2019.12.31_CCO.p16_ChemoursCorrectiveActionPlan-AppendixE

TR0795 December 2019
APPENDIX E
PFAS Signatures Assessment
APPENDIX E: PFAS SIGNATURE METHODS AND RESULTS
1. INTRODUCTION AND OBJECTIVES
This appendix provides details on the statistical method used to facilitate identification of PFAS signatures in the onsite and offsite areas and a summary of the results of the analysis (Table E-1).
Hierarchical cluster analysis (HCA), was used to evaluate the relative proportions of Table 3+ PFAS concentrations in onsite and offsite groundwater and surface water to identify: (i) groups of samples that share similar concentration compositions and (ii) the Total Table 3+ PFAS compounds driving these groupings. The results of the HCA were used to infer PFAS signatures across the onsite and offsite areas and to provide a line of evidence regarding different PFAS
pathways. The analysis was performed using R software (R Core Team, 2018).
2. HIERARCHICAL CLUSTER ANALYSIS
The hierarchical cluster analysis was performed similarly to the one performed for the On and Offsite Assessment (Geosytnec, 2019); however, the data set was expanded to include onsite and offsite groundwater samples collected from the following locations:
Onsite and offsite groundwater wells;
Offsite private drinking water wells;
Cape Fear River, Willis Creek, Georgia Branch Creek, and Old Outfall 002; and
Onsite and offsite groundwater seeps.
Also, this analysis used data for the 11 Table 3+ PFAS data on Attachment C of the Consent Order. Private well data were analyzed for only the Attachment C PFAS and, therefore, this was the set of Table 3+ PFAS that could facilitate the identification and subsequent comparison of signatures
between the samples of private well data and other data sets.
Hierarchical cluster analysis (HCA) is a multivariate statistical method that can identify common groups, i.e., clusters, of wells within a large data set based on their PFAS concentration compositions. HCA builds a hierarchy from the bottom-up and does not require the number of clusters to be specified beforehand (Hastie et al. 2009).
The idea behind the HCA clustering algorithm is as follows:
1. Begin by assuming each groundwater well is in its own cluster.
2. Identify the closest two clusters and combine them into one cluster.
3. Repeat the above step until all the data points are in a single cluster.
To perform step 2 above, a distance metric (to quantify the dissimilarity between clusters) and an
agglomeration criterion need to be selected. Many distances are available (Manhattan, Euclidean,
etc.) as well as several agglomeration methods (Ward, single, centroid, etc.). For this analysis, the
Appendix E Page 2
Manhattan distance and Ward’s method were used to perform the HCA. The Ward’s method minimizes the sum of squares of any two (hypothetical) clusters that can be formed at each step. This method produces compact clusters of similar size and is one of the most common methods
used for environmental concentration data.
The results of HCA are displayed using a tree-based graphical representation known as a dendrogram. Each leaf of the dendrogram (vertical line) corresponds to a well and wells that are similar to each other are merged into branches (horizontal lines). The height of each merge
indicates the similarity between two clusters. Therefore, merges with higher heights represent less
similar clusters.
To determine the optimal number of clusters, a “majority rule” approach can be used. This approach involves simultaneously calculating several indices (e.g., Elbow, Silhouette Gap statistics, etc.) to determine the relevant number of clusters and the number proposed by the
majority of indices is the optimal number of clusters (Charrad et al., 2014).
3. RESULTS
The HCA identified four clusters of wells with differing Table 3+ PFAS compositions. The PFAS compositions across wells within a cluster were used to infer the following four PFAS signatures:
Aerial deposition PFAS signature characterized by a mixture of PFAS compounds;
Aerial deposition PFAS signature characterized by a predominant proportion of PMPA orHFPO-DA; and
Combined process water PFAS signature characterized with a predominant proportion of
PFMOAA.
For each proposed PFAS signature, the concentration compositions for all locations are shown in Table E-1. The spatial distribution of these proposed PFAS signatures are provided in Figures 2 in the main report.
4. REFERENCES
Charrad, Malika, Nadia Ghazzali, Véronique Boiteau, and Azam Niknafs. 2014. “NbClust: An R
Package for Determining the Relevant Number of Clusters in a Data Set.” Journal of
Statistical Software 61: 1–36. http://www.jstatsoft.org/v61/i06/paper.
Geosyntec, 2019. On and Offsite Assessment (Version 2). October 31, 2019.
Hastie, T., Tibshirani, R. and Friedman, J., 2009. The Elements of Statistical Learning: Data
Mining, Inference, and Prediction. Biometrics.
R Core Team. 2018. R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria. Available at: https://www.R-project.org/.
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TABLES
TABLE E-1PFAS SIGNATURES FOR ON AND OFFSITE GROUNDWATER AND SURFACE WATER LOCATIONS Chemours Fayetteville Works, North CarolinaGeosyntec Consultants of NC P.C.PFAS SignatureArea MediaLocation IDSample DateHFPO-DAPFMOAAPFO2HxAPFO3OAPFO4DAPFO5DAPMPAPEPAPFESA-BP1PFESA-BP2PFECA-GTotal Table 3+ (ng/L)Aerial - Mixture of PFASOffsite GroundwaterBLADEN-3D08/28/19 11% 0%6%0%0%0%69%10%0%3%0% 20Aerial - Mixture of PFASOnsite GroundwaterPIW-3D07/18/19 22% 12% 21%4%2%0%28%10%0%0%0%43,000Aerial - Mixture of PFASOnsite GroundwaterFTA-0106/27/19 18% 0% 14%2% 0% 3% 52% 10% 0% 1% 0% 2,900Aerial - Mixture of PFASOnsite GroundwaterFTA-0206/27/19 36% 18% 14% 3% 3% 4% 10% 4% 2% 6% 0% 62,000Aerial - Mixture of PFASOnsite GroundwaterFTA-0306/27/19 37% 9% 18%2% 2% 3% 18% 6% 2% 2% 0% 35,000Aerial - Mixture of PFASOnsite GroundwaterMW-12S07/08/19 33% 13% 19% 3% 2% 2% 20% 8% 0% 1% 0% 51,000Aerial - Mixture of PFASOnsite GroundwaterMW-2306/25/19 64% 3% 8% 1%1%0%16%6%0%1%0%27,000Aerial - Mixture of PFASOnsite GroundwaterMW-2506/25/19 26% 4% 12% 2%2%1%38%15%0%1%0%67,000Aerial - Mixture of PFASOnsite GroundwaterMW-3007/02/19 24% 4% 12% 1%2%3%38%14%0%1%0%76,000Aerial - Mixture of PFASOnsite GroundwaterMW-7S07/10/19 32% 9% 16% 3%2%3%24%10%0%2%0%54,000Aerial - Mixture of PFASOnsite GroundwaterMW-9S06/25/19 27% 8% 13% 2%2%1%34%13%0%1%0%21,000Aerial - Mixture of PFASOnsite GroundwaterNAF-0107/10/19 20% 19% 19% 5% 6% 6% 16% 7% 1% 3% 0% 110,000Aerial - Mixture of PFASOnsite GroundwaterNAF-0407/15/19 11% 10% 17% 5% 2% 1% 3% 1% 45% 5% 0% 2,400,000Aerial - Mixture of PFASOnsite GroundwaterNAF-08A07/15/19 9% 2% 4% 1% 1% 1% 51% 28% 1% 1% 0% 390,000Aerial - Mixture of PFASOnsite GroundwaterNAF-0907/02/19 23% 3% 12%5% 6% 1% 29% 19% 0% 1% 0% 180,000Aerial - Mixture of PFASOnsite GroundwaterNAF-1007/03/19 29% 6% 12%2% 1% 1% 35% 12% 0% 1% 0% 80,000Aerial - Mixture of PFASOnsite GroundwaterNAF-1207/17/19 5% 10% 17%7% 4% 3% 14% 1% 29% 10% 0% 2,300,000Aerial - Mixture of PFASOnsite GroundwaterPZ-1306/25/19 17% 3% 8% 1%1% 2% 43% 24% 0% 1% 0% 260,000Aerial - Mixture of PFASOnsite GroundwaterPZ-1407/03/19 26% 4% 11% 2% 2% 2% 38% 14% 0% 0% 0% 120,000Aerial - Mixture of PFASOnsite GroundwaterPZ-1506/25/19 19% 5% 17% 2%2%2%36%15%0%1%0%52,000Aerial - Mixture of PFASOnsite GroundwaterPZ-19R07/01/19 27% 12% 25% 3% 3% 2% 18% 8% 0% 1% 0% 24,000Aerial - Mixture of PFASOnsite GroundwaterPZ-20R07/01/19 33% 8% 25%2% 2% 2% 19% 8% 0% 1% 0% 10,000Aerial - Mixture of PFASOnsite GroundwaterPZ-21R07/02/19 30% 13% 26% 3% 3% 2% 15% 6% 0% 1% 0% 6,900Aerial - Mixture of PFASOnsite GroundwaterPZ-2406/25/19 58% 2% 7% 1%1%0%22%8%0%0%0%62,000Aerial - Mixture of PFASOnsite GroundwaterPZ-2606/25/19 38% 0% 30% 0% 0% 9% 0% 22% 0% 0% 0% 630Aerial - Mixture of PFASOnsite GroundwaterPZ-2806/25/19 18% 6% 16% 2%2%1%40%14%0%1%0% 7,900Aerial - Mixture of PFASOnsite GroundwaterPZ-3507/02/19 25% 9% 23% 4% 6% 6% 17% 8% 0% 2% 0% 6,500Aerial - Mixture of PFASOnsite GroundwaterSMW-0207/17/19 24% 4% 26%4% 1% 0% 28% 13% 0% 0% 0% 76,000Aerial - Mixture of PFASOnsite GroundwaterSMW-0707/08/19 63% 4% 11%1% 1% 0% 14% 4% 0% 1% 0% 19,000Aerial - Mixture of PFASOffsite Surface WaterCFR-0407/25/19 0% 0% 100%0%0%0%0%0%0%0%0% 2.2Aerial - Mixture of PFASOffsite Surface WaterCFR-0407/25/19 48% 0%52%0%0%0%0%0%0%0%0% 4.4Aerial - Mixture of PFASOffsite Surface WaterCFR-0407/25/19 0% 0% 100%0%0%0%0%0%0%0%0% 2.2Aerial - Mixture of PFASOffsite Surface WaterCFR-KINGS05/23/19 18% 8% 31% 8% 3% 0% 31% 0% 0% 0% 0% 93Aerial - Mixture of PFASOffsite Surface WaterCFR-MILE-7605/22/1924% 0% 15% 0% 0% 0% 61% 0% 0% 0% 0% 29Aerial - Mixture of PFASOffsite Surface WaterGBC-105/29/19 19% 0% 16% 3% 0% 0% 50% 11% 0% 1% 0% 2,600Aerial - Mixture of PFASOffsite Surface WaterGBC-205/29/19 25% 0% 14% 3% 0% 0% 46% 11% 0% 1% 0% 2,600Aerial - Mixture of PFASOffsite Surface WaterGBC-305/29/19 23% 0% 16% 2% 0% 0% 47% 11% 0% 1% 0% 3,000Aerial - Mixture of PFASOffsite Surface WaterGBC-505/29/19 28% 5% 17% 3% 0% 0% 35% 11% 0% 1% 0% 4,600Aerial - Mixture of PFASOffsite Surface WaterGBC-605/29/19 29% 0% 17% 3% 0% 0% 39% 11% 0% 1% 0% 4,900Aerial - Mixture of PFASOffsite Surface WaterGBC-705/29/19 28% 0% 19% 3% 0% 1% 38% 10% 0% 1% 0% 4,200Aerial - Mixture of PFASOnsite Surface WaterOLDOF-2J02/02/19 13% 7% 19% 4% 0% 0% 41% 16% 0% 0% 0% 9,000Aerial - Mixture of PFASOnsite Surface WaterSEEP-A-1002/07/19 16%20% 16% 7% 5% 4% 13% 5% 13% 2% 0% 380,000Aerial - Mixture of PFASOnsite Surface WaterSEEP-A-1102/07/19 15%20% 16% 7% 5% 4% 12% 5% 14% 2% 0% 380,000Aerial - Mixture of PFASOnsite Surface WaterSEEP-A-1202/07/19 19%14% 28% 5% 4% 2% 19% 7% 0% 1% 0% 110,000Aerial - Mixture of PFASOnsite Surface WaterSEEP-A-502/07/19 14% 19% 17% 6% 4% 3% 24% 11% 1% 1% 0% 130,000Aerial - Mixture of PFASOnsite Surface WaterSEEP-A-602/07/19 16% 13% 16% 5% 4% 3% 26% 13% 1% 1% 0% 110,000Aerial - Mixture of PFASOnsite Surface WaterSEEP-A-702/07/19 16% 23% 17% 5% 3% 2% 22% 10% 1% 1% 0% 180,000Aerial - Mixture of PFASOnsite Surface WaterSEEP-A-802/07/19 11% 15% 15% 5% 5% 4% 29% 13% 2% 1% 0% 120,000Aerial - Mixture of PFASOnsite Surface WaterSEEP-A-902/07/19 16% 20% 16% 7% 5% 4% 13% 5% 13% 2% 0% 360,000Aerial - Mixture of PFASOnsite Surface WaterSEEP-B-302/06/19 20% 3% 9% 2% 1% 1% 33% 18% 12% 2% 0% 200,000TR0795Page 1 of 20December 2019
TABLE E-1PFAS SIGNATURES FOR ON AND OFFSITE GROUNDWATER AND SURFACE WATER LOCATIONS Chemours Fayetteville Works, North CarolinaGeosyntec Consultants of NC P.C.PFAS SignatureArea MediaLocation IDSample DateHFPO-DAPFMOAAPFO2HxAPFO3OAPFO4DAPFO5DAPMPAPEPAPFESA-BP1PFESA-BP2PFECA-GTotal Table 3+ (ng/L)Aerial - Mixture of PFASOnsite Surface WaterSEEP-B-3-A102/06/19 25% 2% 8% 2% 1% 1% 30% 16% 13% 2% 0% 230,000Aerial - Mixture of PFASOnsite Surface WaterSEEP-B-3-E402/06/19 27% 4% 14% 3% 3% 1% 35% 13% 0% 1% 0% 37,000Aerial - Mixture of PFASOnsite Surface WaterSEEP-B-402/06/19 22% 2% 6% 1% 1% 1% 32% 16% 18% 2% 0% 380,000Aerial - Mixture of PFASOnsite Surface WaterSEEP-B-402/06/19 15% 2% 9% 2% 2% 1% 31% 16% 20% 2% 0% 210,000Aerial - Mixture of PFASOffsite Surface WaterSEEP-E10/22/19 20% 8%14%3%1%1%39%12%0%2%0% 5,900Aerial - Mixture of PFASOffsite Surface WaterSEEP-F10/22/19 17% 14% 12% 2% 0% 0% 42% 13% 0% 0% 0% 6,600Aerial - Mixture of PFASOffsite Surface WaterSEEP-G10/22/19 20% 6%14%2%0%0%44%14%0%1%0% 3,400Aerial - Mixture of PFASOffsite Surface WaterSEEP-H10/22/19 21% 5%13%1%0%0%45%14%0%1%0% 2,600Aerial - Mixture of PFASOffsite Surface WaterSEEP-I10/22/19 22% 5%11%1%0%0%46%15%0%0%0% 2,600Aerial - Mixture of PFASOffsite Surface WaterSEEP-J10/22/19 24% 7%14%5%2%1%34%11%0%2%0% 2,400Aerial - Mixture of PFASOffsite Surface WaterSEEP-K10/22/19 22% 5%11%1%0%0%44%14%0%2%0% 2,900Aerial - Mixture of PFASOffsite Surface WaterSEEP-L10/22/19 21% 5%9% 1% 0% 0% 48% 14% 0% 2% 0% 2,500Aerial - Mixture of PFASOffsite Surface WaterSEEP-M10/22/19 22% 4%7% 1% 0% 0% 50% 16% 0% 1% 0% 2,600Aerial - Mixture of PFASOffsite Surface WaterWC-202/07/19 19% 8% 21% 0% 0% 0% 43% 9% 0% 0% 0% 680Aerial - Mixture of PFASOffsite Surface WaterWC-302/07/19 21% 11% 20% 0% 0% 0% 48% 0% 0% 0% 0% 560Aerial - Mixture of PFASOffsite Surface WaterWC-402/07/19 15% 0% 24% 0% 0% 0% 61% 0% 0% 0% 0% 340Aerial - Mixture of PFASOffsite Surface WaterWC-502/07/19 9% 0% 20%0% 0% 0% 51% 20% 0% 0% 0% 370Aerial - Mixture of PFASOffsite GroundwaterBLADEN-3S08/28/19 11% 13% 27% 3% 3% 1% 34% 5% 0% 3% 0% 110Aerial - Mixture of PFASOnsite GroundwaterINSITU-0106/20/19 25% 9%20%2%0%0%34%10%0%1%0% 2,300Aerial - Mixture of PFASOnsite GroundwaterMW-16D07/15/19 32% 12% 11% 2% 1% 0% 32% 8% 1% 1% 0% 4,000Aerial - Mixture of PFASOnsite GroundwaterMW-17D07/15/19 18% 7% 13%2% 0% 0% 45% 14% 0% 1% 0% 3,800Aerial - Mixture of PFASOnsite GroundwaterMW-18D07/15/19 54% 4% 7% 0% 0% 0% 28% 7% 0% 0% 0% 1,500Aerial - Mixture of PFASOnsite GroundwaterMW-19D07/09/19 25% 16% 19% 4% 2% 0% 25% 8% 0% 0% 0% 4,400Aerial - Mixture of PFASOnsite GroundwaterMW-21D07/11/19 19% 6% 15%1% 0% 0% 44% 15% 0% 0% 0% 2,000Aerial - Mixture of PFASOnsite GroundwaterMW-22D07/15/19 38% 6% 12%2% 1% 0% 30% 10% 0% 0% 0% 4,700Aerial - Mixture of PFASOnsite GroundwaterSMW-0106/25/19 35% 6% 16%3% 1% 0% 28% 9% 0% 1% 0% 6,000Aerial - Mixture of PFASOnsite GroundwaterSMW-0907/11/19 28% 4% 6% 2% 2% 0% 10% 3% 44% 1% 0% 50,000Aerial - Mixture of PFASOnsite GroundwaterSMW-1106/26/19 32% 13% 19% 3% 2% 1% 23% 6% 0% 1% 0% 12,000Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/17/17 28% 6% 10% 0% 0% 0% 56% 0% 0% 0% 0% 910Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence01/26/18 5% 9% 8% 0% 0% 0% 59% 8% 0% 11% 0% 270Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/19/17 & 09/30/19 21% 4% 8% 0% 0% 0% 52% 13% 0% 1% 0% 2,300Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence03/01/18 4% 5% 1% 0% 0% 0% 68% 12% 0% 10% 0% 320Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence02/07/18 3% 8% 1% 0% 0% 0% 68% 9% 0% 11% 0% 320Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence01/30/18 & 01/28/19 18% 4% 4% 0% 0% 0% 59% 12% 0% 3% 0% 970Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/31/19 9% 12% 28% 2% 1% 0% 39% 6% 0% 4% 0% 220Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/02/19 4% 9% 5% 0% 0% 0% 67% 8% 0% 8% 0% 240Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/29/19 15% 8% 10% 0% 0% 0% 46% 17% 0% 4% 0% 210Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/19/17 14% 8% 20% 2% 0% 0% 51% 0% 0% 4% 0% 85Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/31/19 16% 9% 12% 0% 0% 0% 51% 8% 0% 3% 0% 210Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/24/17 & 09/26/19 23% 4% 6% 1% 0% 0% 53% 13% 0% 1% 0% 1,400Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/06/17 14% 4% 7% 0% 0% 0% 61% 13% 0% 0% 0% 1,600Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence11/20/17 16% 7% 15% 0% 0% 0% 47% 11% 0% 4% 0% 1,300Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/25/17 35% 5% 9% 0% 0% 0% 39% 12% 0% 0% 0% 3,100Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/16/19 6% 14% 12% 0% 0% 0% 66% 0% 0% 3% 0% 79Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/29/19 10% 9% 11% 1% 0% 0% 56% 9% 0% 5% 0% 410Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/23/17 & 04/11/19 43% 5% 13% 1% 1% 0% 27% 8% 0% 1% 0% 9,200Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/19/17 & 08/27/19 12% 4% 5% 0% 0% 0% 67% 12% 0% 0% 0% 1,300Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/30/19 9% 4% 4% 0% 0% 0% 68% 12% 0% 3% 0% 130Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/17/19 9% 6% 4% 0% 0% 0% 71% 10% 0% 1% 0% 310Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/26/19 8% 3% 1% 0% 0% 0% 77% 11% 0% 0% 0% 250TR0795Page 2 of 20December 2019
