AR226-2052 \.

AR226-2222 EDD0078951 Stack Parameters Permit Number 1881253DA Pre1-86E3115x543iDAsAting 671841A 1953 Semi-wor2k3s6A5Application SSeemmiiwwoorrkkss AApppplliiccaattiioonn Semiworks Application "Vent ID T61ZCE consists of 18 one-foot diameter vents.

AR226-2258 Todd M Krieger 02/20/2002 12:33 PM To: Steven H Swearingen/AE/DuPont@DuPont cc: Debbie J Mulrooney/AE/DuPont@DuPont, Robert F Pinchot/DEV/AE/DuPont@ DuPont Subject Re: Environmental Impact Study 0 The stack height is 85ft.

) t ii Wa o(0 H HW N iPont Overview o f Fluoi Lers, C-8 and Parker; _ Operations P resented to th e State o f O hio E nviroi February, 20i Columbus, Obi n A gency IO IO Ol AR226- EID781412 ASH028133 EID781414 I I< Fluoiopo lymers "Super" Polymers Chemical resistance across brol temperature range "Slipperiest substance known to m aif Unique properties/High value in use ASH02B135 r-- v00j 1 H * M1 Confidential DuPont Business Information 4 4 Fluoropolynter- 2000 Global Market Demaiwk($Billions) ASH028136 n Major Indtrstties Served by F lu orop olym ers/elastom ers Aerospace/Military Automotive/Transportation Chemical/Petrochemical Processing Semiconductor/Electronics Manufacture Telecommunications Power Generation/Pollution Control Consumer Housewares ASH028137 H-J Htb> H Confidential DuPont Business Information Key requirements: Temperature and chemical resistance; electrical performance; low flammability M ^orfises:, Wire and cable insulation Fuel and hydraulic hoses Seals/bushing Space apparel Societal Benefits: Passenger ASH028138 ` ' \.II.

AR226-2381 c- 8 EXWIRONMENTAL STATUS History Industrial Hygiene Engineering Changes Protective Equipment Air Monitoring Blood Sampling Long-Term and Short-Term Employees New Hires C-8 Material Balance Off-Plant Disposal In Product To River To Atmosphere Ground Level Modeling Results ENVIRONMENTAL ALTERNATIVES PIP Replace C -8 - C 7F 15CO2NB4 With TBSA - R fC H 2CH2S03H fine Powder EID09134I No Known Substitute Two Expensive Alternatives - Scrubbing of Vents - Conversion to Presumed Innocuous Compound C 7F 15C02NH4 C 7F 15H + C02 + N H 3 RJZQ26744 EID091341 8/ SI 6/27/78 6/12/79 8/13/79 9/79 11/12/79 C "8 REVIEW ' HISTORY BEGAN USE OF C-8 IN DISPERSION POLYMERIZATION, ` FEW PRECAUTIONS'IN HANDLING, ' `: ADVISED EMPLOYEES THAT 3M' FOUND ELEVATED ORGANIC FLUORINE LEVELS IN BLOOD OF WORKERS EXPOSED TO FLU0R1NATED SURFACTANTS, WE WOULD REVIEW OUR SITUATION, ADVISED EMPLOYEES THAT THE REVIEW WAS COMPLETE WITH NO PROBLEMS FOUND, AS AN ADDITIONAL STEP FLUORINE LEVELS IN SOME EMPLOYEES WOULD BE CHECKED.

AR226-2578 Laura Waller Document 10 of 16 ASH017 4 91 E1D477528 OHIO RIVER WATER SAMPLING PROPOSAL FOR THE WASHINGTON WORKS FACILITY AND THE LETART LANDFILL Date: February 2002 Project No.: D6WW7423 CORPORATE REM EDIATION GROUP An Alliance between DuPont and URS Diamond Barley Mill Plaza, Building 27 Wilmington, Delaware 19805 ASH017492 EID477529 Ohio River W ater Sampling Proposal Table of Contents TABLE OF CONTENTS 1.0 Introduction............,,................................. ................................... ....... ..1 2.0 River Water Sampling Approach Near The Washington Works Facility............... ...3 3.0 River Water Sampling Near the Letart Landfill....................................................... ..5 Table 1 TABLES Proposed River Water Sampling Plan DuPont Washington Works Facility and Letart Landfill Figure 1A Figure 1B Figure 2 FIGURES Proposed Ohio River Water Sampling Locations - Upstream, DuPont Washington Works Facility Proposed Ohio River Water Sampling Locations - Downstream, DuPont Washington Works Facility Proposed Ohio River Water Sampling Locations, Letart Landfill Site rev2rfver.doc Feb. 2 7 ,0 2 Wilmington, DE j A SH 017493 EID47753G Ohio Rivet Water Sampling Proposal Introduction 1.0 INTRODUCTION A multi-media Consent Order (Order No.

AR226-2832 HASKELLLABOR A TO R YFQ R TOXICOLOGY ANpINDUSTRIALMEDICINE Company Sanitized.

AR226-2905 FOR DU PONT USE ONLY E.

AR226-2916 Study Sponsor: Issue Date: Document Reference No.: ATOCHEM 28-Jun-84 509 T A R ________ ____________ - Acute Orai Toxicity Author(s): A.

AR226-2929 FOR DU PONT USE ONLY HLR 411-85 HASKELL LABORATORY REPORT NO. 411-85 Title of Report STATIC ACUTE 48-HOUR EC501 OF TO Daphnia magna E.

FOR DU PONT USE ONLY AR226-2946 Du Pont MLR 112-90 l Skin Irritati n Toft wltl in Rabbits Author I John H.

AR226-2953 FOR DU POUT USE ONLY Du Pont HLR 121-91 Approximate Lethal Dose (ALD) of tin Rats Author John H.

'Va*" 'W* AR226-2992 RECHERCHES B iO lO G lQ U E S Baugy, June 17, 1993 STUDY NO. 920083 E PRIMARY CUTANEOUS IRRITATION VMiT'/'ci l.

AR226-3146 DuPont-4003 HASKELL LABORATORY FOR TOXICOLOGY and industrial m ed icin e H-243T9O0:FSATTAHTEIACD, AMCIUNTNEO9W6-SH, OPiUmRepShCaRleEs pErNoImNeGlasTEST PURPOSE: Ttheisst cisoancreanntgreaftiinodnisnagnsdtuddaytadmeseiagsnuerdemtoepntrsovaitdpereadneetesrtimmianteedoifntaeqruvaatlisc. toxicity using fixed GENERAL INFORMATION MPSUDRSITNYo:: nEoletcptrroovniidceMd SoDySspDonUs0or07357, 10097 PP Company Sanitized.

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