Date Sie; Toxicologist Applican/t Sponsor: "DuPont Representative sr D-- ae -- SS a Company Sanilized.

"* MMDAAATTTEAERRISIAAHELLETSSAAFFEETTYY DATA SHEET 3aSMnM Center 3SMt.

DuPont manufacturing facility located in Parkersburg, West Virginia. 2.

Mandirola Director Division of Water and Waste Management WVDEP 601 57th Street, SE Charleston, WV 25304-2345 Re: Request For Information/Action Relating to GenX Materials Used at and Released From DuPont's/Chemours' Washington Works Facility in Wood County, West Virginia (NPDES Permit WV0001279/Consent Order No. 7418)_______________________ Dear Director Mandirola: This letter serves as a follow up to my email of December 14, 2017, inquiring whether your Agency will be responding to my letter of November 28, 2017 (extra copy enclosed).

AR226-3111 TRADE SECRET Study Title H-23746 and H-23747: Skin Irritation Test in Rabbits Laboratory Project ID: DuPont-1977 AUTHOR: Carol Finlay, B.A.

- dDu;s - 206 -- SafToxicologist Applican/t Sponsor: DuPont Representative Date --~ Company Saniized.

./91by Jii ioak, Penny Mahoney, Mina Mazdai, Terry vandell (of DuPont), with asrirtince fro?

(Japan), DuPont Co.

Delaware (formerly DuPont Records Management Center

.--------------------- Page 1 of 11 lation Approximate Lethal Concentration (ALC) in Rats DuPont HL-1997-00598 Substance Tested: Synonyms/Codes: GENERAL INFORMATION H-22387 H-22632 Physical Characteristics: Stability: water clear liquid The test substance appears to be stable under the conditions of the study; no evidence of instability was observed.

.: Sponsor: DuPont Specialty Chemicals E.

ACKNOWLEDGMENTS The authors thank Kim Kreckmann and Craig Marshall of the Epidemiology Program at DuPont Haskell Laborato ry for Health and Environmental Sciences, Ma rtin Slade MPH of the Yale Occupational and Environmental Medicine Program, and Ellen Eisen ScD of the Harvard School of Public Health .

DuPont sites.

DuPont co-inventor on K2C03 scrubbing technology, patent approved in 2 countries sofar. .

AR226-3114 TRADE SECRET Study Title H-23773 and H-23775: Skin Irritation Test in Rabbits Laboratory Project ID: DuPont-2121 AUTHOR: Carol Finlay, B.A.