TABLE E-1PFAS SIGNATURES FOR ON AND OFFSITE GROUNDWATER AND SURFACE WATER LOCATIONS Chemours Fayetteville Works, North CarolinaGeosyntec Consultants of NC P.C.PFAS SignatureArea MediaLocation IDSample DateHFPO-DAPFMOAAPFO2HxAPFO3OAPFO4DAPFO5DAPMPAPEPAPFESA-BP1PFESA-BP2PFECA-GTotal Table 3+ (ng/L)Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence12/12/17 15% 5% 10% 0% 0% 0% 56% 11% 0% 3% 0% 1,700Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/18/17 8% 0% 9% 0% 0% 0% 71% 12% 0% 0% 0% 1,000Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence12/12/17 & 09/27/19 22% 7% 14% 1% 1% 0% 42% 8% 0% 5% 0% 640Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/07/17 & 08/06/19 21% 8% 17% 0% 0% 0% 43% 10% 0% 1% 0% 890Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/16/19 3% 14% 10% 0% 0% 0% 68% 0% 0% 5% 0% 100Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/23/19 3% 8% 11% 0% 0% 0% 68% 0% 0% 10% 0% 89Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence01/30/18 13% 0% 12% 0% 0% 0% 69% 0% 0% 6% 0% 45Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/04/19 0% 22% 12% 0% 0% 0% 59% 0% 0% 7% 0% 68Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/01/19 10% 11% 11% 0% 0% 0% 65% 0% 0% 3% 0% 88Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/30/19 4% 28% 19% 0% 0% 0% 42% 0% 0% 8% 0% 69Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/18/19 8% 13% 11% 0% 0% 0% 59% 0% 0% 9% 0% 90Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/18/19 35% 0% 6% 0% 0% 0% 54% 0% 0% 6% 0% 78Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/31/19 5% 14% 10% 0% 0% 0% 58% 6% 0% 6% 0% 170Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/17/17 & 07/09/19 20% 3% 10% 1% 0% 0% 49% 16% 0% 2% 0% 3,500Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/19/17 & 09/10/19 25% 5% 17% 3% 1% 0% 37% 12% 0% 1% 0% 4,900Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/01/19 25% 5% 14% 2% 0% 0% 38% 14% 0% 2% 0% 1,500Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence03/18/19 & 08/28/19 14% 9% 27% 2% 1% 0% 35% 10% 0% 2% 0% 1,900Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/16/19 19% 11% 14% 0% 0% 0% 57% 0% 0% 0% 0% 64Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/18/17 & 09/24/19 18% 6% 17% 2% 1% 0% 41% 12% 0% 3% 0% 2,000Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/23/19 20% 5% 10% 0% 0% 0% 63% 0% 0% 3% 0% 130Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/23/19 9% 5% 10% 1% 0% 0% 64% 8% 0% 2% 0% 260Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/28/17 & 01/10/18 6% 6% 5% 0% 0% 0% 72% 6% 0% 5% 0% 390Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/17/17 4% 4% 3% 0% 0% 0% 79% 7% 0% 3% 0% 280Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/25/19 0% 18% 10% 0% 0% 0% 64% 0% 0% 8% 0% 28Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/29/19 14% 10% 22% 2% 1% 0% 40% 9% 0% 2% 0% 450Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/26/17 & 07/16/19 14% 5% 9% 0% 0% 0% 53% 15% 0% 3% 0% 2,800Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/25/19 10% 12% 15% 1% 0% 0% 49% 9% 0% 3% 0% 300Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/01/19 12% 8% 19% 3% 1% 0% 55% 0% 0% 3% 0% 260Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/25/19 6% 13% 10% 0% 0% 0% 68% 0% 0% 3% 0% 140Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/24/19 6% 15% 12% 0% 0% 0% 61% 0% 0% 6% 0% 89Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/21/19 70% 0% 0% 0% 0% 0% 30% 0% 0% 0% 0% 54Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence01/23/18 36% 0% 0% 0% 0% 0% 64% 0% 0% 0% 0% 20Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence01/24/18 37% 0% 8% 0% 0% 0% 55% 0% 0% 0% 0% 25Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/19/19 7% 11% 14% 0% 0% 0% 65% 0% 0% 3% 0% 200Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence06/03/19 17% 1% 17% 2% 0% 0% 50% 10% 0% 2% 0% 1,200Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence01/23/18 & 09/11/19 14% 9% 14% 1% 0% 0% 50% 8% 0% 3% 0% 900Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence03/27/18 16% 6% 15% 0% 0% 0% 53% 11% 0% 0% 0% 1,200Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence01/23/18 & 10/08/19 15% 8% 19% 3% 0% 0% 43% 10% 0% 1% 0% 2,100Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence01/25/18 29% 0% 6% 0% 0% 0% 64% 0% 0% 0% 0% 51Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/02/19 8% 6% 7% 0% 0% 0% 65% 9% 0% 4% 0% 170Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence01/23/18 & 08/27/19 14% 4% 8% 1% 0% 0% 60% 12% 0% 1% 0% 3,800Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/30/19 0% 0% 100% 0% 0% 0% 0% 0% 0% 0% 0% 2.1Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/31/19 7% 8% 11% 0% 0% 0% 62% 9% 0% 3% 0% 180Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/18/19 4% 15% 19% 1% 0% 0% 60% 0% 0% 1% 0% 270Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/17/19 10% 8% 10% 1% 0% 0% 61% 8% 0% 2% 0% 400Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/25/19 5% 13% 16% 2% 0% 0% 60% 0% 0% 5% 0% 230Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/01/19 3% 14% 14% 0% 0% 0% 62% 0% 0% 7% 0% 84Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence03/07/18 7% 14% 16% 1% 0% 0% 56% 0% 0% 5% 0% 160Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/19/19 7% 12% 13% 1% 0% 0% 62% 0% 0% 5% 0% 180Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/23/19 14% 8% 13% 1% 0% 0% 49% 9% 0% 6% 0% 280TR0795Page 3 of 20December 2019
TABLE E-1PFAS SIGNATURES FOR ON AND OFFSITE GROUNDWATER AND SURFACE WATER LOCATIONS Chemours Fayetteville Works, North CarolinaGeosyntec Consultants of NC P.C.PFAS SignatureArea MediaLocation IDSample DateHFPO-DAPFMOAAPFO2HxAPFO3OAPFO4DAPFO5DAPMPAPEPAPFESA-BP1PFESA-BP2PFECA-GTotal Table 3+ (ng/L)Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/26/19 11% 10% 15% 1% 0% 0% 58% 0% 0% 5% 0% 190Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/23/19 4% 9% 10% 0% 0% 0% 68% 8% 0% 1% 0% 370Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/26/19 5% 13% 13% 2% 0% 0% 64% 0% 0% 4% 0% 160Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/23/19 4% 9% 17% 2% 0% 0% 60% 6% 0% 2% 0% 360Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/30/19 8% 13% 31% 4% 1% 0% 32% 6% 0% 5% 0% 180Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/18/17 4% 4% 4% 0% 0% 0% 78% 7% 0% 3% 0% 410Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/25/19 11% 7% 26% 3% 1% 0% 51% 0% 0% 1% 0% 200Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/23/19 4% 8% 10% 0% 0% 0% 67% 10% 0% 0% 0% 390Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/14/19 9% 7% 23% 1% 1% 0% 52% 7% 0% 0% 0% 350Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/09/19 12% 12% 23% 3% 0% 0% 46% 0% 0% 4% 0% 210Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/21/19 7% 13% 22% 2% 0% 0% 52% 0% 0% 3% 0% 140Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/21/19 7% 13% 22% 2% 0% 0% 53% 0% 0% 3% 0% 130Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/26/19 5% 13% 24% 2% 0% 0% 54% 0% 0% 1% 0% 190Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/30/19 10% 10% 17% 2% 0% 0% 56% 0% 0% 5% 0% 150Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/08/19 4% 12% 29% 3% 0% 0% 44% 7% 0% 1% 0% 450Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/30/19 6% 12% 30% 4% 1% 0% 34% 6% 0% 6% 0% 180Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/21/19 2% 14% 27% 3% 0% 0% 44% 0% 0% 10% 0% 130Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/09/19 9% 6% 11% 0% 0% 0% 68% 0% 0% 5% 0% 160Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/25/19 9% 12% 25% 3% 1% 0% 38% 5% 0% 7% 0% 440Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/26/17 3% 0% 4% 0% 0% 0% 84% 6% 0% 4% 0% 390Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/17/19 11% 6% 3% 0% 0% 0% 65% 13% 0% 2% 0% 280Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/11/19 2% 9% 34% 5% 1% 0% 42% 0% 0% 6% 0% 350Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/21/19 11% 0% 25% 0% 0% 0% 64% 0% 0% 0% 0% 53Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/17/19 9% 12% 16% 2% 0% 0% 56% 0% 0% 5% 0% 150Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/23/19 15% 9% 19% 2% 0% 0% 53% 0% 0% 2% 0% 180Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/20/19 5% 12% 21% 0% 0% 0% 43% 0% 0% 19% 0% 120Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/08/19 6% 9% 7% 0% 0% 0% 68% 9% 1% 0% 0% 160Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/02/19 10% 10% 19% 0% 0% 0% 59% 0% 0% 1% 0% 150Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/03/19 8% 19% 21% 0% 0% 0% 46% 0% 0% 6% 0% 170Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/08/19 9% 16% 24% 1% 1% 0% 36% 6% 0% 7% 0% 210Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence02/13/18 & 08/01/19 12% 6% 21% 2% 0% 0% 47% 9% 0% 2% 0% 1,500Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/29/19 8% 15% 20% 1% 0% 0% 44% 6% 0% 6% 0% 460Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/02/19 13% 10% 15% 1% 0% 0% 48% 8% 0% 6% 0% 270Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence05/08/19 & 06/19/198%4%1%0%0%0%76%12%0%0%0% 250Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/22/19 9% 16% 22% 0% 0% 0% 48% 0% 0% 5% 0% 76Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence05/29/19 9% 0% 26% 1% 0% 0% 50% 0% 0% 13% 0% 150Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/22/19 13% 3% 1% 0% 0% 0% 73% 10% 0% 0% 0% 220Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence12/26/18 17% 9% 11% 0% 0% 0% 49% 11% 0% 3% 0% 310Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence06/20/19 13% 4% 3% 0% 0% 0% 67% 13% 0% 1% 0% 440Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/30/19 0% 10% 28% 2% 1% 0% 45% 13% 0% 1% 0% 1,900Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/11/19 0% 0% 0% 0% 0% 82% 0% 0% 0% 0% 18% 12Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/26/17 & 08/01/19 26% 8% 24% 2% 1% 0% 30% 7% 0% 2% 0% 970Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence12/26/18 12% 10% 19% 1% 0% 0% 47% 6% 0% 5% 0% 190Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/11/19 13% 10% 16% 1% 0% 0% 49% 8% 0% 4% 0% 310Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/09/19 5% 7% 13% 1% 0% 0% 66% 7% 0% 1% 0% 500Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/25/19 15% 11% 19% 1% 0% 0% 42% 9% 0% 3% 0% 280Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence01/25/18 7% 15% 21% 2% 1% 0% 48% 0% 0% 6% 0% 180Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/11/19 9% 14% 16% 0% 0% 2% 54% 0% 0% 4% 0% 200Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/01/19 9% 11% 17% 0% 0% 0% 59% 0% 0% 4% 0% 150Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/14/19 9% 7% 12% 1% 0% 0% 64% 7% 0% 1% 0% 410TR0795Page 4 of 20December 2019
