The URL can be used to link to this page

Home My WebLink About2019.12.31_CCO.p16_ChemoursCorrectiveActionPlan-AppendixA TR0795 December 2019 APPENDIX A On and Offsite Assessment Tables TR0795 TABLES TABLE A 2-1 SOIL AND GROUNDWATER ANALYTICAL METHODS - PFAS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. HFPO-DA* Hexafluoropropylene oxide dimer acid 13252-13-6 C6HF11O3 PFMOAA Perfluoro-2-methoxyaceticacid 674-13-5 C3HF5O3 PFO2HxA Perfluoro(3,5-dioxahexanoic) acid 39492-88-1 C4HF7O4 PFO3OA Perfluoro(3,5,7-trioxaoctanoic) acid 39492-89-2 C5HF9O5 PFO4DA Perfluoro(3,5,7,9-tetraoxadecanoic) acid 39492-90-5 C6HF11O6 PFO5DA Perfluoro-3,5,7,9,11-pentaoxadodecanoic acid 39492-91-6 C7HF13O7 PMPA Perfluoromethoxypropyl carboxylic acid 13140-29-9 C4HF7O3 PEPA Perfluoroethoxypropyl carboxylic acid 267239-61-2 C5HF9O3 PFESA-BP1 Byproduct 1 29311-67-9 C7HF13O5S PFESA-BP2 Byproduct 2 749836-20-2 C7H2F14O5S Byproduct 4 Byproduct 4 N/A C7H2F12O6S Byproduct 5 Byproduct 5 N/A C7H3F11O7S Byproduct 6 Byproduct 6 N/A C6H2F12O4S NVHOS Perfluoroethoxysulfonic acid 1132933-86-8 C4H2F8O4S EVE Acid Perfluoroethoxypropionic acid 69087-46-3 C8HF13O4 Hydro-EVE Acid Perfluoroethoxsypropanoic acid 773804-62-9 C8H2F14O4 R-EVE R-EVE N/A C8H2F12O5 PES Perfluoroethoxyethanesulfonic acid 113507-82-7 C4HF9O4S PFECA B Perfluoro-3,6-dioxaheptanoic acid 151772-58-6 C5HF9O4 PFECA-G Perfluoro-4-isopropoxybutanoic acid 801212-59-9 C12H9F9O3S 10:2 FTS 10:2-fluorotelomersulfonate acid 120226-60-0 C12H5F21O3 8:2 FTS 8:2 fluorotelomersulfonic acid 39108-34-4 C10H5F17O3S 4:2 FTS 4:2 fluorotelomersulfonic acid 757124-72-4 C6H5F9O3S NEtPFOSAE 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 1691-99-2 C8F17SO2N(C2H5)CH2CH2OH NMePFOSAE 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 24448-09-7 C8F17SO2N(CH3)CH2CH2OH 6:2 FTS 6:2 fluorotelomer sulfonate 27619-97-2 C8H5F13SO3 ADONA Ammonium 4,8-dioxa-3H-perfluorononanoate 958445-44-8 CF3O(CF2)3OCHFCF2COONH4 NaDONA Sodium 4,8-dioxa-3H-perfluorononanoate EVS1361 CF3O(CF2)3OCHFCF2COONa NEtFOSAA N-ethyl perfluorooctane sulfonamidoacetic acid 2991-50-6 C8F17SO2N(C2H5)CH2COOH NEtPFOSA N-ethylperfluoro-1-octanesulfonamide 4151-50-2 C8F17SO2NHCH2CH3 NMePFOSA N-methyl perfluoro-1-octanesulfonamide 31506-32-8 C8F17SO2NHCH3 NMeFOSAA N-methyl perfluorooctane sulfonamidoacetic acid 2355-31-9 C8F17SO2N(CH3)CH2COOH PFBS Perfluorobutane sulfonic acid 375-73-5 C4HF9SO PFBA Perfluorobutanoic acid 375-22-4 C4HF7O2 PFDS Perfluorodecane sulfonic acid 335-77-3 C10HF21O3S PFDA Perfluorodecanoic acid 335-76-2 C10HF19O2 PFDOS Perfluorododecane sulfonic acid 79780-39-5 C12HF25O3S PFDoA Perfluorododecanoic acid 307-55-1 C12HF23O2 PFHpS Perfluoroheptane sulfonic acid 375-92-8 C7HF15O3S PFHpA Perfluoroheptanoic acid 375-85-9 C7HF13O2 PFHxDA Perfluorohexadecanoic acid 67905-19-5 C16HF31O2 PFHxS Perfluorohexane sulfonic acid 355-46-4 C6HF13SO3 PFHxA Perfluorohexanoic acid 307-24-4 C6HF11O2 PFNS Perfluorononanesulfonic acid 68259-12-1 C9HF19O3S PFNA Perfluorononanoic acid 375-95-1 C9HF17O2 PFODA Perfluorooctadecanoic acid 16517-11-6 C18HF35O2 PFOSA Perfluorooctane sulfonamide 754-91-6 C8H2F17NO2S PFPeS Perfluoropentane sulfonic acid 2706-91-4 C5HF11O3S PFPeA Perfluoropentanoic acid 2706-90-3 C5HF9O2 PFTeA Perfluorotetradecanoic acid 376-06-7 C14HF27O2 PFTriA Perfluorotridecanoic acid 72629-94-8 C13HF25O2 PFUnA Perfluoroundecanoic acid 2058-94-8 C11HF21O2 PFOA Perfluorooctanoic acid 335-67-1 C8HF15O PFOS Perfluorooctane sulfonic acid 1763-23-1 C8HF17SO3 F-53B Major F-53B Major 73606-19-6 C8HClF16O4S F-53B Minor F-53B Minor 83329-89-9 C10HClF20O4S Notes: *Depending on the laboratory, HFPO-DA may also appear on the EPA Method 537 Mod analyte list EPA - Environmental Protection Agency PFAS - per- and polyfluoroalkyl substances SOP - Standard Operating Procedure EPA Method 537 Mod CASN Chemical Formula Table 3+ Lab SOP Analytical Method Common Name Chemical Name TR0795 Page 1 of 1 October 2019 TABLE A 4-1CLASSIFICATION OF TABLE 3+ PFASChemours Fayetteville Works, North CarolinaGeosyntec Consultants of NC P.C. aR-C=CaaR-CO2HbR-SO3HcPPF Acid Perfluoropropionic acid 422-64-0C3HF5O2Per 0 Linear ---- --MMFDifluoromalonic acid 1514-85-8C3H2F2O4Per 0 Linear ----DFSA Difluoro-sulfo-acetic acid 422-67-3C2H2F2O5SPer 0 Linear --  HFPO-DAHexafluoropropylene oxide dimer acid13252-13-6C6HF11O3Per 1 Branched ---- --PFECA-GPerfluoro-4-isopropoxybutanoicacid801212-59-9C7H1F13O1Per 1 Branched ---- --MTPPerfluoro-2-methoxypropanoicacid93449-21-9C4H4F4O3Poly 1 Linear ---- --Common Name Chemical NameCAS # FormulaDegree of FluorinationEther BondsIsomer typeFunctional GroupsDiproticdStructurePFAS without ether linkagesPer- and polyfluoroalkyl ether carboxylic acids (PFECAs)TR0795Page 1 of 4 October 2019 TABLE A 4-1CLASSIFICATION OF TABLE 3+ PFAS Chemours Fayetteville Works, North CarolinaGeosyntec Consultants of NC P.C. aR-C=CaaR-CO2HbR-SO3HcCommon Name Chemical NameCAS # FormulaDegree of FluorinationEther BondsIsomer typeFunctional GroupsDiproticdStructurePMPAPerfluoromethoxypropylcarboxylic acid13140-29-9C4HF7O3Per 1 Branched ---- --PEPAPerfluoroethoxypropylcarboxylic acid267239-61-2C5HF9O3Per 1 Branched ---- --PFMOAA Perfluoro-2-methoxyacetic acid 674-13-5C3HF5O3Per 1 Linear ---- --PFO2HxA Perfluoro(3,5-dioxahexanoic) acid 39492-88-1C4HF7O4Per 2 Linear ---- --PFECA BPerfluoro-3,6-dioxaheptanoicacid151772-58-6C5HF9O4Per 2 Linear ---- --PFO3OAPerfluoro(3,5,7-trioxaoctanoic)acid39492-89-2C5HF9O5Per 3 Linear ---- --PFO4DAPerfluoro(3,5,7,9-tetraoxadecanoic)acid39492-90-5C6HF11O6Per 4 Linear ---- --TR0795Page 2 of 4 October 2019 TABLE A 4-1CLASSIFICATION OF TABLE 3+ PFAS Chemours Fayetteville Works, North CarolinaGeosyntec Consultants of NC P.C. aR-C=CaaR-CO2HbR-SO3HcCommon Name Chemical NameCAS # FormulaDegree of FluorinationEther BondsIsomer typeFunctional GroupsDiproticdStructurePFO5DAPerfluoro-3,5,7,9,11-pentaoxadodecanoic acid39492-91-6C7HF13O7Per 5 Linear ---- --Hydro-EVEAcidPerfluoroethoxsypropanoicacid773804-62-9C8H2F14O4Poly 2 Branched ---- --EVE AcidPerfluoroethoxypropionicacid69087-46-3C8HF13O4Per 2 Branched -- --R-EVER-EVEN/AC8H2F12O5Per 1 Branched ----PESPerfluoroethoxyethanesulfonicacid113507-82-7C4HF9O4SPer 1 Linear -- ----NVHOSPerfluoroethoxysulfonicacid1132933-86-8C4H2F8O4SPoly 1 Linear -- ----Byproduct 6Byproduct 6N/AC6H2F12O4SPoly 1 Branched -- ----Per- and polyfluoroalkyl ether sulfonic acids (PFESAs)TR0795Page 3 of 4 October 2019 TABLE A 4-1CLASSIFICATION OF TABLE 3+ PFAS Chemours Fayetteville Works, North CarolinaGeosyntec Consultants of NC P.C. aR-C=CaaR-CO2HbR-SO3HcCommon Name Chemical NameCAS # FormulaDegree of FluorinationEther BondsIsomer typeFunctional GroupsDiproticdStructureByproduct 2Byproduct 2749836-20-2C7H2F14O5SPoly 2 Branched -- ----PFESA-BP1Byproduct 129311-67-9C7HF13O5SPer 2 Branched----Byproduct 4Byproduct 4N/AC7H2F12O6SPer 1 Branched --  Byproduct 5Byproduct 5N/AC7H3F11O7SPoly 2 Branched --  Notes:b Carboxylic acid functional groupc Sulfonic acid functional groupd Compound with two acid functional groupsPer- and polyfluoroalkyl ether sulfonic and carboxylic acids (PFES-CAs)a Carbon double bond functional groupTR0795Page 4 of 4 October 2019 TABLE A 5-1PUBLIC/ COMMUNITY WATER SUPPLY WELLS Chemours Fayetteville Works, North CarolinaGeosyntec Consultants of NC P.C.PWS IDLocation NameAddressCityLocation Description 1 Location Description 2Depth (feet)Distance from Site (miles)Usage0326127BROOKWOOD COMM WTR SYSTEM6902 SANDBRIDGE DRIVE FAYETTEVILLESHENANDOAH, JUSTIN CT- 5718 JUSTIN COURT AWAY FROM FENCE.OFFICE AT THE END OF BRYANSTONE WAY80 14.9Serves 15+ connections or regularly serves 25+ year-round residents. ex. cities, towns, subdivisions.0326341STONEY POINT WS/FAYETTEVILLE PWC-FAYETTEVILLE STONEY POINT & ROUSE DRSR 2986 OFF SR 111290 13.0Serves 15+ connections or regularly serves 25+ year-round residents. ex. cities, towns, subdivisions.5026009CRYSTAL SPRINGS CHAPEL 1400 CRYSTAL SPRINGS RD FAYETTEVILLE NEXT TO PARKING AREAON CRYSTAL SPRINGS ROAD APPROX 1/2MILES OIW CAMDEN ROAD30 12.5Serves 25+ people at least 60 days per year. ex. restaurants, churches, DOT rest areas.0326310RAINTREE MHP3580 STATE STFAYETTEVILLE BEHIND MHP@PLAYGOURNDOFF CAMDEN RD AT END OF STATE STREET100 12.1Serves 15+ connections or regularly serves 25+ year-round residents. ex. cities, towns, subdivisions.0326143COPELAND ACRES S/D 583 REILLY RDFAYETTEVILLE OFF CRAMER IN POWER LINE EASEMENTCAMDEN ROAD & ORION DRIVE - 1 MI EAST OF HOPE MILLS ROAD75 12.1Serves 15+ connections or regularly serves 25+ year-round residents. ex. cities, towns, subdivisions.0326428MACEDONIA BAPTIST CHURCH5064 MACEDONIA CHURCH RD FAYETTEVILLE IN FRONT OF OLD FELLOWSHIP HALLSR2013 .4MI N OIW NC210 - 5064 MACEDONIA CHURCH RD-11.9Serves 25+ people at least 60 days per year. ex. restaurants, churches, DOT rest areas.0326924KINGDOM HALL (SR-2008) JUDSON CHURCH ROAD FAYETTEVILLE @ NW CORNER OF CH IN REAR, BELOW GRADE SR2008 0.6MI NE OIW NC53L BEHIND JUDSON CH RD -11.8Serves 25+ people at least 60 days per year. ex. restaurants, churches, DOT rest areas.0326548FANTASY LAKE5869 PERMASTONE DR HOPE MILLSAT EQUIPMENT SHED PAST LOCKED GATE, EAST SIDE OF LAKE@END OF PERMASTONE DRIVE OFF GOLFVIEW DR W OF HOPE MILLS323 11.5Serves 25+ people at least 60 days per year. ex. restaurants, churches, DOT rest areas.0326955STRICKLAND GROCERY NO 2 5205 NC HWY 210 SSTEDMANNEXT TO ROADAT THE Y OF NC210 & SR2018-11.5Serves 25+ people at least 60 days per year. ex. restaurants, churches, DOT rest areas.0326411CHURCH OF GOD OF PROPHECY5371 NC 210 SSTEDMANN SIDE OF CH NEXT TO REAR DOOR TOWARDS PARKING LOTNC 210- 0.1MI SE OIW SR2018-11.4Serves 25+ people at least 60 days per year. ex. restaurants, churches, DOT rest areas.5026029DOLLAR GENERRAL STORE #159842222 CEDAR CREEK RD FAYETTEVILLE FRONT RIGHT CORNER OF PARKING LOTN ON GREEN ST RT ON GROVE ST RT ON CEDAR CREEK RD33 11.4Serves 25+ people at least 60 days per year. ex. restaurants, churches, DOT rest areas.0326143COPELAND ACRES S/D 583 REILLY RDFAYETTEVILLE OFF BURGAW DRIVECAMDEN ROAD & ORION DRIVE - 1 MI EAST OF HOPE MILLS ROAD85 11.4Serves 15+ connections or regularly serves 25+ year-round residents. ex. cities, towns, subdivisions.5026017ST JUDE BAPTIST CHURCH 3600 ACORDIA LNHOPE MILLS BESIDE CHURCH NEAR PARKING AREAEND OF ACORDIA LN OFF LEGION RD91 11.2Serves 25+ people at least 60 days per year. ex. restaurants, churches, DOT rest areas.0326342TANGLEWOOD ESTATES S/D HWY 301FAYETTEVILLE BACK OF DEVELOPMENTHWY 301 PAST INTERSECTION WITH AIRPORT RD 75 11.0Serves 15+ connections or regularly serves 25+ year-round residents. ex. cities, towns, subdivisions.0326342TANGLEWOOD ESTATES S/D HWY 301FAYETTEVILLE FRONT OF DEVELOPMENT IN MH SALES LOTHWY 301 PAST INTERSECTION WITH AIRPORT RD 120 11.0Serves 15+ connections or regularly serves 25+ year-round residents. ex. cities, towns, subdivisions.0326796NC PRODUCTS OF FAYETTEVILLE3960 CEDAR CREEK ROAD FAYETTEVILLE BACK OF SITE/ NORTH SIDENC 53 0.3 MI S OIW NC210 R74 10.2Serves 25+ people at least 60 days per year. ex. restaurants, churches, DOT rest areas.5326406HERITAGE BIBLE FELLOWSHIP4519 CALICO STHOPE MILLS NORTH EAST CORNER OF LOTON CALICO ROAD 1/2 MILE OFF CAMDEN ROAD-9.9Serves 25+ people at least 60 days per year. ex. restaurants, churches, DOT rest areas.0326776THE ARC OF HOPE MILLS 4124 PEACAN DRIVEHOPE MILLS AT REAR OF REST HOMEON CAMERON RD APPX 1/2 MILE FROM HOPE MILL CITY LIMITS200 9.8Serves 15+ connections or regularly serves 25+ year-round residents. ex. cities, towns, subdivisions.0326302LAZY ACRES CAMPGROUND 821 LAZY ACRES STREET FAYETTEVILLE BEHIND OFFICE821 LAZY ACRES ST - OFF SR-2341 .3MI OIW SR-2219 699.7Serves 25+ people at least 60 days per year. ex. restaurants, churches, DOT rest areas.0326701VFW POST 6703928 DOC BENNETFAYETTEVILLE RD REAR OF VFW LOT SE CORNER2MI NO OIW NC 87 AND DOC BENNETTE RD NEAR AIRPORT659.7Serves 25+ people at least 60 days per year. ex. restaurants, churches, DOT rest areas.0326570MT CALVARY MISSIONARY BAPTIST3398 DOC BENNETT RD FAYETTEVILLE IN FRONT OF CHURCHON DOC BENNETT RD APPROX .1MI W OIW I-95 SOUTH --9.4Serves 25+ people at least 60 days per year. ex. restaurants, churches, DOT rest areas.0326516SHORT STOP #63-FAYETTEVILLE AT REAR OT STOREHWY 53 IOW TABOR CHURCH RD-9.1Serves 25+ people at least 60 days per year. ex. restaurants, churches, DOT rest areas.0326538CEDAR CREEK BAPTIST CHURCH4170 TABOR CHURCH ROAD FAYETTEVILLE NEXT TO BALL FIELD @OLD WELLON SR 2033 JUST OFF NC 53 INTER WITH THE CONVIENCE STORE - 4170 TABOR CHURCH RD455 9.0Serves 25+ people at least 60 days per year. ex. restaurants, churches, DOT rest areas.5326413FED EX FREIGHT-HOPE MILLS S OF BLDG NEXT TO FENCEON SERVICE RD OFF NC 301S SO OF HOPE MILLS EXIT NC 301-8.9Serves 25+ people at least 60 days per year. ex. restaurants, churches, DOT rest areas.0326864GREATER FIRST BAPTIST CHURCH3398 MCKINNON RDFAYETTEVILLE E OF CH NEXT TO DRIVEWAYOFF MCKINNIN RD 1/2 MILE FROM INTER WNC53 CEDAR CK COMM-8.8Serves 25+ people at least 60 days per year. ex. restaurants, churches, DOT rest areas.5026028NEW VISION CHRISTIAN CHURCH6111 MCDONALD RDPARKTONIN FORNT OF CHURCHON MCDONALD RD, APPX 1 MILE W ON US 301-8.7Serves 25+ people at least 60 days per year. ex. restaurants, churches, DOT rest areas.0326865GREGORY POOLE EQUIPMENT CO5663 US 301 SHOPE MILLS -1 MILE S OIW US 301 & CHICKEN FOOT ROAD788.7Serves 25+ people at least 60 days per year. ex. restaurants, churches, DOT rest areas.0378030SAINT PAULS, TOWN OF 110 WEST MCLEAN ST ST PAULSODOM RDWATER TREATMENT PLANT321 8.6Serves 15+ connections or regularly serves 25+ year-round residents. ex. cities, towns, subdivisions.0326687UNION OAK AME ZION CHURCH6142 HIGHWAY 301 SOUTH HOPE MILLS SOUTH OF CHURCH NEXT TO FIELDNEAR CO LINE ON NC 301-8.5Serves 25+ people at least 60 days per year. ex. restaurants, churches, DOT rest areas.0378030SAINT PAULS, TOWN OF 110 WEST MCLEAN ST ST PAULSWATER TREATMENT PLANT142 8.4Serves 15+ connections or regularly serves 25+ year-round residents. ex. cities, towns, subdivisions.0309040TAR HEEL WATER CORP -TAR HEELSR 2354 MAIN ST-0.2 M S OF ARMFIELDOFF HWY 87 IN TARHEEL135 8.3Serves 15+ connections or regularly serves 25+ year-round residents. ex. cities, towns, subdivisions.TR0795Page 1 of 3October 2019 TABLE A 5-1PUBLIC/ COMMUNITY WATER SUPPLY WELLS Chemours Fayetteville Works, North CarolinaGeosyntec Consultants of NC P.C.PWS IDLocation NameAddressCityLocation Description 1 Location Description 2Depth (feet)Distance from Site (miles)Usage0378030SAINT PAULS, TOWN OF 110 WEST MCLEAN ST ST PAULSCLARK STWATER TREATMENT PLANT340 8.1Serves 15+ connections or regularly serves 25+ year-round residents. ex. cities, towns, subdivisions.0326503MT PISGAH BAPTIST CHURCH 3350 BUTLER NURSERY RD FAYETTEVILLE IN FRONT OF CHURCH IN OLD BRICK PUMP HOUSE.3350 BUTLER NURSERY RD, NC 87S OF FAYETTEVILLE OVER RIVER RD TO RT FROM F-VILLE NC-7.9Serves 25+ people at least 60 days per year. ex. restaurants, churches, DOT rest areas.5078003MARSHLACK MHP #1 -PARKTONAT THE END OF SOUTHERN COMFORT DRAT SOUTHERN COMFORT AIR RANCH LITTLE MARSH RD OFF HWY 301 SOUTH. ROBESON/CUMBERLAND CO LINE100 7.8(State Def) 2+ systems that are adjacent, owned or operated by same supplier of water, and together serve 15+ connections or 25+ people.5078004MARSHLACK MHP #2ROBESON CUMBERLAND AND CO LINEPARKTONAT THE END OF SOUTHERN COMFORT DRAT SOUTHERN COMFORT AIR RANCH LITTLE MARSH RD OFF HWY 301 SOUTH SOUTH SLIGHTLY NORTH WEST OF PROPERT100 7.8(State Def) 2+ systems that are adjacent, owned or operated by same supplier of water, and together serve 15+ connections or 25+ people.0309040TAR HEEL WATER CORP -TAR HEELHWY 87 JUST NORTH OF SCHOOLOFF HWY 87 IN TARHEEL115 7.5Serves 15+ connections or regularly serves 25+ year-round residents. ex. cities, towns, subdivisions.0326572BAPTIST UNION MISSIONARY BAPTIST CHURCH1483 SAND HILL RDHOPE MILLS REAR OF CHURCH IN BRICK WELLHOUSEON SR2238 SANDHILL RD APPX .5MI E OIW SR2239 SANDHILL RD607.3Serves 25+ people at least 60 days per year. ex. restaurants, churches, DOT rest areas.0309523CAPE FEAR SCOUT RESERVATION13165 HWY 53 WESTWHITE OAK BEHIND RANGERS HOMEON NC 53 APPROX 2 MILE N OF WHITE OAK987.3Serves 25+ people at least 60 days per year. ex. restaurants, churches, DOT rest areas.0309527SMITHFIELD FARMLAND CORP-TAR HEEL DIV15855 NC 87 W - 9307TAR HEELEAST OF PLANTHWY 87 N OF TAR HEEL 1 M410 7.1Serves at least 25 of the same persons 6+ months per year. ex. schools, daycares, industries.0309527SMITHFIELD FARMLAND CORP-TAR HEEL DIV15855 NC 87 W - 9307TAR HEELAT REAR OF LAGOON BETWEEN W01 AND WO2 HWY 87 N OF TAR HEEL 1 M400 7.0Serves at least 25 of the same persons 6+ months per year. ex. schools, daycares, industries.0309527SMITHFIELD FARMLAND CORP-TAR HEEL DIV15855 NC 87 W - 9307TAR HEELSO OF PLANT BELOW LAGOONHWY 87 N OF TAR HEEL 1 M409 6.8Serves at least 25 of the same persons 6+ months per year. ex. schools, daycares, industries.0309527SMITHFIELD FARMLAND CORP-TAR HEEL DIV15855 NC 87 W - 9307TAR HEELIN FRONT OF PLANT NEAR HWY 87HWY 87 N OF TAR HEEL 1 M-6.8Serves at least 25 of the same persons 6+ months per year. ex. schools, daycares, industries.0326167GRAY`S CREEK MHP-FAYETTEVILLE BEHIND PUMMILL RESIDENCE87 SOUTH 1MILE FROM SR 2238706.5Serves 15+ connections or regularly serves 25+ year-round residents. ex. cities, towns, subdivisions.0326167GRAY`S CREEK MHP-FAYETTEVILLE AT FRONT BESIDE PRESSURE TANK87 SOUTH 1MILE FROM SR 2238636.5Serves 15+ connections or regularly serves 25+ year-round residents. ex. cities, towns, subdivisions.0326737SHERWOOD PRESBYTERIAN CHURCH4857 NC HWY 87 SOUTH FAYETTEVILLE FRONT OF CHURCHNC87 0.3 MI S - SR2220 L - 4857 NC 87 S-6.4Serves 25+ people at least 60 days per year. ex. restaurants, churches, DOT rest areas.0309527SMITHFIELD FARMLAND CORP-TAR HEEL DIV15855 NC 87 W - 9307TAR HEELBEHIND TRUCK SCALES, N SIDE OF PLANTHWY 87 N OF TAR HEEL 1 M410 6.4Serves at least 25 of the same persons 6+ months per year. ex. schools, daycares, industries.0378055ROBESON COUNTY WATER SYSTEM265 MCGIRT RDMAXTONHWY 20 0.5MI E OIW SR 1907SR1308 OFF HWY 71 AT CAMPBELL SOUP PLANT170 6.3Serves 15+ connections or regularly serves 25+ year-round residents. ex. cities, towns, subdivisions.0309527SMITHFIELD FARMLAND CORP-TAR HEEL DIV15855 NC 87 W - 9307TAR HEELBEHIND CAROLINA COLD STORAGE ABOUT 300 FT W OF OLD W5AHWY 87 N OF TAR HEEL 1 M405 6.1Serves at least 25 of the same persons 6+ months per year. ex. schools, daycares, industries.0326445TABOR UNITED METHODIST CHURCH6112 TABOR CHURCH ROAD FAYETTEVILLE FRONT OF CHURCH, TOWARDS ROAD; BELOW GRADE SR 2023 0.1 MI S OIW SR 2229-6.0Serves 25+ people at least 60 days per year. ex. restaurants, churches, DOT rest areas.0326853FIRST UNITED BAPT CH GRAYS CK2002 CHICKEN FOOT RD HOPE MILLS FRONT LEFT OF CHURCHHWY 59 1.5MI EAST OIW 301 SO ON RIGHT-6.0Serves 25+ people at least 60 days per year. ex. restaurants, churches, DOT rest areas.0309060BLADEN CO WTR DIST-EAST BLADEN-WHITE LAKE HWY 53 AT SR 1327US 701 NTH SR 1796 OFFICE-AGRICULTURE RD ELIZTOWN245 6.0Serves 15+ connections or regularly serves 25+ year-round residents. ex. cities, towns, subdivisions.0309527SMITHFIELD FARMLAND CORP-TAR HEEL DIV15855 NC 87 W - 9307TAR HEELWEST SIDE OF HWY 87 N OF PLANTHWY 87 N OF TAR HEEL 1 M380 5.7Serves at least 25 of the same persons 6+ months per year. ex. schools, daycares, industries.0326973MJ TAYLOR CATERING & PARADISE1965 JOHN MCMILLIAN RD HOPE MILLSBEHIND HOME OFFICE @DRIVEWAY, IN OLD PASTURE AREA3 MILES FROM I-95S JUST OFF CHICKEN FOOT RD ON SR 2242 JOHN MCMILLIAN RD90 5.6Serves 25+ people at least 60 days per year. ex. restaurants, churches, DOT rest areas.5009012BLADEN BLUFFS WATER SYSTEM17014 HWY 87TAR HEELINSIDE THE PERIMETER WHERE PLANT IS LOCATEDHWY 87S TO TAR HEEL. THE PLANT IS ON THE OPPOSITE SIDE OF SMITHFIELD PLANT-5.5Serves at least 25 of the same persons 6+ months per year. ex. schools, daycares, industries.0309527SMITHFIELD FARMLAND CORP-TAR HEEL DIV15855 NC 87 W - 9307TAR HEELEAST SIDE OF HWY 87 NORTH OF PLANTHWY 87 N OF TAR HEEL 1 M410 5.5Serves at least 25 of the same persons 6+ months per year. ex. schools, daycares, industries.0326682SAVANNAH BAPTIST CHURCH -FAYETTEVILLE FRONT OF CHURCH NEXT TO OLD WELLSR2023 1.3MIL S OIW SR2230 L-5.1Serves 25+ people at least 60 days per year. ex. restaurants, churches, DOT rest areas.0326536GRAYS CREEK BAPTIST CHURCH4750 GRAYS CREEK CHURCH RDHOPE MILLS FRONT OF CHURCH, NEXT TO PARKING AREANC HWY 875, LEFT ON BLOSSOM RD, RIGHT ON GRAYS CREEK CHURCH RD.- 4.8Serves 25+ people at least 60 days per year. ex. restaurants, churches, DOT rest areas.0326733CUMBERLAND UNION BAPTIST CH6957 TABOR CHURCH RD FAYETTEVILLE FRONT OF CH BELOW GROUNDSR2023 0.1 MI S OIW SR2228 L - 7096 TABOR CHURCH RD-4.7Serves 25+ people at least 60 days per year. ex. restaurants, churches, DOT rest areas.0378055ROBESON COUNTY WATER SYSTEM265 MCGIRT RDMAXTON4379NC20HWY(ACROSS FOR ROCCO)SR1308 OFF HWY 71 AT CAMPBELL SOUP PLANT146 4.4Serves 15+ connections or regularly serves 25+ year-round residents. ex. cities, towns, subdivisions.0378055ROBESON COUNTY WATER SYSTEM265 MCGIRT RDMAXTONHWY 20 BY RAILROAD TRACKSR1308 OFF HWY 71 AT CAMPBELL SOUP PLANT113 4.2Serves 15+ connections or regularly serves 25+ year-round residents. ex. cities, towns, subdivisions.TR0795Page 2 of 3October 2019 TABLE A 5-1PUBLIC/ COMMUNITY WATER SUPPLY WELLS Chemours Fayetteville Works, North CarolinaGeosyntec Consultants of NC P.C.PWS IDLocation NameAddressCityLocation Description 1 Location Description 2Depth (feet)Distance from Site (miles)Usage5026008GRAY`S CREEK CHURCH OF GOD4018 CHICKEN FOOT ROAD ST. PAULSNORTH SIDE OF CHURCHCHICKEN FOOT RD, APPX 5 MILES S. OF HOPE MILLS -4.1Serves 25+ people at least 60 days per year. ex. restaurants, churches, DOT rest areas.0378055ROBESON COUNTY WATER SYSTEM265 MCGIRT RDMAXTONNC 20 PECAN ORCHARDSR1308 OFF HWY 71 AT CAMPBELL SOUP PLANT106 4.1Serves 15+ connections or regularly serves 25+ year-round residents. ex. cities, towns, subdivisions.0326860SHORT TRIP3634 CHICKENFOOT RD HOPE MILLS NEAR OLD WELL #2, BEHIND PINE TREESON CHICKEN FOOT ROAD394.1Serves 25+ people at least 60 days per year. ex. restaurants, churches, DOT rest areas.0326810ALDERMAN ROAD ELEMENTARY2860 ALDERMAN RDFAYETTEVILLE WEST SIDE OF SCHOOLBETWEEN NC87 & SCHOOL RD804.0Serves at least 25 of the same persons 6+ months per year. ex. schools, daycares, industries.0378055ROBESON COUNTY WATER SYSTEM265 MCGIRT RDMAXTONNC 20 HAYFIELDSR1308 OFF HWY 71 AT CAMPBELL SOUP PLANT110 4.0Serves 15+ connections or regularly serves 25+ year-round residents. ex. cities, towns, subdivisions.0326627GRAYS CREEK ELEM SCHOOL GRAY`S CREEK SCHOOL ROAD HOPE MILLS RIGHT OF BLDG2964 SCHOOL RD844.0Serves at least 25 of the same persons 6+ months per year. ex. schools, daycares, industries.5009010MURPHY-BROWN SANITATION-TARHEEL1023 PURDE HALL RD TAR HEELBEHIND HYDRO TANK HOUSEOFF PURDE HALL RD S OF IO NC 20 AND PURDE HALL -3.9Serves 25+ people at least 60 days per year. ex. restaurants, churches, DOT rest areas.5009010MURPHY-BROWN SANITATION-TARHEEL1023 PURDE HALL RD TAR HEELNORTH OF WELL HOUSE EDGE OF SITEOFF PURDE HALL RD S OF IO NC 20 AND PURDE HALL -3.9Serves 25+ people at least 60 days per year. ex. restaurants, churches, DOT rest areas.0326974THE CREEK BAR & GRILL 4351 CHICKENFOOT RD ST PAULSREAR OF RESTAURANT NW CORNER6.6 MILES OFF I95 ON SR 2252 CHICKEN FOOT RD - 4351 CHICKENFOOT RD-3.9Serves 25+ people at least 60 days per year. ex. restaurants, churches, DOT rest areas.0326571MARVIN UNITED METHODIST CHURCH6740 NC 87 SOUTHFAYETTEVILLEE OF CHURCH NEXT TO DRIVEWAY TOWARDS HIGHWAYINTER OF NC 87 AND SR 1500 NEAR BALDEN CO. LINE -3.6Serves 25+ people at least 60 days per year. ex. restaurants, churches, DOT rest areas.0309055BLADEN CO WTR DIST-WEST BLADEN-272 SMITH CIRCLEELIZABETHTOWN SR 1300 1 MI NORTH NORTH OIW HWY 20WESTERN PART OF BLADEN CO983.0Serves 15+ connections or regularly serves 25+ year-round residents. ex. cities, towns, subdivisions.5026014CHARITY BAPTIST CHURCH 5923 SHILOAH CHURCH DRIVE FAYETTEVILLE IN FRONT OF CHURCHJUST OFF NC 87 SOUTH OF FAYETTEVILLE SHILOAH CH DR602.5Serves 25+ people at least 60 days per year. ex. restaurants, churches, DOT rest areas.0326569MT VERNON BAPTIST CHURCH3184 COUNTY LINE RD FAYETTEVILLE FRONT OF CHURCHON CO. LINE ROAD APPX 3 MILES FROM CHICKENFOOT ROAD - 3184 COUNTY LINE RD-2.2Serves 25+ people at least 60 days per year. ex. restaurants, churches, DOT rest areas.0326735WILLIS CREEK AME ZION CHURCH-FAYETTEVILLE WITHIN 3' OF WELL #1NC 87 SOUTH 4MI. OIW SR 2232-1.8Serves 25+ people at least 60 days per year. ex. restaurants, churches, DOT rest areas.Notes1. Information provided by North Carolina Corporate Geographic Database, retrieved from NC OneMap on September 24, 2019.2. Wells listed here correspond to public supply wells identified in Figure 5-1.'-' - No data availableTR0795Page 3 of 3October 2019 TABLE A 6-1SUMMARY OF FINDINGS OF GEOLOGIC MAPPING STUDY Chemours Fayetteville Works, North CarolinaGeosyntec Consultants NC P.C.Map ID Station ID Latitude LongitudeEstimated Elevation (ft NAVD 88)Unit Outcrop TypeThickness(ft)Major Lithology Minor LithologyStrike Dip TypeNotes1.1*320 4 Bedding1.2*219 56 Joint2.1*50 7 Bedding2.2*50 21 Bedding2.3*49 24 Bedding3.1*24 10 Bedding3.2*25 11 Bedding3.3*128 71 Joint4 4.1 34.84989 -78.8285086Surficial Aquifer Bench1gray blue sandstoneNA 351 20 BeddingBench of quartz-rich, poorly graded, angular clasts, medium- to coarse-grained sand.5 5.1 34.85442 -78.8414265Black Creek Confining UnitCreek bed1 gray/black clay NA NM NM NMDark gray, massive clay in creek bed.6 6.1 34.85444 -78.8416873Black Creek Confining UnitCreek bed1 gray/black clay NA NM NM NMDark gray, massive clay in creek bed.7 7.1 34.85437 -78.8421373Black Creek Confining UnitTree Root Ball ~10 gray/black clay NA NM NM NMOutcrop inaccessible but appears to be dark gray, massive clay in creek bed.8.1 8.1 34.85494 -78.8374859Black Creek Confining UnitCreek bed1 gray/black clay NA NM NM NMDark gray, massive clay in creek bed.8.2 8.2 34.85515 -78.8377955Black Creek Confining UnitCreek bedgray/black clay NA NM NM NMDark gray, massive clay in creek bed.9 9.1 34.83764 -78.83535120Perched Aquifer Stream Cut Wall 1sandclay 81 7 BeddingReddish tan, fine- to medium-grained sand with 1 foot thick interbedded dark gray clay layer.10 10.1 34.83678 -78.83484105Perched Clay Stream Cut Wall 4clayNA 52 5 BeddingDark gray, thinly bedded clay with trace mica. First clay exposure since last station.11 11.1 34.83559 -78.8335090Perched Clay Stream Cut Wall 1.5clayNA 42 7 BeddingLight gray (top 6 inches) and dark gray, fat clay. Lithology is similar to station 10.1 and 11.1. gray/black clay lignite chips Ledge of dark gray, moderately plastic clay with lignite chips. No other outcrops were observed downstream.Ledge of fat gray clay with local orange discoloration and trace mica. Bedding is locally massive. Contact of sand observed above clay across creek.334.85151 -78.8293776Black Creek Confining UnitLedge w/ Waterfall 7 gray/black clay NALedge/waterfall outcrop of tan, thinly bedded sand observed above dark gray clay. Local surficial weathering. Ledge3 gray/black clay NALedge4234.85152 -78.8293677Black Creek Confining Unit134.85156 -78.8293177Black Creek Confining UnitTR0795Page 1 of 4October 2019 TABLE A 6-1SUMMARY OF FINDINGS OF GEOLOGIC MAPPING STUDY Chemours Fayetteville Works, North CarolinaGeosyntec Consultants NC P.C.Map ID Station ID Latitude LongitudeEstimated Elevation (ft NAVD 88)Unit Outcrop TypeThickness(ft)Major Lithology Minor LithologyStrike Dip TypeNotes12 12.1 34.83540 -78.8332189Perched Clay Stream Cut Wall 3.25clayNA8 8 BeddingLight gray (top 6 inches) and dark gray, fat clay. Lithology is similar to station 10.1. 13 13.1 34.83465 -78.8326698Surficial Aquifer Stream Cut Wall 6.5 silty clay NA0 0 BeddingDark gray clay with silt component. Top 6 inches of outcrop is highly oxidized. Burrows observed.14.1**5 organic rich silt NA0 0 Bedding Dark black, lignite-rich silt with trace clay.14.2**1.5 claystone NA NM NM NMInterlayered dark and light gray clay. Station was observed across stream from station 14.1, approximately 15 to 20 feet below elevation of 14.1. 15 15.1 34.83339 -78.8307577Surficial Aquifer Stream Cut Wall 4sandclay NM NM NMWhite, poorly graded sand with cm- to mm-scale interlayers of black clay.16 16.1 34.83320 -78.8305881Black Creek Confining UnitStream Cut Wall 7claysand 19 7 BeddingFat dark gray clay with mm- to cm-scale interlayers of sand. First large exposure of clay since 12.1 and 13.1. Appears to begin approximately 30 feet upstream of this station.17.1*0 0 Bedding17.2*7 85 Joint18 18.1 34.83301 -78.8295181Black Creek Confining UnitStream Cut Wall 10clayNA0 0 BeddingLight and dark gray, thinly bedded clay with local surficial staining.19 19.1 34.83316 -78.8291181Black Creek Confining UnitStream Cut Wall 2clayNA0 0 BeddingDark gray, thinly bedded clay.20 20.1 34.83264 -78.8260367Black Creek Confining UnitStream Cut Wallgray clay NA NM NM NMUnable to access outcrop but appears to be dark gray, fat clay.21 21.1 34.83292 -78.8262669Black Creek Confining UnitStream Cut Walllight gray clay NA0 0 BeddingGray, fat clay and interbedded sand with trace mica and lignite chips. Pieces of petrified wood observed upstream. 22 22.1 34.83335 -78.8274973Black Creek Confining UnitStream Cut Walllight gray clay NA0 0 BeddingLight gray clay and interbedded fine-grained, angular sand with abundant lignite chips.23.1*0 0 Bedding23.2*37 82 Joint23.3*320 89 Joint17clayNADark gray, thinly bedded to massive clay with local oxidized surficial staining.Stream Cut WallStream Cut Wall15-20light to dark gray clayNALight to dark gray clay. Appears to be continuous from station 23.1. Multiple joint sets observed that show surficial weathering and horizontal bedding.23 34.83355 -78.8285473Black Creek Confining UnitStream Cut Wall1734.83308 -78.8301482Black Creek Confining Unit1434.83402 -78.8317678Surficial AquiferTR0795Page 2 of 4October 2019 TABLE A 6-1SUMMARY OF FINDINGS OF GEOLOGIC MAPPING STUDY Chemours Fayetteville Works, North CarolinaGeosyntec Consultants NC P.C.Map ID Station ID Latitude LongitudeEstimated Elevation (ft NAVD 88)Unit Outcrop TypeThickness(ft)Major Lithology Minor LithologyStrike Dip TypeNotes24 24.1 34.83299 -78.8296382Black Creek Confining UnitStream Cut Walldark gray clay NA0 0 Bedding Dark clay and interbedded fine-grained sand.25 25.1 34.83689 -78.8246461Black Creek Confining UnitNR2clayNA 239 11 BeddingDark gray, thinly bedded clay. Identified as Seep D-D1 in Seep Investigation.26 26.1 34.84158 -78.8285499Perched Clay Waterfall2clayNA 210 10 BeddingDark gray with orange surficial staining, thinly bedded to massive clay. First observed outcrop of clay in seep B.27 27.1 34.84175 -78.8272081Black Creek Confining UnitLedge2.5clayNA NM NM NMGray, massive, fat clay. Large petrified boulder observed. 28.1*238 19 Bedding28.2*115 23 Bedding28.3*265 87 Joint29 29.1 34.84415 -78.8267567Black Creek Confining UnitNR2clayNA 224 9 BeddingDark gray, massive, lean clay, with iron-oxide surficial staining and small 1cm-scale interbedded sand laminations. First exposure observed on seep A. Seep A-6, A-130 30.1 34.84442 -78.82971147Perched Aquifer NRunconsolidated sandclay NM NM NMTan brown, fine- to medium-grained, unconsolidated sand. Identified as Seep A-7-B1 in Seep Investigation. 31 31.1 34.84424 -78.8268368Black Creek Confining UnitNR1NA0 0 BeddingDark gray clay with horizontal bedding. Identified as Seep A8 in Seep Investigation.32 32.1 34.84505 -78.8279499Surficial Aquifer NR1 clayey sand NA NM NM NMRed-brown, massive clayey sand with nodules of claystone and siltstone in dry creek bed.33 33.1 34.84519 -78.82806103Surficial Aquifer NR4sandNA NM NM NMRed-brown, moist, fine- to coarse-grained sand with gravel sized quartz grains. Identified as Seep A-10.34 34.1 34.84543 -78.82876125Perched ClayNR2-3clay NA 87 8 BeddingRed-brown and orange, moist clay with interlayers of medium-grained sand.35 35.1 34.84575 -78.82959136Perched ClayNR1claysand 269 8Reddish gray, clay overlying orange, medium- to coarse grained, hematite-rich sand and interbedded clay. 36 36.1 34.84860 -78.8279062Black Creek Confining UnitNR4 petrified wood NA NM NM NM4 foot in diameter, petrified tree trunk and dark red to gray, massive fat clay. Identified as Seep A-5.2834.84184 -78.8266575Black Creek Confining UnitWaterfall10clayNAWaterfall outcrop of dark gray, thinly bedded clay and interbedded fine-grained sand.TR0795Page 3 of 4October 2019 TABLE A 6-1SUMMARY OF FINDINGS OF GEOLOGIC MAPPING STUDY Chemours Fayetteville Works, North CarolinaGeosyntec Consultants NC P.C.Map ID Station ID Latitude LongitudeEstimated Elevation (ft NAVD 88)Unit Outcrop TypeThickness(ft)Major Lithology Minor LithologyStrike Dip TypeNotes37 37.1 34.84860 -78.8279965Black Creek Confining UnitNR0.5clayNA NM NM NMDark red to gray, massive, fat clay.38 38.1 32.84858 -78.8281972Black Creek Confining UnitNR6-7clayNA NM NM NMDark to light gray, intricately layer/interbedded clay and fine- to medium-grained sand.39 39.1 34.85524 -78.8365253Black Creek Confining UnitNR10clayNA 352 46 JointLight to dark gray clay with cm-scale, fine-grained sand lenses throughout with local lignite layers. Outcrop is approximately 100 feet in length.40 40.1 34.85582 -78.8362454Black Creek Confining UnitNR3.5clayNA0 0 BeddingLight to dark gray clay with cm-scale, fine-grained sand lenses throughout with local lignite layers. Outcrop is approximately 70 feet in length.41 41.1 34.85572 -78.8362453Black Creek Confining UnitNR10clayNA0 0Light to dark gray clay with cm-scale, fine-grained sand lenses throughout with local lignite layers. Outcrop is approximately 50 feet in length.Notes:1. * indicates multiple station ID's at the same outcrop.2. ** indicates station locations at different outcrops but within the same vicinity.3. Latitude and longitude were measured by Parson's field staff using Arc Collector in conjuction with the Garmin Glow GPS.4. Elevations were estimated from 2018 USGS topographic map.5. ft above MSL - feet above mean sea level.6. Strikes and dips were measured using a Brunton compass.7. Seep ID's are referenced from Geosyntec 2019, Seeps and Creeks Investigation Report. Chemours Fayetteville Works. 26 August 2019.8. Soil classification are based off of Unified Soil Classification Systemft - feetNAVD 88 - North American Vertical Datum of 1988 NA - not applicableNM - not measuredNR - not recordedTR0795Page 4 of 4October 2019 TABLE A 6-2BLACK CREEK AQUIFER HPT/EC AND SITE BORING LOCATIONS Chemours Fayetteville Works, North CarolinaGeosyntec Consultants of NC P.C.LocationNorthing(ft NAD83)Easting(ft NAD83)Ground Surface Elevation (ft NAVD88)Total depth (ft bgs)Location notesHP-1400,542.772,051,769.545345co-located with PIW-1 soil boringHP-2399,790.412,050,646.3714262co-located with BCA-01HP-3399,855.352,052,002.665136HP-4399,557.562,052,156.194933co-located with LTW-01HP-5399,072.612,052,255.154941HP-6398,840.962,052,354.264847co-located with LTW-02HP-7398,622.532,051,900.107613.5HP-8398,122.182,052,551.754939co-located with LTW-03, PIW-6 soil boringHP-9397,291.742,052,580.524847co-located with LTW-04HP-10396,797.172,052,590.104544co-located with PIW-7 soil boringHP-11396,461.162,052,738.024848co-located with LTW-05HP-12396,160.772,052,239.557755co-located with PIW-9DHP-13395,108.742,052,293.917452co-located with PIW-10 soil boringHP-14397,002.022,052,566.934645HP-15396,640.142,052,695.994548HP-16395,745.632,052,301.197050HP-17398,518.902,051,952.487238co-located with PIW-5S and PW-10HP-18398,293.082,052,261.924644HP-19397,889.292,052,569.275047HP-20398,154.532,052,324.274745HP-21398,820.852,052,095.974846HP-22398,965.012,052,327.945037HP-23399,254.492,052,205.625035HP-24399,707.382,052,092.325032co-located with PIW-3 soil boringHP-25400,010.142,051,444.059044HP-26400,478.432,051,814.365544HP-27399,929.022,051,252.789244co-located with PIW-2 soil boringHP-28399,842.952,050,933.4011842HP-29395,470.222,052,350.897045HP-30395,945.142,052,345.556943HP-32396,411.922,052,674.494445co-located with PIW-8 soil boringPIW-1 Soil Boring 400,540.612,051,792.5950.7842.5PIW-2 Soil Boring 399,922.752,051,317.6498.1679PIW-3 Soil Boring 399,711.752,052,088.8050.5130PIW-4 Soil Boring 398,817.362,052,102.8250.3740PIW-5 Soil Boring398,520.382,051,951.2672.6845PIW-6 Soil Boring 398,118.142,052,540.5749.8540PIW-7 Soil Boring 396,787.002,052,589.4945.8150PIW-8 Soil Boring 396,403.382,052,682.0245.9240PIW-9 Soil Boring 396,148.112,052,251.1076.8049PIW-10 Soil Boring395,104.672,052,297.0473.3259Notes:4. LIDAR estimated ground surface elevations underestimate surveyed ground surface elevations by 0.4 - 1.0 feet.ft bgs - feet below ground surfaceft - feetNAD 83 - North America Datum 1983NAVD 88 - North American Vertical Datum of 1988 1. Locations for HPT borings (HP-1 through HP-32) were not surveyed and are approximate. PIW-soil boring locations reported correspond to surveyed co-ordinates for a shallow well location where a shallow and a deepwell were co-located. PIW-well locations are provided in Table 5.2. Ground surface elevations for HPT borings are estimated from LIDAR ground surface elevations. LIDAR ground surface elevation from 20-Foot DEM Elevation Service collected by NC Floodplain Mapping Program and processed by NC DOT - GIS Unit.Service URL:https://services.nconemap.gov/secure/rest/services/Elevation/DEM20ft_DEM/ImageServer last accessed 6-19-2019 23:243. Ground surface elevations for PIW-soil borings correspond to surveyed co-ordinates for a shallow well location where a shallow and a deep well were co-located. PIW-well ground surface elevations are provided in Table 6-3.TR0795Page 1 of 1October 2019 TABLE A 6-3 WELL CONSTRUCTION DETAILS Chemours Fayetteville Works, North CarolinaGeosyntec Consultants NC P.C.Area Well IDNorthing(ft, NAD83)Easting (ft, NAD83)InstallationDateCasing ConstructionCasing Diameter(in)Well Casing Depth(ft)Screened Interval(ft)Filter Pack Interval(ft)Bentonite Seal Interval(ft)Grout Interval (ft)Ground Elevation (ft NAVD88)TOC Elevation(ft NAVD88)AquiferSampled BetweenJun 1, 2019 and Sept. 20, 2019?Onsite BCA-01399,780.06 2,050,662.2211/20/2017 PVC 2 101.0 91 to 101 88 to 101 83 to 88 0 to 83143.26 146.3 Black Creek Aquifer YesOnsite BCA-02396,242.32 2,051,062.2111/16/2017 PVC 2 102.0 92 to 102 89 to 102 84 to 89 0 to 84145.20 148.42 Black Creek Aquifer YesOnsite BCA-03R398,582.23 2,049,522.2211/7/2018 PVC 298.0 88 to 98 85.1 to 98 98 to 108 / 82.5 to 85.1 0 to 82.5148.15 150.82 Black Creek Aquifer YesOnsite BCA-04395,877.67 2,047,823.1111/28/2017 PVC 2 104.0 94 to 104 91 to 104 84 to 91 0 to 84147.07 150.24 Black Creek Aquifer YesOnsite FTA-01397,907.50 2,049,373.6111/14/2002 PVC 222.0 12.0-22.0 10.0-22.0 8.0-10.0 0.0-8.0147.20 150.63 Perched ZoneYesOnsite FTA-02397,786.43 2,049,206.2711/13/2002 PVC 2 12.0-22.0 11.5-21.5 9.5-21.5 7.5-21.5 0.0-7.5NM 150.28 Perched ZoneYesOnsite FTA-03397,767.09 2,049,313.8611/13/2002 PVC 222.0 12.0-22.0 10.0-22.0 8.0-10.0 0.0-8.0147.58 151.08 Perched ZoneYesOnsite INSITU-01401,658.20 2,046,077.3112/13/2005 PVC 3/4 17.0 7.0-17.0 7.0-17.0NA0.0-7.0115.99 118.2 Surficial AquiferYesOnsite INSITU-02 401,863.46 2,049,136.6212/13/2005 PVC 3/4 17.0 7.0-17.0 7.0-17.0NA0.0-7.0110.71 113.12 Surficial Aquifer--Onsite LTW-01399,566.17 2,052,149.951/16/2006 PVC 226.0 11.0-26.0 9.0-26.0 6.0-9.0 0.0-6.051.22 53.83 Floodplain Deposits YesOnsite LTW-02398,848.36 2,052,354.371/16/2006 PVC 238.0 28.0-38.0 25.8-38.0 23.5-25.8 0.0-23.550.03 52.48 Black Creek Aquifer YesOnsite LTW-03398,115.15 2,052,557.521/5/2006 PVC 230.0 15.0-30.0 13.0-30.0 11.0-13.0 0.0-11.050.33 52.91 Floodplain Deposits YesOnsite LTW-04397,280.24 2,052,583.6012/22/2005 PVC 227.0 12.0-27.0 9.5-27.0 7.5-9.5 0.0-7.549.34 51.86 Floodplain Deposits YesOnsite LTW-05396,430.68 2,052,738.0612/21/2005 PVC 244.0 29.0-44.0 27.0-44.0 25.0-27.0 0.0-25.049.29 52.01 Black Creek Aquifer YesOnsite MW-1S397,080.31 2,049,120.732/28/1972 Stainless Steel 432.3 21.0-24.0 NANANA149.13 149.93 Perched ZoneYesOnsite MW-2S396,934.75 2,049,321.852/30/72 Stainless Steel 429.3 19.0-23.0 NANANA149.70 149.91 Perched ZoneYesOnsite MW-7S397,444.52 2,049,809.737/21/1983 Stainless Steel 215.6NANANANANM 147.47 Perched ZoneYesOnsite MW-8S397,096.48 2,049,867.777/23/1983 Stainless Steel 214.9NANANANANM 146.48 Perched Zone--Onsite MW-9S396,760.16 2,049,734.3011/3/1983 PVC 222.5 17.5-22.5 15.0-22.5 14.0-15.0 0.0-14.0151.77 154.39 Perched ZoneYesOnsite MW-11396,544.40 2,049,051.065/31/2005 PVC 221.5 11.5-21.5 9.3-21.5 7.3-9.3 0.0-7.3145.44 148.53 Perched Zone--Onsite MW-12S397,253.60 2,049,273.8911/1/1983 PVC 222.5 17.5-22.5 15.5-22.5 14.5-15.5 0.0-14.5149.89 152.06 Perched ZoneYesOnsite MW-13D397,119.02 2,049,821.123/20/2013 PVC 267.0 57 to 67 54 to 67 50 to 54 0 to 50145.77 148.65 Surficial AquiferYesOnsite MW-14D396,974.49 2,049,074.563/21/2013 PVC 272.0 62 to 72 60 to 72 53.5 to 60 0 to 53.5146.48 149.73 Surficial AquiferYesOnsite MW-15DRR398,580.71 2,049,511.7511/8/2018 PVC 262.5 52.5 to 62.5 49 to 62.5 44 to 49 0 to 44148.05 150.92 Surficial AquiferYesOnsite MW-16D398,493.70 2,048,402.844/2/2013 PVC 282.0 72 to 82 69 to 82 82 to 87 / 65 to 69 0 to 65145.84 148.41 Surficial AquiferYesOnsite MW-17D398,401.74 2,047,366.504/3/2013 PVC 267.0 57 to 67 54 to 70 70 to 77 / 51 to 54 0 to 51145.80 146.117 Surficial AquiferYesOnsite MW-18D400,947.38 2,046,574.7211/17/2017 PVC 260.0 50 to 60 47 to 60 40 to 47 0 to 40 104.81 107.57 Surficial AquiferYesOnsite MW-19D401,151.33 2,048,272.9911/18/2017 PVC 256.0 46 to 56 43 to 56 38 to 43 0 to 38136.30 139.55 Surficial AquiferYesOnsite MW-20D400,791.28 2,048,733.9111/18/2017 PVC 275.0 65 to 75 62 to 73 58 to 62 0 to 58133.97 137.18 Surficial AquiferYesOnsite MW-21D399,501.70 2,047,074.9611/22/2017 PVC 282.0 72 to 82 68 to 82 62 to 68 0 to 62148.05 151.384 Surficial AquiferYesOnsite MW-22D398,518.18 2,048,362.6812/1/2017 PVC 672.0 52 to 72 49 to 72 43 to 49 0 to 49146.57 149.06 Surficial AquiferYesOnsite MW-23396,237.61 2,051,063.257/26/2018 PVC 214.5 9.5 to 14.5 7.5 14.5 4 to 7.5 0 to 4145.17 148.34 Perched ZoneYesOnsite MW-24397,303.94 2,048,767.697/26/2018 PVC 223.8 18.8 to 23.8 16 to 23.8 14 to 16 0 to 14147.11 150.31 Perched ZoneYesOnsite MW-25396,753.37 2,050,989.8210/23/2018 PVC 217.0 12 to 17 9 to 207 to 90 to 7145.00 147.59 Perched ZoneYesOnsite MW-26396,265.18 2,051,484.6710/22/2018 PVC 210.0 5 to 10 4 to 152 to 40 to 2144.90 147.7 Perched Zone--Onsite MW-27396,010.33 2,051,472.0010/22/2018 PVC 215.0 10 to 15 8 to 206 to 80 to 6144.39 146.83 Perched ZoneYesOnsite MW-28395,719.79 2,051,165.9310/22/2018 PVC 214.0 9 to 14 7 to 155 to 70 to 5141.52 144.7 Perched ZoneYesOnsite MW-30397,340.79 2,050,776.0910/23/2018 PVC 215.0 10 to 15 8 to 206 to 80 to 6144.95 147.67 Perched ZoneYesOnsite MW-31396,390.50 2,049,622.884/17/2019 PVC 222.0 17-22 14-1712-140-12145.48 147.699 Perched ZoneYesOnsite MW-32396,359.58 2,049,651.794/16/2019 PVC 218.5 13-18.5 10-18.58-100-8144.63 147.106 Perched ZoneYesOnsite MW-33396,337.51 2,049,678.564/16/2019 PVC 217.0 12-17 10-178-100-8144.28 146.82 Perched ZoneYesOnsite MW-34396,352.90 2,049,619.094/17/2019 PVC 222.0 17-22 14-2212-140-12145.17 147.972 Perched ZoneYesOnsite MW-35396,332.94 2,049,631.164/16/2019 PVC 219.0 14-19 12-1910-120-10145.03 147.541 Perched ZoneYesOnsite MW-36396,320.09 2,049,651.174/16/2019 PVC 217.0 12-17 10-178-100-8144.68 147.889 Perched ZoneYesOnsite NAF-01398,349.77 2,050,338.8112/5/2002 PVC 215.0 5.0-15.0 4.0-15.0 2.0-4.0 0.0-2.0146.61 149.66 Perched ZoneYesOnsite NAF-02398,662.80 2,050,640.8612/4/2002 Stainless Steel 215.0 5.0-15.0 4.0-15.0 2.0-4.0 0.0-2.0147.05 150.31 Perched ZoneYesTR0795Page 