BIODEGRADATION TEST SUBSTANCE Identity: [2-(N-Ethylperfluorooctanesulfonamido) ethyl acrylate; may also be referred to as B1228, D-1, EtFOSEA, or FX-13. (2-Propenoic acid, 2[ethyl[heptadecafluorooctyl)sulfonyl]amino]ethyl ester, CAS # 423-825) Remarks: Material is an amber solid.

ARm -OHlC B IO SE A R C H .

AR226-1985 A EID077099

AR226-2039 INTEROFFICE MEMORANDUM Date: 21-Sep-1998 12:30pm EDT From: JACK OFFENBERGER .

AR226-2173 _?

AR226-2175 Chris E S h o op 08/08/2001 05:23 PM _____________________________ To: Debbie J Mulrooney/AE/DuPont@DuPont cc: Robert L Ritchey/CL/DuPont@DuPont, M.

AR226-2282 t iTM -, Debbie J Mulrooney 05/03/2002 03:23 PM To: D JRO BERTS@ m ail.dep,state.w v.us cc: Bernard J Reiliy/AE/DuPont@DuPonL Robert F Pinchot/DEV/AE/DuPont@DoPont Subject Little Hocking Receptor Grid Dave, In our meeting in Charleston last w eek you asked if 1could provide to you the receptor grid that I used for modeling deposition in the Little Hocking watershed (as shown in Figure 3 in our draft report).

AR226-2301 fiy-J* Charles J Zarzecki 02/21/2003 01:43 PM To: Catherine A Barton/AE/DuPont ce: Subject: Snapshot Results Cathie, The snapshot resuts: 0.477 ug/m3 at the same property line receptor as before.

FLUogo foLH'hBtS Item 10: Monitoring - Fluoropolymers EPA Data Needs: (Draft 9-21-03) Data Need Manufacturing Releases LOI Commitment Data on releases to air, water, wastewater, landfill leachate Additional data EPA Proposal to Address Data Needs needs beyond LOI Manufacturing none Information on release of PFOA to air, water, wastewater, landfill leachate from manufacturing facilities Continued monitoring of releases Manufacturing Sites Concentration of PFOA in air, surface water, groundwater, soil, biota, wastewater, landfill leachate at manufacturing facilities Surface water, groundwater, wastewater, landfill leachate concentrations at manufacturing sites Limited biota data Modeling of PFOA in air Monitored concentrations of PFOA in air, soil, additional biota Screening level monitoring of PFOA in air to quantify concentration and extent Screening level monitoring of PFOA in biota (eg, fish and other aquatic species, plants, herbivores, avian, terrestrial species) at manufacturing facilities AR226-2341 EXP000280 - 1- EXP0QQ281 Item 10: Monitoring - Fluoropolymers EPA Data Needs: (Draft 9-21-03) Data Nee Off Site f om Manufaci itring Concentra ion of PFOA in i ir, surface wi ter, groundwa er, soil, and biota lown gradient fi om manufacti ing facilities LOI Commitment PFOA concentrations in surface water and groundwater from manufacturing sites Additional data needs beyond LOI Monitored concentrations of PFOA in air, soil, additional biota Limited biota data Modeling of air contamination EPA Proposal to Address Data Needs Monitoring of PFOA in air to quantify concentration and extent of off site contamination Additional groundwater monitoring, similar to Washington Works, to quantify PFOA in groundwater offsite contamination at additional manufacturing sites.

AR226-2367 Fi!

AR226-2390 INTEROFFICE MEMORANDUM Date: 4-May-1987 02:09pm EST From: TONY PLAYTIS playtis Dept: TEFTECH Tel No: 2775 TO: ROGER ZIPFEL < ZIPFEL ) Subject: C8 in Water by t hTlhoL d-fn"ilf owti^riwd re" sultsT hh.avdei cbteieon nrecUeiviet d <rbfyt hpheonte; t a . ie0t. 4terp pwbi. ll follow Sample Washington Works drinking -fountain, B3 Powell's General Store, Washington WV Lubeck Pennzoil, Lubeck WV Mason's Village Market, Little Hocking OH S12 20th Street, Vienna WV BBb_Ci <0.4 1.3 1. <0.4 <0.4 JZ009211 N EID136975

AR226-2448 INTEROFFICE MEMORANDUM Date: From: Dept: Tel No: 16-Sep*1997 03:07pm Gregory A Chapman CHAPMAGA Fluoroproducts 304-863-2535 TO: See Below Subject: Action Items from 9/16 C-8 Sampling Meeting 1.