TABLE E-1PFAS SIGNATURES FOR ON AND OFFSITE GROUNDWATER AND SURFACE WATER LOCATIONS Chemours Fayetteville Works, North CarolinaGeosyntec Consultants of NC P.C.PFAS SignatureArea MediaLocation IDSample DateHFPO-DAPFMOAAPFO2HxAPFO3OAPFO4DAPFO5DAPMPAPEPAPFESA-BP1PFESA-BP2PFECA-GTotal Table 3+ (ng/L)Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence12/13/17 14% 0% 30% 0% 0% 0% 56% 0% 0% 0% 0% 270Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/23/19 5% 12% 11% 1% 0% 0% 66% 0% 0% 5% 0% 200Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence02/19/18 9% 15% 20% 2% 0% 0% 48% 0% 0% 6% 0% 170Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence11/10/17 36% 0% 9% 0% 0% 0% 55% 0% 0% 0% 0% 42Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence06/19/19 9% 11% 12% 0% 0% 0% 64% 0% 0% 4% 0% 190Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence01/31/18 & 08/07/19 32% 10% 11% 2% 1% 0% 37% 7% 0% 2% 0% 410Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence01/31/18 20% 5% 13% 0% 0% 0% 50% 12% 0% 0% 0% 1,500Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence01/23/18 6% 13% 16% 0% 0% 0% 59% 0% 0% 5% 0% 200Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/13/17 7% 11% 19% 1% 0% 0% 54% 0% 0% 8% 0% 240Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence12/20/17 & 09/18/19 23% 7% 18% 1% 1% 0% 35% 12% 0% 2% 0% 880Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/10/19 9% 5% 13% 1% 0% 0% 69% 0% 0% 3% 0% 190Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence06/13/19 14% 8% 16% 1% 0% 0% 48% 12% 0% 1% 0% 930Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/20/17 24% 0% 11% 0% 0% 0% 65% 0% 0% 0% 0% 55Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/31/19 9% 9% 10% 0% 0% 0% 58% 12% 0% 2% 0% 360Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/30/19 12% 10% 17% 0% 0% 0% 49% 9% 0% 2% 0% 370Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/10/19 6% 13% 12% 0% 0% 0% 60% 8% 0% 2% 0% 270Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/25/17 27% 7% 17% 1% 0% 0% 35% 11% 0% 2% 0% 1,300Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/20/17 14% 8% 15% 0% 0% 0% 64% 0% 0% 0% 0% 120Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/01/19 13% 7% 15% 2% 1% 0% 51% 8% 0% 3% 0% 550Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/26/19 7% 6% 5% 0% 0% 0% 72% 8% 0% 1% 0% 280Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/21/17 & 07/16/19 22% 7% 22% 2% 1% 0% 36% 10% 0% 2% 0% 2,100Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/28/17 & 01/28/19 25% 3% 11% 0% 0% 0% 53% 8% 0% 0% 0% 530Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence01/30/18 & 09/17/19 20% 4% 4% 0% 0% 0% 61% 11% 0% 0% 0% 740Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence06/25/19 16% 4% 4% 0% 0% 0% 65% 11% 0% 0% 0% 710Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/24/17 & 10/03/19 26% 6% 17% 1% 0% 0% 38% 10% 0% 1% 0% 4,200Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/17/17 & 01/28/19 13% 5% 12% 1% 0% 0% 55% 12% 0% 2% 0% 940Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/19/17 27% 5% 17% 0% 0% 0% 41% 10% 0% 0% 0% 1,700Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/19/19 16% 6% 9% 0% 0% 0% 61% 8% 0% 0% 0% 260Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/18/17 21% 8% 17% 0% 0% 0% 54% 0% 0% 0% 0% 72Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/23/17 79% 0% 21% 0% 0% 0% 0% 0% 0% 0% 0% 12Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence04/30/19 13% 7% 10% 1% 0% 0% 59% 10% 0% 1% 0% 510Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/07/17 24% 6% 20% 3% 0% 0% 36% 11% 0% 0% 0% 2,800Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/07/19 13% 6% 4% 0% 0% 0% 67% 9% 0% 1% 0% 390Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/03/19 10% 7% 19% 2% 0% 0% 63% 0% 0% 0% 0% 120Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/15/17 & 09/10/19 17% 6% 13% 1% 0% 0% 48% 14% 0% 1% 0% 920Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/26/19 16% 9% 18% 3% 0% 0% 45% 10% 0% 0% 0% 620Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/07/17 & 09/19/17 35% 0% 4% 0% 0% 0% 62% 0% 0% 0% 0% 60Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence12/04/17 & 08/13/19 21% 7% 13% 1% 0% 0% 46% 11% 0% 1% 0% 900Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence05/02/18 & 11/27/18 15% 5% 8% 0% 0% 0% 58% 14% 0% 0% 0% 1,000Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence06/24/19 18% 6% 12% 0% 0% 0% 54% 10% 0% 0% 0% 680Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/02/19 17% 8% 10% 0% 0% 0% 53% 9% 0% 3% 0% 410Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/02/19 10% 10% 9% 0% 0% 0% 66% 0% 0% 5% 0% 120Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence06/19/19 18% 6% 14% 1% 0% 0% 50% 10% 0% 0% 0% 670Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/31/19 13% 5% 11% 1% 0% 0% 58% 11% 0% 2% 0% 620Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/12/19 20% 6% 16% 1% 0% 0% 45% 11% 0% 1% 0% 760Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/07/19 6% 12% 12% 0% 0% 0% 61% 0% 0% 8% 0% 180Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/17/17 & 08/06/19 24% 5% 7% 0% 0% 0% 50% 13% 0% 0% 0% 1,200Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/17/17 & 08/06/19 19% 5% 9% 0% 0% 0% 51% 16% 0% 0% 0% 1,700Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/29/19 10% 6% 9% 1% 0% 0% 62% 11% 0% 2% 0% 510Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/29/19 12% 8% 12% 1% 0% 0% 52% 12% 0% 3% 0% 430TR0795Page 5 of 20December 2019
TABLE E-1PFAS SIGNATURES FOR ON AND OFFSITE GROUNDWATER AND SURFACE WATER LOCATIONS Chemours Fayetteville Works, North CarolinaGeosyntec Consultants of NC P.C.PFAS SignatureArea MediaLocation IDSample DateHFPO-DAPFMOAAPFO2HxAPFO3OAPFO4DAPFO5DAPMPAPEPAPFESA-BP1PFESA-BP2PFECA-GTotal Table 3+ (ng/L)Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/11/19 4% 10% 21% 2% 0% 0% 53% 10% 0% 1% 0% 320Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/30/19 13% 14% 9% 1% 0% 0% 49% 11% 0% 4% 0% 430Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/13/17 & 10/26/18 34% 0% 32% 0% 0% 0% 34% 0% 0% 0% 0% 7,400Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/05/19 13% 7% 14% 2% 1% 0% 51% 10% 0% 3% 0% 530Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/07/19 11% 8% 15% 1% 0% 0% 48% 12% 0% 3% 0% 450Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/14/17 & 10/08/19 32% 6% 33% 4% 1% 0% 17% 6% 0% 1% 0% 13,000Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/28/17 & 09/03/19 24% 7% 21% 2% 1% 0% 34% 10% 0% 1% 0% 4,100Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/06/17 & 09/11/19 27% 7% 19% 2% 0% 0% 36% 8% 0% 1% 0% 4,400Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/28/17 & 09/03/19 27% 6% 15% 1% 0% 0% 39% 11% 0% 0% 0% 3,300Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/03/19 8% 16% 14% 0% 0% 0% 56% 0% 0% 6% 0% 51Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence11/22/17 & 08/13/19 20% 3% 6% 0% 0% 0% 57% 13% 0% 0% 0% 4,900Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/27/17 & 07/30/19 25% 7% 13% 1% 0% 0% 43% 9% 0% 2% 0% 2,500Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence11/22/17 & 09/24/19 17% 7% 13% 1% 0% 0% 49% 12% 0% 1% 0% 3,300Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/05/19 12% 10% 13% 0% 0% 0% 52% 8% 0% 4% 0% 290Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/11/19 0% 14% 16% 0% 0% 11% 51% 0% 0% 5% 3% 70Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/23/19 6% 8% 8% 0% 0% 0% 68% 9% 0% 1% 0% 280Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/03/19 15% 15% 18% 0% 0% 0% 48% 0% 0% 3% 0% 160Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/03/19 11% 12% 33% 4% 2% 0% 33% 0% 0% 5% 0% 210Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/05/19 18% 10% 15% 1% 0% 0% 42% 10% 0% 4% 0% 450Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence06/28/19 9% 12% 10% 0% 0% 0% 66% 0% 0% 3% 0% 180Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/29/19 2% 15% 14% 0% 0% 0% 65% 0% 0% 4% 0% 180Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/17/19 13% 6% 13% 1% 0% 0% 56% 10% 0% 1% 0% 480Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence06/28/19 27% 15% 21% 0% 0% 0% 35% 0% 0% 2% 0% 240Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/26/19 3% 21% 32% 0% 0% 0% 37% 0% 0% 7% 0% 110Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/02/19 25% 0% 17% 3% 0% 0% 56% 0% 0% 0% 0% 77Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/09/19 22% 6% 14% 1% 0% 0% 42% 10% 0% 4% 0% 630Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/19/17 & 08/21/19 23% 5% 12% 1% 0% 0% 45% 13% 0% 1% 0% 7,800Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/29/19 11% 11% 15% 0% 0% 0% 42% 8% 0% 12% 0% 680Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/13/19 15% 9% 15% 1% 0% 0% 56% 0% 0% 4% 0% 140Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence12/26/18 & 10/02/19 21% 8% 32% 3% 0% 0% 26% 8% 0% 3% 0% 850Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence12/05/17 19% 7% 18% 0% 0% 0% 43% 13% 0% 0% 0% 1,500Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/31/19 12% 9% 14% 0% 0% 0% 53% 10% 0% 2% 0% 280Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence06/19/19 13% 7% 26% 5% 2% 0% 31% 7% 0% 9% 0% 350Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/26/19 14% 7% 11% 1% 0% 0% 53% 13% 0% 2% 0% 440Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence06/19/19 14% 5% 13% 1% 0% 0% 52% 13% 0% 2% 0% 440Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence11/29/17 & 09/16/19 19% 3% 14% 1% 0% 0% 51% 13% 0% 0% 0% 18,000Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/19/19 4% 12% 41% 6% 2% 0% 31% 0% 0% 5% 0% 220Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence11/21/17 & 08/07/19 18% 6% 19% 5% 1% 0% 40% 9% 0% 1% 0% 2,800Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/24/19 17% 7% 40% 10% 1% 0% 19% 6% 0% 1% 0% 730Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/24/17 & 08/27/19 20% 6% 21% 4% 1% 0% 37% 8% 0% 2% 0% 3,500Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/02/19 9% 8% 6% 0% 0% 0% 64% 11% 0% 1% 0% 200Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence01/31/18 & 01/07/19 23% 10% 7% 1% 0% 0% 47% 10% 0% 1% 0% 740Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/29/19 7% 6% 5% 0% 0% 0% 68% 9% 0% 4% 0% 160Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/13/19 16% 5% 3% 0% 0% 0% 65% 11% 0% 1% 0% 490Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/07/19 0% 24% 19% 0% 0% 0% 57% 0% 0% 0% 0% 28Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/07/19 13% 12% 27% 3% 1% 0% 36% 0% 0% 7% 0% 130Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/07/19 17% 10% 22% 2% 0% 0% 36% 8% 0% 5% 0% 280Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/24/19 9% 5% 6% 0% 0% 0% 64% 13% 0% 4% 0% 190Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/03/19 4% 13% 12% 0% 0% 0% 66% 0% 0% 5% 0% 72Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/18/19 14% 5% 8% 1% 0% 0% 59% 12% 0% 1% 0% 470TR0795Page 6 of 20December 2019
TABLE E-1PFAS SIGNATURES FOR ON AND OFFSITE GROUNDWATER AND SURFACE WATER LOCATIONS Chemours Fayetteville Works, North CarolinaGeosyntec Consultants of NC P.C.PFAS SignatureArea MediaLocation IDSample DateHFPO-DAPFMOAAPFO2HxAPFO3OAPFO4DAPFO5DAPMPAPEPAPFESA-BP1PFESA-BP2PFECA-GTotal Table 3+ (ng/L)Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/18/19 16% 6% 9% 1% 0% 0% 55% 12% 0% 1% 0% 600Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence06/19/19 14% 10% 24% 4% 1% 0% 43% 0% 0% 5% 0% 180Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/01/19 4% 13% 23% 5% 3% 0% 43% 0% 0% 10% 0% 84Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence02/01/18 & 01/28/19 26% 7% 18% 1% 0% 0% 37% 9% 0% 3% 0% 550Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/03/19 8% 14% 26% 3% 0% 0% 41% 5% 0% 3% 0% 610Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/02/19 9% 16% 16% 0% 0% 0% 55% 0% 0% 5% 0% 81Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence01/26/18 & 08/15/19 12% 5% 9% 1% 0% 0% 57% 15% 0% 2% 0% 1,200Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence06/19/19 18% 5% 13% 2% 0% 0% 48% 11% 0% 2% 0% 990Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/04/19 13% 9% 17% 1% 0% 0% 49% 10% 0% 2% 0% 510Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence06/19/19 & 07/30/19 8% 17% 18% 0% 0% 0% 50% 0% 0% 7% 0% 100Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/15/19 11% 10% 13% 0% 0% 0% 56% 9% 0% 1% 0% 410Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/31/19 6% 6% 7% 1% 0% 0% 69% 10% 0% 1% 0% 190Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/14/19 2% 15% 19% 1% 0% 0% 62% 0% 0% 1% 0% 210Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence01/24/18 7% 9% 9% 0% 0% 0% 58% 16% 0% 2% 0% 140Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/07/19 8% 16% 22% 0% 0% 0% 48% 0% 0% 6% 0% 140Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/04/19 15% 8% 13% 2% 0% 0% 59% 0% 0% 2% 0% 98Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence02/13/19 36% 0% 6% 0% 0% 0% 59% 0% 0% 0% 0% 48Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence04/23/19 21% 6% 10% 1% 0% 0% 45% 14% 0% 3% 0% 470Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/03/19 14% 7% 34% 8% 1% 0% 22% 10% 0% 3% 0% 350Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence02/15/18 & 07/16/18 16% 0% 14% 0% 0% 0% 52% 18% 0% 0% 0% 970Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/11/19 20% 11% 10% 1% 0% 0% 46% 11% 0% 2% 0% 500Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/01/19 9% 10% 34% 4% 0% 0% 38% 0% 0% 5% 0% 200Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/13/19 7% 15% 29% 4% 0% 0% 38% 0% 0% 7% 0% 130Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/07/19 23% 2% 3% 0% 0% 0% 58% 10% 0% 3% 0% 510Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence02/14/18 14% 9% 15% 0% 0% 0% 62% 0% 0% 0% 0% 570Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence01/23/18 10% 5% 2% 0% 0% 0% 64% 18% 0% 0% 0% 110Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence02/05/18 & 08/08/19 16% 3% 9% 1% 0% 0% 59% 12% 0% 1% 0% 950Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/16/19 15% 10% 20% 3% 0% 0% 47% 0% 0% 4% 0% 140Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence01/24/18 13% 14% 16% 2% 0% 0% 49% 0% 0% 6% 0% 120Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/08/19 19% 3% 4% 0% 0% 0% 59% 12% 0% 2% 0% 350Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/14/19 26% 7% 14% 0% 0% 0% 53% 0% 0% 0% 0% 47Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/22/19 13% 8% 4% 0% 0% 0% 63% 10% 0% 2% 0% 220Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence04/02/19 18% 4% 16% 1% 0% 0% 47% 12% 0% 2% 0% 400Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/30/19 5% 4% 8% 0% 0% 0% 75% 7% 0% 1% 0% 760Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/17/19 22% 5% 16% 2% 0% 0% 53% 0% 0% 2% 0% 130Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence02/07/18 6% 14% 18% 0% 0% 0% 60% 0% 0% 2% 0% 230Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence02/12/18 65% 0% 35% 0% 0% 0% 0% 0% 0% 0% 0% 8Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/26/19 14% 9% 11% 1% 0% 0% 54% 9% 0% 2% 0% 330Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/18/17 & 01/28/19 14% 5% 10% 1% 0% 0% 56% 11% 0% 2% 0% 870Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence06/28/19 8% 11% 16% 1% 0% 0% 53% 8% 0% 3% 0% 450Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/03/19 3% 11% 12% 0% 0% 0% 67% 6% 0% 2% 0% 360Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/14/19 20% 10% 26% 3% 2% 0% 36% 0% 0% 3% 0% 170Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/14/19 18% 10% 14% 1% 0% 0% 46% 8% 0% 4% 0% 180Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence06/28/19 19% 6% 20% 3% 1% 0% 50% 0% 0% 1% 0% 180Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/06/19 8% 5% 4% 0% 0% 0% 68% 13% 0% 2% 0% 290Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence12/14/17 8% 11% 14% 0% 0% 0% 62% 0% 0% 4% 0% 160Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/08/19 6% 19% 27% 2% 0% 0% 41% 0% 0% 4% 0% 150Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/30/19 9% 12% 9% 0% 0% 0% 61% 0% 0% 8% 0% 91Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/07/19 28% 7% 12% 0% 0% 0% 38% 13% 0% 2% 0% 1,100Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/05/19 0% 23% 24% 0% 0% 0% 45% 0% 0% 9% 0% 140TR0795Page 7 of 20December 2019
