# 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 Com p an y 

# 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 an alysis of Perfluorooctanoic Acid (PFOA) and

other perfluorinated co mpounds. DuPont sampled the wells in July 2014 in acco rdance with the

sampling and analysis plan (SAP). The well locat ions 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. Ta ble 2 lists the other pe rfluorinated compounds.

PFOA was detected at concentra tions 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 adve rsely 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: 507141Table 1Summary of Analytical ResultsPFOA Monitoring ProgramPerfluorooctanic Acid (PFOA)Second Semester 2014DuPont Chambers WorksDeepwater, New JerseyLocationF08-M01A G09-M01A K12-M01A C08-M01B C11-M03B D06-M01B D15-M01B F07-M01B F08-M01B G05-M02BSample Date07/21/2014 07/17/2014 07/17/2014 07/08/2014 07/09/2014 07/08/2014 07/10/2014 07/21/2014 07/17/2014 07/08/2014AquiferA AA B B BBBBBAnalyteUnits Sample Type1 11 1 1 11111PFOA UG/L 5.3 270 32 43 0.45 0.6 0.84 5 57 3.7LocationJ10-M02B K13-M02B K13-M02B L09-M01B N08-M01B P06-M01B P21-M01B R09-M02B R09-M02B C11-M01CSample Date07/23/2014 07/01/2014 07/01/2014 07/29/2014 07/18/2014 07/16/2014 07/03/2014 07/21/2014 07/21/2014 07/09/2014AquiferB BB B B BBBBCAnalyteUnits Sample Type1 12 1 1 11121PFOA UG/L 6.4 16 16 1.7 1.5 1.7 97 1 1.2 0.16LocationG04-M01B L09-M01C N08-M01C P06-M02C P06-M02C R10-M01C Z28-M01B Z28-M01BAA25-M01B C11-M02DSample Date07/17/2014 07/29/2014 07/18/2014 07/16/2014 07/16/2014 07/21/2014 07/22/2014 07/22/2014 07/22/2014 07/09/2014AquiferC CC C C CCCCDAnalyteUnits Sample Type1 11 1 2 11211PFOA UG/L 1.1 2.6 3.8 0.51 0.52 0.28 0.21 0.2 0.28 2.5LocationJ05-M01C L09-M01D N08-M01D P06-M01D AA22-M01BAA25-M01CC11-M01E G04-M01E P06-M01E R10-M01ESample Date07/07/2014 07/29/2014 07/18/2014 07/16/2014 07/22/2014 07/22/2014 07/09/2014 07/17/2014 07/18/2014 07/21/2014AquiferD DD D D DEEEEAnalyteUnits Sample Type1 11 1 1 11111PFOA UG/L 0.78 3.6 2.1 0.19 0.92 0.0019 0.0013 0.0088 0.062 0.017Notes:ND = Non detect at stated reporting limitPFOA = Perfluorooctanoic AcidSample Type 1 = Regular SampleSample Type 2 = Duplicate SamplePage 1 of 1 2H14 PFOA Tables \ Table 1 (PFOA)Table 2Summary of Analytical ResultsPFOA Monitoring ProgramPerfluorooctanic CompoundsSecond Semester 2014DuPont Chambers WorksDeepwater, New JerseyLocationF08-M01A G09-M01A K12-M01A C08-M01B C11-M03B D06-M01B D15-M01B F07-M01B F08-M01B G05-M02B J10-M02B K13-M02BSample Date7/17/2014 7/17/2014 7/17/2014 7/8/2014 7/9/2014 7/8/2014 7/10/2014 7/21/2014 7/21/2014 7/8/2014 7/23/2014 7/1/2014AquiferA AABBBBBBBBBAnalyteUnits Sample Type1 11111111111PFBA UG/L 65 55 <0.024 4.6 0.17 0.19 0.15 0.89 5.4 0.95 0.065 5.5 JPFBS UG/L <0.13 <0.91 0.025 0.32 0.013 0.023 0.013 0.099 J <0.015 0.38 <0.050 0.26PFDA UG/L 21 77 0.46 4.2 0.091 0.3 0.24 0.52 1.9 0.67 0.43 0.79PFDOA UG/L 0.4 <0.45 0.067 <0.031 0.013 0.026 0.0086 0.014 J 0.23 J <0.054 UJ <0.025 <0.10PFHPA UG/L 9.6 94 0.16 5.2 0.24 0.46 0.35 2.4 3.1 1.9 0.4 5.1PFHXA UG/L 87 380 0.095 31 0.51 1 0.86 7.2 14 7.1 0.8 22PFHXS UG/L <0.13 <0.91 <0.014 <0.062 0.0072 <0.0032 <0.010 <0.016 <0.015 <0.11 <0.050 <0.20PFNA UG/L 5.8 60 0.18 2 0.081 0.14 0.17 0.95 1 0.43 0.19 2PFOS UG/L <0.13 <0.91 <0.014 <0.16 0.008 0.011 <0.026 <0.014 <0.015 <0.27 <0.050 <0.50PFOSA UG/L <0.067 <0.45 <0.0070 <0.031 <0.0019 0.0017 0.0056 <0.0070 <0.0076 <0.054 <0.025 <0.10PFPEA UG/L 15 96 0.082 5.1 0.22 0.45 0.32 2.1 5.5 2.7 0.37 8PFUNA UG/L 1.1 0.49 0.07 <0.031 0.0095 0.025 0.027 0.019 0.47 <0.054 0.059 <0.10LocationK13-M02B L09-M01B N08-M01B P06-M01B P21-M01B R09-M02B R09-M02B C11-M01C G04-M01B L09-M01C N08-M01C P06-M02CSample Date7/1/2014 7/29/2014 7/18/2014 7/16/2014 7/3/2014 7/21/2014 7/21/2014 7/9/2014 7/17/2014 7/29/2014 7/18/2014 7/16/2014AquiferB BBBBBBCCCCCAnalyteUnits Sample Type2 11111211111PFBA UG/L 3.7 J 0.2 0.35 0.44 66 0.37 0.32 0.057 0.5 <0.046 5.9 0.16PFBS UG/L <0.20 <0.021 0.014 0.012 0.93 <0.010 <0.0099 0.0022 0.0093 0.0094 J 0.095 0.004PFDA UG/L 0.81 0.22 0.06 0.033 2.4 0.18 0.22 0.057 0.052 0.14 0.31 0.0093PFDOA UG/L <0.10 <0.010 <0.0022 UJ <0.0016 UJ <0.41 0.023 J 0.063 J 0.072 <0.0020 <0.0032 <0.0047 <0.0011PFHPA UG/L 4.3 0.79 0.6 0.75 61 0.39 0.41 0.089 0.47 2.3 J 2 0.33PFHXA UG/L 18 1.4 1.3 1.3 270 0.64 0.67 0.35 1.4 3.1 J 3.4 0.52PFHXS UG/L <0.20 <0.021 0.0065 <0.0033 <0.82 <0.010 <0.0099 <0.0019 <0.0057 <0.022 0.044 0.0043PFNA UG/L 1.6 0.35 0.18 0.19 4.8 0.56 0.73 0.03 0.15 0.34 2.2 0.045PFOS UG/L <0.50 <0.021 0.0051 0.0052 <2.0 <0.010 0.013 <0.0048 0.0098 0.021 0.043 0.006PFOSA UG/L <0.10 <0.010 <0.0022 0.0016 <0.41 <0.0051 <0.0050 <0.00096 <0.0020 <0.0032 <0.0047 <0.0011PFPEA UG/L 7.4 0.56 0.9 0.91 91 0.57 0.56 0.13 0.86 2.2 J 3.1 0.36PFUNA UG/L <0.10 0.018 0.0048 <0.0016 <0.41 <0.0051 0.0077 0.033 <0.0020 0.0048 0.17 <0.0011Notes:ND = Not detected at stated reporting limit PFBA = Perfluorobutanoic Acid PFHPA = Perfluoroheptanoic Acid PFOS = Perfluorooctane Sulfonic AcidSample Type 1 = Regular Sample PFBS = Perfluorobutane Sulfonic Acid PFHXA = Perfluorohexanoic Acid PFOSA = Perfluorooctane SulfonamideSample Type 2 = Duplicate Sample PFDA = Perfluorodecanoic Acid PFHXS = Perfluorohexane Sulfonic Acid PFPEA = Perfluoropentanoic AcidJ = Reported value may not be accurate or precise. PFDOA = Perfluorododecanoic Acid PFNA = Perfluorononanoic Acid PFUNA = Perfluoroundecanoic AcidUJ = Not detected. Reporting limit may not be accurate or precise.Page 1 of 22H14 PFOA Tables \ Table 2 (PFCs)Table 2Summary of Analytical ResultsPFOA Monitoring ProgramPerfluorooctanic CompoundsSecond Semester 2014DuPont Chambers WorksDeepwater, New JerseyLocationP06-M02C R10-M01C Z28-M01B Z28-M01B AA25-M01B C11-M02D J05-M01C L09-M01DSample Date7/16/2014 7/21/2014 7/21/2014 7/21/2014 7/22/2014 7/9/2014 7/7/2014 7/29/2014AquiferC CCCCDDDAnalyteUnits Sample Type2 1121111PFBA 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 <0.016LocationN08-M01D P06-M01D AA22-M01B AA25-M01C C11-M01E G04-M01E P06-M01E R10-M01ESample Date7/18/2014 7/16/2014 7/22/2014 7/22/2014 7/9/2014 7/17/2014 7/18/2014 7/21/2014AquiferD DDDEEEEAnalyteUnits Sample Type1 1111111PFBA 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 = Perfluorooctane Sulfonic AcidSample Type 1 = Regular Sample PFBS = Perfluorobutane Sulfonic Acid PFHXA = Perfluorohexanoic Acid PFOSA = Perfluorooctane SulfonamideSample Type 2 = Duplicate Sample PFDA = Perfluorodecanoic Acid PFHXS = Perfluorohexane Sulfonic Acid PFPEA = Perfluoropentanoic AcidJ = Reported value may not be accurate or precise. PFDOA = Perfluorododecanoic Acid PFNA = Perfluorononanoic Acid PFUNA = Perfluoroundecanoic AcidUJ = Not detected. Reporting limit may not be accurate or precise.Page 2 of 22H14 PFOA Tables \ Table 2 (PFCs)

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