A R 2 2 J6 -O I* 4 ATTACHMENT TO LETTER TO C.

3 \I General Offices 3M Center St.

TOXICITY TO AQUATIC PLANTS (Freshwater Diatom, Navicula pelliculosa) TEST SUBSTANCE Identity: Perfluorooctanesulfonate; may also be referred to as PFOS or FC-95. (1-Octanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8heptadecafluoro-, potassium salt, CAS # 2795-39-3) Remarks: Sample obtained from 3M production lot number 217.

< Larry R.

Attachments to Letter to C.

f January 30, 2002 NAME A fL z - z , _ io s~ y - FLUOROPOLYMER MANUFACTURERS GROUP MEETING ORGANIZATION TELEPHONE # 2:00-4:00 PM E-MAIL dO ON .NiVlNQQ o w m Itic A VWNO- C \n .A U 3 _______ L v| i W Vipy;' 7 ' 7> & Pf\ / o p p r /?

3M Specialty Materials 3M Center St.

* NORTHERN KENTUCKY OFFICE SUITE 340 1717 DIXIE HIGHWAY COVINGTON, KENTUCKY 41011-4704 606-331-2838 513-381-2838 FAX: 513-381-6613 Robert A.

fiR RR & _ tb&o SRPTT-7(/ MIN 314/022208 PERFLUOROOCTANESULFONYL FLUOORRIDE (PO SF) BACTERIAL REVERSE MUTATION TEST Sponsor 3M Center 3M Corporate Toxicology Building 220-2E-02 St Paul MN 55133-3220 USA Research Laboratory Huntingdon Life Sciences Ltd.

Report E01-1256 PFOS: A Reproduction Study with the Mallard AR226-1743 Study Title Analytical Phase Report for PFOS: A Reproduction Study with the Mallard Data Requirement FI FRA Subdivision E, Section 71-4 OECD Guideline 206 Author Lisa A.

