**I did post this under the IEQc3.1 credit in Schools, too. My project is a school, but I wanted to make sure this question was seen, as my question is not "school only". I hope that is ok.**

We have our preliminary review comments back and had a comment on this credit about the timeline of replacing the filters.

The contractor replaced the filters as a part of their substantial completion punchlist. Substantial completion was given 13 days after the the filters were replaced as part of the punchlist. During that period there was not any construction, only punchlist items. A CO was not given from the City until 3 weeks after the substantial completion date because of some exterior items (landscaping), nothing to do with the interior. The owner then immediately occupied the building once the CO was given.

In the preliminary submittal this was not explained, basically only the dates were given. Would the above comply with "The contractor should replace all filtration media just before occupancy, installing only a single set
of final filtration media."? Once the filtration was replaced there was no construction work but the owner did not officially occupy until about 5 weeks later.