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Health Hazard Evaluations (HHEs)

Each month we will update this page to highlight newly released final reports and information on new and emerging hazards we are evaluating. Check back often to see what we are up to!

What's New

  • Exposure to Synthetic Cannabinoids and during a Clandestine Lab Raid
    HHE Program investigators determined that law enforcement agents are at risk for dermal exposure and ingestion of synthetic cannabinoids and other contaminants. We found these substances in their urine and noted inconsistent PPE use and ineffective ventilation in the evidence processing and storage area. To read the full report go to
  • Evaluation of Eye Irritation and Sore Throat in Employees Processing Garlic
    Finding diallyl disulfide and other compounds that can cause eye and respiratory irritation in the garlic chopping and cooking areas, HHE Program investigators recommend improving the ventilation, limiting employee access to the cooking area, and determining cartridge change-out schedule for respirators. To read the full report go to
  • NIOSH Health Hazard Evaluation Program Lead Measurement Database
    We have released a database to provide researchers and other interested stakeholders with lead measurement results collected during health hazard evaluation (HHE) surveys from 1991–2015. The database contains workplace lead measurement results from over 70 HHE reports, including over 1,200 personal lead exposure measurements and 1,900 area lead measurements. For reports posted online, the database provides a direct link to the HHE report for each of the lead measurement results. This database is an ongoing project and will be updated annually to add the most recent HHE lead measurement data. To view the database go to