Concern: Long Reach High School: April 29th, 2019 (CXLRHS20190000CD)

Location
A122
Date of IEQ Report Form
Date of Report
Concern
This room smells like mold/mildew. It is particularly bad on Mondays, days we return from break, in the mornings, and in the summer. Every time the humidity goes up in the school when the A/C is off, you can smell the mold.
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:  May 8, 20, and June 7, 2019.

An odor within the office and front office reception area was not detected during the visits (before occupancy).

The roof top ventilation unit serving the area was found to be in acceptable condition.  However, the outdoor air dampers were only slightly open and the primary layer of the sound liner is starting to peel.

No evidence of humidity or moisture concerns within the office or in its carpeting.

No signs of mold growth was observed.

A temperature and relative humidity data logger was place in A122 from May 20 to June 7, 2019.  A summer like weather pattern was experienced between May 26 to June 2.  During the period of testing, both temperature and relative humidity readings were in acceptable guidelines.

A balometer was used to measure air volume coming from the supply air diffusers in the work room, A122, and front office reception area and compared with mechanical blue prints.  The front office reception air appeared deficient while the other areas were in acceptable ranges.

Corrective Actions
May 8th, 2019

Building Services is to review the ventilation unit's outdoor air damper sequence to ensure operation and receiving minimal outdoor air (assists with the dilution of human occupancy).

Building Service is to evaluate the variable air volume boxes (i.e. dampers) where there is question as to the reduced air volume in the front office reception area.

Closed
No
Tracking Number
CXLRHS20190000CD