August 12, 2020

Christopher Robb to Present on Environmental Remediation at NEWMOA Event

Christopher Robb, P.E. (Wisconsin) will present "Soil Mixing for Environmental Remediation: An Effective Tool for Challenging Sites" in the Northeast Waste Management Officials' Association (NEWMOA) webinar from 1:30 - 3:30 p.m. EDT on August 13, 2020.

Chris' co-presenters are Darin Payne, President – Geo-Solutions, Inc. and Daniel Ruffing, P.E. Vice President of Engineering – Geo-Solutions, Inc.

Chris Robb is a Senior Principal Engineer based in Wisconsin with more than 20 years of experience in environmental consulting, remediation design and construction, quality control, and project management of solid and hazardous waste remediation projects throughout the United States.

The webinar will provide an overview of the soil mixing technique, design and long-term monitoring considerations, and case studies to reinforce the applicability of soil mixing for remediation.

NEWMOA is a non-profit, non-partisan, interstate association whose membership is composed of the state environment agency programs that address pollution prevention, toxics use reduction, sustainability, materials management, hazardous waste, solid waste, emergency response, waste site cleanup, underground storage tanks, and related environmental challenges in Connecticut, Maine, Massachusetts, New Hampshire, New Jersey, New York, Rhode Island, and Vermont.

Presentation Description

Environmental remediation of recalcitrant compounds, such as chlorinated solvents, can be very challenging, especially in tight lithologies or other geologic situations. Soil mixing is a method of delivering reagents, air, or steam to the subsurface to enhance contact with the contaminated soil/groundwater and can limit contaminant rebound. Soil mixing can be a cost effective method for in-situ remediation via treatment (i.e., oxidation, reduction) or stabilization/solidification of numerous waste types, including coal tar at former manufactured gas plant (MGP) or wood treating sites, and also for treating chlorinated solvents, for stabilizing metals, and for stripping volatile contaminants. The webinar will provide an overview of the soil mixing technique, design and long-term monitoring considerations, and case studies to reinforce the applicability of soil mixing for remediation.