The Grand Tier, a 30-story high-rise at Broadway and 64th Street in Manhattan, features trappings typical of posh digs on the Upper West Side, including Central Park views and a lobby ornamented in French tapestry, silver travertine and Italian ironwork.
The 20-year-old tower also boasts a singular feature: In the basement, an array of pipes and compressors the size of six parking spaces scrubs exhaust from the building’s two natural gas boilers, separating carbon dioxide from nitrogen and oxygen, liquefying it and storing it in metal tanks.
