/ jR X tt-O '' BIODEGRADATION (BOD/CODfTOC) TEST SUBSTANCE Identity: Perfluorooctanesulfonylamido(ethyl)acetate; may also be referred to as PFOSAA, FC-128 or as the major component of FC-127 or FC-129.

ARnt- ACUTE TOXICITY TO FISH (FATHEAD MINNOW) TEST SUBSTANCE Identity: e2rFPet9Cehf9er-yf11rllr-u2-eN5o7d1-r,[o-(tF7oho)Cecatp-as1tna2Ped9Fse,OucFlaSfCofAl-nu1Ayo0,lra9oFm,oCFcid-tC1yo-l2()1es80tuh9olyf-roXl)anasyoclrte]h-Rt,ea1ptem9o;0taa4mjso.asriy(ucGomalmlyscsopianolbetn,e,eCNnAt-Sof# Remarks: The test sample is FC-129 referred to by the test laboratory as R1904.

A R m - 0 H6f| Attachments to Letter to C.

'he -` Oeeiei'ie t H i e /jienM iu A < lu. 1 12 b v 1 ; A ' - i-,; bNcvicr Seif net Publishers B V All nnhis reserved <XI()5-27(i<l/9;/S(jyiXl B13ALIP 54011 N 'C ;-- a " ': --p--s A.-,..-*-: -'-I The mechanism underlying the hypolipmie effect of perfluorooctanoic acid (PFOA), perfluorooctane sulphonic acid (PFOSA) and clofibric acid Bente Haughom and 0ystein Spydevold Institute o f Medical Biochemistry, Universi!}

3M General Offices 3M Center St.

Atm,-m i INTEROFFICE MEMORANDUM Date: From: Dept: Tel No: 08-Apr-1998 02:34pm DAVID E.

PFOS: A DIETARY LC50 STUDY WITH THE MALLARD WILDLIFE INTERNATIONAL LTD.

AR226-1998 TRENDS IN C-8 IN AIR LEVELS FEE Area (Composite Avg.) .1980 C-8 T n Air' (mpb) AEL 0.56 1981 1982 1983 1.87 0.32 Not Calculated 0,15 FEE Wet Finishing Operator 0.95 0.30 FEE - No, 1 Clean Boom No. 2 Clean Boom 6;80 3.11 Fine Powder Dryer Operator 1.40 0.56 Fine Powder Dryer Boom (Composite Avg.) 3.00 2.47 0.09 3.54 0.15 0.37 0.11 0.19 0.06 0.23 JWR:ldr 10/19/83 AJP003476 EID077033

I AR226-2215 EID294840 il Vapor Scavenging Coeffioent Liquid Precipitation Frozen Precipitation C8 Particle Density 2.2 o/cm8 3 .0 -s .o 1.0 *3.0 0.5* 1.0 0.3 - 0.5 0.1 -0.3 f 1 |Lpif ill 13b ilia ifir li _ ' a te is based on testing conducted at the Washington Works site in September, 1996. 6 Particulate scavenging coefficients for liquid precipitation are from Figure 1*111nthe EPA ISC Users Guide (Volume II). 6According to Section 1.4 of the EPA ISC Users Guide (Volume II), the scavenging rate coefficients for frozen precipitation are expected to be reduced to about 1/3 of the values In Figure 1*11. 7.0% 12.5% 6.8% 31.5% 42.2% 5.5% 20,0% 0.25% 8.25% 66.0% 0.75% 1.75% 3.5% 25.0% 69.0% o;o% 16.5% 3.5% 42.0% 38.0%

\ AR226-2383 S C-S SAPLING (MARCH - JUNE 1984) .- LOCATION PKSBG-HOME TAP WW-DRINK FTN DIST.

OEPA/DuPont Off-site Water Sampling Review ^ ;:.i .. i: ' - s -" '' -' " ' :.: i;: ' ,'*. ..- ' ...

FOR D PONT USE ONLY AR226-2902 E.

FOR DU PONT USE ONLY AR226-2947 Ou Font (HR 127*90 ' r'.

AR226-2960 DU PONT USE ONLY Study Title STATIC, ACUTE, 48- AND 64-HOUR EC50 0 Du Pont HLR 457-91 [TO Daphnia magna Organisation for Economic Co-Operation and Development (OECD) Guideline for'fes ting Chemicals: 202 Author Kevin N.

AR226-3050 Study Title Skin Irritation Test with K-21946 in Rabbits Laboratory Project ID Haskell Laboratory Report No. 784-96 Authpr Tracy A.