packages

Online - Offline CEU Course

Challenges and Strategies for Implementing
Environmental Sequence Stratigraphy

Designed for the individual who performs
hydrogeologic investigations for environmental projects.

For $399 (USD), you'll get:
Three course modules @ 150 min each: 7.5 Contact Hours
Study Material, Tutorials, and Self-Testing: 0.5 Contact Hours
Total: 8.0 Contact Hours.

You MUST be a Member to order this Online/Offline Course.
Please 'Login' or 'Create your Free Member Account' Now.

This course helps apply Environmental Sequence Stratigraphy to your sites. It builds on the principles of Environmental Sequence Stratigraphy and continues with methods to achieve a holistic understanding of
hydrogeologic relationships.

Environmental Sequence Stratigraphy (USEPA, 2017) is a relatively new application of Sequence Stratigraphy to environmental projects. Sequence Stratigraphy is a proven method used mainly in petroleum exploration for mapping coarse- and fine-grained sediment loads by reconstructing sedimentary basin fill processes into individual sequences of deposition related to sediment supply and accommodation.

One premise of Environmental Sequence Stratigraphy is that coarse-grained portions of a heterogeneous aquifers conduct the majority of ground water flow and contaminant migration.

An advantage of Environmental Sequence Stratigraphy is that it is a phased-based approach for discerning aquifer heterogeneity. Stratigraphers leverage existing data collected from soil boring logs, geophysical logs, and/or Cone Penetrometer Testing to recognize vertical trends of grain size distribution and then correlate those patterns into sedimentary facies models. Those models are then used to design ground water monitoring points and remedial action plans.

There are certain challenges in implementing Environmental Sequence Stratigraphy. Despite the proven reliability of Environmental Sequence Stratigraphy for discerning aquifer heterogeneity, the method requires training in Sequence Stratigraphy. Applying ESS requires a basic understanding of depositional processes and the ability to put soil boring observations in the context of depositional environments, processes, stratigraphy, and subsurface relationships.

Some obvious challenges exist, such as ensuring subsurface data is accurate and complete. One problem is that soil classifications and the inferred grain-size data on soil boring logs may not conform to standards, resulting in erroneous stratigraphic interpretation.

Some less obvious challenges exist not only Environmental Sequence Stratigraphy, but also in our hydrogeologic work when it comes to modern problem solving. This course teaches critical strategies to measure "certainty vs uncertainty" in ground water and contaminant movement.

There are no short cuts for establishing the stratigraphic framework.

Strategies for deciphering depositional environments are fundamental to taking the mystery out of the subsurface. But the fundamentals for translating the story the sediments are telling onto soil boring logs remains a challenge. The fall-out from incomplete and/or inaccurate soil boring logs coupled with the financial need to perform work faster has favored High-Resolution Site Characterization (HRSC). HRSC measurements are fast, reproducible and include a manageable procedural analysis. However, subsurface complexities may demand more than just HRSC measurements alone to understand subsurface relationships.

We strive toward a holistic hydrogeologic approach that not only considers the nature of sedimentary sequences, but also post-depositional alterations such as weathering. Examining the entire ground water flow regime allows confidence in prioritizing data gaps, managing uncertainties, and analyzing aquitard integrity. The benefit is greater certainty for understanding ground water flow paths as well as contaminant migration, fate and transport, and receptors.

This course begins by introducing hydrogeologic principles related to Environmental Sequence Stratigraphy and subsurface investigations. It continues with steps for implementing both Environmental Sequence Stratigraphy and other common approaches to defining and characterizing the subsurface. The course builds on this foundation by demonstrating the merits of Environmental Sequence Stratigraphy. It presents step-wise strategies for different regional depositional systems to help participants synthesize the role of stratigraphy and holistic hydrogeology at environmental sites.

How we simply define geologic units at a site
plays a huge role in our ability to unravel
site complexities and build the stratigraphic sequence.

This course reveals unspoken challenges and unveils solutions
for making sense of hydrogeologic relationships.


It will be helpful to have a basic understanding of three references:

USEPA, 2017, Best Practices for Environmental Site Management: A Practical Guide for Applying Environmental Sequence Stratigraphy to Improve Conceptual Site Models; Washington, DC, EPA/600/R-17/293, September 2017. A pdf of the guide (62-pages) can be downloaded at:

USEPA, 2020, Webinar: An Overview of the Fundamentals of Sequence Stratigraphy and its Application to Developing Robust Conceptual Site Models and Remedial Strategies, presented by J. Sadeque, and R. Samuels on January 15, 2020 for USEPA Clu-in (Contaminated Site Clean-up Information). A pdf of the PowerPoint slides and the session audio can be downloaded at:

Chamberlin, T.C., 1890, Method of Multiple Working Hypotheses; pp. 754-759, Published by: American Association for the Advancement of Science. Abbreviated Reprint: Science, Vol. 148, No. 3671. Available online at


Environmental Sequence Stratigraphy and facies models benefit groundwater remediation projects by improving the ability to:

  • Interpret lateral continuity between borehole data and correlate site data in three dimensions;
  • Identify groundwater flow paths and preferential contaminant migration pathways;
  • Map and predict contaminant mass transport (high permeability) and matrix diffusion related storage (low permeability) zones;
  • Identify data gaps and assess the need and cost benefit of high resolution site characterization;
  • Determine appropriate locations and screen intervals for monitoring and remediation wells, and;
  • Improve efficiency of remediating and monitoring of contaminated groundwater.

