# Status Report on PFOA Emissions Reductions and D ata Summary for 20 1 3 DuPont Chambers Works Deepwater, New Jersey

Date: June 201 4 Project No.: 1898 6348 .1 4 001

URS Corporation

DuPont Chambers Works Ro ute 130 and Canal Road Deepwater, New Jersey 08023Status Report on PFOA Emissions Reductions and Data Summary for 2013 

### Table of Contents

StatusReportonPFOA_2013 i Deepwater, NJ 

# Table of Contents

1.0 Introduction

................................ ................................ ................................ ................. 1

2.0 Site Setting at Chambers Works

................................ ................................ ................. 3

3.0 Data Analysis

................................ ................................ ................................ .............. 5

4.0 Site Wastewater Treatment System Sampling and Results

................................ ........ 6 4.1 Sample Collection

................................ ................................ .............................. 6 4.2 Data Quality

................................ ................................ ................................ ....... 6 4.3 Chambers Works Wastewater Sampling Results

................................ ............... 6

5.0 Salem Canal Surface Water Sampling

................................ ................................ ........ 8 5.1 Sample Collection

................................ ................................ .............................. 8 5.2 Data Quality

................................ ................................ ................................ ....... 8 5.3 Salem Canal Results

................................ ................................ .......................... 8 5.3.1 Surface Water Results

................................ ................................ .......... 8

6.0 Sanitary Water

................................ ................................ ................................ ............ 9 6.1.1 Sample Collection

................................ ................................ ................ 9 6.1.2 Data Quality

................................ ................................ ......................... 9 6.1.3 Results

................................ ................................ ................................ .. 9

7.0 Re ferences

................................ ................................ ................................ ................. 10 Figures Figure 1 Site Location Map
Figure 2 662 Sample L ocation
Figure 3 662 Monthly Average for 2005 thr ough 201 3 ( lbs./ day)
Figure 4 662 Monthly Average for 20 1 3 ( lbs. /day)
Figure 5 Salem Canal Surface

- Water Sam ple Locations
Figure 6 Sanitary Water Sample Location

Tables

Table 1 Average Monthly PFOA Concentrations and Mass Loadings

Table 2 Surface Water Sampling Results

Table 3 Sanitary Water Sampling Results

Appendices Appendix A Summary of PFOA Results at 66 2 January

– December 20 1 3Status Report on PFOA Emissions Reducti ons and Data Summary for 2013 

### Introduction

StatusReportonPFOA_2013 1 Deepwater, NJ 

# 1.0 Introduction

The DuPont Chambers Works C omplex in Salem County, New Jersey has been reducing emissions of perfluorooctanoic acid (PFOA) t o the environment through process improvements and source elimination. In 2003 , a comprehens ive study on the environmental emissions from Chambers Works was conducted as part of a voluntary Letter of Intent (LOI) submitted by the Telomer Research Program to the U.S. Environmental Protection Agency (EPA). The results of this study were reported to New Jersey Department of Environmental Protection ( NJDEP ) and EPA in the DuPont Telomer Manufacturing Sites: Environmental Assessment of PFOA Levels in Air and Water, September 2003 (DuPont, 2003). The study assessed surface

- water emissions to the Delawar e River, conducted air dispersion modeling of potential sources, and assessed levels in groundwater and surface waters adjacent to the site. The 2003 report evaluated the results of the study using the West Virginia Screening Levels as established by the C 8 Assessment of Toxicity Team (CATT) (West Virginia Department of Environmental Protection )

. The report showed that surface water and calculated fenceline air concentrations were well below the CATT established screening levels. In January 2005, Chambers Works implemented a sampling program to measure the effectiveness of the reduction efforts and to identify program areas that need additional focus. The focus of the sampling program was on wastewater emissions. In January 2006, DuPont committed to partic ipate in the EPA 2010/15 PFOA Stewardship Program. Chambers Works is an important part of the DuPont commitment to reduce emissions of PFOA globally.

In 2007

, Chambers Works continued their emission reduction program resulting in a 9 5 % reduction in PFOA e missions from the site since 2000.

In 2008, Chambers Works continued to reduce emissions by implementing multiple reduction program s resulting in a >97% reduction since 2000

. Continuing through 201 3

, DuPont has maintained their commitment to reduce emiss ions. The sampling program has identified emissions at the process level . After investigating these sources, DuPont was able to l imit or further reduce sources that enter the
wastewater stream by implementing process modifications and updating operating
pr ocedures , resulting in a 99% reduction since 2000

. This data report compiles the data collected and summarizes data trends at the primary New Jersey Pollutant Discharge Elimination System (NJPDES) permitted outfall DSN662. Ongoing investigations were cond ucted on the Salem Canal and p lant s anitary w ater

. D ata for these investigations are also reported here. This data report includes the following sections:

 Section 2.0 presents the site setting at Chambers Works

.

