W&M recently provided indoor air quality assessment and testing services for a retail establishment after employees noticed an odor and began experiencing respiratory irritation. Air samples were analyzed for volatile organic compounds (VOCs) and formaldehyde and compared to a baseline outdoor air samples. W&M also used a photoionization detector (PID) and determined that there was detectable concentration of VOCs at the entrance to the store. Review of data from the sampling indicated that the most likely source of the VOCs was some off-gassing occurring from the products on display and/or building materials inside the store. If you have questions about this article please contact Lori Siegelman or Heather Woodward.