DuPont Corporate Remediation Group 

Chestnut Run Plaza 715-240 

974 Centre Road 

P.O. Box 2915 

Wilmington, DE 19805 

E.I. du Pont de Nemours and Company

October 9, 2014

Linda Range 

NJ Department of Environmental Protection 

CHMM, Site Manager 

Bureau of Case Management 

401 East State Street 

Mail Code 401-05F 

Trenton, NJ 08625-0028 

DuPont Chambers Works Complex 

NJPDES-DGW Permit No. NJ0083429 

PFOA Monitoring Program Groundwater Results 2H14 

Dear Ms. Range: 

As required by the NJPDES-DGW Permit No. NJ0083429, DuPont samples groundwater 

semi-annually from 36 wells across the site for analysis of Perfluorooctanoic Acid (PFOA) and 

other perfluorinated compounds. DuPont sampled the wells in July 2014 in accordance with the 

sampling and analysis plan (SAP). The well locations are shown with results in Figure 1. PFOA 

was detected at varying concentrations ranging from not detected [ND (0.0019)] at well 

AA25-M01C to 270 micrograms per liter (μg/L) at well G09-M01A (see Table 1). The highest 

concentrations are located toward the center of the site where groundwater is contained by the 

Interceptor Well System. Table 2 lists the other perfluorinated compounds. 

PFOA was detected at concentrations ranging from 0.45 to 43 μg/L in the B (shallow) aquifer 

along the western portion of the site where a component of groundwater flow is towards the 

Delaware River (see Figure 1). This occurrence is not expected to adversely affect the river 

based on previous studies of other compounds detected in groundwater in the area. 

If you have any questions, please contact me at 302.999.6197. 

Very truly yours, 

Andrew S. Hartten 

Project Director 

Corporate Remediation – NJ 

cc: Edward Lutz, DuPont (database link) 

Sin-Kie Tjho, EPA Region 2 

File: 507141 
Table 1

Summary of Analytical Results

PFOA Monitoring Program

Perfluorooctanic Acid (PFOA)

Second Semester 2014

DuPont Chambers Works

Deepwater, New Jersey

Location F08-M01A G09-M01A K12-M01A C08-M01B C11-M03B D06-M01B D15-M01B F07-

Sample Date 07/21/2014 07/17/2014 07/17/2014 07/08/2014 07/09/2014 07/08/2014 07/10/2014 07/2

Aquifer A AA B B BB

Analyte Units Sample Type 1 11 1 1 11

PFOA UG/L 5.3 270 32 43 0.45 0.6 0.84 

Location J10-M02B K13-M02B K13-M02B L09-M01B N08-M01B P06-M01B P21-M01B R09

Sample Date 07/23/2014 07/01/2014 07/01/2014 07/29/2014 07/18/2014 07/16/2014 07/03/2014 07/2

Aquifer B BB B B BB

Analyte Units Sample Type 1 12 1 1 11

PFOA UG/L 6.4 16 16 1.7 1.5 1.7 97 

Location G04-M01B L09-M01C N08-M01C P06-M02C P06-M02C R10-M01C Z28-M01B Z28-

Sample Date 07/17/2014 07/29/2014 07/18/2014 07/16/2014 07/16/2014 07/21/2014 07/22/2014 07/2

Aquifer C CC C C CC

Analyte Units Sample Type 1 11 1 2 1 1

PFOA UG/L 1.1 2.6 3.8 0.51 0.52 0.28 0.21 0

Location J05-M01C L09-M01D N08-M01D P06-M01D AA22-M01B AA25-M01C C11-M01E G04

Sample Date 07/07/2014 07/29/2014 07/18/2014 07/16/2014 07/22/2014 07/22/2014 07/09/2014 07/1

Aquifer D DD D D DE

Analyte Units Sample Type 1 11 1 1 11

PFOA UG/L 0.78 3.6 2.1 0.19 0.92 0.0019 0.0013 0.0Notes:ND = Non detect at stated reporting limitPFOA = Perfluorooctanoic AcidSample Type 1 = Regular SampleSample Type 2 = Duplicate Sample

Page 1 of 1 
Table 2

Summary of Analytical Results

PFOA Monitoring Program

Perfluorooctanic Compounds

Second Semester 2014

DuPont Chambers Works

Deepwater, New Jersey

Location F08-M01A G09-M01A K12-M01A C08-M01B C11-M03B D06-M01B D15-M01B F07-M01B F08-M01B 

