Concern: Atholton High School: January 8th, 2019 (CXXAHS20190000A5)

Stage Craft Work Area (Drama)
Date of IEQ Report Form
Date of Report
Mold growth was observed on the radial arm (and associated table) while inspecting machine guarding during a Maryland Association Board of Education loss control inspection (safety/property) on January 7, 2019.
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(s) of Assessment: February 22 and 25, 2019

Mechanical prints were reviewed to determine the ventilation unit serving the stagecraft area.

Areas serviced by the same ventilation unit were inspected for mold growth associated with continuous and excessive humidity and dew points.

The mold growth was only observed within the stagecraft work shop area on various and/or random surfaces (primarily wood surfaces).

The mold growth was thought to be related to this past summer's continuous and excessive moist weather.

The return air intake was blocked by materials. 

Corrective Actions
February 25th, 2019

Work Order 105525.  Building Services reviewed the operation of the dedicated ventilation unit serving the stagecraft area.  The ventilation unit was operating as designed.

The Office of Environment and Building Services HVAC Shop will monitor and/or re-evaluate the area during the summer.

March 9th, 2019

A Board approved restoration company was hired to HEPA vacuum, clean, and disinfect impacted and non-impacted items and surfaces within the stagecraft work shop.  Work was performed March 7-9, 2019.  The Office of Environment performed a final visual inspection of the area on March 9, 2019. No visible mold growth was observed.

March 11th, 2019

School administration and staff are to ensure all ventilation related vents remain cleared of obstructions. 

If mold growth is observed in the future, it should be reported via the HCPSS IEQ Concern Form:


Date Closed
Tracking Number