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: October 30, 2026
Based on conversations with the staff member, after washing dishes, the staff member began feeling unwell and sought evaluation from a medical professional. The medical professional indicated that the symptoms may have been associated with potential mold exposure. The staff member reported that this was an isolated incident and had not occurred previously.
The dishwashing area consisted of ceramic tile flooring, ceramic tile walls, and fiber-reinforced plastic (FRP) ceiling tiles.
Grease residue, dust, and discoloration were observed on the ceramic tile walls near the ceiling. The accumulation of dust, grease, and soap residue may contribute to poor environmental conditions and potentially affect staff members with allergies or sensitivities.
The space was observed to have a plenum return and a dedicated exhaust fan. The exhaust fan was found to be inoperable at the time of the assessment.
No visible evidence of mold growth was observed on the equipment, floors, walls, ceiling tiles, or above the ceiling tiles. However, a pan containing stagnant water was observed underneath kitchen equipment outside the dishwashing area.
Mouse droppings were observed above the ceiling tile grid.
A floor drain was observed within the dishwashing area. No water was observed within the drain. If the drain trap has lost its water seal, sewer gases may enter the space.
A dishwashing liquid was observed next to a cardboard container of powdered bleach. The improper mixing of these products could result in a chemical reaction and the release of hazardous gases. The staff member reported that these products are rarely used during cleaning activities.
On November 9, 2026, staff reported that no other reactions had been observed since the concern was submitted.
Conclusion
The assessment did not identify visible mold growth within the dishwashing area or above the ceiling tiles. Therefore, the reported symptoms could not be attributed to mold based on the visual observations conducted during the assessment.
However, several environmental and operational conditions were identified that may contribute to poor indoor environmental quality or potential employee exposure.
Potential contributing factors include:
- The inoperable exhaust fan may allow odors, moisture, and airborne contaminants to accumulate within the space.
- Improper storage or accidental mixing of bleach and other cleaning products could result in the release of hazardous fumes.
- The dry floor drain may allow sewer gases to enter the space if the drain trap has lost its water seal.
- Accumulated dust, grease, and soap residue on the walls may contribute to environmental conditions that could affect individuals with allergies or sensitivities.
- Mouse droppings observed above the ceiling grid indicate a need for further pest management and appropriate cleaning.
The following corrective actions were completed or initiated in response to the assessment findings:
Integrated Pest Management (IPM) arranged for its board-approved pest management contractor to conduct the monthly inspection. No evidence of current pest activity was observed. Based on the inspection findings, the droppings identified by the Office of the Environment may be attributable to historical pest activity.
Kitchen staff cleaned the ceramic tile walls to remove accumulated dirt, grease, and residue.
Kitchen staff cleaned the pan containing stagnant water beneath the kitchen equipment.
The Office of the Environment replenished the floor drain with water to restore the water seal and help prevent potential sewer gas intrusion.
The Office of the Environment recommended storing bleach in a separate, designated dry storage area, away from other cleaning products, to reduce the potential for accidental mixing or chemical reactions.
Building Services (HVAC) found old starter on wall was off.
Turned on the starter and verified that the exhaust fan was operable. Kitchen staff was informed on how to turn fan on and off and requested that fan be switch off after using the dishwashing activities are completed.