CEMP-E/CECW-E
EI 01D010
1 September 1997
Hooded or nonhooded chemical-resistant or
hazardous waste site, using levels of protection A, B,
dust-resistant clothing (overalls; two-
C, and D+ at various project stages. A column is
piece chemical splash suit; disposable
also included which reflects normal productivity for
chemical resistant and/or dust-resistant
comparison. Paid time per day is 8 hours (480
overalls).
minutes). Nonproductive time is that time required
Coveralls (optional).
for standard losses, scheduled heat stress breaks, and
Gloves, outer, chemical-resistant.
dexterity losses due to personal protection, and is
Gloves, inner, chemical-resistant.
developed based on job-site conditions. Standard
Boots/shoes, chemical-resistant, steel toe and
losses account for all time losses independent of
shank.
temperature variations. They include safety
Boots, outer, chemical-resistant (disposable)
meetings, instructions, donning/doffing personal
(optional).
protective equipment (PPE), decontamination,
Safety glasses or chemical splash goggles.
switching air supply/filters, monitoring delays, and
Hard hat (optional).
cleanup. Scheduled heat stress breaks account for all
Escape mask (optional).
paid rest periods per day. Dexterity losses account
Face shield (optional).
for a slowdown of normal work due to factors such
as discomfort, clumsiness, weight, and restricted
(5) Level D: Level D is a work uniform
breathing and communication as a result of wearing
affording minimal protection, used for nuisance
PPE. Productive time is obtained by subtracting
contamination only. Level D protection is used
nonproductive time from paid time. Productivity is
when the atmosphere contains no known hazard; and
then calculated as a percentage ratio of productive
work functions preclude splashes, immersion, or the
time for each level of protection divided by
potential for unexpected inhalation of or contact with
productive time for normal work (430 minutes). The
hazardous levels of any chemicals. The following
430 minutes is based on a total paid time of 480
constitute Level D equipment:
minutes minus a 50 minute delay on a (normal)
clean site. The 50 minute delay is composed of 10
Coveralls.
minutes safety meetings and instruction plus 10
Gloves (optional).
minutes for clean up plus 30 minutes for breaks.
Boots/shoes, chemical-resistant, steel toe and
This percentage is applied to a normal production
rate (190 m3/ hr) to arrive at a reduced production
shank.
Boots, outer, chemical-resistant (disposable)
rate for each level of protection.
(optional).
Safety glasses or chemical splash goggles.
f. Once the reduced crew production rate has
Hard hat (optional).
been developed, the cost engineer must decide
Escape mask (optional).
whether or not to add additional crews to reduce the
Face shield (optional).
excavation time. If reduced excavation time reduces
the total project time, overhead cost will be lower.
d. Ideally, HTRW site chemical hazards should
This may result in lower total cost than would occur
be controlled through engineering controls or work
if additional crews were not added. Each remedial
practices to the extent that most, if not all, routine
action task requiring personal protective equipment
work in the exclusion zone can be performed in
requires a productivity evaluation.
Level D where possible. The use of Level D
Modified and other levels of protection place a
g. A USACE report, entitled "Productivity
significant heat burden on the worker under
Study" for HTRW remedial action, contains
relatively moderate ambient temperature (70 degree
additional detailed productivity considerations for an
F) conditions, and otherwise significantly impact
HTRW cost estimate. This report is available in all
worker productivity and comfort.
MSC and District Cost Engineering Offices.
Estimating assumptions used in the productivity
e. Productivity example. Example 6-1,
calculations for a particular HTRW remedial action
Production, illustrates how HTRW productivity
project will be documented with notes. Table 6-1
could be presented in an estimate. The example
and table 6-2 indicate the standard losses,
reflects excavation of contaminated soil at a
scheduled/heat stress breaks and dexterity losses as a
6-3
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