Language: English

First broadcast in November 2025, this in-depth webinar with guest speakers showcases the successful remediation of a large, complex site contaminated with a variety of chlorinated solvents, using a combined in situ approach.

Christan Nielsen of Tauw and Alberto Cicognani of A2A Ambiente discuss the design, implementation and validation of the complex remediation work across the 20,000m² site at a waste treatment and management facility owned by A2A Ambiente.

Learn how collaboration, innovation, and adaptive fieldwork led to a successful outcome in a demanding remediation project!

What You’ll Learn:

• Site Conceptual Model: Understanding the complex contamination profile and risk assessment.
• Remedial Design: How from a successful pilot test Tauw informed a full-scale strategy using three in situ technologies from REGENESIS:
  
  • Enhanced Reductive Dechlorination (ERD)
  • In Situ Chemical Reduction (ISCR)
  • In Situ Sorption and Bioremediation (ISSB) with PlumeStop colloidal activated carbon
• Details on operational execution and site specific challenges overcome, including:
  
  • Challenging geology
  • Integration with pump & treat system
  • Limited time frame
• Results:
  
  • Two orders of magnitude reduction in contaminant concentrations
  • Compliance with stringent regulatory limits
  • Full-scale validation and monitoring success

This webinar recording is ideal for environmental consultants, engineers, regulators and stakeholders involved in contaminated land management and remediation. Register to watch the recording

About the Speakers

Christian Nielsen
Senior Project Manager, Tauw Italia
Christian Nielsen brings over 20 years of expertise in environmental consulting, risk assessment, and remediation. Based in Milan, he has held various roles at Tauw Italia, including environmental consultant and project manager. In his current role, he leads complex remediation projects for industrial clients, real estate developers, and investment funds.
Tauw is a European consultancy and engineering firm specializing in environmental advice and sustainable development. With more than 1,200 professionals across offices in the Netherlands, Belgium, Germany, France, Spain, and Italy, Tauw is committed to creating a clean, safe, and sustainable living environment.

Alberto Cicognani
Remediation Technical Manager, A2A Ambiente
With more than 25 years of experience in environmental remediation, Alberto Cicognani has worked with leading consulting firms and major industrial companies in the oil & gas and multi-utility sectors. At A2A Ambiente, he manages the technical, administrative and financial aspects of remediation projects, leveraging his deep knowledge of environmental legislation and risk management.
A2A Ambiente is part of the A2A Group, one of Italy’s largest multi-utility companies, active in energy production and distribution, waste management, environmental services, and the development of innovative solutions for energy efficiency, the circular economy, electric mobility, and smart cities.

Paola Goria
District Manager, REGENESIS

Paola Goria is the District Manager for REGENESIS in the Mediterranean District. Paola has over 20 years of experience in the remediation industry and gained an MSc in Environmental Engineering from Politecnico of Turin, Italy. In her current role at REGENESIS she supports clients and project teams with site data analysis, design of in situ treatment plans and post-application data analysis.