TABLE E-1PFAS SIGNATURES FOR ON AND OFFSITE GROUNDWATER AND SURFACE WATER LOCATIONS Chemours Fayetteville Works, North CarolinaGeosyntec Consultants of NC P.C.PFAS SignatureArea MediaLocation IDSample DateHFPO-DAPFMOAAPFO2HxAPFO3OAPFO4DAPFO5DAPMPAPEPAPFESA-BP1PFESA-BP2PFECA-GTotal Table 3+ (ng/L)Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/18/17 15% 8% 22% 0% 0% 0% 42% 14% 0% 0% 0% 1,400Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/23/19 6% 10% 11% 0% 0% 0% 69% 0% 0% 3% 0% 120Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/24/19 0% 0% 100% 0% 0% 0% 0% 0% 0% 0% 0% 4Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/01/19 8% 11% 8% 0% 0% 0% 69% 0% 0% 3% 0% 75Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/29/19 18% 9% 12% 0% 0% 0% 44% 13% 0% 3% 0% 540Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/31/17 & 07/05/19 9% 14% 24% 1% 0% 0% 40% 7% 0% 5% 0% 580Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/22/19 10% 7% 19% 0% 0% 0% 65% 0% 0% 0% 0% 150Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/11/19 & 07/24/19 0% 0% 0% 0% 0% 79% 0% 0% 0% 0% 21% 11Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/23/19 18% 8% 10% 0% 0% 0% 51% 10% 0% 3% 0% 450Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/29/19 20% 8% 20% 2% 0% 0% 36% 11% 0% 2% 0% 890Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence05/29/19 & 08/06/19 25% 7% 15% 1% 0% 0% 39% 14% 0% 1% 0% 2,000Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/08/19 16% 9% 9% 0% 0% 0% 51% 12% 0% 3% 0% 280Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/22/19 21% 8% 12% 0% 0% 0% 47% 10% 0% 2% 0% 320Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence12/15/17 & 08/06/19 26% 7% 14% 1% 0% 0% 39% 13% 0% 1% 0% 2,300Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/08/19 21% 9% 8% 0% 0% 0% 51% 9% 0% 2% 0% 270Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/08/19 & 07/22/19 19% 9% 13% 0% 0% 0% 47% 9% 0% 3% 0% 320Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/18/19 8% 14% 25% 0% 0% 0% 49% 0% 0% 5% 0% 69Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/11/19 9% 11% 12% 0% 0% 5% 57% 0% 0% 5% 1% 170Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/18/17 & 09/10/19 40% 8% 18% 1% 0% 0% 23% 8% 0% 2% 0% 3,000Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/07/19 20% 11% 27% 3% 0% 0% 30% 8% 0% 2% 0% 240Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/07/19 0% 19% 15% 0% 0% 0% 47% 0% 0% 19% 0% 79Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/17/19 11% 7% 19% 3% 1% 0% 59% 0% 0% 1% 0% 240Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/17/19 12% 8% 16% 0% 0% 0% 62% 0% 0% 2% 0% 190Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/27/17 & 10/01/19 17% 8% 22% 2% 0% 0% 39% 11% 0% 2% 0% 1,500Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence04/10/19 & 09/25/19 25% 15% 22% 3% 0% 0% 26% 7% 0% 2% 0% 1,100Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/17/17 & 01/09/19 19% 11% 13% 1% 0% 0% 52% 0% 0% 4% 0% 620Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence03/18/19 & 04/09/19 22% 6% 12% 0% 0% 0% 61% 0% 0% 0% 0% 160Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/17/19 10% 8% 13% 1% 0% 0% 57% 10% 0% 1% 0% 460Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/12/19 10% 7% 14% 1% 0% 0% 57% 11% 0% 1% 0% 670Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/10/19 16% 6% 16% 1% 0% 0% 50% 10% 0% 0% 0% 380Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/06/19 12% 8% 12% 1% 0% 0% 53% 11% 0% 1% 0% 500Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence02/12/18 8% 15% 24% 2% 0% 0% 44% 0% 0% 6% 0% 120Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/19/19 19% 6% 16% 1% 0% 0% 44% 11% 0% 3% 0% 630Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence11/29/17 & 11/20/18 38% 0% 0% 0% 0% 0% 62% 0% 0% 0% 0% 1,000Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/18/19 8% 11% 11% 0% 0% 0% 68% 0% 0% 3% 0% 100Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/18/19 11% 13% 17% 0% 0% 0% 57% 0% 0% 2% 0% 88Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/18/19 7% 13% 13% 0% 0% 0% 64% 0% 0% 3% 0% 91Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/15/19 18% 7% 9% 1% 0% 0% 54% 10% 0% 1% 0% 520Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/18/17 & 08/12/19 41% 4% 9% 1% 0% 0% 37% 9% 0% 0% 0% 2,300Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/29/19 8% 9% 4% 0% 0% 0% 69% 10% 0% 1% 0% 250Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/01/19 11% 10% 16% 0% 0% 0% 63% 0% 0% 0% 0% 59Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/24/19 32% 5% 17% 3% 1% 0% 31% 10% 0% 0% 0% 650Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/24/17 18% 6% 16% 2% 0% 0% 45% 11% 0% 2% 0% 3,500Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/01/19 17% 8% 26% 5% 2% 0% 41% 0% 0% 1% 0% 160Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/08/19 10% 13% 11% 0% 0% 0% 63% 0% 0% 3% 0% 110Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/19/19 38% 5% 17% 3% 1% 0% 26% 10% 0% 0% 0% 650Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/18/19 13% 4% 4% 0% 0% 0% 65% 12% 0% 2% 0% 480Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/19/19 28% 9% 15% 1% 0% 0% 45% 0% 0% 1% 0% 220Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/24/19 34% 5% 18% 3% 1% 0% 29% 10% 0% 0% 0% 650Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence11/29/17 & 09/18/19 28% 6% 31% 5% 1% 0% 20% 8% 0% 1% 0% 2,700TR0795Page 8 of 20December 2019
TABLE E-1PFAS SIGNATURES FOR ON AND OFFSITE GROUNDWATER AND SURFACE WATER LOCATIONS Chemours Fayetteville Works, North CarolinaGeosyntec Consultants of NC P.C.PFAS SignatureArea MediaLocation IDSample DateHFPO-DAPFMOAAPFO2HxAPFO3OAPFO4DAPFO5DAPMPAPEPAPFESA-BP1PFESA-BP2PFECA-GTotal Table 3+ (ng/L)Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence11/29/17 & 09/24/19 32% 6% 16% 2% 1% 0% 31% 11% 0% 2% 0% 2,000Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/19/19 21% 7% 17% 1% 0% 0% 42% 9% 0% 1% 0% 400Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/04/19 12% 10% 14% 1% 0% 0% 52% 10% 0% 1% 0% 520Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/01/19 18% 5% 8% 0% 0% 0% 55% 11% 0% 3% 0% 120Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/18/17 & 10/23/17 12% 5% 7% 0% 0% 0% 63% 13% 0% 0% 0% 1,500Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence11/30/17 & 09/26/19 49% 5% 21% 2% 0% 0% 17% 5% 0% 1% 0% 3,200Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/19/19 26% 6% 18% 2% 0% 0% 39% 8% 0% 0% 0% 620Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/15/19 18% 5% 3% 0% 0% 0% 64% 10% 0% 1% 0% 460Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/22/19 33% 7% 24% 3% 1% 0% 22% 8% 0% 2% 0% 3,600Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence12/14/17 & 09/24/19 34% 5% 14% 2% 0% 0% 33% 9% 0% 1% 0% 2,000Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence12/14/17 & 10/01/19 16% 8% 22% 3% 0% 0% 39% 11% 0% 2% 0% 2,100Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/31/19 5% 8% 4% 0% 0% 0% 74% 9% 0% 0% 0% 470Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/19/19 14% 9% 16% 2% 1% 0% 49% 7% 0% 2% 0% 310Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/19/19 16% 10% 16% 2% 0% 0% 53% 0% 0% 2% 0% 230Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/13/17 & 09/18/17 19% 15% 17% 0% 0% 0% 49% 0% 0% 0% 0% 45Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/17/19 8% 8% 10% 0% 0% 0% 70% 0% 0% 4% 0% 130Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence02/01/18 8% 6% 5% 0% 0% 0% 69% 12% 0% 0% 0% 170Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/25/19 16% 5% 9% 1% 0% 0% 57% 10% 0% 1% 0% 470Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/14/19 8% 6% 3% 0% 0% 0% 71% 10% 0% 0% 0% 240Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence02/01/18 7% 7% 6% 0% 0% 0% 67% 13% 0% 0% 0% 180Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/19/19 21% 9% 20% 2% 1% 0% 37% 9% 0% 1% 0% 1,000Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/16/19 21% 8% 15% 0% 0% 0% 45% 10% 0% 1% 0% 1,300Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/20/19 14% 8% 18% 3% 1% 0% 46% 9% 0% 2% 0% 430Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/18/19 14% 9% 12% 0% 0% 0% 43% 17% 0% 6% 0% 160Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/29/17 & 01/28/19 19% 10% 19% 1% 1% 0% 38% 7% 0% 4% 0% 580Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence06/06/19 19% 10% 20% 2% 1% 0% 36% 8% 0% 4% 0% 640Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/21/19 9% 8% 33% 6% 4% 0% 38% 0% 0% 2% 0% 150Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/08/17 & 10/25/18 21% 0% 23% 0% 0% 0% 56% 0% 0% 0% 0% 1,100Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/19/17 & 09/27/19 17% 5% 8% 1% 0% 0% 52% 17% 0% 1% 0% 1,500Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/29/19 11% 10% 16% 1% 0% 0% 51% 8% 0% 3% 0% 370Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/26/19 24% 8% 16% 0% 0% 0% 52% 0% 0% 0% 0% 87Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/08/17 & 07/05/19 30% 0% 11% 0% 0% 0% 59% 0% 0% 0% 0% 40Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/08/17 & 10/01/19 24% 9% 15% 2% 0% 0% 39% 9% 0% 1% 0% 1,200Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/03/19 0% 27% 27% 0% 0% 0% 41% 0% 0% 5% 0% 100Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/19/19 6% 15% 13% 0% 0% 0% 64% 0% 0% 3% 0% 140Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/14/19 10% 8% 8% 0% 0% 0% 61% 11% 0% 2% 0% 460Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/23/19 21% 4% 7% 0% 0% 0% 67% 0% 0% 2% 0% 190Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence02/01/18 & 01/28/19 19% 9% 13% 1% 0% 0% 46% 11% 0% 1% 0% 970Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/18/17 & 01/28/19 11% 5% 9% 1% 0% 0% 62% 10% 0% 3% 0% 930Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence03/11/19 27% 9% 18% 2% 0% 0% 32% 9% 0% 2% 0% 1,100Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/18/17 & 09/03/19 27% 7% 16% 0% 0% 0% 35% 11% 0% 2% 0% 1,800Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence01/24/18 13% 5% 13% 0% 0% 0% 56% 14% 0% 0% 0% 1,700Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/14/19 12% 12% 19% 1% 0% 0% 46% 6% 0% 5% 0% 260Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/29/19 5% 15% 42% 2% 0% 0% 33% 0% 0% 4% 0% 160Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/17/17 & 09/24/19 21% 9% 15% 1% 0% 0% 42% 9% 0% 3% 0% 1,000Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/22/17 & 08/28/19 17% 6% 18% 2% 1% 0% 43% 11% 0% 2% 0% 7,200Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/04/19 5% 14% 15% 0% 0% 0% 61% 0% 0% 5% 0% 160Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/23/19 12% 13% 14% 0% 0% 0% 53% 0% 0% 8% 0% 130Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/01/19 13% 10% 24% 2% 0% 0% 39% 9% 0% 2% 0% 250Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/09/19 8% 8% 15% 1% 0% 0% 63% 0% 0% 5% 0% 240TR0795Page 9 of 20December 2019
TABLE E-1PFAS SIGNATURES FOR ON AND OFFSITE GROUNDWATER AND SURFACE WATER LOCATIONS Chemours Fayetteville Works, North CarolinaGeosyntec Consultants of NC P.C.PFAS SignatureArea MediaLocation IDSample DateHFPO-DAPFMOAAPFO2HxAPFO3OAPFO4DAPFO5DAPMPAPEPAPFESA-BP1PFESA-BP2PFECA-GTotal Table 3+ (ng/L)Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/29/19 9% 7% 13% 1% 0% 0% 56% 10% 0% 3% 0% 770Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/03/19 10% 19% 6% 0% 0% 0% 62% 0% 0% 4% 0% 100Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/26/19 10% 11% 29% 4% 1% 0% 36% 7% 0% 3% 0% 450Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/24/17 18% 5% 14% 2% 1% 0% 46% 13% 0% 1% 0% 8,300Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/17/19 8% 9% 4% 0% 0% 0% 67% 9% 0% 2% 0% 250Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/15/19 12% 10% 12% 1% 0% 0% 53% 9% 0% 4% 0% 210Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/04/19 6% 14% 14% 0% 0% 0% 60% 0% 0% 6% 0% 220Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/10/19 12% 7% 17% 2% 0% 0% 50% 6% 0% 6% 0% 360Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/07/19 9% 9% 33% 2% 0% 0% 36% 7% 0% 3% 0% 690Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence01/23/18 6% 9% 11% 0% 0% 0% 47% 20% 0% 7% 0% 120Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence02/22/18 & 09/25/19 15% 10% 14% 2% 0% 0% 47% 11% 0% 1% 0% 1,700Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence05/01/18 & 07/23/18 16% 5% 7% 0% 0% 0% 57% 16% 0% 0% 0% 1,200Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/22/19 4% 15% 17% 0% 1% 0% 57% 0% 0% 6% 0% 190Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/31/19 11% 10% 11% 0% 0% 0% 43% 17% 0% 7% 0% 140Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/20/17 & 11/07/17 25% 0% 9% 0% 0% 0% 67% 0% 0% 0% 0% 63Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/20/17 & 11/07/17 35% 0% 12% 0% 0% 0% 53% 0% 0% 0% 0% 60Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/07/19 6% 11% 8% 0% 0% 0% 67% 0% 0% 7% 0% 210Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/08/19 12% 13% 23% 2% 1% 0% 37% 7% 0% 6% 0% 210Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/25/19 5% 14% 11% 0% 0% 0% 62% 6% 0% 2% 0% 450Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/01/19 10% 13% 21% 0% 0% 0% 51% 0% 0% 5% 0% 57Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/22/19 14% 14% 22% 0% 0% 0% 44% 0% 0% 7% 0% 140Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/25/19 9% 17% 25% 0% 1% 0% 42% 0% 0% 6% 0% 160Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/04/19 18% 12% 22% 1% 0% 0% 42% 0% 0% 5% 0% 170Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/19/19 16% 9% 18% 1% 0% 0% 41% 12% 0% 3% 0% 210Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence12/04/17 & 10/08/19 23% 8% 18% 1% 0% 0% 37% 11% 0% 1% 0% 2,400Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/19/19 17% 