AR226-2682 4 AR226-2682 C-8 BIODEGRADATION IN ----GROUND WATER---- Andrew Hartten Dave Ellis May 7, 1998 GEOLOGICAL CROSS SECT SAMPLING LOCATIONS SITE CONCEPTUAL MODEL Source Areas Former anaerobic digestion pond (sludges removed) C-8 up to 614 mg/kg @ 8 - 10 foo Ground water at 309 SITE CONCEPTUAL MODEL Hydrogeology Sand and gravel 65-100 feet deep Yields up to 300 GPM Production wells influence GW flo Linear velocity 1 ft/day K= loo ft/ LUBECK WELL FIELD Travel time from anaerobic pond is about 5 years *& 2 ppb discharge concentration WHY STUDY C-8 DEGRADAT IN GROUND WATER?

% AR226-2817 TRADE SECRET Study Title H-24921, H-26313, and H-26225: Evaluation of the Interference of the Test Substance in the Analysis of Rat Serum Lipids AUTHOR: Denise Hoban, B.A, MLT (ASCP) STUDY COMPLETED ON: October 13, 2004 TESTING FACILITY: E.I. du Pont de Nemours and Company Haskell81^ Laboratory for Health and Environmental Sciences Elkton Road, P.O.

Copies to: E, I. du ?

FOR DU FONT USE ONLY AR226-2949 Du Pont HLO 379-90 Itl;loesf t Item) tiControl Item) Study Completed On i ; July 11, 1990 Contracting Laboratory 'Biosearch, Inc. ;3408-50 B Street Philadelphia.

AR226-2958 Laooratory Project ID "i Haskell Laboratory Report No. 333-91 tkoe5 ^ ACO^ &vef 53^^- t;o^' | Page 1 of 12 Material Tested.

AR226-3049 Study Title Approximate Lethal Dose (ALD) of H-21953 in Rats Laboratory Project ID Haskell Laboratory Report No. 795-96 Author Tracy A.

AR226-3109 FILE No. 715 02/12 '99 09:19 ID:DUPOMT JACKSON LflB RUllO 609 540 4463 ltd FEBfl-1999 CONFIDENTIAL ^Jn<<fc,hi ^0^.

AR226-3149 DuPont-3871 TRADE SECRET Study Title H-23960; In Vitro Mammalian Chromosome Aberration Test in Chinese Hamster Ovary (CHO) Cells Authors Ramadevi Gudi, Ph.D.

AR226-3206 TRADE SECRET Study Title H-24042: Biopersistence Screening 10-Dose Oral Gavage Study in Rats Supplement No. 1 Laboratory Project ID: DuPont-2931 AUTHOR: Carol Pinlay, B.A.

AR A426 - 332] 503 AR226_ 332 Dupont13830 --~ TRADE SECRET Study Title H-25425:Repeated-DoseDermal Toxicity 28-Day Study in Male Rats TesT GUIDELINES: U.S.

HASKELL LABORATORY AR226-3381 Common Name: Barium Telomer B Sulfonic Acid (Barium TBS) Chemical Name: Poly(difluoromethylene), alpha-fluoro-omega-(2-sulfoethyl)-, barium salt CAS Registry No.: None Chemical Structure: [F - (CFa - CF2)x - CH2 - 0 CH2 - S - O'h Ba4'2 0 where x = 1-10 (average of 4) Physical Properties: Form: Molecular Weight: Boiling Point: Melting Point: Specific Gravity: Vapor Pressure: Dusty White Powder Variable Recommended AEL 1 mg/m3 (8- and 12-hour TWA), skin General Toxicity Barium TBS has slight acute oral toxicity with an ALD in the rat of 2300 mg/kg (DuPont, 1988c).

Screeiiink And Alba 5/8/98 3M EnvironmentalLaboratory-FluorineAnalyficalChemis= Khs Hansen- Sr.AnalyficaClhemist FluorineAnalyticaClhemiwy Team Building2-3E-09 612-778-6018 Team Screeningof PFOS levelsin Eagles and Albatross Summary: Ten samplesofbud sem ofbirdwxa, frm fmmjwi=dc baldeagleand &a from Laym albatrossw@e receivedatthe I-ab.Ile tWe serawas collectefdrombirdsinNorth= M=esota (Isample)t,heUppa PeninsulaofMchipa (2samples)a,nd thelav= Peninsulaof Mchipn (2umples).Allfrm aftum sanwl wereobtainefdrombirdsAmd attheOff= Cb*plot an SandTt]2niwithintheMdway AwU inthenorthcenu2lPacideO=m The s= sampleswereodmcta omam wereanab-adquanttmvelyft p sumnate (]?

LabOMtDryReport InterimReport ofPrefiminaryData for 26 Week CapsuleToidcologyStudy withPFOS inCynomolgus Monkeys Laboratory Report No.

28 Day Percutaneous Absorption Study with FC-95 in Albino Rabbits Experiment No.: Conducted At: Dates Conducted: Conducted BY: Reviewed BY: dc: M.

-- .. - -- .-.-.-.-.-.-.-..- .- .-.-.-..-....- - - hi,-,lhevels)fparticulatmeatter.The Environmenta IQualityBoard of Puerto izicohas statedthatCata fio(an industrializeadrea) has a historyof exceeding @atit)naAlmbient Air QualityStandards.The Hea lthDepartment of Puerto Rict)has reportedthe highestratesof respiratoriyllnessesand alltypesof ::inccrisn thismunicipalityU.sing theEPA standardsampling methodology, 1,)tasluspended particles(TSP) and particulatmeatter of lessthan 10 @Lm @P\110)were collectedinCatafioand Fajardo(controlarea)foreach season of the year.The particulatmeatterfrom the air filterasnd from reference ,tandardmaterial(SRM 1649. urban dust)Were extractedsequentiallywith threseolventosfdifferentpolaritieussing 24-hour SoxhietextractionT.he extractsobtained were testedfor cytotoxicitoyn human keratinocytesusing the NeutralRed Bioassay (NRB).