CBIC Control Number



## OPPT -2003-0012

April22, 2015

Linda Range

NJ Depattment of Environmental Protection CHMM, Site Manager

Bureau of Case Management

401 East State Street

Mail Code 40 l-05F

Trenton

, NJ 08625-0028 

# 364952

DuPont C o rporate Remed iat ion G rou p Ches tnut Run Pl a za 7 15-24 0
97 4 Ce ntre Road
P

. O

. Box 2915

Wilm i ngton, DE 19805



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DuPont Chambers Works Complex
NJPDES-DGW Permit No. NJ0083429
PFOA Monitoring Program Groundwater Results -u ::J:**~** CN



### Dear Ms. Range:

As required by the N JPDES-DGW Permit No. NJ0083429

, DuPont samples groundwater semiannually from 36 wells across the site for analysis ofPerfluorooctanoic Acid (PFOA) and other perfluorinated compounds. DuPont sampled the wells in January 2015 in acco rdance 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 [NO (0.00099)] at well

Cll-MOlE to 600 J.lg / L at well 009-MOlA (see Table 1). The hi g he s t concentrati ons are located

in the interior of the site where groundwater is contained by the Interceptor Well System. Table 2

list s the other perfluorinated compounds.

PFOA was detected at concentrations ranging from 0.24 to 50 J.lg / 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

ba se d on previou s 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. Hattten Project Director Corporate Remediation- NJ

cc : Edward Lut z, DuPont
Sin-Kie Tjho, EPA Region 2


### File : 507141

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. du Pont de Nemours and Com pany**0~** '"OI'T! '"OC'") -i("1"1 