 Section 3.0 presents the data analysis

.Status Report on PFOA Emissions Reductions and Data Summary for 2013 

### Introduction

StatusReportonPFOA_2013 2 Deepwater, NJ 

###  Sec tion 4.0 presents the wastewater treatment system sampling and results

.

 Section 5 .0 presents the Salem Canal sampling and results

.

 Section 6 .0 presents the sanitary water sampling and results

.Status Report on PFOA Emissions Reductions and Data Summary for 2013 

### Site Setting at Chambers Works

StatusReportonPFOA_2013 3 Deepwater, NJ 

# 2.0 Site Setting at Chambers Works

DuPont Chambers Works, located i n Deepwater, New Jersey near the Delaware Memorial Bridge, has manufactured a variety of industrial compounds over the past 95 years (see Figure 1). Today

, the site produces approximately 400 different products. The manufacturing site is approximately 600 acres, boun ded by a non

- manufacturing area that includes a DuPont owned and maintained wildlife habitat to the north, the Delaware River to the west, the Salem C anal to the south, and the Deepwater community to the
east.
Since the 1970s

, the site has opera ted a groundwater containment system. The most significant portion of the groundwater containment system is the Interceptor Well System (IWS) that withdraws a monthly daily average of at least 1. 0 million gallons of groundwater from the underlying aquifers and pumps the water to the site wastewater treatment plant (WWTP) for treatment. The IWS maintains an inward hydraulic gradient over most of the site to prevent off

- site migration of groundwater. As demonstrated by

over 20 years of compliance monitoring u nder a NJPDES Discharge to Ground w ater (DGW) permit, operation of the IWS ensures that groundwater on the site does not flow toward private or public

- water supply wells in the region. PFOA is associated with the following process areas at the site :

 Fluoroe lastomers (DP P ) : PFOA is used as a polymerization aid in the manufacture of perfluoroelastomers. In 2001, the use of PFOA in the standard fluoroelastomers was discontinued ; and in 2004

, a carbon treatment system was installed to treat washwaters and proces s cleanouts for the specialty fluoroelastomer and perfluoroelastomer manufacturing process. By the end of 2013, the use of PFOA was discontinued in all perfluoroelastomer manufacturing
processes.

 Fluorotelomers: PFOA is present in trace quantities as an un intended by

- product in portions of the fluorotelomer manufacturing process. Fluorot elomer chemistry is not made with PFOA, nor is PFOA added during fluoro telomer manufacture. The presence of PFOA in fluorotelomer intermediates

, while low

, is highly variabl e from not

- quantifiable to parts per million. The transition to short

- chain fluorotelomer chemistry (that cannot break down to PFOA in the environment) will be completed by the end of 2014.

 Chambers Works WWTP: On March 31, 2012 DuPont Chamber s Works exite d its commercial waste treatment business and is no longer accepting commercial
wastewater streams. Since 2003, many PFOA containing wastewater streams to the WWTP have been eliminated through treatment at the generation site or by finding an alternative
t reatment. In addition

, PFOA remains present in wastewaters from the Chambers Works on

- site landfill leachate and groundwater treatment system due to prior activities

.Status Report on PFOA Emissions Reductions and Data Summary for 2013 

### Site Setting at Chambers Works

StatusReportonPFOA_2013 4 Deepwater, NJ 

###  The on

- site Leveraged Analytical Services ( LAS ) processes some samples containing PFOA for analytical purposes.Status Report on PFOA Emissions Reductions and Data Summary for 2013 

### Data Analysis

StatusReportonPFOA_2013 5 Deepwater, NJ 

# 3.0 Data Analysis

Analysis of PFOA was performed by several laboratories including; the on

- site DuPont LAS ( formerly RAS) , Test America Laboratories

– Denver (TA

- Denver), Axys Analytical, Critical Path Services (CP)

, and MPI Research

, I nc . All samples are analyzed according to a laboratory s tandard o perating procedure (SOP). The analytical method

uses a liquid chromatography/tandem mass spectrometry (LC/MS/MS). The analytical methodology for Chambers Works wastewater was updated in Marc h 2006 (due to differences between MPI Research and DuPont LAS ) and June 2007 (to decrease sample run time by taking advantage of new “rapid resolution” columns from Agilent Technologies). Data collected prior to March 2006 employed a methodology typically used for the analysis of PFOA in drinking water. However, due to the complex matrix of the various Chambers Works wastewater streams, a more robust method was developed. Upgrades in March 2006 include a longer gradient to allow for better separation

, use of an internal standard (dual

- labeled 13C PFOA, M+2) to compensate for matrix effects

, and a higher column temperature to increase peak resolution. Upgrades made in June 2007 include d the use of a shorter method and a rapid resolution column. This method h as the same resolution as the old method and is cross validated by using a 3 x 3 x 3 matrix.

