Document rBZje9KBakabwGX216395Xdn7
Table 1: Results of employee breathing-zone sampling for 1,1,2 Tn'chloroethane in the Solvents/EOC 1 Plant, DowCh mica), Plaquemine, Louisiana, during 1991.
Sample Number 10749 10750 10751 10752 10753 10754 10755 10756 10757 10758 10759 10760 10761 10762 10763 10764 10765 10766 10767 10768
Job | Classification
Contract MW Contract MW
C6 Contract Laborer
SC6 C6 06 SC6 C6 C8 06 AREA AREA 06 Contract MW Contract MW Contract MW Contract MW Contract MW C6
Date |
14-Mar 14-Mar 14-Mar 14-Mar 15-Mar 19-Mar 19-Mar 19-Mar 19-Mar 19-Mar 19-Mar 19-Mar 19-Mar 19- Mar 25-Mar 25-Mar 26-Mar 27-Mar 27-Mar 29-Mar
Sample Flow rate
T otal
Duration [ (ml/mfn) | Volume (L)
44
1970
86.7
44
1970
86.7
164 969
159
164 986
162
38
1010
38.4
23 2010 46.2
8
2010
16.1
77 1001 77.1
80 993 79.4
19 995 18.9
80 197 15.8
80 1995 160
80 2000
160
35 2000 70.0
10 2020 20.2
10 2020 20.2
23 2000 46.0
14 2030 28.4
14
1995
27.9
17 1990 33.8
Lab Cone, (vrtr)
Result (mg) | PPM (a,b)
Task
0.006
ND(0.01) Replacing P-52a
0.006
ND(Q.01) Replacing P-52a
0.006
N D(0.01) Charging Per filters (not clearing)
0.006
N D(0.01) Charging Per filters (not clearing)
0.006
ND(0.03) Clearing C-2/60 teed fillers
0.006
ND(0.02) Drain P-510b, suction bleed plugged
0.006
N D(0.07) Pull P-510b
0.006
ND(0.01) Clearing/cleaning T et filters
0.006
ND(0.01) Clearing/cleaning Tet filters
0.006
N D(0.06) Ciearing/cieaning T et filters (pump quit)
0.006
ND(0.07) Clearing/cleaning Tet filters
0.006
ND(0.01) Clearing/cleaning T et filters, east end
0.006
0.01 Clearing/cleaning T et filters, west end
0.006
<0.02 Draining P-22Qa, suction bleed plugged
0.006
N D(0.05) Pull P-IOd to inspect
0.006
N D(0.05) Pull P-IOd to inspect
0.006
ND(0.02) Change out P-5d
0.006
N D(0.04) Change out P-60b
0.006
N D(0.04) Change out P-60b
0.006
<0.03 Clearing C-5b reflux line, 90 leaking
Intfestrial Hygiene Exposure Guidelines
OSHA 8-hour PEL OSHA 15 min STEL ACGIH 8-hourTLV ACGIH 15-mil ST EL DOW 8-hour IHG
10 (SKIN) hE
10 (SKIN) It NE
(a) N D= None detected at the Analytical Detection limit noted in parenthesis. (b) <= Detectable amount but below the limit of quantitation for the given sampling conditions.
| Respirator FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG
FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG
DO 0 1 5 9 5 3
CONFTDFNTTAL.
Report #91.01
TITLE:
Evaluation of employees' exposure to carbon tetrachloride, chlorine, ethyl chloride, ethylene dichloride, pechloroethylene, propylene dichloride, 1,1,2-trichloroethane, noise, and associated Industrial Hygiene Activities including an area wipe survey for hexachlorobenzene and area noise survey at the Louisiana Division Solvents / EDC 1 Plant, Plaquemine, Louisiana, during 1991.
Summary
Distribution List:
L. Adcock G. Kusch A. Royals G. Meier,
2304 2304 3502W 3502W
T. Perrilleaux 1601
T. Gunn,
1701
S. White,
1701
R. Hotard, 1701
S. Drombrowski, Midland
RESTRICTED FOR USE WITHIN THE DOW CHEMICAL COMPANY
DO 015954 CONFIDENTIAL
PURPOSE
In a continuing effort to provide a safe and healthful work environment for the personnel of the Solvents / EDC 1 Plant, a program to evaluate employees' exposure to asbestos, carbon tetrachloride, chlorine, ethyl chloride, ethylene dichloride, propylene dichloride, pechloroethylene, 1,1,2-trichloroethane, noise, and associated Industrial Hygiene Activities, including an area wipe survey for hexachlorobenzene and an area noise survey, was conducted in 1991. The following report addresses the work performed including recommendations for 1992.
