Strong musty, moldy smell.
Wall unit functioning minimally.
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: February 26, 2021
Temperature (70.4 F), carbon dioxide (500 parts per million (ppm)), and carbon monoxide (0.0 ppm) were acceptable.
No concerns were identified with the functionality of the wall unit as temperatures were within the HCPSS comfort parameters.
The wall-mounted unit recently received general maintenance (12/4/2020, Work Order #163230).
Relative humidity (18.5%) would be considered low, however this is typical for HCPSS schools as the ventilation system does not humidify air before introducing it to occupied spaces. Humidification can introduce clinical health conditions such as humidifier fever.
A slight cardboard odor was identified within the space. Numerous cardboard boxes were located throughout the space.
No moldy/musty odors were identified.
The room was assessed for visible mold growth with particular attention to wood surfaces. No visible mold growth was identified.
The room was screened with a thermal infrared camera. No thermal anomalies indicative of moisture intrusion were identified.
Areas above the drop-ceiling were assessed with particular attention to the area of stained ceiling tiles. No significant rust, leaking/dripping water, visible mold, or mold odors were identified above the drop ceiling.
The metal roof deck was also scanned with a thermal infrared camera. No thermal anomalies indicative of moisture intrusion were identified.
It was reported that the leak was associated with the roof. The Office of the Environment contacted Building Maintenance (Roofing) who reported that there were some penetrations in the roof that needed to be patched. It was reported that something may have dropped on the roof while performing maintenance causing the damage. Subsequent rain then caused the moisture intrusion. Building Maintenance reported that the roof patching was already complete.