About our Soil Scientists
The Missouri Department of Health and Senior Services requires 15 hours of soil courses including three hours of soil morphology and classification from an accredited college or university to be a registered On-Site Soils Evaluator.  In addition to the minimum State requirements for an On-Site Soils Evaluator, all our soil scientists either have a Bachelors degree or Masters degree in soil science.

John H. Bauer
B.S. Plant and Soil Science, Southern Illinois University-Carbondale (1976)
M.S. Plant and Soil Science with emphasis in soil science, Southern Illinois University-Carbondale (1978)
Soil Scientist/Agronomist/Mine Reclamation, with 30+ years of experience.
President/Soil Scientist, On-Site Soils, Inc. since 1997

Member:
American Society of Agronomy
Soil Science Society of America
Missouri Small Flows Organization (MSO)
Eastern Missouri Small Flows Organization (EMSO)

Professional Certifications:
Certified Professional Soil Agronomist - ARCPACS;
Certified Professional Soil Scientist - ARCPACS;
Registered On-Site Soils Evaluator - Missouri Department of Health and Senior Services

Matthew W. Roth
B.S. Agronomy with emphasis in soil science, Southwest Missouri State (1994)
Soil Scientist/Wetland Scientist, with 10+ years of experience.
Vice President/Soil Scientist, On-Site Soils, Inc. since 1998

Member:
Missouri Association of Professional Soil Scientists (MAPSS)
Society of Wetland Scientist
Missouri Small Flows Organization (MSO)
Eastern Missouri Small Flows Organization (EMSO)

Professional Certifications:
Certified Professional Soil Classifier (by exam October 1996) - MAPSS;
Registered On-Site Soil Evaluator - Missouri Department of Health and Senior Services;

Benjamin L. Borth
B.S. Plant and Soil Science with emphasis in soil science, University of Kentucky (2004)
Agronomist/Soil Scientist, with 4+ years of experience.
Soil Scientist, On-Site Soils, Inc. since 2004

Member:
Missouri Small Flows Organization (MSO)
Eastern Missouri Small Flows Organization (EMSO)

Professional Certifications:
Registered On-Site Soil Evaluator - Missouri Department of Health and Senior Services

Joshua T. Mahon
B.S. Agronomy with emphasis in soil science, Missouri State (2006)
Soil Scientist, with 2+ years of experience.
Soil Scientist, On-Site Soils, Inc. since 2006

Member:
Missouri Small Flows Organization (MSO)
Eastern Missouri Small Flows Organization (EMSO)

Professional Certifications:
Registered On-Site Soil Evaluator - Missouri Department of Health and Senior Services
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