15% 26% 2% 0% 0% 33% 0% 0% 7% 0% 170Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence02/22/18 & 09/25/19 13% 5% 12% 1% 0% 0% 54% 15% 0% 1% 0% 1,500Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/26/19 9% 10% 13% 1% 0% 0% 50% 9% 0% 9% 0% 480Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/07/19 16% 8% 14% 2% 0% 0% 46% 10% 0% 3% 0% 260Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/10/19 14% 6% 18% 0% 0% 0% 56% 0% 0% 5% 0% 140Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/07/19 9% 9% 14% 2% 0% 0% 61% 0% 0% 6% 0% 160Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence05/29/19 20% 3% 33% 3% 0% 0% 34% 0% 0% 7% 0% 220Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/10/19 21% 6% 19% 0% 0% 0% 48% 0% 0% 6% 0% 190Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/18/19 9% 14% 22% 0% 0% 0% 48% 0% 0% 7% 0% 120Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/09/19 15% 6% 19% 2% 0% 0% 52% 0% 0% 6% 0% 160Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/19/17 & 07/23/19 17% 9% 13% 1% 0% 0% 47% 10% 0% 2% 0% 2,700Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/03/19 8% 13% 5% 0% 0% 0% 61% 0% 0% 13% 0% 120Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/18/17 & 10/10/19 23% 8% 21% 1% 0% 0% 36% 10% 0% 1% 0% 1,300Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/19/17 17% 10% 14% 0% 0% 0% 59% 0% 0% 0% 0% 78Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/03/19 15% 7% 8% 0% 0% 0% 52% 9% 0% 9% 0% 290Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence12/26/18 15% 5% 5% 0% 0% 0% 69% 6% 0% 0% 0% 110Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/08/19 9% 5% 7% 1% 0% 0% 66% 11% 0% 2% 0% 510Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/08/19 16% 9% 13% 1% 1% 0% 48% 9% 0% 4% 0% 600Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence01/12/18 & 10/01/19 15% 9% 27% 4% 1% 0% 35% 8% 0% 1% 0% 1,600Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/25/19 16% 11% 25% 1% 0% 0% 35% 7% 0% 4% 0% 520Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/30/19 0% 0% 100% 0% 0% 0% 0% 0% 0% 0% 0% 5.1Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/08/17 & 01/28/19 20% 7% 17% 1% 0% 0% 43% 9% 0% 2% 0% 690Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/13/17 & 10/10/19 24% 9% 22% 2% 1% 0% 32% 10% 0% 2% 0% 1,500Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence12/14/17 13% 0% 24% 0% 0% 0% 63% 0% 0% 0% 0% 620Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence12/07/17 19% 6% 15% 3% 0% 0% 46% 10% 0% 0% 0% 2,400TR0795Page 10 of 20December 2019
TABLE E-1PFAS SIGNATURES FOR ON AND OFFSITE GROUNDWATER AND SURFACE WATER LOCATIONS Chemours Fayetteville Works, North CarolinaGeosyntec Consultants of NC P.C.PFAS SignatureArea MediaLocation IDSample DateHFPO-DAPFMOAAPFO2HxAPFO3OAPFO4DAPFO5DAPMPAPEPAPFESA-BP1PFESA-BP2PFECA-GTotal Table 3+ (ng/L)Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence12/11/17 8% 10% 21% 5% 0% 0% 51% 0% 0% 6% 0% 82Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence01/15/18 22% 0% 14% 0% 0% 0% 64% 0% 0% 0% 0% 22Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence12/07/17 & 08/28/19 15% 8% 39% 5% 2% 0% 21% 7% 0% 2% 0% 1,400Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence12/07/17 & 08/28/19 18% 8% 25% 2% 1% 0% 36% 8% 0% 2% 0% 2,200Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/19/19 11% 13% 18% 0% 0% 0% 54% 0% 0% 5% 0% 48Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/08/19 11% 10% 26% 4% 1% 0% 36% 7% 0% 4% 0% 340Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/19/19 13% 12% 22% 2% 0% 0% 47% 0% 0% 5% 0% 130Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/29/19 7% 13% 11% 0% 0% 0% 68% 0% 0% 2% 0% 140Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/28/19 8% 14% 24% 2% 0% 0% 48% 0% 0% 4% 0% 170Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/19/19 12% 12% 21% 2% 0% 0% 50% 0% 0% 4% 0% 150Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/19/19 12% 13% 18% 0% 0% 0% 57% 0% 0% 0% 0% 72Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/17/19 8% 11% 10% 0% 0% 0% 67% 0% 0% 4% 0% 63Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/19/19 6% 13% 9% 0% 0% 0% 68% 0% 0% 4% 0% 160Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/02/19 10% 11% 18% 3% 0% 0% 58% 0% 0% 0% 0% 97Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/24/19 10% 12% 26% 3% 0% 0% 46% 0% 0% 2% 0% 240Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/23/19 8% 12% 15% 1% 0% 0% 59% 0% 0% 4% 0% 200Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/28/19 14% 11% 18% 0% 0% 0% 57% 0% 0% 0% 0% 56Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/23/19 14% 12% 27% 2% 1% 0% 41% 0% 0% 3% 0% 190Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/09/19 8% 9% 9% 0% 0% 0% 63% 8% 0% 2% 0% 150Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/23/19 8% 11% 11% 0% 0% 0% 65% 0% 0% 4% 0% 170Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/28/19 12% 8% 12% 0% 0% 0% 64% 0% 0% 3% 0% 170Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/03/19 2% 12% 12% 0% 0% 0% 69% 0% 0% 4% 0% 120Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/17/19 17% 12% 23% 2% 0% 0% 38% 6% 0% 2% 0% 340Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/25/18 7% 12% 20% 3% 0% 0% 54% 0% 0% 5% 0% 130Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/22/19 5% 17% 11% 0% 0% 0% 62% 0% 0% 5% 0% 120Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/24/19 13% 12% 20% 1% 0% 0% 42% 10% 0% 1% 0% 430Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/29/19 9% 8% 23% 2% 0% 0% 45% 9% 0% 3% 0% 370Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence01/10/18 & 08/28/19 11% 11% 8% 0% 0% 0% 63% 0% 0% 7% 0% 46Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/22/19 14% 9% 17% 1% 0% 0% 50% 7% 0% 1% 0% 420Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/24/19 13% 11% 19% 1% 0% 0% 44% 10% 0% 1% 0% 410Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/23/19 8% 11% 14% 0% 0% 0% 62% 0% 0% 4% 0% 83Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/08/19 4% 14% 12% 0% 0% 0% 60% 0% 0% 10% 0% 140Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/26/19 5% 18% 24% 2% 0% 0% 43% 0% 0% 8% 0% 120Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/22/19 19% 13% 11% 0% 0% 0% 49% 0% 0% 7% 0% 77Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/26/17 & 08/06/19 18% 4% 9% 0% 0% 0% 59% 9% 0% 0% 0% 1,200Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence12/15/17 35% 0% 65% 0% 0% 0% 0% 0% 0% 0% 0% 15Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/04/19 7% 17% 12% 0% 0% 0% 54% 0% 0% 10% 0% 59Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence11/30/17 3% 8% 11% 0% 0% 0% 61% 9% 0% 7% 0% 250Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/18/19 18% 6% 10% 0% 0% 0% 46% 16% 0% 3% 0% 240Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/29/19 8% 8% 12% 1% 0% 0% 58% 10% 0% 4% 0% 570Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence04/23/19 31% 9% 20% 2% 0% 0% 29% 8% 0% 1% 0% 1,100Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence03/29/19 13% 7% 17% 3% 1% 0% 46% 8% 0% 5% 0% 280Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence12/05/17 25% 0% 12% 0% 0% 0% 63% 0% 0% 0% 0% 600Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence10/19/17 & 08/27/19 16% 6% 22% 4% 1% 0% 37% 12% 0% 2% 0% 2,400Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence12/07/17 7% 9% 9% 1% 0% 0% 64% 0% 0% 10% 0% 170Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/29/19 10% 8% 12% 1% 0% 0% 56% 9% 0% 4% 0% 550Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence08/01/19 7% 9% 28% 3% 1% 0% 40% 8% 0% 5% 0% 470Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/03/19 & 07/10/19 26% 0% 15% 0% 0% 0% 59% 0% 0% 0% 0% 93Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/11/19 0% 0% 100% 0% 0% 0% 0% 0% 0% 0% 0% 2.9Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/22/19 13% 0% 31% 0% 0% 0% 55% 0% 0% 0% 0% 31TR0795Page 11 of 20December 2019
TABLE E-1PFAS SIGNATURES FOR ON AND OFFSITE GROUNDWATER AND SURFACE WATER LOCATIONS Chemours Fayetteville Works, North CarolinaGeosyntec Consultants of NC P.C.PFAS SignatureArea MediaLocation IDSample DateHFPO-DAPFMOAAPFO2HxAPFO3OAPFO4DAPFO5DAPMPAPEPAPFESA-BP1PFESA-BP2PFECA-GTotal Table 3+ (ng/L)Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence09/11/19 4% 8% 16% 3% 0% 0% 66% 0% 0% 2% 0% 140Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/15/19 17% 4% 28% 1% 0% 0% 49% 0% 0% 0% 0% 190Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence06/26/19 & 08/07/19 25% 20% 20% 1% 0% 0% 29% 5% 0% 0% 0% 750Aerial - Mixture of PFASOffsite Drinking WaterPrivate Residence07/18/19 28% 0% 26% 0% 0% 0% 46% 0% 0% 0% 0% 61Aerial - Mixture of PFASOffsite GroundwaterBLADEN-1D11/07/19 19% 3% 12% 1% 0% 0% 50% 15% 0% 0% 0% 740Aerial - Mixture of PFASOffsite GroundwaterBLADEN-2D10/29/19 0% 0%0% 0% 0% 0% 0% 0% 0% 0% 0% NDAerial - Mixture of PFASOffsite GroundwaterBLADEN-2S10/22/19 6% 17% 23% 0% 0% 0% 45% 0% 0% 8% 0% 130Aerial - Mixture of PFASOffsite GroundwaterBLADEN-4S10/22/19 47% 0% 53% 0% 0% 0% 0% 0% 0% 0% 0% 5.8Aerial - Mixture of PFASOffsite GroundwaterCumberland-2S10/23/190% 0% 0% 0% 0% 100% 0% 0% 0% 0% 0% 38Aerial - Mixture of PFASOffsite GroundwaterCumberland-3D10/23/190% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% NDAerial - Mixture of PFASOffsite GroundwaterCUMBERLAND-3S10/22/1912% 9% 29% 2% 0% 0% 44% 0% 0% 4% 0% 140Aerial - Mixture of PFASOffsite GroundwaterCUMBERLAND-4D10/24/190% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% NDAerial - Mixture of PFASOffsite GroundwaterCUMBERLAND-4S10/25/1922% 4% 22% 4% 2% 0% 35% 9% 0% 2% 0% 350Aerial - Mixture of PFASOffsite GroundwaterCumberland-5S10/23/190% 0% 0% 0% 0% 100% 0% 0% 0% 0% 0% 50Aerial - Mixture of PFASOnsite GroundwaterPIW-10S10/29/19 22% 11% 15% 3% 1% 0% 35% 12% 0% 1% 0% 16,000Aerial - Mixture of PFASOnsite GroundwaterPIW-4D10/31/19 61% 0% 39%0% 0% 0% 0% 0% 0% 0% 0% 5.9Aerial - Mixture of PFASOnsite GroundwaterPIW-5S10/29/19 16% 24% 13% 3% 2% 1% 29% 12% 1% 0% 0% 260,000Aerial - Mixture of PFASOnsite GroundwaterPW-0311/06/19 19% 2% 6% 2%1% 0% 47% 24% 0% 0% 0% 320,000Aerial - Mixture of PFASOnsite GroundwaterPW-0410/30/19 23% 8% 22% 8%2%0%26%11%0%0%0% 4,300Aerial - Mixture of PFASOnsite GroundwaterPW-0510/30/19 29% 6% 17% 2%3%0%32%10%0%1%0% 4,100Aerial - Mixture of PFASOnsite GroundwaterPW-0610/29/19 30% 6% 16% 3%2%0%32%11%0%1%0% 4,400Aerial - Mixture of PFASOnsite GroundwaterPW-0711/08/19 20% 8% 22% 3%1%0%36%10%0%0%0% 3,900Aerial - Mixture of PFASOnsite GroundwaterPW-0910/30/19 0% 0% 0% 0% 0%0%0%0%0%0%0% NDAerial - Mixture of PFASOnsite GroundwaterPW-1211/05/19 0% 0% 0% 0% 0%0%0%0%0%0%0% NDAerial - Mixture of PFASOnsite GroundwaterPW-1311/08/19 0% 0% 0% 0% 0%0%0%0%0%0%0% NDAerial - Mixture of PFASOffsite GroundwaterROBESON-1S10/31/19 0% 19% 13% 0% 0% 0% 46% 0% 0% 22% 0% 39Aerial - Mixture of PFASOnsite Surface WaterSEEP-B-202/05/19 21% 4%9%2%1%1%34%18%8%2%0%180,000Aerial - Predominant PMPA or HFPO-DA Onsite GroundwaterBCA-0407/09/19 26% 0% 0% 0% 0% 0% 74% 0% 0% 0% 0% 27Aerial - Predominant PMPA or HFPO-DA Offsite GroundwaterBLADEN-4D08/28/19 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 9.2Aerial - Predominant PMPA or HFPO-DA Offsite GroundwaterCUMBERLAND-2D09/16/19 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 10Aerial - Predominant PMPA or HFPO-DA Onsite GroundwaterSMW-1006/27/19 0% 0% 0% 0% 0% 6% 94% 0% 0% 0% 0% 830Aerial - Predominant PMPA or HFPO-DA Onsite GroundwaterMW-2806/26/19 100%0%0%0%0%0%0%0%0%0%0% 2,900Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence01/30/18 17% 0% 0% 0% 0% 0% 83% 0% 0% 0% 0% 170Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence12/14/17 8% 0% 0% 0% 0% 0% 92% 0% 0% 0% 0% 250Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence12/15/17 0% 0% 17% 0% 0% 0% 83% 0% 0% 0% 0% 13Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence07/26/19 11% 0% 0% 0% 0% 0% 89% 0% 0% 0% 0% 31Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence09/27/19 5% 5% 9% 0% 0% 0% 75% 0% 0% 5% 0% 150Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence09/19/19 8% 4% 6% 0% 0% 0% 79% 0% 0% 2% 0% 140Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence07/31/19 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 5.5Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/07/19 7% 5% 7% 0% 0% 0% 78% 0% 0% 3% 0% 190Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/19/17 11% 4% 2% 0% 0% 0% 78% 0% 0% 4% 0% 190Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/19/17 14% 0% 0% 0% 0% 0% 86% 0% 0% 0% 0% 62Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/25/17 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 14Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/10/19 13% 0% 13% 0% 0% 0% 74% 0% 0% 0% 0% 92Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence07/26/19 5% 4% 2% 0% 0% 0% 90% 0% 0% 0% 0% 130Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/03/19 2% 7% 2% 0% 0% 0% 88% 0% 0% 1% 0% 200Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/21/19 7% 6% 0% 0% 0% 0% 87% 0% 0% 0% 0% 100Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence09/30/19 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 24Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence05/02/18 100%0%0%0%0%0%0%0%0%0%0% 5.7Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/03/19 7% 0% 4% 0% 0% 0% 89% 0% 0% 0% 0% 59TR0795Page 12 of 20December 2019
