Online Course

NELC 420 - Environmental Health I

Module 2: Exposure Assessment and Control

Strategies and Interventions

Hierarchy of Controls
The idea behind this hierarchy is that the control methods at the top of the graphic are potentially more effective and protective than those at the bottom. Following this hierarchy normally leads to the implementation of inherently safer systems, where the risk of illness or injury has been substantially reduced (CDC, 2015).




Public Health Emergency Preparedness and Response (CDC) Chemical Agents List A-Z

This website presents a list of chemical agents organized by alphabetically order presenting facts of each agent, descriptions of the chemicals, emergency response information from CDC related to specific chemical agents, toxic syndrome descriptions, and emergency response cards containing decontamination, disposal, use of personal protective equipment, and sampling information. (CDC 2018)

NIOSH Workplace Safety & Health Topics: a list of Safety and Prevention topics

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