Marris said it was made clear at that meeting that the wharf was closing for repairs and that vessels would use a wharf at nearby Sandspit Yacht Club while wharf strengthening was completed. He said the announcement came out of the blue and that wharf users had not been consulted.
But Marris said it was time to engage constructively with AT rather than seek recriminations.
Under the AT timetable, work on stage one is due to start on October 9 and end on December 22. Khan's letter said this meant the improved wharf would be open during the peak Christmas to February season.
Stage two, involving redecking the wharf wings, would start on February 22. The $400,000 project means weight limits on the wharf will increase from the existing 10 tonnes to 14 tonnes.
The wharf is used by Kawau residents and people who own holiday homes, owners of island businesses, tourists visiting the historic Mansion House - once owned by Governor Sir George Grey - fishing boats and Coastguard vessels.
Marris said a meeting at Sandspit was planned with AT and commercial users of the wharf to discuss operational issues during the repair work.