EMPLOYEE WAS DRIVING A SMALL FORD TRACTOR WITH A TANK ATTACHED SPRAYING GRAZON ONTO THISTLES. HE COMPLAINED OF NAUSEA AND DIZZINESS. HE WAS TAKEN TO ER AND CHECKED OUT. HE WAS QUICKLY RELEASED AND TOLD TO DRINK LOTS OF WATER AND REPORT TO WORK THE NEXT MORNING. THE DOCTOR DIAGNOSED CHEMICAL EXPOSURE AND FELT HE MAY HAVE HAD AN ALLERGIC REACTION TO SOMETHING IN THE FIELD.