Concern: Ilchester Elementary School: November 18th, 2018 (CXXIES2018000090)

Poratble 184
Date of IEQ Report Form
Date of Report
Building Services reported minor areas of mold growth on drywall during a floor replacement project.

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 November 18, 2018. The concern should be dated October 2, 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)

Date(s) of Assessment:  October 2, 2018.

The base of the drywall exhibited minor (~ 6 square inches) mold growth on four separate areas.

The cause was due to the original construction along with the beginning of material breakdown on the exterior of the portable.  The base of the exterior siding consists of 2" x 4"  trim that warps around the portable.  The caulk sealing the trim and exterior siding is breaking down.  In addition, the edges of the trim are porous.  As a result, moisture is being retained by the trim and wicking into the wood base plate of the wall and absorbing into the drywall.

The wood floor substrate in the vicinity of the impacted drywall was wet and stained.

Corrective Actions
October 6th, 2018

Building Services rendered the services of a contractor to remove and repair damaged drywall and wood studding. 

The wood sub-floor was disinfected, dried, and then encapsulated with a primer, prior to installing new flooring.

The exterior trim was removed and reconstructed to prevent water from entering at the base and impacting interior components.

Date Closed
Tracking Number