Many occupants of one floor in a five-story, mixed- use building in a large city on the US East Coast made repeated complaints about the building's poor indoor environmental quality (IEQ). None of the occupants had become seriously ill, but many who used a training room for extended periods developed headaches and drowsiness and became lightheaded, reducing their concentration and productivity. Some reported that on occasion a strong odor of fuel filled the air. Elsewhere on the same floor, occupants in open and semi-open cubicles said their workspaces were either drafty or received little ventilation and that the area frequently smelled of food odors. Sometimes they smelled motor-vehicle exhaust even though the building had no windows that opened.
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