Th is method has been validated for samples collected at Chambers Works. The validation of the PFOA data is performed by a group of chemists (DuPont ADQM) who verif y that hold times, matrix spikes, and all lab oratory quality controls are followed. T he data are then certified and entered into an electronic database

. The PFOA results in wastewater are presented in this report for comparison purposes and are believed to be adequate for showing overall PFOA emission reductions. T he LAS data ha ve been used for all 201 3 wastewater calculations of sample S pot 662 in this report

. Samples from the s anitary water w ere analyzed by MPI Research

. T he Canal Intak e sample s w ere anal yzed by TA

- Denver

. The weekly 662

- GRAB sample was analyzed by CP. All samples were collected and analyzed according to the DuPont Quality Assurance Project Plan (QAPP) with Sampling and Analysis Plan (S AP) submitted in Appendix A of the Status Report on PF OA Emissions Reductions and Data Summary for 2007 (DuPont, 2008 )

.Status Report on PFOA Emissions Reductions and Data Summary for 2013 

### Site Wastewater Treatment System Sampling and Results

StatusReportonPFOA_2013 6 Deepwater, NJ 

# 4.0 Site Wastewater Treatment System Sampling and Results

4.1 Sample Collection

The focus of th is sampling program is to measure wastewater emissions from the site

. The Chambers Works primary outfa ll consists of two NJPDES monitored discharge locations (Permit No. NJ0005100)

. Up until September 2011, DSN001 measure d the combination of the effluent from the WWTP (DSN662), non

- process area site stormwater, and non

- contact cooling water. In September 2 011, a new outfall location, DSN002, was put into service, replacing DSN001. D SN001 is now used only for stormwater per the recently renewed NJPDES permit. DSN662 (662) measures only treated effluent from the WWTP . DSN002 currently measures the combination of the effluent from the WWTP (DSN662), and non

- contact cooling water (see Figure 2).

DSN662 has been previously shown to be sta tistically equivalent to D SN001 ( DuPont
, 2006 ). A second check was conducted in May 2007 to confirm that the two outfalls were statistically equivalent. R esults from 662 are currently used to represent Chambers Works total wastewater emissions. Beginning in 20 1 1

, the sampling program for PFOA at the site was to collect three samples a week : two 48

- hour composite samples and a 72

- hour composite sample while still collecting one grab sample every Monday. This 48

- , 48

- , 72

- hour schedule enabled DuPont to pinpoint and understand process related spikes to identify the low

- level sources of PFOA to wastewater a t the process level, which helped in reduction efforts. Sample collection remained unchanged through 201 3

. 

## 4.2 Data Quality
Sample location 662 is a NJPDES permitted monitoring location. Sample collection was straightforward and consistently achieved. Furthermore, accurate flow measurem ents can be recorded and are used to calculate lbs/day discharge rates. All samples were collected, analyzed , and validated according to the QAPP/SAP. At sample locations upstream of 662, particularly those associated with regional tanks, it

was , at times

, more difficult to obtain a representative sample. The data from these internal locations were used for qualitative comparisons on relative contributions from the area. The data from the internal locations w ere not accurate enough for quantitative

assessm ents. This upstream data are used strictly for internal evaluation and review and therefore are not included in this report but are available upon request.


## 4.3 Chambers Works Wastewater Sampling Results
Table 1 shows the average monthly PFOA concentrations at 662 for the study period. The data presented from January 200 6 to December 20 1 3 are the calculated average monthly value based on 662 concentration measurements. The estimated mass loading s are based on the 662 flow measurements.Status Report on PFOA Emissions Reductions and Data Summary for 2013 

### Site Wastewater Treatment System Sampling and Results

StatusReportonPFOA_2013 7 Deepwater, NJ 

### As shown in Table 1, aver age daily discharge of PFOA from Chambers Works
wastewater treatm ent plant decreased significantly from 200 6 to 201 3

. The actual a verage daily discharge in 20 1 3 was 0. 19 lbs /day

. Figure 3 shows the reduction in lbs/day from 2006 thr ough 20 1 3

. This figure shows the lbs/day discharge rates of 0. 19 lbs /day

. Figure 4 plots the monthly average PFOA concentrations at 662 for 20 1 3

. The actual 20 1 3 discharge is 70.49 lbs / year

. The 662 data t ables are located in Appendix A

.Status Report on PFOA Emissions Reductions and Data Summary for 2013 

### Salem Canal Surface Water Sampling

StatusReportonPFOA_2013 8 Deepwater, NJ 

# 5.0 Salem Canal Surface Water Sampling

5.1 Sam ple Collection
Quarterly samples were collected to track PFOA in the plant intake. Samples were collected from the plant intake (Canal Intake) a s shown i n F igure 5

. Samples were collected from Canal Intake location by using a programmable sampler (ISCO). T he sampler is programmed to collect a sample every hour for a 24

- hour period on the last Friday of the quarter

. Four samples were collected and submitted to TA

- Denver for analysis.



