The topping out of Sentinel Square-Phase I was celebrated today.  This downtown Washington, D.C. project is a Class A 12-story, 413,000 sf office building with three levels of below-grade parking, located at 90 K Street, NE in the revitalized NoMa (North of Massachusetts Avenue) corridor.  The project is registered with the USGBC, with the goal of obtaining LEED [...]