Document 15gVRDOMdgYvrr9OzjqJ7L5Qa
FILE NAME Kelly Moore KM
DATE 1976 Mar 18
DOC KM028
DOCUMENT DESCRIPTION Letter from Liberty Mutual to KM with Attached Asbestos Survey Report
2755 S. Locust Street Suite 215 Denver Colorado 80222 Tel 303 758-2282 March 18 1976
Mr. Luis Garcia Plant Superintendent
Kally - Moore Paint Company 3600 East 45th Avenue
Denver CO 80216
RE Asbestos Survey Report
Dear Mr. Garcia
asbestos survey report conducted January 15 1976
is your copy of the
that this department will probably shut down
Enclosed Per our conversation you indicated
Should a change be made in this decision
all operations effective April 1 1976.
and should receive immediate attention
the four recommendations remain applicable
Sincerely yours
Wesley M. Goodson
Sr. Loss Prevention Represents
HC
William ce
E. Moora President
Ted
Gessner
Secretary
- Production
Robert Miller Vice President
KM 01127
PLAINTIFF'S EXHIBIT
----"--,
LIBERTY MUTUAL INSURANCE COMPANY
COMPANY LIBERTY LIFE ASSURANCEASSURANCE COMPANY OF BOSTO LIBERTY MUTUAL FIRE INSURANCE
HOME HOME OFFICES BOSTON
EQUAL OPPORTUNITY EMPLOYERS
ASBESTOS SURVEY
MOORE INC
DENVER COLORADO
MAR 22 22 1976
Date of Survey January 15 1976
Date of Report March 10 1976
Report Prepared by
Bill Lutts Asst Southwest Div
Industrial Hygienist
KM BB 5641
ae
MOORE INC
DENVER COLORADO
DRY WALL MIXING AREA
Date of Survey January 15 1976
Date of Report March 10 1976
Material Sampled Airborne Asbestos Fibers
*
Analysis Method Contrast Micorscope
Recommended Engineering Control Limit 2 fibers greater than 5 microns in - length
Location
1 Middle of workroom Breathing zone height Pump fixed on center support
column 40 minutes sampling during
batch mix .
2 Second sample under same conditions as # above
3. Personal sample 40 minutes sampling
time during mixing cycle operator's breathing zone
4 Same conditions as # above
;
Fibers
5 3
1
2
-6-
KM BB 5646
ASBESTOS SURVEY
KELLY INC
DENVER COLORADO
INTRODUCTION
made A survey was
for airborne asbestos fibers in the dry wall products mixing area
at Moore Inc. , Denver Colorado on January 15 1976. The purpose of the
was to measure the presence and quantity of airborne asbestos fibers greater survey
than five microns in length The shorter fibers are not considereads an asbestos
hazard but rather as a category of free silica exposure The recommended engineering
control limit for asbestos fibers at presenits 2 fibers per milliliter per cubic
centimeter of workroom air for a normal work day and work week exposure A total
of four samples was taken with two pumps One pump was mounted on the one man
working in the dry wall area and the other pump was mounted on the center column
of the room and measured the overall asbestos content of the air away from the
ribbon mixers The samples were taken open face at a rate of 2 liters per minute
for 40 minutes and a blank submitted with the exposed filters as a control
CONCLUSIONS
The two samples taken on the mixing operator indicates that his exposure is less
than or equal to the recommended engineering control limit during a mixing cycle
ventilation This result is not surprising since the
system on the ribbon mixers
where the bags are opened and emptied is doing an excellent job In light of the
relatively low exposure of the operator the general room air results are surprisingly
high
KM BB 5642
An analysis of the sample taken in the center of the room at breathing zone
height indicates greater than the
that the number of asbestos fibers in
recommended engineering control limit
the workroom air is
of 2 fibers per milliliter
milliliter Readings of 5 fibers per
and three fibers per milliliter were obtained
on each of the two 40 minute sampling runs Measurements of the general room air
flow were also made during the sample period and indicated that air was flowing in
area from the paint mixing
and out through the door which leads to the warehouse
storage
for the
area Given the operator's low exposure the only reasonable explanation in results is that the dust collector system beside the door
difference
which leads to the main paint mixing area is leaking or emitting fibers in some
way and the general room air flow is then carrying them through the very region
where we took the general room air sample The low results obtained on the
