The runway was the subject of a long public inquiry which ended last summer. Supporters said it would create thousands of jobs and was essential for the economic well-being of the area. Opponents claimed it would cause widespread environmental damage.
The inspector's report is due to be published today.
Graham Stringer, chair of the Manchester airport board told BBC Radio Four's Today programme the expansion of Manchester airport would be good for jobs.
'The second runway is equivalent to about 10 car manufacturing plants. It will have a huge impact.'
If planning permission is given today, the runway could be in operation by the summer of 2000, he said.