Innovative Environmental Construction Technologies Webinar Series

01/14/2026 - 10:00 AM Pacific / 1:00 PM Eastern

This three-part series explores how in situ stabilization (ISS), soil mixing, and trenchless permeable reactive barriers (PRBs) are transforming remediation design and performance for redevelopment, containment, and deep groundwater challenges.

Led by Cascade’s technical experts, each session highlights the real-world considerations that drive technology selection, including treatment depth, contaminant profile, and redevelopment goals. Learn how an integrated in situ solution reduces risk, simplifies implementation, and delivers lasting results across complex site conditions.

Part 1: In Situ Stabilization for Contaminated Soil at Sites Undergoing Redevelopment

January 14, 2026 | 10 AM PST/ 1 PM EST

Presenters: Paul Lear, Ph.D and Ed Zielanski

Learn how ISS can simplify remediation for redevelopment projects by reducing excavation and disposal costs and accelerating schedules. Learn practical strategies to integrate the stabilized soil mass into site plans, including foundations, utilities, and grading. See real-world examples of ISS supporting commercial and residential redevelopment, and gain actionable insights to control costs, stay on schedule, and achieve predictable outcomes.

Part 2: Using In Situ Soil Mixing for PRBs or Barrier Walls

February 11, 2026 | 10 AM PST/ 1 PM EST

Presenter: Paul Lear, Ph.D and Deborah Schaffer (Schnell) P.E.

This session shows how in situ soil mixing helps meet cleanup goals by reducing excavation, minimizing spoils, and simplifying permitting. Experts will share insights on using soil mixing for barriers in challenging conditions, where it works best, and where it may not, supported by real-world examples and strategies for managing risk and timelines.

Part 3: Deep Groundwater Remediation with Trenchless PRBs

March 11, 2026 | 10 AM PST/ 1 PM EST

Panel: Deborah Schaffer (Schnell) P.E. and Ed Zielanski

Facing deep contamination or complex geology? This webinar explores how GeoSierra Trenchless Permeable Reactive Barriers (PRBs) deliver effective groundwater remediation with minimal site disruption. Learn how trenchless installation reaches depths of 150 feet or more, reduces long-term costs, and supports sustainable cleanup goals. Our experts will share proven strategies, design considerations, and real-world examples so you can tackle tough sites efficiently and achieve durable 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.

Paul Lear, Ph.D

Senior Technical Director, Civil & Environmental Construction

Dr. Paul Lear, a leading authority in stabilization/solidification (S/S) technology, brings over 30 years of experience in full-scale remediation projects to Cascade. As a key technical expert in In Situ Stabilization (ISS), Dr. Lear has pioneered numerous groundbreaking advancements in the field. Dr. Lear's expertise extends internationally, with notable achievements such as the first S/S of organic wastes in Australia and the first large-scale S/S treatment in Canada.

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.