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: September 23, 2022
This IEQ Concern was submitted while a separate IEQ Concern assessment was underway (regarding wet carpet). For additional information regarding the wet carpet noted, please see IEQ Concern #CXXCMS2022000233 (dated August 16, 2022).
The Office of the Environment met with several concerned individuals within the Administrative Office of the school to review the response actions associated with the above referenced IEQ Concern. During discussions it was reported that a leak occurred in the adjoining mail room over the Summer. The leak was associated with the rooms wall-mounted split system and the leak had been repaired, however the Office of the Environment was not made aware of the leak, which impacted the casework within the space.
It was reported that fans were placed on the carpet during the leak to facilitate drying, however it did not appear that attention was given to the base plate of the cabinetry (removal of cove base, drill holes, etc.). The carpet was measured with a moisture meter and was dry at the time of the assessment.
After reviewing the casework, mold growth was identified in the upper cabinet (backing) that was next to the Heating Ventilation and Air Conditioning (HVAC) equipment. Additionally, elevated moisture was detected in the baseplate of the cabinetry (no mold growth observed) and the countertop was delaminated in several locations.
Areas above the drop ceiling in the Administrative Office were assessed no signs of odors, mold growth, or moisture intrusion concerns were identified. Evidence of a pest (mouse droppings (possibly historic)) was identified above the drop ceiling to the right of the entry door (when entering).
No mold growth related to an extended period of relative humidity was observed on any of the surfaces assessed.
While assessing the main office, the Conference Room and Assistant Principal's (AP) Office were also assessed. Both of these spaces are part of an addition (2004-2005) and have a different construction history when compared to the main office.
No significant concerns were identified in the two spaces. However, suspect mold growth was observed on the backsides of the supply diffusers within the the Conference Room and AP's Office. This can occur due to high summer time humidity or over cooling which causes condensation on the metal diffusers. Because the mold growth impacted the backside of the diffuser (not within the air stream), the plenum area being under negative pressure (smoke tested), and due to the limited amount, this condition was not expected to significantly impact indoor air quality. It should be noted that this condition was not present in the Main Office.
The Heating Ventilation and Air Conditioning (HVAC) unit that serves the area was assessed.
- The outside air dampers were open.
- The filters, drain pan, and coils were in good condition.
Other findings that may impact indoor environmental quality/general safety:
- A disinfectant spray cleaner was observed at one of the secretaries desks.
- A space heater was observed under one of the secretaries desk.
- An artificial plant was observed on a desk.
The mold and water impacted cabinetry and countertops were removed by a board-approved restoration contractor.
A work order was submitted to the Integrated Pest Management (IPM) Department regarding the mouse droppings. The IPM Department assessed, vacuumed droppings, disinfected, and further assessed. It was indicated that no other visible pest activity was found at the time of assessment.
Building Maintenance (Heating Ventilation and Air Conditioning) removed and replaced the impacted supply diffusers.
Artificial plants easily collect dust (potential allergen) and are difficult to clean.
Non-issued disinfectant sprays are not permitted since they can be an airborne irritant when used. Disinfectant wipes and/or the approved cleaning solution from Custodial are permitted.
It is the Office of the Environment's understanding space heaters are not permitted per the Fire Marshall.
Administration is to work with staff to remove these items.