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RECEIVED PFOS Ecotoxicological Testing Results OPlfyffQpprison of Effect Concentrations Calculated Using Different Sample Purity M H M rr^an {n fasured concentrations, except where * (nominal).

$X )ltrO % t Analytical Laboratory RepSotrutdoyn PTritelseence and Concentration of Potassium Perfluorooctanesulfonate in Serum and Liver of Sprague-Dawley Rats Exposed to PFOS via Gavage REPORT AMENDMENT NO. 1 Am1e9nAdpmrieln2t00D0ate: Performing Laboratory 3M Environmental Technology & Safety Services 3M Environmental Laboratory 935 Bush Avenue St.

AfleLoLQ ,, 060/ TSCA NCIC Notification Form for CBI Documents Docket Number: Fri?

AR226-2092 IndustrDiaaltHa ygiene AR226-2092 TestResults Sample Date Range Concentration Range Action Level Industrial Hygiene 1/1199 12/31/99 100% Sample Dt Sample# Duration Type Employee Name BTO: 08 TEFLON LOG: Q45 BLDG. 162ROOF-GENERAL m m goss 255 A 8/17/99 916S 360 A 8/17/99 9168 360 A 8/10/99 9167 360 A 11/399 9267 300 A Pete Chemical C-a/FC-143 C-8/FC-143 C-8/FC-143 C-8/FC-143 C-3/FC-I43 BTO: 08 TEFLON LOC: 048 B-162 OUTSIDE SMOKING AREA - 2ND LEVEL 1/25/99 8581 390 A 4/12/99 8888 360 A 4/14/59 8692 360 A 7/13/99 9104 360 A 11/3/99 9268 380 A 12/15/99 9318 360 A C-8/FC-143 C-a/FC-143 C-8/FC-143 C-8/FC-143 C-8/FC-143 C-6/FC-143 BTO: 08 TEFLON LOC !

AR226-2615 AR226-2615 Draft This report was not issued as shown, but was incorporated into larger Chambers W orks report under the Consent Order.

AR226-2735 TRADE SECRET Study Title eval USING uation of th THE MODIFIED eCS-T8bUioRMd e grad TEST a b il it (OECD yo 301 f B) Author John T.

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fi 416 H-24516: Subchronic Toxicity 90-Day Gavage Study in Rats with One-Generation Reproduction Evaluations R & l _ $ 2 3 1 / .

M M 6 - }ZU-f H-24678: Subchronic Toxicity 90-Day Oral Gavage Study in Rats ___________________ ________ ________________________DuPont-6554 TRADE SECRET Study Title H-24678: Subchronic Toxicity 90-Day Oral Gavage Study in Rats Volume 3 of 4 Laboratory Project ID: DuPont-6554 Test Guidelines: U.S.

grtorf - iw if AMM- 3t* H-24678: Subchronic Toxicity 90-Day Oral Gavage Study in Rats_________________________________________________________ DuPont-6554 TRADE SECRET Study Title H-24678: Subchronic Toxicity 90-Day Oral Gavage Study in Rats Volume 4 of 4 Laboratory Project ID: DuPont-6554 Test Guidelines: U.S.

"<MmccCcrreeaa,@Dteabftolarwah.c"om> 08/04/2010 02:03 PM 3 2 <\l Ainu- JTScj To NCIC OPPT@EPA cc "Bilott, Robert A."

TSCA NCIC Notification Form for CB!

AR226-2043 To: Roger J Zipfel/AE/DuPont@DuPorrtI Partick J Cavanagh/CL/DuPont@DuPont cc: Jack L Offenberger/AE/DuPont@DuPont, Anthony J Playtis/CL/DuPont@DuPont Subject: Special C-8 Results, 6/8/99 Results o f the nonroutine C-8 testing you requested: Recovery Building Roof 0 .54 mpb Smoking Area pump failure - no result Inside Recovery Building 1.15 mpb Roof Outside Monomer CR 0.31 mpb Recovery Building CR field blank 0.07 mpb < 0 ,0 5 mpb Samples were taken 1:25 to 5:40 PM, 6/8/99.

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