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663 HAZWOPER for General Site Workers IV
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Classifying the Hazards

Classification for health and physical hazards includes the determination of the degree of hazard, where appropriate, by comparing the data with the criteria for health and physical hazards. Classification is a three-step process:

  1. Identify the relevant data regarding the hazards of a chemical.
  2. Review the data to ascertain the hazards associated with the chemical.
  3. Decide whether the chemical will be classified as hazardous per the definition of hazardous chemical.

For each chemical, the chemical manufacturer or importer must determine the hazard classes, and where appropriate, the category of each class that apply to the chemical being classified.

Chemical manufacturers, importers and employers classifying chemicals must identify and consider the full range of available scientific literature and other evidence concerning the potential hazards.

Employers are not required to classify chemicals if they choose to rely on the classification performed by the chemical manufacturer or importer for the chemical to satisfy this requirement.

Knowledge Check Choose the best answer for the question.

1-7. Under what conditions are employers not required to classify chemicals?