Concern: Howard High School: August 24th, 2018 (CXHOHS2018000011)

Date of IEQ Report Form
Date of Report
The teacher is reporting a significant amount of black mold growing on the cinder block wall between the two windows.
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)

The suspect mold had been cleaned prior to the Office of the Environment's original assessment.

Mold growing between posters/exterior walls can occur, particularly in the summer as the interior/exterior temperature differential can cause condensation.

No mold growth or odors were observed on other surfaces such as desks, chairs, etc.

The exterior of the room was assessed. Two former outdoor air intakes for unit ventilators (since removed) were observed.

Casework was present along the exterior wall. The casework was removed from the wall to assess the backside. Mold growth was identified on the backside of the casework.

Corrective Actions
October 19th, 2016

The mold growth behind the casework was cleaned/disinfected.

December 4th, 2018

The former outdoor air intake locations will be re-sealed with a different material. Building Maintenance will then re-inspect the casework (likely during spring break) to determine if the issue has been corrected.

Date Closed
Tracking Number