Document VJbwYozQJoGL4My1142D35qMN
AR226-2000
:C-63 RV-3/&t
EStUUSNCtltSoft
E. I. DU FONT DE NEMOURS Sl COMPANY INCORPORATED W1LMINGTON, DELAWARE 19898
POI.YMER PRODUCTS DEPARTMENT
TO:
FROM:
J. C. BESPEEKA
J, W. RAINES Q^f[_
CC: J. T. SMTH J. H. TODD
H. E. SEEEMBETZ R. D. INGALLS D. P. GLEASON . t>. R. HAKKEY J. J. HEGEMBARTH
U'. vI/-^^EE?- WASH. WRS.
B. W. 'B&RRH - ER R. R. BOMCZEK - ADMIM.
October 21, 1983 '.^^^
C-8 ERVIROMMEMTAL" STATUS
Yesterday I reviewed the environmental stattig^f W8 for you. Dr. B. W. Karrh, R. R. Bcmczek, J. J. Hegenbarth and H. E. Serenbetz. Attached is a set of the charts I presented.
SuMaary
1. We have G-8 under control in the work environment.
1. Employee blood concentrations are coining down>
3. There are no known medical problems resulting from exposure to C-8.
4. C~8 discharged to the river will be drastically reduced by
substituting a telomer the FEP process. Goal
B sulfonic acid (TBSA) for C-8 in
date is the first or second quarter
1984. Appropriate toxicity tests on TBSA are under way.
It 5.
Concern was expressed about
that C-8 accumulates in the
air emissions of C-8, the blood and that the future
fact is
unknown.
was agreed that engineering analyses would
proceed expeditious ly on two alternatives (at least through
preliminary evaluation) for eliminating air emissions.
Also a toxicity review will be conducted on a class of
perfluorinated emitted to the
hydrides (RfH) which will
atmosphere as a result of
be generated the proposed
and
process changes.
6.
I will
people
follow progress informed.
on
the
studies
and keep
interested
JWR: Idr/Attachment
Better Things For Better Living... from Du Pont
EID079740
- C-8 EKVIROHMEMTAL STATUS
History
Industrial Hygiene
Engineering Changes Protective Equipment
Air Monitoring
Blood Sampling Long-Term and Short-Term Employees Mew Hires
C-8 Material Balance Off-Plant Disposal In Product To River
To Atmosphere
Ground -Level Modeling Results
EHVIROMMEMTAL ALTERNATIVES
FEP
Replace C-8 With TBSA
G7Fi5C02MH4 RfCH^CH2S03H
Fine Powder
No Known Substitute
Two Expensive Alternatives
Scrubbing of Vents
Conversion to Presumed
C-^CO^NH,
40QOC
Heat
Innocuous Compound
CyFijH + C02 + ?3
JWR:ldr/10/l9/83
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Pi
EID079741
C-8 REVIEW
'
'HISTORY BEGAN USE OP C-8 IN DISPERSION POLYMERIZATION, FEW PRECAUTIONS'IN HANDLING. ADVISED EMPLOYEES THAT 3M FOUND ELEVATED ORGANIC FLUORINE LEVELS IN BLOOD OF WORKERS EXPOSED TO FLUORINATED SURFACTANTS. WE WOULD REVIEW OUR SITUATION. ADVISED EMPLOYEES THAT THE REVIEW WAS COMPLETE WITH NO PROBLEMS FOUND. AS AN ADDITIONAL STEP FLUORINE LEVELS IN SOME EMPLOYEES WOULD BE
CHECKED. COMMUNICATION ADVISED EMPLOYEES THAT SOME OF 8
OPERATORS AND LABORATORIANS SAMPLED.IN JUNE HAD ELEVATED ORGANIC FLUORINE LEVELS SIMILAR TO 3M WORKERS. MORE SAMPLES WOULD BE TAKEN, PROVISIONAL AEL ESTABLISHED. COMMUNICATION ADVISED RESULTS OF 78 BLOOD SAMPLES. SAMPLES FROM MONOMER OPERATORS AND FLUOROPOLYMERS RESEARCH PERSONNEL WERE LOWER THAN FOR PERSONNEL IN POLYMERIZATION OPERATIONS. REVIEW OF MEDICAL RECORDS SHOWED "NO CONCLUSIVE EVIDENCE OF HEALTH PROBLEMS ASSOCIATED WITH
EXPOSURE TO C-8".
