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• • Work clothes which may consist of a cotton shirt and cotton pants, cotton <br /> coveralls, or disposable coveralls, such as Tyveko, <br /> • Steel-toe and -shank work boots, <br /> I <br /> • Safety glasses with side shields or chemical splash goggles, <br /> • A Class A hard hat that is nonmetallic and impact resistant (worn <br /> whenever overhead hazards exist), <br /> • Inner and outer nitrile gloves (only required for handling potentially <br /> contaminated items—for example, during drilling and related sampling <br /> activities, and <br /> • Hearing protection (required when noise levels exceed 85 dBA) <br /> 7.2 Level C Protection <br /> Level C protection may be used if <br /> • The atmospheric contaminants, liquid splashes, or other direct contact will not <br /> adversely affect any exposed skin, <br /> • The types of air contaminants have been identified and concentrations have <br /> been measured, <br /> • An air-purifying cartridge is available that can remove the detected <br /> contaminants (if air purifying cartridges are not available, then supplied air <br /> respiratory protection equipment would be necessary), and <br /> • All criteria for the use of air purifying respirators are met <br /> Level C provides the same level of skin protection as Level B, but a lower level of <br /> respiratory protection The Level C ensemble consists of <br /> • Full-face or half-face air purifying respirator equipped with organic <br /> vapor/high efficiency particulate air (NEPA) filter cartridges, <br /> • • Chemical–resistant clothing such as 5aranex®coated Tyvek®, <br /> • Inner and outer nitrile gloves, <br /> 7-2 <br />