TABLE E-1PFAS SIGNATURES FOR ON AND OFFSITE GROUNDWATER AND SURFACE WATER LOCATIONS Chemours Fayetteville Works, North CarolinaGeosyntec Consultants of NC P.C.PFAS SignatureArea MediaLocation IDSample DateHFPO-DAPFMOAAPFO2HxAPFO3OAPFO4DAPFO5DAPMPAPEPAPFESA-BP1PFESA-BP2PFECA-GTotal Table 3+ (ng/L)Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/21/19 9% 3% 1% 0% 0% 0% 87% 0% 0% 0% 0% 240Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence09/12/19 11% 4% 1% 0% 0% 0% 85% 0% 0% 0% 0% 190Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence07/26/19 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 49Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence01/24/18 & 06/12/19 10% 0% 0% 0% 0% 0% 90% 0% 0% 0% 0% 630Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/21/19 10% 8% 8% 0% 0% 0% 72% 0% 0% 2% 0% 150Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence02/07/18 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 15Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence09/20/19 0% 12% 0% 0% 0% 0% 81% 0% 0% 7% 0% 91Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence12/15/17 11% 0% 0% 0% 0% 0% 89% 0% 0% 0% 0% 200Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/23/19 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 22Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence09/25/19 4% 0% 0% 0% 0% 0% 96% 0% 0% 0% 0% 110Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence12/07/17 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 20Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/18/19 12% 0% 3% 0% 0% 0% 79% 0% 0% 6% 0% 68Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/18/19 0% 0% 13% 0% 0% 0% 76% 0% 0% 11% 0% 21Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/16/17 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 26Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence09/18/19 11% 0% 9% 0% 0% 0% 80% 0% 0% 0% 0% 78Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence09/16/19 10% 8% 11% 0% 0% 0% 71% 0% 0% 0% 0% 170Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence08/14/19 10% 7% 7% 0% 0% 0% 76% 0% 0% 0% 0% 110Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/23/19 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 38Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence08/22/19 0% 0% 5% 0% 0% 0% 95% 0% 0% 0% 0% 43Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence09/20/19 0% 0% 10% 0% 0% 0% 90% 0% 0% 0% 0% 51Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence09/13/19 16% 0% 6% 0% 0% 0% 78% 0% 0% 0% 0% 91Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence07/22/19 8% 0% 3% 0% 0% 0% 89% 0% 0% 0% 0% 170Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence06/18/19 7% 0% 4% 0% 0% 0% 89% 0% 0% 0% 0% 160Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/02/19 9% 0% 0% 0% 0% 0% 91% 0% 0% 0% 0% 48Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence08/08/19 7% 7% 11% 0% 0% 0% 75% 0% 0% 0% 0% 48Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence06/21/19 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 14Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence08/14/19 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 18Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence09/20/19 4% 9% 11% 0% 0% 0% 72% 0% 0% 5% 0% 110Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence12/14/17 30% 0% 0% 0% 0% 0% 70% 0% 0% 0% 0% 17Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence09/30/19 8% 0% 8% 0% 0% 0% 78% 0% 0% 7% 0% 44Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence12/07/17 18% 0% 0% 0% 0% 0% 82% 0% 0% 0% 0% 39Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence06/18/19 9% 0% 7% 0% 0% 0% 85% 0% 0% 0% 0% 270Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence12/07/17 4% 0% 0% 0% 0% 0% 96% 0% 0% 0% 0% 220Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence09/12/19 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 31Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence07/19/19 0% 0% 10% 0% 0% 0% 90% 0% 0% 0% 0% 22Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence06/18/19 6% 11% 9% 0% 0% 0% 72% 0% 0% 3% 0% 250Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence09/11/19 3% 8% 9% 0% 0% 0% 76% 0% 0% 4% 0% 98Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence06/21/19 0% 0% 3% 0% 0% 0% 97% 0% 0% 0% 0% 110Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence06/18/19 10% 0% 7% 0% 0% 0% 83% 0% 0% 0% 0% 240Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence09/27/19 4% 3% 1% 0% 0% 0% 90% 0% 0% 1% 0% 230Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence07/29/19 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 27Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence06/21/19 0% 0% 5% 0% 0% 0% 95% 0% 0% 0% 0% 69Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence07/18/19 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 22Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence 01/29/18 & 06/12/19100%0%0%0%0%0%0%0%0%0%0% 1.8Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence02/13/18 & 07/25/19 10% 0% 0% 0% 0% 0% 90% 0% 0% 0% 0% 12Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/21/19 4% 8% 7% 0% 0% 0% 82% 0% 0% 0% 0% 150Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/03/19 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 74Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence09/26/19 0% 4% 0% 0% 0% 0% 96% 0% 0% 0% 0% 220Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence09/26/19 0% 4% 2% 0% 0% 0% 94% 0% 0% 0% 0% 140Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/24/17 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 42TR0795Page 13 of 20December 2019
TABLE E-1PFAS SIGNATURES FOR ON AND OFFSITE GROUNDWATER AND SURFACE WATER LOCATIONS Chemours Fayetteville Works, North CarolinaGeosyntec Consultants of NC P.C.PFAS SignatureArea MediaLocation IDSample DateHFPO-DAPFMOAAPFO2HxAPFO3OAPFO4DAPFO5DAPMPAPEPAPFESA-BP1PFESA-BP2PFECA-GTotal Table 3+ (ng/L)Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence08/14/19 0% 5% 2% 0% 0% 0% 93% 0% 0% 0% 0% 120Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/08/19 2% 13% 8% 0% 0% 0% 73% 0% 0% 4% 0% 190Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/18/19 10% 0% 0% 0% 0% 0% 90% 0% 0% 0% 0% 33Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/17/17 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 40Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/17/19 7% 7% 4% 0% 0% 0% 80% 0% 0% 2% 0% 95Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence 01/23/18 & 06/05/19100%0%0%0%0%0%0%0%0%0%0% 18Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence08/15/19 0% 0% 8% 0% 0% 0% 92% 0% 0% 0% 0% 20Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/21/19 7% 9% 7% 0% 0% 0% 77% 0% 0% 0% 0% 210Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/18/19 12% 9% 6% 0% 0% 0% 72% 0% 0% 0% 0% 150Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence01/31/18 4% 6% 3% 0% 0% 0% 87% 0% 0% 0% 0% 170Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/23/19 0% 7% 2% 0% 0% 0% 91% 0% 0% 0% 0% 140Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence08/15/19 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 7.9Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence08/26/19 8% 5% 4% 0% 0% 0% 83% 0% 0% 0% 0% 130Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/08/19 0% 11% 7% 0% 0% 0% 78% 0% 0% 4% 0% 73Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/02/19 0% 7% 0% 0% 0% 0% 93% 0% 0% 0% 0% 82Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence09/25/19 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 51Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/17/19 0% 11% 5% 0% 0% 0% 84% 0% 0% 0% 0% 61Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/17/19 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 15Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/17/19 5% 11% 12% 0% 0% 0% 70% 0% 0% 2% 0% 160Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence09/30/19 10% 0% 0% 0% 0% 0% 84% 0% 0% 7% 0% 88Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/09/19 9% 0% 2% 0% 0% 0% 85% 0% 0% 4% 0% 110Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/17/19 7% 9% 9% 0% 0% 0% 73% 0% 0% 2% 0% 170Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/17/19 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 42Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence08/14/19 4% 0% 0% 0% 0% 0% 96% 0% 0% 0% 0% 78Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence08/26/19 3% 9% 8% 0% 0% 0% 79% 0% 0% 0% 0% 98Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/17/19 5% 6% 3% 0% 0% 0% 86% 0% 0% 0% 0% 110Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence08/15/19 100%0%0%0%0%0%0%0%0%0%0% 13Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence01/26/18 8% 0% 0% 0% 0% 0% 92% 0% 0% 0% 0% 400Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence07/23/19 6% 9% 5% 0% 0% 0% 76% 0% 0% 3% 0% 64Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence08/28/19 4% 9% 0% 0% 0% 0% 87% 0% 0% 0% 0% 77Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence09/25/19 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 11Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence09/19/19 5% 7% 6% 0% 0% 0% 80% 0% 0% 2% 0% 110Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence09/13/19 4% 10% 15% 0% 0% 0% 70% 0% 0% 2% 0% 200Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence06/24/19 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 14Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/19/17 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 21Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence06/20/19 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 69Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence06/20/19 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 10Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence06/20/19 9% 0% 2% 0% 0% 0% 89% 0% 0% 0% 0% 100Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence06/20/19 5% 0% 0% 0% 0% 0% 95% 0% 0% 0% 0% 82Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence06/18/19 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 19Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence08/09/19 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 43Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence09/12/19 13% 0% 12% 0% 0% 0% 75% 0% 0% 0% 0% 43Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/16/17 26% 0% 0% 0% 0% 0% 74% 0% 0% 0% 0% 190Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence08/07/19 6% 0% 0% 0% 0% 0% 94% 0% 0% 0% 0% 70Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/21/19 0% 19% 7% 0% 0% 0% 73% 0% 0% 0% 0% 31Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence06/24/19 8% 0% 10% 0% 0% 0% 82% 0% 0% 0% 0% 200Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence07/17/19 7% 4% 2% 0% 0% 0% 86% 0% 0% 0% 0% 130Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence02/07/18 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 22Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence08/19/19 3% 5% 5% 0% 0% 0% 87% 0% 0% 0% 0% 150Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence 10/26/17 & 06/06/19100%0%0%0%0%0%0%0%0%0%0% 12TR0795Page 14 of 20December 2019
TABLE E-1PFAS SIGNATURES FOR ON AND OFFSITE GROUNDWATER AND SURFACE WATER LOCATIONS Chemours Fayetteville Works, North CarolinaGeosyntec Consultants of NC P.C.PFAS SignatureArea MediaLocation IDSample DateHFPO-DAPFMOAAPFO2HxAPFO3OAPFO4DAPFO5DAPMPAPEPAPFESA-BP1PFESA-BP2PFECA-GTotal Table 3+ (ng/L)Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence01/25/18 12% 8% 0% 0% 0% 0% 78% 0% 0% 2% 0% 110Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence03/02/18 14% 0% 0% 0% 0% 0% 86% 0% 0% 0% 0% 43Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence 03/16/18 & 07/10/19100%0%0%0%0%0%0%0%0%0%0% 1.7Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence 10/18/17 & 10/31/18100%0%0%0%0%0%0%0%0%0%0% 920Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence01/30/18 6% 0% 0% 0% 0% 0% 94% 0% 0% 0% 0% 86Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence01/30/18 & 03/25/19 8% 3% 0% 0% 0% 0% 89% 0% 0% 0% 0% 170Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/26/17 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 15Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence07/11/18 & 09/26/19 13% 5% 0% 0% 0% 0% 82% 0% 0% 0% 0% 180Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence01/24/18 7% 0% 0% 0% 0% 0% 93% 0% 0% 0% 0% 84Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/17/17 5% 6% 0% 0% 0% 0% 88% 0% 0% 0% 0% 84Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence 01/31/18 & 03/28/18100%0%0%0%0%0%0%0%0%0%0% 1.9Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/10/17 14% 6% 5% 0% 0% 0% 75% 0% 0% 0% 0% 110Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence01/30/18 20% 0% 2% 0% 0% 0% 77% 0% 0% 0% 0% 89Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/03/17 & 10/27/17 13% 11% 0% 0% 0% 0% 76% 0% 0% 0% 0% 62Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/23/17 22% 0% 0% 0% 0% 0% 78% 0% 0% 0% 0% 45Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence01/30/18 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 30Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence02/06/18 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 41Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence07/26/19 0% 9% 0% 0% 0% 0% 91% 0% 0% 0% 0% 61Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence02/06/18 14% 0% 0% 0% 0% 0% 86% 0% 0% 0% 0% 37Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence01/26/18 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 44Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence01/30/18 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 31Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence01/30/18 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 24Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/03/19 3% 6% 0% 0% 0% 0% 92% 0% 0% 0% 0% 110Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/03/19 0% 12% 4% 0% 0% 0% 82% 0% 0% 2% 0% 120Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/02/19 3% 14% 4% 0% 0% 0% 77% 0% 0% 2% 0% 110Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence11/10/17 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 13Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/02/19 2% 5% 0% 0% 0% 0% 92% 0% 0% 0% 0% 120Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/23/17 100%0%0%0%0%0%0%0%0%0%0% 32Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/02/19 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 39Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/02/19 4% 15% 7% 0% 0% 0% 73% 0% 0% 1% 0% 290Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence01/30/18 12% 0% 12% 0% 0% 0% 75% 0% 0% 0% 0% 520Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence 02/15/18 & 11/27/18100%0%0%0%0%0%0%0%0%0%0% 640Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence 02/13/18 & 06/04/19100%0%0%0%0%0%0%0%0%0%0% 44Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence01/30/18 8% 0% 0% 0% 0% 0% 92% 0% 0% 0% 0% 130Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence02/07/18 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 33Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence03/09/18 8% 5% 2% 0% 0% 0% 86% 0% 0% 0% 0% 130Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence02/13/18 19% 0% 0% 0% 0% 0% 81% 0% 0% 0% 0% 59Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence02/13/18 12% 0% 0% 0% 0% 0% 88% 0% 0% 0% 0% 35Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence 02/08/18 & 07/24/19100%0%0%0%0%0%0%0%0%0%0% 5.2Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence01/24/18 21% 0% 0% 0% 0% 0% 79% 0% 0% 0% 0% 57Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence01/31/18 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 19Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/03/17 & 12/13/17 13% 0% 0% 0% 0% 0% 87% 0% 0% 0% 0% 44Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/03/19 6% 9% 12% 0% 0% 0% 70% 0% 0% 2% 0% 90Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence02/08/18 & 03/28/18 8% 0% 0% 0% 0% 0% 92% 0% 0% 0% 0% 23Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence01/31/18 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 47Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence02/20/18 & 06/03/19 21% 0% 0% 0% 0% 0% 79% 0% 0% 0% 0% 130Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence01/31/18 15% 0% 0% 0% 0% 0% 85% 0% 0% 0% 0% 78Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence06/21/19 3% 10% 7% 0% 0% 0% 80% 0% 0% 0% 0% 230Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence 02/15/18 & 06/03/19100%0%0%0%0%0%0%0%0%0%0% 27Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence02/06/18 14% 0% 14% 0% 0% 0% 71% 0% 0% 0% 0% 590TR0795Page 15 of 20December 2019