EID079742
8/0.1/80
3/20/81
4/01/81 4/10/81 7/31/81 12/15/81 3/01/82 5/17/82 7/06/82 WR:ldr 10/19/83
Cg^^icat:i.on_Sui]amari.zed Program;
Define areas where engineering changes will
reduce G-8 exposure. Authorize COD'S.
Define areas where protective equipment will
be needed. Continue blood sampling program.
Continue to evaluate liver tests of employees
with potential exposure.
3M advised Du Font that G-8 caused birth defects in the unborn when fed by stomach tube to female
rats in a laboratory experiment. As a result all
female employees with potential C-8 exposure were promptly transferred to other areas.
Communication about birth defects concern.
Cotmmmicati.on about use of C-8 specific blood
analysis.Results increased 28% average. Cogteutiication concerning expansion of blood sampling and air samp ling programs. Gommuni cat ion about new data which puts original 3M analysis in doubt.
Communication that studies are complete which find C-8 not to be a teratogeri and no evidence of adverse health effects. Female and blood donation exclusion recommendations recinded. Final AEL established.
ConinHmic.atxon that based on G-8 findings the
blood sampling program would be reduced to only
Chose directly exposed.
EID079743
EMGIMEESIZifG CHANGES
f,
Equipment Seals and Gaskets
Better Leak Maintenance Overall Building Ventilation Study Building Exhaust Fans Building Pressure Balance Ventilated Hoods Over Dryer Doors Increased Vent Stack Height Eliminated Dusty Jobs
Major Cleanup of Area
^3ew Torus Disc Dryer
Protective Equiptoent Comfo Half Mask Respirators Breathing Air Respirators Latex Rubber Gloves
JTO.:ldr
10/19/83
EID079744
TKEMDS- TO C-8 IN ATK LEVELS
PEP Area (Composite Avg.)
1980 1.87
FEP Wet Finishing Operator 0.95
TOP -
No. 1.Clean Room
No. 2 Clean Room
6.80
Fine Powder Dryer Operator 1.40
Fine Powder Dryer Room (Composite Avg.)
3.00
C-8 In Air (mpb)
AEL ^ 0.56
1981
1982
0.32
Not
Calculated
0.30
0.09
3.11
3.54
0.56 2.47
0.15 0.37
1983
0.15 0.11
0.19 0.06 0.23
JWR:ldr 10/19/83
EID079745
TEELOM'f" ST.m POWffiK/DTSPERSIOH OPEBA'H3BS G-8 BLOOD S-AMPm BESULTS
c-i? in Blood
First
Sample
Second Sample
(:CT)
,
Change
Days Between Saifflples
% Per Year
Change
26.0
20.0
-6.0
363
24.0
25.0
+1.0
364
11.0 9.4 8.2
8.2
-2.8
391
7.9
-1.5.
364
6.5
-1.7
363
7.0
7.7
+0.7
364
6.9
5.9
-1.0
337
5.6
4.2
-1.4
334
4.4
4.9
+0.5
365
4.3
5.6
+1.3
401
3.9
3.6
-0.3
364
3.6
2.7
-0.9
362
3.5
2.1
-1.4
363
2.9
2.8
-0.1
357
2.8
2.8
0.0
365
2.6
2.4
-0.2
391
2.5
1.8
-0.7
336
2.5
2.5
0.0
349
2.1
1.6
-0.5
288
1.6
1.5
"0.1
384
1.5
1.2
-0.3
366
1.3
1.1
-0.2
362
JWR:ldr/10/19/83
-23 +4
"24 -16 -21 +10 -16 -27 +13 +27
-8 -25 -40
-3
0
-7 -28
0
-30
-6
-20
-15
^
0
0 M W
-4 -A
EID079746
TS-EWW PEP OPElUUCORS
C--8 BLOOD- SAME?LE KESTJLTS
