• All
  • Bedrock
  • Combined Remedies
  • Complex Thermal Remediation
  • Electrical Resistance Heating
  • High Temp Thermal
  • Intro to Thermal Remediation
  • Low Temp Thermal
  • PFAS
  • Steam Enhanced Extraction
  • Thermal Conduction Heating

In Situ Thermal Remediation of High Boiling Point Chemicals

The treatment of sites with recalcitrant contaminants such as PFAS, PCBs, dioxins and PAHs can feel daunting. Fortunately, there’s an effective solution for high-boiling point chemicals – In Situ Thermal Remediation (ISTR).

In this flash webinar, TerraTherm thermal experts Sam Nienstedt, Technologist, and Steffen Griepke, Vice President of Technology, will provide a brief overview of thermal remediation and share how ISTR can remove or destroy subsurface contaminants.  They explain why thermal conductive heating (TCH) is the primary ISTR technology for remediation of high boiling point chemicals. They will also discuss important design do’s and don’ts for a successful remedy, common ISTR myths, and typical costs.

There will be time for questions at the end, so bring your questions about using thermal remediation to treat hard-to-treat contaminants. This flash webinar is scheduled for 30 minutes.

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ISTR and Subsidence Risks

More and more frequently, In Situ Thermal Remediation (ISTR) is being used to treat contaminations located below buildings, roadways, and other critical infrastructure. Subsidence and potential geotechnical effects on buildings and infrastructure are concerns often raised in the initial design phase of a thermal remedy.

While the heating approach and main heating mechanisms differ based on the ISTR technology utilized, heating in general will thermally expand the soils treated and at the same time, change the saturation of the treated volume due to boil-off of some of the water. Depending on the geology, this can lead to changes in the geotechnical integrity.

In this flash webinar, the basics factors affecting the geotechnical properties during a thermal remedy will be discussed, along with a general description of soil types where subsidence is more likely to happen. Examples of geotechnical pre-investigations and tests utilized to determine the impact of a structure’s stability will be given along with case studies showing data from thermal areas remediated below structures.


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ISTR in Fractured Bedrock

Treating fractured bedrock is complex, and effective remedial options are limited. Due to the fractured nature of rock, contamination can migrate deep, and pathways out of the bedrock system are limited.

Using thermal technologies is one of the most effective and reliable methods of treating fractured bedrock.

In this flash webinar, presenters Steffen Griepke and John LaChance, (VPs of Technology and Development, respectively) will discuss the treatment of bedrock source zones, including:

  • The challenges of removing CVOCs and DNAPL from fractured rock
  • The pros and cons of the most common thermal treatment technologies in bedrock settings
  • Design considerations and field implementation challenges

The presentation will include examples and results from bedrock sites successfully remediated using thermal. Steffen and John will also share highlights from a recently completed project—the world’s deepest thermal remediation project in crystalline rock, treated to a total depth of 170 ft.

If you are involved in the evaluation or remediation of any bedrock sites, this is a webinar you want to watch.

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Low Temperature Thermal – The Sustainable Thermal Remediation Approach

“Thermal” and “sustainable” in the same sentence?!

Yes! Although most often associated with a high demand for resources and infrastructure, thermal remediation can be accomplished sustainably.

In this flash webinar, John LaChance and Erin Hauber will explain how low-temperature thermal technology can address your challenges in an environmentally and economically friendly manner. They will describe how the technology works, and the remediation mechanisms targeted by low-temperature thermal. They’ll also cover which contaminants of concern (COCs) are most suited for this approach, costs, and timeframe.

John and Erin will answer questions during a Q&A at the end of the presentation, so be sure to submit yours during registration.

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ISTR Challenges Part 1: Thermal Conductive Heating

In Situ Thermal Remediation (ISTR) is a widely used approach for treating highly contaminated source zones (e.g., DNAPL and LNAPL) at hazardous waste sites because of its reliability and effectiveness at removing a wide range of chemicals from a variety of geologic settings.  As experienced consultants know, large scale remediation projects come with unique challenges.

Vice President of Development, John LaChance, and Senior Technologist, Erin Hauber, are here to share some of the lessons learned from implementing thermal conductive heating (TCH) at more than 80 sites including:

  • unexpected COCs and increased mass
  • higher groundwater flux than expected
  • materials selection for sites with highly corrosive COCs
  • how to handle highly flammable COCs in the vapor treatment system
  • mitigating vapor intrusion issues that may arise during treatment

Join the discussion for insight to help avoid costly project delays in your next thermal project.  There will be time for questions at the end, so bring the thermal remediation questions you’ve never had a chance to ask.

