Responding to Indoor Mold Concerns: A Resource for Environmental Public Health Professionals
Appendix E: Safety Considerations for Indoor Assessments
CONSIDERATION DESCRIPTION Respiratory protection Use a National Institute of Occupational Safety and Health (NIOSH)-approved N95 respirator when required and in accordance with respiratory protection program requirements, including annual medical evaluation, fit testing, and training. Protective equipment and clothing Wear appropriate personal protective equipment (PPE), including long pants, long-sleeved shirts, liquid-resistant dry suits or chemical protective garments, safety boots or shoes, hard hats or helmets, eye protection such as goggles, and any additional PPE as required.
Heat stress
Learn the symptoms, risk factors, first aid, and prevention of heat-related illness. Allow time to acclimatize, work with a buddy, stay hydrated, and take regular rest and hydration breaks. Obtain medical screening for health conditions that increase heat-related risk. Ensure compliance with applicable Occupational Safety and Health Administration (OSHA) confined space standards. Do not enter a confined space until a trained and authorized entry supervisor or designated competent person has verified that the space is safe for entry. A confined space is large enough to enter, has limited or restricted entry or exit, and is not designed for continuous occupancy, such as a home's crawl space. Identify CO hazards from the use of alternative fuel or power sources. Obtain appropriate training, recognize signs and symptoms of exposure, and consider using personal CO monitors. Be aware of potential electrical hazards and obtain proper training. Keep clear of electrical damaged systems and components. Ensure utilities are de-energized after flooding, turn off power at the main source, and never touch or operate water-damaged electrical equipment. Remain aware of potential safety hazards caused by structural damage at facilities where assessments are conducted.
Confined spaces
Carbon monoxide (CO) Electrical hazards
Structural damage and integrity
Note . Appendix E safety considerations and descriptions were informed by: National Institute for Occupational Safety and Health. (2025). Hurricane and flood key messages for employers, workers, and volunteers (3rd ed., Publication No. 2025-106). Centers for Disease Control and Prevention. https://www.cdc.gov/niosh/docs/2025-106/pdfs/2025-106.pdf?id=10.26616/NIOSHPUB2025106
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