AUGUSTA — A discussion on “Concepts in Toxicology, Risk Assessment and Risk Management” will be held from 9 a.m. to 4:30 p.m. Friday, Nov. 30, at Days Inn in Augusta.

Instructor Marquita K. Hill, director of the Chemicals in the Environment Information Center at the University of Maine, will present material for laymen on concepts of dose, exposure and toxic effects of chemicals.

To register or for more information, call 581-2301 or write to the Environment Information Center, Jenness Hall, University of Maine, Orono 04469.