Course Description

Dry cleaners now rank among our most prevalent high-risk sites.  How did this happen, and what can we do about it?  Answers to these questions may appear obvious, but when we drill down we soon find that the science behind the problem is complex and the range of possible engineering solutions is daunting.  In this two-part series you will learn about the history of dry cleaner operations, chemical use, common and not-so-common sources of contamination to the subsurface, relevant fate and transport processes, and the latest in effective remediation and risk management strategies. This two-part webinar on dry cleaners will cover the following areas:

-The five generations of dry cleaning machines

-Historic and current solvent types and usage

-Common modes of chemical release to the subsurface

-Effective site characterization strategies and best practice

-Source zone depletion and elimination

-Remedial approaches such as ISCO, ISCR, SVE/AS, ZVI and others

MSc, PEng (BC, SK, YK)

Guy Patrick

Guy Patrick is a contaminant hydrogeologist and environmental engineer with over 30 years of experience in the assessment and remediation of contaminated sites in soil, sediment and bedrock environments. As Managing Director of Patrick Consulting Inc., a founding member of GeoEnviroPro, and a Contaminated Sites Approved Professional in the Province of British Columbia, Mr. Patrick’s expertise includes strong technical review and project oversight, with a focus on the development of innovative approaches in the assessment and clean-up of contaminated sites. As a senior technical specialist, he provides leadership in the investigation and remediation of sites contaminated by inorganic and organic chemical solids and liquids, including dense non-aqueous phase liquids (DNAPL) such as coal tars, chlorinated solvents and mercury. His work experience includes technical review and litigation support on a number of projects in Canada and the US. In addition to consulting, Guy is an Adjunct Professor at UBC, where he has co-taught course in environmental engineering and contaminant hydrogeology.

Course curriculum

  • 1

    Dry Cleaners in the Neighbourhood - Investigation & Remediation

    • Discussion

  • 2

    Session 1

    • GEPro Dry Cleaners Part 1 History

    • GEPro Dry Cleaners Part 2 Chemical Properties

    • Dry Cleaners Session 1 - Recording

  • 3

    Session 2

    • GEPro Dry Cleaners Part 3 Site Characterization

    • GPatrick Dry Cleaners Part 4 Remediation

    • Dry Cleaners Session 2 - Recording