EVALUATION CRITERIA
Industrial Hygiene monitoring is performed to determine actual and potential exposure levels both as daily time-weighted averages (TWA) and peak or short-term excursion exposures. The results of personal monitoring are compared with recommended exposure guidelines determined by Dow or independent agencies to be the most appropriate guidelines for a healthy work environment. The guidelines used are at least as stringent, and in many cases are more stringent, than the Occupational Safety and Health Administration (OSHA) Permissible Exposure Levels (PEL'S). The guidelines are developed using toxicology, epidemiology, and industry experience. They represent airborne concentrations of substances to which nearly all employees may be repeatedly exposed throughout a working lifetime without adverse effects. The exposure guidelines for the chemical and physical agents monitored in 1991 at the Solvents / EDC 1 Plant are outlined below.
EXPOSURE GUIDELINES
Chemical Agent
T.I.M.E.5
Physical Agent
Noise4 Asbestos (Al) Carbon Tetrachloride Chlorine Ethyl Chloride Ethylene Dichloride Hexachlorobenzene Perchloroethylen e Propylene Dichloride 1,1,2 Trichloroethane
TWA7
85 dB(A) 0.2 Fib/cc
2 ppm 0.5 ppm 1000 ppm 1 ppm
25 ppm 75 ppm 10 ppm
Excursion2
90 dB (A), C 1 Fib/cc
--
1 ppm
2 ppm
--
110 ppm 110 ppm
Source5
Dow/OSHA OSHA OSHA OSHA OSHA OSHA
OSHA OSHA OSHA
Dow Reeistrv Number
DR-8000-1032 DR-0027-0713 DR-0002-3654 DR-0006-7834 DR-0002-3701 DR-0001-8531 DR-0002-5310 DR-0002-3698 DR-0001-9943 DR-0002-3687
1. 2. 3.
4. 5.
A1 A2-
TWA-8-hour time weighted average Exposure Guideline.
Excursion - Short-term Exposure Guidelines.
Source -
Dow Industrial Hygiene Guidelines (IHG).
ACGIH - Threshold Limit Valve (TLV).
OSHA - Permissible Exposure Limit (PEL).
Supplier - Guideline recommended by the manufacturer.
See Noise section (C - ceiling level which should not be exceeded at any time).
T.I.M.E. - Dow internal hazard data system in which informational sheets are obtained covering
Toxicology, Industrial Hygiene, Medical and Environmental elements.
Known Human Carcinogen.
Suspected Human Carcinogen.
RESTRICTED FOR USE WITHIN THE DOW CHEMICAL COMPANY
DO 015955 CONFIDENTIAL
The current Dow exposure guideline for noise is a 90 dB(A) ceiling. In addition, the Hearing Conservation Amendment document (29CFR 1910.95) issued by the OSHA stated that the 8-hour TWA noise exposures should not exceed 90 decibels as measured on the A-scale [dB(A)] of a sound pressure level meter at the slow response setting. Dow Louisiana Division expresses the guidelines as an 8-hour TWA of 85 DB(A). A TWA exposure of 85 dB(A) or more requires participation in a hearing conservation program. Areas that exceed the 90 dB(A) ceiling are posted with signs and mandatory hearing protection is required. For simplification, a 100% dose is the maximum allowable dose for the workday regardless if it is in an 8 or 12-hour shift.
TOXICOLOGICAL INFORMATION
Toxicological data on the chemical and physical agents monitored at the Solvents / EDC 1 Plant in 1991 are available on the T.I.M.E. system.
SAMPLING AND ANALYTICAL METHODS
NOISE
Personal noise dose measurements were taken using DUPONT MK2 audio dosimeters, Serial numbers 014597 and 010130, set at 80 dB(A) threshold, 90 dB(A) criterion, and a 5 dB(A) doubling rate. Area sound level measurements were taken with a BRUEL & KJAER Precision Sound Level Meter, Type 2232, Serial number 1419606, Instruments were calibrated before and after each survey with a BRUEL & KJAER Sound Level Calibrator, Serial number 1472063.
