"This is an allegation without any basis and I am concerned that it reflects badly on council," he said.
"Councillors had received those reports."
Mr Cairns was responding to claims made by Stop the Stadium president Bev Butler that Otago regional councillors did not receive peer reviews on the Awatea St stadium before "making one of the biggest decisions they've ever had to make".
Stop the Stadium had planned to lodge complaints with the ombudsman's office and the auditor-general about the issue.
Those complaints were now unlikely to be made, she said.
Ms Butler confirmed Stop the Stadium was now looking at other issues concerning the consultation process of the stadium.
She declined to say what they were.
Dunedin City Council finance and strategy chairman Richard Walls said the peer reviews were prepared for the council and accusations they had not been distributed were incorrect.
"There is no point in rehashing something from several months ago that simply is not true. She [Ms Butler] simply has not done her homework.
"Some people just like seeing their names in the media and they are just interested in seeking publicity," he said.
The peer reviews included reports from PriceWaterhouseCoopers on financial projections, a report from Rider Levett Bucknall on quantity surveying and a Davis Langdon report "which pulled it all together", he said.
The contents of the peer review were initially excluded from the public but they "have subsequently been made available", he said.
"They helped the council make informed decisions," he said.
"I think there is so much information available some people are suffering from information overload."