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Should we install furniture and furnishings before IAQ testing or flushout?

The air temperature and/or relative humidity went out of the credit requirement specifications for a portion of the flush-out. What do we do? Can we extend the flush-out for the equivalent amount of time to make up for it?

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NC-2009 IEQc3.2:Construction IAQ Management Plan—Before Occupancy

Credit 3.2, Option 1, Path 2

We are the GC for a new small (4,000 SF) Leed Certified fast food restaurant with 3,800 CFM of outside air when occupied. We plan to do our initial 3,500 CF/SF flushout over a weekend. The remaining flushout will be carried out over the next 8 days when the building will be open for business by continuously operating the HVAC system on the occupied cycle during times when it is open as well as closed to customers. The requirements says that the flush out must start a minimum of 3 hours before occupancy so I assume that it can start any time before that. Does anyone see a problem with this strategy. Also, the facility has a walk-in cooler and freezer without any supply air. Can fans be used during the initial flush-out to supply the full 14,000 CF/SF prior to the final flush-out that will take place when the facility will be open and the cooler/freezers needed to be operational?

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David Hubka
Director of Operations
Transwestern Sustainability Services
LEEDuser Basic Member
355 thumbs up

Wed, 03/23/2011 - 14:02

Yes, you can start anytime before the 3-hour minimum; this will get you up to the required 14,000 Cubic Feet of Outside air per Square Foot of floor area quicker. (make sure to follow the ASHRAE ventilation rates during occupancy if they require more than 0.3 CFM / Sq Ft of floor area) The requirements of this credit apply to all spaces within the building envelope. This credit does not differentiate between regularly occupied and non-regularly-occupied spaces. Temporary fans used to flushout the coolers and freezers during the initial flushout will qualify as long as they provide 14,000 Cubic Feet of Outside air per square feet of floor area.

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