AR226-2069 WASHINGTON WORKS INDUSTRIAL HYGIENE REPORT FROM 1--Jan-1988 TO 3i-Qct-i99i 31-Oct-1991 Page 1 AREAS FLUOROCARBONS - HOMOPOLYMERS CHEMICAL SAMPLE LOCATION *:CONTROL C--8/FC--143 10E FINE POWDER DRYER OPERATOR DATEs lE-Apr-1988 NOTEBOOK!

AR226-2271 ' ' Debbie J Mutrooney " 04/04/2002 01:17 PM To: Robert F Pinchot/DEV/AE/DuPont@DuPont cc: Bernard J Reilly/AE/DuPont@DuPont Subject: Deposition Results and Modeling Report |i| Rob, Here are the deposition results for the 2003 em issions for Little Hocking and Lake Washington: W atershed D eposition R e su lts - 2003 Em issio Also, here is the final m odeling report: F in a l M odeling Report.di RP026414 E ID 5 8 2 6 0 7

Daikin America Decatur Plant Monitoring January 15, 2004 AR226-2353 EXPQ00161 v*_-/ Daikin America Decatur Plant Monitoring Background Air modeling Surface water/sludge Groundwater/soil Next steps EXP000162 Figure A2.

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Me thod : uKB/OO -tOOOOOO .USKRb^JUb'.srtILEXZJDt'2Eu00o Component: ET-C8 Date: IO-SEP-1991 14:47:07.30 Quadratic fit KO: 1.5256E-03 Kl: 1.9351E+00 K2: -5.8485E-01 Inter nal standar d SO o e f f . of determination: l.QOuo AR226-2416 Standard Sample STD v n STD X 1.5 STD X 1 STD X 0.3 STD X 0.1 Corapone nt Area 17683b5 1366427 949132 493292 101357 Btandar-d Area 2147347 2121692 2121968 2098421 2121787 Component Hass 2.0000 1.5000 1.0000 0.50000 0.10000 Standard Mass 4.0000 4.0000 4.0000 4.0000 4.0000 Standard Sample STD X 2 STD X 1.5 STD X I STD X 0.5 STD X 0.1 Area Ratio 0.82351 0.64403 0.44731 0.23746 4.805E-02 Mass Ratio 0.50000 0.37500 0.25000 0.12500 2.5000E-2

AR226-2468 AIQY ^ 123 08 /2 9/0 0 07:54 0 : 0 2 /0 2 NO:125 - 8- n Y RUN LANDBLL piiMMARYOP FC-M31^JjAl2glCAIJ^ SULi a .

AIQY 123 H xm rntan ^OMoiaMma AR226-2497 08/31/01 1 1 :0 1 0 :0 2 /13 N 0:1S0 MW &-j' Tl> x i'-'-'' . . . _ * * jn ir r '- ir t August 22,2001 SU rS v'1> *" Ms.

^Precise Research. \ Proven Results AR226-2501 Analytical Report Fluorochemical Characterization of Water Samples DuPont Washington Works Exygen Resareh Laboratory Report No. 008-046B {Revision 1) Testing Laboratory .

AR226-2541 RESPONSE TO INFORMATION REQUESTED REGARDING APRIL 1992 VI REPORT (REFERENCE; EPA REGION III LETTER DATED MAT 5, 1997) DUPONT WASHINGTON WORKS WVD045875291 Responses to information requested in the referenced EPA letter are presented below.

RECYCLED cn AR226-2617 2003-DuET-??

1anraster Laboratories 2 4 2 5 N e w Holland Pike * Lancaster, PA 1 7 601 AR226-2726 Analysis #0813FC - Revision 01 Supersedes Date: None Effective Date: 0 3 2001 Page 1 of 11 Extraction of Low Level FC-143 in Water and Wastewater Reference: Low Level Determination of FC-143 in Water, CH2M Hill, Inc., Oc Cross Reference: The following procedure is cross-referenced in this docun enL SOP-OE-001, "Glassware Cleaning for O r g a n i Scope: This method is designed to extract bC -U o lamrffbnium perfluorooctanoate) from water.

AR226-2832 HASKELLLABOR A TO R YFQ R TOXICOLOGY ANpINDUSTRIALMEDICINE Company Sanitized.

AR226-2866 Copies E.

Study Sponsor: Issue Date: Document Reference No.: ATOCHEM 2-Nov-87 98797 AR226-2933 Acute Toxicity to Daphnia Magna Author(s): A.M.

TRADE SECRET DuPont HL-1997-00735 AR226-3077 Study Title H-22762: Eye Irritation Test in Rabbits Laboratory Project ED: HL-1997-00735 Author: Carol Finlay, B.A.