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HomeMy WebLinkAbout2020.01.21_CCO.p8_Fluromonomers Manufacturing Process Division Stack Emissions Test ReportIASDATA\CHEMOURS\15418.002.018\DIVISION REPORT 11 2019-AMD 1/21/2020 FLUOROMONOMERS MANUFACTURING PROCESS DIVISION STACK EMISSIONS TEST REPORT TEST DATES: 22 NOVEMBER AND 4 DECEMBER 2019 THE CHEMOURS COMPANY FAYETTEVILLE, NORTH CAROLINA Prepared for: THE CHEMOURS COMPANY 22828 NC Hwy 87 W Fayetteville, North Carolina 28306 Prepared by: WESTON SOLUTIONS, INC. 1400 Weston Way P.O. Box 2653 West Chester, Pennsylvania 19380 January 2020 W.O. No. 15418.002.018 IASDATA\CHEMOURS\15418.002.018\DIVISION REPORT 11 2019-AMD 1/21/2020 THE CHEMOURS COMPANY FLOROMONOMERS MANUFACTURING PROCESS DIVISION STACK EMISSIONS TEST REPORT TEST DATES: 22 November and 4 December 2019 Weston Solutions, Inc. (WESTON®) is a commercial laboratory operating within full accreditation of the Louisiana Environmental Laboratory Accreditation Program under Certificate Number 03024. The qualifications to provide defensible quality data as a certified commercial environmental testing firm as Agency Interest No. 30815 was granted by the Louisiana Department of Environmental Quality under the Louisiana Administrative Code of LAC 33.1 Chapter 45 et al. I certify that I have personally examined and am familiar with the information contained herein. Based on my information and belief formed after reasonable inquiry, the statements and information in the document are true, accurate, and complete. Paul M. Meeter Weston Solutions, Inc. IASDATA\CHEMOURS\15418.002.018\DIVISION REPORT 11 2019-AMD 1/21/2020 i TABLE OF CONTENTS Section Page 1. INTRODUCTION..............................................................................................................1  1.1 FACILITY AND BACKGROUND INFORMATION ...........................................1  1.2 TEST OBJECTIVES ...............................................................................................1  1.3 TEST PROGRAM OVERVIEW .............................................................................1  2. SUMMARY OF TEST RESULTS ...................................................................................4  3. PROCESS DESCRIPTIONS ............................................................................................6  3.1 FLUOROMONOMERS ..........................................................................................6  3.2 PROCESS OPERATIONS AND PARAMETERS .................................................6  4. DESCRIPTION OF TEST LOCATIONS .......................................................................7  4.1 DIVISION STACK ..................................................................................................7  5. SAMPLING AND ANALYTICAL METHODS .............................................................9  5.1 STACK GAS SAMPLING PROCEDURES ...........................................................9  5.1.1 Pre-Test Determinations ...........................................................................9  5.2 STACK PARAMETERS .........................................................................................9  5.2.1 EPA Method 0010.....................................................................................9  5.2.2 EPA Method 0010 Sample Recovery .....................................................11  5.2.3 EPA Method 0010 Sample Analysis.......................................................13  5.3 MM18 ....................................................................................................................15  5.4 GAS COMPOSITION ...........................................................................................17  6. DETAILED TEST RESULTS AND DISCUSSION .....................................................19  APPENDIX A PROCESS OPERATIONS DATA APPENDIX B RAW AND REDUCED TEST DATA APPENDIX C LABORATORY ANALYTICAL REPORT APPENDIX D SAMPLE CALCULATIONS APPENDIX E EQUIPMENT CALIBRATION RECORDS APPENDIX F LIST OF PROJECT PARTICIPANTS IASDATA\CHEMOURS\15418.002.018\DIVISION REPORT 11 2019-AMD 1/21/2020 ii LIST OF FIGURES Title Page Figure 4-1 Division Stack Test Port and Traverse Point Location ................................................ 8  Figure 5-1 EPA Method 0010 Sampling Train ............................................................................. 10  Figure 5-2 HFPO Dimer Acid Sample Recovery Procedures for Method 0010 ......................... 14  Figure 5-3 Modified EPA Method 18 Sampling Train ................................................................ 16  Figure 5-4 WESTON Sampling System ...................................................................................... 18  IASDATA\CHEMOURS\15418.002.018\DIVISION REPORT 11 2019-AMD 1/21/2020 iii LIST OF TABLES Title Page Table 1-1 Sampling Plan for Division Stack .................................................................................. 3  Table 2-1 Summary of HFPO Dimer Acid Division Stack Test Results ........................................ 4  Table 2-2 Summary of Target Compound Division Stack Test Results ......................................... 4  Table 6-1 Summary of HFPO Dimer Acid Test Data and Test Results Division Stack – M0010 Runs 1 and 2.......................................................................................................................... 20  Table 6-2 Summary of Target Compound Test Data and Test Results Division Stack – MM18 Runs 1, 2 and 3...................................................................................................................... 22  IASDATA\CHEMOURS\15418.002.018\DIVISION REPORT 11 2019-AMD 1/21/2020 1 1. INTRODUCTION 1.1 FACILITY AND BACKGROUND INFORMATION The Chemours Fayetteville Works (Chemours) is located in Bladen County, North Carolina, approximately 10 miles south of the city of Fayetteville. Chemours operating areas on the site include the Fluoromonomers, IXM and Polymers Processing Aid (PPA) manufacturing areas, Wastewater Treatment, and Powerhouse. Chemours contracted Weston Solutions, Inc. (Weston) to perform HFPO Dimer Acid Fluoride, captured as HFPO Dimer Acid, and other target compound, emission testing on the Division stack at the facility. Testing was performed on 22 November and 4 December 2019 and generally followed the “Emission Test Protocol” reviewed and approved by the North Carolina Department of Environmental Quality (NCDEQ). This report provides the results from the emission test program. 1.2 TEST OBJECTIVES The specific objectives for this test program were as follows:  Measure the emissions concentrations and mass emissions rates of HFPO Dimer Acid Fluoride and other target compounds from the Division stack which is located in the Fluoromonomers process area.  Monitor and record process and emissions control data in conjunction with the test program.  Provide representative emissions data. 1.3 TEST PROGRAM OVERVIEW During the emissions test program, the concentrations and mass emissions rates of HFPO Dimer Acid and other target compounds were measured at the Division stack. Table 1-1 provides a summary of the test location and the parameters that were measured along with the sampling/analytical procedures that were followed. IASDATA\CHEMOURS\15418.002.018\DIVISION REPORT 11 2019-AMD 1/21/2020 2 Section 2 provides a summary of test results. A description of the processes is provided in Section 3. Section 4 provides a description of the test locations. The sampling and analytical procedures are provided in Section 5. Detailed test results and discussion are provided in Section 6. Appendix C includes the summary reports for the laboratory analytical results. The full laboratory data packages are provided in electronic format. IASDATA\CHEMOURS\15418.002.018\DIVISION REPORT 11 2019-AMD 1/21/2020 3 Table 1-1 Sampling Plan for Division Stack Sampling Point & Location Division Stack Number of Tests: 5 (3 MM18 and 2 M0010) Parameters To Be Tested: HFPO Dimer Acid (HFPO-DA) HFPO Dimer Methyl Ester; HFPO Monomer; Fluoroether E-1; Carbonyl Difluoride Total Fluorine; Hydrogen Fluoride Volumetric Flow Rate and Gas Velocity Carbon Dioxide Oxygen Water Content Sampling or Monitoring Method EPA M- 0010 Modified EPA M-18 Modified EPA M-18 EPA M1 and M2 in conjunction with M-0010 tests EPA M3/3A EPA M4 in conjunction with M-0010 tests Sample Extraction/ Analysis Method(s): LC/MS/MS GC/MS and LC/MS/MS 9056 NA NA NA Sample Size ≥ 1.5m3 ≥ 1.5m3 ≥ 1.5m3 NA NA NA NA Total Number of Samples Collected1 2 3 3 3 3 3 3 Reagent Blanks (Solvents, Resins)1 1 set 1 set 1 set 0 0 0 0 Field Blank Trains1 1 per source 1 per source 0 per source 0 0 0 0 Proof Blanks1 1 per train 1 per train 0 per train 0 0 0 0 Trip Blanks1,2 0 sets 0 sets 0 sets 0 0 0 0 Lab Blanks 1 per fraction3 1 per fraction3 0 per fraction3 0 0 0 0 Laboratory or Batch Control Spike Samples (LCS) 1 per fraction3 1 per fraction3 1 per fraction3 0 0 0 0 Laboratory or Batch Control Spike Sample Duplicate (LCSD) 1 per fraction3 1 per fraction3 1 per fraction3 0 0 0 0 Media Blanks 1 set4 1 set4 1 set4 0 0 0 0 Isotope Dilution Internal Standard Spikes Each sample Each sample Each sample 0 0 0 0 Total No. of Samples 55 65 45 3 3 3 3 Key: 1 Sample collected in field. 2 Trip blanks include one XAD-2 resin module and one methanol sample per sample shipment. 3 Lab blank and LCS/LCSD includes one set per analytical fraction (front half, back half and condensate). 4 One set of media blank archived at laboratory at media preparation. 5 Actual number of samples collected in field. IASDATA\CHEMOURS\15418.002.018\DIVISION REPORT 11 2019-AMD 1/21/2020 4 2. SUMMARY OF TEST RESULTS A total of three MM18 and two M0010 test runs were performed on the Division stack. Table 2-1 provides a summary of the HFPO Dimer Acid emissions test results associated with M0010. Table 2-2 provides a summary of the target compound emissions test results associated with MM18. Detailed test results summaries are provided in Section 6. It is important to note that emphasis is being placed on the characterization of the emissions based on the M0010 stack test results. Research conducted in developing the protocol for stack testing HFPO Dimer Acid Fluoride, HFPO Dimer Acid Ammonium Salt and HFPO Dimer Acid realized that the resulting testing, including collection of the air samples and extraction of the various fraction of the sampling train, would result in all three compounds being expressed as simply the HFPO Dimer Acid. However, it should be understood that the total M0010 HFPO Dimer Acid results provided in Table 2-1 and in this report include a percentage of each of the three compounds. Table 2-1 Summary of M0010 HFPO Dimer Acid Division Stack Test Results Division Stack – M0010 g/sec lb/hr R1 1.94E-04 1.54E-03 R2 3.39E-04 2.69E-03 Average 2.66E-04 2.12E-03 Samples taken using MM18 were analyzed for the following volatile organic compounds (“target compounds”): HFPO Dimer, Methyl Ester as HFPO (HFPO Dimer Methyl Ester); 2-MTP as HFPO (HFPO Monomer); Heptafluoropropyl 1,2,2,2-tetrafluoroethyl ether (Fluoroether E-1); Carbonyl Difluoride; Total Fluorine and Hydrogen Fluoride. Results of MM18 target compound analysis are provided in Table 2-2. IASDATA\CHEMOURS\15418.002.018\DIVISION REPORT 11 2019-AMD 1/21/2020 5 Table 2-2 Summary of MM18 Target Compound Division Stack Test Results Target Compound Division Stack MM18 Run 1 Division Stack MM18 Run 2 Division Stack MM18 Run 3 g/sec lb/hr g/sec lb/hr g/sec lb/hr HFPO Dimer Methyl Ester <4.38E-03 <3.48E-02 <2.60E-03 <2.07E-02 <2.63E-03 <2.09E-02 HFPO Monomer 3.74E-01 2.97E+00 3.15E-01 2.50E+00 1.92E+00 1.53E+01 Fluoroether E-1 2.91E-02 2.31E-01 6.67E-02 5.30E-01 2.41E-02 1.92E-01 Carbonyl Difluoride <1.34E-02 <1.06E-01 <7.96E-03 <6.33E-02 <8.03E-03 <6.38E-02 Total Fluorine 7.27E+00 5.78E+01 5.94E+00 4.72E+01 1.40E+01 1.11E+02 Hydrogen Fluoride <1.82E-01 <1.45E+00 <1.09-01 <8.63E-01 <1.10E-01 <8.70E-01 Note: All < values were below the laboratory analysis detection limits. Emission rates were calculated using the method detection limit (MDL) for the first analytical fraction of the target compound. IASDATA\CHEMOURS\15418.002.018\DIVISION REPORT 11 2019-AMD 1/21/2020 6 3. PROCESS DESCRIPTIONS The Fluoromonomers area is included in the scope of this test program. 3.1 FLUOROMONOMERS These facilities produce a family of fluorocarbon compounds used to produce Chemours products such as Nafion®, Krytox®, and Viton®, as well as sales to outside customers. At the time of testing, process emissions were vented to the Division waste gas scrubber system (which included the secondary scrubber) and vented to the Carbon Bed and then into the Division stack. The VE North building air systems were vented to the Carbon Bed and then into the Division stack. 3.2 PROCESS OPERATIONS AND PARAMETERS The following table is a summary of the operation and products from the specific areas tested. Source Operation/Product Batch or Continuous VE North PPVE Condensation is continuous. Agitated Bed Reactor and Refining are batch. During the test program, the following parameters were monitored by Chemours and are included in Appendix A.  Fluoromonomers Process o VEN Precurser Rate o VEN Condensation Rate o VEN ABR Rate IASDATA\CHEMOURS\15418.002.018\DIVISION REPORT 11 2019-AMD 1/21/2020 7 4. DESCRIPTION OF TEST LOCATIONS 4.1 DIVISION STACK Two 6-inch ID test ports were installed on the 36-inch ID fiberglass stack as shown below. The four vents that enter the top of the stack and the one vent ~11 feet below are catch pots which, under normal process operations, do not discharge to the stack. They are used to vent process gas to the stack in the event of a process upset and are not considered a flow contributor or a disturbance. Per EPA Method 1, a total of 12 traverse points (six per axis) were used for M-0010 isokinetic sampling. Figure 4-1 provides a schematic of the test ports and traverse point locations. Location Distance from Flow Disturbance Downstream (B) Upstream (A) Division Stack 30 feet > 10 duct diameters 9 feet > 3 diameters The EPA Method 18 sample was collected at a constant rate at a single point at the approximate center of the stack.  75$9(56( 32,17 180%(5 ',67$1&()520 ,16,'(1($5 :$// ,1&+(6       ),*85(1 ',9,6,2167$&.7(673257 $1'75$9(56(32,17/2&$7,216 ,$6'$7$?&+(02856?8?),*85(1',9,6,2167$&.8 a %8,/',1* (;+$867 ,')$1 ',6&+$5*( &$7&+327 a a a aaaaa &$7&+3279(176 '5$:,1*127726&$/( a a       IASDATA\CHEMOURS\15418.002.018\DIVISION REPORT 11 2019-AMD 9 5. SAMPLING AND ANALYTICAL METHODS 5.1 STACK GAS SAMPLING PROCEDURES The purpose of this section is to describe the stack gas emissions sampling trains and to provide details of the stack sampling and analytical procedures utilized during the emissions test program. 5.1.1 Pre-Test Determinations Preliminary test data were obtained at the test location. Stack geometry measurements were measured and recorded, and traverse point distances verified. A preliminary velocity traverse was performed utilizing a calibrated S-type pitot tube and an inclined manometer to determine velocity profiles. Flue gas temperatures were observed with a calibrated direct readout panel meter equipped with a chromel-alumel thermocouple. Preliminary water vapor content was estimated by wet bulb/dry bulb temperature measurements. A check for the presence or absence of cyclonic flow was previously conducted at the test location. The cyclonic flow check was negative (< 20°) verifying that the test location was acceptable for testing. Preliminary test data was used for nozzle sizing and sampling rate determinations for isokinetic sampling procedures. Calibration of probe nozzles, pitot tubes, metering systems, and temperature measurement devices was performed as specified in Section 5 of EPA Method 5 test procedures. 5.2 STACK PARAMETERS 5.2.1 EPA Method 0010 The sampling train utilized to perform the HFPO Dimer Acid sampling at the location was an EPA Method 0010 train (see Figure 5-1). The Method 0010 consisted of a borosilicate nozzle that attached directly to a heated borosilicate probe. In order to minimize possible thermal degradation of the HFPO Dimer Acid, the probe and particulate filter were heated above stack temperature to minimize water vapor condensation before the filter. The probe was connected directly to a heated borosilicate filter holder containing a solvent extracted glass fiber filter. 9(17:$//,&(:$7(55(&,5&8/$7,213803&21'(16$7(75$3,03,1*(56,&(%$7+9$&880/,1(0$,19$/9(7(03(5$785(6(16256%<3$669$/9($,57,*+73803'5<*$60(7(525,),&(0$120(7(5&+(&.9$/9(7(03(5$785(6(1625+($7('$5($),/7(5+2/'(525,),&(6,/,&$*(/&21'(16(5;$'625%(1702'8/(621($1'7:27(03(5$785(6(16257(03(5$785(6(16259$&880*$8*(,$6'$7$?&+(02856?18?),*85(0(7+2'),*85((3$0(7+2'6$03/,1*75$,1+($7('352%(%87721+22.12==/(5(9(56(7<3(3,72778%(10 127(7+(&21'(16(50$<%(326,7,21('+25,=217$//<7+(;$'625%(1702'8/(:,//$/:$<6%(,1$9(57,&$/326,7,215,*,'%2526,/,&$7(78%,1*25)/(;,%/(6$03/(/,1(,&(:$7(55(&,5&8/$7,21&21'(16$7(75$3,03,1*(5 IASDATA\CHEMOURS\15418.002.018\DIVISION REPORT 11 2019-AMD 1/21/2020 11 A section of borosilicate glass or flexible polyethylene tubing connected the filter holder exit to a Grahm (spiral) type ice water-cooled condenser, an ice water-jacketed sorbent module containing approximately 40 grams of XAD-2 resin. The XAD-2 resin tube was equipped with an inlet temperature sensor. The XAD-2 resin trap was followed by a condensate knockout impinger and a series of two impingers that contained 100 mL of high-purity distilled water. The train also included a second XAD-2 resin trap behind the impinger section to evaluate possible sampling train breakthrough. Each XAD-2 resin trap was connected to a 1-liter condensate knockout trap. The final impinger contained 300 grams of dry pre-weighed silica gel. All impingers and the condensate traps were maintained in an ice bath. Ice water was continuously circulated in the condenser and the XAD-2 module to maintain method-required temperature. A control console with a leakless vacuum pump, a calibrated orifice, and dual inclined manometers was connected to the final impinger via an umbilical cord to complete the sample train. HFPO Dimer Acid Fluoride (CAS No. 2062-98-8) that is present in the stack gas is expected to be captured in the sampling train along with HFPO Dimer Acid (CAS No. 13252-13-6). HFPO Dimer Acid Fluoride underwent hydrolysis instantaneously in water in the sampling train and during the sample recovery step, and was converted to HFPO Dimer Acid such that the amount of HFPO Dimer Acid emissions represented a combination of both HFPO Dimer Acid Fluoride and HFPO Dimer Acid. During sampling, gas stream velocities were measured by attaching a calibrated S-type pitot tube into the gas stream adjacent to the sampling nozzle. The velocity pressure differential was observed immediately after positioning the nozzle at each traverse point, and the sampling rate adjusted to maintain isokineticity at 100% ± 10. Flue gas temperature was monitored at each point with a calibrated panel meter and thermocouple. Isokinetic test data was recorded at each traverse point during all test periods, as appropriate. Leak checks were performed on the sampling apparatus according to reference method instructions, prior to and following each run, component change (if required) or during midpoint port changes. 5.2.2 EPA Method 0010 Sample Recovery At the conclusion of each test, the sampling train was dismantled, the openings sealed, and the components transported to the field laboratory trailer for recovery. A consistent procedure was employed for sample recovery: IASDATA\CHEMOURS\15418.002.018\DIVISION REPORT 11 2019-AMD 1/21/2020 12 1.The two XAD-2 covered (to minimize light degradation) sorbent modules (1 and 2) were sealed and labeled. 2.The glass fiber filter(s) were removed from the holder with tweezers and placed in a polyethylene container along with any loose particulate and filter fragments. 3.The particulate adhering to the internal surfaces of the nozzle, probe and front half of the filter holder were rinsed with a solution of methanol and ammonium hydroxide into a polyethylene container while brushing a minimum of three times until no visible particulate remained. Particulate adhering to the brush was rinsed with methanol/ ammonium hydroxide into the same container. The container was sealed. 4.The volume of liquid collected in the first condensate trap was measured, the value recorded, and the contents poured into a polyethylene container. 5.All train components between the filter exit and the first condensate trap were rinsed with methanol/ammonium hydroxide. The solvent rinse was placed in a separate polyethylene container and sealed. 6.The volume of liquid in impingers one and two, and the second condensate trap, were measured, the values recorded, and the sample was placed in the same container as Step 4 above, then sealed. 7.The two impingers, condensate trap, and connectors were rinsed with methanol/ ammonium hydroxide. The solvent sample was placed in a separate polyethylene container and sealed. 8.The silica gel in the final impinger was weighed and the weight gain value recorded. 9.Site (reagent) blank samples of the methanol/ammonium hydroxide, XAD resin, filter and distilled water were retained for analysis. Each container was labeled to clearly identify its contents. All samples were maintained cool. Following sample recovery, all samples were transported to Eurofins TestAmerica (TestAmerica) for sample extraction and analysis. See Figure 5-2 for a schematic of the Method 0010 sample recovery process. IASDATA\CHEMOURS\15418.002.018\DIVISION REPORT 11 2019-AMD 1/21/2020 13 5.2.3 EPA Method 0010 Sample Analysis Method 0010 sampling trains resulted in four separate analytical fractions for HFPO Dimer Acid analysis according to SW-846 Method 3542: Front-half Composite—comprised of the particulate filter, and the probe, nozzle, and front-half of the filter holder solvent rinses; Back-half Composite—comprised of the first XAD-2 resin material and the back-half of the filter holder with connecting glassware solvent rinses; Condensate Composite—comprised of the aqueous condensates and the contents of impingers one and two with solvent rinses; Breakthrough XAD-2 Resin Tube—comprised of the resin tube behind the series of impingers. The second XAD-2 resin material was analyzed separately to evaluate any possible sampling train HFPO-DA breakthrough. The front-half and back-half composites and the second XAD-2 resin material were placed in polypropylene wide-mouth bottles and tumbled with methanol containing 5% NH4OH for 18 hours. Portions of the extracts were processed analytically for the HFPO dimer acid by liquid chromatography and duel mass spectroscopy (HPLC/MS/MS). The condensate composite was concentrated onto a solid phase extraction (SPE) cartridge followed by desorption from the cartridge using methanol. Portions of those extracts were also processed analytically by HPLC/MS/MS. ,$6'$7$?&+(02856?18?),*85((3$),*85(+)32',0(5$&,'6$03/(5(&29(5<352&('85(6)250(7+2'12==/(352%($1')5217+$/)),/7(5+2/'(56$03/()5$&7,21),/7(56$03/()5$&7,21%$&.+$/)),/7(5+2/'(5&211(&7256)/(;,%/(/,1(&21'(16(56$03/()5$&7,21;$'02'8/(21(6$03/()5$&7,215(029()520,03,1*(575$,1:$6+:,7+0(7+$12/$0021,80+<'52;,'(6($/,1/$%(/('32/<(7+</(1(%277/(&203/(7(&8672'<)2506(&85(6$03/($1'.((3&22/:$6+:+,/(%586+,1*:,7+0(7+$12/$0021,80+<'52;,'(6($/(1'6:,7+*/$66&$36&29(5/$%(/&203/(7(&8672'<)2506(&85(6$03/($7$1'.((3&22/75$16)(5:$6+,1*67232/<(7+</(1(%277/(/$%(/6($/$1'0$5./,48,'/(9(/&203/(7(&8672'<)2506(&85(6$03/($1'.((3&22/6($/:$6+,1*6,1/$%(/('32/<(7+</(1(%277/(0$5./,48,'/(9(/&203/(7(&8672'<)2506(&85(6$03/($1'.((3&22/),567$1'6(&21'&21'(16$7(75$36$1',03,1*(5126$1'6$03/()5$&7,21,03,1*(5123 6,/,&$*(/ :(,*+$1'5(&25'0($685(92/80(2)/,48,'$1'5(&25'75$16)(5:$6+,1*67232/<(7+</(1(%277/(/$%(/6($/$1'0$5./,48,'/(9(/&203/(7(&8672'<)2506(&85(6$03/($1'.((3&22/14:(,*+$1'5(&25'5(7$,1)255(*(1(5$7,21),567$1'6(&21'&21'(16$7(75$36$1',03,1*(5126$1'6$03/()5$&7,21:$6+:,7+0(7+$12/$0021,80+<'52;,'(75$16)(5:$6+,1*67232/<(7+</(1(%277/(/$%(/6($/$1'0$5./,48,'/(9(/&203/(7(&8672'<)2506(&85(6$03/($1'.((3&22/;$'02'8/(7:26$03/()5$&7,215(029()520,03,1*(575$,16($/(1'6:,7+*/$66&$36&29(5/$%(/&203/(7(&8672'<)2506(&85(6$03/($7$1'.((3&22/ IASDATA\CHEMOURS\15418.002.018\DIVISION REPORT 11 2019-AMD 1/21/2020 15 Samples were spiked with isotope dilution internal standard (IDA) at the commencement of their preparation to provide accurate assessments of the analytical recoveries. Final data was corrected for IDA standard recoveries. TestAmerica developed detailed procedures for the sample extraction and analysis for HFPO Dimer Acid. These procedures were incorporated into the test protocol. 5.3 MM18 The sampling train utilized to perform the target compound sampling at the Division stack was a modified EPA Method 18 train using full size Teflon® impingers. Impingers 1 through 6 each contained 100 mL of methanol. See Figure 5-3 for the modified EPA Method 18 sampling train. The impingers were maintained in a dry ice/methanol bath. Each test run was approximately 90 minutes in duration collecting at a rate of approximately ≥1.5 liters per minute. Each impinger was recovered and included a methanol rinse of each impinger and connector. The impinger contents and rinses were collected separately. Each sample was analyzed by EPA SW-846 Method 8260B and 8231A procedures by Gas Chromatography (GC) Mass Spectrometry (MS). During the Division stack test campaign, a blank train was set up near the test location, leak- checked and recovered along with the respective sample train. Following sample recovery, all samples were transported to TestAmerica for sample extraction and analysis. VACUUM LINEMAINVALVETEMPERATURESENSORSBY-PASS VALVEDRY GASMETERCUBIC LITERSORIFICEVACUUMGAUGEAIR-TIGHTPUMPDRY ICE AND METHANOLBATHMETHANOL IN EACH IMPINGERFIGURE 5-3MODIFIED EPA METHOD 18 SAMPLING TRAIN FOR PFAS COMPOUNDSGLASS IMPINGERSSTACK WALLPLASTIC OR GLASS PROBEPRESSUREDIFFERENTIALGAUGE,$6'$7$?&+(02856?8?),*85(3(3$1816 IASDATA\CHEMOURS\15418.002.018\DIVISION REPORT 11 2019-AMD 1/21/2020 17 5.4 GAS COMPOSITION The Weston mobile laboratory equipped with instrumental analyzers was used to measure carbon dioxide (CO2) and oxygen (O2) concentrations. A diagram of the Weston sampling system is presented in Figure 5-4. For the Division stack test campaign, the sample was collected at the exhaust of the Method 0010 sampling system. At the end of the line, a tee permitted the introduction of calibration gas. The sample was drawn through a heated Teflon® sample line to the sample conditioner. The output from the sampling system was recorded electronically, and one minute averages were recorded and displayed on a data logger. Each analyzer was set up and calibrated internally by introduction of calibration gas standards directly to the analyzer from a calibration manifold. The calibration manifold is designed with an atmospheric vent to release excess calibration gas and maintained the calibration at ambient pressure. The direct calibration sequence consisted of alternate injections of zero and mid-range gases with appropriate adjustments until the desired responses were obtained. The high-range standards were then introduced in sequence without further adjustment. The sample line integrity was verified by performing a bias test before and after each test period. The sampling system bias test consisted of introducing the zero gas and one up-range calibration standard in excess to the valve at the probe end when the system was sampling normally. The excess calibration gas flowed out through the probe to maintain ambient sampling system pressure. Calibration gas supply was regulated to maintain constant sampling rate and pressure. Instrument bias check response was compared to internal calibration responses to insure sample line integrity and to calculate a bias correction factor after each run using the ratio of the measured concentration of the bias gas certified by the calibration gas supplier. The oxygen and carbon dioxide content of each stack gas was measured according to EPA Method 3A procedures which incorporate the latest updates of EPA Method 7E. A Servomex Model 4900 analyzer (or equivalent) was used to measure oxygen content. A Servomex Model 4900 analyzer (or equivalent) was used to measure carbon dioxide content of the stack gas. Both analyzers were calibrated with EPA Protocol gases prior to the start of the test program and performance was verified by sample bias checks before and after each test run. +($7('6$03/(352%(67$&.:$//+($7('),/7(5+2/'(5250(7+2'6$03/(75$,1+($7('6$03/(/,1(6$03/(&21',7,21,1*6<67(002,6785(5(029$/9(17&22*$6$1$/<=(56$&48,6I7,21,17(5)$&($1$/2*6,*1$//,1(&20387(5)25'$7$$&48,6,7,21$1'5('8&7,216$03/(3803&$/,%5$7,21*$6(6 212))9$/9(&$/,%5$7,21%,$6/,1(),*85(4 :(67216$03/,1*6<67(0,$6'$7$?&+(02856?18?),*85(4:(67216$03/,1*6<67(018 IASDATA\CHEMOURS\15418.002.018\DIVISION REPORT 11 2019-AMD 1/21/2020 19 6.DETAILED TEST RESULTS AND DISCUSSION M0010 test run number two was stopped prior to the full run time due to a process upset in the area. The run was considered complete and the sample was recovered and submitted for analysis. A total of two M0010 test runs were performed at the location. A total of three MM18 test runs were performed at the location. Table 6-1 provides detailed M0010 test data and test results for Division stack. Table 6-2 provides detailed MM18 test data and test results for the Division stack. The Method 3A sampling indicated that the O2 and CO2 concentrations were at ambient air levels (20.9% O2, 0% CO2), therefore, 20.9% O2 and 0% CO2 values were used in all calculations. It should be noted that methylene chloride was identified in the MM18 analytical results. This detection was due to a special procedure done in the process area in which methylene chloride was used to unplug equipment that experienced plugging during testing. Methylene chloride would not typically be detected in this process area. 1/2/2020 11:03 AM 20 112219 Div Stack M0010 Test Data Run number 1 2 Location Divison Stack Divison Stack Date 11/22/19 11/22/19 Time period 0826-1022 1139-1324 SAMPLING DATA: Sampling duration, min.96.0 84.0 Nozzle diameter, in.0.160 0.160 Cross sectional nozzle area, sq.ft.0.000140 0.000140 Barometric pressure, in. Hg 30.02 30.02 Avg. orifice press. diff., in H2O 1.40 1.00 Avg. dry gas meter temp., deg F 57.0 65.2 Avg. abs. dry gas meter temp., deg. R 517 525 Total liquid collected by train, ml 34.4 21.5 Std. vol. of H2O vapor coll., cu.ft.1.6 1.0 Dry gas meter calibration factor 0.9972 0.9972 Sample vol. at meter cond., dcf 63.136 47.088 Sample vol. at std. cond., dscf (1)64.704 47.462 Percent of isokinetic sampling 101.0 100.5 GAS STREAM COMPOSITION DATA: CO2, % by volume, dry basis 0.0 0.0 O2, % by volume, dry basis 20.9 20.9 N2, % by volume, dry basis 79.1 79.1 Molecular wt. of dry gas, lb/lb mole 28.84 28.84 H20 vapor in gas stream, prop. by vol.0.024 0.021 Mole fraction of dry gas 0.976 0.979 Molecular wt. of wet gas, lb/lb mole 28.57 28.61 GAS STREAM VELOCITY AND VOLUMETRIC FLOW DATA: Static pressure, in. H2O -0.35 -0.35 Absolute pressure, in. Hg 29.99 29.99 Avg. temperature, deg. F 72 79 Avg. absolute temperature, deg.R 532 539 Pitot tube coefficient 0.84 0.84 Total number of traverse points 12 12 Avg. gas stream velocity, ft./sec.82.0 69.9 Stack/duct cross sectional area, sq.ft.7.07 7.07 Avg. gas stream volumetric flow, wacf/min.34799 29659 Avg. gas stream volumetric flow, dscf/min.33787 28485 (1)Standard conditions = 68 deg. F. (20 deg. C.) and 29.92 in Hg (760 mm Hg) TABLE 6-1 CHEMOURS - FAYETTEVILLE, NC SUMMARY OF HFPO DIMER ACID TEST DATA AND TEST RESULTS DIVISION STACK 1/2/2020 11:03 AM 21 112219 Div Stack M0010 TEST DATA Run number 1 2 Location Divison Stack Divison Stack Date 11/22/19 11/22/19 Time period 0826-1022 1139-1324 LABORATORY REPORT DATA, ug. HFPO Dimer Acid 22.31 33.88 EMISSION RESULTS, ug/dscm. HFPO Dimer Acid 12.17 25.20 EMISSION RESULTS, lb/dscf. HFPO Dimer Acid 7.60E-10 1.57E-09 EMISSION RESULTS, lb/hr. HFPO Dimer Acid 1.54E-03 2.69E-03 EMISSION RESULTS, g/sec. HFPO Dimer Acid 1.94E-04 3.39E-04 TABLE 6-1 (cont.) CHEMOURS - FAYETTEVILLE, NC SUMMARY OF HFPO DIMER ACID TEST DATA AND TEST RESULTS DIVISION STACK 1/21/202010:39 AM 22 112219 Div Stack MM18 TEST DATA Test run number 1 2 3 Location Division Stack Division Stack Division Stack Test date 11/22/19 11/22/19 12/4/19 Test time period 0826-1022 1139-1318 0955-1125 Operator WF WF KS SAMPLING DATA Duration, minutes 84 78 90 Average dry gas meter press. in. H2O 3.41 3.56 5.00 Average dry gas meter temp. deg. F 54.9 66.00 54.50 Average absolute meter temp. deg. R 514.9 526.0 514.5 Sample vol. at meter cond., dcl 143.580 147.394 159.313 Meter box calibration, Y 0.9996 0.9996 1.0140 Barometric pressure, in. Hg 30.02 30.02 30.12 Sample volume, dscl (1)148.843 149.624 168.860 Sample volume, dscf (1)5.256 5.283 5.963 VOLUMETRIC FLOW RATE Avg. gas stream volumetric flow, dscf/min.33,787 28,485 31,136 (1) Standard conditions = 68 deg. F. (20 deg. C.) and 29.92 inches Hg (760mm Hg). TABLE 6-2 CHEMOURS-FAYETTEVILLE, NC INPUTS FOR EPA MM18 TARGET COMPOUND CALCULATIONS DIVISION STACK 1/21/202010:39 AM 23 112219 Div Stack MM18 TEST DATA Run number 1 2 3 Location Division Stack Division Stack Division Stack Date 11/22/19 11/22/19 12/4/19 Time period 0826-1022 1139-1318 0955-1125 LABORATORY REPORT DATA, ug. <40.9 <29 <30.2 HFPO Monomer 3497.4 3507 22080 Fluoroether E-1 272 743 277.7 <125 <88.7 <92.3 Total Fluorine 67940 66200 160830 Hydrogen Fluoride <1700 <1210 <1260 EMISSION RESULTS, ug/dscm. <2.75E+02 <1.94E+02 <1.79E+02 HFPO Monomer 2.35E+04 2.34E+04 1.31E+05 Fluoroether E-1 1.83E+03 4.97E+03 1.64E+03 <8.40E+02 <5.93E+02 <5.47E+02 Total Fluorine 4.56E+05 4.42E+05 9.52E+05 Hydrogen Fluoride <1.14E+04 <8.09E+03 <7.46E+03 EMISSION RESULTS, lb/dscf. <1.72E-08 <1.21E-08 <1.12E-08 HFPO Monomer 1.47E-06 1.46E-06 8.16E-06 Fluoroether E-1 1.14E-07 3.10E-07 1.03E-07 <5.24E-08 <3.70E-08 <3.41E-08 Total Fluorine 2.85E-05 2.76E-05 5.95E-05 Hydrogen Fluoride <7.13E-07 <5.05E-07 <4.66E-07 EMISSION RESULTS, lb/hr. <3.48E-02 <2.07E-02 <2.09E-02 HFPO Monomer 2.97E+00 2.50E+00 1.53E+01 Fluoroether E-1 2.31E-01 5.30E-01 1.92E-01 <1.06E-01 <6.33E-02 <6.38E-02 Total Fluorine 5.78E+01 4.72E+01 1.11E+02 Hydrogen Fluoride <1.45E+00 <8.63E-01 <8.70E-01 EMISSION RESULTS, g/sec. <4.38E-03 <2.60E-03 <2.63E-03 HFPO Monomer 3.74E-01 3.15E-01 1.92E+00 Fluoroether E-1 2.91E-02 6.67E-02 2.41E-02 <1.34E-02 <7.96E-03 <8.03E-03 Total Fluorine 7.27E+00 5.94E+00 1.40E+01 Hydrogen Fluoride <1.82E-01 <1.09E-01 <1.10E-01 Note: All < values were below the laboratory analysis detection limits. The value shown is the method detection limit (MDL) for the first analytical fraction of the target compound in order to develop emission rates. TABLE 6-2 (cont.) CHEMOURS - FAYETTEVILLE, NC SUMMARY OF EPA MM18 TARGET COMPOUND TEST DATA AND TEST RESULTS Carbonyl Difluoride Carbonyl Difluoride Carbonyl Difluoride Carbonyl Difluoride Carbonyl Difluoride HFPO Dimer Methyl Ester HFPO Dimer Methyl Ester HFPO Dimer Methyl Ester HFPO Dimer Methyl Ester HFPO Dimer Methyl Ester IASDATA\CHEMOURS\15418.002.018\DIVISION REPORT 11 2019-AMD 1/21/2020 APPENDIX A PROCESS OPERATIONS DATA 24 Division Date: 11/22/2019 Time Stack Testing HFPO VEN Product VEN Precursor VEN Condensation (HFPO) VEN ABR VEN Refining Stripper Column Vent Division WGS Recirculation Flow Division WGS Inlet Flow Date: 12/4/2019 Time Stack Testing HFPO VEN Product VEN Precursor VEN Condensation (HFPO) VEN ABR VEN Refining Stripper Column Vent Division WGS Recirculation Flow Division WGS Inlet Flow 800 900 1000 1100 1300 1400 1500 1600 RUN 1: 0826-1022 RUN 2 - 1139-1320 1200 PPVE Burnout 15,000 kg/h 142 kg/h 145 kg/h 148 kg/h 150 kg/h 135 kg/h 128 kg/h 74 kg/h103 kg/h RUN 3 0955-1125 PPVE 800 900 1000 1100 15,000 kg/h 65 kg/h 73 kg/h 110 kg/h 25 IASDATA\CHEMOURS\15418.002.018\DIVISION REPORT 11 2019-AMD 1/21/2020 APPENDIX B RAW AND REDUCED TEST DATA 26 Sample and Velocity Traverse Point Data Sheet -Method 1 Client CJ::tl 1\1 eAA.I\,� Operator � Loact1on/Plant Vlt':f t, {;fcu, I le, /v. �Date / 2J-. !l Source (}, v: ,,�.;,,..) _5 �-rj(.L. W O Number J,T(t� . ..!:O .� Duct Type "' Circular D Rectangular Duct Indicate eppropMate type Traverse Type II( Particulate Traverse D Velocity Traverse D CEM Traverse Distance from far wall to outside of oort lln. l = C <:°<""'"" /) Flow Disturbances -Port Deoth (in.) = D 12"1'.� u:r Upstream - A (ft) (1� � (t I Deoth or Duct, diameter (in.I= C-D �I"' '(I Area of Duct (ff) ,,,, -11 � 7 01 -, , -� . --Total Traverse Points 1 \ I t\,\J,fa. Total Traverse Points oer Port ,, . � Port Diameter fln.l-/Flanae-Threaded-Holel l/ I/ Monorail Lenoth t). Rectangular Ducts Onty Width of Duct, rectanaular duct only (In. I / Total Ports (rectanoular duct only) / Eauivalent Diameter= 12·L 'Wl/(L+W) / ,. Traverse Point Locations Distance from Traverse Inside Duct Distance1from Outside of Point % of Duct Wall{inl /Port/in) 1, 1 'i I 1.-\ I, b2 jtµ/,;, '1,£> 2 , ...., (,,.'>.'-/0 h A il1, 'l y :>f-uir. 7 ,vr 3 2.'1 " I0,9S-ti�·\ 1T 1/e 1�. t.J ?l,,,D""I ,,� 1 'I.'> 4 '7"/, V 5 6 7 8 10 11 12 1 2 3 9S: 'i 31 �9 l{-� t Cf5.lv 35.)7 $"� f� '-.. L �,4.Mre} (� CEM 3 Polnl(Long Measurm•nt Un•) StraUflcaton PO,nt Locations 0.167 0.50 0.833 Note: If stack dla < 12 inch use EPA Method 1A (Sample port upstream of pilot port) Note: � stack dia >24" then adjust traverse point to 1 inch from wall If stack dia <.24" then adjust traverse point to 0.5 inch from wall l 2 T I 146 r 2 85.4 . ) 'L 4 • 0 r C 5 • a 6 o I 7 8 p 0 o n 9 I 10 n II 12 Traverso Point Location Ptrcant of Stack .Circular J 4 6.7 25 75 ,:i.; NwnberofT IPoints 5 6 8 4.4 3.2 14.6 tQ.5 29.6 19.4 70.4 :12.3 85.4 67.7 95.6 8D.6 89.5 96.B' 9 10 26 82 14.6 22.6 )42 65.8 77.4 115.4 91.8 97.4 ll tf<r ·'ltt 12 2.1 6.7 118 11.1 25 l5.6 64.4 15 82.3 w 9).3 97.9 Downstream - B (ft) -91 ;}Qt Upstream - A (duct diameters\ ,."t. Downstream - B /duct diameters) "'61Diagram of Stack 11 ::::;;,_ ..---" / <'.l� ' I>-ry ·i 5D ...- j .-- Duct 0·1ameters Upstream from Flow Disturbance (Distance A} 05 1 0 1 5 2.0 25 50 I I I I I I I Stack Diameter> 24 Inches °""""""' t 40 -A ±. ---� -�·Minimum Number cf • l ... JO -Particulate Traverse Points l .,....._. 24 (ch::ular) 25 (mctangulw dl.Jd.<l.) � 20 - Traverse Polllls for Velocity 16 12 I � 10 ,_ {Disturbance =Band, Expansion, Contraction, etc } B(tmJiir)lilj� S1ad,.Dlaar�Dti."12.24Rnefl 4 Duct Dlemehn Downstraam from Ac,.v Dl!1furbance (Olslenca B) Travers, Point Location Pan:ent of Stack �ootanaular NIJ!lber ofTnr.,ne Polnls I 2 l 4 5 6 7 8 9 10 II ll T I 250 167 125 100 8.J 7.1 6.J 5.6 5.0 4.5 41 ' 2 7S.O 51l0 31J 30.0 25.!J ZIA 18.J 16.7 IS.II ll.li 11.l . J 8) 3 62.5 500 417 )5.7 JU 27.8 250 22.7 208 ,l 4 '7.5 70.!I ID 511.0 43.1 :IU 310 31.8 29.Z ,o '' 5 90.0 75.0 60 563 500 4S.O 40.9 Jl.l ' a 6 91.1 'JU 61.1 !U ru :!tea 45.8 'I 7 C/2.9 813 72.2 65.0 ;9.1 l4.l i tu w 75.0 42 /ill p 0 o n i 94.4 85.0 m 708 I 10 i5JI 116.4 19.1 " II 955 875 12 !J!;JI ' 27 CHEMOURS - FAYETTEVILLE, NC INPUTS FOR HFPO DIMER ACID CALCULATIONS DIVISION STACK Test Data Run number 1 2 Location Divison Stack Divison Stack Date 11/22/19 11/22/19 Time period 0826-1022 1139-1324 Operator BB BB Inputs For Calcs.Sq. rt. delta P 1.45039 1.22804Delta H 1.4025 1.0010Stack temp. (deg.F)71.6 79.4Meter temp. (deg.F)57.0 65.2Sample volume (act.)63.136 47.088Barometric press. (in.Hg)30.02 30.02 Volume H2O imp. (ml)10.0 7.0 Weight change sil. gel (g)24.4 14.5 % CO2 0.0 0.0 % O2 20.9 20.9 % N2 79.1 79.1 Area of stack (sq.ft.) 7.070 7.070 Sample time (min.)96.0 84.0 Static pressure (in.H2O)-0.35 -0.35 Nozzle dia. (in.)0.160 0.160 Meter box cal.0.9972 0.9972 Cp of pitot tube 0.84 0.84 Traverse points 12 12 1/2/2020 11:02 AM 112219 Div Stack M001028 ISOKINETIC FIELD DATA SHEET EPA Method 0010 - HFPO Dimer Acid Page J~ orb client chemours Stack Conditions Meter Box ID K Factor Q w.o.# 15418.002.018 Assumed Actual MeterBox Y ,rjq'7 a Project ID Chemours %Moisture ^~ 3 Meter Box Del H ~ , $'j ~~ Illltlal Mid-Point Final Mode/Source ID Division Impinger Vol (ml) Probe ID /Length L~~ ~ ` Sample Train (ft3) o , o D 5 GAO U, (~(~ Samp. Loc. ID STK Silica gel (g) Probe Material ~Boro Leak Check @ (in Hg) `~ ~ S ~~ ~" Run No.ID 1 CO2, °/ by Vol Q Pitot /Thermocouple ID Pitot leak check good yes no / no / no Test Method ID M0010 02, % by Vol ~ ~ Pitot Coe~cient 84~r Pitot Inspection good / no ye / no ! no Date ID NOV2019 Temperature (°F) ~ Noale ID ~~ Method 3 System good yes ! no yes / no yes / no Source/Location Div(sion Stack Meter Temp (F) l.~ Noale Measurements , ~ 6 p . ~ LO Temp Check re-Test Set POSt-Test Set Sample Date ~ Static Press (in H2O) — ~ 3 ~j ~J Avg Noale Dia (in) ~ ~ 6 • ~/ Meter Box Temp Baro. Press (in Hg) Area of Stack (ftz) , Q~ Reference Temp Operator Ambient Temp (°F) ~ ~ Sample Time `~ (~ ,/ PasslFail (+/- 2°~ Pass /Fail Pass /Fail Total Traverse Pts ~ a Temp Change Response ~ yes / no yes / no ~~r~~~- ~~—~~ ~ ~ ~ ~ ~ i ~~~~— ~~-~~~Iti•1~~~ • ~~~~~~~_'~~ ~~-~ I ~~~~~~~~~- ~~~ a,vg uena r ( ,vvg uerca ry a. ~ ~,''Ib J Ava Sart Delta P Avo Sart Dei t i oral vowme~ (b ,vvg i s ~~~ nments: J ~lr ~ ~~~~13~ ✓J ,vvg i m J rvun~nnax rvunlnnax nnax rwax vac nnin~rv~ax ~~. d <<u~~~~ te6~~~~( sq g H~ly~ EPA Method 0010 from EPA SW- 46 (~ Q'~ ~~~ 29 ISOHINETIC FIELD DATA SHEET EPA Method 0010 - HFPO Dimer Acid Page ~ or '1 Client Chemours Stack Conditions Meter Box ID qq~ ~ K Factor ~ 6 W.O.# 15418.002.018 Assumed Actual Meter Box Y Project ID Chemours %Moisture ~ Meter Box Del H (, g"j ► ~ Init181 Mid-Point FIn81 Mode/Source ID Division Impinger Vol (ml) Probe ID /Length H q 4 ~ 6~ Sample Train (ft3) ~ Oo ~ jj ~ Samp. Loc. ID STK Silica gel (g) —~ Probe Material Boro Leak Check @ (in Hg) ~ Run No.ID 2 CO2, % by Vol Pitot /Thermocouple ID Pitot leak check good ~/ no e / no yes / np Test Method ID M0010 02, °/ by Vol ~ q Pitot Coefficient 0.84 Pitot Inspection good ! no e ! no yes / no Date ID S /L NOV2019 Temperature (°F) MeterT m "F ~~ Noale ID Method 3 S stem ood Y 9 Yes / no yes / no yes / no ource ovation Diviswn Stack e P ( ) Noale Measurements ,I b~ . ~ 60 . ~ (,~ Temp Check Pre-Test et Post-Test Set Sample Date ~ ~ 'a — ( Static Press (in Hz0) ,. —~ '3 ,/Avg Noale Dia (in) . ( ~/ Meter Box Temp Baro. Press (in Hg) Q. Area of Stack (ft2) Reference Temp Operator Ambient Temp (°F) SQ Sample Time _.q.~--`~j Pass/Fail (+/- 2°) Pass /Fail Pass /Fail Total Traverse Pts ~ ;~ Temp Change Response ; yes / no ves ! no • —~~~~ ~ • ~~~~--- ~~~ ~~—~~ ~ r ~ ~~~~~- 1,.~,__.2~ :000~5~ Avg Sgrt Delta P Avg Sgrt Del t-#~`.~~5' ~~~~~~~ ................. ,,•y •~ r.. ~.~~~~~~~a~ miuimnn man max vac mnuPnax ~~. flg~ ~1q,~1 l..o ,~.-- QOIl2(.o g3(tl5 (a~ (v ~I`b~(o0 Comments: EPA Method 0010 from EPA SW-846 ,_ t~~~~_~-30 SAMPLE RECOVERY FIELD DATA EPA Method 0010 - HFPO Diener Acid Client Location/Plant Chemours Fayetteville, NC W.O. # Source &Location 15418.002.018 Division Stack Run No. 1 Sample Date /` , ~ f ~ Recovery Date ~l Sample I.D. Chemours -Division - STK - 1 - M0010 - Analyst ~_ Filter Number Impin er 1 2 3 4 5 6 7 Imp.Total 8 Total Contents Empty HPLC H2O HPLC H2O Silica Gel Final ~ ~ ~ ~ ~ , ~~ + ; a Initial (7 goo goo soo Gain ~ ~ v ~ ,, Impinger Color ~~ ~j ~„~ j~ Labeled? ., Silica Gel Condition Sealed? Run No. 2 Sample Dafe ~~ /~Z ~~ Recovery Date ~~ y~ Sample I.D. Chemours -Division - STK - 2 - M0010 - Analyst ~ Filter Number Impin er 1 2 3 4 5 6 7 Imp.Total 8 Total Contents Empty HPLC H2O HPLC H2O Silica Gel Final ~ ~ / - Q a /r, ~~ 7 Initial ~ goo goo soo Gain ~ ~ ~ f ~,% p~ . Impinger Color ~' G~ ~ ~ Labeled? ~~ '~ ' ~ l Silica Gel Condition Vt.• ~ Sealed? 3 Run No. 3 Sample Date Recovery Date Sample I.D. Chemours -Division - STK - 3 - M0010 - Analyst Filter Number Impin er 1 2 3 4 5 6 7 Imp.Total 8 Total Contents Empty HPLC H2O HPLC H2O Silica Gel Final Initial goo goo soo Gain Impinger Color Labeled? Silica Gel Condition Sealed? Check COC for Sample IDs of Media Blanks `~~~J~ ~~~~~ ~~ 31 1/21/202010:28 AM 112219 Div Stack MM18 TEST DATA Test run number 1 2 3 Location Division Stack Division Stack Division Stack Test date 11/22/19 11/22/19 12/4/19 Test time period 0826-1022 1139-1318 0955-1125 Operator WF WF KS SAMPLING DATA Duration, minutes 84 78 90 Average dry gas meter press. in. H2O 3.41 3.56 5.00 Average dry gas meter temp. deg. F 54.9 66.00 54.50 Average absolute meter temp. deg. R 514.9 526.0 514.5 Sample vol. at meter cond., dcl 143.580 147.394 159.313 Meter box calibration, Y 0.9996 0.9996 1.0140 Barometric pressure, in. Hg 30.02 30.02 30.12 Sample volume, dscl (1)148.843 149.624 168.860 Sample volume, dscf (1)5.256 5.283 5.963 VOLUMETRIC FLOW RATE Avg. gas stream volumetric flow, dscf/min.33,787 28,485 31,136 (1) Standard conditions = 68 deg. F. (20 deg. C.) and 29.92 inches Hg (760mm Hg). CHEMOURS-FAYETTEVILLE, NC INPUTS FOR EPA MM18 TARGET COMPOUND CALCULATIONS DIVISION STACK 32 FIELD DATA SHEET Client Chemours Run No. W.O.# 15418.002.018 Test Method Project ID CHEM-F Date Mode/Source ID Division Baro. Press (in Hg) Samp. Loc. Stack Ambient Temp (°F) Source Division Stk Operator Sample Time Comments: Initial Probe Leak check: Final Probe Leak check: MM 1 S - HFPO Diener Acid Page ~ of ~ 1 Meter Box ID Modified M18 Meter Box Y Q ' G Nov. 2019 Probe ID/Length Leak Check @ (in Hg) (~,~~ ~„~~~ I I (~,Q (1~,,.~ ~ ,3Q, (~Z Probe Material Pitot leak check good yec.Lpry yes / no ..y~uc_L.aw • ~ ~~- ~~ ~~ ' ~ ~~ ~ --~ ------ -- Avg Delta H Total Volume / Avg Tm Max Temp Max Vac Max Temp 33 FIELD DATA SHEET Client W .O.# Project ID Mode/Source ID Samp. Loc. Source Comments: Chemours Run No. 15418.002.018 Test Method CHEM-F Date Division Baro. Press (in Hg) Stack Ambient Temp (°F) Division Stk Operator Sample Time Initial Probe Leak check: Final Probe Leak check: MM 18 - HFPO Dimer Acid 2 Meter Box ID ~0 Modified M18 Meter Box Y G~ , ,~+ Nov. 2019 Probe ID/Length Leak Check @ (in Hg) ~(~ , p ~ Probe Material Pitot Teak check good da W ~~ ~« Page ~ of p.JCH ~~~ yes / no yes ! no ~~~~ r ~~~rl~~~f~r~~~~ ~ ~ ~m~ - ~'c~1 ~~~P~~~~i~ ' ' ~ ~m~ ~~~c~~~~!~l~~~:~ ~ m. ~ ~"_-1' ~~:•s~s7xix~~ra.x a .. Hvg ueita n ~ i otai volume 3.5~ ~ I~1,~~ Hvg i m Hoax I emp Max Vac Max Temp l~ ~ 34 ~~v S~~- ~'"Ll~, SAMPLE RECOVERY FIELD DATA Client "r~i?'4 ~`~, W.O. # Location/Plant ~ ~,}~ „— r Source &Location J I~ Run No. Sample Date ~~~''~ /~ ` Recovery Date > ~ Sample I.D. ~ ~'~(~ Analyst ~ ~ Filter Number Im in er 1 2 3 4 5 6 7 Im .Total 8 Total Contents Silica Gel Final ~~ ~~j~zj. ~. ~~%7i ~ ~. ~ `?~'. 1 Initial ~ G~ ; ~~ ~ ~ :~~ ! ~ ~ ~ utJ,~ ~d ca~~ 'I3 ~-; -_~ ,, i ImpingerColor ~A~j~=~~ Labeled? —~ Silica Gel Condition Sealed? Run No. ~ Sample Date ~ ~~ Recovery Date /~"~~ Sample I.D. Analyst Filter Number ~~ Im in er 1 2 3 4 5 6 7 Imp.Totai 8 Total Contents Silica Gel Final ~~r ~ ' 1o~i'(~ ~'0~ '~ ~Os Initial ~ rs b~~~~ ~~~' ~~ Q ~~ f Gain ~s d d /,. Impinger Color ~j (./ ~ Labeled? Silica Gel Condition Sealed? Run No. lf,~ Sample Dated ~ , ~ ! Recovery Date ~~ 't—/ Sample I.D. ~ Analyst Filter Number Im in er 1 2 3 4 5 6 7 Imp.Total 8 Total Contents Silica Gel Final ~ t ~~r ~ b s ~ ~ 0 ~1 ~~/~ b~ initial ~ ~ = ~ v b ~~> ~ ~ ~~, - ~j Gain ~ 4 ~G(~j.~ ~ Impinger Color -~ .~. La~ed? Silica Gel Condition Sealed? Check COC for Sample IDs of Media Blanks ~ ~~ /~ ~~ 35 FIELD DATA SHEET MM 18 Client Chemours Run No. 1 Meter Box ID W.O.# 15418.002.018 Test Method Modified M18 Meter Box Y D I~{ Project ID CHEM-F Date ~'I Dec. 2019 Probe ID/Length Leak Check @ (in Hg) Mode/Source ID VE NoRh Baro. Press (in Hg) 3~~ Probe Mate~ai Pitot leak check good Samp. Loc. Stack Ambient Temp (°F) O Source Division Operator f Sample Time ~~ M;~? Comments: Initial Probe Leak check: ~~! a. ~~p►i~ Final Probe Leak check: ~,~i y?, ~r~~~'p Page ~ of yes / no yes / no yes / no a~ ~a~~~ o~r~~~.~ ~~~ ~~~~a~ ~~~ ~ ~~~~ I ~~ ~~ " ~ ~ ~~~~~~►'~~~ ~~~~em~~ --- -- ~~- --~ -- ~~-..,~.. Avg Delta HJ Total Volume Avg Tm Max'Temp Max Vac Max Temp 36 SAMPLE RECOVERY FIELD DATA Client ~ "~ ►'lam C~1'` s W.O. # l~ 4 l~ >~ti~-=~~. ~vi LocatioNPlant r-c~, t~ Source &Location ~ C JV~3c- — ~ y~~ ~,~ 5 Run No. 3 Sample Date Iz-~ ~-1 '— j ~ Recovery Date ~~9 Sample I.D. Analyst Filter Number i? l~ Im in er 1 2 3 4 5 6 7 Im .Total 8 Total Contents Silica Gel Final 4 ~ ~ G~. U ~,O ~ ~ C1 ~~ 3. ~ _ Initial ~ ~?, ~ C1~ • ~- L ~c3~-~j ~, , 13,~ Gain C~ ~ d + t ~ ~ ~L O ~ ~ ~ v' r ! C7 r Impinger Color ______~~ Labeled? r Silica Gel Condition +'~U Sealed? Run No. Sample Date Recovery Date Sample I.D. Analyst Filter Number Im in er 1 2 3 4 5 6 7 Imp.Total 8 Total Contents ~ Silica Gel Final Initial ~~.~, ~~.0 607,`? ~C~, ~~ ~~ , ~ f.3 ~3 Gain Impinger Color Labeled? Silica Gel Condition Sealed? Run No. Sample Date Recovery Date Sample I.D. Analyst Filter Number Im in er 1 2 3 4 5 6 7 Imp.Total 8 Total Contents Silica Gel Final Initial Gain Impinger Color Labeled? Silica Gel Condition Sealed? Check COC for Sample IDs of Media Blanks ~` .k3aT~AF c . 