AR226-2668 58 AR226-2668 Particle Size Distribution ofPFOA in Ambient Air Data Summary and Analysis May 2004 Prepared for DuPont Fluoroproducts Washington Works 8480 Dupont Road Washington, WV 26181 Prepared By DuET - Reaction Engineering DuET - Environmental Engineerim SUMMARY A sampling program was conducted to evaluate the particle size distribution (PSD) ofPFOA in ambient air at the Washington Works site.

AR226-2675 ' 1 01 AR226-2675 PROJECT ANNUAL C8 SAMPLING 1997 ANNUAL C8 SAMPLING 1997 ANNUAL C8 SAMPLING 1997 ANNUAL C8 SAMPLING 1997 ANNUAL C8 SAMPLING 1997 ANNUAL C8 SAMPLING 1997 ANNUAL C8 SAMPLING 1998 ANNUAL C8 SAMPLING 1998 ANNUAL C8 SAMPLING 1998 ANNUAL C8 SAMPLING 1998 ANNUAL C8 SAMPLING 1998 ANNUAL C8 SAMPLING 1998 ANNUAL C8 SAMPLING 1998 ANNUAL C8 SAMPLING 1998 ANNUAL C8 SAMPLING 1999 ANNUAL C8 SAMPLING 1999 ANNUAL C8 SAMPLING 1999 ANNUAL C8 SAMPLING 1999 ANNUAL C8 SAMPLING 1999 ANNUAL C8 SAMPLING 1999 ANNUAL C8 SAMPLING 1999 ANNUAL C8 SAMPLING 1999 ANNUAL C8 SAMPLING 1999 ANNUAL C8 SAMPLING 1999 ANNUAL C8 SAMPLING 1999 ANNUAL C8 SAMPLING 2000 ANNUAL C8 SAMPLING 2000 ANNUAL C8 SAMPLING 2000 ANNUAL C8 SAMPLING 2000 ANNUAL C8 SAMPLING 2000 ANNUAL C8 SAMPLING 2000 ANNUAL C8 SAMPLING 2000 ANNUAL C8 SAMPLING 2000 ANNUAL C8 SAMPLING 2001 ANNUAL C8 SAMPLING 2001 ANNUAL C8 SAMPLING 2001 ANNUAL C8 SAMPLING 2001 ANNUAL C8 SAMPLING-1996 ANNUAL C8 SAMPLING-1996 ANNUAL C8 SAMPLING-1996 ANNUAL C8 SAMPLING-1996 ANNUAL C8 SAMPLING-1996 ANNUAL C8 SAMPLING-1996 ANNUAL C8 SAMPLING-1996 ANNUAL C8 SAMPLING-1996 SRCNAME OUTFALL 004 OUTFALL 005 OUTLET 001 OUTLET 002 OUTLET 003 STREAM 1 MW-10 MW-4 MW-6 MW-9 OUTFALL 004 OUTFALL 005 OUTLET 101 STREAM 2 MW-10 MW-4 MW-6 MW-9 OUTFALL 004 OUTFALL 004 OUTFALL 005 OUTFALL 005 OUTLET 101 R-2 STREAM 2 EQUIPMENT BLANKS MW-4 MW-6 MW-9 OUTFALL 004 OUTFALL 005 OUTLET 101 STREAM 2 EQUIPMENT BLANKS MW-4 MW-6 MW-9 FIELD BLANKS MW-4 MW-6 MW-9 OUTFALL 004 OUTFALL 005 OUTLET 001 OUTLET 002 C8 results Envista 111104.xls LCL THEME DATESMPL SMPLT SAMPLEJMUMBER TO Surface Water 5/29/1997 FS WWK-OUTFALL 004 Surface Water 5/29/1997 FS WWK-OUTFALL 005 Other liquid 5/29/1997 FS WWK-001 POND OUTLET Other liquid 5/29/1997 FS WWK-002 POND OUTLET Other liquid 5/29/1997 FS WWK-003 POND OUTLET Other liquid 5/29/1997 FS WWK-STREAM SAMPLE #1 Groundwater 5/28/1998 FS WWK-LLMW-10 Groundwater 5/27/1998 FS WWK-LLMW-04 Groundwater 5/27/1998 FS WWK-LLMW-06 Groundwater 5/27/1998 FS WWK-LLMW-09 Surface Water 6/2/1998 FS OUTFALL 004 Surface Water 6/2/1998 FS OUTFALL 005 Other liquid 6/2/1998 FS OUTLET 101 Other liquid 6/2/1998 FS STREAM #2 Groundwater 5/20/1999 FS WWK-G-LL-MW10 Groundwater 5/19/1999 FS WWK-G-LL-MW4 Groundwater 5/19/1999 FS WWK-G-LL-MW6 Groundwater 5/20/1999 FS WWK-G-LL-MW9 Surface Water 6/3/1999 FS WWK-OUTLET_004 Surface Water 12/10/1999 FS WWK-LOCAL-004 Surface Water 6/3/1999 FS WWK-LOCAL-005 Surface Water 12/10/1999 FS WWK-LOCAL-005 Other liquid 6/3/1999 FS WWK-OUTLET_101 Groundwater 6/3/1999 FS WWK-G-R-2 Other liquid 12/29/1999 FS WWK-LOCAL_LANDFILL_STREAM_II Blank Water 5/11/2000 EB LCL-K-EQBLK Groundwater 5/11/2000FS LCL-G-MW-4 Groundwater 5/10/2000 FS LCL-G-MW-6 Groundwater 5/10/2000 FS LCL-G-MW-9 Other liquid 9/27/2000 FS LCL-Z-OUTFALL_004(WEST_STREAM) Other liquid 