1 of 4October 2019 TABLE A 6-3 WELL CONSTRUCTION DETAILS Chemours Fayetteville Works, North CarolinaGeosyntec Consultants NC P.C.Area Well IDNorthing(ft, NAD83)Easting (ft, NAD83)InstallationDateCasing ConstructionCasing Diameter(in)Well Casing Depth(ft)Screened Interval(ft)Filter Pack Interval(ft)Bentonite Seal Interval(ft)Grout Interval (ft)Ground Elevation (ft NAVD88)TOC Elevation(ft NAVD88)AquiferSampled BetweenJun 1, 2019 and Sept. 20, 2019?Onsite NAF-03398,580.65 2,050,755.4312/4/2002 Stainless Steel 215.0 5.0-15.0 4.0-15.0 2.0-4.0 0.0-2.0147.38 150.44 Perched ZoneYesOnsite NAF-04398,447.00 2,050,718.9512/4/2002 Stainless Steel 215.0 5.0-15.0 4.0-15.0 2.0-4.0 0.0-2.0147.90 148.1 Perched ZoneYesOnsite NAF-05A 398,641.22 2,051,024.85 10/10/2005 Stainless Steel 2NANANANANANANA Perched Zone--Onsite NAF-05B 398,660.23 2,051,021.81 10/12/2005 Stainless Steel 2NANANANANANANA Surficial Aquifer--Onsite NAF-06398,809.66 2,050,911.915/26/2005 Stainless Steel 2 12.75 2.75-12.75 2.0-12.75 0.25-2.0 0.0-0.25143.17 146.43 Perched ZoneYesOnsite NAF-07398,899.33 2,050,616.50 5/20/2005 Stainless Steel 215.5 5.5-15.5 3.0-15.5 1.0-3.0 0.0-1.0 146.73 149.69 Perched ZoneYesOnsite NAF-08A398,097.99 2,050,886.62 6/1/2005 Stainless Steel 215.0 5.0-15.0 3.0-15.0 1.0-3.0 0.0-1.0 145.54 148.82 Perched ZoneYesOnsite NAF-08B398,095.64 2,050,879.94 6/1/2005 Stainless Steel 253.5 43.5-53.5 41.5-53.5 39.5-41.5 0.0-39.5 145.62 148.86 Surficial Aquifer--Onsite NAF-09397,711.09 2,050,806.52 5/19/2005 PVC 217.0 7.0-17.0 5.0-17.0 3.0-5.0 0.0-3.0 146.52 149.29 Perched ZoneYesOnsite NAF-10397,612.57 2,050,423.15 5/19/2005 PVC 2 18.25 8.25-18.25 6.25-18.25 4.25-6.25 0.0-4.25 146.94 150 Perched ZoneYesOnsite NAF-11A 398,909.29 2,050,999.92 6/3/2005 PVC 27.5 2.5-7.5 2.0-7.5 0.5-2.0 0.0-0.5 137.55 140.59 Perched Zone--Onsite NAF-11B 398,911.13 2,050,995.88 6/5/2005 PVC 243.5 33.5-43.5 31.5-43.5 26.5-31.5 0.0-26.5 137.55 140.74 Surficial Aquifer--Onsite NAF-12 398,270.56 2,050,777.49 3/28/2013 PVC 223 18 to 23 16.2 to 23 13.1 to 16.2 0 to 13.1 NA 145.932 Perched ZoneYesOnsite NAF-13 398,370.49 2,051,260.72 10/16/2018 PVC 216 11 to 16 8.5 to 20 5 to 8.5 0 to 5 149.64 152.29 Perched Zone--Onsite PIW-1D 400,547.77 2,051,801.42 7/2/2019 PVC 229.5 24.5 to 29.5 23 - 30 20 - 23 0 - 20 49.53 52.33 Surficial AquiferYesOnsite PIW-1S 400,540.61 2,051,792.59 6/28/2019 PVC 217.8 7.8 - 17.8 6 - 182 - 60 - 2 50.78 54.198 Floodplain Deposits--Onsite PIW-2D 399,922.75 2,051,317.64 8/15/2019 PVC 250 40 - 50 38 - 50 36 - 38 0 - 36 98.16 100.85 Black Creek Aquifer YesOnsite PIW-3D 399,711.75 2,052,088.80 7/2/2019 PVC 224 19 - 24 17 - 24.8 15 - 17 0 - 15 50.51 53.315 Black Creek Aquifer YesOnsite PIW-4D 398,817.36 2,052,102.82 7/1/2019 PVC 237.3 32.3 - 37.3 30 - 38 28 - 30 0 - 28 50.37 53.041 Black Creek Aquifer YesOnsite PIW-5S 398,520.38 2,051,951.26 7/9/2019 PVC 219.8 9.8 - 19.8 8 - 20.26 - 80 - 6 72.68 75.188 Surficial AquiferYesOnsite PIW-6S 398,118.14 2,052,540.57 6/28/2019 PVC 228 18 - 28 16 - 28.2 14 - 16 0 - 14 49.85 53.359 Floodplain Deposits YesOnsite PIW-7D 396,787.69 2,052,595.37 6/26/2019 PVC 234 29 - 34 26 - 34.2 22 - 26 0 - 22 45.78 48.597 Black Creek Aquifer YesOnsite PIW-7S 396,787.00 2,052,589.49 6/25/2019 PVC 2177 - 17 5.2 - 18 2.2 - 5.2 0 - 2.2 45.81 48.392 Floodplain Deposits YesOnsite PIW-8D 396,403.38 2,052,682.02 6/26/2019 PVC 240.5 35.5 - 45.5 32 - 40.5 29 - 32 0 - 29 45.92 48.518 Black Creek Aquifer YesOnsite PIW-9D 396,155.97 2,052,250.91 7/2/2019 PVC 245 40 - 45 38.1 - 49 35.5 - 38.1 0 - 35.5 76.75 79.529 Black Creek Aquifer YesOnsite PIW-9S 396,148.11 2,052,251.10 6/26/2019 PVC 229.8 24.8 - 29.8 23 - 30 19 - 23 0 - 19 76.80 79.532 Surficial AquiferYesOnsite PIW-10DR 395,093.99 2,052,297.30 8/16/2019 PVC 260.5 53 - 58 50.7 - 60.5 48 - 50.7 0 - 48 73.29 75.91 Black Creek Aquifer YesOnsite PIW-10S 395,104.67 2,052,297.04 6/25/2019 PVC 2177 - 17 5.3 - 17.3 3 - 5.30 - 3 73.30 76.451 Surficial AquiferYesOnsite PW-01 399,064.80 2,049,654.30 7/30/2019 PVC 221 11 - 21 9 - 217 - 90 - 7 146.63 149.547 Perched ZoneYesOnsite PW-02 399,779.06 2,050,649.47 7/30/2019 PVC 260 50 - 60 47.5 - 60 45.5 - 47.5 0 - 45.5 143.76 146.431 Surficial AquiferYesOnsite PW-03 397,339.81 2,050,765.32 7/23/2019 PVC 245 35 - 45 33 - 45 31 - 33 0 - 31 144.97 147.967 Surficial AquiferYesOnsite PW-04 394,659.55 2,050,940.66 7/24/2019 PVC 227 17 - 27 15 - 27 13 - 15 0 - 13 94.74 97.751 Surficial AquiferYesOnsite PW-05 395,873.10 2,047,812.93 7/26/2019 PVC 275 65 - 75 63 - 75 60.5 - 63 0 - 60.5 147.16 150.336 Surficial AquiferYesOnsite PW-06 392,868.00 2,045,288.77 7/29/2019 PVC 229 19 - 29 17 - 29 15 - 17 0 - 15 144.76 147.691 Surficial AquiferYesOnsite PW-07 390,847.71 2,049,258.26 7/24/2019 PVC 238 28 - 38 26 - 38 23.5 - 26 0 - 23.5 144.90 148.16 Surficial AquiferYesOnsite PW-09 401,997.39 2,048,980.54 8/12/2019 PVC 254 44 - 54 42 - 54 40 - 42 0 - 40 74.76 72.03 Black Creek Aquifer YesOnsite PW-10R 398,516.12 2,051,936.59 8/9/2019 PVC 267 57 - 67 55 - 67 52 - 55 0 - 52 73.28 75.9 Black Creek Aquifer YesOnsite PW-11 394,354.36 2,052,226.72 7/25/2019 PVC 264 53 - 63 51 - 64 49 - 51 0 - 49 70.19 73.263 Black Creek Aquifer YesOnsite PW-12 399,500.45 2,047,063.51 8/1/2019 PVC 2119 109 - 119 106 - 119 103 - 106 0 - 103 148.05 150.61 Black Creek Aquifer YesOnsite PW-13 397,584.26 2,048,029.18 8/23/2019 PVC 2130 120 - 130 118 - 130 115 - 118 0 - 115 146.52 149.36 Black Creek Aquifer YesOnsite PW-14 397,325.65 2,050,766.36 8/27/2019 PVC 2146 136 - 146 134 - 146 131 - 134 0 - 131 145.13 147.97 Black Creek Aquifer YesOnsite PW-15R 398,900.88 2,051,011.75 8/14/2019 PVC 2120 110 - 120 108 - 120 105 - 108 0 - 105 133.33 136.14 Black Creek Aquifer YesOnsite PZ-11 398,646.25 2,049,820.94 3/12/2004 PVC 3/42015-20 15-2012-15NA 148.48 151.03 Perched ZoneYesOnsite PZ-12 399,094.96 2,048,981.78 3/12/2004 PVC 3/4 20.1 15.1-20.1 15.1-20.1 12.1-15.1 NA 148.31 150.91 Perched ZoneYesOnsite PZ-13 397,708.07 2,050,991.73 3/17/2004 PVC 3/4 12.1 7.1-12.1 7.1-12.1 4.1-7.1NA 146.69 149.2 Perched ZoneYesOnsite PZ-14 397,589.92 2,050,618.27 3/11/2004 PVC 3/414 9.0-14.0 9.0-14.0 6.0-9.0NA 146.75 148.38 Perched ZoneYesTR0795Page 2 of 4October 2019 TABLE A 6-3 WELL CONSTRUCTION DETAILS Chemours Fayetteville Works, North CarolinaGeosyntec Consultants NC P.C.Area Well IDNorthing(ft, NAD83)Easting (ft, NAD83)InstallationDateCasing ConstructionCasing Diameter(in)Well Casing Depth(ft)Screened Interval(ft)Filter Pack Interval(ft)Bentonite Seal Interval(ft)Grout Interval (ft)Ground Elevation (ft NAVD88)TOC Elevation(ft NAVD88)AquiferSampled BetweenJun 1, 2019 and Sept. 20, 2019?Onsite PZ-15 396,805.09 2,050,112.02 3/11/2004 PVC 3/4 15.2 10.2-15.2 10.2-15.2 7.2-10.2 NA 146.50 148.79 Perched ZoneYesOnsite PZ-17 396,614.82 2,048,872.69 3/10/2004 PVC 3/4 26.1 21.1-26.1 21.1-26.1 18.1-21.1 NA 145.00 150.08 Perched Zone--Onsite PZ-19R 397,998.66 2,049,919.52 4/25/2019 PVC 22116-21 14-2110-140-10 147.62 150.046 Perched ZoneYesOnsite PZ-20R 398,185.81 2,049,784.60 4/25/2019 PVC 22015-20 12-208.5-12 0-8.5 148.15 151.29 Perched ZoneYesOnsite PZ-21R 398,445.16 2,049,883.13 4/29/2019 PVC 22217-22 13-229-130-9 147.77 150.674 Perched ZoneYesOnsite PZ-22 397,272.80 2,052,584.04 1/11/2006 PVC 3/446 36.0-46.0 34.0-46.0 32.0-34.0 0.0-32.0 49.03 51.81 Black Creek Aquifer YesOnsite PZ-24 396,117.94 2,050,744.07 10/18/2018 PVC 116 11 to 16 10 to 20 8 to 10 0 to 8 144.76 147.53 Perched ZoneYesOnsite PZ-25 396,753.94 2,050,991.05 10/18/2018 PVC 119 14 to 19 12.5 to 40 8 to 12.5 0 to 8 145.00 147.59 Perched Zone--Onsite PZ-26 396,059.78 2,050,382.35 10/18/2018 PVC 116 11 to 16 10 to 20 7 to 10 0 to 7 144.90 147.7 Perched ZoneYesOnsite PZ-27 395,922.11 2,050,376.76 10/19/2018 PVC 117 12 to 17 11 to 20 8 to 11 0 to 8 145.02 147.17 Perched ZoneYesOnsite PZ-28 396,304.55 2,049,933.79 10/18/2018 PVC 118 13 to 18 11 to 20 9 to 11 0 to 9 145.60 148.64 Perched ZoneYesOnsite PZ-29 396,371.49 2,049,768.94 10/18/2018 PVC 118 13 to 18 10.5 to 20 8.5 to 10.5 0 to 8.5 145.07 147.74 Perched ZoneYesOnsite PZ-31 396,428.73 2,049,594.36 4/23/2019 PVC 21914-19 12-198.5-12 0-8.5 144.91 147.999 Perched ZoneYesOnsite PZ-32 396,418.47 2,049,713.79 4/23/2019 PVC 21813-18 12.5-18 10-12.5 0-10 145.36 148.471 Perched ZoneYesOnsite PZ-33 396,308.92 2,049,707.66 4/15/2019 PVC 217.5 12.5-17.5 10-17.58-100-8 143.94 146.715 Perched ZoneYesOnsite PZ-34 396,292.05 2,049,595.04 4/15/2019 PVC 213.5 13.5-18.5 11-18.59-110-9 144.94 147.695 Perched ZoneYesOnsite PZ-35 398,232.64 2,050,020.49 4/29/2019 PVC 21813-18 11-188-110-8 147.91 150.43 Perched ZoneYesOnsite SMW-01 395,295.75 2,043,679.19 1/23/2003 PVC 215 5.0-15.0 4.0-15.0 2.0-4.0 0.0-2.0 NA 136.81 Surficial AquiferYesOnsite SMW-02 399,983.75 2,050,654.77 1/23/2003 PVC 220 5.0-20.0 4.0-20.0 2.0-4.0 0.0-2.0 144.74 147.93 Perched ZoneYesOnsite SMW-02B 399,983.48 2,050,660.48 10/6/2005 PVC 253 43.0-53.0 40.0-53.0 35.0-40.0 0.0-35.0 142.28 145.211 Surficial Aquifer--Onsite SMW-03 399,778.25 2,049,445.96 6/4/2005 Stainless Steel 220 10.0-20.0 8.0-20.0 6.0-8.0 0.0-6.0 148.43 151.094 Perched Zone--Onsite SMW-03B 399,785.75 2,049,421.54 4/4/2013 PVC 282 72 to 82 69 to 82 65.5 to 69 0 to 65.5 147.00 150.43 Black Creek Aquifer YesOnsite SMW-04A 399,668.71 2,048,387.57 6/4/2005 Stainless Steel 234.5 19.5-34.5 17.5-34.5 15.5-17.5 0.0-15.5 145.46 148.09 Perched Zone--Onsite SMW-04B 399,667.12 2,048,390.30 10/5/2005 PVC 253 43.0-53.0 41.0-53.0 34.0-41.0 0.0-34.0 145.18 148.372 Surficial AquiferYesOnsite SMW-05 399,334.07 2,048,557.33 10/10/2005 PVC 220 10.0-20.0 8.0-20.0 6.0-8.0 0.0-6.0 144.17 148.099 Perched Zone--Onsite SMW-05P 399,338.61 2,048,559.26 2/21/2006 PVC 3/460 45.0-60.0 43.0-60.0 41.0-43.0 0.0-41.0 146.06 149.32 Surficial AquiferYesOnsite SMW-06 399,172.35 2,048,759.48 10/10/2005 PVC 222 12.0-22.0 10.0-22.0 8.0-10.0 0.0-8.0 147.92 150.97 Perched Zone--Onsite SMW-06B 399,144.74 2,048,764.94 4/3/2013 PVC 268 58 to 68 54.5 to 68 68 to 72 / 51 to 54.5 0 to 51 146.86 150.32 Surficial Aquifer--Onsite SMW-07 398,932.91 2,048,611.16 10/10/2005 PVC 223 13.0-23.0 11.0-23.0 8.5-11.0 0.0-8.5 147.74 147.64 Perched ZoneYesOnsite SMW-08 399,064.97 2,048,468.78 10/11/2005 PVC 231 21.0-31.0 18.5-21.0 14.5-18.5 0.0-14.5 147.93 151.017 Perched Zone--Onsite SMW-08B 399,058.33 2,048,478.84 3/28/2013 PVC 268 58 to 68 56 to 68 52.5 to 56 0 to 52.5 146.75 148.81 Surficial AquiferYesOnsite SMW-09 401,076.89 2,050,017.41 4/8/2013 PVC 262 52 to 62 49.5 to 62 62 to 67 / 45 to 49.5 0 to 45 138.16 141.43 Surficial AquiferYesOnsite SMW-10 402,307.31 2,047,923.84 3/25/2013 PVC 249 39 to 49 36.5 to 49 33 to 36.5 0 to 33 73.09 76.26 Surficial AquiferYesOnsite SMW-11 401,996.15 2,048,975.38 3/26/2013 PVC 223 13 to 23 11 to 23 8 to 11 0 to 8 69.04 71.95 Surficial AquiferYesOnsite SMW-12 401,314.20 2,051,007.22 3/27/2013 PVC 298 88 to 98 86 to 98 83 to 86 0 to 83 113.723 118.22 Black Creek Aquifer YesOffsite Bladen-1S 387,516.28 2,050,234.78 8/14/2019 PVC 2 10.25 5 - 10 3 - 10.25 1 - 30 - 1 81.57 81.31 Surficial Aquifer--Offsite Bladen-1D 387,519.56 2,050,248.83 8/13/2019 PVC 2 47.25 37 - 47 34 - 47.25 32 - 34 0 - 32 81.72 81.52 Black Creek Aquifer YesOffsite Bladen-2S 368,818.78 2,042,884.35 8/16/2019 PVC 220.6 10 - 20 8 - 20.6 43,624 0 - 6 143.01 142.62 Surficial AquiferYesOffsite Bladen-2D 368,824.41 2,042,879.78 8/15/2019 PVC 2 75.25 70 - 75 67 - 75.25 66 - 67 0 - 66 143.11 142.85 Black Creek Aquifer YesOffsite Bladen-3S 396,859.62 2,059,014.36 8/20/2019 PVC 2 15.25 5 - 15 3 - 15.25 1 - 30 - 1 79.40 78.84 Surficial AquiferYesOffsite Bladen-3D 396,854.29 2,059,007.99 8/19/2019 PVC 244 33.75 - 43.75 32 - 44 29 - 32 0 - 29 79.59 79.09 Black Creek Aquifer YesOffsite Bladen-4S 363,260.51 2,087,638.88 8/21/2019 PVC 215 4.75 - 14.75 43,539.00 1.5 - 3 0 - 1.5 64.65 64.26 Surficial AquiferYesOffsite Bladen-4D 363,252.43 2,087,638.29 8/21/2019 PVC 252 46.75 - 51.75 44.5 - 51.75 41.5 - 44.5 0 - 41.5 64.67 64.23 Black Creek Aquifer YesOffsite Cumberland-1S 431,464.38 2,011,074.92 9/13/2019 PVC 225 15 - 25 13 - 25 11 - 13 0 - 13 179.70 179.41 Surficial AquiferYesOffsite Cumberland-1D 431,457.26 2,011,072.83 9/12/2019 PVC 250 40 - 50 38 - 50 36 - 38 0 - 36 179.58 179.18 Black Creek Aquifer YesOffsite Cumberland-2S 449,976.40 2,074,022.29 9/12/2019 PVC 2177 - 17 5 - 173 - 50 - 3 133.87 133.61 Surficial AquiferYesTR0795Page 3 of 4October 2019 TABLE A 6-3 WELL CONSTRUCTION DETAILS Chemours Fayetteville Works, North CarolinaGeosyntec Consultants NC P.C.Area Well IDNorthing(ft, NAD83)Easting (ft, NAD83)InstallationDateCasing ConstructionCasing Diameter(in)Well Casing Depth(ft)Screened Interval(ft)Filter Pack Interval(ft)Bentonite Seal Interval(ft)Grout Interval (ft)Ground Elevation (ft NAVD88)TOC Elevation(ft NAVD88)AquiferSampled BetweenJun 1, 2019 and Sept. 20, 2019?Offsite Cumberland-2D 449,984.84 2,074,020.57 9/12/2019 PVC 257 47 - 57 43 - 57 43 - 45 0 - 43 134.06 133.79 Black Creek Aquifer YesOffsite Cumberland-3S 423,251.95 2,060,414.73 9/12/2019 PVC 2149 - 14 7 - 145 - 70 - 5 83.87 83.62 Surficial AquiferYesOffsite Cumberland-3D 423,245.42 2,060,410.59 9/11/2019 PVC 227 22 - 27 20 - 27 18 - 20 0 - 18 83.59 83.34 Black Creek Aquifer YesOffsite Cumberland-4S 413,083.94 2,078,256.96 9/11/2019 PVC 220 10 - 20 8 - 206 - 80 - 6 124.15 123.93 Surficial AquiferYesOffsite Cumberland-4D 413,093.08 2,078,251.38 9/10/2019 PVC 267 57 - 67 55 - 67 53 - 55 0 - 53 124.09 123.79 Black Creek Aquifer YesOffsite Cumberland-5S 405,623.27 2,138,233.37 9/11/2019 PVC 224 14 - 24 12 - 24 10 - 12 0 - 10 107.00 106.65 Surficial AquiferYesOffsite Cumberland-5D 405,619.17 2,138,238.59 9/11/2019 PVC 257 52 - 57 49 - 57 47 - 49 0 - 49 107.02 106.67 Black Creek Aquifer YesOffsite Robeson-1S 381,405.51 2,020,158.29 9/9/2019 PVC 227 17 - 27 15 - 27 13 - 15 0 - 13 161.51 161.22 Surficial AquiferYesOffsite Robeson-1D 381,413.60 2,020,160.37 9/4/2019 PVC 253 42.75 - 52.75 41 - 53 39 - 41 0 - 39 161.23 160.93 Black Creek Aquifer YesNotes:1. Survey completed by Freeland-Clinkscales & Associates of NC.2. Northing and Easting provided in feet, State Plane Coordinates for North Carolina (zone 3200) in North American Datum of 1983.3. Ground surface and top of casing elevation reported in North American Vertical Datum of 1988.ft NAD83 - feet, State Plane Coordinate System North American Datum 1983ft NAVD88 - feet, North American Vertical Datum of 1988in - inchesft - feetft bgs - feet below ground surfaceNA - not availableNM - not measuredTR0795Page 4 of 4October 2019 TABLE A 6-4 SUMMARY OF ESTIMATED HYDRAULIC CONDUCTIVITY Chemours Fayetteville Works, North Carolina Geosyntec Consultants NC P.C. K (cm/s) K (ft/d)Wells Included 3.23 x 10-4 0.9 LTW-01 4, LTW-03 4 9.89 x 10-3 28.0 SMW-12, LTW-02, BCA-02, BCA-04, BCA-01 1.86 x 10-3 5.3 LTW-05 Notes: cm/s - centimeters per second ft/d - indicates feet per day K - hydraulic conductivity 2. Geometric means calculated from both pneumatic and manual slug test results. No method bias was observed. Pneumatic slug tests were performed only at locations where well screen was fully saturated. Manual slug tests were performed at all other well locations. 3. LTW-04 results not included in calculating geometric mean because initial displacement for all tests at this well suspected to display oscillatory response likely due to inertial effects from water table across well screen. 4. Initial displacement response curve suspected to display double-straight line effect due to drainage from filter pack. Analytical solutions are fit to the second- straight line displacement curve representing post-filter drainage, aquifer response. Hydrogeologic Zone Geometric Mean Hydraulic Conductivity, K Floodplain Deposits Black Creek Aquifer Partially Screened across Floodplain and Black Creek Aquifer 1. Detailed slug test results, AQTESOLV inputs, displacement time curves and AQTESOLV outputs used to summarize results are included in Appendix E. TR0795 Page 1 of 1 October 2019 TABLE A 6-5SURVEY OF TEMPERATURE DIFFERENTIALS IN CAPE FEAR RIVER Chemours Fayetteville Works, North CarolinaGeosyntec Consultants NC, P.C.Location Date Time of Readings X-coordinate (ft) Y-coordinate (ft) Water Depth (ft)6 Inches Above Sediment Surface (ºC)3 inches Above Sediment Surface (ºC)1 inch into Sediment Surface (ºC)Temperature Difference between Porewater and 6 inches Above Sediment Surface (ºC)Depth of Thalweg along Transect (ft)18/7/2019 854 2051927.95 400688.812428.4828.5 28.540.0625.2528/6/2019 16332051867.71 400672.672.2329.29 29.27 29.350.06NM38/9/2019 15082051864.40 400648.922.927.86 27.89280.14NM48/6/2019 16262051869.61 400603.983.8629.14 29.05 29.160.02NM58/7/2019 9052051941.74 400569.4922.7328.49 28.45 28.540.0525.2568/6/2019 16202051902.25 400479.863.1729.11 29.07 29.140.03NM78/7/2019 9132051981.06 400450.1820.9228.62 28.48 28.580.0421.6588/6/2019 16122051926.53 400382.755.3929.28 29.21 29.380.1NM98/7/2019 9342052053.27 400327.7124.2528.51 28.47 28.560.0524.35108/6/2019 16052051943.54 400270.551.7229.47 29.44 29.530.06NM118/7/2019 9572052010.65 400241.6522.328.56 28.53 28.620.06NM128/5/2019 15102052011.79 400163.918.528.78 28.73 28.820.04NM138/7/2019 10182052131.34 400119.7224.528.63 28.56 28.60.03NM148/5/2019 15222052069.26 400062.4811.528.8628.8 28.890.03NM158/7/2019 11392052126.57 399998.682328.81 28.63 28.790.0227.35168/5/2019 15312052117.71 399938.949.129.2529.2 29.270.02NM178/7/2019 11542052179.91 399886.9721.428.68 28.61 28.720.0426.35188/5/2019 15482052170.35 399811.832.429.26 29.24 29.410.15NM198/7/2019 12042052214.08 399811.7822.128.728.63 28.740.0426.35208/5/2019 16462052225.50 399737.2019.628.828.71 28.770.03NM218/7/2019 12112052256.29 399658.0522.928.828.74 28.810.0125.35228/5/2019 16532052243.48 399624.049.1329.0829.1 29.170.09NMTR0795Page 1 of 6October 2019 TABLE A 6-5SURVEY OF TEMPERATURE DIFFERENTIALS IN CAPE FEAR RIVER Chemours Fayetteville Works, North CarolinaGeosyntec Consultants NC, P.C.Location Date Time of Readings X-coordinate (ft) Y-coordinate (ft) Water Depth (ft)6 Inches Above Sediment Surface (ºC)3 inches Above Sediment Surface (ºC)1 inch into Sediment Surface (ºC)Temperature Difference between Porewater and 6 inches Above Sediment Surface (ºC)Depth of Thalweg along Transect (ft)238/7/2019 1222 2052276.72 399585.3120.428.77 28.72 28.780.0122.35248/6/2019 8212052276.14 399534.9113.7828.89 28.68 28.750.1422.35258/7/2019 12402052346.66 399454.9324.2228.76 28.68 28.770.0125.35268/6/2019 8282052334.43 399409.6012.1328.7328.728.80.07NM278/7/2019 12512052379.34 399359.1420.1528.81 28.75 28.820.0125.95288/6/2019 8352052381.06 399286.395.5728.74 28.72 28.780.04NM298/7/2019 13092052414.92 399258.4920.8628.76 28.72 28.810.0525.85308/6/2019 8412052405.69 399207.928.5328.81 28.76 28.840.03NM318/7/2019 13492052453.15 399143.0220.328.94 29.04 29.070.1325.35328/6/2019 8472052470.92 399026.469.1928.7328.7 28.790.06NM338/7/2019 14002052508.45 399016.9920.128.96 28.92 28.980.0222.95348/6/2019 8552052504.53 398929.0711.228.83 28.76 28.790.04NM358/7/2019 14212052532.25 398900.4920.228.93 28.89 28.970.0424.5368/6/2019 9012052523.62 398840.416.4228.65 28.61 28.750.123.35378/7/2019 14212052555.07 398784.0417.528.96 28.92 28.990.0323.35388/6/2199102052558.47 398724.326.828.88 28.94 28.820.06NM398/8/2019 9202052599.58 398716.1322.528.95 28.94 29.010.0621.75408/7/2019 14302052600.19 398696.342228.7828.9 28.980.221.65418/8/2019 9132052638.07 398694.6020.728.94 28.94 29.010.0722.5428/8/2019 9012052574.46 398657.6411.4228.98 29.04 29.050.0724.15438/8/2019 9072052625.36 398651.5621.728.928.95 29.010.1124.15448/6/2019 9232052576.31 398616.161.9527.925.88 24.453.45NMTR0795Page 2 of 6October 2019 TABLE A 6-5SURVEY OF TEMPERATURE DIFFERENTIALS IN CAPE FEAR RIVER Chemours Fayetteville Works, North CarolinaGeosyntec Consultants NC, P.C.Location Date Time of Readings X-coordinate (ft) Y-coordinate (ft) Water Depth (ft)6 Inches Above Sediment Surface (ºC)3 inches Above Sediment Surface (ºC)1 inch into Sediment Surface (ºC)Temperature Difference between Porewater and 6 inches Above Sediment Surface (ºC)Depth of Thalweg along Transect (ft)458/6/2019 933 2052565.83 398609.020.8224.2720.5 20.623.65NM468/8/2019 9252052634.22 398591.5920.128.96 28.95 29.020.0623.5478/7/2019 17402052675.76 398528.4419.629.23 29.34 29.380.1523.35488/8/2019 9322052616.72 398516.3415.728.97 28.97 29.020.0522.75498/6/2019 9432052618.96 398477.2311.6628.55 28.29 28.240.31NM508/8/2019 9432052643.92 398455.5018.128.97 28.97 29.020.05NM518/8/2019 9502052789.66 398448.7719.328.95 28.93290.0523.55528/7/2109 17352052718.88 398401.6519.229.32 29.31 29.370.0522.45538/6/2019 9492052605.12 398373.591.8328.89 28.85 28.820.07NM548/8/2019 9572052795.08 398347.8220.828.93 28.94290.0721.65558/7/2019 17282052737.13 398280.6619.629.28 29.34 29.390.1121.85568/6/2019 9562052638.10 398253.941.7829.129.01 29.040.06NM578/8/2019 10042052837.14 398217.0720.1228.93 28.93 29.010.0822.35588/7/2019 17232052696.54 398176.4918.629.28 29.28 29.320.0421.45598/6/2019 10042052654.44 398152.472.2329.21 29.06 29.110.1NM608/8/2019 10102052815.45 398097.2119.3228.84 28.91 28.980.1421.15618/7/2019 17172052760.08 398064.461829.26 29.19 29.290.0321.45628/6/2019 10162052680.39 397995.581.3729.23 29.07 29.190.04NM638/8/2019 10172052854.15 397975.4720.828.91 28.94290.0922.15648/7/2019 17082052741.75 397951.8220.229.17 29.24 29.270.120.65658/6/2019 10302052705.78 397868.412.312928.92 29.110.11NM668/7/219 17002052743.54 397845.8820.129.29 29.31 29.310.0221.85TR0795Page 3 of 6October 2019 TABLE A 6-5SURVEY OF TEMPERATURE DIFFERENTIALS IN CAPE FEAR RIVER Chemours Fayetteville Works, North CarolinaGeosyntec Consultants NC, P.C.Location Date Time of Readings X-coordinate (ft) Y-coordinate (ft) Water Depth (ft)6 Inches Above Sediment Surface (ºC)3 inches Above Sediment Surface (ºC)1 inch into Sediment Surface (ºC)Temperature Difference between Porewater and 6 inches Above Sediment Surface (ºC)Depth of Thalweg along Transect (ft)678/8/2019 1026 2052812.81 397827.2318.2228.89 28.99 29.050.1622.65688/6/2019 10392052729.84 397753.402.1628.94 28.98 29.070.13NM698/7/2019 16572052779.36 397700.7219.729.22 29.22 29.260.0421.15708-Aug10352052721.38 397674.710.9629.29 29.26 29.350.0621.15718/6/2019 10472052732.24 397632.421.1728.96 29.07 29.180.22NM728/8/2019 11142052787.90 397628.952129.02 28.99 29.040.0222.65738/8/2019 11322052727.29 397588.400.827.87 24.41 22.625.25NM748-Aug11482052728.34 397586.320.929.61 29.46 29.390.22NM758/7/2019 16442052783.78 397572.9120.929.08 29.21 29.120.0423.5768/8/2019 11192052773.98 397546.7211.5328.99 28.99 29.080.09NM778/6/2019 13322052754.05 397515.071.6729.94 29.86 29.920.02NM788/7/2019 16332052789.22 397426.7219.129.129.1 29.160.0622.85798/6/2019 15512052783.81 397365.657.8429.26 29.18 29.30.04NM808/7/2019 16242052809.44 397289.0322.629.18 29.16 29.170.0123.95818/6/2019 14442052780.80 397242.452.829.52 29.51 29.50.02NM828/7/2019 16162052817.47 397160.431929.11 29.07 29.140.0323.35838/6/2019 14362052794.61 397107.691.3229.53 29.54 29.60.07NM848/7/2019 16102052819.35 397061.1013.129.129.08 29.130.0322.35858/6/2019 14292052815.50 396971.192.5629.51 29.49 29.580.07NM868/7/2019 16032052836.75 396947.3313.129.129.05 29.110.0123.35878/6/2019 14172052835.73 396883.714.729.17 29.07 29.280.11NM888/7/2019 15572052861.87 396840.0020.7928.98 28.94 29.020.0424.5TR0795Page 4 of 6October 2019 TABLE A 6-5SURVEY OF TEMPERATURE DIFFERENTIALS IN CAPE FEAR RIVER Chemours Fayetteville Works, North CarolinaGeosyntec Consultants NC, P.C.Location Date Time of Readings X-coordinate (ft) Y-coordinate (ft) Water Depth (ft)6 Inches Above Sediment Surface (ºC)3 inches Above Sediment Surface (ºC)1 inch into Sediment Surface (ºC)Temperature Difference between Porewater and 6 inches Above Sediment Surface (ºC)Depth of Thalweg along Transect (ft)898/6/2019 1410 2052842.43 396784.315.7129.27 29.16 29.280.01NM908/7/2019 15462052877.37 396741.1123.2728.96 28.92290.0423.95918/6/2019 14032052853.13 396695.942.9329.45 29.37 29.320.13NM928/7/2019 15352052880.52 396668.1618.2228.94 28.88 28.960.0223.15938/8/2019 12222052851.42 396630.081.3429.7229.7 29.750.03NM948/6/2019 13532052864.10 396606.774.4229.68 29.48 29.370.31NM958/8/2019 12262052878.64 396604.3212.4229.21 29.22 29.220.01NM968/8/2019 12332052866.77 396581.151.2229.61 29.59 29.650.04NM978/9/2019 14.572052891.16 396543.3711.129.729.77 29.60.1NM988/8/2019 12452052916.85 396487.2120.229.13 29.12 29.170.0422.35998/6/2019 11352052873.66 396478.631.830.08 29.83 29.470.61NM1008/9/2019 14442052904.82 396390.5914.7529.53 29.66 29.690.1622.451018/6/2019 11442052892.59 396301.201.7230.07 30.05 30.080.01NM1028/9/2019 14312052917.29 396277.9813.229.64 29.54 29.710.0723.951038/6/2019 11542052897.30 396173.561.6829.829.74 29.660.14NM1048/9/2019 14182052914.55 396158.696.0529.63 29.62 29.350.2823.351058/8/2019 13282052902.18 396070.430.8429.5226.4 25.633.89NM1068/8/2019 13462052906.18 396065.651.153029.89 29.680.3222.851078/6/2019 12012052914.75 396065.353.7829.329.25 29.290.01NM1088/9/2019 13582052930.71 396018.0911.9429.3829.5 29.510.1321.85TR0795Page 5 of 6October 2019 TABLE A 6-5SURVEY OF TEMPERATURE DIFFERENTIALS IN CAPE FEAR RIVER Chemours Fayetteville Works, North CarolinaGeosyntec Consultants NC, P.C.Location Date Time of Readings X-coordinate (ft) Y-coordinate (ft) Water Depth (ft)6 Inches Above Sediment Surface (ºC)3 inches Above Sediment Surface (ºC)1 inch into Sediment Surface (ºC)Temperature Difference between Porewater and 6 inches Above Sediment Surface (ºC)Depth of Thalweg along Transect (ft)1098/6/2019 1210 2052918.36 395957.913.8829.28 29.19 29.30.02NM1108/9/2019 13442052944.33 395923.9912.6929.63 29.57 29.460.1722.351118/6/2019 12202052926.60 395820.42229.79 29.75 29.630.16NM1128/9/2019 13362052947.62 395791.0112.1629.57 29.46 29.60.0321.651138/9/2019 13242052954.26 395729.0413.5529.31 29.29 29.330.0221.951148/6/2019 12292052927.99 395721.821.9529.71 29.62 29.630.08NM1158/9/2019 13052052920.02 395663.840.7223.96 22.97 22.751.21NM1168/8/2019 14102052925.27 395656.870.722.16 22.13 22.20.04NM1178/9/2019 12402052961.84 395617.9614.6129.16 29.24 29.190.0321.651188/6/2019 12402052932.01 395590.984.8429.23 29.11 29.150.08NM1198/6/2019 12472052938.48 395491.442.529.4229.3 29.370.05NMNotes:ºC - celsiusft - feetNM - not measuredGreen shading Indicates temperature differential > 0.5 ºCTR0795Page 6 of 6October 2019 TABLE A 7-1ONSITE SOIL CHARACTERISTICSChemours Fayetteville Works, North CarolinaGeosyntec Consultants NC P.C.Clay Silt Sand GravelPIW-1-24-25-20190627PIW-1 24 25 Fine to medium grained sand SP-SC 4.6 0.0021 2.66 -- -- NP 17 9 2 89 0 35.6 1.7 0.6PIW-1-41.5-42.5-20190627PIW-1 41.5 42.5ClayCH -- 0.0053 2.66 57 27 30 17 67 16 17 0 47.9 1.4 0.9PIW-2D-Soil-24-25-20190815 PIW-2D 24 25ClayCH 4.2 0.0220 2.68 92 35 57 39 45 27 28 0 59 1.1 1.4PIW-2D-Soil-46-47-20190815 PIW-2D 46 47Silty sandSP-SM 4 0.0034 2.66 -- -- NP 27 4 7 89 0 41.5 1.6 0.7PIW-3-14-15-20190702PIW-3 14 15 Sand with fine to medium gravel GP -- 0.0012 2.65 -- -- NP 14 3 2 46 49 18.7 2.2 0.2PIW-3-24-25-20190702PIW-3 24 25 Gravelly sand with clay SP-SC -- 0.0100 2.63 -- -- NP 17 5 1 93 0 37 1.7 0.6PIW-4-13-14-20190701PIW-4 13 14Sandy clayCH -- 0.0120 2.66 102 43 59 27 48 30 22 0 54.1 1.2 1.2PIW-4-33-34.2-20190701PIW-4 33 34.2 Fine to medium grained sand SP-SM 3.9 0.0024 2.67 -- -- NP 13 2 5 93 0 26.1 2.0 0.4PIW-6-19-20-20190628PIW-6 19 20Clay with siltCL -- 0.0011 2.69 48 29 19 23 38 39 24 0 40.5 1.6 0.7PIW-7-24-25-20190625PIW-7 24 25 Fine to medium grained sand SP-SC 4.6 0.0013 2.64 39 18 21 20 12 5 83 0 39.6 1.6 0.7PIW-7-37-38-20190625PIW-7 37 38 Fine grained sand and silt SP-SM -- 0.0016 2.65 -- -- NP 14 3 2 95 0 32 1.8 0.5PIW-7-44-45-20190625PIW-7 44 45ClayCH -- 0.0015 2.67 61 25 36 20 58 19 23 0 35.9 1.7 0.6PIW-9-19-20-20190626PIW-9 19 20SandSP-SC 5.5 0.0006 2.66 -- -- NP 8 5 2 93 0 31.3 1.8 0.5PIW-10-42-43-20190624PIW-10 42 43ClayCH -- 0.0220 2.67 104 38 66 33 71 18 12 0 52.5 1.3 1.1PW-01-SOIL-14-15-20190730 PW-01 14 15Sand with siltSP 5.6 0.0013 2.68 -- -- NP 24 2 3 95 0 44.7 1.5 0.8PW-02-SOIL-14-15-20190729 PW-02 14 15 Clayey sand medium grained SC 5.2 0.0012 2.68 -- -- NP 19 10 4 87 0 -- 1.5 --PW-02-SOIL-16-17-20190729 PW-02 16 17Silty clayCH 4.9 0.0012 2.69 89 31 58 20 58 28 14 0 -- 1.3 --PW-02-SOIL-35-36-20190729 PW-02 35 36Clayey sandSC 4.7 0.0008 2.71 -- -- NP 13 4 13 83 0 -- 1.5 --PW-03-SOIL-6.5-7-20190723 PW-03 6.5 7Clayey sandSC 5.7 0.0031 2.66 29 18 11 9 18 9 73 0 -- 1.4 --PW-03-SOIL-16-17-20190723 PW-03 16 17ClayCH 4.7 0.0020 2.71 80 33 47 27 64 14 22 0 -- 1.1 --PW-03-SOIL-43-44-20190723 PW-03 43 44Silty sandSM 4.1 0.0033 2.68 -- -- NP 33 10 7 83 0 -- 1.4 --PW-04-SOIL-23-24-20190724 PW-04 23 24Silty sandSM 3.1 0.0069 2.69 -- -- NP 16 10 12 78 0 -- 1.4 --PW-04-SOIL-29-29.5-20190724 PW-04 29 29.5ClayCH 3.7 0.0360 2.72 67 32 35 23 50 23 28 0 -- 1.2 --PW-05-Soil-12-13-20190726PW-05 12 13Clayey sandSC 6.3 0.0011 2.67 38 23 15 9 18 14 69 0 -- 1.5 --PW-05-Soil-51-52-20190726PW-05 51 52Silty clayCH 4.4 0.0650 2.62 60 31 29 36 54 27 18 0 -- 1.2 --PW-05-Soil-76-77-20190726PW-05 76 77ClayCH 4.7 0.1000 2.66 90 37 53 56 51 42 7 0 -- 1.0 --PW-06-SOIL-16-17-20190726PW-06 16 17Sand with siltSP 5.3 0.0012 2.65 -- -- NP 13 4 4 92 0 -- 1.5 --PW-07-SOIL-14-15-20190724PW-07 14 15SandSP-SC 5.2 J <0.0011 2.65 -- -- -- 9 5.3 3.2 91.5 0 -- 1.6 --PW-07-SOIL-44-45-20190724PW-07 44 45Clay with sandCH 4.1 J 0.12 2.58 90 42 48 41.8 54.2 20.3 25.5 0 -- 1.22 --PW-09-SOIL-23-24-20190812PW-09 23 24Silty sandCH 4.3 0.025 2.63 75 37 38 32.7 50 35.9 14.1 0 56.1 1.16 1.3PW-09-SOIL-52-53-20190812PW-09 52 53 Clayey sand with siltSP-SM 6.1 0.0034 2.68 -- -- -- 24.4 3.2 10.2 85.5 1.1 41.5 1.56 0.7PW-10-SOIL-59-60-20190808PW-10* 59 60Silty claySC 5.4 0.0170 2.67 -- -- -- 26 27 18 55 0 43.6 1.5 0.8PW-11-SOIL-16-17-20190725 PW-11 16 17Sand with siltSW-SC 4.9 0.0007 2.68 -- -- NP 10 11 6 83 0 -- 1.5 --PW-11-SOIL-61-62-20190725 PW-11 61 62Sand with siltSC 4.1 0.0190 2.67 40 19 21 26 13 6 81 0 -- 1.5 --PW-12-SOIL-83-84-20190731 PW-12 83 84ClayCH 4.3 0.0370 2.67 93 40 53 27 61 30 9 0 58.2 1.1 1.4PW-12-SOIL-110-111-20190731PW-12110111Sand with siltSP-SC4.80.01102.67----NP256490043.41.50.8PW-13-SOIL-25-26-20190821PW-132526SandSP5.20.00122.67----NP143493045.61.50.8PW-13-SOIL-73-74-20190821PW-137374ClayCH4.50.05202.669138533054388058.11.11.4PW-13-SOIL-124-125-20190822PW-13124125Silty SandSM6.80.00142.66----NP187885045.31.50.8PW-14-SOIL-144-145-20190826PW-14144145Clayey sandSC5.70.00282.66----NP2131483042.91.50.8PW-15-SOIL-17.5-18-20190813PW-1517.518ClayCH4.00.02902.6310052483749483065.10.91.9PW-15-SOIL-38-39-20190813PW-153839Silty sandSM4.10.00072.7------373360038.51.70.6PW-15-SOIL-55-56-20190813PW-155556ClayCH4.10.05302.6768333535543314053.21.31.1PW-15-SOIL-112-113-20190813PW-15112113Silty sandSM4.10.00512.67----NP1871281036.21.70.6Visual DescriptionSample IDWell IDTop (ft bgs)Bottom(ft bgs)USCS ClassificationpH (s.u.)Liquid Limit of SoilsSpecific GravityFraction Organic Carbon (g/g)Porosity Calculation (%)Plastic Limit of SoilsIn Place Density (g/cc)Percent Moisture (%)Plasticity Index (PI)Grain Size Distribution (%)Void RatioTR0795Page 1 of 2October 2019 TABLE A 7-1ONSITE SOIL CHARACTERISTICS Chemours Fayetteville Works, North CarolinaGeosyntec Consultants NC P.C.PIW-1-24-25-20190627PIW-1 24 25 Fine to medium grained sand SP-SCPIW-1-41.5-42.5-20190627PIW-1 41.5 42.5ClayCHPIW-2D-Soil-24-25-20190815 PIW-2D 24 25ClayCHPIW-2D-Soil-46-47-20190815 PIW-2D 46 47Silty sandSP-SMPIW-3-14-15-20190702PIW-3 14 15 Sand with fine to medium gravel GPPIW-3-24-25-20190702PIW-3 24 25 Gravelly sand with clay SP-SCPIW-4-13-14-20190701PIW-4 13 14Sandy clayCHPIW-4-33-34.2-20190701PIW-4 33 34.2 Fine to medium grained sand SP-SMPIW-6-19-20-20190628PIW-6 19 20Clay with siltCLPIW-7-24-25-20190625PIW-7 24 25 Fine to medium grained sand SP-SCPIW-7-37-38-20190625PIW-7 37 38 Fine grained sand and silt SP-SMPIW-7-44-45-20190625PIW-7 44 45ClayCHPIW-9-19-20-20190626PIW-9 19 20SandSP-SCPIW-10-42-43-20190624PIW-10 42 43ClayCHPW-01-SOIL-14-15-20190730 PW-01 14 15Sand with siltSPPW-02-SOIL-14-15-20190729 PW-02 14 15 Clayey sand medium grained SCPW-02-SOIL-16-17-20190729 PW-02 16 17Silty clayCHPW-02-SOIL-35-36-20190729 PW-02 35 36Clayey sandSCPW-03-SOIL-6.5-7-20190723 PW-03 6.5 7Clayey sandSCPW-03-SOIL-16-17-20190723 PW-03 16 17ClayCHPW-03-SOIL-43-44-20190723 PW-03 43 44Silty sandSMPW-04-SOIL-23-24-20190724 PW-04 23 24Silty sandSMPW-04-SOIL-29-29.5-20190724 PW-04 29 29.5ClayCHPW-05-Soil-12-13-20190726PW-05 12 13Clayey sandSCPW-05-Soil-51-52-20190726PW-05 51 52Silty clayCHPW-05-Soil-76-77-20190726PW-05 76 77ClayCHPW-06-SOIL-16-17-20190726PW-06 16 17Sand with siltSPPW-07-SOIL-14-15-20190724PW-07 14 15SandSP-SCPW-07-SOIL-44-45-20190724PW-07 44 45Clay with sandCHPW-09-SOIL-23-24-20190812PW-09 23 24Silty sandCHPW-09-SOIL-52-53-20190812PW-09 52 53 Clayey sand with siltSP-SMPW-10-SOIL-59-60-20190808PW-10* 59 60Silty claySCPW-11-SOIL-16-17-20190725 PW-11 16 17Sand with siltSW-SCPW-11-SOIL-61-62-20190725 PW-11 61 62Sand with siltSCPW-12-SOIL-83-84-20190731 PW-12 83 84ClayCHPW-12-SOIL-110-111-20190731PW-12110111Sand with siltSP-SCPW-13-SOIL-25-26-20190821PW-132526SandSPPW-13-SOIL-73-74-20190821PW-137374ClayCHPW-13-SOIL-124-125-20190822PW-13124125Silty SandSMPW-14-SOIL-144-145-20190826PW-14144145Clayey sandSCPW-15-SOIL-17.5-18-20190813PW-1517.518ClayCHPW-15-SOIL-38-39-20190813PW-153839Silty sandSMPW-15-SOIL-55-56-20190813PW-155556ClayCHPW-15-SOIL-112-113-20190813PW-15112113Silty sandSMVisual DescriptionSample IDWell IDTop (ft bgs)Bottom(ft bgs)USCS Classification8.83.213.4Surficial Aquifer4.10.70.8Upper Cape Fear Confining Unit5.00.80.9Black Creek Confining UnitNotes:8.73.113.9Black Creek Aquifer1. * PW-10 was properly abandoned and replaced with PW-10R.52.30.246.4Floodplain Deposit2.61.546.6Black Creek Aquifer4.40.70.9Black Creek Confining Unit3. Coefficient of Uniformity (Cu) = D60 / D104.01.454.7Black Creek Aquifer4. Coefficient of Curvature (Cc) = (D30)2 / (D60 * D10)4.6 0.80.9Floodplain Deposit8.93.54.0Floodplain Deposit3.11.269.4Black Creek Aquifer4.50.80.9Upper Cape Fear Confining Unit3.21.143.5Surficial Aquifer7. Visual descriptions are transcribed from field logs.3.70.70.8Black Creek Confining Unit8. USCS classifications are derived from laboratory data.2.11.227.4Perched Zone-- not measured 13.35.812.0Perched Zone% - percent 3.90.70.8Perched Claycc - cubic centimeter21.77.76.1Surficial AquiferCH - fat clay16.51.62.7Perched ZoneCL - lean clay4.40.70.9Perched Clayft bgs - feet below ground surface3.91.96.6Surficial Aquiferft/d - feet per day6.52.63.1Surficial Aquiferg - gram4.90.80.9Black Creek Confining UnitNP - no plasticity25.80.62.2Surficial AquiferSC - clayey sand 4.20.70.8Clay Lens in Surficial AquiferSM - silty sand3.50.10.8Black Creek Confining UnitSP - poorly graded sand4.51.736.7Surficial AquiferGP - poorly graded gravel4.51.833.6Surficial AquiferSW - well graded sand4.70.80.9Clay Lens in Surficial AquiferUSCS - Unified Soil Classification System3.89 0.73 0.79Black Creek Confining Unit13.7 5.36 12.76Black Creek Aquifer28.90.31.0Clay Lens in Black Creek Aquifer8.52.82.7Surficial Aquifer22.15.15.0Black Creek Aquifer3.60.70.8Clay Lens in Black Creek Aquifer3.91.916.7Black Creek Aquifer2.31.294.9Surficial Aquifer3.50.70.8Black Creek Confining Unit9.13.68.6Black Creek Aquifer23.84.86.0Black Creek Aquifer3.30.70.7Perched Clay23.80.51.0Surficial Aquifer3.80.70.8Black Creek Confining Unit20.32.94.7Black Creek Aquifer6. Atterberg limits (Liquid Limit and Plastic Limit) are only tested for fine-grained materials.Lithologic UnitK from Grain Size Geometric Mean (ft/d)2."USCS Classification" is the Unified Soil Classification System from the standard practice outlined in ASTM D2487-17.5. Hydraulic Conductivity (K) from grain size calculated usingHydrogeoSieveXL (Devlin, 2015).Coefficient of Uniformity (Cu)Coefficient of Curvature (Cc)TR0795Page 2 of 2October 2019 TABLE A 7-2 ONSITE SOIL ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Location PW-01 PW-01 PW-02 PW-03 Field Sample ID PW-01-SOIL-14-15-20190730 PW-01-SOIL-11-12-20190731 PW-02-SOIL-14-15-20190729 PW-03-SOIL-6.5-7-20190723 Sample Date 7/30/2019 7/31/2019 7/29/2019 7/23/2019 QA/QC -------- Vadose Zome Sample*Y Y Y Y Depth (ft)14-15 11-12 14-15 6.5-7 SDG 200-49879-2 200-49879-2 200-49846-2 200-49745-3 Lab Sample ID 200-49879-1 200-49879-3 200-49846-2 200-49745-1 Table 3+ Lab SOP (ng/kg) HFPO-DA (EPA Method 537 Mod)1,800 1,200 1,500 1,700 PFMOAA 1,300 <1,000 <1,000 UJ <1,000 PFO2HxA 1,300 <1,000 <1,000 UJ 1,290 U PFO3OA <1,000 <1,000 <1,000 UJ <1,000 PFO4DA <1,000 <1,000 <1,000 UJ <1,000 PFO5DA <1,000 <1,000 <1,000 1,160 U PMPA <1,000 <1,000 <1,000 2,460 U PEPA <1,000 <1,000 <1,000 <1,000 PFESA-BP1 <1,000 <1,000 <1,000 <1,000 PFESA-BP2 <1,000 <1,000 <1,000 <1,000 Byproduct 4 <1,000 UJ <1,000 R <1,000 R <1,000 R Byproduct 5 <1,000 UJ <1,000 R <1,000 R <1,000 R Byproduct 6 <1,000 <1,000 <1,000 <1,000 NVHOS <1,000 <1,000 <1,000 <1,000 EVE Acid <1,000 <1,000 <1,000 <1,000 Hydro-EVE Acid <1,000 <1,000 <1,000 UJ <1,000 R-EVE <1,000 UJ <1,000 R <1,000 R <1,000 R PES <1,000 <1,000 <1,000 <1,000 PFECA B <1,000 <1,000 <1,000 UJ <1,000 PFECA-G <1,000 <1,000 <1,000 UJ <1,000 Other PFAS (ng/kg) 10:2 Fluorotelomer sulfonate <200 <200 <200 <200 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)<2,000 <2,000 <2,000 <2,000 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)<2,000 <2,000 <2,000 <2,000 6:2 Fluorotelomer sulfonate <2,000 <2,000 <2,000 <2,000 ADONA <210 <210 <210 <210 F-53B Major <200 <200 <200 <200 F-53B Minor <200 <200 <200 <200 NaDONA <210 <210 <210 <210 N-ethyl perfluorooctane sulfonamidoacetic acid <2,000 <2,000 <2,000 <2,000 N-methyl perfluorooctane sulfonamidoacetic acid <2,000 <2,000 <2,000 <2,000 Perfluorobutane Sulfonic Acid <200 <200 <200 <200 Perfluorobutanoic Acid <200 <200 <200 <200 Perfluorodecane Sulfonic Acid <200 <200 <200 <200 Perfluorodecanoic Acid <200 <200 <200 <200 Perfluorododecane sulfonic acid (PFDoS)<200 <200 <200 <200 Perfluorododecanoic Acid <200 <200 <200 <200 Perfluoroheptane sulfonic acid (PFHpS)<200 <200 <200 <200 Perfluoroheptanoic Acid <200 <200 <200 <200 Perfluorohexadecanoic acid (PFHxDA)<200 <200 <200 <200 Perfluorohexane Sulfonic Acid <200 <200 <200 <200 Perfluorohexanoic Acid <200 <200 <200 <200 Perfluorononanesulfonic acid <200 <200 <200 <200 Perfluorononanoic Acid <200 <200 <200 <200 Perfluorooctadecanoic acid <200 <200 <200 <200 Perfluorooctane Sulfonamide <200 <200 <200 <200 Perfluoropentane sulfonic acid (PFPeS)<200 <200 <200 <200 Perfluoropentanoic Acid <200 <200 <200 <200 Perfluorotetradecanoic Acid <200 <200 <200 <200 Perfluorotridecanoic Acid <200 <200 <200 <200 Perfluoroundecanoic Acid <200 <200 <200 <200 PFOA <200 <200 <200 <200 PFOS <500 <500 <500 <500 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol <1,000 <1,000 <1,000 <1,000 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol <1,000 <1,000 <1,000 <1,000 N-ethylperfluoro-1-octanesulfonamide <1,000 <1,000 <1,000 <1,000 N-methyl perfluoro-1-octanesulfonamide <1,000 <1,000 <1,000 <1,000 Notes: 1. Associated equipment blank and field blank results reported in Table 7-3. 2. * Select soil samples collected from saturated zone for soil physical parameters were also inadvertently analyzed for PFAS. Bold - Analyte detected above associated reporting limit EPA - Environmental Protection Agency ft - feet J - Analyte detected. Reported value may not be accurate or precise ng/kg - nanograms per kilogram QA/QC - Quality assurance/ quality control R - Result rejected based on QA/QC criteria SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. -- - No data reported TR0795 Page 1 of 5 October 2019 TABLE A 7-2 ONSITE SOIL ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Location Field Sample ID Sample Date QA/QC Vadose Zome Sample* Depth (ft) SDG Lab Sample ID Table 3+ Lab SOP (ng/kg) HFPO-DA (EPA Method 537 Mod) PFMOAA PFO2HxA PFO3OA PFO4DA PFO5DA PMPA PEPA PFESA-BP1 PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/kg) 10:2 Fluorotelomer sulfonate 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 6:2 Fluorotelomer sulfonate ADONA F-53B Major F-53B Minor NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic Acid Perfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS) Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA) Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic Acid Perfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide Notes: 1. Associated equipment blank and field blank results reported in Table 7-3. 2. * Select soil samples collected from saturated zone for soil physical parameters were also inadvertently analyzed for PFAS. Bold - Analyte detected above associated reporting limit EPA - Environmental Protection Agency ft - feet J - Analyte detected. Reported value may not be accurate or precise ng/kg - nanograms per kilogram QA/QC - Quality assurance/ quality control R - Result rejected based on QA/QC criteria SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. -- - No data reported PW-05 PW-06 PW-07 PW-07 PW-05 Soil-12-13-20190726 PW-06-SOIL-16-17-20190729 DUP1-072419 PW-07SOIL-14-15-20190724 7/26/2019 7/29/2019 7/24/2019 7/24/2019 ----Field Duplicate -- Y Y Y Y 12-13 16-17 14-15 14-15 200-49809-2 200-49846-2 200-49770-2 200-49770-2 200-49809-1 200-49846-1 200-49770-5 200-49770-3 850 <250 <250 <250 <1,000 R <1,000 <1,000 <1,000 <1,000 UJ <1,000 <1,000 <1,000 <1,000 UJ <1,000 <1,000 <1,000 <1,000 UJ <1,000 <1,000 <1,000 <1,000 UJ <1,000 <1,000 <1,000 <1,000 UJ <1,000 <1,000 <1,000 <1,000 UJ <1,000 <1,000 <1,000 <1,000 UJ <1,000 <1,000 <1,000 <1,000 UJ <1,000 <1,000 <1,000 <1,000 R <1,000 R <1,000 R <1,000 R <1,000 R <1,000 R <1,000 R <1,000 R <1,000 UJ <1,000 <1,000 <1,000 <1,000 UJ <1,000 <1,000 <1,000 <1,000 UJ <1,000 <1,000 <1,000 <1,000 UJ <1,000 <1,000 <1,000 <1,000 R <1,000 R <1,000 R <1,000 R <1,000 UJ <1,000 <1,000 <1,000 <1,000 UJ <1,000 <1,000 <1,000 <1,000 UJ <1,000 <1,000 <1,000 <200 UJ <200 <200 <200 <2,000 UJ <2,000 <2,000 <2,000 <2,000 UJ <2,000 <2,000 <2,000 <2,000 UJ <2,000 <2,000 <2,000 <210 <210 <210 <210 <200 <200 <200 <200 <200 <200 <200 <200 <210 <210 <210 <210 <2,000 UJ <2,000 <2,000 <2,000 <2,000 UJ <2,000 <2,000 <2,000 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <500 UJ <500 <500 <500 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 TR0795 Page 2 of 5 October 2019 TABLE A 7-2 ONSITE SOIL ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Location Field Sample ID Sample Date QA/QC Vadose Zome Sample* Depth (ft) SDG Lab Sample ID Table 3+ Lab SOP (ng/kg) HFPO-DA (EPA Method 537 Mod) PFMOAA PFO2HxA PFO3OA PFO4DA PFO5DA PMPA PEPA PFESA-BP1 PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/kg) 10:2 Fluorotelomer sulfonate 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 6:2 Fluorotelomer sulfonate ADONA F-53B Major F-53B Minor NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic Acid Perfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS) Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA) Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic Acid Perfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide Notes: 1. Associated equipment blank and field blank results reported in Table 7-3. 