37 IASDATA\CHEMOURS\15418.002.018\DIVISION REPORT 11 2019-AMD 1/21/2020 APPENDIX C LABORATORY ANALYTICAL REPORT 38 ANALYTICAL REPORT Job Number: 140-17458-1 Job Description: VEN Stack - M0010 Contract Number: LBIO-67048 For: Chemours Company FC, LLC The c/o AECOM Sabre Building, Suite 300 4051 Ogletown Road Newark, DE 19713 Attention: Michael Aucoin _____________________________________________ Approved for release. Courtney M Adkins Project Manager II 12/10/2019 3:07 PM Courtney M Adkins, Project Manager II 5815 Middlebrook Pike, Knoxville, TN, 37921 (865)291-3000 courtney.adkins@testamericainc.com 12/10/2019 This report may not be reproduced except in full, and with written approval from the laboratory. For questions please contact the Project Manager at the e-mail address or telephone number listed on this page. The test results in this report relate only to the samples as received by the laboratory and will meet all requirements of the methodology, with any exceptions noted. This report shall not be reproduced except in full, without the express written approval of the laboratory. All questions should be directed to the Eurofins TestAmerica Project Manager. This report has been electronically signed and authorized by the signatory. Electronic signature is intended to be the legally binding equivalent of a traditionally handwritten signature. Eurofins TestAmerica, Knoxville 5815 Middlebrook Pike, Knoxville, TN 37921 Tel (865) 291-3000 Fax (865) 584-4315 www.testamericainc.com 12/10/2019Page 1 of 21339 Table of Contents Cover Title Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Data Summaries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Method Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Sample Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Case Narrative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 QC Association . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 Client Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 Default Detection Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 Surrogate Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 QC Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 Chronicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 Certification Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22 Manual Integration Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24 Organic Sample Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 LCMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25 8321A_HFPO_Du . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25 8321A_HFPO_Du QC Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26 8321A_HFPO_Du Sample Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32 Standards Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40 8321A_HFPO_Du ICAL Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40 8321A_HFPO_Du CCAL Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63 Raw QC Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75 8321A_HFPO_Du Tune Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75 8321A_HFPO_Du Blank Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80 8321A_HFPO_Du LCS/LCSD Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92 12/10/2019Page 2 of 21340 Table of Contents 8321A_HFPO_Du Run Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105 8321A_HFPO_Du Prep Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .107 Method DV-LC-0012 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .114 Method DV-LC-0012 QC Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .115 Method DV-LC-0012 Sample Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .123 Standards Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .147 Method DV-LC-0012 CCAL Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .147 Raw QC Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .165 Method DV-LC-0012 Tune Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .165 Method DV-LC-0012 Blank Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .170 Method DV-LC-0012 LCS/LCSD Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .182 Method DV-LC-0012 Run Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .198 Method DV-LC-0012 Prep Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .200 Shipping and Receiving Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . 206 Client Chain of Custody . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .207 12/10/2019Page 3 of 21341 Definitions/Glossary Job ID: 140-17458-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - M0010 Qualifiers LCMS Qualifier Description *LCS or LCSD is outside acceptance limits. Qualifier B Compound was found in the blank and sample. J Result is less than the RL but greater than or equal to the MDL and the concentration is an approximate value. Glossary These commonly used abbreviations may or may not be present in this report. ¤Listed under the "D" column to designate that the result is reported on a dry weight basis Abbreviation %R Percent Recovery CFL Contains Free Liquid CNF Contains No Free Liquid DER Duplicate Error Ratio (normalized absolute difference) Dil Fac Dilution Factor DL Detection Limit (DoD/DOE) DL, RA, RE, IN Indicates a Dilution, Re-analysis, Re-extraction, or additional Initial metals/anion analysis of the sample DLC Decision Level Concentration (Radiochemistry) EDL Estimated Detection Limit (Dioxin) LOD Limit of Detection (DoD/DOE) LOQ Limit of Quantitation (DoD/DOE) MDA Minimum Detectable Activity (Radiochemistry) MDC Minimum Detectable Concentration (Radiochemistry) MDL Method Detection Limit ML Minimum Level (Dioxin) NC Not Calculated ND Not Detected at the reporting limit (or MDL or EDL if shown) PQL Practical Quantitation Limit QC Quality Control RER Relative Error Ratio (Radiochemistry) RL Reporting Limit or Requested Limit (Radiochemistry) RPD Relative Percent Difference, a measure of the relative difference between two points TEF Toxicity Equivalent Factor (Dioxin) TEQ Toxicity Equivalent Quotient (Dioxin) Eurofins TestAmerica, Knoxville 12/10/2019Page 4 of 21342 Method Summary Job ID: 140-17458-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - M0010 Method Method Description LaboratoryProtocol SW8468321AHFPO-DA TAL DEN SW8468321APFOA and PFOS TAL DEN TAL SOPNoneLeaching Procedure TAL DEN TAL SOPNoneLeaching Procedure for Condensate TAL DEN TAL SOPNoneLeaching Procedure for XAD TAL DEN Protocol References: SW846 = "Test Methods For Evaluating Solid Waste, Physical/Chemical Methods", Third Edition, November 1986 And Its Updates. TAL SOP = TestAmerica Laboratories, Standard Operating Procedure Laboratory References: TAL DEN = Eurofins TestAmerica, Denver, 4955 Yarrow Street, Arvada, CO 80002, TEL (303)736-0100 Eurofins TestAmerica, Knoxville 12/10/2019Page 5 of 21343 Sample Summary Job ID: 140-17458-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - M0010 Lab Sample ID Client Sample ID ReceivedCollectedMatrix Asset ID 140-17458-1 G-2577,2578 DIV VEN STACK R1 M0010 FH Air 11/22/19 00:00 11/25/19 08:00 140-17458-2 G-2579,2580,2582 DIV VEN STACK R1 M0010 BH Air 11/22/19 00:00 11/25/19 08:00 140-17458-3 G-2581 DIV VEN STACK R1 M0010 IMPINGERS 1,2&3 COND Air 11/22/19 00:00 11/25/19 08:00 140-17458-4 G-2583 DIV VEN STACK R1 M0010 BREAKTHROUGH XAD-2 RESIN TUBE Air 11/22/19 00:00 11/25/19 08:00 140-17458-5 G-2584,2585 DIV VEN STACK R2 M0010 FH Air 11/22/19 00:00 11/25/19 08:00 140-17458-6 G-2586,2587,2589 DIV VEN STACK R2 M0010 BH Air 11/22/19 00:00 11/25/19 08:00 140-17458-7 G-2588 DIV VEN STACK R2 M0010 IMPINGERS 1,2&3 COND Air 11/22/19 00:00 11/25/19 08:00 140-17458-8 G-2590 DIV VEN STACK R2 M0010 BREAKTHROUGH XAD-2 RESIN TUBE Air 11/22/19 00:00 11/25/19 08:00 Eurofins TestAmerica, Knoxville 12/10/2019Page 6 of 21344 Job Narrative 140-17458-1 Sample Receipt The samples were received on November 25, 2019 at 8:00 AM in good condition and properly preserved. The temperature of the cooler at receipt was 1.6º C. Quality Control and Data Interpretation Unless otherwise noted, all holding times, and QC criteria were met and the test results shown in this report meet all applicable NELAC requirements. Method 0010/Method 3542 Sampling Train Preparation Train fractions were extracted and prepared for analysis in TestAmerica’s Knoxville laboratory. Extracts and condensate samples were forwarded to the Denver laboratory for HFPO-DA analysis. All results are reported in “Total ug” per sample. LCMS Method 8321A: The following samples were inadvertently spiked with a native solution of HFPO-DA rather than the isotope dilution internal standard prior to extraction in the Knoxville Laboratory. · DIV VEN Stack R1 FH · DIV VEN Stack R1 BH · DIV VEN R1 Breakthrough · DIV VEN Stack R2 FH · DIV VEN Stack R2 BH · DIV VEN R2 Breakthrough As a result, these samples received a relatively small fortification of the native HFPO-DA, and no labeled IDA as typically applied. Upon discovery of the processing issue, the IDAs were post spiked onto the extracted samples which were then re-analyzed to acquire the Total HFPO-DA content in the samples. The spiked amount of native HFPO-DA was subsequently subtracted from the Total HFPO-DA, and the corrected concentration is reported in with the data set below. Please note that under these conditions, the affected samples are not corrected for extraction losses through isotope dilution internal standard data reduction. However, the HFPO-DA concentrations are accurate and useful for their intended purpose. Method 8321A: The laboratory control sample (LCS) and / or laboratory control sample duplicate (LCSD) for preparation batch 280-478940 and analytical batch 280-479928 recovered outside control limits for the following analytes: HFPO. These analytes were biased high in the LCS and were not detected in the associated samples; therefore, the data have been reported. No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page. Organic Prep No analytical or quality issues were noted, other than those described in the Definitions/Glossary page. 12/10/2019Page 7 of 21345 Chemours VES Carbon Bed Outlet Test Analytical Report TestAmerica Job No. 140-17458-1 December 10, 2019 O:\Users Folders\AdkinsC\Project Documents\Special Reporting\Chemours Corrected Values\Fayetteville\Chemours Corrected Results HFPO-DA_DIV VEN Stack_12102019.docx Created on 01/30/2018 Last edited on 12/10/2019 3:02 PM The following samples were inadvertently spiked with a native solution of HFPO-DA prior to extraction in the Knoxville laboratory: DIV VEN Stack R1 FH DIV VEN Stack R1 BH DIV VEN R1 Breakthrough DIV VEN Stack R2 FH DIV VEN Stack R2 BH DIV VEN R2 Breakthrough The HFPO-DA results presented below have been corrected to remove the laboratory contribution from the final result. TALS ID Client ID HFPO-DA Result (ug/sample) HFPO-DA Added in the lab (ug/sample) HFPO-DA Corrected Result (ug/sample) 140-17458-1 DIV VEN Stack R1 FH 9.86 2 7.86 140-17458-2 DIV VEN Stack R1 BH 21.3 7 14.3 140-17458-4 DIV VEN R1 Breakthrough 2.30 4 ND 140-17458-5 DIV VEN Stack R2 FH 6.58 2.5 4.08 140-17458-6 DIV VEN Stack R2 BH 36.3 6.5 29.8 140-17458-8 DIV VEN R2 Breakthrough 2.19 4 ND 12/10/2019Page 8 of 21346 QC Association Summary Job ID: 140-17458-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - M0010 LCMS Analysis Batch: 464589 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air 8321ADLCK 280-464589/13 Lab Control Sample Total/NA Prep Batch: 478940 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air None140-17458-1 G-2577,2578 DIV VEN STACK R1 M0010 FH Total/NA Air None140-17458-5 G-2584,2585 DIV VEN STACK R2 M0010 FH Total/NA Air NoneMB 280-478940/14-A Method Blank Total/NA Air NoneMB 280-478940/1-A Method Blank Total/NA Air NoneLCS 280-478940/2-A Lab Control Sample Total/NA Air NoneLCSD 280-478940/3-A Lab Control Sample Dup Total/NA Prep Batch: 478993 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air None140-17458-3 G-2581 DIV VEN STACK R1 M0010 IMPINGERS 1,2&3 CONDTotal/NA Air None140-17458-7 G-2588 DIV VEN STACK R2 M0010 IMPINGERS 1,2&3 CONDTotal/NA Air NoneMB 280-478993/14-A Method Blank Total/NA Air NoneMB 280-478993/1-A Method Blank Total/NA Air NoneLCS 280-478993/2-A Lab Control Sample Total/NA Air NoneLCSD 280-478993/3-A Lab Control Sample Dup Total/NA Prep Batch: 479245 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air None140-17458-2 G-2579,2580,2582 DIV VEN STACK R1 M0010 BHTotal/NA Air None140-17458-4 G-2583 DIV VEN STACK R1 M0010 BREAKTHROUGH XAD-2 RESIN TUBETotal/NA Air None140-17458-6 G-2586,2587,2589 DIV VEN STACK R2 M0010 BHTotal/NA Air None140-17458-8 G-2590 DIV VEN STACK R2 M0010 BREAKTHROUGH XAD-2 RESIN TUBETotal/NA Air NoneMB 280-479245/1-A Method Blank Total/NA Air NoneLCS 280-479245/2-A Lab Control Sample Total/NA Air NoneLCSD 280-479245/3-A Lab Control Sample Dup Total/NA Analysis Batch: 479814 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air 8321A 478993140-17458-3 G-2581 DIV VEN STACK R1 M0010 IMPINGERS 1,2&3 CONDTotal/NA Air 8321A 478993140-17458-7 G-2588 DIV VEN STACK R2 M0010 IMPINGERS 1,2&3 CONDTotal/NA Air 8321A 478993MB 280-478993/14-A Method Blank Total/NA Air 8321A 478993MB 280-478993/1-A Method Blank Total/NA Air 8321A 478993LCS 280-478993/2-A Lab Control Sample Total/NA Air 8321A 478993LCSD 280-478993/3-A Lab Control Sample Dup Total/NA Analysis Batch: 479928 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air 8321A 478940140-17458-1 G-2577,2578 DIV VEN STACK R1 M0010 FH Total/NA Air 8321A 478940140-17458-5 G-2584,2585 DIV VEN STACK R2 M0010 FH Total/NA Air 8321A 478940MB 280-478940/14-A Method Blank Total/NA Air 8321A 478940MB 280-478940/1-A Method Blank Total/NA Air 8321A 478940LCS 280-478940/2-A Lab Control Sample Total/NA Air 8321A 478940LCSD 280-478940/3-A Lab Control Sample Dup Total/NA Analysis Batch: 479929 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air 8321A 479245140-17458-2 G-2579,2580,2582 DIV VEN STACK R1 M0010 BHTotal/NA Eurofins TestAmerica, Knoxville 12/10/2019Page 9 of 21347 QC Association Summary Job ID: 140-17458-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - M0010 LCMS (Continued) Analysis Batch: 479929 (Continued) Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air 8321A 479245140-17458-4 G-2583 DIV VEN STACK R1 M0010 BREAKTHROUGH XAD-2 RESIN TUBETotal/NA Air 8321A 479245140-17458-6 G-2586,2587,2589 DIV VEN STACK R2 M0010 BHTotal/NA Air 8321A 479245140-17458-8 G-2590 DIV VEN STACK R2 M0010 BREAKTHROUGH XAD-2 RESIN TUBETotal/NA Air 8321A 479245MB 280-479245/1-A Method Blank Total/NA Air 8321A 479245LCS 280-479245/2-A Lab Control Sample Total/NA Air 8321A 479245LCSD 280-479245/3-A Lab Control Sample Dup Total/NA Eurofins TestAmerica, Knoxville 12/10/2019Page 10 of 21348 Client Sample Results Job ID: 140-17458-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - M0010 Lab Sample ID: 140-17458-1Client Sample ID: G-2577,2578 DIV VEN STACK R1 M0010 FH Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Air Train Method: 8321A - PFOA and PFOS RL MDL HFPO-DA 9.86 B *0.100 0.0108 ug/Sample 11/27/19 08:04 12/08/19 09:15 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 13C3 HFPO-DA 133 50 -200 11/27/19 08:04 12/08/19 09:15 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 140-17458-2Client Sample ID: G-2579,2580,2582 DIV VEN STACK R1 M0010 BH Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Air Train Method: 8321A - PFOA and PFOS RL MDL HFPO-DA 21.3 B 0.350 0.0700 ug/Sample 12/02/19 11:25 12/08/19 09:55 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 13C3 HFPO-DA 116 50 -200 12/02/19 11:25 12/08/19 09:55 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 140-17458-3Client Sample ID: G-2581 DIV VEN STACK R1 M0010 IMPINGERS 1,2&3 COND Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Air Train Method: 8321A - HFPO-DA RL MDL HFPO-DA 0.145 J 0.212 0.0108 ug/Sample 11/27/19 12:36 12/06/19 12:41 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 13C3 HFPO-DA 116 50 -200 11/27/19 12:36 12/06/19 12:41 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 140-17458-4Client Sample ID: G-2583 DIV VEN STACK R1 M0010 BREAKTHROUGH XAD-2 RESIN TUBE Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Air Train Method: 8321A - PFOA and PFOS RL MDL HFPO-DA 2.30 B 0.200 0.0400 ug/Sample 12/02/19 11:25 12/08/19 09:58 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 13C3 HFPO-DA 126 50 -200 12/02/19 11:25 12/08/19 09:58 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Eurofins TestAmerica, Knoxville 12/10/2019Page 11 of 21349 Client Sample Results Job ID: 140-17458-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - M0010 Lab Sample ID: 140-17458-5Client Sample ID: G-2584,2585 DIV VEN STACK R2 M0010 FH Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Air Train Method: 8321A - PFOA and PFOS RL MDL HFPO-DA 6.58 B *0.125 0.0135 ug/Sample 11/27/19 08:04 12/08/19 09:19 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 13C3 HFPO-DA 136 50 -200 11/27/19 08:04 12/08/19 09:19 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 140-17458-6Client Sample ID: G-2586,2587,2589 DIV VEN STACK R2 M0010 BH Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Air Train Method: 8321A - PFOA and PFOS RL MDL HFPO-DA 36.3 B 0.325 0.0650 ug/Sample 12/02/19 11:25 12/08/19 10:01 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 13C3 HFPO-DA 100 50 -200 12/02/19 11:25 12/08/19 10:01 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 140-17458-7Client Sample ID: G-2588 DIV VEN STACK R2 M0010 IMPINGERS 1,2&3 COND Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Air Train Method: 8321A - HFPO-DA RL MDL HFPO-DA ND 0.196 0.00999 ug/Sample 11/27/19 12:36 12/06/19 12:44 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 13C3 HFPO-DA 121 50 -200 11/27/19 12:36 12/06/19 12:44 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 140-17458-8Client Sample ID: G-2590 DIV VEN STACK R2 M0010 BREAKTHROUGH XAD-2 RESIN TUBE Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Air Train Method: 8321A - PFOA and PFOS RL MDL HFPO-DA 2.19 B 0.200 0.0400 ug/Sample 12/02/19 11:25 12/08/19 10:04 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 13C3 HFPO-DA 109 50 -200 12/02/19 11:25 12/08/19 10:04 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Eurofins TestAmerica, Knoxville 12/10/2019Page 12 of 21350 Default Detection Limits Client: Chemours Company FC, LLC The Job ID: 140-17458-1 Project/Site: VEN Stack - M0010 Method: 8321A - HFPO-DA Prep: None 0.00250HFPO-DA ug/Sample Analyte UnitsMDLRL 0.00128 Method: 8321A - PFOA and PFOS Prep: None 0.0250HFPO-DA ug/Sample Analyte UnitsMDLRL 0.00270 0.100HFPO-DA ug/Sample0.0200 Eurofins TestAmerica, Knoxville 12/10/2019Page 13 of 21351 ANALYTICAL REPORT Job Number: 140-17461-1 Job Description: VEN Stack - MM-18 Contract Number: LBIO-67048 For: Chemours Company FC, LLC The c/o AECOM Sabre Building, Suite 300 4051 Ogletown Road Newark, DE 19713 Attention: Michael Aucoin _____________________________________________ Approved for release. Courtney M Adkins Project Manager II 12/23/2019 3:00 PM Courtney M Adkins, Project Manager II 5815 Middlebrook Pike, Knoxville, TN, 37921 (865)291-3000 courtney.adkins@testamericainc.com 12/23/2019 This report may not be reproduced except in full, and with written approval from the laboratory. For questions please contact the Project Manager at the e-mail address or telephone number listed on this page. The test results in this report relate only to the samples as received by the laboratory and will meet all requirements of the methodology, with any exceptions noted. This report shall not be reproduced except in full, without the express written approval of the laboratory. All questions should be directed to the Eurofins TestAmerica Project Manager. This report has been electronically signed and authorized by the signatory. Electronic signature is intended to be the legally binding equivalent of a traditionally handwritten signature. Eurofins TestAmerica, Knoxville 5815 Middlebrook Pike, Knoxville, TN 37921 Tel (865) 291-3000 Fax (865) 584-4315 www.testamericainc.com 12/23/2019Page 1 of 89452 Table of Contents Cover Title Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Data Summaries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Method Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Sample Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Case Narrative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 QC Association . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 Client Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 Default Detection Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43 Surrogate Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45 QC Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46 Chronicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54 Certification Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63 Manual Integration Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64 Organic Sample Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 GC/MS VOA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77 Method 8260B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77 Method 8260B QC Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78 Method 8260B Sample Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93 Standards Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .287 Method 8260B ICAL Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .287 Method 8260B CCAL Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .389 Raw QC Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .437 Method 8260B Tune Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .437 Method 8260B Blank Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .453 Method 8260B LCS/LCSD Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .461 12/23/2019Page 2 of 89453 Table of Contents Method 8260B MS/MSD Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .474 Method 8260B Run Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .482 Method 8260B Prep Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .495 HPLC/IC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .498 Method 9056 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .498 Method 9056 QC Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .499 Method 9056 Sample Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .502 Standards Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .538 Method 9056 ICAL Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .538 Method 9056 CCAL Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .565 Raw QC Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .612 Method 9056 Blank Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .612 Method 9056 LCS/LCSD Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .638 Method 9056 MS/MSD Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .644 Method 9056 Run Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .650 Method 9056 Prep Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .664 Method 9056A Total Halogens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .667 Method 9056A Total Halogens QC Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .668 Method 9056A Total Halogens Sample Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .676 Standards Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .715 Method 9056A Total Halogens ICAL Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .715 Method 9056A Total Halogens CCAL Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .740 Raw QC Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .781 Method 9056A Total Halogens Blank Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .781 Method 9056A Total Halogens LCS/LCSD Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .817 Method 9056A Total Halogens MS/MSD Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .831 12/23/2019Page 3 of 89454 Table of Contents Method 9056A Total Halogens Run Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .839 Method 9056A Total Halogens Prep Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .855 Inorganic Sample Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 864 General Chemistry Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .864 Gen Chem Cover Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .865 Gen Chem Sample Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .866 Gen Chem QC Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .878 Gen Chem ICV/CCV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .878 Gen Chem Duplicates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .879 Gen Chem MDL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .880 Gen Chem Analysis Run Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .881 Gen Chem Prep Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .882 Gen Chem Raw Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .884 Shipping and Receiving Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . 886 Client Chain of Custody . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .887 12/23/2019Page 4 of 89455 Definitions/Glossary Job ID: 140-17461-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Qualifiers GC/MS VOA Qualifier Description *LCS or LCSD is outside acceptance limits. Qualifier H Sample was prepped or analyzed beyond the specified holding time GC/MS VOA TICs Qualifier Description H Sample was prepped or analyzed beyond the specified holding time Qualifier J Indicates an Estimated Value for TICs N Presumptive evidence of material. T Result is a tentatively identified compound (TIC) and an estimated value. HPLC/IC Qualifier Description J Result is less than the RL but greater than or equal to the MDL and the concentration is an approximate value. Qualifier General Chemistry Qualifier Description HF Field parameter with a holding time of 15 minutes. Test performed by laboratory at client's request. Qualifier Glossary These commonly used abbreviations may or may not be present in this report. ¤Listed under the "D" column to designate that the result is reported on a dry weight basis Abbreviation %R Percent Recovery CFL Contains Free Liquid CNF Contains No Free Liquid DER Duplicate Error Ratio (normalized absolute difference) Dil Fac Dilution Factor DL Detection Limit (DoD/DOE) DL, RA, RE, IN Indicates a Dilution, Re-analysis, Re-extraction, or additional Initial metals/anion analysis of the sample DLC Decision Level Concentration (Radiochemistry) EDL Estimated Detection Limit (Dioxin) LOD Limit of Detection (DoD/DOE) LOQ Limit of Quantitation (DoD/DOE) MDA Minimum Detectable Activity (Radiochemistry) MDC Minimum Detectable Concentration (Radiochemistry) MDL Method Detection Limit ML Minimum Level (Dioxin) NC Not Calculated ND Not Detected at the reporting limit (or MDL or EDL if shown) PQL Practical Quantitation Limit QC Quality Control RER Relative Error Ratio (Radiochemistry) RL Reporting Limit or Requested Limit (Radiochemistry) RPD Relative Percent Difference, a measure of the relative difference between two points TEF Toxicity Equivalent Factor (Dioxin) TEQ Toxicity Equivalent Quotient (Dioxin) Eurofins TestAmerica, Knoxville 12/23/2019Page 5 of 89456 Method Summary Job ID: 140-17461-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Method Method Description LaboratoryProtocol SW8468260BVolatile Organic Compounds (GC/MS)TAL KNX SW8469056Anions, Ion Chromatography TAL KNX SW8469041ApH TAL KNX SW8465050Bomb Preparation Method for Solid Waste TAL KNX NoneMeOH Prep Methanol Impinger Preparation TAL KNX Protocol References: None = None SW846 = "Test Methods For Evaluating Solid Waste, Physical/Chemical Methods", Third Edition, November 1986 And Its Updates. Laboratory References: TAL KNX = Eurofins TestAmerica, Knoxville, 5815 Middlebrook Pike, Knoxville, TN 37921, TEL (865)291-3000 Eurofins TestAmerica, Knoxville 12/23/2019Page 6 of 89457 Sample Summary Job ID: 140-17461-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Lab Sample ID Client Sample ID ReceivedCollectedMatrix Asset ID 140-17461-1 Y-2964 R1 VEN DIV STACK MM18 IMPINGER #1 Air 11/22/19 00:00 11/25/19 08:00 140-17461-2 Y-2965 R1 VEN DIV STACK MM18 IMPINGER #2 Air 11/22/19 00:00 11/25/19 08:00 140-17461-3 Y-2966 R1 VEN DIV STACK MM18 IMPINGER #3 Air 11/22/19 00:00 11/25/19 08:00 140-17461-4 Y-2967 R1 VEN DIV STACK MM18 IMPINGER #4 Air 11/22/19 00:00 11/25/19 08:00 140-17461-5 Y-2968 R1 VEN DIV STACK MM18 IMPINGER #5 Air 11/22/19 00:00 11/25/19 08:00 140-17461-6 Y-2969 R1 VEN DIV STACK MM18 IMPINGER #6 Air 11/22/19 00:00 11/25/19 08:00 140-17461-7 Y-2970 R2 VEN DIV STACK MM18 IMPINGER #1 Air 11/22/19 00:00 11/25/19 08:00 140-17461-8 Y-2971 R2 VEN DIV STACK MM18 IMPINGER #2 Air 11/22/19 00:00 11/25/19 08:00 140-17461-9 Y-2972 R2 VEN DIV STACK MM18 IMPINGER #3 Air 11/22/19 00:00 11/25/19 08:00 140-17461-10 Y-2973 R2 VEN DIV STACK MM18 IMPINGER #4 Air 11/22/19 00:00 11/25/19 08:00 140-17461-11 Y-2974 R2 VEN DIV STACK MM18 IMPINGER #5 Air 11/22/19 00:00 11/25/19 08:00 140-17461-12 Y-2975 R2 VEN DIV STACK MM18 IMPINGER #6 Air 11/22/19 00:00 11/25/19 08:00 Eurofins TestAmerica, Knoxville 12/23/2019Page 7 of 89458 Job Narrative 140-17461-1 Sample Receipt The samples were received on November 25, 2019 at 8:00 AM in good condition and properly preserved. The temperature of the cooler at receipt was 1.6º C. GC/MS VOA Impinger Sample Preparation and Analysis: Impinger samples were analyzed for the volatile organic target analytes by purge and trap GCMS using Eurofins TestAmerica Knoxville standard operating procedure KNOX-MS-0015, based on the following method: · SW-846 8260B, “Volatile Organic Compounds by Gas Chromatography/ Mass Spectrometry (GC/MS)” Each sample is prepared by adding a known amount of sample to the purge water in a purge and trap vessel and spiking with internal standards, surrogates, and matrix spike analytes (as needed). Volatile compounds are introduced into the gas chromatograph by the purge and trap method. The components are separated using the chromatograph and detected using a mass spectrometer, which provides both qualitative and quantitative information. Impinger sample results were calculated using the following equation: Concentration, μg/sample = (C × DF × W × Vt) / (Va) Where: C = On-column concentration, μg/L DF = Dilution factor W = Volume of water purged, L Vt = Methanol extract final volume, μL Va = Volume of extract analyzed, µL Method 8260B: The LCS (LCS 140-35706/1-A) for analytical batch 140-35903 recovered below marginal exceedance limits for Trichlorofluoromethane. This is an ongoing instrument issue with LCS recoveries for this analyte. The project manager approved moving forward with analysis for the current job. Method 8260B: The following samples were analyzed outside of analytical holding time due to ongoing instrumentation problems: Y-2972 R2 VEN DIV STACK MM18 IMPINGER #3 (140-17461-9), Y-2973 R2 VEN DIV STACK MM18 IMPINGER #4 (140-17461-10), Y-2974 R2 VEN DIV STACK MM18 IMPINGER #5 (140-17461-11) and Y-2975 R2 VEN DIV STACK MM18 IMPINGER #6 (140-17461-12). No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page. Total Halogens: The samples were prepared for total fluorine, chlorine, bromine and/or iodine using SOP number KNOX-WC-0016 (based on ASTM Method E442 and SW-846 Method 5050). The sample is oxidized by combustion in an oxygen flask at atmospheric pressure or a bomb containing oxygen under pressure. The liberated halogen compounds are absorbed primarily as halides in a sodium carbonate/sodium bicarbonate buffer solution. The combustion products are collected by repeated rinsing of the combustion apparatus, and analyzed by ion chromatography in accordance with SOP KNOX-WC-0005 (based on SW-846 Method 9056). The results are calculated using the following equation: C = [(Ccom × Vcom) / W] × 1000 g/Kg Where: C = Concentration of analyte in the sample, mg/Kg Ccom = Concentration of analyte in the combustate, mg/L Vcom = Total volume of combustate, L W = Weight of sample combusted, g Anions in Impinger Solutions: Anions are is determined in accordance to SOP KNOX-WC-0005 (based on methods 300.0A and 9056). The samples were diluted a minimum of 1/20 in ion chromatography solvent buffer solution to reduce the methanol concentration before injection. Buffer concentrate was added until the pH was 10. Samples are diluted with ion chromatography eluate solution to bring the concentrations within the calibration range when necessary. Higher dilutions are applied as necessary. An aliquot of prepared sample is introduced into the ion chromatograph. Anions are identified based on their retention times as compared to those of known standards. Quantification is accomplished by measuring the peak response and comparing it to a calibration curve generated from known standards. 12/23/2019Page 8 of 89459 The pH of all samples were tested with pH paper. QC consisted of initial CCV and LCS which also serve as initial calibration, duplicate analysis for every 10 samples, and closing CCV. A certified thermometer was used to check the ambient temperature. 12/23/2019Page 9 of 89460 QC Association Summary Job ID: 140-17461-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 GC/MS VOA Prep Batch: 35706 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air MeOH Prep140-17461-1 Y-2964 R1 VEN DIV STACK MM18 IMPINGER #1 Total/NA Air MeOH Prep140-17461-2 Y-2965 R1 VEN DIV STACK MM18 IMPINGER #2 Total/NA Air MeOH Prep140-17461-3 Y-2966 R1 VEN DIV STACK MM18 IMPINGER #3 Total/NA Air MeOH Prep140-17461-4 Y-2967 R1 VEN DIV STACK MM18 IMPINGER #4 Total/NA Air MeOH Prep140-17461-5 Y-2968 R1 VEN DIV STACK MM18 IMPINGER #5 Total/NA Air MeOH Prep140-17461-6 Y-2969 R1 VEN DIV STACK MM18 IMPINGER #6 Total/NA Air MeOH Prep140-17461-7 Y-2970 R2 VEN DIV STACK MM18 IMPINGER #1 Total/NA Air MeOH Prep140-17461-8 Y-2971 R2 VEN DIV STACK MM18 IMPINGER #2 Total/NA Air MeOH Prep140-17461-9 Y-2972 R2 VEN DIV STACK MM18 IMPINGER #3 Total/NA Air MeOH Prep140-17461-10 Y-2973 R2 VEN DIV STACK MM18 IMPINGER #4 Total/NA Air MeOH Prep140-17461-11 Y-2974 R2 VEN DIV STACK MM18 IMPINGER #5 Total/NA Air MeOH Prep140-17461-12 Y-2975 R2 VEN DIV STACK MM18 IMPINGER #6 Total/NA Air MeOH PrepMB 140-35706/2-A Method Blank Total/NA Air MeOH PrepLCS 140-35706/1-A Lab Control Sample Total/NA Air MeOH Prep140-17461-8 MS Y-2971 R2 VEN DIV STACK MM18 IMPINGER #2 Total/NA Air MeOH Prep140-17461-8 MSD Y-2971 R2 VEN DIV STACK MM18 IMPINGER #2 Total/NA Analysis Batch: 35903 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air 8260B 35706140-17461-1 Y-2964 R1 VEN DIV STACK MM18 IMPINGER #1 Total/NA Air 8260B 35706140-17461-2 Y-2965 R1 VEN DIV STACK MM18 IMPINGER #2 Total/NA Air 8260B 35706140-17461-3 Y-2966 R1 VEN DIV STACK MM18 IMPINGER #3 Total/NA Air 8260B 35706140-17461-4 Y-2967 R1 VEN DIV STACK MM18 IMPINGER #4 Total/NA Air 8260B 35706140-17461-5 Y-2968 R1 VEN DIV STACK MM18 IMPINGER #5 Total/NA Air 8260B 35706140-17461-6 Y-2969 R1 VEN DIV STACK MM18 IMPINGER #6 Total/NA Air 8260B 35706140-17461-7 Y-2970 R2 VEN DIV STACK MM18 IMPINGER #1 Total/NA Air 8260B 35706140-17461-8 Y-2971 R2 VEN DIV STACK MM18 IMPINGER #2 Total/NA Air 8260B 35706140-17461-9 Y-2972 R2 VEN DIV STACK MM18 IMPINGER #3 Total/NA Air 8260B 35706140-17461-10 Y-2973 R2 VEN DIV STACK MM18 IMPINGER #4 Total/NA Air 8260B 35706140-17461-11 Y-2974 R2 VEN DIV STACK MM18 IMPINGER #5 Total/NA Air 8260B 35706140-17461-12 Y-2975 R2 VEN DIV STACK MM18 IMPINGER #6 Total/NA Air 8260B 35706MB 140-35706/2-A Method Blank Total/NA Air 8260B 35706LCS 140-35706/1-A Lab Control Sample Total/NA Air 8260B 35706LCS 140-35706/1-A Lab Control Sample Total/NA Air 8260B 35706140-17461-8 MS Y-2971 R2 VEN DIV STACK MM18 IMPINGER #2 Total/NA Air 8260B 35706140-17461-8 MSD Y-2971 R2 VEN DIV STACK MM18 IMPINGER #2 Total/NA HPLC/IC Prep Batch: 35705 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air MeOH PrepMB 140-35705/14-B Method Blank Total/NA Air MeOH PrepLCS 140-35705/15-B Lab Control Sample Total/NA Air MeOH PrepLCSD 140-35705/16-B Lab Control Sample Dup Total/NA Prep Batch: 35706 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air MeOH Prep140-17461-1 Y-2964 R1 VEN DIV STACK MM18 IMPINGER #1 Total/NA Air MeOH Prep140-17461-2 Y-2965 R1 VEN DIV STACK MM18 IMPINGER #2 Total/NA Air MeOH Prep140-17461-3 Y-2966 R1 VEN DIV STACK MM18 IMPINGER #3 Total/NA Air MeOH Prep140-17461-4 Y-2967 R1 VEN DIV STACK MM18 IMPINGER #4 Total/NA Eurofins TestAmerica, Knoxville 12/23/2019Page 10 of 89461 QC Association Summary Job ID: 140-17461-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 HPLC/IC (Continued) Prep Batch: 35706 (Continued) Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air MeOH Prep140-17461-5 Y-2968 R1 VEN DIV STACK MM18 IMPINGER #5 Total/NA Air MeOH Prep140-17461-6 Y-2969 R1 VEN DIV STACK MM18 IMPINGER #6 Total/NA Air MeOH Prep140-17461-7 Y-2970 R2 VEN DIV STACK MM18 IMPINGER #1 Total/NA Air MeOH Prep140-17461-8 Y-2971 R2 VEN DIV STACK MM18 IMPINGER #2 Total/NA Air MeOH Prep140-17461-9 Y-2972 R2 VEN DIV STACK MM18 IMPINGER #3 Total/NA Air MeOH Prep140-17461-10 Y-2973 R2 VEN DIV STACK MM18 IMPINGER #4 Total/NA Air MeOH Prep140-17461-11 Y-2974 R2 VEN DIV STACK MM18 IMPINGER #5 Total/NA Air MeOH Prep140-17461-12 Y-2975 R2 VEN DIV STACK MM18 IMPINGER #6 Total/NA Air MeOH PrepMB 140-35706/17-A Method Blank Total/NA Air MeOH PrepLCS 140-35706/18-A Lab Control Sample Total/NA Air MeOH PrepLCSD 140-35706/19-A Lab Control Sample Dup Total/NA Air MeOH Prep140-17461-8 MS Y-2971 R2 VEN DIV STACK MM18 IMPINGER #2 Total/NA Air MeOH Prep140-17461-8 MSD Y-2971 R2 VEN DIV STACK MM18 IMPINGER #2 Total/NA Prep Batch: 35707 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air MeOH PrepMB 140-35707/17-B Method Blank Total/NA Air MeOH PrepLCS 140-35707/18-B Lab Control Sample Total/NA Air MeOH PrepLCSD 140-35707/19-B Lab Control Sample Dup Total/NA Prep Batch: 35761 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air 5050 35706140-17461-1 Y-2964 R1 VEN DIV STACK MM18 IMPINGER #1 Total/NA Air 5050 35706140-17461-2 Y-2965 R1 VEN DIV STACK MM18 IMPINGER #2 Total/NA Air 5050 35706140-17461-3 Y-2966 R1 VEN DIV STACK MM18 IMPINGER #3 Total/NA Air 5050 35706140-17461-4 Y-2967 R1 VEN DIV STACK MM18 IMPINGER #4 Total/NA Air 5050 35706140-17461-5 Y-2968 R1 VEN DIV STACK MM18 IMPINGER #5 Total/NA Air 5050 35706140-17461-6 Y-2969 R1 VEN DIV STACK MM18 IMPINGER #6 Total/NA Air 5050 35706140-17461-7 Y-2970 R2 VEN DIV STACK MM18 IMPINGER #1 Total/NA Air 5050 35707MB 140-35707/17-B Method Blank Total/NA Air 5050 35707LCS 140-35707/18-B Lab Control Sample Total/NA Air 5050 35707LCSD 140-35707/19-B Lab Control Sample Dup Total/NA Prep Batch: 35762 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air 5050 35706140-17461-8 Y-2971 R2 VEN DIV STACK MM18 IMPINGER #2 Total/NA Air 5050 35706140-17461-9 Y-2972 R2 VEN DIV STACK MM18 IMPINGER #3 Total/NA Air 5050 35706140-17461-10 Y-2973 R2 VEN DIV STACK MM18 IMPINGER #4 Total/NA Air 5050 35706140-17461-11 Y-2974 R2 VEN DIV STACK MM18 IMPINGER #5 Total/NA Air 5050 35706140-17461-12 Y-2975 R2 VEN DIV STACK MM18 IMPINGER #6 Total/NA Air 5050 35705MB 140-35705/14-B Method Blank Total/NA Air 5050 35705LCS 140-35705/15-B Lab Control Sample Total/NA Air 5050 35705LCSD 140-35705/16-B Lab Control Sample Dup Total/NA Air 5050 35706140-17461-8 MS Y-2971 R2 VEN DIV STACK MM18 IMPINGER #2 Total/NA Air 5050 35706140-17461-8 MSD Y-2971 R2 VEN DIV STACK MM18 IMPINGER #2 Total/NA Analysis Batch: 36005 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air 9056 35761140-17461-1 Y-2964 R1 VEN DIV STACK MM18 IMPINGER #1 Total/NA Air 9056 35761140-17461-2 Y-2965 R1 VEN DIV STACK MM18 IMPINGER #2 Total/NA Air 9056 35761140-17461-3 Y-2966 R1 VEN DIV STACK MM18 IMPINGER #3 Total/NA Eurofins TestAmerica, Knoxville 12/23/2019Page 11 of 89462 QC Association Summary Job ID: 140-17461-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 HPLC/IC (Continued) Analysis Batch: 36005 (Continued) Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air 9056 35761140-17461-4 Y-2967 R1 VEN DIV STACK MM18 IMPINGER #4 Total/NA Air 9056 35761140-17461-5 Y-2968 R1 VEN DIV STACK MM18 IMPINGER #5 Total/NA Air 9056 35761140-17461-6 Y-2969 R1 VEN DIV STACK MM18 IMPINGER #6 Total/NA Air 9056 35761140-17461-7 Y-2970 R2 VEN DIV STACK MM18 IMPINGER #1 Total/NA Air 9056 35761MB 140-35707/17-B Method Blank Total/NA Air 9056 35761LCS 140-35707/18-B Lab Control Sample Total/NA Air 9056 35761LCSD 140-35707/19-B Lab Control Sample Dup Total/NA Analysis Batch: 36121 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air 9056 35762140-17461-8 Y-2971 R2 VEN DIV STACK MM18 IMPINGER #2 Total/NA Air 9056 35762140-17461-9 Y-2972 R2 VEN DIV STACK MM18 IMPINGER #3 Total/NA Air 9056 35762140-17461-10 Y-2973 R2 VEN DIV STACK MM18 IMPINGER #4 Total/NA Air 9056 35762140-17461-11 Y-2974 R2 VEN DIV STACK MM18 IMPINGER #5 Total/NA Air 9056 35762140-17461-12 Y-2975 R2 VEN DIV STACK MM18 IMPINGER #6 Total/NA Air 9056 35762MB 140-35705/14-B Method Blank Total/NA Air 9056 35762LCS 140-35705/15-B Lab Control Sample Total/NA Air 9056 35762LCSD 140-35705/16-B Lab Control Sample Dup Total/NA Air 9056 35762140-17461-8 MS Y-2971 R2 VEN DIV STACK MM18 IMPINGER #2 Total/NA Air 9056 35762140-17461-8 MSD Y-2971 R2 VEN DIV STACK MM18 IMPINGER #2 Total/NA Analysis Batch: 36210 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air 9056 35706140-17461-1 Y-2964 R1 VEN DIV STACK MM18 IMPINGER #1 Total/NA Air 9056 35706140-17461-2 Y-2965 R1 VEN DIV STACK MM18 IMPINGER #2 Total/NA Air 9056 35706140-17461-3 Y-2966 R1 VEN DIV STACK MM18 IMPINGER #3 Total/NA Air 9056 35706140-17461-4 Y-2967 R1 VEN DIV STACK MM18 IMPINGER #4 Total/NA Air 9056 35706140-17461-5 Y-2968 R1 VEN DIV STACK MM18 IMPINGER #5 Total/NA Air 9056 35706140-17461-6 Y-2969 R1 VEN DIV STACK MM18 IMPINGER #6 Total/NA Air 9056 35706140-17461-7 Y-2970 R2 VEN DIV STACK MM18 IMPINGER #1 Total/NA Air 9056 35706140-17461-8 Y-2971 R2 VEN DIV STACK MM18 IMPINGER #2 Total/NA Air 9056 35706140-17461-9 Y-2972 R2 VEN DIV STACK MM18 IMPINGER #3 Total/NA Air 9056 35706140-17461-10 Y-2973 R2 VEN DIV STACK MM18 IMPINGER #4 Total/NA Air 9056 35706140-17461-11 Y-2974 R2 VEN DIV STACK MM18 IMPINGER #5 Total/NA Air 9056 35706140-17461-12 Y-2975 R2 VEN DIV STACK MM18 IMPINGER #6 Total/NA Air 9056 35706MB 140-35706/17-A Method Blank Total/NA Air 9056 35706LCS 140-35706/18-A Lab Control Sample Total/NA Air 9056 35706LCSD 140-35706/19-A Lab Control Sample Dup Total/NA Air 9056 35706140-17461-8 MS Y-2971 R2 VEN DIV STACK MM18 IMPINGER #2 Total/NA Air 9056 35706140-17461-8 MSD Y-2971 R2 VEN DIV STACK MM18 IMPINGER #2 Total/NA General Chemistry Analysis Batch: 36086 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air 9041A140-17461-1 Y-2964 R1 VEN DIV STACK MM18 IMPINGER #1 Total/NA Air 9041A140-17461-2 Y-2965 R1 VEN DIV STACK MM18 IMPINGER #2 Total/NA Air 9041A140-17461-3 Y-2966 R1 VEN DIV STACK MM18 IMPINGER #3 Total/NA Air 9041A140-17461-4 Y-2967 R1 VEN DIV STACK MM18 IMPINGER #4 Total/NA Air 9041A140-17461-5 Y-2968 R1 VEN DIV STACK MM18 IMPINGER #5 Total/NA Air 9041A140-17461-6 Y-2969 R1 VEN DIV STACK MM18 IMPINGER #6 Total/NA Eurofins TestAmerica, Knoxville 12/23/2019Page 12 of 89463 QC Association Summary Job ID: 140-17461-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 General Chemistry (Continued) Analysis Batch: 36086 (Continued) Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air 9041A140-17461-7 Y-2970 R2 VEN DIV STACK MM18 IMPINGER #1 Total/NA Air 9041A140-17461-8 Y-2971 R2 VEN DIV STACK MM18 IMPINGER #2 Total/NA Air 9041A140-17461-9 Y-2972 R2 VEN DIV STACK MM18 IMPINGER #3 Total/NA Air 9041A140-17461-10 Y-2973 R2 VEN DIV STACK MM18 IMPINGER #4 Total/NA Air 9041A140-17461-11 Y-2974 R2 VEN DIV STACK MM18 IMPINGER #5 Total/NA Air 9041A140-17461-12 Y-2975 R2 VEN DIV STACK MM18 IMPINGER #6 Total/NA Air 9041ALCS 140-36086/2 Lab Control Sample Total/NA Air 9041A140-17461-1 DU Y-2964 R1 VEN DIV STACK MM18 IMPINGER #1 Total/NA Air 9041A140-17461-2 DU Y-2965 R1 VEN DIV STACK MM18 IMPINGER #2 Total/NA Air 9041A140-17461-3 DU Y-2966 R1 VEN DIV STACK MM18 IMPINGER #3 Total/NA Eurofins TestAmerica, Knoxville 12/23/2019Page 13 of 89464 Client Sample Results Job ID: 140-17461-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Lab Sample ID: 140-17461-1Client Sample ID: Y-2964 R1 VEN DIV STACK MM18 IMPINGER #1 Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) RL MDL 1,1,1,2-Tetrachloroethane ND 42.6 5.62 ug/Sample 11/29/19 10:48 12/06/19 20:54 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 85.2 8.52 ug/Sample 11/29/19 10:48 12/06/19 20:54 11,1,1,3,3-Pentafluorobutane ND 42.6 6.13 ug/Sample 11/29/19 10:48 12/06/19 20:54 11,1,1-Trichloroethane ND 85.2 16.9 ug/Sample 11/29/19 10:48 12/06/19 20:54 11,1,1-Trifluoro-2,2-dichloroethane ND 85.2 8.52 ug/Sample 11/29/19 10:48 12/06/19 20:54 11,1,1-Trifluoroethane ND 42.6 8.18 ug/Sample 11/29/19 10:48 12/06/19 20:54 11,1,2,2-Tetrachloroethane ND 85.2 4.77 ug/Sample 11/29/19 10:48 12/06/19 20:54 11,1,2-Trichloro-1,2,2-trifluoroethane ND 85.2 8.52 ug/Sample 11/29/19 10:48 12/06/19 20:54 11,1,2-trichloro-1-fluoroethane ND 42.6 4.43 ug/Sample 11/29/19 10:48 12/06/19 20:54 11,1,2-Trichloroethane ND 85.2 42.6 ug/Sample 11/29/19 10:48 12/06/19 20:54 11,1-Dichloro-1-fluoroethane ND 85.2 8.52 ug/Sample 11/29/19 10:48 12/06/19 20:54 11,1-dichloro-2,2-difluoroethane ND 85.2 8.52 ug/Sample 11/29/19 10:48 12/06/19 20:54 11,1-dichloro-2,2-difluoroethene ND 42.6 5.11 ug/Sample 11/29/19 10:48 12/06/19 20:54 11,1-Dichloroethane ND 42.6 6.30 ug/Sample 11/29/19 10:48 12/06/19 20:54 11,1-Dichloroethene ND 42.6 4.60 ug/Sample 11/29/19 10:48 12/06/19 20:54 11,1-Dichloropropene ND 852 852 ug/Sample 11/29/19 10:48 12/06/19 20:54 11,1-Difluoroethene ND 85.2 8.52 ug/Sample 11/29/19 10:48 12/06/19 20:54 11,2,2-trichloro-1,1-difluoroethane ND 42.6 13.6 ug/Sample 11/29/19 10:48 12/06/19 20:54 11,2,3-Trichlorobenzene ND 42.6 10.6 ug/Sample 11/29/19 10:48 12/06/19 20:54 11,2,3-Trichloropropane ND 42.6 14.3 ug/Sample 11/29/19 10:48 12/06/19 20:54 11,2,4-Trichlorobenzene ND 42.6 8.86 ug/Sample 11/29/19 10:48 12/06/19 20:54 11,2,4-Trimethylbenzene ND 85.2 15.0 ug/Sample 11/29/19 10:48 12/06/19 20:54 11,2-Dibromo-3-Chloropropane ND 42.6 5.62 ug/Sample 11/29/19 10:48 12/06/19 20:54 11,2-Dibromoethane (EDB)ND 85.2 8.52 ug/Sample 11/29/19 10:48 12/06/19 20:54 11,2-dichloro-1,1-difluoroethane ND 42.6 7.49 ug/Sample 11/29/19 10:48 12/06/19 20:54 11,2-Dichlorobenzene ND 42.6 7.15 ug/Sample 11/29/19 10:48 12/06/19 20:54 11,2-Dichloroethane ND 42.6 4.26 ug/Sample 11/29/19 10:48 12/06/19 20:54 11,2-Dichloropropane ND 42.6 8.86 ug/Sample 11/29/19 10:48 12/06/19 20:54 11,3,5-Trimethylbenzene ND 42.6 7.32 ug/Sample 11/29/19 10:48 12/06/19 20:54 11,3-Dichlorobenzene ND 42.6 4.77 ug/Sample 11/29/19 10:48 12/06/19 20:54 11,3-Dichloropropane ND 42.6 8.52 ug/Sample 11/29/19 10:48 12/06/19 20:54 11,4-Dichlorobenzene ND 85.2 8.69 ug/Sample 11/29/19 10:48 12/06/19 20:54 11-Chloro-1,1-difluoroethane ND 85.2 8.52 ug/Sample 11/29/19 10:48 12/06/19 20:54 12,2-dichloro-1,1-difluoroethylmethyl ether ND 42.6 12.4 ug/Sample 11/29/19 10:48 12/06/19 20:54 12,2-Dichloropropane ND 170 27.3 ug/Sample 11/29/19 10:48 12/06/19 20:54 12-Butanone (MEK)ND 85.2 12.6 ug/Sample 11/29/19 10:48 12/06/19 20:54 12-chloro-1,1,1,4,4,4-hexafluoro-2-but ene ND 85.2 8.52 ug/Sample 11/29/19 10:48 12/06/19 20:54 12-Chloro-1,1,1-Trifluoroethane ND 42.6 8.01 ug/Sample 11/29/19 10:48 12/06/19 20:54 12-Chlorotoluene ND 170 39.2 ug/Sample 11/29/19 10:48 12/06/19 20:54 12-Hexanone ND 37.2 37.2 ug/Sample 11/29/19 10:48 12/06/19 20:54 12-MTP as HFPO 820 42.6 8.86 ug/Sample 11/29/19 10:48 12/06/19 20:54 14-Chlorotoluene ND 42.6 11.4 ug/Sample 11/29/19 10:48 12/06/19 20:54 14-Isopropyltoluene ND 170 27.3 ug/Sample 11/29/19 10:48 12/06/19 20:54 14-Methyl-2-pentanone (MIBK)ND 170 101 ug/Sample 11/29/19 10:48 12/06/19 20:54 1AcetoneND 42.6 8.18 ug/Sample 11/29/19 10:48 12/06/19 20:54 1BenzeneND 42.6 5.96 ug/Sample 11/29/19 10:48 12/06/19 20:54 1BromobenzeneND Eurofins TestAmerica, Knoxville 12/23/2019Page 14 of 89465 Client Sample Results Job ID: 140-17461-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Lab Sample ID: 140-17461-1Client Sample ID: Y-2964 R1 VEN DIV STACK MM18 IMPINGER #1 Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) RL MDL Bromochloromethane ND 42.6 9.54 ug/Sample 11/29/19 10:48 12/06/19 20:54 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 42.6 7.32 ug/Sample 11/29/19 10:48 12/06/19 20:54 1BromodichloromethaneND 42.6 12.9 ug/Sample 11/29/19 10:48 12/06/19 20:54 1BromoformND 85.2 49.4 ug/Sample 11/29/19 10:48 12/06/19 20:54 1BromomethaneND 42.6 10.6 ug/Sample 11/29/19 10:48 12/06/19 20:54 1Carbon disulfide ND 42.6 5.62 ug/Sample 11/29/19 10:48 12/06/19 20:54 1Carbon tetrachloride ND 125 125 ug/Sample 11/29/19 10:48 12/06/19 20:54 1Carbonyl Difluoride ND 42.6 6.13 ug/Sample 11/29/19 10:48 12/06/19 20:54 1ChlorobenzeneND 42.6 9.20 ug/Sample 11/29/19 10:48 12/06/19 20:54 1ChlorodibromomethaneND 85.2 18.7 ug/Sample 11/29/19 10:48 12/06/19 20:54 1ChloroethaneND 42.6 4.94 ug/Sample 11/29/19 10:48 12/06/19 20:54 1ChloroformND 85.2 35.4 ug/Sample 11/29/19 10:48 12/06/19 20:54 1ChloromethaneND 42.6 3.41 ug/Sample 11/29/19 10:48 12/06/19 20:54 1cis-1,2-Dichloroethene ND 42.6 7.32 ug/Sample 11/29/19 10:48 12/06/19 20:54 1cis-1,3-Dichloropropene ND 42.6 4.09 ug/Sample 11/29/19 10:48 12/06/19 20:54 1DibromomethaneND 85.2 15.0 ug/Sample 11/29/19 10:48 12/06/19 20:54 1DichlorodifluoromethaneND 42.6 6.98 ug/Sample 11/29/19 10:48 12/06/19 20:54 1EthylbenzeneND 42.6 42.6 ug/Sample 11/29/19 10:48 12/06/19 20:54 1Heptafluoropropyl 1,2,2,2-tetrafluoroethyl ether 111 42.6 11.2 ug/Sample 11/29/19 10:48 12/06/19 20:54 