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 22, and October 12 and 2023
The temperature (72.1 degrees Fahrenheit (F)), relative humidity (56.2%), carbon dioxide (481 parts per million (ppm)), carbon monoxide (0.0 ppm), and volatile organic compounds (VOCs) were acceptable.
No elevated moisture was detected in the carpet.
No odors or mold/moisture concerns were identified above the drop ceiling.
Elevated moisture was not detected in the kickplates of the casework. Moisture slightly above baseline levels (in comparison to other kickplates) was detected in the cabinet, below the window.
To further assess the potential for a moisture related issue with the bookcase under the window, a board-approved restoration contractor removed the bookcase for further assessment.
No concerns were identified (flaking paint indicative of moisture around the window, visible evidence of mold/water staining, or odors) Additionally, moisture readings of the kickplates the day of the cabinet removal were not elevated.
Upon removal of the cabinet, former condensate drain pipes were located underneath the bookshelf (former location of unit ventilator prior to HVAC renovation). The drains were plugged, however the contractor removed the plugs and filled the drains with concrete to provide a more permanent seal.
The Office of the Environment requested that the cove base not be re-adhered to the kickplate and a hole be drilled so the under-portions of the casework could be easily assessed in the future.
The casework was re-assessed on October 12, 2023. An odor was still present when assessing the inspection hole noted above.
A potential source of the odor described may have been an improper seal between the drain plug and pipe. The odor may occur intermittently depending on the pressure differentials between the pipe and the occupied space.
A board-approved restoration contractor removed the plugs and filled the drain pipes with concrete and then installed plugs overtop of the concrete.