2. * Select soil samples collected from saturated zone for soil physical parameters were also inadvertently analyzed for PFAS. Bold - Analyte detected above associated reporting limit EPA - Environmental Protection Agency ft - feet J - Analyte detected. Reported value may not be accurate or precise ng/kg - nanograms per kilogram QA/QC - Quality assurance/ quality control R - Result rejected based on QA/QC criteria SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. -- - No data reported PW-09 PW-09 PW-10 PW-10 PW-09-SOIL-10-11-20190812 PW-09-SOIL-8.5-9-20190812 PW-10-SOIL-3.5-4-20190808 PW-10-SOIL-8-8.5-20190808 8/12/2019 8/12/2019 8/8/2019 8/8/2019 -------- Y Y Y Y 10-11 8.5-9 3.5-4 8-8.5 200-50062-2 200-50062-2 200-50014-2 200-50014-2 200-50062-1 200-50062-2 200-50014-1 200-50014-2 <250 <250 570 28,000 <1,000 UJ <1,000 UJ <1,000 7,300 <1,000 UJ <1,000 UJ <1,000 10,000 J <1,000 UJ <1,000 UJ <1,000 4,000 <1,000 UJ <1,000 UJ <1,000 4,700 <1,000 UJ <1,000 UJ 1,260 U 5,200 <1,000 UJ <1,000 UJ <1,000 27,000 J <1,000 UJ <1,000 UJ <1,000 13,000 J <1,000 UJ <1,000 UJ <1,000 <1,000 <1,000 UJ <1,000 UJ <1,000 1,400 <1,000 R <1,000 R <1,000 R <1,000 R <1,000 R <1,000 R <1,000 R <1,000 R <1,000 UJ <1,000 UJ <1,000 <1,000 <1,000 UJ <1,000 UJ <1,000 <1,000 <1,000 UJ <1,000 UJ <1,000 <1,000 <1,000 UJ <1,000 UJ <1,000 1,500 <1,000 R <1,000 R <1,000 R <1,000 R <1,000 UJ <1,000 UJ <1,000 <1,000 <1,000 UJ <1,000 UJ <1,000 <1,000 <1,000 UJ <1,000 UJ <1,000 <1,000 <200 <200 <200 <200 <2,000 <2,000 <2,000 <2,000 <2,000 <2,000 <2,000 <2,000 <2,000 <2,000 <2,000 <2,000 <210 <210 <210 <210 <200 <200 <200 <200 <200 <200 <200 <200 <210 <210 <210 <210 <2,000 <2,000 <2,000 <2,000 <2,000 <2,000 <2,000 <2,000 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 310 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <500 <500 <500 <500 ----<1,000 <1,000 ----<1,000 <1,000 ----<1,000 <1,000 ----<1,000 <1,000 TR0795 Page 3 of 5 October 2019 TABLE A 7-2 ONSITE SOIL ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Location Field Sample ID Sample Date QA/QC Vadose Zome Sample* Depth (ft) SDG Lab Sample ID Table 3+ Lab SOP (ng/kg) HFPO-DA (EPA Method 537 Mod) PFMOAA PFO2HxA PFO3OA PFO4DA PFO5DA PMPA PEPA PFESA-BP1 PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/kg) 10:2 Fluorotelomer sulfonate 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 6:2 Fluorotelomer sulfonate ADONA F-53B Major F-53B Minor NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic Acid Perfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS) Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA) Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic Acid Perfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide Notes: 1. Associated equipment blank and field blank results reported in Table 7-3. 2. * Select soil samples collected from saturated zone for soil physical parameters were also inadvertently analyzed for PFAS. Bold - Analyte detected above associated reporting limit EPA - Environmental Protection Agency ft - feet J - Analyte detected. Reported value may not be accurate or precise ng/kg - nanograms per kilogram QA/QC - Quality assurance/ quality control R - Result rejected based on QA/QC criteria SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. -- - No data reported PW-11 PW-12 PW-12 PW-13 PW-11-SOIL-16-17-20190725 PW-12-SOIL-36-37-20190731 PW-12-SOIL-45-46-20190731 PW-13-Soil-25-26-20190821 7/25/2019 7/31/2019 7/31/2019 8/21/2019 -------- Y N N Y 16-17 36-37 45-46 25-26 200-49801-2 200-49879-2 200-49879-2 200-50221-2 200-49801-1 200-49879-4 200-49879-5 200-50221-1 620 830 <250 <250 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 R <1,000 R <1,000 UJ <1,000 <1,000 R <1,000 R <1,000 UJ <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 R <1,000 R <1,000 R <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <200 <200 <200 UJ <200 <2,000 <2,000 <2,000 <2,000 <2,000 <2,000 <2,000 <2,000 <2,000 <2,000 <2,000 <2,000 <210 <210 <210 <210 <200 <200 <200 <200 <200 <200 <200 <200 <210 <210 <210 <210 <2,000 <2,000 <2,000 <2,000 <2,000 <2,000 <2,000 <2,000 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 UJ <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <500 <500 <500 <500 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 TR0795 Page 4 of 5 October 2019 TABLE A 7-2 ONSITE SOIL ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Location Field Sample ID Sample Date QA/QC Vadose Zome Sample* Depth (ft) SDG Lab Sample ID Table 3+ Lab SOP (ng/kg) HFPO-DA (EPA Method 537 Mod) PFMOAA PFO2HxA PFO3OA PFO4DA PFO5DA PMPA PEPA PFESA-BP1 PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/kg) 10:2 Fluorotelomer sulfonate 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 6:2 Fluorotelomer sulfonate ADONA F-53B Major F-53B Minor NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic Acid Perfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS) Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA) Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic Acid Perfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide Notes: 1. Associated equipment blank and field blank results reported in Table 7-3. 2. * Select soil samples collected from saturated zone for soil physical parameters were also inadvertently analyzed for PFAS. Bold - Analyte detected above associated reporting limit EPA - Environmental Protection Agency ft - feet J - Analyte detected. Reported value may not be accurate or precise ng/kg - nanograms per kilogram QA/QC - Quality assurance/ quality control R - Result rejected based on QA/QC criteria SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. -- - No data reported PW-15 PW-15-SOIL-38-39-20190813 8/13/2019 -- N 38-39 200-50083-2 200-50083-2 <250 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <200 <2,000 <2,000 <2,000 <210 <200 <200 <210 <2,000 <2,000 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <500 <1,000 <1,000 <1,000 <1,000 TR0795 Page 5 of 5 October 2019 TABLE A 7-3 ONSITE SOIL ANALYTICAL RESULTS - QUALITY CONTROL SAMPLES Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Location DRILL WATER*EB EB EB Field Sample ID DRILL WATER-20190731 PW-EQBLK-1-20190725 PW-EQBLK-2-20190726 PW-EQBLK-3 Sample Date 7/31/2019 7/25/2019 7/26/2019 7/30/2019 QA/QC --Equipment Blank Equipment Blank Equipment Blank Depth (ft)---- SDG 200-49879-2 200-49801-2 200-49809-2 200-49879-2 Lab Sample ID 200-49879-8 200-49801-3 200-49809-4 200-49879-2 Table 3+ Lab SOP (ng/L) HFPO-DA (EPA Method 537 Mod)17 <4 <3.6 <4 PFMOAA <5 --<5 <5 PFO2HxA 10 --<2 <2 PFO3OA <2 --<2 <2 PFO4DA <2 --<2 <2 PFO5DA <2 --<2 <2 PMPA 130 --<10 <10 PEPA <20 --<20 <20 PFESA-BP1 <2 --<2 <2 PFESA-BP2 6.7 --<2 <2 Byproduct 4 <2 --<2 <2 Byproduct 5 <2 --<2 <2 Byproduct 6 <2 --<2 <2 NVHOS <2 --<2 <2 EVE Acid <2 --<2 <2 Hydro-EVE Acid <2 --<2 <2 R-EVE <2 --<2 <2 PES <2 --<2 <2 PFECA B <2 --<2 <2 PFECA-G <2 --<2 <2 Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate <2 <2 <1.8 <2 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)<20 <20 <18 <20 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)<20 <20 <18 <20 6:2 Fluorotelomer sulfonate <20 <20 <18 <20 ADONA <2.1 <2.1 <1.9 <2.1 F-53B Major <2 <2 <1.8 <2 F-53B Minor <2 <2 <1.8 <2 NaDONA <2.1 <2.1 <1.9 <2.1 N-ethyl perfluorooctane sulfonamidoacetic acid <20 <20 <18 <20 N-methyl perfluorooctane sulfonamidoacetic acid <20 <20 <18 <20 Perfluorobutane Sulfonic Acid 2.2 <2 <1.8 <2 Perfluorobutanoic Acid <2 <2 0.32 <2 Perfluorodecane Sulfonic Acid <2 <2 <1.8 <2 Perfluorodecanoic Acid <2 <2 <1.8 <2 Perfluorododecane sulfonic acid (PFDoS)<2 <2 <1.8 <2 Perfluorododecanoic Acid <2 <2 <1.8 <2 Perfluoroheptane sulfonic acid (PFHpS)<2 <2 <1.8 <2 Perfluoroheptanoic Acid <2 <2 <1.8 <2 Perfluorohexadecanoic acid (PFHxDA)<2 <2 <1.8 <2 Perfluorohexane Sulfonic Acid <2 <2 0.24 <2 Perfluorohexanoic Acid <2 <2 0.92 <2 Perfluorononanesulfonic acid <2 <2 <1.8 <2 Perfluorononanoic Acid <2 <2 <1.8 <2 Perfluorooctadecanoic acid <2 <2 <1.8 <2 Perfluorooctane Sulfonamide <2 <2 <1.8 <2 Perfluoropentane sulfonic acid (PFPeS)<2 <2 <1.8 <2 Perfluoropentanoic Acid <2 <2 <1.8 <2 Perfluorotetradecanoic Acid <2 <2 <1.8 <2 Perfluorotridecanoic Acid <2 <2 <1.8 <2 Perfluoroundecanoic Acid <2 <2 <1.8 <2 PFOA <2 <2 <1.8 <2 PFOS <2 <2 <1.8 <2 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol <2 --<2 <2 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol <2 --<2 <2 N-ethylperfluoro-1-octanesulfonamide <2 --<2 <2 N-methyl perfluoro-1-octanesulfonamide <2 --<2 <2 Notes: 1. Associated soil analytical results reported in Table 7-2. 2. * Drill Water was sourced from offsite fire hydrant. Water is from Bladen County Water System. Bold - Analyte detected above associated reporting limit EPA - Environmental Protection Agency ft - feet ng/L - nanograms per liter QA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure < - Analyte not detected above associated reporting limit. -- - No data reported TR0795 Page 1 of 1 October 2019 TABLE A 7-4OFFSITE SOIL CHARACTERISTICS Chemours Fayetteville Works, North CarolinaGeosyntec Consultants NC P.C.BLADEN-1S-081419Bladen-1S 67 Fine to medium grained Silty SandSC 4.0 0.0025 2.67 0 0NP20.3BLADEN-2D-081519-72-73Bladen-2D 72 73 Medium grained sand trace micaSP-SM4.2 0.0023 4.66 0 0NP33.8BLADEN-3D-Soil-081919-42-43Bladen-3D 42 43Sand with claySC6.0 0.0086 2.69 0 0NP22.6Bladen-3S-Soil-082019-5-6Bladen-3S 56Coarse grained sandSW-- ---- -- ----8.7Bladen-4S-Soil-082119-5-6Bladen-4S 56 Medium to coarse sand with gravelSP-SM7.8 0.0005 2.65 0 0NP20.1CUMBERLAND-1D-46-47-20190912 Cumberland-1D 46 47Fine Grained SandSP4.4 J 0.0077 2.67 -- ----27.5CUMBERLAND-1S-6-7-20190913Cumberland-1S 67Medium grained sand with siltSP5.2 J 0.0021 2.66 -- ----7.1Cumberland-2D-soil-49-50-0912Cumberland-2D 49 50Fine to medium grained sandSP5.6 0.0068 2.69 -- ----23.9Cumberland-2S-soil-5-6-0912Cumberland-2S 56Fine grained clayey sandSP-SM5.3 0.0080 2.65 -- ----19.3Cumberland-3D-24-25-20190911Cumberland-3D 24 25 Medium to coarse grained sandSP-SM5.0 0.0028 2.66 -- ----11.7Cumberland-4S-soil-5-6-0911Cumberland-4S 56Fine to medium grained sandSP-SC4.7 0.0018 2.68 -- ----14.3Cumberland-5D-54-55-20190911Cumberland-5D 54 55Fine grained sandSP-SM4.9 0.0160 2.63 -- ----17.8Robeson-1S-soil-15-16-20190909Robeson-1S 15 16Fine grained silty sandSP-SM8.2 0.0012 2.67 0 0NP18.4Notes:1. Laboratory results available as of 09/24/2019 are reported. Additional data will be presented in an addendum to this report.2."USCS Classification" is the Unified Soil Classification System from the standard practice outlined in ASTM D2487-17.3. Coefficient of Uniformity (Cu) = D60 / D104. Coefficient of Curvature (Cc) = (D30)2 / (D60 * D10)5. Hydraulic Conductivity (K) from grain size calculated using HydrogeoSieveXL (Devlin, 2015).6. Atterberg limits (Liquid Limit and Plastic Limit) are only tested for fine-grained materials.7. Visual descriptions are transcribed from field logs.8. USCS classifications are derived from laboratory data.-- not measured % - percent cc - cubic centimeterNP - no plasticityft/d - feet per dayg - gramUSCS - Unified Soil Classification Systemft bgs - feet below ground surfaceCH - fat clayCL - lean claySC - clayey sand SM - silty sandSP - poorly graded sandSW - well graded sandPlasticity Index (PI)Sample IDWell IDTop (ft bgs)Bottom(ft bgs)Visual DescriptionUSCS Classification pH (s.u.)Fraction Organic Carbon (g/g)Specific GravityLiquid Limit of SoilsPlastic Limit of SoilsPercent Moisture (%)TR0795Page 1 of 3October 2019 TABLE A 7-4OFFSITE SOIL CHARACTERISTICS Chemours Fayetteville Works, North CarolinaGeosyntec Consultants NC P.C.BLADEN-1S-081419Bladen-1S 67 Fine to medium grained Silty SandSC BLADEN-2D-081519-72-73Bladen-2D 72 73 Medium grained sand trace micaSP-SMBLADEN-3D-Soil-081919-42-43Bladen-3D 42 43Sand with claySCBladen-3S-Soil-082019-5-6Bladen-3S 56Coarse grained sandSWBladen-4S-Soil-082119-5-6Bladen-4S 56 Medium to coarse sand with gravelSP-SMCUMBERLAND-1D-46-47-20190912 Cumberland-1D 46 47Fine Grained SandSPCUMBERLAND-1S-6-7-20190913Cumberland-1S 67Medium grained sand with siltSPCumberland-2D-soil-49-50-0912Cumberland-2D 49 50Fine to medium grained sandSPCumberland-2S-soil-5-6-0912Cumberland-2S 56Fine grained clayey sandSP-SMCumberland-3D-24-25-20190911Cumberland-3D 24 25 Medium to coarse grained sandSP-SMCumberland-4S-soil-5-6-0911Cumberland-4S 56Fine to medium grained sandSP-SCCumberland-5D-54-55-20190911Cumberland-5D 54 55Fine grained sandSP-SMRobeson-1S-soil-15-16-20190909Robeson-1S 15 16Fine grained silty sandSP-SMNotes:1. Laboratory results available as of 09/24/2019 are reported. Additional data will be presented in an addendum to this report.2."USCS Classification" is the Unified Soil Classification System from the standard practice outlined in ASTM D2487-17.3. Coefficient of Uniformity (Cu) = D60 / D104. Coefficient of Curvature (Cc) = (D30)2 / (D60 * D10)5. Hydraulic Conductivity (K) from grain size calculated using HydrogeoSieveXL (Devlin, 2015).6. Atterberg limits (Liquid Limit and Plastic Limit) are only tested for fine-grained materials.7. Visual descriptions are transcribed from field logs.8. USCS classifications are derived from laboratory data.-- not measured % - percent cc - cubic centimeterNP - no plasticityft/d - feet per dayg - gramUSCS - Unified Soil Classification Systemft bgs - feet below ground surfaceCH - fat clayCL - lean claySC - clayey sand SM - silty sandSP - poorly graded sandSW - well graded sandSample IDWell IDTop (ft bgs)Bottom(ft bgs)Visual DescriptionUSCS ClassificationClay Silt Sand Gravel9.2 8.6 81.7 0.5 39.6 1.61 0.7 10.182.9 9.1 88 0 39.1 1.62 0.6 9.1710.6 7.3 82.1 0 46.2 1.44 0.9 5.89-- -- -- ------ ----2.6 8.8 88.6 0 42 1.54 0.7 4.716.2 3.2 90.6 0 42.9 1.52 0.8 3.523.3 16.1 80.6 0 36.6 1.69 0.6 17.481.3 -0.03 94.6 4.1 44.7 1.48 0.8 1.617.8 14.8 77.4 0 40.7 1.57 0.7 19.121.2 6.7 91.2 1 47.3 1.4 0.9 2.437.9 3.3 88.8 0 39 1.63 0.6 6.345.5 10.7 83.8 0 54.9 1.19 1.25.32.6 7.1 90.3 0 41.9 1.55 0.7 2.53Grain Size Distribution (%)Porosity Calculation (%)In Place Density (g/cc)Void RatioCoefficient of Uniformity (Cu)TR0795Page 2 of 3October 2019 TABLE A 7-4OFFSITE SOIL CHARACTERISTICS Chemours Fayetteville Works, North CarolinaGeosyntec Consultants NC P.C.BLADEN-1S-081419Bladen-1S 67 Fine to medium grained Silty SandSC BLADEN-2D-081519-72-73Bladen-2D 72 73 Medium grained sand trace micaSP-SMBLADEN-3D-Soil-081919-42-43Bladen-3D 42 43Sand with claySCBladen-3S-Soil-082019-5-6Bladen-3S 56Coarse grained sandSWBladen-4S-Soil-082119-5-6Bladen-4S 56 Medium to coarse sand with gravelSP-SMCUMBERLAND-1D-46-47-20190912 Cumberland-1D 46 47Fine Grained SandSPCUMBERLAND-1S-6-7-20190913Cumberland-1S 67Medium grained sand with siltSPCumberland-2D-soil-49-50-0912Cumberland-2D 49 50Fine to medium grained sandSPCumberland-2S-soil-5-6-0912Cumberland-2S 56Fine grained clayey sandSP-SMCumberland-3D-24-25-20190911Cumberland-3D 24 25 Medium to coarse grained sandSP-SMCumberland-4S-soil-5-6-0911Cumberland-4S 56Fine to medium grained sandSP-SCCumberland-5D-54-55-20190911Cumberland-5D 54 55Fine grained sandSP-SMRobeson-1S-soil-15-16-20190909Robeson-1S 15 16Fine grained silty sandSP-SMNotes:1. Laboratory results available as of 09/24/2019 are reported. Additional data will be presented in an addendum to this report.2."USCS Classification" is the Unified Soil Classification System from the standard practice outlined in ASTM D2487-17.3. Coefficient of Uniformity (Cu) = D60 / D104. Coefficient of Curvature (Cc) = (D30)2 / (D60 * D10)5. Hydraulic Conductivity (K) from grain size calculated using HydrogeoSieveXL (Devlin, 2015).6. Atterberg limits (Liquid Limit and Plastic Limit) are only tested for fine-grained materials.7. Visual descriptions are transcribed from field logs.8. USCS classifications are derived from laboratory data.-- not measured % - percent cc - cubic centimeterNP - no plasticityft/d - feet per dayg - gramUSCS - Unified Soil Classification Systemft bgs - feet below ground surfaceCH - fat clayCL - lean claySC - clayey sand SM - silty sandSP - poorly graded sandSW - well graded sandSample IDWell IDTop (ft bgs)Bottom(ft bgs)Visual DescriptionUSCS Classification3.264.24 Surficial Aquifer3.0313.33 Black Creek Aquifer3.494.4 Black Creek Aquifer----Surficial Aquifer2.2212.8 Surficial Aquifer1.826.35 Black Creek Aquifer5.575.96 Surficial Aquifer1.06128.36 Black Creek Aquifer6.854.42 Surficial Aquifer1.1988.21 Black Creek Aquifer3.387.81 Surficial Aquifer2.695.5 Black Creek Aquifer1.5618.18 Surficial AquiferCoefficient of Curvature (Cc)K from Grain Size Geometric Mean (ft/d)Lithologic UnitTR0795Page 3 of 3October 2019 TABLE A 7-5 OFFSITE SOIL ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Location BLADEN-1S BLADEN-1S BLADEN-2S BLADEN-3S Field Sample ID BLADEN-1S-081419 DUP-1-081419 BLADEN-2S-081619-9.5-10.5 Bladen-3S-Soil-082019-5-6 Sample Date 8/14/2019 8/14/2019 8/16/2019 8/20/2019 QA/QC --Field Duplicate ---- Vadose Zone Sample*N N N N Depth (ft)6-7 6-7 9.5-10.5 5-6 SDG 200-50099-2 200-50099-2 200-50148-2 200-50185-2 Lab Sample ID 200-50099-1 200-50099-2 200-50148-2 200-50185-2 Table 3+ Lab SOP (ng/kg) HFPO-DA (EPA Method 537 Mod)<250 <250 <250 <250 UJ PFMOAA <1,000 <1,000 <1,000 UJ <1,000 PFO2HxA <1,000 <1,000 <1,000 UJ <1,000 PFO3OA <1,000 <1,000 <1,000 UJ <1,000 PFO4DA <1,000 <1,000 <1,000 <1,000 PFO5DA <1,000 <1,000 <1,000 <1,000 PMPA <1,000 <1,000 <1,000 <1,000 PEPA <1,000 <1,000 <1,000 <1,000 PFESA-BP1 <1,000 <1,000 <1,000 <1,000 PFESA-BP2 <1,000 <1,000 <1,000 <1,000 Byproduct 4 <1,000 UJ <1,000 UJ <1,000 R <1,000 R Byproduct 5 <1,000 UJ <1,000 UJ <1,000 R <1,000 R Byproduct 6 <1,000 <1,000 <1,000 <1,000 NVHOS <1,000 <1,000 <1,000 <1,000 EVE Acid <1,000 <1,000 <1,000 <1,000 Hydro-EVE Acid <1,000 <1,000 <1,000 UJ <1,000 R-EVE <1,000 R <1,000 R <1,000 R <1,000 R PES <1,000 <1,000 <1,000 <1,000 PFECA B <1,000 <1,000 <1,000 UJ <1,000 PFECA-G <1,000 <1,000 <1,000 UJ <1,000 Other PFAS (ng/kg) 10:2 Fluorotelomer sulfonate <200 UJ <200 <200 <200 UJ 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)<2,000 <2,000 <2,000 <2,000 UJ 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)<2,000 <2,000 <2,000 <2,000 UJ 6:2 Fluorotelomer sulfonate <2,000 <2,000 <2,000 <2,000 UJ ADONA <210 <210 <210 <210 UJ F-53B Major <200 <200 <200 <200 UJ F-53B Minor <200 UJ <200 <200 <200 UJ NaDONA <210 <210 <210 <210 UJ N-ethyl perfluorooctane sulfonamidoacetic acid <2,000 <2,000 <2,000 <2,000 UJ N-methyl perfluorooctane sulfonamidoacetic acid <2,000 <2,000 <2,000 <2,000 UJ Perfluorobutane Sulfonic Acid <420 340 <200 UJ <200 UJ Perfluorobutanoic Acid <200 <200 <200 <200 UJ Perfluorodecane Sulfonic Acid <200 <200 <200 <200 UJ Perfluorodecanoic Acid <200 <200 <200 <200 UJ Perfluorododecane sulfonic acid (PFDoS)<200 UJ <200 <200 <200 UJ Perfluorododecanoic Acid <200 <200 <200 <200 UJ Perfluoroheptane sulfonic acid (PFHpS)<200 <200 <200 <200 UJ Perfluoroheptanoic Acid <200 <200 <200 <200 UJ Perfluorohexadecanoic acid (PFHxDA)<200 <200 <200 <200 UJ Perfluorohexane Sulfonic Acid <200 <200 <200 <200 UJ Perfluorohexanoic Acid <200 <200 <200 <200 UJ Perfluorononanesulfonic acid <200 <200 <200 <200 UJ Perfluorononanoic Acid <200 <200 <200 <200 UJ Perfluorooctadecanoic acid <200 <200 <200 <200 UJ Perfluorooctane Sulfonamide <200 <200 <200 <200 UJ Perfluoropentane sulfonic acid (PFPeS)<200 <200 <200 <200 UJ Perfluoropentanoic Acid <200 <200 <200 <200 UJ Perfluorotetradecanoic Acid <200 <200 <200 <200 UJ Perfluorotridecanoic Acid <200 <200 <200 <200 UJ Perfluoroundecanoic Acid <200 <200 <200 <200 UJ PFOA <200 <200 <200 <200 UJ PFOS <500 <500 <500 <500 UJ 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol <200 <200 <200 UJ <200 UJ 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol <200 <200 <200 UJ <200 UJ N-ethylperfluoro-1-octanesulfonamide <200 <200 <200 <200 UJ N-methyl perfluoro-1-octanesulfonamide <200 <200 <200 <200 UJ Other Percent Moisture 20.3 11.3 12.2 8.7 Percent Solids --88.7 87.8 91.3 Notes: 1. Associated equipment blank and field blank results reported in Table 7-6. 2. * Select soil samples collected from saturated zone for soil physical parameters were also inadvertently analyzed for PFAS. Bold - Analyte detected above associated reporting limit EPA - Environmental Protection Agency ft - feet ng/kg - nanograms per kilogram QA/QC - Quality assurance/ quality control R - Result rejected based on QA/QC criteria SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. -- - No data reported TR0795 Page 1 of 4 October 2019 TABLE A 7-5 OFFSITE SOIL ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Location Field Sample ID Sample Date QA/QC Vadose Zone Sample* Depth (ft) SDG Lab Sample ID Table 3+ Lab SOP (ng/kg) HFPO-DA (EPA Method 537 Mod) PFMOAA PFO2HxA PFO3OA PFO4DA PFO5DA PMPA PEPA PFESA-BP1 PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/kg) 10:2 Fluorotelomer sulfonate 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 6:2 Fluorotelomer sulfonate ADONA F-53B Major F-53B Minor NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic Acid Perfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS) Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA) Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic Acid Perfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide Other Percent Moisture Percent Solids Notes: 1. Associated equipment blank and field blank results reported in Table 7-6. 2. * Select soil samples collected from saturated zone for soil physical parameters were also inadvertently analyzed for PFAS. Bold - Analyte detected above associated reporting limit EPA - Environmental Protection Agency ft - feet ng/kg - nanograms per kilogram QA/QC - Quality assurance/ quality control R - Result rejected based on QA/QC criteria SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. -- - No data reported BLADEN-4S CUMBERLAND-1S CUMBERLAND-2S Bladen-4S-Soil-082119-5-6 CUMBERLAND-1S-6-7-20190913 Cumberland-2S-soil-5-6-0912 8/21/2019 9/13/2019 9/12/2019 ------ N N N 5-6 6-7 5-6 200-50202-2 200-50567-2 200-50537-2 200-50202-1 200-50567-2 200-50537-2 <250 <250 <250 <1,000 <1,000 <1,000 UJ <1,000 <1,000 <1,000 UJ <1,000 <1,000 <1,000 UJ <1,000 <1,000 <1,000 UJ <1,000 <1,000 <1,000 UJ <1,000 <1,000 <1,000 UJ <1,000 <1,000 <1,000 UJ <1,000 <1,000 <1,000 UJ <1,000 <1,000 <1,000 UJ <1,000 <1,000 <1,000 R <1,000 <1,000 <1,000 UJ <1,000 <1,000 <1,000 UJ <1,000 <1,000 <1,000 UJ <1,000 <1,000 <1,000 UJ <1,000 <1,000 <1,000 UJ <1,000 <1,000 <1,000 UJ <1,000 <1,000 <1,000 UJ <1,000 <1,000 <1,000 UJ <1,000 <1,000 <1,000 UJ <200 <200 <200 <2,000 <2,000 <2,000 <2,000 <2,000 <2,000 <2,000 <2,000 <2,000 <210 <210 <210 <200 <200 <200 <200 <200 <200 <210 <210 <210 <2,000 <2,000 <2,000 <2,000 <2,000 <2,000 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <500 <500 <500 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 20.1 7.1 19.3 ------ TR0795 Page 2 of 4 October 2019 TABLE A 7-5 OFFSITE SOIL ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Location Field Sample ID Sample Date QA/QC Vadose Zone Sample* Depth (ft) SDG Lab Sample ID Table 3+ Lab SOP (ng/kg) HFPO-DA (EPA Method 537 Mod) PFMOAA PFO2HxA PFO3OA PFO4DA PFO5DA PMPA PEPA PFESA-BP1 PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/kg) 10:2 Fluorotelomer sulfonate 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 6:2 Fluorotelomer sulfonate ADONA F-53B Major F-53B Minor NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic Acid Perfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS) Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA) Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic Acid Perfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide Other Percent Moisture Percent Solids Notes: 1. Associated equipment blank and field blank results reported in Table 7-6. 2. * Select soil samples collected from saturated zone for soil physical parameters were also inadvertently analyzed for PFAS. Bold - Analyte detected above associated reporting limit EPA - Environmental Protection Agency ft - feet ng/kg - nanograms per kilogram QA/QC - Quality assurance/ quality control R - Result rejected based on QA/QC criteria SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. -- - No data reported CUMBERLAND-3S CUMBERLAND-4S CUMBERLAND-4S Cumberland-3S-soil-6-7-0912 Cumberland-4S-soil-5-6-0911 Dup1-20190911 9/12/2019 9/11/2019 9/11/2019 ----Field Duplicate N N N 6-7 5-6 5-6 200-50537-2 200-50518-2 200-50518-2 200-50537-4 200-50518-1 200-50518-2 <320 320 390 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 R <1,000 R <1,000 <1,000 R <1,000 R <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 R <1,000 R <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <200 <200 <200 <2,000 <2,000 <2,000 <2,000 <2,000 <2,000 <2,000 <2,000 <2,000 <210 <210 <210 <200 <200 <200 <200 <200 <200 <210 <210 <210 <2,000 <2,000 <2,000 <2,000 <2,000 <2,000 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <500 <500 <500 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 3.7 14.3 16.1 96.3 --83.9 TR0795 Page 3 of 4 October 2019 TABLE A 7-5 OFFSITE SOIL ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Location Field Sample ID Sample Date QA/QC Vadose Zone Sample* Depth (ft) SDG Lab Sample ID Table 3+ Lab SOP (ng/kg) HFPO-DA (EPA Method 537 Mod) PFMOAA PFO2HxA PFO3OA PFO4DA PFO5DA PMPA PEPA PFESA-BP1 PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/kg) 10:2 Fluorotelomer sulfonate 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 6:2 Fluorotelomer sulfonate ADONA F-53B Major F-53B Minor NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic Acid Perfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS) Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA) Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic Acid Perfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide Other Percent Moisture Percent Solids Notes: 1. Associated equipment blank and field blank results reported in Table 7-6. 2. * Select soil samples collected from saturated zone for soil physical parameters were also inadvertently analyzed for PFAS. Bold - Analyte detected above associated reporting limit EPA - Environmental Protection Agency ft - feet ng/kg - nanograms per kilogram QA/QC - Quality assurance/ quality control R - Result rejected based on QA/QC criteria SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. -- - No data reported CUMBERLAND-5S ROBESON-1S ROBESON-1S Cumberland-5S-3-4-20190911 Robeson-1S-soil-15-16-20190909 Robeson-1S-soil-5-6-20190909 9/11/2019 9/9/2019 9/9/2019 ------ N N N 3-4 15-16 5-6 200-50518-2 200-50460-2 200-50460-2 200-50518-4 200-50460-1 200-50460-2 <250 <250 <250 <1,000 <1,000 <1,000 UJ <1,000 <1,000 <1,000 UJ <1,000 UJ <1,000 <1,000 UJ <1,000 <1,000 <1,000 UJ <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 R <1,000 R <1,000 <1,000 R <1,000 R <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 UJ <1,000 R <1,000 R <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 UJ <1,000 <1,000 <1,000 UJ <200 <200 <200 <2,000 <2,000 <2,000 <2,000 <2,000 <2,000 <2,000 <2,000 <2,000 <210 <210 <210 <200 <200 <200 <200 <200 <200 <210 <210 <210 <2,000 <2,000 <2,000 <2,000 <2,000 <2,000 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <200 <500 <500 <500 <200 <1,000 <1,000 <200 <1,000 <1,000 <200 <1,000 <1,000 <200 <1,000 <1,000 18.2 18.4 J 12.3 81.8 --87.7 TR0795 Page 4 of 4 October 2019 TABLE A 7-6 OFFSITE SOIL ANALYTICAL RESULTS - QUALITY CONTROL SAMPLES Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Location EB EQBLK FBLK FBLK Field Sample ID BLADEN-2S-SOIL- EQBLK-RINSATE BLADEN-SOIL- EQBLK-1-RINSATE BLADEN-SOIL- EQBLK-1-FIELD BLADEN-2S-SOIL- EQBLK-FIELD BLA Sample Date 8/16/2019 8/14/2019 8/14/2019 8/16/2019 QA/QC Equipment Blank Equipment Blank Field Blank Field Blank Depth (ft)-------- SDG 200-50148-2 200-50099-2 200-50099-2 200-50148-2 Lab Sample ID 200-50148-4 200-50099-3 200-50099-4 200-50148-3 Table 3+ Lab SOP (ng/L) HFPO-DA (EPA Method 537 Mod)<4 <4 <4 <4 PFMOAA <5 <5 <5 <5 PFO2HxA <2 <2 <2 <2 PFO3OA <2 <2 <2 <2 PFO4DA <2 <2 <2 <2 PFO5DA <2 <2 <2 <2 PMPA <10 <10 <10 <10 PEPA <20 <20 <20 <20 PFESA-BP1 <2 <2 <2 <2 PFESA-BP2 <2 <2 <2 <2 Byproduct 4 <2 <2 <2 <2 Byproduct 5 <2 <2 <2 <2 Byproduct 6 <2 <2 <2 <2 NVHOS <2 <2 <2 <2 EVE Acid <2 <2 <2 <2 Hydro-EVE Acid <2 <2 <2 <2 R-EVE <2 <2 <2 <2 PES <2 <2 <2 <2 PFECA B <2 <2 <2 <2 PFECA-G <2 <2 <2 <2 Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate <2 <2 <2 <2 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)<20 <20 <20 <20 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)<20 <20 <20 <20 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol <2 <2 <2 <2 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol <4 <4 <4 <4 6:2 Fluorotelomer sulfonate <20 <20 <20 <20 ADONA <2.1 <2.1 <2.1 <2.1 F-53B Major <2 <2 <2 <2 F-53B Minor <2 <2 <2 <2 NaDONA <2.1 <2.1 <2.1 <2.1 N-ethyl perfluorooctane sulfonamidoacetic acid <20 <20 <20 <20 N-ethylperfluoro-1-octanesulfonamide <2 <2 <2 <2 N-methyl perfluoro-1-octanesulfonamide <2 <2 <2 <2 N-methyl perfluorooctane sulfonamidoacetic acid <20 <20 <20 <20 Perfluorobutane Sulfonic Acid <2 <2 <2 <2 Perfluorobutanoic Acid <2 <2 <2 <2 Perfluorodecane Sulfonic Acid <2 <2 <2 <2 Perfluorodecanoic Acid <2 <2 <2 <2 Perfluorododecane sulfonic acid (PFDoS)<2 <2 <2 <2 Perfluorododecanoic Acid <2 <2 <2 2.5 Perfluoroheptane sulfonic acid (PFHpS)<2 <2 <2 <2 Perfluoroheptanoic Acid <2 <2 <2 <2 Perfluorohexadecanoic acid (PFHxDA)<2 <2 <2 <2 Perfluorohexane Sulfonic Acid <2 <2 <2 <2 Perfluorohexanoic Acid <2 <2 <2 <2 Perfluorononanesulfonic acid <2 <2 <2 <2 Perfluorononanoic Acid <2 <2 <2 <2 Perfluorooctadecanoic acid <2 <2 <2 <2 Perfluorooctane Sulfonamide <2 <2 <2 <2 Perfluoropentane sulfonic acid (PFPeS)<2 <2 <2 <2 Perfluoropentanoic Acid <2 <2 <2 <2 Perfluorotetradecanoic Acid <2 <2 <2 <2 Perfluorotridecanoic Acid <2 <2 <2 <2 Perfluoroundecanoic Acid <2 <2 <2 <2 PFOA <2 <2 <2 <2 PFOS <2 <2 <2 <2 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol -------- 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol -------- N-ethylperfluoro-1-octanesulfonamide -------- N-methyl perfluoro-1-octanesulfonamide -------- Notes: 1. Associated soil analytical results reported in Table 7-5. Bold - Analyte detected above associated reporting limit EPA - Environmental Protection Agency ft - feet ng/L - nanograms per liter QA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure < - Analyte not detected above associated reporting limit. -- - No data reported TR0795 Page 1 of 1 October 2019 TABLE A 9-1 GROUNDWATER ELEVATIONS Chemours Fayetteville Works, North Carolina Geosyntec Consultants NC P.C Area Aquifer Well ID Gauging Date Northing (ft, SPCS NAD83) Easting (ft, SPCS NAD83) Screened Interval (ft bgs) TOC Elevation (ft NAVD 88) Depth to Water (ft, from TOC) Groundwater Elevation (ft NAVD88) Onsite Black Creek Aquifer BCA-01 15-Oct-19 399,780.06 2,050,662.22 91 - 101 146.30 58.92 87.38 Onsite Black Creek Aquifer BCA-02 15-Oct-19 396,242.32 2,051,062.21 92 - 102 148.42 73.87 74.55 Onsite Black Creek Aquifer BCA-03R 15-Oct-19 398,582.23 2,049,522.22 88 - 98 150.82 49.55 101.27 Onsite Black Creek Aquifer BCA-04 15-Oct-19 395,877.67 2,047,823.11 94 - 104 150.24 28.69 121.55 Onsite Perched Zone FTA-01 15-Oct-19 397,907.50 2,049,373.61 12.0 - 22.0 150.63 17.02 133.61 Onsite Perched Zone FTA-02 15-Oct-19 397,786.43 2,049,206.27 11.5 - 21.5 150.28 18.00 132.28 Onsite Perched Zone FTA-03 15-Oct-19 397,767.09 2,049,313.86 12.0 - 22.0 151.08 18.18 132.90 Onsite Surficial Aquifer INSITU-01 15-Oct-19 401,658.20 2,046,077.31 7.0 - 17.0 118.20 6.46 111.74 Onsite Surficial Aquifer INSITU-02 15-Oct-19 401,863.46 2,049,136.62 7.0 - 17.0 113.12 DRY -- Onsite Floodplain Deposits LTW-01 15-Oct-19 399,566.17 2,052,149.95 11.0 - 26.0 53.83 16.53 37.30 Onsite Black Creek Aquifer LTW-02 15-Oct-19 398,848.36 2,052,354.37 28.0 - 38.0 52.48 10.29 42.19 Onsite Floodplain Deposits LTW-03 15-Oct-19 398,115.15 2,052,557.52 15.0 - 30.0 52.91 13.20 39.71 Onsite Floodplain Deposits LTW-04 15-Oct-19 397,280.24 2,052,583.60 12.0 - 27.0 51.86 9.31 42.55 Onsite Black Creek Aquifer LTW-05 15-Oct-19 396,430.68 2,052,738.06 29.0 - 44.0 52.01 9.66 42.35 Onsite Perched Zone MW-11 15-Oct-19 396,544.40 2,049,051.06 11.5 - 21.5 148.53 23.40 125.13 Onsite Perched Zone MW-12S 15-Oct-19 397,253.60 2,049,273.89 17.5 - 22.5 152.06 20.45 131.61 Onsite Surficial Aquifer MW-13D 15-Oct-19 397,119.02 2,049,821.12 57 - 67 148.65 44.32 104.33 Onsite Surficial Aquifer MW-14D 15-Oct-19 396,974.49 2,049,074.56 62 - 72 149.73 40.06 109.67 Onsite Surficial Aquifer MW-15DRR 15-Oct-19 398,580.71 2,049,511.75 52.5 - 62.5 150.92 47.55 103.37 Onsite Surficial Aquifer MW-16D 15-Oct-19 398,493.70 2,048,402.84 72 - 82 148.41 35.39 113.02 Onsite Surficial Aquifer MW-17D 15-Oct-19 398,401.74 2,047,366.50 57 - 67 146.12 29.03 117.09 Onsite Surficial Aquifer MW-18D 15-Oct-19 400,947.38 2,046,574.72 50 - 60 107.57 20.29 87.28 Onsite Surficial Aquifer MW-19D 15-Oct-19 401,151.33 2,048,272.99 46 - 56 139.55 51.31 88.24 Onsite Perched Zone MW-1S 15-Oct-19 397,080.31 2,049,120.73 21.0-24.0 149.93 19.24 130.69 Onsite Surficial Aquifer MW-20D 15-Oct-19 400,791.28 2,048,733.91 65 - 75 137.18 47.67 89.51 Onsite Surficial Aquifer MW-21D 15-Oct-19 399,501.70 2,047,074.96 72 - 82 151.38 45.67 105.71 Onsite Surficial Aquifer MW-22D 15-Oct-19 398,518.18 2,048,362.68 52 - 72 149.06 35.24 113.82 Onsite Perched Zone MW-23 15-Oct-19 396,237.61 2,051,063.25 9.5 - 14.5 148.34 14.41 133.93 Onsite Perched Zone MW-24 15-Oct-19 397,303.94 2,048,767.69 18.8 - 23.8 150.31 NM -- Onsite Perched Zone MW-25 15-Oct-19 396,753.37 2,050,989.82 12 - 17 147.59 14.30 133.29 Onsite Perched Zone MW-26 15-Oct-19 396,265.18 2,051,484.67 5 - 10 147.70 11.71 135.99 Onsite Perched Zone MW-27 15-Oct-19 396,010.33 2,051,472.00 10 - 15 146.83 14.84 131.99 Onsite Perched Zone MW-28 15-Oct-19 395,719.79 2,051,165.93 9 - 14 144.70 14.50 130.20 Onsite Perched Zone MW-2S 15-Oct-19 396,934.75 2,049,321.85 19.0 - 23.0 149.91 19.55 130.36 Onsite Perched Zone MW-30 15-Oct-19 397,340.79 2,050,776.09 10 - 15 147.67 14.66 133.01 Onsite Perched Zone MW-31 15-Oct-19 396,390.50 2,049,622.88 17-22 147.70 15.72 131.98 Onsite Perched Zone MW-32 15-Oct-19 396,359.58 2,049,651.79 13-18.5 147.11 14.75 132.36 Onsite Perched Zone MW-33 15-Oct-19 396,337.51 2,049,678.56 12-17 146.82 14.26 132.56 Onsite Perched Zone MW-34 15-Oct-19 396,352.90 2,049,619.09 17-22 147.97 15.78 132.19 Onsite Perched Zone MW-35 15-Oct-19 396,332.94 2,049,631.16 14-19 147.54 15.25 132.29 Onsite Perched Zone MW-36 15-Oct-19 396,320.09 2,049,651.17 12-17 147.89 15.81 132.08 Onsite Perched Zone MW-7S 15-Oct-19 397,444.52 2,049,809.73 NA 147.47 11.36 136.11 Onsite Perched Zone MW-8S 15-Oct-19 397,096.48 2,049,867.77 NA 146.48 DRY -- Onsite Perched Zone MW-9S 15-Oct-19 396,760.16 2,049,734.30 17.5-22.5 154.39 21.58 132.81 Onsite Perched Zone NAF-01 15-Oct-19 398,349.77 2,050,338.81 5.0-15.0 149.66 10.25 139.41 Onsite Perched Zone NAF-02 15-Oct-19 398,662.80 2,050,640.86 5.0-15.0 150.31 10.88 139.43 Onsite Perched Zone NAF-03 15-Oct-19 398,580.65 2,050,755.43 5.0-15.0 150.44 NM -- Onsite Perched Zone NAF-04 15-Oct-19 398,447.00 2,050,718.95 5.0-15.0 148.10 8.11 139.99 Onsite Perched Zone NAF-05A 15-Oct-19 398,641.22 2,051,024.85 NA NA exclusion zone -- Onsite Surficial Aquifer NAF-05B 15-Oct-19 398,660.23 2,051,021.81 NA NA exclusion zone -- Onsite Perched Zone NAF-06 15-Oct-19 398,809.66 2,050,911.91 2.75 - 12.75 146.43 11.95 134.48 Onsite Perched Zone NAF-07 15-Oct-19 398,899.33 2,050,616.50 5.5 - 15.5 149.69 10.77 138.92 Onsite Perched Zone NAF-08A 15-Oct-19 398,097.99 2,050,886.62 5.0 - 15.0 148.82 10.28 138.54 Onsite Surficial Aquifer NAF-08B 15-Oct-19 398,095.64 2,050,879.94 43.5 - 53.5 148.86 52.87 95.99 Onsite Perched Zone NAF-09 15-Oct-19 397,711.09 2,050,806.52 7.0 - 17.0 149.29 12.91 136.38 Onsite Perched Zone NAF-10 15-Oct-19 397,612.57 2,050,423.15 8.25 - 18.25 150.00 14.24 135.76 Onsite Perched Zone NAF-11A 15-Oct-19 398,909.29 2,050,999.92 2.5 - 7.5 140.59 10.01 130.58 Onsite Surficial Aquifer NAF-11B 15-Oct-19 398,911.13 2,050,995.88 33.5 - 43.5 140.74 46.50 94.24 Onsite Perched Zone NAF-12 15-Oct-19 398,270.56 2,050,777.49 18 - 23 145.93 NM -- Onsite Perched Zone NAF-13 15-Oct-19 398,370.49 2,051,260.72 11 - 16 152.29 17.35 134.94 Onsite Black Creek Aquifer PIW-10DR 15-Oct-19 395,093.99 2,052,297.30 53 - 58 75.91 14.63 61.28 Onsite Surficial Aquifer PIW-10S 15-Oct-19 395,104.67 2,052,297.04 7 - 17 76.45 18.79 57.66 Onsite Surficial Aquifer PIW-1D 15-Oct-19 400,547.77 2,051,801.42 24.5 - 29.5 52.33 19.52 32.81 Onsite Floodplain Deposits PIW-1S 15-Oct-19 400,540.61 2,051,792.59 7.8 - 17.8 54.20 21.61 32.59 Onsite Black Creek Aquifer PIW-2D 15-Oct-19 399,922.75 2,051,317.64 40 - 50 100.85 36.30 64.55 Onsite Black Creek Aquifer PIW-3D 15-Oct-19 399,711.75 2,052,088.80 19 - 24 53.32 17.51 35.80 Onsite Black Creek Aquifer PIW-4D 15-Oct-19 398,817.36 2,052,102.82 32.3 - 37.3 53.04 11.36 41.68 Onsite Surficial Aquifer PIW-5S 15-Oct-19 398,520.38 2,051,951.26 9.8 - 19.8 75.19 14.73 60.46 Onsite Floodplain Deposits PIW-6S 15-Oct-19 398,118.14 2,052,540.57 18 - 28 53.36 14.76 38.60 Onsite Black Creek Aquifer PIW-7D 15-Oct-19 396,787.69 2,052,595.37 29 - 34 48.60 5.91 42.69 Onsite Floodplain Deposits PIW-7S 15-Oct-19 396,787.00 2,052,589.49 7 - 17 48.39 5.88 42.51 Onsite Black Creek Aquifer PIW-8D 15-Oct-19 396,403.38 2,052,682.02 35.5 - 45.5 48.52 7.41 41.11 Onsite Black Creek Aquifer PIW-9D 15-Oct-19 396,155.97 2,052,250.91 40 - 45 79.53 37.45 42.08 Onsite Surficial Aquifer PIW-9S 15-Oct-19 396,148.11 2,052,251.10 24.8 - 29.8 79.53 30.47 49.06 Onsite Perched Zone PW-01 15-Oct-19 399,064.80 2,049,654.30 11 - 21 149.55 16.00 133.55 Onsite Surficial Aquifer PW-02 15-Oct-19 399,779.06 2,050,649.47 50 - 60 146.43 56.38 90.05 Onsite Surficial Aquifer PW-03 15-Oct-19 397,339.81 2,050,765.32 35 - 45 147.97 42.40 105.57 Onsite Surficial Aquifer PW-04 15-Oct-19 394,659.55 2,050,940.66 17 - 27 97.75 27.85 69.90 Onsite Surficial Aquifer PW-05 15-Oct-19 395,873.10 2,047,812.93 65 - 75 150.34 29.09 121.25 Onsite Surficial Aquifer PW-06 15-Oct-19 392,868.00 2,045,288.77 19 - 29 147.69 19.50 128.19 Onsite Surficial Aquifer PW-07 15-Oct-19 390,847.71 2,049,258.26 28 - 38 148.16 39.49 108.67 Onsite Black Creek Aquifer PW-09 15-Oct-19 401,997.39 2,048,980.54 44 - 54 77.49 25.25 52.24 Onsite Black Creek Aquifer PW-10R 15-Oct-19 398,516.12 2,051,936.59 57 - 67 75.90 27.76 48.15 Onsite Black Creek Aquifer PW-11 15-Oct-19 394,354.36 2,052,226.72 53 - 63 73.26 33.66 39.60 Onsite Black Creek Aquifer PW-12 15-Oct-19 399,500.45 2,047,063.51 109 - 119 150.61 57.96 92.65 Onsite Black Creek Aquifer PW-13 15-Oct-19 397,584.26 2,048,029.18 120 - 130 149.36 29.57 119.79 Onsite Black Creek Aquifer PW-14 15-Oct-19 397,325.65 2,050,766.36 136 - 146 147.97 61.11 86.86 Onsite Black Creek Aquifer PW-15R 15-Oct-19 398,900.88 2,051,011.75 110 - 120 136.14 59.18 76.96 Onsite Perched Zone PZ-11 15-Oct-19 398,646.25 2,049,820.94 15 - 20 151.03 14.01 137.02 Onsite Perched Zone PZ-12 15-Oct-19 399,094.96 2,048,981.78 15.1 - 20.1 150.91 20.17 130.74 Onsite Perched Zone PZ-13 15-Oct-19 397,708.07 2,050,991.73 7.1 - 12.1 149.20 12.47 136.73 Onsite Perched Zone PZ-14 15-Oct-19 397,589.92 2,050,618.27 9.0 - 14.0 148.38 16.26 132.12 Onsite Perched Zone PZ-15 15-Oct-19 396,805.09 2,050,112.02 10.2 - 15.2 148.79 13.67 135.12 Onsite Perched Zone PZ-17 15-Oct-19 396,614.82 2,048,872.69 21.1 - 26.1 150.08 28.27 121.81 Onsite Perched Zone PZ-19R 15-Oct-19 397,998.66 2,049,919.52 16 - 21 150.05 14.51 135.54 Onsite Perched Zone PZ-20R 15-Oct-19 398,185.81 2,049,784.60 15 - 20 151.29 15.82 135.47 Onsite Perched Zone PZ-21R 15-Oct-19 398,445.16 2,049,883.13 17 - 22 150.67 14.45 136.22 Onsite Black Creek Aquifer PZ-22 15-Oct-19 397,272.80 2,052,584.04 36.0 - 46.0 51.81 7.75 44.06 TR0795 Page 1 of 4 October 2019 TABLE A 9-1 GROUNDWATER ELEVATIONS Chemours Fayetteville Works, North Carolina Geosyntec Consultants NC P.C Area Aquifer Well ID Gauging Date Northing (ft, SPCS NAD83) Easting (ft, SPCS NAD83) Screened Interval (ft bgs) TOC Elevation (ft NAVD 88) Depth to Water (ft, from TOC) Groundwater Elevation (ft NAVD88) Onsite Perched Zone PZ-24 15-Oct-19 396,117.94 2,050,744.07 11 - 16 147.53 14.17 133.36 Onsite Perched Zone PZ-25 15-Oct-19 396,753.94 2,050,991.05 14 - 19 147.59 21.35 126.24 Onsite Perched Zone PZ-26 15-Oct-19 396,059.78 2,050,382.35 11 - 16 147.70 12.90 134.80 Onsite Perched Zone PZ-27 15-Oct-19 395,922.11 2,050,376.76 12 - 17 147.17 13.20 133.97 Onsite Perched Zone PZ-28 15-Oct-19 396,304.55 2,049,933.79 13 - 18 148.64 13.50 135.14 Onsite Perched Zone PZ-29 15-Oct-19 396,371.49 2,049,768.94 13 - 18 147.74 14.45 133.29 Onsite Perched Zone PZ-31 15-Oct-19 396,428.73 2,049,594.36 14 - 19 148.00 17.30 130.70 Onsite Perched Zone PZ-32 15-Oct-19 396,418.47 2,049,713.79 13 - 18 148.47 15.31 133.16 Onsite Perched Zone PZ-33 15-Oct-19 396,308.92 2,049,707.66 12.5 - 17.5 146.72 14.00 132.72 Onsite Perched Zone PZ-34 15-Oct-19 396,292.05 2,049,595.04 13.5 - 18.5 147.70 15.81 131.88 Onsite Perched Zone PZ-35 15-Oct-19 398,232.64 2,050,020.49 13 - 18 150.43 14.11 136.32 Onsite Surficial Aquifer SMW-01 15-Oct-19 395,295.75 2,043,679.19 5.0 - 15.0 136.81 13.30 123.51 Onsite Perched Zone SMW-02 15-Oct-19 399,983.75 2,050,654.77 5.0 - 20.0 147.93 15.98 131.95 Onsite Surficial Aquifer SMW-02B 15-Oct-19 399,983.48 2,050,660.48 43.0 - 53.0 145.21 DRY -- Onsite Perched Zone SMW-03 15-Oct-19 399,778.25 2,049,445.96 10.0 - 20.0 151.09 DRY -- Onsite Black Creek Aquifer SMW-03B 15-Oct-19 399,785.75 2,049,421.54 72 - 82 150.43 57.03 93.40 Onsite Perched Zone SMW-04A 15-Oct-19 399,668.71 2,048,387.57 19.5 - 34.5 148.09 37.11 110.98 Onsite Surficial Aquifer SMW-04B 15-Oct-19 399,667.12 2,048,390.30 43.0 - 53.0 148.37 45.43 102.94 Onsite Perched Zone SMW-05 15-Oct-19 399,334.07 2,048,557.33 10.0 - 20.0 148.10 23.05 125.05 Onsite Surficial Aquifer SMW-05P 15-Oct-19 399,338.61 2,048,559.26 45.0 - 60.0 149.32 44.01 105.31 Onsite Perched Zone SMW-06 15-Oct-19 399,172.35 2,048,759.48 12.0 - 22.0 150.97 24.93 126.04 Onsite Surficial Aquifer SMW-06B 15-Oct-19 399,144.74 2,048,764.94 58 - 68 150.32 47.17 103.15 Onsite Perched Zone SMW-07 15-Oct-19 398,932.91 2,048,611.16 13.0 - 23.0 147.64 19.66 127.98 Onsite Perched Zone SMW-08 15-Oct-19 399,064.97 2,048,468.78 21.0 - 31.0 151.02 DRY -- Onsite Surficial Aquifer SMW-08B 15-Oct-19 399,058.33 2,048,478.84 58 - 68 148.81 40.52 108.29 Onsite Surficial Aquifer SMW-09 15-Oct-19 401,076.89 2,050,017.41 52 - 62 141.43 56.23 85.20 Onsite Black Creek Aquifer SMW-10 15-Oct-19 402,307.31 2,047,923.84 39 - 49 76.26 29.57 46.69 Onsite Surficial Aquifer SMW-11 15-Oct-19 401,996.15 2,048,975.38 13 - 23 71.95 14.08 57.87 Onsite Black Creek Aquifer SMW-12 15-Oct-19 401,314.20 2,051,007.22 88 - 98 118.22 84.78 33.44 Offsite Black Creek Aquifer Bladen-1D 15-Oct-19 387,519.56 2,050,248.83 37 - 47 81.52 19.72 61.80 Offsite Surficial Aquifer Bladen-1S 15-Oct-19 387,516.28 2,050,234.78 5 - 10 81.31 10.14 71.17 Offsite Black Creek Aquifer Bladen-2D 15-Oct-19 368,824.41 2,042,879.78 70 - 75 142.85 20.50 122.35 Offsite Surficial Aquifer Bladen-2S 15-Oct-19 368,818.78 2,042,884.35 10 - 20 142.62 6.99 135.63 Offsite Black Creek Aquifer Bladen-3D 15-Oct-19 396,854.29 2,059,007.99 33.75 - 43.75 79.09 10.32 68.77 Offsite Surficial Aquifer Bladen-3S 15-Oct-19 396,859.62 2,059,014.36 5 - 15 78.84 9.51 69.33 Offsite Black Creek Aquifer Bladen-4D 15-Oct-19 363,252.43 2,087,638.29 46.75 - 51.75 64.23 1.43 62.80 Offsite Surficial Aquifer Bladen-4S 15-Oct-19 363,260.51 2,087,638.88 4.75 - 14.75 64.26 5.84 58.42 Offsite Black Creek Aquifer Cumberland-1D 15-Oct-19 431,477.66 2,011,002.07 40 - 50 179.18 7.27 171.91 Offsite Surficial Aquifer Cumberland-1S 15-Oct-19 431,477.66 2,011,002.07 15 - 25 179.41 7.16 172.25 Offsite Black Creek Aquifer Cumberland-2D 15-Oct-19 450,054.48 2,074,001.35 47 - 57 133.79 5.68 128.11 Offsite Surficial Aquifer Cumberland-2S 15-Oct-19 450,054.48 2,074,001.35 7 - 17 133.61 5.91 127.70 Offsite Black Creek Aquifer Cumberland-3D 15-Oct-19 423,131.53 2,060,380.35 22 - 27 83.34 8.17 75.17 Offsite Surficial Aquifer Cumberland-3S 15-Oct-19 423,131.53 2,060,380.35 9 - 14 83.62 8.73 74.89 Offsite Black Creek Aquifer Cumberland-4D 15-Oct-19 413,160.26 2,078,233.75 57 - 67 123.79 13.82 109.97 Offsite Surficial Aquifer Cumberland-4S 15-Oct-19 413,160.26 2,078,233.75 10 - 20 123.93 7.51 116.42 Offsite Black Creek Aquifer Cumberland-5D 15-Oct-19 405,673.82 2,138,069.54 52 - 57 106.67 8.38 98.29 Offsite Surficial Aquifer Cumberland-5S 15-Oct-19 405,673.82 2,138,069.54 14 - 24 106.65 4.77 101.88 Offsite Black Creek Aquifer Robeson-1D 15-Oct-19 381,338.72 2,020,239.81 42.75 - 52.75 160.93 13.74 147.19 Offsite Surficial Aquifer Robeson-1S 15-Oct-19 381,338.72 2,020,239.81 17 - 27 161.22 18.15 143.07 Notes: 1. Area - refers to location of well within site property boundary (“Onsite”) and outside property boundary (“Offsite”) 2. Aquifer - refers to primary aquifer unit well screen is estimated to be screened within 3. DRY - Water levels could not be calculated because well was dry. 4. NM - Not Measured. Water levels were not measured because well location was not accessible at the time of measurement due to well located within the "blast zone" or well was pumping (NAF-03, NAF-12 and MW-24) 5. -- - Groundwater elevation data not available because well was either dry, not accessible or was pumping at the time of measurement 6. NAF-05A and NAF-05B located in exclusion zone - Well location not safely accessible at the time of measurement. 