Identify deficiencies that may impact IEQ and/or sources of odor concerns. Typically includes the following depending on the nature of concern, but not limited to:
- interview/questionnaire of concern individual(s)
- inspection above drop ceiling (condition of roof deck, pipe insulation, return air plenum)
- inspection of ventilation system (operation of variable air volume box and outdoor air dampers, check controls, measurements of carbon dioxide, temperature and relative humidity, sources near outdoor air intake, measure return and supply air volume, cleanliness of coils, liner and condensate pan)
- inspection of exterior
- inspection below drop ceiling (housekeeping, sink and floor drain traps, signs of past and present moisture concern via visual and/or moisture meter, mold growth, ensure connection of current and capping of abandoned sanitary vents, odorizers, excessive plants and fabric items, identify potential pathways, and measure volatile organic compounds, carbon monoxide, and lighting)
Date(s) of Assessment: October 18, 2023
The Office of the Environment visited prior to the Heating Ventilation and Air Conditioning (HVAC) unit being on.
No odors were sensed prior to the unit running. The unit began operation shortly after arrival. No odors were sensed emanating from the supply diffusers and no odors were sensed in the general occupied space. No visible particulate was observed emanating from the diffusers upon unit start-up.
A supply diffuser grille was removed so the interior of the duct could be observed. No excess dust or suspect mold growth was observed on the interior of the ducts. No odors were sensed upon removal of the grille.
Various areas (near windows and doors) were probed with a moisture meter. No elevated moisture was detected in the drywall indicative of a leak.
Surfaces were assessed for visible mold growth that could result from an extended period of elevated humidity. No visible mold growth was observed.
The exterior portion of the portable was assessed. No obvious signs of damage that could lead to moisture intrusion was observed.
While walking the exterior of the portable a "buzzing" noise was identified and appears to be associated with the HVAC units fan. No odors were emanating from this location.
A work order was created for Building Maintenance (HVAC) to assess and address the "buzzing" sound that appears to be associated with the HVAC units fan. The Office of the Environment also requested the return plenum be vacuumed/cleaned as a precaution.