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 Soil Evaluator.  In addition to the minimum State requirements for a Soil Evaluator, all our soil scientists either have a Bachelors degree or Masters degree in soil science.

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Matthew W. Roth

B.S. Agronomy with emphasis in soil science, Southwest Missouri State (1994)
Soil Scientist/Wetland Scientist, with 15+ years of experience.
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 Soil Evaluator – Missouri Department of Health and Senior Services (DHSS)

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Evelyn Mann

B.S. Soil Science, University of Missouri (2019)
Project Scientist, On-Site Soils, Inc. since 2019

Member:
Missouri Small Flows Organization (MSO), Soil and Water Conservation Society

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