7. Water levels were measured during a single synoptic event over a continuous 24-hour period. 8. Survey completed by Freeland-Clinkscales & Associates of NC. 9. Northing and Easting provided in North Carolina State Plane System (zone 3200), North American Datum 1983. 10. Vertical datum is North American Vertical Datum of 1988. ft bgs - feet below ground surface NAVD88 - North American Vertical Datum of 1988 TOC - Top of Casing ft SPCS NAD83 - feet State Plane Coordinate System, North American Datum of 1983 TR0795 Page 2 of 4 October 2019 TABLE A 9-2 VERTICAL GRADIENTSChemours Fayetteville Works, North CarolinaGeosyntec Consultants NC P.C.AquiferWell Pair IDWell ID Gauging DateNorthing (NAD 83)Easting(NAD 83)Screened Interval (ft bgs)Ground Elevation (ft NAVD88)TOC Elevation (ft NAVD88)Shallow/DeepGroundwater Elevation(ft-NAVD88)Vertical Gradient(feet/feet)DirectionPerched ZoneNAF-11A 10/15/2019 398,909.29 2,050,999.92 2.5 - 7.5 137.55 140.59 s130.58Surficial AquiferNAF-11B 10/15/2019 398,911.13 2,050,995.88 33.5 - 43.5 137.55 140.74 d94.24Perched ZoneSMW-06 10/15/2019 399,172.35 2,048,759.48 12.0 - 22.0 147.92 150.97 s126.04Surficial AquiferSMW-06B 10/15/2019 399,144.74 2,048,764.94 58.0 - 68.0 NA150.32 d103.15Perched ZoneSMW-04A 10/15/2019 399,668.71 2,048,387.57 19.5 - 34.5 145.46 148.09 s110.98Surficial AquiferSMW-04B 10/15/2019 399,667.12 2,048,390.30 43.0 - 53.0 145.18 148.37 d102.94Perched ZoneSMW-05 10/15/2019 399,334.07 2,048,557.33 10.0 - 20.0 144.17 148.10 s125.05Surficial AquiferSMW-05P 10/15/2019 399,338.61 2,048,559.26 45.0 - 60.0 146.06 149.32 d105.31Perched ZoneMW-30 10/15/2019 397,340.79 2,050,776.09 10 - 15 144.95 147.67 s133.01Surficial AquiferPW-03 10/15/2019 397,339.81 2,050,765.32 35 - 45 144.97 147.97 d105.57Perched ZoneNAF-08A 10/15/2019 398,097.99 2,050,886.62 5.0 - 15.0 145.54 148.82 s138.54Surficial AquiferNAF-08B 10/15/2019 398,095.64 2,050,879.94 43.5 - 53.5 145.62 148.86 d95.99Perched ZoneMW-23 10/15/2019 396,233.43 2,051,061.52 9.5 - 14.5 145.17 148.34 s133.93Black Creek AquiferBCA-02 10/15/2019 396,242.32 2,051,062.21 92.0 - 102.0 145.20 148.42 d74.55Surficial AquiferPIW-9S 10/15/2019 396,148.11 2,052,251.10 24.75 - 29.75 76.80 79.53s49.06Black Creek AquiferPIW-9D 10/15/2019 396,155.97 2,052,250.91 40.0 - 45.0 76.75 79.53d42.08Surficial AquiferPIW-10S 10/15/2019 395,104.67 2,052,297.04 7.0 - 17.0 73.30 76.45s57.66Black Creek AquiferPIW-10DR 10/15/2019 395,098.79 2,052,293.84 53.0 - 58.0 73.34 75.91d61.28Surficial AquiferPIW-5S 10/15/2019 398,520.38 2,051,951.26 9.8 - 19.8 72.68 75.19s60.46Black Creek AquiferPW-10R 10/15/2019 398,516.12 2,051,936.59 57 - 67 73.28 75.90d48.15Surficial AquiferPW-02 10/15/2019 399,779.06 2,050,649.47 50 - 60 143.76 146.43 s90.05Black Creek AquiferBCA-01 10/15/2019 399,780.06 2,050,662.22 91 - 101 143.26 146.30 d87.38Surficial AquiferSMW-11 10/15/2019 401,996.15 2,048,975.38 13 - 23 69.04 71.95s57.87Black Creek AquiferPW-09 10/15/2019 401,997.39 2,048,980.54 44 - 54 74.76 77.49d52.24Surficial AquiferMW-21D 10/15/2019 399,501.70 2,047,074.96 72 - 82 148.05 151.38 s105.71Black Creek AquiferPW-12 10/15/2019 399,500.45 2,047,063.51 109 - 119 148.31 150.61 d92.65Surficial AquiferPW-05 10/15/2019 395,873.10 2,047,812.93 65 - 75 147.16 150.34 s121.25Black Creek AquiferBCA-04 10/15/2019 395,877.67 2,047,823.11 94 - 104 147.07 150.24 d121.55Surficial AquiferPW-03 10/15/2019 397,339.81 2,050,765.32 35 - 45 144.97 147.97 s105.57Black Creek AquiferPW-14 10/15/2019 397,325.65 2,050,766.36 136 - 146 145.13 147.97 d86.86FloodplainPIW-1S 10/15/2019 400,540.61 2,051,792.59 7.8 - 17.8 50.78 54.20s32.59Surficial AquiferPIW-1D 10/15/2019 400,547.77 2,051,801.42 24.5 - 29.5 49.53 52.33d32.81FloodplainPIW-7S 10/15/2019 396,787.00 2,052,589.49 7.0 - 17.0 45.81 48.39s42.51Black Creek AquiferPIW-7D 10/15/2019 396,787.69 2,052,595.37 29.0 - 34.0 45.78 48.60d42.69FloodplainLTW-04 10/15/2019 397,280.24 2,052,583.60 12.0 - 27.0 49.34 51.86s42.55Black Creek AquiferPZ-22 10/15/2019 397,272.80 2,052,584.04 36.0 - 46.0 49.03 51.81d44.06Perched ZoneMW-25 10/15/2019 396,753.37 2,050,989.82 12.0 - 17.0 145.00 147.59 s133.29Perched ZonePZ-25 10/15/2019 396,753.94 2,050,991.05 14.0 - 19.0 145.00 147.59 s126.24Old Outfall 002Old Outfall 002 6/7/2019 ------40.25--s40.63Black Creek AquiferPW-11 10/15/2019 394,354.00 2,052,227.00 53.0 - 63.0 70.19 73.26d39.60Downward(SMW-05 to SMW-05P)Downward(SMW-04A to SMW-04B)Downward(SMW-06 to SMW-06B)Downward(NAF-11A to NAF-11B)Downward(PIW-5S to PW-10R)Upward(PIW-10S to PIW-10DR)Downward(PIW-9S to PIW-9D)Downward(MW-23 to BCA-02)Downward(NAF-08A to NAF-08B)Downward(MW-30 to PW-03)1.03Downward(Old Outfall 002 to PW-11)Downward(MW-25 to PZ-25)Upward(LTW-04 to PZ-22)-0.22Upward(PIW-1S to PIW-1D)-0.18-1.517.05Upward(PIW-7S to PIW-7D)Perched / SurficialPerched / Black CreekSurficial / Black CreekFloodplain / SurficialFloodplain/ Black CreekOtherWP19WP20WP17WP18WP15WP16Downward(PW-03 to PW-14)WP13WP14Upward(BCA-04 to PW-05)Downward(MW-21D to PW-12)13.06-0.3018.71WP12Downward(SMW-11 to PW-09)Downward(PW-02 to BCA-01)WP10WP1112.312.675.63WP9-3.62WP86.98WP6WP742.5559.38WP527.44WP48.0419.74WP236.3422.89WP1WP3TR0795Page 1 of 2October 2019 TABLE A 9-2 VERTICAL GRADIENTSChemours Fayetteville Works, North CarolinaGeosyntec Consultants NC P.C.AquiferWell Pair IDWell ID Gauging DateNorthing (NAD 83)Easting(NAD 83)Screened Interval (ft bgs)Ground Elevation (ft NAVD88)TOC Elevation (ft NAVD88)Shallow/DeepGroundwater Elevation(ft-NAVD88)Vertical Gradient(feet/feet)DirectionSurficial AquiferBladen-1S 10/15/2019 387,516.28 2,050,234.78 5 - 1081.57 81.31s71.17Black Creek AquiferBladen-1D 10/15/2019 387,519.56 2,050,248.83 37 - 47 81.72 81.52d61.80Surficial AquiferBladen-2S 10/15/2019 368,818.78 2,042,884.35 10 - 20 143.01 142.62 s135.63Black Creek AquiferBladen-2D 10/15/2019 368,824.41 2,042,879.78 70 - 75 143.11 142.85 d122.35Surficial AquiferBladen-3S 10/15/2019 396,859.62 2,059,014.36 5 - 1579.40 78.84s69.33Black Creek AquiferBladen-3D 10/15/2019 396,854.29 2,059,007.99 33.75 - 43.75 79.59 79.09d68.77Surficial AquiferBladen-4S 10/15/2019 363,260.51 2,087,638.88 4.75 - 14.75 64.65 64.26s58.42Black Creek AquiferBladen-4D 10/15/2019 363,252.43 2,087,638.29 46.75 - 51.75 64.67 64.23d62.80Surficial AquiferCumberland-1S 10/15/2019 431,477.66 2,011,002.07 15 - 25 179.70 179.41 s172.25Black Creek AquiferCumberland-1D 10/15/2019 431,477.66 2,011,002.07 40 - 50 179.58 179.18 d171.91Surficial AquiferCumberland-2S 10/15/2019 450,054.48 2,074,001.35 7 - 17 133.87 133.61 s127.70Black Creek AquiferCumberland-2D 10/15/2019 450,054.48 2,074,001.35 47 - 57 134.06 133.79 d128.11Surficial AquiferCumberland-3S 10/15/2019 423,131.53 2,060,380.35 9 - 1483.87 83.62s74.89Black Creek AquiferCumberland-3D 10/15/2019 423,131.53 2,060,380.35 22 - 27 83.59 83.34d75.17Surficial AquiferCumberland-4S 10/15/2019 413,160.26 2,078,233.75 10 - 20 124.15 123.93 s116.42Black Creek AquiferCumberland-4D 10/15/2019 413,160.26 2,078,233.75 57 - 67 124.09 123.79 d109.97Surficial AquiferCumberland-5S 10/15/2019 405,673.82 2,138,069.54 14 - 24 107.00 106.65 s101.88Black Creek AquiferCumberland-5D 10/15/2019 405,673.82 2,138,069.54 52 - 57 107.02 106.67 d98.29Surficial AquiferRobeson-1S 10/15/2019 381,338.72 2,020,239.81 17 - 27 161.51 161.22 s143.07Black Creek AquiferRobeson-1D 10/15/2019 381,338.72 2,020,239.81 42.75 - 52.75 161.23 160.93 d147.19Notes:1. Well pairs only include locations where depth to water level in both wells were synoptically measured in October 2019.2. Calculated negative vertical gradient values represent potential for upward flow and positive vertical gradient values represent potential for downward flows.3. "s" and "d" represent shallower and deeper well screens between the wells in each pair.4. Direction indicates potential for upward or downward groundwater flow in each well pair.5. Water column depth from Old Outfall 002 channel bottom presented. Measurements collected during volumetric flow measurements presented in the Seeps and Creeks Investigation Report (Geosyntec, 2019).NAD83 - North American Datum of 1983; horizontal control datumNAVD88 - North American Vertical Datum of 1988; vertical control datum established in 1991ft bgs - feet below ground surfaceTOC - top of casing-- data not availableDownward(Bladen-1S to Bladen-1D)WP30-4.12Upward(Robeson-1D to Robeson-1S)WP293.59Downward(Cumberland-5S to Cumberland-5D)WP286.45Downward(Cumberland-4S to Cumberland-4D)WP27-0.41-0.28WP25-4.380.34Downward(Bladen-2S to Bladen-2D)WP22OffsiteUpward(Cumberland-3D to Cumberland-3S)Upward(Cumberland-2D to Cumberland-2S)Upward(Bladen-4D to Bladen-4S)WP21Downward(Cumberland-1S to Cumberland-1D)WP24WP26WP230.56Downward(Bladen-3S to Bladen-3D)9.3713.28TR0795Page 2 of 2October 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Black Creek Aquifer Black Creek Aquifer Black Creek Aquifer Black Creek Aquifer Location ID BCA-01 BCA-02 BCA-02 BCA-03RField Sample ID GW0619-BCA-01 GW0619-BCA-02-D GW0619-BCA-02 BCA-03R-091219 Sample Date 7/8/2019 7/9/2019 7/9/2019 9/12/2019 QA/QC --Field Duplicate ---- Sample Matrix LIQUID LIQUID LIQUID LiquidSDG 320-52171-1 320-52149-1 320-52149-1 320-54314-1 Lab Sample ID 320-52171-4 320-52149-6 320-52149-5 320-54314-1 Table 3+ Lab SOP (ng/L) Hfpo Dimer Acid 9,700 12,000 J 18,000 J 12,000 PFMOAA 70,000 110,000 120,000 330,000 PFO2HxA 22,000 26,000 29,000 69,000 PFO3OA 3,000 8,600 8,600 15,000 PFO4DA 79 3,300 4,000 1,200 PFO5DA <34 610 590 <170 PMPA 5,900 6,700 7,300 29,000 PEPA 1,400 2,300 2,500 7,100 PFESA-BP1 <27 60 80 200 PFESA-BP2 <30 420 520 160 Byproduct 4 300 720 810 2,000 Byproduct 5 1,100 2,000 2,100 19,000 Byproduct 6 <15 18 19 <77 NVHOS 570 1,000 1,100 2,400 EVE Acid <24 24 27 <120 Hydro-EVE Acid <28 1,400 1,600 200 R-EVE 230 500 560 730 PES <46 <46 <46 <230 PFECA B <60 <60 <60 <300 PFECA-G <41 <41 <41 <200 Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate ------<2 11Cl-PF3OUdS ------<2 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)<20 <20 <20 <20 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)<20 <20 <20 <20 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol ------<2 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol ------<4 6:2 Fluorotelomer sulfonate <20 <20 <20 <20 9Cl-PF3ONS ------<2 ADONA ------<2.1 NaDONA ------<2.1 N-ethyl perfluorooctane sulfonamidoacetic acid <20 <20 <20 <20 N-ethylperfluoro-1-octanesulfonamide ------<2 N-methyl perfluoro-1-octanesulfonamide ------<2 N-methyl perfluorooctane sulfonamidoacetic acid <20 <20 <20 <20 Perfluorobutane Sulfonic Acid <2 2.9 2.8 <2Perfluorobutanoic Acid 70 120 120 160 Perfluorodecane Sulfonic Acid <2 <2 <2 <2 Perfluorodecanoic Acid <2 <2 <2 <2 Perfluorododecane sulfonic acid (PFDoS)<2 <2 <2 <2Perfluorododecanoic Acid <2 3.8 <2 <2 Perfluoroheptane sulfonic acid (PFHpS)<2 <2 <2 <2 Perfluoroheptanoic Acid 8.7 46 46 72 Perfluorohexadecanoic acid (PFHxDA)------<2Perfluorohexane Sulfonic Acid <2 5.2 5 <2 Perfluorohexanoic Acid 7.9 24 25 24 Perfluorononanesulfonic acid <2 <2 <2 <2 Perfluorononanoic Acid <2 11 10 <2Perfluorooctadecanoic acid <2 <2 <2 UJ <2 Perfluorooctane Sulfonamide <2 <2 <2 <2 Perfluoropentane sulfonic acid (PFPeS)<2 <2 <2 <2 Perfluoropentanoic Acid 280 170 170 600 Perfluorotetradecanoic Acid <2 <2 <2 <2 Perfluorotridecanoic Acid <2 2 <2 <2 Perfluoroundecanoic Acid <2 <2 <2 <2 PFOA <2 32 30 5.8 PFOS <2 4.2 3.4 <2 Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. TR0795 Page 1 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. Black Creek Aquifer Perched Zone Perched Zone Perched Zone Surficial Aquifer BCA-04 FTA-01 FTA-02 FTA-03 INSITU-01GW0619-BCA-04 GW0619-FTA-01 GW0619-FTA-02 GW0619-FTA-03 GW0619-INSITU-01 7/9/2019 6/27/2019 6/27/2019 6/27/2019 6/20/2019 ---------- LIQUID LIQUID LIQUID LIQUID LIQUID320-52149-1 320-51903-1 320-51903-1 320-51903-1 320-51662-1 320-52149-4 320-51903-3 320-51903-1 320-51903-2 320-51662-3 6.9 520 22,000 13,000 580 <5 <210 UJ 11,000 J 3,200 J 210 J<2 390 J 8,800 J 6,500 J 460 J <2 58 J 2,000 J 780 J 36 J <2 <79 UJ 1,700 J 820 J 5.1 J <2 77 J 2,400 J 1,200 J <5 UJ201,500 J 6,400 J 6,500 J 800 J <20 290 J 2,400 J 2,200 J 230 J <2 <27 UJ 1,300 J 550 J <2 UJ <2 32 J 3,500 J 610 J 17 J<2 <160 UJ 1,500 J 1,400 J 38 J <2 <58 UJ 950 J 1,100 J <2 UJ <2 <15 UJ 19 J <15 UJ <2 UJ <2 <54 UJ 450 J 170 J 5 J <2 <24 UJ 24,000 J 97 J <2 UJ <2 <28 UJ 1,100 J 150 J <2 UJ <2 <70 UJ 560 J 2,100 J 25 J <2 <46 UJ <46 UJ <46 UJ <2 UJ <2 <60 UJ <60 UJ <60 UJ <2 UJ <2 <41 UJ <41 UJ <41 UJ <2 UJ ---------- ---------- <20 <20 <20 <20 -- <20 <20 <20 <20 -- --------<2 UJ --------<2 UJ <20 <20 120 <20 -- ---------- ---------- ---------- <20 <20 <20 <20 -- --------<2 UJ --------<2 UJ <20 <20 <20 <20 -- <2 <2 2.5 <2 <2<2 11 140 68 -- <2 <2 <2 <2 -- <2 <2 2.9 2.2 <2 <2 <2 <2 <2 --<2 <2 <2 <2 <2 <2 <2 2.1 <2 -- <2 5.1 87 21 <2 ----------<2 2.1 21 5.1 <2 <2 4.5 110 15 4.1 <2 <2 <2 <2 -- <2 <2 17 11 <2<2 <2 <2 <2 -- <2 <2 <2 <2 -- <2 <2 2.1 <2 -- <2 15 270 87 11 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 6.7 83 51 <2 <2 3.8 24 9.9 <2 TR0795 Page 2 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. Floodplain Deposits Black Creek Aquifer Floodplain Deposits Floodplain Deposits LTW-01 LTW-02 LTW-03 LTW-04GW0619-LTW-01 GW0619-LTW-02 GW0619-LTW-03 GW0619-LTW-04 7/17/2019 7/17/2019 7/17/2019 7/17/2019 -------- LIQUID LIQUID LIQUID LIQUID320-52454-1 320-52454-1 320-52454-1 320-52454-1 320-52454-1 320-52454-2 320-52454-4 320-52454-6 19,000 9,500 12,000 16,000 45,000 38,000 150,000 96,00030,000 16,000 34,000 31,000 6,100 3,000 4,900 5,400 1,200 250 160 620 210 <34 <34 3623,000 6,500 9,300 19,000 8,300 2,100 2,400 7,100 <27 <27 <27 <27 260 30 33 1601,200 490 J 600 2,0009701,200 2,600 4,300 <15 <15 <15 <15 490 370 1,000 1,600 <24 <24 <24 <241404542510 720 420 480 2,300 <46 <46 <46 <46 <60 <60 <60 <60 <41 <41 <41 <41 -------- -------- <20 <20 <20 <20 <47 <45 <46 <46 -------- -------- <20 <20 <20 <20 -------- -------- -------- <20 <20 <20 <20 -------- -------- <28 <27 <27 <27 2.4 <2 <2 <217071140440 <2.9 <2.7 <2.8 <2.8 <2.8 <2.7 <2.7 <2.7 <4 <3.9 <4 <4<4.9 <4.7 <4.9 <4.9 <2 <2 <2 <2 43 13 19 68 --------4.6 <2 <2 2.9 28 10 15 44 <2 <2 <2 <2 <2.4 <2.3 <2.4 <2.4<4.1 <3.9 <4.1 <4.1 <3.1 <3 <3.1 <3.1 <2.7 <2.6 <2.7 <2.7 420 290 700 1,500 <2.6 <2.5 <2.6 <2.6 <12 <11 <12 <12 <9.9 <9.4 <9.8 <9.7 37 <7.3 <7.5 8 11 <4.6 <4.8 <4.8 TR0795 Page 3 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. Black Creek Aquifer Perched Zone Surficial Aquifer Surficial Aquifer LTW-05 MW-12S MW-13D MW-14DGW0619-LTW-05 GW0619-MW-12S GW0619-MW-13D GW0619-MW-14D 7/16/2019 7/8/2019 7/11/2019 7/11/2019 -------- LIQUID LIQUID LIQUID LIQUID320-52322-1 320-52171-1 320-52282-1 320-52282-1 320-52322-4 320-52171-3 320-52282-5 320-52282-4 26,000 B 17,000 37,000 J 9,700 240,000 6,600 180,000 180,00068,000 9,600 66,000 35,000 22,000 1,500 16,000 8,600 2,900 980 5,200 3,000 <340 980 400 700<5,700 10,000 21,000 7,900 <470 3,900 5,900 3,100 <270 <27 <270 660 310 540 2,100 4501,600 540 1,600 <1,6003,100 63 3,000 J 2,300 <150 <15 <150 <150 1,900 140 1,500 1,700 <240 <24 <240 <2401,400 120 1,700 540 2,100 330 2,800 <700 <460 <46 <460 <460 <600 <60 <600 <600 <410 <41 <410 <410 -------- -------- <20 <20 <20 <20 <20 <20 <20 <20 -------- -------- <20 <20 <20 38 -------- -------- -------- <20 <20 <20 <20 -------- -------- <20 <20 <20 <20 <2 <2 <2 <2330130590160 <2 <2 <2 <2 <2 3.8 <2 <2 <2 <2 <2 <2<2 <2 <2 <2 <2 <2 <2 <2 360 30 270 120 --------<2 2 2.8 3.3 100 23 120 90 <2 <2 <2 <2 <2 16 5.8 11<2 <2 <2 UJ <2 UJ <2 <2 <2 <2 <2 <2 <2 <2 2,600 150 2,400 560 <2 <2 <2 <2 <2 <2 <2 <2 <2 6.9 <2 <2 3.6 63 29 400 <2 7.7 <2 7.3 TR0795 Page 4 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. Surficial Aquifer Surficial Aquifer Surficial Aquifer Surficial Aquifer MW-15DRR MW-16D MW-17D MW-18DMW-15DRR-091119 GW0619-MW-16D GW0619-MW-17D GW0619-MW-18D 9/12/2019 7/15/2019 7/15/2019 7/15/2019 -------- Liquid LIQUID LIQUID LIQUID320-54317-1 320-52288-1 320-52288-1 320-52288-1 320-54317-3 320-52288-2 320-52288-3 320-52288-6 3,500 1,300 690 810 31,000 500 260 586,300 430 J 490 110 940 76 J 81 J 4.6 J 320 39 14 <2 130 12 J <2 <23,600 1,300 1,700 430 1,000 330 510 100 8,800 38 <2 <2 1,200 22 20 <296031254.121,000 65 <2.9 <2 30 <2 <2 <2 320 12 7.4 2.9 1,100 <2 <2 <2370125.9 <2 170 17 10 2.1 <46 <2.3 <2.3 <2 <60 <3 <3 <2 <41 <2 <2 <2 <2 ------ <2 ------ <20 <20 <20 <20 <20 <20 <20 <20 <2 ------ <4 ------ <20 <20 <20 <20 <2 ------ <2.1 ------ <2.1 ------ <20 <20 <20 <20 <2 ------ <2 ------ <20 <20 <20 <20 8.2 <2 <2 <24110113.8 <2 <2 <2 <2 3.3 <2 <2 <2 <2 <2 <2 <2<2 <2 <2 <2 <2 <2 <2 <2 18 3.9 2.9 <2 <2 ------13 <2 <2 <2 18 4.2 4.1 <2 <2 <2 <2 <2 5.8 <2 <2 <2<2 <2 UJ <2 UJ <2 UJ <2 <2 <2 <2 <2 <2 <2 <2 85 13 16 9 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 62 21 3.6 <2 35 <2 <2 <2 TR0795 Page 5 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. Surficial Aquifer Perched Zone Surficial Aquifer Surficial Aquifer MW-19D MW-1S MW-20D MW-21DGW0619-MW-19D GW0619-MW-1S GW0619-MW-20D GW0619-MW-21D 7/9/2019 6/28/2019 7/9/2019 7/11/2019 -------- LIQUID Liquid LIQUID LIQUID320-52149-1 320-51904-1 320-52149-1 320-52282-1 320-52149-1 320-51904-3 320-52149-2 320-52282-3 1,100 14,000 1,900 380 720 21,000 14,000 11083011,000 3,300 290 170 1,600 600 28 78 1,300 J 120 <2 <2 1,300 <34 <21,100 9,700 2,700 860 360 3,300 650 290 <2 48 <27 <2 15 1,000 <30 6.127620<160 8.3 J <2 430 87 <2 <2 <15 <15 <2 12 210 110 6 <2 <24 <24 <24.8 230 <28 <2 18 370 82 4.6 <2 <46 <46 <2 <2 <60 <60 <2 <2 <41 <41 <2 -------- -------- <20 <20 <20 <20 <20 <20 <20 <20 -------- -------- <20 <20 <20 <20 -------- -------- -------- <20 <20 <20 <20 -------- -------- <20 <20 <20 <20 <2 <2 <2 <211140217.1 <2 <2 <2 <2 <2 18 <2 <2 <2 <2 <2 <2<2 <2 <2 <2 <2 <2 <2 <2 4.7 50 11 <2 --------<2 2.3 <2 <2 5.6 26 13 2.4 <2 <2 <2 <2 <2 62 <2 <2<2 <2 <2 <2 UJ <2 <2 <2 <2 <2 <2 <2 <2 21 290 44 11 <2 <2 <2 <2 <2 <2 <2 <2 <2 10 <2 <2 21 94 68 <2 <2 13 <2 <2 TR0795 Page 6 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. Surficial Aquifer Perched Zone Perched Zone Perched Zone Perched Zone MW-22D MW-23 MW-24 MW-25 MW-27GW0619-MW-22D GW0619-MW-23 GW0619-MW-24 GW0619-MW-25 GW0619-MW-27 7/15/2019 6/25/2019 7/17/2019 6/25/2019 6/25/2019 ---------- LIQUID LIQUID LIQUID LIQUID LIQUID320-52288-1 320-51746-1 320-52464-1 320-51746-1 320-51746-1 320-52288-1 320-51746-2 320-52464-6 320-51746-11 320-51746-5 1,800 17,000 15,000 17,000 11,000 290 790 J 720,000 2,700 J 240,000 J5802,200 J 130,000 8,100 J 62,000 J 83 J 180 J 31,000 1,400 J 17,000 J 49 250 J 7,400 1,400 J 4,500 J 5.5 J 130 J 1,400 750 J 260 J1,400 4,400 J 8,100 25,000 J 7,800 J 450 1,600 J 3,200 9,800 J 2,900 J <2 <27 UJ 1,400 <27 UJ <53 UJ 18 150 J 1,200 410 J 550 J29450 J 2,100 1,700 J 570 J <2.9 <58 UJ 8,200 360 J 810 J <2 <15 UJ <150 <15 UJ 35 J 12 <54 UJ 7,100 180 J 3,100 J <2 <24 UJ <240 <24 UJ <49 UJ1141 J 420 190 J 240 J 17 290 J <700 1,400 J 220 J <2.3 <46 UJ <460 <46 UJ <92 UJ <3 <60 UJ <600 <60 UJ <120 UJ <2 <41 UJ <410 <41 UJ <82 UJ ---------- ---------- <20 <20 <20 <20 <20 <20 <20 <20 <20 <20 ---------- ---------- <20 <20 <20 <20 <20 ---------- ---------- ---------- <20 <20 <20 <20 <20 ---------- ---------- <20 <20 <20 <20 <20 <2 <2 <2 <2 <21245200190110 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 5.5 7.7 110 33 23 ----------<2 <2 <2 2.4 2.8 5.7 6.5 21 15 16 <2 <2 <2 <2 <2 <2 <2 16 4.2 <2<2 UJ <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 16 35 1,100 160 130 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 6.1 <2 <2 20 23 89 80 23 <2 <2 2.2 4.2 <2 TR0795 Page 7 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. Perched Zone Perched Zone Perched Zone Perched Zone Perched Zone MW-28 MW-2S MW-30 MW-7S MW-9SGW0619-MW-28 GW0619-MW-2S GW0619-MW-30 GW0619-MW-7S GW0619-MW-9S 6/26/2019 7/10/2019 7/2/2019 7/10/2019 6/25/2019 ---------- LIQUID LIQUID LIQUID LIQUID LIQUID320-51904-1 320-52165-1 320-52030-1 320-52165-1 320-51746-1 320-51904-1 320-52165-1 320-52030-2 320-52165-2 320-51746-4 2,900 17,000 18,000 17,000 5,600 <210 UJ 28,000 3,300 4,600 1,600 J<81 UJ 12,000 9,400 8,700 2,700 J <58 UJ 2,500 1,000 J 1,500 360 J <79 UJ 1,600 1,600 J 1,200 360 J <34 UJ 2,500 2,100 J 1,800 220 J<570 UJ 12,000 29,000 13,000 7,000 J <47 UJ 4,100 11,000 5,200 2,800 J <27 UJ 27 J <27 58 J 38 J <30 UJ 2,100 480 830 200 J<160 UJ 730 J 640 1,400 310 J <58 UJ 320 <58 650 <58 UJ <15 UJ 19 <15 17 <15 UJ <54 UJ 290 95 260 <54 UJ <24 UJ <24 <24 <24 <24 UJ <28 UJ 450 150 270 53 J <70 UJ 510 270 1,100 170 J <46 UJ <46 <46 <46 <46 UJ <60 UJ <60 <60 <60 <60 UJ <41 UJ <41 <41 <41 <41 UJ ---------- ---------- <20 <20 <20 <20 <20 <20 <20 <20 <20 <20 ---------- ---------- <20 <20 <20 <20 <20 ---------- ---------- ---------- <20 <20 <20 <20 <20 ---------- ---------- <20 <20 <20 <20 <20 <2 <2 <2 <2 <228200190130140 <2 <2 <2 <2 <2 <2 9 <2 6.2 <2 <2 <2 <2 <2 <2<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 7.3 77 33 43 10 ----------<2 4.2 <2 2.8 <2 4.3 40 10 22 5.1 <2 <2 <2 <2 <2 <2 75 6.3 15 2.2<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 35 340 160 160 61 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 4.7 <2 <2 <2 20 86 61 82 16 <2 14 3 7.8 2.7 TR0795 Page 8 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. Perched Zone Perched Zone Perched Zone Perched Zone Perched Zone NAF-01 NAF-02 NAF-03 NAF-04 NAF-06GW0619-NAF-01 GW0619-NAF-02 GW0619-NAF-03 GW0619-NAF-04 GW0619-NAF-06 7/10/2019 6/27/2019 6/27/2019 7/15/2019 7/11/2019 ---------- LIQUID LIQUID LIQUID LIQUID LIQUID320-52165-1 320-51904-1 320-51904-1 320-52288-1 320-52282-1 320-52165-3 320-51904-4 320-51904-2 320-52288-5 320-52282-1 22,000 160,000 J 54,000 J 270,000 J 100,000 J 20,000 2,900,000 J 260,000 J 240,000 810,00020,000 780,000 J 110,000 J 420,000 300,000 5,000 240,000 J 39,000 J 110,000 J 120,000 6,200 100,000 J 21,000 J 49,000 66,000 6,000 J 36,000 J 19,000 J 32,000 J 45,000 J17,000 74,000 J 47,000 J 85,000 47,000 7,400 32,000 J 23,000 J 28,000 20,000 840 23,000 J 57,000 J 1,100,000 78,000 J 2,900 17,000 J 9,200 J 110,000 29,0002,700 21,000 J 6,000 J 100,000 6,8001,700 210,000 J 37,000 J 1,200,000 92,000 70 <770 UJ 600 J 6,500 600 750 27,000 J 4,900 J 60,000 8,600 480 7,300 J 6,800 J 340,000 6,10082014,000 J 3,300 J 160,000 5,500 5,600 12,000 J 4,400 J 36,000 4,700 J <46 <2,300 UJ <230 UJ <920 <230 <60 <3,000 UJ <300 UJ <1,200 <300 <41 <2,000 UJ <200 UJ <820 <200 ---------- ---------- <20 <20 <20 <170 <20 <20 <20 <20 <450 <20 ---------- ---------- <20 <20 <20 <170 <20 ---------- ---------- ---------- <20 <20 <20 <160 <20 ---------- ---------- <20 <20 <20 <270 <20 2.4 2.4 <2 <17 2.34903,300 1,100 4,800 1,400 <2 <2 <2 <27 <2 6.8 48 18 77 20 <2 <2 <2 <39 <22.4 41 6.8 <47 4.3 <2 <2 <2 <16 <2 73 1,000 140 7,700 480 ----------2.9 2.9 <2 <15 3.2 54 610 190 980 350 <2 <2 <2 <14 <2 49 400 47 1,900 270<2 <2 <2 <39 UJ <2 UJ <2 <2 <2 <30 <2 <2 <2 <2 <26 <2 330 8,000 870 34,000 J 2,300 <2 <2 <25 <25 <2 <2 44 <2 <110 <2 10 170 46 <94 39 130 260 140 540 230 8.5 6.5 2.7 <46 12 TR0795 Page 9 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. Perched Zone Perched Zone Perched Zone Perched Zone Perched Zone NAF-07 NAF-08A NAF-09 NAF-10 NAF-12GW0619-NAF-07 GW0619-NAF-08A GW0619-NAF-09 GW0619-NAF-10 GW0619-NAF-12 6/27/2019 7/15/2019 7/2/2019 7/3/2019 7/17/2019 ---------- LIQUID LIQUID LIQUID LIQUID LIQUID320-51903-1 320-52288-1 320-52028-1 320-52030-1 320-52464-1 320-51903-6 320-52288-4 320-52028-4 320-52030-3 320-52464-4 37,000 J 37,000 J 42,000 J 23,000 120,000 J 93,000 J 7,400 5,900 4,700 230,00046,000 J 17,000 22,000 10,000 400,000 14,000 J 5,100 J 9,400 1,600 J 160,000 7,800 J 4,400 11,000 1,200 90,000 4,300 J 2,700 J 2,200 J 1,000 J 59,00026,000 J 200,000 54,000 28,000 330,000 10,000 J 110,000 35,000 9,800 31,000 610 J 5,500 480 88 670,000 2,000 J 2,100 1,100 740 230,0005,100 J 3,000 1,100 J 2,700 200,00032,000 J 21,000 1,300 410 1,100,000 63 J <77 42 21 11,000 1,800 J 790 800 470 560,000 270 J 4,400 52 67 710,000850 J 2,600 520 480 380,000 2,400 J 1,800 860 1,600 120,000 <46 UJ <230 <46 <46 <460 <60 UJ <300 <60 <60 <600 <41 UJ <200 <41 <41 <410 ---------- ---------- <20 <20 <20 <20 <20 <20 <20 <20 <20 <20 ---------- ---------- <20 <20 <20 <20 <20 ---------- ---------- ---------- <20 <20 <20 <20 <20 ---------- ---------- <20 <20 <20 <20 <20 2.4 <2 10 4.6 <22203,300 1,300 240 6,500 J <2 <2 <2 <2 <2 8.8 4.3 7 4.1 220 <2 <2 <2 <2 <2<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 110 200 120 46 9,300 ----------2.6 2.2 4.4 <2 5.3 J 60 89 85 24 1,700 J <2 <2 <2 <2 <2 34 38 19 16 4,600 J<2 <2 UJ <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 430 1,300 610 270 18,000 J <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 3.8 3.8 <2 <2 42 J 110 54 100 99 750 J 12 7.6 10 11 42 TR0795 Page 10 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. Black Creek Aquifer Black Creek Aquifer Surficial Aquifer PIW-10DR PIW-10DR PIW-10SPIW-10DR-091019 GW4Q19-PIW-10DR-103019 GW0619-PIW-10S 9/10/2019 10/30/2019 7/22/2019 ------ LIQUID LIQUID LIQUID320-54176-1 320-55860-1 320-52621-1 320-54176-1 320-55860-2 320-52621-3 19,000 15,000 4,400 45,000 47,000 1,50019,000 19,000 3,000 6,000 6,500 520 1,200 J 1,200 210 <34 UJ <34 <349,100 10,000 5,700 3,400 3,600 2,100 <27 <27 <27 160 J 200 1501,500 1,200 1906,400 J 5,600 <58 15 18 <15 510 490 <54 <24 <24 <24790 J 870 <28 1,200 980 J 130 <46 <46 <46 <60 <60 <60 <41 <41 <41 <2 ---- <2 ---- <20 --<20 <20 --<24 <2 ---- <4 ---- 34 --<20 <2 ---- <2.1 ---- <2.1 ---- <20 --<20 <2 ---- <2 ---- <20 --<20 <2 --<2240--49 <2 --<2 <2 --<2 <2 --<2.1<2 --<2.6 <2 --<2 120 --7.9 <2 ----<2 --<2 56 --6.6 <2 --<2 <2 --<2<2 --<2.1 <2 --<2 <2 --<2 750 --47 <2 --<2 <2 --<6.1 <2 --<5.1 2.9 --12 <2 --<2.5 TR0795 Page 11 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. Surficial Aquifer Surficial Aquifer Surficial Aquifer Surficial Aquifer PIW-10S PIW-1D PIW-1D PIW-1DGW4Q19-PIW-10S-102919 GW0619-PIW-1D-D GW0619-PIW-1D GW4Q19-PIW-1D-102919 10/29/2019 7/19/2019 7/19/2019 10/29/2019 --Field Duplicate ---- LIQUID LIQUID LIQUID LIQUID320-55854-1 320-52621-1 320-52621-1 320-55854-1 320-55854-9 320-52621-2 320-52621-1 320-55854-4 3,600 8,700 J 11,000 J 9,500 1,800 15,000 14,000 14,0002,400 9,700 9,700 8,200 450 1,800 1,800 1,300 160 320 300 260 17 <34 <34 <6.75,700 10,000 9,900 9,300 1,900 3,600 3,600 2,900 <2.7 <27 <27 <5.3 93 51 48 52200480420400 <5.8 <58 <58 <12 <2 <15 <15 <3.1 22 160 150 130 <2.4 <24 <24 <4.912333730 110 350 J 290 J 270 <4.6 <46 <46 <9.2 <6 <60 <60 <12 <4.1 <41 <41 <8.2 -------- -------- --<20 <20 -- --<24 <46 -- -------- -------- --<20 <20 -- -------- -------- -------- --<20 <20 -- -------- -------- --<20 <27 -- --<2 <2 ----70 70 -- --<2 <2.8 -- --<2 <2.7 -- --<2.1 <4 ----<2.6 <4.9 -- --<2 <2 -- --14 14 -- ----------<2 <2 -- --11 11 -- --<2 <2 -- --<2 <2.4 ----<2.2 <4.1 -- --<2 <3.1 -- --<2 <2.6 -- --140 140 -- --<2 <2.6 -- --<6.1 <11 -- --<5.1 <9.7 -- --4.4 <7.5 -- --<2.5 <4.8 -- TR0795 Page 12 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. Black Creek Aquifer Black Creek Aquifer Black Creek Aquifer Black Creek Aquifer PIW-2D PIW-2D PIW-2D PIW-3DPIW-2D-091219 PIW-2D-091219-Z GW4Q19-PIW-2D-110119 GW0619-PIW-3D 9/12/2019 9/12/2019 11/1/2019 7/18/2019 -------- LIQUID LIQUID LIQUID LIQUID320-54314-1 320-54316-1 320-56112-1 320-52464-1 320-54314-2 320-54316-1 320-56112-3 320-52464-2 1,800 1,800 1,600 9,600 14,000 13,000 19,000 5,4002,900 3,000 3,500 9,100 100 100 140 1,700 <79 <79 <16 780 <34 <34 <6.7 951,300 1,200 1,100 12,000 92 89 76 4,400 <27 <27 <5.3 <2.7 <30 <30 <6.1 150<160 <160 44 500 <58 <58 16 <5.8 <15 <15 <3.1 5.1 110 J 130 140 83 <24 <24 <4.9 <2.4 <28 <28 <5.6 52 <70 <70 40 J 290 <46 <46 <9.2 <4.6 <60 <60 <12 <6 <41 <41 <8.2 <4.1 <2 <2 ---- <3.2 <3.2 ---- <20 <20 --<20 <52 <52 --<20 <8.5 <8.5 ---- <14 <14 ---- <20 <20 --<20 <2.4 <2.4 ---- <2.1 <2.1 ---- <2.1 <2.1 ---- <20 <20 --<20 <8.7 <8.7 ---- <4.3 <4.3 ---- <31 <31 --<20 <2 <2 --2.21819--84 <3.2 <3.2 --<2 <3.1 <3.1 --<2 <4.5 <4.5 --<2<5.5 <5.5 --<2 <2 <2 --<2 <2.5 <2.5 --30 <8.9 <8.9 ----3 3.5 --3.1 <5.8 <5.8 --21 <2 <2 --<2 <2.7 <2.7 --4.2<4.6 <4.6 --<2 <3.5 <3.5 --<2 <3 <3 --<2 70 76 --130 <2.9 3.1 --<2 <13 <13 --<2 <11 <11 --<2 <8.5 <8.5 --35 <5.4 <5.4 --9.5 TR0795 Page 13 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. Black Creek Aquifer Black Creek Aquifer Black Creek Aquifer PIW-3D PIW-4D PIW-4DGW4Q19-PIW-3D-102819 PIW-04D-091119 PIW-4D-091119-Z 10/28/2019 9/11/2019 9/11/2019 ------ LIQUID Liquid Liquid320-55757-1 320-54317-1 320-54319-1 320-55757-6 320-54317-2 320-54319-2 11,000 6.7 6.7 5,200 <210 <2107,900 <81 <81 1,400 <58 <58 700 <79 <79 97 <34 <3410,000 <570 <570 3,600 <47 <47 <5.3 <27 <27 140 <30 <30390<160 <160 <12 <58 <58 5.2 <15 <15 72 <54 <54 <4.9 <24 <2448<28 <28 220 J <70 <70 <9.2 <46 <46 <12 <60 <60 <8.2 <41 <41 --<2 <2 --<2 <2 --<20 <20 --<20 <20 --<2 <2 --<4 <4 --<20 <20 --<2 <2 --<2.1 <2.1 --<2.1 <2.1 --<20 <20 --<2 <2 --<2 <2 --<20 <20 --<2 <2--<2 <2 --<2 <2 --<2 <2 --<2 <2--<2 <2 --<2 <2 --<2 <2 --<2 <2--<2 <2 --<2 <2 --<2 <2 --<2 <2--<2 <2 --<2 <2 --<2 <2 --<2 <2 --<2 <2 --<2 <2 --<2 <2 --<2 <2 --<2 <2 TR0795 Page 14 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. Black Creek Aquifer Black Creek Aquifer Surficial Aquifer PIW-4D PIW-4D PIW-5SGW4Q19-PIW-4D-103119-Dup GW4Q19-PIW-4D-103119 GW0619-PIW-5S 10/31/2019 10/31/2019 7/19/2019 Field Duplicate ---- LIQUID LIQUID LIQUID320-55909-1 320-55909-1 320-52624-1 320-55909-2 320-55909-1 320-52624-5 2.9 B 3.6 B 79,000 J <5 <5 35,0002.1 2.3 38,000 <2 <2 10,000 <2 <2 8,700 <2 <2 4,800<10 <10 100,000 <20 <20 44,000 <2 <2 4,300 <2 <2 1,300<2 <2 4,700 <2 <2 16,000 <2 <2 65 <2 <2 770 <2 <2 1,800 <2 <2 1,600 <2 UJ <2 UJ 3,000 <2 <2 <46 <2 <2 <60 <2 <2 <41 ------ ------ ----<180 ----<470 ------ ------ ----<180 ------ ------ ------ ----<170 ------ ------ ----<280 ----<18----1,100 ----<29 ----<28 ----<41----<50 ----<17 ----140 ----------<15 ----58 ----<14 ----<24----<42 ----<32 ----<27 ----910 ----<26 ----<120 ----<99 ----<77 ----<49 TR0795 Page 15 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. Surficial Aquifer Floodplain Deposits Floodplain Deposits Black Creek Aquifer PIW-5S PIW-6S PIW-6S PIW-7DGW4Q19-PIW-5S-102919 GW0619-PIW-6S GW4Q19-PIW-6S-102919 GW0619-PIW-7D 10/29/2019 7/17/2019 10/29/2019 7/19/2019 -------- LIQUID LIQUID LIQUID LIQUID320-55854-1 320-52454-1 320-55854-1 320-52624-1 320-55854-2 320-52454-5 320-55854-3 320-52624-3 41,000 13,000 10,000 11,000 61,000 160,000 190,000 150,00033,000 35,000 33,000 27,000 7,600 5,000 4,400 2,400 4,700 150 <160 570 1,900 <34 <67 <3476,000 8,700 9,000 3,500 31,000 2,300 2,300 530 1,300 <27 <53 <27 580 31 <61 532,900 470 720 2805,000 1,700 1,900 690 41 <15 <31 <15 680 1,100 1,100 810 570 <24 <49 <2482043<56 170 J 2,700 490 610 350 J <46 <46 <92 <46 <60 <60 <120 <60 <41 <41 <82 <41 -------- -------- --<20 --<20 --<47 --<44 -------- -------- --<20 --<20 -------- -------- -------- --<20 --<20 -------- -------- --<28 --<26 --<2 --<2--150 --100 --<2.9 --<2.7 --<2.8 --<2.6 --<4.1 --<3.8--<5 --<4.6 --<2 --<2 --18 --41 ----------<2 --<2 --16 --14 --<2 --<2 --<2.4 --<2.3--<4.2 --<3.9 --<3.2 --<2.9 --<2.7 --<2.5 --830 --820 --<2.6 --<2.4 --<12 --<11 --<9.9 --<9.2 --<7.7 --<7.1 --<4.9 --<4.5 TR0795 Page 16 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. Black Creek Aquifer Floodplain Deposits Floodplain Deposits Black Creek Aquifer PIW-7D PIW-7S PIW-7S PIW-8DGW4Q19-PIW-7D-103019 GW0619-PIW-7S GW4Q19-PIW-7S-103019 GW0619-PIW-8D 10/30/2019 7/19/2019 10/30/2019 7/19/2019 -------- LIQUID LIQUID LIQUID LIQUID320-55860-1 320-52624-1 320-55860-1 320-52624-1 320-55860-10 320-52624-4 320-55860-1 320-52624-2 9,400 1,400 6,600 54,000 J 170,000 12,000 31,000 400,00027,000 2,400 8,000 140,000 2,900 180 1,500 51,000 590 <79 96 7,200 <34 <34 <34 <3403,300 1,100 3,800 15,000 510 <47 1,200 4,500 <27 <27 <27 <270 67 <30 77 770300<160 740 4,400560<58 <58 10,000 <15 <15 <15 <150 830 88 350 3,600 <24 <24 <24 <240200<28 110 3,700 380 130 810 4,500 <46 <46 <46 <460 <60 <60 <60 <600 <41 <41 <41 <410 -------- -------- --<20 --<38 --<20 --<98 -------- -------- --<20 --<38 -------- -------- -------- --<20 --<36 -------- -------- --<20 --<58 --<2 --<3.8--26 --930 --<2 --<6 --<2 --<5.8 --<2 --<8.5--<2 --<10 --<2 --<3.6 --<2 --920 ----------<2 --<3.2 --<2 --290 --<2 --<3 --<2 --<5.1--<2 --<8.7 --<2 --<6.6 --<2 --<5.6 --130 --3,900 --<2 --<5.5 --<2 --<24 --<2 --<21 --<2 --<16 --<2 --<10 TR0795 Page 17 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. Black Creek Aquifer Black Creek Aquifer Black Creek Aquifer Surficial Aquifer PIW-8D PIW-9D PIW-9D PIW-9SGW4Q19-PIW-8D-103019 GW0619-PIW-9D GW4Q19-PIW-9D-102319 GW0619-PIW-9S 10/30/2019 7/23/2019 10/23/2019 7/18/2019 -------- LIQUID LIQUID LIQUID LIQUID320-55860-1 320-52722-1 320-55683-1 320-52464-1 320-55860-9 320-52722-1 320-55683-3 320-52464-1 65,000 33,000 20,000 7,300 400,000 150,000 200,000 150,000110,000 41,000 40,000 34,000 45,000 12,000 11,000 8,400 6,700 3,100 2,300 1,500 <130 84 <170 <3415,000 9,900 8,500 7,500 4,200 3,400 3,000 2,700 <110 29 <130 <27 860 370 330 1703,300 J 1,900 J <790 8007,200 2,700 1,900 J 800 120 18 <77 <15 3,200 1,700 1,700 1,500 <97 <24 <120 <243,900 1,600 1,600 690 4,900 1,700 630 650 <180 <46 <230 <46 <240 <60 <300 <60 <160 <41 <200 <41 -------- -------- --<20 --<20 --<20 --<20 -------- -------- --<20 --<20 -------- -------- -------- --<20 --<20 -------- -------- --<20 --<20 --<2 --<2--240 --120 --<2 --<2 --<2 --<2 --<2 --<2--<2 --<2 --<2 --<2 --100 --43 ----------<2 --<2 --81 --23 --<2 --<2 --<2 --<2--<2 UJ --<2 --<2 --<2 --<2 --<2 --790 --250 --<2 --<2 --<2 --<2 --<2 --<2 --17 --13 --<2 --<2 TR0795 Page 18 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. Surficial Aquifer Perched Zone Perched Zone Perched Zone PIW-9S PW-01 PW-01 PW-01GW4Q19-PIW-9S-102319 PW-01-090919-D PW-01-090919 GW4Q19-PW-01-101819 10/23/2019 9/9/2019 9/9/2019 10/18/2019 --Field Duplicate ---- LIQUID LIQUID LIQUID LIQUID320-55683-1 320-54217-1 320-54217-1 320-55686-1 320-55683-6 320-54217-2 320-54217-1 320-55686-1 9,700 7,500 8,300 7,500 190,000 23,000 25,000 23,00035,000 9,400 10,000 10,000 8,300 1,900 2,000 J 2,300 1,400 960 1,000 J 1,200 <34 540 660 J 9307,500 3,600 4,100 J 3,800 2,500 1,200 1,300 1,300 <27 410 490 480 200 400 490 J 5309604706104101,000 880 J 900 J 700 J <15 <15 <15 13 1,700 270 280 J 270 <24 100 110 J 95740110130 J 120 900 260 310 260 <46 <46 <46 <9.2 <60 <60 <60 <12 <41 <41 <41 <8.2 --<2 <2 -- --<2 <2 -- --<20 <20 -- --<20 <20 -- --<2 <2 -- --<4 <4 -- --<20 <20 -- --<2 <2 -- --<2.1 <2.1 -- --<2.1 <2.1 -- --<20 <20 -- --<2 <2 -- --<2 <2 -- --<20 <20 -- --<2 <2 ----58 61 -- --<2 <2 -- --<2 <2 -- --<2 <2 ----<2 <2 -- --<2 <2 -- --25 25 -- --<2 <2 ----<2 <2 -- --12 13 -- --<2 <2 -- --6.4 6.4 ----<2 <2 -- --<2 <2 -- --<2 <2 -- --100 110 -- --<2 <2 -- --<2 <2 -- --<2 <2 -- --100 95 -- --6.4 6.6 -- TR0795 Page 19 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. Surficial Aquifer Surficial Aquifer Surficial Aquifer Surficial Aquifer PW-02 PW-02 PW-02 PW-03PW-02-091119 PW-02-091119-Z GW4Q19-PW-02-110419 PW-03-091119 9/11/2019 9/11/2019 11/4/2019 9/11/2019 -------- LIQUID LIQUID LIQUID LIQUID320-54274-1 320-54278-1 320-56112-1 320-54317-1 320-54274-1 320-54278-1 320-56112-7 320-54317-1 7,400 8,100 7,800 78,000 9,500,000 9,900,000 89,000 5,9002,800,000 3,000,000 22,000 18,000 750,000 800,000 6,200 5,800 250,000 270,000 2,300 1,800 90,000 85,000 950 46470,000 520,000 4,200 130,000 180,000 180,000 1,500 76,000 35,000 39,000 480 130 43,000 40,000 550 75075,000 78,000 740 11,000250,000 270,000 3,000 47,000 1,900 2,600 20 93 110,000 110,000 970 8,000 2,200 3,600 25 52018,000 19,000 220 4,900 36,000 33,000 580 12,000 <2,300 <4,600 <46 <46 <3,000 <6,000 <60 <60 <2,000 <4,100 <41 <41 <2 <2 --<2 <2 <2 --<3.2 <20 <20 --<20 <20 <20 --<52 <2 <2 --<8.5 <4 <4 --<14 <20 <20 --<20 <2 <2 --<2.4 <2.1 <2.1 --<2.1 <2.1 <2.1 --<2.1 <20 <20 --<20 <2 <2 --<8.7 <2 <2 --<4.3 <20 <20 --<31 <2 <2 --<26882--5,400 <2 <2 --<3.2 <2 <2 --<3.1 <2 <2 --<4.5<2 <2 --<5.5 <2 <2 --<2 26 31 --310 <2 <2 --<8.9<2 <2 --3.3 13 16 --150 <2 <2 --<2 4.7 5.4 --<2.7<2 <2 --<4.6 <2 <2 --<3.5 <2 <2 --<3 120 140 --3,700 <2 <2 --<2.9 <2 <2 --<13 <2 <2 --<11 85 100 --16 3.6 2.3 --<5.4 TR0795 Page 20 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. Surficial Aquifer Surficial Aquifer Surficial Aquifer Surficial Aquifer PW-03 PW-03 PW-04 PW-04PW-03-091119-Z GW4Q19-PW-03-110619 PW-04-091119 PW-04-091119-Z 9/11/2019 11/6/2019 9/11/2019 9/11/2019 -------- LIQUID LIQUID LIQUID LIQUID320-54319-1 320-56117-1 320-54294-1 320-54294-1 320-54319-1 320-56117-6 320-54294-4 320-54294-5 54,000 61,000 940 880 5,100 6,300 270 32016,000 18,000 770 870 5,200 5,700 280 310 1,400 1,700 66 68 <34 <34 <2 <2120,000 150,000 710 790 69,000 76,000 310 340 93 94 <2 <2 460 800 8.4 4.39,600 10,000 120 160 J42,000 37,000 4.4 4.4 J 69 110 <2 <2 7,100 8,400 6.7 8 440 500 <2 <23,600 5,300 5.9 5 11,000 12,000 47 64 <46 <46 <2 <2 <60 <60 <2 <2 <41 <41 <2 <2 <2 --<2 <2 <3.2 --<2 <2 <20 --<20 <20 <52 --<20 <20 <8.5 UJ --<2 <2 <14 UJ --<4 <4 <20 --<20 <20 <2.4 --<2 <2 <2.1 --<2.1 <2.1 <2.1 --<2.1 <2.1 <20 --<20 <20 <8.7 --<2 UJ <2 <4.3 --<2 <2 <31 --<20 <20 <2 --<2 <24,700 --11 11 <3.2 --<2 <2 <3.1 --<2 <2 <4.5 --<2 <2<5.5 --<2 <2 <2 --<2 <2 260 --5.1 6.1 <8.9 --<2 <23.6 --<2 <2 120 --3.5 3.7 <2 --<2 <2 <2.7 --<2 <2<4.6 --<2 <2 <3.5 --<2 <2 <3 --<2 <2 3,400 --17 17 <2.9 --<2 <2 <13 --<2 <2 <11 --<2 <2 13 --<2 <2 <5.4 --<2 <2 TR0795 Page 21 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. Surficial Aquifer Surficial Aquifer Surficial Aquifer Surficial Aquifer PW-04 PW-05 PW-05 PW-06GW4Q19-PW-04-103019 PW-05-090919 GW4Q19-PW-05-103019 PW-06-091019 10/30/2019 9/9/2019 10/30/2019 9/10/2019 -------- LIQUID LIQUID LIQUID LIQUID320-55860-1 320-54174-1 320-55860-1 320-54231-1 320-55860-4 320-54174-1 320-55860-3 320-54231-1 1,000 1,600 1,200 950 360 J <210 230 <210950730690510 330 73 73 74 70 130 120 <79 <2 <34 UJ <2 UJ <341,100 1,600 1,300 1,100 450 430 410 380 <2 <27 <2 <27 16 50 59 <30200 J <160 36 <1603.6 J <58 <2 <58 <2 <15 <2 <15 10 <54 6.4 <54 <2 <24 <2 <2410<28 17 <28 65 J <70 17 <70 <2 <46 <2 <46 <2 <60 <2 <60 <2 <41 <2 <41 --<2 --<2 --<2 --<2 --<20 --<20 --<20 --<20 --<2 --<2 --<4 --<4 --<20 --<20 --<2 --<2 --<2.1 --<2.1 --<2.1 --<2.1 --<20 --<20 --<2 --<2 --<2 --<2 --<20 --<20 --<2 --<2--13 --8.8 --<2 --<2 --<2 --<2 --<2 --<2--<2 --<2 --<2 --<2 --4.5 --3.7 --<2 --<2--<2 --<2 --3 --3 --<2 --<2 --<2 --<2--<2 --<2 --<2 --<2 --<2 --<2 --15 --12 --<2 --<2 --<2 --<2 --<2 --<2 --7.7 --4.1 --<2 --<2 TR0795 Page 22 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. Surficial Aquifer Surficial Aquifer Surficial Aquifer Surficial Aquifer PW-06 PW-07 PW-07 PW-07GW4Q19-PW-06-102919 PW-07-091319 PW-07-091319-Z GW4Q19-PW-07-110819 10/29/2019 9/13/2019 9/13/2019 11/8/2019 -------- Liquid Liquid Liquid LIQUID320-55854-1 320-54328-1 320-54328-1 320-56173-1 320-55854-1 320-54328-2 320-54328-3 320-56173-7 1,300 1,100 1,000 790 J 250 400 360 310 J6901,000 960 880 110 140 140 110 71 87 81 54 <2 UJ <2 <2 5.71,400 1,400 1,300 1,400 490 440 420 380 J <2 <2 <2 <2 40 5.1 3.1 7.4504159 J 23 <2 <2 <2 9.1 <2 <2 <2 <2 7.5 9.1 8.8 9.1 <2 <2 <2 <29.3 6.4 6 6.5 22 13 16 J 9.5 J <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 --<2 <2 -- --<2 <2 -- --<20 <20 -- --<20 <20 -- --<2 <2 -- --<4 <4 -- --<20 <20 -- --<2 <2 -- --<2.1 <2.1 -- --<2.1 <2.1 -- --<20 <20 -- --<2 <2 -- --<2 <2 -- --<20 <20 -- --<2 <2 ----33 32 -- --<2 <2 -- --<2 <2 -- --<2 <2 ----<2 <2 -- --<2 <2 -- --6.2 4.4 -- --<2 <2 ----<2 <2 -- --4.7 4.2 -- --<2 <2 -- --<2 <2 ----<2 <2 -- --<2 <2 -- --<2 <2 -- --21 21 -- --<2 <2 -- --<2 <2 -- --<2 <2 -- --2.7 <2 -- --<2 <2 -- TR0795 Page 23 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. Black Creek Aquifer Black Creek Aquifer Black Creek Aquifer Black Creek Aquifer PW-09 PW-09 PW-09 PW-10RPW-09-091119 PW-09-091119-Z GW4Q19-PW-09-103019 GW0619-PW-10R 9/11/2019 9/11/2019 10/30/2019 9/19/2019 -------- LIQUID LIQUID LIQUID LIQUID320-54274-1 320-54278-1 320-55860-1 320-54522-1 320-54274-2 320-54278-2 320-55860-5 320-54522-1 <4 <4 <2 9,900 <210 <210 <5 130,000170 J 160 <2 23,000 <58 <58 <2 1,100 <79 <79 <2 <79 <34 <34 <2 <341,600 1,900 <10 3,200 220 160 <20 440 160 J 79 <2 <27 81 37 <2 <30<160 <160 <2 <1609465 J <2 160 <15 <15 <2 <15 <54 <54 <2 680 <24 <24 <2 <24 <28 <28 <2 <28 <70 <70 <2 230 <46 <46 <2 <46 <60 <60 <2 <60 <41 <41 <2 <41 <2 <2 --<22 <2 <2 ---- <20 <20 --<230 <20 <20 --<600 <2 <2 --<97 <4 <4 --<160 <20 <20 --<230 <2 <2 ---- <2.1 <2.1 ---- <2.1 <2.1 ---- <20 <20 --<220 <2 <2 --<37 <2 <2 --<49 <20 <20 --<350 <2 <2 --130<2 <2 --66 <2 <2 --<37 <2 <2 --<35 <2 <2 --<52<2 <2 --<63 <2 <2 --<22 <2 <2 --<29 <2 <2 --<100<2 <2 --<19 <2 <2 --<66 <2 <2 --<18 <2 <2 --<31<2 <2 --<53 <2 <2 --<40 <2 <2 --<34 <2 <2 --530 <2 <2 --<33 <2 <2 --<150 <2 <2 --<130 <2 <2 --<97 <2 <2 --<62 TR0795 Page 24 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. Black Creek Aquifer Black Creek Aquifer Black Creek Aquifer Black Creek Aquifer PW-10R PW-10R PW-11 PW-11GW0619-PW-10R-Z GW4Q19-PW-10R-110419 PW-11-091019 PW-11-091019-Z 9/19/2019 11/4/2019 9/10/2019 9/10/2019 -------- LIQUID LIQUID LIQUID LIQUID320-54524-1 320-56112-1 320-54231-1 320-54229-1 320-54524-1 320-56112-4 320-54231-2 320-54229-1 8,400 5,200 16,000 20,000 120,000 150,000 280,000 310,00022,000 24,000 56,000 J 59,000 980 1,000 32,000 J 33,000 <79 <79 16,000 16,000 <34 34 670 J 4803,100 3,500 8,200 9,000 440 490 3,100 3,200 <27 <27 410 320 <30 <30 910 720<160 <160 1,400 1,7001601703,200 3,300 <15 <15 93 78 640 820 3,000 3,100 <24 <24 <120 <120 <28 <28 940 820 210 150 540 640 <46 <46 <230 <230 <60 <60 <300 <300 <41 <41 <200 <200 <19 --<2 <2 ----<3.1 <2.9 <200 --<20 <20 <530 --<500 <48 <87 --<82 <7.8 <140 --<13 <13 <200 --21 <20 ----<2.3 <2.2 ----<2.1 <2.1 ----<2.1 <2.1 <190 --<20 <20 <37 --<84 <7.9 <35 --<4.1 <3.9 <320 --<300 <28 95 --<2 3.267--150 150 <33 --<3.1 <2.9 <32 --<3 <2.8 <46 --<4.3 <4.1<56 --<5.3 <5 <19 --<2 <2 <26 --430 410 <91 --<8.6 <8.1<17 --3.5 5.1 <59 --39 35 <16 --<2 <2 <28 --4.2 3.1<47 --<4.4 <4.2 <36 --<3.4 <3.2 <31 --<2.9 <2.7 560 --1,300 1,400 <30 --<2.8 <2.6 <130 --<13 <12 <110 --<11 <10 <87 --25 23 <55 --<5.2 <4.9 TR0795 Page 25 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. Black Creek Aquifer Black Creek Aquifer Black Creek Aquifer Black Creek Aquifer PW-11 PW-12 PW-12 PW-12GW4Q19-PW-11-102319 PW-12-091119 PW-12-091119-Z GW4Q19-PW-12-110519 10/23/2019 9/11/2019 9/11/2019 