ML23240A743

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Louisiana Energy Services, LLC, Dba Urenco USA, Semi-Annual Radiological Effluent Release Report for Jan 1, 2023 Through June 30, 2023
ML23240A743
Person / Time
Site: 07003103
Issue date: 08/28/2023
From:
Louisiana Energy Services, URENCO USA
To:
Office of Nuclear Material Safety and Safeguards
Shared Package
ML23240A741 List:
References
LES-23-133-NRC
Download: ML23240A743 (1)


Text

URENCO USA: Report of Radioac tivity in Effluents: Liquid & Air: January 2023 - June 2023

There were no releases to the public during the reporting period that exceeded regulatory requirements, and detected isotopic uranium activities were comparable to pre-operational activities. N o dose assessment was performed because the maximum potential dose directly at the point of gaseous and liquid effluent discharge points were acceptable. The potential maximum doses directly at the discharge points for both liquid and gaseous effluent were shown to be less than 10% of the radionuclide concentration dose.

In liquid effluent, the concentrations of isotopic uranium were either below the Minimum Detectable Concentration (MDC) or less than 10% of values listed in 10 CFR 20, Appendix B, Table 3, Releases to Sewers (Table 1-1).

In gaseous effluent, the gross uranium activ ity was either below the Minimum Detectable Activity (MDA) or less than 10% of values listed in 10 CFR 20, Appendix B, Table 2, Effluent Concentrations - Class D Air for U234, U235, and U238.

The concentrations of isotopic uranium in gaseous effluent was either below the Minimum Detectable Concentration (MDC) or less than 10% of values listed in 10 CFR 20.1301, 10 CFR 20.1302, and 10 CFR 20.1101(d), as described in NRC Regulator y Guide 4.20 Constraint on Releases of Airborne Radioactive Materials to the Environment for Licensees other than Power Reactors dated December 1996.

LIST OF TABLES

Table No. Title

1-1 Lift Station 1 W astewater Effluent - Radionuclides Quarters 1 & 2, 2023

1-2 Separations Building Module-1001 (SBM 1001): Pumped Extract Exhaust Gaseous Effluent Vent System, 1001-562-1MA1 & 1001-562-1MA2 Gross Alpha & Beta, and Radionuclides: Quarters 1 & 2, 2023

1-3 Separations Building Module-1003 (SBM 1003): Pumped Extract Exhaust Gaseous Effluent Vent System, 1003-562-1MA1 & 1003-562-1MA2 Gross Alpha & Beta, and Radionuclides: Quarters 1 & 2, 2023

1-4 Separations Building Module-1005 (SBM 1005): Pumped Extract Exhaust Gaseous Effluent Vent System, 1005-562-1MA1 & 1005-562-1MA2 Gross Alpha & Beta, and Radionuclides Quarters: 1 & 2, 2023

1-5 Cylinder Receipt and Dispatch Building-1100 (CRDB 1100): Local Extract Exhaust Gaseous Effluent Vent System, 1100- 562-1MA1 & 1100-562-1MA2 - Gross Alpha &

Beta, and Radionuclides: Quarters 1 & 2, 2023

1-6 Cylinder Receipt and Dispatch Building-1100 (CRDB 1100): Fume Hood Exhaust Gaseous Effluent Vent System, 1100- 562-2MA1 & 1100- 562-2MA2 Gross Alpha & Beta, and Radionuclides : Quarters 1 & 2, 2023

TABLE 1-1 Lift Station 1 Wastewater Effluent - Radionuclides, Quarters 1 & 2, 2023 URENCO USA Lea County, New Mexico

URENCO USA Lea County New Mexico

Lift Station 1 WasteWater Effluent-Radionuclides

% of Table 3 of Sample Total Counting Quantity Appendix B to 10 Radionuclide Date Sample Time Results Uncertainty Total Flow* Released CFR 20 Values-(Date/Time) Period (days) (Ci/ml) (Ci/ml) (gallons/day) (Ci) Monthly Average Release to Sewers 1Lift Station 1 - January - June 2023 Uranium - 233/234 6/30/2023 01/01/23 4.80E -10 1.50E-10 13,000 Result Below LLD Result Below LLD Uranium - 235/236 0938 - 180 0.00E+00 0.00E+00 13,000 Result Below LLD Result Below LLD Uranium - 238 06/30/23 3.80E -10 1.30E-10 13,000 Result Below LLD Result Below LLD

