DuPont Chemical Solutions Enterprise

Chambers Works

Deepwater, NJ  08023

CERTIFIED MAIL – Return Receipt Requested

February 5, 2008

Document Control Office

US Environmental Protection Agency

Office of Pollution Prevention and Toxics

EPA East

Room 6428

1200 Pennsylvania Avenue, NW

Washington, DC 20460

Re: 	EPA – HQ – OPPT – 2003 - 0012

	DuPont Chambers Works NJPDES Permit No. NJ0005100

	PFOA Data Submittal – Outfall DSN662 Weekly Grab Samples

	October 2007 Sample Data

Dear Document Control Office:

As per Part IV, Section G.5.a of the NJPDES permit, we are submitting a summary of PFOA analytical results for the weekly grab samples taken at internal outfall DSN662A to NJDEP on a monthly basis. Per your request, we are sending you a paper and electronic copy of the report for samples taken during October 2007. We will continue to send you the reports each month.

If you have any questions, please do not hesitate to call me at (856) 540-3015.

Sincerely,

Karen L. Pinder

SET Environmental Coordinator

DuPont Chambers Works

Enclosures

Copies to:

Director, Chemical Control Division

US Environmental Protection Agency

Office of Pollution Prevention and Toxics

EPA East

Room 4146

1201 Constitution Avenue, NW

Washington, DC 20004

Ms. Susan Rosenwinkel (cover letter only)

Principal Environmental Engineer

NJDEP Division of Water Quality

Bureau of Point Source Permitting – Region 2

401 E. State Street

P.O. Box 029

Trenton, NJ 08625-0029