Document MGqMKNdG5OnnndRZG1vVMzEek
AR226-2393
C-8 REDUCTION & CONTROL PROGRAMS STATUS
R. J. Z1PFEL
6-11-87
003546-19 - 06/09/87 - RJZskst
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MEETING AGENDA
AIM GROUNDRULES PLAN POLICY AND GOALS C-8 SAFETY AND HEALTH INFORMATION ENVIRONMENTAL CONTROL PROGRAMS WORK ENVIRONMENT PROGRAMS - C-8 IN BLOOD HISTORY - C-8 IN AIR HISTORY PATH FORWARD/ACTION ITEMS 9 CONCLUSIONS
003546-26 - 06/09/87 - RJZ:kst
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MEETING AIM
TO REVIEW THE FLUOROPRODUCTS
C-8 REDUCTION AND CONTROL PLAN
THROUGH OPEN DISCUSSIONS AROUND
THE HISTORY AND STATUS OF THE C-8 RELATED PROGRAMS TO ASSURE THAT
ALIGNMENT BETWEEN CORPORATE SAFETY
^
I
AND SPD BUSINESS OBJECTIVES CONTINUES.
003546-20 - 06/03/87 - RJZ:fcst
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GROUND RULES
HOLD QUESTIONS UNTIL END OF PRESENTATION EXCEPT IF MEANING IS NOT CLEAR.
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G-8 CONTROL PLAN POLICY AND GOALS
REDUCE PUBLIC EXPOSURE THROUGH THE ECONOMICAL IMPLEMENTATION OF THE OPTIMUM TECHNOLOGIES AVAILABLE
REDUCE EXPOSURE BELOW AEL BY ENGINEERING CONTROLS AND PROTECTIVE EQUIPMENT
REDUCE EXPOSURE BY ENGINEERING CONTROLS AND PROTECTIVE EQUIPMENT SO THAT ELEVATED ORGANIC FLUORINE LEVELS IN BLOOD WILL DECREASE AND ACCUMULATION OF ORGANIC FLUORIDES IN NEW WORKERS WILL BE LIMITED
003546-27 - 05/19/87 - BJZ;kst
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C-8 DATA TO DATE IT IS NOT A TERATOGEN
IT IS NOT AN EMBRYOTOXIN
IT IS NOT A MUTAGEN
IT IS MODERATELY TOXIC - LD 50 540 mg/kg
IT HAS AN ESTIMATED BIOLOGICAL HALF LIFE OF ONE TO THREE YEARS IN HUMAN BLOOD
NO KNOWN REPORTS OF HEALTH RELATED EFFECTS REPORTED BY DuPONT
- 3M HAS HAD ONE EMPLOYEE WITH REVERSIBLE LIVER DAMAGE (UPDATED JANUARY 1987) ;
003546-2 - 06/09/87 - BJZ:kst
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C-8 EXPOSURE LIMITS
AEL IN AIR
0.56 MOLES PER BILLION
Q
0.01 mg/m
BLOOD LEVELS
NONE ESTABLISHED
PUBLIC EXPOSURE LIMITS NONE ESTABLISHED
003546-21&22 - 06/09/87 - KJZskst
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C-8 HISTORY
8/51
Began use of C-8 in dispersion polymer ization. Few precautions in handling.
6/07/78
Advised personnel that 3M found elevated
organic fluorine levels in blood of workers exposed to fluorinated surfactants. Started internal review and monitoring.
9/79 Provisional AEL established by Haskell.
3/20/81
4/10/81 3/01/82 5/17/82
8/85
3M advised that C-8 caused birth defects in unborn when fed by stomach tube to female rats. All female employees with potential C-8 exposure were promptly transferred to other plant
areas.
C-8 specific blood test developed and put in use.
Studies completed which found C-8 not to be a teratogen and no adverse health
effects.
Final AEL established at 0.01 mg/m3or
0.58 ppb.
First commercial shipment of TBSA from Chambers Works.
12/86
Demonstrated feasibility in the laboratory to economically concentrate C-8 in water solutions.
