.

ACUTE TOXICITY TO FISH TEST SUBSTANCE Identity: PreefrefrlrueodrotoocatsanPeFsuOlSfAonAy,laFmCi-do1(2e8thoyr)aascetthaetem;ajmoarycoalmspoobneent of F[(Ch-e1p2t7ad,ecFaCf-i1uo2r9o,ocFtCy-l)1s0u9l,foonrylFlC--,1p09o-tXa.ssi(uGmlyscailnt,e,CNA-Set#hy2l9-9N-1- 51-7) aRemmiaxtrukrse:of 8T6h%etteessttssuabmsptlaencies FaCn-d12184.

|5 | TEEGHXGEPSOSEUAFRNFEDECTG1S0ROOW7TF5H.0C3AONNTDOINNSUHUOARUTVSICVHAAAQLBUIEOLOIFUTSYFROYF OF FATHEAD MINNOW (Pimephales promelas)

B pp Ese ' ici M6 AR226 - 0627 | | 3M Fluorochemical Initiative Environmental Program .

AR 426 -- 0717 ACUTE AQUATIC TOXICITY IESTSUBSTANC 000E 000 Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-203. (1- Octanesulfonic acid) (CAS # 2795-39-3).

AR 226 - 0862 BIODEGRADATION (BOD/COD) TEST SUBSTANCE Identity: A mixture containing perfluorooctanesulfonate, which may also be referredto as PFOS, FC-95, or as a component of FC-603F. (1Octanesulfonic acid) (CAS # 2795-39-3).

vo NOTE TO FILE - OPPTS 50639 AR 226 _ 0946 Vy DATE: October 23, 2000 FROM: Karen Lannon SUBJECT: Revised PFOS Hazard Assessment ---- e-- ee ----re-------- by these changes.

coma cu aL mgomn mres SeEl E Ress er seirnogsienro 50p.

48226-1155 ACUTE TOXICITY TO BLUEGILL SUNFISH TEST SUBSTANCE Identity: Perfluorooctanesulfonate; may also be referred to as PFOS or FhCe-p9t5a.dec(a1f-lOucotraon-,espuoltfaonsisciuamcidsa,lt1,,1G,A2,S2,#3,237,64.54.,359,-53,6),6,7,7.8,8,8- Remarks: The test substance uncharacterized purity.

Northwest Bioanalytical Study No.

1 RESEARCH Precise Research.

7p.

AR226-2147 INTEROFFICE HEMORAKDuH TO: J.

AR226-2209 ^ Roger J Zipfel 11/02/2001 04:23 PM To: cc: Subject: Debbie J Mulrooney/AE/DuPont@DuPont Info on C-8 density Debbie, attached is the msds for C-8 in the powder form.

AR226-2233 Vapor Scavenging Coefficient Estimation Vapor scavenging coefficients are used to estimate the rate of removal of a soluble species that exists below the cloud line based on rain event characteristics, such as intensity and droplet size.