E N - 1027 f r c V - 7 .7 0 mm gaiuttonot E.

AR226-2200 EID 384430 Current Permit/Applicatlon/PDF #_________ 1823A 8150 8150 1353A Pre-Existing 614A 614A 781 1953 2365A Note: For some vents the surfactant rate is less than the total particulate reported in Air Em issions Inventory which can Include polymer dust.

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C harles J Zarzecki 02/24/2003 02:43 PM To: Catherine A Barton/AE/DuPont co: Subject: Slid e s Cathie, Here they are.

AR226-2376 I.

------------ -- AR226-2470 1/25/00 DRAFT Responses to GE questions made by Dale VanDeVelde on 1/5/00. 7) C-8 storage and use history Dupont Fluoroproducts began the use o f Ammonium Peifluorooctanoate, C-8, in the early 1950's.

AR226-2668 RECYCLED AR226-2668 Particle Size Distribution of PFOA 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 Engineering SUMMARY A sampling program was conducted to evaluate the particle size distribution (PSD) of PFOA in ambient air at the Washington Works site.

Katherine E.

AR226-2751 Copies to: L ,,, . . .

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AR226-3182 DuPont-6711 TRADE SECRET Study Title | Acute Oral Toxicity Fixed Dose Method Laboratory Project ID: DuPont-6711 T est Guideline: OECD Guidelines for Testing of Chemicals Section 4: Health Effects, No. 420 (1992) Author: Carol Finlay, B.A.

M s. 2 6 - 3 2 7 7 M 1 2 6 -& 7 7 DR.U.NOACK-LABORATORIUM FR ANGEWANDTE BIOLOGIE Effects on the Development of Caenorhabditis elegans in a Water-Sediment System acc. to T r a u n s p u r g e r et al. (19 97 ) Sponsor Asahi Glass C la r ia n t Daikin In d u str ies Ltd D upont Author Gunda W inkelm ann Test Facility D r.U .N o ack-La bo ra to rium F r A n g e w a n d te B io lo g ie Kthe-Paulus-Strae 1 D-31157 Sarstedt Laboratory Prgiect ID Project-No.

- h t Z k - 3 A S if. 466 H-25767: Influence on Growth and Growth Rate o f the Green Alga Selenastrum capricornutum_____________________________ STUDY INFORMATION Substance Tested: Svhonvms/Codes: Haskell Number: 25767 AR2 Z 6 - te g p DuPont-12992 Known Impurities: None Physical Characteristics: White liquid Stability: The test substance appeared to be stable under the conditions of the study; no evidence o f instability was observed.

RECYCLED > 000455 I 05 REVIEW OF WASHINGTON WORKS C-8 DATA PERSONNEL AIR MONITORING AND BLOOD Th e r e v i e w o f b l o o d d a t a v s . c u r r e n t p e r s o n n e l a i r m o n i t o r i n g DATA MUST BE VIEWED AS A TECHNICAL STUDY WHICH DEMONSTRATES THE CORRELATION BETWEEN C-8 IN AIR, C-8 SKIN EXPOSURE, AND BLOOD LEVELS.

AR226-3640 B B1 05P-0185-2 1 Sand to Silty Sand (Alluvium) 2 Silty Sand (Alluvium) 3 Sandy Silt (Till) 4 Silty Sand (Till) 5 Gravelly Sand (Alluvium) 6 Silty Sand (Alluvium) 7 Gravelly Sand (Alluvium) 8 Silty Sand (Alluvium) 9 Peat Grain size distribution and permeability data available I Well screen 0 250 500 750 1000 Horizontal Scale (Feet) Source: Barr Engineering Co.