Ann K. Masse, Ph. D. Unit Manager SHEA DuPont Chemical Solutions Enterprise Administration Bldg., Room 224 " C" Chamber Works Deepwater, NJ 08023 ( 856) 540 4588 Tel ( 856) 540 4654 Fax ann. k. masse © usa. dupont. com OPPT DocumentControl Office EPA East, Room 6428 1201 Constitution Avenue, NW Washington, D. C. 20460 Attn: Maiy Dominiak Dear Ms. Dominiak: September 26, 2003 Please find enclosed report titled DuPont Telomer Manufacturing Sites: EnvironmentalAssessment ofPFOA Levels in Air and Water. This report satisfies the Environmental Assessmentrequirement specified in Appendix 1 of the Telomer Research Program Letter of Intent datedMarch 14, 2003.

The information provided in the report was developed by DuPont and is specific to its telomer manufacturing operations atWashington Works in Parkersburg, West Virginiaand Chambers Works, in Deepwater, New Jersey.

Please do not hesitate to contact me should you have anyquestions regarding this submission.

Best regards,

Ann K. Masse, Safety, Health, Environment Unit Manager DuPont Chambers Works Phone: 856 540 4588 Fax: 856 540 4654 Email : ann. k. masse@ usa. dupont. com cc: S. H. Korziniowski  DuPont