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Dawson, CIH, CSP 9cooo DuPont Company Fayetteville Works PFOA in Blood Job Assignment APFO Eng.

AR226-2279 DuPont Modeling Methodology and Resul '-^'''^^j^^yig^SSS&'SSSsSss^^itw.tSussiSS^^ ^$^w^w^ft,^t<a<tei^a^a^8^^^ Debbie Mulrooney DuPont Engineering Technology April 24, 2002 Modeling Methodology . w^;r:s.:??

I. du Font de Memours and Company, Newark, Delaware or in the DuPont Records Management Center, Vilmlngton, Delavare.

AR age - 3270 452 ARZ26 - 3270 Vapor Pressure Determination:jo-- ] ~~ DUPONT REPORT 12735 |en---- VAPOR PRESSURE Test Guidelines) Authors Mary A.

HR226 - 3258 440 TRADE SECRET Study Title H-25434: Static, Acute, 48-Hour Screening Test to Daphnia magna Laboratory Project ID: DuPont-11409 AR226 -3258 DuPont11409 AuThoR: Laurie D.

., Dupont) plants 8.

AR226-3128 -_-- pemmus TRADE SECRET Study Title H-24119: Skin Irritation Test in Rabbits Laboratory Project ID: DuPont-3268 AUTHOR: Carol Finlay, B.A.

Introduction DuPont conducted air dispersion modeling of APFO* emissions from its Washington Works facility located near Parkersburg, WV.

FINE POWDER SERVICE OPERATOR (19) MONOMER OPERATOR (31) C-8 IN BLOOD (PPM) 1981 1982 1983 1984 1985 1986 1.53 1.48 1.14 1.09 1.09 1.22 0.60 0.59 0.57 0.53 0.53 0.56 7.66 6.67 6.36 6.38 5.96 6.57 3.44 3.12 2.64 2.70 2.38 2.93 2.25 1.01 2.07 1.02 1.74 0.83 1.59 0.82 1.37 0.81 1.37 am ALL TEFLON* OPERATORS (490) 0.98 0.92 -- -- m EID091397 * DuPont's registered trademark for its fluorocarbon resin 003546-5&6 - 06/09/87 - RJZkst 5S920Zni FINE POWDER DRYING C-8 IN AIR HISTORY 1980 - 1981 - INITIAL CONTROL PROGRAM 1982 - 1985 - C-8 LEVELS BELOW 0.6 MPB JUNE - DEC '85 - "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 - PROVIDED FRESH AIR TO DRYER CONTROL ROOM AUG '86 C-8 LEVELS FELL TO 0.9 MPB ACTION ITEM - REPLACED GASKETS ON NO. 3 DRYER DEC '86 - TODAY - C-8 LEVELS FELL TO 0.2 MPB 003546-23 - 06/10/87 - RJZ:kat EID091398 RJZQ26576 EID137096 ACTIVITY AT OTHER SITES SITE DORDRECHT ACTIVITY ~ Initial blood sampling - C-8 in air monitoring MDF -- No blood sampling -- C-8 in air monitoring CHAMBERS WORKS - initial blood and air sampling - Not sampling today 2 N s 3M - Blood sampling for organic fluoride - Highest levels now below 10 ppm SPRUANCE ~ 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 for- other telom er products including TBSA 003546-869 - 06/09/87 - RJZ:kst EID091399 EID137097 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 NEW SURFACTANTS LIKE C-9, C-10 AND C-12 EID091400 003546-25 - 06/09/87 - RJZrkst EID137098 RJZ0

Describe what ntcawroa DuPont has taken to eliminate the seqpt, and if the seeps have boon ' 1o-W * 9 s, , wenwtngi,-*.

^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 ^0u\ o 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 EID091398 EID137096 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 HD091399 EID137097 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 EID091400 LIKE EID137098 CONCLUSIONS SIGNIFICANT ENVIRONMENTAL REDUCTIONS ARE EXPECTED BY 1989.

ATTACHMENT 2 AR226-1540 SEPTEMBER 2002 THROUGH AUGUST 2003 AIR DISPERSION MODELING ANALYSIS OF APFO EMISSIONS DuPont Washington Works Facility Parkersburg, West Virginia RECEIVED OPPT NCIC 2003 October 31 8:25AM Prepared for: West Virginia Department of Environmental Protection Division of Air Quality 7012 MacCorkle Ave, SE Charleston, WV 25304-2943 Prepared by: DuPont Engineering Technology (DuET) Environmental Section Wilmington, DE 19898 October 17, 2003 1.

Introduction DuPont conducted air dispersion modeling o f APFO* emissions from its Washington Works facility located near Parkersburg, WV.

Does nol contain TSCA CBl -7- H-24256: Skin Irritation Test in Rabbits DuPont-3606 C.