1HexachlorobutadieneND 40.9 40.9 ug/Sample 11/29/19 10:48 12/06/19 20:54 1HFPO dimer, methyl ester as HFPO-DA ND 42.6 5.96 ug/Sample 11/29/19 10:48 12/06/19 20:54 1IsopropylbenzeneND 85.2 6.98 ug/Sample 11/29/19 10:48 12/06/19 20:54 1m,p-Xylene ND 42.6 27.3 ug/Sample 11/29/19 10:48 12/06/19 20:54 1Methylene Chloride 68.7 42.6 20.4 ug/Sample 11/29/19 10:48 12/06/19 20:54 1NaphthaleneND 42.6 10.9 ug/Sample 11/29/19 10:48 12/06/19 20:54 1n-Butylbenzene ND 42.6 9.20 ug/Sample 11/29/19 10:48 12/06/19 20:54 1n-Propylbenzene ND 42.6 4.43 ug/Sample 11/29/19 10:48 12/06/19 20:54 1o-Xylene ND 42.6 8.35 ug/Sample 11/29/19 10:48 12/06/19 20:54 1sec-Butylbenzene ND 42.6 9.20 ug/Sample 11/29/19 10:48 12/06/19 20:54 1StyreneND 42.6 7.49 ug/Sample 11/29/19 10:48 12/06/19 20:54 1tert-Butylbenzene ND 42.6 5.62 ug/Sample 11/29/19 10:48 12/06/19 20:54 1TetrachloroetheneND 42.6 7.84 ug/Sample 11/29/19 10:48 12/06/19 20:54 1TolueneND 42.6 4.43 ug/Sample 11/29/19 10:48 12/06/19 20:54 1trans-1,2-Dichloroethene ND 42.6 15.0 ug/Sample 11/29/19 10:48 12/06/19 20:54 1trans-1,3-Dichloropropene ND 42.6 3.07 ug/Sample 11/29/19 10:48 12/06/19 20:54 1TrichloroetheneND 85.2 8.18 ug/Sample 11/29/19 10:48 12/06/19 20:54 1TrichlorofluoromethaneND * 85.2 20.4 ug/Sample 11/29/19 10:48 12/06/19 20:54 1Vinyl chloride ND Butanoic acid, heptafluoro-, sodium salt 437 T J N ug/Sample 1.13 2218-54-4 11/29/19 10:48 12/06/19 20:54 1 Tentatively Identified Compound Dil FacAnalyzedPreparedUnit DQualifierEst. Result CAS No.RT 112/06/19 20:5411/29/19 10:48T JUnknown489 ug/Sample 1.18 1,2-Dichloroethane-d4 (Surr)117 70 -160 11/29/19 10:48 12/06/19 20:54 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery 4-Bromofluorobenzene (Surr)110 11/29/19 10:48 12/06/19 20:54 157-152 Eurofins TestAmerica, Knoxville 12/23/2019Page 15 of 89466 Client Sample Results Job ID: 140-17461-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Lab Sample ID: 140-17461-1Client Sample ID: Y-2964 R1 VEN DIV STACK MM18 IMPINGER #1 Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Dibromofluoromethane (Surr)104 62 -134 11/29/19 10:48 12/06/19 20:54 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)97 11/29/19 10:48 12/06/19 20:54 171-139 Method: 9056 - Anions, Ion Chromatography RL MDL Total Fluorine ND 9080 4540 ug/Sample 11/29/19 10:48 12/11/19 21:21 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 3750 1700 ug/Sample 11/29/19 10:48 12/17/19 19:02 20Hydrogen Fluoride ND General Chemistry RL MDL pH 4.00 HF SU 12/13/19 15:01 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Lab Sample ID: 140-17461-2Client Sample ID: Y-2965 R1 VEN DIV STACK MM18 IMPINGER #2 Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) RL MDL 1,1,1,2-Tetrachloroethane ND 46.1 6.08 ug/Sample 11/29/19 10:48 12/06/19 21:19 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 92.2 9.22 ug/Sample 11/29/19 10:48 12/06/19 21:19 11,1,1,3,3-Pentafluorobutane ND 46.1 6.64 ug/Sample 11/29/19 10:48 12/06/19 21:19 11,1,1-Trichloroethane ND 92.2 18.2 ug/Sample 11/29/19 10:48 12/06/19 21:19 11,1,1-Trifluoro-2,2-dichloroethane ND 92.2 9.22 ug/Sample 11/29/19 10:48 12/06/19 21:19 11,1,1-Trifluoroethane ND 46.1 8.85 ug/Sample 11/29/19 10:48 12/06/19 21:19 11,1,2,2-Tetrachloroethane ND 92.2 5.16 ug/Sample 11/29/19 10:48 12/06/19 21:19 11,1,2-Trichloro-1,2,2-trifluoroethane ND 92.2 9.22 ug/Sample 11/29/19 10:48 12/06/19 21:19 11,1,2-trichloro-1-fluoroethane ND 46.1 4.79 ug/Sample 11/29/19 10:48 12/06/19 21:19 11,1,2-Trichloroethane ND 92.2 46.1 ug/Sample 11/29/19 10:48 12/06/19 21:19 11,1-Dichloro-1-fluoroethane ND 92.2 9.22 ug/Sample 11/29/19 10:48 12/06/19 21:19 11,1-dichloro-2,2-difluoroethane ND 92.2 9.22 ug/Sample 11/29/19 10:48 12/06/19 21:19 11,1-dichloro-2,2-difluoroethene ND 46.1 5.53 ug/Sample 11/29/19 10:48 12/06/19 21:19 11,1-Dichloroethane ND 46.1 6.82 ug/Sample 11/29/19 10:48 12/06/19 21:19 11,1-Dichloroethene ND 46.1 4.98 ug/Sample 11/29/19 10:48 12/06/19 21:19 11,1-Dichloropropene ND 922 922 ug/Sample 11/29/19 10:48 12/06/19 21:19 11,1-Difluoroethene ND 92.2 9.22 ug/Sample 11/29/19 10:48 12/06/19 21:19 11,2,2-trichloro-1,1-difluoroethane ND 46.1 14.7 ug/Sample 11/29/19 10:48 12/06/19 21:19 11,2,3-Trichlorobenzene ND 46.1 11.4 ug/Sample 11/29/19 10:48 12/06/19 21:19 11,2,3-Trichloropropane ND 46.1 15.5 ug/Sample 11/29/19 10:48 12/06/19 21:19 11,2,4-Trichlorobenzene ND 46.1 9.59 ug/Sample 11/29/19 10:48 12/06/19 21:19 11,2,4-Trimethylbenzene ND 92.2 16.2 ug/Sample 11/29/19 10:48 12/06/19 21:19 11,2-Dibromo-3-Chloropropane ND 46.1 6.08 ug/Sample 11/29/19 10:48 12/06/19 21:19 11,2-Dibromoethane (EDB)ND 92.2 9.22 ug/Sample 11/29/19 10:48 12/06/19 21:19 11,2-dichloro-1,1-difluoroethane ND 46.1 8.11 ug/Sample 11/29/19 10:48 12/06/19 21:19 11,2-Dichlorobenzene ND 46.1 7.74 ug/Sample 11/29/19 10:48 12/06/19 21:19 11,2-Dichloroethane ND 46.1 4.61 ug/Sample 11/29/19 10:48 12/06/19 21:19 11,2-Dichloropropane ND Eurofins TestAmerica, Knoxville 12/23/2019Page 16 of 89467 Client Sample Results Job ID: 140-17461-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Lab Sample ID: 140-17461-2Client Sample ID: Y-2965 R1 VEN DIV STACK MM18 IMPINGER #2 Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) RL MDL 1,3,5-Trimethylbenzene ND 46.1 9.59 ug/Sample 11/29/19 10:48 12/06/19 21:19 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 46.1 7.93 ug/Sample 11/29/19 10:48 12/06/19 21:19 11,3-Dichlorobenzene ND 46.1 5.16 ug/Sample 11/29/19 10:48 12/06/19 21:19 11,3-Dichloropropane ND 46.1 9.22 ug/Sample 11/29/19 10:48 12/06/19 21:19 11,4-Dichlorobenzene ND 92.2 9.40 ug/Sample 11/29/19 10:48 12/06/19 21:19 11-Chloro-1,1-difluoroethane ND 92.2 9.22 ug/Sample 11/29/19 10:48 12/06/19 21:19 12,2-dichloro-1,1-difluoroethylmethyl ether ND 46.1 13.5 ug/Sample 11/29/19 10:48 12/06/19 21:19 12,2-Dichloropropane ND 184 29.5 ug/Sample 11/29/19 10:48 12/06/19 21:19 12-Butanone (MEK)ND 92.2 13.6 ug/Sample 11/29/19 10:48 12/06/19 21:19 12-chloro-1,1,1,4,4,4-hexafluoro-2-but ene ND 92.2 9.22 ug/Sample 11/29/19 10:48 12/06/19 21:19 12-Chloro-1,1,1-Trifluoroethane ND 46.1 8.66 ug/Sample 11/29/19 10:48 12/06/19 21:19 12-Chlorotoluene ND 184 42.4 ug/Sample 11/29/19 10:48 12/06/19 21:19 12-Hexanone ND 40.3 40.3 ug/Sample 11/29/19 10:48 12/06/19 21:19 12-MTP as HFPO 819 46.1 9.59 ug/Sample 11/29/19 10:48 12/06/19 21:19 14-Chlorotoluene ND 46.1 12.4 ug/Sample 11/29/19 10:48 12/06/19 21:19 14-Isopropyltoluene ND 184 29.5 ug/Sample 11/29/19 10:48 12/06/19 21:19 14-Methyl-2-pentanone (MIBK)ND 184 109 ug/Sample 11/29/19 10:48 12/06/19 21:19 1AcetoneND 46.1 8.85 ug/Sample 11/29/19 10:48 12/06/19 21:19 1BenzeneND 46.1 6.45 ug/Sample 11/29/19 10:48 12/06/19 21:19 1BromobenzeneND 46.1 10.3 ug/Sample 11/29/19 10:48 12/06/19 21:19 1BromochloromethaneND 46.1 7.93 ug/Sample 11/29/19 10:48 12/06/19 21:19 1BromodichloromethaneND 46.1 14.0 ug/Sample 11/29/19 10:48 12/06/19 21:19 1BromoformND 92.2 53.5 ug/Sample 11/29/19 10:48 12/06/19 21:19 1BromomethaneND 46.1 11.4 ug/Sample 11/29/19 10:48 12/06/19 21:19 1Carbon disulfide ND 46.1 6.08 ug/Sample 11/29/19 10:48 12/06/19 21:19 1Carbon tetrachloride ND 135 135 ug/Sample 11/29/19 10:48 12/06/19 21:19 1Carbonyl Difluoride ND 46.1 6.64 ug/Sample 11/29/19 10:48 12/06/19 21:19 1ChlorobenzeneND 46.1 9.95 ug/Sample 11/29/19 10:48 12/06/19 21:19 1ChlorodibromomethaneND 92.2 20.3 ug/Sample 11/29/19 10:48 12/06/19 21:19 1ChloroethaneND 46.1 5.35 ug/Sample 11/29/19 10:48 12/06/19 21:19 1ChloroformND 92.2 38.3 ug/Sample 11/29/19 10:48 12/06/19 21:19 1ChloromethaneND 46.1 3.69 ug/Sample 11/29/19 10:48 12/06/19 21:19 1cis-1,2-Dichloroethene ND 46.1 7.93 ug/Sample 11/29/19 10:48 12/06/19 21:19 1cis-1,3-Dichloropropene ND 46.1 4.42 ug/Sample 11/29/19 10:48 12/06/19 21:19 1DibromomethaneND 92.2 16.2 ug/Sample 11/29/19 10:48 12/06/19 21:19 1DichlorodifluoromethaneND 46.1 7.56 ug/Sample 11/29/19 10:48 12/06/19 21:19 1EthylbenzeneND 46.1 46.1 ug/Sample 11/29/19 10:48 12/06/19 21:19 1Heptafluoropropyl 1,2,2,2-tetrafluoroethyl ether 161 46.1 12.2 ug/Sample 11/29/19 10:48 12/06/19 21:19 1HexachlorobutadieneND 44.2 44.2 ug/Sample 11/29/19 10:48 12/06/19 21:19 1HFPO dimer, methyl ester as HFPO-DA ND 46.1 6.45 ug/Sample 11/29/19 10:48 12/06/19 21:19 1IsopropylbenzeneND 92.2 7.56 ug/Sample 11/29/19 10:48 12/06/19 21:19 1m,p-Xylene ND 46.1 29.5 ug/Sample 11/29/19 10:48 12/06/19 21:19 1Methylene Chloride 56.8 46.1 22.1 ug/Sample 11/29/19 10:48 12/06/19 21:19 1NaphthaleneND 46.1 11.8 ug/Sample 11/29/19 10:48 12/06/19 21:19 1n-Butylbenzene ND Eurofins TestAmerica, Knoxville 12/23/2019Page 17 of 89468 Client Sample Results Job ID: 140-17461-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Lab Sample ID: 140-17461-2Client Sample ID: Y-2965 R1 VEN DIV STACK MM18 IMPINGER #2 Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) RL MDL n-Propylbenzene ND 46.1 9.95 ug/Sample 11/29/19 10:48 12/06/19 21:19 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 46.1 4.79 ug/Sample 11/29/19 10:48 12/06/19 21:19 1o-Xylene ND 46.1 9.03 ug/Sample 11/29/19 10:48 12/06/19 21:19 1sec-Butylbenzene ND 46.1 9.95 ug/Sample 11/29/19 10:48 12/06/19 21:19 1StyreneND 46.1 8.11 ug/Sample 11/29/19 10:48 12/06/19 21:19 1tert-Butylbenzene ND 46.1 6.08 ug/Sample 11/29/19 10:48 12/06/19 21:19 1TetrachloroetheneND 46.1 8.48 ug/Sample 11/29/19 10:48 12/06/19 21:19 1TolueneND 46.1 4.79 ug/Sample 11/29/19 10:48 12/06/19 21:19 1trans-1,2-Dichloroethene ND 46.1 16.2 ug/Sample 11/29/19 10:48 12/06/19 21:19 1trans-1,3-Dichloropropene ND 46.1 3.32 ug/Sample 11/29/19 10:48 12/06/19 21:19 1TrichloroetheneND 92.2 8.85 ug/Sample 11/29/19 10:48 12/06/19 21:19 1TrichlorofluoromethaneND * 92.2 22.1 ug/Sample 11/29/19 10:48 12/06/19 21:19 1Vinyl chloride ND Unknown 561 T J ug/Sample 1.13 11/29/19 10:48 12/06/19 21:19 1 Tentatively Identified Compound Dil FacAnalyzedPreparedUnit DQualifierEst. Result CAS No.RT 112/06/19 21:1911/29/19 10:48T JUnknown1150 ug/Sample 1.18 1,2-Dichloroethane-d4 (Surr)117 70 -160 11/29/19 10:48 12/06/19 21:19 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery 4-Bromofluorobenzene (Surr)111 11/29/19 10:48 12/06/19 21:19 157-152 Dibromofluoromethane (Surr)104 11/29/19 10:48 12/06/19 21:19 162-134 Toluene-d8 (Surr)96 11/29/19 10:48 12/06/19 21:19 171-139 Method: 9056 - Anions, Ion Chromatography RL MDL Total Fluorine 27900 9830 4920 ug/Sample 11/29/19 10:48 12/11/19 21:42 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 4060 1840 ug/Sample 11/29/19 10:48 12/17/19 20:06 20Hydrogen Fluoride ND General Chemistry RL MDL pH 4.00 HF SU 12/13/19 15:01 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Lab Sample ID: 140-17461-3Client Sample ID: Y-2966 R1 VEN DIV STACK MM18 IMPINGER #3 Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) RL MDL 1,1,1,2-Tetrachloroethane ND 8.58 1.13 ug/Sample 11/29/19 10:48 12/06/19 21:43 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 17.2 1.72 ug/Sample 11/29/19 10:48 12/06/19 21:43 11,1,1,3,3-Pentafluorobutane ND 8.58 1.24 ug/Sample 11/29/19 10:48 12/06/19 21:43 11,1,1-Trichloroethane ND 17.2 3.40 ug/Sample 11/29/19 10:48 12/06/19 21:43 11,1,1-Trifluoro-2,2-dichloroethane ND 17.2 1.72 ug/Sample 11/29/19 10:48 12/06/19 21:43 11,1,1-Trifluoroethane ND 8.58 1.65 ug/Sample 11/29/19 10:48 12/06/19 21:43 11,1,2,2-Tetrachloroethane ND 17.2 0.961 ug/Sample 11/29/19 10:48 12/06/19 21:43 11,1,2-Trichloro-1,2,2-trifluoroethane ND 17.2 1.72 ug/Sample 11/29/19 10:48 12/06/19 21:43 11,1,2-trichloro-1-fluoroethane ND Eurofins TestAmerica, Knoxville 12/23/2019Page 18 of 89469 Client Sample Results Job ID: 140-17461-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Lab Sample ID: 140-17461-3Client Sample ID: Y-2966 R1 VEN DIV STACK MM18 IMPINGER #3 Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) RL MDL 1,1,2-Trichloroethane ND 8.58 0.892 ug/Sample 11/29/19 10:48 12/06/19 21:43 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 17.2 8.58 ug/Sample 11/29/19 10:48 12/06/19 21:43 11,1-Dichloro-1-fluoroethane ND 17.2 1.72 ug/Sample 11/29/19 10:48 12/06/19 21:43 11,1-dichloro-2,2-difluoroethane ND 17.2 1.72 ug/Sample 11/29/19 10:48 12/06/19 21:43 11,1-dichloro-2,2-difluoroethene ND 8.58 1.03 ug/Sample 11/29/19 10:48 12/06/19 21:43 11,1-Dichloroethane ND 8.58 1.27 ug/Sample 11/29/19 10:48 12/06/19 21:43 11,1-Dichloroethene ND 8.58 0.926 ug/Sample 11/29/19 10:48 12/06/19 21:43 11,1-Dichloropropene ND 172 172 ug/Sample 11/29/19 10:48 12/06/19 21:43 11,1-Difluoroethene ND 17.2 1.72 ug/Sample 11/29/19 10:48 12/06/19 21:43 11,2,2-trichloro-1,1-difluoroethane ND 8.58 2.74 ug/Sample 11/29/19 10:48 12/06/19 21:43 11,2,3-Trichlorobenzene ND 8.58 2.13 ug/Sample 11/29/19 10:48 12/06/19 21:43 11,2,3-Trichloropropane ND 8.58 2.88 ug/Sample 11/29/19 10:48 12/06/19 21:43 11,2,4-Trichlorobenzene ND 8.58 1.78 ug/Sample 11/29/19 10:48 12/06/19 21:43 11,2,4-Trimethylbenzene ND 17.2 3.02 ug/Sample 11/29/19 10:48 12/06/19 21:43 11,2-Dibromo-3-Chloropropane ND 8.58 1.13 ug/Sample 11/29/19 10:48 12/06/19 21:43 11,2-Dibromoethane (EDB)ND 17.2 1.72 ug/Sample 11/29/19 10:48 12/06/19 21:43 11,2-dichloro-1,1-difluoroethane ND 8.58 1.51 ug/Sample 11/29/19 10:48 12/06/19 21:43 11,2-Dichlorobenzene ND 8.58 1.44 ug/Sample 11/29/19 10:48 12/06/19 21:43 11,2-Dichloroethane ND 8.58 0.858 ug/Sample 11/29/19 10:48 12/06/19 21:43 11,2-Dichloropropane ND 8.58 1.78 ug/Sample 11/29/19 10:48 12/06/19 21:43 11,3,5-Trimethylbenzene ND 8.58 1.48 ug/Sample 11/29/19 10:48 12/06/19 21:43 11,3-Dichlorobenzene ND 8.58 0.961 ug/Sample 11/29/19 10:48 12/06/19 21:43 11,3-Dichloropropane ND 8.58 1.72 ug/Sample 11/29/19 10:48 12/06/19 21:43 11,4-Dichlorobenzene ND 17.2 1.75 ug/Sample 11/29/19 10:48 12/06/19 21:43 11-Chloro-1,1-difluoroethane ND 17.2 1.72 ug/Sample 11/29/19 10:48 12/06/19 21:43 12,2-dichloro-1,1-difluoroethylmethyl ether ND 8.58 2.50 ug/Sample 11/29/19 10:48 12/06/19 21:43 12,2-Dichloropropane ND 34.3 5.49 ug/Sample 11/29/19 10:48 12/06/19 21:43 12-Butanone (MEK)ND 17.2 2.54 ug/Sample 11/29/19 10:48 12/06/19 21:43 12-chloro-1,1,1,4,4,4-hexafluoro-2-but ene ND 17.2 1.72 ug/Sample 11/29/19 10:48 12/06/19 21:43 12-Chloro-1,1,1-Trifluoroethane ND 8.58 1.61 ug/Sample 11/29/19 10:48 12/06/19 21:43 12-Chlorotoluene ND 34.3 7.89 ug/Sample 11/29/19 10:48 12/06/19 21:43 12-Hexanone ND 7.49 7.49 ug/Sample 11/29/19 10:48 12/06/19 21:43 12-MTP as HFPO 60.4 8.58 1.78 ug/Sample 11/29/19 10:48 12/06/19 21:43 14-Chlorotoluene ND 8.58 2.30 ug/Sample 11/29/19 10:48 12/06/19 21:43 14-Isopropyltoluene ND 34.3 5.49 ug/Sample 11/29/19 10:48 12/06/19 21:43 14-Methyl-2-pentanone (MIBK)ND 34.3 20.2 ug/Sample 11/29/19 10:48 12/06/19 21:43 1AcetoneND 8.58 1.65 ug/Sample 11/29/19 10:48 12/06/19 21:43 1BenzeneND 8.58 1.20 ug/Sample 11/29/19 10:48 12/06/19 21:43 1BromobenzeneND 8.58 1.92 ug/Sample 11/29/19 10:48 12/06/19 21:43 1BromochloromethaneND 8.58 1.48 ug/Sample 11/29/19 10:48 12/06/19 21:43 1BromodichloromethaneND 8.58 2.61 ug/Sample 11/29/19 10:48 12/06/19 21:43 1BromoformND 17.2 9.95 ug/Sample 11/29/19 10:48 12/06/19 21:43 1BromomethaneND 8.58 2.13 ug/Sample 11/29/19 10:48 12/06/19 21:43 1Carbon disulfide ND 8.58 1.13 ug/Sample 11/29/19 10:48 12/06/19 21:43 1Carbon tetrachloride ND 25.1 25.1 ug/Sample 11/29/19 10:48 12/06/19 21:43 1Carbonyl Difluoride ND 8.58 1.24 ug/Sample 11/29/19 10:48 12/06/19 21:43 1ChlorobenzeneND Eurofins TestAmerica, Knoxville 12/23/2019Page 19 of 89470 Client Sample Results Job ID: 140-17461-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Lab Sample ID: 140-17461-3Client Sample ID: Y-2966 R1 VEN DIV STACK MM18 IMPINGER #3 Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) RL MDL Chlorodibromomethane ND 8.58 1.85 ug/Sample 11/29/19 10:48 12/06/19 21:43 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 17.2 3.77 ug/Sample 11/29/19 10:48 12/06/19 21:43 1ChloroethaneND 8.58 0.995 ug/Sample 11/29/19 10:48 12/06/19 21:43 1ChloroformND 17.2 7.14 ug/Sample 11/29/19 10:48 12/06/19 21:43 1ChloromethaneND 8.58 0.686 ug/Sample 11/29/19 10:48 12/06/19 21:43 1cis-1,2-Dichloroethene ND 8.58 1.48 ug/Sample 11/29/19 10:48 12/06/19 21:43 1cis-1,3-Dichloropropene ND 8.58 0.823 ug/Sample 11/29/19 10:48 12/06/19 21:43 1DibromomethaneND 17.2 3.02 ug/Sample 11/29/19 10:48 12/06/19 21:43 1DichlorodifluoromethaneND 8.58 1.41 ug/Sample 11/29/19 10:48 12/06/19 21:43 1EthylbenzeneND 8.58 8.58 ug/Sample 11/29/19 10:48 12/06/19 21:43 1Heptafluoropropyl 1,2,2,2-tetrafluoroethyl ether ND 8.58 2.26 ug/Sample 11/29/19 10:48 12/06/19 21:43 1HexachlorobutadieneND 8.23 8.23 ug/Sample 11/29/19 10:48 12/06/19 21:43 1HFPO dimer, methyl ester as HFPO-DA ND 8.58 1.20 ug/Sample 11/29/19 10:48 12/06/19 21:43 1IsopropylbenzeneND 17.2 1.41 ug/Sample 11/29/19 10:48 12/06/19 21:43 1m,p-Xylene ND 8.58 5.49 ug/Sample 11/29/19 10:48 12/06/19 21:43 1Methylene Chloride ND 8.58 4.12 ug/Sample 11/29/19 10:48 12/06/19 21:43 1NaphthaleneND 8.58 2.20 ug/Sample 11/29/19 10:48 12/06/19 21:43 1n-Butylbenzene ND 8.58 1.85 ug/Sample 11/29/19 10:48 12/06/19 21:43 1n-Propylbenzene ND 8.58 0.892 ug/Sample 11/29/19 10:48 12/06/19 21:43 1o-Xylene ND 8.58 1.68 ug/Sample 11/29/19 10:48 12/06/19 21:43 1sec-Butylbenzene ND 8.58 1.85 ug/Sample 11/29/19 10:48 12/06/19 21:43 1StyreneND 8.58 1.51 ug/Sample 11/29/19 10:48 12/06/19 21:43 1tert-Butylbenzene ND 8.58 1.13 ug/Sample 11/29/19 10:48 12/06/19 21:43 1TetrachloroetheneND 8.58 1.58 ug/Sample 11/29/19 10:48 12/06/19 21:43 1TolueneND 8.58 0.892 ug/Sample 11/29/19 10:48 12/06/19 21:43 1trans-1,2-Dichloroethene ND 8.58 3.02 ug/Sample 11/29/19 10:48 12/06/19 21:43 1trans-1,3-Dichloropropene ND 8.58 0.618 ug/Sample 11/29/19 10:48 12/06/19 21:43 1TrichloroetheneND 17.2 1.65 ug/Sample 11/29/19 10:48 12/06/19 21:43 1TrichlorofluoromethaneND * 17.2 4.12 ug/Sample 11/29/19 10:48 12/06/19 21:43 1Vinyl chloride ND Unknown 20.1 T J ug/Sample 1.13 11/29/19 10:48 12/06/19 21:43 1 Tentatively Identified Compound Dil FacAnalyzedPreparedUnit DQualifierEst. Result CAS No.RT 112/06/19 21:4311/29/19 10:48T JUnknown9.96 ug/Sample 1.18 112/06/19 21:4311/29/19 10:48T J NCyclohexane 110-82-724.8 ug/Sample 4.42 112/06/19 21:4311/29/19 10:48T J N1-Dodecene 112-41-410.5 ug/Sample 12.07 112/06/19 21:4311/29/19 10:48T J NCyclohexane, hexyl-4292-75-512.9 ug/Sample 12.69 1,2-Dichloroethane-d4 (Surr)117 70 -160 11/29/19 10:48 12/06/19 21:43 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery 4-Bromofluorobenzene (Surr)111 11/29/19 10:48 12/06/19 21:43 157-152 Dibromofluoromethane (Surr)102 11/29/19 10:48 12/06/19 21:43 162-134 Toluene-d8 (Surr)97 11/29/19 10:48 12/06/19 21:43 171-139 Method: 9056 - Anions, Ion Chromatography RL MDL Total Fluorine 9710 1830 915 ug/Sample 11/29/19 10:48 12/11/19 22:03 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Eurofins TestAmerica, Knoxville 12/23/2019Page 20 of 89471 Client Sample Results Job ID: 140-17461-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Lab Sample ID: 140-17461-3Client Sample ID: Y-2966 R1 VEN DIV STACK MM18 IMPINGER #3 Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 9056 - Anions, Ion Chromatography (Continued) RL MDL Hydrogen Fluoride ND 755 343 ug/Sample 11/29/19 10:48 12/17/19 20:29 20 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier General Chemistry RL MDL pH 4.00 HF SU 12/13/19 15:01 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Lab Sample ID: 140-17461-4Client Sample ID: Y-2967 R1 VEN DIV STACK MM18 IMPINGER #4 Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) RL MDL 1,1,1,2-Tetrachloroethane ND 26.4 3.49 ug/Sample 11/29/19 10:48 12/06/19 22:08 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 52.9 5.29 ug/Sample 11/29/19 10:48 12/06/19 22:08 11,1,1,3,3-Pentafluorobutane ND 26.4 3.81 ug/Sample 11/29/19 10:48 12/06/19 22:08 11,1,1-Trichloroethane ND 52.9 10.5 ug/Sample 11/29/19 10:48 12/06/19 22:08 11,1,1-Trifluoro-2,2-dichloroethane ND 52.9 5.29 ug/Sample 11/29/19 10:48 12/06/19 22:08 11,1,1-Trifluoroethane ND 26.4 5.08 ug/Sample 11/29/19 10:48 12/06/19 22:08 11,1,2,2-Tetrachloroethane ND 52.9 2.96 ug/Sample 11/29/19 10:48 12/06/19 22:08 11,1,2-Trichloro-1,2,2-trifluoroethane ND 52.9 5.29 ug/Sample 11/29/19 10:48 12/06/19 22:08 11,1,2-trichloro-1-fluoroethane ND 26.4 2.75 ug/Sample 11/29/19 10:48 12/06/19 22:08 11,1,2-Trichloroethane ND 52.9 26.4 ug/Sample 11/29/19 10:48 12/06/19 22:08 11,1-Dichloro-1-fluoroethane ND 52.9 5.29 ug/Sample 11/29/19 10:48 12/06/19 22:08 11,1-dichloro-2,2-difluoroethane ND 52.9 5.29 ug/Sample 11/29/19 10:48 12/06/19 22:08 11,1-dichloro-2,2-difluoroethene ND 26.4 3.17 ug/Sample 11/29/19 10:48 12/06/19 22:08 11,1-Dichloroethane ND 26.4 3.91 ug/Sample 11/29/19 10:48 12/06/19 22:08 11,1-Dichloroethene ND 26.4 2.86 ug/Sample 11/29/19 10:48 12/06/19 22:08 11,1-Dichloropropene ND 529 529 ug/Sample 11/29/19 10:48 12/06/19 22:08 11,1-Difluoroethene ND 52.9 5.29 ug/Sample 11/29/19 10:48 12/06/19 22:08 11,2,2-trichloro-1,1-difluoroethane ND 26.4 8.46 ug/Sample 11/29/19 10:48 12/06/19 22:08 11,2,3-Trichlorobenzene ND 26.4 6.56 ug/Sample 11/29/19 10:48 12/06/19 22:08 11,2,3-Trichloropropane ND 26.4 8.89 ug/Sample 11/29/19 10:48 12/06/19 22:08 11,2,4-Trichlorobenzene ND 26.4 5.50 ug/Sample 11/29/19 10:48 12/06/19 22:08 11,2,4-Trimethylbenzene ND 52.9 9.31 ug/Sample 11/29/19 10:48 12/06/19 22:08 11,2-Dibromo-3-Chloropropane ND 26.4 3.49 ug/Sample 11/29/19 10:48 12/06/19 22:08 11,2-Dibromoethane (EDB)ND 52.9 5.29 ug/Sample 11/29/19 10:48 12/06/19 22:08 11,2-dichloro-1,1-difluoroethane ND 26.4 4.65 ug/Sample 11/29/19 10:48 12/06/19 22:08 11,2-Dichlorobenzene ND 26.4 4.44 ug/Sample 11/29/19 10:48 12/06/19 22:08 11,2-Dichloroethane ND 26.4 2.64 ug/Sample 11/29/19 10:48 12/06/19 22:08 11,2-Dichloropropane ND 26.4 5.50 ug/Sample 11/29/19 10:48 12/06/19 22:08 11,3,5-Trimethylbenzene ND 26.4 4.55 ug/Sample 11/29/19 10:48 12/06/19 22:08 11,3-Dichlorobenzene ND 26.4 2.96 ug/Sample 11/29/19 10:48 12/06/19 22:08 11,3-Dichloropropane ND 26.4 5.29 ug/Sample 11/29/19 10:48 12/06/19 22:08 11,4-Dichlorobenzene ND 52.9 5.39 ug/Sample 11/29/19 10:48 12/06/19 22:08 11-Chloro-1,1-difluoroethane ND 52.9 5.29 ug/Sample 11/29/19 10:48 12/06/19 22:08 12,2-dichloro-1,1-difluoroethylmethyl ether ND Eurofins TestAmerica, Knoxville 12/23/2019Page 21 of 89472 Client Sample Results Job ID: 140-17461-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Lab Sample ID: 140-17461-4Client Sample ID: Y-2967 R1 VEN DIV STACK MM18 IMPINGER #4 Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) RL MDL 2,2-Dichloropropane ND 26.4 7.72 ug/Sample 11/29/19 10:48 12/06/19 22:08 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 106 16.9 ug/Sample 11/29/19 10:48 12/06/19 22:08 12-Butanone (MEK)ND 52.9 7.83 ug/Sample 11/29/19 10:48 12/06/19 22:08 12-chloro-1,1,1,4,4,4-hexafluoro-2-but ene ND 52.9 5.29 ug/Sample 11/29/19 10:48 12/06/19 22:08 12-Chloro-1,1,1-Trifluoroethane ND 26.4 4.97 ug/Sample 11/29/19 10:48 12/06/19 22:08 12-Chlorotoluene ND 106 24.3 ug/Sample 11/29/19 10:48 12/06/19 22:08 12-Hexanone ND 23.1 23.1 ug/Sample 11/29/19 10:48 12/06/19 22:08 12-MTP as HFPO 636 26.4 5.50 ug/Sample 11/29/19 10:48 12/06/19 22:08 14-Chlorotoluene ND 26.4 7.09 ug/Sample 11/29/19 10:48 12/06/19 22:08 14-Isopropyltoluene ND 106 16.9 ug/Sample 11/29/19 10:48 12/06/19 22:08 14-Methyl-2-pentanone (MIBK)ND 106 62.4 ug/Sample 11/29/19 10:48 12/06/19 22:08 1AcetoneND 26.4 5.08 ug/Sample 11/29/19 10:48 12/06/19 22:08 1BenzeneND 26.4 3.70 ug/Sample 11/29/19 10:48 12/06/19 22:08 1BromobenzeneND 26.4 5.92 ug/Sample 11/29/19 10:48 12/06/19 22:08 1BromochloromethaneND 26.4 4.55 ug/Sample 11/29/19 10:48 12/06/19 22:08 1BromodichloromethaneND 26.4 8.04 ug/Sample 11/29/19 10:48 12/06/19 22:08 1BromoformND 52.9 30.7 ug/Sample 11/29/19 10:48 12/06/19 22:08 1BromomethaneND 26.4 6.56 ug/Sample 11/29/19 10:48 12/06/19 22:08 1Carbon disulfide ND 26.4 3.49 ug/Sample 11/29/19 10:48 12/06/19 22:08 1Carbon tetrachloride ND 77.7 77.7 ug/Sample 11/29/19 10:48 12/06/19 22:08 1Carbonyl Difluoride ND 26.4 3.81 ug/Sample 11/29/19 10:48 12/06/19 22:08 1ChlorobenzeneND 26.4 5.71 ug/Sample 11/29/19 10:48 12/06/19 22:08 1ChlorodibromomethaneND 52.9 11.6 ug/Sample 11/29/19 10:48 12/06/19 22:08 1ChloroethaneND 26.4 3.07 ug/Sample 11/29/19 10:48 12/06/19 22:08 1ChloroformND 52.9 22.0 ug/Sample 11/29/19 10:48 12/06/19 22:08 1ChloromethaneND 26.4 2.12 ug/Sample 11/29/19 10:48 12/06/19 22:08 1cis-1,2-Dichloroethene ND 26.4 4.55 ug/Sample 11/29/19 10:48 12/06/19 22:08 1cis-1,3-Dichloropropene ND 26.4 2.54 ug/Sample 11/29/19 10:48 12/06/19 22:08 1DibromomethaneND 52.9 9.31 ug/Sample 11/29/19 10:48 12/06/19 22:08 1DichlorodifluoromethaneND 26.4 4.34 ug/Sample 11/29/19 10:48 12/06/19 22:08 1EthylbenzeneND 26.4 26.4 ug/Sample 11/29/19 10:48 12/06/19 22:08 1Heptafluoropropyl 1,2,2,2-tetrafluoroethyl ether ND 26.4 6.98 ug/Sample 11/29/19 10:48 12/06/19 22:08 1HexachlorobutadieneND 25.3 25.3 ug/Sample 11/29/19 10:48 12/06/19 22:08 1HFPO dimer, methyl ester as HFPO-DA ND 26.4 3.70 ug/Sample 11/29/19 10:48 12/06/19 22:08 1IsopropylbenzeneND 52.9 4.34 ug/Sample 11/29/19 10:48 12/06/19 22:08 1m,p-Xylene ND 26.4 16.9 ug/Sample 11/29/19 10:48 12/06/19 22:08 1Methylene Chloride ND 26.4 12.7 ug/Sample 11/29/19 10:48 12/06/19 22:08 1NaphthaleneND 26.4 6.77 ug/Sample 11/29/19 10:48 12/06/19 22:08 1n-Butylbenzene ND 26.4 5.71 ug/Sample 11/29/19 10:48 12/06/19 22:08 1n-Propylbenzene ND 26.4 2.75 ug/Sample 11/29/19 10:48 12/06/19 22:08 1o-Xylene ND 26.4 5.18 ug/Sample 11/29/19 10:48 12/06/19 22:08 1sec-Butylbenzene ND 26.4 5.71 ug/Sample 11/29/19 10:48 12/06/19 22:08 1StyreneND 26.4 4.65 ug/Sample 11/29/19 10:48 12/06/19 22:08 1tert-Butylbenzene ND 26.4 3.49 ug/Sample 11/29/19 10:48 12/06/19 22:08 1TetrachloroetheneND 26.4 4.87 ug/Sample 11/29/19 10:48 12/06/19 22:08 1TolueneND Eurofins TestAmerica, Knoxville 12/23/2019Page 22 of 89473 Client Sample Results Job ID: 140-17461-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Lab Sample ID: 140-17461-4Client Sample ID: Y-2967 R1 VEN DIV STACK MM18 IMPINGER #4 Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) RL MDL trans-1,2-Dichloroethene ND 26.4 2.75 ug/Sample 11/29/19 10:48 12/06/19 22:08 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 26.4 9.31 ug/Sample 11/29/19 10:48 12/06/19 22:08 1trans-1,3-Dichloropropene ND 26.4 1.90 ug/Sample 11/29/19 10:48 12/06/19 22:08 1TrichloroetheneND 52.9 5.08 ug/Sample 11/29/19 10:48 12/06/19 22:08 1TrichlorofluoromethaneND * 52.9 12.7 ug/Sample 11/29/19 10:48 12/06/19 22:08 1Vinyl chloride ND Unknown 365 T J ug/Sample 1.13 11/29/19 10:48 12/06/19 22:08 1 Tentatively Identified Compound Dil FacAnalyzedPreparedUnit DQualifierEst. Result CAS No.RT 112/06/19 22:0811/29/19 10:48T JUnknown452 ug/Sample 1.18 112/06/19 22:0811/29/19 10:48T J NCyclohexane 110-82-741.9 ug/Sample 4.42 1,2-Dichloroethane-d4 (Surr)120 70 -160 11/29/19 10:48 12/06/19 22:08 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery 4-Bromofluorobenzene (Surr)110 11/29/19 10:48 12/06/19 22:08 157-152 Dibromofluoromethane (Surr)104 11/29/19 10:48 12/06/19 22:08 162-134 Toluene-d8 (Surr)96 11/29/19 10:48 12/06/19 22:08 171-139 Method: 9056 - Anions, Ion Chromatography RL MDL Total Fluorine 22000 5640 2820 ug/Sample 11/29/19 10:48 12/12/19 15:10 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 2330 1060 ug/Sample 11/29/19 10:48 12/17/19 20:51 20Hydrogen Fluoride ND General Chemistry RL MDL pH 4.00 HF SU 12/13/19 15:01 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Lab Sample ID: 140-17461-5Client Sample ID: Y-2968 R1 VEN DIV STACK MM18 IMPINGER #5 Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) RL MDL 1,1,1,2-Tetrachloroethane ND 24.1 3.18 ug/Sample 11/29/19 10:48 12/06/19 22:32 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 48.2 4.82 ug/Sample 11/29/19 10:48 12/06/19 22:32 11,1,1,3,3-Pentafluorobutane ND 24.1 3.47 ug/Sample 11/29/19 10:48 12/06/19 22:32 11,1,1-Trichloroethane ND 48.2 9.54 ug/Sample 11/29/19 10:48 12/06/19 22:32 11,1,1-Trifluoro-2,2-dichloroethane ND 48.2 4.82 ug/Sample 11/29/19 10:48 12/06/19 22:32 11,1,1-Trifluoroethane ND 24.1 4.62 ug/Sample 11/29/19 10:48 12/06/19 22:32 11,1,2,2-Tetrachloroethane ND 48.2 2.70 ug/Sample 11/29/19 10:48 12/06/19 22:32 11,1,2-Trichloro-1,2,2-trifluoroethane ND 48.2 4.82 ug/Sample 11/29/19 10:48 12/06/19 22:32 11,1,2-trichloro-1-fluoroethane ND 24.1 2.50 ug/Sample 11/29/19 10:48 12/06/19 22:32 11,1,2-Trichloroethane ND 48.2 24.1 ug/Sample 11/29/19 10:48 12/06/19 22:32 11,1-Dichloro-1-fluoroethane ND 48.2 4.82 ug/Sample 11/29/19 10:48 12/06/19 22:32 11,1-dichloro-2,2-difluoroethane ND 48.2 4.82 ug/Sample 11/29/19 10:48 12/06/19 22:32 11,1-dichloro-2,2-difluoroethene ND 24.1 2.89 ug/Sample 11/29/19 10:48 12/06/19 22:32 11,1-Dichloroethane ND 24.1 3.56 ug/Sample 11/29/19 10:48 12/06/19 22:32 11,1-Dichloroethene ND Eurofins TestAmerica, Knoxville 12/23/2019Page 23 of 89474 Client Sample Results Job ID: 140-17461-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Lab Sample ID: 140-17461-5Client Sample ID: Y-2968 R1 VEN DIV STACK MM18 IMPINGER #5 Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) RL MDL 1,1-Dichloropropene ND 24.1 2.60 ug/Sample 11/29/19 10:48 12/06/19 22:32 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 482 482 ug/Sample 11/29/19 10:48 12/06/19 22:32 11,1-Difluoroethene ND 48.2 4.82 ug/Sample 11/29/19 10:48 12/06/19 22:32 11,2,2-trichloro-1,1-difluoroethane ND 24.1 7.71 ug/Sample 11/29/19 10:48 12/06/19 22:32 11,2,3-Trichlorobenzene ND 24.1 5.97 ug/Sample 11/29/19 10:48 12/06/19 22:32 11,2,3-Trichloropropane ND 24.1 8.09 ug/Sample 11/29/19 10:48 12/06/19 22:32 11,2,4-Trichlorobenzene ND 24.1 5.01 ug/Sample 11/29/19 10:48 12/06/19 22:32 11,2,4-Trimethylbenzene ND 48.2 8.48 ug/Sample 11/29/19 10:48 12/06/19 22:32 11,2-Dibromo-3-Chloropropane ND 24.1 3.18 ug/Sample 11/29/19 10:48 12/06/19 22:32 11,2-Dibromoethane (EDB)ND 48.2 4.82 ug/Sample 11/29/19 10:48 12/06/19 22:32 11,2-dichloro-1,1-difluoroethane ND 24.1 4.24 ug/Sample 11/29/19 10:48 12/06/19 22:32 11,2-Dichlorobenzene ND 24.1 4.05 ug/Sample 11/29/19 10:48 12/06/19 22:32 11,2-Dichloroethane ND 24.1 2.41 ug/Sample 11/29/19 10:48 12/06/19 22:32 11,2-Dichloropropane ND 24.1 5.01 ug/Sample 11/29/19 10:48 12/06/19 22:32 11,3,5-Trimethylbenzene ND 24.1 4.14 ug/Sample 11/29/19 10:48 12/06/19 22:32 11,3-Dichlorobenzene ND 24.1 2.70 ug/Sample 11/29/19 10:48 12/06/19 22:32 11,3-Dichloropropane ND 24.1 4.82 ug/Sample 11/29/19 10:48 12/06/19 22:32 11,4-Dichlorobenzene ND 48.2 4.91 ug/Sample 11/29/19 10:48 12/06/19 22:32 11-Chloro-1,1-difluoroethane ND 48.2 4.82 ug/Sample 11/29/19 10:48 12/06/19 22:32 12,2-dichloro-1,1-difluoroethylmethyl ether ND 24.1 7.03 ug/Sample 11/29/19 10:48 12/06/19 22:32 12,2-Dichloropropane ND 96.3 15.4 ug/Sample 11/29/19 10:48 12/06/19 22:32 12-Butanone (MEK)ND 48.2 7.13 ug/Sample 11/29/19 10:48 12/06/19 22:32 12-chloro-1,1,1,4,4,4-hexafluoro-2-but ene ND 48.2 4.82 ug/Sample 11/29/19 10:48 12/06/19 22:32 12-Chloro-1,1,1-Trifluoroethane ND 24.1 4.53 ug/Sample 11/29/19 10:48 12/06/19 22:32 12-Chlorotoluene ND 96.3 22.2 ug/Sample 11/29/19 10:48 12/06/19 22:32 12-Hexanone ND 21.0 21.0 ug/Sample 11/29/19 10:48 12/06/19 22:32 12-MTP as HFPO 490 24.1 5.01 ug/Sample 11/29/19 10:48 12/06/19 22:32 14-Chlorotoluene ND 24.1 6.45 ug/Sample 11/29/19 10:48 12/06/19 22:32 14-Isopropyltoluene ND 96.3 15.4 ug/Sample 11/29/19 10:48 12/06/19 22:32 14-Methyl-2-pentanone (MIBK)ND 96.3 56.8 ug/Sample 11/29/19 10:48 12/06/19 22:32 1AcetoneND 24.1 4.62 ug/Sample 11/29/19 10:48 12/06/19 22:32 1BenzeneND 24.1 3.37 ug/Sample 11/29/19 10:48 12/06/19 22:32 1BromobenzeneND 24.1 5.40 ug/Sample 11/29/19 10:48 12/06/19 22:32 1BromochloromethaneND 24.1 4.14 ug/Sample 11/29/19 10:48 12/06/19 22:32 1BromodichloromethaneND 24.1 7.32 ug/Sample 11/29/19 10:48 12/06/19 22:32 1BromoformND 48.2 27.9 ug/Sample 11/29/19 10:48 12/06/19 22:32 1BromomethaneND 24.1 5.97 ug/Sample 11/29/19 10:48 12/06/19 22:32 1Carbon disulfide ND 24.1 3.18 ug/Sample 11/29/19 10:48 12/06/19 22:32 1Carbon tetrachloride ND 70.6 70.6 ug/Sample 11/29/19 10:48 12/06/19 22:32 1Carbonyl Difluoride ND 24.1 3.47 ug/Sample 11/29/19 10:48 12/06/19 22:32 1ChlorobenzeneND 24.1 5.20 ug/Sample 11/29/19 10:48 12/06/19 22:32 1ChlorodibromomethaneND 48.2 10.6 ug/Sample 11/29/19 10:48 12/06/19 22:32 1ChloroethaneND 24.1 2.79 ug/Sample 11/29/19 10:48 12/06/19 22:32 1ChloroformND 48.2 20.0 ug/Sample 11/29/19 10:48 12/06/19 22:32 1ChloromethaneND 24.1 1.93 ug/Sample 11/29/19 10:48 12/06/19 22:32 1cis-1,2-Dichloroethene ND 24.1 4.14 ug/Sample 11/29/19 10:48 12/06/19 22:32 1cis-1,3-Dichloropropene ND Eurofins TestAmerica, Knoxville 12/23/2019Page 24 of 89475 Client Sample Results Job ID: 140-17461-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Lab Sample ID: 140-17461-5Client Sample ID: Y-2968 R1 VEN DIV STACK MM18 IMPINGER #5 Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) RL MDL Dibromomethane ND 24.1 2.31 ug/Sample 11/29/19 10:48 12/06/19 22:32 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 48.2 8.48 ug/Sample 11/29/19 10:48 12/06/19 22:32 1DichlorodifluoromethaneND 24.1 3.95 ug/Sample 11/29/19 10:48 12/06/19 22:32 1EthylbenzeneND 24.1 24.1 ug/Sample 11/29/19 10:48 12/06/19 22:32 1Heptafluoropropyl 1,2,2,2-tetrafluoroethyl ether ND 24.1 6.36 ug/Sample 11/29/19 10:48 12/06/19 22:32 1HexachlorobutadieneND 23.1 23.1 ug/Sample 11/29/19 10:48 12/06/19 22:32 1HFPO dimer, methyl ester as HFPO-DA ND 24.1 3.37 ug/Sample 11/29/19 10:48 12/06/19 22:32 1IsopropylbenzeneND 48.2 3.95 ug/Sample 11/29/19 10:48 12/06/19 22:32 1m,p-Xylene ND 24.1 15.4 ug/Sample 11/29/19 10:48 12/06/19 22:32 1Methylene Chloride ND 24.1 11.6 ug/Sample 11/29/19 10:48 12/06/19 22:32 1NaphthaleneND 24.1 6.17 ug/Sample 11/29/19 10:48 12/06/19 22:32 1n-Butylbenzene ND 24.1 5.20 ug/Sample 11/29/19 10:48 12/06/19 22:32 1n-Propylbenzene ND 24.1 2.50 ug/Sample 11/29/19 10:48 12/06/19 22:32 1o-Xylene ND 24.1 4.72 ug/Sample 11/29/19 10:48 12/06/19 22:32 1sec-Butylbenzene ND 24.1 5.20 ug/Sample 11/29/19 10:48 12/06/19 22:32 1StyreneND 24.1 4.24 ug/Sample 11/29/19 10:48 12/06/19 22:32 1tert-Butylbenzene ND 24.1 3.18 ug/Sample 11/29/19 10:48 12/06/19 22:32 1TetrachloroetheneND 24.1 4.43 ug/Sample 11/29/19 10:48 12/06/19 22:32 1TolueneND 24.1 2.50 ug/Sample 11/29/19 10:48 12/06/19 22:32 1trans-1,2-Dichloroethene ND 24.1 8.48 ug/Sample 11/29/19 10:48 12/06/19 22:32 1trans-1,3-Dichloropropene ND 24.1 1.73 ug/Sample 11/29/19 10:48 12/06/19 22:32 1TrichloroetheneND 48.2 4.62 ug/Sample 11/29/19 10:48 12/06/19 22:32 1TrichlorofluoromethaneND * 48.2 11.6 ug/Sample 11/29/19 10:48 12/06/19 22:32 1Vinyl chloride ND Unknown 223 T J ug/Sample 1.13 11/29/19 10:48 12/06/19 22:32 1 Tentatively Identified Compound Dil FacAnalyzedPreparedUnit DQualifierEst. Result CAS No.RT 112/06/19 22:3211/29/19 10:48T J NPropane, 1,1,1,2,2,3,3-heptafluoro-3- [(trifluoroethenyl)oxy] 1623-05-8104ug/Sample 1.18 112/06/19 22:3211/29/19 10:48T J NCyclohexane 110-82-741.0 ug/Sample 4.42 112/06/19 22:3211/29/19 10:48T JUnknown30.9 ug/Sample 13.17 1,2-Dichloroethane-d4 (Surr)121 70 -160 11/29/19 10:48 12/06/19 22:32 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery 4-Bromofluorobenzene (Surr)109 11/29/19 10:48 12/06/19 22:32 157-152 Dibromofluoromethane (Surr)106 11/29/19 10:48 12/06/19 22:32 162-134 Toluene-d8 (Surr)95 11/29/19 10:48 12/06/19 22:32 171-139 Method: 9056 - Anions, Ion Chromatography RL MDL Total Fluorine 4360 J 5140 2570 ug/Sample 11/29/19 10:48 12/11/19 23:30 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 2120 963 ug/Sample 11/29/19 10:48 12/17/19 21:14 20Hydrogen Fluoride ND General Chemistry RL MDL pH 4.00 HF SU 12/13/19 15:01 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Eurofins TestAmerica, Knoxville 12/23/2019Page 25 of 89476 Client Sample Results Job ID: 140-17461-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Lab Sample ID: 140-17461-6Client Sample ID: Y-2969 R1 VEN DIV STACK MM18 IMPINGER #6 Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) RL MDL 1,1,1,2-Tetrachloroethane ND 31.3 4.13 ug/Sample 11/29/19 10:48 12/06/19 22:57 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 62.7 6.27 ug/Sample 11/29/19 10:48 12/06/19 22:57 11,1,1,3,3-Pentafluorobutane ND 31.3 4.51 ug/Sample 11/29/19 10:48 12/06/19 22:57 11,1,1-Trichloroethane ND 62.7 12.4 ug/Sample 11/29/19 10:48 12/06/19 22:57 11,1,1-Trifluoro-2,2-dichloroethane ND 62.7 6.27 ug/Sample 11/29/19 10:48 12/06/19 22:57 11,1,1-Trifluoroethane ND 31.3 6.01 ug/Sample 11/29/19 10:48 12/06/19 22:57 11,1,2,2-Tetrachloroethane ND 62.7 3.51 ug/Sample 11/29/19 10:48 12/06/19 22:57 11,1,2-Trichloro-1,2,2-trifluoroethane ND 62.7 6.27 ug/Sample 11/29/19 10:48 12/06/19 22:57 11,1,2-trichloro-1-fluoroethane ND 31.3 3.26 ug/Sample 11/29/19 10:48 12/06/19 22:57 11,1,2-Trichloroethane ND 62.7 31.3 ug/Sample 11/29/19 10:48 12/06/19 22:57 11,1-Dichloro-1-fluoroethane ND 62.7 6.27 ug/Sample 11/29/19 10:48 12/06/19 22:57 11,1-dichloro-2,2-difluoroethane ND 62.7 6.27 ug/Sample 11/29/19 10:48 12/06/19 22:57 11,1-dichloro-2,2-difluoroethene ND 31.3 3.76 ug/Sample 11/29/19 10:48 12/06/19 22:57 11,1-Dichloroethane ND 31.3 4.64 ug/Sample 11/29/19 10:48 12/06/19 22:57 11,1-Dichloroethene ND 31.3 3.38 ug/Sample 11/29/19 10:48 12/06/19 22:57 11,1-Dichloropropene ND 627 627 ug/Sample 11/29/19 10:48 12/06/19 22:57 11,1-Difluoroethene ND 62.7 6.27 ug/Sample 11/29/19 10:48 12/06/19 22:57 11,2,2-trichloro-1,1-difluoroethane ND 31.3 10.0 ug/Sample 11/29/19 10:48 12/06/19 22:57 11,2,3-Trichlorobenzene ND 31.3 7.77 ug/Sample 11/29/19 10:48 12/06/19 22:57 11,2,3-Trichloropropane ND 31.3 10.5 ug/Sample 11/29/19 10:48 12/06/19 22:57 11,2,4-Trichlorobenzene ND 31.3 6.52 ug/Sample 11/29/19 10:48 12/06/19 22:57 11,2,4-Trimethylbenzene ND 62.7 11.0 ug/Sample 11/29/19 10:48 12/06/19 22:57 11,2-Dibromo-3-Chloropropane ND 31.3 4.13 ug/Sample 11/29/19 10:48 12/06/19 22:57 11,2-Dibromoethane (EDB)ND 62.7 6.27 ug/Sample 11/29/19 10:48 12/06/19 22:57 11,2-dichloro-1,1-difluoroethane ND 31.3 5.51 ug/Sample 11/29/19 10:48 12/06/19 22:57 11,2-Dichlorobenzene ND 31.3 5.26 ug/Sample 11/29/19 10:48 12/06/19 22:57 11,2-Dichloroethane ND 31.3 3.13 ug/Sample 11/29/19 10:48 12/06/19 22:57 11,2-Dichloropropane ND 31.3 6.52 ug/Sample 11/29/19 10:48 12/06/19 22:57 11,3,5-Trimethylbenzene ND 31.3 5.39 ug/Sample 11/29/19 10:48 12/06/19 22:57 11,3-Dichlorobenzene ND 31.3 3.51 ug/Sample 11/29/19 10:48 12/06/19 22:57 11,3-Dichloropropane ND 31.3 6.27 ug/Sample 11/29/19 10:48 12/06/19 22:57 11,4-Dichlorobenzene ND 62.7 6.39 ug/Sample 11/29/19 10:48 12/06/19 22:57 11-Chloro-1,1-difluoroethane ND 62.7 6.27 ug/Sample 11/29/19 10:48 12/06/19 22:57 12,2-dichloro-1,1-difluoroethylmethyl ether ND 31.3 9.15 ug/Sample 11/29/19 10:48 12/06/19 22:57 12,2-Dichloropropane ND 125 20.0 ug/Sample 11/29/19 10:48 12/06/19 22:57 12-Butanone (MEK)ND 62.7 9.27 ug/Sample 11/29/19 10:48 12/06/19 22:57 12-chloro-1,1,1,4,4,4-hexafluoro-2-but ene ND 62.7 6.27 ug/Sample 11/29/19 10:48 12/06/19 22:57 12-Chloro-1,1,1-Trifluoroethane ND 31.3 5.89 ug/Sample 11/29/19 10:48 12/06/19 22:57 12-Chlorotoluene ND 125 28.8 ug/Sample 11/29/19 10:48 12/06/19 22:57 12-Hexanone ND 27.3 27.3 ug/Sample 11/29/19 10:48 12/06/19 22:57 12-MTP as HFPO 672 31.3 6.52 ug/Sample 11/29/19 10:48 12/06/19 22:57 14-Chlorotoluene ND 31.3 8.40 ug/Sample 11/29/19 10:48 12/06/19 22:57 14-Isopropyltoluene ND 125 20.0 ug/Sample 11/29/19 10:48 12/06/19 22:57 14-Methyl-2-pentanone (MIBK)ND 125 73.9 ug/Sample 11/29/19 10:48 12/06/19 22:57 1AcetoneND 31.3 6.01 ug/Sample 11/29/19 10:48 12/06/19 22:57 1BenzeneND 31.3 4.39 ug/Sample 11/29/19 10:48 12/06/19 22:57 1BromobenzeneND Eurofins TestAmerica, Knoxville 12/23/2019Page 26 of 89477 Client Sample Results Job ID: 140-17461-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Lab Sample ID: 140-17461-6Client Sample ID: Y-2969 R1 VEN DIV STACK MM18 IMPINGER #6 Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) RL MDL Bromochloromethane ND 31.3 7.02 ug/Sample 11/29/19 10:48 12/06/19 22:57 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 31.3 5.39 ug/Sample 11/29/19 10:48 12/06/19 22:57 1BromodichloromethaneND 31.3 9.52 ug/Sample 11/29/19 10:48 12/06/19 22:57 1BromoformND 62.7 36.3 ug/Sample 11/29/19 10:48 12/06/19 22:57 1BromomethaneND 31.3 7.77 ug/Sample 11/29/19 10:48 12/06/19 22:57 1Carbon disulfide ND 31.3 4.13 ug/Sample 11/29/19 10:48 12/06/19 22:57 1Carbon tetrachloride ND 91.6 91.6 ug/Sample 11/29/19 10:48 12/06/19 22:57 1Carbonyl Difluoride ND 31.3 4.51 ug/Sample 11/29/19 10:48 12/06/19 22:57 1ChlorobenzeneND 31.3 6.77 ug/Sample 11/29/19 10:48 12/06/19 22:57 1ChlorodibromomethaneND 62.7 13.8 ug/Sample 11/29/19 10:48 12/06/19 22:57 1ChloroethaneND 31.3 3.63 ug/Sample 11/29/19 10:48 12/06/19 22:57 1ChloroformND 62.7 26.1 ug/Sample 11/29/19 10:48 12/06/19 22:57 1ChloromethaneND 31.3 2.51 ug/Sample 11/29/19 10:48 12/06/19 22:57 1cis-1,2-Dichloroethene ND 31.3 5.39 ug/Sample 11/29/19 10:48 12/06/19 22:57 1cis-1,3-Dichloropropene ND 31.3 3.01 ug/Sample 11/29/19 10:48 12/06/19 22:57 1DibromomethaneND 62.7 11.0 ug/Sample 11/29/19 10:48 12/06/19 22:57 1DichlorodifluoromethaneND 31.3 5.14 ug/Sample 11/29/19 10:48 12/06/19 22:57 1EthylbenzeneND 31.3 31.3 ug/Sample 11/29/19 10:48 12/06/19 22:57 1Heptafluoropropyl 1,2,2,2-tetrafluoroethyl ether ND 31.3 8.27 ug/Sample 11/29/19 10:48 12/06/19 22:57 1HexachlorobutadieneND 30.0 30.0 ug/Sample 11/29/19 10:48 12/06/19 22:57 1HFPO dimer, methyl ester as HFPO-DA ND 31.3 4.39 ug/Sample 11/29/19 10:48 12/06/19 22:57 1IsopropylbenzeneND 62.7 5.14 ug/Sample 11/29/19 10:48 12/06/19 22:57 1m,p-Xylene ND 31.3 20.0 ug/Sample 11/29/19 10:48 12/06/19 22:57 1Methylene Chloride ND 31.3 15.0 ug/Sample 11/29/19 10:48 12/06/19 22:57 1NaphthaleneND 31.3 8.02 ug/Sample 11/29/19 10:48 12/06/19 22:57 1n-Butylbenzene ND 31.3 6.77 ug/Sample 11/29/19 10:48 12/06/19 22:57 1n-Propylbenzene ND 31.3 3.26 ug/Sample 11/29/19 10:48 12/06/19 22:57 1o-Xylene ND 31.3 6.14 ug/Sample 11/29/19 10:48 12/06/19 22:57 1sec-Butylbenzene ND 31.3 6.77 ug/Sample 11/29/19 10:48 12/06/19 22:57 1StyreneND 31.3 5.51 ug/Sample 11/29/19 10:48 12/06/19 22:57 1tert-Butylbenzene ND 31.3 4.13 ug/Sample 11/29/19 10:48 12/06/19 22:57 1TetrachloroetheneND 31.3 5.76 ug/Sample 11/29/19 10:48 12/06/19 22:57 1TolueneND 31.3 3.26 ug/Sample 11/29/19 10:48 12/06/19 22:57 1trans-1,2-Dichloroethene ND 31.3 11.0 ug/Sample 11/29/19 10:48 12/06/19 22:57 1trans-1,3-Dichloropropene ND 31.3 2.26 ug/Sample 11/29/19 10:48 12/06/19 22:57 1TrichloroetheneND 62.7 6.01 ug/Sample 11/29/19 10:48 12/06/19 22:57 1TrichlorofluoromethaneND * 62.7 15.0 ug/Sample 11/29/19 10:48 12/06/19 22:57 1Vinyl chloride ND Unknown 273 T J ug/Sample 1.13 11/29/19 10:48 12/06/19 22:57 1 Tentatively Identified Compound Dil FacAnalyzedPreparedUnit DQualifierEst. Result CAS No.RT 112/06/19 22:5711/29/19 10:48T J NPropane, 1,1,1,2,2,3,3-heptafluoro-3- [(trifluoroethenyl)oxy] 1623-05-8160ug/Sample 1.18 1,2-Dichloroethane-d4 (Surr)118 70 -160 11/29/19 10:48 12/06/19 22:57 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery 4-Bromofluorobenzene (Surr)108 11/29/19 10:48 12/06/19 22:57 157-152 Eurofins TestAmerica, Knoxville 12/23/2019Page 27 of 89478 Client Sample Results Job ID: 140-17461-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Lab Sample ID: 140-17461-6Client Sample ID: Y-2969 R1 VEN DIV STACK MM18 IMPINGER #6 Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Dibromofluoromethane (Surr)105 62 -134 11/29/19 10:48 12/06/19 22:57 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)97 11/29/19 10:48 12/06/19 22:57 171-139 Method: 9056 - Anions, Ion Chromatography RL MDL Total Fluorine 3970 J 6680 3340 ug/Sample 11/29/19 10:48 12/11/19 23:50 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 2760 1250 ug/Sample 11/29/19 10:48 12/17/19 21:37 20Hydrogen Fluoride ND General Chemistry RL MDL pH 4.00 HF SU 12/13/19 15:01 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Lab Sample ID: 140-17461-7Client Sample ID: Y-2970 R2 VEN DIV STACK MM18 IMPINGER #1 Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) RL MDL 1,1,1,2-Tetrachloroethane ND 30.2 3.99 ug/Sample 11/29/19 10:48 12/06/19 23:21 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 60.4 6.04 ug/Sample 11/29/19 10:48 12/06/19 23:21 11,1,1,3,3-Pentafluorobutane ND 30.2 4.35 ug/Sample 11/29/19 10:48 12/06/19 23:21 11,1,1-Trichloroethane ND 60.4 12.0 ug/Sample 11/29/19 10:48 12/06/19 23:21 11,1,1-Trifluoro-2,2-dichloroethane ND 60.4 6.04 ug/Sample 11/29/19 10:48 12/06/19 23:21 11,1,1-Trifluoroethane ND 30.2 5.80 ug/Sample 11/29/19 10:48 12/06/19 23:21 11,1,2,2-Tetrachloroethane ND 60.4 3.38 ug/Sample 11/29/19 10:48 12/06/19 23:21 11,1,2-Trichloro-1,2,2-trifluoroethane ND 60.4 6.04 ug/Sample 11/29/19 10:48 12/06/19 23:21 11,1,2-trichloro-1-fluoroethane ND 30.2 3.14 ug/Sample 11/29/19 10:48 12/06/19 23:21 11,1,2-Trichloroethane ND 60.4 30.2 ug/Sample 11/29/19 10:48 12/06/19 23:21 11,1-Dichloro-1-fluoroethane ND 60.4 6.04 ug/Sample 11/29/19 10:48 12/06/19 23:21 11,1-dichloro-2,2-difluoroethane ND 60.4 6.04 ug/Sample 11/29/19 10:48 12/06/19 23:21 11,1-dichloro-2,2-difluoroethene ND 30.2 3.62 ug/Sample 11/29/19 10:48 12/06/19 23:21 11,1-Dichloroethane ND 30.2 4.47 ug/Sample 11/29/19 10:48 12/06/19 23:21 11,1-Dichloroethene ND 30.2 3.26 ug/Sample 11/29/19 10:48 12/06/19 23:21 11,1-Dichloropropene ND 604 604 ug/Sample 11/29/19 10:48 12/06/19 23:21 11,1-Difluoroethene ND 60.4 6.04 ug/Sample 11/29/19 10:48 12/06/19 23:21 11,2,2-trichloro-1,1-difluoroethane ND 30.2 9.67 ug/Sample 11/29/19 10:48 12/06/19 23:21 11,2,3-Trichlorobenzene ND 30.2 7.49 ug/Sample 11/29/19 10:48 12/06/19 23:21 11,2,3-Trichloropropane ND 30.2 10.1 ug/Sample 11/29/19 10:48 12/06/19 23:21 11,2,4-Trichlorobenzene ND 30.2 6.28 ug/Sample 11/29/19 10:48 12/06/19 23:21 11,2,4-Trimethylbenzene ND 60.4 10.6 ug/Sample 11/29/19 10:48 12/06/19 23:21 11,2-Dibromo-3-Chloropropane ND 30.2 3.99 ug/Sample 11/29/19 10:48 12/06/19 23:21 11,2-Dibromoethane (EDB)ND 60.4 6.04 ug/Sample 11/29/19 10:48 12/06/19 23:21 11,2-dichloro-1,1-difluoroethane ND 30.2 5.32 ug/Sample 11/29/19 10:48 12/06/19 23:21 11,2-Dichlorobenzene ND 30.2 5.07 ug/Sample 11/29/19 10:48 12/06/19 23:21 11,2-Dichloroethane ND 30.2 3.02 ug/Sample 11/29/19 10:48 12/06/19 23:21 11,2-Dichloropropane ND Eurofins TestAmerica, Knoxville 12/23/2019Page 28 of 89479 Client Sample Results Job ID: 140-17461-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Lab Sample ID: 140-17461-7Client Sample ID: Y-2970 R2 VEN DIV STACK MM18 IMPINGER #1 Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) RL MDL 1,3,5-Trimethylbenzene ND 30.2 6.28 ug/Sample 11/29/19 10:48 12/06/19 23:21 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 30.2 5.20 ug/Sample 11/29/19 10:48 12/06/19 23:21 11,3-Dichlorobenzene ND 30.2 3.38 ug/Sample 11/29/19 10:48 12/06/19 23:21 11,3-Dichloropropane ND 30.2 6.04 ug/Sample 11/29/19 10:48 12/06/19 23:21 11,4-Dichlorobenzene ND 60.4 6.16 ug/Sample 11/29/19 10:48 12/06/19 23:21 11-Chloro-1,1-difluoroethane ND 60.4 6.04 ug/Sample 11/29/19 10:48 12/06/19 23:21 12,2-dichloro-1,1-difluoroethylmethyl ether ND 30.2 8.82 ug/Sample 11/29/19 10:48 12/06/19 23:21 12,2-Dichloropropane ND 121 19.3 ug/Sample 11/29/19 10:48 12/06/19 23:21 12-Butanone (MEK)ND 60.4 8.94 ug/Sample 11/29/19 10:48 12/06/19 23:21 12-chloro-1,1,1,4,4,4-hexafluoro-2-but ene ND 60.4 6.04 ug/Sample 11/29/19 10:48 12/06/19 23:21 12-Chloro-1,1,1-Trifluoroethane ND 30.2 5.68 ug/Sample 11/29/19 10:48 12/06/19 23:21 12-Chlorotoluene ND 121 27.8 ug/Sample 11/29/19 10:48 12/06/19 23:21 12-Hexanone ND 26.4 26.4 ug/Sample 11/29/19 10:48 12/06/19 23:21 12-MTP as HFPO 467 30.2 6.28 ug/Sample 11/29/19 10:48 12/06/19 23:21 14-Chlorotoluene ND 30.2 8.09 ug/Sample 11/29/19 10:48 12/06/19 23:21 14-Isopropyltoluene ND 121 19.3 ug/Sample 11/29/19 10:48 12/06/19 23:21 14-Methyl-2-pentanone (MIBK)ND 121 71.3 ug/Sample 11/29/19 10:48 12/06/19 23:21 1AcetoneND 30.2 5.80 ug/Sample 11/29/19 10:48 12/06/19 23:21 1BenzeneND 30.2 4.23 ug/Sample 11/29/19 10:48 12/06/19 23:21 1BromobenzeneND 30.2 6.77 ug/Sample 11/29/19 10:48 12/06/19 23:21 1BromochloromethaneND 30.2 5.20 ug/Sample 11/29/19 10:48 12/06/19 23:21 1BromodichloromethaneND 30.2 9.18 ug/Sample 11/29/19 10:48 12/06/19 23:21 1BromoformND 60.4 35.0 ug/Sample 11/29/19 10:48 12/06/19 23:21 1BromomethaneND 30.2 7.49 ug/Sample 11/29/19 10:48 12/06/19 23:21 1Carbon disulfide ND 30.2 3.99 ug/Sample 11/29/19 10:48 12/06/19 23:21 1Carbon tetrachloride ND 88.7 88.7 ug/Sample 11/29/19 10:48 12/06/19 23:21 1Carbonyl Difluoride ND 30.2 4.35 ug/Sample 11/29/19 10:48 12/06/19 23:21 1ChlorobenzeneND 30.2 6.52 ug/Sample 11/29/19 10:48 12/06/19 23:21 1ChlorodibromomethaneND 60.4 13.3 ug/Sample 11/29/19 10:48 12/06/19 23:21 1ChloroethaneND 30.2 3.50 ug/Sample 11/29/19 10:48 12/06/19 23:21 1ChloroformND 60.4 25.1 ug/Sample 11/29/19 10:48 12/06/19 23:21 1ChloromethaneND 30.2 2.42 ug/Sample 11/29/19 10:48 12/06/19 23:21 1cis-1,2-Dichloroethene ND 30.2 5.20 ug/Sample 11/29/19 10:48 12/06/19 23:21 1cis-1,3-Dichloropropene ND 30.2 2.90 ug/Sample 11/29/19 10:48 12/06/19 23:21 1DibromomethaneND 60.4 10.6 ug/Sample 11/29/19 10:48 12/06/19 23:21 1DichlorodifluoromethaneND 30.2 4.95 ug/Sample 11/29/19 10:48 12/06/19 23:21 1EthylbenzeneND 30.2 30.2 ug/Sample 11/29/19 10:48 12/06/19 23:21 1Heptafluoropropyl 1,2,2,2-tetrafluoroethyl ether 550 30.2 7.97 ug/Sample 11/29/19 10:48 12/06/19 23:21 1HexachlorobutadieneND 29.0 29.0 ug/Sample 11/29/19 10:48 12/06/19 23:21 1HFPO dimer, methyl ester as HFPO-DA ND 30.2 4.23 ug/Sample 11/29/19 10:48 12/06/19 23:21 1IsopropylbenzeneND 60.4 4.95 ug/Sample 11/29/19 10:48 12/06/19 23:21 1m,p-Xylene ND 30.2 19.3 ug/Sample 11/29/19 10:48 12/06/19 23:21 1Methylene Chloride 116 30.2 14.5 ug/Sample 11/29/19 10:48 12/06/19 23:21 