:3 T | 33 = L22ii1 o8 32 a3 9l8gso8lz8g3 gf N 3B$d<3 ze z% |g || a ia gI o 3 7 8 2 3 53gof of A"gfp gl 2= 3 Es : : 8 3 8 3 8 3 322 5 83: 3 2 gEE =cBE :: 50 8 2 gg 2 g| & #38F sgl 5 g3sll g22l 3of 2 <| 593 2 2 3 < g 23 | 2 2 zg 3 a | Z=H g28| ZZ| 8gl| |gF |=S2gg ||aZg | x 2 oCf E2 E2 E4E3R8ERE8 Dgldg a& 8o~N [2 EXHIBIT| % z Z- 27 y = B gE FEE 3 = Ez Z oH 5l1xl8g]lH|ls2A ] 5.EIlHE5R ER=(LE|E REE olgf RREEREHE SI3(E] 21FEl2a |5IZIE| |EIE] |lalolslc|EE 2:3 12 2 FE | IE 53 z28] [5] 2 & g 5 ~N | i 3215 [8] EleS| |e|elg] |E2 Z|%|33|= 5 g1lal9sl 2) Asie |gS| 2F 5 (BY EE FE ol le Zs 22(%|8|3 || | 4 v z g LE Z| gf Zzl=l=| |.EZl. 3E|l2z z|~= fig: gi a] gE Eo sz I I. z Lgl HE z Hl 3 - : Ul akeled THE] |g EEE ||g] | o ol 1|251|5e2 HBEg BEER o | H|E] i1e | TEwlEz | |2El1e3 (ele]eelz]3 | F} 3FE 2115 Zi |g [WN u | alalel=(v| | 2ol%l Hi 1s5i5l%2E |Z2l E E%| gl i | gl2|e3lz3 ENE J 55--11o33l 32| 13|3 =2 C183 NER o 3ZI3BB|] %% 2sl5s 213512203lgz(2 | glze KEBEEEKE gz | `7zl |ol8z|lz%lg]- Mgl EF51E3E/3E3 =2 Ja tl 4% 4 z|gES | 18] | ZT Tel 2 I 1gg] (8B2I5S8IEI1S8g] |g5] EIS oEfz|] 2 2 =i H5 E- Hs E: 5 3z : HE gi zE i g3i5 23% 3 ig 27 $3iz ss2iEl|: | CIEE 3 f2k3 T] | | sf2] ElEElEz PEE E515 sg5 } 3 3 Hk] % IE 23% is EEN Y!

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TestResirits t ' . .

AR226-2151 To: cc: Subject: Andrea Malinowski/DPL/DUP@DUP, Bernard J ReiHy/AE/DuPont@DuPont, Stephen H Korzeniowsld/DuPont@DuPont, Jim E Pesek/AE/DuPont@DuPont, Robert C Buck/DuPont@DuPont, Susan S Miteti/DuPont@DuPont.

AR226-2161 Current Permlt/Appljcation/PDF # 1823A 815D 8150 1353A Pre-ExIstIng 514A 614A 781 1953 2365A Note: For some vents the surfactant rate la less than the total paniculate reported in Air Emissions Inventory which can include polymer dust.

AR226-2259 /y Debbie J Mulrooney 02/20/200212:47 PM To: cc: Subject: Todd M Krieger/AE/DuPont@DuPont Steven H Swearingen/AE/DuPont@DuPont, Robert F Pincnot/DEWAE/DuPont@DuPont Re: Environmental Impact Study Q The new stack height is much higher than what we modeled (85 vs. 55 ft) and the new flow rate is also much higher (12,400 scfm vs. 4710 scfm). since these two changes will both improve dispersion, not make it worse, I'm not sure that there is really a reason to revise the modeling and the report.

