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 of Assessment: June 6, 2023
A musty odor was noticed immediately upon entering the cafeteria.
The odor intensified near a floor scrubber, stored in the Cafeteria (near the stage).
The source of the odor was the dirty water reservoir of the floor scrubber which intensified upon opening the reservoir. It appeared dirty water had been left in the reservoir (should be removed after each use).
The custodian was notified to follow Custodial cleaning protocol for the equipment.
A thermal screening was conducted to identify other potential moisture sources. No thermal anomalies indicative of moisture intrusion were identified.
The Heating Ventilation and Air Conditioning (HVAC) unit that serves the cafeteria was assessed:
- The outdoor air dampers were open.
- The filters were moderately loaded with particulate.
- The drain pan was in acceptable condition.
- Some of the coils were corroded.
- The odor was present within the HVAC system relief air. It is believed that this occurred because the custodian was performing maintenance/cleaning of the scrubber at the same time the HVAC system was being assessed.
Custodial Services cleaned and disinfected the reservoir and allowed the unit to dry outside. Custodial Services is to ensure proper cleaning/maintenance is completed as scheduled to avoid future odor concerns.
A work order was created for Building Maintenance (HVAC) to address the HVAC filters and coils within the unit.