c- 8 in Bibod Cpl pm)
Pirst
Sample
Second
iagEle
Change
7.5 4.5 3.1 2.1 1.8 1.8 1.6 1.25 1.20 0.95 0.86 0.75 0.52 0.51 0.42 0.41
6.6 3.7 2.8 1.5 1.1 1.6 1.4 1,20 1.00 0.79 0.75 0.72 0.44 0.48 0.39 0.46
-.9 -.8 -.3 -.6 -.7 -.2 -.2 -.05 -.2 -.16 -.11 -.03 -.08 -.03
-.03 +.05
0.38
0.36
-.02
Days Between Samples
362 380 384 364 364 392 393 171 333 391 565 364 365 337 445 363 363
% Per Year
Change
( -12 j -17
4
-9
j -29
-39
-10 -12
-9 -18
-7 -8 -4 -15
-6 -6
+12
-5
JWR.-ldr/10/19/83
EID079747
SHORT SERVICE OPERATORS C'-8 BLOQP SAMPLE RESULTS
Fine Powder
Last
Sample
PPM
.02 .19 .93
4.00
FEP
.05 .05 .15 .05 .23 .66
Days in
Job 61
212 375
6.03
95 124 135 165 492 266
PFM Per Year
" Chafage
+.09 +.24 +.03
-.18
+.15 +.10 +.38 +.09 +.24
-.24
JWR:ldr 10/19/83
EID079748
HEW HIKES - TEFLON
Date of First
Sample
07/28/81 10/01/81 10/07/81 10/13/81
Date Hired
07/27/81 08/03/81 04/20/81 04/20/81
C-8 Blood Level (ppm)
<0.007 0.009 0.007 0.015
Months on Plant
Before First
C~8 Blood Test
2
5 1/2 5 3/4
JHR:ldr 10/19/83
EID079749
C-8 BALANCE
1983 NO. 1 FINANCIAL FORECAST BASIS
FINE
M LBS.
FEP POMDER DISPERSION GRANULAR
LBS. TOTAL
20,5
1..2
~--
1.8* 10.4
---
-2 ---
4.5
.1
RIVER
.2
ATMOSPHERE
---
PRODUCT
21.8 12.4*
4.7
_t3
22.8*
.----...
11.6
.A-2
8.7
----
OFF-PLANT DISPOSAL 4.5
.3
43.4*
% OF TOTAL
50 28 11
11
100
* INCLUDED IN THESE NUMBERS IS APPROXIMATELY 1.5M LBS OF TCH-.E8RMENALTLEYRINCGONTVHEERTEHDUMTIDO CHEyAFT^HT.REATING OVENS WHERE IT IS
JAS/nsw 2129W-6
10/11/83 EID079750
G-8 in KCVEB.
1983 Forecast to Mver
Average Ohio River Flow Concentration.
G-8 Ingested with 1 Liter/Day 8 Hour AEL Via Inhalation
21,800 Ibs.
13.88 Billion Ibs./Hour
.00018 ppm .00000018 gm. .0001 gm.
Or .18% of AEL Dose
JWR:ldr
10/19/83
EID079751
i ^s
M7/^<y<yjLW^WD W3W . 7677AW6' 9-0 S~^OM W^eN/HS
'S"h
EHVIia3HMENTAL" ALTEEITATIVES
FEP
Replace C-8 - CyFisCO^N]^ With TBSA - RfGH2CH2S03H
TosdLcity - Appears To Be Less Toxic Than C-8 Blood Aeeuiaulation
Similar1 to 0-8 - Hot Present as C-8 Developing a Specific Test For Material in Blood Fate In Process Converted to RfH - Presumed to be Montoxic Process Development Status Plant Test in November Substitution Timing
First or Second Quarter 1984
JWR:ldr 10/19/83
EID079753
EMVIROMMEMTAL ALTERNATIVES- (c-ont'-d)
Pine' Pbtoder
No Known Substitute
Scrubbing of Vent Not Economically Feasible
- Dryer Pressure Balance is Critical - Low Concentration in Vent (60,000 pph of air)
- Foaming Limits Water Concentration - Don't Want to Send Scrubber Effluent to River
Less Expensive Alternative Conversion to Presumed
Innocuous Compound
- 0^1500^4 ^g0 > C^R 4. CO., -^ m^
'- Natural Gas Heated Furnace
Investment
$1.2MM
Annual Operating Cost
$.3MH
- Toxicity Tests and Blood Data Needed
JWR-.ldr
10/19/83
EID079754
