NORTHERN KENTUCKY OFFICE SUITE 340 1717 DIXIE HIGHWAY COVINGTON KENTUCKY 41011-4704 606*331*2838 513-381*2830 FAX 513-381-6613 TAFT, STETTINIUS & HOLLISTER LLP 425 WALNUT STREET, SUITE 1800 CINCINNATI, OHIO 45202-3957 513-381-2838 FAX: 513-381-0205 www.taftlaw com llj> CLEVELAND OHIO OFFICE 3500 BP TOWER 200 PUBLIC SQUARE CLEVELAND OHIO 44114-2302 216-241-2838 FAX 216-241-3707 COLUMBUS OHIO OFFICE 2* EAST STATE STREET COLUMBUS OHIO 43215^221 14-22* -2338 FAX 614-22 *-2007 Robert a .

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AR226-1519 30 September 2003 To: Mary F.

POLYMER PRODUCTS DEPARTMENT MANUFACTURING DIVISION AR226-2008 TO: J.

AR226-2122 file:///C|/WINDOWS/TEMP/C-8-FC-143 SP 9-2-81 in n i 3-8-VZ.fttm 't Test Results Sam ple Date R ange C oncentration R ange Action te v e l Industrial Hygiene 9/2/81 3/8/92 100% Sam ple Dt S am ple# ' D uration Type Employee Name Pere BTO: 08 TEFLON@ tO C : 704 AIS - FINE POWDER C-B WEIGH HOOD 4/29/87 34976 331 S Chemical Cone Unit P ercen t C-8/FC-143 0.148 MPB 26.4% BTO : tO C : 08 TEFLON@ 706 FINE POWDER DRYER #3 3/18/91 43734 390 S 3/18/91 43735 390 S 3/18/91 43736 3/18/91 43737 390 S 390 S 3/22/91 43738 390 S 3/22/91 43739 3/22/91 43740 390 S 390 S 3/22/91 43741 3/22/91 43742 3/22/91 43743 3/22/91 43744 390 S 390 S 390 s 390 s BTO : 08 TEFLON@ C-8/FC-143 >6.0 MPB 1071.4% C-8/FC-143 >6.0 MPB 1071.4% C-8/FC-143 0.152 MPB 27.1% C-8/FC-143 >6.0 MPB 1071.4% C-8/FC-143 >6.0 MPB 1071.4% C-8/FC-143 1,693 MPB 302.3% C-8/FC-143 >6.0 MPB 1071.4% C-8/FC-143 0.097 MPB 17.3% C-8/FC-143 0.187 MPB 33.4% C-8/FC-143 0.79 MPB 141.1% C-8/FC-143 0.134 MPB 23.9% A1P006220 8/9/2001 5:02 PM E ID 139462 TestRssults LOG: 720 INJECTION PUMP AREA 4/29/87 39691 330 S 3/8/92 44892 430 S file:WC1WIND0WS/TEMP/O8-FC-143 SP 9-2-81 thru 3-8-92.htm C-8/FC-143 0.279 MPB 49.8% C-8/FC-143 0.34 MPB 60.7% BTO : LOG ; 08 TEFLON 728 WAX ROOM -B -1 6 2 -1ST FLOOR 1/28/90 42843 480 S C-8/FC-143 >4.0 MPB 714.3% " BTO : 18 TEFLON COPOLYMERS LOG : 297 SPECIAL FEP SAMPLES 9/2/81 61628 S 9/2/81 61629 S 0/2/81 61630 9/3/81 61631 9/3/81 61632 9/3/81 61633 S s s s Thursday, August 09,2001 1:57:10 PM C-8/FC-143 0.11 MPB 19.6% C-8/FC-143 0.04 MPB 7.1% C-6/FC-143 0.22 MPB 39.3% C-8/FC-143 0.92 MPB 164.3% C-8/FC-143 0.37 MPB 66.1% C-8/FC-143 0.33 MPB 58,9% Page 1 of 2 2 of 4 Sam ple Dt Sam ple # Duration Type Employee Name 12/15/81 61634 S 12/15/81 61635 12/15/81 61636 S s * 12/15/81 61637 S Pars chem ical C-B/FC-143 C-8/FO-143 C-8/FC-143 C-8/FC-143 Cone Unit P ercent 0.03 MPB 0.03 MPB 0.04 MPB 0.04 MPB 5.4% 5.4% 7.1% 7.1% >4 ooOKnN> tHo-1 8/9/2001 5:02 PM EID 139463 TestResults / 12/15/81 61638 12/15/81 61639 12/15/81 61640 12/15/81 61641 12/15/81 61642 12/15/81 61643 12/15/81 61644 12/15/81 61645 12/16/81 61646 12/16/81 61647 12/16/81 61648 12/16/81 61649 12/16/81 61650 12/16/81 61651 12/16/81 61652 12/16/81 61653 12/16/81 61654 12/16/81 61655 12/16/81 61656 12/16/61 61657 S s s s s s s s s s s s s 's s s s s s s BTO: 18 TEFLON COPOLYMERS LOC: 299 #1 OVEN EXHAUST 9/28/81 61612 s 3 of4 file:///C|/W INDOW S/TEM P/C-8-FC-143 SP 9-2-81 thru3-8-92.htm C-8/FC-143 0.03 MPB 5,4% C-8/FC-143 0.03 MPB 5.4% C-B/FC-143 0.07 MPB 12.5% C-8/FC-143 0.03 MPB 5.4% C-B/FC-143 0.22 MPB 39.3% C-8/FC-143 0.04 MPB 7.1% C-8/FC-143 0.04 MPB 7.1% C-B/FC-143 0.04 MPB 7.1% C-8/FC-143 0,33 MPB 58.9% C-8/FC-143 0.07 MPB 12.5% C-8/FC-143 C-B/FC-143 0.15 MPB 0.07 MPB 26.8% 12.5% C-B/FC-143 0.04 MPB 7.1% C-8/FC-143 0.04 MPB 7.1% C-8/FC-143 0.48 MPB 85.7% C-B/FC-143 0.04 MPB 7.1% C-8/FC-143 0.07 MPB 12.5% C-6/FC-143 0.15 MPB 26.8% C-8/FC-143 0.63 MPB 112.5% ** C-8/FC-143 0.29 MPB 51.8% AJP0Q6222 C-8/FC-143 4.9 MPB 875.0% ** 8/9/2001 5:02 PM EID 139464 ^TestRcswlts VssMf 9/29/81 61613 S .

