AJP000903 AR226-2072 C *r T * i * * 34 * C1av '"' ,l -0 '' _X ' .* :i <1 vi" *X* rS--i ty 0 ta-.:: *T< * .r* k- *o *o ** r O * # tri U . kr r4 ^ ' ;5S K fi. 5* O ## SS; FO) < iTM* i LU \[-0.

________________________________________________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

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.

AR226-2673 63 PROJECT SRCNAME AIR SAMPLING 2003 AMS1-E1 AIR SAMPLING 2003 AMS1-E10 AIR SAMPLING 2003 AMS1-E11 AIR SAMPLING 2003 AMS1-E2 AIR SAMPLING 2003 AMS1-E4 AIR SAMPLING 2003 AMS1-E5 AIR SAMPLING 2003 AMS1-E7 AIR SAMPLING 2003 AMS1-E8 AIR SAMPLING 2003 AMS1-E9 AIR SAMPLING 2003 AMS2-E1 AIR SAMPLING 2003 AMS2-E11 AIR SAMPLING 2003 AMS2-E2 AIR SAMPLING 2003 AMS2-E4 AIR SAMPLING 2003 AMS2-E5 AIR SAMPLING 2003 AMS2-E7 AIR SAMPLING 2003 AMS2-E8 AIR SAMPLING 2003 AMS2-E9 AIR SAMPLING 2003 AMS3-E1 AIR SAMPLING 2003 AMS3-E10 AIR SAMPLING 2003 AMS3-E11 AIR SAMPLING 2003 AMS3-E2 AIR SAMPLING 2003 AMS3-E4 AIR SAMPLING 2003 AMS3-E5 AIR SAMPLING 2003 AMS3-E8 AIR SAMPLING 2003 AMS3-E9 AIR SAMPLING 2003 AMS4-E1 AIR SAMPLING 2003 AMS4-E10 AIR SAMPLING 2003 AMS4-E11 AIR SAMPLING 2003 AMS4-E2 AIR SAMPLING 2003 AMS4-E4 AIR SAMPLING 2003 AMS4-E7 AIR SAMPLING 2003 AMS4-E8 AIR SAMPLING 2003 AMS4-E9 AIR SAMPLING 2003 AMS5-E1 AIR SAMPLING 2003 AMS5-E10 AIR SAMPLING 2003 AMS5-E11 AIR SAMPLING 2003 AMS5-E2 AIR SAMPLING 2003 AMS5-E4 AIR SAMPLING 2003 AMS5-E5 AIR SAMPLING 2003 AMS5-E7 AIR SAMPLING 2003 AMS5-E8 AIR SAMPLING 2003 AMS5-E9 AIR SAMPLING 2003 AMS6-E1 AIR SAMPLING 2003 AMS6-E10 AIR SAMPLING 2003 AMS6-E11 THEME DATESMPL SMPLT SAMPLE NUMBER Ambient Air 11/6/2003 FS WWK-A-AMS1-E1 Ambient Air 1/15/2004 FS WWK-A-AMS1-E10 Ambient Air 1/16/2004 FS WWK-A-AMS1-E11 Ambient Air 11/12/2003 FS WWK-A-AMS1-E2 Ambient Air 11/24/2003 FS WWK-A-AMS1-E4 Ambient Air 11/30/2003 FS WWK-A-AMS 1-E5 Ambient Air 12/11/2003 FS WWK-A-AMS1-E7 Ambient Air 12/12/2003 FS WWK-A-AMS 1-E8 Ambient Air 12/19/2003 FS WWK-A-AMS1-E9 Ambient Air 11/6/2003 FS WWK-A-AMS2-E1 Ambient Air 1/16/2004 FS WWK-A-AMS2-E11 Ambient Air 11/12/2003 FS WWK-A-AMS2-E2 Ambient Air 11/24/2003 FS WWK-A-AMS2-E4 Ambient Air 11/30/2003 FS WWK-A-AMS2-E5 Ambient Air 12/11/2003 FS WWK-A-AMS2-E7 Ambient Air 12/12/2003 FS WWK-A-AMS2-E8 Ambient Air 12/19/2003 FS WWK-A-AMS2-E9 Ambient Air 11/6/2003 FS WWK-A-AMS3-E1 Ambient Air 1/15/2004 FS WWK-A-AMS3-E10 Ambient Air 1/16/2004 FS WWK-A-AMS3-E11 Ambient Air 11/12/2003 FS WWK-A-AMS3-E2 Ambient