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SRPT T-629-.8, T-6889.1, T-6316.4 DT15-A M S & b -lb itf 3M M E D IC A L DEPARTMENT, CORPORATE TOXICOLOGY Title: Inter-Species Comparison of Mechanisms Fluorochemical Toxicity following Intraperitoneal dosing of perfluorooctanesulfonate (PFOS, T-6295) or ammonium perfl^iorooctanoate (APFO, T-6889) in Rats and Guinea Pigs and oral dosing of N-ethyl perfluorooctanesulfonamido ethanol (N-EtFOSE, T-6316) in Rats.

.a A z24,-1933 \ Analytical Report 3M Company Analysis of PFOA and PFOS in Water Samples from Oakdale Municipality E04-0911 Exygen Report No.

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AR226-2102 Test Results Sample Date Range Concentration Range Action Level Industrial H ygiene 1/1/93 12/31/93 100% Sample Dt Sample# Duration Type Employee Name BTO : 08 TEFLON LOC: 045 BLDG. 162 ROOF-GENERAL 11/4/93 2310 450 A Pers Chemical C-8/FC-143 Cone Unit Percent <,Q8 MPB 5.4% BTO: 08 TEFLON LOC: 113 PIS - SHIFT MECHANIC (58MD) 11/16/93 19224 360 P 58MD C-8/FC-143 <.03 MPB 5.4% BTO: 03 LOC: 701 TEFLON FINE POWDER DRYER-EAST SIDE #2 1/21/93 8818 445 A 8/14/93 8823 360 A 6/29/93 8825 440 A 9/8/93 8832 360 A C-8/FC-143 C-8/FC-143 C-8/FC-143 C45/FC-143 2,04 MPB 031 MPB 0.23 MPB 0.39 MPB 525.0% ** 55.4% 41.1% 69.6% BTO: 08 LOC: 702 TEFLON FINE POWDER DRYER CONTROL ROOM (ALSO SEETTF031 1/21/93 1801 445 A C-8/FC-143 6/17/93 2135 450 A C-8/FC-143 6/29/93 2140 440 A C-8/FC-143 0.07 MPB 0 MPB 0.1 MPB 125% 0.0% 17.9% BTO: 08 LOC: 703 TEFLON FINE POWDER PACKOUT ROOM 0/26/93 2172 375 A 8/31/99 2173 360 A 9/13/93 2216 375 A 10/20/93 2271 375 A 11/8/93 2306 360 A C-8/FC-143 C-8/FC-143 C-8/FC-143 C-8/FC-143 C-8/FC-143 <03 MPB <.03 MPB <.03 MPB <.03 MPB <.03 MPB 5.4% 5.4% 5.4% 5.4% 5.4% BTO: 08 TEFLON@ LOC: 706 FINE POWDER DRYER #3 1/21/93 1800 440 A 6/14/93 2138 360 A 6/29/93 2139 440 A ..

AR226-2217 Chris E Shoop 11/28/2001 05:07 P M ....... ............... ........................... .

________________________________________________Name_____________________________________ Thompson Collins Watkins Smith Coneentratlons are from the deposition modeling runs, and Include wet and dry depletion due to deposition I AR226-2245 EDD0079976 C o o rd in a te s Particulate Deposition (g /m 3/ y r ) Vapor Deposition (q /m V ) Total Deposition (q /m V ) 445213E 4346090N 443141E 4345753N 443223E 4345847N 443254E 4345888N 0.00098 0.00179 0.00193 0.00186 0.00008 0.00021 0.00019 0.00018 0.00106 0.00200 0.00212 0.00204 i Particulate Concentration (uq/m' i Vapor Concentration (u g /m 3) Total Concentration (ug/m3) 0.02000 0.03217 0.05217 0.03752 0.05854 0.09606 0.03665 0.05695 0.09360 0.03554 0.05587 0.09141 EDD0079977

AR226-2399 COMMUNITY STATUS VATER AIR SOLID VASTE 10635-1 - 03/08/69 - WBC:kt EID951507 RJZ009905 WASHINGTON WORKS OFF-PLANT EMISSIONS POUNDS C-8 1983 1986 ' 1988 WATER 21,700 19,100 23,300 AIR 12,700 16,200 26,200 PRODUCT 8,000 8,300 11,300 OFF-PLANT DISPOSAL 7,700 TO CW - WWTP TO LETART LANDFILL 8,300 9.000 2.000 50,100 51,900 71,800 RJZ009906 10635-2 - 03/01/19 - WIC:kst EID951508 C-8 LEVELS IN DRINKING WATER DISTANCE FROM NO. 5 OUTFALL (MILKS) PPB 1984 1987 1988 PARKERSBURG 7.50 UPSTREAM ND ND -- WASH WORKS 0.50 UPSTREAM ND ND ND LUBECK WATER DISTRICT 0.25 DOWNSTREAM 0.25 DOWNSTREAM 1.1 1.9 1.8 1.5 1.9 1.4 LITTLE HOCKING 3.00 DOWNSTREAM 0.6 ND ND RAVENSWOOD 29.0 DOWNSTREAM ND ND = NOT DETECTABLB RJZQ9907 10635-3 - 03/08/89 - WIC:kat EID951509 WASHINGTON WORKS C '8 ANNURL M E A N OONCEN T R A T /O N C A S E 1 - 1983 806<500ZftI EID951510 C-8 ENVIRONMENTAL PROGRAMS WATER CLOSURE OF SUPERNATE PONDS TIMING 4Q88 PURCHASE OF LUBECK WATER COMPANY - CLOSING TURN OVER TO DuPONT 3Q89 4Q91 REPLACEMENT OF C-8 IN FBP WITH TBSA POSSIBLE C-8 RECOVERY FROM FBP EFFLUENT 19X IN 1988 IN PROGRESS AIR FINE POWDER DRYER RECOVERY PROJECT UPDATE FENCE LINE MONITORING 4089 4Q89 RJZ009909 10635-4 - 03/08/09 - WKCkst EXD951511

