Diagnosing Indoor Air Quality Problems
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Initial Walk-Through
Develop Hypothesis
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Collecting Additional Information
Building Changes Since Comoplaints
Adjustment in Ventilation
Added Occupants
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Collecting Information About Occupant Complaints
DefineComplaint Area Within Building
Interviw Occupants
Timing Ptternes (When did symptoms start?)
Absenteeism Record fo 5 Years
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Colllect Information About HVAC System
Functioning Properly
Is System Adequate
Hygiene
Filtration
Ventilation
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Identify Pollutants Pathways
Doors
Windows
Stairways
Elevator Shafts
Utility Chases
Ductwork and Plenums
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Air Testing
Microbio