Concern: Thunder Hill Elementary School: November 12th, 2021 (CXTHES2021000202)

Date of IEQ Report Form
Date of Report
Black/Grey mold surrounding walls and frame of walk-in refrigerator/freezer in the kitchen as well as water pooling along the door and walls.
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:  November 12, 2021

Discoloration (grime, mold) and fading was noted around the perimeter of the walk-in door, on the door, and base.  In addition, the back wall of the kitchen's restroom had mold growth.  The kitchen restroom shares a wall with the walk-in.  The ceramic floor was damp around the front of the walk-in.

Thermal differentials between the air and surfaces result in condensate that over time can result in mold growth.

Corrective Actions
November 12th, 2021

The Office of Environment suggested Food Services review the operation of the walk-in and Building Services to possibly insulate the restroom wall.

November 15th, 2021

Food Services cleaned/disinfected all impacted surfaces to remove all discoloration.  Food Services submitted a work order for Building Services to caulk the base of the walk-in.

Tracking Number