1NaphthaleneND 30.2 7.73 ug/Sample 11/29/19 10:48 12/06/19 23:21 1n-Butylbenzene ND Eurofins TestAmerica, Knoxville 12/23/2019Page 29 of 89480 Client Sample Results Job ID: 140-17461-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Lab Sample ID: 140-17461-7Client Sample ID: Y-2970 R2 VEN DIV STACK MM18 IMPINGER #1 Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) RL MDL n-Propylbenzene ND 30.2 6.52 ug/Sample 11/29/19 10:48 12/06/19 23:21 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 30.2 3.14 ug/Sample 11/29/19 10:48 12/06/19 23:21 1o-Xylene ND 30.2 5.92 ug/Sample 11/29/19 10:48 12/06/19 23:21 1sec-Butylbenzene ND 30.2 6.52 ug/Sample 11/29/19 10:48 12/06/19 23:21 1StyreneND 30.2 5.32 ug/Sample 11/29/19 10:48 12/06/19 23:21 1tert-Butylbenzene ND 30.2 3.99 ug/Sample 11/29/19 10:48 12/06/19 23:21 1TetrachloroetheneND 30.2 5.56 ug/Sample 11/29/19 10:48 12/06/19 23:21 1TolueneND 30.2 3.14 ug/Sample 11/29/19 10:48 12/06/19 23:21 1trans-1,2-Dichloroethene ND 30.2 10.6 ug/Sample 11/29/19 10:48 12/06/19 23:21 1trans-1,3-Dichloropropene ND 30.2 2.17 ug/Sample 11/29/19 10:48 12/06/19 23:21 1TrichloroetheneND 60.4 5.80 ug/Sample 11/29/19 10:48 12/06/19 23:21 1TrichlorofluoromethaneND * 60.4 14.5 ug/Sample 11/29/19 10:48 12/06/19 23:21 1Vinyl chloride ND Unknown 275 T J ug/Sample 1.13 11/29/19 10:48 12/06/19 23:21 1 Tentatively Identified Compound Dil FacAnalyzedPreparedUnit DQualifierEst. Result CAS No.RT 112/06/19 23:2111/29/19 10:48T JUnknown2960 ug/Sample 1.18 112/06/19 23:2111/29/19 10:48T JUnknown57.2 ug/Sample 1.22 112/06/19 23:2111/29/19 10:48T JUnknown229 ug/Sample 2.12 112/06/19 23:2111/29/19 10:48T JUnknown104 ug/Sample 2.50 112/06/19 23:2111/29/19 10:48T J NCyclohexane 110-82-736.3 ug/Sample 4.42 1,2-Dichloroethane-d4 (Surr)118 70 -160 11/29/19 10:48 12/06/19 23:21 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery 4-Bromofluorobenzene (Surr)109 11/29/19 10:48 12/06/19 23:21 157-152 Dibromofluoromethane (Surr)105 11/29/19 10:48 12/06/19 23:21 162-134 Toluene-d8 (Surr)96 11/29/19 10:48 12/06/19 23:21 171-139 Method: 9056 - Anions, Ion Chromatography RL MDL Total Fluorine 6490 6440 3220 ug/Sample 11/29/19 10:48 12/12/19 00:11 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 2660 1210 ug/Sample 11/29/19 10:48 12/18/19 09:46 20Hydrogen Fluoride ND General Chemistry RL MDL pH 4.00 HF SU 12/13/19 15:01 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Lab Sample ID: 140-17461-8Client Sample ID: Y-2971 R2 VEN DIV STACK MM18 IMPINGER #2 Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) RL MDL 1,1,1,2-Tetrachloroethane ND 29.6 3.90 ug/Sample 11/29/19 10:48 12/06/19 23:46 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 59.1 5.91 ug/Sample 11/29/19 10:48 12/06/19 23:46 11,1,1,3,3-Pentafluorobutane ND 29.6 4.26 ug/Sample 11/29/19 10:48 12/06/19 23:46 11,1,1-Trichloroethane ND 59.1 11.7 ug/Sample 11/29/19 10:48 12/06/19 23:46 11,1,1-Trifluoro-2,2-dichloroethane ND Eurofins TestAmerica, Knoxville 12/23/2019Page 30 of 89481 Client Sample Results Job ID: 140-17461-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Lab Sample ID: 140-17461-8Client Sample ID: Y-2971 R2 VEN DIV STACK MM18 IMPINGER #2 Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) RL MDL 1,1,1-Trifluoroethane ND 59.1 5.91 ug/Sample 11/29/19 10:48 12/06/19 23:46 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 29.6 5.67 ug/Sample 11/29/19 10:48 12/06/19 23:46 11,1,2,2-Tetrachloroethane ND 59.1 3.31 ug/Sample 11/29/19 10:48 12/06/19 23:46 11,1,2-Trichloro-1,2,2-trifluoroethane ND 59.1 5.91 ug/Sample 11/29/19 10:48 12/06/19 23:46 11,1,2-trichloro-1-fluoroethane ND 29.6 3.07 ug/Sample 11/29/19 10:48 12/06/19 23:46 11,1,2-Trichloroethane ND 59.1 29.6 ug/Sample 11/29/19 10:48 12/06/19 23:46 11,1-Dichloro-1-fluoroethane ND 59.1 5.91 ug/Sample 11/29/19 10:48 12/06/19 23:46 11,1-dichloro-2,2-difluoroethane ND 59.1 5.91 ug/Sample 11/29/19 10:48 12/06/19 23:46 11,1-dichloro-2,2-difluoroethene ND 29.6 3.55 ug/Sample 11/29/19 10:48 12/06/19 23:46 11,1-Dichloroethane ND 29.6 4.37 ug/Sample 11/29/19 10:48 12/06/19 23:46 11,1-Dichloroethene ND 29.6 3.19 ug/Sample 11/29/19 10:48 12/06/19 23:46 11,1-Dichloropropene ND 591 591 ug/Sample 11/29/19 10:48 12/06/19 23:46 11,1-Difluoroethene ND 59.1 5.91 ug/Sample 11/29/19 10:48 12/06/19 23:46 11,2,2-trichloro-1,1-difluoroethane ND 29.6 9.46 ug/Sample 11/29/19 10:48 12/06/19 23:46 11,2,3-Trichlorobenzene ND 29.6 7.33 ug/Sample 11/29/19 10:48 12/06/19 23:46 11,2,3-Trichloropropane ND 29.6 9.93 ug/Sample 11/29/19 10:48 12/06/19 23:46 11,2,4-Trichlorobenzene ND 29.6 6.15 ug/Sample 11/29/19 10:48 12/06/19 23:46 11,2,4-Trimethylbenzene ND 59.1 10.4 ug/Sample 11/29/19 10:48 12/06/19 23:46 11,2-Dibromo-3-Chloropropane ND 29.6 3.90 ug/Sample 11/29/19 10:48 12/06/19 23:46 11,2-Dibromoethane (EDB)ND 59.1 5.91 ug/Sample 11/29/19 10:48 12/06/19 23:46 11,2-dichloro-1,1-difluoroethane ND 29.6 5.20 ug/Sample 11/29/19 10:48 12/06/19 23:46 11,2-Dichlorobenzene ND 29.6 4.96 ug/Sample 11/29/19 10:48 12/06/19 23:46 11,2-Dichloroethane ND 29.6 2.96 ug/Sample 11/29/19 10:48 12/06/19 23:46 11,2-Dichloropropane ND 29.6 6.15 ug/Sample 11/29/19 10:48 12/06/19 23:46 11,3,5-Trimethylbenzene ND 29.6 5.08 ug/Sample 11/29/19 10:48 12/06/19 23:46 11,3-Dichlorobenzene ND 29.6 3.31 ug/Sample 11/29/19 10:48 12/06/19 23:46 11,3-Dichloropropane ND 29.6 5.91 ug/Sample 11/29/19 10:48 12/06/19 23:46 11,4-Dichlorobenzene ND 59.1 6.03 ug/Sample 11/29/19 10:48 12/06/19 23:46 11-Chloro-1,1-difluoroethane ND 59.1 5.91 ug/Sample 11/29/19 10:48 12/06/19 23:46 12,2-dichloro-1,1-difluoroethylmethyl ether ND 29.6 8.63 ug/Sample 11/29/19 10:48 12/06/19 23:46 12,2-Dichloropropane ND 118 18.9 ug/Sample 11/29/19 10:48 12/06/19 23:46 12-Butanone (MEK)ND 59.1 8.75 ug/Sample 11/29/19 10:48 12/06/19 23:46 12-chloro-1,1,1,4,4,4-hexafluoro-2-but ene ND 59.1 5.91 ug/Sample 11/29/19 10:48 12/06/19 23:46 12-Chloro-1,1,1-Trifluoroethane ND 29.6 5.56 ug/Sample 11/29/19 10:48 12/06/19 23:46 12-Chlorotoluene ND 118 27.2 ug/Sample 11/29/19 10:48 12/06/19 23:46 12-Hexanone ND 25.9 25.9 ug/Sample 11/29/19 10:48 12/06/19 23:46 12-MTP as HFPO 610 29.6 6.15 ug/Sample 11/29/19 10:48 12/06/19 23:46 14-Chlorotoluene ND 29.6 7.92 ug/Sample 11/29/19 10:48 12/06/19 23:46 14-Isopropyltoluene ND 118 18.9 ug/Sample 11/29/19 10:48 12/06/19 23:46 14-Methyl-2-pentanone (MIBK)ND 118 69.7 ug/Sample 11/29/19 10:48 12/06/19 23:46 1AcetoneND 29.6 5.67 ug/Sample 11/29/19 10:48 12/06/19 23:46 1BenzeneND 29.6 4.14 ug/Sample 11/29/19 10:48 12/06/19 23:46 1BromobenzeneND 29.6 6.62 ug/Sample 11/29/19 10:48 12/06/19 23:46 1BromochloromethaneND 29.6 5.08 ug/Sample 11/29/19 10:48 12/06/19 23:46 1BromodichloromethaneND 29.6 8.98 ug/Sample 11/29/19 10:48 12/06/19 23:46 1BromoformND 59.1 34.3 ug/Sample 11/29/19 10:48 12/06/19 23:46 1BromomethaneND Eurofins TestAmerica, Knoxville 12/23/2019Page 31 of 89482 Client Sample Results Job ID: 140-17461-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Lab Sample ID: 140-17461-8Client Sample ID: Y-2971 R2 VEN DIV STACK MM18 IMPINGER #2 Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) RL MDL Carbon disulfide ND 29.6 7.33 ug/Sample 11/29/19 10:48 12/06/19 23:46 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 29.6 3.90 ug/Sample 11/29/19 10:48 12/06/19 23:46 1Carbon tetrachloride ND 86.5 86.5 ug/Sample 11/29/19 10:48 12/06/19 23:46 1Carbonyl Difluoride ND 29.6 4.26 ug/Sample 11/29/19 10:48 12/06/19 23:46 1ChlorobenzeneND 29.6 6.38 ug/Sample 11/29/19 10:48 12/06/19 23:46 1ChlorodibromomethaneND 59.1 13.0 ug/Sample 11/29/19 10:48 12/06/19 23:46 1ChloroethaneND 29.6 3.43 ug/Sample 11/29/19 10:48 12/06/19 23:46 1ChloroformND 59.1 24.6 ug/Sample 11/29/19 10:48 12/06/19 23:46 1ChloromethaneND 29.6 2.36 ug/Sample 11/29/19 10:48 12/06/19 23:46 1cis-1,2-Dichloroethene ND 29.6 5.08 ug/Sample 11/29/19 10:48 12/06/19 23:46 1cis-1,3-Dichloropropene ND 29.6 2.84 ug/Sample 11/29/19 10:48 12/06/19 23:46 1DibromomethaneND 59.1 10.4 ug/Sample 11/29/19 10:48 12/06/19 23:46 1DichlorodifluoromethaneND 29.6 4.85 ug/Sample 11/29/19 10:48 12/06/19 23:46 1EthylbenzeneND 29.6 29.6 ug/Sample 11/29/19 10:48 12/06/19 23:46 1Heptafluoropropyl 1,2,2,2-tetrafluoroethyl ether 193 29.6 7.80 ug/Sample 11/29/19 10:48 12/06/19 23:46 1HexachlorobutadieneND 28.4 28.4 ug/Sample 11/29/19 10:48 12/06/19 23:46 1HFPO dimer, methyl ester as HFPO-DA ND 29.6 4.14 ug/Sample 11/29/19 10:48 12/06/19 23:46 1IsopropylbenzeneND 59.1 4.85 ug/Sample 11/29/19 10:48 12/06/19 23:46 1m,p-Xylene ND 29.6 18.9 ug/Sample 11/29/19 10:48 12/06/19 23:46 1Methylene Chloride ND 29.6 14.2 ug/Sample 11/29/19 10:48 12/06/19 23:46 1NaphthaleneND 29.6 7.57 ug/Sample 11/29/19 10:48 12/06/19 23:46 1n-Butylbenzene ND 29.6 6.38 ug/Sample 11/29/19 10:48 12/06/19 23:46 1n-Propylbenzene ND 29.6 3.07 ug/Sample 11/29/19 10:48 12/06/19 23:46 1o-Xylene ND 29.6 5.79 ug/Sample 11/29/19 10:48 12/06/19 23:46 1sec-Butylbenzene ND 29.6 6.38 ug/Sample 11/29/19 10:48 12/06/19 23:46 1StyreneND 29.6 5.20 ug/Sample 11/29/19 10:48 12/06/19 23:46 1tert-Butylbenzene ND 29.6 3.90 ug/Sample 11/29/19 10:48 12/06/19 23:46 1TetrachloroetheneND 29.6 5.44 ug/Sample 11/29/19 10:48 12/06/19 23:46 1TolueneND 29.6 3.07 ug/Sample 11/29/19 10:48 12/06/19 23:46 1trans-1,2-Dichloroethene ND 29.6 10.4 ug/Sample 11/29/19 10:48 12/06/19 23:46 1trans-1,3-Dichloropropene ND 29.6 2.13 ug/Sample 11/29/19 10:48 12/06/19 23:46 1TrichloroetheneND 59.1 5.67 ug/Sample 11/29/19 10:48 12/06/19 23:46 1TrichlorofluoromethaneND * 59.1 14.2 ug/Sample 11/29/19 10:48 12/06/19 23:46 1Vinyl chloride ND Unknown 341 T J ug/Sample 1.13 11/29/19 10:48 12/06/19 23:46 1 Tentatively Identified Compound Dil FacAnalyzedPreparedUnit DQualifierEst. Result CAS No.RT 112/06/19 23:4611/29/19 10:48T JUnknown2160 ug/Sample 1.19 112/06/19 23:4611/29/19 10:48T J NPropane, 1,1,1,2,2,3,3-heptafluoro-3- [(trifluoroethenyl)oxy] 1623-05-849.7 ug/Sample 1.22 112/06/19 23:4611/29/19 10:48T J NCyclohexane 110-82-739.7 ug/Sample 4.42 112/06/19 23:4611/29/19 10:48T J NCyclotetrasiloxane, octamethyl-556-67-231.6 ug/Sample 8.78 112/06/19 23:4611/29/19 10:48T J NSalicylic acid, 2TMS derivative 3789-85-330.7 ug/Sample 11.36 112/06/19 23:4611/29/19 10:48T JUnknown56.3 ug/Sample 13.17 1,2-Dichloroethane-d4 (Surr)115 70 -160 11/29/19 10:48 12/06/19 23:46 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Eurofins TestAmerica, Knoxville 12/23/2019Page 32 of 89483 Client Sample Results Job ID: 140-17461-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Lab Sample ID: 140-17461-8Client Sample ID: Y-2971 R2 VEN DIV STACK MM18 IMPINGER #2 Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) 4-Bromofluorobenzene (Surr)110 57 -152 11/29/19 10:48 12/06/19 23:46 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)104 11/29/19 10:48 12/06/19 23:46 162-134 Toluene-d8 (Surr)97 11/29/19 10:48 12/06/19 23:46 171-139 Method: 9056 - Anions, Ion Chromatography RL MDL Total Fluorine 24300 6380 3190 ug/Sample 11/29/19 10:48 12/13/19 18:43 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 2600 1180 ug/Sample 11/29/19 10:48 12/18/19 10:09 20Hydrogen Fluoride ND General Chemistry RL MDL pH 4.00 HF SU 12/13/19 15:01 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Lab Sample ID: 140-17461-9Client Sample ID: Y-2972 R2 VEN DIV STACK MM18 IMPINGER #3 Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) RL MDL 1,1,1,2-Tetrachloroethane ND H 30.8 4.06 ug/Sample 11/29/19 10:48 12/07/19 00:10 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 61.5 6.15 ug/Sample 11/29/19 10:48 12/07/19 00:10 11,1,1,3,3-Pentafluorobutane ND H 30.8 4.43 ug/Sample 11/29/19 10:48 12/07/19 00:10 11,1,1-Trichloroethane ND H 61.5 12.2 ug/Sample 11/29/19 10:48 12/07/19 00:10 11,1,1-Trifluoro-2,2-dichloroethane ND H 61.5 6.15 ug/Sample 11/29/19 10:48 12/07/19 00:10 11,1,1-Trifluoroethane ND H 30.8 5.91 ug/Sample 11/29/19 10:48 12/07/19 00:10 11,1,2,2-Tetrachloroethane ND H 61.5 3.45 ug/Sample 11/29/19 10:48 12/07/19 00:10 11,1,2-Trichloro-1,2,2-trifluoroethane ND H 61.5 6.15 ug/Sample 11/29/19 10:48 12/07/19 00:10 11,1,2-trichloro-1-fluoroethane ND H 30.8 3.20 ug/Sample 11/29/19 10:48 12/07/19 00:10 11,1,2-Trichloroethane ND H 61.5 30.8 ug/Sample 11/29/19 10:48 12/07/19 00:10 11,1-Dichloro-1-fluoroethane ND H 61.5 6.15 ug/Sample 11/29/19 10:48 12/07/19 00:10 11,1-dichloro-2,2-difluoroethane ND H 61.5 6.15 ug/Sample 11/29/19 10:48 12/07/19 00:10 11,1-dichloro-2,2-difluoroethene ND H 30.8 3.69 ug/Sample 11/29/19 10:48 12/07/19 00:10 11,1-Dichloroethane ND H 30.8 4.55 ug/Sample 11/29/19 10:48 12/07/19 00:10 11,1-Dichloroethene ND H 30.8 3.32 ug/Sample 11/29/19 10:48 12/07/19 00:10 11,1-Dichloropropene ND H 615 615 ug/Sample 11/29/19 10:48 12/07/19 00:10 11,1-Difluoroethene ND H 61.5 6.15 ug/Sample 11/29/19 10:48 12/07/19 00:10 11,2,2-trichloro-1,1-difluoroethane ND H 30.8 9.85 ug/Sample 11/29/19 10:48 12/07/19 00:10 11,2,3-Trichlorobenzene ND H 30.8 7.63 ug/Sample 11/29/19 10:48 12/07/19 00:10 11,2,3-Trichloropropane ND H 30.8 10.3 ug/Sample 11/29/19 10:48 12/07/19 00:10 11,2,4-Trichlorobenzene ND H 30.8 6.40 ug/Sample 11/29/19 10:48 12/07/19 00:10 11,2,4-Trimethylbenzene ND H 61.5 10.8 ug/Sample 11/29/19 10:48 12/07/19 00:10 11,2-Dibromo-3-Chloropropane ND H 30.8 4.06 ug/Sample 11/29/19 10:48 12/07/19 00:10 11,2-Dibromoethane (EDB)ND H 61.5 6.15 ug/Sample 11/29/19 10:48 12/07/19 00:10 11,2-dichloro-1,1-difluoroethane ND H 30.8 5.42 ug/Sample 11/29/19 10:48 12/07/19 00:10 11,2-Dichlorobenzene ND H 30.8 5.17 ug/Sample 11/29/19 10:48 12/07/19 00:10 11,2-Dichloroethane ND H Eurofins TestAmerica, Knoxville 12/23/2019Page 33 of 89484 Client Sample Results Job ID: 140-17461-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Lab Sample ID: 140-17461-9Client Sample ID: Y-2972 R2 VEN DIV STACK MM18 IMPINGER #3 Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) RL MDL 1,2-Dichloropropane ND H 30.8 3.08 ug/Sample 11/29/19 10:48 12/07/19 00:10 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 30.8 6.40 ug/Sample 11/29/19 10:48 12/07/19 00:10 11,3,5-Trimethylbenzene ND H 30.8 5.29 ug/Sample 11/29/19 10:48 12/07/19 00:10 11,3-Dichlorobenzene ND H 30.8 3.45 ug/Sample 11/29/19 10:48 12/07/19 00:10 11,3-Dichloropropane ND H 30.8 6.15 ug/Sample 11/29/19 10:48 12/07/19 00:10 11,4-Dichlorobenzene ND H 61.5 6.28 ug/Sample 11/29/19 10:48 12/07/19 00:10 11-Chloro-1,1-difluoroethane ND H 61.5 6.15 ug/Sample 11/29/19 10:48 12/07/19 00:10 12,2-dichloro-1,1-difluoroethylmethyl ether ND H 30.8 8.98 ug/Sample 11/29/19 10:48 12/07/19 00:10 12,2-Dichloropropane ND H 123 19.7 ug/Sample 11/29/19 10:48 12/07/19 00:10 12-Butanone (MEK)ND H 61.5 9.11 ug/Sample 11/29/19 10:48 12/07/19 00:10 12-chloro-1,1,1,4,4,4-hexafluoro-2-but ene ND H 61.5 6.15 ug/Sample 11/29/19 10:48 12/07/19 00:10 12-Chloro-1,1,1-Trifluoroethane ND H 30.8 5.78 ug/Sample 11/29/19 10:48 12/07/19 00:10 12-Chlorotoluene ND H 123 28.3 ug/Sample 11/29/19 10:48 12/07/19 00:10 12-Hexanone ND H 26.9 26.9 ug/Sample 11/29/19 10:48 12/07/19 00:10 12-MTP as HFPO 609 H 30.8 6.40 ug/Sample 11/29/19 10:48 12/07/19 00:10 14-Chlorotoluene ND H 30.8 8.25 ug/Sample 11/29/19 10:48 12/07/19 00:10 14-Isopropyltoluene ND H 123 19.7 ug/Sample 11/29/19 10:48 12/07/19 00:10 14-Methyl-2-pentanone (MIBK)ND H 123 72.6 ug/Sample 11/29/19 10:48 12/07/19 00:10 1AcetoneND H 30.8 5.91 ug/Sample 11/29/19 10:48 12/07/19 00:10 1BenzeneND H 30.8 4.31 ug/Sample 11/29/19 10:48 12/07/19 00:10 1BromobenzeneND H 30.8 6.89 ug/Sample 11/29/19 10:48 12/07/19 00:10 1BromochloromethaneND H 30.8 5.29 ug/Sample 11/29/19 10:48 12/07/19 00:10 1BromodichloromethaneND H 30.8 9.35 ug/Sample 11/29/19 10:48 12/07/19 00:10 1BromoformND H 61.5 35.7 ug/Sample 11/29/19 10:48 12/07/19 00:10 1BromomethaneND H 30.8 7.63 ug/Sample 11/29/19 10:48 12/07/19 00:10 1Carbon disulfide ND H 30.8 4.06 ug/Sample 11/29/19 10:48 12/07/19 00:10 1Carbon tetrachloride ND H 90.1 90.1 ug/Sample 11/29/19 10:48 12/07/19 00:10 1Carbonyl Difluoride ND H 30.8 4.43 ug/Sample 11/29/19 10:48 12/07/19 00:10 1ChlorobenzeneND H 30.8 6.65 ug/Sample 11/29/19 10:48 12/07/19 00:10 1ChlorodibromomethaneND H 61.5 13.5 ug/Sample 11/29/19 10:48 12/07/19 00:10 1ChloroethaneND H 30.8 3.57 ug/Sample 11/29/19 10:48 12/07/19 00:10 1ChloroformND H 61.5 25.6 ug/Sample 11/29/19 10:48 12/07/19 00:10 1ChloromethaneND H 30.8 2.46 ug/Sample 11/29/19 10:48 12/07/19 00:10 1cis-1,2-Dichloroethene ND H 30.8 5.29 ug/Sample 11/29/19 10:48 12/07/19 00:10 1cis-1,3-Dichloropropene ND H 30.8 2.95 ug/Sample 11/29/19 10:48 12/07/19 00:10 1DibromomethaneND H 61.5 10.8 ug/Sample 11/29/19 10:48 12/07/19 00:10 1DichlorodifluoromethaneND H 30.8 5.05 ug/Sample 11/29/19 10:48 12/07/19 00:10 1EthylbenzeneND H 30.8 30.8 ug/Sample 11/29/19 10:48 12/07/19 00:10 1Heptafluoropropyl 1,2,2,2-tetrafluoroethyl ether ND H 30.8 8.12 ug/Sample 11/29/19 10:48 12/07/19 00:10 1HexachlorobutadieneND H 29.5 29.5 ug/Sample 11/29/19 10:48 12/07/19 00:10 1HFPO dimer, methyl ester as HFPO-DA ND H 30.8 4.31 ug/Sample 11/29/19 10:48 12/07/19 00:10 1IsopropylbenzeneND H 61.5 5.05 ug/Sample 11/29/19 10:48 12/07/19 00:10 1m,p-Xylene ND H 30.8 19.7 ug/Sample 11/29/19 10:48 12/07/19 00:10 1Methylene Chloride ND H 30.8 14.8 ug/Sample 11/29/19 10:48 12/07/19 00:10 1NaphthaleneND H Eurofins TestAmerica, Knoxville 12/23/2019Page 34 of 89485 Client Sample Results Job ID: 140-17461-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Lab Sample ID: 140-17461-9Client Sample ID: Y-2972 R2 VEN DIV STACK MM18 IMPINGER #3 Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) RL MDL n-Butylbenzene ND H 30.8 7.88 ug/Sample 11/29/19 10:48 12/07/19 00:10 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 30.8 6.65 ug/Sample 11/29/19 10:48 12/07/19 00:10 1n-Propylbenzene ND H 30.8 3.20 ug/Sample 11/29/19 10:48 12/07/19 00:10 1o-Xylene ND H 30.8 6.03 ug/Sample 11/29/19 10:48 12/07/19 00:10 1sec-Butylbenzene ND H 30.8 6.65 ug/Sample 11/29/19 10:48 12/07/19 00:10 1StyreneND H 30.8 5.42 ug/Sample 11/29/19 10:48 12/07/19 00:10 1tert-Butylbenzene ND H 30.8 4.06 ug/Sample 11/29/19 10:48 12/07/19 00:10 1TetrachloroetheneND H 30.8 5.66 ug/Sample 11/29/19 10:48 12/07/19 00:10 1TolueneND H 30.8 3.20 ug/Sample 11/29/19 10:48 12/07/19 00:10 1trans-1,2-Dichloroethene ND H 30.8 10.8 ug/Sample 11/29/19 10:48 12/07/19 00:10 1trans-1,3-Dichloropropene ND H 30.8 2.22 ug/Sample 11/29/19 10:48 12/07/19 00:10 1TrichloroetheneND H 61.5 5.91 ug/Sample 11/29/19 10:48 12/07/19 00:10 1TrichlorofluoromethaneND H * 61.5 14.8 ug/Sample 11/29/19 10:48 12/07/19 00:10 1Vinyl chloride ND H Unknown 490 T H J ug/Sample 1.13 11/29/19 10:48 12/07/19 00:10 1 Tentatively Identified Compound Dil FacAnalyzedPreparedUnit DQualifierEst. Result CAS No.RT 112/07/19 00:1011/29/19 10:48T H J NPropane, 1,1,1,2,2,3,3-heptafluoro-3- [(trifluoroethenyl)oxy] 1623-05-82290ug/Sample 1.18 112/07/19 00:1011/29/19 10:48T H J NPropane, 1,1,1,2,2,3,3-heptafluoro-3- [(trifluoroethenyl)oxy] 1623-05-841.0 ug/Sample 1.22 112/07/19 00:1011/29/19 10:48T H J NCyclohexane 110-82-742.6 ug/Sample 4.42 1,2-Dichloroethane-d4 (Surr)118 70 -160 11/29/19 10:48 12/07/19 00:10 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery 4-Bromofluorobenzene (Surr)109 11/29/19 10:48 12/07/19 00:10 157-152 Dibromofluoromethane (Surr)104 11/29/19 10:48 12/07/19 00:10 162-134 Toluene-d8 (Surr)97 11/29/19 10:48 12/07/19 00:10 171-139 Method: 9056 - Anions, Ion Chromatography RL MDL Total Fluorine 3770 J 6560 3280 ug/Sample 11/29/19 10:48 12/13/19 19:45 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 2710 1230 ug/Sample 11/29/19 10:48 12/18/19 11:11 20Hydrogen Fluoride ND General Chemistry RL MDL pH 4.00 HF SU 12/13/19 15:01 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Lab Sample ID: 140-17461-10Client Sample ID: Y-2973 R2 VEN DIV STACK MM18 IMPINGER #4 Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) RL MDL 1,1,1,2-Tetrachloroethane ND H 30.4 4.01 ug/Sample 11/29/19 10:48 12/07/19 00:35 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 60.8 6.08 ug/Sample 11/29/19 10:48 12/07/19 00:35 11,1,1,3,3-Pentafluorobutane ND H 30.4 4.38 ug/Sample 11/29/19 10:48 12/07/19 00:35 11,1,1-Trichloroethane ND H 60.8 12.0 ug/Sample 11/29/19 10:48 12/07/19 00:35 11,1,1-Trifluoro-2,2-dichloroethane ND H Eurofins TestAmerica, Knoxville 12/23/2019Page 35 of 89486 Client Sample Results Job ID: 140-17461-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Lab Sample ID: 140-17461-10Client Sample ID: Y-2973 R2 VEN DIV STACK MM18 IMPINGER #4 Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) RL MDL 1,1,1-Trifluoroethane ND H 60.8 6.08 ug/Sample 11/29/19 10:48 12/07/19 00:35 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 30.4 5.84 ug/Sample 11/29/19 10:48 12/07/19 00:35 11,1,2,2-Tetrachloroethane ND H 60.8 3.41 ug/Sample 11/29/19 10:48 12/07/19 00:35 11,1,2-Trichloro-1,2,2-trifluoroethane ND H 60.8 6.08 ug/Sample 11/29/19 10:48 12/07/19 00:35 11,1,2-trichloro-1-fluoroethane ND H 30.4 3.16 ug/Sample 11/29/19 10:48 12/07/19 00:35 11,1,2-Trichloroethane ND H 60.8 30.4 ug/Sample 11/29/19 10:48 12/07/19 00:35 11,1-Dichloro-1-fluoroethane ND H 60.8 6.08 ug/Sample 11/29/19 10:48 12/07/19 00:35 11,1-dichloro-2,2-difluoroethane ND H 60.8 6.08 ug/Sample 11/29/19 10:48 12/07/19 00:35 11,1-dichloro-2,2-difluoroethene ND H 30.4 3.65 ug/Sample 11/29/19 10:48 12/07/19 00:35 11,1-Dichloroethane ND H 30.4 4.50 ug/Sample 11/29/19 10:48 12/07/19 00:35 11,1-Dichloroethene ND H 30.4 3.28 ug/Sample 11/29/19 10:48 12/07/19 00:35 11,1-Dichloropropene ND H 608 608 ug/Sample 11/29/19 10:48 12/07/19 00:35 11,1-Difluoroethene ND H 60.8 6.08 ug/Sample 11/29/19 10:48 12/07/19 00:35 11,2,2-trichloro-1,1-difluoroethane ND H 30.4 9.73 ug/Sample 11/29/19 10:48 12/07/19 00:35 11,2,3-Trichlorobenzene ND H 30.4 7.54 ug/Sample 11/29/19 10:48 12/07/19 00:35 11,2,3-Trichloropropane ND H 30.4 10.2 ug/Sample 11/29/19 10:48 12/07/19 00:35 11,2,4-Trichlorobenzene ND H 30.4 6.32 ug/Sample 11/29/19 10:48 12/07/19 00:35 11,2,4-Trimethylbenzene ND H 60.8 10.7 ug/Sample 11/29/19 10:48 12/07/19 00:35 11,2-Dibromo-3-Chloropropane ND H 30.4 4.01 ug/Sample 11/29/19 10:48 12/07/19 00:35 11,2-Dibromoethane (EDB)ND H 60.8 6.08 ug/Sample 11/29/19 10:48 12/07/19 00:35 11,2-dichloro-1,1-difluoroethane ND H 30.4 5.35 ug/Sample 11/29/19 10:48 12/07/19 00:35 11,2-Dichlorobenzene ND H 30.4 5.11 ug/Sample 11/29/19 10:48 12/07/19 00:35 11,2-Dichloroethane ND H 30.4 3.04 ug/Sample 11/29/19 10:48 12/07/19 00:35 11,2-Dichloropropane ND H 30.4 6.32 ug/Sample 11/29/19 10:48 12/07/19 00:35 11,3,5-Trimethylbenzene ND H 30.4 5.23 ug/Sample 11/29/19 10:48 12/07/19 00:35 11,3-Dichlorobenzene ND H 30.4 3.41 ug/Sample 11/29/19 10:48 12/07/19 00:35 11,3-Dichloropropane ND H 30.4 6.08 ug/Sample 11/29/19 10:48 12/07/19 00:35 11,4-Dichlorobenzene ND H 60.8 6.20 ug/Sample 11/29/19 10:48 12/07/19 00:35 11-Chloro-1,1-difluoroethane ND H 60.8 6.08 ug/Sample 11/29/19 10:48 12/07/19 00:35 12,2-dichloro-1,1-difluoroethylmethyl ether ND H 30.4 8.88 ug/Sample 11/29/19 10:48 12/07/19 00:35 12,2-Dichloropropane ND H 122 19.5 ug/Sample 11/29/19 10:48 12/07/19 00:35 12-Butanone (MEK)ND H 60.8 9.00 ug/Sample 11/29/19 10:48 12/07/19 00:35 12-chloro-1,1,1,4,4,4-hexafluoro-2-but ene ND H 60.8 6.08 ug/Sample 11/29/19 10:48 12/07/19 00:35 12-Chloro-1,1,1-Trifluoroethane ND H 30.4 5.72 ug/Sample 11/29/19 10:48 12/07/19 00:35 12-Chlorotoluene ND H 122 28.0 ug/Sample 11/29/19 10:48 12/07/19 00:35 12-Hexanone ND H 26.6 26.6 ug/Sample 11/29/19 10:48 12/07/19 00:35 12-MTP as HFPO 629 H 30.4 6.32 ug/Sample 11/29/19 10:48 12/07/19 00:35 14-Chlorotoluene ND H 30.4 8.15 ug/Sample 11/29/19 10:48 12/07/19 00:35 14-Isopropyltoluene ND H 122 19.5 ug/Sample 11/29/19 10:48 12/07/19 00:35 14-Methyl-2-pentanone (MIBK)ND H 122 71.8 ug/Sample 11/29/19 10:48 12/07/19 00:35 1AcetoneND H 30.4 5.84 ug/Sample 11/29/19 10:48 12/07/19 00:35 1BenzeneND H 30.4 4.26 ug/Sample 11/29/19 10:48 12/07/19 00:35 1BromobenzeneND H 30.4 6.81 ug/Sample 11/29/19 10:48 12/07/19 00:35 1BromochloromethaneND H 30.4 5.23 ug/Sample 11/29/19 10:48 12/07/19 00:35 1BromodichloromethaneND H 30.4 9.24 ug/Sample 11/29/19 10:48 12/07/19 00:35 1BromoformND H 60.8 35.3 ug/Sample 11/29/19 10:48 12/07/19 00:35 1BromomethaneND H Eurofins TestAmerica, Knoxville 12/23/2019Page 36 of 89487 Client Sample Results Job ID: 140-17461-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Lab Sample ID: 140-17461-10Client Sample ID: Y-2973 R2 VEN DIV STACK MM18 IMPINGER #4 Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) RL MDL Carbon disulfide ND H 30.4 7.54 ug/Sample 11/29/19 10:48 12/07/19 00:35 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 30.4 4.01 ug/Sample 11/29/19 10:48 12/07/19 00:35 1Carbon tetrachloride ND H 89.4 89.4 ug/Sample 11/29/19 10:48 12/07/19 00:35 1Carbonyl Difluoride ND H 30.4 4.38 ug/Sample 11/29/19 10:48 12/07/19 00:35 1ChlorobenzeneND H 30.4 6.57 ug/Sample 11/29/19 10:48 12/07/19 00:35 1ChlorodibromomethaneND H 60.8 13.4 ug/Sample 11/29/19 10:48 12/07/19 00:35 1ChloroethaneND H 30.4 3.53 ug/Sample 11/29/19 10:48 12/07/19 00:35 1ChloroformND H 60.8 25.3 ug/Sample 11/29/19 10:48 12/07/19 00:35 1ChloromethaneND H 30.4 2.43 ug/Sample 11/29/19 10:48 12/07/19 00:35 1cis-1,2-Dichloroethene ND H 30.4 5.23 ug/Sample 11/29/19 10:48 12/07/19 00:35 1cis-1,3-Dichloropropene ND H 30.4 2.92 ug/Sample 11/29/19 10:48 12/07/19 00:35 1DibromomethaneND H 60.8 10.7 ug/Sample 11/29/19 10:48 12/07/19 00:35 1DichlorodifluoromethaneND H 30.4 4.99 ug/Sample 11/29/19 10:48 12/07/19 00:35 1EthylbenzeneND H 30.4 30.4 ug/Sample 11/29/19 10:48 12/07/19 00:35 1Heptafluoropropyl 1,2,2,2-tetrafluoroethyl ether ND H 30.4 8.03 ug/Sample 11/29/19 10:48 12/07/19 00:35 1HexachlorobutadieneND H 29.2 29.2 ug/Sample 11/29/19 10:48 12/07/19 00:35 1HFPO dimer, methyl ester as HFPO-DA ND H 30.4 4.26 ug/Sample 11/29/19 10:48 12/07/19 00:35 1IsopropylbenzeneND H 60.8 4.99 ug/Sample 11/29/19 10:48 12/07/19 00:35 1m,p-Xylene ND H 30.4 19.5 ug/Sample 11/29/19 10:48 12/07/19 00:35 1Methylene Chloride ND H 30.4 14.6 ug/Sample 11/29/19 10:48 12/07/19 00:35 1NaphthaleneND H 30.4 7.78 ug/Sample 11/29/19 10:48 12/07/19 00:35 1n-Butylbenzene ND H 30.4 6.57 ug/Sample 11/29/19 10:48 12/07/19 00:35 1n-Propylbenzene ND H 30.4 3.16 ug/Sample 11/29/19 10:48 12/07/19 00:35 1o-Xylene ND H 30.4 5.96 ug/Sample 11/29/19 10:48 12/07/19 00:35 1sec-Butylbenzene ND H 30.4 6.57 ug/Sample 11/29/19 10:48 12/07/19 00:35 1StyreneND H 30.4 5.35 ug/Sample 11/29/19 10:48 12/07/19 00:35 1tert-Butylbenzene ND H 30.4 4.01 ug/Sample 11/29/19 10:48 12/07/19 00:35 1TetrachloroetheneND H 30.4 5.59 ug/Sample 11/29/19 10:48 12/07/19 00:35 1TolueneND H 30.4 3.16 ug/Sample 11/29/19 10:48 12/07/19 00:35 1trans-1,2-Dichloroethene ND H 30.4 10.7 ug/Sample 11/29/19 10:48 12/07/19 00:35 1trans-1,3-Dichloropropene ND H 30.4 2.19 ug/Sample 11/29/19 10:48 12/07/19 00:35 1TrichloroetheneND H 60.8 5.84 ug/Sample 11/29/19 10:48 12/07/19 00:35 1TrichlorofluoromethaneND H * 60.8 14.6 ug/Sample 11/29/19 10:48 12/07/19 00:35 1Vinyl chloride ND H Butanoic acid, heptafluoro-, sodium salt 484 T H J N ug/Sample 1.13 2218-54-4 11/29/19 10:48 12/07/19 00:35 1 Tentatively Identified Compound Dil FacAnalyzedPreparedUnit DQualifierEst. Result CAS No.RT 112/07/19 00:3511/29/19 10:48T H JUnknown1700 ug/Sample 1.18 112/07/19 00:3511/29/19 10:48T H J NPropane, 1,1,1,2,2,3,3-heptafluoro-3- [(trifluoroethenyl)oxy] 1623-05-831.6 ug/Sample 1.22 112/07/19 00:3511/29/19 10:48T H J NCyclohexane 110-82-743.2 ug/Sample 4.42 1,2-Dichloroethane-d4 (Surr)117 70 -160 11/29/19 10:48 12/07/19 00:35 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery 4-Bromofluorobenzene (Surr)110 11/29/19 10:48 12/07/19 00:35 157-152 Dibromofluoromethane (Surr)103 11/29/19 10:48 12/07/19 00:35 162-134 Toluene-d8 (Surr)97 11/29/19 10:48 12/07/19 00:35 171-139 Eurofins TestAmerica, Knoxville 12/23/2019Page 37 of 89488 Client Sample Results Job ID: 140-17461-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Lab Sample ID: 140-17461-10Client Sample ID: Y-2973 R2 VEN DIV STACK MM18 IMPINGER #4 Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 9056 - Anions, Ion Chromatography RL MDL Total Fluorine 3540 J 6490 3240 ug/Sample 11/29/19 10:48 12/13/19 20:06 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 2680 1220 ug/Sample 11/29/19 10:48 12/18/19 12:15 20Hydrogen Fluoride ND General Chemistry RL MDL pH 4.00 HF SU 12/13/19 15:01 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Lab Sample ID: 140-17461-11Client Sample ID: Y-2974 R2 VEN DIV STACK MM18 IMPINGER #5 Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) RL MDL 1,1,1,2-Tetrachloroethane ND H 31.4 4.14 ug/Sample 11/29/19 10:48 12/07/19 00:59 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 62.7 6.27 ug/Sample 11/29/19 10:48 12/07/19 00:59 11,1,1,3,3-Pentafluorobutane ND H 31.4 4.52 ug/Sample 11/29/19 10:48 12/07/19 00:59 11,1,1-Trichloroethane ND H 62.7 12.4 ug/Sample 11/29/19 10:48 12/07/19 00:59 11,1,1-Trifluoro-2,2-dichloroethane ND H 62.7 6.27 ug/Sample 11/29/19 10:48 12/07/19 00:59 11,1,1-Trifluoroethane ND H 31.4 6.02 ug/Sample 11/29/19 10:48 12/07/19 00:59 11,1,2,2-Tetrachloroethane ND H 62.7 3.51 ug/Sample 11/29/19 10:48 12/07/19 00:59 11,1,2-Trichloro-1,2,2-trifluoroethane ND H 62.7 6.27 ug/Sample 11/29/19 10:48 12/07/19 00:59 11,1,2-trichloro-1-fluoroethane ND H 31.4 3.26 ug/Sample 11/29/19 10:48 12/07/19 00:59 11,1,2-Trichloroethane ND H 62.7 31.4 ug/Sample 11/29/19 10:48 12/07/19 00:59 11,1-Dichloro-1-fluoroethane ND H 62.7 6.27 ug/Sample 11/29/19 10:48 12/07/19 00:59 11,1-dichloro-2,2-difluoroethane ND H 62.7 6.27 ug/Sample 11/29/19 10:48 12/07/19 00:59 11,1-dichloro-2,2-difluoroethene ND H 31.4 3.76 ug/Sample 11/29/19 10:48 12/07/19 00:59 11,1-Dichloroethane ND H 31.4 4.64 ug/Sample 11/29/19 10:48 12/07/19 00:59 11,1-Dichloroethene ND H 31.4 3.39 ug/Sample 11/29/19 10:48 12/07/19 00:59 11,1-Dichloropropene ND H 627 627 ug/Sample 11/29/19 10:48 12/07/19 00:59 11,1-Difluoroethene ND H 62.7 6.27 ug/Sample 11/29/19 10:48 12/07/19 00:59 11,2,2-trichloro-1,1-difluoroethane ND H 31.4 10.0 ug/Sample 11/29/19 10:48 12/07/19 00:59 11,2,3-Trichlorobenzene ND H 31.4 7.78 ug/Sample 11/29/19 10:48 12/07/19 00:59 11,2,3-Trichloropropane ND H 31.4 10.5 ug/Sample 11/29/19 10:48 12/07/19 00:59 11,2,4-Trichlorobenzene ND H 31.4 6.53 ug/Sample 11/29/19 10:48 12/07/19 00:59 11,2,4-Trimethylbenzene ND H 62.7 11.0 ug/Sample 11/29/19 10:48 12/07/19 00:59 11,2-Dibromo-3-Chloropropane ND H 31.4 4.14 ug/Sample 11/29/19 10:48 12/07/19 00:59 11,2-Dibromoethane (EDB)ND H 62.7 6.27 ug/Sample 11/29/19 10:48 12/07/19 00:59 11,2-dichloro-1,1-difluoroethane ND H 31.4 5.52 ug/Sample 11/29/19 10:48 12/07/19 00:59 11,2-Dichlorobenzene ND H 31.4 5.27 ug/Sample 11/29/19 10:48 12/07/19 00:59 11,2-Dichloroethane ND H 31.4 3.14 ug/Sample 11/29/19 10:48 12/07/19 00:59 11,2-Dichloropropane ND H 31.4 6.53 ug/Sample 11/29/19 10:48 12/07/19 00:59 11,3,5-Trimethylbenzene ND H 31.4 5.40 ug/Sample 11/29/19 10:48 12/07/19 00:59 11,3-Dichlorobenzene ND H 31.4 3.51 ug/Sample 11/29/19 10:48 12/07/19 00:59 11,3-Dichloropropane ND H 31.4 6.27 ug/Sample 11/29/19 10:48 12/07/19 00:59 11,4-Dichlorobenzene ND H 62.7 6.40 ug/Sample 11/29/19 10:48 12/07/19 00:59 11-Chloro-1,1-difluoroethane ND H Eurofins TestAmerica, Knoxville 12/23/2019Page 38 of 89489 Client Sample Results Job ID: 140-17461-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Lab Sample ID: 140-17461-11Client Sample ID: Y-2974 R2 VEN DIV STACK MM18 IMPINGER #5 Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) RL MDL 2,2-dichloro-1,1-difluoroethylmethyl ether ND H 62.7 6.27 ug/Sample 11/29/19 10:48 12/07/19 00:59 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 31.4 9.16 ug/Sample 11/29/19 10:48 12/07/19 00:59 12,2-Dichloropropane ND H 125 20.1 ug/Sample 11/29/19 10:48 12/07/19 00:59 12-Butanone (MEK)ND H 62.7 9.29 ug/Sample 11/29/19 10:48 12/07/19 00:59 12-chloro-1,1,1,4,4,4-hexafluoro-2-but ene ND H 62.7 6.27 ug/Sample 11/29/19 10:48 12/07/19 00:59 12-Chloro-1,1,1-Trifluoroethane ND H 31.4 5.90 ug/Sample 11/29/19 10:48 12/07/19 00:59 12-Chlorotoluene ND H 125 28.9 ug/Sample 11/29/19 10:48 12/07/19 00:59 12-Hexanone ND H 27.4 27.4 ug/Sample 11/29/19 10:48 12/07/19 00:59 12-MTP as HFPO 609 H 31.4 6.53 ug/Sample 11/29/19 10:48 12/07/19 00:59 14-Chlorotoluene ND H 31.4 8.41 ug/Sample 11/29/19 10:48 12/07/19 00:59 14-Isopropyltoluene ND H 125 20.1 ug/Sample 11/29/19 10:48 12/07/19 00:59 14-Methyl-2-pentanone (MIBK)ND H 125 74.0 ug/Sample 11/29/19 10:48 12/07/19 00:59 1AcetoneND H 31.4 6.02 ug/Sample 11/29/19 10:48 12/07/19 00:59 1BenzeneND H 31.4 4.39 ug/Sample 11/29/19 10:48 12/07/19 00:59 1BromobenzeneND H 31.4 7.03 ug/Sample 11/29/19 10:48 12/07/19 00:59 1BromochloromethaneND H 31.4 5.40 ug/Sample 11/29/19 10:48 12/07/19 00:59 1BromodichloromethaneND H 31.4 9.54 ug/Sample 11/29/19 10:48 12/07/19 00:59 1BromoformND H 62.7 36.4 ug/Sample 11/29/19 10:48 12/07/19 00:59 1BromomethaneND H 31.4 7.78 ug/Sample 11/29/19 10:48 12/07/19 00:59 1Carbon disulfide ND H 31.4 4.14 ug/Sample 11/29/19 10:48 12/07/19 00:59 1Carbon tetrachloride ND H 91.6 91.6 ug/Sample 11/29/19 10:48 12/07/19 00:59 1Carbonyl Difluoride ND H 31.4 4.52 ug/Sample 11/29/19 10:48 12/07/19 00:59 1ChlorobenzeneND H 31.4 6.78 ug/Sample 11/29/19 10:48 12/07/19 00:59 1ChlorodibromomethaneND H 62.7 13.8 ug/Sample 11/29/19 10:48 12/07/19 00:59 1ChloroethaneND H 31.4 3.64 ug/Sample 11/29/19 10:48 12/07/19 00:59 1ChloroformND H 62.7 26.1 ug/Sample 11/29/19 10:48 12/07/19 00:59 1ChloromethaneND H 31.4 2.51 ug/Sample 11/29/19 10:48 12/07/19 00:59 1cis-1,2-Dichloroethene ND H 31.4 5.40 ug/Sample 11/29/19 10:48 12/07/19 00:59 1cis-1,3-Dichloropropene ND H 31.4 3.01 ug/Sample 11/29/19 10:48 12/07/19 00:59 1DibromomethaneND H 62.7 11.0 ug/Sample 11/29/19 10:48 12/07/19 00:59 1DichlorodifluoromethaneND H 31.4 5.15 ug/Sample 11/29/19 10:48 12/07/19 00:59 1EthylbenzeneND H 31.4 31.4 ug/Sample 11/29/19 10:48 12/07/19 00:59 1Heptafluoropropyl 1,2,2,2-tetrafluoroethyl ether ND H 31.4 8.28 ug/Sample 11/29/19 10:48 12/07/19 00:59 1HexachlorobutadieneND H 30.1 30.1 ug/Sample 11/29/19 10:48 12/07/19 00:59 1HFPO dimer, methyl ester as HFPO-DA ND H 31.4 4.39 ug/Sample 11/29/19 10:48 12/07/19 00:59 1IsopropylbenzeneND H 62.7 5.15 ug/Sample 11/29/19 10:48 12/07/19 00:59 1m,p-Xylene ND H 31.4 20.1 ug/Sample 11/29/19 10:48 12/07/19 00:59 1Methylene Chloride ND H 31.4 15.1 ug/Sample 11/29/19 10:48 12/07/19 00:59 1NaphthaleneND H 31.4 8.03 ug/Sample 11/29/19 10:48 12/07/19 00:59 1n-Butylbenzene ND H 31.4 6.78 ug/Sample 11/29/19 10:48 12/07/19 00:59 1n-Propylbenzene ND H 31.4 3.26 ug/Sample 11/29/19 10:48 12/07/19 00:59 1o-Xylene ND H 31.4 6.15 ug/Sample 11/29/19 10:48 12/07/19 00:59 1sec-Butylbenzene ND H 31.4 6.78 ug/Sample 11/29/19 10:48 12/07/19 00:59 1StyreneND H 31.4 5.52 ug/Sample 11/29/19 10:48 12/07/19 00:59 1tert-Butylbenzene ND H Eurofins TestAmerica, Knoxville 12/23/2019Page 39 of 89490 Client Sample Results Job ID: 140-17461-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Lab Sample ID: 140-17461-11Client Sample ID: Y-2974 R2 VEN DIV STACK MM18 IMPINGER #5 Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) RL MDL Tetrachloroethene ND H 31.4 4.14 ug/Sample 11/29/19 10:48 12/07/19 00:59 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 31.4 5.77 ug/Sample 11/29/19 10:48 12/07/19 00:59 1TolueneND H 31.4 3.26 ug/Sample 11/29/19 10:48 12/07/19 00:59 1trans-1,2-Dichloroethene ND H 31.4 11.0 ug/Sample 11/29/19 10:48 12/07/19 00:59 1trans-1,3-Dichloropropene ND H 31.4 2.26 ug/Sample 11/29/19 10:48 12/07/19 00:59 1TrichloroetheneND H 62.7 6.02 ug/Sample 11/29/19 10:48 12/07/19 00:59 1TrichlorofluoromethaneND H * 62.7 15.1 ug/Sample 11/29/19 10:48 12/07/19 00:59 1Vinyl chloride ND H Propene, hexafluoro-421 T H J N ug/Sample 1.13 116-15-4 11/29/19 10:48 12/07/19 00:59 1 Tentatively Identified Compound Dil FacAnalyzedPreparedUnit DQualifierEst. Result CAS No.RT 112/07/19 00:5911/29/19 10:48T H JUnknown882 ug/Sample 1.18 1,2-Dichloroethane-d4 (Surr)116 70 -160 11/29/19 10:48 12/07/19 00:59 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery 4-Bromofluorobenzene (Surr)109 11/29/19 10:48 12/07/19 00:59 157-152 Dibromofluoromethane (Surr)105 11/29/19 10:48 12/07/19 00:59 162-134 Toluene-d8 (Surr)96 11/29/19 10:48 12/07/19 00:59 171-139 Method: 9056 - Anions, Ion Chromatography RL MDL Total Fluorine ND 6690 3350 ug/Sample 11/29/19 10:48 12/13/19 20:27 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 2760 1250 ug/Sample 11/29/19 10:48 12/18/19 12:38 20Hydrogen Fluoride ND General Chemistry RL MDL pH 4.00 HF SU 12/13/19 15:01 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Lab Sample ID: 140-17461-12Client Sample ID: Y-2975 R2 VEN DIV STACK MM18 IMPINGER #6 Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) RL MDL 1,1,1,2-Tetrachloroethane ND H 30.7 4.06 ug/Sample 11/29/19 10:48 12/07/19 01:24 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 61.5 6.15 ug/Sample 11/29/19 10:48 12/07/19 01:24 11,1,1,3,3-Pentafluorobutane ND H 30.7 4.43 ug/Sample 11/29/19 10:48 12/07/19 01:24 11,1,1-Trichloroethane ND H 61.5 12.2 ug/Sample 11/29/19 10:48 12/07/19 01:24 11,1,1-Trifluoro-2,2-dichloroethane ND H 61.5 6.15 ug/Sample 11/29/19 10:48 12/07/19 01:24 11,1,1-Trifluoroethane ND H 30.7 5.90 ug/Sample 11/29/19 10:48 12/07/19 01:24 11,1,2,2-Tetrachloroethane ND H 61.5 3.44 ug/Sample 11/29/19 10:48 12/07/19 01:24 11,1,2-Trichloro-1,2,2-trifluoroethane ND H 61.5 6.15 ug/Sample 11/29/19 10:48 12/07/19 01:24 11,1,2-trichloro-1-fluoroethane ND H 30.7 3.20 ug/Sample 11/29/19 10:48 12/07/19 01:24 11,1,2-Trichloroethane ND H 61.5 30.7 ug/Sample 11/29/19 10:48 12/07/19 01:24 11,1-Dichloro-1-fluoroethane ND H 61.5 6.15 ug/Sample 11/29/19 10:48 12/07/19 01:24 11,1-dichloro-2,2-difluoroethane ND H 61.5 6.15 ug/Sample 11/29/19 10:48 12/07/19 01:24 11,1-dichloro-2,2-difluoroethene ND H 30.7 3.69 ug/Sample 11/29/19 10:48 12/07/19 01:24 11,1-Dichloroethane ND H Eurofins TestAmerica, Knoxville 12/23/2019Page 40 of 89491 Client Sample Results Job ID: 140-17461-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Lab Sample ID: 140-17461-12Client Sample ID: Y-2975 R2 VEN DIV STACK MM18 IMPINGER #6 Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) RL MDL 1,1-Dichloroethene ND H 30.7 4.55 ug/Sample 11/29/19 10:48 12/07/19 01:24 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 30.7 3.32 ug/Sample 11/29/19 10:48 12/07/19 01:24 11,1-Dichloropropene ND H 615 615 ug/Sample 11/29/19 10:48 12/07/19 01:24 11,1-Difluoroethene ND H 61.5 6.15 ug/Sample 11/29/19 10:48 12/07/19 01:24 11,2,2-trichloro-1,1-difluoroethane ND H 30.7 9.83 ug/Sample 11/29/19 10:48 12/07/19 01:24 11,2,3-Trichlorobenzene ND H 30.7 7.62 ug/Sample 11/29/19 10:48 12/07/19 01:24 11,2,3-Trichloropropane ND H 30.7 10.3 ug/Sample 11/29/19 10:48 12/07/19 01:24 11,2,4-Trichlorobenzene ND H 30.7 6.39 ug/Sample 11/29/19 10:48 12/07/19 01:24 11,2,4-Trimethylbenzene ND H 61.5 10.8 ug/Sample 11/29/19 10:48 12/07/19 01:24 11,2-Dibromo-3-Chloropropane ND H 30.7 4.06 ug/Sample 11/29/19 10:48 12/07/19 01:24 11,2-Dibromoethane (EDB)ND H 61.5 6.15 ug/Sample 11/29/19 10:48 12/07/19 01:24 11,2-dichloro-1,1-difluoroethane ND H 30.7 5.41 ug/Sample 11/29/19 10:48 12/07/19 01:24 11,2-Dichlorobenzene ND H 30.7 5.16 ug/Sample 11/29/19 10:48 12/07/19 01:24 11,2-Dichloroethane ND H 30.7 3.07 ug/Sample 11/29/19 10:48 12/07/19 01:24 11,2-Dichloropropane ND H 30.7 6.39 ug/Sample 11/29/19 10:48 12/07/19 01:24 11,3,5-Trimethylbenzene ND H 30.7 5.29 ug/Sample 11/29/19 10:48 12/07/19 01:24 11,3-Dichlorobenzene ND H 30.7 3.44 ug/Sample 11/29/19 10:48 12/07/19 01:24 11,3-Dichloropropane ND H 30.7 6.15 ug/Sample 11/29/19 10:48 12/07/19 01:24 11,4-Dichlorobenzene ND H 61.5 6.27 ug/Sample 11/29/19 10:48 12/07/19 01:24 11-Chloro-1,1-difluoroethane ND H 61.5 6.15 ug/Sample 11/29/19 10:48 12/07/19 01:24 12,2-dichloro-1,1-difluoroethylmethyl ether ND H 30.7 8.97 ug/Sample 11/29/19 10:48 12/07/19 01:24 12,2-Dichloropropane ND H 123 19.7 ug/Sample 11/29/19 10:48 12/07/19 01:24 12-Butanone (MEK)ND H 61.5 9.10 ug/Sample 11/29/19 10:48 12/07/19 01:24 12-chloro-1,1,1,4,4,4-hexafluoro-2-but ene ND H 61.5 6.15 ug/Sample 11/29/19 10:48 12/07/19 01:24 12-Chloro-1,1,1-Trifluoroethane ND H 30.7 5.78 ug/Sample 11/29/19 10:48 12/07/19 01:24 12-Chlorotoluene ND H 123 28.3 ug/Sample 11/29/19 10:48 12/07/19 01:24 12-Hexanone ND H 26.8 26.8 ug/Sample 11/29/19 10:48 12/07/19 01:24 12-MTP as HFPO 583 H 30.7 6.39 ug/Sample 11/29/19 10:48 12/07/19 01:24 14-Chlorotoluene ND H 30.7 8.24 ug/Sample 11/29/19 10:48 12/07/19 01:24 14-Isopropyltoluene ND H 123 19.7 ug/Sample 11/29/19 10:48 12/07/19 01:24 14-Methyl-2-pentanone (MIBK)ND H 123 72.5 ug/Sample 11/29/19 10:48 12/07/19 01:24 1AcetoneND H 30.7 5.90 ug/Sample 11/29/19 10:48 12/07/19 01:24 1BenzeneND H 30.7 4.30 ug/Sample 11/29/19 10:48 12/07/19 01:24 1BromobenzeneND H 30.7 6.88 ug/Sample 11/29/19 10:48 12/07/19 01:24 1BromochloromethaneND H 30.7 5.29 ug/Sample 11/29/19 10:48 12/07/19 01:24 1BromodichloromethaneND H 30.7 9.34 ug/Sample 11/29/19 10:48 12/07/19 01:24 1BromoformND H 61.5 35.6 ug/Sample 11/29/19 10:48 12/07/19 01:24 1BromomethaneND H 30.7 7.62 ug/Sample 11/29/19 10:48 12/07/19 01:24 1Carbon disulfide ND H 30.7 4.06 ug/Sample 11/29/19 10:48 12/07/19 01:24 1Carbon tetrachloride ND H 90.1 90.1 ug/Sample 11/29/19 10:48 12/07/19 01:24 1Carbonyl Difluoride ND H 30.7 4.43 ug/Sample 11/29/19 10:48 12/07/19 01:24 1ChlorobenzeneND H 30.7 6.64 ug/Sample 11/29/19 10:48 12/07/19 01:24 1ChlorodibromomethaneND H 61.5 13.5 ug/Sample 11/29/19 10:48 12/07/19 01:24 1ChloroethaneND H 30.7 3.56 ug/Sample 11/29/19 10:48 12/07/19 01:24 1ChloroformND H 61.5 25.6 ug/Sample 11/29/19 10:48 12/07/19 01:24 1ChloromethaneND H 30.7 2.46 ug/Sample 11/29/19 10:48 12/07/19 01:24 1cis-1,2-Dichloroethene ND H Eurofins TestAmerica, Knoxville 12/23/2019Page 41 of 89492 Client Sample Results Job ID: 140-17461-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Lab Sample ID: 140-17461-12Client Sample ID: Y-2975 R2 VEN DIV STACK MM18 IMPINGER #6 Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) RL MDL cis-1,3-Dichloropropene ND H 30.7 5.29 ug/Sample 11/29/19 10:48 12/07/19 01:24 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 30.7 2.95 ug/Sample 11/29/19 10:48 12/07/19 01:24 1DibromomethaneND H 61.5 10.8 ug/Sample 11/29/19 10:48 12/07/19 01:24 1DichlorodifluoromethaneND H 30.7 5.04 ug/Sample 11/29/19 10:48 12/07/19 01:24 1EthylbenzeneND H 30.7 30.7 ug/Sample 11/29/19 10:48 12/07/19 01:24 1Heptafluoropropyl 1,2,2,2-tetrafluoroethyl ether ND H 30.7 8.11 ug/Sample 11/29/19 10:48 12/07/19 01:24 1HexachlorobutadieneND H 29.4 29.4 ug/Sample 11/29/19 10:48 12/07/19 01:24 1HFPO dimer, methyl ester as HFPO-DA ND H 30.7 4.30 ug/Sample 11/29/19 10:48 12/07/19 01:24 1IsopropylbenzeneND H 61.5 5.04 ug/Sample 11/29/19 10:48 12/07/19 01:24 1m,p-Xylene ND H 30.7 19.7 ug/Sample 11/29/19 10:48 12/07/19 01:24 1Methylene Chloride ND H 30.7 14.8 ug/Sample 11/29/19 10:48 12/07/19 01:24 1NaphthaleneND H 30.7 7.87 ug/Sample 11/29/19 10:48 12/07/19 01:24 1n-Butylbenzene ND H 30.7 6.64 ug/Sample 11/29/19 10:48 12/07/19 01:24 1n-Propylbenzene ND H 30.7 3.20 ug/Sample 11/29/19 10:48 12/07/19 01:24 1o-Xylene ND H 30.7 6.02 ug/Sample 11/29/19 10:48 12/07/19 01:24 1sec-Butylbenzene ND H 30.7 6.64 ug/Sample 11/29/19 10:48 12/07/19 01:24 1StyreneND H 30.7 5.41 ug/Sample 11/29/19 10:48 12/07/19 01:24 1tert-Butylbenzene ND H 30.7 4.06 ug/Sample 11/29/19 10:48 12/07/19 01:24 1TetrachloroetheneND H 30.7 5.65 ug/Sample 11/29/19 10:48 12/07/19 01:24 1TolueneND H 30.7 3.20 ug/Sample 11/29/19 10:48 12/07/19 01:24 1trans-1,2-Dichloroethene ND H 30.7 10.8 ug/Sample 11/29/19 10:48 12/07/19 01:24 1trans-1,3-Dichloropropene ND H 30.7 2.21 ug/Sample 11/29/19 10:48 12/07/19 01:24 1TrichloroetheneND H 61.5 5.90 ug/Sample 11/29/19 10:48 12/07/19 01:24 1TrichlorofluoromethaneND H * 61.5 14.8 ug/Sample 11/29/19 10:48 12/07/19 01:24 1Vinyl chloride ND H Propene, hexafluoro-333 T H J N ug/Sample 1.13 116-15-4 11/29/19 10:48 12/07/19 01:24 1 Tentatively Identified Compound Dil FacAnalyzedPreparedUnit DQualifierEst. Result CAS No.RT 112/07/19 01:2411/29/19 10:48T H JUnknown498 ug/Sample 1.18 1,2-Dichloroethane-d4 (Surr)117 70 -160 11/29/19 10:48 12/07/19 01:24 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery 4-Bromofluorobenzene (Surr)111 11/29/19 10:48 12/07/19 01:24 157-152 Dibromofluoromethane (Surr)104 11/29/19 10:48 12/07/19 01:24 162-134 Toluene-d8 (Surr)96 11/29/19 10:48 12/07/19 01:24 171-139 Method: 9056 - Anions, Ion Chromatography RL MDL Total Fluorine 28100 6560 3280 ug/Sample 11/29/19 10:48 12/13/19 20:47 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 2700 1230 ug/Sample 11/29/19 10:48 12/18/19 12:59 20Hydrogen Fluoride ND General Chemistry RL MDL pH 4.00 HF SU 12/13/19 15:01 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Eurofins TestAmerica, Knoxville 12/23/2019Page 42 of 89493 Default Detection Limits Client: Chemours Company FC, LLC The Job ID: 140-17461-1 Project/Site: VEN Stack - MM-18 Method: 8260B - Volatile Organic Compounds (GC/MS) Prep: MeOH Prep 2.501,1,1,2-Tetrachloroethane ug/Sample Analyte UnitsMDLRL 0.330 5.001,1,1,3,3-Pentafluorobutane ug/Sample0.500 2.501,1,1-Trichloroethane ug/Sample0.360 5.001,1,1-Trifluoro-2,2-dichloroethane ug/Sample0.990 5.001,1,1-Trifluoroethane ug/Sample0.500 2.501,1,2,2-Tetrachloroethane ug/Sample0.480 5.001,1,2-Trichloro-1,2,2-trifluoroethane ug/Sample0.280 5.001,1,2-trichloro-1-fluoroethane ug/Sample0.500 2.501,1,2-Trichloroethane ug/Sample0.260 5.001,1-Dichloro-1-fluoroethane ug/Sample2.50 5.001,1-dichloro-2,2-difluoroethane ug/Sample0.500 5.001,1-dichloro-2,2-difluoroethene ug/Sample0.500 2.501,1-Dichloroethane ug/Sample0.300 2.501,1-Dichloroethene ug/Sample0.370 2.501,1-Dichloropropene ug/Sample0.270 50.01,1-Difluoroethene ug/Sample50.0 5.001,2,2-trichloro-1,1-difluoroethane ug/Sample0.500 2.501,2,3-Trichlorobenzene ug/Sample0.800 2.501,2,3-Trichloropropane ug/Sample0.620 2.501,2,4-Trichlorobenzene ug/Sample0.840 2.501,2,4-Trimethylbenzene ug/Sample0.520 5.001,2-Dibromo-3-Chloropropane ug/Sample0.880 2.501,2-Dibromoethane (EDB)ug/Sample0.330 5.001,2-dichloro-1,1-difluoroethane ug/Sample0.500 2.501,2-Dichlorobenzene ug/Sample0.440 2.501,2-Dichloroethane ug/Sample0.420 2.501,2-Dichloropropane ug/Sample0.250 2.501,3,5-Trimethylbenzene ug/Sample0.520 2.501,3-Dichlorobenzene ug/Sample0.430 2.501,3-Dichloropropane ug/Sample0.280 2.501,4-Dichlorobenzene ug/Sample0.500 5.001-Chloro-1,1-difluoroethane ug/Sample0.510 5.002,2-dichloro-1,1-difluoroethylmethyl ether ug/Sample0.500 2.502,2-Dichloropropane ug/Sample0.730 10.02-Butanone (MEK)ug/Sample1.60 5.002-chloro-1,1,1,4,4,4-hexafluoro-2-butene ug/Sample0.740 5.002-Chloro-1,1,1-Trifluoroethane ug/Sample0.500 2.502-Chlorotoluene ug/Sample0.470 10.02-Hexanone ug/Sample2.30 2.502-MTP as HFPO ug/Sample2.50 2.504-Chlorotoluene ug/Sample0.520 2.504-Isopropyltoluene ug/Sample0.670 10.04-Methyl-2-pentanone (MIBK)ug/Sample1.60 10.0Acetone ug/Sample5.90 2.50Benzene ug/Sample0.480 2.50Bromobenzene ug/Sample0.350 2.50Bromochloromethane ug/Sample0.560 2.50Bromodichloromethane ug/Sample0.430 2.50Bromoform ug/Sample0.760 5.00Bromomethane ug/Sample2.90 2.50Carbon disulfide ug/Sample0.620 2.50Carbon tetrachloride ug/Sample0.330 Eurofins TestAmerica, Knoxville 12/23/2019Page 43 of 89494 Default Detection Limits Client: Chemours Company FC, LLC The Job ID: 140-17461-1 Project/Site: VEN Stack - MM-18 Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Prep: MeOH Prep 10.0Carbonyl Difluoride ug/Sample Analyte UnitsMDLRL 10.0 2.50Chlorobenzene ug/Sample0.360 2.50Chlorodibromomethane ug/Sample0.540 5.00Chloroethane ug/Sample1.10 2.50Chloroform ug/Sample0.290 5.00Chloromethane ug/Sample2.08 2.50cis-1,2-Dichloroethene ug/Sample0.200 2.50cis-1,3-Dichloropropene ug/Sample0.430 2.50Dibromomethane ug/Sample0.240 5.00Dichlorodifluoromethane ug/Sample0.880 2.50Ethylbenzene ug/Sample0.410 2.50Heptafluoropropyl 1,2,2,2-tetrafluoroethyl ether ug/Sample2.50 2.50Hexachlorobutadiene ug/Sample0.660 2.50HFPO dimer, methyl ester as HFPO-DA ug/Sample2.50 2.50Isopropylbenzene ug/Sample0.350 5.00m,p-Xylene ug/Sample0.410 2.50Methylene Chloride ug/Sample1.60 2.50Naphthalene ug/Sample1.20 2.50n-Butylbenzene ug/Sample0.640 2.50n-Propylbenzene ug/Sample0.540 2.50o-Xylene ug/Sample0.260 2.50sec-Butylbenzene ug/Sample0.490 2.50Styrene ug/Sample0.540 2.50tert-Butylbenzene ug/Sample0.440 2.50Tetrachloroethene ug/Sample0.330 2.50Toluene ug/Sample0.460 2.50trans-1,2-Dichloroethene ug/Sample0.260 2.50trans-1,3-Dichloropropene ug/Sample0.880 2.50Trichloroethene ug/Sample0.180 5.00Trichlorofluoromethane ug/Sample0.480 5.00Vinyl chloride ug/Sample1.20 Method: 9056 - Anions, Ion Chromatography Prep: MeOH Prep 11.0Hydrogen Fluoride ug/Sample Analyte UnitsMDLRL 5.00 1000Total Fluorine ug/Sample500 Eurofins TestAmerica, Knoxville 12/23/2019Page 44 of 89495 ANALYTICAL REPORT Job Number: 140-17557-1 Job Description: VEN Stack - MM-18 Contract Number: LBIO-67048 For: Chemours Company FC, LLC The c/o AECOM Sabre Building, Suite 300 4051 Ogletown Road Newark, DE 19713 Attention: Michael Aucoin _____________________________________________ Approved for release. Courtney M Adkins Project Manager II 12/30/2019 6:39 AM Courtney M Adkins, Project Manager II 5815 Middlebrook Pike, Knoxville, TN, 37921 (865)291-3000 courtney.adkins@testamericainc.com 12/30/2019 This report may not be reproduced except in full, and with written approval from the laboratory. For questions please contact the Project Manager at the e-mail address or telephone number listed on this page. The test results in this report relate only to the samples as received by the laboratory and will meet all requirements of the methodology, with any exceptions noted. This report shall not be reproduced except in full, without the express written approval of the laboratory. All questions should be directed to the Eurofins TestAmerica Project Manager. This report has been electronically signed and authorized by the signatory. Electronic signature is intended to be the legally binding equivalent of a traditionally handwritten signature. Eurofins TestAmerica, Knoxville 5815 Middlebrook Pike, Knoxville, TN 37921 Tel (865) 291-3000 Fax (865) 584-4315 www.testamericainc.com 12/30/2019Page 1 of 70696 Table of Contents Cover Title Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Data Summaries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Method Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Sample Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Case Narrative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 QC Association . