AR226-2200 Current PermiVAppllcatlon/PDF H 1823A 815D 8150 1353A Pre-ExIstlna 614A 614A 781 1953 236SA Note: For some vents the surfactant rate is less than the total parttoulate reported In Air Emissions Inventory which can Include polymer dust.

AR226-2220 FB^ ^,^ C.L : Ron J Buchanan 11/29/2001 10:45 AM To: cc: Subject: Robert F Pmchot/DEV/AE/DuPont@DuPont Debbie J Mulrooney/AE/DuPontODuPont, Steven L Grise/AE/DuPont@DuPont, Mary A Kaiser/AE/DiiPont@DuPont.

AR226-2273 \ f^ ') ', ..

AR226-2318 ABR QUALITY DISPERSION MODELING ANALYSIS OF C8 EMISSIONS DuPont Fayetteville, North Carolina Facility Prepared by: Charles J.

AR226-2354 DuPont 2004 Multi-Media Sampling Plan WV and OH January 15,2004 rn x Q 0 0 0 w2> .o 0 January 15,2004 DuPont "Phase T Media to be Sampled by DuPont in 2004 in WV and OH Air Private Water Sources Public Water Sources Soil Biota |T) [above listing excludes sampling required by permit] 0 0 0 2 January 15,2004 ^p^ .^8r DuPont Washington Works Area Air Modeling/Sampling Completed - Air dispersion modeling completed and updated for ambient air concentrations (Time periods: y 2002 and 9/02 - 8/03, AR226 and ECA docket) In-progress - Fence line sampling in progress to compa results from ambient air sampling and air dispersion modeling to understand how modeling predictions relat measured ambient air concentrations S -0 o January 15,2004 (0 N) DuPont Air Objective: Compare results from ambient air sampling to air dispersion modeling.

AR226-2417 SAMPLE ^ ^ C-8 SAMPI.E SUMMARY:11/90 TO PRESENT (UPDATED DATE RESULT SAMPLED PPB C-8 STATUS ^ \ 1.

AR226-2436 SJSTKK.OWT.CK MEMORANDUM Date: Fro: Dept: Tel Ho: 06-Jun-1995 03:57pm KAZUAKI SUZUKI SUZUKIKK AT Al AT YOVXOO DUJL-MDF 81-543-34-2233 TO: Robert L.

AR226-2544 UNITED STATES ENVIRONMENTAL PROTECTION A6ENCY REGION II!

AR226-2598 I ^ I I REVISED GROUNDWATER FLOW I MODEL DUPONT WASHINGTON WORKS I WASHINGTON, WV I I I "') * I Date: January 2003 I Project No,: 18983635 7423 I I I CORPORATE REMEDIATION GROUP An Alliance between DuPont and URS Diamond I Bariey Mill Plaza, Building 27 Wilmington, Delaware 19805 I w ASH020280 EID630708 I I I I I I tKSKjjl 'tW ",'' '|I I I I I I I I Revised Qroundwater Flow Modal _______________________Introduction TABLE OF CONTENTS 1.0 Introduction,-................................"..--.---..--...............................,,,.,...--..................,3 2,0 Site Setting, Geology, and Hydrogeology.................................................................. 4 2.1 Site Setting..........,,..................................,,....,,...,,,,,,.----................,,,,.,,.,,---- 4 2.2 Geology................................,.....................................--.-....----.------.--.---4 2.3 5 Hydrogeology.............................................................................................. 3.0 Primary Data Sources....................,...,...........,..,.......,,.............................,,........----. 7 4.0 Model Set-up................................................................................................. 9 4.1 Model Domain and iMscredzation................................................,,,,...........-- 9 4.2 Boundary Conditions ....,,,,...,,.....,,,,...,,.----..............,,,,.,,,........--.--............ 10 4.2-1 No Flow Boundaries ,,.,,,,...,,..,,.,,.....,,,,...........,,.........,,,,,,,,................ 10 4.2.2 Ohio River..................................................................................... 10 4.2.3 Minor Surface Water Features.................................................... 12 4.2.4 Pumping Wells................................................................................. 13 4.3 Main Input Values......--.........,........................,,..............-...........--.............. 16 4.3.1 Hydraulic Conductivity ............................................................ 16 4.3.2 18 Recharge.............................................................................. 5.0 Groiffldwater Model Calibration ..,,.,,................,,...,......,,...,,..,--.............................. 19 5.1 Calibration Strategy....................................................................................... 19 5.2 Calibration Results................................................................................. 20 6,0 Model Results.....,.,.........,.............,.,,.,.,,.-.-.-...................,..........----................2l 6.1 MassBalaflce...,............................,........,,,.,.--................,.,..,...--"..--..............21 6.2 Current Pumping Conditions........................................................................... 21 6.3 No DuPont Pumping.......................................................................... 22 6.4 No GE Pumping.............................................................................................. 23 6.5 No Pumping by DuPont or GE................................................................. 23 6.6 No Little HocldngWA Pumping......................................................... 23 7.0 Sensitivity Analysis....................,.,.,.,,.,,.,,..................................--....--.................... 25 8.0 Model Conclusions.......,..,.,,,,.--.........................................--....--..----...--...,,,.".26 9.0 27 References..............,.......,,.,.....-- .........,,...,,........,,.,,,,..,,..............,,..,,,,--...-..--.. 74Z3WWGWM-R01^oo Jan. 7.03 Wllmlnglon, DE ASH0202B1 EID630709 Revised Oroundwaier Plow Model Introduction TABLES Table 1 Primary Data Sources for the Gtoundwater Flow Model ,..,,., ...7 Table 2 Finite-Difference Grid Vertical Discretization .................. ...9 Table 3 Table 3.

AR226-2600 1 A^wl-kL 6tppi-b U^A'1&:M^ &^4 , 5oftzMftfi lcfcp^f4 JMia^fiX.

AR226-2788 C-8 ALTERNATES: MATERNAL AND DEVELOPMENTAL TOXICITY IN THE RAT (PRELIMINARY STUDY, BY GAVAGE) HASKELL LABORATORY REPORT NUMBER 441-84 Copies to: Company Sanitized.

'ii^/' AR226-2819 Copies ,to:|---------- I .

E.

-^-- Copies Co; AR226-2882 Material Tested E,, I. du Pont de Nemonrs and Company Hasktill Laboratory for Toxicology and Industrial Medicine Elkton Road, Newark., Delaware 19711 HASKELL'LABORATORY REPORT NO. 56-80 Haskell No. 13,1'97 Ocher Codes Study Initiated/ Completed 8/21/79 - 8/27/79 Mate Chemical Jackson EYE IRRITATION TEST IN RABBITS Procedure; One-tenth mllllliter of the undiluted test material, was placed Into the right conjunctlval albino rabbits.

FOR DU FONT USE ONLY AR226-2884 Copiei.