(Source: USEPA, 2017).


Application of Environmental Sequence Stratigraphy is proven to improve Conceptual Site Models (CSM) and provide a basis for stratigraphic relationships, groundwater flux, and associated contaminant transport.

This course helps apply Environmental Sequence Stratigraphy to your sites. It builds on the principles of Environmental Sequence Stratigraphy and continues with methods to achieve a holistic understanding of hydrogeologic relationships.

Ground water monitoring and remediation design efficiencies are dependent on understanding holistic ground water flow regimes through stratigraphic relationships and effects of post-depositional alterations.

Participants will learn what questions that should be asked - and answered - during a hydrogeologic investigation conducted using Environmental Sequence Stratigraphy. Drilling and sampling strategies and work process is a key component to implementing Environmental Sequence Stratigraphy. This course presents some methods that both simplify and maximize subsurface information for unraveling stratigraphic complexities.

This online course is not a primer for learning Sequence Stratigraphy.

On-Demand Course Modules at Your Own Pace.

The personalized experience allows each registrant to learn (1) at their own experience level, (2) at their own pace, and (3) and in a private setting except when they have questions or request extra tutorials.

Take your time and dive deep into this course experience.

Final Exam and CEU Certificate

The course concludes with a Final Exam. Options for an additional tutorial is available and each registrant receives an official CEU Certificate from Northern Illinois University showing 8.0 Contact Hours.

•  Pre-Course Prerequisite Materials
•  Self-Assessment
•  Three On-Demand course modules
•  Offline Tutorial Activities
•  Final Exam
•  CE Certificate from Northern Illinois University
    (for 8.0 Contact Hours)

Register Now for this unique online course that
demystifies the stratigraphic relationships to
ground water monitoring and contaminant transport.


Take the general, 10-question self-assessment of basic course concepts. Refrain looking up answers, just assess yourself. Submit your test at completion. Individual results will not be shared.

Watch the course modules for the explanation and details for answers. If you want to discuss the answers following any course module, contact Dan Kelleher at to schedule a time together.
Record of Attendance and Continuing Education Units
A free Record of Attendance Form is included with each course module. Complete a form for each module for your own use. Witness signatures are not required for most PG and PE licensure renewals related to continuing education (check the requirements for your license).

A Final Exam is administered on an individual basis, following completion of all three course modules and the tutorials. The course is approved for 8.0 Contact Hours (0.8 CEU) by Northern Illinois University.

Northern Illinois University administers the Course Completion Certificate based on the date a participant completes the Final Exam. NIU distributes the CEU Certificate that is suitable for framing.
Self-Assessments, reference content, tutorials, and recommended resources are accessible using the Online Course Portal. Portal access is provided following registration.

Challenges and Strategies for Implementing Environmental Sequence Stratigraphy Part One (2.5 Hours)
by Tim Kemmis, PhD

1. Advantages of the ESS Approach
2. Fundamentals of Sampling, Description, and Synthesis
Course Module One sets the stage for understanding both the challenges and strategies for implementing Environmental Sequence Stratigraphy (ESS). The USEPA (2017) has designated ESS as a preferred approach to site investigations and the development of Conceptual Site Models (CSMs). There's good reason for this. And that reason is the complexity and uniqueness geology has to offer. Nature has a seemingly infinite number of variables. The result? We encounter geologic sequences with complex geometries and relationships both laterally and vertically. Environmental Sequence Stratigraphy is a successful approach toward understanding those complexities.

This course module introduces the three phases of Environmental Sequence Stratigraphy investigations identified in the USEPA's Best Practices for Environmental Site Management: A Practical Guide for Applying Environmental Sequence Stratigraphy to Improve Conceptional Models:

Phase 1 - Understand the Site Setting using available information to determine the geologic setting, applicable depositional environment(s), and the characteristics/relationships of the expected geologic sequences.

Phase 2 - Format the lithologic data and determine how trends relate to the depositional environment(s) and the geologic sequence history. If existing data are inadequate, complete any additional subsurface investigation needed to clarify facies, depositional environments, and the site sequence stratigraphy.

