![](_themes/tabs/tabbul2.gif) | Overview: Conducting an IAQ Investigation
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![](_themes/tabs/tabbul2.gif) | Initial Walkthrough
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![](_themes/tabs/tabbul2.gif) | Collecting Additional Information
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![](_themes/tabs/tabbul2.gif) | Collecting Information About Occupant Complaints
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![](_themes/tabs/tabbul2.gif) | Using the Occupant Data
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![](_themes/tabs/tabbul2.gif) | Collecting Information about the HVAC System
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![](_themes/tabs/tabbul2.gif) | Using the HVAC System Data
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![](_themes/tabs/tabbul2.gif) | Collecting Information about Pollutant Pathways and Driving Forces
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![](_themes/tabs/tabbul2.gif) | Using Pollutant Pathway Data
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![](_themes/tabs/tabbul2.gif) | Collecting Information on Pollutant Sources
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![](_themes/tabs/tabbul2.gif) | Using Pollutant Source Data
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![](_themes/tabs/tabbul2.gif) | Sampling Air for Contaminants and Indicators
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![](_themes/tabs/tabbul2.gif) | Complaints Due to Conditions Other Than Poor Air Quality
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![](_themes/tabs/tabbul2.gif) | Forming and Testing Hypotheses |