6 -- D&S5 ACTIVATED SLUDGE RESPIRATION INHIBITION TEST TEST SUBSTANCE_______________________________________________ Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-603EF. (1Octanesulfonic acid) (CAS # 2795-39-3).

M AA& - oz S 3 MICROBIOS MICROTOX TOXICITY TEST TE$T_SUB.STANCE_______________________________________ _ Identity: Mixture containing perfluorooctanesulfonate which may also be referred to as PFOS, FC-95, or as a component of FC-3003. (1Octanesulfonic acid) (CAS # 2795-39-3).

A k 2.36 - 0 3 o S ACTIVATED SLUDGE RESPIRATION INHIBITION TEST TEST SUBSTANCE Identity: Mixture containing Perfluorooctanesulfonate; may also be referred to as PFOS, FC-95, or as a component of FC-3072. (1Octanesulfonic acid) (CAS # 2795-39-3).

fisKZ-ZG , IO Z f 9 C r - 3 a / ~ / i7 $ * 4 < K DuPont Haskell Laboratory for Toxicology and Industrial Medicine Elkton Road, P. 0.

fif 2 .6 _ 1 / ^ 3 JULY 2002 SURFACE WATER MONITORING REPORT FOR WASHINGTON WORKS FACILITY AND LOCAL, LETART AND DRY RUN LANDFILLS WASHINGTON, WV Date: September 2002 Project No.: D6WW7423.01 18983635.20000 CORPORATE REMEDIATION GROUP An Alliance between DuPont and URS Diamond Barley Mill Plaza, Building 27 Wilmington, Delaware 19805 Surface water Monitoring Report Table of Contents TABLE OF CONTENTS 1.0 Introduction...................................................................................................................1 2.0 C-8 Analytical Reporting.............................................................................................2 3.0 Washington WorksFacility..........................................................................................3 4.0 Local Landfill............................................................................................................... 4 5.0 Letart Landfill.............................................................................................................. 5 6.0 Dry Run Landfill.......................................................................................................... 6 7.0 References.................................................................................................................... 7 Table 1.0 Table 2.0 Table 3.0 Table 4.0 Figure 1.0 Figure 1.1 Figure 1.2 Figure 2.0 Figure 2.1 Figure 2.2 Figure 3.0 Figure 3.1 Figure 3.2 Figure 4.0 Figure 4.1 Figure 4.2 TABLES C-8 in Surface Water - Washington Works Facility C-8 in Surface Water - Local Landfill C-8 in Surface Water - Letart Landfill C-8 in Surface Water - Dry Run Landfill FIGURES Site Location Map - Washington Works Facility Surface Water Sample Location Map - Washington Works Facility C-8 Concentration Map July 2002 - Washington Works Facility Surface Water Site Location Map - Local Landfill Surface Water Sample Location Map - Local Landfill C-8 Concentration Map July 2002 - Local Landfill Outfalls Site Location Map - Letart Landfill Surface Water Sample Location Map - Letart Landfill C-8 Concentration Map July 2002 - Letart Landfill Outfalls Site Location Map - Dry Run Surface Water Sample Location Map - Dry Run Landfill C-8 Concentration Map July 2002 - Dry Run Landfill Outfalls JULGMR.doc Sep. 17. 02 Wilmington, DE 000444 Surface water Monitoring Report Table of Contents Appendix A Appendix B Appendix C Appendix D Appendix E Appendix F Appendix G Appendix H APPENDICES Laboratory Analytical Data Reports - Washington Works Facility Chain-of-Custody Records - Washington Works Facility Laboratory Analytical Data Reports - Local Landfill Chain-of-Custody Records - Local Landfill Laboratory Analytical Data Reports - Letart Landfill Chain-of-Custody Records - Letart Landfill Laboratory Analytical Data Reports - Dry Run Landfill Chain-of-Custody Records - Dry Run Landfill JULGMR.doc Sep. 17. 02 Wilmington, DE 060445 ii Surface water Monitoring Report Introduction 1.0 INTRODUCTION A multi-media consent order (Order No.

Northwest Bioanalytical M6 - ' O y Study No.

J rf 3M Katherine E.

M SIA 6- ntM-2 STUDY OF MYOCARDIAL INFARCTION AT WASHINGTON WORKS PLANT This study was conducted to evaluate the incidence of cases of myocardial infarction among male wage and salary roll employees at the Washington Works Plant from 1956 to 1973.