Phase 3 - Identify and map the subsurface geologic sequence stratigraphy with respect to depositional environment and predict contaminant pathways. Test and refine predictions (from well data, ground water chemistry, etc.).

This Course Module continues with discussion of the challenges that have historically inhibited reliable subsurface investigations and describes the essential information required to implement Environmental Sequence Stratigraphy. This module includes:
  • The importance of the ESS approach in providing the information to understand geologic relationships (geometries) in the subsurface, enabling construction of accurate Conceptual Site Models (CSMs).

  • The merits and misuse of other common investigative approaches and how they compare to ESS.

  • Basic essentials needed to implement ESS:
    • T.C. Chamberlin's Method of Multiple Working Hypotheses.
    • Recognition of the contaminant characteristics of the contaminants of concern.
    • Knowing and understanding depositional environments and facies.
    • Completing appropriate sampling.
    • Classifying and describing the sediment sequence to reveal depositional environments, facies, and sediment characteristics and relationships.

Challenges and Strategies for Implementing Environmental Sequence Stratigraphy Part Two (3.0 Hours)
by Tim Kemmis, PhD

1. Three Phases of Environmental Sequence Stratigraphy
2. Example Depositional Environments: Marine, Glacial, Alluvial
Course Module Two begins with a discussion of the three steps - or phases - in Environmental Sequence Stratigraphic investigations.

The ESS approach differs somewhat between different depositional environments, so we will briefly discuss three different depositional environments and the types of complexity and variability found in them:
  • Coastal plain marine environments
  • Alluvial environments
  • Glacial environments.

For each of these depositional environments, we will discuss various questions that our investigations need to answer as we complete each phase of the ESS investigation. Some starting points are listed below:

Phase 1 - Understand the site setting: location in the regional geologic setting, geomorphic position of the site, expected depositional environments/processes/deposits, potential lateral facies changes and relationships, regional geologic history and its significance to changing depositional environments/processes/deposits through time.

Phase 2 - Put the site information into a geologic context by formatting the lithologic data so that depositional environments, facies, and lateral and vertical relationships (geometries) can be identified in order to predict ground water flow through the sediment system.

Phase 3 - Test that the geologic framework established by Environmental Sequence Stratigraphic Analysis accurately predicts ground water and contaminant flow.

This phased approach enables establishment of the site sequence stratigraphy and initial predictions of ground water movement, contaminant migration, and receptor vulnerability. The next course module will conclude with methodology to incorporate low-permeability aquitards integrity and their impact within the site-scale system.

Challenges and Strategies for Implementing Environmental Sequence Stratigraphy Part Three (2.5 Hours)
by Tim Kemmis, PhD and David Hart, PhD

1. Applying Aquitards to Environmental Sequence Stratigraphy
2. How Secondary Weathering Effects Aquitards
3. Course Wrap Up
Environmental Sequence Stratigraphy investigations tend to be focused on aquifers, yet aquitards occur in almost every sedimentary sequence. Even so, little study has been made of just how effective aquitards actually are at particular sites.

Course Module 3 discusses the role and hydrogeologic effectiveness of aquitards in sedimentary sequences. For example, weathering and the hydrogeologic changes it can cause to sediments, particularly in the development of joints (fractures) in fine-grained sediments can dramatically impact bulk hydraulic conductivities, both near surface and where weathering zones are buried by younger sediments.

This course module presents basic strategies for testing aquitard integrity. It also includes a list of common practices that are generally not a reliable indicator of actual aquitard effectiveness, aspects not typically included in boring log descriptions or indicated in geophysical investigations. The module will include how aquitard integrity relates to basic hydrogeologic principles of hydraulic gradients and flow mechanisms.

In order to help participants understand the nature of how aquitards can become jointed and fractured, this module will discuss the basics of post-depositional weathering processes. Weathering is generally not covered in geologic and engineering courses, but weathering changes sediment properties, in particular, the development of jointing (fractures) in fine-grained sediment.

This module also features a case study of an alluvial sequence to demonstrate the importance of Phase 1 investigations of the regional geologic background in order to understand the unexpected alluvial sequence that was encountered.
  • Post depositional weathering and hydrogeologic changes within Sedimentary Sequences.

  • Holistic Hydrogeology: considering the entire ground water flow system.
    • Hydraulic Gradients and Implications for Monitoring
    • Low-permeability aquitards:
      • Differentiating stacked aquitards.
      • Measuring aquitard integrity.

  • Application of the ESS approach to sediments deposited in an alluvial environment.

  • Conclusions
    • Main Take-Away Points and Offline Tutorial Guidance.
    • Re-Visiting the Fundamental Questions and Answers for Implementing ESS.
    • Where do we go from here?

Following Course Module 3, participants are eligible for taking the Final Exam and receiving a course completion certificate from Northern Illinois University.


