Chicago, IL: Grain Elevator transloading from barges to lakers

Ardi Carl posted
[Unfortunately, some shack is blocking the view of the boat.]
Kent Helbel Pulled that

This would be the elevator on the north side of the slip in the satelitte image below. It is served by both boats and barges. In fact, most of its business must be transloading from barges coming up the Illinois Waterway to Lakers because the few tracks going to this elevator have a lot of growth on them. What tracks that are left seem to be operated by the Chicago Rail Link. The tracks appear to be remnants of Rock Island, Pullman Standard, Michigan Central, Port of Chicago (Pennsy remnant), and Calumet Western Railway. The SPV Map labels the tracks as "a," but I can't find a key indicating what "a" stands for.
(Update: The northern elevator was Continental C House until its lease with the Port Authority expired in 1996. I think it is now abandoned. The Continental B House on the Calumet River is still active, but with different ownership.)

Satellite

Bird's Eye View

1990's photo provided by Greg White
"Picture 213 is of what we referred to as C House or Elevator C and was owned by the Chicago Port Authority.   CGC leased it until the lease expired in the fall of 1996.   At that point CGC did not renew the lease and facility closed.   To the left of C House is Indiana Grain.   It to, was owned by the Chicago Port Authority." [Personal Communication on 10-8-2019]

It looks like the biggest industries left in the Calumet Lake area are a golf course and a sewage treatment plant. The current euphemism I see used for "sewage treatment" is "water reclamation."