11/5/2019 -------- LIQUID Liquid Liquid LIQUID320-55683-1 320-54299-1 320-54299-1 320-56112-1 320-55683-2 320-54299-4 320-54299-5 320-56112-10 12,000 <4 <4 <2 190,000 <5 <5 <536,000 <2 <2 <2 18,000 <2 <2 <2 11,000 <2 <2 <2 1,100 <2 <2 <26,000 15 <10 <10 2,400 <20 <20 <20 440 <2 <2 <2 980 <2 <2 <21,100 <2 <2 <22,000 J <2 <2 <2 <77 <2 <2 <2 1,800 <2 <2 <2 <120 <2 <2 <2590<2 <2 <2 <350 <2 <2 <2 <230 <2 <2 <2 <300 <2 <2 <2 <200 <2 <2 <2 --<2 <2 -- --<2 <2 -- --<20 <20 -- --<20 <20 -- --<2 <2 -- --<4 <4 -- --<20 <20 -- --<2 <2 -- --<2.1 <2.1 -- --<2.1 <2.1 -- --<20 <20 -- --<2 <2 -- --<2 <2 -- --<20 <20 -- --<2 <2 ----<2 <2 -- --<2 <2 -- --<2 <2 -- --<2 <2 ----<2 <2 -- --<2 <2 -- --<2 <2 -- --<2 UJ <2 UJ ----<2 <2 -- --<2 <2 -- --<2 <2 -- --<2 <2 ----<2 UJ <2 UJ -- --<2 <2 -- --<2 <2 -- --<2 <2 -- --<2 <2 -- --<2 <2 -- --<2 <2 -- --<2 <2 -- --<2 <2 -- TR0795 Page 26 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. Black Creek Aquifer Black Creek Aquifer Black Creek Aquifer Black Creek Aquifer PW-13 PW-13 PW-13 PW-14PW-13-091019 PW-13-091019-Z GW4Q19-PW-13-110819 PW-14-091119 9/10/2019 9/10/2019 11/8/2019 9/11/2019 -------- LIQUID LIQUID LIQUID LIQUID320-54231-1 320-54229-1 320-56173-1 320-54274-1 320-54231-3 320-54229-2 320-56173-8 320-54274-3 <15 <15 <2 22,000 <210 <2,100 <5 9,500,000<81 <810 <2 3,400,000 <58 <580 <2 1,100,000 <79 <790 <2 610,000 <34 <340 <2 390,000<570 <5,700 <10 1,400,000 <47 <470 <20 390,000 <27 <270 <2 6,000 <30 <300 <2 250,000<160 <1,600 <2 150,000 <58 <580 <2 190,000 <15 <150 <2 5,000 <54 <540 <2 96,000 <24 <240 <2 <2,400 <28 <280 <2 210,000 <70 <700 <2 130,000 <46 <460 <2 <4,600 <60 <600 <2 <6,000 <41 <410 <2 <4,100 <2 <2 --<2 <3.2 <3.2 --<2 <20 <20 --<20 <52 <52 --<20 <8.5 <8.5 --<2 <14 <14 --<4 <20 38 --<20 <2.4 <2.4 --<2 <2.1 <2.1 --<2.1 <2.1 <2.1 --<2.1 <20 <20 --<20 <8.7 <8.7 --<2 <4.3 <4.3 --<2 <31 <31 --<20 <2 16 --<2<3.5 <3.5 --420 <3.2 <3.2 --<2 <3.1 <3.1 --2.4 <4.5 <4.5 --<2<5.5 <5.5 --<2 <2 <2 --<2 <2.5 <2.5 --280 <8.9 <8.9 --<22.3 2.1 --4.2 <5.8 <5.8 --130 <2 <2 --<2 <2.7 <2.7 --190<4.6 <4.6 --<2 <3.5 <3.5 --<2 <3 <3 --<2 <4.9 <4.9 --1,300 <2.9 4.8 --<2 <13 <13 --<2 <11 <11 --<2 <8.5 <8.5 --120 <5.4 <5.4 --16 TR0795 Page 27 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. Black Creek Aquifer Black Creek Aquifer Black Creek Aquifer PW-14 PW-15R PW-15RGW4Q19-PW-14-102319 GW0619-PW-15R-D GW0619-PW-15R 10/23/2019 9/19/2019 9/19/2019 --Field Duplicate -- LIQUID LIQUID LIQUID320-55683-1 320-54519-1 320-54519-1 320-55683-8 320-54519-2 320-54519-1 17,000 11,000 J 8,700 J 95,000 340,000 330,00027,000 64,000 63,000 8,100 14,000 14,000 4,800 2,200 2,200 2,900 <67 <6713,000 36,000 36,000 3,400 9,300 8,900 52 4,100 3,300 2,500 670 640 J1,200 1,800 J 1,500 J2,400 J 21,000 19,000 42 34 270 840 3,500 3,500 25 190 250 J2,000 510 550 J 1,200 560 700 J <46 <92 210 <60 <120 220 <41 <82 210 --<18 <28 ------ --<180 <180 --<480 <470 --<78 240 --<130 270 --<180 <180 ------ ------ ------ --<180 <170 --<75 210 --<40 220 --<290 <280 --20 <33--140 170 --<30 <36 --<29 <36 --<42 <41--<51 <50 --<18 <31 --56 J 94 J --<82 <81--<16 <32 --<54 <60 --<15 <30 --<25 <39--<42 <42 --<32 <32 --<28 <33 --580 660 --<27 <36 --<120 <120 --<100 <100 --<78 <77 --<50 <49 TR0795 Page 28 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. Black Creek Aquifer Black Creek Aquifer Perched Zone Perched Zone PW-15R PW-15R PZ-11 PZ-11GW4Q19-PW-15R-110619-D GW4Q19-PW-15R-110619 GW0619-PZ-11-D GW0619-PZ-11 11/6/2019 11/6/2019 7/16/2019 7/16/2019 Field Duplicate --Field Duplicate -- LIQUID LIQUID LIQUID LIQUID320-56117-1 320-56117-1 320-52322-1 320-52322-1 320-56117-5 320-56117-4 320-52322-2 320-52322-1 11,000 11,000 6,200 B 4,900 B 460,000 450,000 7,500 7,10077,000 76,000 5,000 4,800 17,000 16,000 910 830 2,300 2,000 710 650 <170 <170 920 80050,000 50,000 3,600 3,300 11,000 11,000 1,200 1,100 2,400 2,300 560 530 480 470 350 3202,400 2,200 260 22027,000 27,000 1,200 1,200 <77 <77 <15 <15 4,800 4,600 130 140 <120 <120 30 29430400110120 890 930 110 J 110 J <230 <230 <46 <46 <300 <300 <60 <60 <200 <200 <41 <41 -------- -------- ----<20 <20 ----<20 <20 -------- -------- ----<20 <20 -------- -------- -------- ----<20 <20 -------- -------- ----<20 <20 ----2.6 2.8----43 43 ----<2 <2 ----3.2 3 ----<2 <2----<2 <2 ----<2 <2 ----23 23 ------------4.9 5.2 ----20 20 ----<2 <2 ----6 6.2----<2 <2 ----<2 <2 ----<2 <2 ----65 64 ----<2 <2 ----<2 <2 ----<2 2.2 ----43 42 ----15 16 TR0795 Page 29 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. Perched Zone Perched Zone Perched Zone Perched Zone Perched Zone PZ-12 PZ-13 PZ-14 PZ-15 PZ-19RGW0619-PZ-12 GW0619-PZ-13 GW0619-PZ-14 GW0619-PZ-15 GW0619-PZ-19R 7/11/2019 6/25/2019 7/3/2019 6/25/2019 7/1/2019 ---------- LIQUID LIQUID LIQUID LIQUID LIQUID320-52282-1 320-51746-1 320-52030-1 320-51746-1 320-52028-1 320-52282-2 320-51746-6 320-52030-4 320-51746-3 320-52028-2 6,800 44,000 J 32,000 10,000 6,500 63,000 J 8,000 J 5,300 2,800 J 3,00013,000 20,000 J 14,000 9,000 J 6,100 3,000 3,200 J 2,800 J 1,300 J 720 990 3,300 J 2,100 J 1,100 J 740 360 4,600 J 3,100 J 1,000 J 450 J5,300 110,000 J 48,000 19,000 J 4,400 1,200 62,000 J 17,000 7,600 J 1,900 7,600 320 J <27 <27 UJ 31 770 1,300 J 620 550 J 2304803,200 J 980 970 J 3905,800 J 1,600 J 72 180 J 70 18 28 J 22 <15 UJ 5 450 290 J 380 130 J 76 150 200 J <24 <24 UJ 23210320 J 410 140 J 57 200 J 2,300 J 280 620 J 250 <46 <46 UJ <46 <46 UJ <4.6 <60 <60 UJ <60 <60 UJ <6 <41 <41 UJ <41 <41 UJ <4.1 ---------- ---------- <20 <20 <20 <20 <20 <20 <20 <20 <20 <20 ---------- ---------- <20 <20 <20 <20 <20 ---------- ---------- ---------- <20 <20 <20 <20 <20 ---------- ---------- <20 <20 <20 <20 <20 <2 <2 <2 <2 4.2672,400 460 160 63 <2 <2 <2 <2 <2 <2 3.1 <2 <2 3.7 <2 <2 <2 <2 <2<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 38 120 52 27 34 ----------3.2 <2 <2 <2 6.92455221131 <2 <2 <2 <2 <2 4.4 55 20 5.2 7.5 <2 UJ <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 150 910 310 160 90 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 3.5 <2 <2 <2 120 78 130 44 32 8.9 6.9 6.5 4.9 16 TR0795 Page 30 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. Perched Zone Perched Zone Black Creek Aquifer Perched Zone Perched Zone PZ-20R PZ-21R PZ-22 PZ-24 PZ-26GW0619-PZ-20R GW0619-PZ-21R GW0619-PZ-22 GW0619-PZ-24 GW0619-PZ-26 7/1/2019 7/2/2019 7/23/2019 6/25/2019 6/25/2019 ---------- LIQUID LIQUID LIQUID LIQUID LIQUID320-52028-1 320-52030-1 320-52722-1 320-51746-1 320-51746-1 320-52028-1 320-52030-1 320-52722-2 320-51746-10 320-51746-9 3,500 2,100 10,000 36,000 240 820 920 180,000 1,300 J <210 UJ2,600 1,800 38,000 4,100 J 190 J 240 190 J 3,800 810 J <58 UJ 190 220 J 340 710 J <79 UJ 160 J 150 J <67 190 J 58 J2,000 1,000 4,700 14,000 J <570 UJ 870 410 1,100 5,200 J 140 J <2 4.3 <53 <27 UJ <27 UJ 98 97 <61 180 J <30 UJ7588760 J 330 J <160 UJ3.2 15 J 1,900 <58 UJ <58 UJ <2 2.3 <31 <15 UJ <15 UJ 20 22 1,200 93 J <54 UJ <2 12 <49 <24 UJ <24 UJ172013082 J <28 UJ 38 41 680 280 J <70 UJ <2.3 <2.3 <92 <46 UJ <46 UJ <3 <3 <120 <60 UJ <60 UJ <2 <2 <82 <41 UJ <41 UJ ---------- ---------- <20 <20 <20 <20 <20 <20 <20 <20 <20 <20 ---------- ---------- <20 <20 <20 <20 <20 ---------- ---------- ---------- <20 <20 <20 <20 <20 ---------- ---------- <20 <20 <20 <20 <20 54 <2 2.3 5.5282014014015 <2 <2 <2 <2 <2 64 <2 <2 4.4 <2 <2 <2 <2 <2<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 36 27 33 25 19 ----------8.2 7.1 <2 <2 7.63829431627 <2 <2 <2 <2 <2 5.8 6.9 <2 2.4 3.2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 67 46 810 110 28 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 24 28 4 160 14 22 19 <2 3.9 23 TR0795 Page 31 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. Perched Zone Perched Zone Perched Zone Surficial Aquifer Perched Zone PZ-27 PZ-28 PZ-35 SMW-01 SMW-02GW0619-PZ-27 GW0619-PZ-28 GW0619-PZ-35 GW0619-SMW-01 GW0619-SMW-02 6/25/2019 6/25/2019 7/2/2019 6/25/2019 7/17/2019 ---------- LIQUID LIQUID LIQUID LIQUID LIQUID320-51746-1 320-51746-1 320-52028-1 320-51746-1 320-52454-1 320-51746-8 320-51746-7 320-52028-3 320-51746-12 320-52454-3 500 1,400 1,600 2,100 18,000 5,800 J 460 J 560 360 J 2,9001,300 J 1,300 J 1,500 980 J 20,000 310 J 160 J 260 210 J 3,200 150 J 190 J 390 54 J 1,100 120 J 46 J 410 J 3.1 J 56660 J 3,200 J 1,100 1,700 J 21,000 270 J 1,100 J 530 570 J 9,900 29 J <2 UJ 11 <2 UJ <27 180 J 54 J 140 55 J 120<160 UJ 150 J 92 J 110 J 810440 J <2.9 UJ 33 J <2 UJ <58 <15 UJ <2 UJ 2.1 <2 UJ 17 110 J 30 J 18 11 J 320 <24 UJ <2 UJ 6.1 <2 UJ <24 <28 UJ 16 J 29 4.9 J 67 <70 UJ 82 J 53 J 43 J 510 <46 UJ <2.3 UJ <2 <2 UJ <46 <60 UJ <3 UJ <2 <2 UJ <60 <41 UJ <2 UJ <2 <2 UJ <41 ---------- ---------- <20 <20 <20 <20 <20 <20 <20 <20 <20 <46 ---------- ---------- <20 <20 <20 <20 <20 ---------- ---------- ---------- <20 <20 <20 <20 <20 ---------- ---------- <20 <20 <20 <20 <27 3.6 <2 3.7 2 2.11228231788 <2 <2 <2 <2 <2.8 <2 2.6 4 <2 <2.7 <2 <2 <2 <2 <4<2 <2 <2 <2 <4.9 <2 <2 <2 <2 <2 11 11 24 9.2 41 ----------5.2 3 5.5 <2 <2 13 11 26 6.2 22 <2 <2 <2 <2 <2 2 4.3 9 <2 <2.4<2 <2 <2 <2 <4.1 <2 <2 <2 <2 <3.1 <2 <2 <2 <2 <2.7 27 35 43 25 230 <2 <2 <2 <2 <2.6 <2 <2 <2 <2 <12 <2 <2 <2 <2 <9.7 13 14 26 9.9 34 12 8.9 16 2.9 <4.8 TR0795 Page 32 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. Black Creek Aquifer Surficial Aquifer Surficial Aquifer Perched Zone SMW-03B SMW-04B SMW-05P SMW-07GW0619-SMW-03B GW0619-SMW-04B GW0619-SMW-05P GW0619-SMW-07 7/12/2019 7/12/2019 7/25/2019 7/8/2019 -------- LIQUID LIQUID LIQUID LIQUID320-52285-1 320-52285-1 320-52722-1 320-52171-1 320-52285-2 320-52285-3 320-52722-3 320-52171-5 12,000 13,000 19,000 12,000 460,000 41,000 220,000 75072,000 7,000 45,000 2,200 10,000 J 1,600 J 13,000 220 <790 430 4,700 280 <340 61 J 460 72 J56,000 4,800 27,000 2,700 11,000 990 5,100 770 430 46 1,200 <27 <300 56 210 1502,200 180 1,300 J 18027,000 550 6,500 <58 <150 <15 40 <15 4,800 450 3,100 <54 <240 <24 240 <24 <280 64 390 43 710 89 500 130 <460 <46 <92 <46 <600 <60 <120 <60 <410 <41 <82 <41 -------- -------- <20 <20 <20 <20 <24 <24 <20 <20 -------- -------- <20 <20 <20 <20 -------- -------- -------- <20 <20 <20 <20 -------- -------- <20 <20 <20 <20 2.4 2.9 3.4 52104212025 <2 <2 <2 <2 <2 <2 <2 <2 <2.1 <2.1 <2 <2<2.6 <2.6 <2 <2 <2 <2 <2 <2 41 46 140 48 --------<2 4.2 3.5 25 45 36 120 23 <2 <2 <2 <2 <2 <2 4.9 <2<2.2 <2.2 <2 <2 <2 <2 <2 <2 <2 <2 <2 3.9 600 95 260 27 <2 <2 <2 <2 <6.1 <6.1 <2 <2 <5.2 <5.2 <2 <2 120 5,800 6,900 1,300 <2.5 <2.5 2.7 2.2 TR0795 Page 33 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. Surficial Aquifer Surficial Aquifer Black Creek Aquifer Surficial Aquifer SMW-08B SMW-09 SMW-10 SMW-11GW0619-SMW-08B GW0619-SMW-09 GW0619-SMW-10 GW0619-SMW-11 7/16/2019 7/11/2019 6/27/2019 6/26/2019 -------- LIQUID LIQUID LIQUID LIQUID320-52322-1 320-52282-1 320-51903-1 320-51903-1 320-52322-3 320-52282-6 320-51903-4 320-51903-7 8,700 B 14,000 <4 4,000 260,000 1,800 <210 UJ 1,600 J47,000 3,100 <81 UJ 2,400 J 12,000 920 <58 UJ 400 J 2,900 890 <79 UJ 190 J 540 66 51 J 62 J7,700 4,800 780 J 2,900 J 2,800 1,400 <47 UJ 760 J 550 22,000 <27 UJ <27 UJ <300 560 <30 UJ 72 J<1,600 2,000 <160 UJ 180 J4,400 54,000 J <58 UJ <58 UJ <150 88 <15 UJ <15 UJ 2,900 260 <54 UJ <54 UJ <240 610 <24 UJ <24 UJ3002,000 <28 UJ 30 J <700 360 J <70 UJ 140 J <460 <46 <46 UJ <46 UJ <600 <60 <60 UJ <60 UJ <410 <41 <41 UJ <41 UJ -------- -------- <20 <20 <20 <20 <20 <20 <20 <20 -------- -------- <20 <20 <20 <20 -------- -------- -------- <20 <20 <20 <20 -------- -------- <20 <20 <20 <20 3.1 3.1 <2 <2110340<2 24 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2<2 <2 <2 <2 <2 <2 <2 <2 81 66 <2 9.8 --------4.9 16 <2 <2 34 79 <2 7.8 <2 <2 <2 <2 4.2 <2 <2 <2<2 <2 UJ <2 <2 <2 <2 <2 <2 <2 2.6 <2 <2 550 200 <2 29 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 360 91 <2 34 6.1 <2 <2 <2 TR0795 Page 34 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. Black Creek Aquifer ---- SMW-12 EB EBGW0619-SMW-12 GW0619-EQBLK-062719 GW0619-EQBLK-070819 7/11/2019 6/27/2019 7/8/2019 --Equipment Blank Equipment Blank LIQUID LIQUID LIQUID320-52290-1 320-51903-1 320-52171-1 320-52290-1 320-51903-5 320-52171-1 1,700 <4 <4 3,900 <210 UJ <51,300 <81 UJ <2 53 <58 UJ <2 <7.9 <79 UJ <2 <3.4 <34 UJ <21,900 <570 UJ <10 440 <47 UJ <20 <2.7 <27 UJ <2 <3 <30 UJ <2120<160 UJ <2 <5.8 <58 UJ <2 <2 <15 UJ <2 38 <54 UJ <2 <2.4 <24 UJ <2 <2.8 <28 UJ <2 110 <70 UJ <2 <4.6 <46 UJ <2 <6 <60 UJ <2 <4.1 <41 UJ <2 ------ ------ <20 <20 <20 <20 <20 <20 ------ ------ <20 <20 <20 ------ ------ ------ <20 <20 <20 ------ ------ <20 <20 <20 <2 <2 <219<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2<2 <2 <2 <2 <2 <2 <2 <2 <2 ------<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 41 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 TR0795 Page 35 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. ------ EB EB EBGW0619-EQBLK-070819-02 GW0619-EQBLK-070919 GW0619-EQBLK-071019 7/8/2019 7/9/2019 7/10/2019 Equipment Blank Equipment Blank Equipment Blank LIQUID LIQUID LIQUID320-52171-1 320-52149-1 320-52165-1 320-52171-2 320-52149-3 320-52165-4 <4 <4 <4 <5 6.7 <5<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2<10 <10 <10 <20 <20 <20 <2 <2 <2 <2 <2 <2<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 ------ ------ <20 <20 <20 <20 <20 <20 ------ ------ <20 <20 <20 ------ ------ ------ <20 <20 <20 ------ ------ <20 <20 <20 <2 <2 <2<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2<2 <2 <2 <2 <2 <2 <2 <2 <2 ------<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 TR0795 Page 36 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. -------- EB EB EB EBGW0619-EB-02-071119 GW0619-EB-071119 GW0619-EB-071219 GW0619-EB-02-071519 7/11/2019 7/11/2019 7/12/2019 7/15/2019 Equipment Blank Equipment Blank Equipment Blank Equipment Blank LIQUID LIQUID LIQUID LIQUID320-52290-1 320-52290-1 320-52285-1 320-52285-1 320-52290-3 320-52290-2 320-52285-1 320-52285-5 <4 <4 <4 <4 <5 <5 <5 <5<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 UJ<10 <10 <10 <10 <20 <20 <20 <20 <2 <2 <2 <2 <2 <2 <2 <2<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 -------- -------- <20 <20 <20 <20 <20 <20 <20 <20 -------- -------- <20 <20 <20 <20 -------- -------- -------- <20 <20 <20 <20 -------- -------- <20 <20 <20 <20 <2 <2 <2 <2<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 --------<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 TR0795 Page 37 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. -------- EB EB EB EBGW0619-EB-071519 GW0619-EB-01-071619 GW0619-EB-02-071619 GW0619-EB-071719 7/15/2019 7/16/2019 7/16/2019 7/17/2019 Equipment Blank Equipment Blank Equipment Blank Equipment Blank LIQUID LIQUID LIQUID LIQUID320-52285-1 320-52322-1 320-52322-1 320-52464-1 320-52285-4 320-52322-5 320-52322-6 320-52464-5 <4 72 <4 <4 <5 <5 <5 <5<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2<10 <10 <10 <10 <20 <20 <20 <20 <2 <2 <2 <2 <2 <2 <2 <2<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 -------- -------- <20 <20 <20 <20 <20 <20 <20 <20 -------- -------- <20 <20 <20 <20 -------- -------- -------- <20 <20 <20 <20 -------- -------- <20 <20 <20 <20 <2 <2 <2 <2<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 --------<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 TR0795 Page 38 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. -------- EB EB EB EBGW0619-EB-071819 GW0619-EB-071919 GW0619-EQBLK-072219 EQBLK-090919-01 7/18/2019 7/19/2019 7/22/2019 9/9/2019 Equipment Blank Equipment Blank Equipment Blank Equipment Blank LIQUID LIQUID LIQUID LIQUID320-52464-1 320-52624-1 320-52621-1 320-54174-1 320-52464-3 320-52624-1 320-52621-4 320-54174-2 <4 <4 <4 <4 <5 <210 <210 <210<2 <81 <81 <81 <2 <58 <58 <58 <2 <79 <79 <79 <2 <34 <34 <34 UJ<10 <570 <570 <570 <20 <47 <47 <47 <2 <27 <27 <27 <2 <30 <30 <30<2 <160 <160 <160 <2 <58 <58 <58 <2 <15 <15 <15 <2 <54 <54 <54 <2 <24 <24 <24 <2 <28 <28 <28 <2 <70 <70 <70 <2 <46 <46 <46 <2 <60 <60 <60 <2 <41 <41 <41 ------<2 ------<2 <20 <20 <20 <20 <20 <20 <20 <20 ------<2 ------<4 <20 <20 <20 <20 ------<2 ------<2.1 ------<2.1 <20 <20 <20 <20 ------<2 ------<2 <20 <20 <20 <20 <2 <2 <2 <2<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 ------<2<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 TR0795 Page 39 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. -------- EB EB EB EBEQBLK-090919-02 EQBLK-091019-01 EQBLK-091019-02 EB-091919 9/9/2019 9/10/2019 9/10/2019 9/19/2019 Equipment Blank Equipment Blank Equipment Blank Equipment Blank LIQUID LIQUID LIQUID LIQUID320-54174-1 320-54176-1 320-54176-1 320-54522-1 320-54174-3 320-54176-2 320-54176-3 320-54522-2 <4 <4 <4 <4 <210 <210 <210 <5<81 <81 <81 <2 <58 <58 <58 <2 <79 <79 <79 <2 <34 UJ <34 <34 UJ <2<570 780 570 <10 <47 <47 <47 <20 <27 <27 <27 <2 <30 <30 <30 <2<160 <160 <160 <2 <58 <58 <58 <2 <15 <15 <15 <2 <54 <54 <54 <2 <24 <24 <24 <2 <28 <28 <28 <2 <70 <70 <70 <2 <46 <46 <46 <2 <60 <60 <60 <2 <41 <41 <41 <2 <2 <2 <2 <2 <2 <2 <2 -- <20 <20 <20 <20 <20 <20 <20 <20 <2 <2 <2 <2 <4 <4 <4 <4 <20 <20 <20 <20 <2 <2 <2 -- <2.1 <2.1 <2.1 -- <2.1 <2.1 <2.1 -- <20 <20 <20 <20 <2 <2 <2 <2 <2 <2 <2 <2 <20 <20 <20 <20 <2 <2 <2 <2<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 TR0795 Page 40 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. ------ EB EB EBGW4Q19-EQBLK-01-102319 GW4Q19-EQBLK-02-102319GW4Q19-EQBLK-01-102919 10/23/2019 10/23/2019 10/29/2019 Equipment Blank Equipment Blank Equipment Blank LIQUID LIQUID LIQUID320-55683-1 320-55683-1 320-55854-1 320-55683-9 320-55683-4 320-55854-7 <86 <86 <2 <210 <210 <5<81 <81 <2 <58 <58 <2 <79 <79 <2 <34 <34 <2<570 <570 <10 <47 <47 <20 <27 <27 <2 <30 <30 <2<160 <160 <2 <58 <58 <2 <15 <15 <2 <54 <54 <2 <24 <24 <2 <28 <28 <2 <70 <70 <2 <46 <46 <2 <60 <60 <2 <41 <41 <2 ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------------ ------ ------ ------------ ------ ------ ------------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ TR0795 Page 41 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. ------ EB EB EBGW4Q19-EQBLK-02-102919GW4Q19-EQBLK-01-103019GW4Q19-EQBLK-02-103019 10/29/2019 10/30/2019 10/30/2019 Equipment Blank Equipment Blank Equipment Blank LIQUID LIQUID LIQUID320-55854-1 320-55860-1 320-55860-1 320-55854-8 320-55860-7 320-55860-8 <2 <2 <2 <5 <5 <5<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2<10 <10 <10 <20 <20 <20 <2 <2 <2 <2 <2 <2<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------------ ------ ------ ------------ ------ ------ ------------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ TR0795 Page 42 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. ------ EB EB EBGW4Q19-EQBLK-01-103119GW4Q19-EQBLK-02-103119GW4Q19-EQBLK-01-110119 10/31/2019 10/31/2019 11/1/2019 Equipment Blank Equipment Blank Equipment Blank LIQUID LIQUID LIQUID320-55909-1 320-55909-1 320-56112-1 320-55909-5 320-55909-6 320-56112-2 2.4 <2 <2 <5 <5 <5<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 UJ<10 <10 <10 <20 <20 <20 <2 <2 <2 <2 <2 <2<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------------ ------ ------ ------------ ------ ------ ------------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ TR0795 Page 43 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. ------ EB EB EBGW4Q19-EQBLK-02-110419GW4Q19-EQBLK-02-110519GW4Q19-EQBLK-02-110619 11/4/2019 11/5/2019 11/6/2019 Equipment Blank Equipment Blank Equipment Blank LIQUID LIQUID LIQUID320-56112-1 320-56112-1 320-56117-1 320-56112-5 320-56112-9 320-56117-2 <2 <2 <2 <5 <5 <5<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2<10 <10 <10 <20 <20 <20 <2 <2 <2 <2 <2 <2<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------------ ------ ------ ------------ ------ ------ ------------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ TR0795 Page 44 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. ------ EB EB EBGW4Q19-EQBLK-03-110619GW4Q19-EQBLK-02-110819GW4Q19-EQBLK-04-110819 11/6/2019 11/8/2019 11/8/2019 Equipment Blank Equipment Blank Equipment Blank LIQUID LIQUID LIQUID320-56117-1 320-56173-1 320-56173-1 320-56117-3 320-56173-5 320-56173-6 <2 <2 <2 <5 <5 <5<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2<10 <10 <10 <20 <20 <20 <2 <2 <2 <2 <2 <2<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------------ ------ ------ ------------ ------ ------ ------------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ TR0795 Page 45 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. ------ EQBLK EQBLK EQBLKGW0619-EQBLK-061919 GW0619-EQBLK-062019 GW0619-EQBLK-062119 6/19/2019 6/20/2019 6/21/2019 Equipment Blank Equipment Blank Equipment Blank LIQUID LIQUID LIQUID320-51662-1 320-51662-1 320-51662-1 320-51662-4 320-51662-5 320-51662-6 <4 <4 <4 <5 UJ <5 UJ <5 UJ<2 UJ <2 UJ <2 UJ <2 UJ <2 UJ <2 UJ <2 UJ <2 UJ <2 UJ <5 UJ <5 UJ <5 UJ<10 UJ <10 UJ <10 UJ <20 UJ <20 UJ <20 UJ <2 UJ <2 UJ <2 UJ <2 UJ <2 UJ <2 UJ<2 UJ <2 UJ <2 UJ <2 UJ <2 UJ <2 UJ <2 UJ <2 UJ <2 UJ <2 UJ <2 UJ <2 UJ <2 UJ <2 UJ <2 UJ <2 UJ <2 UJ <2 UJ <2 UJ <2 UJ <2 UJ <2 UJ <2 UJ <2 UJ <2 UJ <2 UJ <2 UJ <2 UJ <2 UJ <2 UJ ------ ------ ------ ------ <2 UJ <2 UJ <2 UJ <2 UJ <2 UJ <2 UJ ------ ------ ------ ------ ------ <2 UJ <2 UJ <2 UJ <2 UJ <2 UJ <2 UJ ------ <2 <2 <2------ ------ <2 <2 <2 ------<2 <2 <2 ------ <2 <2 <2 ------<2 <2 <2 <2 <2 <2 ------ <2 <2 <2 ------ ------ ------ <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 TR0795 Page 46 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. ------ EQBLK EQBLK EQBLKGW0619-EQBLK GW0619-EQBLK-062619 GW0619-EQBLK-062819 6/25/2019 6/26/2019 6/28/2019 Equipment Blank Equipment Blank Equipment Blank LIQUID LIQUID LIQUID320-51746-1 320-51904-1 320-51904-1 320-51746-1 320-51904-5 320-51904-6 <4 <4 <4 <5 UJ <210 UJ <210<2 UJ <81 UJ <81 <2 UJ <58 UJ <58 <2 UJ <79 UJ <79 <2 UJ 58 J 59<10 UJ <570 UJ <570 <20 UJ <47 UJ <47 <2 UJ <27 UJ <27 <2 UJ <30 UJ <30<2 UJ <160 UJ <160 <2 UJ <58 UJ <58 <2 UJ <15 UJ <15 <2 UJ <54 UJ <54 <2 UJ <24 UJ <24 <2 UJ <28 UJ <28 <2 UJ <70 UJ <70 <2 UJ <46 UJ <46 <2 UJ <60 UJ <60 <2 UJ <41 UJ <41 ------ ------ <20 <20 <20 <20 <20 <20 ------ ------ <20 <20 <20 ------ ------ ------ <20 <20 <20 ------ ------ <20 <20 <20 <2 <2 <2<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2<2 <2 <2 <2 <2 <2 <2 <2 <2 ------<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 TR0795 Page 47 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. ------ EQBLK EQBLK EQBLKGW0619-EQBLK-070119 GW0619-EQBLK-070219 GW0619-EQBLK-070319 7/1/2019 7/2/2019 7/3/2019 Equipment Blank Equipment Blank Equipment Blank LIQUID LIQUID LIQUID320-52028-1 320-52028-1 320-52030-1 320-52028-5 320-52028-6 320-52030-5 <4 <4 <4 <5 <5 <5<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 UJ<10 <10 <10 <20 <20 <20 <2 <2 <2 <2 <2 <2<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 ------ ------ <20 <20 <20 <20 <20 <20 ------ ------ <20 <20 <20 ------ ------ ------ <20 <20 <20 ------ ------ <20 <20 <20 <2 <2 <2<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2<2 <2 <2 <2 <2 <2 <2 <2 <2 ------<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 TR0795 Page 48 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. -------- EQBLK EQBLK EQBLK EQBLKGW0619-EB-02-072319 GW0619-EB-072519 EB-09119-01 EB-09119-02 7/23/2019 7/25/2019 9/11/2019 9/11/2019 Equipment Blank Equipment Blank Equipment Blank Equipment Blank LIQUID LIQUID LIQUID LIQUID320-52722-1 320-52722-1 320-54299-1 320-54299-1 320-52722-5 320-52722-6 320-54299-2 320-54299-3 <4 <4 <4 <4 <210 <210 <5 <5<81 <81 <2 <2 <58 <58 <2 <2 <79 <79 <2 <2 <34 <34 <2 <2<570 <570 <10 <10 <47 <47 <20 <20 <27 <27 <2 <2 <30 <30 <2 <2<160 <160 <2 <2 <58 <58 <2 <2 <15 <15 <2 <2 <54 <54 <2 <2 <24 <24 <2 <2 <28 <28 <2 <2 <70 <70 <2 <2 <46 <46 <2 <2 <60 <60 <2 <2 <41 <41 <2 <2 ----<2 <2 ----<2 <2 <20 <20 <20 <20 <20 <20 <20 <20 ----<2 <2 ----<4 <4 <20 <20 <20 <20 ----<2 <2 ----<2.1 <2.1 ----<2.1 <2.1 <20 <20 <20 <20 ----<2 <2 ----<2 <2 <20 <20 <20 <20 <2 <2 <2 <2<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 ----<2 <2<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 TR0795 Page 49 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. -------- EQBLK EQBLK EQBLK EQBLKEB-091219-01 EB-091219-02 EB-091319 GW4Q19-EQBLK-01-101819 9/12/2019 9/12/2019 9/13/2019 10/18/2019 Equipment Blank Equipment Blank Equipment Blank Equipment Blank LIQUID LIQUID Liquid LIQUID320-54294-1 320-54294-1 320-54328-1 320-55686-1 320-54294-1 320-54294-2 320-54328-1 320-55686-2 <4 <4 <4 2.3 <5 <5 <5 <5<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2<10 <10 <10 <10 <20 <20 <20 <20 <2 <2 <2 <2 <2 <2 <2 <2<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 -- <2 <2 <2 -- <20 <20 <20 -- <20 <20 <20 -- <2 <2 <2 -- <4 <4 <4 -- <20 <20 <20 -- <2 <2 <2 -- <2.1 <2.1 <2.1 -- <2.1 <2.1 <2.1 -- <20 <20 <20 -- <2 <2 <2 -- <2 <2 <2 -- <20 <20 <20 -- <2 <2 <2 --<2 <2 <2 -- <2 <2 <2 -- <2 <2 <2 -- <2 <2 <2 --<2 <2 <2 -- <2 <2 <2 -- <2 <2 <2 -- <2 <2 <2 --<2 <2 <2 -- <2 <2 <2 -- <2 <2 <2 -- <2 <2 <2 -- <2 <2 <2 -- <2 <2 <2 -- <2 <2 <2 -- <2 <2 <2 -- <2 <2 <2 -- <2 <2 <2 -- <2 <2 <2 -- <2 <2 <2 -- <2 <2 <2 -- TR0795 Page 50 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. -------- EQBLK EQBLK FBLK FBLKGW4Q19-EQBLK-01-102819GW4Q19-EQBLK-02-102819 GW0619-FB-01-072319 FBLK-090919 10/28/2019 10/28/2019 7/23/2019 9/9/2019 Equipment Blank Equipment Blank Field Blank Field Blank LIQUID LIQUID LIQUID LIQUID320-55757-1 320-55757-1 320-52722-1 320-54174-1 320-55757-1 320-55757-2 320-52722-4 320-54174-4 2.1 3.7 <4 <4 <5 <5 <210 <210<2 <2 <81 <81 <2 <2 <58 <58 <2 <2 <79 <79 <2 <2 <34 <34 UJ<10 <10 <570 <570 <20 <20 <47 <47 <2 <2 <27 <27 <2 <2 <30 <30<2 <2 <160 <160 <2 <2 <58 <58 <2 <2 <15 <15 <2 <2 <54 <54 <2 <2 <24 <24 <2 <2 <28 <28 <2 <2 <70 <70 <2 <2 <46 <46 <2 <2 <60 <60 <2 <2 <41 <41 ------<2 ------<2 ----<20 <20 ----<20 <20 ------<2 ------<4 ----<20 <20 ------<2 ------<2.1 ------<2.1 ----<20 <20 ------<2 ------<2 ----<20 <20 ----<2 <2----<2 <2 ----<2 <2 ----<2 <2 ----<2 <2----<2 <2 ----<2 <2 ----<2 <2 ------<2----<2 <2 ----<2 <2 ----<2 <2 ----<2 <2 ----<2 <2 ----<2 <2 ----<2 <2 ----<2 <2 ----<2 <2 ----<2 <2 ----<2 <2 ----<2 <2 ----<2 <2 TR0795 Page 51 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. ---------- FBLK FBLK FBLK FBLK FBLKFB-091019-01 FB-091119 FB-091219 FB-091319 GW4Q19-FBLK-01-101819 9/10/2019 9/11/2019 9/12/2019 9/13/2019 10/18/2019 Field Blank Field Blank Field Blank Field Blank Field Blank LIQUID LIQUID LIQUID Liquid LIQUID320-54176-1 320-54299-1 320-54294-1 320-54328-1 320-55686-1 320-54176-4 320-54299-1 320-54294-3 320-54328-4 320-55686-3 <4 <4 <4 <4 4.8 <210 <5 <5 <5 <5<81 <2 <2 <2 <2 <58 <2 <2 <2 <2 <79 <2 <2 <2 <2 <34 <2 <2 <2 <2570<10 <10 <10 <10 <47 <20 <20 <20 <20 <27 <2 <2 <2 <2 <30 <2 <2 <2 <2<160 <2 <2 <2 <2 <58 <2 <2 <2 <2 <15 <2 <2 <2 <2 <54 <2 <2 <2 <2 <24 <2 <2 <2 <2 <28 <2 <2 <2 <2 <70 <2 <2 <2 <2 <46 <2 <2 <2 <2 <60 <2 <2 <2 <2 <41 <2 <2 <2 <2 <2 <2 <2 <2 -- <2 <2 <2 <2 -- <20 <20 <20 <20 -- <20 <20 <20 <20 -- <2 <2 <2 <2 -- <4 <4 <4 <4 -- <20 <20 <20 <20 -- <2 <2 <2 <2 -- <2.1 <2.1 <2.1 <2.1 -- <2.1 <2.1 <2.1 <2.1 -- <20 <20 <20 <20 -- <2 <2 <2 <2 -- <2 <2 <2 <2 -- <20 <20 <20 <20 -- <2 <2 <2 <2 --<2 <2 <2 <2 -- <2 <2 <2 <2 -- <2 <2 <2 <2 -- <2 <2 <2 <2 --<2 <2 <2 <2 -- <2 <2 <2 <2 -- <2 <2 <2 <2 -- <2 <2 <2 <2 --<2 <2 <2 <2 -- <2 <2 <2 <2 -- <2 <2 <2 <2 -- <2 <2 <2 <2 --<2 <2 <2 <2 -- <2 <2 <2 <2 -- <2 <2 <2 <2 -- <2 <2 <2 <2 -- <2 <2 <2 <2 -- <2 <2 <2 <2 -- <2 <2 <2 <2 -- <2 <2 <2 <2 -- <2 <2 <2 <2 -- TR0795 Page 52 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. ------ FBLK FBLK FBLKGW4Q19-FBLK-01-102319 GW4Q19-FBLK-01-102819 GW4Q19-FBLK-01-102919 10/23/2019 10/28/2019 10/29/2019 Field Blank Field Blank Field Blank LIQUID LIQUID LIQUID320-55683-1 320-55757-1 320-55854-1 320-55683-10 320-55757-5 320-55854-6 <86 <2 <2 <210 <5 <5<81 <2 <2 <58 <2 <2 <79 <2 <2 <34 <2 <2 UJ<570 <10 <10 <47 <20 <20 <27 <2 <2 <30 <2 <2<160 <2 <2 <58 <2 <2 <15 <2 <2 <54 <2 <2 <24 <2 <2 <28 <2 <2 <70 <2 <2 <46 <2 <2 <60 <2 <2 <41 <2 <2 ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------------ ------ ------ ------------ ------ ------ ------------ ------ ------ ------------ ------ ------ ------ ------ ------ ------ ------ ------ TR0795 Page 53 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. ------ FBLK FBLK FBLKGW4Q19-FBLK-01-103019 GW4Q19-FBLK-01-103119 GW4Q19-FBLK-01-110119 10/30/2019 10/31/2019 11/1/2019 Field Blank Field Blank Field Blank LIQUID LIQUID LIQUID320-55860-1 320-55909-1 320-56112-1 320-55860-6 320-55909-7 320-56112-1 <2 <2 <2 <5 <5 <5<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 UJ<10 <10 <10 <20 <20 <20 <2 <2 <2 <2 <2 <2<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------------ ------ ------ ------------ ------ ------ ------------ ------ ------ ------------ ------ ------ ------ ------ ------ ------ ------ ------ TR0795 Page 54 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. ------ FBLK FBLK FBLKGW4Q19-FBLK-01-110419 GW4Q19-FBLK-01-110519 GW4Q19-FBLK-01-110619 11/4/2019 11/5/2019 11/6/2019 Field Blank Field Blank Field Blank LIQUID LIQUID LIQUID320-56112-1 320-56112-1 320-56117-1 320-56112-6 320-56112-8 320-56117-1 <2 UJ <2 <2 <5 <5 <5<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2<10 <10 <10 <20 <20 <20 <2 <2 <2 <2 <2 <2<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------------ ------ ------ ------------ ------ ------ ------------ ------ ------ ------------ ------ ------ ------ ------ ------ ------ ------ ------ TR0795 Page 55 of 56 December 2019 TABLE 9-3 ONSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location IDField Sample ID Sample Date QA/QC Sample MatrixSDG Lab Sample ID Table 3+ Lab SOP (ng/L) Hfpo Dimer AcidPFMOAA PFO2HxA PFO3OA PFO4DAPFO5DA PMPA PEPA PFESA-BP1PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 11Cl-PF3OUdS 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol 6:2 Fluorotelomer sulfonate 9Cl-PF3ONS ADONA NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic AcidPerfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS)Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA)Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic AcidPerfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection AgencyJ - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per literQA/QC - Quality assurance/ quality control SDG - Sample Delivery Group SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. -- FBLKGW4Q19-FBLK-01-110819 11/8/2019 Field Blank LIQUID320-56173-1 320-56173-4 <2 <5<2 <2 <2 <2<10 <20 <2 <2<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 -- -- -- -- -- -- -- -- -- -- -- -- -- -- ---- -- -- ---- -- -- ---- -- -- ---- -- -- -- -- -- -- -- -- TR0795 Page 56 of 56 December 2019 TABLE A 9-4 OFFSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Black Creek Aquifer Black Creek Aquifer Black Creek Aquifer Location ID BLADEN-1D BLADEN-1D BLADEN-1D Field Sample ID BLADEN-1D-082719 DUP-1-082719 GW4Q19-BLADEN-1D-110719 Sample Date 8/27/2019 8/27/2019 11/7/2019 QA/QC --Field Duplicate -- Sample Delivery Group 280-127778-1 280-127778-1 320-56173-1 Lab Sample ID 280-127778-1 280-127778-2 320-56173-3 Table 3+ Lab SOP (ng/L) HFPO-DA (EPA Method 537 Mod)180 190 140 PFMOAA 33 30 24 J PFO2HxA 81 80 87 PFO3OA 6.2 6.2 7.3 PFO4DA <2 <2 <2 PFO5DA <2 <2 <2 PMPA 330 330 370 PEPA 110 110 110 PFESA-BP1 <2 <2 <2 PFESA-BP2 0.48 J 0.48 J <2 Byproduct 4 13 J 11 J 7 Byproduct 5 <2 <2 <2 Byproduct 6 <2 <2 <2 NVHOS 2.2 1.9 J 2 EVE Acid <2 <2 <2 Hydro-EVE Acid <2 0.31 J <2 R-EVE 6.2 5.7 4.2 PES <2 <2 <2 PFECA B <2 <2 <2 PFECA-G <2 <2 <2 Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate <1.7 <1.7 -- 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS)<17 <17 -- 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS)<17 <17 -- 6:2 Fluorotelomer sulfonate <17 <17 -- ADONA <1.7 <1.7 -- F-53B Major <1.7 <1.7 -- F-53B Minor <1.7 <1.7 -- NaDONA <1.7 <1.7 -- N-ethyl perfluorooctane sulfonamidoacetic acid <17 <17 -- N-methyl perfluorooctane sulfonamidoacetic acid <17 <17 -- Perfluorobutane Sulfonic Acid 0.43 J 0.39 J -- Perfluorobutanoic Acid 3.6 3.6 -- Perfluorodecane Sulfonic Acid <1.7 <1.7 -- Perfluorodecanoic Acid <1.7 <1.7 -- Perfluorododecane sulfonic acid (PFDoS)<1.7 <1.7 -- Perfluorododecanoic Acid <1.7 <1.7 -- Perfluoroheptane sulfonic acid (PFHpS)<1.7 <1.7 -- Perfluoroheptanoic Acid 0.27 J 0.26 J -- Perfluorohexadecanoic acid (PFHxDA)<1.7 <1.7 -- Perfluorohexane Sulfonic Acid 0.33 B 0.32 B -- Perfluorohexanoic Acid 1.1 J 1.1 J -- Perfluorononanesulfonic acid <1.7 <1.7 -- Perfluorononanoic Acid <1.7 <1.7 -- Perfluorooctadecanoic acid <1.7 <1.7 -- Perfluorooctane Sulfonamide 0.48 J <1.7 -- Perfluoropentane sulfonic acid (PFPeS)<1.7 <1.7 -- Perfluoropentanoic Acid 3.9 3.8 -- Perfluorotetradecanoic Acid 0.36 B <1.7 -- Perfluorotridecanoic Acid <1.7 <1.7 -- Perfluoroundecanoic Acid <1.7 <1.7 -- PFOA <1.7 <1.7 -- PFOS <1.7 <1.7 -- 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol <1.7 <1.7 -- 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol <3.3 <3.3 -- N-ethylperfluoro-1-octanesulfonamide <1.7 <1.7 -- N-methyl perfluoro-1-octanesulfonamide <1.7 <1.7 -- Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection Agency J - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per liter QA/QC - Quality assurance/ quality control SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. TR0795 Page 1 of 24 December 2019 TABLE A 9-4 OFFSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location ID Field Sample ID Sample Date QA/QC Sample Delivery Group Lab Sample ID Table 3+ Lab SOP (ng/L) HFPO-DA (EPA Method 537 Mod) PFMOAA PFO2HxA PFO3OA PFO4DA PFO5DA PMPA PEPA PFESA-BP1 PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 6:2 Fluorotelomer sulfonate ADONA F-53B Major F-53B Minor NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic Acid Perfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS) Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA) Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic Acid Perfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection Agency J - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per liter QA/QC - Quality assurance/ quality control SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. Surficial Aquifer Surficial Aquifer Black Creek Aquifer BLADEN-2S BLADEN-2S BLADEN-2D BLADEN-2S-082719 GW4Q19-BLADEN-2S-102219 BLADEN-2D-082719 8/27/2019 10/22/2019 8/27/2019 ------ 280-127778-1 320-55686-1 280-127778-1 280-127778-3 320-55686-4 280-127778-4 4.6 8.5 B 11 11 22 J <5 19 J 31 6.3 1.8 J <2 0.96 J 1.5 J <2 <2 0.53 <2 <2 68 60 77 J 6.8 J <20 12 J <2 <2 <2 14 11 3.9 <2 5.2 <2 <2 <2 <2 <2 <2 <2 1.5 J <2 <2 <2 <2 <2 0.36 <2 <2 <2 3.5 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <1.7 --<1.7 <17 --<17 <17 --<17 <17 --<17 <1.8 --<1.8 <1.7 --<1.7 <1.7 --<1.7 <1.8 --<1.8 <17 --<17 <17 --<17 1.3 J --1.5 J 3.4 --2.1 J <1.7 --<1.7 <1.7 --<1.7 <1.7 --<1.7 <1.7 --<1.7 0.26 J --<1.7 0.43 J --0.22 J <1.7 --<1.7 1.1 B --0.52 B 0.62 J --<1.7 <1.7 --<1.7 <1.7 --<1.7 <1.7 --<1.7 0.48 J --<1.7 <1.7 --<1.7 0.98 J --0.46 J 0.24 B --<1.7 <1.7 --<1.7 <1.7 --<1.7 1.3 J --<1.7 3.7 --0.6 J <1.7 --<1.7 <3.4 --<3.4 <1.7 --<1.7 <1.7 --<1.7 TR0795 Page 2 of 24 December 2019 TABLE A 9-4 OFFSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location ID Field Sample ID Sample Date QA/QC Sample Delivery Group Lab Sample ID Table 3+ Lab SOP (ng/L) HFPO-DA (EPA Method 537 Mod) PFMOAA PFO2HxA PFO3OA PFO4DA PFO5DA PMPA PEPA PFESA-BP1 PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 6:2 Fluorotelomer sulfonate ADONA F-53B Major F-53B Minor NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic Acid Perfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS) Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA) Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic Acid Perfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection Agency J - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per liter QA/QC - Quality assurance/ quality control SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. Black Creek Aquifer Surficial Aquifer Surficial Aquifer BLADEN-2D BLADEN-3S BLADEN-3S GW4Q19-Bladen-2D-102919 BLADEN-3S-082819 GW4Q19-BLADEN-3S-102819 10/29/2019 8/28/2019 10/28/2019 ------ 320-55854-1 280-127778-1 320-55757-1 320-55854-5 280-127778-5 320-55757-3 <2 12 29 <5 15 21 <2 31 59 <2 3.8 5.7 <2 3.1 3.9 <2 UJ 0.98 J <2 <10 39 93 <20 5.6 J <20 <2 <2 <2 <2 3.6 8.3 <2 1.9 J <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 0.46 J <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 --<1.7 -- --<17 -- --<17 -- --<17 -- --<1.8 -- --<1.7 -- --<1.7 -- --<1.8 -- --<17 -- --<17 -- --0.26 J -- --2.1 -- --<1.7 -- --<1.7 -- --<1.7 -- --<1.7 -- --<1.7 -- --0.81 J -- --<1.7 -- --0.27 B -- --0.65 J -- --<1.7 -- --0.38 J -- --<1.7 -- --0.33 J -- --<1.7 -- --0.93 J -- --<1.7 -- --<1.7 -- --<1.7 -- --2 -- --2.2 -- --<1.7 -- --<3.4 -- --<1.7 -- --<1.7 -- TR0795 Page 3 of 24 December 2019 TABLE A 9-4 OFFSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location ID Field Sample ID Sample Date QA/QC Sample Delivery Group Lab Sample ID Table 3+ Lab SOP (ng/L) HFPO-DA (EPA Method 537 Mod) PFMOAA PFO2HxA PFO3OA PFO4DA PFO5DA PMPA PEPA PFESA-BP1 PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 6:2 Fluorotelomer sulfonate ADONA F-53B Major F-53B Minor NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic Acid Perfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS) Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA) Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic Acid Perfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection Agency J - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per liter QA/QC - Quality assurance/ quality control SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. Black Creek Aquifer Black Creek Aquifer Surficial Aquifer BLADEN-3D BLADEN-3D BLADEN-4S BLADEN-3D-082819 GW4Q19-BLADEN-3D-102819 BLADEN-4S-082819 8/28/2019 10/28/2019 8/28/2019 ------ 280-127778-1 320-55757-1 280-127778-1 280-127778-6 320-55757-4 280-127778-10 2.2 J <2 <3.7 <5 <5 <5 1.3 J <2 3 <2 <2 <2 <2 <2 <2 <2 <2 <2 14 <10 12 2.1 J <20 <20 <2 <2 <2 0.63 J <2 1.5 J <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <1.8 --<1.8 <18 --<18 <18 --<18 <18 --<18 <1.9 --<1.9 <1.8 --<1.8 <1.8 --<1.8 <1.9 --<1.9 <18 --<18 <18 --<18 0.33 J --0.5 J <1.8 --1.1 J <1.8 --<1.8 <1.8 --<1.8 <1.8 --<1.8 <1.8 --<1.8 <1.8 --<1.8 <1.8 --0.48 J <1.8 --<1.8 0.26 B --0.76 B <1.8 --0.75 J <1.8 --<1.8 <1.8 --<1.8 <1.8 --<1.8 <1.8 --<1.8 <1.8 --<1.8 <1.8 --0.8 J <1.8 --<1.8 <1.8 --<1.8 <1.8 --<1.8 <1.8 --1.5 J <1.8 --4.8 <1.8 --<1.8 <3.5 --<3.7 <1.8 --<1.8 <1.8 --<1.8 TR0795 Page 4 of 24 December 2019 TABLE A 9-4 OFFSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location ID Field Sample ID Sample Date QA/QC Sample Delivery Group Lab Sample ID Table 3+ Lab SOP (ng/L) HFPO-DA (EPA Method 537 Mod) PFMOAA PFO2HxA PFO3OA PFO4DA PFO5DA PMPA PEPA PFESA-BP1 PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 6:2 Fluorotelomer sulfonate ADONA F-53B Major F-53B Minor NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic Acid Perfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS) Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA) Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic Acid Perfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection Agency J - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per liter QA/QC - Quality assurance/ quality control SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. Surficial Aquifer Black Creek Aquifer Black Creek Aquifer BLADEN-4S BLADEN-4D BLADEN-4D GW4Q19-BLADEN-4S-102219 BLADEN-4D-082819 GW4Q19-BLADEN-4D-102519 10/22/2019 8/28/2019 10/25/2019 ------ 320-55686-1 280-127778-1 320-55754-1 320-55686-6 280-127778-7 320-55754-1 2.7 B <3.6 <2 <5 UJ <5 UJ <5 UJ 3.1 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 UJ <2 <10 9.2 J <10 <20 <20 <20 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 --<1.8 -- --<18 -- --<18 -- --<18 -- --<1.9 -- --<1.7 -- --<1.7 -- --<1.9 -- --<18 -- --<18 -- --<1.8 -- --<1.8 -- --<1.8 -- --<1.8 -- --<1.8 -- --<1.8 -- --<1.8 -- --<1.8 -- --<1.8 -- --0.26 B -- --<1.8 -- --<1.8 -- --<1.8 -- --<1.8 -- --<0.57 -- --<1.8 -- --<1.8 -- --<1.8 -- --<1.8 -- --<1.8 -- --<1.8 -- --<1.8 -- --<1.7 -- --<3.4 -- --<1.7 -- --<1.7 -- TR0795 Page 5 of 24 December 2019 TABLE A 9-4 OFFSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location ID Field Sample ID Sample Date QA/QC Sample Delivery Group Lab Sample ID Table 3+ Lab SOP (ng/L) HFPO-DA (EPA Method 537 Mod) PFMOAA PFO2HxA PFO3OA PFO4DA PFO5DA PMPA PEPA PFESA-BP1 PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 6:2 Fluorotelomer sulfonate ADONA F-53B Major F-53B Minor NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic Acid Perfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS) Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA) Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic Acid Perfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection Agency J - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per liter QA/QC - Quality assurance/ quality control SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. Surficial Aquifer Black Creek Aquifer Black Creek Aquifer CUMBERLAND-1S CUMBERLAND-1S CUMBERLAND-1D CUMBER-1S-09162019 GW4Q19-CUMBERLAND-1S-102419 CUMBER-1D-09162019 9/16/2019 10/24/2019 9/16/2019 ------ 320-54439-1 320-55761-1 320-54439-1 320-54439-1 320-55761-3 320-54439-2 <3.7 <2 <3.8 <5 <5 UJ <5 UJ 11 8.5 <2 1.9 J <2 <2 0.81 J <2 <2 <2 UJ <2 <2 UJ 13 16 <10 <20 <20 <20 <2 <2 <2 1.8 J 2.3 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <1.9 --<1.9 <19 --<19 <19 --<19 <19 --<19 <2 --<2 <1.9 --<1.9 <1.9 --<1.9 <2 --<2 <19 --<19 <19 --<19 35 --<1.9 7 --0.52 J <1.9 --<1.9 <1.9 --<1.9 <1.9 --<1.9 <1.9 --<1.9 0.32 J --<1.9 4.4 --0.47 J <1.9 --<1.9 2.8 --0.6 B 6.4 --0.87 J <1.9 --<1.9 0.93 J --<1.9 <1.9 --<1.9 1 B --0.88 B 0.35 J --<1.9 6.5 --<1.9 <1.9 --<1.9 <1.9 --<1.9 <1.9 --<1.9 13 --<1.9 15 --0.61 J <1.9 --<1.9 <3.7 --<3.8 <1.9 --<1.9 <1.9 --<1.9 TR0795 Page 6 of 24 December 2019 TABLE A 9-4 OFFSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location ID Field Sample ID Sample Date QA/QC Sample Delivery Group Lab Sample ID Table 3+ Lab SOP (ng/L) HFPO-DA (EPA Method 537 Mod) PFMOAA PFO2HxA PFO3OA PFO4DA PFO5DA PMPA PEPA PFESA-BP1 PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 6:2 Fluorotelomer sulfonate ADONA F-53B Major F-53B Minor NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic Acid Perfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS) Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA) Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic Acid Perfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection Agency J - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per liter QA/QC - Quality assurance/ quality control SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. Black Creek Aquifer Surficial Aquifer CUMBERLAND-1D CUMBERLAND-1D GW4Q19-CUMBERLAND-1D-102419 GW4Q19-CUMBERLAND-1D-102419-D 10/24/2019 10/24/2019 --Field Duplicate 320-55761-1 320-55761-1 320-55761-1 320-55761-2 5 4.8 <5 <5 <2 <2 <2 <2 <2 <2 <2 <2 <10 <10 <20 <20 <2 <2 <2 <2 <2 <2 2.5 J 2.4 J <2 <2 <2 <2 <2 <2 <2 <2 <2 UJ <2 <2 <2 <2 <2 <2 <2 ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- TR0795 Page 7 of 24 December 2019 TABLE A 9-4 OFFSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location ID Field Sample ID Sample Date QA/QC Sample Delivery Group Lab Sample ID Table 3+ Lab SOP (ng/L) HFPO-DA (EPA Method 537 Mod) PFMOAA PFO2HxA PFO3OA PFO4DA PFO5DA PMPA PEPA PFESA-BP1 PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 6:2 Fluorotelomer sulfonate ADONA F-53B Major F-53B Minor NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic Acid Perfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS) Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA) Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic Acid Perfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection Agency J - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per liter QA/QC - Quality assurance/ quality control SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. Surficial Aquifer Black Creek Aquifer Black Creek Aquifer CUMBERLAND-2S CUMBERLAND-2S CUMBERLAND-2D Cumber-2S-09162019 GW4Q19-CUMBERLAND-2S-102319 Cumber-2D-09162019 9/16/2019 10/23/2019 9/16/2019 ------ 320-54378-1 320-55683-1 320-54378-1 320-54378-7 320-55683-1 320-54378-8 <4 UJ <86 <4 UJ 22 <210 <5 4.3 <81 <2 <2 <58 <2 <2 <79 <2 <2 38 <2 20 <570 10 <20 <47 <20 <2 <27 <2 <2 <30 <2 <2 <160 <2 <2 <58 <2 <2 <15 <2 <2 <54 <2 <2 <24 <2 <2 <28 <2 <2 <70 <2 <2 <46 <2 <2 <60 <2 <2 <41 <2 <2 --<2 <20 --<20 <20 --<470 <20 --<20 <2.1 --<2.1 <2 --<2 <2 --<2 <2.1 --<2.1 <20 --<20 <20 --<20 <2 --<2 2.9 --<2 <2 --<2 <2 --<2 <2 --<2 <2 --<2 <2 --<2 2.9 --2.7 <2 --<2 2.1 --2.9 3.8 --4.3 <2 --<2 <2 --<2 <2 --<2 <2 --<2 <2 --<2 3.9 --3.8 <2 --<2 <2 --<2 <2 --<2 5 --2.1 4.3 --4.4 <2 --<2 <4 --<4 <2 --<2 <2 --<2 TR0795 Page 8 of 24 December 2019 TABLE A 9-4 OFFSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location ID Field Sample ID Sample Date QA/QC Sample Delivery Group Lab Sample ID Table 3+ Lab SOP (ng/L) HFPO-DA (EPA Method 537 Mod) PFMOAA PFO2HxA PFO3OA PFO4DA PFO5DA PMPA PEPA PFESA-BP1 PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 6:2 Fluorotelomer sulfonate ADONA F-53B Major F-53B Minor NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic Acid Perfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS) Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA) Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic Acid Perfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection Agency J - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per liter QA/QC - Quality assurance/ quality control SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. Surficial Aquifer Surficial Aquifer CUMBERLAND-2D CUMBERLAND-3S GW4Q19-CUMBERLAND-2D-102519 Cumber-3S-09162019 10/25/2019 9/16/2019 ---- 320-55754-1 320-54378-1 320-55754-2 320-54378-5 <2 10 J <5 30 <2 63 <2 9.8 J <2 8.7 <2 7.6 <10 44 <20 <20 <2 <2 <2 4 <2 20 J <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 11 J <2 <2 <2 <2 <2 <2 --<2 --<20 --<470 --<20 --<2.1 --<2 --<2 --<2.1 --<20 --<20 --<2 --5.6 --<2 --<2 --<2 --<2 --<2 --5 --<2 --2.9 --5.3 --<2 --2.2 --<2 --<2 --<2 --6.2 --<2 --<2 --<2 --10 --16 --<2 --<4 --<2 --<2 TR0795 Page 9 of 24 December 2019 TABLE A 9-4 OFFSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location ID Field Sample ID Sample Date QA/QC Sample Delivery Group Lab Sample ID Table 3+ Lab SOP (ng/L) HFPO-DA (EPA Method 537 Mod) PFMOAA PFO2HxA PFO3OA PFO4DA PFO5DA PMPA PEPA PFESA-BP1 PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 6:2 Fluorotelomer sulfonate ADONA F-53B Major F-53B Minor NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic Acid Perfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS) Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA) Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic Acid Perfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection Agency J - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per liter QA/QC - Quality assurance/ quality control SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. Black Creek Aquifer Black Creek Aquifer CUMBERLAND-3S CUMBERLAND-3D GW4Q19-CUMBERLAND-3S-102219 Cumber-3D-09162019 10/22/2019 9/16/2019 ---- 320-55686-1 320-54378-1 320-55686-5 320-54378-6 16 B <4 UJ 13 J 17 J 40 <2 3 <2 <2 <2 <2 <2 61 12 <20 <20 <2 <2 5.1 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 2.3 <2 <2 <2 <2 <2 <2 <2 --<18 --<190 --<480 --<190 --<2.1 --<2 --<2 --<2.1 --<20 --<20 --<2 --<2 --<2 --<2 --<2 --<2 --<2 --2.2 --<2 --<2 --3.4 --<2 --<2 --<2 --<2 --<2 --2.9 --<2 --<2 --<2 --<2 --2.6 --<2 --<4 --<2 --<2 TR0795 Page 10 of 24 December 2019 TABLE A 9-4 OFFSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location ID Field Sample ID Sample Date QA/QC Sample Delivery Group Lab Sample ID Table 3+ Lab SOP (ng/L) HFPO-DA (EPA Method 537 Mod) PFMOAA PFO2HxA PFO3OA PFO4DA PFO5DA PMPA PEPA PFESA-BP1 PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 6:2 Fluorotelomer sulfonate ADONA F-53B Major F-53B Minor NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic Acid Perfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS) Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA) Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic Acid Perfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection Agency J - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per liter QA/QC - Quality assurance/ quality control SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. Surficial Aquifer Surficial Aquifer CUMBERLAND-3D CUMBERLAND-4S GW4Q19-CUMBERLAND-3D-102319 Cumber-4S-09162019 10/23/2019 9/16/2019 ---- 320-55683-1 320-54378-1 320-55683-5 320-54378-2 <86 110 J <210 39 <81 110 <58 18 <79 5.1 <34 <2 <570 140 <47 42 <27 <2 <30 4.8 <160 74 J <58 <2 <15 <2 <54 2.1 <24 <2 <28 <2 <70 18 J <46 <2 <60 <2 <41 <2 --<2 --<20 --<20 --<20 --<2.1 --<2 --<2 --<2.1 --<20 --<20 --<2 --8.6 --<2 --<2 --<2 --<2 --<2 --2.9 --<2 UJ --<2 --3.1 --<2 --<2 --<2 UJ --<2 --<2 --5.2 --<2 --<2 --<2 --6 --5.9 --<2 --<4 --<2 --<2 TR0795 Page 11 of 24 December 2019 TABLE A 9-4 OFFSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location ID Field Sample ID Sample Date QA/QC Sample Delivery Group Lab Sample ID Table 3+ Lab SOP (ng/L) HFPO-DA (EPA Method 537 Mod) PFMOAA PFO2HxA PFO3OA PFO4DA PFO5DA PMPA PEPA PFESA-BP1 PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 6:2 Fluorotelomer sulfonate ADONA F-53B Major F-53B Minor NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic Acid Perfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS) Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA) Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic Acid Perfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection Agency J - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per liter QA/QC - Quality assurance/ quality control SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. Black Creek Aquifer Black Creek Aquifer CUMBERLAND-4S CUMBERLAND-4D GW4Q19-CUMBERLAND-4S-102519 Cumber-4D-09162019 10/25/2019 9/16/2019 ---- 320-55761-1 320-54378-1 320-55761-5 320-54378-1 76 <4 UJ 15 J <5 78 J <2 14 <2 7.3 <2 <2 <2 120 J 12 31 <20 <2 <2 5.6 <2 30 J 2.7 J <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 7.6 J <2 <2 <2 <2 <2 <2 <2 --<2 --<20 --<20 --29 J --<2.1 --<2 --<2 --<2.1 --<20 --<20 --<2 --<2 --<2 --<2 --<2 --<2 --<2 --2.5 --<2 --<2 --3.4 --<2 --<2 --<2 --<2 --<2 --3.4 --<2 --<2 --<2 --<2 --2.7 --<2 --<4 --<2 --<2 TR0795 Page 12 of 24 December 2019 TABLE A 9-4 OFFSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location ID Field Sample ID Sample Date QA/QC Sample Delivery Group Lab Sample ID Table 3+ Lab SOP (ng/L) HFPO-DA (EPA Method 537 Mod) PFMOAA PFO2HxA PFO3OA PFO4DA PFO5DA PMPA PEPA PFESA-BP1 PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 6:2 Fluorotelomer sulfonate ADONA F-53B Major F-53B Minor NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic Acid Perfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS) Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA) Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic Acid Perfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection Agency J - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per liter QA/QC - Quality assurance/ quality control SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. Surficial Aquifer Surficial Aquifer CUMBERLAND-4D CUMBERLAND-5S GW4Q19-CUMBERLAND-4D-102419 Cumber-5S-09162019 10/24/2019 9/16/2019 ---- 320-55761-1 320-54378-1 320-55761-4 320-54378-4 <2 <4 UJ <5 22 <2 <2 <2 <2 <2 <2 <2 <2 <10 14 <20 <20 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 --<2 --<20 --<480 --<20 --<2.1 --<2 --<2 --<2.1 --<20 --<20 --<2 --<2 --<2 --<2 --<2 --<2 --<2 --<2 --<2 --<2 --<2 --<2 --<2 --<2 --<2 --<2 --<2 --<2 --<2 --<2 --<2 --<2 --<2 --<4 --<2 --<2 TR0795 Page 13 of 24 December 2019 TABLE A 9-4 OFFSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location ID Field Sample ID Sample Date QA/QC Sample Delivery Group Lab Sample ID Table 3+ Lab SOP (ng/L) HFPO-DA (EPA Method 537 Mod) PFMOAA PFO2HxA PFO3OA PFO4DA PFO5DA PMPA PEPA PFESA-BP1 PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 6:2 Fluorotelomer sulfonate ADONA F-53B Major F-53B Minor NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic Acid Perfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS) Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA) Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic Acid Perfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection Agency J - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per liter QA/QC - Quality assurance/ quality control SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. Surficial Aquifer Black Creek Aquifer Surficial Aquifer CUMBERLAND-5S CUMBERLAND-5D ROBESON-1S GW4Q19-CUMBERLAND-5S-102319 Cumber-5D-09162019 ROBESON-1S-091219 10/23/2019 9/16/2019 9/12/2019 ------ 320-55683-1 320-54378-1 280-128413-1 320-55683-7 320-54378-3 280-128413-1 <86 <4 UJ <4 UJ <210 <5 6.3 <81 <2 6.2 <58 <2 <2 <79 <2 <2 50 <2 <2 UJ <570 <10 34 <47 <20 <20 <27 <2 <2 <30 <2 7.1 <160 <2 <2 <58 <2 <2 <15 <2 <2 <54 <2 <2 <24 <2 <2 <28 <2 <2 <70 <2 <2 <46 <2 <2 <60 <2 <2 <41 <2 <2 --<2 <2 --<20 <20 --<20 <20 --<20 <20 --<2.1 <2.1 --<2 <2 --<2 <2 --<2.1 <2.1 --<20 <20 --<20 <20 --<2 <2 --<2 <2 --<2 <2 --<2 <2 --<2 <2 --<2 <2 --<2 <2 --<2 <2 --<2 <2 --<2 <2 --<2 <2 --<2 <2 --<2 <2 --<2 <2 --<2 <2 --<2 <2 --<2 <2 --<2 <2 --<2 <2 --<2 <2 --<2 <2 --<2 3.5 --<2 <2 --<4 <4 --<2 UJ <2 --<2 <2 TR0795 Page 14 of 24 December 2019 TABLE A 9-4 OFFSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location ID Field Sample ID Sample Date QA/QC Sample Delivery Group Lab Sample ID Table 3+ Lab SOP (ng/L) HFPO-DA (EPA Method 537 Mod) PFMOAA PFO2HxA PFO3OA PFO4DA PFO5DA PMPA PEPA PFESA-BP1 PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 6:2 Fluorotelomer sulfonate ADONA F-53B Major F-53B Minor NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic Acid Perfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS) Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA) Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic Acid Perfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection Agency J - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per liter QA/QC - Quality assurance/ quality control SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. Surficial Aquifer Black Creek Aquifer Black Creek Aquifer ROBESON-1S ROBESON-1D ROBESON-1D GW4Q19-ROBESON-1S-103119 ROBESON-1D-091219 GW4Q19-ROBESON-1D-103119 10/31/2019 9/12/2019 10/31/2019 ------ 320-55909-1 280-128413-1 320-55909-1 320-55909-4 280-128413-2 320-55909-3 <2 6 J 3.6 B 7.4 <5 <5 4.9 2.8 <2 <2 <2 <2 <2 <2 <2 <2 <2 UJ <2 18 35 11 <20 <20 <20 <2 <2 <2 8.7 3 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 --<2 -- --<20 -- --<20 -- --<20 -- --<2.1 -- --<2 -- --<2 -- --<2.1 -- --<20 -- --<20 -- --<2 -- --<2 -- --<2 -- --<2 -- --<2 -- --<2 -- --<2 -- --<2 -- --<2 -- --<2 -- --2.3 -- --<2 -- --<2 -- --<2 -- --<2 -- --<2 -- --2 -- --<2 -- --<2 -- --<2 -- --<2 -- --<2 -- --<2 -- --<4 -- --<2 -- --<2 -- TR0795 Page 15 of 24 December 2019 TABLE A 9-4 OFFSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location ID Field Sample ID Sample Date QA/QC Sample Delivery Group Lab Sample ID Table 3+ Lab SOP (ng/L) HFPO-DA (EPA Method 537 Mod) PFMOAA PFO2HxA PFO3OA PFO4DA PFO5DA PMPA PEPA PFESA-BP1 PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 6:2 Fluorotelomer sulfonate ADONA F-53B Major F-53B Minor NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic Acid Perfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS) Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA) Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic Acid Perfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection Agency J - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per liter QA/QC - Quality assurance/ quality control SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. ------ EB EB EB EquipBlank1-20190912 GW4Q19-EQBLK-01-102319 GW4Q19-EQBLK-02-102319 9/12/2019 10/23/2019 10/23/2019 Equipment Blank Equipment Blank Equipment Blank 200-50537-2 320-55683-1 320-55683-1 200-50537-3 320-55683-9 320-55683-4 <4 <86 <86 <5 <210 <210 <2 <81 <81 <2 <58 <58 <2 <79 <79 <2 <34 <34 <10 <570 <570 <20 <47 <47 <2 <27 <27 <2 <30 <30 <2 <160 <160 <2 <58 <58 <2 <15 <15 <2 <54 <54 <2 <24 <24 <2 <28 <28 <2 <70 <70 <2 <46 <46 <2 <60 <60 <2 <41 <41 <2 ---- <20 ---- <20 ---- <20 ---- <2.1 ---- <2 ---- <2 ---- <2.1 ---- <20 ---- <20 ---- <2 ---- <2 ---- <2 ---- <2 ---- <2 ---- <2 ---- <2 ---- <2 ---- <2 ---- <2 ---- <2 ---- <2 ---- <2 ---- <2 ---- <2 ---- <2 ---- <2 ---- <2 ---- <2 ---- <2 ---- <2 ---- <2 ---- <2 ---- <4 ---- <2 ---- <2 ---- TR0795 Page 16 of 24 December 2019 TABLE A 9-4 OFFSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location ID Field Sample ID Sample Date QA/QC Sample Delivery Group Lab Sample ID Table 3+ Lab SOP (ng/L) HFPO-DA (EPA Method 537 Mod) PFMOAA PFO2HxA PFO3OA PFO4DA PFO5DA PMPA PEPA PFESA-BP1 PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 6:2 Fluorotelomer sulfonate ADONA F-53B Major F-53B Minor NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic Acid Perfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS) Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA) Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic Acid Perfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection Agency J - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per liter QA/QC - Quality assurance/ quality control SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. ------ EB EB EB GW4Q19-EQBLK-02-102419 GW4Q19-EBLK-01-102519 GW4Q19-EQBLK-01-102519 10/24/2019 10/25/2019 10/25/2019 Equipment Blank Equipment Blank Equipment Blank 320-55761-1 320-55754-1 320-55754-1 320-55761-6 320-55754-5 320-55754-3 <2 <2 2.9 <5 <5 <5 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <10 <10 <10 <20 <20 <20 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ TR0795 Page 17 of 24 December 2019 TABLE A 9-4 OFFSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location ID Field Sample ID Sample Date QA/QC Sample Delivery Group Lab Sample ID Table 3+ Lab SOP (ng/L) HFPO-DA (EPA Method 537 Mod) PFMOAA PFO2HxA PFO3OA PFO4DA PFO5DA PMPA PEPA PFESA-BP1 PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 6:2 Fluorotelomer sulfonate ADONA F-53B Major F-53B Minor NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic Acid Perfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS) Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA) Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic Acid Perfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection Agency J - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per liter QA/QC - Quality assurance/ quality control SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. ------ EB EB EB GW4Q19-EQBLK-02-102519 GW4Q19-EQBLK-01-102919 GW4Q19-EQBLK-02-102919 10/25/2019 10/29/2019 10/29/2019 Equipment Blank Equipment Blank Equipment Blank 320-55754-1 320-55854-1 320-55854-1 320-55754-4 320-55854-7 320-55854-8 7.9 <2 <2 6.1 <5 <5 2.5 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <10 <10 <10 <20 <20 <20 <2 <2 <2 <2 <2 <2 8.1 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 3.6 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ TR0795 Page 18 of 24 December 2019 TABLE A 9-4 OFFSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location ID Field Sample ID Sample Date QA/QC Sample Delivery Group Lab Sample ID Table 3+ Lab SOP (ng/L) HFPO-DA (EPA Method 537 Mod) PFMOAA PFO2HxA PFO3OA PFO4DA PFO5DA PMPA PEPA PFESA-BP1 PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 6:2 Fluorotelomer sulfonate ADONA F-53B Major F-53B Minor NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic Acid Perfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS) Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA) Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic Acid Perfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection Agency J - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per liter QA/QC - Quality assurance/ quality control SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. ------ EB EB EB GW4Q19-EQBLK-01-103119 GW4Q19-EQBLK-02-103119 GW4Q19-EQBLK-01-110719 10/31/2019 10/31/2019 11/7/2019 Equipment Blank Equipment Blank Equipment Blank 320-55909-1 320-55909-1 320-56173-1 320-55909-5 320-55909-6 320-56173-1 2.4 <2 <2 <5 <5 <5 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <10 <10 <10 <20 <20 <20 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ TR0795 Page 19 of 24 December 2019 TABLE A 9-4 OFFSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location ID Field Sample ID Sample Date QA/QC Sample Delivery Group Lab Sample ID Table 3+ Lab SOP (ng/L) HFPO-DA (EPA Method 537 Mod) PFMOAA PFO2HxA PFO3OA PFO4DA PFO5DA PMPA PEPA PFESA-BP1 PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 6:2 Fluorotelomer sulfonate ADONA F-53B Major F-53B Minor NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic Acid Perfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS) Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA) Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic Acid Perfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection Agency J - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per liter QA/QC - Quality assurance/ quality control SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. ------ EQBLK EQBLK EQBLK BLADEN EQBLK-1 BLADEN EQBLK-2 GW4Q19-EQBLK-01-102219 8/28/2019 8/28/2019 10/22/2019 Equipment Blank Equipment Blank Equipment Blank 280-127778-1 280-127778-1 320-55686-1 280-127778-8 280-127778-9 320-55686-8 <3.8 <3.8 <2 <2.1 <2.1 <5 <0.8 <0.8 <2 <0.6 <0.6 <2 <0.8 <0.8 <2 <0.3 <0.3 <2 <5.7 <5.7 <10 <0.5 <0.5 <20 <0.3 <0.3 <2 <0.3 <0.3 <2 <1.6 <1.6 <2 <0.6 <0.6 <2 <0.2 <0.2 <2 <0.5 <0.5 <2 <0.2 <0.2 <2 <0.3 <0.3 <2 <0.7 <0.7 <2 <0.5 <0.5 <2 <0.6 <0.6 <2 <0.4 <0.4 <2 <1.9 <1.9 -- <19 <19 -- <19 <19 -- <19 <19 -- <2 <2 -- <1.9 <1.9 -- <1.9 <1.9 -- <2 <2 -- <19 <19 -- <19 <19 -- <1.9 <1.9 -- <1.9 <1.9 -- <1.9 <1.9 -- <1.9 <1.9 -- <1.9 <1.9 -- <1.9 <1.9 -- <1.9 <1.9 -- <1.9 <1.9 -- <1.9 <1.9 -- 0.34 J 0.26 J -- <1.9 <1.9 -- <1.9 <1.9 -- <1.9 <1.9 -- <1.9 <1.9 -- <1.9 <1.9 -- <1.9 <1.9 -- <1.9 <1.9 -- 0.3 J <1.9 -- <1.9 <1.9 -- <1.9 <1.9 -- <1.9 <1.9 -- <1.9 <1.9 -- <1.9 <1.9 -- <3.8 <3.8 -- <1.9 <1.9 -- <1.9 <1.9 -- TR0795 Page 20 of 24 December 2019 TABLE A 9-4 OFFSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location ID Field Sample ID Sample Date QA/QC Sample Delivery Group Lab Sample ID Table 3+ Lab SOP (ng/L) HFPO-DA (EPA Method 537 Mod) PFMOAA PFO2HxA PFO3OA PFO4DA PFO5DA PMPA PEPA PFESA-BP1 PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 6:2 Fluorotelomer sulfonate ADONA F-53B Major F-53B Minor NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic Acid Perfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS) Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA) Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic Acid Perfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection Agency J - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per liter QA/QC - Quality assurance/ quality control SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. ------ EQBLK EQBLK EQBLK GW4Q19-EQBLK-02-102219 GW4Q19-EQBLK-01-102819 GW4Q19-EQBLK-02-102819 10/22/2019 10/28/2019 10/28/2019 Equipment Blank Equipment Blank Equipment Blank 320-55686-1 320-55757-1 320-55757-1 320-55686-7 320-55757-1 320-55757-2 3.6 2.1 3.7 <5 <5 <5 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <10 <10 <10 <20 <20 <20 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ TR0795 Page 21 of 24 December 2019 TABLE A 9-4 OFFSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location ID Field Sample ID Sample Date QA/QC Sample Delivery Group Lab Sample ID Table 3+ Lab SOP (ng/L) HFPO-DA (EPA Method 537 Mod) PFMOAA PFO2HxA PFO3OA PFO4DA PFO5DA PMPA PEPA PFESA-BP1 PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 6:2 Fluorotelomer sulfonate ADONA F-53B Major F-53B Minor NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic Acid Perfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS) Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA) Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic Acid Perfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection Agency J - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per liter QA/QC - Quality assurance/ quality control SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. ------ FBLK FBLK FBLK FIELDBLK-20190913 GW4Q19-FBLK-01-102219 GW4Q19-FBLK-01-102319 9/13/2019 10/22/2019 10/23/2019 Field Blank Field Blank Field Blank 200-50567-2 320-55686-1 320-55683-1 200-50567-3 320-55686-9 320-55683-10 9.2 25 <86 <5 <5 <210 <2 <2 <81 <2 <2 <58 <2 <2 <79 <2 <2 <34 <10 <10 <570 <20 <20 <47 <2 <2 <27 <2 <2 <30 <2 <2 <160 <2 <2 <58 <2 <2 <15 <2 <2 <54 <2 <2 <24 <2 <2 <28 <2 <2 <70 <2 <2 <46 <2 <2 <60 <2 <2 <41 <2 ---- <20 ---- <20 ---- <20 ---- <2.1 ---- <2 ---- <2 ---- <2.1 ---- <20 ---- <20 ---- <2 ---- <2 ---- <2 ---- <2 ---- <2 ---- <2 ---- <2 ---- <2 ---- <2 ---- <2 ---- <2 ---- <2 ---- <2 ---- <2 ---- <2 ---- <2 ---- <2 ---- <2 ---- <2 ---- <2 ---- <2 ---- <2 ---- <2 ---- <4 ---- <2 ---- <2 ---- TR0795 Page 22 of 24 December 2019 TABLE A 9-4 OFFSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location ID Field Sample ID Sample Date QA/QC Sample Delivery Group Lab Sample ID Table 3+ Lab SOP (ng/L) HFPO-DA (EPA Method 537 Mod) PFMOAA PFO2HxA PFO3OA PFO4DA PFO5DA PMPA PEPA PFESA-BP1 PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 6:2 Fluorotelomer sulfonate ADONA F-53B Major F-53B Minor NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic Acid Perfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS) Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA) Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic Acid Perfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection Agency J - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per liter QA/QC - Quality assurance/ quality control SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. ------ FBLK FBLK FBLK GW4Q19-FBLK-01-102419 GW4Q19-FBLK-01-102819 GW4Q19-FBLK-01-102919 10/24/2019 10/28/2019 10/29/2019 Field Blank Field Blank Field Blank 320-55761-1 320-55757-1 320-55854-1 320-55761-7 320-55757-5 320-55854-6 <2 <2 <2 <5 <5 <5 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 UJ <10 <10 <10 <20 <20 <20 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ TR0795 Page 23 of 24 December 2019 TABLE A 9-4 OFFSITE GROUNDWATER ANALYTICAL RESULTS Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Aquifer Location ID Field Sample ID Sample Date QA/QC Sample Delivery Group Lab Sample ID Table 3+ Lab SOP (ng/L) HFPO-DA (EPA Method 537 Mod) PFMOAA PFO2HxA PFO3OA PFO4DA PFO5DA PMPA PEPA PFESA-BP1 PFESA-BP2 Byproduct 4 Byproduct 5 Byproduct 6 NVHOS EVE Acid Hydro-EVE Acid R-EVE PES PFECA B PFECA-G Other PFAS (ng/L) 10:2 Fluorotelomer sulfonate 1H,1H,2H,2H-perfluorodecanesulfonate (8:2 FTS) 1H,1H,2H,2H-perfluorohexanesulfonate (4:2 FTS) 6:2 Fluorotelomer sulfonate ADONA F-53B Major F-53B Minor NaDONA N-ethyl perfluorooctane sulfonamidoacetic acid N-methyl perfluorooctane sulfonamidoacetic acid Perfluorobutane Sulfonic Acid Perfluorobutanoic Acid Perfluorodecane Sulfonic Acid Perfluorodecanoic Acid Perfluorododecane sulfonic acid (PFDoS) Perfluorododecanoic Acid Perfluoroheptane sulfonic acid (PFHpS) Perfluoroheptanoic Acid Perfluorohexadecanoic acid (PFHxDA) Perfluorohexane Sulfonic Acid Perfluorohexanoic Acid Perfluorononanesulfonic acid Perfluorononanoic Acid Perfluorooctadecanoic acid Perfluorooctane Sulfonamide Perfluoropentane sulfonic acid (PFPeS) Perfluoropentanoic Acid Perfluorotetradecanoic Acid Perfluorotridecanoic Acid Perfluoroundecanoic Acid PFOA PFOS 2-(N-ethyl perfluoro-1-octanesulfonamido)-ethanol 2-(N-methyl perfluoro-1-octanesulfonamido)-ethanol N-ethylperfluoro-1-octanesulfonamide N-methyl perfluoro-1-octanesulfonamide Notes: Bold - Analyte detected above associated reporting limit B - analyte detected in an associated blank EPA - Environmental Protection Agency J - Analyte detected. Reported value may not be accurate or precise ng/L - nanograms per liter QA/QC - Quality assurance/ quality control SOP - standard operating procedure UJ – Analyte not detected. Reporting limit may not be accurate or precise. < - Analyte not detected above associated reporting limit. ---- FBLK FBLK GW4Q19-FBLK-01-103119 GW4Q19-FBLK-01-110719 10/31/2019 11/7/2019 Field Blank Field Blank 320-55909-1 320-56173-1 320-55909-7 320-56173-2 <2 <2 <5 <5 <2 <2 <2 <2 <2 <2 <2 <2 <10 <10 <20 <20 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- TR0795 Page 24 of 24 December 2019 TABLE A 9-5 SELECT MONITORING WELL LOCATIONS SHOWING PROPSOED PFAS SIGNATURES Chemours Fayetteville Works, North Carolina Geosyntec Consultants of NC P.C. Proposed PFAS Signature Area Aquifer Location ID HFPO-DAPFMOAAPFO2HxAPFO3OAPFO4DAPFO5DAPMPAPEPAPFESA-BP1PFESA-BP2Byproduct 4Byproduct 5Byproduct 6NVHOSEVE AcidHydro-EVE AcidR-EVETotal Table 3+ (ng/L) Aerial - Predominant PMPA Offsite Black Creek Aquifer BLADEN-2D 10% 0% 6% 1% 0% 0% 69% 11% 0% 4% 0% 0% 0% 0% 0% 0% 0%110 Aerial - Predominant PMPA Offsite Surficial Aquifer BLADEN-2S 4% 9% 15% 1% 1% 0% 53% 5% 0% 11% 0% 0% 0% 1% 0% 0% 0%130 Aerial - Predominant PMPA Onsite Black Creek Aquifer PW-12 0% 0% 0% 0% 0% 0% 100% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0%15 Aerial - Mixture of PFAS Offsite Black Creek Aquifer BLADEN-1D 24% 4% 11% 1% 0% 0% 43% 14% 0% 0% 2% 0% 0% 0% 0% 0% 1%760 Aerial - Mixture of PFAS Offsite Surficial Aquifer BLADEN-3S 10% 13% 27% 3% 3% 1% 33% 5% 0% 3% 2% 0% 0% 0% 0% 0% 0%120 Aerial - Mixture of PFAS Offsite Surficial Aquifer CUMBERLAND-3S 5% 14% 30% 5% 4% 4% 21% 0% 0% 2% 10% 0% 0% 0% 0% 0% 5%210 Aerial - Mixture of PFAS Offsite Surficial Aquifer CUMBERLAND-4S 20% 7% 20% 3% 1% 0% 25% 7% 0% 1% 13% 0% 0% 0% 0% 0% 3%560 Aerial - Mixture of PFAS Onsite Perched Zone FTA-02 24% 12% 10% 2% 2% 3% 7% 3% 1% 4% 2% 1% 0% 0% 27% 1% 1%90,000 Aerial - Mixture of PFAS Onsite Surficial Aquifer MW-18D 53% 4% 7% 0% 0% 0% 28% 7% 0% 0% 0% 0% 0% 0% 0% 0% 0%1,500 Aerial - Mixture of PFAS Onsite Perched Zone NAF-04 6% 6% 10% 3% 1% 1% 2% 1% 25% 3% 2% 28% 0% 1% 8% 4% 1%4,300,000 Aerial - Mixture of PFAS Onsite Perched Zone NAF-12 2% 4% 7% 3% 2% 1% 6% 1% 12% 4% 4% 20% 0% 10% 13% 7% 2%5,400,000 Aerial - Mixture of PFAS Onsite Surficial Aquifer PW-03 20% 1% 5% 1% 0% 0% 33% 19% 0% 0% 3% 12% 0% 2% 0% 1% 3%400,000 Combined Process Water - Predominant PFMOAA Onsite Black Creek Aquifer LTW-05 7% 65% 18% 6% 1% 0% 0% 0% 0% 0% 0% 1% 0% 1% 0% 0% 1%370,000 Combined Process Water - Predominant PFMOAA Onsite Surficial Aquifer MW-14D 4% 71% 14% 3% 1% 0% 3% 1% 0% 0% 0% 1% 0% 1% 0% 0% 0%250,000 Combined Process Water - Predominant PFMOAA Onsite Perched Zone MW-24 2% 77% 14% 3% 1% 0% 1% 0% 0% 0% 0% 1% 0% 1% 0% 0% 0%940,000 Combined Process Water - Predominant PFMOAA Onsite Perched Zone MW-27 3% 68% 18% 5% 1% 0% 2% 1% 0% 0% 0% 0% 0% 1% 0% 0% 0%350,000 Combined Process Water - Predominant PFMOAA Onsite Perched Zone NAF-02 3% 62% 17% 5% 2% 1% 2% 1% 0% 0% 0% 5% 0% 1% 0% 0% 0%4,700,000 Combined Process Water - Predominant PFMOAA Onsite Surficial Aquifer PIW-9S 3% 69% 16% 4% 1% 0% 3% 1% 0% 0% 0% 0% 0% 1% 0% 0% 0%220,000 Combined Process Water - Predominant PFMOAA Onsite Black Creek Aquifer PW-15R 2% 67% 13% 3% 0% 0% 7% 2% 1% 0% 0% 4% 0% 1% 0% 0% 0%490,000 Combined Process Water - Predominant PFMOAA Onsite Surficial Aquifer SMW-08B 2% 74% 13% 3% 1% 0% 2% 1% 0% 0% 0% 1% 0% 1% 0% 0% 0%350,000 Combined Process Water - Mixture of PFAS Onsite Surficial Aquifer MW-15DRR 4% 38% 8% 1% 0% 0% 4% 1% 11% 1% 1% 26% 0% 0% 1% 0% 0%81,000 Combined Process Water - Mixture of PFAS Onsite Black Creek Aquifer PIW-10DR 17% 40% 17% 5% 1% 0% 8% 3% 0% 0% 1% 6% 0% 0% 0% 1% 1%110,000 Combined Process Water - Mixture of PFAS Onsite Perched Zone PZ-11 19% 27% 18% 3% 2% 3% 13% 4% 2% 1% 1% 5% 0% 1% 0% 0% 0%26,000 Notes: ng/L - nanograms per liter Table 3+ compounds reported as percentage of Total Table 3+ concentrations. PES, PFECA B, and PFECA-G had no detections and are therefore omitted from this table. TR0795 Page 1 of 1 October 2019 TABLE A 10-1COMPARISON OF PROPOSED PFAS SIGNATURES TO SELECTED LOCATIONS Chemours Fayetteville Works, North CarolinaGeosyntec Consultants of NC P.C.Location ID Sample DateProposed PFAS SignatureHFPO-DAPFMOAAPFO2HxAPFO3OAPFO4DAPFO5DAPMPAPEPAPFESA-BP1PFESA-BP2Byproduct 4Byproduct 5Byproduct 6NVHOSEVE AcidHydro-EVE AcidR-EVETotal Table 3+(ng/L)OLDOF-12/1/2019Combined Process Water - Predominant PFMOAA4%72%13%4%1%1%4%1%0%0%0%1%0%1%0%0%0%130,000OLDOF-22/1/2019Combined Process Water - Predominant PFMOAA4%66%13%4%1%1%4%1%0%0%0%1%0%1%0%0%0%140,000OLDOF-2L2/2/2019Combined Process Water - Predominant PFMOAA4%69%14%4%1%1%4%1%0%0%0%1%0%1%0%0%0%150,000OLDOF-32/2/2019Combined Process Water - Predominant PFMOAA4%68%14%3%1%0%4%1%0%0%0%1%0%1%0%0%0%160,000OLDOF-42/2/2019Combined Process Water - Predominant PFMOAA3%70%13%4%1%1%4%1%0%0%0%1%0%1%0%0%0%200,000OLDOF-52/2/2019Combined Process Water - Predominant PFMOAA3%69%13%4%2%1%3%1%1%0%0%1%0%1%0%0%0%290,000OLDOF-5K2/2/2019Combined Process Water - Predominant PFMOAA16%41%14%3%3%1%12%4%0%1%1%0%0%1%0%1%1%39,000OLDOF-2J*2/2/2019Aerial - Mixture of PFAS14%6%15%3%0%0%43%15%0%1%2%0%0%0%0%0%1%8,700SEEP-C-12/5/2019Combined Process Water - Predominant PFMOAA8%58%19%6%1%0%5%2%0%0%0%1%0%1%0%1%1%340,000SEEP-C-1-E22/5/2019Combined Process Water - Predominant PFMOAA7%63%15%4%1%0%5%2%0%0%0%1%0%1%0%0%0%260,000SEEP-D-15/30/2019Combined Process Water - Predominant PFMOAA11%54%17%5%1%0%5%2%0%0%1%2%0%0%0%1%1%170,000SEEP-A-12/7/2019Combined Process Water - Mixture of PFAS4%37%18%6%4%2%11%4%2%1%1%10%0%0%0%1%1%230,000SEEP-A-102/7/2019Combined Process Water - Mixture of PFAS12%16%12%5%4%5%10%4%9%1%1%13%0%1%5%2%1%530,000SEEP-A-112/7/2019Combined Process Water - Mixture of PFAS10%17%12%5%4%4%9%4%10%1%1%14%0%1%4%2%1%540,000SEEP-A-122/7/2019Combined Process Water - Mixture of PFAS17%13%25%4%4%3%18%7%0%1%2%0%0%0%0%0%1%120,000SEEP-A-22/7/2019Combined Process Water - Mixture of PFAS11%34%17%6%3%2%10%4%2%1%1%10%0%0%0%1%1%240,000SEEP-A-32/7/2019Combined Process Water - Mixture of PFAS6%36%17%6%4%3%10%4%2%1%1%10%0%0%0%1%1%220,000SEEP-A-42/7/2019Combined Process Water - Mixture of PFAS11%31%18%5%3%3%18%8%0%1%1%4%0%0%0%1%0%160,000SEEP-A-52/7/2019Combined Process Water - Mixture of PFAS10%17%16%5%4%3%23%11%1%1%1%6%0%0%0%1%1%180,000SEEP-A-62/7/2019Combined Process Water - Mixture of PFAS13%12%14%4%4%3%27%13%1%1%1%5%0%0%0%1%1%140,000SEEP-A-72/7/2019Combined Process Water - Mixture of PFAS13%20%16%5%4%3%21%10%1%1%1%6%0%0%0%1%1%220,000SEEP-A-82/7/2019Combined Process Water - Mixture of PFAS9%12%14%5%5%4%27%14%1%1%1%4%0%0%0%1%1%140,000SEEP-A-92/7/2019Combined Process Water - Mixture of PFAS11%15%12%5%4%3%10%4%8%1%2%16%0%1%4%2%1%510,000SEEP-B-12/5/2019Combined Process Water - Mixture of PFAS7%42%12%3%1%0%12%5%1%0%1%11%0%1%2%1%1%350,000SEEP-B-22/5/2019Aerial - Mixture of PFAS12%3%5%1%1%0%20%10%5%1%4%25%0%2%8%2%3%310,000SEEP-B-32/6/2019Aerial - Mixture of PFAS11%1%4%1%1%0%19%10%6%1%4%26%0%2%9%2%3%380,000SEEP-B-3-A12/6/2019Aerial - Mixture of PFAS13%1%4%1%1%0%17%9%7%1%3%26%0%2%10%2%3%460,000SEEP-B-3-E42/6/2019Aerial - Mixture of PFAS22%4%13%2%3%1%36%14%0%1%2%0%0%0%0%0%1%45,000SEEP-B-42/6/2019Aerial - Mixture of PFAS12%1%3%1%1%0%17%9%8%1%4%26%0%2%11%2%3%670,000SEEP-B-4-A32/6/2019Aerial - Mixture of PFAS7%1%4%1%1%1%17%8%9%1%4%22%0%1%15%2%4%430,000GBC-15/29/2019Aerial - Mixture of PFAS19%0%16%3%0%0%50%12%0%1%0%0%0%0%0%0%0%2,600GBC-25/29/2019Aerial - Mixture of PFAS25%0%14%3%0%0%46%11%0%1%0%0%0%0%0%0%0%2,600GBC-35/29/2019Aerial - Mixture of PFAS23%0%15%2%0%0%47%10%0%1%0%0%0%0%0%0%0%3,000GBC-55/29/2019Aerial - Mixture of PFAS28%5%17%3%0%0%35%11%0%1%0%0%0%0%0%0%0%4,600GBC-65/29/2019Aerial - Mixture of PFAS29%0%17%3%0%0%39%11%0%1%0%0%0%0%0%0%0%4,900GBC-75/29/2019Aerial - Mixture of PFAS29%0%19%3%0%1%38%10%0%1%0%0%0%0%0%0%0%4,200WC-15/30/2019Combined Process Water - Mixture of PFAS17%29%15%3%0%1%25%5%0%0%0%5%0%0%0%0%0%4,800CFR-MILE-766/7/2019Aerial - Mixture of PFAS10%0%6%0%0%0%25%0%0%0%11%32%0%10%0%0%6%72CFR-BLADEN5/22/2019Combined Process Water - Mixture of PFAS10%45%14%3%1%0%11%0%0%0%3%11%0%2%0%0%1%290CFR-KINGS5/23/2019Combined Process Water - Mixture of PFAS12%6%21%5%2%0%21%0%0%0%14%5%0%4%0%0%7%140Notes:ng/L - nanograms per literTable 3+ compounds reported as percentage of Total Table 3+ concentrations. PES, PFECA B, and PFECA-G had no detections and are therefore omitted from this table.* - Sample was collected from seep water, not Old Outfall water.TR0795Page 1 of 1October 2019 TR0795 FIGURES ") ") ") Willis Creek Old Outfall 002Cape Fear RiverOutfall 002 W.O. Huske Dam Site River Water Intake NC Highway 87Seep A Seep B Seep C Seep D GBCTributary1GeorgiaBranchCreek Site Location Map Figure A2-1Raleigh 2,000 0 2,0001,000 Feet ³Path: P:\PRJ\Projects\TR0795\Database and GIS\GIS\Onsite and Offsite Assessment Report\TR0795_SiteLocation.mxd; 10/31/2019October 2019 Legend ")Site Features Site Boundary Nearby Tributary Observed Seep (Natural Drainage) Site Drainage Network Notes:1. The outline of the Cape Fear River shown on this figure is approximate (River outline based on compilation of open data sources fromArcGIS online service and North Carolina Department of Environmental Quality Online GIS - Major Hydro shapefile).2. Basemap sources: Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GISUser Community Chemours Fayetteville Works, North Carolina Areas at Site Chemours Monomers IXM Former DuPont PMDF Area Wastewater Treatment Plant Kuraray SentryGlas®Leased Area Kuraray Trosifol®Leased Area DuPont Polyvinyl FluorideLeased Area Chemours PolymerProcessing Aid Area Power - Filtered andDemineralized WaterProduction Kuraray Laboratory Regional Topographic Map Chemours Fayetteville Works, North Carolina Figure A2-2Raleigh 2 0 21 Miles ³Path: P:\PRJ\Projects\TR0795\Database and GIS\GIS\Onsite and Offsite Assessment Report\TR0795_TopographicMap_6mile.mxd Last Revised: 10/30/2019 Author: TIpOctober 2019 Projection: NAD 1983 StatePlane North Carolina FIPS 3200 Feet; Units in Foot US Notes:1. For topographic map symbols, please refer to this document: https://pubs.usgs.gov/gip/TopographicMapSymbols/topomapsymbols.pdf 2. Basemap source: © 2013 National Geographic Society, i-cubed Legend Site Boundary ") Old Outfall 002 Site Drainage Network To Outfall 002 W.O. Huske Dam Willis Creek Georgia Branch Creek Outfall 002Ca p e F e a r R i v e r Site Topographic Map Chemours Fayetteville Works, North Carolina Figure A2-3Raleigh 2,000 0 2,0001,000 Feet Path: P:\PRJ\Projects\TR0795\Database and GIS\GIS\Onsite and Offsite Assessment Report\TR0795_SiteTopgraphicMap.mxd; SSomnarain; 10/30/2019October 2019 Notes:Basemap sources: Esri, Garmin, USGS, NPS (World Terrain Reference); Esri, USGS, NGA, NASA, CGIAR, N Robinson, NCEAS, NLS, OS, NMA, Geodatastyrelsen, Rijkswaterstaat, GSA, Geoland, FEMA, Intermap and the GIS user community (World Hillshade) Legend ")Site Features Site Boundary County Boundary Observed Seep (Natural Drainage) Nearby Tributary Site Drainage Network ³ ^_Kings Bluff Intake Canal ChemoursFayettevilleWorks Start ofCape FearRiver Wilmington Fayetteville Raleigh Bladen BluffsIntake WO HuskeLock and Dam Greensboro Virginia North Carolina South Carolina Cape Fear River Watershed and Downstream Drinking Water Intakes Chemours Fayetteville Works, North Carolina Figure A2-4Raleigh Path: P:\PRJ\Projects\TR0795\Database and GIS\GIS\Onsite and Offsite Assessment Report\TR0795_Cape Fear River Watershed and Downstream Intakes.mxd; SSomnarain; 10/30/2019October 2019 ³Deep R i ver H awRiver LittleRiver CapeFearRiver 20 0 2010 Miles Notes:Basemap Source: Esri, Garmin, USGS, NPS Projection: NAD 1983 StatePlane North Carolina FIPS 3200 Feet; Units in Foot US Legend ^_Chemours Fayetteville Works Upper Basin Middle Basin Lower Basin Figure A2-5 Wind Rose Measurements (January 2018- May 2019) Chemours Fayetteville Works, North Carolina Raleigh October 2019 Wind Rose for Rain Events Notes: mph - miles per hour 1. Wind measurements collected at the Site for the period from 1 January 2018 to 15 May 2019. 2. Concentric circles indicate the relative proportion of winds from a given direction and speed. 3. Wedges represent the direction the winds are coming from. 4. Color indicates wind speed. 5. 575 total hours (5%) of rain and 10,738 total hours (95%) without rain at the Site for the period from1 January 2018 to 15 May 2019. Wind Rose for Full Data Set Physiographic Provinces of North Carolina Chemours Fayetteville Works, North Carolina Figure A3-1Raleigh 40 0 4020 Miles ³Path: P:\PRJ\Projects\TR0795\Database and GIS\GIS\Onsite and Offsite Assessment Report\TR0795_Geology.mxd; TIp; 10/30/2019October 2019 Projection: NAD 1983 StatePlane North Carolina FIPS 3200 Feet; Units in Foot US Notes:1. Physiography layer obtained fromNorth Carolina Geological Survey (NCGS).2. Basemap source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community. Legend ^_Chemours Fayetteville Works Blue Ridge Piedmont Coastal Plain Fall Line Outfall 002 Historical AirSource and Process Water ReleaseLocation Historical Process Water Release Locations Old Outfall 002Historical ProcessWater ConveyancePrior to 2012 Historical Path ofProcess WaterConveyance HistoricalAirSource Ca peFe ar Ri ver Old O utfa ll002 WillisCreek Historical Sources of PFAS Chemours Fayetteville Works, North Carolina Figure A4-1Raleigh 1,000 0 1,000500 Feet ³ October 2019 Projection: NAD 1983 StatePlane North Carolina FIPS 3200 Feet; Units in Foot US Legend Site Conveyance Network Site Boundary Nearby Tributary Observed Seep (Natural Drainage) Terracotta Pipe Areas at Site Chemours Monomers IXM Area Chemours Polymer Processing Aid Area Wastewater Treatment Plant Area Historical Onsite Sources Air Water Notes:1. Historical air sources are manufacturing areas where PFAS wereemitted to air. The Site by December 31, 2019 will be operating aThermal Oxidizer that in combination with other control technologiesreduces facility wide air emissions of PFAS by 99%.2. Historical water sources are areas where process water wasreleased to soil and groundwater. Site infrastructure upgrades andoffsite disposal of process water has mitigated these sources. Basemap Sources: Esri, DigitalGlobe, GeoEye, EarthstarGeographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN,and the GIS User Community Path: P:\PRJ\Projects\TR0795\Database and GIS\GIS\Onsite and Offsite Assessment Report\TR0795_HistoricalOnsiteSources.mxd; 10/31/2019 Sources: E sri , H ERE , G armi n, In termap, i ncrement P Co rp. , G EB CO , US GS , FAO , N PS, NR CAN , G eoBa se, I GN , Kad aster NL, Ordnance S urve y, Esri Japan , ME TI , Esri Ch ina (Hong K ong), swi sst opo, © O penS treet Map contri but ors, and the G IS U ser C ommun it y HFPO-DA Concentrations in Offsite Wells Chemours Fayetteville Works, North Carolina Figure A4-2ARaleigh 2 0 21 Miles ³Path: P:\PRJ\Projects\TR0795\Database and GIS\GIS\Onsite and Offsite Assessment Report\TR0795_Offsite HFPO-DA Concentrations with Offsite MW.mxd Last Revised: 10/31/2019 Author: TIpOctober 2019 Projection: NAD 1983 StatePlane North Carolina FIPS 3200 Feet; Units in Foot US N S W E 6 mi4 mi2 mi Notes:ng/L - nanograms per liter1. Black lines represent cardinal directions (N, E, S, W)2. Basemap sources: Esri, HERE, Garmin, Intermap, increment P Corp., GEBCO, USGS, FAO, NPS, NRCAN,GeoBase, IGN, Kadaster NL, Ordnance Survey, Esri Japan, METI, Esri China (Hong Kong), swisstopo,© OpenStreetMap contributors, and the GIS User Community Legend HFPO-DA Concentrations (ng/L) Dry Non-detect < 10 10 - 70 70 - 140 140 - 1,400 > 1,400 Offsite Monitoring Well !(Offsite Private Well Site Boundary ") ") ") ") ") ") ") ") ") ") ") BLADEN-4S<3.7 CUMBERLAND-1S<3.7 CUMBERLAND-2S<4 UJ CUMBERLAND-5S<4 UJ ROBESON-1S<4 UJ BLADEN-4D<3.6 CUMBERLAND-1D<3.8 CUMBERLAND-2D<4 UJ CUMBERLAND-3D<4 UJ CUMBERLAND-4D<4 UJ CUMBERLAND-5D<4 UJ BLADEN-1D190 BLADEN-2D11 BLADEN-3D2.2 J ROBESON-1D6 J BLADEN-2S4.6 BLADEN-3S12 CUMBERLAND-3S10 J CUMBERLAND-4S110 J BLADEN-1SDRY Sources: Esri, HERE, Garmin, Intermap, increment P Corp., GEBCO, USGS, FAO, NPS, NRCAN, GeoBase, IGN, Kadaster NL, Ordnance Survey, Esri Japan,METI, Esri China (Hong Kong), (c) OpenStreetMap contributors, and the GIS User Community HFPO-DA Concentrations in Offsite Groundwater Monitoring Wells Chemours Fayetteville Works, North Carolina Figure A4-2B Legend Raleigh 2 0 21 Miles ³Path: P:\PRJ\Projects\TR0795\Database and GIS\GIS\Onsite and Offsite Assessment Report\TR0795_Offsite MW HFPO-DA.mxd Last Revised: 12/19/2019 Author: NBarNahoumDecember 2019 Projection: NAD 1983 StatePlane North Carolina FIPS 3200 Feet; Units in Foot US N S W E 6 mi4 mi2 mi Notes:ng/L - nanograms per liter< - Analyte not detected above associated reporting limit.J - Analyte detected. Reported value may not be accurate or precise.UJ - Analyte not detected. Reporting limit may not be accurate or precise.1. Black lines represent cardinal directions (N, E, S, W)2. The locations of Cumberland and Robeson well pairs are approximate.3. Due to the scale of the map, pairs of wells that are in close proximity have been offset for visibility. Therefore, the placement of these wells on this map do not reflect their true geographic coordinates.4. Basemap sources: Esri, HERE, Garmin, Intermap, increment P Corp., GEBCO, USGS, FAO, NPS, NRCAN, GeoBase, IGN, Kadaster NL, Ordnance Survey, Esri Japan,METI, Esri China (Hong Kong), swisstopo, © OpenStreetMap contributors, and the GIS User Community HFPO-DA Concentrations (ng/L) < 10 10 - 70 70 - 140 140 - 1,400 Site Boundary Dry Non detect ") ")") ") ")") ")") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ")") ") ") ")") ") ") ") ") ") ") ") ")") ") ")") ") ") ")") ") ") ") ") ")")") ") ") ")") ")") ") ")") ")")") ") ") ")")")") ") ") ") ") ") ") ")") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ")")") ") ")") ") ")") ") ")") ") ")") ") ")") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ")") ") ") ") ") ") ") ")")")")")") ") ") ") ") ") ") ")") ") ") ")")") ")") ") ") ") ") ") ") ")") ") ")") ") ") ") ")") ") ") ") ") ") ") ") ") ") ")") ")")")") ") ") ") ")") ") ") ") ")") ") ") ") ") ") ") ") ")") ")") ") ") ") ")")")") ") ") ") ") ")") ")") ") ") ") ")") ") ") ") ") ") ") ") ") ") ")") ") ") ") ")") ") ") ") ")") ") ") ") ") ")") ") ") ") ") ") ") ") ") ") ") ") ")")")") ")") ") ") ") ") ") ")") ") ") ") ") ") ") ") ") ") ") ")") ")") ")") ") ") ") ") ") ")")") ") ") ") ") ") ") ")")") ") ") ") ") ") ") ") ") ")") ") ")") ") ") ") ")")")") ")")") ") ")")")") ")")")") ")") ") ") ") ")")")")")")")")") ") ") ") ") ") ") ") ") ") ")")") ") ") ")") ") ") ") ") ")")")")")") ") ")")")") ") ") ")") ") ") ") ")")") ") ")") ") ") ") ") ") ")") ")")")")")")") ") ") ") ")") ") ") ")")")")")") ") ")")")")")") ")")") ") ") ") ") ") ") ")") ") ") ") ") ") ") ") ") ")") ") ") ") ") ")") ") ") ") ") ")") ")") ") ") ")") ") ") ") ") ")") ") ")")") ") ")") ")")") ") ")")")")")")")")")")")")") ")") ") ")") ") ")") ") ")") ") ")")") ") ") ")") ") ") ") ") ")") ") ") ")") ") ") ") ") ") ")")") ") ") ")")")") ") ")")") ") ") ") ") ")") ") ")")") ") ") ") ") ") ") ") ")") ") ") ")")")") ") ")")")") ") ") ")")") ") ") ") ")")") ") ") ") ")")") ") ")") ") ") ")") ") ")") ")") ")")") ") ")")")") ") ") ") ") ") ")") ") ")") ")") ") ") ") ")")")")")") ") ") ") ") ")") ") ")") ") ") ") ")")")") ") ") ") ") ") ")") ")") ")") ") ") ")") ") ") ") ") ") ")")")") ") ") ") ")")")")")")") ")") ") ") ") ") ") ") ") ") ") ") ") ")") ") ") ")") ") ") ")") ") ") ") ") ") ") ")") ")") ")")") ") ")") ")") ")")") ") ")")") ") ")")")") ") ")")")")")") ") ")") ") ")")") ") ") ")")")")") ") ") ") ") ") ")") ") ") ")") ") ") ") ") ") ") ") ") ") ") ") ") ")")")")")")")")") ") ")") ") ") ")") ") ") ")") ")") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ")") ") ")") ") ") ") ")") ")") ") ") ") ") ") ")")") ") ") ") ") ") ")") ") ")")")") ") ") ")")")") ") ") ")") ") ") ") ") ") ") ")")")") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ")")") ") ")") ") ") ") ") ") ") ") ") ")") ") ")")") ")")")") ") ")") ") ") ") ") ")") ") ")")") !