## 5.2 Data Quality
Sample collection was straightforward and consistently achiev ed. All samples were collected, analyzed, and validated according to the QAPP/ SAP

. Samples from the Canal Intake location were analyzed for PFOA by T A

- Denver.



## 5.3 Salem Canal Results

5.3.1 Surface Water Results

Results from th e surface water sampling appear in Tab le 2 . The results show that during this monitoring period, the surface water concentrations of PFOA in the Salem Canal ranged from 0. 0 44 micrograms per liter ( μg/L) to 0. 1 6 μg/L

.Status Report on PFOA Emissions Reductions and Data Summary for 2013 

### Sanitary Water

StatusReportonPFOA_2013 9 Deepwater, NJ 

# 6.0 Sanitary Water

The plant sanitary water supply is pulled from the Salem Can al and treated at the on

- site water treatment plant ( PWS ID # NJ1708300 ). Water from Salem Canal is treated for solids, iron

, and bacteria , followed by two bed s of granular activated carbon (GAC) in series for Trihalomethanes (THMs) removal prior to distrib ution to the plant.

6.1.1 Sample Collection
Samples were collected from the a fter c arbon location by using a programmable sampler ( see Figure 6 ). The sampler is programmed to collect a sample every hour for a 24

- hour period

. Fifty

- two s amples were collected and submitted to MPI Research Inc. for analysis

.

6.1.2 Data Quality
Samples from the a fter c arbon location were analyzed for PFOA by MPI Research

. Sample collection was straightforward and consistently achieved. All samples were collected, analyzed, and validated according to the QAPP/ SAP.

6.1.3 Results
Results from sanitary sampling are presented in Table 4

. During the 20 1 3 sampling, PFOA concentrations in the treated After Carbon samples ranged from N D ( 0.00 11 μg/L )
to 0. 0 9 3 μg/L

. The 20 1 3 average was 0.0 2 5 μg/L

.Status Report on PFOA Emissions Reductions and Data Summary for 2013 

### References

StatusReportonPFOA_2013 10 Deepwater, NJ 

# 7.0 Re ferences

DuPont. 2012. PFOA Surface Water Emissions Reductions Status Report and Data Summary for 2011, URS Project No. 1898 6208 . September 2012

DuPont. 2011. PFOA Surface Water Emissions Reductions Status Report and Data Summary for 2010, URS Project No. 18986014 . September 2011

DuPont. 2010. PFOA Surface Water Emissions Reductions Status Report and Data Summary for 2009, URS Project No. 18985 814 . May 2010

DuPont. 2009. PFOA Surface Water Emissions Reductions Status Report and Data Summary for 2008, DuPont CRG Project No. 509171 / URS Project No. 18985386. May 2009

DuPont. 2008. PFOA Surface Water Emissions Reductions Status Report and Data Summary for 2007, DuPont CRG Project No. 508501/ 509171

- URS Project No. 18983843/ 18985386. June 2008

DuPont. 200 7

. PF OA Surface Water Emissions Reductions Status Report and Data Summary for 2006, DuPont CRG Project No. 508501

- URS Project No. 18983843. June 200 7

DuPont. 2003. DuPont Telomer Manufacturing Sites: Environmental Assessment of PFOA Levels in Air and Water, Se ptember 2003, DuPont CRG Project No. 508501

- 18983843. 2003.

Prevedouros, Konstantinos, Ian T. Cousins, Robert C. Buck, and Stephen Korzeniowski. 2006. Sources, Fate and Transport of Perfluorocarboxylates, Environmental Science and Technology, Vol. 40, No. 1., 2006.

West Virginia Department of Environmental Protection. 2002a. C8 Assessment of Toxicity Team (CATT) Aquatic Life Advisory concentration for C8, October 2002.

West Virginia Department of Environmental Protection. 2002b. Final Ammonium Perfluoroctan oate (C8) Assessment of Toxicity (CATT) Report, August 2002.