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ISTR Challenges Part 2: Electrical Resistance Heating and Steam Enhanced Extraction

Thermal Conduction Heating (TCH), Electrical Resistance Heating (ERH) and Steam Enhanced Extraction (SEE) are widely used thermal technologies capable of effectively remediating a variety of chemicals in various varying subsurface settings, yet sometimes operations do not perform as planned.  An experienced thermal remediation contractor can help you anticipate and address site-specific challenges during full-scale thermal projects.

Presented by Vice President of Development, John LaChance and Vice President of Technology, Steffen Griepke, ISTR Challenges Part 2 covers some of the common issues that can arise at ERH and SEE sites, and discuss how they should be addressed.  You’ll hear about scenarios involving

  • significantly different soil electrical resistivities than planned
  • slower than expected heat-up
  • stray voltages and currents
  • poor steam quality
  • higher than expected mass removal rates
  • lack of hydraulic control
  • non-uniform steam delivery and heating

Join the discussion for insight to help avoid costly project delays in your next thermal project.

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The Importance of Good Data in The Design and Assessment of ISTR

Selection of the right In Situ Thermal Remediation (ISTR) technology for a site and design of an effective system starts with a good Conceptual Site Model (CSM).  Presented by Vice President of Development, John LaChance and Vice President of Technology, Steffen Griepke, this informative webinar will cover the specific data needs for evaluation, technology selection, and design of appropriate ISTR systems for sites and will offer some insights as to the how data gaps can adversely affect performance and costs.

Once a system is designed and constructed, then the fun really begins!  Thermal sites move fast relative to other remedies, and having a good understanding of what data are key to track and what questions to ask are paramount to ensuring success.  All of this will be covered in detail in the webinar.  There will also be time at the end to address your questions. So, bring your popcorn, curiosity, and questions!

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Why Do Thermal Remediation Projects Cost So Much?

Ever wonder why using thermal remediation technology costs so much? Are owners of thermal remediation companies driving around in fancy cars and vacationing on the Riviera (or fill in the blank for some other nice spot)?

As hard as it may be to believe, the answer is no. In this two-part flash webinar series, our experts will delve into the details that determine in situ thermal remediation (ISTR) project costs, and how those costs can be managed.

In part one, TerraTherm experts Erin Hauber and John LaChance will explain all the moving parts that go into the delivery and implementation of a successful ISTR project. They’ll pull the curtain back and break down the components of a thermal project (drilling, surface cover, vapor and liquid extraction, manifold piping, treatment system, power supply, and design, operations, engineering support, etc.) and how site conditions (COCs, depth of treatment, geology, groundwater flux, and site access limitations) affect design approaches and costs.

You’ll also have a chance to ask your most burning questions about thermal remediation costs, so be sure to register and attend!

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How to Manage and Optimize the Cost of Your ISTR Project

Why do thermal remediation projects cost so much? And is there anything that can be done to manage those costs?

In part one of this webinar series, TerraTherm experts Erin Hauber and John LaChance explained how in situ thermal remediation (ISTR) costs are determined.

In this second, 30-minute installment, they shared ways to manage the cost of ISTR and discussed how decisions made during the site characterization, technology selection, procurement, and design phases of a project impact costs. They also covered…

  • Establishing the treatment area and interval
  • Soil and water cleanup goals (e.g., what happens when the cleanup goal within the treatment area is much less than concentrations remaining on the outside)
  • Starting mass estimates
  • Subsurface vs. above grade wellfield completions
  • Conservative temperature performance goals (e.g., every sensor must achieve 100°C).

Erin and John provided guidance on how to compare competing proposals to identify the best technical approach and overall value, giving you and your client the highest probability of success for the minimum cost.

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What is Thermal Remediation?

Are you in need of a solution for a site with contaminants that are hard to treat, an aggressive schedule, and/or stringent cleanup goals? If so, then thermal remediation may be a strong candidate for your site.

In this 30-minute flash webinar, Senior Technologist Erin Hauber and Senior Chemist Alyson Fortune will cover the basics of thermal remediation. They will introduce the three primary thermal technologies, Electrical Resistance Heating (ERH), Thermal Conduction Heating (TCH), and Steam Enhanced Extraction (SEE). They will explain how they work, the key removal mechanisms, and what constituents & lithologies they are best suited to treat.

If you’re interested in gaining a basic understanding of thermal remediation and how it can be used to remediate source zones, this webinar series is one you won’t want to miss. Watch the webinar-on-demand today!


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