9/27/2000 FS LCL-Z-OUTFALL_005(CENT_STREAM) Other liquid 9/14/2000 FS LCL-Z-OUTLET_101 Other liquid 9/14/2000 FS LCL-W-STREAM_SAMPLE_N02 Blank Water 5/16/2001 EB LCL-K-EQBLK-2 Groundwater 5/16/2001 FS LCL-G-MW-4 Groundwater 5/16/2001 FS LCL-G-MW-6 Groundwater 5/16/2001 FS LCL-G-MW-9 Blank Water 4/11/1996 FB FBLK Groundwater 4/11/1996 FS MW-4 Groundwater 4/11/1996 FS MW-6 Groundwater 4/11/1996 FS MW-9 Surface Water 4/2/1996 FS OUTFALL 004 Surface Water 4/2/1996 FS OUTFALL 005 Other liquid 4/2/1996 FS 001 POND OUTLET Other liquid 4/2/1996 FS 002 POND OUTLET Page 1 LCL QUAL_EPA QUALJNHOUSE J J J REVIEW METHODNO UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF PREPMTHD None None None None None None None None None None None None None None UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF UDF None None None None None None None None PREPREP NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS DRY 2 2 2 2 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 LAB NUMBER MD791-005 MD791-006 MD791-001 MD791-002 MD791-003 MD791-004 MF994-004 MF994-001 MF994-002 MF994-003 MG023-003 MG023-004 MG023-001 MG023-002 3157423-1 3157420-1 3157421-1 3157422-1 3165944-1 3289584-1 3165945-1 3289585-1 3165943-1 3167122-1 3300040-1 3379847-1 3379845-1 3379844-1 3379843-1 3466769-1 3466770-1 3458428-1 3458429-1 3619882-1 3619879-1 3619880-1 3619881-1 MA722-004 MA722-001 MA722-002 MA722-003 MA644-003 MA644-004 MA644-005 MA644-006 RSLTMOD < < < < < RESULT 13 41 80 0.2 23 11 0.22 26 9.0 0.1 12 39 54 15 0.15 16.2 1.32 0.046 3.06 7.1 6.8 34. 15.0 0.552 10.7 0.029 10.0 1.42 0.029 4.73 13,3 12.0 4.12 0.028 1.40 3.0 0.039 0.1 39 15 0.14 13 39 61 72 UNIT UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L MDL 0.033 0.60 0.029 0.028 0.028 0.29 0.56 5.7 2.8 0.029 1.7 0.029 0.29 0.029 0.029 0.28 0.28 0.29 0.28 0.028 0.028 0.56 0.028 PQL 1.0 2.0 4.0 0.2 2.0 0.5 0.20 5.0 1.0 0.10 2.0 4.0 5.0 2.0 0.11 2 0.095 0.095 0.094 1 1.9 19 9.4 0.098 5.8 0.095 1 0.095 0.095 0.95 0.95 1 0.95 0.094 0.094 1.9 0.094 0.1 5.0 2.0 0.1 1.0 2.5 4.0 4.0 DUP C8 results Envista 111104.xls Page 2 PROJECT ANNUAL C8 SAMPLING-1996 ANNUAL C8 SAMPLING-1996 ANNUAL C8 SAMPLING-1996 C8 SAMPLING 1/02 C8 SAMPLING 1/02 C8 SAMPLING 1/02 C8 SAMPLING 1/02 C8 SAMPLING 1/02 C8 SAMPLING 1/02 C8 SAMPLING 1/02 C8 SAMPLING 1/02 C8 SAMPLING 1/02 C8 SAMPLING 1/02 C8 SAMPLING-1/03 C8 SAMPLING 1/04 LCL C8 SAMPLING 1/04 LCL C8 SAMPLING 1/04 LCL C8 SAMPLING 1/04 LCL C8 SAMPLING 10/02 C8 SAMPLING 10/02 C8 SAMPLING 10/02 C8 SAMPLING 10/02 C8 SAMPLING 10/02 C8 SAMPLING 10/02 C8 SAMPLING 10/02 C8 SAMPLING 10/02 C8 SAMPLING 10/02 C8 SAMPLING 10/02 C8 SAMPLING 10/02 C8 SAMPLING 10/02 C8 SAMPLING 10/02 C8 SAMPLING 10/03 - LCL C8 SAMPLING 10/03 - LCL C8 SAMPLING 10/03 - LCL C8 SAMPLING 10/03 - LCL C8 SAMPLING 11/02 C8 SAMPLING 11/02 C8 SAMPLING 11/03 - LCL C8 SAMPLING 11/03 - LCL C8 SAMPLING 11/03 - LCL C8 SAMPLING 11/03-LCL C8 SAMPLING 12/01 C8 SAMPLING 12/01 C8 SAMPLING 12/01 C8 SAMPLING 12/01 SRCNAME OUTLET 003 STREAM 1 STREAM 2 EQBLK-1 EQBLK-2 EQUIPMENT BLANKS MW-10 MW-4 MW-6 MW-9 OUTFALL 004 OUTFALL 005 OUTLET 101 OUTLET 101 EQBLK-1 OUTFALL 004 NEW OUTFALL 005 OUTLET 101 EQBLK-2 EQBLK-3 MW-10 MW-11A MW-11B MW-12B MW-13B MW-14B MW-4 MW-6 MW-6 MW-9 OUTLET 