# TablesTable 1 Average Monthly PFOA Concentrations and Mass Loadings Status Report on PFOA Emissions Reductions and Data Summary for 2013 DuPont Chambers Works

Deepwater, New Jersey

* Limited production Page 1 of 1 Table 1_2013 Avg Mthly Concent & Mass Loadings DSN662

Conc. Estimated Mass DSN662 Conc. Estimated Mass ug/L lbs/day ug/L lbs/day 2006 Jan-06 26 3.74 2010 Jan-10 18.08 1.82 Feb-06 27.7 3.15 Feb-10 9.53 0.91 Mar-06 36.2 3.54 Mar-10 14.42 1.33 Apr-06 51 5.51 Apr-10 9.59 0.85 May-06 39 3.29 May-10 8.75 0.75 Jun-06 55.8 4.17 Jun-10 15 1.17 Jul-06 40 4.43 Jul-10 25.35 2.12 Aug-06 70 5.62 Aug-10 12.3 0.98 Sep-06 66 7.57 Sep-10 10.53 0.87 Oct-06 58 5.28 Oct-10 16.94 1.1 Nov-06 98 6.76 Nov-10 7.35 0.55 Dec-06 39 4.1 Dec-10 18.56 1.47 2007 Jan-07 66.3 6.48 2011 Jan-11 25.29 2.11 Feb-07 56.8 5.39 Feb-11 10.50 0.86 Mar-07 65.3 6.26 Mar-11 10.29 0.84 Apr-07 44.6 4.47 Apr-11 8.41 0.68 May-07 30.9 2.74 May-11 5.72 0.45 Jun-07 41.2 3.59 Jun-11 6.35 0.48 Jul-07 24.3 2.35 Jul-11 4.35 0.35 Aug-07 31.1 3.01 Aug-11 5.05 0.43 Sep-07 58.1 4.48 Sep-11 7.02 0.51 Oct-07 40.6 3.71 Oct-11 4.38 0.34 Nov-07 20.3 1.9 Nov-11 4.63 0.37 Dec-07 23.5 2.33 Dec-11 4.19 0.33 2008 Jan-08 30.3 3.01 2012 Jan-12 2.46 0.20 Feb-08 41.8 4.2 Feb-12 2.31 0.19 Mar-08 43.1 4.12 Mar-12 2.69 0.20 Apr-08 18.6 1.72 Apr-12 2.38 0.17 May-08 18.1 1.7 May-12 2.27 0.15 Jun-08 30.4 2.87 Jun-12 2.85 0.19 Jul-08 25.1 2.49 Jul-12 2.54 0.19 Aug-08 21.1 1.99 Aug-12 2.43 0.17 Sep-08 19.2 1.7 Sep-12 3.08 0.19 Oct-08 13.1 1.19* Oct-12 1.08 0.07 Nov-08 10.2 0.86* Nov-12 1.23 0.08 Dec-08 7.6 0.69* Dec-12 2.27 0.16 2009 Jan-09 3.5 0.3 2013 Jan-13 1.04 0.07 Feb-09 4.1 0.36 Feb-13 3.25 0.21 Mar-09 4.4 0.36 Mar-13 2.62 0.19 Apr-09 5.7 0.45 Apr-13 2.69 0.19 May-09 8.2 0.69 May-13 2.29 0.14 Jun-09 13.4 1.1 Jun-13 3.33 0.23 Jul-09 10.8 0.8 Jul-13 3.14 0.22 Aug-09 10.7 0.89 Aug-13 4.77 0.32 Sep-09 12.5 0.97 Sep-13 3.92 0.26 Oct-09 14.4 1.25 Oct-13 2.85 0.18 Nov-09 21.2 1.69* Nov-13 2.00 0.12 Dec-09 28.4 2.39* Dec-13 3.00 0.21 Year Month Year MonthTable 2 Surface Water Sampling Results Status Report on PFOA Emissions Reductions and Data Summary for 2013 DuPont Chambers Works

Deepwater, New Jersey

Page 1 of 1 Table 2_2013 SW Canal 5/30/2014 Location CANAL INTAKE CANAL INTAKE CANAL INTAKE CANAL INTAKE Total (T)/ Sample Date 03/28/2013 06/28/2013 09/27/2013 12/27/2013 Analyte Units Diss. (D) Duplicate 1 1 1 1

PFOA UG/L T 0.0828 0.044 0.16 J 0.1

Note: J = The sample result is considered to be estimated due to a poor lab spike recovery. Canal Intake is analyzed by Test America - Denver.Table 3 Sanitary Water Sampling Results Status Report on PFOA Emissions Reductions and Data Summary for 2013 DuPont Chambers Works

Deepwater, New Jersey

Page 1 of 1 Table 3_2013 Aftercarbon 5/30/2014 Location AFTERCARBON AFTERCARBON AFTERCARBON AFTERCARBON AFTERCARBON AFTERCARBON AFTERCARBON AFTERCARBON AFTERCARBON AFTERCARBON Analyte Sample Date 01/02/2013 01/02/2013 01/09/2013 01/16/2013 01/23/2013 01/30/2013 02/06/2013 02/06/2013 02/13/2013 02/20/2013 (Total) Units Sample Purpose 1 2 1 1 1 1 1 2 1 1 PFOA UG/L 0.0039 ND (0.0039) ND (0.0039) NQ (<0.02) NQ (<0.02) NQ (<0.02) 0.019 0.02 0.015 0.027

