Learn about Dr. Cohen's services, qualifications, 30+ years of experience, testimonials, widely recognized authorship and teaching, and unique videos at https://experthydrogeologist.com

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Andrew J.B. Cohen, PhD, PH, is a Contaminant Hydrogeologist with over 30 years of experience in consulting, teaching, and research focused on the characterization and remediation of contaminated groundwater.

Dr. Cohen is recognized internationally as a groundwater contamination expert, providing expert analysis of contaminated site data to identify contamination sources and establish causation. As an expert witness, he prepares detailed reports, rebuttals, and offers deposition and testimony support. Services include class certification analysis and PRP identification with apportionment of responsibility in multi-party contamination scenarios. He critically interprets and synthesizes historical and current site data—including investigation results and site-use records—to identify flaws in outdated conceptual models that are the basis of remedial and legal strategies. He also serves as a third-party technical advisor to legal teams or the companies responsible for remediation, working alongside or guiding their technical evaluations to ensure investigations are scientifically sound and cost-effective.

With a proven ability to present clear, persuasive findings, Dr. Cohen effectively communicates complex hydrogeological insights to stakeholders across industries.