. - all documents related to physical, telephone or video communications and meetings (including diary entries, notes, minutes, correspondence produced before and after the communications and meetings) between DBIT (including the secretary of state, ministers, under secretaries, and senior officials(perm secs and DG's) and the organisations listed below since June 2023 to the present date: Major companies: AGC F2 Koura Dupont 3M Chemours Honeywell Solvay National trade associations Chemical Industries Association British Coatings Federation European Fluorocarbons Technical Committee / Cefic Sector Group Plastics Europe Clarification - Please could you reduce the scope as you suggest so that it covers Permanent Secretaries and Director Generals?

ORIGINAL DOCS NOT CONTAIN CBI 3 3 9 ^ 2 -0 October 29, 2010 DuPont Haskell Global Centers for Health and Environmental Sciences 1090 Elkton Road, P.O.

AR226-3342 Bill Berti DuPont Central Research & Development Wilmington, Delaware USA Ths mif'Qcies a/seiencs" BiNing W a n g aDaryl Cobranchi aBarbara Larsen aBogden Szostek BMary Kaiser John Gannon Bob Buck gLisa Sulecki Pat Folsom aMark Starr aChien-Ping Kao gChristopher Bowers aVIadimir Capka OutSSne Background a Intermediates and Products Overview of E-fate studies Physical-Chemical Properties a Water solubility and Vapor Pressure ^ 6-2TBI, 8-2TBI, 6-2TBA, 8-2TBA B Measured vs.

DuPONT Confidential 200 250 300 Temperature oC 9/5/97 350 Page 1 C00076 n H o MODERN COATING TOWERS Countercurrent Flow Each Zone or Direct Impingement Slot Dryers or i Radiant Heat:-- Separate Exhausts Each Zone CAUTION: KEEP AIR VELOCITIES LOW TO AVOID FABRIC FLUTTER AND EXCESS P~" -Q S)ntor 370"C lo 420*C Alternate: Air Cushion Rolls P' I Bake 200*C la31b"C Dry 30'C to 100"C 0 O Pk 1I I < it it t t r I I t I > I bf W b Accumulator Optional: Multiple Rolls in Dip Tank FIGURE 2 FIGURE 3

Thiebaud English Translation of Report Summary for DuPont Chemical Solutions Enterprise 27-Jan-OS aespEssr TECHNICAL SUMMARY Determination effected using of growth inhibition of Pseudomonas putida bacteria b^_ the operating procedure described in proposed standard ISO/DIS 1_07_12__(fffdoc 118AfnorT90B).

Associate members are DuPont, Gujarat Fluorochemicals and Honeywell.

A236 - 3283 465 TRADE SECRET ARAR6 ~3283 Dupont 12091 Study Tite H-25767R:aiSntabtoiw, TArcouutte,,O9n6c-oHrohuyrncShcruesemnyiknigsTsest with AUTHORS:RoBbarebrrtaAD..

o The draft permit requires that DuPont submit a revised report/plan within 30 days of receipt of BPA's disapproval letter.

Records Retention ' All raw data and the final report will be stored in the archives of Haskell Laboratory for Toxi ology and Industrial Medicine, Newark, Delaware, or in the DuPont Hall of Records, E.

Actual 3M Production Significant Reduction in Emissions 3M Emissions < 21 tonnes (46,950 lbs)/yr New US Capacity Emissions < 0.5 tonnes (1000 lbs)/yr ' 98% Reduction Significant Reduction in Alternative Uses 3M non-Fluoropolymer industry global sales - 6 tonnes (12,500 lbs )/yr New US Capacity non-Fluoropolymer industry sales - Zero Possible Sources of Exposure Non-Fluoropolymer Products 3M exiting production and marketing Dyneon will not market APFO Dupont and Daikin announced they will only sell APFO to "experienced and responsible users" in the Fluoropolymers industry. 6 tonnes (12,500 Lbs)/yr (3M global sales) > ZERO Possible Sources of Exposure Blank Slide CBI Redacted Blank Slide CBI Redacted Possible Sources of Exposure Dispersion Fluoropolymers Voluntary material balance request did not provide adequate information Will facilitate material balance Developing communications package Developing testing protocol Goal to complete material balance by December 2002 12> Blank Slide CBI Redacted Possible Sources of Exposure PFOA Impurities in POSF Related Materials Some POSF related products had PFOA impurities at low levels Recent 3M study shows correlation between PFOS and PFOA levels in human blood Possible Sources of Exposure Potential Transformation to PFOA Sulfonate based - 3M stops production 3M study shows perfluorosulfonamide derivatives may be transformed abiotically to PFOA Telomer based - TRP plan previously communicated to EPA Possible Sources of Exposure 98% Reduction EnEvxiproonsumreent OA liOmpSf^aFt^etriae!

