Despite a 15-year campaign organised by neighbouring residents, work will commence this week on the expansion of the Mt Cotton base.
Barro’s Rohan Cox signed and issued a letter to nearby residents stating the construction on the southside quarry would be between 7 am and 6 pm Monday to Friday.
Resident Anthony Moloney, whose property is less than 200m from the site, believes state regulations are not tough enough.
“The quarry is allowed to make noise up to three times the levels of background noise,” said Mr Moloney.