Members of the committee and planning board plan to discuss the changes at 6:30 tonight in the municipal building and at a meeting Tuesday.
Officials say the old program, which allowed farmers to sell the development rights on their land, was insufficient. It did not create open recreational spaces or do much to stop residential development or the airport expansion, they said.
"I'm just afraid that we're going to be built out," Gest said.
The original program created a "sending" area where space would be protected, and a "receiving" area where development would be allowed. Property owners in the sending area could sell the rights to develop their land to a buyer who would use those credits to develop land in the receiving area.
Changes may include a different receiving area and different zoning designations, such as industrial, residential or agricultural, officials said.
In some areas, landowners who have enrolled in the program would not be penalized, but those who have not yet enrolled may be prevented from using the development-rights program, township planner Marc Shuster said.
Lauren Mayk's e-mail address is lmayk@phillynews.com.