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 Client Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 Default Detection Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28 Surrogate Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30 QC Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31 Chronicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38 Certification Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44 Manual Integration Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45 Organic Sample Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 GC/MS VOA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55 Method 8260B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55 Method 8260B QC Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56 Method 8260B Sample Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71 Standards Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .188 Method 8260B ICAL Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .188 Method 8260B CCAL Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .290 Raw QC Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .362 Method 8260B Tune Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .362 Method 8260B Blank Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .382 Method 8260B LCS/LCSD Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .391 12/30/2019Page 2 of 70697 Table of Contents Method 8260B MS/MSD Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .403 Method 8260B Run Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .411 Method 8260B Prep Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .428 HPLC/IC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .431 Method 9056 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .431 Method 9056 QC Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .432 Method 9056 Sample Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .437 Standards Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .455 Method 9056 ICAL Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .455 Method 9056 CCAL Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .482 Raw QC Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .511 Method 9056 Blank Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .511 Method 9056 LCS/LCSD Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .532 Method 9056 MS/MSD Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .538 Method 9056 Run Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .544 Method 9056 Prep Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .549 Method 9056A Total Halogens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .552 Method 9056A Total Halogens QC Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .553 Method 9056A Total Halogens Sample Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .558 Standards Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .576 Method 9056A Total Halogens ICAL Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .576 Method 9056A Total Halogens CCAL Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .601 Raw QC Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .629 Method 9056A Total Halogens Blank Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .629 Method 9056A Total Halogens LCS/LCSD Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .654 Method 9056A Total Halogens MS/MSD Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .660 12/30/2019Page 3 of 70698 Table of Contents Method 9056A Total Halogens Run Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .666 Method 9056A Total Halogens Prep Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .680 Inorganic Sample Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 685 General Chemistry Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .685 Gen Chem Cover Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .686 Gen Chem Sample Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .687 Gen Chem QC Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .693 Gen Chem ICV/CCV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .693 Gen Chem Duplicates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .694 Gen Chem MDL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .695 Gen Chem Analysis Run Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .696 Gen Chem Prep Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .697 Gen Chem Raw Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .698 Shipping and Receiving Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . 699 Client Chain of Custody . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .700 12/30/2019Page 4 of 70699 Definitions/Glossary Job ID: 140-17557-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Qualifiers GC/MS VOA Qualifier Description *LCS or LCSD is outside acceptance limits. Qualifier 4 MS, MSD: The analyte present in the original sample is greater than 4 times the matrix spike concentration; therefore, control limits are not applicable. E Result exceeded calibration range. J Result is less than the RL but greater than or equal to the MDL and the concentration is an approximate value. GC/MS VOA TICs Qualifier Description J Indicates an Estimated Value for TICs Qualifier N Presumptive evidence of material. T Result is a tentatively identified compound (TIC) and an estimated value. HPLC/IC Qualifier Description J Result is less than the RL but greater than or equal to the MDL and the concentration is an approximate value. Qualifier General Chemistry Qualifier Description HF Field parameter with a holding time of 15 minutes. Test performed by laboratory at client's request. Qualifier Glossary These commonly used abbreviations may or may not be present in this report. ¤Listed under the "D" column to designate that the result is reported on a dry weight basis Abbreviation %R Percent Recovery CFL Contains Free Liquid CNF Contains No Free Liquid DER Duplicate Error Ratio (normalized absolute difference) Dil Fac Dilution Factor DL Detection Limit (DoD/DOE) DL, RA, RE, IN Indicates a Dilution, Re-analysis, Re-extraction, or additional Initial metals/anion analysis of the sample DLC Decision Level Concentration (Radiochemistry) EDL Estimated Detection Limit (Dioxin) LOD Limit of Detection (DoD/DOE) LOQ Limit of Quantitation (DoD/DOE) MDA Minimum Detectable Activity (Radiochemistry) MDC Minimum Detectable Concentration (Radiochemistry) MDL Method Detection Limit ML Minimum Level (Dioxin) NC Not Calculated ND Not Detected at the reporting limit (or MDL or EDL if shown) PQL Practical Quantitation Limit QC Quality Control RER Relative Error Ratio (Radiochemistry) RL Reporting Limit or Requested Limit (Radiochemistry) RPD Relative Percent Difference, a measure of the relative difference between two points TEF Toxicity Equivalent Factor (Dioxin) TEQ Toxicity Equivalent Quotient (Dioxin) Eurofins TestAmerica, Knoxville 12/30/2019Page 5 of 706100 Method Summary Job ID: 140-17557-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Method Method Description LaboratoryProtocol SW8468260BVolatile Organic Compounds (GC/MS)TAL KNX SW8469056Anions, Ion Chromatography TAL KNX SW8469041ApH TAL KNX SW8465050Bomb Preparation Method for Solid Waste TAL KNX NoneMeOH Prep Methanol Impinger Preparation TAL KNX Protocol References: None = None SW846 = "Test Methods For Evaluating Solid Waste, Physical/Chemical Methods", Third Edition, November 1986 And Its Updates. Laboratory References: TAL KNX = Eurofins TestAmerica, Knoxville, 5815 Middlebrook Pike, Knoxville, TN 37921, TEL (865)291-3000 Eurofins TestAmerica, Knoxville 12/30/2019Page 6 of 706101 Sample Summary Job ID: 140-17557-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Lab Sample ID Client Sample ID ReceivedCollectedMatrix Asset ID 140-17557-1 Y-2976 R3 VEN DIV STACK MM18 IMPINGER #1 Air 12/04/19 00:00 12/07/19 08:00 140-17557-2 Y-2977 R3 VEN DIV STACK MM18 IMPINGER #2 Air 12/04/19 00:00 12/07/19 08:00 140-17557-3 Y-2978 R3 VEN DIV STACK MM18 IMPINGER #3 Air 12/04/19 00:00 12/07/19 08:00 140-17557-4 Y-2979 R3 VEN DIV STACK MM18 IMPINGER #4 Air 12/04/19 00:00 12/07/19 08:00 140-17557-5 Y-2980 R3 VEN DIV STACK MM18 IMPINGER #5 Air 12/04/19 00:00 12/07/19 08:00 140-17557-6 Y-2981 R3 VEN DIV STACK MM18 IMPINGER #6 Air 12/04/19 00:00 12/07/19 08:00 Eurofins TestAmerica, Knoxville 12/30/2019Page 7 of 706102 Job Narrative 140-17557-1 Receipt The samples were received on December 7, 2019 at 8:00 AM; the samples arrived in good condition, properly preserved and, where required, on ice. The temperatures of the 2 coolers at receipt time were 0.9º C and 1.4º C. GC/MS VOA Impinger Sample Preparation and Analysis: Impinger samples were analyzed for the volatile organic target analytes by purge and trap GCMS using Eurofins TestAmerica Knoxville standard operating procedure KNOX-MS-0015, based on the following method: · SW-846 8260B, “Volatile Organic Compounds by Gas Chromatography/ Mass Spectrometry (GC/MS)” Each sample is prepared by adding a known amount of sample to the purge water in a purge and trap vessel and spiking with internal standards, surrogates, and matrix spike analytes (as needed). Volatile compounds are introduced into the gas chromatograph by the purge and trap method. The components are separated using the chromatograph and detected using a mass spectrometer, which provides both qualitative and quantitative information. Impinger sample results were calculated using the following equation: Concentration, μg/sample = (C × DF × W × Vt) / (Va) Where: C = On-column concentration, μg/L DF = Dilution factor W = Volume of water purged, L Vt = Methanol extract final volume, μL Va = Volume of extract analyzed, µL Method 8260B: (LCS 140-35956/1-A) for analytical batch 140-35964 recovered below marginal exceedance limits for Trichlorofluoromethane. This is an ongoing instrument issue with LCS recoveries for this analyte. The project manager approved moving forward with analysis for the current job. Method 8260B: The following samples were diluted to bring the concentration of target analytes within the calibration range: Y-2976 R3 VEN DIV STACK MM18 IMPINGER #1 (140-17557-1), Y-2977 R3 VEN DIV STACK MM18 IMPINGER #2 (140-17557-2), Y-2978 R3 VEN DIV STACK MM18 IMPINGER #3 (140-17557-3), Y-2979 R3 VEN DIV STACK MM18 IMPINGER #4 (140-17557-4), Y-2980 R3 VEN DIV STACK MM18 IMPINGER #5 (140-17557-5) and Y-2981 R3 VEN DIV STACK MM18 IMPINGER #6 (140-17557-6). Elevated reporting limits (RLs) are provided. Method 8260B: The continuing calibration verification (CCV) associated with batch 140-35990 recovered above the upper control limit for Chloroethane. The samples associated with this CCV were non-detects for the affected analytes; therefore, the data have been reported. No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page. General Chemistry Total Halogens: The samples were prepared for total fluorine, chlorine, bromine and/or iodine using SOP number KNOX-WC-0016 (based on ASTM Method E442 and SW-846 Method 5050). The sample is oxidized by combustion in an oxygen flask at atmospheric pressure or a bomb containing oxygen under pressure. The liberated halogen compounds are absorbed primarily as halides in a sodium carbonate/sodium bicarbonate buffer solution. The combustion products are collected by repeated rinsing of the combustion apparatus, and analyzed by ion chromatography in accordance with SOP KNOX-WC-0005 (based on SW-846 Method 9056). The results are calculated using the following equation: C = [(Ccom × Vcom) / W] × 1000 g/Kg Where: C = Concentration of analyte in the sample, mg/Kg Ccom = Concentration of analyte in the combustate, mg/L Vcom = Total volume of combustate, L W = Weight of sample combusted, g Anions in Impinger Solutions: Anions are is determined in accordance to SOP KNOX-WC-0005 (based on methods 300.0A and 9056). The samples were diluted a minimum of 1/20 in ion chromatography solvent buffer solution to reduce the methanol concentration before injection. Buffer concentrate was added until the pH was 10. Samples are diluted with ion chromatography eluate solution to bring the 12/30/2019Page 8 of 706103 concentrations within the calibration range when necessary. Higher dilutions are applied as necessary. An aliquot of prepared sample is introduced into the ion chromatograph. Anions are identified based on their retention times as compared to those of known standards. Quantification is accomplished by measuring the peak response and comparing it to a calibration curve generated from known standards. The pH of all samples were tested with pH paper. QC consisted of initial CCV and LCS which also serve as initial calibration, duplicate analysis for every 10 samples, and closing CCV. A certified thermometer was used to check the ambient temperature. No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page. 12/30/2019Page 9 of 706104 QC Association Summary Job ID: 140-17557-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 GC/MS VOA Prep Batch: 35956 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air MeOH Prep140-17557-1 Y-2976 R3 VEN DIV STACK MM18 IMPINGER #1 Total/NA Air MeOH Prep140-17557-2 Y-2977 R3 VEN DIV STACK MM18 IMPINGER #2 Total/NA Air MeOH Prep140-17557-2 - DL Y-2977 R3 VEN DIV STACK MM18 IMPINGER #2 Total/NA Air MeOH Prep140-17557-3 Y-2978 R3 VEN DIV STACK MM18 IMPINGER #3 Total/NA Air MeOH Prep140-17557-3 - DL Y-2978 R3 VEN DIV STACK MM18 IMPINGER #3 Total/NA Air MeOH Prep140-17557-4 Y-2979 R3 VEN DIV STACK MM18 IMPINGER #4 Total/NA Air MeOH Prep140-17557-4 - DL Y-2979 R3 VEN DIV STACK MM18 IMPINGER #4 Total/NA Air MeOH Prep140-17557-5 Y-2980 R3 VEN DIV STACK MM18 IMPINGER #5 Total/NA Air MeOH Prep140-17557-6 - DL Y-2981 R3 VEN DIV STACK MM18 IMPINGER #6 Total/NA Air MeOH Prep140-17557-6 Y-2981 R3 VEN DIV STACK MM18 IMPINGER #6 Total/NA Air MeOH PrepMB 140-35956/2-A Method Blank Total/NA Air MeOH PrepLCS 140-35956/1-A Lab Control Sample Total/NA Air MeOH Prep140-17557-2 MS Y-2977 R3 VEN DIV STACK MM18 IMPINGER #2 Total/NA Air MeOH Prep140-17557-2 MSD Y-2977 R3 VEN DIV STACK MM18 IMPINGER #2 Total/NA Analysis Batch: 35964 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air 8260B 35956140-17557-1 Y-2976 R3 VEN DIV STACK MM18 IMPINGER #1 Total/NA Air 8260B 35956140-17557-2 Y-2977 R3 VEN DIV STACK MM18 IMPINGER #2 Total/NA Air 8260B 35956140-17557-3 Y-2978 R3 VEN DIV STACK MM18 IMPINGER #3 Total/NA Air 8260B 35956140-17557-4 Y-2979 R3 VEN DIV STACK MM18 IMPINGER #4 Total/NA Air 8260B 35956140-17557-5 Y-2980 R3 VEN DIV STACK MM18 IMPINGER #5 Total/NA Air 8260B 35956140-17557-6 Y-2981 R3 VEN DIV STACK MM18 IMPINGER #6 Total/NA Air 8260B 35956MB 140-35956/2-A Method Blank Total/NA Air 8260B 35956LCS 140-35956/1-A Lab Control Sample Total/NA Air 8260B 35956LCS 140-35956/1-A Lab Control Sample Total/NA Analysis Batch: 35990 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air 8260B 35956140-17557-2 - DL Y-2977 R3 VEN DIV STACK MM18 IMPINGER #2 Total/NA Air 8260B 35956140-17557-3 - DL Y-2978 R3 VEN DIV STACK MM18 IMPINGER #3 Total/NA Air 8260B 35956140-17557-4 - DL Y-2979 R3 VEN DIV STACK MM18 IMPINGER #4 Total/NA Air 8260B 35956140-17557-6 - DL Y-2981 R3 VEN DIV STACK MM18 IMPINGER #6 Total/NA Air 8260B 35956140-17557-2 MS Y-2977 R3 VEN DIV STACK MM18 IMPINGER #2 Total/NA Air 8260B 35956140-17557-2 MSD Y-2977 R3 VEN DIV STACK MM18 IMPINGER #2 Total/NA HPLC/IC Prep Batch: 35956 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air MeOH Prep140-17557-1 Y-2976 R3 VEN DIV STACK MM18 IMPINGER #1 Total/NA Air MeOH Prep140-17557-2 Y-2977 R3 VEN DIV STACK MM18 IMPINGER #2 Total/NA Air MeOH Prep140-17557-3 Y-2978 R3 VEN DIV STACK MM18 IMPINGER #3 Total/NA Air MeOH Prep140-17557-4 Y-2979 R3 VEN DIV STACK MM18 IMPINGER #4 Total/NA Air MeOH Prep140-17557-5 Y-2980 R3 VEN DIV STACK MM18 IMPINGER #5 Total/NA Air MeOH Prep140-17557-6 Y-2981 R3 VEN DIV STACK MM18 IMPINGER #6 Total/NA Air MeOH PrepMB 140-35956/19-A Method Blank Total/NA Air MeOH PrepMB 140-35956/19-B Method Blank Total/NA Air MeOH PrepLCS 140-35956/20-A Lab Control Sample Total/NA Air MeOH PrepLCS 140-35956/20-B Lab Control Sample Total/NA Air MeOH PrepLCSD 140-35956/21-A Lab Control Sample Dup Total/NA Eurofins TestAmerica, Knoxville 12/30/2019Page 10 of 706105 QC Association Summary Job ID: 140-17557-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 HPLC/IC (Continued) Prep Batch: 35956 (Continued) Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air MeOH PrepLCSD 140-35956/21-B Lab Control Sample Dup Total/NA Air MeOH Prep140-17557-2 MS Y-2977 R3 VEN DIV STACK MM18 IMPINGER #2 Total/NA Air MeOH Prep140-17557-2 MSD Y-2977 R3 VEN DIV STACK MM18 IMPINGER #2 Total/NA Prep Batch: 35976 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air 5050 35956140-17557-1 Y-2976 R3 VEN DIV STACK MM18 IMPINGER #1 Total/NA Air 5050 35956140-17557-2 Y-2977 R3 VEN DIV STACK MM18 IMPINGER #2 Total/NA Air 5050 35956140-17557-3 Y-2978 R3 VEN DIV STACK MM18 IMPINGER #3 Total/NA Air 5050 35956140-17557-4 Y-2979 R3 VEN DIV STACK MM18 IMPINGER #4 Total/NA Air 5050 35956140-17557-5 Y-2980 R3 VEN DIV STACK MM18 IMPINGER #5 Total/NA Air 5050 35956140-17557-6 Y-2981 R3 VEN DIV STACK MM18 IMPINGER #6 Total/NA Air 5050 35956MB 140-35956/19-B Method Blank Total/NA Air 5050 35956LCS 140-35956/20-B Lab Control Sample Total/NA Air 5050 35956LCSD 140-35956/21-B Lab Control Sample Dup Total/NA Air 5050 35956140-17557-2 MS Y-2977 R3 VEN DIV STACK MM18 IMPINGER #2 Total/NA Air 5050 35956140-17557-2 MSD Y-2977 R3 VEN DIV STACK MM18 IMPINGER #2 Total/NA Analysis Batch: 36294 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air 9056 35976140-17557-1 Y-2976 R3 VEN DIV STACK MM18 IMPINGER #1 Total/NA Air 9056 35976140-17557-2 Y-2977 R3 VEN DIV STACK MM18 IMPINGER #2 Total/NA Air 9056 35976140-17557-3 Y-2978 R3 VEN DIV STACK MM18 IMPINGER #3 Total/NA Air 9056 35976140-17557-4 Y-2979 R3 VEN DIV STACK MM18 IMPINGER #4 Total/NA Air 9056 35976140-17557-5 Y-2980 R3 VEN DIV STACK MM18 IMPINGER #5 Total/NA Air 9056 35976140-17557-6 Y-2981 R3 VEN DIV STACK MM18 IMPINGER #6 Total/NA Air 9056 35976MB 140-35956/19-B Method Blank Total/NA Air 9056 35976LCS 140-35956/20-B Lab Control Sample Total/NA Air 9056 35976LCSD 140-35956/21-B Lab Control Sample Dup Total/NA Air 9056 35976140-17557-2 MS Y-2977 R3 VEN DIV STACK MM18 IMPINGER #2 Total/NA Air 9056 35976140-17557-2 MSD Y-2977 R3 VEN DIV STACK MM18 IMPINGER #2 Total/NA Analysis Batch: 36325 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air 9056 35956140-17557-1 Y-2976 R3 VEN DIV STACK MM18 IMPINGER #1 Total/NA Air 9056 35956140-17557-2 Y-2977 R3 VEN DIV STACK MM18 IMPINGER #2 Total/NA Air 9056 35956140-17557-3 Y-2978 R3 VEN DIV STACK MM18 IMPINGER #3 Total/NA Air 9056 35956140-17557-4 Y-2979 R3 VEN DIV STACK MM18 IMPINGER #4 Total/NA Air 9056 35956140-17557-5 Y-2980 R3 VEN DIV STACK MM18 IMPINGER #5 Total/NA Air 9056 35956140-17557-6 Y-2981 R3 VEN DIV STACK MM18 IMPINGER #6 Total/NA Air 9056 35956MB 140-35956/19-A Method Blank Total/NA Air 9056 35956LCS 140-35956/20-A Lab Control Sample Total/NA Air 9056 35956LCSD 140-35956/21-A Lab Control Sample Dup Total/NA Air 9056 35956140-17557-2 MS Y-2977 R3 VEN DIV STACK MM18 IMPINGER #2 Total/NA Air 9056 35956140-17557-2 MSD Y-2977 R3 VEN DIV STACK MM18 IMPINGER #2 Total/NA General Chemistry Analysis Batch: 36156 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air 9041A140-17557-1 Y-2976 R3 VEN DIV STACK MM18 IMPINGER #1 Total/NA Eurofins TestAmerica, Knoxville 12/30/2019Page 11 of 706106 QC Association Summary Job ID: 140-17557-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 General Chemistry (Continued) Analysis Batch: 36156 (Continued) Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air 9041A140-17557-2 Y-2977 R3 VEN DIV STACK MM18 IMPINGER #2 Total/NA Air 9041A140-17557-3 Y-2978 R3 VEN DIV STACK MM18 IMPINGER #3 Total/NA Air 9041A140-17557-4 Y-2979 R3 VEN DIV STACK MM18 IMPINGER #4 Total/NA Air 9041A140-17557-5 Y-2980 R3 VEN DIV STACK MM18 IMPINGER #5 Total/NA Air 9041A140-17557-6 Y-2981 R3 VEN DIV STACK MM18 IMPINGER #6 Total/NA Air 9041ALCS 140-36156/2 Lab Control Sample Total/NA Air 9041A140-17557-1 DU Y-2976 R3 VEN DIV STACK MM18 IMPINGER #1 Total/NA Eurofins TestAmerica, Knoxville 12/30/2019Page 12 of 706107 Client Sample Results Job ID: 140-17557-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Lab Sample ID: 140-17557-1Client Sample ID: Y-2976 R3 VEN DIV STACK MM18 IMPINGER #1 Matrix: AirDate Collected: 12/04/19 00:00 Date Received: 12/07/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) RL MDL 1,1,1,2-Tetrachloroethane ND 31.5 4.15 ug/Sample 12/10/19 09:47 12/10/19 22:58 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 62.9 6.29 ug/Sample 12/10/19 09:47 12/10/19 22:58 11,1,1,3,3-Pentafluorobutane ND 31.5 4.53 ug/Sample 12/10/19 09:47 12/10/19 22:58 11,1,1-Trichloroethane ND 62.9 12.5 ug/Sample 12/10/19 09:47 12/10/19 22:58 11,1,1-Trifluoro-2,2-dichloroethane ND 62.9 6.29 ug/Sample 12/10/19 09:47 12/10/19 22:58 11,1,1-Trifluoroethane ND 31.5 6.04 ug/Sample 12/10/19 09:47 12/10/19 22:58 11,1,2,2-Tetrachloroethane ND 62.9 3.52 ug/Sample 12/10/19 09:47 12/10/19 22:58 11,1,2-Trichloro-1,2,2-trifluoroethane ND 62.9 6.29 ug/Sample 12/10/19 09:47 12/10/19 22:58 11,1,2-trichloro-1-fluoroethane ND 31.5 3.27 ug/Sample 12/10/19 09:47 12/10/19 22:58 11,1,2-Trichloroethane ND 62.9 31.5 ug/Sample 12/10/19 09:47 12/10/19 22:58 11,1-Dichloro-1-fluoroethane ND 62.9 6.29 ug/Sample 12/10/19 09:47 12/10/19 22:58 11,1-dichloro-2,2-difluoroethane ND 62.9 6.29 ug/Sample 12/10/19 09:47 12/10/19 22:58 11,1-dichloro-2,2-difluoroethene ND 31.5 3.78 ug/Sample 12/10/19 09:47 12/10/19 22:58 11,1-Dichloroethane ND 31.5 4.66 ug/Sample 12/10/19 09:47 12/10/19 22:58 11,1-Dichloroethene ND 31.5 3.40 ug/Sample 12/10/19 09:47 12/10/19 22:58 11,1-Dichloropropene ND 629 629 ug/Sample 12/10/19 09:47 12/10/19 22:58 11,1-Difluoroethene ND 62.9 6.29 ug/Sample 12/10/19 09:47 12/10/19 22:58 11,2,2-trichloro-1,1-difluoroethane ND 31.5 10.1 ug/Sample 12/10/19 09:47 12/10/19 22:58 11,2,3-Trichlorobenzene ND 31.5 7.80 ug/Sample 12/10/19 09:47 12/10/19 22:58 11,2,3-Trichloropropane ND 31.5 10.6 ug/Sample 12/10/19 09:47 12/10/19 22:58 11,2,4-Trichlorobenzene ND 31.5 6.54 ug/Sample 12/10/19 09:47 12/10/19 22:58 11,2,4-Trimethylbenzene ND 62.9 11.1 ug/Sample 12/10/19 09:47 12/10/19 22:58 11,2-Dibromo-3-Chloropropane ND 31.5 4.15 ug/Sample 12/10/19 09:47 12/10/19 22:58 11,2-Dibromoethane (EDB)ND 62.9 6.29 ug/Sample 12/10/19 09:47 12/10/19 22:58 11,2-dichloro-1,1-difluoroethane ND 31.5 5.54 ug/Sample 12/10/19 09:47 12/10/19 22:58 11,2-Dichlorobenzene ND 31.5 5.29 ug/Sample 12/10/19 09:47 12/10/19 22:58 11,2-Dichloroethane ND 31.5 3.15 ug/Sample 12/10/19 09:47 12/10/19 22:58 11,2-Dichloropropane ND 31.5 6.54 ug/Sample 12/10/19 09:47 12/10/19 22:58 11,3,5-Trimethylbenzene ND 31.5 5.41 ug/Sample 12/10/19 09:47 12/10/19 22:58 11,3-Dichlorobenzene ND 31.5 3.52 ug/Sample 12/10/19 09:47 12/10/19 22:58 11,3-Dichloropropane ND 31.5 6.29 ug/Sample 12/10/19 09:47 12/10/19 22:58 11,4-Dichlorobenzene ND 62.9 6.42 ug/Sample 12/10/19 09:47 12/10/19 22:58 11-Chloro-1,1-difluoroethane ND 62.9 6.29 ug/Sample 12/10/19 09:47 12/10/19 22:58 12,2-dichloro-1,1-difluoroethylmethyl ether ND 31.5 9.19 ug/Sample 12/10/19 09:47 12/10/19 22:58 12,2-Dichloropropane ND 126 20.1 ug/Sample 12/10/19 09:47 12/10/19 22:58 12-Butanone (MEK)ND 62.9 9.31 ug/Sample 12/10/19 09:47 12/10/19 22:58 12-chloro-1,1,1,4,4,4-hexafluoro-2-but ene ND 62.9 6.29 ug/Sample 12/10/19 09:47 12/10/19 22:58 12-Chloro-1,1,1-Trifluoroethane ND 31.5 5.92 ug/Sample 12/10/19 09:47 12/10/19 22:58 12-Chlorotoluene ND 126 28.9 ug/Sample 12/10/19 09:47 12/10/19 22:58 12-Hexanone ND 27.5 27.5 ug/Sample 12/10/19 09:47 12/10/19 22:58 12-MTP as HFPO 1460 31.5 6.54 ug/Sample 12/10/19 09:47 12/10/19 22:58 14-Chlorotoluene ND 31.5 8.43 ug/Sample 12/10/19 09:47 12/10/19 22:58 14-Isopropyltoluene ND 126 20.1 ug/Sample 12/10/19 09:47 12/10/19 22:58 14-Methyl-2-pentanone (MIBK)ND 126 74.3 ug/Sample 12/10/19 09:47 12/10/19 22:58 1AcetoneND 31.5 6.04 ug/Sample 12/10/19 09:47 12/10/19 22:58 1BenzeneND 31.5 4.41 ug/Sample 12/10/19 09:47 12/10/19 22:58 1BromobenzeneND Eurofins TestAmerica, Knoxville 12/30/2019Page 13 of 706108 Client Sample Results Job ID: 140-17557-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Lab Sample ID: 140-17557-1Client Sample ID: Y-2976 R3 VEN DIV STACK MM18 IMPINGER #1 Matrix: AirDate Collected: 12/04/19 00:00 Date Received: 12/07/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) RL MDL Bromochloromethane ND 31.5 7.05 ug/Sample 12/10/19 09:47 12/10/19 22:58 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 31.5 5.41 ug/Sample 12/10/19 09:47 12/10/19 22:58 1BromodichloromethaneND 31.5 9.57 ug/Sample 12/10/19 09:47 12/10/19 22:58 1BromoformND 62.9 36.5 ug/Sample 12/10/19 09:47 12/10/19 22:58 1BromomethaneND 31.5 7.80 ug/Sample 12/10/19 09:47 12/10/19 22:58 1Carbon disulfide ND 31.5 4.15 ug/Sample 12/10/19 09:47 12/10/19 22:58 1Carbon tetrachloride ND 92.3 92.3 ug/Sample 12/10/19 09:47 12/10/19 22:58 1Carbonyl Difluoride ND 31.5 4.53 ug/Sample 12/10/19 09:47 12/10/19 22:58 1ChlorobenzeneND 31.5 6.80 ug/Sample 12/10/19 09:47 12/10/19 22:58 1ChlorodibromomethaneND 62.9 13.8 ug/Sample 12/10/19 09:47 12/10/19 22:58 1ChloroethaneND 31.5 3.65 ug/Sample 12/10/19 09:47 12/10/19 22:58 1ChloroformND 62.9 26.2 ug/Sample 12/10/19 09:47 12/10/19 22:58 1ChloromethaneND 31.5 2.52 ug/Sample 12/10/19 09:47 12/10/19 22:58 1cis-1,2-Dichloroethene ND 31.5 5.41 ug/Sample 12/10/19 09:47 12/10/19 22:58 1cis-1,3-Dichloropropene ND 31.5 3.02 ug/Sample 12/10/19 09:47 12/10/19 22:58 1DibromomethaneND 62.9 11.1 ug/Sample 12/10/19 09:47 12/10/19 22:58 1DichlorodifluoromethaneND 31.5 5.16 ug/Sample 12/10/19 09:47 12/10/19 22:58 1EthylbenzeneND 31.5 31.5 ug/Sample 12/10/19 09:47 12/10/19 22:58 1Heptafluoropropyl 1,2,2,2-tetrafluoroethyl ether 149 31.5 8.31 ug/Sample 12/10/19 09:47 12/10/19 22:58 1HexachlorobutadieneND 30.2 30.2 ug/Sample 12/10/19 09:47 12/10/19 22:58 1HFPO dimer, methyl ester as HFPO-DA ND 31.5 4.41 ug/Sample 12/10/19 09:47 12/10/19 22:58 1IsopropylbenzeneND 62.9 5.16 ug/Sample 12/10/19 09:47 12/10/19 22:58 1m,p-Xylene ND 31.5 20.1 ug/Sample 12/10/19 09:47 12/10/19 22:58 1Methylene Chloride 37.3 31.5 15.1 ug/Sample 12/10/19 09:47 12/10/19 22:58 1NaphthaleneND 31.5 8.06 ug/Sample 12/10/19 09:47 12/10/19 22:58 1n-Butylbenzene ND 31.5 6.80 ug/Sample 12/10/19 09:47 12/10/19 22:58 1n-Propylbenzene ND 31.5 3.27 ug/Sample 12/10/19 09:47 12/10/19 22:58 1o-Xylene ND 31.5 6.17 ug/Sample 12/10/19 09:47 12/10/19 22:58 1sec-Butylbenzene ND 31.5 6.80 ug/Sample 12/10/19 09:47 12/10/19 22:58 1StyreneND 31.5 5.54 ug/Sample 12/10/19 09:47 12/10/19 22:58 1tert-Butylbenzene ND 31.5 4.15 ug/Sample 12/10/19 09:47 12/10/19 22:58 1TetrachloroetheneND 31.5 5.79 ug/Sample 12/10/19 09:47 12/10/19 22:58 1TolueneND 31.5 3.27 ug/Sample 12/10/19 09:47 12/10/19 22:58 1trans-1,2-Dichloroethene ND 31.5 11.1 ug/Sample 12/10/19 09:47 12/10/19 22:58 1trans-1,3-Dichloropropene ND 31.5 2.27 ug/Sample 12/10/19 09:47 12/10/19 22:58 1TrichloroetheneND 62.9 6.04 ug/Sample 12/10/19 09:47 12/10/19 22:58 1TrichlorofluoromethaneND * 62.9 15.1 ug/Sample 12/10/19 09:47 12/10/19 22:58 1Vinyl chloride ND Unknown 318 T J ug/Sample 1.13 12/10/19 09:47 12/10/19 22:58 1 Tentatively Identified Compound Dil FacAnalyzedPreparedUnit DQualifierEst. Result CAS No.RT 112/10/19 22:5812/10/19 09:47T JUnknown626 ug/Sample 1.18 1,2-Dichloroethane-d4 (Surr)121 70 -160 12/10/19 09:47 12/10/19 22:58 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery 4-Bromofluorobenzene (Surr)106 12/10/19 09:47 12/10/19 22:58 157-152 Dibromofluoromethane (Surr)109 12/10/19 09:47 12/10/19 22:58 162-134 Eurofins TestAmerica, Knoxville 12/30/2019Page 14 of 706109 Client Sample Results Job ID: 140-17557-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Lab Sample ID: 140-17557-1Client Sample ID: Y-2976 R3 VEN DIV STACK MM18 IMPINGER #1 Matrix: AirDate Collected: 12/04/19 00:00 Date Received: 12/07/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Toluene-d8 (Surr)89 71 -139 12/10/19 09:47 12/10/19 22:58 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Method: 9056 - Anions, Ion Chromatography RL MDL Total Fluorine 98200 13400 6710 ug/Sample 12/10/19 09:47 12/23/19 12:01 2 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 2770 1260 ug/Sample 12/10/19 09:47 12/24/19 01:17 20Hydrogen Fluoride ND General Chemistry RL MDL pH 4.0 HF SU 12/17/19 13:37 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Lab Sample ID: 140-17557-2Client Sample ID: Y-2977 R3 VEN DIV STACK MM18 IMPINGER #2 Matrix: AirDate Collected: 12/04/19 00:00 Date Received: 12/07/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) RL MDL 1,1,1,2-Tetrachloroethane ND 30.5 4.02 ug/Sample 12/10/19 09:47 12/10/19 22:34 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 61.0 6.10 ug/Sample 12/10/19 09:47 12/10/19 22:34 11,1,1,3,3-Pentafluorobutane ND 30.5 4.39 ug/Sample 12/10/19 09:47 12/10/19 22:34 11,1,1-Trichloroethane ND 61.0 12.1 ug/Sample 12/10/19 09:47 12/10/19 22:34 11,1,1-Trifluoro-2,2-dichloroethane ND 61.0 6.10 ug/Sample 12/10/19 09:47 12/10/19 22:34 11,1,1-Trifluoroethane ND 30.5 5.85 ug/Sample 12/10/19 09:47 12/10/19 22:34 11,1,2,2-Tetrachloroethane ND 61.0 3.41 ug/Sample 12/10/19 09:47 12/10/19 22:34 11,1,2-Trichloro-1,2,2-trifluoroethane ND 61.0 6.10 ug/Sample 12/10/19 09:47 12/10/19 22:34 11,1,2-trichloro-1-fluoroethane ND 30.5 3.17 ug/Sample 12/10/19 09:47 12/10/19 22:34 11,1,2-Trichloroethane ND 61.0 30.5 ug/Sample 12/10/19 09:47 12/10/19 22:34 11,1-Dichloro-1-fluoroethane ND 61.0 6.10 ug/Sample 12/10/19 09:47 12/10/19 22:34 11,1-dichloro-2,2-difluoroethane ND 61.0 6.10 ug/Sample 12/10/19 09:47 12/10/19 22:34 11,1-dichloro-2,2-difluoroethene ND 30.5 3.66 ug/Sample 12/10/19 09:47 12/10/19 22:34 11,1-Dichloroethane ND 30.5 4.51 ug/Sample 12/10/19 09:47 12/10/19 22:34 11,1-Dichloroethene ND 30.5 3.29 ug/Sample 12/10/19 09:47 12/10/19 22:34 11,1-Dichloropropene ND 610 610 ug/Sample 12/10/19 09:47 12/10/19 22:34 11,1-Difluoroethene ND 61.0 6.10 ug/Sample 12/10/19 09:47 12/10/19 22:34 11,2,2-trichloro-1,1-difluoroethane ND 30.5 9.76 ug/Sample 12/10/19 09:47 12/10/19 22:34 11,2,3-Trichlorobenzene ND 30.5 7.56 ug/Sample 12/10/19 09:47 12/10/19 22:34 11,2,3-Trichloropropane ND 30.5 10.2 ug/Sample 12/10/19 09:47 12/10/19 22:34 11,2,4-Trichlorobenzene ND 30.5 6.34 ug/Sample 12/10/19 09:47 12/10/19 22:34 11,2,4-Trimethylbenzene ND 61.0 10.7 ug/Sample 12/10/19 09:47 12/10/19 22:34 11,2-Dibromo-3-Chloropropane ND 30.5 4.02 ug/Sample 12/10/19 09:47 12/10/19 22:34 11,2-Dibromoethane (EDB)ND 61.0 6.10 ug/Sample 12/10/19 09:47 12/10/19 22:34 11,2-dichloro-1,1-difluoroethane ND 30.5 5.37 ug/Sample 12/10/19 09:47 12/10/19 22:34 11,2-Dichlorobenzene ND 30.5 5.12 ug/Sample 12/10/19 09:47 12/10/19 22:34 11,2-Dichloroethane ND 30.5 3.05 ug/Sample 12/10/19 09:47 12/10/19 22:34 11,2-Dichloropropane ND 30.5 6.34 ug/Sample 12/10/19 09:47 12/10/19 22:34 11,3,5-Trimethylbenzene ND Eurofins TestAmerica, Knoxville 12/30/2019Page 15 of 706110 Client Sample Results Job ID: 140-17557-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Lab Sample ID: 140-17557-2Client Sample ID: Y-2977 R3 VEN DIV STACK MM18 IMPINGER #2 Matrix: AirDate Collected: 12/04/19 00:00 Date Received: 12/07/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) RL MDL 1,3-Dichlorobenzene ND 30.5 5.24 ug/Sample 12/10/19 09:47 12/10/19 22:34 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 30.5 3.41 ug/Sample 12/10/19 09:47 12/10/19 22:34 11,3-Dichloropropane ND 30.5 6.10 ug/Sample 12/10/19 09:47 12/10/19 22:34 11,4-Dichlorobenzene ND 61.0 6.22 ug/Sample 12/10/19 09:47 12/10/19 22:34 11-Chloro-1,1-difluoroethane ND 61.0 6.10 ug/Sample 12/10/19 09:47 12/10/19 22:34 12,2-dichloro-1,1-difluoroethylmethyl ether ND 30.5 8.90 ug/Sample 12/10/19 09:47 12/10/19 22:34 12,2-Dichloropropane ND 122 19.5 ug/Sample 12/10/19 09:47 12/10/19 22:34 12-Butanone (MEK)ND 61.0 9.03 ug/Sample 12/10/19 09:47 12/10/19 22:34 12-chloro-1,1,1,4,4,4-hexafluoro-2-but ene ND 61.0 6.10 ug/Sample 12/10/19 09:47 12/10/19 22:34 12-Chloro-1,1,1-Trifluoroethane ND 30.5 5.73 ug/Sample 12/10/19 09:47 12/10/19 22:34 12-Chlorotoluene ND 122 28.1 ug/Sample 12/10/19 09:47 12/10/19 22:34 12-Hexanone ND 26.6 26.6 ug/Sample 12/10/19 09:47 12/10/19 22:34 12-MTP as HFPO 2430 E 30.5 6.34 ug/Sample 12/10/19 09:47 12/10/19 22:34 14-Chlorotoluene ND 30.5 8.17 ug/Sample 12/10/19 09:47 12/10/19 22:34 14-Isopropyltoluene ND 122 19.5 ug/Sample 12/10/19 09:47 12/10/19 22:34 14-Methyl-2-pentanone (MIBK)ND 122 72.0 ug/Sample 12/10/19 09:47 12/10/19 22:34 1AcetoneND 30.5 5.85 ug/Sample 12/10/19 09:47 12/10/19 22:34 1BenzeneND 30.5 4.27 ug/Sample 12/10/19 09:47 12/10/19 22:34 1BromobenzeneND 30.5 6.83 ug/Sample 12/10/19 09:47 12/10/19 22:34 1BromochloromethaneND 30.5 5.24 ug/Sample 12/10/19 09:47 12/10/19 22:34 1BromodichloromethaneND 30.5 9.27 ug/Sample 12/10/19 09:47 12/10/19 22:34 1BromoformND 61.0 35.4 ug/Sample 12/10/19 09:47 12/10/19 22:34 1BromomethaneND 30.5 7.56 ug/Sample 12/10/19 09:47 12/10/19 22:34 1Carbon disulfide ND 30.5 4.02 ug/Sample 12/10/19 09:47 12/10/19 22:34 1Carbon tetrachloride ND 89.4 89.4 ug/Sample 12/10/19 09:47 12/10/19 22:34 1Carbonyl Difluoride ND 30.5 4.39 ug/Sample 12/10/19 09:47 12/10/19 22:34 1ChlorobenzeneND 30.5 6.59 ug/Sample 12/10/19 09:47 12/10/19 22:34 1ChlorodibromomethaneND 61.0 13.4 ug/Sample 12/10/19 09:47 12/10/19 22:34 1ChloroethaneND 30.5 3.54 ug/Sample 12/10/19 09:47 12/10/19 22:34 1ChloroformND 61.0 25.4 ug/Sample 12/10/19 09:47 12/10/19 22:34 1ChloromethaneND 30.5 2.44 ug/Sample 12/10/19 09:47 12/10/19 22:34 1cis-1,2-Dichloroethene ND 30.5 5.24 ug/Sample 12/10/19 09:47 12/10/19 22:34 1cis-1,3-Dichloropropene ND 30.5 2.93 ug/Sample 12/10/19 09:47 12/10/19 22:34 1DibromomethaneND 61.0 10.7 ug/Sample 12/10/19 09:47 12/10/19 22:34 1DichlorodifluoromethaneND 30.5 5.00 ug/Sample 12/10/19 09:47 12/10/19 22:34 1EthylbenzeneND 30.5 30.5 ug/Sample 12/10/19 09:47 12/10/19 22:34 1Heptafluoropropyl 1,2,2,2-tetrafluoroethyl ether 95.3 30.5 8.05 ug/Sample 12/10/19 09:47 12/10/19 22:34 1HexachlorobutadieneND 29.3 29.3 ug/Sample 12/10/19 09:47 12/10/19 22:34 1HFPO dimer, methyl ester as HFPO-DA ND 30.5 4.27 ug/Sample 12/10/19 09:47 12/10/19 22:34 1IsopropylbenzeneND 61.0 5.00 ug/Sample 12/10/19 09:47 12/10/19 22:34 1m,p-Xylene ND 30.5 19.5 ug/Sample 12/10/19 09:47 12/10/19 22:34 1Methylene Chloride 21.1 J 30.5 14.6 ug/Sample 12/10/19 09:47 12/10/19 22:34 1NaphthaleneND 30.5 7.81 ug/Sample 12/10/19 09:47 12/10/19 22:34 1n-Butylbenzene ND 30.5 6.59 ug/Sample 12/10/19 09:47 12/10/19 22:34 1n-Propylbenzene ND Eurofins TestAmerica, Knoxville 12/30/2019Page 16 of 706111 Client Sample Results Job ID: 140-17557-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Lab Sample ID: 140-17557-2Client Sample ID: Y-2977 R3 VEN DIV STACK MM18 IMPINGER #2 Matrix: AirDate Collected: 12/04/19 00:00 Date Received: 12/07/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) RL MDL o-Xylene ND 30.5 3.17 ug/Sample 12/10/19 09:47 12/10/19 22:34 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 30.5 5.98 ug/Sample 12/10/19 09:47 12/10/19 22:34 1sec-Butylbenzene ND 30.5 6.59 ug/Sample 12/10/19 09:47 12/10/19 22:34 1StyreneND 30.5 5.37 ug/Sample 12/10/19 09:47 12/10/19 22:34 1tert-Butylbenzene ND 30.5 4.02 ug/Sample 12/10/19 09:47 12/10/19 22:34 1TetrachloroetheneND 30.5 5.61 ug/Sample 12/10/19 09:47 12/10/19 22:34 1TolueneND 30.5 3.17 ug/Sample 12/10/19 09:47 12/10/19 22:34 1trans-1,2-Dichloroethene ND 30.5 10.7 ug/Sample 12/10/19 09:47 12/10/19 22:34 1trans-1,3-Dichloropropene ND 30.5 2.20 ug/Sample 12/10/19 09:47 12/10/19 22:34 1TrichloroetheneND 61.0 5.85 ug/Sample 12/10/19 09:47 12/10/19 22:34 1TrichlorofluoromethaneND * 61.0 14.6 ug/Sample 12/10/19 09:47 12/10/19 22:34 1Vinyl chloride ND Unknown 596 T J ug/Sample 1.13 12/10/19 09:47 12/10/19 22:34 1 Tentatively Identified Compound Dil FacAnalyzedPreparedUnit DQualifierEst. Result CAS No.RT 112/10/19 22:3412/10/19 09:47T JUnknown1110 ug/Sample 1.18 112/10/19 22:3412/10/19 09:47T JUnknown35.1 ug/Sample 1.22 1,2-Dichloroethane-d4 (Surr)121 70 -160 12/10/19 09:47 12/10/19 22:34 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery 4-Bromofluorobenzene (Surr)107 12/10/19 09:47 12/10/19 22:34 157-152 Dibromofluoromethane (Surr)106 12/10/19 09:47 12/10/19 22:34 162-134 Toluene-d8 (Surr)89 12/10/19 09:47 12/10/19 22:34 171-139 Method: 8260B - Volatile Organic Compounds (GC/MS) - DL RL MDL 2-MTP as HFPO 2230 53.3 53.3 ug/Sample 12/10/19 09:47 12/11/19 16:29 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)112 70 -160 12/10/19 09:47 12/11/19 16:29 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery 4-Bromofluorobenzene (Surr)108 12/10/19 09:47 12/11/19 16:29 157-152 Dibromofluoromethane (Surr)97 12/10/19 09:47 12/11/19 16:29 162-134 Toluene-d8 (Surr)96 12/10/19 09:47 12/11/19 16:29 171-139 Method: 9056 - Anions, Ion Chromatography RL MDL Total Fluorine 32600 6500 3250 ug/Sample 12/10/19 09:47 12/19/19 23:22 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 2680 1220 ug/Sample 12/10/19 09:47 12/24/19 01:40 20Hydrogen Fluoride ND General Chemistry RL MDL pH 4.0 HF SU 12/17/19 13:37 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Eurofins TestAmerica, Knoxville 12/30/2019Page 17 of 706112 Client Sample Results Job ID: 140-17557-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Lab Sample ID: 140-17557-3Client Sample ID: Y-2978 R3 VEN DIV STACK MM18 IMPINGER #3 Matrix: AirDate Collected: 12/04/19 00:00 Date Received: 12/07/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) RL MDL 1,1,1,2-Tetrachloroethane ND 30.4 4.01 ug/Sample 12/10/19 09:47 12/10/19 22:09 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 60.8 6.08 ug/Sample 12/10/19 09:47 12/10/19 22:09 11,1,1,3,3-Pentafluorobutane ND 30.4 4.38 ug/Sample 12/10/19 09:47 12/10/19 22:09 11,1,1-Trichloroethane ND 60.8 12.0 ug/Sample 12/10/19 09:47 12/10/19 22:09 11,1,1-Trifluoro-2,2-dichloroethane ND 60.8 6.08 ug/Sample 12/10/19 09:47 12/10/19 22:09 11,1,1-Trifluoroethane ND 30.4 5.83 ug/Sample 12/10/19 09:47 12/10/19 22:09 11,1,2,2-Tetrachloroethane ND 60.8 3.40 ug/Sample 12/10/19 09:47 12/10/19 22:09 11,1,2-Trichloro-1,2,2-trifluoroethane ND 60.8 6.08 ug/Sample 12/10/19 09:47 12/10/19 22:09 11,1,2-trichloro-1-fluoroethane ND 30.4 3.16 ug/Sample 12/10/19 09:47 12/10/19 22:09 11,1,2-Trichloroethane ND 60.8 30.4 ug/Sample 12/10/19 09:47 12/10/19 22:09 11,1-Dichloro-1-fluoroethane ND 60.8 6.08 ug/Sample 12/10/19 09:47 12/10/19 22:09 11,1-dichloro-2,2-difluoroethane ND 60.8 6.08 ug/Sample 12/10/19 09:47 12/10/19 22:09 11,1-dichloro-2,2-difluoroethene ND 30.4 3.65 ug/Sample 12/10/19 09:47 12/10/19 22:09 11,1-Dichloroethane ND 30.4 4.50 ug/Sample 12/10/19 09:47 12/10/19 22:09 11,1-Dichloroethene ND 30.4 3.28 ug/Sample 12/10/19 09:47 12/10/19 22:09 11,1-Dichloropropene ND 608 608 ug/Sample 12/10/19 09:47 12/10/19 22:09 11,1-Difluoroethene ND 60.8 6.08 ug/Sample 12/10/19 09:47 12/10/19 22:09 11,2,2-trichloro-1,1-difluoroethane ND 30.4 9.72 ug/Sample 12/10/19 09:47 12/10/19 22:09 11,2,3-Trichlorobenzene ND 30.4 7.53 ug/Sample 12/10/19 09:47 12/10/19 22:09 11,2,3-Trichloropropane ND 30.4 10.2 ug/Sample 12/10/19 09:47 12/10/19 22:09 11,2,4-Trichlorobenzene ND 30.4 6.32 ug/Sample 12/10/19 09:47 12/10/19 22:09 11,2,4-Trimethylbenzene ND 60.8 10.7 ug/Sample 12/10/19 09:47 12/10/19 22:09 11,2-Dibromo-3-Chloropropane ND 30.4 4.01 ug/Sample 12/10/19 09:47 12/10/19 22:09 11,2-Dibromoethane (EDB)ND 60.8 6.08 ug/Sample 12/10/19 09:47 12/10/19 22:09 11,2-dichloro-1,1-difluoroethane ND 30.4 5.35 ug/Sample 12/10/19 09:47 12/10/19 22:09 11,2-Dichlorobenzene ND 30.4 5.10 ug/Sample 12/10/19 09:47 12/10/19 22:09 11,2-Dichloroethane ND 30.4 3.04 ug/Sample 12/10/19 09:47 12/10/19 22:09 11,2-Dichloropropane ND 30.4 6.32 ug/Sample 12/10/19 09:47 12/10/19 22:09 11,3,5-Trimethylbenzene ND 30.4 5.23 ug/Sample 12/10/19 09:47 12/10/19 22:09 11,3-Dichlorobenzene ND 30.4 3.40 ug/Sample 12/10/19 09:47 12/10/19 22:09 11,3-Dichloropropane ND 30.4 6.08 ug/Sample 12/10/19 09:47 12/10/19 22:09 11,4-Dichlorobenzene ND 60.8 6.20 ug/Sample 12/10/19 09:47 12/10/19 22:09 11-Chloro-1,1-difluoroethane ND 60.8 6.08 ug/Sample 12/10/19 09:47 12/10/19 22:09 12,2-dichloro-1,1-difluoroethylmethyl ether ND 30.4 8.87 ug/Sample 12/10/19 09:47 12/10/19 22:09 12,2-Dichloropropane ND 122 19.4 ug/Sample 12/10/19 09:47 12/10/19 22:09 12-Butanone (MEK)ND 60.8 8.99 ug/Sample 12/10/19 09:47 12/10/19 22:09 12-chloro-1,1,1,4,4,4-hexafluoro-2-but ene ND 60.8 6.08 ug/Sample 12/10/19 09:47 12/10/19 22:09 12-Chloro-1,1,1-Trifluoroethane ND 30.4 5.71 ug/Sample 12/10/19 09:47 12/10/19 22:09 12-Chlorotoluene ND 122 28.0 ug/Sample 12/10/19 09:47 12/10/19 22:09 12-Hexanone ND 26.6 26.6 ug/Sample 12/10/19 09:47 12/10/19 22:09 12-MTP as HFPO 2130 E 30.4 6.32 ug/Sample 12/10/19 09:47 12/10/19 22:09 14-Chlorotoluene ND 30.4 8.14 ug/Sample 12/10/19 09:47 12/10/19 22:09 14-Isopropyltoluene ND 122 19.4 ug/Sample 12/10/19 09:47 12/10/19 22:09 14-Methyl-2-pentanone (MIBK)ND 122 71.7 ug/Sample 12/10/19 09:47 12/10/19 22:09 1AcetoneND 30.4 5.83 ug/Sample 12/10/19 09:47 12/10/19 22:09 1BenzeneND 30.4 4.25 ug/Sample 12/10/19 09:47 12/10/19 22:09 1BromobenzeneND Eurofins TestAmerica, Knoxville 12/30/2019Page 18 of 706113 Client Sample Results Job ID: 140-17557-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Lab Sample ID: 140-17557-3Client Sample ID: Y-2978 R3 VEN DIV STACK MM18 IMPINGER #3 Matrix: AirDate Collected: 12/04/19 00:00 Date Received: 12/07/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) RL MDL Bromochloromethane ND 30.4 6.81 ug/Sample 12/10/19 09:47 12/10/19 22:09 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 30.4 5.23 ug/Sample 12/10/19 09:47 12/10/19 22:09 1BromodichloromethaneND 30.4 9.24 ug/Sample 12/10/19 09:47 12/10/19 22:09 1BromoformND 60.8 35.2 ug/Sample 12/10/19 09:47 12/10/19 22:09 1BromomethaneND 30.4 7.53 ug/Sample 12/10/19 09:47 12/10/19 22:09 1Carbon disulfide ND 30.4 4.01 ug/Sample 12/10/19 09:47 12/10/19 22:09 1Carbon tetrachloride ND 89.4 89.4 ug/Sample 12/10/19 09:47 12/10/19 22:09 1Carbonyl Difluoride ND 30.4 4.38 ug/Sample 12/10/19 09:47 12/10/19 22:09 1ChlorobenzeneND 30.4 6.56 ug/Sample 12/10/19 09:47 12/10/19 22:09 1ChlorodibromomethaneND 60.8 13.4 ug/Sample 12/10/19 09:47 12/10/19 22:09 1ChloroethaneND 30.4 3.52 ug/Sample 12/10/19 09:47 12/10/19 22:09 1ChloroformND 60.8 25.3 ug/Sample 12/10/19 09:47 12/10/19 22:09 1ChloromethaneND 30.4 2.43 ug/Sample 12/10/19 09:47 12/10/19 22:09 1cis-1,2-Dichloroethene ND 30.4 5.23 ug/Sample 12/10/19 09:47 12/10/19 22:09 1cis-1,3-Dichloropropene ND 30.4 2.92 ug/Sample 12/10/19 09:47 12/10/19 22:09 1DibromomethaneND 60.8 10.7 ug/Sample 12/10/19 09:47 12/10/19 22:09 1DichlorodifluoromethaneND 30.4 4.98 ug/Sample 12/10/19 09:47 12/10/19 22:09 1EthylbenzeneND 30.4 30.4 ug/Sample 12/10/19 09:47 12/10/19 22:09 1Heptafluoropropyl 1,2,2,2-tetrafluoroethyl ether 33.4 30.4 8.02 ug/Sample 12/10/19 09:47 12/10/19 22:09 1HexachlorobutadieneND 29.2 29.2 ug/Sample 12/10/19 09:47 12/10/19 22:09 1HFPO dimer, methyl ester as HFPO-DA ND 30.4 4.25 ug/Sample 12/10/19 09:47 12/10/19 22:09 1IsopropylbenzeneND 60.8 4.98 ug/Sample 12/10/19 09:47 12/10/19 22:09 1m,p-Xylene ND 30.4 19.4 ug/Sample 12/10/19 09:47 12/10/19 22:09 1Methylene Chloride 20.2 J 30.4 14.6 ug/Sample 12/10/19 09:47 12/10/19 22:09 1NaphthaleneND 30.4 7.78 ug/Sample 12/10/19 09:47 12/10/19 22:09 1n-Butylbenzene ND 30.4 6.56 ug/Sample 12/10/19 09:47 12/10/19 22:09 1n-Propylbenzene ND 30.4 3.16 ug/Sample 12/10/19 09:47 12/10/19 22:09 1o-Xylene ND 30.4 5.95 ug/Sample 12/10/19 09:47 12/10/19 22:09 1sec-Butylbenzene ND 30.4 6.56 ug/Sample 12/10/19 09:47 12/10/19 22:09 1StyreneND 30.4 5.35 ug/Sample 12/10/19 09:47 12/10/19 22:09 1tert-Butylbenzene ND 30.4 4.01 ug/Sample 12/10/19 09:47 12/10/19 22:09 1TetrachloroetheneND 30.4 5.59 ug/Sample 12/10/19 09:47 12/10/19 22:09 1TolueneND 30.4 3.16 ug/Sample 12/10/19 09:47 12/10/19 22:09 1trans-1,2-Dichloroethene ND 30.4 10.7 ug/Sample 12/10/19 09:47 12/10/19 22:09 1trans-1,3-Dichloropropene ND 30.4 2.19 ug/Sample 12/10/19 09:47 12/10/19 22:09 1TrichloroetheneND 60.8 5.83 ug/Sample 12/10/19 09:47 12/10/19 22:09 1TrichlorofluoromethaneND * 60.8 14.6 ug/Sample 12/10/19 09:47 12/10/19 22:09 1Vinyl chloride ND Unknown 411 T J ug/Sample 1.13 12/10/19 09:47 12/10/19 22:09 1 Tentatively Identified Compound Dil FacAnalyzedPreparedUnit DQualifierEst. Result CAS No.RT 112/10/19 22:0912/10/19 09:47T JUnknown747 ug/Sample 1.18 1,2-Dichloroethane-d4 (Surr)114 70 -160 12/10/19 09:47 12/10/19 22:09 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery 4-Bromofluorobenzene (Surr)107 12/10/19 09:47 12/10/19 22:09 157-152 Dibromofluoromethane (Surr)103 12/10/19 09:47 12/10/19 22:09 162-134 Eurofins TestAmerica, Knoxville 12/30/2019Page 19 of 706114 Client Sample Results Job ID: 140-17557-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Lab Sample ID: 140-17557-3Client Sample ID: Y-2978 R3 VEN DIV STACK MM18 IMPINGER #3 Matrix: AirDate Collected: 12/04/19 00:00 Date Received: 12/07/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Toluene-d8 (Surr)92 71 -139 12/10/19 09:47 12/10/19 22:09 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Method: 8260B - Volatile Organic Compounds (GC/MS) - DL RL MDL 2-MTP as HFPO 1970 53.1 53.1 ug/Sample 12/10/19 09:47 12/11/19 16:53 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)110 70 -160 12/10/19 09:47 12/11/19 16:53 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery 4-Bromofluorobenzene (Surr)108 12/10/19 09:47 12/11/19 16:53 157-152 Dibromofluoromethane (Surr)98 12/10/19 09:47 12/11/19 16:53 162-134 Toluene-d8 (Surr)95 12/10/19 09:47 12/11/19 16:53 171-139 Method: 9056 - Anions, Ion Chromatography RL MDL Total Fluorine 13600 6480 3240 ug/Sample 12/10/19 09:47 12/20/19 00:30 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 2670 1220 ug/Sample 12/10/19 09:47 12/24/19 02:48 20Hydrogen Fluoride ND General Chemistry RL MDL pH 5.0 HF SU 12/17/19 13:37 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Lab Sample ID: 140-17557-4Client Sample ID: Y-2979 R3 VEN DIV STACK MM18 IMPINGER #4 Matrix: AirDate Collected: 12/04/19 00:00 Date Received: 12/07/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) RL MDL 1,1,1,2-Tetrachloroethane ND 29.7 3.93 ug/Sample 12/10/19 09:47 12/10/19 21:45 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 59.5 5.95 ug/Sample 12/10/19 09:47 12/10/19 21:45 11,1,1,3,3-Pentafluorobutane ND 29.7 4.28 ug/Sample 12/10/19 09:47 12/10/19 21:45 11,1,1-Trichloroethane ND 59.5 11.8 ug/Sample 12/10/19 09:47 12/10/19 21:45 11,1,1-Trifluoro-2,2-dichloroethane ND 59.5 5.95 ug/Sample 12/10/19 09:47 12/10/19 21:45 11,1,1-Trifluoroethane ND 29.7 5.71 ug/Sample 12/10/19 09:47 12/10/19 21:45 11,1,2,2-Tetrachloroethane ND 59.5 3.33 ug/Sample 12/10/19 09:47 12/10/19 21:45 11,1,2-Trichloro-1,2,2-trifluoroethane ND 59.5 5.95 ug/Sample 12/10/19 09:47 12/10/19 21:45 11,1,2-trichloro-1-fluoroethane ND 29.7 3.09 ug/Sample 12/10/19 09:47 12/10/19 21:45 11,1,2-Trichloroethane ND 59.5 29.7 ug/Sample 12/10/19 09:47 12/10/19 21:45 11,1-Dichloro-1-fluoroethane ND 59.5 5.95 ug/Sample 12/10/19 09:47 12/10/19 21:45 11,1-dichloro-2,2-difluoroethane ND 59.5 5.95 ug/Sample 12/10/19 09:47 12/10/19 21:45 11,1-dichloro-2,2-difluoroethene ND 29.7 3.57 ug/Sample 12/10/19 09:47 12/10/19 21:45 11,1-Dichloroethane ND 29.7 4.40 ug/Sample 12/10/19 09:47 12/10/19 21:45 11,1-Dichloroethene ND 29.7 3.21 ug/Sample 12/10/19 09:47 12/10/19 21:45 11,1-Dichloropropene ND 595 595 ug/Sample 12/10/19 09:47 12/10/19 21:45 11,1-Difluoroethene ND 59.5 5.95 ug/Sample 12/10/19 09:47 12/10/19 21:45 11,2,2-trichloro-1,1-difluoroethane ND 29.7 9.52 ug/Sample 12/10/19 09:47 12/10/19 21:45 11,2,3-Trichlorobenzene ND 29.7 7.38 ug/Sample 12/10/19 09:47 12/10/19 21:45 11,2,3-Trichloropropane ND Eurofins TestAmerica, Knoxville 12/30/2019Page 20 of 706115 Client Sample Results Job ID: 140-17557-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Lab Sample ID: 140-17557-4Client Sample ID: Y-2979 R3 VEN DIV STACK MM18 IMPINGER #4 Matrix: AirDate Collected: 12/04/19 00:00 Date Received: 12/07/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) RL MDL 1,2,4-Trichlorobenzene ND 29.7 10.0 ug/Sample 12/10/19 09:47 12/10/19 21:45 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 29.7 6.19 ug/Sample 12/10/19 09:47 12/10/19 21:45 11,2,4-Trimethylbenzene ND 59.5 10.5 ug/Sample 