Indoor Air Quality (IAQ) Assessments

NES has extensive experience investigating “sick building syndrome” (SBS) and “building-related illness” (BRI) complaints, as well as providing a wide variety of proactive indoor air quality (IAQ) investigation and resolution services. Our IAQ investigative methods utilize  standards and protocols developed by professional organizations, such as the American Society of Heating, Refrigerating and Air-conditioning Engineers, Inc. (ASHRAE), American Conference of Governmental Industrial Hygienists (ACGIH), US Environmental Protection Agency (EPA), US Occupational Safety and Health Administration (OSHA), and the National Institute of Occupational Safety and Health (NIOSH).

NES can provide rapid turnaround, building diagnostic evaluations, and complaint driven investigations to evaluate the overall indoor air quality within a building and identify potential IAQ problems within commercial buildings, hospitals, schools, industrial facilities and apartment buildings. NES has performed numerous evaluations of IAQ concerns associated with building material emissions, building ventilation systems, production process emissions and industrial facilities, mold and bacteria contamination, chemical and pesticide application, and indoor lead-based paint (LBP) and asbestos-containing materials (ACM’s). NES has extensive experience in assisting building management with employee informational forums to discuss employee concerns and present survey findings.

IAQ Investigation Services:

  • IAQ Investigation Services
  • Building Diagnostic Evaluations.
  • Mechanical systems examination.
  • Employee Interviews and Interview Questionnaires.
  • Direct reading measurements of indoor air parameters (CO2, CO, Temperature, Relative Humidity, etc.).
  • Contaminant Sampling and Evaluations.
  • VOCs, SVOCs, Aldehydes, Dust Particles, Pesticides, Process Emissions, surface contaminant deposition, molds, allergens, endotoxins, etc.
  • Heating, Ventilation, and Air Conditioning (HVAC) Systems Evaluations.
  • Inspection of HVAC condition and maintenance, provisions for make-up air, effectiveness of the air distribution system, and evaluation of the potential for contaminant infiltration.
  • Cooling tower operations.
  • Bio-aerosol contamination evaluation.