Concern: Mount Hebron High School: August 17th, 2021 (CXMHHS20210001DA)

Portables 27, 61, and 145.
Date of IEQ Report Form
Date of Report
Mold growth observed on furniture in portables 27, 61, and 145.
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 of Assessment: August 16, 2021

The Office of Environment performed the school's annual IEQ walk through on August 16, 2021.  Mold growth was then identified in portables 27 (random furniture), 61 (stack of 5 chairs), and 145 (random furniture).

On August 18, 2021, the Office of Environment assessed the restoration contractor's work and determined acceptable.

On August 23, 2021, the contractor removed the dehumidifiers.

The cause of the mold growth was due to extended elevated relative humidity within the portable caused by improper thermostat setting(s) (i.e. fan mode set to "on" instead of "auto") and weather conditions.



Corrective Actions
August 17th, 2021

Building Services evaluated the thermostats and set as necessary.  Tamper guards were installed on thermostats where missing.

August 18th, 2021

On August 18, 2021, a Board approved restoration contractor was utilized to clean and disinfect the furniture as a precautionary measure.  The contractor deployed a dehumidifier in each portable to assist with drying out materials.  An air cleaner was in place during cleaning process. 

Date Closed
Tracking Number