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)
This information provided is a continuation of an assessment that began last year. Please see IEQ Concern CXXGMS20190000B7 for background information.
In response to the concern received after returning to work, the Office of the Environment (OOE) consulted with the Integrated Pest Management (IPM) department for additional insight. The IPM Department recommended the OOE consult with a Medical Entomologist. It should be noted that no significant pest infestation has been identified to date.
Because the Administrative Office is carpeted, the Medical Entomologist suggested that there is a potential for carpet fibers to cause the concerns/health symptoms reported from the employees at the school. The Medical Entomologist indicated that over time there is a possibility for the carpet fibers to “dry out.” If the carpet is in a dehydrated state, there is a potential for small fibers/particles to become dislodged and come in contact with occupants. The Entomologist suggested that the most efficient way to eliminate dehydrated carpet fibers from becoming airborne is to “rehydrate” the carpet using wet cleaning methods.
No other concerns such as mold growth or fire/smoke damage were identified.
The carpet was cleaned using wet methods by Custodial Services on August 30, 2019. The purpose of the cleaning was to “rehydrate” the carpet not to remediate a suspect contaminant. It should be noted that the HVAC was operated over the weekend to properly ventilate the space and facilitate drying.