AR226-2198 C h r is E Shoop 08/28/2001 04:10 P M ................_ .. . ...... _ _____ To: cc: Subject Stephen J Gissy/AE/DuPont@ DuPont ' Karl G Kronberg/AE/DuPont@DuPont, Robert I W evodau/SE/DuPont@ DuPont, Debbie J Mulrooney/AE/DuPont@DuPont, Robert F Pinchot/DEV/AE/DuPont@ DuPont Em issions Modeling for Permit Applications Steve, Karl, Bob, and I feel that we will need to have modeling data for the applications we plan to submit or have already submitted for FP, F EP , and PFA.

AR226-2557 Andrew S Harden 05/23/2001 05:21 PM Robert l Ritchey/CL/DuPont@DuPont, Alison A Crane/AE/DuPont@DuPont, George To: Woytowich/CUDuPont@DuPont cc* Subject: information on Washington Works Facility received fe today.

TRADE SECRET Study Title H-24QQ1: Biopersistence Screening 10-Dose Oral Gavage Study in Rats Laboratory Project ID: DuPont-2924 AR226-3156 DuPont-2924 Author: Carol Finlay, B.A.

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Jean B.

P-1 Taft/faZZ(e>-3 1 ^ Taft Stettinius & Hollister LLP 4 25 W alnut Street.

SEVERN TRENT LABORATORIES ANALYTICAL REPORT JOB NUMBER: 245156 Prepared For: Weston Solutions, Inc. 1400 Weston Way Building 5-2 West Chester, PA 19380-1499 Project: Confidential Decatur - FC Investigation Attention: Sue Stefanosky Date: 03/30/2006 Signature Name: Richard C.

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