# n <:**~I'Tl** C'")CJTable 1Summary of Analytical ResultsPFOA Monitoring ProgramPerfluorooctanic Acid (PFOA)First Semester 2015Chambers WorksDeepwater, New JerseyLocationF08-M01A G09-M01A K12-M01A C08-M01B C11-M03B D06-M01B D15-M01B F07-M01B F08-M01B G05-M02BSample Date01/19/2015 01/19/2015 01/19/2015 01/28/2015 01/28/2015 01/26/2015 01/28/2015 01/19/2015 01/19/2015 01/26/2015AquiferA AA B B B B BBBAnalyteUnits Sample Type1 11 1 1 1 1 111PFOA UG/L 47 600 11 50 0.24 0.87 1 5 3.7 4.4LocationJ10-M02B K13-M02B K13-M02B L09-M01B N08-M01B P06-M01B P21-M01B R09-M02B R09-M02B C11-M01CSample Date01/19/2015 01/12/2015 01/12/2015 01/29/2015 01/22/2015 01/21/2015 01/14/2015 01/19/2015 01/19/2015 01/28/2015AquiferB BB B B B B BBCAnalyteUnits Sample Type1 12 1 1 1 1 121PFOA UG/L 5.6 17 18 1.4 1.2 1.6 120 3 2.9 0.25LocationG04-M01B L09-M01C N08-M01C P06-M02C P06-M02C R10-M01C Z28-M01B Z28-M01BAA25-M01B C11-M02DSample Date01/16/2015 01/29/2015 01/22/2015 01/21/2015 01/21/2015 01/20/2015 01/20/2015 01/20/2015 01/23/2015 01/28/2015AquiferC CC C C C C CCDAnalyteUnits Sample Type1 11 1 2 11 211PFOA UG/L 0.96 2 3.4 0.49 0.48 0.270.2 0.19 0.241.9LocationJ05-M01C L09-M01D N08-M01D P06-M01D AA22-M01B AA25-M01C C11-M01E G04-M01E P06-M01E R10-M01ESample Date01/26/2015 01/29/2015 01/22/2015 01/21/2015 01/23/2015 01/20/2015 01/28/2015 01/16/2015 01/16/2015 01/23/2015AquiferD DD D D D E EEEAnalyteUnits Sample Type1 11 1 1 1 1 111PFOA UG/L 0.042 2.8 1.6 0.004 0.85 <0.0012 <0.00099 0.0065 0.0580.015Notes:ND = Non detect at stated reporting limitPFOA = Perfluorooctanoic AcidSample Type 1 = Regular SampleSample Type 2 = Duplicate SamplePage 1 of 1 1H15 PFOA Tables.xls \ Table 1 (PFOA)Table 2Summary of Analytical ResultsPFOA Monitoring ProgramPerfluorooctanic CompoundsFirst Semester 2015Chambers 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 Date01/19/2015 01/19/2015 01/19/2015 01/28/2015 01/28/2015 01/26/2015 01/28/2015 01/19/2015 01/19/2015 01/26/2015 1/19/2015 01/12/2015AquiferA AABBBBBBBBBAnalyteUnits Sample Type1 11111111111PFBA UG/L 71 92 0.1 16 0.095 0.27 0.21 1.4 1.9 1 0.096 5.7PFBS UG/L <0.14 <0.98 <0.014 0.98 <0.0040 0.028 0.015 0.068 <0.014 0.19 0.13 <0.20PFDA UG/L 9.2 43 0.7 2.3 0.16 0.32 0.22 0.69 1.2 0.84 0.39 0.31PFDOA UG/L 0.08 <0.49 0.03 <0.031 0.02 0.02 0.0082 <0.0071 0.22 <0.043 <0.025 <0.10PFHPA UG/L 7.2 150 0.48 4.1 0.16 0.53 0.4 2.4 1.8 1.9 0.23 5.2PFHXA UG/L 70 690 0.37 61 0.31 1.2 0.92 10 10 7.2 0.6 31PFHXS UG/L <0.14 <0.98 <0.014 <0.062 <0.0040 <0.0030 <0.0083 <0.014 <0.014 <0.087 <0.050 <0.20PFNA UG/L 2.9 84 0.12 1.4 0.077 0.14 0.17 0.9 0.63 0.57 0.11 1.8PFOS UG/L <0.14 <0.98 <0.014 0.066 0.01 0.013 0.027 <0.014 <0.014 <0.087 <0.050 <0.20PFOSA UG/L <0.071 <0.49 <0.0071 <0.031 <0.0020 0.0017 0.0057 <0.0071 <0.0071 <0.043 <0.025 <0.10PFPEA UG/L 9.6 100 0.28 3.7 0.18 0.49 0.34 1.9 1.7 2.3 0.14 6.7PFUNA UG/L 0.33 <0.49 0.19 0.091 0.023 0.084 0.035 0.029 0.45 0.089 0.061 <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 Date01/12/2015 01/29/2015 01/22/2015 01/21/2015 01/14/2015 01/19/2015 01/19/2015 01/28/2015 01/16/2015 01/29/2015 01/22/2015 01/21/2015AquiferB BBBBBBCCCCCAnalyteUnits Sample Type2 11111211111PFBA UG/L5.8 0.18 0.38 0.38 64 0.59 0.57 0.085 0.46 0.53 5 0.17PFBS UG/L0.21 0.47 0.0096 0.0086 <0.97 <0.0099 <0.0099 0.0036 0.0041 0.082 0.064 0.002PFDA UG/L0.36 0.26 0.073 0.045 0.97 0.27 0.24 