( !( !( !( !( !( !( !( !( !( !(!( !( !( !( !( !( !( !( !( !(!( !( !( !( !(!( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !( !(!( !( !(!( !(!( !( !( !( !( !( !( !(!( !( !( Robeso n C o u n t yRobeso n C o u ntyBladen C o unt y Cumberla n d C o u nt yCumberland County Bladen County Identified Well Receptor Locations Chemours Fayetteville Works, North Carolina Figure A5-1 Legend Raleigh 2 0 21 Miles ³Path: P:\PRJ\Projects\TR0795\Database and GIS\GIS\Onsite and Offsite Assessment Report\TR0795_WellReceptor_PublicAndPrivate.mxd Last Revised: 10/30/2019 October 2019 Projection: NAD 1983 StatePlane North Carolina FIPS 3200 Feet; Units in Foot US Notes:1. Delineation of offsite private wells containing PFAS listed in Attachment C of the Consent Order is on-going. Additional private wells areexpected to be identified.2. Locations from public wells were sourced from the North Carolina Corporate Geographic Database. Earlier versions of this dataset mayexist. Retrieved from NC OneMap on September 24, 2019.3. Basemap Sources: Esri, HERE, Garmin, Intermap, increment P Corp., GEBCO, USGS, FAO, NPS, NRCAN, GeoBase, IGN, KadasterNL, Ordnance Survey, Esri Japan, METI, Esri China (Hong Kong), swisstopo, © OpenStreetMap contributors, and the GIS UserCommunity. ")Presently Identified Private Well !(Public Community Well Cape Fear River Site Boundary County Boundary Existing water lines Bladen County (2017 data) Robeson County (2018 data) Cumberland County (2018 data) !( !( !( Robeso n C o u n t yRobeso n C o u ntyBladen C o unt y Cumberla n d C o u nt yCumberland County Bladen County Wellhead Protection Areas Chemours Fayetteville Works, North Carolina Figure A5-2 Legend Raleigh 2 0 21 Miles ³Path: P:\PRJ\Projects\TR0795\Database and GIS\GIS\Onsite and Offsite Assessment Report\TR0795_WellheadProtectionAreas.mxd Last Revised: 10/30/2019 October 2019 Projection: NAD 1983 StatePlane North Carolina FIPS 3200 Feet; Units in Foot US Notes:1. The source of the Public Well layer is the North Carolina Corporate Geographic Database. Earlier versions of this dataset mayexist. Retrieved from NC OneMap on September 24, 2019.2. Wellhead Protection Areas last updated on 10/27/2016. The data was downloaded from ArcGIS Online, and was provided byNorth Carolina Department of Environmental Quality.3. Basemap Sources: Esri, HERE, Garmin, Intermap, increment P Corp., GEBCO, USGS, FAO, NPS, NRCAN, GeoBase, IGN,Kadaster NL, Ordnance Survey, Esri Japan, METI, Esri China (Hong Kong), swisstopo, © OpenStreetMap contributors, and the GISUser Community. !(Public Well within Wellhead ProtectionArea; PWS ID 0378030 Cape Fear River Site Boundary County Boundary Wellhead Protection Area Surface Water Bodies in Region Around Site Chemours Fayetteville Works, North Carolina Figure A5-3 Legend Raleigh 2 0 21 Miles ³Path: P:\PRJ\Projects\TR0795\Database and GIS\GIS\Onsite and Offsite Assessment Report\TR0795_SurfaceWaterBodies.mxd Last Revised: 10/30/2019 October 2019 Projection: NAD 1983 StatePlane North Carolina FIPS 3200 Feet; Units in Foot US Lake/Pond Wetland Stream/River Site Boundary CapeFearRiverNotes: 1. Surface water layers obtained from National Hydrography Dataset - USGS (www.nhd.usgs.gov)2. Basemap source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community. Cape Fear RiverIdentified Underground Structures Chemours Fayetteville Works, North Carolina Figure A5-4Raleigh ³ October 2019 Projection: NAD 1983 StatePlane North Carolina FIPS 3200 Feet; Units in Foot US Notes:1. Utilities map was last updated on September 24, 2019. Map is maintainedby KBR Inc.2. Additional underground tanks will be added to this map when identified. Other updates may also be added to this map as additional information is provided.3. The outline of the River shown on this figure is approximate (River outline basedon compilation of open data sources from ArcGIS online service and NorthCarolina Department of Environmental Quality Online GIS - Major Hydro shapefile).4. Basemap source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics,CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community. 500 0 500250 Feet Path: P:\PRJ\Projects\TR0795\Database and GIS\GIS\Onsite and Offsite Assessment Report\TR0795_Underground Structures.mxd Last Revised: 10/30/2019 Author: jkasunic0.5 0 0.50.25 Miles ³ Legend Nearby Tributary Site Boundary Sewers Fire and Natural Gas Lines Electric Lines Water Lines Fiber Optic LinesData/PRJ/Projects/TR0795/Database and GIS/Illustrator/Onsite and Offsite Assessment Report/Subsurface on site/TR0795_Subsurface Structures on Site.ai0.5 0 0.50.25 Miles ³ ")")")")")")")") ")")") ")") ")")")")") ") ") ")")")") ") ") ")")")") ")") ")")") ") ")") !( !( !( !( !(!( #* #*#* #* #*#*#* XW XW 1 2 3 4 5 6 7 8.1 8.2 9 10 11 12 13 14 15 16 17 18 19 20 21 22 2324 25 26 27 28 29 30 31 32 333435 36 37 38 39 40 41 C a p e Fear Ri ver WillisCreek Seep A Seep B Seep C Seep D Old Outfall 002 Summary of Geologic Mapping Observations Chemours Fayetteville Works, North Carolina Figure A6-1Raleigh 1,000 0 1,000500 Feet ³Path: P:\PRJ\Projects\TR0795\Database and GIS\GIS\Onsite and Offsite Assessment Report\TR0795_Onsite Geologic Mapping.mxd; jkasunic; 10/31/2019October 2019 Projection: NAD 1983 StatePlane North Carolina FIPS 3200 Feet; Units in Foot US Notes:1. Station Locations correspond to locations where outcrop exposures were visible and safely accessible. Additional information provided in Table 6-1.2. The outline of the River shown on this figure is approximate (River outline based on compilation of open data sources from ArcGISonline service and North Carolina Department of Environmental Quality Online GIS - Major Hydro shapefile).3. Basemap source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community. 0.5 0 0.50.25 Miles ³ Legend Station Locations XW Perched Zone #*Perched Clay !(Surficial ")Black Creek Confining Unit Inferred Lithologic Contacts Observed Seep Nearby Tributary Site Boundary Observed Exposed Lithologies Black Creek Confining Unit Surficial Perched Zone ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") ") !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A!'A !'A !'A C a p e Fear Ri ver PW-02 PW-04 LTW-01 LTW-03 LTW-04 PIW-1S PIW-6S LTW-02 LTW-05 PIW-1D PIW-2D PIW-3D PIW-5S PIW-4D PIW-10DRPIW-10S PIW-7D PIW-8D PIW-7S PIW-9S PIW-9D PW-10 PW-11 HP-1 HP-2 HP-3 HP-4 HP-5 HP-6 HP-7 HP-8 HP-10 HP-12 HP-13 HP-14 HP-15 HP-17 HP-18 HP-19 HP-20 HP-21 HP-22 HP-24 HP-27 HP-28 HP-29 HP-30 HP-26 HP-25 HP-23 HP-9 HP-11 HP-32 HP-16 Seep A Seep B Seep C Seep D HPT and Well Locations Chemours Fayetteville Works, North Carolina Figure A6-2Raleigh 500 0 500250 Feet ³Path: P:\PRJ\Projects\TR0795\Database and GIS\GIS\Onsite and Offsite Assessment Report\TR0795_HPT and Co-Located Well Locations.mxd; jkasunic; 10/31/2019October 2019 Projection: NAD 1983 StatePlane North Carolina FIPS 3200 Feet; Units in Foot US Notes:HPT - Hydraulic Profiling ToolEC - Electrical Conductivity1. Due to the scale of the map, pairs of wells that are in close proximity have been offset for visibility. Therefore, the placement of these wells on this map may not exactly reflect their true geographic coordinates.2. HP- locations were not surveyed and considered approximate.3. PIW and PW-well locations were sureyed by a licensed North Carolina Surveyor.4. The outline of the River shown on this figure is approximate (River outline based on compilation of open data sources from ArcGISonline service and North Carolina Department of Environmental Quality Online GIS - Major Hydro shapefile).5. Basemap source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community. 1 0 10.5 Miles ³ LegendWell Type !'A Surficial Aquifer !'A Floodplain Deposits !'A Black Creek Aquifer WillisCreek ")HPT/EC Boring Observed Seep Nearby Tributary Site Boundary ") !+! !+! !+! !+! !+! !+! !+! !+! !+! !+! !+! !+! !+! !+! !+! !+! !+! !+! !+! !+! !+! !+! !+! !+! !+! !+!!+! !+! !+! !+! !+! !+! !+! !+! !'A !'A !'A!'A !'A !'A !'A !'A !'A !'A !'A !'A!'A !'A!'A!'A!'A!'A!'A !'A !'A !'A !'A!'A !'A !'A !'A!'A !'A !'A !'A !'A !'A !'A !'A !'A!'A!'A !'A !'A !'A !'A !'A !'A !'A!'A !'A !'A!'A !'A!'A!'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A!'A!'A!'A!'A!'A !'A !'A !'A !'A !'A!'A!'A !'A !'A!'A !'A !'A!'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A!'A !'A !'A!'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A!'A !'A !'A !'A !'A !'A !'A !'A CapeFearRi verDW R Dupo n t Sta tio n BCA-02 BCA-03R N AF-05B N AF-08B N AF-11B PZ-22 SMW -02BSMW -03B SMW -04B SMW -05P SMW -06BSMW -08B Bladen-1D PIW-10DR PIW-1D PIW-3D PIW-4D PIW-5S PIW-6S PIW-7D PIW-9DPIW-9S PW-02 PW-03 PW-05 PW-09 PW-10R PW-12 PW-14 PW-15R BCA-01 BCA-04 FTA-01FTA-02 FTA-03 IN SITU-01 IN SITU-02 LTW -01 LTW -02 LTW -03 LTW -04 LTW -05MW -11 MW -12S MW -13D MW -14D MW -15DRR MW -16D MW -17D MW -18D MW -19D MW -1S MW -20D MW -21D MW -22D MW -23 MW -24 MW -25 MW -26 MW -27 MW -28 MW -2S MW -30MW -7S MW -8S MW -9S N AF-01 N AF-02 N AF-03 N AF-04 N AF-05A N AF-06N AF-07 N AF-08A N AF-09 N AF-10 N AF-11A N AF-12 N AF-13 PZ-11 PZ-12 PZ-13PZ-14 PZ-15PZ-17 PZ-24 PZ-25 PZ-26PZ-27 PZ-28 SMW -01 SMW -02SMW -03 SMW -04A SMW -05 SMW -06 SMW -07 SMW -08 SMW -09 SMW -10 SMW -11 SMW -12 Bladen-1S PIW-10S PIW-1S PIW-2D PIW-7S PIW-8D PW-01 PW-04 PW-06 PW-07 PW-11 PW-13 PZ-19R PZ-20RPZ-21R PZ-35 Onsite Monitoring Well Network Chem o urs Fa yetteville W o rks, N o rth Ca ro lin a Figure A6-3Ra leigh 1,000 0 1,000500 Feet ³Pa th: P:\PRJ\Pro jec ts\TR0795\Da ta b a se a n d GIS\GIS\On site a n d Offsite Assessm en t Repo rt\TR0795_ On siteW ellN etwo rk_ N o HPT.m xd; jka sun ic ; 10/31/2019 Oc to b er 2019 Pro jec tio n : N AD 1983 Sta tePla n e N o rth Ca ro lin a FIPS 3200 Feet; Un its in Fo o t US N o tes:1. Due to the sc a le o f the m a p, pa irs o f wells tha t a re in c lo se pro xim ity ha ve b een o ffset fo r visib ility. Therefo re, the pla c em en t o f these wells o n this m a p do n o t reflec t their true geo gra phic c o o rdin a tes. 2. The o utlin e o f the River sho wn o n this figure is a ppro xim a te (River o utlin e b a sed o n c o m pila tio n o f o pen da ta so urc es fro m Arc GIS o n lin e servic e a n d N o rth Ca ro lin a Depa rtm en t o f En viro n m en ta l Qua lity On lin e GIS - Ma jo r Hydro sha pefile).3. Ba sem a p so urc e: Esri, Digita lGlo b e, Geo Eye, Ea rthsta r Geo gra phic s, CN ES/Airb us DS, USDA, USGS, Aero GRID, IGN , a n d the GIS User Co m m un ity. Legen d !'A Perc hed Zo n e !'A Surfic ia l Aquifer !'A Flo o dpla in Depo sits !'A Bla c k Creek Aquifer ")DW R Dupo n t Sta tio n (V 42V ) W ell Cluster !+!2019 In sta lled W ells Site Bo un da ry !+! !+! !+! !+! !+! !+! !+! !+! !+! !+! !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A PZ-31 PZ-32 PZ-33 PZ-34 MW-31 MW-32 MW-33 MW-34 MW-35 MW-36 PZ-29 50 0 5025 Feet Pilo t Test Area fo r Plum eSto p™ 0.5 0 0.50.25 Miles ³ 117115 113 112 110108 104 102 97 3 93 95 96 98 105 106 116 79 81 83 85 8789 2 6 4 8 10 42 43 4139 46 48 50 51 54 57 60 63 67 70 72 76 73 74 12 14 16 18 20 22 24 26 28 30 32 34 36 38 44 45 53 56 59 62 65 68 71 101 103 107 109 118 119 49 99 114 7 13 15 17 19 21 23 25 27 29 31 33 35 37 40 94 91 92 9088 86 84 82 80 78 77 75 69 6664 61 58 55 52 47 111 1 5 9 11 100 Cape Fear River Survey -Temperature Measurement Locations Chemours Fayetteville Works, North Carolina Figure A6-4Raleigh 500 0 500250 Feet ³Path: P:\PRJ\Projects\TR0795\Database and GIS\GIS\Onsite and Offsite Assessment Report\TR0795_Temperature Measurement Locations.mxd; TIp; 10/30/2019October 2019 Projection: NAD 1983 StatePlane North Carolina FIPS 3200 Feet; Units in Foot US Notes:1. Temperature measurements were collected at locations west of the thalweg from August 5 to 9, 2019. 2. Location of thalweg was estimated in the field based on field measurements of maximum depth using a depth finder.3. All samples were located in the Cape Fear River. The outline of the River shown on this figure is approximate (River outline based on compilation of open data sources from ArcGIS online service and North Carolina Department of Environmental Quality Online GIS - Major Hydro shapefile).CapeFearRiver0.55 0 0.550.275 Miles ³ Legend Temperature MeasurementLocation Observed Seep Site Boundary 109 Temperature Gradient Results Chemours Fayetteville Works, North Carolina Figure A6-5Raleigh 400 0 400200 Feet ³Path: P:\PRJ\Projects\TR0795\Database and GIS\GIS\Onsite and Offsite Assessment Report\TR0795_Temperature Gradient Results.mxd; TIp; 10/30/2019October 2019 Projection: NAD 1983 StatePlane North Carolina FIPS 3200 Feet; Units in Foot US Notes:1. Temperature measurements were collected at locations west of the thalweg from August 5 to 9, 2019. 2. Location of thalweg was estimated in the field based on field measurements of maximum depth using a depth finder.3. All samples were located in the Cape Fear River. The outline of the River shown on this figure is approximate (River outline based on compilation of open data sources from ArcGIS online service and North Carolina Department of Environmental Quality Online GIS - Major Hydro shapefile).CapeFearRiver0.7 0 0.70.35 Miles Legend Temperature difference betweenporewater and 6 inches abovesediment 0 - 0.5 °C 0.5 - 6.0 °C Observed Seep Nearby Tributary Site Boundary Area of Observed TemperatureDifferential > 0.5 °C 47 40 49 45 44 38 50 48 46 41 43 42 39 69 75 77 78 80 71 74 76 72 79 73 70 94 99 98 96 97 95 107 106 105 104 108 114 118 116 113 115 117 Area 1 Area 2 Area 3 Area 4 Area 5 ³ 50 0 5025 Feet 80 0 8040 Feet 60 0 6030 Feet 60 0 6030 Feet 50 0 5025 Feet @A@A @A@A @A@A @A@A @A@A @A@A @A@A @A@A @A@A @A@A Bladen-1DBladen-1S Bladen-2DBladen-2S Bladen-3D Bladen-3S Bladen-4DBladen-4S Cumberland-1DCumberland-1S Cumberland-2DCumberland-2S Cumberland-3DCumberland-3S Cumberland-4DCumberland-4S Cumberland-5DCumberland-5S Robeson-1DRobeson-1S Sources: Esri, HERE, Garmin, Intermap, increment P Corp., GEBCO, USGS, FAO, NPS, NRCAN, GeoBase, IGN, Kadaster NL, Ordnance Survey, Esri Japan,METI, Esri China (Hong Kong), (c) OpenStreetMap contributors, and the GIS User Community Offsite Monitoring Wells Chemours Fayetteville Works, North Carolina Figure A6-6 Legend Raleigh 2 0 21 Miles ³Path: P:\PRJ\Projects\TR0795\Database and GIS\GIS\Onsite and Offsite Assessment Report\TR0795_Offsite_Wells.mxd Last Revised: 10/31/2019 Author: NBarNahoumOctober 2019 Projection: NAD 1983 StatePlane North Carolina FIPS 3200 Feet; Units in Foot US N S W E 6 mi4 mi2 mi Notes: 1. Black lines represent cardinal directions (N, E, S, W)2. Due to the scale of the map, pairs of wells that are in close proximity have been offset for visibility. Therefore, the placement ofthese wells on this map do not reflect their true geographic coordinates.3. Basemap sources: Esri, HERE, Garmin, Intermap, increment P Corp., GEBCO, USGS, FAO, NPS, NRCAN, GeoBase, IGN, Kadaster NL, Ordnance Survey, Esri Japan, METI, Esri China (Hong Kong), swisstopo, © OpenStreetMap contributors, and the GIS User Community Well Type @A Black Creek Aquifer @A Surficial Aquifer Site Boundary !(!( !( !( !( !( !( !( !( !( !( Seep A Seep B Seep C Seep D Old Outfall 002Cape Fear Ri ver Willis Creek W i l l i s C ree k GeorgiaBranchCreek Selected PFAS Concentrations in Onsite Soil Chemours Fayetteville Works, North Carolina Figure A7-1Raleigh ³Path: P:\PRJ\Projects\TR0795\Database and GIS\GIS\Onsite and Offsite Assessment Report\TR0795_OnsiteAnalyteDistributionInSoil.mxd Last Revised: 10/31/2019 Author: jkasunicOctober 2019 Projection: NAD 1983 StatePlane North Carolina FIPS 3200 Feet; Units in Foot US 1,500 0 1,500750 Feet Notes:All measurements are in ng/kg (nanograms per kilogram).< - Analyte not detected above associated reporting limit.J - Analyte detected. Reported value may not be accurate or precise.UJ - Analyte not detected. Reporting limit may not be accurate or precise.* Results from the field duplicate sample are not shown but results are identical tothe parent sample.**Other analytes were detected, but not shown.1. Only unsaturated soil samples shown.2. The outline of the River shown on this figure is approximate (River outline basedon compilation of open data sources from ArcGIS online service and North Carolina Department of Environmental Quality Online GIS - Major Hydro shapefile).3. Basemap source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community. 0.5 0 0.50.25 Miles ³ Legend !(Soil Sample Location Observed Seep Nearby Tributary Site Boundary Depth(ft bgs)HFPO-DA PFMOAA PFO2HxA PFO5DA PMPA 8.5-9 <250 <1,000 UJ <1,000 UJ <1,000 UJ <1,000 UJ <1,000 UJ <1,000 UJ <1,000 UJ <1,000 UJ<25010-11 PW-09 Depth(ft bgs)HFPO-DA PFMOAA PFO2HxA PFO5DA PMPA 11-12 1,200 <1,000 <1,000 <1,000 <1,000 PW-01 12-13 850 <1,000 R <1,000 UJ <1,000 UJ <1,000 UJ Depth(ft bgs)HFPO-DA PFMOAA PFO2HxA PFO5DA PMPA 3.5-4 570 <1,000 <1,000 1,260 U <1,000 8-8.5 28,000 7,300 10,000 J 5,200 27,000 J PW-10** Depth(ft bgs)HFPO-DA PFMOAA PFO2HxA PFO5DA PMPA 14-15 1,500 <1,000 UJ <1,000 UJ <1,000 <1,000 PW-02 Depth(ft bgs)HFPO-DA PFMOAA PFO2HxA PFO5DA PMPA 6.5-7 1,700 <1,000 1,300 1,200 2,500 PW-03 Depth(ft bgs)HFPO-DA PFMOAA PFO2HxA PFO5DA PMPA 16-17 <250 <1,000 <1,000 <1,000 <1,000 PW-06 Depth(ft bgs)HFPO-DA PFMOAA PFO2HxA PFO5DA PMPA 14-15 <250 <1,000 <1,000 <1,000 <1,000 PW-07* Depth(ft bgs)HFPO-DA PFMOAA PFO2HxA PFO5DA PMPA 16-17 620 <1,000 <1,000 <1,000 <1,000 PW-11 Depth(ft bgs)HFPO-DA PFMOAA PFO2HxA PFO5DA PMPA 25-26 <250 <1,000 <1,000 <1,000 <1,000 PW-13 /Data/PRJ/Projects/TR0795/Database and GIS/Illustrator/Onsite and Offsite Assessment Report/Soil Concentrations/TR0795_Figure7-1_Onsite PFAS Distribution in Soil.aiDepth(ft bgs)HFPO-DA PFMOAA PFO2HxA PFO5DA PMPA PW-05 12-13 850 <1,000 R <1,000 UJ <1,000 UJ <1,000 UJ Notes NGVD29 - National Geodetic Vertical Datum of 1929 NAVD88 – North American Vertical Datum of 1988 USGS - United States Geological Survey 1. Figure includes water level data from January 1, 2014 to September 10, 2019. 2. Water level data obtained for USGS gauges at Fayetteville (USGS 02104000), W.O.Huske (USGS 2105500) and Lock and Dam #1 (USGS 02105769) from National Water Information System (URL: https://waterdata.usgs.gov/nwis/inventory/?site_no=02105769, date accessed: 2019-09-24) 3. Measured water level datum converted from feet NGVD29 to feet NAVD88 using National Oceanic and Atmospheric Administration’s VDatum tool available at vdatum.noaa.gov. Cape Fear River Stage Variation Chemours Fayetteville Works, North Carolina Figure A8-1 Raleigh October 2019 4. Line inside boxes represents the median water level. 5. Bottom and top of boxes represent the 25th and 75th percentile water levels, respectively. 6. Extent of whiskers represent range of observed water levels. 0 10 20 30 40 50 60 70 80 90 Fayetteville W.O. Huske Lock and Dam #1Cape Fear River Water Level (feet NAVD88)USGS Gauge Location @A @A@A @A @A @A @A @A @A @A @A @A @A @A @A@A@A@A@A@A @A @A @A @A @A@A @A @A @A@A @A @A@A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A@A@A@A@A@A @A @A @A@A @A @A @A @A @A @A @A C a p e FearRi ver W illis C r e e k Seep A Seep B Seep C Seep D FTA-01133.61 FTA-02132.28 FTA-03132.9 MW-1S130.69 MW-2S130.36 MW-7S136.11 MW-8SDRY MW-9S132.81 MW-11125.13 MW-12S131.61 MW-23133.93 MW-25133.29 MW-27131.99MW-28130.2 MW-30133.01 NAF-01139.41 NAF-02139.43NAF-04139.99 NAF-06134.48 NAF-07138.92 NAF-08A 138.54NAF-09136.38NAF-10135.76 NAF-11A130.58 NAF-13134.94 PW-01133.55 PZ-11137.02 PZ-12130.74 PZ-13136.73 PZ-14132.12 PZ-15135.12 PZ-17121.81 PZ-19R135.54 PZ-20R 135.47 PZ-21R136.22 PZ-24133.36 PZ-25126.24 PZ-26134.8 PZ-27133.97 PZ-28135.14 PZ-35136.32 SMW-02131.95SMW-03DRYSMW-04A110.98 SMW-05125.05 SMW-06126.04 SMW-07127.98 SMW-08DRY NAF-05ANM MW-24NM NAF-03NM NAF-12NM MW-26135.9913013 0128 132 136 13813414514010090 807 513012550 40 706085655545135 115 1 0 5 9 5 35105 95 7570125 120 95 8580 155150504515 0 145155145155 145110105 1451 4 0 706545 40 4540453512060 1357 5 70 4045150150 120 115105100 9565555045 40 15 5 155155150 145145150 140130125125125 115 105110 95 90 9570 70 706055 5050505 0 4540 403 5 353 5 145 145 145 145 35 Groundwater Elevation Map - Perched ZoneOctober 2019 Chemours Fayetteville Works, North Carolina Figure A9-1Raleigh ³Path: P:\PRJ\Projects\TR0795\Database and GIS\GIS\Onsite and Offsite Assessment Report\TR0795_GW_Contours_Maps_PerchedZone_Oct2019.mxd Last Revised: 10/31/2019 Author: jkasunicOctober 2019 Projection: NAD 1983 StatePlane North Carolina FIPS 3200 Feet; Units in Foot US 1,000 0 1,000500 Feet Notes:NM - Not measuredft NAVD88 - feet North American Vertical Datum 1988.1. Depth to water measurements collected on October 15, 2019 used to generate contours.2. Groundwater contours were visually interpolated using water level measurements collected 15 October 2019.3. MW-26 and PZ-25 water levels not used in contouring.4. Topographic contours from LiDAR Digital Elevation Model ground surfaceelevations collected by NC Dept. of Public Safety published 18 October 2015.5. Seep locations identified visually as reported in Geosyntec, 2019. Seeps and Creeks Investigation Report. Chemours Fayetteville Works. 26 August 2019.6. The outline of the River shown on this figure is approximate (River outline basedon compilation of open data sources from ArcGIS online service and North Carolina Department of Environmental Quality Online GIS - Major Hydro shapefile).7. Basemap source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community. 0.5 0 0.50.25 Miles ³ Legend @A Monitoring Well @A Monitoring Well Used forGroundwater Extraction Groundwater Contours (ftNAVD88) - 2 feet interval Potentiometric SurfaceInferred Observed Seep Nearby Tributary Ground SurfaceElevation Contour (ftNAVD88) - 5 ft interval Site Boundary @A @A @A@A@A@A @A @A @A @A @A@A 1 1 5 14512 0 1 2 5 145 135 1401351 3 0 140 MW-31131.98 PZ-31 130.7 PZ-34 131.88 PZ-33132.72 PZ-32133.16 PZ-29133.29 MW-36 132.08 MW-35132.29 MW-34132.19 MW-33132.56 MW-32132.36132 13470 0 7035 Feet ³Inset @A @A @A @A @A@A@A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A@A @A @A C a p e FearRi ver W illis C r e e k Seep A Seep B Seep C Seep D INSITU-01111.74 MW-13D104.33MW-14D109.67 MW-15DRR103.37 MW-16D 113.02MW-17D117.09 MW-18D87.28 MW-19D88.24 MW-20D89.51 MW-21D105.71 MW-22D113.82 NAF-08B95.99 NAF-11B94.24 PIW-1D32.81 PIW-5S60.46 PIW-9S49.06 PIW-10S57.66 PW-0290.05 PW-03105.57 PW-0469.9 PW-05121.25 SMW-01123.51 SMW-02BDRYSMW-04B102.94 SMW-05P105.31 SMW-06B103.15 SMW-08B108.29 SMW-0985.2 SMW-1157.87 NAF-05BNM INSITU-02DRY 8085 8590105 95 75100 70 120 75 65 115 110 90 95 100 80 14514010090 807 513012550 40 706085655545135 115 1 0 5 9 5 35105 95 7570125 120 95 8580 155150504515 0 145155145155 145110105 1451 4 0 706545 40 4540453512060 1357 5 70 4045150150 120 115105100 9565555045 40 15 5 155155150 145145150 140130125125125 115 105110 95 90 9570 70 706055 5050505 0 4540 403 5 353 5 145 145 145 145 35 Groundwater Elevation Map - Surficial AquiferOctober 2019 Chemours Fayetteville Works, North Carolina Figure A9-2Raleigh ³Path: P:\PRJ\Projects\TR0795\Database and GIS\GIS\Onsite and Offsite Assessment Report\TR0795_GW_Contours_Maps_SurficialAquifer_Oct2019.mxd Last Revised: 10/31/2019 Author: jkasunicOctober 2019 Projection: NAD 1983 StatePlane North Carolina FIPS 3200 Feet; Units in Foot US 1,000 0 1,000500 Feet Notes:NM - Not measuredft NAVD88 - feet North American Vertical Datum 1988.1. Depth to water measurements collected on October 15, 2019 used to generate contours.2. Groundwater contours were visually interpolated using water level measurements collected 15 October 2019.3. Topographic contours from LiDAR Digital Elevation Model ground surfaceelevations collected by NC Dept. of Public Safety published 18 October 2015.4. Seep locations identified visually as reported in Geosyntec, 2019. Seeps and Creeks Investigation Report. Chemours Fayetteville Works. 26 August 2019.5. The outline of the River shown on this figure is approximate (River outline basedon compilation of open data sources from ArcGIS online service and North Carolina Department of Environmental Quality Online GIS - Major Hydro shapefile).6. Basemap source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community. 0.5 0 0.50.25 Miles ³ Legend @A Monitoring Well Groundwater Contours (ftNAVD88) - 5 feet interval Potentiometric Surface Inferred Inferred GroundwaterFlow Direction Observed Seep Nearby Tributary Ground SurfaceElevation Contour (ftNAVD88) - 5 ft interval Site Boundary @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A @A W illis C r e e k Ca p e Fear Ri verSeep A Seep B Seep C Seep D BCA-0187.38 BCA-0274.55 BCA-03R 101.27 BCA-04121.55 LTW-0137.3 LTW-0242.19 LTW-0542.35 PIW-1S32.59PIW-2D64.55 PIW-3D35.8 PIW-4D41.68 PIW-6S38.6 PIW-7D42.69 PIW-8D41.11 PIW-9D42.08 PIW-10DR61.28 PW-0952.24 PW-10R48.15 PW-1139.6 PW-1292.65 PW-13119.79 PW-1486.86 PW-15R76.96 PZ-2244.06 SMW-1233.44 CAPE FEAR WATER LEVEL29.65 SMW-03B93.4 SMW-1046.69 110 60 90 50 100 12 0 80 70 40 14514010090 807 513012550 40 70609585135 115 1 0 5 6 5 4511055105 95 7570125 120 95 8580 155150504515 0 145155145155 145 1451 4 0 706545 40 45404535120353060 1357 5 75 4045150150 120 115105105100 9565555045 40 15 5 155155150 145145150 140130125125125 115 105110 95 90 9570 70 70 706055 5050505 0 4540 403 5 353 5 145 145 145 145 35 Groundwater Elevation Map - Black Creek AquiferOctober 2019 Chemours Fayetteville Works, North Carolina Figure A9-3Raleigh ³Path: P:\PRJ\Projects\TR0795\Database and GIS\GIS\Onsite and Offsite Assessment Report\TR0795_GW_Contours_Maps_BlackCreek_Oct2019.mxd Last Revised: 10/31/2019 Author: jkasunicOctober 2019 Projection: NAD 1983 StatePlane North Carolina FIPS 3200 Feet; Units in Foot US 1,000 0 1,000500 Feet Notes:ft NAVD88 - feet North American Vertical Datum 1988.1. Depth to water measurements collected on October 15, 2019 used to generate contours.2. Groundwater contours were visually interpolated using water level measurements collected 15 October 2019.3. Cape Fear River water level indicated is median value for October 15, 2019 measured at the W.O. Huske Dam (USGS 2105500). Data obtained from National Water Information System (URL: https://waterdata.usgs.gov/nwis/ inventory/?site_no=02105769, date accessed: 2019-10-23).4. Topographic contours from LiDAR Digital Elevation Model ground surfaceelevations collected by NC Dept. of Public Safety published 18 October 2015.5. Seep locations identified visually as reported in Geosyntec, 2019. Seeps and Creeks Investigation Report. Chemours Fayetteville Works. 26 August 2019.6. The outline of the River shown on this figure is approximate (River outline basedon compilation of open data sources from ArcGIS online service and North Carolina Department of Environmental Quality Online GIS - Major Hydro shapefile).6. Basemap source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community. 0.5 0 0.50.25 Miles ³ Legend @A Monitoring Well Groundwater Contours(ft NAVD88) - 10 feetinterval Potentiometric SurfaceInferred Inferred GroundwaterFlow Direction Observed Seep Nearby Tributary Ground SurfaceElevation Contour (ftNAVD88) - 5 ft interval Site Boundary @A@A @A@A @A@A @A@A @A@A @A@A @A@A @A@A @A@A @A@A @A@A @A@A @A@A @A@A @A@A @A@A @A@A @A@A @A@A @A CapeFearRiverWP1: NAF-11A (S) / NAF-11B (D) WP2: SMW-06 (S) / SMW-06B (D) WP3: SMW-04A (S) / SMW-04B (D) WP4: SMW-05 (S) / SMW-05P (D) WP5: MW-30 (S) / PW-03 (D) WP6: NAF-08A (S) / NAF-08B (D) WP7: MW-23 (S) / BCA-02 (D) WP8: PIW-9S (S) / PIW-9D (D) WP9: PIW-10DR (D) / PIW-10S (S) WP10: PIW-5S (S) / PW-10R (D) WP11: PW-02 (S) / BCA-01 (D) WP12: SMW-11 (S) / PW-09 (D) WP13: MW-21D (S) / PW-12 (D) WP14: BCA-04 (D) / WP14: PW-05 (S) WP15: PW-03 (S) / PW-14 (D) WP16: PIW-1D (D) / PIW-1S (S) WP17: PIW-7D (D) / PIW-7S (S) WP18: PZ-22 (D) / LTW-04 (S) WP19: MW-25 (S) / PZ-25 (S) WP20: Old Outfall-002 (S) / PW-11 (D) 10/15/2019-0.22 10/15/2019-0.3 10/15/2019-1.51 10/15/2019-3.62 10/15/201912.31 10/15/201913.06 10/15/20192.67 10/15/201922.89 10/15/201927.44 2019-10-155.63 10/15/2019-0.18 10/15/20191.03 10/15/201918.71 10/15/201959.38 10/15/20196.98 10/15/20197.05 10/15/201919.74 10/15/201936.34 10/15/201942.55 10/15/20198.04 WillisCreek Calculated Vertical Gradients BetweenSelected Stratigraphic Units Chemours Fayetteville Works, North Carolina Figure A9-4Raleigh ³Path: P:\PRJ\Projects\TR0795\Database and GIS\GIS\Onsite and Offsite Assessment Report\TR0795_Calculated_Vertical_Gradients_Oct2019.mxd Last Revised: 10/31/2019 Author: jkasunicOctober 2019 Projection: NAD 1983 StatePlane North Carolina FIPS 3200 Feet; Units in Foot US 1,000 0 1,000500 Feet Notes:1. Positive vertical gradients (i.e. potential for downward flow) are colored in green.Negative vertical gradients (i.e. potential for upward flow) are colored in red.2. The outline of the River shown on this figure is approximate (River outline basedon compilation of open data sources from ArcGIS online service and North Carolina Department of Environmental Quality Online GIS - Major Hydro shapefile).3. WP corresponds to well pair ID listed in Table 9-2.4. (s) and (d) refers to shallow and deep well of well pair.5. Basemap source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community. 0.5 0 0.50.25 Miles ³ Legend @A Black Creek Aquifer @A Floodplain Deposits @A Perched Aquifer; Perched Zone @A Surficial Aquifer Negative Vertical Gradients Positive Vertical Gradients Nearby Tributary Site Boundary #* #* #* #* #*#* #* #* #* #* #* #* #*#* #* #* #* #* #* #* #*#* #* #* #* #* #* #* #* Seep A Seep B Seep C Seep D Old Outfall 002Ca p e F e a r Ri v erNC Highway 87Willis Creek Willis Creek GeorgiaBranchCreek Onsite PMPA Concentrations in Groundwater Chemours Fayetteville Works, North Carolina Figure A9-5Raleigh ³Path: P:\PRJ\Projects\TR0795\Database and GIS\GIS\Onsite and Offsite Assessment Report\TR0795_OnsiteAnalyteDistributionInGW.mxd Last Revised: 12/19/2019 Author: NBarNahoumDecember 2019 Projection: NAD 1983 StatePlane North Carolina FIPS 3200 Feet; Units in Foot US 1,000 0 1,000500 Feet Notes:ng/L - nanograms per liter 1. Samples were collected between June and November 2019.2. The outline of the River shown on this figure is approximate (River outline basedon compilation of open data sources from ArcGIS online service and North Carolina Department of Environmental Quality Online GIS - Major Hydro shapefile).3. Basemap source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community. 0.6 0 0.60.3 Miles ³ Legend Concentration (ng/L) < 10 10 - 100 100 - 1,000 1,000 - 10,000 10,000 - 100,000 100,000 - 1,000,000 > 1,000,000 Well Type !(Perched Zone Surficial Aquifer #*Black Creek Aquifer /Floodplain Deposits Observed Seep Nearby Tributary Site Boundary #* #* #* #* #*#* #* #* #* #* #* #*#* #* #* #* #* #* #* #* #* #* #* #* #* #* #* #* #* Seep A Seep B Seep C Seep D Old Outfall 002Ca p e F e a r Ri v erNC Highway 87Willis Creek Willis Creek GeorgiaBranchCreek Onsite PFMOAA Concentrations in Groundwater Chemours Fayetteville Works, North Carolina Figure A9-6Raleigh ³Path: P:\PRJ\Projects\TR0795\Database and GIS\GIS\Onsite and Offsite Assessment Report\TR0795_OnsiteAnalyteDistributionInGW.mxd Last Revised: 12/19/2019 Author: NBarNahoumDecember 2019 Projection: NAD 1983 StatePlane North Carolina FIPS 3200 Feet; Units in Foot US 1,000 0 1,000500 Feet Notes:ng/L - nanograms per liter 1. Samples were collected between June and November 2019.2. The outline of the River shown on this figure is approximate (River outline basedon compilation of open data sources from ArcGIS online service and North Carolina Department of Environmental Quality Online GIS - Major Hydro shapefile).3. Basemap source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community. 0.6 0 0.60.3 Miles ³ Legend Concentration (ng/L) < 10 10 - 100 100 - 1,000 1,000 - 10,000 10,000 - 100,000 100,000 - 1,000,000 > 1,000,000 Well Type !(Perched Zone Surficial Aquifer #*Black Creek Aquifer /Floodplain Deposits Observed Seep Nearby Tributary Site Boundary #* #* #* #* #* #* #* #*#* #* #* #*#* #* #* #* #* #* #* #* #* #* #* #* #* #* #* #* #* Seep A Seep B Seep C Seep D Old Outfall 002Ca p e F e a r Ri v erNC Highway 87Willis Creek Willis Creek GeorgiaBranchCreek Onsite HFPO-DA Concentrations in Groundwater Chemours Fayetteville Works, North Carolina Figure A9-7Raleigh ³Path: P:\PRJ\Projects\TR0795\Database and GIS\GIS\Onsite and Offsite Assessment Report\TR0795_OnsiteAnalyteDistributionInGW.mxd Last Revised: 12/19/2019 Author: NBarNahoumDecember 2019 Projection: NAD 1983 StatePlane North Carolina FIPS 3200 Feet; Units in Foot US 1,000 0 1,000500 Feet Notes:ng/L - nanograms per liter 1. Samples were collected between June and November 2019.2. The outline of the River shown on this figure is approximate (River outline basedon compilation of open data sources from ArcGIS online service and North Carolina Department of Environmental Quality Online GIS - Major Hydro shapefile).3. Basemap source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community. 0.6 0 0.60.3 Miles ³ Legend Concentration (ng/L) < 10 10 - 100 100 - 1,000 1,000 - 10,000 10,000 - 100,000 100,000 - 1,000,000 > 1,000,000 Well Type !(Perched Zone Surficial Aquifer #*Black Creek Aquifer /Floodplain Deposits Observed Seep Nearby Tributary Site Boundary $+$+$+$+ $+ $+$+$+ $+ $+$+$+$+$+$+$+$+ $+$+$+$+ $+ $+$+ $+ $+ $+ $+ $+ $+ Seep B Seep C Seep D Old Outfall 002 Seep ACapeFearRiverNC Highway 87W illi s Creek GeorgiaBranchCreek OLDOF-1130,000 OLDOF-2140,000OLDOF-3160,000OLDOF-4200,000 OLDOF-5290,000 SEEP-B-1350,000 SEEP-B-3-E445,000 SEEP-C-1340,000 SEEP-C-1-E2260,000 WC-12,200 WC-2680 WC-3560WC-4340 FTA-012,900 FTA-0290,000 FTA-0340,000 MW-12S52,000 MW-1S66,000 MW-2327,000 MW-24940,000 MW-2570,000 MW-27350,000MW-282,900 MW-2S84,000 MW-7S58,000 MW-9S21,000 PW-0153,000 PZ-1126,000 PZ-12110,000 PZ-1554,000 PZ-19R25,000 PZ-20R11,000 PZ-21R7,100 PZ-2463,000 PZ-26630 PZ-279,900 PZ-288,200 PZ-356,700 SMW-0278,000 SMW-0719,000 Perched Zone Groundwater, Willis Creek, Seeps andOld Outfall 002 Total Table 3+ PFAS Concentrations Chemours Fayetteville Works, North Carolina Figure A9-8Raleigh ³Path: P:\PRJ\Projects\TR0795\Database and GIS\GIS\Onsite and Offsite Assessment Report\TR0795_OnsiteAnalyteTotTable3_PerchedZone.mxd Last Revised: 12/19/2019 Author: NBarNahoumDecember 2019 Projection: NAD 1983 StatePlane North Carolina FIPS 3200 Feet; Units in Foot US 1,000 0 1,000500 Feet Notes:ng/L - nanograms per liter 1. Perched Zone groundwater data plotted are from samples collected between June and November 2019.2. Willis Creek, Seeps and Old Outfall 002 surface water data plotted from samplescollected in February 2019, the data set with greatest density of samples.3. The outline of the River shown on this figure is approximate (River outline basedon compilation of open data sources from ArcGIS online service and North Carolina Department of Environmental Quality Online GIS - Major Hydro shapefile).4. Basemap source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community. 0.5 0 0.50.25 Miles ³ Legend Concentration (ng/L) < 10 10 - 100 100 - 1,000 1,000 - 10,000 10,000 - 100,000 100,000 - 1,000,000 > 1,000,000 Well Type !(Perched Zone $+Surface Water Observed Seep Nearby Tributary Site Boundary $+$+$+ $+ $+$+$+ $+$+$+$+ $+ $+$+ $+ $+$+ $+ SEEP-B-4430,000 SEEP-B-4670,000 SEEP-B-3380,000 SEEP-B-2310,000 SEEP-A-9510,000 SEEP-A-8140,000 SEEP-A-7220,000 SEEP-A-4160,000 SEEP-A-3220,000 SEEP-A-2240,000 SEEP-A-12120,000 SEEP-A-11540,000 SEEP-A-10530,000 SEEP-B-3-A1460,000 SEEP-A-6140,000 SEEP-A-5180,000 SEEP-A-1230,000 MW-3077,000 PZ-14130,000 PZ-13260,000 NAF-1086,000 NAF-07280,000 NAF-03700,000 NAF-01120,000 NAF-08A420,000 NAF-125,400,000 NAF-061,700,000 NAF-024,700,000 NAF-09190,000 NAF-044,300,000 250 0 250125 Feet $+$+$+$+ $+ $+$+$+ $+ $+$+$+$+$+$+$+$+ $+$+$+$+ $+ $+$+ $+ $+ $+ $+ $+ $+ Seep C Seep D Old Outfall 002 Seep A Seep BCa p e F e a r Ri v erNC Highway 87W illis Creek GeorgiaBranchCreek INSITU-012,400 MW-13D340,000MW-14D250,000 MW-15DRR81,000 MW-16D4,200 MW-17D3,800 MW-18D1,500 MW-19D4,400 MW-20D24,000 MW-21D2,000 MW-22D4,700 PIW-10S16,000 PIW-1D46,000 PIW-9S260,000 PW-02140,000 PW-044,600 PW-054,200 PW-064,400 PW-074,000 SMW-016,200 SMW-04B70,000 SMW-05P350,000 SMW-08B350,000 SMW-09110,000 SMW-1113,000 OLDOF-1130,000 OLDOF-2140,000 OLDOF-3160,000 OLDOF-4200,000 OLDOF-5290,000 SEEP-B-3-E445,000 SEEP-C-1340,000 SEEP-C-1-E2260,000 WC-12,200 WC-2680 WC-3560WC-4340 Surficial Aquifer Groundwater, Willis Creek, Seeps andOld Outfall 002 Total Table 3+ PFAS Concentrations Chemours Fayetteville Works, North Carolina Figure A9-9Raleigh ³Path: P:\PRJ\Projects\TR0795\Database and GIS\GIS\Onsite and Offsite Assessment Report\TR0795_OnsiteAnalyteTotTable3_SurficialZone.mxd Last Revised: 12/19/2019 Author: NBarNahoumDecember 2019 Projection: NAD 1983 StatePlane North Carolina FIPS 3200 Feet; Units in Foot US 1,000 0 1,000500 Feet Notes:ng/L - nanograms per liter 1. Surficial groundwater data plotted are from samples collected between June and November 2019.2. Willis Creek, Seeps and Old Outfall 002 surface water data plotted from samplescollected in February 2019, the data set with greatest density of samples.3. The outline of the River shown on this figure is approximate (River outline basedon compilation of open data sources from ArcGIS online service and North Carolina Department of Environmental Quality Online GIS - Major Hydro shapefile).4. Basemap source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community. 0.5 0 0.50.25 Miles ³ Legend Concentration (ng/L) < 10 10 - 100 100 - 1,000 1,000 - 10,000 10,000 - 100,000 100,000 - 1,000,000 > 1,000,000 Well Type Surficial $+Surface Water Observed Seep Nearby Tributary Site Boundary $+$+$+ $+ $+$+$+ $+$+$+$+ $+ $+$+ $+ $+$+ $+ PW-03390,000 PIW-5S270,000 SEEP-B-4430,000 SEEP-B-4670,000 SEEP-B-3380,000 SEEP-B-2310,000 SEEP-B-1350,000 SEEP-A-9510,000 SEEP-A-8140,000 SEEP-A-5180,000 SEEP-A-4160,000 SEEP-A-3220,000 SEEP-A-1230,000 SEEP-A-12120,000 SEEP-A-11540,000 SEEP-B-3-A1460,000 SEEP-A-7220,000 SEEP-A-6140,000 SEEP-A-2240,000 SEEP-A-10530,000 250 0 250125 Feet #* #* #* #* #* #* #* #*#* #* #* #*#* #* #* #* #* #* #* #* #* #* #* #* #* #* #* #* #* $+$+$+$+ $+ $+$+$+ $+ $+$+$+$+$+$+$+$+ $+$+$+$+ $+ $+$+ $+ $+ $+ $+ $+ $+ Seep C Seep D Old Outfall 002 Seep A Seep BCape FearRiverNC Highway 87BCA-01110,000 BCA-02200,000 BCA-03R490,000 BCA-0427 LTW-05370,000 PIW-10DR110,000 PIW-2D26,000 PIW-3D41,000 PIW-7D220,000 PIW-8D670,000 PIW-9D290,000 PW-09ND PW-11280,000 PW-12ND PW-13ND SMW-03B660,000 SMW-10830 SMW-129,600 LTW-01140,000 PIW-7S54,000 OLDOF-1130,000 OLDOF-2140,000 OLDOF-3160,000 OLDOF-4200,000 OLDOF-5290,000 SEEP-B-3-E445,000 SEEP-C-1340,000 SEEP-C-1-E2260,000 WC-12,200 WC-2680 WC-3560WC-4340 Black Creek Aquifer/Floodplain Deposits Groundwater, Willis Creek, Seeps and Old Outfall 002 Total Table 3+ PFAS Concentrations Chemours Fayetteville Works, North Carolina Figure A9-10Raleigh ³Path: P:\PRJ\Projects\TR0795\Database and GIS\GIS\Onsite and Offsite Assessment Report\TR0795_OnsiteAnalyteTotTable3_BlackCreek_Floodplain.mxd Last Revised: 12/19/2019 Author: NBarNahoumDecember 2019 Projection: NAD 1983 StatePlane North Carolina FIPS 3200 Feet; Units in Foot US 1,000 0 1,000500 Feet Notes:ng/L - nanograms per liter 1. Black Creek groundwater data plotted are from samples collected betweenJune and November 2019.2. Willis Creek, Seeps and Old Outfall 002 surface water data plotted from samplescollected in February 2019, the data set with greatest density of samples.3. The outline of the River shown on this figure is approximate (River outline basedon compilation of open data sources from ArcGIS online service and North Carolina Department of Environmental Quality Online GIS - Major Hydro shapefile).4. Basemap source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community. 0.5 0 0.50.25 Miles ³ Legend Concentration (ng/L) < 10 10 - 100 100 - 1,000 1,000 - 10,000 10,000 - 100,000 100,000 - 1,000,000 > 1,000,000 Well Type #*Black Creek Aquifer/FloodpainDeposits $+Surface Water Observed Seep Nearby Tributary Site Boundary $+$+$+ $+ $+$+$+ $+$+$+$+ $+ $+$+ $+ $+$+ $+ #*#* #* #* #* #* #* #* #* PIW-4D5.9 PZ-22240,000 PW-14180,000 LTW-0278,000 PIW-6S250,000 LTW-04190,000 LTW-03220,000 PW-15R650,000 PW-10R190,000 SEEP-B-4670,000 SEEP-B-3380,000 SEEP-B-2310,000 SEEP-B-1350,000 SEEP-A-9510,000 SEEP-A-8140,000 SEEP-A-7220,000 SEEP-A-4160,000 SEEP-A-2240,000 SEEP-A-12120,000 SEEP-A-11540,000 SEEP-A-10530,000 SEEP-B-3-A1460,000 SEEP-B-4430,000 SEEP-A-6140,000 SEEP-A-5180,000 SEEP-A-3220,000 SEEP-A-1230,000 250 0 250125 Feet #* #* #* #* #* #* #* #* #* #* #*#* #* #* #* #*#* #* #* #* #* #* #* #* #* Seep B Seep C Seep D Old Outfall 002 Seep A C a p e F e a r Riv e r W il l is C reek GeorgiaBranchCreekNC Highway 87Onsite Spatial Distribution of Proposed PFAS Signatures Chemours Fayetteville Works, North Carolina Figure A9-11Raleigh ³Path: P:\PRJ\Projects\TR0795\Database and GIS\GIS\Onsite and Offsite Assessment Report\TR0795_OnsiteAnalyteTotTable3_forStatsAnalysis.mxd Last Revised: 10/31/2019 Author: TIpOctober 2019 Projection: NAD 1983 StatePlane North Carolina FIPS 3200 Feet; Units in Foot US 1,000 0 1,000500 Feet Notes:ng/L - nanograms per liter 1. The outline of the River shown on this figure is approximate (River outline based on compilation of open data sources from ArcGIS online service and North Carolina Department of Environmental Quality Online GIS - Major Hydro shapefile).2. Basemap source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community. Legend Concentration (ng/L) < 1,000 1,000 - 10,000 10,000 - 100,000 100,000 - 1,000,000 > 1.000,000 Well Type *Black Creek/Floodplain Deposits (Perched Zone Surficial Proposed PFAS Signature !(Aerial - Predominant PMPA !(Aerial - Mixture of PFAS !(Combined Process Water - Predominant PFMOAA !(Combined Process Water - Mixture of PFAS Observed Seep Nearby Tributary Site Boundary @A@A @A@A @A@A @A@A @A@A @A@A @A@A @A@A @A@A @A@A Sources: Esri, HERE, Garmin, Intermap, increment P Corp., GEBCO, USGS, FAO, NPS, NRCAN, GeoBase, IGN, Kadaster NL, Ordnance Surve y, Esri Japan,METI, Esri China (Hong Kong), (c) OpenStreetMap contributors, and the GIS User Community Selected PFAS Concentrations in Offsite Groundwater Chemours Fayetteville Works, North Carolina Figure A9-12 Legend Raleigh 2 0 21 Miles ³Path: P:\PRJ\Projects\TR0795\Database and GIS\GIS\Onsite and Offsite Assessment Report\TR0795_Offsite_Wells_Top_PFAS.mxd Last Revised: 10/31/2019 Author: jkasunicOctober 2019 Projection: NAD 1983 StatePlane North Carolina FIPS 3200 Feet; Units in Foot US N S W E 6 mi4 mi2 mi Notes:All measurements are in ng/L (nanograms per litre).