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' • Level D should be worn when no respiratory and dermal hazards are present While <br /> eye protection is still required, Level D protection should be worn only as a work <br /> uniform since it does not provide any protection against chemical hazards <br /> ' 2.0 LEVEL B PROTECTION <br /> PRC personnel will perform initial assessments in Level D protection but may need to <br /> upgrade to Level C or Level B based on the results of continuous air monitoring Level B protective <br /> equipment may include the following <br /> • Positive-pressure, full-facepiece, self-contained breathing apparatus (SCBA) or <br /> ' positive-pressure supplied air respirator with escape SCBA (NIOSH-approved), <br /> • Hooded chemical-resistant clothing (overalls and long-sleeved jacket, coveralls, one or <br /> two-piece chemical splash suit, or disposable chemical-resistant overalls), <br /> ' • Coveralls, <br /> • Gloves, outer, chemical-resistant, <br /> ' • Gloves, inner, chemical-resistant, <br /> • Boots, outer, chemical-resistant with steel toes and steel shanks, <br /> r • Boot-covers, outer, chemical-resistant (disposable), <br /> • Hard hat (under suit), and <br /> ' • Face shield <br /> ' Level B protection will be worn when <br /> ' • The type and atmospheric concentration of substances have been identified and require <br /> a high level of respiratory protection, but less skin protection, <br /> ' • The atmosphere contains Iess than 19 5 percent oxygen, <br /> • If the organic vapor concentrations are greater than 5 ppm above background, but less <br /> ' than or equal to 200 ppm or the situation may be IDLH, or <br /> • The presence of incompletely identified vapors is indicated by a direct-reading organic <br /> vapor analyzer, but vapors are not suspected of containing high levels of chemicals <br /> ' harmful to (OVA) skin or capable of being absorbed through the skin <br /> E - 3 <br />