A new study is evaluating land uses near Charleston International Airport and Charleston Air Force Base's flight approach zones to try to steer away future incompatible land uses and development.

The properties fall within what's called "accident potential zones," areas close by the jointly used airport and Air Force base where planes fly low during takeoffs and landings.

The Berkeley-Charleston-Dorchester Council of Governments will hold a workshop 5-7 p.m. Tuesday on a study being conducted for the four at-risk zones in the flight paths around the airport. The zones extend well into long-developed areas of North Charleston, Hanahan and a bit of West Ashley.

COG senior planner Nick Pergakes said the study is being done to help implement recommendations in a land-use study prepared for the local Air Force base in 2008.

The effort does not affect developments already on the ground, Pergakes said. "They would be grandfathered in. This is for future undeveloped property."

The effort could include asking local governments in North Charleston, Hanahan and Charleston County for zoning changes that prohibit future developments where large numbers of people congregate in the at-risk areas, he said.

"You don't want something that has a lot of people gathering," Pergakes said. "You want low-intensity development."

The public workshop is at 1362 McMillan Ave., Suite 100, in North Charleston.

Reach Warren L. Wise at 937-5524 or twitter.com/warrenlancewise.