Topic for my Research...Healthy Food

For my Research Paper I am going to write about the Health regulations that food goes through before we eat it. I want to put special emphasize on pesticides and hormone enhancements put on certain foods and how to help people recognize and search for healthy food that contain the least amount of pesticides/hormones.
for my “non-book/non-internet source” I'm going to attempt to talk to the people in charge of getting food for the cafeteria and the pub and ask them what sort of Health Regulations they go through to ensure that the food we eat is safe.
I will also try to go to some local food fair near where I live and ask them if they have ways of producing food with the least use of pesticides and hormone implants