ESTABU& NlDiaO?

2 -4 7 REV t-6C ESTAtUSKCO 1*02 E.

WASHINGTON WORKS TEFLON DIVISION (V/ & ; -AZ2ri(,i$ CC: T.

BIOSEARCH INCORPORATED P O- B O * B5* 8 ' PHILADELPHIA.

AP AA6 - O?

A k SLA6 _ <3?

FOR DUPONT USE ONLY AR226-2791 Approximate Lethal Concentration of Haskell Laboratory Report No. 276-85 MR No Haskeli E.

FOR DU PONT USE ONLY AR226-2938 Du Pont HLR 55-89 Study Title Statib Acute 96-Hour 1050* of to Fathead!

4r.

EFFECT OF DEGRADATION TEST SUBSTANCE ON FOAMING Identity:A mixturecontainingperfluorooctanesulfonatweh,ich may alsobe referredtoas PFOS, FC-95, or as a component of FC-206 or L3243. (1-Octanesulfoniacid)(CAS # 2795-39-3).

THIRD DRAFT l'C - 1 4 3 U e c a i u r Standby Prcut Statement April 15, 1981 Lowell Luilford (3-613A) HOLD FOR RLLLASi: '\vs.A \~o \ I IO y \ ^ ,\VV l', V K l A V- Vv i tH Iiiiiiaiilii]; /jy~, IS81 As a p r e c a u t i o n a r y m e a s u r e , a p p r o x i m a t e l y 25 women o f c h i l d b e a r i n g p o t e n t i a l h a v e r e c e i v e d j o b r e a s s i g n m e n t s a t t h e 3M D e c . i t u r p l a n t t h i s week so they w i l l not be exposed to a type of fluorochom ical th a t can cause birth defects in ra ts.

AR - 0757 TO XICITY TO AQUATIC PLANTS TEST SUBSTANCE_______________________________________________ Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-203CE. (1Octanesulfonic acid) (CAS # 2795-39-3).

AR 826 _ 084] BIODEGRADATION (BOD/COD) TEST SUBSTANCE Identity: A mixture containing perfiuorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-602. (1Octanesulfonic acid) (CAS# 2795-39-3).

- A T-2253 "AL ORIGINAL ARG -- 0965 w*ihUKEH, - 0800 - 37> anaAabtTseiorerspAutedimoDniinsiatnsdrtirBbaiutotitioronannosfafnoKdr-mEEtalhtiyimloinnFaOotfSiEoN-n-IEAotCfhCyialncbFOoeSneE-d14 Sanaary 19, 1983 gel 0 uo lh Conducted Att During: Conducted By: R3ikeCrentLearboratories, Inc.

AR226-2064 WASHINGTON WORKS INDUSTRIAL- HYGIENE REPORT FROM 1-Jan-1988 TO Sl-Oct-I'm AREAs FLUOROCARBONS - COPOLYMER8 Sl-Oct-lWl Page I CHEMICAL SAMPLE LOCATION ft;CONTROL C-8/FC-143 216 PERSONAL SAMPLE-WET FINISHING s DATEs ll-Apr-1988 NOTEBOOK; 31841,Pia5 EMPLOYEE 4K451E DURATIONS 0390 CONCs 0.116 MPB PERS CODEs SAMPLE TYPES P PERCENTAGE; El% C-8/FC-143 216 PERSONAL SAMPLE-WET FINISHING 8 DATE; lB-Apr-1988 NOTEBOOKS 31E41 ,P1S8 EMPLOYEE #04304 DURATION!