Concern: Hanover Hills Elementary School: February 8th, 2021 (CXHHES20210001A5)

Rooms 210 and 211
Date of IEQ Report Form
Date of Report
February 19th, 2021
Building Services reported a water event due to a roof drain becoming disconnected allowing melted snow to enter the building.
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:  February 8, 10, 11, and 17, 2021.

February 8, 2021  

The Office of Environment assessed the incident and determined only rooms 210 and 211 were in need of drying.  Carpeting, base of wood casework, and books within the casework were in need of drying.  Building Services already on site repairing roof drain while custodial staff were removing items from the room and extracting the carpet.

The front kickplate and back baseboard under casework were wet.  The vinyl base was removed and holes cored into the baseboard so fans could be placed to force air into the holes to dry the back baseboard.  The carpeting did not go under casework.

Seams within the carpeting could be observed indicating a possible breach due to poor installation (not properly heat welded).  Water was observed under the carpet when peeling back the visible seams and edges along the casework.  As a result, a restoration contractor (to supply dehumidifiers) and Buildings Services flooring specialists were contacted.

Building Services indicated by pulling too many seams in the carpet to roll back and dry out would stretch out the carpet causing a re-install issue.  As a result, it was decided to remove the carpet and re-install with carpet squares when area sufficiently dries out.

Dehumidifiers were left to assist with drying out the wood framing beneath the casework.  Air movers were placed to direct air into the holes to dry under the casework.

Custodial staff were instructed to remove damaged books and open up / lay out to dry in another location.  After drying, school was to further assess if to discard or keep.

February 10, and 11, 2021

The Office of Environment and/or restoration contractor assessed the drying process.  The front kickplate of the casework was dry, but the back base support / framing was wet in areas.  The equipment was reposition as necessary to further assist drying.

February 17, 2021

The Office of Environment and/or  restoration contractor assessed the drying process.  All impacted items were dried and equipment removed.  Building Services was scheduled to install new flooring and repair vinyl base on February 23.

The response actions above are intended to prevent microbial growth.

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