Sample Date 7/17/2014 7/17/2014 7/17/2014 7/8/2014 7/9/2014 7/8/2014 7/10/2014 7/21/2014 7/21/2014 

Aquifer A AABBBBBB

Analyte Units Sample Type 1 11111111

PFBA UG/L 65 55 <0.024 4.6 0.17 0.19 0.15 0.89 5.4 PFBS UG/L <0.13 <0.91 0.025 0.32 0.013 0.023 0.013 0.099 J <0.015 PFDA UG/L 21 77 0.46 4.2 0.091 0.3 0.24 0.52 1.9 PFDOA UG/L 0.4 <0.45 0.067 <0.031 0.013 0.026 0.0086 0.014 J 0.23 J PFHPA UG/L 9.6 94 0.16 5.2 0.24 0.46 0.35 2.4 3.1 PFHXA UG/L 87 380 0.095 31 0.51 1 0.86 7.2 14 PFHXS UG/L <0.13 <0.91 <0.014 <0.062 0.0072 <0.0032 <0.010 <0.016 <0.015 PFNA UG/L 5.8 60 0.18 2 0.081 0.14 0.17 0.95 1 PFOS UG/L <0.13 <0.91 <0.014 <0.16 0.008 0.011 <0.026 <0.014 <0.015 PFOSA UG/L <0.067 <0.45 <0.0070 <0.031 <0.0019 0.0017 0.0056 <0.0070 <0.0076 PFPEA UG/L 15 96 0.082 5.1 0.22 0.45 0.32 2.1 5.5 PFUNA UG/L 1.1 0.49 0.07 <0.031 0.0095 0.025 0.027 0.019 0.47 

Location K13-M02B L09-M01B N08-M01B P06-M01B P21-M01B R09-M02B R09-M02B C11-M01C G04-M01B 

Sample Date 7/1/2014 7/29/2014 7/18/2014 7/16/2014 7/3/2014 7/21/2014 7/21/2014 7/9/2014 7/17/2014 

Aquifer B BBBBBB CC

Analyte Units Sample Type 2 11111211

PFBA UG/L 3.7 J 0.2 0.35 0.44 66 0.37 0.32 0.057 0.5 PFBS UG/L <0.20 <0.021 0.014 0.012 0.93 <0.010 <0.0099 0.0022 0.0093 PFDA UG/L 0.81 0.22 0.06 0.033 2.4 0.18 0.22 0.057 0.052 PFDOA UG/L <0.10 <0.010 <0.0022 UJ <0.0016 UJ <0.41 0.023 J 0.063 J 0.072 <0.0020 PFHPA UG/L 4.3 0.79 0.6 0.75 61 0.39 0.41 0.089 0.47 PFHXA UG/L 18 1.4 1.3 1.3 270 0.64 0.67 0.35 1.4 PFHXS UG/L <0.20 <0.021 0.0065 <0.0033 <0.82 <0.010 <0.0099 <0.0019 <0.0057 PFNA UG/L 1.6 0.35 0.18 0.19 4.8 0.56 0.73 0.03 0.15 PFOS UG/L <0.50 <0.021 0.0051 0.0052 <2.0 <0.010 0.013 <0.0048 0.0098 PFOSA UG/L <0.10 <0.010 <0.0022 0.0016 <0.41 <0.0051 <0.0050 <0.00096 <0.0020 PFPEA UG/L 7.4 0.56 0.9 0.91 91 0.57 0.56 0.13 0.86 PFUNA UG/L <0.10 0.018 0.0048 <0.0016 <0.41 <0.0051 0.0077 0.033 <0.0020 Notes:ND = Not detected at stated reporting limit PFBA = Perfluorobutanoic Acid PFHPA = Perfluoroheptanoic Acid PFOS = Perfluoro

Sample Type 1 = Regular Sample PFBS = Perfluorobutane Sulfonic Acid PFHXA = Perfluorohexanoic Acid PFOSA = PerfluoSample Type 2 = Duplicate Sample PFDA = Perfluorodecanoic Acid PFHXS = Perfluorohexane Sulfonic Acid PFPEA = PerfluoJ = Reported value may not be accurate or precise. PFDOA = Perfluorododecanoic Acid PFNA = Perfluorononanoic Acid PFUNA = PerfluoUJ = Not detected. Reporting limit may not be accurate or precise.

