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: August 24, 2023
Brown/green staining was observed on the block wall facing the bus loop. This staining did not appear to be mold growth however a tape lift sample and a swab sample were collected. Elevated mold was not detected in either sample.
Cove base was firmly adhered to the block wall. Elevated moisture conditions usually make the cove base mastic less tacky. This condition was not present.
The paint on the back wall was bubbling, indicative of moisture intrusion. These windows were previously re-caulked (see IEQ Concern CXMWMS201800005F). It may be that the paint peeling may be evidence of conditions prior to the leak being repaired in 2018.
Note the paint was not bubbling or peeling in the location where the brown/green staining was observed.
A stained ceiling tile was observed. No moisture concerns such as staining, mold growth, or malodors were identified above the drop-ceiling.
When viewing the exterior of the structure, a condensate pipe for Heating Ventilation and Air Conditioning (HVAC) was observed. This pipe drains frequently during the cooling season and outlets very close to the building, causing water to pond along the wall in question.
Building Maintenance assessed the exterior of the structure and did not identify any obvious/visual concerns with the building envelope. They also observed the condensate pipe noted above and its potential to promote moisture wicking through the wall; but indicated that based on the configuration it would be difficult to run the drain farther from the building without interfering with Grounds Maintenance equipment.
The Office of the Environment recommends the areas be cleaned and painted so that they can be monitored. If paint begins to peel or become stained again, this might indicate an current problem. It is possible that the sealing of the windows in 2018 corrected the issue.
Custodial Services is to place a work order for the stained ceiling tile if one is not already in progress.