The 09/27/2012 HPRB hearing included McMillan.
See the full Email from the DC Historic Preservation Office (HPO) here
Here is the section on McMillan:
SEPTEMBER 27TH AGENDA
McMillan Park Reservoir, North Capitol Street & Michigan Avenue, NW: Consideration of draft master plan and design guidelines (continuation of July 12th meeting).
The Board members expressed appreciation for the tremendous amount of thought put into the plan, the efforts made to date (including improvements made since presented in July) and their belief that the plan was moving in the right direction. However, the members found that in trying to relate too closely to the many disparate conditions around it, the plan resulted in a loss of McMillan as a unique place that is distinct from what is around it. The Board members specifically cited the north and south edge conditions and the loss of the site’s topographical plinth as problematic, and found the design guidelines to be too generic and not strong enough in citing what was important in preserving at this site. The Board asked that the design guidelines be revised and represented.