The effects of reduced ventilation on indoor air quality in an office building.

Describes the monitoring of indoor air quality in a San Francisco office building where occupants had registered eye, nose and throat irritation complaints. Data was taken under two different ventilation rates. Carbon dioxide concentrations increased as the ventilation rate decreased, odour perceptibility increased slightly at the lowest ventilation rate, and other pollutants generally showed very low concentrations, which increased when ventilation was reduced. In no case, however, did levels exceed current healthstandards for outdoor air, nor was any one contaminant found to be responsible for the medical symptoms reported by occupants.