TABLE E-1PFAS SIGNATURES FOR ON AND OFFSITE GROUNDWATER AND SURFACE WATER LOCATIONS Chemours Fayetteville Works, North CarolinaGeosyntec Consultants of NC P.C.PFAS SignatureArea MediaLocation IDSample DateHFPO-DAPFMOAAPFO2HxAPFO3OAPFO4DAPFO5DAPMPAPEPAPFESA-BP1PFESA-BP2PFECA-GTotal Table 3+ (ng/L)Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence06/19/19 8% 0% 6% 0% 0% 0% 86% 0% 0% 0% 0% 110Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/03/19 10% 0% 16% 0% 0% 0% 74% 0% 0% 0% 0% 46Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence09/22/17 & 12/13/17 90% 0% 0% 0% 0% 0% 10% 0% 0% 0% 0% 580Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/17/19 7% 10% 8% 0% 0% 0% 73% 0% 0% 2% 0% 140Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/23/19 6% 7% 5% 0% 0% 0% 80% 0% 0% 3% 0% 110Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/22/19 7% 0% 3% 0% 0% 0% 90% 0% 0% 0% 0% 83Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/23/19 6% 5% 0% 0% 0% 0% 89% 0% 0% 0% 0% 110Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/22/19 5% 10% 3% 0% 0% 0% 80% 0% 0% 2% 0% 110Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence01/30/18 13% 0% 3% 0% 0% 0% 78% 0% 0% 6% 0% 92Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/22/19 4% 10% 5% 0% 0% 0% 77% 0% 0% 4% 0% 76Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/22/19 0% 0% 8% 0% 0% 0% 92% 0% 0% 0% 0% 26Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence02/08/18 0% 10% 0% 0% 0% 0% 78% 0% 0% 12% 0% 53Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/22/19 0% 0% 7% 0% 0% 0% 93% 0% 0% 0% 0% 30Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/23/19 0% 0% 8% 0% 0% 0% 92% 0% 0% 0% 0% 52Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/22/19 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 12Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/22/19 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 25Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence07/03/19 18% 0% 0% 0% 0% 0% 82% 0% 0% 0% 0% 37Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence08/29/19 2% 0% 0% 0% 0% 0% 98% 0% 0% 0% 0% 110Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence 12/20/17 & 07/09/19100%0%0%0%0%0%0%0%0%0%0% 31Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence06/19/19 6% 0% 0% 0% 0% 0% 94% 0% 0% 0% 0% 160Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/21/19 5% 7% 0% 0% 0% 0% 86% 0% 0% 2% 0% 140Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence09/26/19 5% 4% 0% 0% 0% 0% 91% 0% 0% 0% 0% 210Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence08/21/19 8% 4% 2% 0% 0% 0% 87% 0% 0% 0% 0% 220Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence06/19/19 8% 0% 0% 0% 0% 0% 92% 0% 0% 0% 0% 140Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence07/10/19 14% 11% 5% 0% 0% 0% 68% 0% 0% 2% 0% 140Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence 01/31/18 & 11/20/18100%0%0%0%0%0%0%0%0%0%0% 220Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/22/19 6% 8% 4% 0% 0% 0% 82% 0% 0% 0% 0% 170Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/21/19 4% 9% 5% 0% 0% 0% 82% 0% 0% 0% 0% 170Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/23/19 3% 6% 0% 0% 0% 0% 91% 0% 0% 0% 0% 110Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/03/19 0% 18% 6% 0% 0% 0% 71% 0% 0% 6% 0% 51Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/07/19 6% 10% 6% 0% 0% 0% 77% 0% 0% 1% 0% 200Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/10/19 4% 6% 4% 0% 0% 0% 84% 0% 0% 1% 0% 210Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence08/19/19 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 32Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence02/02/18 25% 0% 0% 0% 0% 0% 75% 0% 0% 0% 0% 25Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence09/25/19 5% 12% 5% 0% 0% 0% 76% 0% 0% 3% 0% 69Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence09/25/19 5% 11% 8% 0% 0% 0% 74% 0% 0% 3% 0% 160Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence09/27/19 0% 6% 0% 0% 0% 0% 94% 0% 0% 0% 0% 130Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/03/19 12% 0% 0% 0% 0% 0% 88% 0% 0% 0% 0% 110Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence09/25/19 0% 11% 0% 0% 0% 0% 89% 0% 0% 0% 0% 110Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence09/26/19 0% 6% 2% 0% 0% 0% 92% 0% 0% 0% 0% 93Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence09/26/19 0% 0% 4% 0% 0% 0% 96% 0% 0% 0% 0% 77Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/03/19 8% 0% 0% 0% 0% 0% 92% 0% 0% 0% 0% 100Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence08/14/19 2% 9% 2% 0% 0% 0% 86% 0% 0% 1% 0% 160Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence09/25/19 1% 12% 7% 0% 0% 0% 79% 0% 0% 1% 0% 220Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/03/19 5% 7% 5% 0% 0% 0% 83% 0% 0% 0% 0% 160Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence01/24/18 100%0%0%0%0%0%0%0%0%0%0% 10Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence05/07/18 5% 7% 1% 0% 0% 0% 85% 0% 0% 1% 0% 210Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence07/05/19 6% 13% 7% 0% 0% 0% 74% 0% 0% 0% 0% 72Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/03/19 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 12Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/21/19 0% 20% 0% 0% 0% 0% 76% 0% 0% 4% 0% 89TR0795Page 16 of 20December 2019
TABLE E-1PFAS SIGNATURES FOR ON AND OFFSITE GROUNDWATER AND SURFACE WATER LOCATIONS Chemours Fayetteville Works, North CarolinaGeosyntec Consultants of NC P.C.PFAS SignatureArea MediaLocation IDSample DateHFPO-DAPFMOAAPFO2HxAPFO3OAPFO4DAPFO5DAPMPAPEPAPFESA-BP1PFESA-BP2PFECA-GTotal Table 3+ (ng/L)Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence02/08/18 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 11Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence09/25/19 9% 5% 17% 0% 0% 0% 70% 0% 0% 0% 0% 170Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/02/19 4% 4% 14% 0% 0% 0% 78% 0% 0% 0% 0% 170Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/10/19 0% 0% 9% 0% 0% 0% 91% 0% 0% 0% 0% 35Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/21/19 5% 12% 0% 0% 0% 0% 81% 0% 0% 2% 0% 150Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence09/25/19 4% 5% 3% 0% 0% 0% 87% 0% 0% 0% 0% 160Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/21/19 0% 19% 0% 0% 0% 0% 76% 0% 0% 5% 0% 93Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence 06/21/19 & 06/24/190%0%0%0%0%0%100%0%0%0%0% 22Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/17/19 7% 7% 13% 0% 0% 0% 73% 0% 0% 0% 0% 69Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence06/21/19 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 12Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence06/21/19 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 16Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence11/29/17 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 14Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/17/19 8% 4% 2% 0% 0% 0% 86% 0% 0% 0% 0% 130Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence11/28/17 16% 0% 0% 0% 0% 0% 84% 0% 0% 0% 0% 250Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence07/15/19 0% 0% 33% 0% 0% 0% 67% 0% 0% 0% 0% 27Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/23/19 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 17Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence11/29/17 14% 6% 10% 0% 0% 0% 69% 0% 0% 0% 0% 79Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence12/20/17 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 19Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence12/04/17 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 17Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence11/29/17 12% 0% 0% 0% 0% 0% 88% 0% 0% 0% 0% 41Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence09/27/19 0% 0% 29% 0% 0% 0% 71% 0% 0% 0% 0% 18Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence08/22/19 10% 0% 17% 0% 0% 0% 73% 0% 0% 0% 0% 30Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/04/19 10% 5% 4% 0% 0% 0% 82% 0% 0% 0% 0% 130Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence11/29/17 100%0%0%0%0%0%0%0%0%0%0% 16Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence 10/24/17 & 06/26/19100%0%0%0%0%0%0%0%0%0%0% 3.6Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence 10/24/17 & 02/13/18100%0%0%0%0%0%0%0%0%0%0% 1.9Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence 10/25/17 & 02/13/18100%0%0%0%0%0%0%0%0%0%0% 1.9Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/01/19 7% 0% 6% 0% 0% 0% 87% 0% 0% 0% 0% 42Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/01/19 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 23Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/22/19 4% 0% 0% 0% 0% 0% 96% 0% 0% 0% 0% 83Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/17/19 6% 0% 7% 0% 0% 0% 78% 0% 0% 9% 0% 42Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/19/17 0% 0% 17% 0% 0% 0% 83% 0% 0% 0% 0% 16Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence 12/13/17 & 11/21/18100%0%0%0%0%0%0%0%0%0%0% 1,300Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/18/19 10% 9% 5% 0% 0% 0% 71% 0% 0% 5% 0% 110Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/18/19 15% 7% 6% 0% 0% 0% 71% 0% 0% 1% 0% 240Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/18/19 13% 10% 7% 0% 0% 0% 68% 0% 0% 2% 0% 130Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/18/19 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 24Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/18/19 4% 14% 4% 0% 0% 0% 78% 0% 0% 0% 0% 96Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/18/19 9% 10% 0% 0% 0% 0% 81% 0% 0% 0% 0% 58Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/18/19 0% 14% 10% 0% 0% 0% 77% 0% 0% 0% 0% 63Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/18/19 7% 12% 11% 0% 0% 0% 70% 0% 0% 0% 0% 54Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/03/19 7% 14% 8% 0% 0% 0% 71% 0% 0% 0% 0% 48Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence02/14/18 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 12Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence01/24/18 6% 8% 12% 0% 0% 0% 73% 0% 0% 0% 0% 790Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence06/21/19 8% 0% 2% 0% 0% 0% 90% 0% 0% 0% 0% 110Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence02/01/18 6% 10% 7% 0% 0% 0% 75% 0% 0% 2% 0% 190Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence07/19/19 10% 9% 7% 0% 0% 0% 74% 0% 0% 0% 0% 180Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/02/19 5% 9% 14% 0% 0% 0% 72% 0% 0% 0% 0% 74Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence02/01/18 27% 0% 0% 0% 0% 0% 73% 0% 0% 0% 0% 23Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence07/18/19 6% 14% 7% 0% 0% 0% 73% 0% 0% 0% 0% 300TR0795Page 17 of 20December 2019