Air 11/24/2003 FS WWK-A-AMS3-E4 Ambient Air 11/30/2003 FS WWK-A-AMS3-E5 Ambient Air 12/12/2003 FS WWK-A-AMS3-E8 Ambient Air 12/19/2003 FS WWK-A-AMS3-E9 Ambient Air 11/6/2003 FS WWK-A-AMS4-E1 Ambient Air 1/15/2004 FS WWK-A-AMS4-E10 Ambient Air 1/16/2004 FS WWK-A-AMS4-E11 Ambient Air 11/12/2003 FS WWK-A-AMS4-E2 Ambient Air 11/24/2003 FS WWK-A-AMS4-E4 Ambient Air 12/11/2003 FS WWK-A-AMS4-E7 Ambient Air 12/12/2003 FS WWK-A-AMS4-E8 Ambient Air 12/19/2003 FS WWK-A-AMS4-E9 Ambient Air 11/6/2003 FS WWK-A-AMS5-E1 Ambient Air 1/15/2004 FS WWK-A-AMS5-E10 Ambient Air 1/16/2004 FS WWK-A-AMS5-E11 Ambient Air 11/12/2003 FS WWK-A-AMS5-E2 Ambient Air 11/24/2003 FS WWK-A-AMS5-E4 Ambient Air 11/30/2003 FS WWK-A-AMS5-E5 Ambient Air 12/11/2003 FS WWK-A-AMS5-E7 Ambient Air 12/12/2003 FS WWK-A-AMS5-E8 Ambient Air 12/19/2003 FS WWK-A-AMS5-E9 Ambient Air 11/6/2003 FS WWK-A-AMS6-E1 Ambient Air 1/15/2004 FS WWK-A-AMS6-E10 Ambient Air 1/16/2004 FS WWK-A-AMS6-E11 TOP 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 C8 results Envista 111104.xls W W K - air AR226-2673 M FILTERED CASNO ANALYTE RsItPost RsItVal UNITS Hit LAB_ANALYTE QUAL_EPA QUALJNHOUSE REVIEW 0 T 335671 PFOA <0.00014 0.00007 MG/M3 0 PFOA 0 T 335671 PFOA <0.00014 0.00007 MG/M3 0 PFOA 0 T 335671 PFOA <0.00014 0.00007 MG/M3 0 PFOA 0 T 335671 PFOA <0.00014 0.00007 MG/M3 0 PFOA 0 T 335671 PFOA <0.00014 0.00007 MG/M3 0 PFOA 0 T 335671 PFOA <0.00014 0.00007 MG/M3 0 PFOA 0T 335671 PFOA 0.0003 0.0003 MG/M3 1 PFOA 0 T 335671 PFOA <0.00012 0.00006 MG/M3 0 PFOA 0 T 335671 PFOA <0.00014 0.00007 MG/M3 0 PFOA 0 T 335671 PFOA 0.00007 0.00007 MG/M3 1 PFOA 0 T 335671 PFOA <0.00014 0.00007 MG/M3 0 PFOA OT 335671 PFOA 0.0009 0.0009 MG/M3 1 PFOA 0T 335671 PFOA 0.0002 0.0002 MG/M3 1 PFOA 0T 335671 PFOA 0.0007 0.0007 MG/M3 1 PFOA OT 335671 PFOA 0.0003 0.0003 MG/M3 1 PFOA OT 335671 PFOA <0.00014 0.00007 MG/M3 0 PFOA 0 T 335671 PFOA 0.00011 0.00011 MG/M3 1 PFOA 0 T 335671 PFOA 0.00008 0.00008 MG/M3 1 PFOA 0T 335671 PFOA 0.0004 0.0004 MG/M3 1 PFOA 0 T 335671 PFOA <0.0002 0.0001 MG/M3 0 PFOA 0T 335671 PFOA 0.0009 0.0009 MG/M3 1 PFOA 0T 335671 PFOA 0.0002 0.0002 MG/M3 1 PFOA 0T 335671 PFOA 0.0007 0.0007 MG/M3 1 PFOA OT 335671 PFOA <0.00014 0.00007 MG/M3 0 PFOA 0 T 335671 PFOA 0.00011 0.00011 MG/M3 1 PFOA 0 T 335671 PFOA <0.00014 0.00007 MG/M3 0 PFOA 0 T 335671 PFOA <0.00014 0.00007 MG/M3 0 PFOA 0 T 335671 PFOA <0.00014 0.00007 MG/M3 0 PFOA 0 T 335671 PFOA <0.00014 0.00007 MG/M3 0 