KPBS AIRDATE: March 15, 1991 We're in a small resort town on the South Carolina coast. We hear the waves lap against the sand, and the clang of a distant lighthouse bell. But soon the seaside silence is shattered. We learn that chemicals and garbage have been dumped in the ocean. And a truckload of metaphorical garbage has been dumped on the lives of Lamar and Price, two troubled semi-siblings. In fact, "Sun Bearing Down"