Location AFTERCARBON AFTERCARBON AFTERCARBON AFTERCARBON AFTERCARBON AFTERCARBON AFTERCARBON AFTERCARBON AFTERCARBON AFTERCARBON Analyte Sample Date 02/27/2013 03/06/2013 03/06/2013 03/13/2013 03/20/2013 03/27/2013 04/03/2013 04/03/2013 04/10/2013 04/17/2013 (Total) Units Sample Purpose 1 1 2 1 1 1 1 2 1 1 PFOA UG/L ND (0.0024) NQ (<0.0055) NQ (<0.0055) NQ (<0.0055) 0.0088 ND (0.0011) NQ (<0.0055) NQ (<0.0055) NQ (<0.0055) NQ (<0.0055)

Location AFTERCARBON AFTERCARBON AFTERCARBON AFTERCARBON AFTERCARBON AFTERCARBON AFTERCARBON AFTERCARBON AFTERCARBON AFTERCARBON Analyte Sample Date 04/24/2013 05/01/2013 05/01/2013 05/08/2013 05/15/2013 05/22/2013 05/29/2013 06/05/2013 06/05/2013 06/12/2013 (Total) Units Sample Purpose 1 1 2 1 1 1 1 1 2 1 PFOA UG/L ND (0.0011) 0.0073 ND (0.00086) 0.035 0.039 0.062 0.05 0.023 J 0.04 J ND (0.001)

Location AFTERCARBON AFTERCARBON AFTERCARBON AFTERCARBON AFTERCARBON AFTERCARBON AFTERCARBON AFTERCARBON AFTERCARBON AFTERCARBON Analyte Sample Date 06/19/2013 06/26/2013 07/03/2013 07/03/2013 07/10/2013 07/17/2013 07/24/2013 07/31/2013 08/07/2013 08/07/2013 (Total) Units Sample Purpose 1 1 1 2 1 1 1 1 1 2 PFOA UG/L 0.052 0.07 0.076 J 0.053 J 0.06 ND (0.001) ND (0.001) 0.0082 0.13 J 0.093 J

Location AFTERCARBON AFTERCARBON AFTERCARBON AFTERCARBON AFTERCARBON AFTERCARBON AFTERCARBON AFTERCARBON AFTERCARBON AFTERCARBON Analyte Sample Date 08/14/2013 08/21/2013 08/28/2013 09/04/2013 09/04/2013 09/11/2013 09/18/2013 09/25/2013 10/02/2013 10/02/2013 (Total) Units Sample Purpose 1 1 1 1 2 1 1 1 1 2 PFOA UG/L 0.085 0.055 0.08 0.093 J 0.031 J 0.036 0.039 0.015 ND (0.0050) ND (0.0050)

Location AFTERCARBON AFTERCARBON AFTERCARBON AFTERCARBON AFTERCARBON AFTERCARBON AFTERCARBON AFTERCARBON AFTERCARBON AFTERCARBON Analyte Sample Date 10/09/2013 10/16/2013 10/23/2013 10/30/2013 11/06/2013 11/06/2013 11/13/2013 11/20/2013 11/27/2013 12/04/2013 (Total) Units Sample Purpose 1 1 1 1 1 2 1 1 1 1 PFOA UG/L ND (0.0050) 0.025 0.011 ND (0.0050) 0.0082 J 0.019 J 0.014 0.016 0.015 0.02

Location AFTERCARBON AFTERCARBON AFTERCARBON AFTERCARBON Analyte Sample Date 12/04/2013 12/11/2013 12/18/2013 12/26/2013 (Total) Units Sample Purpose 2 1 1 1 PFOA UG/L 0.02 0.012 0.024 0.031

Note: ND = Not detected at stated reporting limit NQ = Not quantifiable J = The sample result is considered to be estimated due to a poor lab spike recovery. After Carbon is analyzed by MPI Research

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Surface Water Emissions, Status Report on PFOA

2 Deepwater, New Jersey DuPont Chambers WorksFigure 3 662 Monthly Average by Month (Jan 2006 - Dec 2013) Status Report on PFOA Emissions Reductions and Data Summary for 2013 DuPont Chambers Works

Deepwater, New Jersey

0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0

January

February March April May June July August September October

November December
Year Lbs/day

Month 2013 = 0.19 lbs/day

2012 = 0.16 lbs/day

2011 = 0.68 lbs/day

2010 = 1.18 lbs/day

2009 = 0.92 lbs/day

2008 = 2.21 lbs/day

2007 = 3.90 lbs/day

2006 = 4.87 lbs/dayFigure 4 662 Monthly Average for 2013 (lbs/day) Status Report on PFOA Emissions Reductions and Data Summary for 2013 DuPont Chambers Works

