Asbestos removal continues;
changes made in procedures
By Julie Freeman
Of the Emerald
A preliminary removal and
washdown of asbestos on the
south side of the Science I
building was completed this
weekend after several modifica
tions were made in removal pro
cedures. said Harold Babcock,
Physical Plant director.
The $107,702 project, which
began on Sept. 17 and entails
the removal of the asbestos from
the north and south sides of the
building, was scheduled to be
completed in 21 days. However,
delays due to weather, inherent
problems with the building and
unrealistic standards set in the
contract with CBB Construction
Co. have made a completion
date hard to predict, said Frank
Crowell, project supervisor.
“Right now the project is get
ting to the level it should have
been at from the beginning,”
said Crowell. “We knew a few
days after the project began that
some of the original standards
would have to be changed.” he
said, adding that the modifica
tions have been quick and easy.
The two major modifications
made last week were the raising
of the asbestos level within the
contained work area from-0.5 to
3.0 fibers per cubic centimeters
of air, and the discontinuation
of the water-stripping method
of removing the asbestos from
the steel beams coated with the
substance.
“Though we are well within
any government standards (for
airborne asbestos) outside the
cocoon, we found that the 0.5
requirement inside the contain
ment area was unreasonable,”
Babcock said.
“We bent over backwards to
meet the concerns of everyone
involved, but we bent a little bit
too far for the contractor to do
the job,” he said.
Babcock said that the relaxed
standards pose no added risk
because the cocoon covering the
south side of Science I is
secured in such a way that any
problem seems remote.
Two machines, which are in
side the plastic cocoon, create
negative pressure within the
work area so that if anything
should happen to the protective
covering the contaminated air
would not escape into the
environment.
A special process allows the
asbestos-contained air to be
sucked out of the cocoon
through filters, which remove
asbestos particles and blow
clean air outside the building.
The water-stripping method
used to remove asbestos also
had to be modified because
water, was entering the building
through cracks that were not
seen until the • asbestos was
removed.
According to Babcock, the
asbestos, coating and the wire,
mesh to which it is attached
will now be removed together
in large pieces.
The beams must still be wash
ed down with water, but the
amount of water used now is
minimal compared to the
amount used in the water
stripping process. Although
seeping through the undetect
able cracks may still occur, each
section of the building that is
being washed down will be
evacuated to allow time to clean
up any room where water does
intrude.
“As long as the asbestos is
wet there is no problem, but if it
dries it can become airborne,”
Babcock said.
He added that the project will
probably incur some further
costs to take care of the cracks
and leaks found in the building
and to deal with other problems
as they arise.
Crowell said work on the
north side of the building
should start by the end of next
week, but stressed that they can
only go one step at a time.
“The project is behind
schedule but the new modifica
tions should pick up some of
the time lost. It is hard to
predict when it will be finished
but I don’t think we are talking
about months here,” Babcock
said.
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