operator who is the only man exposed in the room indicates that the local
exhaust ventilation system is performing properly at the source of contaminant
that our results give a true picture of the situation the Therefore assuming
collector end of the exhaust ventilation system should be carefully checked for places where asbestos fibers might be escaping into the general room air
RECOMMENDATIONS| 76-1 A collection barrel is located beneath the dumping chute of
the main dust collector bin There is several inches of clearance
between
barrel
the It
bottom opening of this bin and the top of would be advisable to connect the bin and
the the
collection
barrel with
a plastic sleeve which would prevent the release of asbestos fibers
when into the room air
the collection bin is dumped into the collection
barrel In addition this would reduce the possibility that a leak in
the bottom bin opening or the residual fibers in the barrel itself
is a source of room contamination
KM BB 5643
76-2 Care should be taken to make sure that asbestos bags are not included in the compactor presently in use One bag had inadvertently
been placed in the compactor at the time of our visit The operator
demonstrated the normal disposal procedures and indicated that this
particular bag had been placed there in
Given the proximity of the compactor to
the general room sample it is possible
error by another employee the center post where we took that this single asbestos bag
contributed significantly to the total fiber levels detected
76-3 The duct work of the dust collection system should be carefully
checked to make sure that there are no leaks emitting asbestos fibers
and dust into the work room air A visual inspection at the time of
our visit did not reveal any leaks But this is one possible explanation of the high detected levels which should be investigated
76-4
in this area should
Operators
protective equipment until such time
continue to wear their personal
as the effectiveness of the
respirators presently
engineering controls are fully verified The
in use
approved for asbestos fibers and pneumoconiosis producing
are
dusts
THE SURVEY The four samples sampling pumps
taken were collected in
A flow rate of 2 liters
the per
standard manner using two personal
minute was used A sampling period
of 40 minutes per sample was used The samples were taken with the cassettes
open and pointed downward to prevent unwanted trash from settling on them
-4-
KM BB 5644
af
on of One pump was mounted directly
the operator of the ribbon mixer and a total
two
samples was taken with this pump The other personal sampling pump was mounted in
the center of the room at breathing zone height and two samples were takeonn this
pump also More than two samples per pump might have been taken except that the mixing operations for that days workload had come to an end with the conclusion of
the second set of samples
Industrial The collected samples were then submitted to our
Hygiene Laboratory at
Hopkinton Massachusetts They were analyzed there by means of a contrast
microscope A visual counting method was used to determine the number of fibers
greater than 5 microns in length collected during the sampling period This
total sample volume collected and the total number of fibers present allowed the determination of fibers per milliliter to be determined
A recommended engineering control limit of 2 fibers per milliliter is suggested in this report
Bill Lutts Asst Southwest Division
Industrial Hygienist
KM BB 5645
KM BB 5647
KELLY MOORE San Carlos California
ASBESTOS SURVEY
On June 30 1975 a visit was made to this plant to evaluacotnetrotlhse aasndbestos
following installation of additional engineering
Mike
exposure of the amount of asbeus set d ao los ng some of the lines
reduction
Mutual's Senior Loss Prevention Representative accompanied
Love Liberty
the writer
CONCLUSIONS
of 1. All employees working in the Paco Division this plant
not considered exposed excessive asbestos in air
are concentrations
This is based on the current health based on the
standard However if our judgment was
health standard effective July 1 1976 the dry texture
filler would be considered exposed to an excessive amount
of asbestos air concentrations
2 The exhaust ventilation on the dry texture bagging machine is ineffective
RECOMMENDATIONS