0.09 0.051 0.092 0.25 0.011PFDOA UG/L<0.10 <0.010 <0.0025 <0.0017 <0.49 <0.0050 <0.0049 0.068 <0.0020 <0.0032 <0.0049 <0.0010PFHPA UG/L5.1 0.65 0.52 0.65 58 0.8 0.8 0.1 0.41 1.4 J 2.1 0.3PFHXA UG/L29 1.2 1.2 1.2 300 1.7 1.6 0.33 1.3 2.0 J 2.2 0.43PFHXS UG/L<0.20 <0.020 0.0058 <0.0033 <0.97 <0.0099 <0.0099 <0.0022 <0.0039 <0.0098 0.023 <0.0029PFNA UG/L1.8 0.32 0.12 0.18 5.1 0.67 0.67 0.059 0.12 0.25 1.6 0.052PFOS UG/L<0.20 <0.020 <0.0049 0.0066 <0.97 0.015 J 0.012 0.0043 0.004 0.019 0.067 0.0077PFOSA UG/L<0.10 <0.010 <0.0025 <0.0017 <0.49 <0.0050 <0.0049 <0.0010 <0.0020 <0.0032 <0.0049 <0.0010PFPEA UG/L6.9 0.43 0.58 0.65 60 0.97 0.83 0.12 0.57 0.87 J 1.8 0.27PFUNA UG/L<0.10 0.018 0.0048 <0.0017 <0.49 <0.0050 <0.0049 0.039 <0.0020 0.0039 0.17 <0.0010Notes:= 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 = Perfluorouecanoic AcidUJ = Not detected. Reporting limit may not be accurate or precise.Page 1 of 21H15 PFOA Tables.xls \ Table 2 (PFCs)Table 2Summary of Analytical ResultsPFOA Monitoring ProgramPerfluorooctanic CompoundsFirst Semester 2015Chambers WorksDeepwater, New JerseyLocationP06-M02C R10-M01C Z28-M01B Z28-M01B AA25-M01B C11-M02D J05-M01C L09-M01DSample Date01/21/2015 01/20/2015 01/20/2015 01/20/2015 01/23/2015 01/28/2015 01/26/2015 01/29/2015AquiferC CCCCDDDAnalyteUnits Sample Type2 1121111PFBA UG/L0.19 0.088 0.051 0.056 0.082 0.14 0.03 1.9PFBS UG/L<0.0020 <0.0038 0.0028 <0.0025 <0.0019 0.017 <0.0019 0.28PFDA UG/L0.0097 0.0065 0.0018 0.0017 0.0036 0.087 0.006 0.051PFDOA UG/L<0.00099 <0.0010 <0.0013 <0.0012 <0.00097 <0.0039 0.0021 <0.017PFHPA UG/L0.31 0.13 0.087 0.097 0.13 0.14 0.021 2.6 JPFHXA UG/L0.42 0.26 0.19 0.18 0.27 0.47 0.07 5.1 JPFHXS UG/L0.0033 <0.0020 0.0071 0.0073 0.0051 <0.011 <0.0019 <0.034PFNA UG/L0.049 0.021 0.021 0.019 0.023 0.98 0.002 0.32PFOS UG/L0.0084 0.0029 0.01 0.0086 0.0069 0.035 <0.0019 <0.034PFOSA UG/L<0.00099 <0.0010 <0.0013 <0.0012 <0.00097 <0.0039 <0.00096 <0.017PFPEA UG/L0.26 0.13 0.075 0.09 0.14 0.13 0.047 1.8 JPFUNA UG/L<0.00099 <0.0010 <0.0013 <0.0012 <0.00097 0.019 <0.00096 <0.017LocationN08-M01D P06-M01D AA22-M01B AA25-M01C C11-M01E G04-M01E P06-M01E R10-M01ESample Date01/22/2015 01/21/2015 01/23/2015 01/20/2015 01/28/2015 01/16/2015 01/16/2015 01/23/2015AquiferD DDDEEEEAnalyteUnits Sample Type1 1111111PFBA UG/L0.68 0.0096 0.22 <0.0010 <0.00099 <0.0027 0.077 0.044PFBS UG/L0.047 <0.0020 0.0032 <0.0020 <0.0020 <0.0020 0.0079 <0.0020PFDA UG/L0.071 <0.0010 0.019 <0.0010 <0.00099 <0.00098 <0.0010 <0.00099PFDOA UG/L<0.0025 <0.0010 <0.0011 <0.0010 <0.00099 <0.00098 <0.0010 <0.00099PFHPA UG/L1.6 0.0052 0.48 <0.0010 <0.00099 0.001 0.057 0.025PFHXA UG/L1.6 0.011 0.68 <0.0010 <0.00099 0.0064 0.15 0.05PFHXS UG/L0.0069 <0.0020 0.0021 <0.0020 <0.0020 <0.0020 <0.0025 <0.0020PFNA UG/L0.27 <0.0010 0.064 <0.0010 <0.00099 <0.00098 0.0022 <0.00099PFOS UG/L0.0075 J <0.0020 0.0061 <0.0020 <0.0020 <0.0020 <0.0020 <0.0020PFOSA UG/L<0.0025 <0.0010 <0.0011 <0.0010 <0.00099 <0.00098 <0.0010 <0.00099PFPEA UG/L1.2 0.0053 0.43 <0.0010 <0.00099 <0.0010 0.05 0.027PFUNA UG/L0.016 <0.0010 <0.0011 <0.0010 <0.00099 <0.00098 <0.0010 <0.00099Notes:= 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 = Perfluorouecanoic AcidUJ = Not detected. Reporting limit may not be accurate or precise.Page 2 of 21H15 PFOA Tables.xls \ Table 2 (PFCs)

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