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FAQs about IEQc3.2 :

I'm confused about the 11/1/2011 LEED addendum that removed the "1/25,000 SF or each contiguous area whichever is larger" language from the credit requirement. How do we determine the number of sampling locations for testing?

Is it possible for the flush-out start date to vary by ventilation zone?

Should a parking garage be included in a flush-out, if it is in a basement and not fully open to the outdoors?

Do the outdoor air minimum quantities have to be met for each individual space, or for the building square footage as a whole?

Do non-regularly occupied areas such as bathrooms and corridors have to be flushed-out?

For LEED NC addition projects, do existing non-renovated areas need to be flushed-out or tested?

For IAQ testing, how many sample points are necessary in non-mechanically ventilated spaces?

Can testing be done over various days?

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Forum discussion

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

IEQc3.2 VOC Testing

I have a 191,000 sf nc school that will require 11 sample points. When performing a preliminary screening test using a PID, it was found that the inside TVOC levels were 40% less than outdoor level. However, the inside levels were still more than 10x the LEED limit. We have had very hot and humid weather and the building is surrounded by new hot top, it is mid August and the natural vegetation beginning to die off producing bio-effluents, etc. Filters with an appropriate merv rating will reduce particulate levels but not vocs. Is there a varience in the standard to allow indoor/outdoor comparisons to deal with this?

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Profile picture for user dconnelly
Dylan Connelly
Mechanical Engineer
Integral Group
LEEDuser Expert
342 thumbs up

Mon, 08/13/2012 - 15:59

Mark, I haven't heard of a variance for your situation, but you may want to inquire for a LEED Interpretation. You might also consider going for this credit by the flush out method (although the humid OA might also be an issue). One way to reduce VOCs by filtration is to use a Carbon filter.

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