Concern: Marriotts Ridge High School: September 10th, 2019 (CXMRHS201900010C)

Room 226
Date of IEQ Report Form
Date of Report
Temperature and humidity concerns. Also, every morning when I first open the door, there is a moldy or musty smell that kind of just hits you immediately when you walk in. Health symptoms were reported.
IEQ Investigation Process

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 13, 2019

The individual reported that Building Services (HVAC) worked on the rooms Fan Coil Unit (FCU) on September 12, 2019. The individual reported that conditions have improved since.

The temperature (74.0 degrees F) and relative humidity was acceptable (64.1%) per the American Society of Heating, Refrigeration and Air-Conditioning Engineers (ASHRAE). 

A mild carpet odor was present during the assessment.

No elevated moisture was detected in the carpet.

No elevated moisture was detected in the rooms casework.

No mold growth was observed.

Areas above the drop ceiling were inspected. No concerns were identified.

The rooms FCU was inspected. No concerns were identified with the unit.

Carbon dioxide readings were elevated within the space. The Dedicated Outside Air Unit (DOAU) serving the room was not operational during the assessment. This also would make the carpet odor detected more noticeable. 

Carpet odors are considered a nuisance, not a health and safety concern.

No concerns were identified with the filters and coils associated with the DOAS unit. The drain pan was beginning to rust and will eventually begin to leak.

Corrective Actions
October 3rd, 2019

A work order was created for Building Services to replace the drain pan within the DOAU.

Date Closed
Tracking Number