BRIEF: Memphis area ozone pollution to hit dangerous levels Thursday.

Byline: Tom Charlier

June 29--Slack winds and unrelenting sunshine should combine to create unhealthy air Thursday, local officials say. The Health Department has issued a "Code Orange" alert for Shelby, Crittenden and DeSoto counties, where ozone pollution is expected to reach levels considered dangerous for small children, the elderly, people with existing breathing problems and outdoor laborers. No such alert has been issued for this afternoon. The alert means …