12/10/19 09:47 12/10/19 21:45 11,2-Dibromo-3-Chloropropane ND 29.7 3.93 ug/Sample 12/10/19 09:47 12/10/19 21:45 11,2-Dibromoethane (EDB)ND 59.5 5.95 ug/Sample 12/10/19 09:47 12/10/19 21:45 11,2-dichloro-1,1-difluoroethane ND 29.7 5.24 ug/Sample 12/10/19 09:47 12/10/19 21:45 11,2-Dichlorobenzene ND 29.7 5.00 ug/Sample 12/10/19 09:47 12/10/19 21:45 11,2-Dichloroethane ND 29.7 2.97 ug/Sample 12/10/19 09:47 12/10/19 21:45 11,2-Dichloropropane ND 29.7 6.19 ug/Sample 12/10/19 09:47 12/10/19 21:45 11,3,5-Trimethylbenzene ND 29.7 5.12 ug/Sample 12/10/19 09:47 12/10/19 21:45 11,3-Dichlorobenzene ND 29.7 3.33 ug/Sample 12/10/19 09:47 12/10/19 21:45 11,3-Dichloropropane ND 29.7 5.95 ug/Sample 12/10/19 09:47 12/10/19 21:45 11,4-Dichlorobenzene ND 59.5 6.07 ug/Sample 12/10/19 09:47 12/10/19 21:45 11-Chloro-1,1-difluoroethane ND 59.5 5.95 ug/Sample 12/10/19 09:47 12/10/19 21:45 12,2-dichloro-1,1-difluoroethylmethyl ether ND 29.7 8.69 ug/Sample 12/10/19 09:47 12/10/19 21:45 12,2-Dichloropropane ND 119 19.0 ug/Sample 12/10/19 09:47 12/10/19 21:45 12-Butanone (MEK)ND 59.5 8.81 ug/Sample 12/10/19 09:47 12/10/19 21:45 12-chloro-1,1,1,4,4,4-hexafluoro-2-but ene ND 59.5 5.95 ug/Sample 12/10/19 09:47 12/10/19 21:45 12-Chloro-1,1,1-Trifluoroethane ND 29.7 5.59 ug/Sample 12/10/19 09:47 12/10/19 21:45 12-Chlorotoluene ND 119 27.4 ug/Sample 12/10/19 09:47 12/10/19 21:45 12-Hexanone ND 25.9 25.9 ug/Sample 12/10/19 09:47 12/10/19 21:45 12-MTP as HFPO 2560 E 29.7 6.19 ug/Sample 12/10/19 09:47 12/10/19 21:45 14-Chlorotoluene ND 29.7 7.97 ug/Sample 12/10/19 09:47 12/10/19 21:45 14-Isopropyltoluene ND 119 19.0 ug/Sample 12/10/19 09:47 12/10/19 21:45 14-Methyl-2-pentanone (MIBK)ND 119 70.2 ug/Sample 12/10/19 09:47 12/10/19 21:45 1AcetoneND 29.7 5.71 ug/Sample 12/10/19 09:47 12/10/19 21:45 1BenzeneND 29.7 4.16 ug/Sample 12/10/19 09:47 12/10/19 21:45 1BromobenzeneND 29.7 6.66 ug/Sample 12/10/19 09:47 12/10/19 21:45 1BromochloromethaneND 29.7 5.12 ug/Sample 12/10/19 09:47 12/10/19 21:45 1BromodichloromethaneND 29.7 9.04 ug/Sample 12/10/19 09:47 12/10/19 21:45 1BromoformND 59.5 34.5 ug/Sample 12/10/19 09:47 12/10/19 21:45 1BromomethaneND 29.7 7.38 ug/Sample 12/10/19 09:47 12/10/19 21:45 1Carbon disulfide ND 29.7 3.93 ug/Sample 12/10/19 09:47 12/10/19 21:45 1Carbon tetrachloride ND 87.2 87.2 ug/Sample 12/10/19 09:47 12/10/19 21:45 1Carbonyl Difluoride ND 29.7 4.28 ug/Sample 12/10/19 09:47 12/10/19 21:45 1ChlorobenzeneND 29.7 6.43 ug/Sample 12/10/19 09:47 12/10/19 21:45 1ChlorodibromomethaneND 59.5 13.1 ug/Sample 12/10/19 09:47 12/10/19 21:45 1ChloroethaneND 29.7 3.45 ug/Sample 12/10/19 09:47 12/10/19 21:45 1ChloroformND 59.5 24.7 ug/Sample 12/10/19 09:47 12/10/19 21:45 1ChloromethaneND 29.7 2.38 ug/Sample 12/10/19 09:47 12/10/19 21:45 1cis-1,2-Dichloroethene ND 29.7 5.12 ug/Sample 12/10/19 09:47 12/10/19 21:45 1cis-1,3-Dichloropropene ND 29.7 2.86 ug/Sample 12/10/19 09:47 12/10/19 21:45 1DibromomethaneND 59.5 10.5 ug/Sample 12/10/19 09:47 12/10/19 21:45 1DichlorodifluoromethaneND 29.7 4.88 ug/Sample 12/10/19 09:47 12/10/19 21:45 1EthylbenzeneND 29.7 29.7 ug/Sample 12/10/19 09:47 12/10/19 21:45 1Heptafluoropropyl 1,2,2,2-tetrafluoroethyl ether ND Eurofins TestAmerica, Knoxville 12/30/2019Page 21 of 706116 Client Sample Results Job ID: 140-17557-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Lab Sample ID: 140-17557-4Client Sample ID: Y-2979 R3 VEN DIV STACK MM18 IMPINGER #4 Matrix: AirDate Collected: 12/04/19 00:00 Date Received: 12/07/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) RL MDL Hexachlorobutadiene ND 29.7 7.85 ug/Sample 12/10/19 09:47 12/10/19 21:45 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 28.5 28.5 ug/Sample 12/10/19 09:47 12/10/19 21:45 1HFPO dimer, methyl ester as HFPO-DA ND 29.7 4.16 ug/Sample 12/10/19 09:47 12/10/19 21:45 1IsopropylbenzeneND 59.5 4.88 ug/Sample 12/10/19 09:47 12/10/19 21:45 1m,p-Xylene ND 29.7 19.0 ug/Sample 12/10/19 09:47 12/10/19 21:45 1Methylene Chloride 20.0 J 29.7 14.3 ug/Sample 12/10/19 09:47 12/10/19 21:45 1NaphthaleneND 29.7 7.62 ug/Sample 12/10/19 09:47 12/10/19 21:45 1n-Butylbenzene ND 29.7 6.43 ug/Sample 12/10/19 09:47 12/10/19 21:45 1n-Propylbenzene ND 29.7 3.09 ug/Sample 12/10/19 09:47 12/10/19 21:45 1o-Xylene ND 29.7 5.83 ug/Sample 12/10/19 09:47 12/10/19 21:45 1sec-Butylbenzene ND 29.7 6.43 ug/Sample 12/10/19 09:47 12/10/19 21:45 1StyreneND 29.7 5.24 ug/Sample 12/10/19 09:47 12/10/19 21:45 1tert-Butylbenzene ND 29.7 3.93 ug/Sample 12/10/19 09:47 12/10/19 21:45 1TetrachloroetheneND 29.7 5.47 ug/Sample 12/10/19 09:47 12/10/19 21:45 1TolueneND 29.7 3.09 ug/Sample 12/10/19 09:47 12/10/19 21:45 1trans-1,2-Dichloroethene ND 29.7 10.5 ug/Sample 12/10/19 09:47 12/10/19 21:45 1trans-1,3-Dichloropropene ND 29.7 2.14 ug/Sample 12/10/19 09:47 12/10/19 21:45 1TrichloroetheneND 59.5 5.71 ug/Sample 12/10/19 09:47 12/10/19 21:45 1TrichlorofluoromethaneND * 59.5 14.3 ug/Sample 12/10/19 09:47 12/10/19 21:45 1Vinyl chloride ND Butanoic acid, heptafluoro-, sodium salt 545 T J N ug/Sample 1.13 2218-54-4 12/10/19 09:47 12/10/19 21:45 1 Tentatively Identified Compound Dil FacAnalyzedPreparedUnit DQualifierEst. Result CAS No.RT 112/10/19 21:4512/10/19 09:47T J NPropane, 1,1,1,2,2,3,3-heptafluoro-3- [(trifluoroethenyl)oxy] 1623-05-8761ug/Sample 1.18 1,2-Dichloroethane-d4 (Surr)118 70 -160 12/10/19 09:47 12/10/19 21:45 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery 4-Bromofluorobenzene (Surr)110 12/10/19 09:47 12/10/19 21:45 157-152 Dibromofluoromethane (Surr)107 12/10/19 09:47 12/10/19 21:45 162-134 Toluene-d8 (Surr)91 12/10/19 09:47 12/10/19 21:45 171-139 Method: 8260B - Volatile Organic Compounds (GC/MS) - DL RL MDL 2-MTP as HFPO 2330 65.0 65.0 ug/Sample 12/10/19 09:47 12/11/19 17:18 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)112 70 -160 12/10/19 09:47 12/11/19 17:18 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery 4-Bromofluorobenzene (Surr)107 12/10/19 09:47 12/11/19 17:18 157-152 Dibromofluoromethane (Surr)98 12/10/19 09:47 12/11/19 17:18 162-134 Toluene-d8 (Surr)95 12/10/19 09:47 12/11/19 17:18 171-139 Method: 9056 - Anions, Ion Chromatography RL MDL Total Fluorine 5730 J 6350 3170 ug/Sample 12/10/19 09:47 12/20/19 00:53 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 2620 1190 ug/Sample 12/10/19 09:47 12/24/19 03:56 20Hydrogen Fluoride ND Eurofins TestAmerica, Knoxville 12/30/2019Page 22 of 706117 Client Sample Results Job ID: 140-17557-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Lab Sample ID: 140-17557-4Client Sample ID: Y-2979 R3 VEN DIV STACK MM18 IMPINGER #4 Matrix: AirDate Collected: 12/04/19 00:00 Date Received: 12/07/19 08:00 Sample Container: Plastic 250ml - unpreserved General Chemistry RL MDL pH 5.0 HF SU 12/17/19 13:37 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Lab Sample ID: 140-17557-5Client Sample ID: Y-2980 R3 VEN DIV STACK MM18 IMPINGER #5 Matrix: AirDate Collected: 12/04/19 00:00 Date Received: 12/07/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) RL MDL 1,1,1,2-Tetrachloroethane ND 31.0 4.09 ug/Sample 12/10/19 09:47 12/10/19 21:20 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 61.9 6.19 ug/Sample 12/10/19 09:47 12/10/19 21:20 11,1,1,3,3-Pentafluorobutane ND 31.0 4.46 ug/Sample 12/10/19 09:47 12/10/19 21:20 11,1,1-Trichloroethane ND 61.9 12.3 ug/Sample 12/10/19 09:47 12/10/19 21:20 11,1,1-Trifluoro-2,2-dichloroethane ND 61.9 6.19 ug/Sample 12/10/19 09:47 12/10/19 21:20 11,1,1-Trifluoroethane ND 31.0 5.95 ug/Sample 12/10/19 09:47 12/10/19 21:20 11,1,2,2-Tetrachloroethane ND 61.9 3.47 ug/Sample 12/10/19 09:47 12/10/19 21:20 11,1,2-Trichloro-1,2,2-trifluoroethane ND 61.9 6.19 ug/Sample 12/10/19 09:47 12/10/19 21:20 11,1,2-trichloro-1-fluoroethane ND 31.0 3.22 ug/Sample 12/10/19 09:47 12/10/19 21:20 11,1,2-Trichloroethane ND 61.9 31.0 ug/Sample 12/10/19 09:47 12/10/19 21:20 11,1-Dichloro-1-fluoroethane ND 61.9 6.19 ug/Sample 12/10/19 09:47 12/10/19 21:20 11,1-dichloro-2,2-difluoroethane ND 61.9 6.19 ug/Sample 12/10/19 09:47 12/10/19 21:20 11,1-dichloro-2,2-difluoroethene ND 31.0 3.72 ug/Sample 12/10/19 09:47 12/10/19 21:20 11,1-Dichloroethane ND 31.0 4.58 ug/Sample 12/10/19 09:47 12/10/19 21:20 11,1-Dichloroethene ND 31.0 3.34 ug/Sample 12/10/19 09:47 12/10/19 21:20 11,1-Dichloropropene ND 619 619 ug/Sample 12/10/19 09:47 12/10/19 21:20 11,1-Difluoroethene ND 61.9 6.19 ug/Sample 12/10/19 09:47 12/10/19 21:20 11,2,2-trichloro-1,1-difluoroethane ND 31.0 9.91 ug/Sample 12/10/19 09:47 12/10/19 21:20 11,2,3-Trichlorobenzene ND 31.0 7.68 ug/Sample 12/10/19 09:47 12/10/19 21:20 11,2,3-Trichloropropane ND 31.0 10.4 ug/Sample 12/10/19 09:47 12/10/19 21:20 11,2,4-Trichlorobenzene ND 31.0 6.44 ug/Sample 12/10/19 09:47 12/10/19 21:20 11,2,4-Trimethylbenzene ND 61.9 10.9 ug/Sample 12/10/19 09:47 12/10/19 21:20 11,2-Dibromo-3-Chloropropane ND 31.0 4.09 ug/Sample 12/10/19 09:47 12/10/19 21:20 11,2-Dibromoethane (EDB)ND 61.9 6.19 ug/Sample 12/10/19 09:47 12/10/19 21:20 11,2-dichloro-1,1-difluoroethane ND 31.0 5.45 ug/Sample 12/10/19 09:47 12/10/19 21:20 11,2-Dichlorobenzene ND 31.0 5.20 ug/Sample 12/10/19 09:47 12/10/19 21:20 11,2-Dichloroethane ND 31.0 3.10 ug/Sample 12/10/19 09:47 12/10/19 21:20 11,2-Dichloropropane ND 31.0 6.44 ug/Sample 12/10/19 09:47 12/10/19 21:20 11,3,5-Trimethylbenzene ND 31.0 5.33 ug/Sample 12/10/19 09:47 12/10/19 21:20 11,3-Dichlorobenzene ND 31.0 3.47 ug/Sample 12/10/19 09:47 12/10/19 21:20 11,3-Dichloropropane ND 31.0 6.19 ug/Sample 12/10/19 09:47 12/10/19 21:20 11,4-Dichlorobenzene ND 61.9 6.32 ug/Sample 12/10/19 09:47 12/10/19 21:20 11-Chloro-1,1-difluoroethane ND 61.9 6.19 ug/Sample 12/10/19 09:47 12/10/19 21:20 12,2-dichloro-1,1-difluoroethylmethyl ether ND 31.0 9.04 ug/Sample 12/10/19 09:47 12/10/19 21:20 12,2-Dichloropropane ND 124 19.8 ug/Sample 12/10/19 09:47 12/10/19 21:20 12-Butanone (MEK)ND 61.9 9.17 ug/Sample 12/10/19 09:47 12/10/19 21:20 12-chloro-1,1,1,4,4,4-hexafluoro-2-but ene ND Eurofins TestAmerica, Knoxville 12/30/2019Page 23 of 706118 Client Sample Results Job ID: 140-17557-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Lab Sample ID: 140-17557-5Client Sample ID: Y-2980 R3 VEN DIV STACK MM18 IMPINGER #5 Matrix: AirDate Collected: 12/04/19 00:00 Date Received: 12/07/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) RL MDL 2-Chloro-1,1,1-Trifluoroethane ND 61.9 6.19 ug/Sample 12/10/19 09:47 12/10/19 21:20 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 31.0 5.82 ug/Sample 12/10/19 09:47 12/10/19 21:20 12-Chlorotoluene ND 124 28.5 ug/Sample 12/10/19 09:47 12/10/19 21:20 12-Hexanone ND 27.1 27.1 ug/Sample 12/10/19 09:47 12/10/19 21:20 12-MTP as HFPO 2070 31.0 6.44 ug/Sample 12/10/19 09:47 12/10/19 21:20 14-Chlorotoluene ND 31.0 8.30 ug/Sample 12/10/19 09:47 12/10/19 21:20 14-Isopropyltoluene ND 124 19.8 ug/Sample 12/10/19 09:47 12/10/19 21:20 14-Methyl-2-pentanone (MIBK)ND 124 73.1 ug/Sample 12/10/19 09:47 12/10/19 21:20 1AcetoneND 31.0 5.95 ug/Sample 12/10/19 09:47 12/10/19 21:20 1BenzeneND 31.0 4.34 ug/Sample 12/10/19 09:47 12/10/19 21:20 1BromobenzeneND 31.0 6.94 ug/Sample 12/10/19 09:47 12/10/19 21:20 1BromochloromethaneND 31.0 5.33 ug/Sample 12/10/19 09:47 12/10/19 21:20 1BromodichloromethaneND 31.0 9.41 ug/Sample 12/10/19 09:47 12/10/19 21:20 1BromoformND 61.9 35.9 ug/Sample 12/10/19 09:47 12/10/19 21:20 1BromomethaneND 31.0 7.68 ug/Sample 12/10/19 09:47 12/10/19 21:20 1Carbon disulfide ND 31.0 4.09 ug/Sample 12/10/19 09:47 12/10/19 21:20 1Carbon tetrachloride ND 90.9 90.9 ug/Sample 12/10/19 09:47 12/10/19 21:20 1Carbonyl Difluoride ND 31.0 4.46 ug/Sample 12/10/19 09:47 12/10/19 21:20 1ChlorobenzeneND 31.0 6.69 ug/Sample 12/10/19 09:47 12/10/19 21:20 1ChlorodibromomethaneND 61.9 13.6 ug/Sample 12/10/19 09:47 12/10/19 21:20 1ChloroethaneND 31.0 3.59 ug/Sample 12/10/19 09:47 12/10/19 21:20 1ChloroformND 61.9 25.8 ug/Sample 12/10/19 09:47 12/10/19 21:20 1ChloromethaneND 31.0 2.48 ug/Sample 12/10/19 09:47 12/10/19 21:20 1cis-1,2-Dichloroethene ND 31.0 5.33 ug/Sample 12/10/19 09:47 12/10/19 21:20 1cis-1,3-Dichloropropene ND 31.0 2.97 ug/Sample 12/10/19 09:47 12/10/19 21:20 1DibromomethaneND 61.9 10.9 ug/Sample 12/10/19 09:47 12/10/19 21:20 1DichlorodifluoromethaneND 31.0 5.08 ug/Sample 12/10/19 09:47 12/10/19 21:20 1EthylbenzeneND 31.0 31.0 ug/Sample 12/10/19 09:47 12/10/19 21:20 1Heptafluoropropyl 1,2,2,2-tetrafluoroethyl ether ND 31.0 8.18 ug/Sample 12/10/19 09:47 12/10/19 21:20 1HexachlorobutadieneND 29.7 29.7 ug/Sample 12/10/19 09:47 12/10/19 21:20 1HFPO dimer, methyl ester as HFPO-DA ND 31.0 4.34 ug/Sample 12/10/19 09:47 12/10/19 21:20 1IsopropylbenzeneND 61.9 5.08 ug/Sample 12/10/19 09:47 12/10/19 21:20 1m,p-Xylene ND 31.0 19.8 ug/Sample 12/10/19 09:47 12/10/19 21:20 1Methylene Chloride ND 31.0 14.9 ug/Sample 12/10/19 09:47 12/10/19 21:20 1NaphthaleneND 31.0 7.93 ug/Sample 12/10/19 09:47 12/10/19 21:20 1n-Butylbenzene ND 31.0 6.69 ug/Sample 12/10/19 09:47 12/10/19 21:20 1n-Propylbenzene ND 31.0 3.22 ug/Sample 12/10/19 09:47 12/10/19 21:20 1o-Xylene ND 31.0 6.07 ug/Sample 12/10/19 09:47 12/10/19 21:20 1sec-Butylbenzene ND 31.0 6.69 ug/Sample 12/10/19 09:47 12/10/19 21:20 1StyreneND 31.0 5.45 ug/Sample 12/10/19 09:47 12/10/19 21:20 1tert-Butylbenzene ND 31.0 4.09 ug/Sample 12/10/19 09:47 12/10/19 21:20 1TetrachloroetheneND 31.0 5.70 ug/Sample 12/10/19 09:47 12/10/19 21:20 1TolueneND 31.0 3.22 ug/Sample 12/10/19 09:47 12/10/19 21:20 1trans-1,2-Dichloroethene ND 31.0 10.9 ug/Sample 12/10/19 09:47 12/10/19 21:20 1trans-1,3-Dichloropropene ND 31.0 2.23 ug/Sample 12/10/19 09:47 12/10/19 21:20 1TrichloroetheneND 61.9 5.95 ug/Sample 12/10/19 09:47 12/10/19 21:20 1TrichlorofluoromethaneND * Eurofins TestAmerica, Knoxville 12/30/2019Page 24 of 706119 Client Sample Results Job ID: 140-17557-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Lab Sample ID: 140-17557-5Client Sample ID: Y-2980 R3 VEN DIV STACK MM18 IMPINGER #5 Matrix: AirDate Collected: 12/04/19 00:00 Date Received: 12/07/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) RL MDL Vinyl chloride ND 61.9 14.9 ug/Sample 12/10/19 09:47 12/10/19 21:20 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Propene, hexafluoro-445 T J N ug/Sample 1.13 116-15-4 12/10/19 09:47 12/10/19 21:20 1 Tentatively Identified Compound Dil FacAnalyzedPreparedUnit DQualifierEst. Result CAS No.RT 112/10/19 21:2012/10/19 09:47T JUnknown454 ug/Sample 1.18 1,2-Dichloroethane-d4 (Surr)117 70 -160 12/10/19 09:47 12/10/19 21:20 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery 4-Bromofluorobenzene (Surr)108 12/10/19 09:47 12/10/19 21:20 157-152 Dibromofluoromethane (Surr)105 12/10/19 09:47 12/10/19 21:20 162-134 Toluene-d8 (Surr)91 12/10/19 09:47 12/10/19 21:20 171-139 Method: 9056 - Anions, Ion Chromatography RL MDL Total Fluorine 5710 J 6610 3300 ug/Sample 12/10/19 09:47 12/20/19 01:16 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 2730 1240 ug/Sample 12/10/19 09:47 12/24/19 04:19 20Hydrogen Fluoride ND General Chemistry RL MDL pH 5.0 HF SU 12/17/19 13:37 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Lab Sample ID: 140-17557-6Client Sample ID: Y-2981 R3 VEN DIV STACK MM18 IMPINGER #6 Matrix: AirDate Collected: 12/04/19 00:00 Date Received: 12/07/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) RL MDL 1,1,1,2-Tetrachloroethane ND 30.1 3.97 ug/Sample 12/10/19 09:47 12/10/19 20:56 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 60.1 6.01 ug/Sample 12/10/19 09:47 12/10/19 20:56 11,1,1,3,3-Pentafluorobutane ND 30.1 4.33 ug/Sample 12/10/19 09:47 12/10/19 20:56 11,1,1-Trichloroethane ND 60.1 11.9 ug/Sample 12/10/19 09:47 12/10/19 20:56 11,1,1-Trifluoro-2,2-dichloroethane ND 60.1 6.01 ug/Sample 12/10/19 09:47 12/10/19 20:56 11,1,1-Trifluoroethane ND 30.1 5.77 ug/Sample 12/10/19 09:47 12/10/19 20:56 11,1,2,2-Tetrachloroethane ND 60.1 3.37 ug/Sample 12/10/19 09:47 12/10/19 20:56 11,1,2-Trichloro-1,2,2-trifluoroethane ND 60.1 6.01 ug/Sample 12/10/19 09:47 12/10/19 20:56 11,1,2-trichloro-1-fluoroethane ND 30.1 3.13 ug/Sample 12/10/19 09:47 12/10/19 20:56 11,1,2-Trichloroethane ND 60.1 30.1 ug/Sample 12/10/19 09:47 12/10/19 20:56 11,1-Dichloro-1-fluoroethane ND 60.1 6.01 ug/Sample 12/10/19 09:47 12/10/19 20:56 11,1-dichloro-2,2-difluoroethane ND 60.1 6.01 ug/Sample 12/10/19 09:47 12/10/19 20:56 11,1-dichloro-2,2-difluoroethene ND 30.1 3.61 ug/Sample 12/10/19 09:47 12/10/19 20:56 11,1-Dichloroethane ND 30.1 4.45 ug/Sample 12/10/19 09:47 12/10/19 20:56 11,1-Dichloroethene ND 30.1 3.25 ug/Sample 12/10/19 09:47 12/10/19 20:56 11,1-Dichloropropene ND 601 601 ug/Sample 12/10/19 09:47 12/10/19 20:56 11,1-Difluoroethene ND 60.1 6.01 ug/Sample 12/10/19 09:47 12/10/19 20:56 11,2,2-trichloro-1,1-difluoroethane ND 30.1 9.62 ug/Sample 12/10/19 09:47 12/10/19 20:56 11,2,3-Trichlorobenzene ND 30.1 7.45 ug/Sample 12/10/19 09:47 12/10/19 20:56 11,2,3-Trichloropropane ND Eurofins TestAmerica, Knoxville 12/30/2019Page 25 of 706120 Client Sample Results Job ID: 140-17557-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Lab Sample ID: 140-17557-6Client Sample ID: Y-2981 R3 VEN DIV STACK MM18 IMPINGER #6 Matrix: AirDate Collected: 12/04/19 00:00 Date Received: 12/07/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) RL MDL 1,2,4-Trichlorobenzene ND 30.1 10.1 ug/Sample 12/10/19 09:47 12/10/19 20:56 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 30.1 6.25 ug/Sample 12/10/19 09:47 12/10/19 20:56 11,2,4-Trimethylbenzene ND 60.1 10.6 ug/Sample 12/10/19 09:47 12/10/19 20:56 11,2-Dibromo-3-Chloropropane ND 30.1 3.97 ug/Sample 12/10/19 09:47 12/10/19 20:56 11,2-Dibromoethane (EDB)ND 60.1 6.01 ug/Sample 12/10/19 09:47 12/10/19 20:56 11,2-dichloro-1,1-difluoroethane ND 30.1 5.29 ug/Sample 12/10/19 09:47 12/10/19 20:56 11,2-Dichlorobenzene ND 30.1 5.05 ug/Sample 12/10/19 09:47 12/10/19 20:56 11,2-Dichloroethane ND 30.1 3.01 ug/Sample 12/10/19 09:47 12/10/19 20:56 11,2-Dichloropropane ND 30.1 6.25 ug/Sample 12/10/19 09:47 12/10/19 20:56 11,3,5-Trimethylbenzene ND 30.1 5.17 ug/Sample 12/10/19 09:47 12/10/19 20:56 11,3-Dichlorobenzene ND 30.1 3.37 ug/Sample 12/10/19 09:47 12/10/19 20:56 11,3-Dichloropropane ND 30.1 6.01 ug/Sample 12/10/19 09:47 12/10/19 20:56 11,4-Dichlorobenzene ND 60.1 6.13 ug/Sample 12/10/19 09:47 12/10/19 20:56 11-Chloro-1,1-difluoroethane ND 60.1 6.01 ug/Sample 12/10/19 09:47 12/10/19 20:56 12,2-dichloro-1,1-difluoroethylmethyl ether ND 30.1 8.78 ug/Sample 12/10/19 09:47 12/10/19 20:56 12,2-Dichloropropane ND 120 19.2 ug/Sample 12/10/19 09:47 12/10/19 20:56 12-Butanone (MEK)ND 60.1 8.90 ug/Sample 12/10/19 09:47 12/10/19 20:56 12-chloro-1,1,1,4,4,4-hexafluoro-2-but ene ND 60.1 6.01 ug/Sample 12/10/19 09:47 12/10/19 20:56 12-Chloro-1,1,1-Trifluoroethane ND 30.1 5.65 ug/Sample 12/10/19 09:47 12/10/19 20:56 12-Chlorotoluene ND 120 27.7 ug/Sample 12/10/19 09:47 12/10/19 20:56 12-Hexanone ND 26.3 26.3 ug/Sample 12/10/19 09:47 12/10/19 20:56 12-MTP as HFPO 2550 E 30.1 6.25 ug/Sample 12/10/19 09:47 12/10/19 20:56 14-Chlorotoluene ND 30.1 8.06 ug/Sample 12/10/19 09:47 12/10/19 20:56 14-Isopropyltoluene ND 120 19.2 ug/Sample 12/10/19 09:47 12/10/19 20:56 14-Methyl-2-pentanone (MIBK)ND 120 70.9 ug/Sample 12/10/19 09:47 12/10/19 20:56 1AcetoneND 30.1 5.77 ug/Sample 12/10/19 09:47 12/10/19 20:56 1BenzeneND 30.1 4.21 ug/Sample 12/10/19 09:47 12/10/19 20:56 1BromobenzeneND 30.1 6.73 ug/Sample 12/10/19 09:47 12/10/19 20:56 1BromochloromethaneND 30.1 5.17 ug/Sample 12/10/19 09:47 12/10/19 20:56 1BromodichloromethaneND 30.1 9.14 ug/Sample 12/10/19 09:47 12/10/19 20:56 1BromoformND 60.1 34.9 ug/Sample 12/10/19 09:47 12/10/19 20:56 1BromomethaneND 30.1 7.45 ug/Sample 12/10/19 09:47 12/10/19 20:56 1Carbon disulfide ND 30.1 3.97 ug/Sample 12/10/19 09:47 12/10/19 20:56 1Carbon tetrachloride ND 87.9 87.9 ug/Sample 12/10/19 09:47 12/10/19 20:56 1Carbonyl Difluoride ND 30.1 4.33 ug/Sample 12/10/19 09:47 12/10/19 20:56 1ChlorobenzeneND 30.1 6.49 ug/Sample 12/10/19 09:47 12/10/19 20:56 1ChlorodibromomethaneND 60.1 13.2 ug/Sample 12/10/19 09:47 12/10/19 20:56 1ChloroethaneND 30.1 3.49 ug/Sample 12/10/19 09:47 12/10/19 20:56 1ChloroformND 60.1 25.0 ug/Sample 12/10/19 09:47 12/10/19 20:56 1ChloromethaneND 30.1 2.40 ug/Sample 12/10/19 09:47 12/10/19 20:56 1cis-1,2-Dichloroethene ND 30.1 5.17 ug/Sample 12/10/19 09:47 12/10/19 20:56 1cis-1,3-Dichloropropene ND 30.1 2.89 ug/Sample 12/10/19 09:47 12/10/19 20:56 1DibromomethaneND 60.1 10.6 ug/Sample 12/10/19 09:47 12/10/19 20:56 1DichlorodifluoromethaneND 30.1 4.93 ug/Sample 12/10/19 09:47 12/10/19 20:56 1EthylbenzeneND 30.1 30.1 ug/Sample 12/10/19 09:47 12/10/19 20:56 1Heptafluoropropyl 1,2,2,2-tetrafluoroethyl ether ND Eurofins TestAmerica, Knoxville 12/30/2019Page 26 of 706121 Client Sample Results Job ID: 140-17557-1Client: Chemours Company FC, LLC The Project/Site: VEN Stack - MM-18 Lab Sample ID: 140-17557-6Client Sample ID: Y-2981 R3 VEN DIV STACK MM18 IMPINGER #6 Matrix: AirDate Collected: 12/04/19 00:00 Date Received: 12/07/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) RL MDL Hexachlorobutadiene ND 30.1 7.94 ug/Sample 12/10/19 09:47 12/10/19 20:56 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 28.9 28.9 ug/Sample 12/10/19 09:47 12/10/19 20:56 1HFPO dimer, methyl ester as HFPO-DA ND 30.1 4.21 ug/Sample 12/10/19 09:47 12/10/19 20:56 1IsopropylbenzeneND 60.1 4.93 ug/Sample 12/10/19 09:47 12/10/19 20:56 1m,p-Xylene ND 30.1 19.2 ug/Sample 12/10/19 09:47 12/10/19 20:56 1Methylene Chloride ND 30.1 14.4 ug/Sample 12/10/19 09:47 12/10/19 20:56 1NaphthaleneND 30.1 7.70 ug/Sample 12/10/19 09:47 12/10/19 20:56 1n-Butylbenzene ND 30.1 6.49 ug/Sample 12/10/19 09:47 12/10/19 20:56 1n-Propylbenzene ND 30.1 3.13 ug/Sample 12/10/19 09:47 12/10/19 20:56 1o-Xylene ND 30.1 5.89 ug/Sample 12/10/19 09:47 12/10/19 20:56 1sec-Butylbenzene ND 30.1 6.49 ug/Sample 12/10/19 09:47 12/10/19 20:56 1StyreneND 30.1 5.29 ug/Sample 12/10/19 09:47 12/10/19 20:56 1tert-Butylbenzene ND 30.1 3.97 ug/Sample 12/10/19 09:47 12/10/19 20:56 1TetrachloroetheneND 30.1 5.53 ug/Sample 12/10/19 09:47 12/10/19 20:56 1TolueneND 30.1 3.13 ug/Sample 12/10/19 09:47 12/10/19 20:56 1trans-1,2-Dichloroethene ND 30.1 10.6 ug/Sample 12/10/19 09:47 12/10/19 20:56 1trans-1,3-Dichloropropene ND 30.1 2.16 ug/Sample 12/10/19 09:47 12/10/19 20:56 1TrichloroetheneND 60.1 5.77 ug/Sample 12/10/19 09:47 12/10/19 20:56 1TrichlorofluoromethaneND * 60.1 14.4 ug/Sample 12/10/19 09:47 12/10/19 20:56 1Vinyl chloride ND Propene, hexafluoro-408 T J N ug/Sample 1.13 116-15-4 12/10/19 09:47 12/10/19 20:56 1 Tentatively Identified Compound Dil FacAnalyzedPreparedUnit DQualifierEst. Result CAS No.RT 112/10/19 20:5612/10/19 09:47T JUnknown418 ug/Sample 1.18 1,2-Dichloroethane-d4 (Surr)116 70 -160 12/10/19 09:47 12/10/19 20:56 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery 4-Bromofluorobenzene (Surr)111 12/10/19 09:47 12/10/19 20:56 157-152 Dibromofluoromethane (Surr)104 12/10/19 09:47 12/10/19 20:56 162-134 Toluene-d8 (Surr)92 12/10/19 09:47 12/10/19 20:56 171-139 Method: 8260B - Volatile Organic Compounds (GC/MS) - DL RL MDL 2-MTP as HFPO 2350 65.7 65.7 ug/Sample 12/10/19 09:47 12/11/19 17:42 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)112 70 -160 12/10/19 09:47 12/11/19 17:42 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery 4-Bromofluorobenzene (Surr)107 12/10/19 09:47 12/11/19 17:42 157-152 Dibromofluoromethane (Surr)98 12/10/19 09:47 12/11/19 17:42 162-134 Toluene-d8 (Surr)96 12/10/19 09:47 12/11/19 17:42 171-139 Method: 9056 - Anions, Ion Chromatography RL MDL Total Fluorine 4990 J 6410 3210 ug/Sample 12/10/19 09:47 12/20/19 01:38 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 2650 1200 ug/Sample 12/10/19 09:47 12/24/19 04:42 20Hydrogen Fluoride ND General Chemistry RL MDL pH 5.0 HF SU 12/17/19 13:39 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Eurofins TestAmerica, Knoxville 12/30/2019Page 27 of 706122 Default Detection Limits Client: Chemours Company FC, LLC The Job ID: 140-17557-1 Project/Site: VEN Stack - MM-18 Method: 8260B - Volatile Organic Compounds (GC/MS) Prep: MeOH Prep 2.501,1,1,2-Tetrachloroethane ug/Sample Analyte UnitsMDLRL 0.330 5.001,1,1,3,3-Pentafluorobutane ug/Sample0.500 2.501,1,1-Trichloroethane ug/Sample0.360 5.001,1,1-Trifluoro-2,2-dichloroethane ug/Sample0.990 5.001,1,1-Trifluoroethane ug/Sample0.500 2.501,1,2,2-Tetrachloroethane ug/Sample0.480 5.001,1,2-Trichloro-1,2,2-trifluoroethane ug/Sample0.280 5.001,1,2-trichloro-1-fluoroethane ug/Sample0.500 2.501,1,2-Trichloroethane ug/Sample0.260 5.001,1-Dichloro-1-fluoroethane ug/Sample2.50 5.001,1-dichloro-2,2-difluoroethane ug/Sample0.500 5.001,1-dichloro-2,2-difluoroethene ug/Sample0.500 2.501,1-Dichloroethane ug/Sample0.300 2.501,1-Dichloroethene ug/Sample0.370 2.501,1-Dichloropropene ug/Sample0.270 50.01,1-Difluoroethene ug/Sample50.0 5.001,2,2-trichloro-1,1-difluoroethane ug/Sample0.500 2.501,2,3-Trichlorobenzene ug/Sample0.800 2.501,2,3-Trichloropropane ug/Sample0.620 2.501,2,4-Trichlorobenzene ug/Sample0.840 2.501,2,4-Trimethylbenzene ug/Sample0.520 5.001,2-Dibromo-3-Chloropropane ug/Sample0.880 2.501,2-Dibromoethane (EDB)ug/Sample0.330 5.001,2-dichloro-1,1-difluoroethane ug/Sample0.500 2.501,2-Dichlorobenzene ug/Sample0.440 2.501,2-Dichloroethane ug/Sample0.420 2.501,2-Dichloropropane ug/Sample0.250 2.501,3,5-Trimethylbenzene ug/Sample0.520 2.501,3-Dichlorobenzene ug/Sample0.430 2.501,3-Dichloropropane ug/Sample0.280 2.501,4-Dichlorobenzene ug/Sample0.500 5.001-Chloro-1,1-difluoroethane ug/Sample0.510 5.002,2-dichloro-1,1-difluoroethylmethyl ether ug/Sample0.500 2.502,2-Dichloropropane ug/Sample0.730 10.02-Butanone (MEK)ug/Sample1.60 5.002-chloro-1,1,1,4,4,4-hexafluoro-2-butene ug/Sample0.740 5.002-Chloro-1,1,1-Trifluoroethane ug/Sample0.500 2.502-Chlorotoluene ug/Sample0.470 10.02-Hexanone ug/Sample2.30 2.502-MTP as HFPO ug/Sample2.50 2.504-Chlorotoluene ug/Sample0.520 2.504-Isopropyltoluene ug/Sample0.670 10.04-Methyl-2-pentanone (MIBK)ug/Sample1.60 10.0Acetone ug/Sample5.90 2.50Benzene ug/Sample0.480 2.50Bromobenzene ug/Sample0.350 2.50Bromochloromethane ug/Sample0.560 2.50Bromodichloromethane ug/Sample0.430 2.50Bromoform ug/Sample0.760 5.00Bromomethane ug/Sample2.90 2.50Carbon disulfide ug/Sample0.620 2.50Carbon tetrachloride ug/Sample0.330 Eurofins TestAmerica, Knoxville 12/30/2019Page 28 of 706123 Default Detection Limits Client: Chemours Company FC, LLC The Job ID: 140-17557-1 Project/Site: VEN Stack - MM-18 Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Prep: MeOH Prep 10.0Carbonyl Difluoride ug/Sample Analyte UnitsMDLRL 10.0 2.50Chlorobenzene ug/Sample0.360 2.50Chlorodibromomethane ug/Sample0.540 5.00Chloroethane ug/Sample1.10 2.50Chloroform ug/Sample0.290 5.00Chloromethane ug/Sample2.08 2.50cis-1,2-Dichloroethene ug/Sample0.200 2.50cis-1,3-Dichloropropene ug/Sample0.430 2.50Dibromomethane ug/Sample0.240 5.00Dichlorodifluoromethane ug/Sample0.880 2.50Ethylbenzene ug/Sample0.410 2.50Heptafluoropropyl 1,2,2,2-tetrafluoroethyl ether ug/Sample2.50 2.50Hexachlorobutadiene ug/Sample0.660 2.50HFPO dimer, methyl ester as HFPO-DA ug/Sample2.50 2.50Isopropylbenzene ug/Sample0.350 5.00m,p-Xylene ug/Sample0.410 2.50Methylene Chloride ug/Sample1.60 2.50Naphthalene ug/Sample1.20 2.50n-Butylbenzene ug/Sample0.640 2.50n-Propylbenzene ug/Sample0.540 2.50o-Xylene ug/Sample0.260 2.50sec-Butylbenzene ug/Sample0.490 2.50Styrene ug/Sample0.540 2.50tert-Butylbenzene ug/Sample0.440 2.50Tetrachloroethene ug/Sample0.330 2.50Toluene ug/Sample0.460 2.50trans-1,2-Dichloroethene ug/Sample0.260 2.50trans-1,3-Dichloropropene ug/Sample0.880 2.50Trichloroethene ug/Sample0.180 5.00Trichlorofluoromethane ug/Sample0.480 5.00Vinyl chloride ug/Sample1.20 Method: 9056 - Anions, Ion Chromatography Prep: MeOH Prep 11.0Hydrogen Fluoride ug/Sample Analyte UnitsMDLRL 5.00 1000Total Fluorine ug/Sample500 Eurofins TestAmerica, Knoxville 12/30/2019Page 29 of 706124 ANALYTICAL REPORT Job Number: 140-17462-1 Job Description: VEN MM-18 Field QC Contract Number: LBIO-67048 For: Chemours Company FC, LLC The c/o AECOM Sabre Building, Suite 300 4051 Ogletown Road Newark, DE 19713 Attention: Michael Aucoin _____________________________________________ Approved for release. Courtney M Adkins Project Manager II 12/23/2019 3:02 PM Courtney M Adkins, Project Manager II 5815 Middlebrook Pike, Knoxville, TN, 37921 (865)291-3000 courtney.adkins@testamericainc.com 12/23/2019 This report may not be reproduced except in full, and with written approval from the laboratory. For questions please contact the Project Manager at the e-mail address or telephone number listed on this page. The test results in this report relate only to the samples as received by the laboratory and will meet all requirements of the methodology, with any exceptions noted. This report shall not be reproduced except in full, without the express written approval of the laboratory. All questions should be directed to the Eurofins TestAmerica Project Manager. This report has been electronically signed and authorized by the signatory. Electronic signature is intended to be the legally binding equivalent of a traditionally handwritten signature. Eurofins TestAmerica, Knoxville 5815 Middlebrook Pike, Knoxville, TN 37921 Tel (865) 291-3000 Fax (865) 584-4315 www.testamericainc.com 12/23/2019Page 1 of 820125 Table of Contents Cover Title Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Data Summaries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Method Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Sample Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Case Narrative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 QC Association . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 Client Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 Default Detection Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35 Surrogate Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37 QC Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39 Chronicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46 Certification Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54 Manual Integration Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56 Organic Sample Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 GC/MS VOA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69 Method 8260B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69 Method 8260B QC Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70 Method 8260B Sample Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83 Standards Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .179 Method 8260B ICAL Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .179 Method 8260B CCAL Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .281 Raw QC Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .329 Method 8260B Tune Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .329 Method 8260B Blank Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .345 Method 8260B LCS/LCSD Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .355 12/23/2019Page 2 of 820126 Table of Contents Method 8260B MS/MSD Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .368 Method 8260B Run Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .376 Method 8260B Prep Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .389 HPLC/IC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .392 Method 9056 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .392 Method 9056 QC Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .393 Method 9056 Sample Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .396 Standards Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .423 Method 9056 ICAL Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .423 Method 9056 CCAL Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .450 Raw QC Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .493 Method 9056 Blank Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .493 Method 9056 LCS/LCSD Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .519 Method 9056 Run Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .525 Method 9056 Prep Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .539 Method 9056A Total Halogens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .541 Method 9056A Total Halogens QC Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .542 Method 9056A Total Halogens Sample Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .545 Standards Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .580 Method 9056A Total Halogens ICAL Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .580 Method 9056A Total Halogens CCAL Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .605 Raw QC Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .624 Method 9056A Total Halogens Blank Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .624 Method 9056A Total Halogens LCS/LCSD Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .641 Method 9056A Total Halogens Run Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .649 Method 9056A Total Halogens Prep Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .658 12/23/2019Page 3 of 820127 Table of Contents LCMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .662 Method DV-LC-0012 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .662 Method DV-LC-0012 QC Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .663 Method DV-LC-0012 Sample Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .668 Standards Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .704 Method DV-LC-0012 ICAL Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .704 Method DV-LC-0012 CCAL Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .751 Raw QC Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .763 Method DV-LC-0012 Tune Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .763 Method DV-LC-0012 Blank Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .768 Method DV-LC-0012 LCS/LCSD Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .772 Method DV-LC-0012 Run Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .785 Method DV-LC-0012 Prep Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .788 Inorganic Sample Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 796 General Chemistry Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .796 Gen Chem Cover Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .797 Gen Chem Sample Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .798 Gen Chem QC Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .807 Gen Chem ICV/CCV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .807 Gen Chem MDL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .808 Gen Chem Analysis Run Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .809 Gen Chem Prep Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .810 Gen Chem Raw Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .811 Shipping and Receiving Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . 813 Client Chain of Custody . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .814 12/23/2019Page 4 of 820128 Definitions/Glossary Job ID: 140-17462-1Client: Chemours Company FC, LLC The Project/Site: VEN MM-18 Field QC Qualifiers GC/MS VOA Qualifier Description *LCS or LCSD is outside acceptance limits. Qualifier B Compound was found in the blank and sample. J Result is less than the RL but greater than or equal to the MDL and the concentration is an approximate value. GC/MS VOA TICs Qualifier Description J Indicates an Estimated Value for TICs Qualifier N Presumptive evidence of material. T Result is a tentatively identified compound (TIC) and an estimated value. HPLC/IC Qualifier Description J Result is less than the RL but greater than or equal to the MDL and the concentration is an approximate value. Qualifier LCMS Qualifier Description J Result is less than the RL but greater than or equal to the MDL and the concentration is an approximate value. Qualifier General Chemistry Qualifier Description HF Field parameter with a holding time of 15 minutes. Test performed by laboratory at client's request. Qualifier Glossary These commonly used abbreviations may or may not be present in this report. ¤Listed under the "D" column to designate that the result is reported on a dry weight basis Abbreviation %R Percent Recovery CFL Contains Free Liquid CNF Contains No Free Liquid DER Duplicate Error Ratio (normalized absolute difference) Dil Fac Dilution Factor DL Detection Limit (DoD/DOE) DL, RA, RE, IN Indicates a Dilution, Re-analysis, Re-extraction, or additional Initial metals/anion analysis of the sample DLC Decision Level Concentration (Radiochemistry) EDL Estimated Detection Limit (Dioxin) LOD Limit of Detection (DoD/DOE) LOQ Limit of Quantitation (DoD/DOE) MDA Minimum Detectable Activity (Radiochemistry) MDC Minimum Detectable Concentration (Radiochemistry) MDL Method Detection Limit ML Minimum Level (Dioxin) NC Not Calculated ND Not Detected at the reporting limit (or MDL or EDL if shown) PQL Practical Quantitation Limit QC Quality Control RER Relative Error Ratio (Radiochemistry) RL Reporting Limit or Requested Limit (Radiochemistry) RPD Relative Percent Difference, a measure of the relative difference between two points TEF Toxicity Equivalent Factor (Dioxin) TEQ Toxicity Equivalent Quotient (Dioxin) Eurofins TestAmerica, Knoxville 12/23/2019Page 5 of 820129 Method Summary Job ID: 140-17462-1Client: Chemours Company FC, LLC The Project/Site: VEN MM-18 Field QC Method Method Description LaboratoryProtocol SW8468260BVolatile Organic Compounds (GC/MS)TAL KNX SW8469056Anions, Ion Chromatography TAL KNX SW8468321APFOA and PFOS TAL DEN SW8469041ApH TAL KNX SW8465050Bomb Preparation Method for Solid Waste TAL KNX NoneMeOH Prep Methanol Impinger Preparation TAL KNX TAL SOPNoneLeaching Procedure TAL DEN Protocol References: None = None SW846 = "Test Methods For Evaluating Solid Waste, Physical/Chemical Methods", Third Edition, November 1986 And Its Updates. TAL SOP = TestAmerica Laboratories, Standard Operating Procedure Laboratory References: TAL DEN = Eurofins TestAmerica, Denver, 4955 Yarrow Street, Arvada, CO 80002, TEL (303)736-0100 TAL KNX = Eurofins TestAmerica, Knoxville, 5815 Middlebrook Pike, Knoxville, TN 37921, TEL (865)291-3000 Eurofins TestAmerica, Knoxville 12/23/2019Page 6 of 820130 Sample Summary Job ID: 140-17462-1Client: Chemours Company FC, LLC The Project/Site: VEN MM-18 Field QC Lab Sample ID Client Sample ID ReceivedCollectedMatrix Asset ID 140-17462-1 A-5780 QC VEN DIV STACK MM18 IMPINGER #1 BT Air 11/22/19 00:00 11/25/19 08:00 140-17462-2 A-5781 QC VEN DIV STACK MM18 IMPINGER #2 BT Air 11/22/19 00:00 11/25/19 08:00 140-17462-3 A-5782 QC VEN DIV STACK MM18 IMPINGER #3 BT Air 11/22/19 00:00 11/25/19 08:00 140-17462-4 A-5783 QC VEN DIV STACK MM18 IMPINGER #4 BT Air 11/22/19 00:00 11/25/19 08:00 140-17462-5 A-5784 QC VEN DIV STACK MM18 IMPINGER #5 BT Air 11/22/19 00:00 11/25/19 08:00 140-17462-6 A-5785 QC VEN DIV STACK MM18 IMPINGER #6 BT Air 11/22/19 00:00 11/25/19 08:00 140-17462-7 A-5786 QC MEOH RB Air 11/22/19 00:00 11/25/19 08:00 140-17462-8 A-5787 QC MEOH TB Air 11/22/19 00:00 11/25/19 08:00 140-17462-9 A-5788 QC MEOH PB Air 11/22/19 00:00 11/25/19 08:00 Eurofins TestAmerica, Knoxville 12/23/2019Page 7 of 820131 Job Narrative 140-17462-1 Sample Receipt The samples were received on November 25, 2019 at 8:00 AM in good condition and properly preserved. The temperature of the cooler at receipt was 3.3º C. GC/MS VOA Impinger Sample Preparation and Analysis: Impinger samples were analyzed for the volatile organic target analytes by purge and trap GCMS using Eurofins TestAmerica Knoxville standard operating procedure KNOX-MS-0015, based on the following method: · SW-846 8260B, “Volatile Organic Compounds by Gas Chromatography/ Mass Spectrometry (GC/MS)” Each sample is prepared by adding a known amount of sample to the purge water in a purge and trap vessel and spiking with internal standards, surrogates, and matrix spike analytes (as needed). Volatile compounds are introduced into the gas chromatograph by the purge and trap method. The components are separated using the chromatograph and detected using a mass spectrometer, which provides both qualitative and quantitative information. Impinger sample results were calculated using the following equation: Concentration, μg/sample = (C × DF × W × Vt) / (Va) Where: C = On-column concentration, μg/L DF = Dilution factor W = Volume of water purged, L Vt = Methanol extract final volume, μL Va = Volume of extract analyzed, µL Method 8260B: The following analyte(s) recovered outside control limits, but within marginal exceedance limits, for the LCS associated with batch 140-35880: Trichlorofluoromethane. This is not indicative of a systematic control problem because these were random marginal exceedances. Qualified results have been reported. No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page. LCMS No analytical or quality issues were noted, other than those described in the Definitions/Glossary page. General Chemistry Total Chlorine: The samples were prepared for total chlorine using SOP number KNOX-WC-0016 (based on ASTM Method E442 and SW-846 Method 5050). The sample is oxidized by combustion in an oxygen flask at atmospheric pressure or a bomb containing oxygen under pressure. The liberated halogen compounds are absorbed primarily as halides in a sodium carbonate/sodium bicarbonate buffer solution. The combustion products are collected by repeated rinsing of the combustion apparatus, and analyzed by ion chromatography in accordance with SOP KNOX- WC-0005 (based on SW-846 Method 9056). The results are calculated using the following equation: C = [(Ccom × Vcom) / W] × 1000 g/Kg Where: C = Concentration of analyte in the sample, mg/Kg Ccom = Concentration of analyte in the combustate, mg/L Vcom = Total volume of combustate, L W = Weight of sample combusted, g Anions in Impinger Solutions: Anions are is determined in accordance to SOP KNOX-WC-0005 (based on methods 300.0A and 9056). The samples were diluted a minimum of 1/20 in ion chromatography solvent buffer solution to reduce the methanol concentration before injection. Buffer concentrate was added until the pH was 10. Samples are diluted with ion chromatography eluate solution to bring the concentrations within the calibration range when necessary. Higher dilutions are applied as necessary. An aliquot of prepared sample is introduced into the ion chromatograph. Anions are identified based on their retention times as compared to those of known standards. Quantification is accomplished by measuring the peak response and comparing it to a calibration curve generated from known standards. 