Page 1 of 2 
Table 2

Summary of Analytical Results

PFOA Monitoring Program

Perfluorooctanic Compounds

Second Semester 2014

DuPont Chambers Works

Deepwater, New Jersey

Location P06-M02C R10-M01C Z28-M01B Z28-M01B AA25-M01B C11-M02D J05-M01C L09-M01D

Sample Date 7/16/2014 7/21/2014 7/21/2014 7/21/2014 7/22/2014 7/9/2014 7/7/2014 7/29/2014

Aquifer C CCCCDDD

Analyte Units Sample Type 2 1121111

PFBA UG/L 0.17 0.08 0.057 0.057 0.082 0.16 0.12 2.3 JPFBS UG/L 0.006 0.022 J <0.0028 <0.0024 <0.0020 0.027 <0.0019 <0.032 UJPFDA UG/L 0.01 0.005 0.0015 <0.0012 0.0037 0.11 0.097 0.097PFDOA UG/L 0.0013 0.0011 J 0.0031 J 0.0040 J <0.00099 <0.0050 <0.00093 <0.016 UJPFHPA UG/L 0.33 0.17 0.11 0.1 0.15 0.2 0.25 2.7PFHXA UG/L 0.5 0.23 0.19 0.18 0.26 0.66 0.75 4.8PFHXS UG/L 0.0053 <0.0020 0.0092 0.0075 <0.0020 0.012 <0.0019 <0.091 UJPFNA UG/L 0.042 0.022 0.022 0.022 0.021 1.6 0.08 0.52PFOS UG/L 0.0077 0.0024 0.0051 0.0069 0.0034 0.043 <0.0047 <0.032 UJPFOSA UG/L <0.00094 <0.00098 <0.0012 <0.0012 <0.00099 <0.0050 <0.00093 <0.016 UJPFPEA UG/L 0.36 0.2 0.14 0.13 0.23 0.18 0.41 3PFUNA UG/L <0.00094 <0.00098 <0.0012 <0.0012 <0.00099 0.012 0.0014 <0.016

Location N08-M01D P06-M01D AA22-M01B AA25-M01C C11-M01E G04-M01E P06-M01E R10-M01E

Sample Date 7/18/2014 7/16/2014 7/22/2014 7/22/2014 7/9/2014 7/17/2014 7/18/2014 7/21/2014

Aquifer D DDDEEEE

Analyte Units Sample Type 1 1111111

PFBA UG/L 0.79 0.033 0.2 <0.0017 0.0022 0.0052 0.1 0.044PFBS UG/L 0.049 0.0022 0.0060 J <0.0019 <0.0020 <0.0021 <0.0019 0.0032 JPFDA UG/L 0.076 0.074 0.015 <0.00093 <0.00099 0.0015 <0.00094 <0.00091PFDOA UG/L <0.0023 UJ 0.021 <0.0011 UJ 0.0039 J <0.00099 <0.0010 <0.00094 <0.00091PFHPA UG/L 1.9 J 0.1 0.54 <0.00093 <0.00099 0.0029 0.072 0.031PFHXA UG/L 2.3 J 0.21 0.56 <0.00093 0.0028 0.0087 0.17 0.051PFHXS UG/L 0.0065 <0.0020 0.0031 <0.0019 <0.0020 <0.0021 <0.0019 <0.0018PFNA UG/L 0.37 0.042 0.06 <0.00093 <0.00099 <0.0010 0.0028 <0.00091PFOS UG/L 0.0076 <0.0020 0.0039 <0.0019 <0.0020 <0.0021 <0.0019 <0.0018PFOSA UG/L <0.0023 <0.0010 <0.0011 <0.00093 <0.00099 <0.0010 <0.00094 <0.00091PFPEA UG/L 1.8 J 0.094 0.46 <0.00093 0.0022 0.0046 0.079 0.042PFUNA UG/L 0.013 0.019 <0.0011 <0.00093 <0.00099 <0.0010 <0.00094 <0.00091Notes:ND = Not detected at stated reporting limit PFBA = Perfluorobutanoic Acid PFHPA = Perfluoroheptanoic Acid PFOS = Perfluoro

Sample Type 1 = Regular Sample PFBS = Perfluorobutane Sulfonic Acid PFHXA = Perfluorohexanoic Acid PFOSA = PerfluoSample Type 2 = Duplicate Sample PFDA = Perfluorodecanoic Acid PFHXS = Perfluorohexane Sulfonic Acid PFPEA = PerfluoJ = Reported value may not be accurate or precise. PFDOA = Perfluorododecanoic Acid PFNA = Perfluorononanoic Acid PFUNA = PerfluoUJ = Not detected. Reporting limit may not be accurate or precise.

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