This comment is also posted in the EBOM 2009 - EQpc68 forum:

Does anyone have any experience with the GC/MS contaminant testing required by the IAQ Procedure? This method has great potential to help owners focus on source control, providing good IAQ while reducing fan energy and heat loss (for cold climates). But is the testing so costly that those savings are hard to justify?

What test methods are to be used for all of the chemicals in Table 1 which do not have a test method indicated?

Also, for NC projects can someone please clarify how the post-occupancy testing factors into the LEED certification process? The post-occupancy testing must take place within the first year of full occupancy, but does this mean that LEED certification will be postponed until this air test is successfully performed (with no contaminants exceeding thresholds)?

Finally, what happens if the post-occupancy test fails? Are corrective actions usually easy/inexpensive, or could this be a deal-breaker for nervous owners and project teams? I would think that in most cases source controls would be very effective, but what if the (newly constructed) ventilation system needs to up-sized to provide greater dilution?