AIRBORNE CHEMICALS
ASBESTOS
Employees breathing-zone sampling for asbestos during task related activities were taken using Gilian high flow pumps serial numbers 101709 and 101789 calibrated at a flow rate between 2.2 liters per minute. An open faced Neuclepore 0.8 micron size 25 mm mixed cellulose filter cassette was used. Personnel involved in asbestos remova wore North 7700 half-face respirators equipped with high efficiency filters during the job. Analysis was performed by West-Paine, an outside laboratory, using NIOSH 7400A method.
CARBON TETRACHLORIDE
Employee breathing-zone samples of potential exposure to carbon tetrachloride were collected using SKC 600mg (400mg/200mg) charcoal tubes (lot no. 120) and SKC Model 224-PCXR7 high flow personal sampling pumps (S/N 516119, 516135,516638,516647,516676). Sampling rates were set at approximately 2 liters per minute over sampling periods of 8 to 800 minutes. The pumps were checked for calibration before and after each survey using a SKC Bubble Meter (S/N ///////). Analysis was performed by J. Chustz, Environmental Services La using gas chromatography and reported under reference numbers 1232 and 1233.
CHLORINE Employee breathing-zone samples for chlorine vapors were collected using a Wolcott chlorine electrochemical sensor with a Metrosonics microprocessor datalogger. The sensor was calibrated at several concentrations before a
RESTRICTED FOR USE WITHIN THE DOW CHEMICAL COMPANY
DO Ol, CONFIDENTIAL
after sampling using a Metronics Dynacalibrator with certified chlorine permeation tubes. The datalogger provides histogram of potential chlorine exposure in 30 second averages.
E1VXL.CMLQRWE
Samples to measure concentrations of ethyl chloride were collected using SKC 600mg (400mg/200mg) charcoal tubes (tot no. 120) and SKC Model 224-PCXR7 high flow personal sampling pumps (S/N 516119,516135, 516638.516647.516676) . Sampling rates were set at approximately 2 liters per minute over sampling periods of 8 to 800 minutes. The pumps were checked for calibration before and after each survey using a SKC Bubble Meter (S/N ///////). Analysis was performed by L. Almo, Environmental Services Lab using gas chromatography and reported under reference numbers 1232 and 1233.
ETHYLENE DJCHLORIDE
Samples to measure concentrations of ethylene dichloride were collected using SKC 600mg (400mg/200mg) charcoal tubes (lot no. 120) and SKC Model 224-PCXR7 high flow personal sampling pumps (S/N 516119, 516135.516638.516647.516676) . Sampling rates were set at approximately 2 liters per minute over sampling periods of 8 to 800 minutes. The pumps were checked for calibration before and after each survey using a SKC Bubble Meter (S/N ///////). Analysis was performed by J. Chustz, Environmental Services Lab using gas chromatography and reported under reference numbers 1232 and 1233.
HEXACHLOROBENZENE
Ethylene Glycol N-Butyl Ether vapors were collected on a 1 gram charcoal tube by drawing air with a Gilian Model HFS 513A sampling pump at a flow rate of approximately 2 liters/min. for 3 minutes. The pump was calibrated with a magnehelic flow meter, serial no. 12-193174-01. Analysis was done using carbon disulfide extraction and injected into a gas chromatograph (FID).
PERCHLOROETHYLENE
Samples to measure concentrations of perchloroethylene were collected using SKC 600mg (400mg/200mg) charcoal tubes (lot no. 120) and SKC Model 224-PCXR7 high flow personal sampling pumps (S/N 516119, 516135,516638,516647, 516676). Sampling rates were set at approximately 2 liters per minute over sampling periods of 8 to 800 minutes. The pumps were checked for calibration before and after each survey using a SKC Bubble Meter (S/N ///////). Analysis was performed by J. Chustz, Environmental Services Lab using gas chromatography and reported under reference numbers 1232 and 1233.
PROPYLENE DICHLORIDE
Samples to measure concentrations of propylene dichloride were collected using SKC 600mg (400mg/200mg) char
tubes (lot no. 120) and SKC Model 224-PCXR7 high flow personal sampling pumps (S/N 516119,516135,
516638.516647.516676)
. Sampling rates were set at approximately 2 liters per minute over sampling periods
of 8 to 800 minutes. The pumps were checked for calibration before and after each survey using a SKC Bubble
Meter (S/N ///////). Analysis was performed by J. Chustz, Environmental Services Lab using gas chromatography
and reported under reference numbers 1232 and 1233.
