PHOTODEGRADATION EFT7-2 TEST SUBSTANCE Identity: Perfluorooctanesulfonate; FC-95. (1-Octanesulfonic may acid, also be referred to as PFOS or 1,1,2,2,3,3,4,4,5,5,6,6.7.7.8,8.8- heptadecafluoro-, potassium salt, CAS # 2795-39-3) Remarks: Testing is in progress. 00211 PHOTODEGRADATION TEST SUBSTANCE Identity: PFeCr-f9l5u.or(o1oc-tOacnteasnuelsfuolnfaotnei;c macaiyd,a1l,s1o,2b,e2.r3e,f3e,r4r,e4d,5t,o5a.s6,P6.F7.O7S.8o.r88heptadecafluoro-, potassium salt, CAS # 2795-39-3) Remarks field: The test substance is a white powder.

: 5p AR 226 _ 10] MR U2 "Toxicology and Descriptive Biology Key Elements Acute Toxicity Data Exists x Repeated Dose Toxicity x Developmental Toxicity x Key Findings Ei - a2 Low to moderate toxicity: oral/dermal/inhalation Irritation potential defined Not a sensitizer Oral/dermal/inhalation rodent/non-rodent Liver primary target organ Potency defined Oral/inhalation rat/rabbit = = s 3% ~~ = Z- 58 8 Fetus not more sensitive than maternal Nanootmaaslsioecsiated with structural - "nntain NO CBI | Toxicology and Descriptive Biology Key Elements Reproductive Toxicity Genetic Toxicity Ecotoxicity - Acute Data Exists - x x Key Findings Reproductive organs not a target Functional reproduction not defined Point mutation - Ames negative Chromosomal effects- in vivo, in vitro - negative Not a genotoxic agent .

AR 226 _ 1194 Document 10 of 20 ` COMPILATION OF HISTORICAL C-8 DATA DUPONT WASHINGTON WORKS MAIN PLANT AND LANDFILLS : am } CONTAIN NC CRI 000492 EID168057 * JABLEOFGONTENTS ~~ 11.21 DC-O8CHUiMStEONriOcaTlGLAaIbZOATOatNO.r.y.A.R.A.I.S.S.I....oer rvec neoere1-11-1 13 PhysicochemicalDataforAmmoniumPer{luorooctanoate (C-8)............1-2 14 RERCTCNCES.rr " emma 20 Washinglon WOrkS Main PION... 21 Introduction.d......

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AR226-2145 TO : FBOM: GABY L BEBBICGE B.

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AR226-2327 Air Emissions Modeling Plan Air dispersion modeling will be performed to calculate ambient ground-level air concentrations ofC8 emissions from the Chambers Works site.

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Hydrogen-ready lubricants from MOLYKOTE Lubricants for applications dealing with hydrogen to ensure functionality, even after long-term exposure MOLYKOTE Specialty Lubricants ensure functionality of hydrogen-exposed applications Green hydrogen is likely to become the nextgeneration fuel.

AR226-2419 THE (WPLE& FOR CME IMENTAL /we c^W /QW^J /<9-/^/ a^^ili^1' FOLl-CTAI^|fi...ARE C-8/MATER RESULTS FROM CH2MHILL ON OUR PLANT MELL8, THESE SAMPLES'MERE TAKEN TO SATISFY CH2MHILL'8 NEED LITER SIZE QUANTITIES.

R22266 8.0 2 oT ARaz.g 2680 TRADESECRET StudyTile EVALUATION OF THE BIODEGRADABILITY OF USING THiEcCuLoOsSeEnD BsOToTrLE TEST Author John T.

Dear authorities in Denmark, Germany, the Netherlands, Norway, and Sweden, We are users of fluoropolymers in our production and supply customers with polytetrafluoroethylene (PTFE) woven fabric for applications in semiconductor encapsulation and insulation.

Opinions against the EU/ECHA PFAS Restriction Act Sanming Hexafluo Chemicals Co., LTD (China) Sanming Hexafluo Chemicals Co., Ltd., a manufacturer of fluorinated chemicals in China, has been committed to the R&D and production of environmental-friendly oxy-composed fluorinated chemicals, and has made certain contributions to the replacement of PFOA and PFOS.

Regulation 61 sampling locations No specific location identified on AGCCE Permit, potential locations identified below.