Concern: Glenelg High School: July 18th, 2019 (CXXGHS20190000F6)

Location
Room 145
Date of IEQ Report Form
Date of Report
September 12th, 2019
Concern
Relative humidity mold growth was identified during a Tier II IEQ Walkthrough.
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)
Findings

Date(s) of Assessment: July 16, 25, and August 19, 2019

July 16, 2019

Relative humidity mold was identified on a wooden podium, a wooden shelf, and on the bottoms of chairs in Room 145.

The remainder of the HVAC zone (HRU-3) and the adjoining HVAC zone (HRU-2) were checked and minor mold growth was noted in Rooms 131, 139, 141, 143, and 144.

The Dedicated Outside Air Unit for HRU-3 was not operating.

A data logger was placed in Room 145 to monitor the temperature and relative humidity.

July 25, 2019

Building Services (HVAC) had indicated the supply air temperature for the HVAC zone was too high due to a deficiency with the chiller. Building Services (HVAC) reported that the deficiency had been corrected.

The Office of the Environment visited the site and reviewed the data logger information. Relative humidity within the space was acceptable (in the 50's). The mold growth observed prior had not impacted any additional materials nor had it become any denser.

Corrective Actions
July 25th, 2019

Custodial Services cleaned/disinfected mold impacted materials. The Office of the Environment inspected the work on August 19, 2019. The Office of the Environment noted a few minor areas that were still impacted. These materials were cleaned upon discovery. 

Closed
Yes
Tracking Number
CXXGHS20190000F6