Lift Station 1 Duplicate - January - June 2023 Uranium - 233/234 01/01/23 4.30E-10 1.40E-10 13,000 Result Below LLD Result Below LLD Uranium - 235/236 6/30/2023 - 180 0.00E+00 0.00E+00 13,000 Result Below LLD Result Below LLD 0938 06/30/23 Uranium - 238 0.00E+00 0.00E+00 13,000 Result Below LLD Result Below LLD

Notes:

1. * = Table 3.4-4 Anticipated Normal Plant Water Consumption from the Environmental Report, Rev. 23, lists Total Personnel Water Use as approximately 13,000 gallons per day.
2. µCi/mL = microCuries per milliliter.
3. Radionuclides analyzed using method EICHROM AC01 by Cardinal Laboratories of Hobbs, NM.
4. Quantity released is calculated if the result equals or exceeds the LLD. Facility -required lower level of detection (LLD) is 3.09E-9 µCi/m L.

TABLE 1-2 Separations Building Module-1001 (SBM 1001): Pumped Extract Exhaust Gaseous Effluent Vent System, 1001-562-1MA1 & 1001-562-1MA2 Gross Alpha & Beta, and Rad ionuclides: Quarters 1 & 2, 2023 URENCO USA Lea County, New Mexico.

Se pe rations Building Module - 1001 (SBM 1001) Pum pe d Ex tract Ex haust (PXGEV S) Gase ous Efflue nt V e nt Sy ste m -Gross Alpha & Be ta T otal Vent Quantity % of T able 2 of Sample ID Sample Date (Off Sample Period Analyte Gross Result MDA (Ci/ml) Instrument Unc System Flow Re le ase d Appendix B to (Functional Loc. / On Date Date/Time) (Ci/ml) @ 95 CL (Ci/ml) ( m3 ) (Ci) 10 CFR 20 Values 1001-562-1MA1 10015621MA1 010323 2/1/2023 11:35 01/03/23 - 02/01/23 1.25E-16 1.74E-16 1.22E-07 3.91E+05 <MD A <MD A 10015621MA1 020123 3/2/2023 11:24 2/01/203 - 3/02/23 0.00E+00 1.74E-16 0.00E+00 4.23E+05 <MD A <MD A 10015621MA1 030223 4/3/2023 15:00 3/02/23 - 4/03/23 5.59E-17 1.55E-16 9.91E-08 4.55E+05 <MD A <MD AGross 10015621MA1 040323 5/4/2023 11:00 4/03/23 - 5/04/23 4.14E-17 1.20E-15 3.19E-08 4.29E+05 <MD A <MD AAlpha 10015621MA1 050423 6/1/2023 14:05 5/04/23 - 6/01/23 1.21E-16 1.41E-15 4.96E-08 3.05E+05 <MD A <MD A 10015621MA1 060123 7/6/2023 14:02 6/01/23 - 7/06/23 0.00E+00 1.14E-15 0.00E+00 3.46E+05 <MD A <MD A 10015621MA1 010323 2/1/2023 11:35 01/03/23 - 02/01/23 3.49E-15 3.41E-15 1.46E-06 3.91E+05 1.37E-09 0.116%

10015621MA1 020123 3/2/2023 11:24 2/01/203 - 3/02/23 7.01E-15 3.41E-15 1.68E-06 4.23E+05 2.97E-09 0.234%

10015621MA1 030223 4/3/2023 15:00 3/02/23 - 4/03/23 4.26E-15 3.04E-15 1.56E-06 4.55E+05 1.94E-09 0.142%Gross 10015621MA1 040323 5/4/2023 11:00 4/03/23 - 5/04/23 5.58E-16 7.95E-15 1.35E-07 4.29E+05 <MD A <MD ABet a 10015621MA1 050423 6/1/2023 14:05 5/04/23 - 6/01/23 7.25E-16 9.30E-15 1.44E-07 3.05E+05 <MD A <MD A 10015621MA1 060123 7/6/2023 14:02 6/01/23 - 7/06/23 5.49E-16 7.54E-15 1.40E-07 3.46E+05 <MD A <MD A 1001-562-1MA2 10015621MA2 010323 2/1/2023 11:39 01/03/23 - 02/01/23 1.15E-16 1.54E-16 9.91E-083.27E+05 <MD A <MD A 10015621MA2 020123 3/2/2023 11:39 2/01/203 - 3/02/23 1.22E-16 1.63E-16 9.91E-084.53E+05 <MD A <MD A 10015621MA2 030223 4/3/2023 15:04 3/02/23 - 4/03/23 5.32E-17 1.48E-16 6.76E-08Gross 4.85E+05 <MD A <MD A 10015621MA2 040323 5/4/2023 11:04 4/03/23 - 5/04/23 2.89E-17 1.17E-15 3.19E-08 4.63E+05 <MD A <MD AAlpha 10015621MA2 050423 6/1/2023 14:12 5/04/23 - 6/01/23 0.00E+00 1.21E-15 0.00E+00 4.18E+05 <MD A <MD A 10015621MA2 060123 7/6/2023 14:09 6/01/23 - 7/06/23 0.00E+00 1.07E-15 0.00E+00 5.20E+05 <MD A <MD A 10015621MA2 010323 2/1/2023 11:39 01/03/23 - 02/01/23 6.47E-15 3.02E-15 1.64E-063.27E+05 2.11E-09 0.216%