AR226-2551 EID121902 RCRA Facility Investigatioii Results Review March 14,2001 6 L U I0HSV i Introductions Site Background Site Hydrogeology RFI Scope of Work RFI Results Conclusions and Recommendations Wrap-Up 0 8 2 1 1OHSV EID121903 r WToasfahminiglitaornizWe tohrekEs sPiAte/pWhyVsiDcaElPsepttrionjgect team with the cToomsphlaerteedthReCreRsuAltFsaocbiltiatyinIendvefrsotimgatthioenrecently To provide perspective on the RFI results pTrootpercotpioonseoaf hpuamthafnorhweaalrtdhtahnadt wthiell eennvsuirroencmoenntitnued ISntOHSV EID121904 coThvhaeerraD1c0tuePyrieozanerdtsWoanfadisnhwvineesgllttiuognnadtWieornostraoknosdds,mitaeosinsaitwroeersilunl lgt.of caTnohdnettrchooelmpebrnoivngiarroatimnomneeonnfstuIRfrreMopmsroastnietdectStihoWenMaocfUtihvsu.emsiaten hhyedarltahulic DseiftfueePchotyivndetrnainuetsleiscngdcoosinntotgrocfoloprnwrtoiangrudrea.mtoaancdtivmeloynoitpoerriatste the Z8ZII0HSV EID121905 # # M1,2a0n0ufaaccrteusrionngObehgioanRiinve1r9i4n8'western WV Engineering Polymers, Fluoroproducts, and P6dP Engineering plastics (Delrin) - Nylon pellets and filaments (Zytel) - Acrylic resins and molding compounds - Polyvinyl butyral (Butacite) - Teflon & Tefzel Approx. 2,400 employees (DuPont's 2nd largest) C821I0HSV EID121906 WEI IOHSV EID121907 ASI lOU 285 IIM 21908 -1 bI1n9yv8Ee9sP-tiAgCaRotireorgenico(tinVvIIe)IAIorfcet6qiouSniWroinMrg"UVHseSrWifiAca"tipoenrmit issued 1991 and 1992 - Conducted VI MIRnFjaeIrccwthioo1nr9kW9p7lea-lnlEs fProeArmfcooovumerdSmWferonMmteUdcsoo(nnLsViodcIearlaanLtidFonr&e)quired 1998 and 1999 - Conducted RFI 98UI0HSV EID121909 Riverbank Landfill Anaerobic Digestion Ponds Polyacetal Waste Incinerator sntO H S V EID12I910 SWMU LOCATIONS h EID121911 SSCI I0HSV SWMU LOCATIONS Operated from 1948 to mid-1960s Measured 4,500 feet long by 150 feet wide Friivlleerdflsoteoedpplsalionpe separating main plant terrace from Filled with general plant solid waste Closed by covering with soil, vegetation, and rip-rap Today the RBL is densely vegetated Mtcroeenatcthmeyrlenenn-tenscyohswltoemrcidoentsreoellpedwabsytchoellmecatiinonaraenadof 68Z110HSV IID1219X2 ?

Part of PlasticsEurope, the group's members are 3M, AGC, Arkema, Chemours, Daikin Chemicals, DuPont, Gujarat Fluorochemicals, Honeywell, W.

Submitted by: Qingqing Hu Emial:qingqing.hu@dongyuechem.com Submission Date: August 22, 2023 Polytetrafluoroethylene is known as the "plastic king", the father of fluorine resin Roy Plunkett in 1936 in the United States DuPont Company research and development.

C-8 found in blood of DuPont workers, Workers with blood c-8 found to have normal liver function, Birth defects scare - additional sampling.

AR226-2700 AR226-2700 TORONTO WORKSHOP MATERIALS Septem ber 13-14,2004 ) A n (E-Tate (Perspective John Gannon DuPont Central Research & Development, Wilmington, DE M B fe I | The miracles o f scien ce] 1 isiderations for Thou What is the Source of PFCA's in the Environment?