Deepwater, New Jersey

0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40

1 2 3 4 5 6
7
8
9

10

11

12 Year Lbs/day

Month 2013



### 2013 Actual 0.19 lbs/day 70.49 lbs/yearand Data Summary-2013

PFOA Emissions, Reductions, Status Report on

5 Deepwater, New Jersey DuPont Chambers Worksand Data Summary-2013

PFOA Emissions, Reductions, Status Report on

6

# Appendix A

Summary of PFOA Results at 662 January

– December 2013Appendix A Summary of PFOA Results at 662 January - December 2013 Status Report on PFOA Emissions Reductions and Data Summary for 2013 DuPont Chambers Works

Deepwater, New Jersey

662 is analyzed by DuPont LAS 662-Grab is analyzed by Critical Path (CP) Page 1 of 3 Appendix A_662 5/30/2014 Location CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 Sample Date 1/2/2013 1/4/2013 1/7/2013 1/9/2013 1/11/2013 1/14/2013 1/16/2013 1/18/2013 1/21/2013 1/23/2013 1/25/2013 1/28/2013 Analyte Units Duplicate 1 1 1 1 1 1 1 1 1 1 1 1 PFOA UG/L 0.5 0.5 2 0.5 0.5 0.5 0.5 1 1 0.5 1 2

Location CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 Sample Date 1/30/2013 2/1/2013 2/4/2013 2/6/2013 2/8/2013 2/11/2013 2/13/2013 2/15/2013 2/18/2013 2/20/2013 2/22/2013 2/25/2013 Analyte Units Duplicate 1 1 1 1 1 1 1 1 1 1 PFOA UG/L 3 4 3 3 2 2 2 4 7 5 3 2

Location CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 Sample Date 2/27/2013 3/1/2013 3/4/2013 3/6/2013 3/8/2013 3/11/2013 3/13/2013 3/15/2013 3/18/2013 3/20/2013 3/22/2013 3/25/2013 Analyte Units Duplicate 1 1 1 1 1 1 1 1 1 1 PFOA UG/L 2 2 3 3 2 2 3 3 3 3 3 3

Location CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 Sample Date 3/27/2013 3/29/2013 4/1/2013 4/3/2013 4/5/2013 4/8/2013 4/10/2013 4/12/2013 4/15/2013 4/17/2013 4/19/2013 4/22/2013 Analyte Units Duplicate 1 1 1 1 1 1 1 1 1 1 PFOA UG/L 2 2 2 2 3 2 3 3 3 2 3 3

Location CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 Sample Date 4/24/2013 4/26/2013 4/29/2013 5/1/2013 5/3/2013 5/6/2013 5/8/2013 5/10/2013 5/13/2013 5/15/2013 5/17/2013 5/20/2013 Analyte Units Duplicate 1 1 1 1 1 1 1 1 1 1 PFOA UG/L 2 4 3 3 3 2 2 2 2 2 2 2

Location CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 Sample Date 5/22/2013 5/24/2013 5/27/2013 5/29/2013 5/31/2013 6/3/2013 6/5/2013 6/7/2013 6/10/2013 6/12/2013 6/14/2013 6/17/2013 Analyte Units Duplicate 1 1 1 1 1 1 1 1 1 1 1 1 PFOA UG/L 2 3 3 2 2 2 3 3 4 4 4 3

Location CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 Sample Date 6/19/2013 6/21/2013 6/24/2013 6/26/2013 6/28/2013 7/1/2013 7/3/2013 7/5/2013 7/8/2013 7/10/2013 7/12/2013 7/15/2013 Analyte Units Duplicate 1 1 1 1 1 1 1 1 1 1 PFOA UG/L 5 4 3 2 3 3 3 6 4 2 3 4Appendix A Summary of PFOA Results at 662 January - December 2013 Status Report on PFOA Emissions Reductions and Data Summary for 2013 DuPont Chambers Works

Deepwater, New Jersey

662 is analyzed by DuPont LAS 662-Grab is analyzed by Critical Path (CP) Page 2 of 3 Appendix A_662 5/30/2014 Location CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 Sample Date 7/17/2013 7/19/2013 7/22/2013 7/24/2013 7/26/2013 7/29/2013 7/31/2013 8/2/2013 8/5/2013 8/7/2013 8/9/2013 8/12/2013 Analyte Units Duplicate 1 1 1 1 1 1 1 1 1 1 PFOA UG/L 3 3 2 2 3 3 3 3 3 3 8 10

Location CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 Sample Date 8/14/2013 8/16/2013 8/19/2013 8/21/2013 8/23/2013 8/26/2013 8/28/2013 8/30/2013 9/2/2013 9/4/2013 9/6/2013 9/9/2013 Analyte Units Duplicate 1 1 1 1 1 1 1 1 1 1 PFOA UG/L 6 5 4 4 4 4 3 5 6 10 5 3

