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Office of Indiana State Chemist Inspection Program

What our inspectors do:


Our inspectors serve as the field representatives for our agency. As such, an inspector is charged with effectively communicating and enforcing laws, rules and policies of the agency, inspecting facilities, reviewing records, collecting samples, collecting and documenting evidence, issuring regulatory orders and completing necessary reports for the administrative and laboratory programs.

The program relies heavily on inspections designed to ensure that manufacturers are using GMP's (Good Manufacturing Practices) in making feeds.

We are proud of our inspection staff! Read more about them:

charles thomas
Charles Thomas, Urban and Agricultural Product Inspector - Charles started out at Purdue in 1987 as a laboratory technician for the Animal Science Department. He joined the Office of Indiana State Chemist in 2000 as a chemist for the Pesticide Formulation Section and accepted a role as inspector in 2005.  He is a Purdue University graduate with a M.S. in Animal Science.  Charles recently took over the Urban and Agricultural Product Inspector position and covers the entire state.


Ken Neuhoff, Inspector - Ken came to us from Pulaski Farm Bureau Co-op where he was a branch manager. Ken has a B.S. in Agriculture from Purdue University. The area that Ken covers is the Northwest portion of the state.

Tom Smith, Inspector - Tom started with this office in 1999. Tom received a B.S. in Agriculture Education at Purdue University and is a Certified Crop Advisor. Tom's area is the West Central part of the state. 

Jean Schnur, Inspector - Jean covers the Southwestern region of the state. She graduated from Purdue with a B.S. degree in Agronomy in 1982. Jean was previously an Inspector for the State Chemist from 1986 to 1994 in the Southeast region of the state, leaving to raise her young family. She has been actively involved in the family farm, raising hay, goats, sheep and cattle before rejoining our staff in April 2014.

Bob Wakeman, Inspector - Our inspector for the East-Central region of Indiana is Bob Wakeman.  Bob started with the Office in 2003.  He is a Purdue University graduate with a B.S. in Agriculture, Farm Business and Management.

Stephen L. Estes, Inspector - Stephen was born, raised, and worked on his family’s diversified farm consisting of a grain, beef, and dairy operation. Stephen graduated from Western Kentucky University with a B.S. in Agriculture and a minor in Business Administration in 2010. After graduation he worked as a Field Representative in the dairy industry. Stephen joined the OISC Team in February of 2015 as an Inspector in the Southeast part of Indiana.

Anhydrous Ammonia Specialist:

Danny Starke - Danny began working for the Office of Indiana State Chemist (OISC) as the Agricultural Ammonia Specialist in August, 2013. Danny has a degree in Agricultural Engineering at Purdue University. Prior to joining OISC, Danny worked for 14 years with Crop Production Services in Rush County where he served as their operations manager. Danny and his wife live in Rush County with their son where they are active with 4-H, the Raleigh Fire Department, and the Rush County Ag Association. Danny's area covers the entire state of Indiana.

Fertilizer Control Specialist:

trish dunn
Trish Dunn - Trish is originally from southern Indiana. She graduated from Purdue University with a B.S. in Animal Science and an A.S. in Chemistry. She begain working with the Office of Indiana State Chemist in 2006 as an analytical chemist where her role was to analyze feed and fertilizer samples. In November of 2010 Trish became an inspector for OISC in the southeast part of Indiana. As an inspector she sampled feed, fertilizer, and seed and performed various facility inspections. In October of 2014 Trish started her role as the Fertilizer Control Specialist. In her current position, she is responsible for investigating fertilizer complaints as well as leading the containment of fertilizer and pesticide programs.