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 24, 2022
Approximately three square feet of mold growth was observed on the back exterior wall of Room 31.
The mold growth was found behind a poster that was removed at the end of the school-year.
The mold growth was visible in the shape of a rectangular poster with noticeable residue from tape used to hang the poster.
The mold growth likely occurred due to the temperature differential between the interior of the classroom and the exterior wall. The tape (and probably laminated poster) formed a vapor barrier, trapping moisture behind the poster.
Areas above the drop ceiling were assessed. No signs of moisture intrusion were observed.
The gypsum roof deck was probed with a moisture meter. No elevated moisture was detected.
The casework located underneath the former poster was also probed with a moisture meter. No elevated moisture was detected.
The Office of the Environment cleaned/disinfected the impacted area. The poster was not present at the time of the assessment. It should be cleaned or discarded depending on the condition of the poster. It can be cleaned with a rag and general cleaner obtained from Custodial Services.
Building Maintenance (Roofing) assessed the roof and exterior wall in the vicinity of the impacted area as a precaution. During the assessment, three penetrations were identified and sealed. These penetrations were minor and not believed to be the cause of the mold growth.