Location CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 Sample Date 9/11/2013 9/13/2013 9/16/2013 9/18/2013 9/20/2013 9/23/2013 9/25/2013 9/27/2013 9/30/2013 10/2/2013 10/4/2013 10/7/2013 Analyte Units Duplicate 1 1 1 1 1 1 1 1 1 1 PFOA UG/L 3 6 2 2 2 3 3 3 3 3 3 3

Location CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 Sample Date 10/9/2013 10/11/2013 10/14/2013 10/16/2013 10/18/2013 10/21/2013 10/23/2013 10/25/2013 10/28/2013 10/30/2013 11/1/2013 11/4/2013 Analyte Units Duplicate 1 1 1 1 1 1 1 1 1 1 1 1 PFOA UG/L 3 2 4 3 3 3 3 3 2 2 2 2

Location CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 Sample Date 11/6/2013 11/8/2013 11/11/2013 11/13/2013 11/15/2013 11/18/2013 11/20/2013 11/22/2013 11/25/2013 11/27/2013 11/29/2013 12/2/2013 Analyte Units Duplicate 1 1 1 1 1 1 1 1 1 1 PFOA UG/L 3 2 2 2 2 2 1 1 1 2 4 3

Location CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 CWK-662 Sample Date 12/4/2013 12/9/2013 12/11/2013 12/13/2013 12/16/2013 12/18/2013 12/20/2013 12/23/2013 12/25/2013 12/27/2013 12/30/2013 Analyte Units Duplicate 1 1 1 1 1 1 1 1 1 PFOA UG/L 3 3 3 2 2 3 5 3 4 3 2Appendix A Summary of PFOA Results at 662 January - December 2013 Status Report on PFOA Emissions Reductions and Data Summary for 2013 DuPont Chambers Works

Deepwater, New Jersey

662 is analyzed by DuPont LAS 662-Grab is analyzed by Critical Path (CP) Page 3 of 3 Appendix A_662 5/30/2014 Location 662-GRAB 662-GRAB 662-GRAB 662-GRAB 662-GRAB 662-GRAB 662-GRAB 662-GRAB 662-GRAB 662-GRAB 662-GRAB 662-GRAB Sample Date 01/07/2013 01/14/2013 01/21/2013 01/28/2013 02/04/2013 02/11/2013 02/18/2013 02/25/2013 03/04/2013 03/11/2013 03/18/2013 03/25/2013 Analyte Units Duplicate 1 1 1 1 1 1 1 1 1 1 PFOA UG/L 1.75 0.784 1.2 2.37 3.13 3.07 6.41 2.61 3.38 2.15 3 2.25

Location 662-GRAB 662-GRAB 662-GRAB 662-GRAB 662-GRAB 662-GRAB 662-GRAB 662-GRAB 662-GRAB 662-GRAB 662-GRAB 662-GRAB Sample Date 04/01/2013 04/08/2013 04/15/2013 04/22/2013 04/29/2013 05/06/2013 05/13/2013 05/20/2013 05/27/2013 06/03/2013 06/10/2013 06/17/2013 Analyte Units Duplicate 1 1 1 1 1 1 1 1 1 1 1 PFOA UG/L 2.94 2.62 2.86 2.79 2.43 1.71 2.22 2.06 2.5 1.92 3.28 2.33

Location 662-GRAB 662-GRAB 662-GRAB 662-GRAB 662-GRAB 662-GRAB 662-GRAB 662-GRAB 662-GRAB 662-GRAB 662-GRAB 662-GRAB Sample Date 06/24/2013 07/01/2013 07/08/2013 07/15/2013 07/22/2013 07/29/2013 08/05/2013 08/12/2013 08/19/2013 08/26/2013 09/02/2013 09/09/2013 Analyte Units Duplicate 1 1 1 1 1 1 1 1 1 1 1 PFOA UG/L 2.25 3.65 2.69 3.62 1.46 4.08 2.32 5.25 3.33 2.76 5.93 2.91

Location 662-GRAB 662-GRAB 662-GRAB 662-GRAB 662-GRAB 662-GRAB 662-GRAB 662-GRAB 662-GRAB 662-GRAB 662-GRAB 662-GRAB Sample Date 09/16/2013 09/23/2013 09/30/2013 10/07/2013 10/14/2013 10/21/2013 10/28/2013 11/04/2013 11/11/2013 11/18/2013 11/25/2013 12/02/2013 Analyte Units Duplicate 1 1 1 1 1 1 1 1 1 1 1 1 PFOA UG/L 2.01 2.32 2.69 2.68 4.48 2.72 2.38 3.07 2.2 1.9 2.17 2.45

Location 662-GRAB 662-GRAB 662-GRAB Sample Date 12/09/2013 12/16/2013 12/23/2013 Analyte Units Duplicate 1 1 1 PFOA UG/L 3.41 2.74 2.66