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sormemymemesonce oon oisEono,cmce fP iertT l h RTogEer. sickoeam \ TAFT, STETTINIUS & HOLLISTER LLP 425 WALNUT STREET, SUITE 1800 CINCINNATPIr, OHIO 45202-3957 FAX 513.391.0208 [r--e coomm once oT L TR am cW oSt E sSaan AR222%- 9025 February 7, 2005 FEDERAL EXPRESS Dr.

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AR226-2148 SSG jerator: [\n 1 )i\MJ5 freform F ressure: 5C OOPS1 Date:8-?

AR226-2245 Thompson Collins Watklns Smith Name r9 9 Particulate Vapor Total N Deposition Deposition Deposition O Coordinates (q/m 2/yr) (q/m 2/yr) (g/m2yr) O A A 445213E 0 .00098 0.00008 0 .00106 W 4346090N 443141E 4345753N 443223E 4345847N 443254E 4345888N 0 .00179 0.00193 0.00186 0 .00021 0.00019 0.00018 0 .00200 0.00212 0.00204 Concentrations are from the deposition modeling runs, and Include wet and dry depletion due to deposition Particulate Concentration (ug/m3) Vapor Concentration (ug/m') Total Concentration (ug/m3 0 .02000 0 .03217 0 .05217 0 .03752 0.05854 0 .09606 0.03665 0.05695 0 .09380 0 .03554 0.05587 0 .09141

AR226-2255 Chris EShoop 02/08/2002 03:23 PIVI _ _ _____ To: Debbie J Mulrooney/AE/DuPont@DuPont cc: Robert F Pinchot/DEV/AE/DuPont@DuPont, Stephen J Gissy/AE/DuPont@DuPont, Roger J Zipfel/AE/DuPont@DuPont Subject Re: C8 2001 Emissions D Debbie, I have calculated emissions for 2001 but the emitted amounts are not broken out by emission point.

AR226-2359 DRAFT PHASE II QUALITY ASSURANCE PROJECT PLAN DUPONT WASHINGTON WORKS SITE WASHINGTON, WEST VIRGINIA Date: March 2004 Project No.: 507532 18983990.04006 ^ CORPORATE REMEDIATION GROUP An Alliance between DuPont and URS Diamond Barley Mill Plaza, Building 27 Wilmington, Delaware 19805 EXP000431 Draft Document Do Not Cite or Quote, March 30, 2004 Draft Phase II Quality Assurance Project Plan Table of Contents TABLE OF CONTENTS 1.0 Project 1 Management................................................................................................... 1.1 Project Background.....................--.--............................................................... 1 1.2 Project Description............................................................................................ 2 1.3 Project Organization..........................................................................................3 1.3.1 Project Director.................................................................................... 3 1.3.2 Project Manager................................................................................... 4 1.3.3 Health and Safety Officer.................................................................... 4 1.3.4 Project Geologist................................................................................. 4 1.3.5 Technical Consultants.......................................................................... 4 1.3.6 Technical and Support Staff................................................................ 4 1.3.7 Quality Assurance Officer................................................................... 5 1.3.8 Project Chemist................................................................................... 5 1.3.9 Laboratory Personnel........................................................................... 5 1.3.10 Data Review Responsibilities.............................................................. 5 1.4 Quality Objectives............................................................................................. 6 1.4.1 Data Quality Characteristics................................................................ 6 1.4.2 Data Quality Objectives....................................................................... 6 1.4.3 Measurement System Characteristics.................................................. 7 1.5 Training/Certification........................................................................................9 1.6 Documentation and Records............................................................................. 9 1.6.1 1.6.2 1.6.3 1.6.4 1.6.5 1.6.6 1.6.7 Document Control ...............................................................................9 Field Logbook...................................................................................... 9 Sample Log........................................................................................ 10 Laboratory Deliverables.................................................................... 10 Report Preparation............................................................................. 13 Electronic Data Deliverables............................................................. 13 Archival Requirements..............................,..........,.........----....--... 13 2.0 Data Generation and Acquisition............................................................................. 14 2.1 Sampling Process Design................................................................................ 14 2.1.1 Sample Naming ................................................................................. 14 2.2 Sampling Methods.........,......--...............--.................------.......------. 15 2.2.1 Preliminary Activities........................................................................ 15 2.2.2 General Instructions for All Sampling............................................... 16 2.2.3 Soil Boring and Soil Sampling.......................................................... 18 2.2.4 Well Construction in the LHWA Well Field..................................... 19 2.2.5 Well Development............................................................................. 19 2.2.6 Groundwater Sampling (Wells)......................................................... 19 2.2.7 Groundwater Sampling (Taps)...................-.........-.-.................-.... 21 2.2.8 Surface Water Sampling of Springs and Cisterns. ----......--........... 21 2.2.9 Air Modeling Verification Study Sampling.......--......----.................22 2.2.10 Meteorological Measurements..--.......----.--...------.---- .....23 <N 2.2.11 Surface Soil/Biota (Vegetation) Sampling .................................--..24 o -------------------------------------------------------------------------------------------------------------------------------------------------------------------- 0 0.-:'' Phase II Quality Assurance Project Plan_033004.doc I ~ .

AR226-2493 FC.143 RESULTS IN CED WASHINSTON WORKS SRCNAME AA04-MW01 AA04-MW01 AA04-MW01 AA08-MW01 AA05-MW01 AB07-MW02 AB07.MW02 AC07-MW02 AC07-MW02 AI511-MW01 AE11-MW01 AlOMWVOI A106-MW01 BLD6-231 BLDG-231 BLDO-293 BLDG-S BUILDING-1 MAIN BUIUDING.363 AFTER_F1LTE CKjOFFICE CK OFFICE E1ST-MW01 E13-MW01 E13.MW01 F06-MW01 F06-MW01 G17-MW01 (517-MW01 .G17-MW01 OALLERY 3ALLERY SALLERY GALLERY GALLERY GALLERY K16-PW01 K16-PW01 K1S-PW01 L06-MW01 L06-MW01 LPWDWELLA LPWDWELLA LPWD WEU- A LPWD WELL A LPWDWELLA LPWD WELL A LPWDWELLA LPWD WELL & LPWD WELL B LPWD WELL B LPWD WELL B LPWD WELL B LPWD WELL B LPWD WELL B LPWD WELL F LPWD WELL F - LPWD WELL F LPWD WEU.

AR226-2729 E.

AR226-2848 E.

Copies to: E.

AR226-2905 FOR DU FONT USE ONLY E.

ARY26-02M0 =oir ER 7 MECHANISM OF TOXICITY OF A UNIQUE PESTICIDE * = ETHYLPERFLUOROOCTANE SULFONAMIDE (NEPFOS), NEB.

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