You want a consultant who works as hard as you. Hargis consultants provide turnkey program support from science to compliance. We protect your interests by serving as your partner and an extension of your staff. Our team helps you navigate the regulatory framework to complete complex projects on schedule. With Hargis as your partner, you have direct access to environmental experts in hydrogeology and remediation engineering at your fingertips. Connect with our experts today.

Scott F. Cunningham
Staff Engineer/O&M Manager

James S. Davis, PG, RG
Senior Hydrogeologist

Christian V. Diaz, EIT
Staff Engineer

Andrew M. Donnelly

Michael Hall
Environmental Technician

Andrew Halliburton, PG
Senior Hydrogeologist

David Hargis, PhD
President & CEO

Ross H. Horton, EIT
Senior Staff Engineer

Alex Jang  
Staff Engineer

Jennifer Layton-Villarino, MA
Chief Financial Officer

Christopher J. Legg, MS, RG
Principal Hydrogeologist

Leo S. Leonhart, PhD RG, CHG
Principal Hydrogeologist/Senior Technical Director

Michael R. Long, PG, CEM
Principal Hydrogeologist

Amanda Morris

Nathaniel B. Needham Environmental Remediation Technician
Steven P. Netto, MS, PG, CHG Senior Hydrogeologist
Roger A. Niemeyer, PG, CHG, CEG Principal Hydrogeologist
Christian A. Perkovac, PG Senior Hydrogeologist

Marty A. Pierson
Senior Engineering Technician

Stacia L. Prazen, MS, PG
Senior Hydrogeologist

Anthony R. Rossi, MS, PE Engineering Manager

Ruben E. Sanchez, EIT
Staff Engineer

Erica Sanders

Duran J. Sealee, M.S. Hydrogeologist

Brandon Thompson
Environmental Remediation Technician

Daniel A. Toffelmier, MS
Senior Project Hydrogeologist

Mary G. Tyer
Environmental Chemist/
Quality Assurance Manager

Peng Vang
Senior Field Technician

Brian R. Waggle, PG, CHG, CEM
Senior Hydrogeologist

Robin G. Weesner, MS, RG Hydrogeologist
Michael F. Wiese, Hydrogeologist/Field Technician Manager

We understand the obstacles you face and how to help you push past them.  Ready to complete your projects on-time, on-budget, and with no surprises?

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Our experts make data easy to understand, helping you communicate critical issues internally and externally. We are happy to share our extensive experience with easy to access case studies, blogs, and newsletters that address critical environmental, water resources, and regulatory issues.


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