AR226-2453 ORGANICS ANALYSIS DATA SHEET laboratory Name : CH2M h i u .

AR226-2457 WWK FC-143 RESULTS DATESMPL SRCNAME ANALYTE RSLTMOD IRESULT PQL UNIT 22-Nov-91 LOWER POND 22-Nov-91 UPPER POND 27-Dec-91 LOWER POND 27-Dee-91 UPPER POND 15-Mar-94 LMW-2A 15-M ar-94.LMW-5B 15-Mar-94 LOWER POND 15-Mar-94 STREAM MN RD 15-Mar-94 UPPER POND 20Sep-94 LMW-2A 20-Sep-94 LMW-5B 20-Sep-94 LOWER POND 20-Sep"94 STREAM MN RD 2-Apr-96 001 POND OUTLET 2-Apr-96 002 POND OUTLET 2-Apr96 003 POND OUTLET 2-Apr-9e2-Apr-96 MWBG OUTFALL 004 2-Apr-96 OUTFALL 005 2~Apr-96 STREAM 1 2-Apr-96 STREAM 2 2-Apr-96 W IL L 331 2-Apr-96 WELL 336 9-Apr~96 DWNSTREAM 9-Apr-96 OUTLET 9-Apr-96 PROPBOUND 10-Apr-96 FBLK 10-Apr-96 MW-12 10-Apr96 MW-S 10*Apr-96 MW12A 10-Apr-96 MW13A 1Q-Apr-96 MW13A PC-143 FC-143 FC-143 FC-143 FC-143 FC-143 FC-143 FC-143 FC-143 FC-143 FC-143 FC-143 FC-143 FC-143 FC-143 FC-143 FC-143 FC-143 FC-143 FC-143 FC-143 FC-143 FC-143 FC-143 FC-143 FC-143 FC-143 FC-143 FC-143 FC-143 FC-143 FC-143 1 0J9 1.3 4.1 260 1200 730 0.5 4400 270 530 2200 0.9 61 72 20 < 0.1 13 39 7.2 14 0.52 0.48 25 86 9.9 < 0,1 < 0.1 0.97 < 0.1 11 8,2 MG/L MG/L MG/L MG/L ug/t ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l 4 UG/L 4 UG/L 2 UG/L 0.1 UG/L 1 UG/L 2.5 UG/L 0.5 UG/L 1 UG/L 0.1 UG/L 0,1 UG/L 3 UG/L 20 UG/L 0.5 UG/L 0,1 UG/L 0.1 UG/L 0.1 UG/L 0.1 UG/L 1 UG/L 1 UG/L DATESMPL SRONAME ANALYTE RSLTMOD RESULT PQL UNIT 10-Apr-96 MW14 10-Apr-96 MW6A 11-Apr-96 FBLK 11-Apr-96 MW-4 11-Apr-96 MW-6 11-Apr-96 MW-9 11-Apr-96 WEST WELL 17-Apr96 FBLK 17-Apr-96 LMW-1 17-Apr-96 LMW-2A 17-Apr-96 LMW-7 17-Apr-96 LMW-8 FC-143 FC-143 FC-143 FC-143 FC-143 , FC-143 FC-143 FC-143 FC-143 FC-143 FC-143 FC-143 < 0.1 0.19 < 0.1 39 15 0.14 3,7 < 0.1 1700 460 15 2200 0.1 UG/L 0.1 UG/L 0.1 UG/L 5 UG/L 2 UG/L 0.1 UG/L 0.5 UG/L 0.1 UG/L 200 UG/L 50 UG/L 2.5 UG/L 200 UG/L 66& .00M D EXD072360 17-Apr-96 LOWER POND FC-143 17-Apr-96 RT 33 STREAM SAMP FC-143 17-Apr-96 UPPER POND FC-143 18-Apr-96 MW-AJP FC-143 18-Apr-96 MW-MGM FC-143 18-Apr-96 MW-TWW FC-143 29-May-97 LOCAL LANDFILL W.

AR226-2556 June 23, 2000 Dr.