Practically everyone in Tarrant County is aware of the Naval Air Station Fort Worth Joint Reserve Base (NASJRB), which came into existence in 1994 after the Base Realignment and Closure Commission recommended that Carswell Air Force Base be closed.What many people may not know is that the Department of Defense defines large areas at the ends of runways as Accident Potential Zones (APZs), and describes what uses on those private and public lands are compatible or incompatible within those zones. The purpose of such designations is to protect the bases, but also to protect people who live, work or frequent places under the flight paths of planes that use those runways.For months now, the Fort Worth Planning and Development Department has been working on an amendment to the city zoning ordinance that would create an Airport Overlay district and Compatible Use Zone subdistricts on the southern and northern ends of the runways at NASJRB.The plan covers more than 1,900 acres and includes residences, schools, churches, parks and commercial sites like Ridgmar Mall, all of which would be considered incompatible for the APZs. As you might imagine, that caused great concern for property owners in the area.Since April, mainly at the urging of Councilman Dennis Shingleton, the City Council several times has postponed voting on the new ordinance to give the city staff a chance to refine it and communicate more with residents and business owners. The delay apparently has been worth it.The staff did an incredible job in making contact with those most affected, notifying more than 900 property owners of the proposed changes and alerting several neighborhood associations, civic clubs, school districts and businesses.Although many properties are listed as incompatible, the ordinance will allow them to continue in their present form indefinitely. Single-family homes would be permitted to expand and to rebuild, as that would not add to population density. While other properties would be allowed to rebuild to the same use and same square footage, they would be restricted from increasing their size or changing use unless the changes meant fewer people in the flight path.The council is expected to approve the ordinance Tuesday night. That will be the culmination of a lot of hard work and a significant amount of communication.