Corporate Occupational Medicine 3M Center, Building 220-3W-05 St.

AR226-2020 DuPont Washington Works P.

AR226-2067 WASHINGTON WORKS INDUSTRIAL HYGIENE YEARLY REPORT l-0ct-1990 to 30-Sep-1991 Page 19 AREAS FLUOROCARBONS - HOMOPOLYMERS C-8/PC-143 070 C-8 RECOVERY BLDG DATES 3l-Jan-1991 NOTEBOOK; 53235,P049 DURATION 450 CONCt <0.03 MPB SAMPLE TYPE; P PERCENTAGE* 5* *> EMPLOYEE #03097 PERS CODE; 08PI C-8/FC-143 070 C-8 RECOVERY BLDG DATE* 5-Feb-1991 NOTEBOOK* 53235,P049 DURATION; 450 CONC: <0.03 MPB SAMPLE TYPE* P PERCENTAGE* 5X EMPLOYEE #03022 PERS CODE: 08PI C-8/FC-143 070 C-8 RECOVERY BLDG DATE; 15-Feb*1991 NOTEBOOKS 53235,P050 DURATION; 180 CONC: <0.03 MPB SAMPLE TYPE; A PERCENTAGE: 5X ** EMPLOYEE #00000 PERS CODE: C-8/FC-143 070 C-8 RECOVERY BLDG DATE; 25-Feb-1991 NOTEBOOK* 53235,P051 DURATIONS 450 CONC* <0.03 MPB SAMPLE TYPE* A PERCENTAGE* 5% *: EMPLOYEE #00000 PERS CODE: C-8/FC-143 070 C-8 RECOVERY BLDG DATE; 6-Mar-1991 NOTEBOOK* 53235,P052 DURATION* 450 CONC* <0.03 MPB SAMPLE TYPE* P PERCENTAGE* 51 ** EMPLOYEE #03022 PERS CODE: C-8/PC-143 070 C-8 RECOVERY BLDG DATE* ll-Mar-1991 NOTEBOOK* 53235,P052 DURATION* 450 CONC* 0,044 MPB SAMPLE TYPE; P PERCENTAGE: 8% ** EMPLOYEE #03097 PERS CODE: C-8/FC-143 070 C-8 RECOVERY BLDG DATE; 14-Mar-1991 NOTEBOOK: 53235,P053 DURATION; 450 CONC: <0.03 MPB SAMPLE TYPE: A PERCENTAGE; 5X C-8/FC-143 070 C-8 RECOVERY BLDG DATE* 25-Mar-1991 NOTEBOOK* 53235,P054 DURATION: 480 CONC; 0.141 MPB SAMPLE TYPE: A PERCENTAGE: 25* *; EMPLOYEE #00000 PERS CODE* *: EMPLOYEE #00000 PERS CODE: C-8/FC-143 071 MATERIAL HANDLER-WAREHOUSE *: DATE: 3-Apr-1991 NOTEBOOK: 53235,P055 EMPLOYEE #03964 DURATIONS 450 CONC: <0.03 MPB PERS CODE* 08PD SAMPLE TYPE* P PERCENTAGE: 5* C-8/FC-143 100 PERSONAL SAMPLE DISPERSION PAC *: DATE: 17-Jan-1991 NOTEBOOK: 53235,P046 EMPLOYEE #01591 DURATION: 420 CONC: <0.03 MPB PERS CODE: 08PH SAMPLE TYPE: P PERCENTAGE: 5* RJZ004645 EID078549 WASHINGTON WORKS INDUSTRIAL HYGIENE YEARLY REPORT l-Oct-1990 to 30-Sep-1991 l-Nov-1991 Page 20 AREAS FLUOROCARBONS - HOHPOLYMERS | C-8/PC-143 100 PERSONAL SAMPLE DISPERSION PAC *t DATEs '6-Feb-1991 NOTEBOOK: 53235,P049 EMPLOYEE #10082 DURATION; 450 CONC; <0.03 MPB PERS CODE: 08PH SAMPLE TYPE; P PERCENTAGE: 5% C-8/FC-143 100 PERSONAL SAMPLE DISPERSION PAC *s DATE: ll-Feb-1991 NOTEBOOKS 53235,P050 EMPLOYEE #10129 DURATION: 450 ONCs <0.03 MPB PERS CODE: 08PH SAMPLE TYPE: P PERCENTAGE: 5X C-8/FC-143 102 FINE POWDER DRYER OPERATOR DATE: 3-Jan-1991 NOTEBOOK: 53235,P044 DURATION: 435 CONCs <0.03 MPB SAMPLE TYPES P PERCENTAGE; 5% *i EMPLOYEE #04924 PERS CODE: 08PI C-8/FC-143 102 FINE POWDER DRYER OPERATOR DATE: 10-Jan-1991 NOTEBOOK: 53235,P045 DURATIONS 450 CONC: 0.047 MPB SAMPLE TYPE: P PERCENTAGES BX EMPLOYEE #10082 PERS CODE: 08PI C-8/FC-143 102 FINE POWDER DRYER OPERATOR DATE: 28-Jan-1991 NOTEBOOK: 53235,P047 DURATION: 465 CONC: 0.140 MPB SAMPLE TYPE: A PERCENTAGE: 25% *: EMPLOYEE #00000 PERS CODE: C-8/FC-143 102 FINE POWDER DRYER OPERATOR DATE: 4~Feb~1991 NOTEBOOK: 53235,P049 DURATION: 450 CONC: 0.105 MPB SAMPLE TYPE: P PERCENTAGE; 191 *: EMPLOYEE #04931 PERS CODE: 08PI C-8/FC-143 102 FINE POWDER DRYER OPERATOR DATE: 15-Feb-1991 NOTBBOOK: 53235,P050 DURATION: 450 CONC: <0.03 MPB SAMPLE TYPE: P PERCENTAGE: 5X EMPLOYEE #10044 PERS CODE: 08PI C-8/FC-143 102 FINE POWDER DRYER OPERATOR DATE: 28-Feb-1991 NOTEBOOK: 53235,P052 DURATION: 450 CONC: <0.03 MPB SAMPLE TYPE: P PERCENTAGE; 5% *: EMPLOYEE #03964 PERS CODE; 08PI C-8/PC-143 102 FINE POWDER DRYER OPERATOR DATEs 3-Mar-1991 NOTEBOOK!

