Concern: Dayton Oaks Elementary School: December 20th, 2018 (CXDOES201800009D)

A87, A90, B02, C07, C08, C09, and D02
Date of IEQ Report Form
Date of Report
December 21st, 2018
An individual expressed potential concerns regarding indoor air quality as result of a recent water leak impacting (various degrees) classrooms.

Note: The Office of the Environment has recently transitioned to a new Online IEQ platform (as of August 2018). The new platform does not allow the back-dating of IEQ concerns. This concern is inappropriately dated December 20, 2018. The concern should be dated November 26, 2018.
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)

Dates of Assessment:  November 26, 27, 29, and December 3, 2018.

A mechanical leak occurred on the second floor above the drop ceiling and impacted rooms on the second and first floor in various degrees (door entrance to entire room).

Components that were impacted and required drying included carpeting and limited wood (bottoms of casework covered by vinyl cove base).  Items such as ceiling tile and ventilation duct insulation were discarded and replaced.

Assessment was performed using a moisture probe (provides audible indicator for moisture content) and pulling back impacted items.

Some moisture was identified under carpet where there were poor seam construction.

Areas were dried via extraction, fans, dehumidifiers (due to moist weather at the time of incident), drilling holes in wood base, and pulling back carpet and vinyl cove base.

The areas were assessed until all areas were deemed dry.

The above process is best practice to prevent mold growth due to the incident.

Corrective Actions
December 3rd, 2018

The source of the incident was corrected.

Carpets were correctly re-adhered where seams failed.

The carpet in room D02 will be replaced in the near future due to a warranty issue with color fading.  The water incident had no bearing on coloring.  However, by responding to the incident Building Services Flooring Shop recognized the color deficiency and contacted the carpet representative.

Tracking Number