TABLE E-1PFAS SIGNATURES FOR ON AND OFFSITE GROUNDWATER AND SURFACE WATER LOCATIONS Chemours Fayetteville Works, North CarolinaGeosyntec Consultants of NC P.C.PFAS SignatureArea MediaLocation IDSample DateHFPO-DAPFMOAAPFO2HxAPFO3OAPFO4DAPFO5DAPMPAPEPAPFESA-BP1PFESA-BP2PFECA-GTotal Table 3+ (ng/L)Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence07/19/19 11% 9% 9% 0% 0% 0% 71% 0% 0% 0% 0% 91Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/17/19 0% 0% 20% 0% 0% 0% 80% 0% 0% 0% 0% 19Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence01/30/18 7% 0% 0% 0% 0% 0% 93% 0% 0% 0% 0% 160Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence09/15/17 100%0%0%0%0%0%0%0%0%0%0% 0.68Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/31/18 23% 0% 0% 0% 0% 0% 77% 0% 0% 0% 0% 43Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence09/19/19 5% 4% 0% 0% 0% 0% 86% 0% 0% 5% 0% 130Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence 02/12/18 & 07/25/19100%0%0%0%0%0%0%0%0%0%0% 21Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/13/17 15% 6% 7% 0% 0% 0% 72% 0% 0% 0% 0% 95Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence02/07/18 & 06/05/19 26% 0% 4% 0% 0% 0% 69% 0% 0% 0% 0% 49Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence 09/20/17 & 11/07/17100%0%0%0%0%0%0%0%0%0%0% 69Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/18/17 18% 0% 12% 0% 0% 0% 70% 0% 0% 0% 0% 36Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence09/20/17 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 15Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence01/24/18 100%0%0%0%0%0%0%0%0%0%0% 4.5Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/02/19 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 28Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/18/17 & 06/13/18 11% 8% 4% 0% 0% 0% 73% 0% 0% 5% 0% 150Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/26/17 9% 9% 3% 0% 0% 0% 79% 0% 0% 0% 0% 80Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence01/24/18 6% 7% 3% 0% 0% 0% 82% 0% 0% 2% 0% 160Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/17/17 7% 7% 3% 0% 0% 0% 83% 0% 0% 0% 0% 82Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence01/23/18 7% 7% 6% 0% 0% 0% 76% 0% 0% 4% 0% 250Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence09/25/19 3% 9% 4% 0% 0% 0% 80% 0% 0% 4% 0% 220Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence08/22/19 0% 14% 3% 0% 0% 0% 83% 0% 0% 0% 0% 150Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence08/19/19 0% 13% 6% 0% 0% 0% 79% 0% 0% 2% 0% 180Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence09/23/19 5% 9% 5% 0% 0% 0% 79% 0% 0% 2% 0% 140Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence08/06/19 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 5.8Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence01/22/18 9% 0% 0% 0% 0% 0% 91% 0% 0% 0% 0% 110Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence08/22/19 0% 14% 8% 0% 0% 0% 75% 0% 0% 4% 0% 150Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/03/19 7% 7% 5% 0% 0% 0% 78% 0% 0% 4% 0% 93Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence12/04/17 12% 0% 0% 0% 0% 0% 88% 0% 0% 0% 0% 33Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/09/19 15% 0% 4% 0% 0% 0% 74% 0% 0% 6% 0% 100Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence09/30/19 0% 22% 0% 0% 0% 0% 78% 0% 0% 0% 0% 68Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/19/17 14% 0% 0% 0% 0% 0% 86% 0% 0% 0% 0% 310Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/26/17 17% 10% 3% 0% 0% 0% 70% 0% 0% 0% 0% 65Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/17/17 20% 8% 0% 0% 0% 0% 73% 0% 0% 0% 0% 72Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence09/11/19 4% 8% 5% 0% 0% 0% 81% 0% 0% 3% 0% 110Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence07/22/19 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 27Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence 10/18/17 & 10/31/18100%0%0%0%0%0%0%0%0%0%0% 630Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence07/25/19 3% 9% 2% 0% 0% 0% 85% 0% 0% 1% 0% 120Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence07/25/19 3% 5% 0% 0% 0% 0% 92% 0% 0% 0% 0% 100Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence08/09/19 5% 5% 0% 0% 0% 0% 89% 0% 0% 1% 0% 100Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence07/23/19 5% 10% 10% 0% 0% 0% 71% 0% 0% 3% 0% 69Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/03/19 100%0%0%0%0%0%0%0%0%0%0% 2.8Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence07/23/19 8% 0% 8% 0% 0% 0% 84% 0% 0% 0% 0% 49Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence08/23/19 0% 0% 7% 0% 0% 0% 82% 0% 0% 11% 0% 39Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence07/23/19 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 22Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence07/22/19 8% 0% 7% 0% 0% 0% 84% 0% 0% 0% 0% 54Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence08/28/19 4% 11% 4% 0% 0% 0% 77% 0% 0% 3% 0% 61Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence07/24/19 10% 11% 7% 0% 0% 0% 70% 0% 0% 2% 0% 140Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence01/10/18 & 08/28/19 10% 0% 0% 0% 0% 0% 82% 0% 0% 8% 0% 50Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence01/10/18 & 09/04/19 0% 0% 19% 0% 0% 0% 70% 0% 0% 11% 0% 24Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence 12/13/17 & 11/20/18100%0%0%0%0%0%0%0%0%0%0% 370TR0795Page 18 of 20December 2019
TABLE E-1PFAS SIGNATURES FOR ON AND OFFSITE GROUNDWATER AND SURFACE WATER LOCATIONS Chemours Fayetteville Works, North CarolinaGeosyntec Consultants of NC P.C.PFAS SignatureArea MediaLocation IDSample DateHFPO-DAPFMOAAPFO2HxAPFO3OAPFO4DAPFO5DAPMPAPEPAPFESA-BP1PFESA-BP2PFECA-GTotal Table 3+ (ng/L)Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence07/03/19 14% 0% 13% 0% 0% 0% 73% 0% 0% 0% 0% 36Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/04/19 12% 4% 7% 0% 0% 0% 74% 0% 0% 2% 0% 160Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence07/11/19 0% 0% 21% 0% 0% 0% 79% 0% 0% 0% 0% 14Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence09/23/19 13% 0% 10% 0% 0% 0% 76% 0% 0% 0% 0% 60Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence07/03/19 0% 0% 5% 0% 0% 0% 95% 0% 0% 0% 0% 100Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence08/12/19 3% 4% 2% 0% 0% 0% 88% 0% 0% 3% 0% 140Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence07/11/19 3% 5% 8% 0% 0% 5% 76% 0% 0% 2% 1% 170Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence01/30/18 14% 0% 17% 0% 0% 0% 70% 0% 0% 0% 0% 450Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence 09/13/17 & 09/29/17100%0%0%0%0%0%0%0%0%0%0% 0.92Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/21/19 100%0%0%0%0%0%0%0%0%0%0% 9.9Aerial - Predominant PMPA or HFPO-DA Offsite Drinking WaterPrivate Residence10/02/19 0% 0% 35% 0% 0% 0% 65% 0% 0% 0% 0% 25Aerial - Predominant PMPA or HFPO-DA Offsite GroundwaterCUMBERLAND-1D 10/24/19 100%0%0%0%0%0%0%0%0%0%0% 5Aerial - Predominant PMPA or HFPO-DA Offsite GroundwaterCUMBERLAND-1S10/24/19 0% 0% 32% 0% 0% 0% 60% 0% 0% 9% 0% 27Aerial - Predominant PMPA or HFPO-DA Offsite GroundwaterROBESON-1D10/31/19 25% 0% 0% 0% 0% 0% 75% 0% 0% 0% 0% 15Combined Process Water - Predominant PFMOAA Onsite GroundwaterBCA-0107/08/19 9% 62% 20% 3% 0% 0% 5% 1% 0% 0% 0% 110,000Combined Process Water - Predominant PFMOAA Onsite GroundwaterBCA-0207/09/19 9% 63% 15% 5% 2% 0% 4% 1% 0% 0% 0% 190,000Combined Process Water - Predominant PFMOAA Onsite GroundwaterBCA-03R09/12/19 3% 71% 15% 3% 0% 0% 6% 2% 0% 0% 0% 460,000Combined Process Water - Predominant PFMOAA Onsite GroundwaterLTW-0207/17/19 13%50%21%4%0%0%9%3%0%0%0%75,000Combined Process Water - Predominant PFMOAA Onsite GroundwaterLTW-0507/16/19 7% 67% 19% 6% 1% 0% 0% 0% 0% 0% 0% 360,000Combined Process Water - Predominant PFMOAA Onsite GroundwaterPZ-2207/23/19 4% 76% 16% 2% 0% 0% 2% 0% 0% 0% 0% 240,000Combined Process Water - Predominant PFMOAA Onsite GroundwaterSMW-03B07/12/19 2% 74% 12% 2% 0% 0% 9% 2% 0% 0% 0% 620,000Combined Process Water - Predominant PFMOAA Onsite GroundwaterSMW-1207/11/19 18% 42% 14% 1% 0% 0% 20% 5% 0% 0% 0% 9,300Combined Process Water - Predominant PFMOAA Onsite GroundwaterLTW-0107/17/19 14% 34% 23% 5% 1% 0% 17% 6% 0% 0% 0% 130,000Combined Process Water - Predominant PFMOAA Onsite GroundwaterLTW-0307/17/19 6% 70% 16% 2% 0% 0% 4% 1% 0% 0% 0% 210,000Combined Process Water - Predominant PFMOAA Onsite GroundwaterLTW-0407/17/19 9% 55% 18% 3% 0% 0% 11% 4% 0% 0% 0% 180,000Combined Process Water - Predominant PFMOAA Onsite GroundwaterMW-1S06/28/19 22% 33% 17% 2% 2% 2% 15% 5% 0% 2% 0% 64,000Combined Process Water - Predominant PFMOAA Onsite GroundwaterMW-2407/17/19 2% 78% 14% 3% 1% 0% 1% 0% 0% 0% 0% 920,000Combined Process Water - Predominant PFMOAA Onsite GroundwaterMW-2706/25/19 3% 69% 18% 5% 1% 0% 2% 1% 0% 0% 0% 350,000Combined Process Water - Predominant PFMOAA Onsite GroundwaterMW-2S07/10/19 21% 34% 15% 3% 2% 3% 15% 5% 0% 3% 0% 82,000Combined Process Water - Predominant PFMOAA Onsite GroundwaterNAF-0206/27/19 4% 66% 18% 6% 2% 1% 2% 1% 1% 0% 0% 4,400,000Combined Process Water - Predominant PFMOAA Onsite GroundwaterNAF-0306/27/19 8% 41% 17% 6% 3% 3% 7% 4% 9% 1% 0% 640,000Combined Process Water - Predominant PFMOAA Onsite GroundwaterNAF-0607/11/19 6% 50% 19% 7% 4% 3% 3% 1% 5% 2% 0% 1,600,000Combined Process Water - Predominant PFMOAA Onsite GroundwaterNAF-0706/27/19 15% 39% 19% 6% 3% 2% 11% 4% 0% 1% 0% 240,000Combined Process Water - Predominant PFMOAA Onsite GroundwaterPZ-1107/16/19 20% 29% 20% 3% 3% 3% 14% 5% 2% 1% 0% 24,000Combined Process Water - Predominant PFMOAA Onsite GroundwaterPZ-1207/11/19 7% 62% 13% 3% 1% 0% 5% 1% 7% 1% 0% 100,000Combined Process Water - Predominant PFMOAA Onsite GroundwaterPZ-2706/25/19 5% 62% 14% 3% 2% 1% 7% 3% 0% 2% 0% 9,300Combined Process Water - Predominant PFMOAA Offsite Surface WaterCFR-0407/25/19 21% 54% 25% 0% 0% 0% 0% 0% 0% 0% 0% 16Combined Process Water - Predominant PFMOAA Offsite Surface WaterCFR-0707/25/19 13% 48% 17% 4% 0% 0% 17% 0% 0% 0% 0% 75Combined Process Water - Predominant PFMOAA Offsite Surface WaterCFR-0707/25/19 11% 43% 17% 4% 0% 0% 25% 0% 0% 0% 0% 49Combined Process Water - Predominant PFMOAA Offsite Surface WaterCFR-0707/25/19 20% 55% 25% 0% 0% 0% 0% 0% 0% 0% 0% 18Combined Process Water - Predominant PFMOAA Offsite Surface WaterCFR-0707/25/19 11% 51% 18% 5% 2% 0% 14% 0% 0% 0% 0% 140Combined Process Water - Predominant PFMOAA Offsite Surface WaterCFR-BLADEN05/22/19 12% 54% 17% 4% 1% 0% 13% 0% 0% 0% 0% 240Combined Process Water - Predominant PFMOAA Onsite Surface WaterOLDOF-102/01/19 4% 66% 17% 5% 1% 1% 4% 2% 0% 0% 0% 130,000Combined Process Water - Predominant PFMOAA Onsite Surface WaterOLDOF-202/01/19 5% 65% 17% 5% 1% 1% 5% 1% 0% 0% 0% 130,000Combined Process Water - Predominant PFMOAA Onsite Surface WaterOLDOF-2L02/02/19 4% 67% 16% 5% 1% 1% 4% 1% 0% 0% 0% 150,000Combined Process Water - Predominant PFMOAA Onsite Surface WaterOLDOF-302/02/19 3% 69% 16% 5% 1% 1% 4% 1% 0% 0% 0% 160,000Combined Process Water - Predominant PFMOAA Onsite Surface WaterOLDOF-402/02/19 3% 70% 15% 4% 1% 1% 4% 1% 0% 0% 0% 200,000Combined Process Water - Predominant PFMOAA Onsite Surface WaterOLDOF-502/02/19 3% 68% 15% 5% 2% 1% 3% 1% 2% 0% 0% 280,000Combined Process Water - Predominant PFMOAA Onsite Surface WaterOLDOF-5K02/02/19 15% 42% 15% 4% 4% 1% 13% 4% 0% 1% 0% 43,000Combined Process Water - Predominant PFMOAA Onsite Surface WaterSEEP-A-102/07/19 6% 38% 21% 7% 4% 4% 12% 4% 3% 1% 0% 160,000TR0795Page 19 of 20December 2019
TABLE E-1PFAS SIGNATURES FOR ON AND OFFSITE GROUNDWATER AND SURFACE WATER LOCATIONS Chemours Fayetteville Works, North CarolinaGeosyntec Consultants of NC P.C.PFAS SignatureArea MediaLocation IDSample DateHFPO-DAPFMOAAPFO2HxAPFO3OAPFO4DAPFO5DAPMPAPEPAPFESA-BP1PFESA-BP2PFECA-GTotal Table 3+ (ng/L)Combined Process Water - Predominant PFMOAA Onsite Surface WaterSEEP-A-202/07/19 14% 36% 19% 7% 4% 2% 10% 4% 2% 1% 0% 190,000Combined Process Water - Predominant PFMOAA Onsite Surface WaterSEEP-A-302/07/19 7% 40% 21% 8% 4% 3% 10% 4% 3% 1% 0% 170,000Combined Process Water - Predominant PFMOAA Onsite Surface WaterSEEP-A-402/07/19 13% 31% 20% 6% 3% 3% 17% 7% 1% 1% 0% 140,000Combined Process Water - Predominant PFMOAA Onsite Surface WaterSEEP-D-105/30/19 12% 56% 18% 5% 1% 0% 6% 2% 0% 0% 0% 160,000Combined Process Water - Predominant PFMOAA Offsite Surface WaterWC-102/07/19 17% 29% 18% 3% 0% 0% 26% 8% 0% 0% 0% 1,700Combined Process Water - Predominant PFMOAA Onsite GroundwaterMW-13D07/11/19 11% 54% 20% 5% 2% 0% 6% 2% 0% 1% 0% 330,000Combined Process Water - Predominant PFMOAA Onsite GroundwaterMW-14D07/11/19 4% 72% 14% 3% 1% 0% 3% 1% 0% 0% 0% 250,000Combined Process Water - Predominant PFMOAA Onsite GroundwaterMW-15DRR09/12/19 6% 55% 11% 2% 1% 0% 6% 2% 15% 2% 0% 57,000Combined Process Water - Predominant PFMOAA Onsite GroundwaterMW-20D07/09/19 8% 60% 14% 3% 1% 0% 12% 3% 0% 0% 0% 23,000Combined Process Water - Predominant PFMOAA Onsite GroundwaterSMW-04B07/12/19 19% 59% 10% 2% 1% 0% 7% 1% 0% 0% 0% 69,000Combined Process Water - Predominant PFMOAA Onsite GroundwaterSMW-05P07/25/19 6% 66% 13% 4% 1% 0% 8% 2% 0% 0% 0% 340,000Combined Process Water - Predominant PFMOAA Onsite GroundwaterSMW-08B07/16/19 3% 76% 14% 4% 1% 0% 2% 1% 0% 0% 0% 340,000Combined Process Water - Predominant PFMOAA Onsite GroundwaterPIW-10DR10/30/19 15% 46% 19% 6% 1% 0% 10% 4% 0% 0% 0% 100,000Combined Process Water - Predominant PFMOAA Onsite GroundwaterPIW-1D10/29/19 21% 31% 18% 3% 1% 0% 20% 6% 0% 0% 0% 46,000Combined Process Water - Predominant PFMOAA Onsite GroundwaterPIW-2D11/01/19 6% 75% 14% 1% 0% 0% 4% 0% 0% 0% 0% 25,000Combined Process Water - Predominant PFMOAA Onsite GroundwaterPIW-6S10/29/19 4% 76% 13% 2% 0% 0% 4% 1% 0% 0% 0% 250,000Combined Process Water - Predominant PFMOAA Onsite GroundwaterPIW-7D10/30/19 4% 80% 13% 1% 0% 0% 2% 0% 0% 0% 0% 210,000Combined Process Water - Predominant PFMOAA Onsite GroundwaterPIW-7S10/30/19 13%59%15%3%0%0%7%2%0%0%0%52,000Combined Process Water - Predominant PFMOAA Onsite GroundwaterPIW-8D10/30/19 10% 62% 17% 7% 1% 0% 2% 1% 0% 0% 0% 650,000Combined Process Water - Predominant PFMOAA Onsite GroundwaterPIW-9D10/23/19 7% 70% 14% 4% 1% 0% 3% 1% 0% 0% 0% 290,000Combined Process Water - Predominant PFMOAA Onsite GroundwaterPIW-9S10/23/19 4% 75% 14% 3% 1% 0% 3% 1% 0% 0% 0% 250,000Combined Process Water - Predominant PFMOAA Onsite GroundwaterPW-0110/18/19 15% 45% 20% 5% 2% 2% 7% 3% 1% 1% 0% 51,000Combined Process Water - Predominant PFMOAA Onsite GroundwaterPW-0211/04/19 6% 66% 16% 5% 2% 1% 3% 1% 0% 0% 0% 130,000Combined Process Water - Predominant PFMOAA Onsite GroundwaterPW-10R11/04/19 3% 81% 13% 1% 0% 0% 2% 0% 0% 0% 0% 180,000Combined Process Water - Predominant PFMOAA Onsite GroundwaterPW-1110/23/19 4% 68% 13% 6% 4% 0% 2% 1% 0% 0% 0% 280,000Combined Process Water - Predominant PFMOAA Onsite GroundwaterPW-1410/23/19 10% 55% 16% 5% 3% 2% 7% 2% 0% 1% 0% 170,000Combined Process Water - Predominant PFMOAA Onsite GroundwaterPW-15R11/06/19 2% 73% 12% 3% 0% 0% 8% 2% 0% 0% 0% 620,000Combined Process Water - Predominant PFMOAA Onsite Surface WaterSEEP-B-102/05/19 8% 51% 15% 3% 1% 0% 14% 6% 1% 0% 0% 290,000Combined Process Water - Predominant PFMOAA Onsite Surface WaterSEEP-C-102/05/19 8% 59% 19% 6% 1% 0% 5% 2% 0% 0% 0% 330,000Combined Process Water - Predominant PFMOAA Onsite Surface WaterSEEP-C-1-E202/05/19 7% 66% 16% 4% 1% 0% 5% 2% 0% 0% 0% 250,000Notes:ng/L - nanograms per literTable 3+ compounds reported as percentage of Total Table 3+ concentrations. TR0795Page 20 of 20December 2019