< - Analyte not detected above associated reporting limit.J - Analyte detected. Reported value may not be accurate or precise.UJ - Analyte not detected. Reporting limit may not be accurate or precise.1. Black lines represent cardinal directions (N, E, S, W)2. Only the six most frequently detected Table 3+ compounds in offsite wells are shown.3. Due to the scale of the map, pairs of wells that are in close proximity have been offset for visibility. Therefore, the placement of these wells on this map do not reflect their true geographic coordinates.4. Date indicated is date of sample collection.5. Table 3+ compounds abbreviations referenced in Table A2-1 of the report.6. "DRY" indicates well was dry at the time of sampling.7. Basemap sources: Esri, HERE, Garmin, Intermap, increment P Corp., GEBCO, USGS, FAO, NPS, NRCAN, GeoBase, IGN, Kadaster NL, Ordnance Survey, Esri Japan, METI, Esri China (Hong Kong), swisstopo, © OpenStreetMap contributors, and the GIS User Community Well Type @A Black Creek Aquifer @A Surficial Aquifer Site Boundary HFPO-DA PFMOAA PFO2HxA PFO3OA PMPA PEPA 140 24 J 87 7.3 370 110 BLADEN-1D 11/7/2019 HFPO-DA PFMOAA PFO2HxA PFO3OA PMPA PEPA <2 <5 <2 <2 <10 <20 BLADEN-2D10/29/2019 HFPO-DA PFMOAA PFO2HxA PFO3OA PMPA PEPA 8.5 B 22 J 31 <2 60 <20 BLADEN-2S10/22/2019 HFPO-DA PFMOAA PFO2HxA PFO3OA PMPA PEPA <2 <5 <2 <2 <10 <20 BLADEN-3D 10/28/2019 HFPO-DA PFMOAA PFO2HxA PFO3OA PMPA PEPA 29 21 59 5.7 93 <20 BLADEN-3S 10/28/2019 HFPO-DA PFMOAA PFO2HxA PFO3OA PMPA PEPA <2 <5 UJ <2 <2 <10 <20 BLADEN-4D 10/25/2019 HFPO-DA PFMOAA PFO2HxA PFO3OA PMPA PEPA 2.7 B <5 UJ 3.1 <2 <10 <20 BLADEN-4S 10/22/2019 HFPO-DA PFMOAA PFO2HxA PFO3OA PMPA PEPA 5 <5 <2 <2 <10 <20 CUMBERLAND-1D 10/24/2019 HFPO-DA PFMOAA PFO2HxA PFO3OA PMPA PEPA <2 <5 UJ 8.5 <2 16 <20 CUMBERLAND-1S 10/24/2019 HFPO-DA PFMOAA PFO2HxA PFO3OA PMPA PEPA <2 <5 <2 <2 <10 <20 CUMBERLAND-2D 10/25/2019 HFPO-DA PFMOAA PFO2HxA PFO3OA PMPA PEPA <86 <210 <81 <58 <570 <47 CUMBERLAND-2S 10/23/2019 HFPO-DA PFMOAA PFO2HxA PFO3OA PMPA PEPA <86 <210 <81 <58 <570 <47 CUMBERLAND-3D10/23/2019 HFPO-DA PFMOAA PFO2HxA PFO3OA PMPA PEPA 16 B 13 J 40 3 61 <20 CUMBERLAND-3S 10/22/2019 HFPO-DA PFMOAA PFO2HxA PFO3OA PMPA PEPA <2 <5 <2 <2 <10 <20 CUMBERLAND-4D 10/24/2019 HFPO-DA PFMOAA PFO2HxA PFO3OA PMPA PEPA 76 15 J 78 J 14 120 J 31 CUMBERLAND-4S 10/25/2019 HFPO-DA PFMOAA PFO2HxA PFO3OA PMPA PEPA <4 UJ <5 <2 <2 <10 <20 CUMBERLAND-5D 9/16/2019 HFPO-DA PFMOAA PFO2HxA PFO3OA PMPA PEPA <86 <210 <81 <58 <570 <47 CUMBERLAND-5S 10/23/2019 HFPO-DA PFMOAA PFO2HxA PFO3OA PMPA PEPA 3.6 B <5 <2 <2 11 <20 ROBESON-1D 10/31/2019 HFPO-DA PFMOAA PFO2HxA PFO3OA PMPA PEPA <2 7.4 4.9 <2 18 <20 ROBESON-1S 10/31/2019 Data/PRJ/Projects/TR0795/Database and GIS/Illustrator/CAP monitoring report/Top PFAS databox gure/TR0795_Osite_Wells_TopPFAS.aiDRY BLADEN-1S 11/7/2019 ") !+! !+! !+! !+! !+! !+! !+! !+! !+! !+! !+! !+! !+! !+! !+! !+! !+! !+! !+! !+! !+! !+! !+! !+! !+! !+!!+! !+! !+! !+! !+! !+! !+! !+! !'A !'A !'A!'A !'A !'A !'A !'A !'A !'A !'A !'A!'A !'A!'A!'A!'A!'A!'A !'A !'A !'A !'A!'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A!'A!'A !'A !'A !'A !'A !'A !'A !'A!'A !'A !'A!'A !'A!'A!'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A!'A!'A!'A!'A!'A !'A !'A !'A !'A !'A!'A!'A !'A !'A!'A !'A !'A!'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A!'A !'A !'A!'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A !'A!'A !'A !'A !'A !'A !'A !'A !'A ")") ")CapeFearRiverDWR Dupont Station BCA-02 BCA-03R NAF-05B NAF-08B NAF-11B PZ-22 SMW-02BSMW-03B SMW-04B SMW-05P SMW-06BSMW-08B Bladen-1D PIW-10DR PIW-1D PIW-3D PIW-4D PIW-5S PIW-6S PIW-7D PIW-9DPIW-9S PW-02 PW-03 PW-05 PW-09 PW-10R PW-12 PW-14 PW-15R BCA-01 BCA-04 FTA-01 FTA-02 FTA-03 INSITU-01 INSITU-02 LTW-01 LTW-02 LTW-03 LTW-04 LTW-05 MW-11 MW-12S MW-13D MW-14D MW-15DRR MW-16DMW-17D MW-18D MW-19D MW-1S MW-20D MW-21D MW-22D MW-23 MW-24 MW-25 MW-26 MW-27 MW-28 MW-2S MW-30MW-7S MW-8S MW-9S NAF-01 NAF-02 NAF-03 NAF-04 NAF-05A NAF-06 NAF-07 NAF-08A NAF-09NAF-10 NAF-11A NAF-12 NAF-13 PZ-11 PZ-12 PZ-13 PZ-14 PZ-15PZ-17 PZ-24 PZ-25 PZ-26 PZ-27 PZ-28 SMW-01 SMW-02SMW-03 SMW-04A SMW-05 SMW-06 SMW-07 SMW-08 SMW-09 SMW-10 SMW-11 SMW-12 Bladen-1S PIW-10S PIW-1S PIW-2D PIW-7S PIW-8D PW-01 PW-04 PW-06 PW-07 PW-11 PW-13 PZ-19R PZ-20RPZ-21R PZ-35 C ED B A C'E'D' B' A' A-1 A-2 GP-103 Onsite Cross-Section Lines Chemours Fayetteville Works, North Carolina Figure A10-1Raleigh 1,000 0 1,000500 Feet ³Path: P:\PRJ\Projects\TR0795\Database and GIS\GIS\Onsite and Offsite Assessment Report\TR0795_OnsiteWellNetwork_withXSec.mxd; TIp; 10/31/2019October 2019 Projection: NAD 1983 StatePlane North Carolina FIPS 3200 Feet; Units in Foot US Notes:1. Due to the scale of the map, pairs of wells that are in close proximity have been offset for visibility. Therefore, the placement of these wells on this map do not reflect their true geographic coordinates.2. The outline of the River shown on this figure is approximate (River outline based on compilation of open data sources from ArcGIS online service and North Carolina Department of Environmental Quality Online GIS - Major Hydro shapefile).3. Basemap source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community. Legend !'A Perched Zone !'A Surficial Aquifer !'A Floodplain Deposits !'A Black Creek Aquifer !+!2019 Installed Wells ")DWR Dupont Station (V42V) Well Cluster ")CPT/DPT Soil Boring Site Boundary Cross-Section 0.5 0 0.50.25 Miles ³ 02? e ro sional surface? ? ? ? ft NAVD88 - feet in 1988 North American Vertical DatumVertical Exaggeration = 15x1. Lithology between borings is interpolated and estimated. 2. Groundwater elevations calculated from measured depth to water on 15 October 2019.3. Cape Fear River water level indicated is median value for 15 October 2019 measured at the W.O. Huske Dam (USGS 2105500). Data obtained from National Water Information System (URL: https://waterdata.usgs.gov/nwis/inventory/?site_no=02105769, date accessed: 2019-09-24).4. Geological Mapping Locations from Figure 6-1. Approximate mapping elevations listed in Table 6-1.5. Seeps observed reported in Seeps and Creeks Investigation Report (Geosyntec, 2019) 011,000 2,000 3,000 4,000 5,000 6,000 Feet A'A West East ??? e ro sionalsurfafafce?? ??? ???? ??? 1,000 2,000 3,000 4,000 5,000 6,000 Feet A'AA MW-17D (100 ft)Notes 00Figure A10-2RaleighOctober 2019 Cross-Section A-A’ Chemours Fayetteville Works, North Carolina Data/PRJ/Projects/TR0795/Database and GIS/Illustrator/Onsite and Offsite Assessment Report/Numeric Modeling cross-sections/TR0795_CrossSectionA_A'.aiLegend Location Name Offset Distance+/- north/south of line Well Screen Fine to Medium Sand Clay Predominantly Fine to Medium-grained Sand Floodplain Deposits Fine to Medium-grained Sand with Variable Silt Content Micaceous Clay Silty or Sandy Claywith Organics 04Geological Mapping Location Corresponds to Section Black Creek Aquifer Groundwater Elevation Perched Zone Groundwater Elevation Surficial Aquifer Groundwater Elevation 110.98 131.95 102.94 93.40 87.38 64.55 35.80 105.71 110.98 102.94 64.55 92.65 SMW-04B (+74 ft)PIW-3D (-118 ft)Geologic Mapping Locations 36, 37, 39 Seeps observed from 65 to 90 ft elevation 03PIW-2D (+142 ft)SMW-03B (+126 ft)SMW-02B (+244 ft)SMW-02 (+245 ft)SMW-03 (+117 ft)BCA-01 (+41 ft)PW-12 (-8 ft)MW-21D (-7 ft)SMW-04A (+75 ft)150 125 100 75 50 25 0Elevation (ft NAVD88)Perched Zone Surficial Aquifer Black Creek Aquifer Upper Cape Fear Confining Unit Black Creek Confining Unit Surficial Aquifer PerchedClay Cape Fear River ! ! ! ! ! ! ! ! !! ! ! ! ! ! ! ! ! ! ! ' ' ' ' ' ' ' ' '' ' ' ' ' ' ' ' ' ' ' A A A A A A A A A A A A A A A A A A A A !'A !'A !'A !'A !'A !'A !! !! !!! !! ! ! !! ! ! !!! !!! ! ! ! ! ! ! ! ! ! '' '' ''' '' ' ' '' ' ' ''' ''' ' ' ' ' ' ' ' ' ' A A AA AAA A A A A A A A A AAAAAA A A A A A A A A A !!! ! !! ! ! ! ! ! ! ! ! !!!!!! ! ! ! ! !!!!!! ! !! ! !! ! ! !! !! !! ! ! ! !! !!!!!! ! !!! !! !!! ''' ' '' ' ' ' ' ' ' ' ' '''''' ' ' ' ' '''''' ' '' ' '' ' ' '' '' '' ' ' ' '' '''''' ' ''' '' ''' AAA A AA A A A AAA A A AAAAAA A A A A AAA AAA A AA A A AA A AA AA AAA A A AA AAAAAA A AAAAAAAA BCA-01 BCA-02 BCA-03R BCA-04 FTA-01 FTA-02 FTA-03 INSITU-01 INSITU-02 LTW-01 LTW-02 LTW-03 LTW-04 LTW-05 MW-12S MW-13D MW-14D MW-15DRR MW-16DMW-17D MW-18D MW-19D MW-1S MW-20D MW-21D MW-22D MW-23 MW-24 MW-25 MW-26 MW-27 MW-28 MW-2S MW-30 MW-7S MW-8S MW-9S NAF-01 NAF-02 NAF-03NAF-04 NAF-05A NAF-05B NAF-06 NAF-07 NAF-08A NAF-08B NAF-09NAF10 NAF-11A NAF-11B NAF-12 NAF-13PZ-11 PZ-12 PZ-13 PZ-14 PZ-15 PZ-19R PZ-20RPZ-21R PZ-22 PZ-24 PZ-25 PZ-26PZ-27PZ-28 PZ-35 SMW-02SMW-02B SMW-03 SMW-03BSMW-04A SMW-04B SMW-05 SMW-05P SMW-06 SMW-06B SMW-07 SMW-08SMW-08B SMW-09 SMW-12 PIW-1D PIW-1S PIW-2D PIW-3D PIW-5S PIW-6S PIW-4D PIW-10DR PIW-10S PIW-7D PIW-8D PIW-7S PIW-9SPIW-9D PW-01 PW-02 PW-03 PW-04 PW-05 PW-10 PW-12 PW-13 PW-14 PW-15 Cape Fear RiverA A' 1,000 0 1,000500 Feet ³ E-E' E-E'")") ") A-1 A-2 GP-103PZ-17 MW-11 02ft NAVD88 - feet in 1988 North American Vertical DatumVertical Exaggeration = 15x1. Lithology between borings is interpolated and estimated. 2. Groundwater elevations calculated from measured depth to water on 15 October 2019.3. Cape Fear River water level indicated is median value for 15 October 2019 measured at the W.O. Huske Dam (USGS 2105500). Data obtained from National Water Information System (URL: https://waterdata.usgs.gov/nwis/inventory/?site_no=02105769, date accessed: 2019-09-24).4. Geological Mapping Locations from Figure 6-1. Approximate mapping elevations listed in Table 6-1.5. Seeps observed reported in Seeps and Creeks Investigation Report (Geosyntec, 2019) ft NAVD88 - feet in 1988 North American Vertical DatumVertical Exaggeration = 15x 01150 125 100 75 50 25 0 1,000 2,000 3,000 4,000 5,000Elevation (ft NAVD88)Feet B B ' West East Notes e ro sional surfaceMW-17D (100 ft)00Figure Raleigh October 2019 Cross-Section B-B’ Chemours Fayetteville Works, North Carolina Legend Data/PRJ/Projects/TR0795/Database and GIS/Illustrator/Onsite and Offsite Assessment Report/Numeric Modeling cross-sections/TR0795_CrossSectionB_B'.aiFine to Medium Sand Clay Predominantly Fine to Medium-grained Sand Floodplain Deposits Fine to Medium-grained Sand with Variable Silt Content Micaceous Clay Silty or Sandy Claywith Organics A10-3 Location Name Offset Distance+/- north/south of line Well Screen NAF-11A (+103 ft)NAF-11B (+105 ft)MW-22D (-27 ft)LTW-02HP-22 (90 ft)03PIW-4DHP-21 PW-15R (+77 ft)BCA-03R (-77 ft)PZ-11 (-43 ft)MW-15DRR (-78 ft)NAF-02 (-107 ft)NAF-03 (-200 ft)NAF-07 (+131 ft)NAF-06 (+13 ft)MW-17D (-45 ft)MW-16D (-56 ft)Perched Zone Surficial Aquifer Upper Cape Fear Confining Unit Black Creek Confining Unit Black Creek Aquifer Surficial Aquifer Power Area LinedSediment Basin Chemours MonomersIX M Area K uraray Butacite ® Leased Area; K uraray SentryGlas ® Leased Area Seeps observed Tributary to Seep A ? ?Perched Clay (97 ft)? ? Cape FearRiver? ?04Seeps observed Seeps observed Geologic Mapping Location 34 Geologic Mapping Location 32/33 Geologic Mapping Location 29/31 Geological Mapping Location Corresponds to Section Black Creek Aquifer Groundwater Elevation Perched Zone Groundwater Elevation Surficial Aquifer Groundwater Elevation 110.98 102.94 64.55 139.43 138.92 134.48 130.58 137.02 117.09 103.37 94.24 113.02113.82 101.27 76.96 42.1941.68 ! ! ! ! ! ! ! ! !! ! ! ! ! ! ! ! ! ! ! ' ' ' ' ' ' ' ' '' ' ' ' ' ' ' ' ' ' ' A A A A A A A A A A A A A A A A A A A A !'A !'A !'A !'A !'A !'A !! !! !!! !! ! ! !! ! ! !!! !!! ! ! ! ! ! ! ! ! ! '' '' ''' '' ' ' '' ' ' ''' ''' ' ' ' ' ' ' ' ' ' A A AA AAA A A A A A A A A AAAAAA A A A A A A A A A !!! ! !! ! ! ! ! ! ! ! ! !!!!!! ! ! ! ! !!!!!! ! !! ! !! ! ! !! !! !! ! ! ! !! !!!!!! ! !!! !! !!! ''' ' '' ' ' ' ' ' ' ' ' '''''' ' ' ' ' '''''' ' '' ' '' ' ' '' '' '' ' ' ' '' '''''' ' ''' '' ''' AAA A AA A A A AAA A A AAAAAA A A A A AAA AAA A AA A A AA A AA AA AAA A A AA AAAAAA A AAAAAAAA BCA-01 BCA-02 BCA-03R BCA-04 FTA-01 FTA-02 FTA-03 INSITU-01 INSITU-02 LTW-01 LTW-02 LTW-03 LTW-04 LTW-05 MW-12S MW-13D MW-14D MW-15DRR MW-16DMW-17D MW-18D MW-19D MW-1S MW-20D MW-21D MW-22D MW-23 MW-24 MW-25 MW-26 MW-27 MW-28 MW-2S MW-30 MW-7S MW-8S MW-9S NAF-01 NAF-02 NAF-03NAF-04 NAF-05A NAF-05B NAF-06 NAF-07 NAF-08A NAF-08B NAF-09NAF10 NAF-11A NAF-11B NAF-12 NAF-13PZ-11 PZ-12 PZ-13 PZ-14 PZ-15 PZ-19R PZ-20RPZ-21R PZ-22 PZ-24 PZ-25 PZ-26PZ-27PZ-28 PZ-35 SMW-02SMW-02B SMW-03 SMW-03BSMW-04A SMW-04B SMW-05 SMW-05P SMW-06 SMW-06B SMW-07 SMW-08SMW-08B SMW-09 SMW-12 PIW-1D PIW-1S PIW-2D PIW-3D PIW-5S PIW-6S PIW-4D PIW-10DR PIW-10S PIW-7D PIW-8D PIW-7S PIW-9SPIW-9D PW-01 PW-02 PW-03 PW-04 PW-05 PW-10 PW-12 PW-13 PW-14 PW-15 Cape Fear RiverB B' 1,000 0 1,000500 Feet ³ E-E' E-E' ")") ") A-1 A-2 GP-103PZ-17 MW-11 02erosional surfaceft NAVD88 - feet in 1988 North American Vertical DatumVertical Exaggeration = 15x1. Lithology between borings is interpolated and estimated. 2. Groundwater elevations calculated from measured depth to water on 15 October 2019.3. Cape Fear River water level indicated is median value for 15 October 2019 measured at the W.O. Huske Dam (USGS 2105500). Data obtained from National Water Information System (URL: https://waterdata.usgs.gov/nwis/inventory/?site_no=02105769, date accessed: 2019-09-24).4. Geological Mapping Locations from Figure 6-1. Approximate mapping elevations listed in Table 6-1.5. Seeps observed reported in Seeps and Creeks Investigation Report (Geosyntec, 2019) erosionalsurfafafce011,000 2,000 3,000 4,000 5,000Feet C ' West East 150 140 130 120 110 100 90 80 70 60 50 40 30 20 10 0 -10Elevation (ft NAVD88)C Notes MW-17D (100 ft)00Figure A10-4RaleighOctober 2019 Cross-Section C-C’ Chemours Fayetteville Works, North Carolina Data/PRJ/Projects/TR0795/Database and GIS/Illustrator/Onsite and Offsite Assessment Report/Numeric Modeling cross-sections/TR0795_CrossSectionC_C'.aiLegend Fine to Medium Sand Clay Floodplain Deposits Fine to Medium-grained Sand with Variable Silt Content Micaceous Clay Silty or Sandy Claywith Organics Predominantly Fine to Medium-grained Sand with some Clay Location Name Offset Distance+/- north/south of line Well Screen PW-14 (+114 ft)MW-30 (+134 ft)PW-03 (+134 ft)C-103H-9PZ-22 (-52 ft)LTW-04 (-45 ft)MW-1S (-17 ft)MW-24/C-2 (+64 ft)PW-13 (+27 ft)PZ-18 (+55 ft)MW-14D (-126 ftMW-12S (+146 ft)MW-12D (+147 ft)MW-02S (-175 ft)MW-13D (-24 ft)? Wastewater Treatment Plant Perched Zone Surficial Aquifer Perched Clay Surficial Aquifer Black Creek Confining Unit Upper Cape Fear Confining Unit Black Creek Aquifer ?04Seeps observed Geologic Location 26 Geologic Location 27/28 Cape FearRiver Seep B flowing downhill Tributary toSeep B Seeps observed Geological Mapping Location Corresponds to Section Black Creek Aquifer Groundwater Elevation Perched Zone Groundwater Elevation Surficial Aquifer Groundwater Elevation 110.98 102.94 64.55 76.96 130.69 131.61 133.01 109.67 104.33 105.57 86.86 44.0642.55 CPT Boring ! ! ! ! ! ! ! ! !! ! ! ! ! ! ! ! ! ! ! ' ' ' ' ' ' ' ' '' ' ' ' ' ' ' ' ' ' ' A A A A A A A A A A A A A A A A A A A A !'A !'A !'A !'A !'A !'A !! !! !!! !! ! ! !! ! ! !!! !!! ! ! ! ! ! ! ! ! ! '' '' ''' '' ' ' '' ' ' ''' ''' ' ' ' ' ' ' ' ' ' A A AA AAA A A A A A A A A AAAAAA A A A A A A A A A !!! ! !! ! ! ! ! ! ! ! ! !!!!!! ! ! ! ! !!!!!! ! !! ! !! ! ! !! !! !! ! ! ! !! !!!!!! ! !!! !! !!! ''' ' '' ' ' ' ' ' ' ' ' '''''' ' ' ' ' '''''' ' '' ' '' ' ' '' '' '' ' ' ' '' '''''' ' ''' '' ''' AAA A AA A A A AAA A A AAAAAA A A A A AAA AAA A AA A A AA A AA AA AAA A A AA AAAAAA A AAAAAAAA BCA-01 BCA-02 BCA-03R BCA-04 FTA-01 FTA-02 FTA-03 INSITU-01 INSITU-02 LTW-01 LTW-02 LTW-03 LTW-04 LTW-05 MW-12S MW-13D MW-14D MW-15DRR MW-16DMW-17D MW-18D MW-19D MW-1S MW-20D MW-21D MW-22D MW-23 MW-24 MW-25 MW-27 MW-28 MW-2S MW-30 MW-7S MW-8S MW-9S NAF-01 NAF-02 NAF-03NAF-04 NAF-05A NAF-05B NAF-06 NAF-07 NAF-08A NAF-08B NAF-09NAF10 NAF-11A NAF-11B NAF-12 NAF-13PZ-11 PZ-12 PZ-13 PZ-14 PZ-15 PZ-19R PZ-20RPZ-21R PZ-22 PZ-24 PZ-25 PZ-26PZ-27PZ-28 PZ-35 SMW-02SMW-02B SMW-03 SMW-03BSMW-04A SMW-04B SMW-05 SMW-05P SMW-06 SMW-06B SMW-07 SMW-08SMW-08B SMW-09 SMW-12 PIW-1D PIW-1S PIW-2D PIW-3D PIW-5S PIW-6S PIW-4D PIW-10DR PIW-10S PIW-7D PIW-8D PIW-7S PIW-9SPIW-9D PW-01 PW-02 PW-03 PW-04 PW-05 PW-10 PW-12 PW-13 PW-14 PW-15 Cape Fear River1,000 0 1,000500 Feet ³ C C' MW-26 E-E' ")") ") A-1 A-2 GP-103PZ-17 MW-11 E-E' 02?erosional surface? ft NAVD88 - feet in 1988 North American Vertical DatumVertical Exaggeration = 15x1. Lithology between borings is interpolated and estimated. 2. Groundwater elevations calculated from measured depth to water on 15 October 2019.3. Cape Fear River water level indicated is median value for 15 October 2019 measured at the W.O. Huske Dam (USGS 2105500). Data obtained from National Water Information System (URL: https://waterdata.usgs.gov/nwis/inventory/?site_no=02105769, date accessed: 2019-09-24).4. Geological Mapping Locations from Figure 6-1. Approximate mapping elevations listed in Table 6-1.5. Seeps observed reported in Seeps and Creeks Investigation Report (Geosyntec, 2019) ??erosionalsurfafafce??? ft NAVD88 - feet in 1988 North American Vertical DatumVertical Exaggeration = 15x1. Lithology between borings is interpolated and estimated. 2. Groundwater elevations calculated from measured depth to water on 15 October 2019.01150 125 100 75 50 25 0 1,000 2,000 3,000 4,000 5,000Elevation (ft NAVD88)Feet D D' West East Notes MW-17D (100 ft)00Figure Raleigh October 2019 Cross-Section D-D’ Chemours Fayetteville Works, North Carolina Data/PRJ/Projects/TR0795/Database and GIS/Illustrator/Onsite and Offsite Assessment Report/Numeric Modeling cross-sections/TR0795_CrossSectionD_D'.aiA10- Legend Fine to Medium Sand Clay Floodplain Deposits Fine to Medium-grained Sand with Variable Silt Content Micaceous Clay Silty or Sandy Claywith Organics Predominantly Fine to Medium-grained Sand with some Clay Location Name Offset Distance+/- north/south of line Well Screen MW-26 (+22 ft)PZ-16 (-19 ft)PW-05 (-3 ft)A-1 (+89 ft)A-2 (+100 ft)GP-104 (+450 ft)03LTW-05 (+60 ft)PIW-9S (-172 ft)PIW-9D (-164 ft)PIW-8D (+38 ft)BCA-04 (-7 ft)PZ-24 (-50 ft)BCA-02 (-42 ft)Perched Zone Upper Cape Fear Confining Unit Black Creek Confining Unit Surficial Aquifer Black Creek Aquifer ? ? ?? ? ? Outfall 002 DuPont polyvinyl fluoride (PVF) Leased Area ? Cape FearRiverPZ-26 (-71 ft)Perched Clay ? ? ? ? ?04Seeps observed Old Outfall 002 Seep C CPT Boring Soil BoringCorresponds to Section Black Creek Aquifer Groundwater Elevation Perched Zone Groundwater Elevation Surficial Aquifer Groundwater Elevation 110.98 102.94 64.55 121.25 49.06 42.08 42.3541.11 134.80 133.36 135.99 121.55 74.55 ! ! ! ! ! ! ! ! !! ! ! ! ! ! ! ! ! ! ! ' ' ' ' ' ' ' ' '' ' ' ' ' ' ' ' ' ' ' A A A A A A A A A A A A A A A A A A A A !'A !'A !'A !'A !'A !'A !! !! !!! !! ! ! !! ! ! !!! !!! ! ! ! ! ! ! ! ! ! '' '' ''' '' ' ' '' ' ' ''' ''' ' ' ' ' ' ' ' ' ' A A AA AAA A A A A A A A A AAAAAA A A A A A A A A A !!! ! !! ! ! ! ! ! ! ! ! !!!!!! ! ! ! ! !!!!!! ! !! ! !! ! ! !! !! !! ! ! ! !! !!!!!! ! !!! !! !!! ''' ' '' ' ' ' ' ' ' ' ' '''''' ' ' ' ' '''''' ' '' ' '' ' ' '' '' '' ' ' ' '' '''''' ' ''' '' ''' AAA A AA A A A AAA A A AAAAAA A A A A AAA AAA A AA A A AA A AA AA AAA A A AA AAAAAA A AAAAAAAA BCA-01 BCA-02 BCA-03R BCA-04 FTA-01 FTA-02 FTA-03 INSITU-01 INSITU-02 LTW-01 LTW-02 LTW-03 LTW-04 LTW-05MW-11 MW-12S MW-13D MW-14D MW-15DRR MW-16DMW-17D MW-18D MW-19D MW-1S MW-20D MW-21D MW-22D MW-23 MW-24 MW-25 MW-26 MW-27 MW-28 MW-2S MW-30 MW-7S MW-8S MW-9S NAF-01 NAF-02 NAF-03NAF-04 NAF-05A NAF-05B NAF-06 NAF-07 NAF-08A NAF-08B NAF-09NAF10 NAF-11A NAF-11B NAF-12 NAF-13PZ-11 PZ-12 PZ-13 PZ-14 PZ-15 PZ-17 PZ-19R PZ-20RPZ-21R PZ-22 PZ-24 PZ-25 PZ-26PZ-27PZ-28 PZ-35 SMW-02SMW-02B SMW-03 SMW-03BSMW-04A SMW-04B SMW-05 SMW-05P SMW-06 SMW-06B SMW-07 SMW-08SMW-08B SMW-09 SMW-12 PIW-1D PIW-1S PIW-2D PIW-3D PIW-5S PIW-6S PIW-4D PIW-10DR PIW-10S PIW-7D PIW-8D PIW-7S PIW-9SPIW-9D PW-01 PW-02 PW-03 PW-04 PW-05 PW-10 PW-12 PW-13 PW-14 PW-15 Cape Fear River1,000 0 1,000500 Feet ³ D D' E-E' E-E' ")") ") A-1 A-2 GP-103 02ft NAVD88 - feet in 1988 North American Vertical DatumVertical Exaggeration = 15xSeep A bottom is approximate1. Lithology between borings is interpolated and estimated. 2. Groundwater elevations calculated from measured depth to water on 15 October 2019.3. Cape Fear River water level indicated is median value for 15 October 2019 measured at the W.O. Huske Dam (USGS 2105500). Data obtained from National Water Information System (URL: https://waterdata.usgs.gov/nwis/inventory/?site_no=02105769, date accessed: 2019-09-24).4. Geological Mapping Locations from Figure 6-1. Approximate mapping elevations listed in Table 6-1.5. Seeps observed reported in Seeps and Creeks Investigation Report (Geosyntec, 2019) 011,000 2,000 3,000 4,000 5,000 Feet E E' So u th N o r th 150 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 -10Elevation (ft NAVD88)Notes MW-17D (100 ft)00Figure Raleigh October 2019 Cross-Section E-E’ Chemours Fayetteville Works, North Carolina Data/PRJ/Projects/TR0795/Database and GIS/Illustrator/Onsite and Offsite Assessment Report/Numeric Modeling cross-sections/TR0795_CrossSectionE_E'.aiA10- Legend Fine to Medium Sand Clay Floodplain Deposits Fine to Medium-grained Sand with Variable Silt Content Micaceous Clay Silty or Sandy Claywith Organics Predominantly Fine to Medium-grained Sand with some Clay Location Name Offset Distance+/- east/west of line Well Screen PW-14 (-24 ft)PW-03 (+28 ft)MW-30 (-17 ft)PZ-14 (-171 ft)PZ-13 (+199 ft)NAF-08A (+80 ft)NAF-08B (+74 ft)NAF-12 (-34 ft)NAF-04 (-99 ft)NAF-03 (-67 ft)NAF-02 (-184 ft)NAF-06 (+82 ft)PW-15R (+174 ft)NAF-11A (+166)NAF-11B (+162)03BCA-01 (+59 ft)PW-02 (+47 ft)SMW-02 (-14 ft)SMW-02B (-19 ft)SMW-12 (+31 ft)DuPont polyvinyl fluoride (PVF) Leased Area PZ-16 (+82 ft)BCA-02 (+84 ft)MW-23 (+84 ft)PZ-25 (+98 ft)MW-25 (+97 ft)Chemours MonomersIX M Area Perched Zone Perched Clay Surficial Aquifer Black Creek Confining Unit Black Creek Aquifer Upper Cape Fear Confining Unit ? ? ?? ? ?04Seep A Corresponds to Section Black Creek Aquifer Groundwater Elevation Perched Zone Groundwater Elevation Surficial Aquifer Groundwater Elevation 110.98 102.94 74.55 133.93 133.29 133.01 132.12 136.73 138.54 135.05 139.99 139.43 134.48 130.58 131.95 105.57 95.99 94.24 90.05 126.24 64.55 76.96 87.38 33.44 86.86 ! ! ! ! ! ! ! ! !! ! ! ! ! ! ! ! ! ! ! ' ' ' ' ' ' ' ' '' ' ' ' ' ' ' ' ' ' ' A A A A A A A A A A A A A A A A A A A A !'A !'A !'A !'A !'A !'A !! !! !!! !! ! ! !! ! ! !!! !!! ! ! ! ! ! ! ! ! ! '' '' ''' '' ' ' '' ' ' ''' ''' ' ' ' ' ' ' ' ' ' A A AA AAA A A A A A A A A AAAAAA A A A A A A A A A !!! ! !! ! ! ! ! ! ! ! ! !!!!!! ! ! ! ! !!!!!! ! !! ! !! ! ! !! !! !! ! ! ! !! !!!!!! ! !!! !! !!! ''' ' '' ' ' ' ' ' ' ' ' '''''' ' ' ' ' '''''' ' '' ' '' ' ' '' '' '' ' ' ' '' '''''' ' ''' '' ''' AAA A AA A A A AAA A A AAAAAA A A A A AAA AAA A AA A A AA A AA AA AAA A A AA AAAAAA A AAAAAAAA BCA-01 BCA-02 BCA-03R BCA-04 FTA-01 FTA-02 FTA-03 INSITU-01 INSITU-02 LTW-01 LTW-02 LTW-03 LTW-04 LTW-05 MW-12S MW-13D MW-14D MW-15DRR MW-16DMW-17D MW-18D MW-19D MW-1S MW-20D MW-21D MW-22D MW-23 MW-24 MW-25 MW-26 MW-27 MW-28 MW-2S MW-30 MW-7S MW-8S MW-9S NAF-01 NAF-02 NAF-03NAF-04 NAF-05A NAF-05B NAF-06 NAF-07 NAF-08A NAF-08B NAF-09NAF10 NAF-11A NAF-11B NAF-12 NAF-13PZ-11 PZ-12 PZ-13 PZ-14 PZ-15 PZ-19R PZ-20RPZ-21R PZ-22 PZ-24 PZ-25 PZ-26PZ-27PZ-28 PZ-35 SMW-02SMW-02B SMW-03 SMW-03BSMW-04A SMW-04B SMW-05 SMW-05P SMW-06 SMW-06B SMW-07 SMW-08SMW-08B SMW-09 SMW-12 PIW-1D PIW-1S PIW-2D PIW-3D PIW-5S PIW-6S PIW-4D PIW-10DR PIW-10S PIW-7D PIW-8D PIW-7S PIW-9SPIW-9D PW-01 PW-02 PW-03 PW-04 PW-05 PW-10 PW-12 PW-13 PW-14 PW-15 Cape Fear RiverEE'1,000 0 1,000500 Feet ³ D-D'C -C 'B -B 'A-A' A-A' ")") ") A-1 A-2 GP-103PZ-17 MW-11 RainRain Cape Fe ar Ri v er Cape Fe ar Ri v er Perched Zo n e Surficial Aqu i f e r Black Cree k Aquifer Ground w a t e r ChemoursFayetteville WorksManufacturing Area ChemoursFayetteville WorksManufacturing Area Perched Zone Clay Black CreekConfining Unit Perched Zone Clay Black CreekConfining Unit Non-contact cooling water from riverNon-Chemours treated process waterStormwater (4) Outfall 002 (Pipe to River) Groundwater Seep B Seep A Seep C Seep D (1) UpstreamCape Fear River (3) Aerial Deposition (9) Georgia Branch Creek (2) Willis Creek ( 7 ) Old Outfall 0 02(6) Seeps ( 5) O nSite Groundwater (8) Adjacentand Downstream (3) Aerial Deposition (9) Georgia Branch Creek (2) Willis Creek ( 7 ) Old Outfall 0 02(6) Seeps ( 5) O nSite Groundwater ( 8 ) A dja cent and W.O. Huske DamW.O. Huske Dam Upper Cape Fear Confining Unit(4) Outfall 002 (Pipe to River) (1) UpstreamCape Fear River Downstre a m Groundwater ( 8 ) A dja cent and Downstre a m Groundwater Groundwater (8) Adjacentand Downstream Raleigh, NC September 2019 Figure A10-7 Potential PFAS Pathways to the Cape Fear River from Site Chemours Fayetteville Works, North Carolina TR0795 DATA REVIEW NARRATIVES AND LABORATORY REPORTS DATA REVIEW NARRATIVES AND LABORATORY REPORTS Data review narratives are included in this appendix. Due to file size limits, analytical laboratory reports will be provided separately with the hard copy of the report. All analytical data were reviewed using the Data Verification Module (DVM) within the LocusTM Environmental Information Management (EIM) system, which is a commercial software program used to manage data. Following the DVM process, a manual review of the data was conducted. The DVM and the manual review results were combined in a data review narrative report for each set of sample results, which were consistent with Stage 2b of the EPA Guidance for Labeling Externally Validated Laboratory Analytical Data for Superfund Use (EPA-540-R-08-005 2009). The narrative report summarizes which samples were qualified (if any), the specific reasons for the qualification, and any potential bias in reported results. The data usability, in view of the project’s data quality objectives (DQOs), was assessed and the data were entered into the EIM system. The data were evaluated by the DVM against the following data usability checks: Hold time criteria; Field and laboratory blank contamination; Completeness of QA/QC samples; MS/MSD recoveries and the relative percent differences (RPDs) between these spikes; Laboratory control sample/control sample duplicate recoveries and the RPD between these spikes; Surrogate spike recoveries for organic analyses; and RPD between field duplicate sample pairs. ADQM DATA REVIEW NARRATIVE Site Chemours FAY – Fayetteville Project GW Sampling 4Q19 Project Reviewer Michael Aucoin, AECOM as a Chemours contractor Sampling Dates October 18, 22 – 25, and 28 – 31, 2019 November 1, 4 – 8, 2019 Analytical Protocol Laboratory Analytical Method Parameter(s) TestAmerica - Sacramento Cl. Spec. Table 3 Compound SOP Table 3+ compounds incl HFPO-DA Sample Receipt The following items are noted for this data set: • All samples were received in satisfactory condition and within EPA temperature guidelines on: October 25, 29, and 31, 2019 November 1, 8, and 12, 2019 Data Review The electronic data submitted for this project was reviewed via the Data Verification Module (DVM) process. Overall the data is acceptable for use without qualification, except as noted below: • HFPO-DA results in some groundwater samples were qualified B and the reported results may be biased high, or false positives, due to a comparable concentration found in the associated equipment blank. • Several analytical results have been qualified J as estimated, and non-detect results qualified UJ indicating an estimated reporting limit, due to a poor lab control or matrix spike recovery; and poor lab replicate precision. See the Data Verification Module (DVM) Narrative Report for which samples were qualified, the specific reasons for qualification, and potential bias in reported results. Attachments The DVM Narrative report is attached. The lab reports due to a large page count are stored on an AECOM network shared drive and are available to be posted on external shared drives, or on a flash drive. Data Verification Module (DVM) The DVM is an internal review process used by the ADQM group to assist with the determination of data usability. The electronic data deliverables received from the laboratory are loaded into the Locus EIM™ database and processed through a series of data quality checks, which are a combination of software (Locus EIM™ database Data Verification Module (DVM)) and manual reviewer evaluations. The data is evaluated against the following data usability checks: • Field and laboratory blank contamination • US EPA hold time criteria • Missing Quality Control (QC) samples • Matrix spike(MS)/matrix spike duplicate (MSD) recoveries and the relative percent differences (RPDs) between these spikes • Laboratory control sample(LCS)/control sample duplicate (LCSD) recoveries and the RPD between these spikes • Surrogate spike recoveries for organic analyses • RPD between field duplicate sample pairs • RPD between laboratory replicates for inorganic analyses • Difference / percent difference between total and dissolved sample pairs. There are two qualifier fields in EIM: Lab Qualifier is the qualifier assigned by the lab and may not reflect the usability of the data. This qualifier may have many different meanings and can vary between labs and over time within the same lab. Please refer to the laboratory report for a description of the lab qualifiers. As they are lab descriptors they are not to be used when evaluating the data. Validation Qualifier is the 3rd party formal validation qualifier if this was performed. Otherwise this field contains the qualifier resulting from the ADQM DVM review process. This qualifier assesses the usability of the data and may not equal the lab qualifier. The DVM applies the following data evaluation qualifiers to analysis results, as warranted: Qualifier Definition B Not detected substantially above the level reported in the laboratory or field blanks. R Unusable result. Analyte may or may not be present in the sample. J Analyte present. Reported value may not be accurate or precise. UJ Not detected. Reporting limit may not be accurate or precise. The Validation Status Code field is set to “DVM” if the ADQM DVM process has been performed. If the DVM has not been run, the field will be blank. If the DVM has been run (Validation Status Code equals “DVM”), use the Validation Qualifier. DVM Narrative ReportContamination detected in equipment blank(s). Sample result does not differ significantly from the analyte concentration detected in the associatedequipment blank(s).LABSTATSValidation Options:Validation ReasonFayettevilleSite:Sampling Program:GW Sampling 4Q19AnalyticalMethodAnalyteDateSampledPQLValidationQualifierLab Sample IDPre-prepMDLResult TypeField Sample IDPrepUnitsGW4Q19-BLADEN-2S-10221910/22/2019 320-55686-4Hfpo Dimer Acid0.0085 UG/LCl. Spec. Table 3Compound SOPBPFAS_DI_Prep0.0020PQLGW4Q19-BLADEN-2S-10221910/22/2019 320-55686-4Hfpo Dimer Acid (trial)0.0076 UG/LCl. Spec. Table 3Compound SOPBPFAS_DI_Prep0.0020PQLGW4Q19-BLADEN-4S-10221910/22/2019 320-55686-6Hfpo Dimer Acid (trial)0.0027 UG/LCl. Spec. Table 3Compound SOPBPFAS_DI_Prep0.0020PQLGW4Q19-BLADEN-4S-10221910/22/2019 320-55686-6Hfpo Dimer Acid0.0027 UG/LCl. Spec. Table 3Compound SOPBPFAS_DI_Prep0.0020PQLGW4Q19-CUMBERLAND-3S-10221910/22/2019 320-55686-5Hfpo Dimer Acid (trial)0.017 UG/LCl. Spec. Table 3Compound SOPBPFAS_DI_Prep0.0020PQLGW4Q19-PIW-4D-103119-Dup10/31/2019 320-55909-2Hfpo Dimer Acid0.0029 UG/LCl. Spec. Table 3Compound SOPBPFAS_DI_Prep0.0020PQLGW4Q19-PIW-4D-103119-Dup10/31/2019 320-55909-2Hfpo Dimer Acid (trial)0.0033 UG/LCl. Spec. Table 3Compound SOPBPFAS_DI_Prep0.0020PQLGW4Q19-PIW-4D-103119 10/31/2019 320-55909-1Hfpo Dimer Acid0.0036 UG/LCl. Spec. Table 3Compound SOPBPFAS_DI_Prep0.0020PQLGW4Q19-PIW-4D-103119 10/31/2019 320-55909-1Hfpo Dimer Acid (trial)0.0023 UG/LCl. Spec. Table 3Compound SOPBPFAS_DI_Prep0.0020PQLGW4Q19-CUMBERLAND-3S-10221910/22/2019 320-55686-5Hfpo Dimer Acid0.016 UG/LCl. Spec. Table 3Compound SOPBPFAS_DI_Prep0.0020PQLGW4Q19-ROBESON-1D-10311910/31/2019 320-55909-3Hfpo Dimer Acid0.0036 UG/LCl. Spec. Table 3Compound SOPBPFAS_DI_Prep0.0020PQLGW4Q19-ROBESON-1D-10311910/31/2019 320-55909-3Hfpo Dimer Acid (trial)0.0038 UG/LCl. Spec. Table 3Compound SOPBPFAS_DI_Prep0.0020PQLPage 1 of 8 Associated MS and/or MSD analysis had relative percent recovery (RPR) values less than the lower control limit. The actual detection limits may behigher than reported.LABSTATSValidation Options:Validation ReasonFayettevilleSite:Sampling Program:GW Sampling 4Q19AnalyticalMethodAnalyteDateSampledPQLValidationQualifierLab Sample IDPre-prepMDLResult TypeField Sample IDPrepUnitsGW4Q19-PIW-4D-103119 10/31/2019 320-55909-1R-EVE0.0020 UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLGW4Q19-PIW-4D-103119 10/31/2019 320-55909-1R-EVE0.0020 UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLGW4Q19-PW-05-103019 10/30/2019 320-55860-3PFO5DA0.0020 ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLGW4Q19-PW-05-103019 10/30/2019 320-55860-3PFO5DA0.0020 ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLGW4Q19-PW-06-102919 10/29/2019 320-55854-1PFO5DA0.0020 ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLGW4Q19-PW-06-102919 10/29/2019 320-55854-1PFO5DA0.0020 ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLGW4Q19-PIW-4D-103119-Dup10/31/2019 320-55909-2R-EVE0.0020 UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLGW4Q19-PIW-4D-103119-Dup10/31/2019 320-55909-2R-EVE0.0020 UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLGW4Q19-EQBLK-01-11011911/01/2019 320-56112-2PFO5DA0.0020 ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLGW4Q19-EQBLK-01-11011911/01/2019 320-56112-2PFO5DA0.0020 ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLGW4Q19-FBLK-01-102919 10/29/2019 320-55854-6PFO5DA0.0020 ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLGW4Q19-FBLK-01-102919 10/29/2019 320-55854-6PFO5DA0.0020 ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLGW4Q19-FBLK-01-110119 11/01/2019 320-56112-1PFO5DA0.0020 ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLGW4Q19-FBLK-01-110119 11/01/2019 320-56112-1PFO5DA0.0020 ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLGW4Q19-FBLK-01-110419 11/04/2019 320-56112-6Hfpo Dimer Acid0.0020 UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLGW4Q19-BLADEN-4S-10221910/22/2019 320-55686-6PFMOAA0.0050 ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0050PQLPage 2 of 8 Associated MS and/or MSD analysis had relative percent recovery (RPR) values less than the lower control limit. The actual detection limits may behigher than reported.LABSTATSValidation Options:Validation ReasonFayettevilleSite:Sampling Program:GW Sampling 4Q19AnalyticalMethodAnalyteDateSampledPQLValidationQualifierLab Sample IDPre-prepMDLResult TypeField Sample IDPrepUnitsGW4Q19-BLADEN-4S-10221910/22/2019 320-55686-6PFMOAA0.0050 ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0050PQLGW4Q19-CUMBERLAND-1S-10241910/24/2019 320-55761-3PFMOAA0.0050 ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0050PQLGW4Q19-CUMBERLAND-1S-10241910/24/2019 320-55761-3PFMOAA0.0050 ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0050PQLGW4Q19-CUMBERLAND-1D-10241910/24/2019 320-55761-1R-EVE0.0020 UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLGW4Q19-CUMBERLAND-1D-10241910/24/2019 320-55761-1R-EVE0.0020 UG/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLGW4Q19-BLADEN-4D-10251910/25/2019 320-55754-1PFMOAA0.0050 ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0050PQLGW4Q19-BLADEN-4D-10251910/25/2019 320-55754-1PFMOAA0.0050 ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0050PQLGW4Q19-Bladen-2D-10291910/29/2019 320-55854-5PFO5DA0.0020 ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLGW4Q19-Bladen-2D-10291910/29/2019 320-55854-5PFO5DA0.0020 ug/LCl. Spec. Table 3Compound SOPUJPFAS_DI_Prep0.0020PQLPage 3 of 8 Associated LCS and/or LCSD analysis had relative percent recovery (RPR) values higher than the upper control limit. The reported result may bebiased high.LABSTATSValidation Options:Validation ReasonFayettevilleSite:Sampling Program:GW Sampling 4Q19AnalyticalMethodAnalyteDateSampledPQLValidationQualifierLab Sample IDPre-prepMDLResult TypeField Sample IDPrepUnitsGW4Q19-CUMBERLAND-1D-10241910/24/2019 320-55761-1Byproduct 50.0025 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLGW4Q19-CUMBERLAND-1D-10241910/24/2019 320-55761-1Byproduct 50.0025 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLGW4Q19-CUMBERLAND-1D-102419-D10/24/2019 320-55761-2Byproduct 50.0024 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLGW4Q19-CUMBERLAND-1D-102419-D10/24/2019 320-55761-2Byproduct 50.0024 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLGW4Q19-PW-01-101819 10/18/2019 320-55686-1Byproduct 50.70 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.012PQLGW4Q19-PW-01-101819 10/18/2019 320-55686-1Byproduct 50.66 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.012PQLPage 4 of 8 Associated MS and/or MSD analysis had relative percent recovery (RPR) values higher than the upper control limit. The reported result may be biasedhigh.LABSTATSValidation Options:Validation ReasonFayettevilleSite:Sampling Program:GW Sampling 4Q19AnalyticalMethodAnalyteDateSampledPQLValidationQualifierLab Sample IDPre-prepMDLResult TypeField Sample IDPrepUnitsGW4Q19-CUMBERLAND-4S-10251910/25/2019 320-55761-5R-EVE0.0076 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLGW4Q19-CUMBERLAND-4S-10251910/25/2019 320-55761-5R-EVE0.0073 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLGW4Q19-CUMBERLAND-4S-10251910/25/2019 320-55761-5Byproduct 40.030 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLGW4Q19-CUMBERLAND-4S-10251910/25/2019 320-55761-5Byproduct 40.034 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLGW4Q19-PW-04-103019 10/30/2019 320-55860-4R-EVE0.065 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLGW4Q19-PW-04-103019 10/30/2019 320-55860-4Byproduct 40.20 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLGW4Q19-PW-04-103019 10/30/2019 320-55860-4Byproduct 50.0036 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLGW4Q19-PW-04-103019 10/30/2019 320-55860-4Byproduct 50.0039 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLPage 5 of 8 Quality review criteria exceeded between the REP (laboratory replicate) and parent sample. The reported result may be imprecise.LABSTATSValidation Options:Validation ReasonFayettevilleSite:Sampling Program:GW Sampling 4Q19AnalyticalMethodAnalyteDateSampledPQLValidationQualifierLab Sample IDPre-prepMDLResult TypeField Sample IDPrepUnitsGW4Q19-BLADEN-1D-11071911/07/2019 320-56173-3PFMOAA0.024 ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0050PQLGW4Q19-BLADEN-1D-11071911/07/2019 320-56173-3PFMOAA0.027 ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0050PQLGW4Q19-BLADEN-2S-10221910/22/2019 320-55686-4PFMOAA0.022 ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0050PQLGW4Q19-BLADEN-2S-10221910/22/2019 320-55686-4PFMOAA0.019 ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0050PQLGW4Q19-PIW-10DR-10301910/30/2019 320-55860-2R-EVE0.98 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.070PQLGW4Q19-PIW-10DR-10301910/30/2019 320-55860-2R-EVE0.84 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.070PQLGW4Q19-PIW-2D-110119 11/01/2019 320-56112-3R-EVE0.040 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.014PQLGW4Q19-PIW-2D-110119 11/01/2019 320-56112-3R-EVE0.040 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.014PQLGW4Q19-PIW-3D-102819 10/28/2019 320-55757-6R-EVE0.22 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.014PQLGW4Q19-PIW-3D-102819 10/28/2019 320-55757-6R-EVE0.25 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.014PQLGW4Q19-PIW-8D-103019 10/30/2019 320-55860-9Byproduct 43.3 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.63PQLGW4Q19-PIW-8D-103019 10/30/2019 320-55860-9Byproduct 43.8 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.63PQLGW4Q19-PIW-9D-102319 10/23/2019 320-55683-3Byproduct 51.9 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.29PQLGW4Q19-PIW-9D-102319 10/23/2019 320-55683-3Byproduct 52.2 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.29PQLGW4Q19-PW-04-103019 10/30/2019 320-55860-4R-EVE0.055 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLGW4Q19-PW-04-103019 10/30/2019 320-55860-4Byproduct 40.17 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLGW4Q19-PW-07-110819 11/08/2019 320-56173-7R-EVE0.0095 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLPage 6 of 8 Quality review criteria exceeded between the REP (laboratory replicate) and parent sample. The reported result may be imprecise.LABSTATSValidation Options:Validation ReasonFayettevilleSite:Sampling Program:GW Sampling 4Q19AnalyticalMethodAnalyteDateSampledPQLValidationQualifierLab Sample IDPre-prepMDLResult TypeField Sample IDPrepUnitsGW4Q19-PW-07-110819 11/08/2019 320-56173-7R-EVE0.011 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLGW4Q19-PW-11-102319 10/23/2019 320-55683-2Byproduct 52.0 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.29PQLGW4Q19-PW-11-102319 10/23/2019 320-55683-2Byproduct 52.3 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.29PQLGW4Q19-PW-14-102319 10/23/2019 320-55683-8Byproduct 52.4 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.058PQLGW4Q19-PW-14-102319 10/23/2019 320-55683-8Byproduct 52.0 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.058PQLPage 7 of 8 Associated MS and/or MSD analysis had relative percent recovery (RPR) values less than the lower control limit but above the rejection limit. Thereported result may be biased low.LABSTATSValidation Options:Validation ReasonFayettevilleSite:Sampling Program:GW Sampling 4Q19AnalyticalMethodAnalyteDateSampledPQLValidationQualifierLab Sample IDPre-prepMDLResult TypeField Sample IDPrepUnitsGW4Q19-CUMBERLAND-4S-10251910/25/2019 320-55761-5PMPA0.12 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.010PQLGW4Q19-CUMBERLAND-4S-10251910/25/2019 320-55761-5PMPA0.12 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.010PQLGW4Q19-CUMBERLAND-4S-10251910/25/2019 320-55761-5PFO2HxA0.078 ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLGW4Q19-CUMBERLAND-4S-10251910/25/2019 320-55761-5PFO2HxA0.082 ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLGW4Q19-CUMBERLAND-4S-10251910/25/2019 320-55761-5PFMOAA0.015 ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0050PQLGW4Q19-CUMBERLAND-4S-10251910/25/2019 320-55761-5PFMOAA0.014 ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0050PQLGW4Q19-PW-04-103019 10/30/2019 320-55860-4PFMOAA0.36 ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0050PQLGW4Q19-PW-04-103019 10/30/2019 320-55860-4PFMOAA0.37 ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0050PQLGW4Q19-PW-07-110819 11/08/2019 320-56173-7Hfpo Dimer Acid0.79 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0020PQLGW4Q19-PW-07-110819 11/08/2019 320-56173-7PEPA0.38 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.020PQLGW4Q19-PW-07-110819 11/08/2019 320-56173-7PEPA0.39 UG/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.020PQLGW4Q19-PW-07-110819 11/08/2019 320-56173-7PFMOAA0.31 ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0050PQLGW4Q19-PW-07-110819 11/08/2019 320-56173-7PFMOAA0.31 ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0050PQLGW4Q19-CUMBERLAND-3S-10221910/22/2019 320-55686-5PFMOAA0.013 ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0050PQLGW4Q19-CUMBERLAND-3S-10221910/22/2019 320-55686-5PFMOAA0.013 ug/LCl. Spec. Table 3Compound SOPJPFAS_DI_Prep0.0050PQLPage 8 of 8