Concern: Howard High School: September 18th, 2018 (CXHOHS2018000048)

Date of IEQ Report Form
Date of Report
Wet ceiling tiles (some near ventilation vents) are repeatedly being replaced and there was the presence of a black liquid during the replacement of a coil in the ceiling. The drop ceiling also contains rust.
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:  November 21, 2018

Currently three dry, brown water stained ceiling tiles are present.

A note reading "roof" was present at the staining indicating Building Services or custodial staff is aware and evaluating the likely cause of the moisture intrusion.  However, the roofer was present at the school and recalled all had been taken care of and has not heard or received a recent work order regarding any issues in this area.

The roof deck consists of tectum and is covered with fiberglass panels.  The paper like layer of the fiberglass shows dry water staining above where the stained ceiling tiles are located.

No mold growth was observed in relation to the impacted areas.

The black substance was not readily visible and assumed to be residual from roofing repairs (i.e. asphalt) or stained water from sitting within the coil (common).

Corrective Actions
November 21st, 2018

The school administration is to have custodial staff replace stained ceiling tile and monitor for recurring water stains.  If new water stains are discovered, the school is to submit a work order to Building Services to re-evaluate the source, correct, and replace ceiling tile.

Date Closed
Tracking Number