DuPont Corporate Remediation 

 Chestnut Run Plaza, Building 715 

 4417 Lancaster Pike 

 

Docket No. OPPT-2004-0113 September 10, 2012 

EPA-DuPont MOU 

Page 1 of 1 OPPT-2004-0113 PFOA Site-Related Environmental Assessment Program 

September 10, 2012 

Director, Chemical Control Division (7405M) Document Control Office 

Room 4146 EPA East Office of Pollution Prevention and Toxics 

U.S. Environmental Protection Agency EPA East, Room 6428 

1201 Constitution Avenue, NW U.S. Environmental Protection Agency 

Washington, DC 20004 1201 Constitution Avenue, NW 

202-564-4760 Washington, DC 20004

 202-564-8930 

Attn: EPA Docket ID Number OPPT-2004-0113 

Memorandum of Understanding (MOU) between the U.S. Environmental Protection 

Agency (EPA) and E. I. DuPont de Nemours and Company (DuPont) for a 

Perfluorooctanoic Acid (PFOA) Site-Related Environmental Assessment Program 

(November 3, 2005) 

Re: Table 2.2 - Quarterly MOU Status Report #5 Phase III – Future Work Plan, DuPont 

Washington Works (May 3, 2012) 

Dear Sir/Madam: 

The Quarterly MOU Status Report #5 Phase III – Future Work Plan was submitted on May 3, 

2012, in accordance with Section V.F.2 of the above-identified MOU. A footnote for Table 2.2 

was inadvertently omitted which states that only two of the 65 produce samples collected in Ohio 

had measurable concentrations of PFOA, with the concentrations as shown in the table. The 

other 63 produce samples collected in Ohio were non-detect with the limit of detection ranging 

from 0.44 ug/kg to 0.52 ug/kg. This footnote has been added to Table 2.2, which is attached in 

hard copy. In addition, a digital copy of this table is also attached. 

If you need any additional information or further clarification, please contact me (302-999-6197) 

or Jenny Liu (302-999-3628). 

Very truly yours, 

Andrew S. Hartten 

Principal Remediation Project Manager 

Attachment: Hard and digital copy of Table 2.2 for the Quarterly MOU Status Report #5 Phase III – 

May 3, 2012
Table 2.2

Phase III Multi-media Sampling Results, Ohio

Quarterly MOU Status Report #5 Phase III - Future Work Plan

DuPont Washington Works (OPPT-2004-0113)

Media Sample ID Date APFO (ug/L) PFOA (ug/L)

OH-1 8/2/11 ND (0.0034) ND (0.0034) 

OH-3 8/3/11 2.2 2.1

OH-12 8/3/11 10 10

OH-13 8/10/11 ND (0.0034) ND (0.0034) 

OH-16 8/9/11 NQ (<0.017) NQ (<0.017)

Sample ID Date APFO (ug/kg) PFOA (ug/kg)

OH-1 8/2/11 3.6 3.5

OH-2 8/3/11 2.4 2.3

OH-3 8/3/11 5.4 5.2

OH-4 8/2/11 2 1.9

OH-5 8/3/11 4.7 4.5

OH-6 8/3/11 8.3 8

OH-7 8/10/11 10 10

OH-8 8/3/11 3 2.8

OH-9 8/12/11 17 16

OH-10 8/4/11 6.7 6.4

OH-11 8/11/11 11 11

OH-12 8/3/11 3.8 3.7

OH-13 8/10/11 2.6 2.5

OH-14 8/4/11 1.7 1.7

OH-15 8/12/11 18.45 17.6

OH-16 8/9/11 13 12

OH-17 8/4/11 3.4 3.3

OH-18 8/10/11 1.7 1.6

OH-19 8/4/11 NQ (<1.9) NQ (<1.9)

Sample ID Date

OH-8-BEAN 8/3/11

OH-11-BEAN 8/11/11

Beef Tissue** OH-11-BEEF 2/17/12

*All soil results are dry weight corrected.

**All tissue results are “as received.”

^ Only two of the 65 produce samples collected in Ohio had measurable concentrations of PFOA, with 

the concentrations as shown in the table. The other 63 produce samples collected in Ohio were 

non-detect with the limit of detection ranging from 0.44 ug/kg to 0.52 ug/kg. 

***Produce and beef tissue samples were analyzed as tissues and reported as PFOA by Axys. The 

perfluoroctanoate ion (PFO-) is detected by the instrument during analysis. PFOA results were not 

converted to APFO results and tissue samples were not reported as APFO because it is not expected 

that the perfluorooctanoate ion exists in tissues as APFO. 

ND (<0.43)

Untreated 

Irrigation water

Soil*

Produce** ^ PFOA (ug/kg)***

0.89

0.98

09/06/12 1 of 1 Table 2.2