RESTRICTED FOR USE WITHIN THE DOW CHEMICAL COMPANY
U.2 TRICHLOROETHANE Samples to measure concentrations of 1,1,2 trichloroethane were collected using SKC 600mg (400mg/200mg) charcoal tubes (lot no. 120) and SKC Model 224-PCXR7 high flow personal sampling pumps (S/N 516119, 516135,516638,516647,516676). Sampling rates were set at approximately 2 liters per minute over sampling periods of 8 to 800 minutes. The pumps were checked for calibration before and after each survey using a SKC Bubble Meter (S/N ///////). Analysis was performed by J, Chustz, Environmental Services Lab using gas chromatography and reported under reference numbers 1232 and 1233. VENTILATION Laboratory hoods were assessed using smoke tubes and an Almar model 8525 Thermo Anemometer air velocity meter to determine capture performance and hood face velocities.
RESTRICTED FOR USE WITHIN THE DOW CHEMICAL COMPANY
DO 015958 CONFIDENTIAl
Solvents / EDC 1 Industrial Hygiene Report
DO 0 1 5 9 5 9
CO NFIDENTIAL
Table 1: Results of employee breathing-zone sampling for 1,1,2 Trichloroethane in the Solvents/EDC 1 Plant, Dow Chemical, Plaquemine, Louisiana, during 1991.
Sample
Job
Sample Flowrate Total
Lab Cone, (v/V
Number! Classification | Date | Duration| (ml/min) | Volume (L)| Result (mg) PPM (a)
Task
10749 Contract MW 14-Mar 44
1970
86.68 Non Detected
Replacing P-52a
10750 Contract MW 14-Mar 44
1970
86.68 Non Detected
Replacing P-52a
10751 OS 14-Mar 164 969 158.92 Non Detected
Charging Per filters (not clearing)
10752 Contract Laborer 14-Mar 164 986 161.70 Non Detected
Charging Per filters (not clearing)
10753
SOS
15-Mar 38
1010
38.38 Non Detected
Clearing C-2/60 feed filters
10754
OS
19-Mar 23
2010
46.23 Non Detected
Drain P-510b, suction bleed plugged
10755
OS
19-Mar
8
2010
16.08 Non Detected
Pull P-510b
10756
SOS
19-Mar 77
1001
77.08 Non Detected
Clearing/cleaning Tet filters
10757 OS 19-Mar 80 993 79.44 Non Detected
Clearing/cieaning Tet filters
10758 OS 19-Mar 19 995 18.91 Non Detected
Clearing/cleaning Tet filters (pump quit)
10759 OS 19-Mar 80 197 15.76 Non Detected
Clearing/cleaning Tet filters
10760
AREA
19-Mar 80
1995
159.60 Non Detected
Clearing/cleaning Tet filters, east end
10761
AREA
19-Mar 80
2000
160.00
0.006
0.01 Clearing/cleaning Tet filters, west end
10762
OS
19-Mar 35
2000
70.00
0.006
<0.02 Draining P-220a, suction bleed plugged
10763 Contract MW 25-Mar 10
2020
20.20 Non Detected
Pull P-IOd to inspect
10764 Contract MW 25-Mar 10
2020
20.20 Non Detected
Pull P-IOd to inspect
10765 Contract MW 26-Mar 23
2000
46.00 Non Detected
Change out P-5d
10766 Contract MW 27-Mar 14
2030
28.42 Non Detected
Change out P-60b
10767 Contract MW 27-Mar 14
1995
27.93 Non Detected
Change out P-60b
10768
OS
29-Mar 17
1990
33.83
0.006
<0.03 Clearing C-5b reflux line, 90 leaking
| Respirator FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG
FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG
EXPOSURE LIMIT
OSHA PEL 10 (SKIN)
OSHA STEL
NE
ACGIH TLV 10 (SKIN)
ACGIH STEL NE
DOW IHG
NE
Table 1
Solvents / EDC 1 Industrial Hygiene Report
DO 0 1 5 9 6 ,0 CO NFIDENTIAL
Table 2: Results of employee breathing-zone sampling for Carbon Tetrachloride in the Solvents / EOC 1 Plant, Dow Chemical, Plaquemine, Louisiana, during 1991.