AR226-2426 jV '' AGREEMENTS REACHED 11/6 MEETING SUBMIT WAIVER - SECTION 4,5,4 - LINERS (SWMR) PARAGRAPH 5.5.3a.A.

AR226-2550 D uP ont W ashington W orks RCRA Facility Investigation Results Review Oct. 28,1999 IIDX56232 1 Proposed Agenda Introductions Site Background Site Hydrogeology RFI Scope of Work RFI Results Conclusions and Recommendations Wrap-Up EID156233 Desired Meeting Outcomes * To familiarize the EPA project team with the Washington Works site physical setting To share the results obtained from the recently completed RCRA Facility Investigation * To provide perspective on the RFI results To propose a path forward that will ensure continued protection of human health and the environment ...._______ ______ IID 156234 Main Messages for Today: The DuPont Washington Works site is well characterized and well understood, as a result of over 10 years of investigation and monitoring.

AR226-3037 Study Tille Eye Irritation Test with H-21460 in Rabbits Laboratory Project ID Haskell Laboratory Report No. 82-96 Author Tracy A.

t DuPont Haskell Laboratory AR226-3372 January 9,1997 HAZARD CHARACTERIZATION FOR HUMAN HEALTH C8EXPOSURE CAS REGISTRY NO. 3825-26-1 Prepared by: LSe. nBi.oBr Rieegseela,rPchh.DTo. xicologist 1 HAZARD CHARCAACSTREREGIZIASTTRIOYNNFOO.R38H2U5-M26A-1N HEALTH C8 EXPOSURE .

CLIENT PRIVATE AR3X-0ia PROTOCOL TITLE: Metabolism of T-6292, T-6293, T-6294, and T-6295 by Rat and Human Hepatocytes SRI Study No.

H- NOTOX Safety & Environmental Research B.V.

AfU ^-c^ CHRONIC TOXICITY TO EARLY LIFE STAGE OF FISH TEST SUBSTANCE Identity: Perfluorooctanesulfonate; may also be referred to as PFOS or FC-95. (1-Octanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,77,8,8,8heptadecafluoro-, potassium salt, CAS #2795-39-3) Remarks field: The test substance is a white powder.

/Iftfc-OSIH ACTIVATED SLUDGE RESPIRATION INHIBITION TEST SUBSTANCE Identity: Perfluorooctanoic add, ammonium salt; may also be referred to as PFOA ammonium salt, Ammonium perfluorooctanoate, PFO, FC-116, FC-126, FC-169, FC-143, or as a major component of FX-1003.

Ad slug - 0707 BIODEGRADATION (BOD/COD) TEST SUBSTANCE Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-201F-X. (1Octanesulfonic acid) (CAS # 2795-39-3).

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AR226-1735 PFOS: A DIETARY LC50 STUDY WITH THE MALLARD WILDLIFE INTERNATIONAL LTD.

AR0U'OM3 C O R N IN G Hazleton MUTAGENICITY TEST WITH // ^ '< A \ T-6342 i \* IN THE SALMONELLA - ESCHERICHIA COI//MAMMALIAN-MICRSOME REVERSE MUTATION ASSAY ir-- - ^ FINAL REPORT AUTHOR Timothy E.