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: August 14 and 15, 2015
The Office of the Environment reviewed each room that was reporting mold growth on the carpet. Each room was located within a single Heating Ventilation and Air Conditioning zone (ACU-4).
The Office of the Environment reviewed each classroom within ACU-4 which included three pods (62-68 (excluding 64 which is in a different HVAC zone, 77-82, and 70-75).
Visible mold growth was observed sporadically in certain classrooms and not at all in others.
Impacted materials included patches of carpet (no more than one square foot per observation), door frames/doors to closets, and within student desks.
It was reported that HVAC unit ACU-4 had tripped and was not operating. The unit was operational when the Office of the Environment arrived onsite. The probable cause was the lack of unit operation during a time of regional high humidity/dew point.
A board-approved restoration contractor cleaned/disinfected surfaces in the space regardless of impact to include desks, tables, chairs, doors/door frames, etc. Additionally, the carpet was cleaned after the items were cleaned/disinfected.
The Office of the Environment inspected the areas after the cleaning and identifed a few areas that required additional cleaning. These were cleaned/disinfected upon discovery. It was also identifed that the carpet had not fully dried from the cleaning, creating a potential slip/trip hazard. The contractor returned to place fans/dehumidifiers to dry out the carpet.