Part 3: Deep Groundwater Remediation with Trenchless PRBs

Innovative Environmental Construction Technologies Webinar Series

Struggling with deep, hard-to-reach contamination or complex site geology? Join us for the third webinar in our series to explore how GeoSierra trenchless permeable reactive barriers (PRBs) can provide effective solutions for deep groundwater remediation.

Our experts will show how this trenchless technology addresses tough remediation challenges while delivering tangible benefits:

  • Long-Term Cost Savings: Passive treatment reduces ongoing operational expenses, making remediation more economical over time.
  • Minimal Site Disturbance: Trenchless installation avoids large-scale excavation and minimizes spoil generation, keeping site operations running smoothly.
  • Deep Reach: Install PRBs at depths of 150 feet or more, exceeding conventional methods and targeting complex contamination plumes.
  • Sustainable Remediation: Passive barriers preserve natural groundwater flow, require no continuous energy input, and support green remediation goals.
  • Proven Longevity: Over 30 years of real-world performance demonstrates the method’s reliability and durability.

You’ll also gain practical insights on:

  • Where PRBs are most effective for groundwater protection and containment.
  • High-level design considerations and site-specific implementation strategies.
  • Opportunities for future injections or treatment to maximize long-term performance.

Walk away understanding how trenchless PRBs can help you tackle deep contamination efficiently, reduce costs, minimize site disruption, and deliver long-lasting, sustainable results.

About the Presenters

Edward Zielanski, P.E.

Vice President of Operations, Civil & Environmental Construction

Ed Zielanski, PE, is the Vice President of Operations at Cascade for the Civil & Environmental Construction division based in Westampton, NJ.  He has proven technical, project management, and leadership experience from his 25+ year career in environmental consulting, capital project delivery, and remediation contracting.

Deborah Shaffer (Schnell), P.E.

Director of Project Management, Civil & Environmental Construction

Deborah Shaffer (Schnell) is the Director of Project Management at Cascade. She is a leading national expert on permeable reactive barriers (PRBs), hydraulic and pneumatic fracturing, and in situ technologies such as in situ chemical oxidation (ISCO) and in situ chemical reduction (ISCR), with a focus on amendment distribution. Deborah works with clients to select the best remedial technology for their sites, based on data presented in their conceptual site model (CSM), project timelines, and budget.

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