A model o f groundwater migration from DuPont to Little Hocking was presented.

.: Sponsor: Study Initiated - Completed: In-Life Phase Initiated - Completed: DuPont Specialty Chemicals E.

Determination of Ultraviolet Spectrum: 8-2 Telomer B Alcohol DuPont report # 12734 8-2 Telomer B Alcohol, C8Fi7CH2CH2OH: Ultraviolet Spectrum Test Guideline(s) Authors Mary A.

DuPontTM, the DuPont Oval Logo, and all trademarks and service marks denoted with TM, SM or are owned by affiliates of DuPont de Nemours, Inc. unless otherwise noted. 2021-2022 DuPont.

ARRRG _ egg Vapor Pressure Determination: 8-2 Telomer B Alcohol DUPONT REPORT 12735 8-2 TELOMER B ALCOHOL, CyF;CH;COHH;: VAPOR PRESSURE Test Guideline(s) Authors MDaacryylPA..

Does not contain T SC A CBt - 4- DuPont BUI 4-94 ,, c b robbtt ... p U c b i

I. du Pont de Nemours and Company ("DuPont") owns and operates the DuPont Washington Works Plant in Parkersburg, West Virginia, across the Ohio River from the Little Hocking well field.

H-23960: Local Lymph Node Assay (LLNA) DuPont-4199 E.

Specific Comment *7 The DuPont Washington Works 100 year floodplain elevation la 606.2 feet above mean sea. level (MSL).

I. du Font de Nenorrs and Company, Newark, Delaware or in the DuPont Records Management Center, tfilmingtcn, Delaware.

Ohio EPA request that DuPont address each of the comments provided below.

Dawson, GIH, CSP Date o f Preparation: December 9,2004 000242 DuPont Company PFOA in Blood Chambers Works 2004 Non-PFOA/Non-Telomers Count M in Avg Median Max Std Dev Operator Mechanic 12.3 13.2 43.2 17.1 5.55 8.11 10.3 10 62 5.55 13.20 14.91 15.15 10.15 15.15 43.20 17.10 14.05 2.76 All 12.3 43.2 5.55 8.11 10.3 10 13.2 17.1 8 Count 5.55 Min 14.97 Avg 11.30 Median 43.20 Max 1192 Std Dev Prepared December 9,2004 Barbara J.

3500 (TR 52k | AR 226 _ (042 DuPont Product Stewardship Update United States Environmental Protection Agency 17December 2001 R.

I. duPont de Nemours & Co., Inc.

DuPont Engineerin November 20, 2002 OuPoni Engineering Earley Mill Plaia Bldg. 17 Lancaster Pil-s 0 fue. !