FREE Live Webinars Empowering environmental professionals through high-quality, expert-led, engaging education!

40Â thousand Environmental Professionals have registered for EnviroClass Live Webinars!
Every month we offer new, live webinars that focus on training for Remediation, PFAS, Vapor Intrusion, Coal Ash, Energy & Environment, Air Quality, Wastewater, and more.
Each webinar offers two or three speakers who are environmental leaders on their topic for the industry, and during the training you can message the speaker questions about your project.
Register & we'll send you a link to connect when we go live!Â
We will be using GoToWebinar. You can join our session by using a Mac, PC or a mobile device. These are FREE but registration is required.
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Upcoming Webinars

HRSC & Conceptual Site Models: See More, Spend Less, Clean Smarter!
Thursday, August 28th, 12-2pm EST
Presenters:Â John Sohl &Â James Henderson
When it comes to site cleanup projects, skipping High Resolution Site Characterization (HRSC) can cost you—big. This webinar will show you why HRSC and strong Conceptual Site Models (CSMs) should be the first steps in every project, saving significant time, money, and headaches down the line.
Your expert instructors bring decades of hands-on experience and global project leadership:
👨‍🔬 James Henderson, Ph.D. | Project Director, Corteva Corporate Remediation Group
👨‍🔬 John Sohl | President & CEO, Columbia Technologies
Class Overview
This session focuses on developing a robust Conceptual Site Model (CSM) to address challenges at complex sites, incorporating sustainability principles and practical tools to improve outcomes.
Key Topics Covered:
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Aspirations: Protect human health, conserve the environment, promote sustainability, and maintain financial schedules.
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Importance of CSM: Understand why a strong CSM is essential and how Advanced Site Characterization Tools (ASCT) maximize accuracy and efficiency.
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Finance & Deadline Analyses: Learn to assess financial and time commitments early to avoid costly overruns.
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Complexity of Multi-Country Teams: Tackle challenges like language barriers, differing regulations, and varied site conditions.
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Education & Collaboration: Explore how partnerships with local universities, service providers, and regulatory authorities—plus investment in students—advance knowledge and project success.
Real-world case studies, including a South American remediation project, will demonstrate how HRSC can dramatically improve project outcomes while reducing costs and timelines.
🎓 Who Should Attend: Environmental consultants, engineers, geologists, and project managers involved in remediation planning and execution.
👇 Click this Link to REGISTER now to secure your spot for this FREE live training!
Meet Your Instructors

John Sohl
President & CEO, Columbia Technologies
Contact: (301) 455–7644
John Sohl is the President and CEO of Columbia Technologies, a global remediation firm dedicated to making the world a cleaner, healthier place by transforming highly contaminated sites into safe places to live and work. Under his leadership, the company has executed more than 3,000 analytics-driven remediation projects worldwide, with active operations in the United States, Argentina, Brazil, and Colombia, and recently completed projects in South Africa and France. Clients span the manufacturing, energy, chemicals, government, and utilities sectors.
With over 25 years of experience, John is a recognized pioneer in high-resolution and direct sensing technologies. He has managed thousands of projects globally and holds three U.S. and two international patents involving direct sensors and real-time information systems. He is a graduate of the U.S. Naval Academy with a B.S. in Engineering and earned an M.B.A. from Chaminade University of Honolulu.
John also serves as a Director of Columbia Technologies do Brasil Ltda and is an active member of ASTM International and the Sustainable Remediation Forum, where he contributes to advancing global standards and best practices.
John is one of our most popular teachers at EnviroClass & EnviroWorkshops, where he shares both technical expertise and practical insights from decades of remediation fieldwork. Attendees value his ability to connect cutting-edge science with real-world application.

Dr. James Henderson Ph.D.Â
Project Director, Corteva
Contact: +1(800) 258-3033Â
Dr. James Henderson is Project Director for the Corteva Corporate Remediation Group, where he oversees investigation and remediation projects throughout Latin America. Based in Charlotte, NC, he leads diverse international teams to tackle complex sites while aligning projects with financial schedules, sustainability goals, and human health protections.
James holds a B.A. in Spanish from Dickinson College, a Master’s in Environmental Sciences from California State University, and a Ph.D. in Environmental Engineering & Science from Clemson University, where he was awarded an EPA STAR Fellowship. His research on multi-phase contaminant transport has been published in leading journals, including Environmental Science & Technology, Journal of Contaminant Hydrology, and Applied and Environmental Microbiology.
Earlier in his career, James worked with the ADEPT Group in Los Angeles, the South Carolina Department of Health and Environmental Control, and URS Corporation in Charlotte, NC, gaining broad expertise in emissions reduction, site assessments, and remediation system audits.
Today, James combines technical expertise, regulatory experience, and international project leadership with a passion for education. He has been instrumental in helping students from Brazil enroll in Clemson’s Environmental Engineering & Science graduate programs, extending his impact to the next generation of environmental leaders.
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