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TEFLON FINE POWDER/DISPERS ION OPERATORS C-8 BLOOD SAMPLE RESULTS /(*lO C-8 in Blood (ppm) First Sample Second Sample Change 26.0 20.0 -6.0 24.0 25.0 +1.0 11.0 8.2 -2.8 9.4 7.9 -1.5 8.2 6.5 -1.7 7.0 7.7 +0.7 6.9 5.9 - 1.0 5.6 4.2 -1.4 4.4 4.9 +0.5 4.3 5.6 +1.3 3.9 3.6 -0.3 3.6 2.7 -0.9 3.5 2.1 -1.4 2.9 2.8 -0.1 2.8 2.8 0.0 CM o 2.6 2.4 2.5 1.8 -0.7 2.5 2.5 0.0 2.1 1.6 -0.5 1.6 1.5 - 0.1 1.5 1.2 -0.3 1.3 1.1 -0.2 JWR:ldr/10/19/83 Days Between Samples 363 364 391 364 363 364 337 334 365 401 364 362 363 357 365 391 336 349 288 384 366 362 000246 % Per Year Change -23 +4 -24 -16 -21 +10 -16 -27 +13 +27 -8 -25 -40 -3 0 -7 -28 0 -30 -6 -20 -15 EID079746 TEFLON FEP OPERATORS C-8 BLOOD SAMPLE RESULTS C-8 in Blood (ppm) First Sample Second Sample Change 7.5 6.6 -.9 4.5 3.7 -.8 3.1 2.8 -.3 2.1 1.5 - .6 1.8 1.1 -.7 1.8 1.6 -.2 1.6 1.4 -.2 1.25 1.20 -.05 1.20 1.00 -.2 0.95 0.79 -.16 0.86 0.75 -.11 0.75 0.72 -.03 0.52 0.44 -.08 0.51 0.42 0.41 0.48 0.39 0.46 -.03 -.03 + .05 0.38 0.36 -.02 Days Between Samples 362 380 384 364 364 392 393 171 333 391 565 364 365 337 445 363 363 % Per Year Change -12 -17 -9 -29 -39 -10 -12 -9 -18 -7 -8 -4 -15 -6 -6 +12 -5 JWR:ldr/10/19/83 V 00024V EID079747 SHORT SERVICE OPERATORS C-8 BLOOD SAMPLE RESULTS Fine Powder Last Sample PPM .02 .19 .93 4.00 Days in Job 61 212 375 603 PPM Per Year Change + .09 +.24 + .03 -.18 FEP .05 .05 .15 .23 .66 o U1 95 124 135 165 492 266 + .15 + .10 +.38 + .09 + .24 -.24 JWR:ldr 10/19/83 00248 EID079748 NEW HIRES - TEFLON Date of First Sample 07/28/81 10/01/81 10/07/81 10/13/81 Date Hired 07/27/81 08/03/81 04/20/81 04/20/81 C-8 Blood Level (ppm) <0.007 0.009 0.007 0.015 Months on Plant Before First C-8 Blood Test 0 2 5 1/2 5 3/4 AJP002380 JWR: Idr 10/19/83 000ZA9 EID079749

A | U 2- 0 3 ^ ACUTE TOXICITY TO AQUATIC INVERTEBRATES (E.G.

PFOA Attachments to Letter to C.

ARm-oM7^ J u n r 20, 197H BLOOD LEVELS O F R F /F IN SELEC TED EM PLO Y EES: SnawlfdtteipBchhonoanoxuaerueietcodvtntmpbigdtheioedhtojlilerabseneinuesfmttcuhcennesluicitaturrpeg,iritrsndnsmosetewbohg(,errsi5filiianovnotn)owinhctocisnohefsdluaohvaduoefdtfbeet1w.ldi(rfedmurjm96aiyeerhci7)omdtO2ciaee6wircs0cttooouuas(wnowno1purclypen)enrtohopepeteksttsoelrladrursboeyskmoooretbenir,teesfldbdhgsjgisdrecl,udaoe.sae.tcanacreiogt(rnglitnos2csntsdapE)ow,t.o,niheacnflsoias(raclr(tch3Brdfao4iahbk)ooc)msceofrverettclsuermpetusauaaxwscl,roputbetepyhirroitsjmdtriiohoneehrnnssresxciyeegeucutofilotmaglrewfffedwu(lelscRitusoeo.

f t RjUCt O50< ACUTE TOXICITY TO FISH TEST SUBSTANCE Identity: Perfluorooctanoic acid; may also be referred to as PFOA, FC26, or FX-1001.

3M General Offices 3M Center St.