Sample
Job
Sample Flow rate Total
Lab Cone, (v/v]
Number Classification Date | Duration| (ml/min) ] Volume (L)| Result (mg) | PPM (a)
Task
10749 Contract MW 14-Mar 44
1970
86.68
0.207
0.38 Replacing P-52a
10750 Contract MW 14-Mar 44
1970
86.68
1.264
2.32 Replacing P-52a
10751
OS
14-Mar 164 969 158.92
0.046
0.05 Charging Per filters (not clearing)
10752 Contract Laborer 14-Mar 164 986 161.70
0.056
0.06 Charging Per filters (not clearing)
10753
SOS
15-Mar 38
1010
38.38
11.793
48.85 Clearing C-2/60 feed filters
10754
OS
19-Mar 23
2010
46.23
0.186
0.64 Drain P-510b, suction bleed plugged
10755
OS
19-Mar
8
2010
16.08
1.623
16.05 Pull P-510b
10756
SOS
19-Mar 77
1001
77.08
18.994
39.17 Clearing/cleaning Tet filters
10757
OS
19-Mar 80
993 79.44
19.971
39.96 Clearing/cleaning Tet filters
10758
OS
19-Mar 19 995 18.91
1.111
9.34 Clearing/cleaning Tet filters (pump quit)
10759
OS
19-Mar 80 197 15.76
7.374
74.38 Clearing/cleaning Tet filters
10760
AREA
19-Mar 80
1995
159.60
2.653
2.64 Clearing/cleaning Tet filters, east end
10761
AREA
19-Mar 80
2000
160.00
2.280
2.27 Clearing/cleaning Tet filters, west end
10762
OS
19-Mar 35
2000
70.00
0.007
<0.02 Draining P-220a, suction bleed plugged
10763 Contract MW 25-Mar 10
2020
20.20
0.007
<0.06 Pull P-IOd to inspect
10764 Contract MW 25-Mar 10
2020
20.20
0.007
<0.06 Pull P-IOd to inspect
10765 Contract MW 26-Mar 23
2000
46.00
0.333
1.15 Change out P-5d
10766 Contract MW 27-Mar 14
2030
28.42
0.046
0.26 Change out P-60b
10767 Contract MW 27-Mar 14
1995
27.93
0.048
0.27 Change out P-60b
10768
OS
29-Mar 17
1990
33.83
2.259
10.62 Clearing C-5b reflux line, 90 leaking
| Respirator FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG
FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG
EXPOSURE LIMIT
OSHA PEL
2
OSHA STEL NE
ACGIH TLV 5 A2 (SKIN)
ACGIH STEL NE
DOW IHG
NE
Table 2
Solvents / EDC 1 industrial Hygiene Report
DO 0 1 5 9 6 1 CO NFIDENTIAL
Table 3: Results of employee breathing-zone sampling for Ethylene Dichloride in the Solvents / EDC 1 Plant, Dow Chemical, Plaquemine, Louisiana, during 1991.
Sample
Job
Sample Flow rate Total
Lab Cone, (v/v]
Number Classification | Date | Duration | (ml/min) | Volume (L)| Result (mg) | PPM (a)
Task
10749 Contract MW 14-Mar 44
1970
86.68
0.006
<0.02 Replacing P-52a
10750 Contract MW 14-Mar 44
1970
86.68
0.006
<0.02 Replacing P-52a
10751
OS
14-Mar 164 969 158.92
0.006
<0.01 Charging Per filters (not clearing)
10752 Contract Laborer 14-Mar 164 986 161.70
0.006
0.01 Charging Per filters (not clearing)
10753
SOS
15-Mar 38
1010
38.38
0.476
3.06 Clearing C-2/60 feed filters
10754
OS
19-Mar 23
2010
46.23
0.006
<0.03 Drain P-510b, suction bleed plugged
10755
OS
19-Mar
8
2010
16.08 Non Detected
Pull P-510b
10756
SOS
19-Mar 77
1001
77.08
0.014
0.04 Clearing/cleaning Tet filters
10757
OS
19-Mar 80 993 79.44
0.018
0.06 Clearing/cleaning Tet filters
10758
OS
19-Mar 19 995 18.91
0.006
<0.08 Clearing/cleaning Tet filters (pump quit)
10759
OS
19-Mar 80 197 15.76
0.006
<0.09 Clearing/cleaning Tet fitters
10760
AREA
19-Mar 80
1995
159.60
0.030
0.05 Clearing/cleaning Tet filters, east end
10761
AREA
19-Mar 80
2000
160.00
0.029
0.04 Clearing/cleaning Tet filters, west end
10762
OS
19-Mar 35
2000
70.00
0.006
<0.02 Draining P-220a, suction bleed plugged
10763 Contract MW 25-Mar 10
2020
20.20
0.020
0.24 Pull P-IOd to inspect
10764 Contract MW 25-Mar 10
2020
20.20
0.022
0.27 Pull P-IQd to inspect
10765 Contract MW 26-Mar 23
2000
46.00
0.006
<0.03 Change out P-5d
10766 Contract MW 27-Mar 14
2030
28.42
0.006
<0.05 Change out P-6Qb
10767 Contract MW 27-Mar 14
1995
27.93
0.006
<0.05 Change out P-60b
10768
OS
29-Mar 17
1990
33.83
0.006
<0.04 Clearing C-5b reflux line, 90 leaking
| Respirator FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG
FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG
EXPOSURE LIMIT
OSHA PEL OSHA STEL ACGIHTLV ACGIH STEL DOW IHG
1 2 10 NE NE
i
Table 3
Solvents / EDC 1 Industrial Hygiene Report
DO 0 1 5 9 6 ?