Study Notes and Tutorials (1.0 Hour)
Completion of tutorials are part of this course. The tutorials will be distributed approximately 1 week before the first course module using a Online Course Portal. Time estimated to complete the material is 1+ hour, however 0.5 instructional contact hours are assigned by NIU to this exercise along with a Final Exam.

Final Exam:
The final exam is an online series of course element challenges that include both basic aspects of Environmental Sequence Stratigraphy and hydrogeologic principles.
  • 25 Multiple Choice Questions
Private and individualized commencement to receive a Continuing Education Certificate from Northern Illinois University Outreach for 8.0 Professional Development Hours (0.8 CEU).

You MUST be a Member to order this Online/Offline Course!
Please 'Login' or 'Create your Free Member Account' Now.

 See what others are saying...

"I really enjoyed it...gave me project ideas to develop our in-house trove of geologic knowledge..."

- Stuart Knoop, Langan, New York City

"(The online ESS course) definitely gave me a much better framework from which to evaluate site stratigraphy. Likewise, I found the information on marine, glacial, and fluvial environments very useful. The format was easy to use as well."

- Steve E. Panter, PG

"The (online) Environmental Sequence Stratigraphy course by Midwest GeoSciences Group was designed as a thoughtful learning experience and the instructors themselves were clearly experts. With other organizations webinars I sometimes find that not all experts are great explainers, but that certainly wasn't the case here.

The material was challenging, thought-provoking, and was disseminated in a way that was easily digestible. I'll be thinking about my projects in a different and more holistic way thanks to this course.

You're a real pleasure to work with, so I'm looking forward to the next course from Midwest GeoSciences Group."

- Tim Johncox, P.G., Env. Compliance & Remediation, Stewarts, Inc.

"The (online Environmental Sequence Stratigraphy) course provided good information and the pre-reading, tutorials, and final exam provided worthwhile rigor and value. This course (demands some) effort to complete.......but it was full of information and the effort was certainly worthwhile. You don't get something for nothing, do you?"

- Donald P. Campbell, Brooklyn, New York.

"I just finished the final exam. I feel that I've learned something new. I really like the part about aquitards. Thank you for everything."

- Jose Yanez, Hydrogeologist, Flow Hydro Consulting Group, Santiago, Chile

"Environmental sequence stratigraphy was mostly a mystery to me prior to taking this course. While I understood the basic concepts, I did not relate stratigraphic correlations to contaminant fate and transport applications. Now as I look back, I realize I have been trying to correlate hydrostratigraphy without having all the proper approach or tools. It is like trying to do this work with one hand (or both) tied behind my back. Learning ESS strategies was eye opening for me. Plus, I learned a lot about glacial (depositional environments and) stratigraphy. Fluvial systems changes are complex, but it is enlightening to realize the expected facies changes are dependent on so many variables. Plus, (the course was a good review) about the impacts of ancient rise and fall of sea level in marine (depositional) settings. This makes me want to go back and revisit the hydrogeology of some of our more complex sites to see what we missed."

- Paul Trone, Principal Senior Geologist, EVREN Northwest, Inc.

"I just finished the final course module of the (Challenges and Strategies for Implementing Environmental Sequence Stratigraphy) class. Thanks for providing such a detailed and well organized class actually geared for geo-professionals. It really drilled into the core topics and was a perfect class for my NYS PG continuing education credits."

- Andy Judd, PG, Hydrogeologist/Project Manager

"The online course, Implementing Environmental Sequence Stratigraphy, has given me a new perspective on conceptualizing the geology at the sites I work at for environmental investigations.

I've been mostly focused on correlations using lithology... but looking at correlations from a stratigraphic perspective seems much more powerful.

I have an upcoming project with a deep boring and I plan to work with our field geologist to add descriptions that will aid in developing a stratigraphic interpretation.

We do our homework looking at USGS and other reports regarding the regional geology but not really brought it to the borehole description level. The goal will be to add a stratigraphic column on the boring log like what was presented on the slide during Course Module 2.

Special thanks to Tim for getting us through Module 2. It was a long session, but it's good to keep us engaged in one session contrasting the three depositional settings (marine, glacial, and alluvial)."

- Joe Lysonski, Sr. Environmental Consultant,
   Anderson-Mulholland & Associates, Inc., Bedford Hills, NY

"This course clarifies the meaning of Environmental Sequence Stratigraphy for me. Each step is spot on and I appreciate the video tutorial about how soil core management can make stratigraphic identification easier or more difficult.

The 3 Phases of ESS are more obvious to me now and I liked the examples of how each phase was applied to three different depositional settings, Marine Sequences, Glacial Sequences, and Fluvial Sequences. I look forward to the rest of the course."

- Jerry Greer, PE, PG, Senior Consultant.

Members Login
Become A Member

It's Free, It's Easy and as a
Member you'll enjoy...
  • Exclusive Videos
  • Special Pricing
  • And Much More

Learn More