Pathway Interruption

Alternatives to installing MERV 8 filters include not using the building HVAC units, bringing in a stand-alone temporary system, or using natural ventilation.

O&M staff can use the IAQ plan for future renovations.

Fill out the LEED Online form and upload the IAQ plan, photos with SMACNA descriptions, and cut sheets of MERV filters used onsite during construction, if air handlers were used.

Replace construction filters with MERV 13 filters if the project is also attempting to earn credit for IEQc5: Indoor Environmental Pollutant Source Control.

If the building’s air handlers are used, replace all filters (MERV 8) required during construction with new filters—after construction and before occupants move into the space.

All five SMACNA control measures have to be documented in a photo log. It is easy to take pictures of covered ducts, but don’t forget to also take photos of more process-oriented strategies such as housekeeping and pathway interruption. The pictures should clearly show all the control measures adopted during construction. Photos should be submitted with a brief description, the time and date, and an indication of what SMACNA practice is demonstrated. 

Take photos throughout the construction process to demonstrate that your IAQ plan has been followed. There is no specific number of photos required, but they must be taken at two or more different stages of the project. For reference, prior to 2009 this credit required at least 16 photos—see the Documentation Toolkit for examples.

Wrap-Up and Documentation

Scheduling is a no-cost measure but needs to be coordinated before construction begins.