so 1 The local exhaust ventilation on thethdarty dutsetxtucraen bbeagegfifnegc-
machine be redesigned tively captured and removed
of the dry texture bagging machine should be
2 The operatwoirth coveralls as much of this dust is infiltrat-
for
provided
ing his street clothes
This increases his chance ~ members of
taking asbestos fibers home and exposting other
his family
texture mixer dry texture mixer and ready
3 The ceiling
dust masks that have been
mixer should wear the approptrhieayteare dumping bags of asbestos
provided for them wheneverventilation has been provided at
Even though local exhaust
minute the
these dumping stations 150 linear feet per
and dust
actual dumping of asbestos does create turbulence
which oftens billows into the operator's face before being
exhausted
KM BB 5648
DISCUSSION
as This survey is the third that has been completed cfoonrtraoslbsestthoast we Ir te is a
evaluation to measure some of the engineering
exhaust ventilation designed around the ceiling
instituted
such
the reduction of
asbestos primarily along
the
ceiling
texture
bager and
which
has
dropped
from
approximately
150
pounds
of
asbestos
texture line
per batch to 15 pounds of asbestos per batch
Survey Method Air samples were collected on metmhbermanveia fpieltresrosnal0.s8ampl-
micron porosity with air being pulled through
two liters per minute
Air samples were
ing pumps at approximately
zone filter cassettes attached
collected in both the employees breathing
to
operator's
shirt
lapel
and
pump
attached
to
their
belt
and
air
samples
air
collected in various areas of the plant to determine background
were
concentrations
All samples were analyzed at our Hopkinton Massachusetts
method
laboratory via the phase contrast microscope
- As
are probably now well aware asbestos is a health
Toxicity
you
a lung disease called asbestosis
hazard which when inhaled may cause
In addition it may
This takes 10 to 20 years to develop after exposurereferred to as meso-
also cause cancer of the chest or abdominal lining
thelioma This may be fatal within one year after the first symptom
Standards ~ The current health standard for exposure to airborne
Health asbestos fibers is five fibers per milliliter of air
This is an eight
milliliter of
hour time weighted value which will drop to two fibers per
1976. Health standards are guidelines below which most
air
July 1
would
not
be
expected
to
experience
any
biological
discomfort
weoxrkiesrsting conditions or individual susceptibility may be exceptions
to this
- Our data indicates that most of
Paco Textures Manufacturing Department
working within the Paco texture area are exposed to one
the employees
The exception to this is the dry
fiber per milliliter of air or less
texture filler operator Our data indicated
that
all
the air samples milliliter of air
taken in his breathing zone indicated three fibers per
This
similar to those taken back inMarch 1973
These readings are very
asbestos is acceptable only until July 1
current air concentration of
to
1976 however from a standpoint of health and exposing an employee
unnecessary asbestos fibers in the air this level is unacceptable
high this level is so
is the exhaust ventilation for the
The reason that
is ineffective The exhaust ventilation duct
' dry texture bagging machine
The duct is so
is directly behind the bagging slot and machine supports
of dis-
back that it's completely ineffective just from a standpoint
far
of the parts to the machine It
tance let alone being obstructed by some
be designed and
is suggested that this local exhaust ventilation system
KM BB 5649
DATA
RESULTS OF Asbestos in air
DATE OF SURVEY June 30 1975
SURVEY METHOD Membrane filter
METHOD OF ANALYSIS Phase contrast microscope
HEALTH STANDARD
,
Eight Hour Time Weighted Weighted
.
Fibers per Milliliter of Air
;
S Current
-
Effective July 1 1976
2
-5-
KM
SAMPLE #
1
2
' 4 5 6 7 8
;
LOCATION
Operator's Breathing Zone OBZ ceiling
texture mixer
OBZ ceiling texture filler
;
OBZ dry texture mixer
OBZ dry texture filler
OBZ ceiling texture mixer
OBZ ceiling texture filler
OBZ dry texture mixer OBZ dry texture filler
TIME OF DAY 8:00
8:00 8:15 8:15 9:30 9:30 9:30 9:30
SAMPLING
TIME MINUTES
53.5
44.5 52.0 50.5 45.0 47.0 50.5 50.5
AIR
VOLUME
LITERS 107
89 104 101
90 94 101 101
RESULTS ASBESTOS
FIBERS
1
*
0.7
3 2
*
0.9
3
BB
5650