003546-1 - 06/09/87 - BJZikst
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C-8 ENVIRONMENTAL CONTROL PROGRAMS STATUS VERSUS 1984
AIR
FINE POWDER DRYER VENT SCRUBBING AND RECOVERY
1984 1988-89
CURRENT 1989
WATER
REPLACE C-8 WITH TBSA 100% in 1985
-
15% in 1987 30% in 1990
ELIMINATE SUPERNATE PONDS
-
NEW ITEM
1H88
003546-32 - 06/03/87 - RJZ:kst
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WASHINGTON WORKS OFF PLANT EMISSIONS
WATER AIR PRODUCT OFF-PLANT DISPOSAL
POUNDS 08
1983
1986
21.700
19,100
12.700
16,200
8.000
8,300
7,700
8,300
^
50,100
51,900
003546-10&11 - 06/03/87 - BJZskst
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C-8 LEVELS IN DRINKING WATER
DISTANCE FROM NO. 5
OUTFALL (miles)
C-8 LEVEL - PPB 1984 1987
PARKERSBURG
7.50 UPSTREAM
ND
ND
WASH. WORKS
0.50 UPSTREAM
ND
ND
LUBECK WATER 0.25 DOWNSTREAM 1.1
1.9
DISTRICT
0.25 DOWNSTREAM 1.5
1.9
LITTLE HOCKING 3.00 DOWNSTREAM 0.6
ND
RAVENSWOOD
29.0 DOWNSTREAM
ND
ND == NOT DETECTABLE
003546-7 - 06/10/87 - RJZ:kst
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FINE POWDER DRYER C-8 EMISSIONS REDUCTION
LABORATORY STUDIES
DEMONSTRATED ABILITY TO SCRUB TO 95% EFFICIENCY
CAN CONCENTRATE TO 5% USING ION EXCHANGE
CAN CONCENTRATE TO GREATER THAN 10% USING REVERSE OSMOSIS
DEMONSTRATED SUCCESSFUL POLYMERIZATION US ING RECOVERED VIRGIN C-8 FROM ION'EXCHANGE
003546-24 - 05/19/67 - BJZikst
a
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SURFACTANT RECOVERY ACTION ITEMS
START UP TEST C-8 SCRUBBER ON FINE POWDER DRYER EXHAUST - 3Q87
DEMONSTRATE FEASABILITY TO ECONOMICALLY CONCENTRATE AND REUSE C-8 AND OTHER SURFACTANT SOLUTIONS - 4Q87
COMMERCIAL RECOVERY AND RECYCLE OF C-8 IN FINE POWDER - AUTHORIZE $3MM IN 2Q88 - STARTUP-2H89 -
APPLY ABOVE TECHNOLOGIES TO FEP IF ECONOMICAL
,iS!W!!t,
'^IN^
003546-28 - 06/09/87 - KJZskst
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TBSA REPLACEMENT IN FEP
NO PANACEA
15% CONVERTED IN 1987 - 1.2 MM LBS. FEP ADVANTAGES
- REDUCES SURFACTANT DISCHARGE TO OHIO
RIVER
LBS OF SURFACTANT TO RIVER
IN 1986
____(if 100% of type)_____
C-8
17,500
TBSA
7,400
- CAN MAKE UNIQUE HIGH HFPI/LOW MV
POLYMERS WITHOUT PENALTY g
Ut
OS
- DEMONSTRATED 20% HIGHER POLYMERIZING 00
RATES
-- $1 MM COMPANY COST SAVINGS POTENTIAL
003546-30 - 06/09/87 - BJZ:kst
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TBSA REPLACEMENT IN FEP
DISADVANTAGES
- 30 - 40% RATE PENALTY IN HUMID
HEAT TREATING - LOSS OF 1.5 - 2.0 MMAP CAPABILITY
- QUALITY PROBLEMS - COLOR AND GEL
- DISPERSION AND DRY FLAKE PRODUCTS REQUIRE FDA CLEARANCE
-- EXPECT TBSA TO ACCUMULATE IN THE BLOOD
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1 5
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<i" T(?y^ ^-^.^
003546-31 - 05/19/87 - RJZskst
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TBSA REPLACEMENT IN FEP
DISADVANTAGES
- 30 - 40% RATE PENALTY IN HUMID
HEAT TREATING - LOSS OF 1.5 - 2.0 MMAP CAPABILITY
- QUALITY PROBLEMS - COLOR AND GEL
- DISPERSION AND DRY FLAKE PRODUCTS REQUIRE FDA CLEARANCE
- EXPECT TBSA TO ACCUMULATE IN THE BLOOD
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f^ """nr-^zy^
g S
%
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c./
f*-
voo\
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'5 2.S 0 f -r ^ : ^ .
