That gas tank has evidently reached the end of its life:
Many of the nearby gas pipelines end in open stubs and a concrete crusher worked over one of the pads for a long-vanished cylindrical tank, so it looks like they’re scrapping the whole installation. I think the project to install an elevator for the Walkway lands nearby, which may explain everything.
I took the picture from the Walkway, aligning the SX230HS lens through the chain-link fence. Occasionally a small lens wins over more glass!