PFOA 0 T 335671 PFOA <0.00014 0.00007 MG/M3 0 PFOA OT 335671 PFOA <0.00012 0.00006 MG/M3 0 PFOA 0 T 335671 PFOA <0.00014 0.00007 MG/M3 0 PFOA OT 335671 PFOA <0.00014 0.00007 MG/M3 0 PFOA 0 T 335671 PFOA <0.00014 0.00007 MG/M3 0 PFOA OT 335671 PFOA 0.0003 0.0003 MG/M3 1 PFOA 0T 335671 PFOA 0.0003 0.0003 MG/M3 1 PFOA 0 T 335671 PFOA <0.00014 0.00007 MG/M3 0 PFOA 0 T 335671 PFOA <0.00014 0.00007 MG/M3 0 PFOA 0 T 335671 PFOA <0.00014 0.00007 MG/M3 0 PFOA OT 335671 PFOA <0.00014 0.00007 MG/M3 0 PFOA 0 T 335671 PFOA <0.00014 0.00007 MG/M3 0 PFOA 0 T 335671 PFOA <0.00014 0.00007 MG/M3 0 PFOA 0 T 335671 PFOA <0.00014 0.00007 MG/M3 0 PFOA 0 T 335671 PFOA <0.00014 0.00007 MG/M3 0 PFOA 0 T 335671 PFOA <0.00014 0.00007 MG/M3 0 PFOA Page 1 METHODNO PREPMTHD PREPREP DRY LAB NUMBER EXM21703 NS NS W L0001277-2 EXM21703 NS NS w L0001667-2 EXM21703 NS NS w L0001668-2 EXM21703 NS NS w L0001308-2 EXM21703 NS NS w L0001359-2 EXM21703 NS NS w L0001400-2 EXM21703 NS NS w L0001444-2 EXM21703 NS NS w L0001448-2 EXM21703 NS NS w L0001508-2 EXM21703 NS NS w L0001277-3 EXM21703 NS NS w L0001668-3 EXM21703 NS NS w L0001308-3 EXM21703 NS NS w L0001359-3 EXM21703 NS NS w L0001400-3 EXM21703 NS NS w L0001444-3 EXM21703 NS NS w L0001448-3 EXM21703 NS NS w L0001508-3 EXM21703 NS NS w L0001277-4 EXM21703 NS NS w L0001667-3 EXM21703 NS NS w L0001668-4 EXM21703 NS NS w L0001308-4 EXM21703 NS NS w L0001359-4 EXM21703 NS NS w L0001400-4 EXM21703 NS NS w L0001448-4 EXM21703 NS NS w L0001508-4 EXM21703 NS NS w L0001277-5 EXM21703 NS NS w L0001667-4 EXM21703 NS NS w L0001668-5 EXM21703 NS NS w L0001308-5 EXM21703 NS NS w L0001359-5 EXM21703 NS NS w L0001444-4 EXM21703 NS NS w L0001448-5 EXM21703 NS NS w L0001508-5 EXM21703 NS NS w L0001277-6 EXM21703 NS NS w L0001667-5 EXM21703 NS NS w L0001668-6 EXM21703 NS NS w L0001308-6 EXM21703 NS NS w L0001359-6 EXM21703 NS NS w L0001400-5 EXM21703 NS NS w L0001444-5 EXM21703 NS NS w L0001448-6 EXM21703 NS NS w L0001508-6 EXM21703 NS NS w L0001277-7 EXM21703 NS NS w L0001667-6 EXM21703 NS NS w L0001668-7 C8 results Envista 111104.xls ^asBSssBSKi W W K -air RSLTMOD RESULT UNIT MDL PQL Expr1029 LOCATION ID DUPNO < 0.00014 MG/M3 0.00014 11767997 11767997 1 < 0.00014 MG/M3 0.00014 11768173 11768173 1 < 0.00014 MG/M3 0.00014 11768193 11768193 1 < 0.00014 MG/M3 0.00014 11768041 11768041 1 < 0.00014 MG/M3 0.00014 11768085 11768085 1 < 0.00014 MG/M3 0.00014 11768073 11768073 1 0.0003 MG/M3 0.00014 11768107 