Wilkinson said he believed he had permission to dump materials at the site and had stopped doing so when the Mackenzie District Council, which owns the land, asked him to do so. However, council says no such permission was given for what they labelled “illegal dumping” and it is now investigating. JOHN BISSET/Stuff The Mackenzie District Council, which owns the Pukaki Airport, claims Tricorp did not have permission to dump in the pit on the property. “Council would not agree to dumping of waste on council owned or managed land without understanding the nature of the waste, the regulatory implications, or having a written agreement in place,’’ a council spokesperson said.