The reorientation of flight paths out of Denver International Airport was approved on Friday by federal aviation regulators, according to The Denver Post.

The Federal Aviation Administration will begin the Denver Metroplex Project on March 26, and stated in a press release that the decision was made after the agency “conducted thorough environmental reviews, including 24 public workshops and approximately 78 stakeholder briefings in the Denver metro area.” 

The Post reports that the decision came despite protests from neighborhoods worrying about increased air traffic over homes. Gilpin County residents, for example, are concerned that the shift of westbound air traffic to the south will disturb historic sites, aside from the obvious issue of increased noise from planes.

Despite FAA’s statement that it “held two public comment periods totaling 75 days and evaluated and responded to more than 975 comments,” Gilpin County residents told The Post that they never got a meeting, and letters to the FAA from the offices of U.S. Rep. Joe Neguse and U.S. Sen. Michael Bennet went unanswered.

But FAA attests that the decision will bring more efficiency and safety to air traffic, particularly through “cutting-edge satellite navigation.”

Centennial Airport, however, is not on board. A spokeswoman for the airport said a lawsuit against the plan was imminent, according to The Post.