101 EQBLK-1 OUTFALL 004 NEW OUTFALL 005 OUTLET 101 INLET 002 OUTLET 101 EQBLK-1 OUTFALL 004 NEW OUTFALL 005 OUTLET 101 EQBLK-1 EQBLK-2 MW-10 MW-4 C8 results Envista 111104.xls LCL THEME Other liquid Other liquid Other liquid Blank Water Blank Water Blank Water Groundwater Groundwater Groundwater Groundwater Other liquid Other liquid Other liquid Other liquid Blank Water Other liquid Other liquid Other liquid Blank Water Blank Water Groundwater Groundwater Groundwater Groundwater Groundwater Groundwater Groundwater Groundwater Groundwater Groundwater Other liquid Blank Water Other liquid Other liquid Other liquid Other liquid Other liquid Blank Water Other liquid Other liquid Other liquid Blank Water Blank Water Groundwater Groundwater DATESMPL SMPLT 4/2/1996 FS 4/2/1996 PS 4/2/1996 FS 1/23/2002 EB 1/27/2002 EB 1/11/2002 EB 1/27/2002 FS 1/27/2002 FS 1/27/2002 FS 1/27/2002 FS 1/24/2002 FS 1/11/2002 FS 1/23/2002 FS 1/29/2003 FS 1/21/2004 EB 1/21/2004 FS 1/21/2004 FS 1/22/2004 FS 10/15/2002 EB 10/10/2002 EB 10/15/2002 FS 10/8/2002 FS 10/8/2002 FS 10/8/2002 FS 10/8/2002 FS 10/9/2002 FS 10/15/2002 FS 10/15/2002 DUP 10/15/2002 FS 10/15/2002 FS 10/31/2002 FS 10/21/2003 EB 10/21/2003 FS 10/21/2003 FS 10/21/2003 FS 11/21/2002 FS 11/19/2002 FS 11/13/2003 EB 11/13/2003 FS 11/13/2003 FS 11/13/2003 FS 12/13/2001 EB 12/13/2001 EB 12/13/2001 FS 12/13/2001 FS SAMPLEJMUMBER 003 POND OUTLET STREAM SAMPLE #1 STREAM SAMPLE #2 LCL-K-EQBLK-1 LCL-K-EQBLK-2 LCL-K-EQBLK-3 LCL-G-MW-10 LCL-G-MW-4 LCL-G-MW-6 LCL-G-MW-9 LCL-Z-OUTLET 004 WEST STREAM LCL-Z-OUTFALL 005 LCL-Z-OUTLET 101 LCL-Z-OUTLET 101 LCL-K-EQBLK-1 LCL-Z-OUTFALL 004 NEW LCL-Z-OUTFALL 005 LCL-Z-OUTLET 101 LCL-K-EQBLK-2 LCL-K-EQBLK-3 LCL-G-MW-10 LCL-G-MW-11A LCL-G-MW-11B LCL-G-MW-12B LCL-G-MW-13B LCL-G-MW-14B LCL-G-MW-4 LCL-G-MW-6-2 LCL-G-MW-6 LCL-G-MW-9 LCL-Z-OUTLET 101 LCL-K-EQBLK-1 LCL-Z-OUTFALL 004 NEW LCL-Z-OUTFALL 005 LCL-Z-OUTLET 101 LCL-Z-INLET 002 LCL-Z-OUTLET 101 LCL-K-EQBLK-1 LCL-Z-OUTFALL 004 NEW LCL-Z-OUTFALL 005 LCL-Z-OUTLET 101 LCL-K-EQBLK-1 LCL-K-EQBLK-2 LCL-G-MW-10 LCL-G-MW-4 TOP Page 3 LCL QUAL EPA QUAL INHOUSE REVIEW METHODIMO UDF UDF UDF 01M-008-046 01M-008-046 01M-008-046 01M-008-046 01M-008-046 01M-008-046 01M-008-046 01M-008-046 01M-008-046 01M-008-046 01M-008-046 01M-008-046 01M-008-046 01M-008-046 01M-008-046 01M-008-046 01M-008-046 01M-008-046 01M-008-046 01M-008-046 01M-008-046 01M-008-046 01M-008-046 01M-008-046 01M-008-046 01M-008-046 01M-008-046 01M-008-046 01M-008-046 01M-008-046 01M-008-046 01M-008-046 01M-008-046 01M-008-046 01M-008-046 01M-008-046 01M-008-046 01M-008-046 01M-008-046 01M-008-046 01M-008-046 01M-008-046 PREPMTHD None None None None None None None None None None None None None None NS NS NS NS None None None None None None None None None None None None None NS NS NS NS None None NS NS NS NS None None None None PREPREP NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS DRY 2 2 2 1 1 1 1 1 1 1 1 1 1 1 W W W W 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 LAB NUMBER MA644-007 MA644-001 MA644-002 L32613-2 L32640-5 L32557-2 L32640-4 L32640-1 L32640-2 L32640-3 L32622-1 L32557-1 L32613-1 L34147-1 L000170-4 L000170-2 L000170-3 L000170-1 L33789-6 L33777-6 L33789-4 L33762-1 L33762-2 L33762-3 L33762-

