Natural Resources Wales (NRW) is considering a revised permit application for a landfill site near the Wales-England border to take up to 325,000 tonnes a year.
A previous application for Parry’s Quarry at Alltami, Flintshire, was refused by NRW in July 2015 because of concern at potential odour problems.
Now, based on new technology, RJS Civil Engineering has reapplied for an environmental permit for a non-hazardous site which will incorporate stable cells for the disposal of asbestos waste.
A consultation is underway with a public drop-in session in Mold on 17 May and the deadline for comments is 2 June.
Paul Wright, industry regulation team leader for NRW, said: “We only issue an environmental permit to a company if we are satisfied its detailed plans make it clear that it can operate safely, without harming the environment or local communities.
“We are now consulting with local people and relevant organisations and will scrutinise the application in detail.”
Details about the permit application are on the NRW website.