Office of the Texas State Chemist website

Administration Personnel


Dr. Timothy J. Herrman


Dr. Timothy J. Herrman

State Chemist and Director


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Roger D. Hoestenbach, Jr.


Roger D. Hoestenbach, Jr.

Associate Director


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Benjamin L. Jones


Benjamin L. Jones

Assistant Director


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Dr. Jim E. Balthrop


Dr. Jim E. Balthrop

Manager, Quality Assurance


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Tommie W. Shrode


Tommie W. Shrode

Business Manager


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Argentina G. Vindiola


Argentina G. Vindiola

Manager, Special Projects & Outside Customers


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Sara M. Williams


Sara M. Williams

Manager, Laboratory Operations


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Mark L. Broussard


Mark L. Broussard

Network/Systems Administrator


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Ricky R. Schroeder


Ricky R. Schroeder

Manager, Feed & Fertilizer Registration


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John W. See, III


John W. See, III

Supervisory Staff Accountant


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Dr. Kyung-Min Lee


Dr. Kyung-Min Lee

Assistant Research Scientist


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Arun Manandhar


Arun Manandhar

System Analyst


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James A. Embry


James A. Embry

Analytical Chemist III


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Michael M. Runyon


Michael M. Runyon

Analytical Chemist III


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Lori J. Zboril


Lori J. Zboril

Administrative Coordinator


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