DP'l- ,~2m.3- 00< 2 

Mr. Joseph Karpa 

NJ Department of Environmental Protection 

CHMM, Site Manager 

Bureau of Case Management 

401 East State Street 

P.O. Box 028 

Trenton, NJ 08625-0028 

REN 

WN p ~ ~011 

Perfluorooctanoic Acid Groundwater Investigation Report Addendum II 

DuPont Chambers Works, Deepwater, New Jersey 

Dear Mr. Karpa: 

Please find enclosed one copy of the Perfluorooctanoic Acid Groundwater Investigation Report 

Addendum II . Also included are three copies of the report on CD and three sets of hard copies of 

the figures. Also included is a separate CD that contains the data in Hazsite tab delimited 

format . Please note the compounds do not pass the Electronic Data Submittal Application 

(EDSA). Results for PFOA and PFOS do not pass EDSA because the laboratory certification 

number assigned by the state of New Jersey to AXYS Analytical Services Ltd. is seven 

characters (CANA005) but EDSA will only accept five characters . In addition, there currently 

are no laboratories certified by New Jersey for the other 11 perthioroalkyl substances (PFAS's). 

As detailed within the report, DuPont recommends the continued monitoring of PFOA and the 

12 PFAS's in groundwater across the site in accordance with the NJPDES-DGW Permit No. 

NJ0083429. Under this permit, DuPont monitors 36 wells throughout the site semi-annually for 

PFOA and the 12 PFAS's. 

If you have any questions or want to discuss further any aspect of the report, please call me at 

302-999-6197. - 

Very truly yours, 

G" 

cc : David Doyle, DRMRBEERA 

Anne Pavelka, DRMR/BGWPA 

Sin-KieTjho, EPA, Region 11 

33514g 

DuPont Corporate Remediatlon Group 

Chestnut Run Plaza, Building 715 

4417 Lancaster Pike 

Wflrongton, DE 19805 

March 23, 2011 

Andrew S. Hartten 

Project Director 

Corporate Remediataon - NJ rV 

CONTAINS t,10 Cef 

El d. Pea r. Nxnour . .nd ceap .w 
DuPont Chambers Works 

Perfluorooctanoic Acid Groundwater Investigation Report Addendum (March 2011) 

CERTIFICATION I 

"I certify under penalty of law that the information provided is true, accurate and 

complete. I am aware that there are significant civil penalties for knowingly submitting 

false, inaccurate or incomplete information and that I am committing a crime of the 

fourth degree if I make a written false statement which I do not believe to be true. I am 

also aware that if I knowingly direct or authorize the violation of any statute, I am 

personally liable for the penalties." 

3-1~- l~ 

Andrew ~S : -Har-Ete~- nate--

DuPont corporate Remediation Group 

Project Director 

WITNESSED THIS 1'1 DAY OF M a +~- k , 20 1. I 

°~tJ~-~~ j~- 

Sally Prosser 

Notary Public 
DuPont Chambers Works 

Perfluorooctanoic Acid Groundwater Investigation Report Addendum II (March 2011) 

CERTIFICATION II 

"I certify under penalty of law that I have personally examined and am familiar with the 

information submitted in this document and all attached documents, and that based on my 

inquiry of those individuals responsible for obtaining the information, I believe that the 

submitted information is true, accurate and complete. I am aware that there are 

significant civil penalties for knowingly submitting false, inaccurate or incomplete 

information and that I am committing a crime of the fourth degree if I make a written 

false statement which I do not believe to be true . I am also aware that if I knowingly 

direct or authorize the violation of any statute, I am personally liable for the penalties." 

__~ ~ rl T L, 

Du~'ont CorporatyRemSdiation Group 

Remediation Team Manager 

WITNESSED THIS h DAY OF IN1 A ~-c G` , 20 1 A 

Sally Prosser 

Notary Public