Did you know that poor indoor air quality (IAQ) can impact learning performance, increase absenteeism, and even cause chronic discomfort among building occupants? That’s exactly what a well- known university nursing school discovered after a recent renovation project — and how Sahay Scientific Services (SSS) helped them turn things around.
The Challenge
Shortly after a major build-out and expansion of the nursing school’s teaching wing, staff and students began reporting headaches, throat irritation, and general discomfort during class sessions. The building was brand new, energy-efficient, and had a state-of-the-art HVAC system — yet something was off.
A detailed review revealed that a prior water intrusion incident during construction had been professionally restored and contained. The restoration appeared by-the-book: mold remediation was done, surfaces were cleaned, and air handling units were inspected. However, despite these efforts,
occupant complaints persisted, prompting the university to call in the experts at Sahay Scientific Services.
The Investigation
SSS approached the issue with both science and sensitivity. Our IAQ specialists began with a thorough inspection using spore traps, volatile organic compound (VOC) sampling, and mycotoxin analysis. While mold growth was minimal and non-threatening, something unexpected emerged — elevated levels of mycotoxins in the air.
The twist? These weren’t solely from active mold growth. Instead, the high readings were traced back to the antimicrobial agents used during the initial mold treatment process. Though intended to suppress microbial activity, using antimicrobial treatments in a building can trigger an increase in mycotoxin and endotoxin levels, primarily when not performed correctly. This happens through a stress response in the microbes and the release of toxins from dead organisms. Mycotoxins are poisonous byproducts of certain molds and fungi. When antimicrobial chemicals stress mold, it can increase its production of these toxins as a defensive mechanism.
The Solution
SSS developed a multi-phase remediation plan focusing on air exchange optimization, HEPA Vac treatments, material detoxification, and HVAC recalibration. The approach included:
- Increasing outside air intake and upgrading filtration to HEPA-MERV 13 standards.
- HEPA Vac treatment to all soft and hard surfaces
- Applying a non-toxic, neutralizing treatment to offset residual mycotoxins.
- Installing real-time IAQ monitoring sensors to track VOCs, humidity, and particulate matter.
- Conducting occupant interviews to correlate symptoms with environmental conditions.
The Results
Within weeks, occupant complaints dropped dramatically. Air sampling confirmed that mycotoxin levels returned to below detectable limits, and comfort ratings among staff and students rose significantly. The nursing school now proudly uses SSS’s IAQ report as part of their environmental health and safety orientation — a testament to proactive air quality management.
Takeaway
Even in the most modern facilities, unseen IAQ factors can undermine comfort and performance. The Sahay Scientific Services team demonstrated that science-based diagnostics and holistic solutions can uncover hidden sources of discomfort and restore truly healthy indoor environments — especially where health and learning intersect.
