Abstract
This chapter discusses the strategies for assessing inhalation exposure to chemicals at hazardous waste sites. It also focuses on personal protection equipment (PPE) upgrade level selection, commonly used methods for measuring exposures, instrument selection considerations, operating principles and limitations of common direct-reading instruments, as well as hazardous atmosphere classification. Reliable measurements of airborne contaminants are necessary. Industrial hygiene has three primary methods for quantification of airborne contaminants at hazardous waste sites: direct-reading instruments, chemical detector tubes, and traditional personal/area sampling methods. The air monitoring program varies depending on the length of the operation, the suspected or known hazards, and the potential concentrations. Selecting the proper level of PPE for each task is a critical part of the HASP, and it requires the detailed knowledge of the likely contaminants and the work to be performed. Selection of proper PPE is crucial to safe and healthful hazardous waste operations. The air-monitoring plan is developed to address PPE trigger levels, LEL, fenceline monitoring, and medical monitoring requirements using available instrumentation. The plan must include direct-reading instruments and chemical detector tubes to determine the proper PPE levels as well as when to cease operations, such as drilling, in the event potentially explosive atmospheres occur. The plan should also address the use of direct-reading instruments and chemical detector tubes for fenceline monitoring to protect the public.
Published Version
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