This is one part of a 3 part report concluded by Remington and Vernick regarding the WTPS HVAC system. The initial report which, was submitted in July, with updates being submitted on 8/24 and 8/28.

The July initial report did not include the diagnostics that you will see on the 8/28 report that specifically indicates which units can have the filtration system upgraded to MERV 13. Initially, it was estimated that 20 to 25% of our units could be upgraded.

Now that the full analysis has been completed, that number was upgraded to 52%  of our units that can be upgraded, per Annina Hogan.  You can find this chart in the 7/28 report in Appendix E.