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cl^ .T^y/<( ^.^^
003546-31 - 05/19/87 - BJZ:kst
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TBSA CONVERSION ACTION ITEMS
CONTINUE WITH TRANSITION AS BUSINESS OPPORTUNITIES EXIST - FORECAST OF 30% CONVERSION BY 1990
EXPAND HUMID HEAT TREATING CAPABILITY
SEEK FDA APPROVAL OF TBSA BASED RESINS
003546-29 - 05/19/87 - BJZskst
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SUPERNATE POND ELIMINATION
BENEFIT -
ELIMINATE C-8 CONTAMINATION OF LUBECK WATER SYSTEM AQUIFER FROM THESE PONDS
STATUS - PROJECT APPROVED ($320M) 11/86 PERMIT APPROVAL 3Q87 START-UP 11/87
003546-33 - 06/10/87 - BJZ:kst
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WORK ENVIRONMENT PROGRAMS (in place since 1981)
EQUIPMENT DESIGN EQUIPMENT SEALS AND GASKETS LEAK MAINTENANCE OVERALL BUILDING VENTILATION CONTROL VENTILATED HOODS OVER DRYER DOORS VENT STACK HEIGHT FOR PROPER DISPERSION INGREDIENT MAKEUP STATION
PROTECTIVE EQUIPMENT COMFO HALF MASK RESPIRATORS BREATHING AIR RESPIRATORS LATEX RUBBER GLOVES
MONITORING AFFECTED PERSONNEL BLOOD LEVELS PERSONAL AIR MONITORING CRITICAL AREA AIR MONITORING
003546-14 - 05/19/87 - RJZskst
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C-8 TRENDS IN AIR
C-8 IN AIR (MPB)
PERSONAL SAMPLES .
AEL == 0.56 MPB
1980 1981 1982 1983 1984 1985
:
PEP POLYKETTLE
OPERATOR
-
0.12 0.09 0.09 0.19 0.08
:
PEP WET FINISHING
OPERATOR
i
0.95 0,30 0.09 0.11 0.09 0.17
h
RAW DISPERSION
'
A/C OPERATOR ' 1.20 0.26 0.09 0.21 0.20 0.36
B '
2 I
FINE POWDER DRYER
g !
I
ib.
^0
0\
OPERATOR 1.40 0.56 0.15 0.06 0.10 0.78
'
w^zozm
;
003546-3&4 - 06/09/87 - KJZskst
C-8 TREND IN BLOOD
FEP PROCESS OPERATOR (17)
PEP SERVICE OPERATOR (18)
RAW DISPERSION PROCESS OPERATOR (18)
GRANULAR PROCESS
OPERATOR (7)
FINE POWDER SERVICE OPERATOR (19)
MONOMER OPERATOR (31)
____C-8 IN BLOOD (P
1981 1982 1983 1984
1.53 0.60
1.48 0.59
1.14 0.57
1.09 0.53
7.66 6.67 6.36 6.38
3.44 3.12 2.64 2.70
2.25
1.01
2.07 1.02
1.74 0.83
1.59 0.82
ALL TEFLON* OPERATORS (490) 0.98 0.92
o
^o
^
* DuPont's registered tradeaark for its fluococarbon resin
003546-5&6 - 06/09/87 - KJZikst
S^ZOZUI
FINE POWDER DRYING C-8 IN AIR HISTORY
1980 - 1981
- INITIAL CONTROL PROGRAM
1982 - 1985 JUNE - DEC '85
- C-8 LEVELS BELOW 0.6 MPB
- " FRESH AIR" TO DRYER SWITCHED FROM DRYER ROOM TO EXTERNAL
- INSTALLED NEW LARGE DRYER
- C-8 LEVELS ROSE TO 2.3 MPB ACTION TO RESPOND
- INSTALLED VENTS ON FLOAT TANKS
- RELOCATED PACKOUT ROOM H&V
INTAKE
- INSTALLED LARGER DRYER ROOM EXHAUST FAN
AUG '86
- PROVIDED FRESH AIR TO DRYER
CONTROL ROOM
0
tsl
- C-8 LEVELS FELL TO 0.9 MPB
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0\
ACTION ITEM
- REPLACED GASKETS ON NO. 3 DRYER
DEC '86 - TODAY - C-8 LEVELS FELL TO 0.2 MPB
003546-23 - 06/10/87 - KJZ:kat
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ACTIVITY AT OTHER SITES
SITE DORDRECHT
ACTIVITY - Initial blood sampling - C-8 in air monitoring
MDF
- No blood sampling
- C-8 in air monitoring
g
g
CHAMBERS WORKS - Initial blood and air sampling
0U\l
~4
O
- Not sampling today
3M SPRUANCE
Blood sampling for organic fluoride Highest levels now below 10 ppm