12/23/2019Page 8 of 820132 The pH of all samples were tested with pH paper. QC consisted of initial CCV and LCS which also serve as initial calibration, duplicate analysis for every 10 samples, and closing CCV. A certified thermometer was used to check the ambient temperature. No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page. Organic Prep No analytical or quality issues were noted, other than those described in the Definitions/Glossary page. No analytical or quality issues were noted, other than those described in the Definitions/Glossary page. 12/23/2019Page 9 of 820133 QC Association Summary Job ID: 140-17462-1Client: Chemours Company FC, LLC The Project/Site: VEN MM-18 Field QC GC/MS VOA Prep Batch: 35705 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air MeOH Prep140-17462-1 A-5780 QC VEN DIV STACK MM18 IMPINGER #1 BTTotal/NA Air MeOH Prep140-17462-2 A-5781 QC VEN DIV STACK MM18 IMPINGER #2 BTTotal/NA Air MeOH Prep140-17462-3 A-5782 QC VEN DIV STACK MM18 IMPINGER #3 BTTotal/NA Air MeOH Prep140-17462-4 A-5783 QC VEN DIV STACK MM18 IMPINGER #4 BTTotal/NA Air MeOH Prep140-17462-5 A-5784 QC VEN DIV STACK MM18 IMPINGER #5 BTTotal/NA Air MeOH Prep140-17462-6 A-5785 QC VEN DIV STACK MM18 IMPINGER #6 BTTotal/NA Air MeOH Prep140-17462-7 A-5786 QC MEOH RB Total/NA Air MeOH Prep140-17462-8 A-5787 QC MEOH TB Total/NA Air MeOH Prep140-17462-9 A-5788 QC MEOH PB Total/NA Air MeOH PrepMB 140-35705/2-A Method Blank Total/NA Air MeOH PrepLCS 140-35705/1-A Lab Control Sample Total/NA Air MeOH Prep140-17462-2 MS A-5781 QC VEN DIV STACK MM18 IMPINGER #2 BTTotal/NA Air MeOH Prep140-17462-2 MSD A-5781 QC VEN DIV STACK MM18 IMPINGER #2 BTTotal/NA Analysis Batch: 35880 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air 8260B 35705140-17462-1 A-5780 QC VEN DIV STACK MM18 IMPINGER #1 BTTotal/NA Air 8260B 35705140-17462-2 A-5781 QC VEN DIV STACK MM18 IMPINGER #2 BTTotal/NA Air 8260B 35705140-17462-3 A-5782 QC VEN DIV STACK MM18 IMPINGER #3 BTTotal/NA Air 8260B 35705140-17462-4 A-5783 QC VEN DIV STACK MM18 IMPINGER #4 BTTotal/NA Air 8260B 35705140-17462-5 A-5784 QC VEN DIV STACK MM18 IMPINGER #5 BTTotal/NA Air 8260B 35705140-17462-6 A-5785 QC VEN DIV STACK MM18 IMPINGER #6 BTTotal/NA Air 8260B 35705140-17462-7 A-5786 QC MEOH RB Total/NA Air 8260B 35705140-17462-8 A-5787 QC MEOH TB Total/NA Air 8260B 35705140-17462-9 A-5788 QC MEOH PB Total/NA Air 8260B 35705MB 140-35705/2-A Method Blank Total/NA Air 8260B 35705LCS 140-35705/1-A Lab Control Sample Total/NA Air 8260B 35705LCS 140-35705/1-A Lab Control Sample Total/NA Air 8260B 35705140-17462-2 MS A-5781 QC VEN DIV STACK MM18 IMPINGER #2 BTTotal/NA Air 8260B 35705140-17462-2 MSD A-5781 QC VEN DIV STACK MM18 IMPINGER #2 BTTotal/NA HPLC/IC Prep Batch: 35705 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air MeOH Prep140-17462-1 A-5780 QC VEN DIV STACK MM18 IMPINGER #1 BTTotal/NA Air MeOH Prep140-17462-2 A-5781 QC VEN DIV STACK MM18 IMPINGER #2 BTTotal/NA Air MeOH Prep140-17462-3 A-5782 QC VEN DIV STACK MM18 IMPINGER #3 BTTotal/NA Air MeOH Prep140-17462-4 A-5783 QC VEN DIV STACK MM18 IMPINGER #4 BTTotal/NA Air MeOH Prep140-17462-5 A-5784 QC VEN DIV STACK MM18 IMPINGER #5 BTTotal/NA Air MeOH Prep140-17462-6 A-5785 QC VEN DIV STACK MM18 IMPINGER #6 BTTotal/NA Air MeOH Prep140-17462-7 A-5786 QC MEOH RB Total/NA Air MeOH Prep140-17462-8 A-5787 QC MEOH TB Total/NA Air MeOH Prep140-17462-9 A-5788 QC MEOH PB Total/NA Air MeOH PrepMB 140-35705/14-A Method Blank Total/NA Air MeOH PrepMB 140-35705/14-B Method Blank Total/NA Air MeOH PrepLCS 140-35705/15-A Lab Control Sample Total/NA Air MeOH PrepLCS 140-35705/15-B Lab Control Sample Total/NA Air MeOH PrepLCSD 140-35705/16-A Lab Control Sample Dup Total/NA Air MeOH PrepLCSD 140-35705/16-B Lab Control Sample Dup Total/NA Eurofins TestAmerica, Knoxville 12/23/2019Page 10 of 820134 QC Association Summary Job ID: 140-17462-1Client: Chemours Company FC, LLC The Project/Site: VEN MM-18 Field QC HPLC/IC Prep Batch: 35762 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air 5050 35705140-17462-1 A-5780 QC VEN DIV STACK MM18 IMPINGER #1 BTTotal/NA Air 5050 35705140-17462-2 A-5781 QC VEN DIV STACK MM18 IMPINGER #2 BTTotal/NA Air 5050 35705140-17462-3 A-5782 QC VEN DIV STACK MM18 IMPINGER #3 BTTotal/NA Air 5050 35705140-17462-4 A-5783 QC VEN DIV STACK MM18 IMPINGER #4 BTTotal/NA Air 5050 35705140-17462-5 A-5784 QC VEN DIV STACK MM18 IMPINGER #5 BTTotal/NA Air 5050 35705140-17462-6 A-5785 QC VEN DIV STACK MM18 IMPINGER #6 BTTotal/NA Air 5050 35705140-17462-7 A-5786 QC MEOH RB Total/NA Air 5050 35705140-17462-8 A-5787 QC MEOH TB Total/NA Air 5050 35705140-17462-9 A-5788 QC MEOH PB Total/NA Air 5050 35705MB 140-35705/14-B Method Blank Total/NA Air 5050 35705LCS 140-35705/15-B Lab Control Sample Total/NA Air 5050 35705LCSD 140-35705/16-B Lab Control Sample Dup Total/NA Analysis Batch: 36121 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air 9056 35762140-17462-1 A-5780 QC VEN DIV STACK MM18 IMPINGER #1 BTTotal/NA Air 9056 35762140-17462-2 A-5781 QC VEN DIV STACK MM18 IMPINGER #2 BTTotal/NA Air 9056 35762140-17462-3 A-5782 QC VEN DIV STACK MM18 IMPINGER #3 BTTotal/NA Air 9056 35762140-17462-4 A-5783 QC VEN DIV STACK MM18 IMPINGER #4 BTTotal/NA Air 9056 35762140-17462-5 A-5784 QC VEN DIV STACK MM18 IMPINGER #5 BTTotal/NA Air 9056 35762140-17462-6 A-5785 QC VEN DIV STACK MM18 IMPINGER #6 BTTotal/NA Air 9056 35762140-17462-7 A-5786 QC MEOH RB Total/NA Air 9056 35762140-17462-8 A-5787 QC MEOH TB Total/NA Air 9056 35762140-17462-9 A-5788 QC MEOH PB Total/NA Air 9056 35762MB 140-35705/14-B Method Blank Total/NA Air 9056 35762LCS 140-35705/15-B Lab Control Sample Total/NA Air 9056 35762LCSD 140-35705/16-B Lab Control Sample Dup Total/NA Analysis Batch: 36210 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air 9056 35705140-17462-1 A-5780 QC VEN DIV STACK MM18 IMPINGER #1 BTTotal/NA Air 9056 35705140-17462-2 A-5781 QC VEN DIV STACK MM18 IMPINGER #2 BTTotal/NA Air 9056 35705140-17462-3 A-5782 QC VEN DIV STACK MM18 IMPINGER #3 BTTotal/NA Air 9056 35705140-17462-4 A-5783 QC VEN DIV STACK MM18 IMPINGER #4 BTTotal/NA Air 9056 35705140-17462-5 A-5784 QC VEN DIV STACK MM18 IMPINGER #5 BTTotal/NA Air 9056 35705140-17462-6 A-5785 QC VEN DIV STACK MM18 IMPINGER #6 BTTotal/NA Air 9056 35705140-17462-7 A-5786 QC MEOH RB Total/NA Air 9056 35705140-17462-8 A-5787 QC MEOH TB Total/NA Air 9056 35705140-17462-9 A-5788 QC MEOH PB Total/NA Air 9056 35705MB 140-35705/14-A Method Blank Total/NA Air 9056 35705LCS 140-35705/15-A Lab Control Sample Total/NA Air 9056 35705LCSD 140-35705/16-A Lab Control Sample Dup Total/NA LCMS Analysis Batch: 464589 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air 8321ADLCK 280-464589/13 Lab Control Sample Total/NA Eurofins TestAmerica, Knoxville 12/23/2019Page 11 of 820135 QC Association Summary Job ID: 140-17462-1Client: Chemours Company FC, LLC The Project/Site: VEN MM-18 Field QC LCMS Prep Batch: 479505 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air None140-17462-1 A-5780 QC VEN DIV STACK MM18 IMPINGER #1 BTTotal/NA Air None140-17462-2 A-5781 QC VEN DIV STACK MM18 IMPINGER #2 BTTotal/NA Air None140-17462-3 A-5782 QC VEN DIV STACK MM18 IMPINGER #3 BTTotal/NA Air None140-17462-4 A-5783 QC VEN DIV STACK MM18 IMPINGER #4 BTTotal/NA Air None140-17462-5 A-5784 QC VEN DIV STACK MM18 IMPINGER #5 BTTotal/NA Air None140-17462-6 A-5785 QC VEN DIV STACK MM18 IMPINGER #6 BTTotal/NA Air None140-17462-7 A-5786 QC MEOH RB Total/NA Air None140-17462-8 A-5787 QC MEOH TB Total/NA Air None140-17462-9 A-5788 QC MEOH PB Total/NA Air NoneMB 280-479505/1-A Method Blank Total/NA Air NoneLCS 280-479505/2-A Lab Control Sample Total/NA Air NoneLCSD 280-479505/3-A Lab Control Sample Dup Total/NA Analysis Batch: 479931 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air 8321A 479505140-17462-1 A-5780 QC VEN DIV STACK MM18 IMPINGER #1 BTTotal/NA Air 8321A 479505140-17462-2 A-5781 QC VEN DIV STACK MM18 IMPINGER #2 BTTotal/NA Air 8321A 479505140-17462-3 A-5782 QC VEN DIV STACK MM18 IMPINGER #3 BTTotal/NA Air 8321A 479505140-17462-4 A-5783 QC VEN DIV STACK MM18 IMPINGER #4 BTTotal/NA Air 8321A 479505140-17462-5 A-5784 QC VEN DIV STACK MM18 IMPINGER #5 BTTotal/NA Air 8321A 479505140-17462-6 A-5785 QC VEN DIV STACK MM18 IMPINGER #6 BTTotal/NA Air 8321A 479505140-17462-7 A-5786 QC MEOH RB Total/NA Air 8321A 479505140-17462-8 A-5787 QC MEOH TB Total/NA Air 8321A 479505140-17462-9 A-5788 QC MEOH PB Total/NA Air 8321A 479505MB 280-479505/1-A Method Blank Total/NA Air 8321A 479505LCS 280-479505/2-A Lab Control Sample Total/NA Air 8321A 479505LCSD 280-479505/3-A Lab Control Sample Dup Total/NA General Chemistry Analysis Batch: 36086 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Air 9041A140-17462-1 A-5780 QC VEN DIV STACK MM18 IMPINGER #1 BTTotal/NA Air 9041A140-17462-2 A-5781 QC VEN DIV STACK MM18 IMPINGER #2 BTTotal/NA Air 9041A140-17462-3 A-5782 QC VEN DIV STACK MM18 IMPINGER #3 BTTotal/NA Air 9041A140-17462-4 A-5783 QC VEN DIV STACK MM18 IMPINGER #4 BTTotal/NA Air 9041A140-17462-5 A-5784 QC VEN DIV STACK MM18 IMPINGER #5 BTTotal/NA Air 9041A140-17462-6 A-5785 QC VEN DIV STACK MM18 IMPINGER #6 BTTotal/NA Air 9041A140-17462-7 A-5786 QC MEOH RB Total/NA Air 9041A140-17462-8 A-5787 QC MEOH TB Total/NA Air 9041A140-17462-9 A-5788 QC MEOH PB Total/NA Air 9041ALCS 140-36086/2 Lab Control Sample Total/NA Eurofins TestAmerica, Knoxville 12/23/2019Page 12 of 820136 Client Sample Results Job ID: 140-17462-1Client: Chemours Company FC, LLC The Project/Site: VEN MM-18 Field QC Lab Sample ID: 140-17462-1Client Sample ID: A-5780 QC VEN DIV STACK MM18 IMPINGER #1 BT Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) RL MDL 1,1,1,2-Tetrachloroethane ND 28.7 3.79 ug/Sample 11/29/19 10:45 12/06/19 15:17 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 57.4 5.74 ug/Sample 11/29/19 10:45 12/06/19 15:17 11,1,1,3,3-Pentafluorobutane ND 28.7 4.13 ug/Sample 11/29/19 10:45 12/06/19 15:17 11,1,1-Trichloroethane ND 57.4 11.4 ug/Sample 11/29/19 10:45 12/06/19 15:17 11,1,1-Trifluoro-2,2-dichloroethane ND 57.4 5.74 ug/Sample 11/29/19 10:45 12/06/19 15:17 11,1,1-Trifluoroethane ND 28.7 5.51 ug/Sample 11/29/19 10:45 12/06/19 15:17 11,1,2,2-Tetrachloroethane ND 57.4 3.21 ug/Sample 11/29/19 10:45 12/06/19 15:17 11,1,2-Trichloro-1,2,2-trifluoroethane ND 57.4 5.74 ug/Sample 11/29/19 10:45 12/06/19 15:17 11,1,2-trichloro-1-fluoroethane ND 28.7 2.98 ug/Sample 11/29/19 10:45 12/06/19 15:17 11,1,2-Trichloroethane ND 57.4 28.7 ug/Sample 11/29/19 10:45 12/06/19 15:17 11,1-Dichloro-1-fluoroethane ND 57.4 5.74 ug/Sample 11/29/19 10:45 12/06/19 15:17 11,1-dichloro-2,2-difluoroethane ND 57.4 5.74 ug/Sample 11/29/19 10:45 12/06/19 15:17 11,1-dichloro-2,2-difluoroethene ND 28.7 3.44 ug/Sample 11/29/19 10:45 12/06/19 15:17 11,1-Dichloroethane ND 28.7 4.25 ug/Sample 11/29/19 10:45 12/06/19 15:17 11,1-Dichloroethene ND 28.7 3.10 ug/Sample 11/29/19 10:45 12/06/19 15:17 11,1-Dichloropropene ND 574 574 ug/Sample 11/29/19 10:45 12/06/19 15:17 11,1-Difluoroethene ND 57.4 5.74 ug/Sample 11/29/19 10:45 12/06/19 15:17 11,2,2-trichloro-1,1-difluoroethane ND 28.7 9.18 ug/Sample 11/29/19 10:45 12/06/19 15:17 11,2,3-Trichlorobenzene ND 28.7 7.12 ug/Sample 11/29/19 10:45 12/06/19 15:17 11,2,3-Trichloropropane ND 28.7 9.64 ug/Sample 11/29/19 10:45 12/06/19 15:17 11,2,4-Trichlorobenzene ND 28.7 5.97 ug/Sample 11/29/19 10:45 12/06/19 15:17 11,2,4-Trimethylbenzene ND 57.4 10.1 ug/Sample 11/29/19 10:45 12/06/19 15:17 11,2-Dibromo-3-Chloropropane ND 28.7 3.79 ug/Sample 11/29/19 10:45 12/06/19 15:17 11,2-Dibromoethane (EDB)ND 57.4 5.74 ug/Sample 11/29/19 10:45 12/06/19 15:17 11,2-dichloro-1,1-difluoroethane ND 28.7 5.05 ug/Sample 11/29/19 10:45 12/06/19 15:17 11,2-Dichlorobenzene ND 28.7 4.82 ug/Sample 11/29/19 10:45 12/06/19 15:17 11,2-Dichloroethane ND 28.7 2.87 ug/Sample 11/29/19 10:45 12/06/19 15:17 11,2-Dichloropropane ND 28.7 5.97 ug/Sample 11/29/19 10:45 12/06/19 15:17 11,3,5-Trimethylbenzene ND 28.7 4.94 ug/Sample 11/29/19 10:45 12/06/19 15:17 11,3-Dichlorobenzene ND 28.7 3.21 ug/Sample 11/29/19 10:45 12/06/19 15:17 11,3-Dichloropropane ND 28.7 5.74 ug/Sample 11/29/19 10:45 12/06/19 15:17 11,4-Dichlorobenzene ND 57.4 5.85 ug/Sample 11/29/19 10:45 12/06/19 15:17 11-Chloro-1,1-difluoroethane ND 57.4 5.74 ug/Sample 11/29/19 10:45 12/06/19 15:17 12,2-dichloro-1,1-difluoroethylmethyl ether ND 28.7 8.38 ug/Sample 11/29/19 10:45 12/06/19 15:17 12,2-Dichloropropane ND 115 18.4 ug/Sample 11/29/19 10:45 12/06/19 15:17 12-Butanone (MEK)ND 57.4 8.49 ug/Sample 11/29/19 10:45 12/06/19 15:17 12-chloro-1,1,1,4,4,4-hexafluoro-2-but ene ND 57.4 5.74 ug/Sample 11/29/19 10:45 12/06/19 15:17 12-Chloro-1,1,1-Trifluoroethane ND 28.7 5.40 ug/Sample 11/29/19 10:45 12/06/19 15:17 12-Chlorotoluene ND 115 26.4 ug/Sample 11/29/19 10:45 12/06/19 15:17 12-Hexanone ND 25.1 25.1 ug/Sample 11/29/19 10:45 12/06/19 15:17 12-MTP as HFPO ND 28.7 5.97 ug/Sample 11/29/19 10:45 12/06/19 15:17 14-Chlorotoluene ND 28.7 7.69 ug/Sample 11/29/19 10:45 12/06/19 15:17 14-Isopropyltoluene ND 115 18.4 ug/Sample 11/29/19 10:45 12/06/19 15:17 14-Methyl-2-pentanone (MIBK)ND 115 67.7 ug/Sample 11/29/19 10:45 12/06/19 15:17 1AcetoneND 28.7 5.51 ug/Sample 11/29/19 10:45 12/06/19 15:17 1BenzeneND 28.7 4.02 ug/Sample 11/29/19 10:45 12/06/19 15:17 1BromobenzeneND Eurofins TestAmerica, Knoxville 12/23/2019Page 13 of 820137 Client Sample Results Job ID: 140-17462-1Client: Chemours Company FC, LLC The Project/Site: VEN MM-18 Field QC Lab Sample ID: 140-17462-1Client Sample ID: A-5780 QC VEN DIV STACK MM18 IMPINGER #1 BT Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) RL MDL Bromochloromethane ND 28.7 6.43 ug/Sample 11/29/19 10:45 12/06/19 15:17 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 28.7 4.94 ug/Sample 11/29/19 10:45 12/06/19 15:17 1BromodichloromethaneND 28.7 8.72 ug/Sample 11/29/19 10:45 12/06/19 15:17 1BromoformND 57.4 33.3 ug/Sample 11/29/19 10:45 12/06/19 15:17 1BromomethaneND 28.7 7.12 ug/Sample 11/29/19 10:45 12/06/19 15:17 1Carbon disulfide ND 28.7 3.79 ug/Sample 11/29/19 10:45 12/06/19 15:17 1Carbon tetrachloride ND 84.3 84.3 ug/Sample 11/29/19 10:45 12/06/19 15:17 1Carbonyl Difluoride ND 28.7 4.13 ug/Sample 11/29/19 10:45 12/06/19 15:17 1ChlorobenzeneND 28.7 6.20 ug/Sample 11/29/19 10:45 12/06/19 15:17 1ChlorodibromomethaneND 57.4 12.6 ug/Sample 11/29/19 10:45 12/06/19 15:17 1ChloroethaneND 28.7 3.33 ug/Sample 11/29/19 10:45 12/06/19 15:17 1ChloroformND 57.4 23.9 ug/Sample 11/29/19 10:45 12/06/19 15:17 1ChloromethaneND 28.7 2.30 ug/Sample 11/29/19 10:45 12/06/19 15:17 1cis-1,2-Dichloroethene ND 28.7 4.94 ug/Sample 11/29/19 10:45 12/06/19 15:17 1cis-1,3-Dichloropropene ND 28.7 2.75 ug/Sample 11/29/19 10:45 12/06/19 15:17 1DibromomethaneND 57.4 10.1 ug/Sample 11/29/19 10:45 12/06/19 15:17 1DichlorodifluoromethaneND 28.7 4.71 ug/Sample 11/29/19 10:45 12/06/19 15:17 1EthylbenzeneND 28.7 28.7 ug/Sample 11/29/19 10:45 12/06/19 15:17 1Heptafluoropropyl 1,2,2,2-tetrafluoroethyl ether ND 28.7 7.58 ug/Sample 11/29/19 10:45 12/06/19 15:17 1HexachlorobutadieneND 27.5 27.5 ug/Sample 11/29/19 10:45 12/06/19 15:17 1HFPO dimer, methyl ester as HFPO-DA ND 28.7 4.02 ug/Sample 11/29/19 10:45 12/06/19 15:17 1IsopropylbenzeneND 57.4 4.71 ug/Sample 11/29/19 10:45 12/06/19 15:17 1m,p-Xylene ND 28.7 18.4 ug/Sample 11/29/19 10:45 12/06/19 15:17 1Methylene Chloride ND 28.7 13.8 ug/Sample 11/29/19 10:45 12/06/19 15:17 1NaphthaleneND 28.7 7.35 ug/Sample 11/29/19 10:45 12/06/19 15:17 1n-Butylbenzene ND 28.7 6.20 ug/Sample 11/29/19 10:45 12/06/19 15:17 1n-Propylbenzene ND 28.7 2.98 ug/Sample 11/29/19 10:45 12/06/19 15:17 1o-Xylene ND 28.7 5.62 ug/Sample 11/29/19 10:45 12/06/19 15:17 1sec-Butylbenzene ND 28.7 6.20 ug/Sample 11/29/19 10:45 12/06/19 15:17 1StyreneND 28.7 5.05 ug/Sample 11/29/19 10:45 12/06/19 15:17 1tert-Butylbenzene ND 28.7 3.79 ug/Sample 11/29/19 10:45 12/06/19 15:17 1TetrachloroetheneND 28.7 5.28 ug/Sample 11/29/19 10:45 12/06/19 15:17 1TolueneND 28.7 2.98 ug/Sample 11/29/19 10:45 12/06/19 15:17 1trans-1,2-Dichloroethene ND 28.7 10.1 ug/Sample 11/29/19 10:45 12/06/19 15:17 1trans-1,3-Dichloropropene ND 28.7 2.07 ug/Sample 11/29/19 10:45 12/06/19 15:17 1TrichloroetheneND 57.4 5.51 ug/Sample 11/29/19 10:45 12/06/19 15:17 1TrichlorofluoromethaneND * 57.4 13.8 ug/Sample 11/29/19 10:45 12/06/19 15:17 1Vinyl chloride ND Tentatively Identified Compound None ug/Sample 11/29/19 10:45 12/06/19 15:17 1 Tentatively Identified Compound Dil FacAnalyzedPreparedUnit DQualifierEst. Result CAS No.RT 1,2-Dichloroethane-d4 (Surr)117 70 -160 11/29/19 10:45 12/06/19 15:17 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery 4-Bromofluorobenzene (Surr)111 11/29/19 10:45 12/06/19 15:17 157-152 Dibromofluoromethane (Surr)104 11/29/19 10:45 12/06/19 15:17 162-134 Toluene-d8 (Surr)97 11/29/19 10:45 12/06/19 15:17 171-139 Eurofins TestAmerica, Knoxville 12/23/2019Page 14 of 820138 Client Sample Results Job ID: 140-17462-1Client: Chemours Company FC, LLC The Project/Site: VEN MM-18 Field QC Lab Sample ID: 140-17462-1Client Sample ID: A-5780 QC VEN DIV STACK MM18 IMPINGER #1 BT Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 9056 - Anions, Ion Chromatography RL MDL Total Fluorine 11800 6120 3060 ug/Sample 11/29/19 10:45 12/13/19 21:53 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 2530 1150 ug/Sample 11/29/19 10:45 12/18/19 13:19 20Hydrogen Fluoride ND Method: 8321A - PFOA and PFOS RL MDL HFPO-DA ND 0.0250 0.00500 ug/Sample 12/04/19 10:05 12/08/19 10:37 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 13C3 HFPO-DA 130 50 -200 12/04/19 10:05 12/08/19 10:37 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery General Chemistry RL MDL pH 4.00 HF SU 12/13/19 15:01 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Lab Sample ID: 140-17462-2Client Sample ID: A-5781 QC VEN DIV STACK MM18 IMPINGER #2 BT Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) RL MDL 1,1,1,2-Tetrachloroethane ND 29.9 3.94 ug/Sample 11/29/19 10:45 12/06/19 15:42 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 59.8 5.98 ug/Sample 11/29/19 10:45 12/06/19 15:42 11,1,1,3,3-Pentafluorobutane ND 29.9 4.30 ug/Sample 11/29/19 10:45 12/06/19 15:42 11,1,1-Trichloroethane ND 59.8 11.8 ug/Sample 11/29/19 10:45 12/06/19 15:42 11,1,1-Trifluoro-2,2-dichloroethane ND 59.8 5.98 ug/Sample 11/29/19 10:45 12/06/19 15:42 11,1,1-Trifluoroethane ND 29.9 5.74 ug/Sample 11/29/19 10:45 12/06/19 15:42 11,1,2,2-Tetrachloroethane ND 59.8 3.35 ug/Sample 11/29/19 10:45 12/06/19 15:42 11,1,2-Trichloro-1,2,2-trifluoroethane ND 59.8 5.98 ug/Sample 11/29/19 10:45 12/06/19 15:42 11,1,2-trichloro-1-fluoroethane ND 29.9 3.11 ug/Sample 11/29/19 10:45 12/06/19 15:42 11,1,2-Trichloroethane ND 59.8 29.9 ug/Sample 11/29/19 10:45 12/06/19 15:42 11,1-Dichloro-1-fluoroethane ND 59.8 5.98 ug/Sample 11/29/19 10:45 12/06/19 15:42 11,1-dichloro-2,2-difluoroethane ND 59.8 5.98 ug/Sample 11/29/19 10:45 12/06/19 15:42 11,1-dichloro-2,2-difluoroethene ND 29.9 3.59 ug/Sample 11/29/19 10:45 12/06/19 15:42 11,1-Dichloroethane ND 29.9 4.42 ug/Sample 11/29/19 10:45 12/06/19 15:42 11,1-Dichloroethene ND 29.9 3.23 ug/Sample 11/29/19 10:45 12/06/19 15:42 11,1-Dichloropropene ND 598 598 ug/Sample 11/29/19 10:45 12/06/19 15:42 11,1-Difluoroethene ND 59.8 5.98 ug/Sample 11/29/19 10:45 12/06/19 15:42 11,2,2-trichloro-1,1-difluoroethane ND 29.9 9.56 ug/Sample 11/29/19 10:45 12/06/19 15:42 11,2,3-Trichlorobenzene ND 29.9 7.41 ug/Sample 11/29/19 10:45 12/06/19 15:42 11,2,3-Trichloropropane ND 29.9 10.0 ug/Sample 11/29/19 10:45 12/06/19 15:42 11,2,4-Trichlorobenzene ND 29.9 6.21 ug/Sample 11/29/19 10:45 12/06/19 15:42 11,2,4-Trimethylbenzene ND 59.8 10.5 ug/Sample 11/29/19 10:45 12/06/19 15:42 11,2-Dibromo-3-Chloropropane ND 29.9 3.94 ug/Sample 11/29/19 10:45 12/06/19 15:42 11,2-Dibromoethane (EDB)ND 59.8 5.98 ug/Sample 11/29/19 10:45 12/06/19 15:42 11,2-dichloro-1,1-difluoroethane ND 29.9 5.26 ug/Sample 11/29/19 10:45 12/06/19 15:42 11,2-Dichlorobenzene ND 29.9 5.02 ug/Sample 11/29/19 10:45 12/06/19 15:42 11,2-Dichloroethane ND Eurofins TestAmerica, Knoxville 12/23/2019Page 15 of 820139 Client Sample Results Job ID: 140-17462-1Client: Chemours Company FC, LLC The Project/Site: VEN MM-18 Field QC Lab Sample ID: 140-17462-2Client Sample ID: A-5781 QC VEN DIV STACK MM18 IMPINGER #2 BT Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) RL MDL 1,2-Dichloropropane ND 29.9 2.99 ug/Sample 11/29/19 10:45 12/06/19 15:42 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 29.9 6.21 ug/Sample 11/29/19 10:45 12/06/19 15:42 11,3,5-Trimethylbenzene ND 29.9 5.14 ug/Sample 11/29/19 10:45 12/06/19 15:42 11,3-Dichlorobenzene ND 29.9 3.35 ug/Sample 11/29/19 10:45 12/06/19 15:42 11,3-Dichloropropane ND 29.9 5.98 ug/Sample 11/29/19 10:45 12/06/19 15:42 11,4-Dichlorobenzene ND 59.8 6.10 ug/Sample 11/29/19 10:45 12/06/19 15:42 11-Chloro-1,1-difluoroethane ND 59.8 5.98 ug/Sample 11/29/19 10:45 12/06/19 15:42 12,2-dichloro-1,1-difluoroethylmethyl ether ND 29.9 8.72 ug/Sample 11/29/19 10:45 12/06/19 15:42 12,2-Dichloropropane ND 120 19.1 ug/Sample 11/29/19 10:45 12/06/19 15:42 12-Butanone (MEK)ND 59.8 8.84 ug/Sample 11/29/19 10:45 12/06/19 15:42 12-chloro-1,1,1,4,4,4-hexafluoro-2-but ene ND 59.8 5.98 ug/Sample 11/29/19 10:45 12/06/19 15:42 12-Chloro-1,1,1-Trifluoroethane ND 29.9 5.62 ug/Sample 11/29/19 10:45 12/06/19 15:42 12-Chlorotoluene ND 120 27.5 ug/Sample 11/29/19 10:45 12/06/19 15:42 12-Hexanone ND 26.1 26.1 ug/Sample 11/29/19 10:45 12/06/19 15:42 12-MTP as HFPO ND 29.9 6.21 ug/Sample 11/29/19 10:45 12/06/19 15:42 14-Chlorotoluene ND 29.9 8.01 ug/Sample 11/29/19 10:45 12/06/19 15:42 14-Isopropyltoluene ND 120 19.1 ug/Sample 11/29/19 10:45 12/06/19 15:42 14-Methyl-2-pentanone (MIBK)ND 120 70.5 ug/Sample 11/29/19 10:45 12/06/19 15:42 1AcetoneND 29.9 5.74 ug/Sample 11/29/19 10:45 12/06/19 15:42 1BenzeneND 29.9 4.18 ug/Sample 11/29/19 10:45 12/06/19 15:42 1BromobenzeneND 29.9 6.69 ug/Sample 11/29/19 10:45 12/06/19 15:42 1BromochloromethaneND 29.9 5.14 ug/Sample 11/29/19 10:45 12/06/19 15:42 1BromodichloromethaneND 29.9 9.08 ug/Sample 11/29/19 10:45 12/06/19 15:42 1BromoformND 59.8 34.7 ug/Sample 11/29/19 10:45 12/06/19 15:42 1BromomethaneND 29.9 7.41 ug/Sample 11/29/19 10:45 12/06/19 15:42 1Carbon disulfide ND 29.9 3.94 ug/Sample 11/29/19 10:45 12/06/19 15:42 1Carbon tetrachloride ND 87.9 87.9 ug/Sample 11/29/19 10:45 12/06/19 15:42 1Carbonyl Difluoride ND 29.9 4.30 ug/Sample 11/29/19 10:45 12/06/19 15:42 1ChlorobenzeneND 29.9 6.45 ug/Sample 11/29/19 10:45 12/06/19 15:42 1ChlorodibromomethaneND 59.8 13.1 ug/Sample 11/29/19 10:45 12/06/19 15:42 1ChloroethaneND 29.9 3.47 ug/Sample 11/29/19 10:45 12/06/19 15:42 1ChloroformND 59.8 24.9 ug/Sample 11/29/19 10:45 12/06/19 15:42 1ChloromethaneND 29.9 2.39 ug/Sample 11/29/19 10:45 12/06/19 15:42 1cis-1,2-Dichloroethene ND 29.9 5.14 ug/Sample 11/29/19 10:45 12/06/19 15:42 1cis-1,3-Dichloropropene ND 29.9 2.87 ug/Sample 11/29/19 10:45 12/06/19 15:42 1DibromomethaneND 59.8 10.5 ug/Sample 11/29/19 10:45 12/06/19 15:42 1DichlorodifluoromethaneND 29.9 4.90 ug/Sample 11/29/19 10:45 12/06/19 15:42 1EthylbenzeneND 29.9 29.9 ug/Sample 11/29/19 10:45 12/06/19 15:42 1Heptafluoropropyl 1,2,2,2-tetrafluoroethyl ether ND 29.9 7.89 ug/Sample 11/29/19 10:45 12/06/19 15:42 1HexachlorobutadieneND 28.7 28.7 ug/Sample 11/29/19 10:45 12/06/19 15:42 1HFPO dimer, methyl ester as HFPO-DA ND 29.9 4.18 ug/Sample 11/29/19 10:45 12/06/19 15:42 1IsopropylbenzeneND 59.8 4.90 ug/Sample 11/29/19 10:45 12/06/19 15:42 1m,p-Xylene ND 29.9 19.1 ug/Sample 11/29/19 10:45 12/06/19 15:42 1Methylene Chloride ND 29.9 14.3 ug/Sample 11/29/19 10:45 12/06/19 15:42 1NaphthaleneND Eurofins TestAmerica, Knoxville 12/23/2019Page 16 of 820140 Client Sample Results Job ID: 140-17462-1Client: Chemours Company FC, LLC The Project/Site: VEN MM-18 Field QC Lab Sample ID: 140-17462-2Client Sample ID: A-5781 QC VEN DIV STACK MM18 IMPINGER #2 BT Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) RL MDL n-Butylbenzene ND 29.9 7.65 ug/Sample 11/29/19 10:45 12/06/19 15:42 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 29.9 6.45 ug/Sample 11/29/19 10:45 12/06/19 15:42 1n-Propylbenzene ND 29.9 3.11 ug/Sample 11/29/19 10:45 12/06/19 15:42 1o-Xylene ND 29.9 5.86 ug/Sample 11/29/19 10:45 12/06/19 15:42 1sec-Butylbenzene ND 29.9 6.45 ug/Sample 11/29/19 10:45 12/06/19 15:42 1StyreneND 29.9 5.26 ug/Sample 11/29/19 10:45 12/06/19 15:42 1tert-Butylbenzene ND 29.9 3.94 ug/Sample 11/29/19 10:45 12/06/19 15:42 1TetrachloroetheneND 29.9 5.50 ug/Sample 11/29/19 10:45 12/06/19 15:42 1TolueneND 29.9 3.11 ug/Sample 11/29/19 10:45 12/06/19 15:42 1trans-1,2-Dichloroethene ND 29.9 10.5 ug/Sample 11/29/19 10:45 12/06/19 15:42 1trans-1,3-Dichloropropene ND 29.9 2.15 ug/Sample 11/29/19 10:45 12/06/19 15:42 1TrichloroetheneND 59.8 5.74 ug/Sample 11/29/19 10:45 12/06/19 15:42 1TrichlorofluoromethaneND * 59.8 14.3 ug/Sample 11/29/19 10:45 12/06/19 15:42 1Vinyl chloride ND Cyclohexane 43.3 T J N ug/Sample 4.42 110-82-7 11/29/19 10:45 12/06/19 15:42 1 Tentatively Identified Compound Dil FacAnalyzedPreparedUnit DQualifierEst. Result CAS No.RT 1,2-Dichloroethane-d4 (Surr)117 70 -160 11/29/19 10:45 12/06/19 15:42 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery 4-Bromofluorobenzene (Surr)109 11/29/19 10:45 12/06/19 15:42 157-152 Dibromofluoromethane (Surr)105 11/29/19 10:45 12/06/19 15:42 162-134 Toluene-d8 (Surr)96 11/29/19 10:45 12/06/19 15:42 171-139 Method: 9056 - Anions, Ion Chromatography RL MDL Total Fluorine 14800 6370 3190 ug/Sample 11/29/19 10:45 12/13/19 22:14 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 2630 1200 ug/Sample 11/29/19 10:45 12/18/19 13:40 20Hydrogen Fluoride ND Method: 8321A - PFOA and PFOS RL MDL HFPO-DA ND 0.0250 0.00500 ug/Sample 12/04/19 10:05 12/08/19 10:40 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 13C3 HFPO-DA 131 50 -200 12/04/19 10:05 12/08/19 10:40 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery General Chemistry RL MDL pH 4.00 HF SU 12/13/19 15:01 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Lab Sample ID: 140-17462-3Client Sample ID: A-5782 QC VEN DIV STACK MM18 IMPINGER #3 BT Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) RL MDL 1,1,1,2-Tetrachloroethane ND 29.1 3.84 ug/Sample 11/29/19 10:45 12/06/19 16:06 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 58.2 5.82 ug/Sample 11/29/19 10:45 12/06/19 16:06 11,1,1,3,3-Pentafluorobutane ND Eurofins TestAmerica, Knoxville 12/23/2019Page 17 of 820141 Client Sample Results Job ID: 140-17462-1Client: Chemours Company FC, LLC The Project/Site: VEN MM-18 Field QC Lab Sample ID: 140-17462-3Client Sample ID: A-5782 QC VEN DIV STACK MM18 IMPINGER #3 BT Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) RL MDL 1,1,1-Trichloroethane ND 29.1 4.19 ug/Sample 11/29/19 10:45 12/06/19 16:06 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 58.2 11.5 ug/Sample 11/29/19 10:45 12/06/19 16:06 11,1,1-Trifluoro-2,2-dichloroethane ND 58.2 5.82 ug/Sample 11/29/19 10:45 12/06/19 16:06 11,1,1-Trifluoroethane ND 29.1 5.59 ug/Sample 11/29/19 10:45 12/06/19 16:06 11,1,2,2-Tetrachloroethane ND 58.2 3.26 ug/Sample 11/29/19 10:45 12/06/19 16:06 11,1,2-Trichloro-1,2,2-trifluoroethane ND 58.2 5.82 ug/Sample 11/29/19 10:45 12/06/19 16:06 11,1,2-trichloro-1-fluoroethane ND 29.1 3.03 ug/Sample 11/29/19 10:45 12/06/19 16:06 11,1,2-Trichloroethane ND 58.2 29.1 ug/Sample 11/29/19 10:45 12/06/19 16:06 11,1-Dichloro-1-fluoroethane ND 58.2 5.82 ug/Sample 11/29/19 10:45 12/06/19 16:06 11,1-dichloro-2,2-difluoroethane ND 58.2 5.82 ug/Sample 11/29/19 10:45 12/06/19 16:06 11,1-dichloro-2,2-difluoroethene ND 29.1 3.49 ug/Sample 11/29/19 10:45 12/06/19 16:06 11,1-Dichloroethane ND 29.1 4.31 ug/Sample 11/29/19 10:45 12/06/19 16:06 11,1-Dichloroethene ND 29.1 3.14 ug/Sample 11/29/19 10:45 12/06/19 16:06 11,1-Dichloropropene ND 582 582 ug/Sample 11/29/19 10:45 12/06/19 16:06 11,1-Difluoroethene ND 58.2 5.82 ug/Sample 11/29/19 10:45 12/06/19 16:06 11,2,2-trichloro-1,1-difluoroethane ND 29.1 9.32 ug/Sample 11/29/19 10:45 12/06/19 16:06 11,2,3-Trichlorobenzene ND 29.1 7.22 ug/Sample 11/29/19 10:45 12/06/19 16:06 11,2,3-Trichloropropane ND 29.1 9.78 ug/Sample 11/29/19 10:45 12/06/19 16:06 11,2,4-Trichlorobenzene ND 29.1 6.06 ug/Sample 11/29/19 10:45 12/06/19 16:06 11,2,4-Trimethylbenzene ND 58.2 10.2 ug/Sample 11/29/19 10:45 12/06/19 16:06 11,2-Dibromo-3-Chloropropane ND 29.1 3.84 ug/Sample 11/29/19 10:45 12/06/19 16:06 11,2-Dibromoethane (EDB)ND 58.2 5.82 ug/Sample 11/29/19 10:45 12/06/19 16:06 11,2-dichloro-1,1-difluoroethane ND 29.1 5.12 ug/Sample 11/29/19 10:45 12/06/19 16:06 11,2-Dichlorobenzene ND 29.1 4.89 ug/Sample 11/29/19 10:45 12/06/19 16:06 11,2-Dichloroethane ND 29.1 2.91 ug/Sample 11/29/19 10:45 12/06/19 16:06 11,2-Dichloropropane ND 29.1 6.06 ug/Sample 11/29/19 10:45 12/06/19 16:06 11,3,5-Trimethylbenzene ND 29.1 5.01 ug/Sample 11/29/19 10:45 12/06/19 16:06 11,3-Dichlorobenzene ND 29.1 3.26 ug/Sample 11/29/19 10:45 12/06/19 16:06 11,3-Dichloropropane ND 29.1 5.82 ug/Sample 11/29/19 10:45 12/06/19 16:06 11,4-Dichlorobenzene ND 58.2 5.94 ug/Sample 11/29/19 10:45 12/06/19 16:06 11-Chloro-1,1-difluoroethane ND 58.2 5.82 ug/Sample 11/29/19 10:45 12/06/19 16:06 12,2-dichloro-1,1-difluoroethylmethyl ether ND 29.1 8.50 ug/Sample 11/29/19 10:45 12/06/19 16:06 12,2-Dichloropropane ND 116 18.6 ug/Sample 11/29/19 10:45 12/06/19 16:06 12-Butanone (MEK)ND 58.2 8.62 ug/Sample 11/29/19 10:45 12/06/19 16:06 12-chloro-1,1,1,4,4,4-hexafluoro-2-but ene ND 58.2 5.82 ug/Sample 11/29/19 10:45 12/06/19 16:06 12-Chloro-1,1,1-Trifluoroethane ND 29.1 5.47 ug/Sample 11/29/19 10:45 12/06/19 16:06 12-Chlorotoluene ND 116 26.8 ug/Sample 11/29/19 10:45 12/06/19 16:06 12-Hexanone ND 25.4 25.4 ug/Sample 11/29/19 10:45 12/06/19 16:06 12-MTP as HFPO ND 29.1 6.06 ug/Sample 11/29/19 10:45 12/06/19 16:06 14-Chlorotoluene ND 29.1 7.80 ug/Sample 11/29/19 10:45 12/06/19 16:06 14-Isopropyltoluene ND 116 18.6 ug/Sample 11/29/19 10:45 12/06/19 16:06 14-Methyl-2-pentanone (MIBK)ND 116 68.7 ug/Sample 11/29/19 10:45 12/06/19 16:06 1AcetoneND 29.1 5.59 ug/Sample 11/29/19 10:45 12/06/19 16:06 1BenzeneND 29.1 4.08 ug/Sample 11/29/19 10:45 12/06/19 16:06 1BromobenzeneND 29.1 6.52 ug/Sample 11/29/19 10:45 12/06/19 16:06 1BromochloromethaneND 29.1 5.01 ug/Sample 11/29/19 10:45 12/06/19 16:06 1BromodichloromethaneND Eurofins TestAmerica, Knoxville 12/23/2019Page 18 of 820142 Client Sample Results Job ID: 140-17462-1Client: Chemours Company FC, LLC The Project/Site: VEN MM-18 Field QC Lab Sample ID: 140-17462-3Client Sample ID: A-5782 QC VEN DIV STACK MM18 IMPINGER #3 BT Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) RL MDL Bromoform ND 29.1 8.85 ug/Sample 11/29/19 10:45 12/06/19 16:06 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 58.2 33.8 ug/Sample 11/29/19 10:45 12/06/19 16:06 1BromomethaneND 29.1 7.22 ug/Sample 11/29/19 10:45 12/06/19 16:06 1Carbon disulfide ND 29.1 3.84 ug/Sample 11/29/19 10:45 12/06/19 16:06 1Carbon tetrachloride ND 85.0 85.0 ug/Sample 11/29/19 10:45 12/06/19 16:06 1Carbonyl Difluoride ND 29.1 4.19 ug/Sample 11/29/19 10:45 12/06/19 16:06 1ChlorobenzeneND 29.1 6.29 ug/Sample 11/29/19 10:45 12/06/19 16:06 1ChlorodibromomethaneND 58.2 12.8 ug/Sample 11/29/19 10:45 12/06/19 16:06 1ChloroethaneND 29.1 3.38 ug/Sample 11/29/19 10:45 12/06/19 16:06 1ChloroformND 58.2 24.2 ug/Sample 11/29/19 10:45 12/06/19 16:06 1ChloromethaneND 29.1 2.33 ug/Sample 11/29/19 10:45 12/06/19 16:06 1cis-1,2-Dichloroethene ND 29.1 5.01 ug/Sample 11/29/19 10:45 12/06/19 16:06 1cis-1,3-Dichloropropene ND 29.1 2.80 ug/Sample 11/29/19 10:45 12/06/19 16:06 1DibromomethaneND 58.2 10.2 ug/Sample 11/29/19 10:45 12/06/19 16:06 1DichlorodifluoromethaneND 29.1 4.77 ug/Sample 11/29/19 10:45 12/06/19 16:06 1EthylbenzeneND 29.1 29.1 ug/Sample 11/29/19 10:45 12/06/19 16:06 1Heptafluoropropyl 1,2,2,2-tetrafluoroethyl ether ND 29.1 7.69 ug/Sample 11/29/19 10:45 12/06/19 16:06 1HexachlorobutadieneND 27.9 27.9 ug/Sample 11/29/19 10:45 12/06/19 16:06 1HFPO dimer, methyl ester as HFPO-DA ND 29.1 4.08 ug/Sample 11/29/19 10:45 12/06/19 16:06 1IsopropylbenzeneND 58.2 4.77 ug/Sample 11/29/19 10:45 12/06/19 16:06 1m,p-Xylene ND 29.1 18.6 ug/Sample 11/29/19 10:45 12/06/19 16:06 1Methylene Chloride ND 29.1 14.0 ug/Sample 11/29/19 10:45 12/06/19 16:06 1NaphthaleneND 29.1 7.45 ug/Sample 11/29/19 10:45 12/06/19 16:06 1n-Butylbenzene ND 29.1 6.29 ug/Sample 11/29/19 10:45 12/06/19 16:06 1n-Propylbenzene ND 29.1 3.03 ug/Sample 11/29/19 10:45 12/06/19 16:06 1o-Xylene ND 29.1 5.71 ug/Sample 11/29/19 10:45 12/06/19 16:06 1sec-Butylbenzene ND 29.1 6.29 ug/Sample 11/29/19 10:45 12/06/19 16:06 1StyreneND 29.1 5.12 ug/Sample 11/29/19 10:45 12/06/19 16:06 1tert-Butylbenzene ND 29.1 3.84 ug/Sample 11/29/19 10:45 12/06/19 16:06 1TetrachloroetheneND 29.1 5.36 ug/Sample 11/29/19 10:45 12/06/19 16:06 1TolueneND 29.1 3.03 ug/Sample 11/29/19 10:45 12/06/19 16:06 1trans-1,2-Dichloroethene ND 29.1 10.2 ug/Sample 11/29/19 10:45 12/06/19 16:06 1trans-1,3-Dichloropropene ND 29.1 2.10 ug/Sample 11/29/19 10:45 12/06/19 16:06 1TrichloroetheneND 58.2 5.59 ug/Sample 11/29/19 10:45 12/06/19 16:06 1TrichlorofluoromethaneND * 58.2 14.0 ug/Sample 11/29/19 10:45 12/06/19 16:06 1Vinyl chloride ND Cyclohexane 42.4 T J N ug/Sample 4.42 110-82-7 11/29/19 10:45 12/06/19 16:06 1 Tentatively Identified Compound Dil FacAnalyzedPreparedUnit DQualifierEst. Result CAS No.RT 1,2-Dichloroethane-d4 (Surr)117 70 -160 11/29/19 10:45 12/06/19 16:06 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery 4-Bromofluorobenzene (Surr)111 11/29/19 10:45 12/06/19 16:06 157-152 Dibromofluoromethane (Surr)104 11/29/19 10:45 12/06/19 16:06 162-134 Toluene-d8 (Surr)98 11/29/19 10:45 12/06/19 16:06 171-139 Eurofins TestAmerica, Knoxville 12/23/2019Page 19 of 820143 Client Sample Results Job ID: 140-17462-1Client: Chemours Company FC, LLC The Project/Site: VEN MM-18 Field QC Lab Sample ID: 140-17462-3Client Sample ID: A-5782 QC VEN DIV STACK MM18 IMPINGER #3 BT Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 9056 - Anions, Ion Chromatography RL MDL Total Fluorine 6110 J 6210 3110 ug/Sample 11/29/19 10:45 12/13/19 22:35 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 2560 1160 ug/Sample 11/29/19 10:45 12/18/19 14:01 20Hydrogen Fluoride ND Method: 8321A - PFOA and PFOS RL MDL HFPO-DA ND 0.0250 0.00500 ug/Sample 12/04/19 10:05 12/08/19 10:44 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 13C3 HFPO-DA 129 50 -200 12/04/19 10:05 12/08/19 10:44 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery General Chemistry RL MDL pH 4.00 HF SU 12/13/19 15:01 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Lab Sample ID: 140-17462-4Client Sample ID: A-5783 QC VEN DIV STACK MM18 IMPINGER #4 BT Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) RL MDL 1,1,1,2-Tetrachloroethane ND 30.4 4.02 ug/Sample 11/29/19 10:45 12/06/19 16:31 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 60.8 6.08 ug/Sample 11/29/19 10:45 12/06/19 16:31 11,1,1,3,3-Pentafluorobutane ND 30.4 4.38 ug/Sample 11/29/19 10:45 12/06/19 16:31 11,1,1-Trichloroethane ND 60.8 12.0 ug/Sample 11/29/19 10:45 12/06/19 16:31 11,1,1-Trifluoro-2,2-dichloroethane ND 60.8 6.08 ug/Sample 11/29/19 10:45 12/06/19 16:31 11,1,1-Trifluoroethane ND 30.4 5.84 ug/Sample 11/29/19 10:45 12/06/19 16:31 11,1,2,2-Tetrachloroethane ND 60.8 3.41 ug/Sample 11/29/19 10:45 12/06/19 16:31 11,1,2-Trichloro-1,2,2-trifluoroethane ND 60.8 6.08 ug/Sample 11/29/19 10:45 12/06/19 16:31 11,1,2-trichloro-1-fluoroethane ND 30.4 3.16 ug/Sample 11/29/19 10:45 12/06/19 16:31 11,1,2-Trichloroethane ND 60.8 30.4 ug/Sample 11/29/19 10:45 12/06/19 16:31 11,1-Dichloro-1-fluoroethane ND 60.8 6.08 ug/Sample 11/29/19 10:45 12/06/19 16:31 11,1-dichloro-2,2-difluoroethane ND 60.8 6.08 ug/Sample 11/29/19 10:45 12/06/19 16:31 11,1-dichloro-2,2-difluoroethene ND 30.4 3.65 ug/Sample 11/29/19 10:45 12/06/19 16:31 11,1-Dichloroethane ND 30.4 4.50 ug/Sample 11/29/19 10:45 12/06/19 16:31 11,1-Dichloroethene ND 30.4 3.29 ug/Sample 11/29/19 10:45 12/06/19 16:31 11,1-Dichloropropene ND 608 608 ug/Sample 11/29/19 10:45 12/06/19 16:31 11,1-Difluoroethene ND 60.8 6.08 ug/Sample 11/29/19 10:45 12/06/19 16:31 11,2,2-trichloro-1,1-difluoroethane ND 30.4 9.74 ug/Sample 11/29/19 10:45 12/06/19 16:31 11,2,3-Trichlorobenzene ND 30.4 7.54 ug/Sample 11/29/19 10:45 12/06/19 16:31 11,2,3-Trichloropropane ND 30.4 10.2 ug/Sample 11/29/19 10:45 12/06/19 16:31 11,2,4-Trichlorobenzene ND 30.4 6.33 ug/Sample 11/29/19 10:45 12/06/19 16:31 11,2,4-Trimethylbenzene ND 60.8 10.7 ug/Sample 11/29/19 10:45 12/06/19 16:31 11,2-Dibromo-3-Chloropropane ND 30.4 4.02 ug/Sample 11/29/19 10:45 12/06/19 16:31 11,2-Dibromoethane (EDB)ND 60.8 6.08 ug/Sample 11/29/19 10:45 12/06/19 16:31 11,2-dichloro-1,1-difluoroethane ND 30.4 5.35 ug/Sample 11/29/19 10:45 12/06/19 16:31 11,2-Dichlorobenzene ND 30.4 5.11 ug/Sample 11/29/19 10:45 12/06/19 16:31 11,2-Dichloroethane ND Eurofins TestAmerica, Knoxville 12/23/2019Page 20 of 820144 Client Sample Results Job ID: 140-17462-1Client: Chemours Company FC, LLC The Project/Site: VEN MM-18 Field QC Lab Sample ID: 140-17462-4Client Sample ID: A-5783 QC VEN DIV STACK MM18 IMPINGER #4 BT Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) RL MDL 1,2-Dichloropropane ND 30.4 3.04 ug/Sample 11/29/19 10:45 12/06/19 16:31 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 30.4 6.33 ug/Sample 11/29/19 10:45 12/06/19 16:31 11,3,5-Trimethylbenzene ND 30.4 5.23 ug/Sample 11/29/19 10:45 12/06/19 16:31 11,3-Dichlorobenzene ND 30.4 3.41 ug/Sample 11/29/19 10:45 12/06/19 16:31 11,3-Dichloropropane ND 30.4 6.08 ug/Sample 11/29/19 10:45 12/06/19 16:31 11,4-Dichlorobenzene ND 60.8 6.21 ug/Sample 11/29/19 10:45 12/06/19 16:31 11-Chloro-1,1-difluoroethane ND 60.8 6.08 ug/Sample 11/29/19 10:45 12/06/19 16:31 12,2-dichloro-1,1-difluoroethylmethyl ether ND 30.4 8.88 ug/Sample 11/29/19 10:45 12/06/19 16:31 12,2-Dichloropropane ND 122 19.5 ug/Sample 11/29/19 10:45 12/06/19 16:31 12-Butanone (MEK)ND 60.8 9.01 ug/Sample 11/29/19 10:45 12/06/19 16:31 12-chloro-1,1,1,4,4,4-hexafluoro-2-but ene ND 60.8 6.08 ug/Sample 11/29/19 10:45 12/06/19 16:31 12-Chloro-1,1,1-Trifluoroethane ND 30.4 5.72 ug/Sample 11/29/19 10:45 12/06/19 16:31 12-Chlorotoluene ND 122 28.0 ug/Sample 11/29/19 10:45 12/06/19 16:31 12-Hexanone ND 26.6 26.6 ug/Sample 11/29/19 10:45 12/06/19 16:31 12-MTP as HFPO ND 30.4 6.33 ug/Sample 11/29/19 10:45 12/06/19 16:31 14-Chlorotoluene ND 30.4 8.15 ug/Sample 11/29/19 10:45 12/06/19 16:31 14-Isopropyltoluene ND 122 19.5 ug/Sample 11/29/19 10:45 12/06/19 16:31 14-Methyl-2-pentanone (MIBK)ND 122 71.8 ug/Sample 11/29/19 10:45 12/06/19 16:31 1AcetoneND 30.4 5.84 ug/Sample 11/29/19 10:45 12/06/19 16:31 1BenzeneND 30.4 4.26 ug/Sample 11/29/19 10:45 12/06/19 16:31 1BromobenzeneND 30.4 6.81 ug/Sample 11/29/19 10:45 12/06/19 16:31 1BromochloromethaneND 30.4 5.23 ug/Sample 11/29/19 10:45 12/06/19 16:31 1BromodichloromethaneND 30.4 9.25 ug/Sample 11/29/19 10:45 12/06/19 16:31 1BromoformND 60.8 35.3 ug/Sample 11/29/19 10:45 12/06/19 16:31 1BromomethaneND 30.4 7.54 ug/Sample 11/29/19 10:45 12/06/19 16:31 1Carbon disulfide ND 30.4 4.02 ug/Sample 11/29/19 10:45 12/06/19 16:31 1Carbon tetrachloride ND 89.4 89.4 ug/Sample 11/29/19 10:45 12/06/19 16:31 1Carbonyl Difluoride ND 30.4 4.38 ug/Sample 11/29/19 10:45 12/06/19 16:31 1ChlorobenzeneND 30.4 6.57 ug/Sample 11/29/19 10:45 12/06/19 16:31 1ChlorodibromomethaneND 60.8 13.4 ug/Sample 11/29/19 10:45 12/06/19 16:31 1ChloroethaneND 30.4 3.53 ug/Sample 11/29/19 10:45 12/06/19 16:31 1ChloroformND 60.8 25.3 ug/Sample 11/29/19 10:45 12/06/19 16:31 1ChloromethaneND 30.4 2.43 ug/Sample 11/29/19 10:45 12/06/19 16:31 1cis-1,2-Dichloroethene ND 30.4 5.23 ug/Sample 11/29/19 10:45 12/06/19 16:31 1cis-1,3-Dichloropropene ND 30.4 2.92 ug/Sample 11/29/19 10:45 12/06/19 16:31 1DibromomethaneND 60.8 10.7 ug/Sample 11/29/19 10:45 12/06/19 16:31 1DichlorodifluoromethaneND 30.4 4.99 ug/Sample 11/29/19 10:45 12/06/19 16:31 1EthylbenzeneND 30.4 30.4 ug/Sample 11/29/19 10:45 12/06/19 16:31 1Heptafluoropropyl 1,2,2,2-tetrafluoroethyl ether ND 30.4 8.03 ug/Sample 11/29/19 10:45 12/06/19 16:31 1HexachlorobutadieneND 29.2 29.2 ug/Sample 11/29/19 10:45 12/06/19 16:31 1HFPO dimer, methyl ester as HFPO-DA ND 30.4 4.26 ug/Sample 11/29/19 10:45 12/06/19 16:31 1IsopropylbenzeneND 60.8 4.99 ug/Sample 11/29/19 10:45 12/06/19 16:31 1m,p-Xylene ND 30.4 19.5 ug/Sample 11/29/19 10:45 12/06/19 16:31 1Methylene Chloride ND 30.4 14.6 ug/Sample 11/29/19 10:45 12/06/19 16:31 1NaphthaleneND Eurofins TestAmerica, Knoxville 12/23/2019Page 21 of 820145 Client Sample Results Job ID: 140-17462-1Client: Chemours Company FC, LLC The Project/Site: VEN MM-18 Field QC Lab Sample ID: 140-17462-4Client Sample ID: A-5783 QC VEN DIV STACK MM18 IMPINGER #4 BT Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) RL MDL n-Butylbenzene ND 30.4 7.79 ug/Sample 11/29/19 10:45 12/06/19 16:31 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 30.4 6.57 ug/Sample 11/29/19 10:45 12/06/19 16:31 1n-Propylbenzene ND 30.4 3.16 ug/Sample 11/29/19 10:45 12/06/19 16:31 1o-Xylene ND 30.4 5.96 ug/Sample 11/29/19 10:45 12/06/19 16:31 1sec-Butylbenzene ND 30.4 6.57 ug/Sample 11/29/19 10:45 12/06/19 16:31 1StyreneND 30.4 5.35 ug/Sample 11/29/19 10:45 12/06/19 16:31 1tert-Butylbenzene ND 30.4 4.02 ug/Sample 11/29/19 10:45 12/06/19 16:31 1TetrachloroetheneND 30.4 5.60 ug/Sample 11/29/19 10:45 12/06/19 16:31 1TolueneND 30.4 3.16 ug/Sample 11/29/19 10:45 12/06/19 16:31 1trans-1,2-Dichloroethene ND 30.4 10.7 ug/Sample 11/29/19 10:45 12/06/19 16:31 1trans-1,3-Dichloropropene ND 30.4 2.19 ug/Sample 11/29/19 10:45 12/06/19 16:31 1TrichloroetheneND 60.8 5.84 ug/Sample 11/29/19 10:45 12/06/19 16:31 1TrichlorofluoromethaneND * 60.8 14.6 ug/Sample 11/29/19 10:45 12/06/19 16:31 1Vinyl chloride ND Cyclohexane 45.4 T J N ug/Sample 4.42 110-82-7 11/29/19 10:45 12/06/19 16:31 1 Tentatively Identified Compound Dil FacAnalyzedPreparedUnit DQualifierEst. Result CAS No.RT 1,2-Dichloroethane-d4 (Surr)118 70 -160 11/29/19 10:45 12/06/19 16:31 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery 4-Bromofluorobenzene (Surr)110 11/29/19 10:45 12/06/19 16:31 157-152 Dibromofluoromethane (Surr)104 11/29/19 10:45 12/06/19 16:31 162-134 Toluene-d8 (Surr)96 11/29/19 10:45 12/06/19 16:31 171-139 Method: 9056 - Anions, Ion Chromatography RL MDL Total Fluorine 4170 J 6490 3250 ug/Sample 11/29/19 10:45 12/13/19 22:56 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 2680 1220 ug/Sample 11/29/19 10:45 12/18/19 14:21 20Hydrogen Fluoride ND Method: 8321A - PFOA and PFOS RL MDL HFPO-DA ND 0.0250 0.00500 ug/Sample 12/04/19 10:05 12/08/19 10:47 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 13C3 HFPO-DA 126 50 -200 12/04/19 10:05 12/08/19 10:47 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery General Chemistry RL MDL pH 4.00 HF SU 12/13/19 15:03 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Lab Sample ID: 140-17462-5Client Sample ID: A-5784 QC VEN DIV STACK MM18 IMPINGER #5 BT Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) RL MDL 1,1,1,2-Tetrachloroethane ND 26.9 3.55 ug/Sample 11/29/19 10:45 12/06/19 16:55 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 53.8 5.38 ug/Sample 11/29/19 10:45 12/06/19 16:55 11,1,1,3,3-Pentafluorobutane ND Eurofins TestAmerica, Knoxville 12/23/2019Page 22 of 820146 Client Sample Results Job ID: 140-17462-1Client: Chemours Company FC, LLC The Project/Site: VEN MM-18 Field QC Lab Sample ID: 140-17462-5Client Sample ID: A-5784 QC VEN DIV STACK MM18 IMPINGER #5 BT Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) RL MDL 1,1,1-Trichloroethane ND 26.9 3.87 ug/Sample 11/29/19 10:45 12/06/19 16:55 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 53.8 10.6 ug/Sample 11/29/19 10:45 12/06/19 16:55 11,1,1-Trifluoro-2,2-dichloroethane ND 53.8 5.38 ug/Sample 11/29/19 10:45 12/06/19 16:55 11,1,1-Trifluoroethane ND 26.9 5.16 ug/Sample 11/29/19 10:45 12/06/19 16:55 11,1,2,2-Tetrachloroethane ND 53.8 3.01 ug/Sample 11/29/19 10:45 12/06/19 16:55 11,1,2-Trichloro-1,2,2-trifluoroethane ND 53.8 5.38 ug/Sample 11/29/19 10:45 12/06/19 16:55 11,1,2-trichloro-1-fluoroethane ND 26.9 2.80 ug/Sample 11/29/19 10:45 12/06/19 16:55 11,1,2-Trichloroethane ND 53.8 26.9 ug/Sample 11/29/19 10:45 12/06/19 16:55 11,1-Dichloro-1-fluoroethane ND 53.8 5.38 ug/Sample 11/29/19 10:45 12/06/19 16:55 11,1-dichloro-2,2-difluoroethane ND 53.8 5.38 ug/Sample 11/29/19 10:45 12/06/19 16:55 11,1-dichloro-2,2-difluoroethene ND 26.9 3.23 ug/Sample 11/29/19 10:45 12/06/19 16:55 11,1-Dichloroethane ND 26.9 3.98 ug/Sample 11/29/19 10:45 12/06/19 16:55 11,1-Dichloroethene ND 26.9 2.90 ug/Sample 11/29/19 10:45 12/06/19 16:55 11,1-Dichloropropene ND 538 538 ug/Sample 11/29/19 10:45 12/06/19 16:55 11,1-Difluoroethene ND 53.8 5.38 ug/Sample 11/29/19 10:45 12/06/19 16:55 11,2,2-trichloro-1,1-difluoroethane ND 26.9 8.60 ug/Sample 11/29/19 10:45 12/06/19 16:55 11,2,3-Trichlorobenzene ND 26.9 6.67 ug/Sample 11/29/19 10:45 12/06/19 16:55 11,2,3-Trichloropropane ND 26.9 9.03 ug/Sample 11/29/19 10:45 12/06/19 16:55 11,2,4-Trichlorobenzene ND 26.9 5.59 ug/Sample 11/29/19 10:45 12/06/19 16:55 11,2,4-Trimethylbenzene ND 53.8 9.46 ug/Sample 11/29/19 10:45 12/06/19 16:55 11,2-Dibromo-3-Chloropropane ND 26.9 3.55 ug/Sample 11/29/19 10:45 12/06/19 16:55 11,2-Dibromoethane (EDB)ND 53.8 5.38 ug/Sample 11/29/19 10:45 12/06/19 16:55 11,2-dichloro-1,1-difluoroethane ND 26.9 4.73 ug/Sample 11/29/19 10:45 12/06/19 16:55 11,2-Dichlorobenzene ND 26.9 4.52 ug/Sample 11/29/19 10:45 12/06/19 16:55 11,2-Dichloroethane ND 26.9 2.69 ug/Sample 11/29/19 10:45 12/06/19 16:55 11,2-Dichloropropane ND 26.9 5.59 ug/Sample 11/29/19 10:45 12/06/19 16:55 11,3,5-Trimethylbenzene ND 26.9 4.62 ug/Sample 11/29/19 10:45 12/06/19 16:55 11,3-Dichlorobenzene ND 26.9 3.01 ug/Sample 11/29/19 10:45 12/06/19 16:55 11,3-Dichloropropane ND 26.9 5.38 ug/Sample 11/29/19 10:45 12/06/19 16:55 11,4-Dichlorobenzene ND 53.8 5.48 ug/Sample 11/29/19 10:45 12/06/19 16:55 11-Chloro-1,1-difluoroethane ND 53.8 5.38 ug/Sample 11/29/19 10:45 12/06/19 16:55 12,2-dichloro-1,1-difluoroethylmethyl ether ND 26.9 7.85 ug/Sample 11/29/19 10:45 12/06/19 16:55 12,2-Dichloropropane ND 108 17.2 ug/Sample 11/29/19 10:45 12/06/19 16:55 12-Butanone (MEK)ND 53.8 7.96 ug/Sample 11/29/19 10:45 12/06/19 16:55 12-chloro-1,1,1,4,4,4-hexafluoro-2-but ene ND 53.8 5.38 ug/Sample 11/29/19 10:45 12/06/19 16:55 12-Chloro-1,1,1-Trifluoroethane ND 26.9 5.05 ug/Sample 11/29/19 10:45 12/06/19 16:55 12-Chlorotoluene ND 108 24.7 ug/Sample 11/29/19 10:45 12/06/19 16:55 12-Hexanone ND 23.5 23.5 ug/Sample 11/29/19 10:45 12/06/19 16:55 12-MTP as HFPO ND 26.9 5.59 ug/Sample 11/29/19 10:45 12/06/19 16:55 14-Chlorotoluene ND 26.9 7.20 ug/Sample 11/29/19 10:45 12/06/19 16:55 14-Isopropyltoluene ND 108 17.2 ug/Sample 11/29/19 10:45 12/06/19 16:55 14-Methyl-2-pentanone (MIBK)ND 108 63.4 ug/Sample 11/29/19 10:45 12/06/19 16:55 1AcetoneND 26.9 5.16 ug/Sample 11/29/19 10:45 12/06/19 16:55 1BenzeneND 26.9 3.76 ug/Sample 11/29/19 10:45 12/06/19 16:55 1BromobenzeneND 26.9 6.02 ug/Sample 11/29/19 10:45 12/06/19 16:55 1BromochloromethaneND 26.9 4.62 ug/Sample 11/29/19 10:45 12/06/19 16:55 1BromodichloromethaneND Eurofins TestAmerica, Knoxville 12/23/2019Page 23 of 820147 Client Sample Results Job ID: 140-17462-1Client: Chemours Company FC, LLC The Project/Site: VEN MM-18 Field QC Lab Sample ID: 140-17462-5Client Sample ID: A-5784 QC VEN DIV STACK MM18 IMPINGER #5 BT Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) RL MDL Bromoform ND 26.9 8.17 ug/Sample 11/29/19 10:45 12/06/19 16:55 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 53.8 31.2 ug/Sample 11/29/19 10:45 12/06/19 16:55 1BromomethaneND 26.9 6.67 ug/Sample 11/29/19 10:45 12/06/19 16:55 1Carbon disulfide ND 26.9 3.55 ug/Sample 11/29/19 10:45 12/06/19 16:55 1Carbon tetrachloride ND 79.1 79.1 ug/Sample 11/29/19 10:45 12/06/19 16:55 1Carbonyl Difluoride ND 26.9 3.87 ug/Sample 11/29/19 10:45 12/06/19 16:55 1ChlorobenzeneND 26.9 5.81 ug/Sample 11/29/19 10:45 12/06/19 16:55 1ChlorodibromomethaneND 53.8 11.8 ug/Sample 11/29/19 10:45 12/06/19 16:55 1ChloroethaneND 26.9 3.12 ug/Sample 11/29/19 10:45 12/06/19 16:55 1ChloroformND 53.8 22.4 ug/Sample 11/29/19 10:45 12/06/19 16:55 1ChloromethaneND 26.9 2.15 ug/Sample 11/29/19 10:45 12/06/19 16:55 1cis-1,2-Dichloroethene ND 26.9 4.62 ug/Sample 11/29/19 10:45 12/06/19 16:55 1cis-1,3-Dichloropropene ND 26.9 2.58 ug/Sample 11/29/19 10:45 12/06/19 16:55 1DibromomethaneND 53.8 9.46 ug/Sample 11/29/19 10:45 12/06/19 16:55 1DichlorodifluoromethaneND 26.9 4.41 ug/Sample 11/29/19 10:45 12/06/19 16:55 1EthylbenzeneND 26.9 26.9 ug/Sample 11/29/19 10:45 12/06/19 16:55 1Heptafluoropropyl 1,2,2,2-tetrafluoroethyl ether ND 26.9 7.10 ug/Sample 11/29/19 10:45 12/06/19 16:55 1HexachlorobutadieneND 25.8 25.8 ug/Sample 11/29/19 10:45 12/06/19 16:55 1HFPO dimer, methyl ester as HFPO-DA ND 26.9 3.76 ug/Sample 11/29/19 10:45 12/06/19 16:55 1IsopropylbenzeneND 53.8 4.41 ug/Sample 11/29/19 10:45 12/06/19 16:55 1m,p-Xylene ND 26.9 17.2 ug/Sample 11/29/19 10:45 12/06/19 16:55 1Methylene Chloride ND 26.9 12.9 ug/Sample 11/29/19 10:45 12/06/19 16:55 1NaphthaleneND 26.9 6.88 ug/Sample 11/29/19 10:45 12/06/19 16:55 1n-Butylbenzene ND 26.9 5.81 ug/Sample 11/29/19 10:45 12/06/19 16:55 1n-Propylbenzene ND 26.9 2.80 ug/Sample 11/29/19 10:45 12/06/19 16:55 1o-Xylene ND 26.9 5.27 ug/Sample 11/29/19 10:45 12/06/19 16:55 1sec-Butylbenzene ND 26.9 5.81 ug/Sample 11/29/19 10:45 12/06/19 16:55 1StyreneND 26.9 4.73 ug/Sample 11/29/19 10:45 12/06/19 16:55 1tert-Butylbenzene ND 26.9 3.55 ug/Sample 11/29/19 10:45 12/06/19 16:55 1TetrachloroetheneND 26.9 4.95 ug/Sample 11/29/19 10:45 12/06/19 16:55 1TolueneND 26.9 2.80 ug/Sample 11/29/19 10:45 12/06/19 16:55 1trans-1,2-Dichloroethene ND 26.9 9.46 ug/Sample 11/29/19 10:45 12/06/19 16:55 1trans-1,3-Dichloropropene ND 26.9 1.94 ug/Sample 11/29/19 10:45 12/06/19 16:55 1TrichloroetheneND 53.8 5.16 ug/Sample 11/29/19 10:45 12/06/19 16:55 1TrichlorofluoromethaneND * 53.8 12.9 ug/Sample 11/29/19 10:45 12/06/19 16:55 1Vinyl chloride ND Cyclohexane 43.6 T J N ug/Sample 4.42 110-82-7 11/29/19 10:45 12/06/19 16:55 1 Tentatively Identified Compound Dil FacAnalyzedPreparedUnit DQualifierEst. Result CAS No.RT 1,2-Dichloroethane-d4 (Surr)118 70 -160 11/29/19 10:45 12/06/19 16:55 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery 4-Bromofluorobenzene (Surr)109 11/29/19 10:45 12/06/19 16:55 157-152 Dibromofluoromethane (Surr)103 11/29/19 10:45 12/06/19 16:55 162-134 Toluene-d8 (Surr)96 11/29/19 10:45 12/06/19 16:55 171-139 Eurofins TestAmerica, Knoxville 12/23/2019Page 24 of 820148 Client Sample Results Job ID: 140-17462-1Client: Chemours Company FC, LLC The Project/Site: VEN MM-18 Field QC Lab Sample ID: 140-17462-5Client Sample ID: A-5784 QC VEN DIV STACK MM18 IMPINGER #5 BT Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 9056 - Anions, Ion Chromatography RL MDL Total Fluorine ND 5730 2870 ug/Sample 11/29/19 10:45 12/13/19 23:16 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 2370 1080 ug/Sample 11/29/19 10:45 12/18/19 14:42 20Hydrogen Fluoride ND Method: 8321A - PFOA and PFOS RL MDL HFPO-DA ND 0.0250 0.00500 ug/Sample 12/04/19 10:05 12/08/19 10:53 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 13C3 HFPO-DA 125 50 -200 12/04/19 10:05 12/08/19 10:53 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery General Chemistry RL MDL pH 4.00 HF SU 12/13/19 15:03 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Lab Sample ID: 140-17462-6Client Sample ID: A-5785 QC VEN DIV STACK MM18 IMPINGER #6 BT Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) RL MDL 1,1,1,2-Tetrachloroethane ND 29.1 3.84 ug/Sample 11/29/19 10:45 12/06/19 17:20 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 58.2 5.82 ug/Sample 11/29/19 10:45 12/06/19 17:20 11,1,1,3,3-Pentafluorobutane ND 29.1 4.19 ug/Sample 11/29/19 10:45 12/06/19 17:20 11,1,1-Trichloroethane ND 58.2 11.5 ug/Sample 11/29/19 10:45 12/06/19 17:20 11,1,1-Trifluoro-2,2-dichloroethane ND 58.2 5.82 ug/Sample 11/29/19 10:45 12/06/19 17:20 11,1,1-Trifluoroethane ND 29.1 5.59 ug/Sample 11/29/19 10:45 12/06/19 17:20 11,1,2,2-Tetrachloroethane ND 58.2 3.26 ug/Sample 11/29/19 10:45 12/06/19 17:20 11,1,2-Trichloro-1,2,2-trifluoroethane ND 58.2 5.82 ug/Sample 11/29/19 10:45 12/06/19 17:20 11,1,2-trichloro-1-fluoroethane ND 29.1 3.03 ug/Sample 11/29/19 10:45 12/06/19 17:20 11,1,2-Trichloroethane ND 58.2 29.1 ug/Sample 11/29/19 10:45 12/06/19 17:20 11,1-Dichloro-1-fluoroethane ND 58.2 5.82 ug/Sample 11/29/19 10:45 12/06/19 17:20 11,1-dichloro-2,2-difluoroethane ND 58.2 5.82 ug/Sample 11/29/19 10:45 12/06/19 17:20 11,1-dichloro-2,2-difluoroethene ND 29.1 3.49 ug/Sample 11/29/19 10:45 12/06/19 17:20 11,1-Dichloroethane ND 29.1 4.31 ug/Sample 11/29/19 10:45 12/06/19 17:20 11,1-Dichloroethene ND 29.1 3.14 ug/Sample 11/29/19 10:45 12/06/19 17:20 11,1-Dichloropropene ND 582 582 ug/Sample 11/29/19 10:45 12/06/19 17:20 11,1-Difluoroethene ND 58.2 5.82 ug/Sample 11/29/19 10:45 12/06/19 17:20 11,2,2-trichloro-1,1-difluoroethane ND 29.1 9.31 ug/Sample 11/29/19 10:45 12/06/19 17:20 11,2,3-Trichlorobenzene ND 29.1 7.22 ug/Sample 11/29/19 10:45 12/06/19 17:20 11,2,3-Trichloropropane ND 29.1 9.78 ug/Sample 11/29/19 10:45 12/06/19 17:20 11,2,4-Trichlorobenzene ND 29.1 6.05 ug/Sample 11/29/19 10:45 12/06/19 17:20 11,2,4-Trimethylbenzene ND 58.2 10.2 ug/Sample 11/29/19 10:45 12/06/19 17:20 11,2-Dibromo-3-Chloropropane ND 29.1 3.84 ug/Sample 11/29/19 10:45 12/06/19 17:20 11,2-Dibromoethane (EDB)ND 58.2 5.82 ug/Sample 11/29/19 10:45 12/06/19 17:20 11,2-dichloro-1,1-difluoroethane ND 29.1 5.12 ug/Sample 11/29/19 10:45 12/06/19 17:20 11,2-Dichlorobenzene ND 29.1 4.89 ug/Sample 11/29/19 10:45 12/06/19 17:20 11,2-Dichloroethane ND Eurofins TestAmerica, Knoxville 12/23/2019Page 25 of 820149 Client Sample Results Job ID: 140-17462-1Client: Chemours Company FC, LLC The Project/Site: VEN MM-18 Field QC Lab Sample ID: 140-17462-6Client Sample ID: A-5785 QC VEN DIV STACK MM18 IMPINGER #6 BT Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) RL MDL 1,2-Dichloropropane ND 29.1 2.91 ug/Sample 11/29/19 10:45 12/06/19 17:20 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 29.1 6.05 ug/Sample 11/29/19 10:45 12/06/19 17:20 11,3,5-Trimethylbenzene ND 29.1 5.01 ug/Sample 11/29/19 10:45 12/06/19 17:20 11,3-Dichlorobenzene ND 29.1 3.26 ug/Sample 11/29/19 10:45 12/06/19 17:20 11,3-Dichloropropane ND 29.1 5.82 ug/Sample 11/29/19 10:45 12/06/19 17:20 11,4-Dichlorobenzene ND 58.2 5.94 ug/Sample 11/29/19 10:45 12/06/19 17:20 11-Chloro-1,1-difluoroethane ND 58.2 5.82 ug/Sample 11/29/19 10:45 12/06/19 17:20 12,2-dichloro-1,1-difluoroethylmethyl ether ND 29.1 8.50 ug/Sample 11/29/19 10:45 12/06/19 17:20 12,2-Dichloropropane ND 116 18.6 ug/Sample 11/29/19 10:45 12/06/19 17:20 12-Butanone (MEK)ND 58.2 8.61 ug/Sample 11/29/19 10:45 12/06/19 17:20 12-chloro-1,1,1,4,4,4-hexafluoro-2-but ene ND 58.2 5.82 ug/Sample 11/29/19 10:45 12/06/19 17:20 12-Chloro-1,1,1-Trifluoroethane ND 29.1 5.47 ug/Sample 11/29/19 10:45 12/06/19 17:20 12-Chlorotoluene ND 116 26.8 ug/Sample 11/29/19 10:45 12/06/19 17:20 12-Hexanone ND 25.4 25.4 ug/Sample 11/29/19 10:45 12/06/19 17:20 12-MTP as HFPO ND 29.1 6.05 ug/Sample 11/29/19 10:45 12/06/19 17:20 14-Chlorotoluene ND 29.1 7.80 ug/Sample 11/29/19 10:45 12/06/19 17:20 14-Isopropyltoluene ND 116 18.6 ug/Sample 11/29/19 10:45 12/06/19 17:20 14-Methyl-2-pentanone (MIBK)ND 116 68.7 ug/Sample 11/29/19 10:45 12/06/19 17:20 1AcetoneND 29.1 5.59 ug/Sample 11/29/19 10:45 12/06/19 17:20 1BenzeneND 29.1 4.07 ug/Sample 11/29/19 10:45 12/06/19 17:20 1BromobenzeneND 29.1 6.52 ug/Sample 11/29/19 10:45 12/06/19 17:20 1BromochloromethaneND 29.1 5.01 ug/Sample 11/29/19 10:45 12/06/19 17:20 1BromodichloromethaneND 29.1 8.85 ug/Sample 11/29/19 10:45 12/06/19 17:20 1BromoformND 58.2 33.8 ug/Sample 11/29/19 10:45 12/06/19 17:20 1BromomethaneND 29.1 7.22 ug/Sample 11/29/19 10:45 12/06/19 17:20 1Carbon disulfide ND 29.1 3.84 ug/Sample 11/29/19 10:45 12/06/19 17:20 1Carbon tetrachloride ND 85.0 85.0 ug/Sample 11/29/19 10:45 12/06/19 17:20 1Carbonyl Difluoride ND 29.1 4.19 ug/Sample 11/29/19 10:45 12/06/19 17:20 1ChlorobenzeneND 29.1 6.29 ug/Sample 11/29/19 10:45 12/06/19 17:20 1ChlorodibromomethaneND 58.2 12.8 ug/Sample 11/29/19 10:45 12/06/19 17:20 1ChloroethaneND 29.1 3.38 ug/Sample 11/29/19 10:45 12/06/19 17:20 1ChloroformND 58.2 24.2 ug/Sample 11/29/19 10:45 12/06/19 17:20 1ChloromethaneND 29.1 2.33 ug/Sample 11/29/19 10:45 12/06/19 17:20 1cis-1,2-Dichloroethene ND 29.1 5.01 