XERADUR 5 PFAS-free - Ceramic Our latest development based on sol-gel technology This product guarantees best cooking results in a "completely natural way" and convinces with an excellent performance.

FOR DU PONT USE ONLY Copies co AR226-2763 S, I. du Font de Nemours and Company Haskell Laboratory for Toxicology and Industrial Medicine Elkton Road, Newark, Delaware 19711 HASKELL LABORATORY REPORT NO. 291-81 Material Teeted Octanoic acid, pentadecafluoro-, ammonium salt* Hsskell No. 12,037 t OtherCodes Study Initiated/Completed ------5/20/80 - 6/17/81------ Material Submitted by G.

AR226-2784 FOR DU POUT USE ONLY Copies to Haskell E.

AR226-2873 Procedure: The test material, as an aqueous solution, was administered by intra to a group of ten young adult ChR-CD male rats, five times a week f'-ios two weeks dosage level of 4,470 nig/kg/day; an additional group of ten rats seirved as cont intubated with distilled water.

Addressing carbon leakage risk to support decarbonisation - consultation overview session20230406_100457-Meeting Recording (1) 0:02 Industrial Decarbonization in the Department for Energy Security and Net Zero. 0:07 Jennifer Rowland is the deputy director for Energy and Transport Tax at the Treasury, and Catherine Stewart is the deputy director for Trade policy in the Treasury's international group. 0:18 Over to you, Sam. 0:21 Thanks so much, [REDACTED Regulation 13 - personal data], and yeah, welcome everyone.

LPGBundesverband der Pharmazeutischen Industrie e.V.

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Perluorooctanpsulfonate: PK During Pregnancy and Lactation + Analytical Protocol M. ."

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Opinions on the proposal itself The proposal is confusing in terms of transportation - Table 8 suggests derogation of engine seals, gaskets and O-rings, while Table 9 only allows derogations for safety critical items.

Chemical Compatibility Guide Polypropylene This chart is only meant to be used as a guide for chemical resistance.

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CentreA-nalyticLaalboratoriIensc,. 3048ResearchDrive Phone: (814)231-8032 StateCollege,PA 16801 Fax: (814)231-1253 or (814)231-1580 AnalyficRaelport Fluorochemical CharacterizationofSurface Water Samples Mobile,Alabama (W2151) Centre AnalyticalLaboratory Report No. 023-014D Testing Laboratory CentreAnalyticaLlaboratoryI,nc. 3048 Research Drive StateCollege,PA 16801 3M Environmental Laboratory Contact Kent R.