CO NFIDENTIAL
Table 4: Results of employee breathing-zone sampling for Ethyl Chloride in the Solvents / EDC 1 Plant, Dow Chemical, Plaquemine, Louisiana, during 1991.
Sample
Job
Sample Flow rate Total
Lab Cone, (v/v]
Number | Classification Date | Duration) (ml/min) | Volume (L)| Result (mg) | PPM (a)
Task
10749 Contract MW 14-Mar 44
1970
86.68
0.003
<0.01 Replacing P-52a
10750 Contract MW 14-Mar 44
1970
86.68 Non Detected
Replacing P-52a
10751
OS 14-Mar 164 969 158.92 Non Detected
Charging Per filters (not clearing)
10752 Contract Laborer 14-Mar 164
986 161.70
0.003
<0.01 Charging Per filters (not clearing)
10753
SOS
15-Mar 38
1010
38.38 Non Detected
Clearing C-2/60 feed filters
10754
OS
19-Mar 23
2010
46.23 Non Detected
Drain P-510b, suction bleed plugged
10755
OS
19-Mar
8
2010
16.08 Non Detected
Pull P-510b
10756
SOS
19-Mar 77
1001
77.08 Non Detected
Clearing/cleaning Tet filters
10757
OS
19-Mar 80 993 79.44
0.003
<0.01 Clearing/cleaning Tet filters
10758
OS
19-Mar 19
995 18.91 Non Detected
Clearing/cleaning Tet filters (pump quit)
10759
OS
19-Mar 80
197 15.76
0.003
<0.07 Clearing/cleaning Tet filters
10760
AREA
19-Mar 80
1995
159.60 Non Detected
Clearing/cleaning Tet filters, east end
10761
AREA
19-Mar 80
2000
160.00 Non Detected
Clearing/cleaning Tet filters, west end
10762
OS
19-Mar 35
2000
70.00 Non Detected
Draining P-220a, suction bleed plugged
10763 Contract MW 25-Mar 10
2020
20.20
0.003
<0.06 Pull P-IOd to inspect
10764 Contract MW 25-Mar 10
2020
20.20 Non Detected
Pull P-IOdto inspect
10765 Contract MW 26-Mar 23
2000
46.00 Non Detected
Change out P-5d
10766 Contract MW 27-Mar 14
2030
28.42 Non Detected
Change out P-60b
10767 Contract MW 27-Mar 14
1995
27.93 Non Detected
Change out P-60b
10768
OS
29-Mar 17
1990
33.83 Non Detected
Clearing C-5b reflux line, 90 leaking
| Respirator FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG
FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG
EXPOSURE LIMIT
OSHA PEL OSHA STEL ACGIHTLV ACGIH STEL DOWIHG
1000 NE 1000 NE 150
Table 4
i
Solvents / EDC 1 Industrial Hygiene Report
DO 0 1 5 9 6 3
CONFTDENTTAI
Table 5: Results of employee breathing-zone sampling for Propylene Dichloride in the Solvents / EDC 1 Plant, Dow Chemical, Plaquemine, Louisiana, during 1991,
Sample
Job
Sample Row rate Total
Lab Cone, (v/v)
Number | Classification Date | Duration | (ml/min) | Volume (L)| Result (mg) | PPM (a)
Task
10749 Contract MW 14-Mar 44
1970
86.68
0.006
<0.01 Replacing P-52a
10750 Contract MW 14-Mar 44
1970
86.68
0.006
<0.01 Replacing P-52a
10751
OS
14-Mar 164 969 158.92
0.006
<0.01 Charging Per filters (not clearing)
10752 Contract Laborer 14-Mar 164 986 161.70
0.006
<0.01 Charging Per filters (not clearing)
10753
SOS
15-Mar 38
1010
38.38
0.006
<0.03 Clearing C-2/60 feed filters
10754
OS
19-Mar 23
2010
46.23
0.006
<0.03 Drain P-510b, suction bleed plugged
10755
OS
19-Mar
8
2010
16.08 Non Detected
Pull P-510b
10756
SOS
19-Mar 77
1001
77.08
0.006
<0.02 Clearing/cleaning Tet filters
10757
OS
19-Mar 80 993 79.44
0.006
<0.02 Clearing/cleaning Tet filters
10758
OS
19-Mar 19 995 18.91
0.006
<0.07 Clearing/cleaning Tet filters (pump quit)
10759
OS
19-Mar 80 197 15.76
0.006
<0.08 Clearing/cleaning Tet filters
