AR226-2046 fct^L Roger J.Zipfel L2 10/14/99 11:57PM To: cc: Subject: Chart of High levels of C-8 on B-162 & B-124 Boots PPE FOR ROOF AREAS OH B-124 & S-152 HIGH C-8 LEVELS C-8 III AIR DMA * 3-162 LEVELS - UP TO 4.3 PPB VS. 0.56 PPB KEt* B-124 LEVELS - UP TO 2.75 PPB ALSO HAVE MtST LADEN WITH C-8 FROM EXHAUST STACK PPS REQUIREMENTS * B-162 ROOF - BaiBBa'KtrHG PROTECTXOM REQOIRED AT HIGH LOCATIONS * B-124 ROOF ~ BBEATHIMO ftMD SKIH PROTECTION BEOUIR2D FOR EXTENDED (MORE TOW 10 MIN) STAY CftUSB - HICB EMISSIONS FROM" C-8 SCRUBBEH BXHADST SCROBBER EXHAUST GENERATES HIST W HOMID OCCASIONS MIST HAS TOAM t,V!

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AR226-2384 PERSONAL & CONFIDENTIAL 6/13/B4 TO; H.

AR226-2673 63 ^S^^^1^^W^^%%^^%%!

FOR DU PONT USE ONLY Copies co AR226-2763 S, I. du Font de Nemours and Company Haskell Laboratory for Toxicology and Industrial Medicine Elkton Road, Newark, Delaware 19711 HASKELL LABORATORY REPORT NO. 291-81 Material Teeted Octanoic acid, pentadecafluoro-, ammonium salt* Hsskell No. 12,037 t OtherCodes Study Initiated/Completed ------5/20/80 - 6/17/81------ Material Submitted by G.

AR226-2833 JWW^.'

AR226-2919 FOR DU FONT USE ONLY Copies to: Haskell E.

AR226_ 3306 488 _-- --~ AR 286_ 3306 DeDumpoincs11954 TRADE SECRET Study Tide F-24768: Influence on Growth and Growth Rateofthe Green Alga Selenastrumcapricornutum TEST GUIDELINES: OECD Guideline for the TestingofChemicals Section 2: Effects on Biotic Systems, Number 201(1984) Commission Directive 92/69/EEC EEC Method C3 (1992) AUTHOR:Terry Lee Sloman, B.S.

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Summary PFOS Rat Cross-Fostering StudyNumbers:3M T-6295.13,Argus418-014 Compound & Lot: PFOS (Perfluorooctanesulfona-teL)ot 217,98.4% pure(SMD AnalyticalRequest 53030) C.A.S.

C 0 V A4t'C-E-

TOXICITY TO AQUATIC PLANTS TEST SUBSTANCE Identity:N-ethylperfluorooctanseulfonamidoethanolm;ay alsobe referredto as N-ETFOSE Alcoholor FM-3422. (1-Octanesulfonamide,N-ethyl1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluoro-N-(2-hydroxyethyl@, CAS # 1691-99-2) Remarks: Materialisan off-whitew,axy solidofuncharacterizedpurity:The limitedwater solubiliotfythismaterialprohibiteda definitive determinationofthe aquatictoxicity.

STUDY CODE: KOI-1815 ReceiptNo.

IN VITRO MICROBIOLOGICAL MUTAGENICITY OF 3M COMPANY'S COMPOUND T-3727 ASSAYS Final Report arch 1985 m By: Kathleen Moto, Midr6biologist Microbial Genetics Department and Edward S.