PAY RAISES: Top managers in Orange County...

PAY RAISES: Top managers in Orange County can expect an average 5.9% salary increase in 1990, according to a new survey of planned merit raises released by an Irvine-based consultant. . . . That tops projected jumps of 5.7% in Los Angeles and 5.5% in San Diego. . . . The news is not as good for mid-level managers and hourly workers, whose projected pay raises of 5.3% fall well below figures in those neighboring counties and the state average.