CEMP-E/CECW-E
EI 01D010
1 September 1997
specified and example calculation to show reduced
pressure supplied air respirator with escape
production rates.
SCBA.
Hooded chemical-resistant clothing (overalls
c. Levels of personal protection. Each HTRW
and long-sleeved jacket; coveralls; one- or
remedial action project will likely consist of work
two-piece chemical splash suit; disposable
tasks requiring various levels of personal protection.
chemical-resistant overalls).
29 Code of Federal Regulations (CFR) 1910.120,
Coveralls (optional).
appendix B (or 29 CFR 1926.65 appendix B) defines
Gloves, outer, chemical-resistant.
four basic levels: Level A, Level B, Level C, and
Gloves, inner, chemical-resistant.
Level D. Figure 6-2 depicts the different levels of
Boots, outer, chemical-resistant, steel toe and
protection. Each level is described below. An
shank.
additional level, Modified Level D is also described.
Boot covers, outer, chemical-resistant,
Together, the levels describe personal protective
(disposable).
equipment options used to protect on-site workers at
Hard hat (optional).
HTRW remedial action sites. The required protection
Face shield (optional).
levels for each HTRW contract is listed in the
contract specifications.
(3) Level C: Level C protection is used
when the concentrations and types of air
(1) Level A: Level A is selected when the
contaminants are known and the criteria for using
greatest level of skin, respiratory, and eye protection
air purifying respirators are met. The atmospheric
is required. Level A is the option of choice only in
contaminants, liquid splashes, or other direct contact
the most extreme exposure conditions Immediately
will not adversely affect or be absorbed through any
Dangerous to Life and Health (IDLH) and is not
exposed skin. The following constitute Level C
used at typical HTRW sites except as a last option in
equipment:
an extreme emergency. Even then, SOP' for a site
s
would typically specify evacuation in place of
Full-face or half-mask air purifying respirators.
donning Level A. The following constitute Level A
Hooded chemical-resistant clothing (overalls
equipment:
two-piece chemical splash suit; disposable
chemical-resistant overalls).
Positive pressure, full-face, self-contained
Coveralls (optional).
breathing apparatus (SCBA), or
Gloves, outer, chemical-resistant.
positive pressure supplied air respirator
Gloves, inner, chemical-resistant.
with escape SCBA.
Boots, outer, chemical-resistant, steel toe and
Totally encapsulating chemical-protective suit.
shank.
Coveralls (optional).
Boot covers, outer, chemical-resistant
Long underwear (optional).
(disposable).
Gloves, outer, chemical-resistant.
Hard hat (optional)
Gloves, inner, chemical-resistant.
Escape mask (optional).
Boots, chemical-resistant, steel toe and shank.
Face shield (optional).
Hard hat (optional).
(4) Level D Modified: Level D Modified
(2) Level B: Level B protection is used
is a modified basic work uniform affording the same
when the type and atmospheric concentration of
skin protection provided by Level C against direct
substances have been identified which require a high
contact with contaminated materials (i.e.,
level of respiratory protection, but a lesser level of
contaminated dust) and/or liquid splashes, in the
skin protection; or when the atmosphere is less than
absence of inhalation hazards of any type. Level D
19.5% oxygen or other IDLH conditions exist
Modified is not defined in 29 CFR 1910.120/29
without attendant severe skin hazards. The
CFR 1926.65, but has been defined through
following constitutes Level B equipment:
extensive reference in Site Safety and Health Plans
prepared for HTRW projects. The following
Positive pressure, full-face, self-contained
constitute Level D Modified equipment:
breathing apparatus (SCBA), or positive
6-2
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