What's that giant hole filled with water at Lafayette and St. Aubin?

Why the heck is there a giant, water-filled hole in the ground that seemingly hasn't been touched in over a year at the Pullman Parc development site in the Elmwood Park neighborhood?

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Nick Manes , ,Aubin Street ,Pullman Parc ,Elmwood Park ,Lake Pullman ,Bloomfield Hills Based Robertson ,Google Earth ,