AR226-2653 AR226-2653 ISC Modeling Methodology and Results Introduction This report summarizes dispersion modeling that was completed for the DuPont Washington Works facility to demonstrate that the emission limits included in Permit Application 1823C for the Thermal Converter complies with the C-8 assessment of toxicity (CAT) recommended airborne screening level o f 1.0 ug/m3 at the property line fence.

HECYCLEO Ol Ol AR226-2665 en RESEARCH Precise Research.

AR226-2695 AR226-2695 Biodegradability of Telomer-Based Polymeric Products 1.

3-2j' DuPont-12966 TRADE SECRET Study Title H-25777: Inhalation Approximate Lethal Concentration (ALC) in Rats A uthor: David P.

M6_ I- 28 000235 DuPont Company Chambers Works PFOA in Blood -^ Chambers Works PFOA Recycle ntaawwasslPffdshauoaeannsoerbaoemvmtriddttausoeorePbn1kprp2c3rrr1eFe9aetall04ti0eoi9rotOnls0nros0srn9eady0g.AsrewolmpeuyatiwbwaTpaafsnhbpprlrbtb4haldootyrsley-l.2isii.oyrunsa2waascdwPlpg0WlqosocoahF0msuoncoonbuyiO0oorangndfologkrnduebnAtturkniehrtllaeelbceaiirdoeintftwdstrecnooieobseePtwvwrardadedwyliFtsosanoeoimcsOalhnhbdgrorvioetaokogeoAle2cmcdetrncndtva0eoaoroRepbmioc0stnwtdloa.eotele0lcepurreeviDtrceedtyowanicnyahnnduittluicgtheetgautPnhtrlshnedinoaeaoceicmresnatthianepte,irnlghPomadetyrtitheonnFcnazhg1fpecsyynOcibo9aeanelcas9allroiuAgeseollgs9tcesydffsweebn.f,hsrttepsleslihebreidottccrnoceiShassoaotne3ymthsiaalcCdvgce0comnlceaeeallhwsishipitnvlpn1naanosieeeee0lmbcmeggmeoadsl0lrrssbnuspbppaari.plddlwsetrlepooeeipotreBsohsifosesbcdutfnytrlsfdreWf.hloeooootswssessouAmpsartuoada.in<ecnWpmtrlnrohtdlak1mAphadlnpso0aotteyeaohtlo0sfsrlserzrnehorteaoadtsepschiictormldtn,puwitseooipgrmg.bnspanoreesieti.lsndnbarorBenedaeamwconsgrcatlbh,ocitashWpohiba1youespolnn9ulletnttcoillhsui9hstneedcorer9iecsekisbnetoonts1gldelacfoat9brdnufohbooo9odcuaoud9rttlthenpdd rTaenhloiiasthbelexerpmdearetitaehnaoctdethtlheeadltoDwwuoPlueolvdnetblsteoimnwwoorrhekicswehniwtshietaivwdeeiafrfenedirneptnertorecvsoitdneedtr.amcot raensaclyietinctaiflilcaablloyraatcocruyroatne and J) December 9,2004 Barbara J.

- 3V- 7 A R .& Z6 - }lf 1 ORGANIC FLUOROCQMP PONDS IK BLOOD In May, 1978/ 3M informed Du Pont of findings of organic fluorocompounds in blood of employees exposed to long-chain perfliioro-surface active materials. 3M reported airborne contaminant levels up to 81 ppm in their operations and organic fluorine blood levels of 1 to 71 ppm for exposed workers. 3M reports that some level of organic fluorine in humans is normal/ i.e. equal to or less than 1 ppm.

AR226-3650 Attachment A 000003 " > r4,~ V ANALYTICAL REPORT ST LT R E N T STL Denver 4 9 5 5 Yarrow Street Arvada, CO 8 0 0 0 2 Tel: 30 3 7 3 6 0 1 0 0 Fax: 3 0 3 4 3 1 7171 w w w .stl-inc.com PFOA Analysis Lot#: D6A270318 Dale VanDeVelde GE Plastics State Route 892 DuPont Road PO Box 68 Washington, WV 26181 Severn Trent Laboratories, Inc.

