... and EM82 5-1 -1 06.E.07, “Respiratory 55461_C 015. fm Page 139 Tuesday, June 5, 2007 11:00 AM© 2008 by Taylor & Francis Group, LLC 142 CORPORATE ENVIRONMENTAL MANAGEMENT • Steel-toed boots• ... 67):• Full-face air purifying respirator (APR) with NIOSH-approved combi-nation high-efficiency particulate air/organic vapor cartridges• Work clothing, as prescribed by weather• Steel-toed boots• ... of accidental injury, toimpair self-rescue, or to materially reduce work efficiency, providedthat the daily TLV-TWA is not exceeded. An STEL is defined as a 1 5- minute TWA exposure that should not...