Concern: Oakland Mills High School: September 27th, 2023 (CXOMHS20230002C4)

Location
504
Date of IEQ Report Form
Date of Report
Concern
There has been a damp smell in the room combined with the room being extremely humid.
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)
Findings

Date(s) of Assessment: September 30, 2023

The temperature (69.7 degrees F), the relative humidity (65.3%), and carbon dioxide (487 parts per million (ppm) was acceptable for a weekend visit with Heating Ventilation and Air Conditioning (HVAC) off. 

No moldy/musty odors were identified upon entering the space. The room's odor was comparable to other HCPSS rooms of this use.

No odors were identified emanating from the supply diffusers, the adjoining office, or cabinetry. 

No odors were identified in the adjoining bathroom. A floor drain (common odor concern) was not present.

An ultra violet light was used to assess for historic leaks/stains. No anomalies were identified. 

Various surfaces were assessed for visible mold growth that would occur from an extended period of elevated humidity. No visible mold growth was observed. 

The aquarium was assessed. Mineral deposits were observed on the filter housing and rim, however these deposits are normal and occur due to evaporation. The filter was dirty. A slight odor was detected in the vicinity of the dirty filter.

The drier vent in the adjoining Family and Consumer Science (FACS) classroom was connected.

The floor drain trap in the adjoining FACS classroom was properly charged with water.

The ventilation unit associated with the space was assessed:

  • No odors were identified within the unit.
  • The outside air dampers were open.
  • The filters were acceptable and recently changed (pre-filters dated 6/23 and final filters dated 9/23).
  • The coils and drain pan were acceptable.
  • The rubberized sheathing around copper lines in the last compartment of the unit require cleaning.
Corrective Actions
October 31st, 2023

Clean rubber insulation around copper lines in roof top unit.

November 1st, 2023

Staff are to be reminded that regular cleaning and maintenance of aquariums (filter changing, cleaning, water changes) are to occur.

Closed
No
Tracking Number
CXOMHS20230002C4