Initial blood and air sampling Not sampling today
OUTSIDE DuPONT END USER (CHEMFAB)
Notified of birth defect problem Told to continue existing practices No sampling
C&P
- No blood sampling tor-other telomer products including TBSA
003546-8&9 - 06/09/87 - RJZ:kst
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ACTION ITEMS
ADMINISTRATIVE
ESTABLISH A MAXIMUM SAFE C-8 IN BLOOD CONCENTRATION
ESTABLISH A MAXIMUM SAFE C-8 IN DRINKING WATER LEVEL
USE AIR AND BLOOD MONITORING AT ALL DIRECT USER SITES FOR THOSE PERSONNEL AND AREAS WHERE EXPOSURE IS GREATEST - ESTABLISH A MINIMUM THRESHOLD LEVEL - PERIODIC SAMPLING TO MONITOR PERFORMANCE
REVIEW C-8 IN BLOOD DATA IN DETAIL TO DETERMINE IF ADDITIONAL CONTROL DEVICES ARE REQUIRED
MAINTENANCE
MAINTAIN PRIORITY ON SEALING OF NEW DRYER AT WASHINGTON WORKS
PROCESS
EXAMINE BENEFITS OF PURCHASE OF AQUEOUS SOLUTIONS OF C-8 VERSUS POWDER
CONTINUE TO EXAMINE C-9, C-10 AND C-12
003546-25 - 06/09/87 - BJZ:fest
NEW
SURFACTANTS
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CONCLUSIONS
SIGNIFICANT ENVIRONMENTAL REDUCTIONS ARE EXPECTED BY 1989.
PRESENT CONTROL SYSTEMS HAVE REDUCED C-8 IN BLOOD CONCENTRATIONS FROM 1979 LEVELS. FURTHER REDUCTIONS ARE EXPECTED IN THE FUTURE.
ELIMINATION OF C-8 IN EMPLOYEES BLOOD APPEARS UNLIKELY.
003546-34.- 06/04/87 - BJZ-.kst
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KEY POINTS
Karrh agreed to work directly with his counterpart at 3M to get the 3M C-8 chronic study in rats released.
Karrh stated that we should consider reducing the pressure on the conversion
It of C-8 to TBSA in FEP.
program.
was agreed that business needs should drive this
if if Karrh and Todd asked there was a way to determine there was an
aquifier water flow from under the supernate ponds to the Lubeck Water System wells. K. J. Zipfel has lead on this.
if Karrh asked
supernate shipment to Chambers Works was the long teem
solution for the disposal of supernafee containing C-8. Zipfel answered yes, but there is a low probability chance on the development of a new strain of bacteria which could destroy the C-8 or recovery using the technology being
developed for the fine powder dryer vent.
Karrh asked what is the significance of the high C-8 concentration in the blood of the raw dispersion operator.
It was stated that all people who have had their blood tested have had their C-8 levels reported to them.
Karrh requested that we get information on the accumulation of other fluorine containing surfactants in the blood of employees. Of specific note was TBSA in Chambers Works personnel.
Karrh asked why progress in our use of aqueous C-8 solution in lieu of powder has been so slow. Zipfel responded that liquid C-8 is presently on
order by Chambers Works and Dordrecht.
Karrh stated that we need to continue to pursue those programs aimed at
reducing the public exposure to C-8 as vigorously as we can. He further
stated that he agreed that our people will continue to have measureable C-8 levels in blood.
The action items recommended by Zipfel were all agreed to.
PCN-2 - 06/15/87 - BJZ:kst
5
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