EPA conducted a pilot study to evaluate source management and control strategies used in the design, construction, and commissioning of a new large building. Strategies employed to minimize volatile organic compound (VOC) contamination in the occupied building included selection of low emitting materials, staged construction and installation of materials and furnishings, and a 90-day 100% outdoor air flush prior to occupancy. Air Quality Science (AQS) collected both the source emission rate data generated in product compliance testing and those to characterize building ventilation rates and VOC concentrations before, during, and after the flush out. The source loading and emission rate data, building characteristics, and ventilation data were input into an indoor air model. Predicted VOC concentrations were compared with those observed which remained above predicted for at least 30 days beyond the 90-day flush out. Predominant VOC emissions were characteristic of a carpet tile installed on four of six floors. It is concluded that long term product emissions tests may be necessary to characterize some products and that a strategy is needed to ensure that installed products are representative of products tested for compliance.