ug/Sample 11/29/19 10:45 12/06/19 17:20 1cis-1,3-Dichloropropene ND 29.1 2.79 ug/Sample 11/29/19 10:45 12/06/19 17:20 1DibromomethaneND 58.2 10.2 ug/Sample 11/29/19 10:45 12/06/19 17:20 1DichlorodifluoromethaneND 29.1 4.77 ug/Sample 11/29/19 10:45 12/06/19 17:20 1EthylbenzeneND 29.1 29.1 ug/Sample 11/29/19 10:45 12/06/19 17:20 1Heptafluoropropyl 1,2,2,2-tetrafluoroethyl ether ND 29.1 7.68 ug/Sample 11/29/19 10:45 12/06/19 17:20 1HexachlorobutadieneND 27.9 27.9 ug/Sample 11/29/19 10:45 12/06/19 17:20 1HFPO dimer, methyl ester as HFPO-DA ND 29.1 4.07 ug/Sample 11/29/19 10:45 12/06/19 17:20 1IsopropylbenzeneND 58.2 4.77 ug/Sample 11/29/19 10:45 12/06/19 17:20 1m,p-Xylene ND 29.1 18.6 ug/Sample 11/29/19 10:45 12/06/19 17:20 1Methylene Chloride ND 29.1 14.0 ug/Sample 11/29/19 10:45 12/06/19 17:20 1NaphthaleneND Eurofins TestAmerica, Knoxville 12/23/2019Page 26 of 820150 Client Sample Results Job ID: 140-17462-1Client: Chemours Company FC, LLC The Project/Site: VEN MM-18 Field QC Lab Sample ID: 140-17462-6Client Sample ID: A-5785 QC VEN DIV STACK MM18 IMPINGER #6 BT Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) RL MDL n-Butylbenzene ND 29.1 7.45 ug/Sample 11/29/19 10:45 12/06/19 17:20 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 29.1 6.29 ug/Sample 11/29/19 10:45 12/06/19 17:20 1n-Propylbenzene ND 29.1 3.03 ug/Sample 11/29/19 10:45 12/06/19 17:20 1o-Xylene ND 29.1 5.70 ug/Sample 11/29/19 10:45 12/06/19 17:20 1sec-Butylbenzene ND 29.1 6.29 ug/Sample 11/29/19 10:45 12/06/19 17:20 1StyreneND 29.1 5.12 ug/Sample 11/29/19 10:45 12/06/19 17:20 1tert-Butylbenzene ND 29.1 3.84 ug/Sample 11/29/19 10:45 12/06/19 17:20 1TetrachloroetheneND 29.1 5.35 ug/Sample 11/29/19 10:45 12/06/19 17:20 1TolueneND 29.1 3.03 ug/Sample 11/29/19 10:45 12/06/19 17:20 1trans-1,2-Dichloroethene ND 29.1 10.2 ug/Sample 11/29/19 10:45 12/06/19 17:20 1trans-1,3-Dichloropropene ND 29.1 2.10 ug/Sample 11/29/19 10:45 12/06/19 17:20 1TrichloroetheneND 58.2 5.59 ug/Sample 11/29/19 10:45 12/06/19 17:20 1TrichlorofluoromethaneND * 58.2 14.0 ug/Sample 11/29/19 10:45 12/06/19 17:20 1Vinyl chloride ND Tentatively Identified Compound None ug/Sample 11/29/19 10:45 12/06/19 17:20 1 Tentatively Identified Compound Dil FacAnalyzedPreparedUnit DQualifierEst. Result CAS No.RT 1,2-Dichloroethane-d4 (Surr)119 70 -160 11/29/19 10:45 12/06/19 17:20 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery 4-Bromofluorobenzene (Surr)109 11/29/19 10:45 12/06/19 17:20 157-152 Dibromofluoromethane (Surr)104 11/29/19 10:45 12/06/19 17:20 162-134 Toluene-d8 (Surr)96 11/29/19 10:45 12/06/19 17:20 171-139 Method: 9056 - Anions, Ion Chromatography RL MDL Total Fluorine ND 6480 3240 ug/Sample 11/29/19 10:45 12/13/19 23:37 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 2560 1160 ug/Sample 11/29/19 10:45 12/18/19 15:03 20Hydrogen Fluoride ND Method: 8321A - PFOA and PFOS RL MDL HFPO-DA ND 0.0250 0.00500 ug/Sample 12/04/19 10:05 12/08/19 10:57 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 13C3 HFPO-DA 127 50 -200 12/04/19 10:05 12/08/19 10:57 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery General Chemistry RL MDL pH 4.00 HF SU 12/13/19 15:03 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Lab Sample ID: 140-17462-7Client Sample ID: A-5786 QC MEOH RB Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) RL MDL 1,1,1,2-Tetrachloroethane ND 20.3 2.68 ug/Sample 11/29/19 10:45 12/06/19 14:04 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 40.6 4.06 ug/Sample 11/29/19 10:45 12/06/19 14:04 11,1,1,3,3-Pentafluorobutane ND 20.3 2.93 ug/Sample 11/29/19 10:45 12/06/19 14:04 11,1,1-Trichloroethane ND Eurofins TestAmerica, Knoxville 12/23/2019Page 27 of 820151 Client Sample Results Job ID: 140-17462-1Client: Chemours Company FC, LLC The Project/Site: VEN MM-18 Field QC Lab Sample ID: 140-17462-7Client Sample ID: A-5786 QC MEOH RB Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) RL MDL 1,1,1-Trifluoro-2,2-dichloroethane ND 40.6 8.04 ug/Sample 11/29/19 10:45 12/06/19 14:04 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 40.6 4.06 ug/Sample 11/29/19 10:45 12/06/19 14:04 11,1,1-Trifluoroethane ND 20.3 3.90 ug/Sample 11/29/19 10:45 12/06/19 14:04 11,1,2,2-Tetrachloroethane ND 40.6 2.28 ug/Sample 11/29/19 10:45 12/06/19 14:04 11,1,2-Trichloro-1,2,2-trifluoroethane ND 40.6 4.06 ug/Sample 11/29/19 10:45 12/06/19 14:04 11,1,2-trichloro-1-fluoroethane ND 20.3 2.11 ug/Sample 11/29/19 10:45 12/06/19 14:04 11,1,2-Trichloroethane ND 40.6 20.3 ug/Sample 11/29/19 10:45 12/06/19 14:04 11,1-Dichloro-1-fluoroethane ND 40.6 4.06 ug/Sample 11/29/19 10:45 12/06/19 14:04 11,1-dichloro-2,2-difluoroethane ND 40.6 4.06 ug/Sample 11/29/19 10:45 12/06/19 14:04 11,1-dichloro-2,2-difluoroethene ND 20.3 2.44 ug/Sample 11/29/19 10:45 12/06/19 14:04 11,1-Dichloroethane ND 20.3 3.01 ug/Sample 11/29/19 10:45 12/06/19 14:04 11,1-Dichloroethene ND 20.3 2.19 ug/Sample 11/29/19 10:45 12/06/19 14:04 11,1-Dichloropropene ND 406 406 ug/Sample 11/29/19 10:45 12/06/19 14:04 11,1-Difluoroethene ND 40.6 4.06 ug/Sample 11/29/19 10:45 12/06/19 14:04 11,2,2-trichloro-1,1-difluoroethane ND 20.3 6.50 ug/Sample 11/29/19 10:45 12/06/19 14:04 11,2,3-Trichlorobenzene ND 20.3 5.04 ug/Sample 11/29/19 10:45 12/06/19 14:04 11,2,3-Trichloropropane ND 20.3 6.83 ug/Sample 11/29/19 10:45 12/06/19 14:04 11,2,4-Trichlorobenzene ND 20.3 4.23 ug/Sample 11/29/19 10:45 12/06/19 14:04 11,2,4-Trimethylbenzene ND 40.6 7.15 ug/Sample 11/29/19 10:45 12/06/19 14:04 11,2-Dibromo-3-Chloropropane ND 20.3 2.68 ug/Sample 11/29/19 10:45 12/06/19 14:04 11,2-Dibromoethane (EDB)ND 40.6 4.06 ug/Sample 11/29/19 10:45 12/06/19 14:04 11,2-dichloro-1,1-difluoroethane ND 20.3 3.58 ug/Sample 11/29/19 10:45 12/06/19 14:04 11,2-Dichlorobenzene ND 20.3 3.41 ug/Sample 11/29/19 10:45 12/06/19 14:04 11,2-Dichloroethane ND 20.3 2.03 ug/Sample 11/29/19 10:45 12/06/19 14:04 11,2-Dichloropropane ND 20.3 4.23 ug/Sample 11/29/19 10:45 12/06/19 14:04 11,3,5-Trimethylbenzene ND 20.3 3.49 ug/Sample 11/29/19 10:45 12/06/19 14:04 11,3-Dichlorobenzene ND 20.3 2.28 ug/Sample 11/29/19 10:45 12/06/19 14:04 11,3-Dichloropropane ND 20.3 4.06 ug/Sample 11/29/19 10:45 12/06/19 14:04 11,4-Dichlorobenzene ND 40.6 4.14 ug/Sample 11/29/19 10:45 12/06/19 14:04 11-Chloro-1,1-difluoroethane ND 40.6 4.06 ug/Sample 11/29/19 10:45 12/06/19 14:04 12,2-dichloro-1,1-difluoroethylmethyl ether ND 20.3 5.93 ug/Sample 11/29/19 10:45 12/06/19 14:04 12,2-Dichloropropane ND 81.3 13.0 ug/Sample 11/29/19 10:45 12/06/19 14:04 12-Butanone (MEK)ND 40.6 6.01 ug/Sample 11/29/19 10:45 12/06/19 14:04 12-chloro-1,1,1,4,4,4-hexafluoro-2-but ene ND 40.6 4.06 ug/Sample 11/29/19 10:45 12/06/19 14:04 12-Chloro-1,1,1-Trifluoroethane ND 20.3 3.82 ug/Sample 11/29/19 10:45 12/06/19 14:04 12-Chlorotoluene ND 81.3 18.7 ug/Sample 11/29/19 10:45 12/06/19 14:04 12-Hexanone ND 17.7 17.7 ug/Sample 11/29/19 10:45 12/06/19 14:04 12-MTP as HFPO ND 20.3 4.23 ug/Sample 11/29/19 10:45 12/06/19 14:04 14-Chlorotoluene ND 20.3 5.44 ug/Sample 11/29/19 10:45 12/06/19 14:04 14-Isopropyltoluene ND 81.3 13.0 ug/Sample 11/29/19 10:45 12/06/19 14:04 14-Methyl-2-pentanone (MIBK)ND 81.3 47.9 ug/Sample 11/29/19 10:45 12/06/19 14:04 1AcetoneND 20.3 3.90 ug/Sample 11/29/19 10:45 12/06/19 14:04 1BenzeneND 20.3 2.84 ug/Sample 11/29/19 10:45 12/06/19 14:04 1BromobenzeneND 20.3 4.55 ug/Sample 11/29/19 10:45 12/06/19 14:04 1BromochloromethaneND 20.3 3.49 ug/Sample 11/29/19 10:45 12/06/19 14:04 1BromodichloromethaneND 20.3 6.18 ug/Sample 11/29/19 10:45 12/06/19 14:04 1BromoformND 40.6 23.6 ug/Sample 11/29/19 10:45 12/06/19 14:04 1BromomethaneND Eurofins TestAmerica, Knoxville 12/23/2019Page 28 of 820152 Client Sample Results Job ID: 140-17462-1Client: Chemours Company FC, LLC The Project/Site: VEN MM-18 Field QC Lab Sample ID: 140-17462-7Client Sample ID: A-5786 QC MEOH RB Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) RL MDL Carbon disulfide ND 20.3 5.04 ug/Sample 11/29/19 10:45 12/06/19 14:04 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 20.3 2.68 ug/Sample 11/29/19 10:45 12/06/19 14:04 1Carbon tetrachloride ND 59.6 59.6 ug/Sample 11/29/19 10:45 12/06/19 14:04 1Carbonyl Difluoride ND 20.3 2.93 ug/Sample 11/29/19 10:45 12/06/19 14:04 1ChlorobenzeneND 20.3 4.39 ug/Sample 11/29/19 10:45 12/06/19 14:04 1ChlorodibromomethaneND 40.6 8.94 ug/Sample 11/29/19 10:45 12/06/19 14:04 1ChloroethaneND 20.3 2.36 ug/Sample 11/29/19 10:45 12/06/19 14:04 1ChloroformND 40.6 16.9 ug/Sample 11/29/19 10:45 12/06/19 14:04 1ChloromethaneND 20.3 1.63 ug/Sample 11/29/19 10:45 12/06/19 14:04 1cis-1,2-Dichloroethene ND 20.3 3.49 ug/Sample 11/29/19 10:45 12/06/19 14:04 1cis-1,3-Dichloropropene ND 20.3 1.95 ug/Sample 11/29/19 10:45 12/06/19 14:04 1DibromomethaneND 40.6 7.15 ug/Sample 11/29/19 10:45 12/06/19 14:04 1DichlorodifluoromethaneND 20.3 3.33 ug/Sample 11/29/19 10:45 12/06/19 14:04 1EthylbenzeneND 20.3 20.3 ug/Sample 11/29/19 10:45 12/06/19 14:04 1Heptafluoropropyl 1,2,2,2-tetrafluoroethyl ether ND 20.3 5.36 ug/Sample 11/29/19 10:45 12/06/19 14:04 1HexachlorobutadieneND 19.5 19.5 ug/Sample 11/29/19 10:45 12/06/19 14:04 1HFPO dimer, methyl ester as HFPO-DA ND 20.3 2.84 ug/Sample 11/29/19 10:45 12/06/19 14:04 1IsopropylbenzeneND 40.6 3.33 ug/Sample 11/29/19 10:45 12/06/19 14:04 1m,p-Xylene ND 20.3 13.0 ug/Sample 11/29/19 10:45 12/06/19 14:04 1Methylene Chloride 13.1 J B 20.3 9.75 ug/Sample 11/29/19 10:45 12/06/19 14:04 1NaphthaleneND 20.3 5.20 ug/Sample 11/29/19 10:45 12/06/19 14:04 1n-Butylbenzene ND 20.3 4.39 ug/Sample 11/29/19 10:45 12/06/19 14:04 1n-Propylbenzene ND 20.3 2.11 ug/Sample 11/29/19 10:45 12/06/19 14:04 1o-Xylene ND 20.3 3.98 ug/Sample 11/29/19 10:45 12/06/19 14:04 1sec-Butylbenzene ND 20.3 4.39 ug/Sample 11/29/19 10:45 12/06/19 14:04 1StyreneND 20.3 3.58 ug/Sample 11/29/19 10:45 12/06/19 14:04 1tert-Butylbenzene ND 20.3 2.68 ug/Sample 11/29/19 10:45 12/06/19 14:04 1TetrachloroetheneND 20.3 3.74 ug/Sample 11/29/19 10:45 12/06/19 14:04 1TolueneND 20.3 2.11 ug/Sample 11/29/19 10:45 12/06/19 14:04 1trans-1,2-Dichloroethene ND 20.3 7.15 ug/Sample 11/29/19 10:45 12/06/19 14:04 1trans-1,3-Dichloropropene ND 20.3 1.46 ug/Sample 11/29/19 10:45 12/06/19 14:04 1TrichloroetheneND 40.6 3.90 ug/Sample 11/29/19 10:45 12/06/19 14:04 1TrichlorofluoromethaneND * 40.6 9.75 ug/Sample 11/29/19 10:45 12/06/19 14:04 1Vinyl chloride ND Cyclohexane 34.9 T J N ug/Sample 4.42 110-82-7 11/29/19 10:45 12/06/19 14:04 1 Tentatively Identified Compound Dil FacAnalyzedPreparedUnit DQualifierEst. Result CAS No.RT 1,2-Dichloroethane-d4 (Surr)116 70 -160 11/29/19 10:45 12/06/19 14:04 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery 4-Bromofluorobenzene (Surr)110 11/29/19 10:45 12/06/19 14:04 157-152 Dibromofluoromethane (Surr)104 11/29/19 10:45 12/06/19 14:04 162-134 Toluene-d8 (Surr)97 11/29/19 10:45 12/06/19 14:04 171-139 Method: 9056 - Anions, Ion Chromatography RL MDL Total Fluorine ND 4330 2170 ug/Sample 11/29/19 10:45 12/13/19 23:58 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1790 813 ug/Sample 11/29/19 10:45 12/18/19 15:24 20Hydrogen Fluoride ND Eurofins TestAmerica, Knoxville 12/23/2019Page 29 of 820153 Client Sample Results Job ID: 140-17462-1Client: Chemours Company FC, LLC The Project/Site: VEN MM-18 Field QC Lab Sample ID: 140-17462-7Client Sample ID: A-5786 QC MEOH RB Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8321A - PFOA and PFOS RL MDL HFPO-DA 0.0106 J 0.0250 0.00500 ug/Sample 12/04/19 10:05 12/08/19 11:00 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 13C3 HFPO-DA 125 50 -200 12/04/19 10:05 12/08/19 11:00 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery General Chemistry RL MDL pH 4.00 HF SU 12/13/19 15:03 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Lab Sample ID: 140-17462-8Client Sample ID: A-5787 QC MEOH TB Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) RL MDL 1,1,1,2-Tetrachloroethane ND 15.4 2.03 ug/Sample 11/29/19 10:45 12/06/19 14:28 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 30.8 3.08 ug/Sample 11/29/19 10:45 12/06/19 14:28 11,1,1,3,3-Pentafluorobutane ND 15.4 2.22 ug/Sample 11/29/19 10:45 12/06/19 14:28 11,1,1-Trichloroethane ND 30.8 6.09 ug/Sample 11/29/19 10:45 12/06/19 14:28 11,1,1-Trifluoro-2,2-dichloroethane ND 30.8 3.08 ug/Sample 11/29/19 10:45 12/06/19 14:28 11,1,1-Trifluoroethane ND 15.4 2.95 ug/Sample 11/29/19 10:45 12/06/19 14:28 11,1,2,2-Tetrachloroethane ND 30.8 1.72 ug/Sample 11/29/19 10:45 12/06/19 14:28 11,1,2-Trichloro-1,2,2-trifluoroethane ND 30.8 3.08 ug/Sample 11/29/19 10:45 12/06/19 14:28 11,1,2-trichloro-1-fluoroethane ND 15.4 1.60 ug/Sample 11/29/19 10:45 12/06/19 14:28 11,1,2-Trichloroethane ND 30.8 15.4 ug/Sample 11/29/19 10:45 12/06/19 14:28 11,1-Dichloro-1-fluoroethane ND 30.8 3.08 ug/Sample 11/29/19 10:45 12/06/19 14:28 11,1-dichloro-2,2-difluoroethane ND 30.8 3.08 ug/Sample 11/29/19 10:45 12/06/19 14:28 11,1-dichloro-2,2-difluoroethene ND 15.4 1.85 ug/Sample 11/29/19 10:45 12/06/19 14:28 11,1-Dichloroethane ND 15.4 2.28 ug/Sample 11/29/19 10:45 12/06/19 14:28 11,1-Dichloroethene ND 15.4 1.66 ug/Sample 11/29/19 10:45 12/06/19 14:28 11,1-Dichloropropene ND 308 308 ug/Sample 11/29/19 10:45 12/06/19 14:28 11,1-Difluoroethene ND 30.8 3.08 ug/Sample 11/29/19 10:45 12/06/19 14:28 11,2,2-trichloro-1,1-difluoroethane ND 15.4 4.92 ug/Sample 11/29/19 10:45 12/06/19 14:28 11,2,3-Trichlorobenzene ND 15.4 3.82 ug/Sample 11/29/19 10:45 12/06/19 14:28 11,2,3-Trichloropropane ND 15.4 5.17 ug/Sample 11/29/19 10:45 12/06/19 14:28 11,2,4-Trichlorobenzene ND 15.4 3.20 ug/Sample 11/29/19 10:45 12/06/19 14:28 11,2,4-Trimethylbenzene ND 30.8 5.42 ug/Sample 11/29/19 10:45 12/06/19 14:28 11,2-Dibromo-3-Chloropropane ND 15.4 2.03 ug/Sample 11/29/19 10:45 12/06/19 14:28 11,2-Dibromoethane (EDB)ND 30.8 3.08 ug/Sample 11/29/19 10:45 12/06/19 14:28 11,2-dichloro-1,1-difluoroethane ND 15.4 2.71 ug/Sample 11/29/19 10:45 12/06/19 14:28 11,2-Dichlorobenzene ND 15.4 2.59 ug/Sample 11/29/19 10:45 12/06/19 14:28 11,2-Dichloroethane ND 15.4 1.54 ug/Sample 11/29/19 10:45 12/06/19 14:28 11,2-Dichloropropane ND 15.4 3.20 ug/Sample 11/29/19 10:45 12/06/19 14:28 11,3,5-Trimethylbenzene ND 15.4 2.65 ug/Sample 11/29/19 10:45 12/06/19 14:28 11,3-Dichlorobenzene ND 15.4 1.72 ug/Sample 11/29/19 10:45 12/06/19 14:28 11,3-Dichloropropane ND 15.4 3.08 ug/Sample 11/29/19 10:45 12/06/19 14:28 11,4-Dichlorobenzene ND 30.8 3.14 ug/Sample 11/29/19 10:45 12/06/19 14:28 11-Chloro-1,1-difluoroethane ND 30.8 3.08 ug/Sample 11/29/19 10:45 12/06/19 14:28 12,2-dichloro-1,1-difluoroethylmethyl ether ND Eurofins TestAmerica, Knoxville 12/23/2019Page 30 of 820154 Client Sample Results Job ID: 140-17462-1Client: Chemours Company FC, LLC The Project/Site: VEN MM-18 Field QC Lab Sample ID: 140-17462-8Client Sample ID: A-5787 QC MEOH TB Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) RL MDL 2,2-Dichloropropane ND 15.4 4.49 ug/Sample 11/29/19 10:45 12/06/19 14:28 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 61.6 9.85 ug/Sample 11/29/19 10:45 12/06/19 14:28 12-Butanone (MEK)ND 30.8 4.55 ug/Sample 11/29/19 10:45 12/06/19 14:28 12-chloro-1,1,1,4,4,4-hexafluoro-2-but ene ND 30.8 3.08 ug/Sample 11/29/19 10:45 12/06/19 14:28 12-Chloro-1,1,1-Trifluoroethane ND 15.4 2.89 ug/Sample 11/29/19 10:45 12/06/19 14:28 12-Chlorotoluene ND 61.6 14.2 ug/Sample 11/29/19 10:45 12/06/19 14:28 12-Hexanone ND 13.5 13.5 ug/Sample 11/29/19 10:45 12/06/19 14:28 12-MTP as HFPO ND 15.4 3.20 ug/Sample 11/29/19 10:45 12/06/19 14:28 14-Chlorotoluene ND 15.4 4.12 ug/Sample 11/29/19 10:45 12/06/19 14:28 14-Isopropyltoluene ND 61.6 9.85 ug/Sample 11/29/19 10:45 12/06/19 14:28 14-Methyl-2-pentanone (MIBK)ND 61.6 36.3 ug/Sample 11/29/19 10:45 12/06/19 14:28 1AcetoneND 15.4 2.95 ug/Sample 11/29/19 10:45 12/06/19 14:28 1BenzeneND 15.4 2.15 ug/Sample 11/29/19 10:45 12/06/19 14:28 1BromobenzeneND 15.4 3.45 ug/Sample 11/29/19 10:45 12/06/19 14:28 1BromochloromethaneND 15.4 2.65 ug/Sample 11/29/19 10:45 12/06/19 14:28 1BromodichloromethaneND 15.4 4.68 ug/Sample 11/29/19 10:45 12/06/19 14:28 1BromoformND 30.8 17.8 ug/Sample 11/29/19 10:45 12/06/19 14:28 1BromomethaneND 15.4 3.82 ug/Sample 11/29/19 10:45 12/06/19 14:28 1Carbon disulfide ND 15.4 2.03 ug/Sample 11/29/19 10:45 12/06/19 14:28 1Carbon tetrachloride ND 45.1 45.1 ug/Sample 11/29/19 10:45 12/06/19 14:28 1Carbonyl Difluoride ND 15.4 2.22 ug/Sample 11/29/19 10:45 12/06/19 14:28 1ChlorobenzeneND 15.4 3.32 ug/Sample 11/29/19 10:45 12/06/19 14:28 1ChlorodibromomethaneND 30.8 6.77 ug/Sample 11/29/19 10:45 12/06/19 14:28 1ChloroethaneND 15.4 1.78 ug/Sample 11/29/19 10:45 12/06/19 14:28 1ChloroformND 30.8 12.8 ug/Sample 11/29/19 10:45 12/06/19 14:28 1ChloromethaneND 15.4 1.23 ug/Sample 11/29/19 10:45 12/06/19 14:28 1cis-1,2-Dichloroethene ND 15.4 2.65 ug/Sample 11/29/19 10:45 12/06/19 14:28 1cis-1,3-Dichloropropene ND 15.4 1.48 ug/Sample 11/29/19 10:45 12/06/19 14:28 1DibromomethaneND 30.8 5.42 ug/Sample 11/29/19 10:45 12/06/19 14:28 1DichlorodifluoromethaneND 15.4 2.52 ug/Sample 11/29/19 10:45 12/06/19 14:28 1EthylbenzeneND 15.4 15.4 ug/Sample 11/29/19 10:45 12/06/19 14:28 1Heptafluoropropyl 1,2,2,2-tetrafluoroethyl ether ND 15.4 4.06 ug/Sample 11/29/19 10:45 12/06/19 14:28 1HexachlorobutadieneND 14.8 14.8 ug/Sample 11/29/19 10:45 12/06/19 14:28 1HFPO dimer, methyl ester as HFPO-DA ND 15.4 2.15 ug/Sample 11/29/19 10:45 12/06/19 14:28 1IsopropylbenzeneND 30.8 2.52 ug/Sample 11/29/19 10:45 12/06/19 14:28 1m,p-Xylene ND 15.4 9.85 ug/Sample 11/29/19 10:45 12/06/19 14:28 1Methylene Chloride 10.1 J B 15.4 7.39 ug/Sample 11/29/19 10:45 12/06/19 14:28 1NaphthaleneND 15.4 3.94 ug/Sample 11/29/19 10:45 12/06/19 14:28 1n-Butylbenzene ND 15.4 3.32 ug/Sample 11/29/19 10:45 12/06/19 14:28 1n-Propylbenzene ND 15.4 1.60 ug/Sample 11/29/19 10:45 12/06/19 14:28 1o-Xylene ND 15.4 3.02 ug/Sample 11/29/19 10:45 12/06/19 14:28 1sec-Butylbenzene ND 15.4 3.32 ug/Sample 11/29/19 10:45 12/06/19 14:28 1StyreneND 15.4 2.71 ug/Sample 11/29/19 10:45 12/06/19 14:28 1tert-Butylbenzene ND 15.4 2.03 ug/Sample 11/29/19 10:45 12/06/19 14:28 1TetrachloroetheneND 15.4 2.83 ug/Sample 11/29/19 10:45 12/06/19 14:28 1TolueneND 15.4 1.60 ug/Sample 11/29/19 10:45 12/06/19 14:28 1trans-1,2-Dichloroethene ND Eurofins TestAmerica, Knoxville 12/23/2019Page 31 of 820155 Client Sample Results Job ID: 140-17462-1Client: Chemours Company FC, LLC The Project/Site: VEN MM-18 Field QC Lab Sample ID: 140-17462-8Client Sample ID: A-5787 QC MEOH TB Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) RL MDL trans-1,3-Dichloropropene ND 15.4 5.42 ug/Sample 11/29/19 10:45 12/06/19 14:28 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 15.4 1.11 ug/Sample 11/29/19 10:45 12/06/19 14:28 1TrichloroetheneND 30.8 2.95 ug/Sample 11/29/19 10:45 12/06/19 14:28 1TrichlorofluoromethaneND * 30.8 7.39 ug/Sample 11/29/19 10:45 12/06/19 14:28 1Vinyl chloride ND Cyclohexane 41.7 T J N ug/Sample 4.42 110-82-7 11/29/19 10:45 12/06/19 14:28 1 Tentatively Identified Compound Dil FacAnalyzedPreparedUnit DQualifierEst. Result CAS No.RT 1,2-Dichloroethane-d4 (Surr)119 70 -160 11/29/19 10:45 12/06/19 14:28 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery 4-Bromofluorobenzene (Surr)111 11/29/19 10:45 12/06/19 14:28 157-152 Dibromofluoromethane (Surr)105 11/29/19 10:45 12/06/19 14:28 162-134 Toluene-d8 (Surr)96 11/29/19 10:45 12/06/19 14:28 171-139 Method: 9056 - Anions, Ion Chromatography RL MDL Total Fluorine 9720 3280 1640 ug/Sample 11/29/19 10:45 12/14/19 00:18 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1350 616 ug/Sample 11/29/19 10:45 12/19/19 09:19 20Hydrogen Fluoride ND Method: 8321A - PFOA and PFOS RL MDL HFPO-DA ND 0.0250 0.00500 ug/Sample 12/04/19 10:05 12/08/19 11:03 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 13C3 HFPO-DA 125 50 -200 12/04/19 10:05 12/08/19 11:03 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery General Chemistry RL MDL pH 4.00 HF SU 12/13/19 15:03 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Lab Sample ID: 140-17462-9Client Sample ID: A-5788 QC MEOH PB Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) RL MDL 1,1,1,2-Tetrachloroethane ND 18.1 2.38 ug/Sample 11/29/19 10:45 12/06/19 14:53 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 36.1 3.61 ug/Sample 11/29/19 10:45 12/06/19 14:53 11,1,1,3,3-Pentafluorobutane ND 18.1 2.60 ug/Sample 11/29/19 10:45 12/06/19 14:53 11,1,1-Trichloroethane ND 36.1 7.15 ug/Sample 11/29/19 10:45 12/06/19 14:53 11,1,1-Trifluoro-2,2-dichloroethane ND 36.1 3.61 ug/Sample 11/29/19 10:45 12/06/19 14:53 11,1,1-Trifluoroethane ND 18.1 3.47 ug/Sample 11/29/19 10:45 12/06/19 14:53 11,1,2,2-Tetrachloroethane ND 36.1 2.02 ug/Sample 11/29/19 10:45 12/06/19 14:53 11,1,2-Trichloro-1,2,2-trifluoroethane ND 36.1 3.61 ug/Sample 11/29/19 10:45 12/06/19 14:53 11,1,2-trichloro-1-fluoroethane ND 18.1 1.88 ug/Sample 11/29/19 10:45 12/06/19 14:53 11,1,2-Trichloroethane ND 36.1 18.1 ug/Sample 11/29/19 10:45 12/06/19 14:53 11,1-Dichloro-1-fluoroethane ND 36.1 3.61 ug/Sample 11/29/19 10:45 12/06/19 14:53 11,1-dichloro-2,2-difluoroethane ND 36.1 3.61 ug/Sample 11/29/19 10:45 12/06/19 14:53 11,1-dichloro-2,2-difluoroethene ND 18.1 2.17 ug/Sample 11/29/19 10:45 12/06/19 14:53 11,1-Dichloroethane ND Eurofins TestAmerica, Knoxville 12/23/2019Page 32 of 820156 Client Sample Results Job ID: 140-17462-1Client: Chemours Company FC, LLC The Project/Site: VEN MM-18 Field QC Lab Sample ID: 140-17462-9Client Sample ID: A-5788 QC MEOH PB Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) RL MDL 1,1-Dichloroethene ND 18.1 2.67 ug/Sample 11/29/19 10:45 12/06/19 14:53 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 18.1 1.95 ug/Sample 11/29/19 10:45 12/06/19 14:53 11,1-Dichloropropene ND 361 361 ug/Sample 11/29/19 10:45 12/06/19 14:53 11,1-Difluoroethene ND 36.1 3.61 ug/Sample 11/29/19 10:45 12/06/19 14:53 11,2,2-trichloro-1,1-difluoroethane ND 18.1 5.78 ug/Sample 11/29/19 10:45 12/06/19 14:53 11,2,3-Trichlorobenzene ND 18.1 4.48 ug/Sample 11/29/19 10:45 12/06/19 14:53 11,2,3-Trichloropropane ND 18.1 6.07 ug/Sample 11/29/19 10:45 12/06/19 14:53 11,2,4-Trichlorobenzene ND 18.1 3.75 ug/Sample 11/29/19 10:45 12/06/19 14:53 11,2,4-Trimethylbenzene ND 36.1 6.35 ug/Sample 11/29/19 10:45 12/06/19 14:53 11,2-Dibromo-3-Chloropropane ND 18.1 2.38 ug/Sample 11/29/19 10:45 12/06/19 14:53 11,2-Dibromoethane (EDB)ND 36.1 3.61 ug/Sample 11/29/19 10:45 12/06/19 14:53 11,2-dichloro-1,1-difluoroethane ND 18.1 3.18 ug/Sample 11/29/19 10:45 12/06/19 14:53 11,2-Dichlorobenzene ND 18.1 3.03 ug/Sample 11/29/19 10:45 12/06/19 14:53 11,2-Dichloroethane ND 18.1 1.81 ug/Sample 11/29/19 10:45 12/06/19 14:53 11,2-Dichloropropane ND 18.1 3.75 ug/Sample 11/29/19 10:45 12/06/19 14:53 11,3,5-Trimethylbenzene ND 18.1 3.11 ug/Sample 11/29/19 10:45 12/06/19 14:53 11,3-Dichlorobenzene ND 18.1 2.02 ug/Sample 11/29/19 10:45 12/06/19 14:53 11,3-Dichloropropane ND 18.1 3.61 ug/Sample 11/29/19 10:45 12/06/19 14:53 11,4-Dichlorobenzene ND 36.1 3.68 ug/Sample 11/29/19 10:45 12/06/19 14:53 11-Chloro-1,1-difluoroethane ND 36.1 3.61 ug/Sample 11/29/19 10:45 12/06/19 14:53 12,2-dichloro-1,1-difluoroethylmethyl ether ND 18.1 5.27 ug/Sample 11/29/19 10:45 12/06/19 14:53 12,2-Dichloropropane ND 72.2 11.6 ug/Sample 11/29/19 10:45 12/06/19 14:53 12-Butanone (MEK)ND 36.1 5.34 ug/Sample 11/29/19 10:45 12/06/19 14:53 12-chloro-1,1,1,4,4,4-hexafluoro-2-but ene ND 36.1 3.61 ug/Sample 11/29/19 10:45 12/06/19 14:53 12-Chloro-1,1,1-Trifluoroethane ND 18.1 3.39 ug/Sample 11/29/19 10:45 12/06/19 14:53 12-Chlorotoluene ND 72.2 16.6 ug/Sample 11/29/19 10:45 12/06/19 14:53 12-Hexanone ND 15.8 15.8 ug/Sample 11/29/19 10:45 12/06/19 14:53 12-MTP as HFPO ND 18.1 3.75 ug/Sample 11/29/19 10:45 12/06/19 14:53 14-Chlorotoluene ND 18.1 4.84 ug/Sample 11/29/19 10:45 12/06/19 14:53 14-Isopropyltoluene ND 72.2 11.6 ug/Sample 11/29/19 10:45 12/06/19 14:53 14-Methyl-2-pentanone (MIBK)ND 72.2 42.6 ug/Sample 11/29/19 10:45 12/06/19 14:53 1AcetoneND 18.1 3.47 ug/Sample 11/29/19 10:45 12/06/19 14:53 1BenzeneND 18.1 2.53 ug/Sample 11/29/19 10:45 12/06/19 14:53 1BromobenzeneND 18.1 4.04 ug/Sample 11/29/19 10:45 12/06/19 14:53 1BromochloromethaneND 18.1 3.11 ug/Sample 11/29/19 10:45 12/06/19 14:53 1BromodichloromethaneND 18.1 5.49 ug/Sample 11/29/19 10:45 12/06/19 14:53 1BromoformND 36.1 20.9 ug/Sample 11/29/19 10:45 12/06/19 14:53 1BromomethaneND 18.1 4.48 ug/Sample 11/29/19 10:45 12/06/19 14:53 1Carbon disulfide ND 18.1 2.38 ug/Sample 11/29/19 10:45 12/06/19 14:53 1Carbon tetrachloride ND 52.9 52.9 ug/Sample 11/29/19 10:45 12/06/19 14:53 1Carbonyl Difluoride ND 18.1 2.60 ug/Sample 11/29/19 10:45 12/06/19 14:53 1ChlorobenzeneND 18.1 3.90 ug/Sample 11/29/19 10:45 12/06/19 14:53 1ChlorodibromomethaneND 36.1 7.94 ug/Sample 11/29/19 10:45 12/06/19 14:53 1ChloroethaneND 18.1 2.09 ug/Sample 11/29/19 10:45 12/06/19 14:53 1ChloroformND 36.1 15.0 ug/Sample 11/29/19 10:45 12/06/19 14:53 1ChloromethaneND 18.1 1.44 ug/Sample 11/29/19 10:45 12/06/19 14:53 1cis-1,2-Dichloroethene ND 18.1 3.11 ug/Sample 11/29/19 10:45 12/06/19 14:53 1cis-1,3-Dichloropropene ND Eurofins TestAmerica, Knoxville 12/23/2019Page 33 of 820157 Client Sample Results Job ID: 140-17462-1Client: Chemours Company FC, LLC The Project/Site: VEN MM-18 Field QC Lab Sample ID: 140-17462-9Client Sample ID: A-5788 QC MEOH PB Matrix: AirDate Collected: 11/22/19 00:00 Date Received: 11/25/19 08:00 Sample Container: Plastic 250ml - unpreserved Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) RL MDL Dibromomethane ND 18.1 1.73 ug/Sample 11/29/19 10:45 12/06/19 14:53 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 36.1 6.35 ug/Sample 11/29/19 10:45 12/06/19 14:53 1DichlorodifluoromethaneND 18.1 2.96 ug/Sample 11/29/19 10:45 12/06/19 14:53 1EthylbenzeneND 18.1 18.1 ug/Sample 11/29/19 10:45 12/06/19 14:53 1Heptafluoropropyl 1,2,2,2-tetrafluoroethyl ether ND 18.1 4.77 ug/Sample 11/29/19 10:45 12/06/19 14:53 1HexachlorobutadieneND 17.4 17.4 ug/Sample 11/29/19 10:45 12/06/19 14:53 1HFPO dimer, methyl ester as HFPO-DA ND 18.1 2.53 ug/Sample 11/29/19 10:45 12/06/19 14:53 1IsopropylbenzeneND 36.1 2.96 ug/Sample 11/29/19 10:45 12/06/19 14:53 1m,p-Xylene ND 18.1 11.6 ug/Sample 11/29/19 10:45 12/06/19 14:53 1Methylene Chloride 13.6 J B 18.1 8.67 ug/Sample 11/29/19 10:45 12/06/19 14:53 1NaphthaleneND 18.1 4.62 ug/Sample 11/29/19 10:45 12/06/19 14:53 1n-Butylbenzene ND 18.1 3.90 ug/Sample 11/29/19 10:45 12/06/19 14:53 1n-Propylbenzene ND 18.1 1.88 ug/Sample 11/29/19 10:45 12/06/19 14:53 1o-Xylene ND 18.1 3.54 ug/Sample 11/29/19 10:45 12/06/19 14:53 1sec-Butylbenzene ND 18.1 3.90 ug/Sample 11/29/19 10:45 12/06/19 14:53 1StyreneND 18.1 3.18 ug/Sample 11/29/19 10:45 12/06/19 14:53 1tert-Butylbenzene ND 18.1 2.38 ug/Sample 11/29/19 10:45 12/06/19 14:53 1TetrachloroetheneND 18.1 3.32 ug/Sample 11/29/19 10:45 12/06/19 14:53 1TolueneND 18.1 1.88 ug/Sample 11/29/19 10:45 12/06/19 14:53 1trans-1,2-Dichloroethene ND 18.1 6.35 ug/Sample 11/29/19 10:45 12/06/19 14:53 1trans-1,3-Dichloropropene ND 18.1 1.30 ug/Sample 11/29/19 10:45 12/06/19 14:53 1TrichloroetheneND 36.1 3.47 ug/Sample 11/29/19 10:45 12/06/19 14:53 1TrichlorofluoromethaneND * 36.1 8.67 ug/Sample 11/29/19 10:45 12/06/19 14:53 1Vinyl chloride ND Cyclohexane 28.0 T J N ug/Sample 4.42 110-82-7 11/29/19 10:45 12/06/19 14:53 1 Tentatively Identified Compound Dil FacAnalyzedPreparedUnit DQualifierEst. Result CAS No.RT 1,2-Dichloroethane-d4 (Surr)117 70 -160 11/29/19 10:45 12/06/19 14:53 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery 4-Bromofluorobenzene (Surr)108 11/29/19 10:45 12/06/19 14:53 157-152 Dibromofluoromethane (Surr)104 11/29/19 10:45 12/06/19 14:53 162-134 Toluene-d8 (Surr)96 11/29/19 10:45 12/06/19 14:53 171-139 Method: 9056 - Anions, Ion Chromatography RL MDL Total Fluorine 2450 J 3850 1930 ug/Sample 11/29/19 10:45 12/14/19 00:39 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1590 722 ug/Sample 11/29/19 10:45 12/19/19 09:40 20Hydrogen Fluoride ND Method: 8321A - PFOA and PFOS RL MDL HFPO-DA ND 0.0250 0.00500 ug/Sample 12/04/19 10:05 12/08/19 11:06 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 13C3 HFPO-DA 131 50 -200 12/04/19 10:05 12/08/19 11:06 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery General Chemistry RL MDL pH 4.00 HF SU 12/13/19 15:03 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Eurofins TestAmerica, Knoxville 12/23/2019Page 34 of 820158 Default Detection Limits Client: Chemours Company FC, LLC The Job ID: 140-17462-1 Project/Site: VEN MM-18 Field QC Method: 8260B - Volatile Organic Compounds (GC/MS) Prep: MeOH Prep 2.501,1,1,2-Tetrachloroethane ug/Sample Analyte UnitsMDLRL 0.330 5.001,1,1,3,3-Pentafluorobutane ug/Sample0.500 2.501,1,1-Trichloroethane ug/Sample0.360 5.001,1,1-Trifluoro-2,2-dichloroethane ug/Sample0.990 5.001,1,1-Trifluoroethane ug/Sample0.500 2.501,1,2,2-Tetrachloroethane ug/Sample0.480 5.001,1,2-Trichloro-1,2,2-trifluoroethane ug/Sample0.280 5.001,1,2-trichloro-1-fluoroethane ug/Sample0.500 2.501,1,2-Trichloroethane ug/Sample0.260 5.001,1-Dichloro-1-fluoroethane ug/Sample2.50 5.001,1-dichloro-2,2-difluoroethane ug/Sample0.500 5.001,1-dichloro-2,2-difluoroethene ug/Sample0.500 2.501,1-Dichloroethane ug/Sample0.300 2.501,1-Dichloroethene ug/Sample0.370 2.501,1-Dichloropropene ug/Sample0.270 50.01,1-Difluoroethene ug/Sample50.0 5.001,2,2-trichloro-1,1-difluoroethane ug/Sample0.500 2.501,2,3-Trichlorobenzene ug/Sample0.800 2.501,2,3-Trichloropropane ug/Sample0.620 2.501,2,4-Trichlorobenzene ug/Sample0.840 2.501,2,4-Trimethylbenzene ug/Sample0.520 5.001,2-Dibromo-3-Chloropropane ug/Sample0.880 2.501,2-Dibromoethane (EDB)ug/Sample0.330 5.001,2-dichloro-1,1-difluoroethane ug/Sample0.500 2.501,2-Dichlorobenzene ug/Sample0.440 2.501,2-Dichloroethane ug/Sample0.420 2.501,2-Dichloropropane ug/Sample0.250 2.501,3,5-Trimethylbenzene ug/Sample0.520 2.501,3-Dichlorobenzene ug/Sample0.430 2.501,3-Dichloropropane ug/Sample0.280 2.501,4-Dichlorobenzene ug/Sample0.500 5.001-Chloro-1,1-difluoroethane ug/Sample0.510 5.002,2-dichloro-1,1-difluoroethylmethyl ether ug/Sample0.500 2.502,2-Dichloropropane ug/Sample0.730 10.02-Butanone (MEK)ug/Sample1.60 5.002-chloro-1,1,1,4,4,4-hexafluoro-2-butene ug/Sample0.740 5.002-Chloro-1,1,1-Trifluoroethane ug/Sample0.500 2.502-Chlorotoluene ug/Sample0.470 10.02-Hexanone ug/Sample2.30 2.502-MTP as HFPO ug/Sample2.50 2.504-Chlorotoluene ug/Sample0.520 2.504-Isopropyltoluene ug/Sample0.670 10.04-Methyl-2-pentanone (MIBK)ug/Sample1.60 10.0Acetone ug/Sample5.90 2.50Benzene ug/Sample0.480 2.50Bromobenzene ug/Sample0.350 2.50Bromochloromethane ug/Sample0.560 2.50Bromodichloromethane ug/Sample0.430 2.50Bromoform ug/Sample0.760 5.00Bromomethane ug/Sample2.90 2.50Carbon disulfide ug/Sample0.620 2.50Carbon tetrachloride ug/Sample0.330 Eurofins TestAmerica, Knoxville 12/23/2019Page 35 of 820159 Default Detection Limits Client: Chemours Company FC, LLC The Job ID: 140-17462-1 Project/Site: VEN MM-18 Field QC Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Prep: MeOH Prep 10.0Carbonyl Difluoride ug/Sample Analyte UnitsMDLRL 10.0 2.50Chlorobenzene ug/Sample0.360 2.50Chlorodibromomethane ug/Sample0.540 5.00Chloroethane ug/Sample1.10 2.50Chloroform ug/Sample0.290 5.00Chloromethane ug/Sample2.08 2.50cis-1,2-Dichloroethene ug/Sample0.200 2.50cis-1,3-Dichloropropene ug/Sample0.430 2.50Dibromomethane ug/Sample0.240 5.00Dichlorodifluoromethane ug/Sample0.880 2.50Ethylbenzene ug/Sample0.410 2.50Heptafluoropropyl 1,2,2,2-tetrafluoroethyl ether ug/Sample2.50 2.50Hexachlorobutadiene ug/Sample0.660 2.50HFPO dimer, methyl ester as HFPO-DA ug/Sample2.50 2.50Isopropylbenzene ug/Sample0.350 5.00m,p-Xylene ug/Sample0.410 2.50Methylene Chloride ug/Sample1.60 2.50Naphthalene ug/Sample1.20 2.50n-Butylbenzene ug/Sample0.640 2.50n-Propylbenzene ug/Sample0.540 2.50o-Xylene ug/Sample0.260 2.50sec-Butylbenzene ug/Sample0.490 2.50Styrene ug/Sample0.540 2.50tert-Butylbenzene ug/Sample0.440 2.50Tetrachloroethene ug/Sample0.330 2.50Toluene ug/Sample0.460 2.50trans-1,2-Dichloroethene ug/Sample0.260 2.50trans-1,3-Dichloropropene ug/Sample0.880 2.50Trichloroethene ug/Sample0.180 5.00Trichlorofluoromethane ug/Sample0.480 5.00Vinyl chloride ug/Sample1.20 Method: 9056 - Anions, Ion Chromatography Prep: MeOH Prep 11.0Hydrogen Fluoride ug/Sample Analyte UnitsMDLRL 5.00 1000Total Fluorine ug/Sample500 Method: 8321A - PFOA and PFOS Prep: None 0.100HFPO-DA ug/Sample Analyte UnitsMDLRL 0.0200 Eurofins TestAmerica, Knoxville 12/23/2019Page 36 of 820160 IASDATA\CHEMOURS\15418.002.018\DIVISION REPORT 11 2019-AMD 1/21/2020 APPENDIX D SAMPLE CALCULATIONS 161 12/31/201911:01 AM 112219 Div Stack M0010 EXAMPLE CALCULATIONS FOR VOLUMETRIC FLOW AND MOISTURE AND ISOKINETICS Client: Chemours Facility: Fayetteville, NC Test Number: Run 1 Test Date: 11/22/19 Test Location: Division Stack Test Period: 0826-1022 1. Volume of dry gas sampled at standard conditions (68 deg F, 29.92 in. Hg), dscf. delta H 17.64 x Y x Vm x ( Pb + ------------ ) 13.6 Vm(std)=-------------------------------------------- (Tm + 460) 1.403 17.64 x 0.9972 x 63.136 x ( 30.02 + --------------------- ) 13.6 Vm(std)=------------------------------------------------------------ = 64.704 57.04 + 460 Where: Vm(std)=Volume of gas sample measured by the dry gas meter, corrected to standard conditions, dscf. Vm =Volume of gas sample measured by the dry gas meter at meter conditions, dcf. Pb =Barometric Pressure, in Hg. delt H =Average pressure drop across the orifice meter, in H2O Tm =Average dry gas meter temperature , deg F. Y =Dry gas meter calibration factor. 17.64 =Factor that includes ratio of standard temperature (528 deg R) to standard pressure (29.92 in. Hg), deg R/in. Hg. 13.6 =Specific gravity of mercury. 2. Volume of water vapor in the gas sample corrected to standard conditions, scf. Vw(std)=(0.04707 x Vwc) + (0.04715 x Wwsg) Vw(std)=( 0.04707 x 10.0 ) + ( 0.04715 x 24.4 ) = 1.62 Where: Vw(std)=Volume of water vapor in the gas sample corrected to standard conditions, scf. Vwc =Volume of liquid condensed in impingers, ml. Wwsg =Weight of water vapor collected in silica gel, g. 0.04707 =Factor which includes the density of water (0.002201 lb/ml), the molecular weight of water (18.0 lb/lb-mole), the ideal gas constant 21.85 (in. Hg) (ft3)/lb-mole)(deg R); absolute temperature at standard conditions (528 deg R), absolute pressure at standard conditions (29.92 in. Hg), ft3/ml. 0.04715 =Factor which includes the molecular weight of water (18.0 lb/lb-mole), the ideal gas constant 21.85 (in. Hg) (ft3)/lb-mole)(deg R); absolute temperature at standard conditions (528 deg R), absolute pressure at standard conditions (29.92 in. Hg), and 453.6 g/lb, ft3/g. 162 12/31/201911:01 AM 112219 Div Stack M0010 3. Moisture content Vw(std) bws =------------------------- Vw(std) + Vm(std) 1.62 bws =------------------------- = 0.024 1.62 + 64.704 Where: bws =Proportion of water vapor, by volume, in the gas stream, dimensionless. 4. Mole fraction of dry gas. Md =1 - bws Md =1 - 0.024 = 0.976 Where: Md =Mole fraction of dry gas, dimensionless. 5. Dry molecular weight of gas stream, lb/lb-mole. MWd =( 0.440 x % CO2 ) + ( 0.320 x % O2 ) + ( 0.280 x (% N2 + % CO) ) MWd =( 0.440 x 0.0 ) + ( 0.320 x 20.9 ) + (0.280 x ( 79.1 + 0.00 )) MWd =28.84 Where: MWd =Dry molecular weight , lb/lb-mole. % CO2 =Percent carbon dioxide by volume, dry basis. % O2 =Percent oxygen by volume, dry basis. % N2 =Percent nitrogen by volume, dry basis. % CO =Percent carbon monoxide by volume, dry basis. 0.440 =Molecular weight of carbon dioxide, divided by 100. 0.320 =Molecular weight of oxygen, divided by 100. 0.280 =Molecular weight of nitrogen or carbon monoxide, divided by 100. 6. Actual molecular weight of gas stream (wet basis), lb/lb-mole. MWs =( MWd x Md ) + ( 18 x ( 1 - Md )) MWs =( 28.84 x 0.976 ) +( 18 ( 1 - 0.976 )) = 28.57 Where: MWs =Molecular weight of wet gas, lb/lb-mole. 18 =Molecular weight of water, lb/lb-mole. 163 12/31/201911:01 AM 112219 Div Stack M0010 7. Average velocity of gas stream at actual conditions, ft/sec. Ts (avg) Vs =85.49 x Cp x ((delt p)1/2)avg x ( ---------------- )1/2 Ps x MWs 532 Vs =85.49 x 0.84 x 1.45039 x ( -------------------- )^1/2 = 82.0 29.99 x 28.57 Where: Vs =Average gas stream velocity, ft/sec. (lb/lb-mole)(in. Hg)1/2 85.49 =Pitot tube constant, ft/sec x ------------------------------------ (deg R)(in H2O) Cp =Pitot tube coefficient, dimensionless. Ts =Absolute gas stream temperature, deg R = Ts, deg F + 460. P(static) Ps =Absolute gas stack pressure, in. Hg. = Pb + -------------- 13.6 delt p =Velocity head of stack, in. H2O. 8. Average gas stream volumetric flow rate at actual conditions, wacf/min. Qs(act)=60 x Vs x As Qs(act)=60 x 82.0 x 7.07 = 34799 Where: Qs(act)=Volumetric flow rate of wet stack gas at actual conditions, wacf/min. As =Cross-sectional area of stack, ft2. 60 =Conversion factor from seconds to minutes. 9. Average gas stream dry volumetric flow rate at standard conditions, dscf/min. Ps Qs(std)= 17.64 x Md x ----- x Qs(act) Ts 29.99 Qs(std)=17.64 x 0.976 x -------------------- x 34799 531.6 Qs(std)=33787 Where: Qs(std)=Volumetric flow rate of dry stack gas at standard conditions, dscf/min. 164 12/31/201911:01 AM 112219 Div Stack M0010 10. Isokinetic variation calculated from intermediate values, percent. 17.327 x Ts x Vm(std) I =----------------------------------- Vs x O x Ps x Md x (Dn)2 17.327 x 532 x 64.704 I =-------------------------------------------------- = 101.0 82.0 x 96 x 29.99 x 0.976 x (0.160)^2 Where: I =Percent of isokinetic sampling. O =Total sampling time, minutes. Dn =Diameter of nozzle, inches. 17.327 =Factor which includes standard temperature (528 deg R), standard pressure (29.92 in. Hg), the formula for calculating area of circle D2/4, conversion of square feet to square inches (144), conversion of seconds to minutes (60), and conversion to percent (100), (in. Hg)(in2)(min) (deg R)(ft2)(sec) 165 1/3/202012:18 PM 112219 Div Stack M0010 SAMPLE CALCULATIONS FOR HFPO DIMER ACID (METHOD 0010) Client: Chemours Plant: Fayetteville, NC Test Number: Run 1 Test Date: 11/22/19 Test Location: Divison Stack Test Period: 0826-1022 1. HFPO Dimer Acid concentration, lbs/dscf. W x 2.2046 x 10-9 Conc1 =------------------------------ Vm(std) 22.3 x 2.2046 x 10-9 Conc1 =------------------------------ 64.704 Conc1 =7.60E-10 Where: W =Weight of HFPO Dimer Acid collected in sample in ug. Conc1 =Division Stack HFPO Dimer Acid concentration, lbs/dscf. 2.2046x10-9 =Conversion factor from ug to lbs. 2. HFPO Dimer Acid concentration, ug/dscm. Conc2 =W / ( Vm(std) x 0.02832) Conc2 =22.3 / ( 64.704 x 0.02832 ) Conc2 =1.22E+01 Where: Conc2 =Division Stack HFPO Dimer Acid concentration, ug/dscm. 0.02832 =Conversion factor from cubic feet to cubic meters. 166 1/3/202012:18 PM 112219 Div Stack M0010 3. HFPO Dimer Acid mass emission rate, lbs/hr. MR1(Outlet)=Conc1 x Qs(std) x 60 min/hr MR1(Outlet)=7.60E-10 x 33787 x 60 MR1(Outlet)=1.54E-03 Where: MR1(Outlet)=Division Stack HFPO Dimer Acid mass emission rate, lbs/hr. 4. HFPO Dimer Acid mass emission rate, g/sec. MR2(Outlet)=PMR1 x 453.59 / 3600 MR2(Outlet)=1.54E-03 x 453.59 /3600 MR2(Outlet)=1.94E-04 Where: MR2(Outlet)=Division Stack HFPO Dimer Acid mass emission rate, g/sec. 453.6 =Conversion factor from pounds to grams. 3600 =Conversion factor from hours to seconds. 167 IASDATA\CHEMOURS\15418.002.018\DIVISION REPORT 11 2019-AMD 1/21/2020 APPENDIX E EQUIPMENT CALIBRATION RECORDS 168 P-694 all in one.MOD Pitot Tube Identification Number: Inspection Date 2/19/19 Individual Conducting Inspection Distance to A Plane (PA) - inches 0.46 PASS Distance to B Plane (PB) - inches 0.46 PASS Pitot OD (Dt) - inches 0.375 1.05 Dt < P < 1.5 Dt PA must Equal PB Q1 and Q2 must be < 10o B1 or B2 must be < 5o Z must be < 0.125 inches W must be < 0.03125 inches X must be > 0.75 inches Thermocouple meets the Distance Criteria in the adjacent figure Impact Pressure Opening Plane is above the Nozzle Entry Plane NO NA NO NA PASS PASS PASS Distance between Sample Nozzle and Pitot (X) - inches Thermocouple meets the Distance Criteria in the adjacent figure YES YES PASS NO YES NA 0 0 Angle of B1 from vertical A Tube- degrees (absolute)0 0 0.8 Horizontal offset between A and B Tubes (Z) - inches Vertical offset between A and B Tubes (W) - inches 0.004 0.015 PASS/FAIL Angle of B1 from vertical B Tube- degrees (absolute) PASS PASS PASS P-694 ks Angle of Q1 from vertical A Tube- degrees (absolute) Angle of Q2 from vertical B Tube- degrees (absolute) Type S Pitot Tube Inspection Data Form Are Open Faces Aligned Perpendicular to the Tube Axis YES NO PASS If all Criteria PASS Cp is equal to 0.84 Sample Probe Type S Pitot Tube Temperature Sensor Dt 2 inch Sample Probe Temperature Sensor Dt Type S Pitot Tube 3 inch 3/4 inch A B Face Opening Planes A B A B Q1 Q1 Q2 B B B A A A FlowFlow B1(+)B1(-) B2(+ or -) B1(+ or -) B-Side Plane AB PA PB A-Side PlaneDt X Sampling D Impact Pressure Opening Plane Nozzle Entry Plane W B A B A Z 169 Long Cal Box_30 2-21-19 Calibrator MDW Meter Box Number 30 Ambient Temp 72 Date 21-Feb-19 Wet Test Meter Number P-2952 Temp Reference Source Dry Gas Meter Number 17485131 Setting in H20 (∆H) ft3 (Vw) ft3 (Vd) oF (Tw) Outlet, oF (Tdo) Inlet, oF (Tdi) Average, oF (Td) Time, min (O)Y ∆H 905.750 70.00 70.00 910.724 70.00 70.00 4.974 70.00 70.00 911.701 71.00 71.00 916.685 71.00 71.00 4.984 71.00 71.00 917.680 72.00 72.00 927.695 74.00 74.00 10.015 73.00 73.00 928.690 74.00 74.00938.780 75.00 75.00 10.090 74.50 74.50 939.800 76.00 76.00 949.930 77.00 77.00 10.130 76.50 76.50 Average 0.9972 1.8715 Vw - Gas Volume passing through the wet test meter 0 - Time of calibration run Vd - Gas Volume passing through the dry gas meter Pb - Barometric Pressure Tw - Temp of gas in the wet test meter Tdi - Temp of the inlet gas of the dry gas meter Tdo - Temp of the outlet gas of the dry gas meter Td - Average temp of the gas in the dry gas meter 1 2 3 4 5 6 32 32 32 32 32 32.0 0.0% 212 213 213 212 212 212.4 -0.1% 932 933 933 932 932 932.4 0.0% 1832 1832 1832 1832 1832 1832.0 0.0% 1 - Channel Temps must agree with +/- 5oF or 3oC 2 - Acceptable Temperature Difference less than 1.5 % 2.0 10.0 1.850112.8 1.0002 Dry Gas Meter 70.0 0.5 70.0 1.0 Long Cal and Temperature Cal Datasheet for Standard Dry Gas Meter Console Orifice Manometer Wet Test Meter Dry gas Meter Gas Volume 1.82245.0 70.0 70.0 9.0 Y - Ratio of accuracy of wet test meter to dry gas meter ∆H - Pressure differential across orifice 3.0 10.0 70.0 Temperatures Wet Test Meter 68.0 1.5 10.0 1.0007 5.0 70.0 10.7 0.9910 72.5 74.5 1.8894 1.885113.0 0.9946 15.0 0.9995 932 1832 Reference Temperature Select Temperature oC oF 212 32 Average Temperature Reading Thermocouple Simulator (Accuracy +/- 1oF) Temp Difference 2 (%) Temperature Reading from Individual Thermocouple Input 1 Channel Number 1.9103 Calibration Results Baro Press, in Hg ( Pb)29.87 76.0 ( )( ) ( ) ( ) 2 Vw O460tw 460tdPb H0317.0H 460tw6.13 HPbVd )460td(PbVwY   ∗+∗   +∗ ∆∗=∆ +∗  ∆+∗ +∗∗= ( )()( )()( )    + +−+=460FTempferenceRe 460FTempTest460FTempferenceReDiffTempo oo 170 Y Factor Calibration Check Calculation MODIFIED METHOD 0010 TEST TRAIN DIVISION STACK METER BOX NO. 30 11/22/2019 Run 1 Run 2MWd = Dry molecular weight source gas, lb/lb-mole. 0.32 = Molecular weight of oxygen, divided by 100. 0.44 = Molecular weight of carbon dioxide, divided by 100. 0.28 = Molecular weight of nitrogen or carbon monoxide, divided by 100. % CO2 = Percent carbon dioxide by volume, dry basis.0.0 0.0 % O2 = Percent oxygen by volume, dry basis.20.9 20.9 MWd = ( 0.32 * O2 ) + ( 0.44 * CO2 ) + ( 0.28 * ( 100 - ( CO2 + O2 ))) MWd = ( 0.32 * 20.9 ) + ( 0.44 * 0 ) + ( 0.28 * ( 100 - ( 0 + 20.9 ))) MWd = ( 6.69 ) + ( 0.00 ) + ( 22.15 ) MWd = 28.84 28.84 Tma =Source Temperature, absolute(oR) Tm = Average dry gas meter temperature , deg F.57.0 65.2 Tma = Ts + 460 Tma = 57.04 + 460 Tma = 517.04 525.19 Ps = Absolute meter pressure, inches Hg. 13.60 = Specific gravity of mercury. delta H = Avg pressure drop across the orifice meter during sampling, in H2O 1.40 1.00 Pb = Barometric Pressure, in Hg.30.02 30.02 Pm = Pb + (delta H / 13.6) Pm = 30.02 + ( 1.4025 / 13.6) Pm = 30.12 30.09 Yqa = dry gas meter calibration check value, dimensionless. 0.03 = (29.92/528)(0.75)2 (in. Hg/°/R) cfm2. 29.00 = dry molecular weight of air, lb/lb-mole. Vm = Volume of gas sample measured by the dry gas meter at meter conditions, dcf.63.136 47.088 Y = Dry gas meter calibration factor (based on full calibration)0.9972 0.9972 Delta H@ = Dry Gas meter orifice calibration coefficient, in. H2O.1.8715 1.8715 avg SQRT Delta H =Avg SQRT press. drop across the orifice meter during sampling , in. H2O 1.1783 0.9984 O = Total sampling time, minutes.96 84 Yqa = (O / Vm ) * SQRT ( 0.0319 * Tma * 29 ) / ( Delta H@ * Pm * MWd ) * avg SQRT Delta H Yqa = ( 96.00 / 63.14 ) * SQRT ( 0.0319 * 517.04 * 29 ) / ( 1.87 * 30.12 * 28.84 ) * 1.18 Yqa = 1.521 * SQRT 478.315 / 1,625.473 * 1.18 Yqa = 0.9719 0.9742 Diff = Absolute difference between Yqa and Y 2.54 2.31 Diff = (( Y - Yqa ) / Y ) * 100 Diff = (( 0.9972 - 0.972 ) / 0.9972 ) * 100 Average Diff = 2.43 Allowable = 5.0 1/2/202011:19 AM 112219 Div Stack M0010171 Long Cal Vost Box #5 11-29-18 Calibrator PM VOST Box Number VOST 5 Ambient Temp 72 Date 29-Nov-18 Wet Test Meter Number 10BB-1 Temp Reference Source Dry Gas Meter Number 3605443 Results in H20 (∆H) liters (Vw) liters (Vd) oF (Tw) Outlet, oC (Tdo) Inlet, oC (Tdi) Average, oF (Td) Time, min (O)Y 0.000 20.00 20.00 4.890 20.50 20.50 4.890 20.25 21.60 0.000 20.50 20.50 9.772 21.00 21.00 9.772 20.75 22.80 0.000 22.20 22.20 14.768 22.20 22.20 14.768 22.20 22.20 0.000 22.80 22.80 20.034 22.80 22.80 20.034 22.80 22.80 Average 1.0088 Vw - Gas Volume passing through the wet test meter 0 - Time of calibration run Vd - Gas Volume passing through the dry gas meter Pb - Barometric Pressure Tw - Temp of gas in the wet test meter Tdi - Temp of the inlet gas of the dry gas meter Tdo - Temp of the outlet gas of the dry gas meter Td - Average temp of the gas in the dry gas meter oC oF 1 2 3 4 5 6 0 0 0 0 0.0 0.0% 100 100 100 100 100.0 0.0% 500 500 500 500 500.0 0.0% 1000 1000 1000 1000 1000.0 0.0% 1 - Channel Temps must agree with +/- 5oF or 3oC 2 - Acceptable Temperature Difference less than 1.5 % Wet Test Meter Dry gas Meter Wet Test Meter Gas Volume 5.00.45 72.5 1.0154 68.5 10.2 1.0137 69.50.85 10.0 29.75 73.0 20.0 0.9943 11.0 1.0118 10.0 72.0 Dry Gas Meter Temperatures 2.0 20.0 72.5 72.5 15.0 72.51.5 1.7 Setting Roto- meter Liters per minute 1.2 Orifice Manometer 1.20 Long Cal and Temperature Cal Datasheet for VOST Dry Gas Meter Console ∆H - Pressure differential across orifice Y - Ratio of accuracy of wet test meter to dry gas meter Thermocouple Simulator (Accuracy +/- 1oF) Baro Press, in Hg ( Pb) 2.0 2.3 0.50 0.70 1.00 Temp Difference 2 (%) Average Temperature Reading 0 500 100 1000 Channel Number Temperature Reading from Individual Thermocouple Input 1 Select Temperature Reference Temperature ( )( ) ( ) ( ) 2 Vw O460tw 460tdPb H0317.0H 460tw6.13 HPbVd )460td(PbVwY   ∗+∗   +∗ ∆∗=∆ +∗  ∆+∗ +∗∗= ( )()( )()( )    + +−+=460FTempferenceRe 460FTempTest460FTempferenceReDiffTempo oo 172 Long Cal Vost Box #8 9_21_2019 Calibrator MDW VOST Box Number VOST 8 Ambient Temp 73 Date 21-Sep-19 Wet Test Meter Number 10BB-1 Temp Reference Source Dry Gas Meter Number 3602380 Results in H20 (∆H) liters (Vw) liters (Vd) oF (Tw) Outlet, oC (Tdo) Inlet, oC (Tdi) Average, oF (Td) Time, min (O)Y 0.000 24.00 24.00 2.999 24.00 24.00 2.999 24.00 24.00 0.000 24.00 24.00 8.960 24.00 24.00 8.960 24.00 24.00 0.000 24.00 24.00 9.934 24.00 24.00 9.934 24.00 24.00 0.000 24.00 24.00 18.700 24.00 24.00 18.700 24.00 24.00 Average 1.0088 Vw - Gas Volume passing through the wet test meter 0 - Time of calibration run Vd - Gas Volume passing through the dry gas meter Pb - Barometric Pressure Tw - Temp of gas in the wet test meter Tdi - Temp of the inlet gas of the dry gas meter Tdo - Temp of the outlet gas of the dry gas meter Td - Average temp of the gas in the dry gas meter oC oF 1 2 3 4 5 6 32 32 32 32 32.0 0.0% 212 212 212 212 212.0 0.0% 932 932 932 932 932.0 0.0% 1829 1829 1829 1829 1829.0 0.1% 1 - Channel Temps must agree with +/- 5oF or 3oC 2 - Acceptable Temperature Difference less than 1.5 % Wet Test Meter Dry gas Meter Wet Test Meter Gas Volume 3.00.00 72.0 1.0093 75.0 11.8 1.0060 75.00.35 9.0 30.08 71.0 9.9 1.0099 10.0 1.0099 17.8 75.0 Dry Gas Meter Temperatures 1.70 19.0 72.0 72.0 10.0 72.0 0.50 1.0 1.0 Setting Roto- meter Liters per minute 1.00 Orifice Manometer 0.50 1832 Long Cal and Temperature Cal Datasheet for VOST Dry Gas Meter Console ∆H - Pressure differential across orifice Y - Ratio of accuracy of wet test meter to dry gas meter Thermocouple Simulator (Accuracy +/- 1oF) Baro Press, in Hg ( Pb) 2.0 2.0 0.25 0.25 Channel Number Temperature Reading from Individual Thermocouple Input 1 Temp Difference 2 (%) Average Temperature Reading 32 932 212 Select Temperature Reference Temperature ( )( ) ( ) ( ) 2 Vw O460tw 460tdPb H0317.0H 460tw6.13 HPbVd )460td(PbVwY   ∗+∗   +∗ ∆∗=∆ +∗  ∆+∗ +∗∗= ( )()( )()( )    + +−+=460FTempferenceRe 460FTempTest460FTempferenceReDiffTempo oo 173 IASDATA\CHEMOURS\15418.002.018\DIVISION REPORT 11 2019-AMD 1/21/2020 APPENDIX F LIST OF PROJECT PARTICIPANTS 174 IASDATA\CHEMOURS\15418.002.018\DIVISION REPORT 11 2019-AMD 1/21/2020 The following WESTON employees participated in this project. Paul Meeter Senior Project Manager Jeff O’Neill Senior Project Manager Wes Fritz Senior Project Manager Matt Winkeler Team Member Kyle Schweitzer Team Member Brandon Berger Team Member 175