11768107 1 < 0.00012 MG/M3 0.00012 11768123 11768123 1 < 0.00014 MG/M3 0.00014 11768135 11768135 1 0.00007 MG/M3 0.00014 11767999 11767999 1 < 0.00014 MG/M3 0.00014 11768195 11768195 1 0.0009 MG/M3 0.00014 11768043 11768043 1 0.0002 MG/M3 0.00014 11768087 11768087 1 0.0007 MG/M3 0.00014 11768075 11768075 1 0.0003 MG/M3 0.00014 11768109 11768109 1 < 0.00014 MG/M3 0.00014 11768125 11768125 1 0.00011 MG/M3 0.00014 11768137 11768137 1 0.00008 MG/M3 0.00014 11768001 11768001 1 0.0004 MG/M3 0.00014 11768175 11768175 1 < 0.0002 MG/M3 0.0002 11768197 11768197 1 0.0009 MG/M3 0.00014 11768045 11768045 1 0.0002 MG/M3 0.00014 11768089 11768089 1 0.0007 MG/M3 0.00014 11768077 11768077 1 < 0.00014 MG/M3 0.00014 11768127 11768127 1 0.00011 MG/M3 0.00014 11768139 11768139 1 < 0.00014 MG/M3 0.00014 11768003 11768003 1 < 0.00014 MG/M3 0.00014 11768177 11768177 1 < 0.00014 MG/M3 0.00014 11768199 11768199 1 < 0.00014 MG/M3 0.00014 11768047 11768047 1 < 0.00014 MG/M3 0.00014 11768091 11768091 1 < 0.00012 MG/M3 0.00012 11768111 11768111 1 < 0.00014 MG/M3 0.00014 11768129 11768129 1 < 0.00014 MG/M3 0.00014 11768141 11768141 1 < 0.00014 MG/M3 0.00014 11768005 11768005 1 0.0003 MG/M3 0.00014 11768179 11768179 1 0.0003 MG/M3 0.00014 11768201 11768201 1 < 0.00014 MG/M3 0.00014 11768049 11768049 1 < 0.00014 MG/M3 0.00014 11768093 11768093 1 < 0.00014 MG/M3 0.00014 11768079 11768079 1 < 0.00014 MG/M3 0.00014 11768113 11768113 1 < 0.00014 MG/M3 0.00014 11768131 11768131 1 < 0.00014 MG/M3 0.00014 11768143 11768143 1 < 0.00014 MG/M3 0.00014 11768007 11768007 1 < 0.00014 MG/M3 0.00014 11768183 11768183 1 < 0.00014 MG/M3 0.00014 11768203 11768203 1 Page 2 W W K - air PROJECT SRCNAME THEME DATESMPL SMPLT SAMPLE NUMBER TOP BOTTOM FILTERED CASNO ANALYTE RsitPost RsitVal UNITS Hit LAB ANALYTE QUAL EPA QUAL INHOUSE REVIEW AIR SAMPLING 2003 AMS6-E2 Ambient Air 11/12/2003 FS WWK-A-AMS6-E2 0 0T 335671 PFOA <0.00014 0.00007 MG/M3 0 PFOA AIR SAMPLING 2003 AMS6-E5 Ambient Air 11/30/2003 FS WWK-A-AMS6-E5 0 0T 335671 PFOA <0.00014 0.00007 MG/M3 0 PFOA AIR SAMPLING 2003 AMS6-E7 Ambient Air 12/11/2003 FS WWK-A-AMS6-E7 0 0T 335671 PFOA <0.00012 0.00006 MG/M3 0 PFOA AIR SAMPLING 2003 AMS6-E9 Ambient Air 12/19/2003 FS WWK-A-AMS6-E9 0 0T 335671 PFOA <0.00014 0.00007 MG/M3 0 PFOA AIR SAMPLING 2003 AMSFBLK-E1 Ambient Air 11/6/2003 FB WWK-A-AMSFBLK-E1 0 0T 335671 PFOA <100 50 NG/ML 0 PFOA AIR SAMPLING 2003 AMSFBLK-E10 Ambient Air 1/15/2004 FB WWK-A-AM