10760
AREA
19-Mar 80
1995
159.60
0.006
0.01 Clearing/cleaning Tet filters, east end
10761
AREA
19-Mar 80
2000
160.00
0.006
<0.01 Clearing/cleaning Tet filters, west end
10762
OS
19-Mar 35
2000
70.00
0.023
0.07 Draining P-220a, suction bleed plugged
10763 Contract MW 25-Mar 10
2020
20.20 Non Detected
Pull P-IOd to inspect
10764 Contract MW 25-Mar 10
2020
20.20
0.006
<0.06 Pull P-IOd to inspect
10765 Contract MW 26-Mar 23
2000
46.00
0.006
<0.03 Change out P-5d
10766 Contract MW 27-Mar 14
2030
28.42 Non Detected
Change out P-60b
10767 Contract MW 27-Mar 14
1995
27.93 Non Detected
Change out P-60b
10768
OS
29-Mar 17
1990
33.83
0.006
<0.04 Clearing C-5b reflux line, 90 leaking
| Respirator FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG
FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG
EXPOSURE LIMIT
OSHA PEL OSHASTEL ACGIH TLV ACGIHSTEL DOW IHG
75 110 75 110 NE
Table 5
Solvents / EDC 1 Industrial Hygiene Report
DO 0 1 5 9 6 4
C O N FID E N T 1 AL
Table 6: Results of employee breathing-zone sampling for Perchloroethylene in the Solvents / EDC 1 Plant, Dow Chemical, Plaquemirie, Louisiana, during 1991.
Sample
Job
Sample Flow rate Total
Lab Cone, (v/v]
Number) Classification Date | Duration | (ml/min) | Volume (L)| Result (mg) | PPM (a)
Task
10749 Contract MW 14-Mar 44
1970
86.68
0.355
0.60 Replacing P-52a
10750 Contract MW 14-Mar 44
1970
86.68
2.541
4.32 Replacing P-52a
10751
OS
14-Mar 164 969 158.92
0.560
0.52 Charging Per filters (not clearing)
10752 Contract Laborer 14-Mar 164 986 161.70
0.200
0.18 Charging Per filters (not clearing)
10753
SOS
15-Mar 38
1010
38.38
2.531
9.73 Clearing C-2/60 feed filters
10754
OS
19-Mar 23
2010
46.23
0.026
0.08 Drain P-510b, suction bleed plugged
10755
OS
19-Mar
8
2010
16.08
0.014
0.13 Pul! P-510b
10756
SOS
19-Mar 77
1001
77.08
0.032
0.06 Clearing/cleaning Tet filters
10757
OS
19-Mar 80 993 79.44
0.039
0.07 Clearing/cleaning Tet filters
10758
OS
19-Mar 19 995 18.91
0.016
0.12 Clearing/cieaning Tet filters (pump quit)
10759
OS
19-Mar 80
197 15.76
0.011
0.10 Clearing/cleaning Tet filters
10760
AREA
19-Mar 80
1995
159.60
0.186
0.17 Clearing/cleaning Tet filters, east end
10761
AREA
19-Mar 80
2000
160.00
0.031
0.03 Clearing/cleaning Tet filters, west end
10762
OS
19-Mar 35
2000
70.00
0.007
<0.01 Draining P-220a, suction bleed plugged
10763 Contract MW 25-Mar 10
2020
20.20
0.007
<0.05 Pull P-IOdto inspect
10764 Contract MW 25-Mar 10
2020
20.20
0.007
<0.05 Pull P-IOd to inspect
10765 Contract MW 26-Mar 23
2000
46.00
0.047
0.15 Change out P-5d
10766 Contract MW 27-Mar 14
2030
28.42
6.399
33.20 Change out P-60b
10767 Contract MW 27-Mar 14
1995
27.93
3.334
17.60 Change out P-60b
10768
OS
29-Mar 17
1990
33.83
0.007
<0.03 Clearing C-5b reflux line, 90 leaking
| Respirator FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG
FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG FF/OVAG
EXPOSURE LIMIT
OSHA PEL OSHA STEL ACG1H TLV ACGIH STEL DOW IHG
25 NE 50 200 NE
Table 6
Solvents / EDC 1 Industrial Hygiene Report
DO 0 1 5 9 6 5
CO NFIDENTIAL
Tabl 7: Monitoring results of potential employee noise exposure at the Solvents / EDC 1 plant, Dow Chemical, Plaquemine, Louisiana, during 1991.