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RECYCLED N> AR226-2614 AR226-2614 DUPONT TELOMER MANUFACTURING SITES: ENVIRONMENTAL ASSESSMENT OF PFOA LEVELS IN AIR AND WATER Date: September 2003 Project No.: 508501 18983843.00003 CORPORATE REMEDIATION GROUP An Alliance between DuPont and URS Diamond Barley Mill Plaza, Building 27 Wilmington, Delaware 19805 DuPont Telomer Manufacturing Sites: Environmental Assessment of PFOA Levels in Air and Water______ Table of Contents TABLE OF CONTENTS Executive Summary..............................................................................................................iv 1.0 Introduction.....................................................................................................................1 1.1 Chambers W orks....................................................................... ........................ 1 1.2 Washington W orks............................................................................................ 2 2.0 Data Analysis and Analytical Reporting...................................................................... 3 3.0 Air Dispersion Modeling.............................................................................................. 4 3.1 Chambers Works - ISC3 Modeling Methodology and Results........................ 4 3.1.1 Emission Source Information................................................................. 4 3.1.2 Modeling Methodology......................................................................... 4 3.1.3 Modeling Results.................................................................................... 4 3.2 Washington Works - Screen3 Modeling Methodology and Results................. 6 3.2.1 Data and Modeling Procedures..............................................................6 3.2.2 Modeling Results.....................................................................................8 4.0 Chambers Works Groundwater Sampling.................................................................... 9 4.1 Background........................................................................................................... 9 4.2 Regional Geology................................................................................................. 9 4.3 Site Geology.......................................................................................................... 9 4.4 Site Hydrogeology...............................................................................................10 4.5 Sample Location Selection..................................................................................11 4.6 Sampling Activities and Results......................................................................... 11 4.7 Summary o f Results............................................................................................ 12 5.0 Chambers Works Surface Water Sampling................................................................ 14 5.1 Site Effluent Sample Results.............................................................................. 14 5.2 Chambers Works and Upstream Surface Water Intake Results....................... 14 5.3 Delaware River Surface Water Sampling..........................................................15 5.3.1 Delaware River - Discussion o f Results..............................................16 5.4 Salem Canal......................................................................................................... 17 5.5 Summary o f Results............................................................................................ 17 6.0 Conclusions...................................................................................................................18 7.0 References.....................................................................................................................19 EnvIronmentalAssessmentdoc Oct. 1, 03 Wilmington, DE DuPont Telomer Manufacturing Sites: Environmental Assessment of PFOA Levels In Air and Water______ Table of Contents Table 1 Table 2 Table 3 Table 4 Table 5 Table 6 Table 7 Table 8 Table 9 Table 10 Table 11 Table 12 Table 13 Table 14 TABLES CATT Established Screening Levels.......................................................... vi Summary o f Air Dispersion Modeling Results.......................................... vi Summary o f Groundwater Sampling Results-Chambers W orks...............vi Summary o f Surface Water Sampling Results-Chambers W orks............ vi Chambers Works Stack Parameters and Emission Rates.............................5 Chambers Works Building Heights.............................................................. 5 Chambers Works Site Air Dispersion Modeling Results.............................6 Chambers Works Telomers Operations Air Dispersion Modeling Results6 Washington Works GEP Stack Heights........................................................ 7 Chambers Work Groundwater Analytical Results..................................... 12 Chambers Works Outfall DSN001 Results.................................................14 Chambers Works Surface Water Intake Results........................................ 15 Chambers Works Delaware River Sampling, June 9, 2003.......................... .......................................................................................

AR226-2619 2003-DuET-??

AR226-2634 CM CM nTnxoatl AR226-2634 JANUARY 2003 BASELINE C-8 SAMPLING DUPONT FAYETTEVILLE WORKS FAYETTEVILLE, NORTH CAROLINA Date: March 2003 Project No.: 18983753.00037 CORPORATE REMEDIATION GROUP An Alliance between DuPont and URS Diamond Barley Mill Plaza, Building 27 Wilmington, Delaware 19805 January 2003 Baseline C-8 Sampling Introduction During the week of January 27th 2003, groundwater was sampled from four monitoring wells at the DuPont Fayetteville Works.

AR226-2639 28 Forwarded by Andrea V Malinowski/AE/DuPont on 11/15/2004 11:33 AM Jim E Pesek/AE/DuPont 11/15/2004 11:17 AM To Michael D Aucoin/AE/DuPont@DuPont, Andrew S Hartten/AE/DuPont@DuPont, Andrea V Malinowski/AE/DuPont@DuPont cc Jeff E Todd/HO/DuPont@DuPont, Bradley S Martin/AE/DuPont@DuPont Subject Re : data in Envista for PAS (Document link: Andrea Malinowski) Andrew and Andrea-- I now have the explanations for the data set below.