INCIDENT APPEARS TO HAVE BEEN CAUSED BY AN S02 RELEASE AT A NEIGHBORING CHEMICAL PLANT (BREEZE WAS BLOWING FROM E/NE AND HIGH CLOUDS). EMPLOYEE WAS WORKING ON A DAM SPILLWAY, 2 MILES EAST OF THE CHEMICAL PLANT WHEN HE SUFFERED BURNED EYES AND A SORE THROAT. INVESTIGATION OF THIS INCIDENT STILL IN PROGRESS.