AR226-2101 Test Results .

P) EsnniSKEDtcox E.

AR226-2168 EID448080 Current Permit/ Aoolicatlon/PDF # 1823A 8150 815D 1353A Pre-Existing 614A 614A 781 1953 2365A Stack Stack Stack Stack Base Stack Stack Stack Permit Reg 29 Reg 29 Zone 17 Diameter Diameter Height Height Elevation Flow Velocity Temp Vent ID Unit ID Vent ID UTM-E UTM-N (ft) T7IME TIM 662 442025 4346847 1.33 (m) 0.405 (ft) (m) 150 45.7 (m) ACFM (mis) 191.1 3349 12.2 1<7F2) T6IFCE TIF 647 442084 4346833 1.5 0.457 59 18.0 191.1 18000 51.8 111 T6IZCE TIZ 699 442102 4346811 1 ' 0.305 63 19.2 195.7 1000 6.5 111 164-5E THJ 652 441920 4346767 1.96 0.59a 70 21.3 194.9 9800 16.5 200 164-2S THG 658 441923 4346756 1.63 0.497 68 20.7 195.0 2800 6.8 300 163-E-26 CDT 231 441939 4346773 0.82 0.251 71 21.7 197.8 500 4.8 130 163-E-11 ' CDW 232 441940 4346772 2.08 0.635 66.6 20.3 197.9 600 0.9 130 163-E-33 CDB 216 441960 4346788 1.3 0.396 60 18.3 198.2 2750 10.5 158 242 CEH 242 441954 4346741 0.67 0.204 70 21.3 197.4 1250 18.0 200 C1FSE CFS 274 441787 4346744 0.69 0.210 110 33.5 197.3 1000 13.6 255 2000 Stack Temp (K) 350.9 317.0 317.0 366.5 422.0 327.6 327.6 343.2 366.5 397.0 Fermiteli Est Actual Allowable Emissions Emissions Ib/vr Ib/vr 0 23 14,308 56666 0 11333 275 0 137 0 2280 14400 2310 14400 0 289 729 21878 2107 9787 ` T6IZCE consists of 18 separate 1-ft diameterstacks, located close together.

AR226-2252 Mark H.

AR226-2311 Paul R Jann 03/13/2003 01:27 PM To: cc: Subject: Catherine A Barton/AE/DuPont@DuPont Wilfred K Whitcraft/AE/DuPont@DuPont, Charles J Zarzecki/AE/DuPont@DuPont, Mark C Hause/DuPont@DuPont Re: air monitoring Q Cathy, Sometimes you need a little real data to satisfy both the Agency and the public when it comes down to sensitive issue like carcinogen HAPs.

Air Dispersion M odeling Verification Study Oct 22,2003 g tNoa toJ AR226-2346 EXP015790 O b jective Compare results from ambient air sampling and air dispersion modeling to understand how modeling predictions relate to measured ambient air concentrations to0^too1\ to EXP015791 Verification Study Scope Air Sampling Program Analytical Methods Modeling Analysis of Results oNm two EXP015792 Air Sampling Locations Simultaneous coverage of all 4 major wind directions (N, S, E, W) Capture point of predicted maximum concentration from modeling Include co-located samplers at predicted maximum Total of six locations IaoMm to EXP015793 Air Sampling Loc ASH026725 EXP015794 ASH026726 EXP015795 | /* Air Sampling Strategy Measure ambient air levels i 24-hour sampling duration Seven (7) sampling events scheduled over 6 weeks Vary day of week to capture variations in daily operations (none expected) and variations in meteorology Record site-specific meteorological and operational data EXP015796 Monitoring Strategy: Samples taken every 6 days for 6 weeks.

2*7 REV -Wt E .

AR226-2431 INTEROFFICE MEMORANDUM Datei Fron; Deptr Tel No; 05-AUQ-193 08:30aW EDT Roger J- Zipfel ZIPFEL PPD-SPD 304-863-2567 TO: 2 addressees CC: 5. addressees Subject: C-8 in site drinking water The attached communication puts some perspective on the recent results of C-8 in our site's drinking water.

AR226-2452 ORGANICS A H A LSIS DATA SHEET jjbratory Haine: CH2M HILT.

AR226-2531 TO: B.

AR226-2574 GROUNDWATER INVESTIGATION QUALITY ASSURANCE PROJECT PLAN FOR WASHINGTON WORKS PLANT Date: January 2002 Project No.: D6WW7423.U1 E !'

AR226-2602 Ubel6.Laurence@epamaa.epa.gov on 12/01/200311:11:00 AM To: cc: AAnnddrreewaVSMHaaJrttnteonw/AsWE//ADEuP/DounPtonDtuPDounPtont, DavidMRurak/AE/DuPont@DuPont Subject: DomWak.Mary0epamall.epa.gov ' Hi Andrew, I hope you had a good Thanksgiving.

AR226-2868 Copies to: E. 1. du Font de N e m o r s and Company Haskell Laboratory for Toxicology and Industrial Medicine HASKELL LABORATORY REPORT HO. 58-78 Material Tested -J Haskell Ho. 11,890 Sample Ready for Testing 12/2/77 3Other Codes j - Material Submitted bv "^Textile Fibers Department Seaford, Delaware 96-HOUR LC502 TO ULUEGILL SUKFISK Procedure: The test material, in original form, was introduced into all-glass exposure vessels and diluted with laboratory supply TOter fd^yleld tKedesiredcohcentrations in a 7.5 final volume.

# AR226-2872 Copies to: E.

AR226-2881 Copies S- I. du Pont de Nemours and Company Haskell Laboratory for Toxicology and Industrial Medicine Elkton Road, Newark, Delaware 19711 ORAL LD50 TEST IN RATS lO^oun^adult'ch'R-CD^ale 2 S E * * * * " * intubation in single doses to 5 level for the U>50 study*.