Allison Beer McKenzie Architect, Director of Sustainability SHP Leading Design LEEDuser Expert389 thumbs up Thu, 07/22/2010 - 12:13 For LEED, samples only need to be taken at one time, but the must be taken during normal occupied hours with the HVAC system starting at normal daily start times and operating at the minimum outside airflow rate.
Allison Beer McKenzie Architect, Director of Sustainability SHP Leading Design LEEDuser Expert389 thumbs up