Carcharodon was BTinSF using a fake account. I have no idea why he felt a need to "quit" the forum as BT and then register an alter-ego, but that's what he did.
Anyway--here are snapshots of the proposed First/Mission megadevelopment I took on a quick walk-by a couple hours ago:
Here you see the row in question: the building on the corner of First and Stevenson, 40 First, is staying put:
Jessie Street will end in the middle of the block rather than extending to First Street--this intersection will disappear. It does appear there will be a tunnel-like walkway built on this axis through the new tower for peds, however:
This is Ellim, a really narrow alley that apparently will be completely elim-inated (haha). The buildings on either side will disappear, too:
Of these three, only little 84 First is going to remain:
Looking up First Street from Mission Street. The corner building will go, but the tiny building to the left of it on Mission will apparently stay.
Looking through the vacant lot from Mission Street:
The vacant lot from Ellim alley at Ecker Place, showing the brick backside of holdout 84 First Street: