Document OzLxL724N1YOR82gBGrpO2egw
AR226-2381
c- 8 EXWIRONMENTAL STATUS
History
Industrial Hygiene Engineering Changes Protective Equipment Air Monitoring Blood Sampling Long-Term and Short-Term Employees New Hires
C-8 Material Balance Off-Plant Disposal In Product To River To Atmosphere Ground Level Modeling Results
ENVIRONMENTAL ALTERNATIVES
PIP Replace C -8 - C 7F 15CO2NB4 With TBSA - R fC H 2CH2S03H
fine Powder
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No Known Substitute
Two Expensive Alternatives
- Scrubbing of Vents - Conversion to Presumed Innocuous Compound
C 7F 15C02NH4
C 7F 15H + C02 + N H 3
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EID091341
8/ SI 6/27/78 6/12/79
8/13/79 9/79
11/12/79
C "8 REVIEW ' HISTORY
BEGAN USE OF C-8 IN DISPERSION POLYMERIZATION, `
FEW PRECAUTIONS'IN HANDLING,
' `:
ADVISED EMPLOYEES THAT 3M' FOUND ELEVATED ORGANIC FLUORINE LEVELS IN BLOOD OF WORKERS EXPOSED TO FLU0R1NATED 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 DUNE HAD ELEVATED ORGANIC FLUORINE LEVELS SIMILAR TO 3M WORKERS. MORE SAMPLES WOULD BE TAKEN,
PROVISIONAL AEL ESTABLISHED.
COMMUNICATION ADVISED RESULTS OF 78 BLOOD
SAMPTES. 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".
'
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8/01/80
Commnrn cation Summarized Program:
Define areas where engineering changes will reduce C-8 exposure* Authorize C O D 's .
Define areas where protective equipment will be needed*
Continue blood sampling program*
Continue to evaluate liver tests of employees with potential exposure.
3/20/81
3H advised D u Pont that C-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.
4/01/81 4/10/81 7/31/81
Communication about birth defects concern.
Communication about use of C-8 specific blood analysis* Results increased 28% average.
Communication concerning expansion of blood sampling and air sampling programs.
12/15/81
Communication about new data which puts original
3k analysis in doubt.
.
3/01/82
Communication that studies are complete which find C-8 not to b e a teratogen and no evidence of. adverse health effects. Female and^blood donation exclusion recommendations recinded.
5/17/82
Final AEL established.
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7/06/82 JHRildr 10/19/83
Communication that based on C-8 findings the blood sampling program would be reduced to only those directly exposed.
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ENGINEERING CHANGES
Equipment Seals and Gaskets Better Leak Maintenance Overall Building Ventilation Study Building Exhaust Fans Building Pressure Balance Ventilated Hopds Over Dryer Doors Increased Vent Stack Height Eliminated Dusty Jobs Major Cleanup of Area New Torus Disc Dryer
Protective Equipment Comfo Half Mask Respirators Breathing Air Respirators Latex Rubber Gloves
JWR:Idr 10/19/83
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TRENDS IN C-B IN AIR LEVELS
FEE Area (Composite Avg.)
1980 1.87
6-8 In Air Qnpb) AEL * 0.56
1981
1982
0.32
Not Calculated
1983 0,15
FEP Wet Finishing Operator 0.95 0.30
0.09
0.11
FEP - No. 1 Clean Room No. 2 Clean Room
6.80 3.11
3.54
0.19
Fine Powder Dryer Operator 1.40 0.56
0.15
0.06
Fine Powder Dryer Room (Composite Avg.)
3.00 2,47
0.37
0,23
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BID09J345 E1D091345
ffLON FINE POWDER/DISFERSTON OPERATORS >8 BLOOD SAMPLE RESULTS
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c--8 in Blood (ppm)
First ` Second
Sample
Sample
Change
o \oi
26.0
20.0
24.0
25.0
+ 1.0
11.0
8.2 -2.8
9.4 7,9 -1,5
8,2 6.5 -1.7
7,0 7.7 +0.7
6,9 `5.9 -1,0
5.6 4.2 -1,4
4.4 4,9 +0.5 4.3 5.6 +1.3
3.9 . 3.6
-0.3 .
3,6 2,7 -0.9
3.5 2.1 -1.4
2,9 2,8 -0.1
2.8 . 2.8
0.0
2.6 2 . 4 -0.2
2,5 1.8 -0.7
2.5 2,5 0.0
2.1 1,6 -0.5
1*6 ,
1.5
-0.1
1.5 1.2 -0.3
1,3 1.1 -0.2
Days Between Samples
363 364 391 364 363 364 337 334 365 401 364 362 363 357 365
391 336 349 288 384 366 362
% Fer Year
-23 +4 -24 -16 -21 +10 -16 -27 +13 +27 -8 -25 -40 -3 0 -7 -28 0
. -30 -6
-20 -15
JWR:ldr/10/19/83
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TEFLON FEP OPERATORS 0 8 blood sample results
First Sample
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 0,38
' Second Sample
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 0.36
Change - p9 -.8 -.3 -.6 -.7 .2 -.2 -.05 *2 -.16 -.11 - .03 -.08 -.03 - ,03 +.05 -.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 -17 -9 -29 -39 -10 -12 -9 -18 -7 -8 -4 -15 -6 -6 +12 -5
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SHORT SERVICE OPERATORS `C -8 BLOOD SA M P L E RESULTS
fine Powder
Last Sample ' PPM
.02 .19 *93 4*00
Days in Job 61 212 375 603
PPM Per Year ' Change +*09 +.24 +.03 . -*18
REP
*05 ,05 ,15 ,05 ,23 .66
95 124 135 165 492 266
+.15 + .10 + .38 + .09 + .24 -.24
iwwozra
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* *
HEW RIBES - TEFLON
Bate of First Sample
Bate Hired
C -8 Blood Level (ppm)
Months on Plant Before First
C -8 Blood Test
07/28/81
07/27/81
<0.007
0
10/01/81
08/03/81
0.009
2
10/07/81
04/20/81
0.007
\r
10/13/81
04/20/81
0.015
5 1/2 5 3/4
:
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. JWRtldr 10/19/83
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..
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C-8 BALANCE 1983 NO. 1 FINANCIAL FORECAST BASIS
FNE
H LBS, ----
FEP POWDER DISPERSION GRANULAR
LBS. TOTAL
% OF TOTAL
20.5
1.2
a RIVER
21.8
50
1.8* 10.4
---
.2 ATMOSPHERE
12.4*
28
.2 --
4.5 -- _ PRODUCT ' 4,7 11
,3 -- -- *
4.2
OFF-PLANT DISPOSAL __4,5
11
22,8* 11.5
8.7
.3
43.4* 100
* INCLUDED IN THESE NUMBERS IS APPROXIMATELY 1.5M LBS OF C-8 ENTERING THE HUMID HEAT TREATING OVENS WHERE IT IS THERMALLY CONVERTED TC CyFigH.
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OAS/nsw 2129W-6
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G-8 IN RIVER
1983 Forecast to River
- 21,800 lbs,
Average Ohio River Flow" ----- - 13.88 Billion lbs./Hour
Concentration
. - ,00018 ppra
C"8 Ingested with 1 Liter/Day - ,00000018 go.
8 Hour AEL Via Inhalation
- .0001 go.
' Or .18% of A! Dose
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TM *ld r 10/19/83
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WASHINGTON WORKS O '3 NNURL M E M OOMOEMT& & TtOM
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V* .
ENVIRONMENTAL ALTERNATIVES
fep -
m Replace C-8 - C715C02NHA W i t h BSA - RfCH2CH2S03H
Toxicity - Appears To Be Less Toxic Than C-8
Blood Accumulation Similar to C-8 - Not Present as C-8 Developing a Specific Test For Material in Blood
Fate In Process Converted to R^H - Presumed to be Nontoxic
.
Process Development Status Plant Test in November'
Substitution Timing First or Second Quarter 1984
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JWR:ldr 10/19/83
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BNVIRONMENTAL ALTERNATIVES (cont'd)
'
Fine Powder
Mo Known Substitute
Scrubbing of Vent Mot Economically Feasible - Dryer Pressure Balance is Critical - low Concentration in Vent (60,000 pph of air) - Foaming Limits Water Concentration - D o n 't Want to Send Scrubber Effluent to River
Less Expensive Alternative Conversion to Presumed
innocuous Compound
_
- c 7f 15c o 2n h 4
c ??15h + C02 + n h 3
- Natural Gas Heated Furnace
Inves tment
$1.2M M
Annual Operating Cost
$ .3MM
- Toxicity Tests and Blood Data Needed
JWRildr 10/19/83
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