'3/ Qb J f-y*oc-3l5~ Garfield water Department Client Sample ID: Gli B U M D C D PARX PUKP STATION HPLC Lot-Sample fi... ; D8C060309-001 Work Order f . : KH51C1AA Date Sampled__ : 03/05/08 09:00 Date Received..: 03/06/08 Prep Date..... : 03/10/08 Analysis Date..: 03/12/08 Prep Batch ff___: 8070135 Analysis Time..: 22:21 Dilution Pactor: 1 Method DEN -LC-0012 Matrix PARAMETER PROS PFOA RESULT 0 .0 2 1 0.038 REPORTING LIMIT UNITS 0.010 ug/L 0.015 ug/L SURROGATE 13C4 PFOA 13C4 PFOS PERCENT RECOVERY 67 41 * RECOVERY LIMITS (50 - 200) (50 - 200) BOIB(S): ________________ * Sum m it recovery ti outtide rated conirot lmiti

Analytical Report Fluorochemical Characterization of Aqueous Samples Decatur Outfall 001 FC Monitoring (E03-0326) Exygen Research Laboratory Report No.

y)R 6 _ 0930 TSCA NCIC Notification Form for CBI Documents ElVED Docket Number: _ ft I?

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From: To: CC: Sent: Subject: Attachments: Yaroschak, Paul J DOD @ ERD-VA Mcnease, Gee Hyun CIV DLA LOGISTICS OPERATIONS (US); PIRIR, J R (ROBBIE) CIV DLA LOGISTICS OPERATIONS (US); Werner, Nanette C CIV (US); Nelson, Bruce E CIV DLA LOGISTICS OPERATIONS (US); Kivimaki, Kevin W CIV DLA INSTALLATION SUPPORT (US); Martin, Donald A (Don) CIV DLA INSTALLATION SUPPORT (US); Klingel, Richard T CIV DLA DISPOSITION SERVICES (US); Schneider, Steven W CIV DLA DISPOSITION SERVICES (US); Reed, James L CIV DLA LOGISTICS OPERATIONS (US); Farmer, William M CIV DLA LOGISTICS OPERATIONS (US); Hoenscheid, W Joseph CTR DLA INSTALLATION SUPPORT (US); Anderson, Patti J CIV (US); Mach, Richard CIV OASN (EI&E), ODASN (Environment); Rudroff, Jim CIV OASN (EI&E), ODASN Environment; Berkoski, Daniel T CIV NAVSEA, SEA 05; MATLOCK, KEVIN W GS-13 USAF AFCEC AFCEC/CXF; Kowalczyk, Daniel F CTR USAF SAF-IE (US); Fletcher, Steven G CIV NAVSEA HQ, SEA 05; Hunstad, Mary P CIV NAVSEA HQ, SEA 05; Coghlan, Gunarti H CIV NAVFAC HQ, ENV; Fisher, Adriane CIV OASN (EI&E), Infrastructure and B; Mchugh, Morgan H CTR USARMY HQDA ASA IEE (US); Ramsdell, Richard C CIV USARMY HQDA ASA IEE (US); Tesner, John; Durham, Robert W CIV USARMY HQDA ACSIM (US) Deborah Morefield ; Alexandria Long ; Bowers, Terry L CIV OSD OUSD ATL (US); Miller, Edmund D CIV OSD OUSD ATL (US); John Seibert (john.f.seibert.civ@mail.mil); Cummings, Laurie A CTR OSD OUSD ATL (US); Kelly Scanlon (GWU); Tricia Underwood ; Andrew Rak (Noblis); Cathy Vogel (Noblis) 7/7/2016 1:03:05 PM 22 June AFFF Meeting Minutes AFFF 22 June Meeting minutes_final.docx Colleagues: Attached are the minutes from the 22 June AFFF meeting with Component comments incorporated.

From: To: CC: Sent: Subject: Attachments: Berkoski, Daniel T CIV NAVSEA, SEA 05 Hunstad, Mary P CIV NAVSEA HQ, SEA 05 Fletcher, Steven G CIV NSWCCD PHIL, PA 12/1/2014 1:36:01 PM DoD F&ES AFFF brief DoD F&ES AFFF update 12-3-14.pptx V/r, Dan Berkoski, P.E.

From: To: CC: Sent: Subject: Attachments: Fletcher, Steven G CIV NAVSEA HQ, SEA 05 John Farley (john.farley@nrl.navy.mil) Berkoski, Daniel T CIV NAVSEA, SEA 05; Hunstad, Mary P CIV NAVSEA HQ, SEA 05 12/15/2016 5:32:07 PM FW: GAO 100947 FOLLOW-UP DRINKING WATER GAO 100947 FOLLOW-UP QUESTIONS rev3.docx Need to talk about this with you ASAP. v/r, Steve Fletcher, P.E.