10015621MA2 020123 3/2/2023 11:39 2/01/203 - 3/02/23 4.03E-15 3.20E-15 1.39E-064.53E+05 1.83E-09 0.134%

10015621MA2 030223 4/3/2023 15:04 3/02/23 - 4/03/23 4.94E-15 2.90E-15 1.52E-06Gross 4.85E+05 2.39E-09 0.165%

10015621MA2 040323 5/4/2023 11:04 4/03/23 - 5/04/23 5.43E-16 7.74E-15 1.49E-07 4.63E+05 <MD A <MD ABet a 10015621MA2 050423 6/1/2023 14:12 5/04/23 - 6/01/23 6.46E-16 8.03E-15 1.44E-07 4.18E+05 <MD A <MD A 10015621MA2 060123 7/6/2023 14:09 6/01/23 - 7/06/23 5.31E-16 7.05E-15 1.40E-07 5.20E+05 <MD A <MD A

Se pe rations Building Module - 1001 (SBM 1001) Pum pe d Ex tract Ex haust (PXGEV S) Gase ous Efflue nt V e nt Sy ste m -Gross Alpha & Be ta Sample Date Result Uncertainty Uncertainty MDC T otal Flow Quantity % of T able 2 of Radionuclide (Off D ate) Sample Period (Ci/ml) (2 T PU) (1 T PU) (Ci/ml) ( m3 ) Re le ase d Appendix B to 10 (Ci/ml) (Ci/ml) (Ci) CFR 20 Values Sam ple ID: 1001-562-1MA1 Uranium-233/234 1st Qtr 2023 3.23E-16 1.41E-16 1.42E-16 8.80E-17 0.000.01%

Uranium-235/236 1st Qtr 2023 5.43E-17 7.11E-17 7.12E-17 1.09E-16 Re sult B e lo w MD C4/3/20231/3/23 - 4/3/231.27E+06Re sult B e lo w MD C Uranium-238 1st Qtr 2023 3.34E-16 1.41E-16 1.43E-16 6.11E-17 0.000.01%

Uranium-233/234 2nd Qtr 2023 2.32E-16 1.26E-16 1.28E-16 8.12E-17 0.000.01%

Uranium-235/236 2nd Qtr 2023 8.03E-17 8.27E-17 8.29E-17 8.75E-17 Re sult B e lo w MD C7/6/20234/3/23 - 7/6/231.08E+06Re sult B e lo w MD C Uranium-238 2nd Qtr 2023 2.15E-16 1.22E-16 1.23E-16 8.11E-17 0.000.01%

Sam ple ID: 1001-562-1MA2 Uranium-233/234 1st Qtr 2023 2.45E-16 8.31E-17 8.50E-17 2.85E-17 0.000.01%

Uranium-235/236 1st Qtr 2023 4.08E-17 3.72E-17 3.74E-17 3.52E-17 0.004/3/20231/3/23 - 4/3/231.26E+060.00%

Uranium-238 1st Qtr 2023 3.28E-16 9.77E-17 1.00E-16 4.09E-17 0.000.01%

Uranium-233/234 2nd Qtr 2023 1.86E-16 7.11E-17 7.24E-17 2.79E-17 0.000.01%

Uranium-235/236 2nd Qtr 2023 3.30E-17 3.63E-17 3.64E-17 4.95E-17 Re sult B e lo w MD C7/6/20234/3/23 - 7/6/231.40E+06Re sult B e lo w MD C Uranium-238 2nd Qtr 2023 1.40E-16 6.25E-17 6.33E-17 4.01E-17 0.000.00%