Employee
Job
Sample Avg. Sound
Corrected
Number | Classification [ Date f Duration | LevefdBfA) [ %Dose |l2 Hour%Dose
Task
098995
OS
12-Mar 484
78 19.1
28.4
Operations Sample Job
432353
OS
12-Mar
481
79 21.6
32.3
Operations Sample Job
437483705 Contract Painter 14-Mar 427
87.9
66.4
Foreman in and out of sandblast yard
435604941 Contract PF
14-Mar 427
78.5
18
Maintenance in Per/Tet plant
437725634 Contract Carpenter 15-Mar 444
84.4
42.3
Shop work (circular saw), field work
439844492 Contract Laborer 15-Mar
444
79.8
22.4
Carpenter helper in shop and field
099295
OS
19-Mar 705
83.8
62.1
63.4
Per/Tet plant outside operations
433914
OS
19-Mar 707
83.5
59.6
60.7
Thermal Oxidizer outside operations
099295
OS
20-Mar
715
84.5 69.2
69.7
Per/Tet plant outside operations
433914
OS
20-Mar 715
79.7
35.7
35.9
Thermal Oxidizer outside operations
439844492 Contract Laborer 22-Mar 457
81.8 30.7
Carpenter helper in shop and field
098995
OS
28-Mar 667
81.1 40.6
43.8
Per/Tet plant outside operations
433899
SOS
28-Mar 667
85.8 77.1
83.2 Thermal Oxidizer outside operations
098995
OS
29-Mar 685
85.4
74.9
78.7
Per/Tet plant outside operations
433914
OS
29-Mar 685
80.9
40
42 Thermal Oxidizer outside operations
Not : Monitoring was conducted with the Dupont MK-2 AudioDosimeter, using OSHA settings of; 80 dB(A) threshold, 90 dB(A) criterion level, and a 5 dB{A) doubling rate. The monitors were calibrated before and after each survey with a Bruel & Kjaer Type 4230 sound level calibrator.
Hearing protection was worn in all posted areas (>90 dB(A)) and for specific job requirements during monitoring.
Hearing (Protection
Muffs Muffs Earplugs Earplugs Earplugs Earplugs Earplugs Muffs Earplugs Muffs Earplugs Earplugs Muffs Earplugs Muffs
Table 7
Solvents / EDC 1 Industrial Hygiene Report
'O f-- ^
o o Q
confjob;,
Table 8: Results of employee breathing-zone sampling for Chlorine at the Solvents / EDC 1 plant, Dow Chemical, Plaquemine, Louisiana, during 1991.
Employee Number |
434037 099295 434037
Job Classification
OS OS OS
Sample Avg. CL2 30 second
| Date | Duration | Level PPM | high PPM
Task
28-Mar
30
0
0.8 Operations Sample Job - EDC plant only
29-Mar
17
4.85
12.75 Clearing C-5b reflux line, 90 leaking
30-Mar
36
0.08
12.75 Operations Sample Job
Note: Monitoring was conducted with the Wolcott electrochemical sensor.
J Respirator
FF/OVAG FF/OVAG FF/OVAG
Table 8
4