AR226-2830 m Material Tested: Material Submitted by: Copies E.

AR226-2831 Copies to: Han, r vE ' 1 ` du Pnt de Nemours and Company Haskell Laboratory for Toxicology and Industrial Medicine HASKELL LABORATORY REPORT NO. 246-71 Procedure : The test material ~ : u " cs *' sln8le du Results: ACUTE ORAL TEST Suspens ion r/o) 25 25 25 25 25 12 12 <m g/fcg> 17,000t 11,000t 7,500t 5,000 3,400 2,250 670 Mortality* S - 14 d.

AR226-3386 Development of a Mammalian Screen to Evaluate Absorption and Persistence of Fluorinated Chemicals C.

W M -.tbPI 53 000430 2 P- --- l_ o o D C .-8 LEVEL.

ADVANCE UNEDITED DRAFT Decision POPRC-1/7 on perfluorooctane sulfonate The Persistent Organic Pollutants Review Committee, Having examined the proposal by Sweden, which is a Party to the Stockholm Convention on Persistent Organic Pollutants, to list perfluorooctane sulfonate and ninety-six potential perfluorooctane sulfonate precursors in Annex A to the Convention and applied the screening criteria specified in Annex D to the Convention, Noting that the perfluorooctane sulfonate anion does not have a Chemical Abstracts Service number and does not appear as an anion in the environment, but that the perfluorooctane sulfonate acid and its salts listed in the proposal have the following Chemical Abstracts Service numbers: (a) Acid 1763-23-1 (b) K+ salt 2795-39-3 (c) Li salt 29457-72-5 (d) NH4+ salt 29081-56-9 (e) Diethanolamine salt 70225-14-8 Decides, in accordance with paragraph 4 (a) of Article 8 of the Convention, that it is satisfied that the screening criteria have been fulfilled for perfluorooctane sulfonate, as set out in the evaluation contained in the annex to the present decision; Decides also, in accordance with paragraph 6 of Article 8 of the Convention and paragraph 29 of decision SC-1/7 of the Conference of the Parties to the Stockholm Convention, to establish an ad hoc working group to review the proposal further and to prepare a draft risk profile in accordance with Annex E to the Convention; Decidesfurther that issues related to the inclusion of potential perfluorooctane sulfonate precursors should be dealt with in developing the draft risk profile; Invites, in accordance with paragraph 4 (a) of Article 8 of the Convention, Parties and observers to submit to the Secretariat the information specified in Annex E in accordance with the format set out in annex [Y] to the report of its first meeting1before [Z], UNEP/POPS/POPRC. 1/10. 000243 P-2 Annex to decision POPRC-1/7 Evaluation of perfluorooctane sulfonate against the criteria of Annex D A.

fifi

AR 2.3.6 - 0% 6 B IO D E G R A D A T IO N (BOD/COD) T E S T S U B S T A N C E __________________________________________________ Identity: A mixture containing perfluorooctanesulfonate, which m ay a lso be referred to a s P F O S , FC-95, or a s a com ponent of FC -20 6C E . (1Octanesulfonic acid) (C A S # 2795-39-3).