Concern: Lime Kiln Middle School: March 29th, 2021 (CXLKMS20210001B2)

Gym, Cafeteria, Fitness Room, and Lower Level Stairway
Date of IEQ Report Form
Date of Report
An HVAC component (hot water) broke over the weekend causing water to leak into the gymnasium.
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)

Duration of Project and/or Assessments:  March 29 - April 19, 2021

The Office of Environment's involvement included assessing impacted areas and materials and to ensure proper drying or removal of impacted materials.  This concluded April 19, 2021.  The gym floor replacement is to move forward after April 19 and is under the direction of Building Maintenance.

The cause of the incident is the hot water connection (below gym ceiling) to the gymnasium's roof top ventilation unit (RTU) became disconnected.  The RTU is mounted on a flexible RTU curb.  The thought was the high winds the night before shifted the structure to loosen the pipe connection.  It can be assumed this has been happening over time to a point of failure.

The water had direct impact within the gymnasium and its wood floor system.  Some indirect water damage occurred in the stairway (ceiling tile, block wall in stairwell and under lockers, removable entrance walk-off carpet squares, and a drywall bulkhead) located outside the art room.  The hot water condensed on the metal roof deck causing water stained ceiling tiles (cafeteria and surrounding hallways) and wet spotting on drywall bulkheads and ceilings (foyer outside gym and cafeteria, student restrooms, and hallway entrance to related arts wing).  Condensate formed under the fitness room's rubber floor tiles.  Several gym wall padded mats (inner material; mats located behind basketball backboards) were dampened.

A Board approved restoration company was utilized to dry and/or remove/repair drywall materials, remove/replace damaged ceiling tiles (all of cafeteria and foyer outside gym and cafeteria were replaced), remove gym floor, dry out area above drop ceiling, and dry cement block and entrance walk-off carpet squares.  The use of moisture meters and infrared thermal imaging along with visual appearance were used in the evaluation.

The response actions above are intended to prevent microbial growth.

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