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)
No mold growth or dust was observed on the ceiling vents. It was reported that the vents were recently cleaned. Vents often collect dust due to the slowing of air flow at the vent due to the air changing direction. This causes deposition. This does not represent an environmental concern so long as regular cleaning continues to occur.
The black material on the floor was not present during the assessment, however a staff member had a picture of the material. Based on the location of the material (near the HCPSS issued air purifier) and the texture/color of the material (based on photograph), the black material was believed to be activated carbon from the air purifier.
The air purifier was turned on and a black material was discharged from the air purifier, further confirming the above. The unit was left on and no additional material was discharged. The discharged material was discarded.
Building Maintenance (HVAC) reported that the filters were changed in August of 2024 and some granulated activated carbon granules had been released from the old filter during the change.
The Office of the Environment also probed the drywall in the area of concern with a moisture meter. No elevated moisture was detected.
The floor tile was well adhered, indicating there was not a moisture concern from below the floor tile.
The activated carbon does not represent an environmental concern. It appears that the majority of the loose granules from the old filter have been discharged from the unit. If additional granules are discharged they can be cleaned with a HEPA vacuum. If additional granules continue to be discharged, you can submit a work order to Building Maintenance for them to dissemble the air purifer and vacuum /remove any loose granules that may be present.