Locals in Finglas and Sword are concerned Dublin Airport could be operating 'at full blast' 24-hours a day in the future.
It comes as regulators have suggested banning nighttime flights at Dublin Airport's new runway to cut down on noise.
The Aircraft Noise Competent Authority says restrictions on the new north runway - which is due to open next year - would cover midnight to 6 am.
For the existing runway, there'd be a 'noise budget' between 11 pm and 7 am - including a restriction on "very loud aircraft" flying at night.
There'd also be a €20,000 'sound insulation grant' provided to local residents most affected by the nighttime noise at the airport.
There'll now be a public consultation process, with locals having until February 28th to send in their submissions.
Speaking on Newstalk Breakfast, independent Councillor for Swords Joe Newman said that "quite a number" of resident groups have concerns about the planned expansion at Dublin airport.
He observed: “I live out beside the airport… we bought a house in around 1974. The noise then and the traffic then was a whole lot different than it is now, but I didn’t have many options - I needed to find a home.
“I was driven down that road, as many other people are.
“Most people don’t have big issues about the airport, but it’s just the way it’s developing and growing.
"Seemingly there are projections that in 2028 there’s going to be 40 million passengers… that means in my eyes and other people’s eyes, the airport is going to be open 24 hours a day and running at full blast.”
Cllr Newman noted that previous conditions attached to the development of the new runway had restricted nighttime flights, as well as a limit of 65 flights per night on the existing runway.
The report published by the ANCA today proposes that the 65 nighttime flight cap would instead be replaced with the new 'noise budget' system.