AR226-2108 Industrial Hygiene Sample Date Range Concentration Range Action Level 1/1/81 100% 12/31/81 Sample Dt Sample# Duration Type Employee Name STO: m TECHNICAL LOC: 411 BLDG. 163 LAB GENERALAREA 9/11/81 48665 Z 9/22/B1 48666 Z 9/23/81 48657 Z 9/23/81 48668 9/25/81 48669 10/12/81 48660 Z Z Z 10/14/81 48661 Z 10/19/81 48662 12/1/81 48663 12/1/81 48664 Z z z Pera Chemical C-8/FC-143 C-8/FC-143 C-8/FC-143 C-8/FC-143 C-8/FC-143 C-8/FC-143 C-8/FC-143 C-8/FC-143 C-8/FC-143 C-8/FC-143 BTO: OB LOC: 7D1 TEFLON FINE POWDER DRYER-EASTSIDE #2 7/30/81 62679 Z 7/30/81 62680 z 9/26/81 62681 z 10/9/81 62682 z 10/9/81 62683 z 10/9/81 62684 z 10/20/81 62685 z 10/20/81 62686 z 10/20/81 62687 z 10/27/81 62688 z 10/28/81 62689 z 10/28/81 62690 z 10/30/81 62681 z 10/31/81 62692 z 10/31/81 62693 z 11/1/81 62694 z 11/4/81 62695 z 11/4/81 62696 z 11/4/81 62697 z Tuesday, January 16,2001 11:47:40 AM C-8/FC-143 C-8/FC-143 C-8/FC-143 C-8/FC-143 C-8/FC-143 C-8/FC-143 C-8/FC-143 C-8/FC-143 C-8/FC-143 C-6/FC-143 C-8/FC-143 C-8/FC-143 C-8/FC-143 C-8/FC-143 C-8/FC-143 C-8/FC-143 C-8/FC-143 C-8/FC-143 C-8/FC-143 Cone Unit Percent 0.15 MPB 0.06 MPB <0.03 MPB 0.03 MPB 0.03 MPB 0.04 MPB 0.1 MPB 0.14 MPB 0.03 MPB 0.03 MPB 26.8% 10.7% 5.4% 5.4% 5.4% 7.1% 17.9% 25.0% 5.4% 5.4% 096 MPB 1.18 MPB 2S3 MPB 0.67 MPB 0.36 MPB 0.68 MPB 4.31 MPB 1,48 MPB 1.13 MPB 0.69 MPB 0.27 MPB 0.1B MPB 1.91 MPB 2.91 MPB 1.25 MPB 0.31 MPB 0.69 MPB 0.31 MPB 0.41 MPB 171.4%** 210.7%** 461.8%** 119.6%** 64.3% 121.4%** 769.6%** 264/3%** 201.8%** 123.2% ** 48.2% 32.1% 341.1%** 519.6%** 223.2%** 55.4% 123.2%** 55.4% 73.2% Page 1 of3l AJP004045 E ID 1 1 3 1 8 0 Sample Dt Sample# Duration Type Employee Name 11/11/81 62688 11/13/81 62609 11/16/81 62700 11/16/31 62701 11/19/81 62702 11/20/81 62703 11/20/81 62704 12/9/81 62705 12/9/81 62706 12/9/81 62707 12/20/81 62708 12/22/81 62709 12/28/81 62710 12/29/81 62711 Z z z z z z z z z z z z z Z Fere Chemical C-8/FC-143 C-8/FC-143 C-8/FC-143 C-S/FC-143 C-S/FC-143 C-8/FC-143 C-8/FC-143 C-8/FC-143 C-B/FC-143 C-8/FC-143 C-8/FC-143 C-8/FC-143 C-8/FC-143 C-8/FC-143 BTO: 08 TEFLON LOG: 702 FINEPOWDER DRYER CONTROL ROOM (ALSO SEETTF031 9/21/81 57258 z C-B/FC-143 9/23/81 57259 z C-8/FC-143 9/24/81 57260 z C-8/FC-143 9/27/81 57261 z C-B/FC-143 9/27/81 57262 z \ C-S/FC-143 9/30/81 57263 z C-8/FC-143 9/30/81 57264 z C-8/FC-143 9/30(81 57265 z C-8/FC-143 10/19/81 57266 z C-8/FC-143 11/9/81 57267 z C-8/FC-143 11/9/81 57268 z CB/FC-143 11/9/81 57269 z C-S/FC-143 11/11/81 57270 z C-S/FC-143 11/12/81 57271 z C-B/FC-143 11/12/81 57272 z C-S/FC-143 11/12/81 57273 11/18/81 57274 z z C-S/FC-143 C-S/FC-143 11/18/81 57275 z C-8/FC-143 11/16/81 57276 z C-8/FC-143 11/19/81 57277 z C-S/FC-143 12/2/81 57278 z C-8/FC-143 12/14/81 57279 z C-S/FC-143 Tuesday, January 16,2001 11:47:40 AM Cone unit 0.77 MPB 3.18 MPB 0.87 MPB 0.93 MPB 1.06 MPB 4.54 MPB 3.93 MPB 216 MPB 1.02 MPB 1.21 MPB 2.69 MPB 1.42 MPB 0.55 MPB 3.05 MPB percent 137.5%** 567.9%** 1732%** 166.1%** 189.3%** 810.7%** 701.8%** 385.7%** 1821%** 216.1%** 480.4%** 253.6%** 90.2% 544.6%** 0.12 MPB 1.64 MPB 1,04 MPB 4.6 MPB 0.47 MPB 0.46 MPB 1.00 MPB 0.46 MPB 0.13 MPB 0.7 MPB 0.06 MPB 054 MPB 3.01 MPB 0.68 MPB 0.57 MPB 0.52 MPB 0.65 MPB 1.33 MPB 1.18 MPB 0.07 MPB 0.12 MPB 024 MPB 21.4% 292.9%** 185.7% ** 821.4%** 83.9% 821% 183.9%** 821% 232% 125.0%** 100.0%** 96.4% 537.5% " 117.9%** 101.8%** 92.9% 116.1%** .237.5%** 210.7%** 125% 21.4% 429% Page 2 of31 AJP04046 E I D l13181 Sam ple D t Sam p le# Duration Type Em ployee Nam e 12/21/81 57280 12/21/31 67281 12/21/81 57282 12/22/81 57283 12/28/81 57284 Z Z Z Z Z BTO : 08 l,OC: 703 TEFLON FINE POWDER PACKOUT ROOM 8/25/31 31236 P 922/81 49740 Z 10/2/81 49741 Z BTO: OB TEFLON LOC : 704 A/S-FINE POWDER C-8 WEIGH HOOD 12/3/81 51474 Z 12/14/81 51475 Z 12/28/81 51476 Z.

AR226-2153 btty' l- * !

AR226-2300 fi Charles J Zarzecki 02/21/2003 1230 PM To: Catherine A Barton/AE/DuPont co: Subject: Actual 2002 Results C a th y, The maximum annual prediction fo r actual 2002 emissions is 1.36 ug/m3, occurring at the plant property fine.

AR226-2316 y Charles J Zarzecki ' 03/20/2003 08:08 A M To: Catherine A Barton/AE/DuPont cc: Subject R e lookee what I found 0 .

AR226-2356 S tev e W illiam s" <steve.w illiam s@ epa.state.oh.us> on 01/27/2004 10:17:55 AM To: Andrew S Hartten/AE/DuPont@ DuPont cc: 'Michael Preston* <mlchael.preston@ epa.state.oh.us> Subject: Re: Draft Surface Soil Procedure Andrew, I looked over the draft soil/biota sampling procedure and have a few questions/comments.