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Site Health and Safety Plan Page 25 <br />6.1.1.2 Level B PPE <br />Level B protection is selected and used when the type and atmospheric concentration of <br />substances have been identified and require a high level of respiratory protection, but less <br />skin protection. Moreover, Level B should be used when the atmosphere contains less than <br />19.5% oxygen; or, the presence of incompletely identified vapors or gases as indicated by <br />direct reading organic vapor detection instrument, but vapors and gases are not suspected <br />of containing high levels of chemicals harmful to skin or capable of being absorbed through <br />the skin. <br />The following constitutes the Level B PPE ensemble: <br />• Positive pressure, full face-piece SCBA, or positive pressure supplied air respirator <br />with escape SCBA (NIOSH approved) <br />• Hooded chemical resistant clothing (overalls and long-sleeved jacket; coveralls; one <br />or 2 piece chemical splash suit; disposal chemical resistant overalls) <br />• Coveralls <br />• Gloves, outer, chemical resistant <br />• Gloves, inner, chemical resistant <br />• Boots, outer, chemical resistant steel toe and shank <br />• Boot covers, outer, chemical resistant (disposable) <br />• Hardhat <br />• Face shield <br />6.1.1.3 Level C PPE <br />Level C PPE is used when the atmospheric contaminants, liquid splashes, or other direct <br />contact will not adversely affect or be absorbed through any exposed skin; the types of air <br />contaminants have been identified, concentrations measured, the requirements for an air <br />purifying respiratory have been met, and an air-purifying respirator is available that can <br />remove the contaminants. <br />The Level C PPE ensemble includes: <br />• Full-face or half-mask, air purifying respireator (NIOSH approved) <br />• Hooded chemical-resistant clothing (overalls; two-piece chemical-spash suit; <br />disposable chemical- resistant coveralls) <br />• Coveralls <br />• Gloves, outer, chemical resistant <br />• Gloves, inner, chemical resistant <br />• Boots, outer, chemical resistant steel toe and shank <br />• Boot covers, outer, chemical resistant (disposable)