Testimonials
What Clients Are Saying
Proven Expertise, Real Results
“Andrew’s analysis of soil and groundwater contamination was central to our liability allocation case. He reviewed all data, created clear visuals for counsel and clients, and helped develop a remediation plan accepted by Ohio EPA. His work supported key cost-allocation arguments and contributed to a favorable settlement. I continue to recommend him in my post-retirement advisory role.”
Wray Blattner
Thompson Hine, LLP
“I first had the pleasure of meeting Andrew when he presented remedial investigation findings to the Remediation Science Advisory Board for a large chemical plant. He impressed me with his ability to identify important details of contamination at the site, as well as build coherent conceptual models of groundwater and sediment contamination based on sound analysis and integration of multiple datasets. He was able to describe contaminant behavior at multiple scales, while at the same time focusing on the key issues and conveying the big picture.
As Andrew continued to educate the SAB at subsequent meetings, I was always impressed by his outstanding analytical and communication skills. He is sincere and very enjoyable to work with, and it is with overwhelming support that I recommend Andrew for developing sustainable approaches and solutions in the site remediation process.”
Lisa Axe, Ph.D.
Client Science Advisory Board & Professor, New Jersey Institute of Technology Department of Chemical Engineering
“We needed someone to communicate highly complex concepts and data to non-scientists. We were extremely impressed with his work ethic and results. I highly recommend Andrew. He is one of those reliable consultants you use repeatedly throughout your career.”
Ed Urquhart, CEO
Vernay Laboratories
“In my years of working with Andrew, he has proven to be a valuable and reliable team member. He developed unique approaches for data analysis which have supported conclusions used in making strategic decisions. His work is always thorough and clearly presented, and his participation enabled us to proceed with confidence on a wide range of technical projects”
Ed Lutz, PE
Fortune 100 Company Remediation Project Director
“I first met Andrew at the Battelle Chlorinated Solvent Conference in 2014. Over the years, his academic and consulting achievements stand out. He has a rare blend of intellectual depth, professional excellence, and practical knowledge.
His expertise spans many aspects of groundwater hydrogeology, numerical modeling, site characterization, contamination, and remediation.
His 1995 report for Lawrence Berkeley National Laboratory provided needed guidance on hydrogeologic characterization of fractured rock, and it remains a valuable reference.
He founded GroundwaterU.org and also co-authored a GW-Project book with John Cherry, an insightful primer on groundwater flow—a resource that I recommend to my students at Princeton. He also co-authored an Issue Paper in Groundwater Journal (2023) that critically examines the EPA’s Interim Drinking Water Health Advisories for PFAS.
After my decades of involvement in groundwater science and engineering both in the U.S. and internationally, I can confidently say that Andrew is among the top 1% of Teacher-Scholars and Practitioners in the profession.
Bob Cleary, Ph.D.
Princeton Groundwater, Inc.
“Dr. Cohen was an excellent collaborator who assisted in our mission to assess and make decisions regarding sustainable water management in remote regions of Morocco. His analysis integrated all sorts of data – physical, geological, satellite, historical, sociological – and his recommendations weighed probabilities, economic factors, and prospective returns. He is immediately responsive, and his follow-up is entirely reliable.”
Yossef Ben-Meir, Ph.D.
President, High Atlas Foundation, Morocco
“Andrew is an expert in hydrogeology and transport modeling applied to conceptual site model, site characterization, and remediation. He is thoroughly familiar with various technical approaches and tools for quantitative hydrogeologic analysis.”
Daekyoo Hwang, Ph.D., PE
Principal Geoenvironmental Engineer at Sedsol Engineering
“Andrew Cohen has mastered the art of communication using visual tools and graphics to help others understand complex problems. Whether it’s PFAS or NAPL, Andrew’s grasp and deep understanding of the subsurface behaviours of these contaminants is translated into pictures with visually appealing clarity that almost anyone can understand.”
Guy Patrick
GeoEnviroPro Environmental Sciences Training, Vancouver, British Columbia
“Andrew displays a highly analytical approach to the topics under discussion. He is respectful, yet not afraid to offer an alternative perspective, even when that perspective goes against a prevailing narrative. And he consistently does so in a patient and reasonable manner. I have benefited greatly from seeing him think through many issues with a careful and judicious attitude.”
Tim Iverson
Facilitator, Minnesota Stoics
“Andrew’s efforts have positively impacted professionals and academics. His broad experience and knowledge in the field of groundwater is well-regarded and impressive. He has interacted with many professional groups and shared his knowledge with others, with some of his efforts being highly hydrophilanthropic. He is a solid hydrogeologist, easy to work with, and brings a wealth of experience and familiarity with real-world environmental challenges.”
Dave Kreamer, Ph.D.
Professor Emeritus University of Nevada, Las Vegas; Past President, International Association of Hydrogeologists; Co-author: Applied Hydrogeology, and Contaminant Hydrogeology
“Andrew is a well-known Hydrogeologist and expert in groundwater assessment. He is also a highly capable and valuable communicator of groundwater issues.”
Joe Cotruvo
Former Director, USEPA Drinking Water Standards Division
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Let’s Work Together
With decades of experience in groundwater science, I’m here to provide sustainable, practical solutions tailored to your needs. Whether you need consulting, research, or education, I can help you make informed decisions for the future of your groundwater resources.