I don't know how we should treat this note. But I will post what I am finding while trying to look into this. For disclosure, I did not check this in person (which might be enough to not proceed with anything on the face) but if I did get out there, I suspect that this is a restricted area given that it's connected to the airport runway and is marked with a private gate node.

While checking the City's SLRN, it does report two Ellice Streets on address search. One is S4T and points to a residential block to the north of this point. Another is S4W and points to this lot here. What's interesting is that the both "streets" seem to be in the same range of latitude -- they line up vertically. That makes me think that there might just be some geocoding thing going on with the City's SLRN that makes it think this road is a continuation of the one to the north.