Sorry I missed the prior words about the white paint, I was attempting to locate it by the description on the list of locations.
Even so, the logic remains. Should the paint fade or for some other reason the start mark need re-establishing, there is no measurement or offset from a fixed object that could be used to princely re-establish the point.
The exact location of mile marks is not as important becuase mile marks are not normally certified, but the exact locations of start and finish are.
The measure has provided "excellent" little diagrams of each mile mark, with showing the offset from a clearly marked immovable object. Thus allowing the re-establishment of the mark if it was lost.
What I am pointing out is that the start should have some similar offset measurement that would allow it to be re-established. For example 122'6" from the end of the south curb, or 22'6" S of lamp post number xxxxx.
Otherwise an excellent map.