RECYCLED t.^1 AR226-2624 INS AR226-2624 JULY 2004 PFOA SAMPLING DUPONT CIRCLEVILLE WORKS CIRCLEVILLE, OHIO Date: August 2004 Project No.: 18984003.04005 CORPORATE REMEDIATION GROUP An Alliance between DuPont and URS Diamond Barley Mill Plaza, Building 27 Wilmington, Delaware 19805 July 2004 PFOA Sampling Introduction On July 8,2004, groundwater was sampled from two recovery wells and three production wells at the DuPont Circleville Plant.

- Tr AR226-2637 ) 25 AR226-2637 PHASE I SUPPLEMENTAL RCRA FACILITY INVESTIGATION REPORT DUPONT FAYETTEVILLE WORKS FAYETTEVILLE, NORTH CAROLINA Prepared for DuPont Fayetteville Works Highway 87 South Fayetteville, NC 28302 RCRA Permit No.

AR226-2643 32 PROJECT GW SAMPLING 8/02 GW SAMPLING 8/02 GW SAMPLING 8/02 GW SAMPLING 8/02 GW SAMPLING 8/02 GW SAMPLING 8/02 GW SAMPLING 8/02 GW SAMPLING 8/02 GW SAMPLING 8/02 GW SAMPLING 8/02 SRCNAME WELL1 WELL10 WELL2 WELLS WELL4 WELLS WELL6 WELL7 WELL8 WELL9 THEME Groundwater Groundwater Groundwater Groundwater Groundwater Groundwater Groundwater Groundwater Groundwater Groundwater DATESMPL 8/6/2002 8/6/2002 8/6/2002 8/6/2002 8/6/2002 8/6/2002 8/6/2002 8/6/2002 8/6/2002 8/6/2002 SMPLT FS FS FS FS FS FS FS FS FS FS SAMPLEJMUMBER SH-WELL1 SH-WELL10 SH-WELL2 SH-WELL3 SH-WELL4 SH-WELL5 SH-WELL6 SH-WELL7 SH-WELL8 SH-WELL9 AR226-SH2I 643 FILTERED CASNO ANALYTE RsltPost Rs T 3825261 FC-143 1200000 1 T 3825261 FC-143 306000 T 3825261 FC-143 698000 T 3825261 FC-143 697000 T 3825261 FC-143 202000 T 3825261 FC-143 31700 T 3825261 FC-143 201000 T 3825261 FC-143 243000 T 3825261 FC-143 212000 T 3825261 FC-143 1540000 1 AR226-2643 C8 results Envista 111104.xls Page1 PREPMTHD None None None None None None None None None None PREPREP NS NS NS NS NS NS NS NS NS NS DRY 1 1 1 1 1 1 1 1 1 1 LAB_NUMBER L33570-1 L33570-10 L33570-2 L33570-3 L33570-4 L33570-5 L33570-6 L33570-7 L33570-8 L33570-9 RSLTMOD RESULT 1200000 306000 698000 697000 202000 31700 201000 243000 212000 1540000 UNIT NG/L NG/L NG/L NG/L NG/L NG/L NG/L NG/L NG/L NG/L MDL PQL 500000 50000 500000 500000 50000 5000 50000 500000 50000 500000 C8 results Envista 111104-xls

EPL EXPERIMENTAL PATHOLOGY LABORATORIES, INC.

AR226-2733 e r e The miracles of science Study Title ADSORPTION-DESORPTION SCREENING STUDIES OF AMMONIUM PERFLUOROOCTANOATE Author William R.

AR226-2816 TRADE SECRET Study Title J'^--^--^^--^--t--mVYOEAR ORAL TOXICrTY-ONCOGENICtTY STUDY IN RATS "PEER REVIEW OF OVARIES Authors Peter C.

AR226-2833 JWW^.'

AR226-2918 FOR DU PONT USE ONLY cc: Haskell E.

AR226-2967 Study Sponsor: Issue Date: Document Reference No.: ATOCHEM Unavailable (Data Only) Bacterial Growth Inhibition Author(s): J.C.