Notes: None

TABLE 1-3 Separations Building Module-1003 (SBM 1003): Pumped Extract Exhaust Gaseous Effluent Vent System, 1003-562-1MA1 &

1003-562 -1MA2 Gross Alpha & Beta, and Radionuclides: Quarters 1 & 2, 2023 URENCO USA Lea County, New Mexico

Se pe rations Building Module -1003 (SBM 1003) Pum pe d Ex tract Ex haust (PXGEV S) Gase ous Efflue nt V e nt Sy ste m -Gross Alpha & Be ta T otal Vent Quantity % of T able 2 of Sample ID Sample Date (Off Sample Period Analyte Gross Result MDA (Ci/ml) Instrument Unc System Flow Re le ase d Appendix B to (Functional Loc. / On Date Date/Time) (Ci/ml) @ 95 CL (Ci/ml) ( m3 ) (Ci) 10 CFR 20 Values 1003-562-1MA1 10035621MA1 010323 2/1/2023 12:08 01/03/23 - 02/01/23 0.00E+00 1.45E-16 0.00E+004.58E+05 <MD A <MD A 10035621MA1 020123 3/2/2023 14:01 2/01/203 - 3/02/23 1.47E-16 1.33E-16 1.22E-074.42E+05 6.49E-11 0.005%

10035621MA1 030223 4/3/2023 13:52 3/02/23 - 4/03/23 0.00E+00 1.34E-16 0.00E+00Gross 4.90E+05 <MD A <MD A 10035621MA1 040323 6/1/2023 14:30 4/03/23 - 6/01/23 0.00E+00 1.08E-15 0.00E+00Alpha1.90E+05 <MD A <MD A

10035621MA1 060123 7/6/2023 14:23 6/01/23 - 7/06/23 3.20E-17 9.29E-16 3.19E-084.69E+05 <MD A <MD A 10035621MA1 010323 2/1/2023 12:08 01/03/23 - 02/01/23 6.07E-15 2.83E-15 1.64E-064.58E+05 2.78E-09 0.202%

10035621MA1 020123 3/2/2023 14:01 2/01/203 - 3/02/23 3.35E-15 2.61E-15 1.54E-06Gross 4.42E+05 1.48E-09 0.112%

10035621MA1 030223 4/3/2023 13:52 3/02/23 - 4/03/23 3.31E-15 2.63E-15 1.39E-06Bet a4.90E+05 1.62E-09 0.110%

10035621MA1 040323 6/1/2023 14:30 4/03/23 - 6/01/23 5.77E-16 7.17E-15 1.44E-071.90E+05 <MD A <MD A 10035621MA1 060123 7/6/2023 14:23 6/01/23 - 7/06/23 5.43E-16 6.15E-15 1.49E-074.69E+05 <MD A <MD A 1003-562-1MA2 10035621MA2 010323 2/1/2023 12:13 01/03/23 - 02/01/23 0.00E+00 2.01E-16 0.00E+005.06E+05 <MD A <MD A 10035621MA2 020123 3/2/2023 14:13 2/01/203 - 3/02/23 1.56E-16 2.09E-16 9.91E-08Gross 4.87E+05 <MD A <MD A 10035621MA2 030223 4/3/2023 13:59 3/02/23 - 4/03/23 -2.69E-18 1.90E-16 6.76E-08Alpha5.36E+05 <MD A <MD A 10035621MA2 040323 6/1/2023 14:40 4/03/23 - 6/01/23 -4.81E-19 7.36E-16 2.25E-089.78E+05 <MD A <MD A 10035621MA2 060123 7/6/2023 14:32 6/01/23 - 7/06/23 4.03E-17 1.17E-15 3.19E-085.81E+05 <MD A <MD A 10035621MA2 010323 2/1/2023 12:13 01/03/23 - 02/01/23 8.67E-15 3.93E-15 1.66E-065.06E+05 4.39E-09 0.289%

10035621MA2 020123 3/2/2023 14:13 2/01/203 - 3/02/23 7.49E-15 4.09E-15 1.56E-06Gross 4.87E+05 3.65E-09 0.250%

10035621MA2 030223 4/3/2023 13:59 3/02/23 - 4/03/23 5.69E-15 3.72E-15 1.60E-065.36E+05 3.05E-09 0.190%

10035621MA2 040323 6/1/2023 14:40 4/03/23 - 6/01/23 1.49E-16 4.87E-15 1.31E-07Bet a9.78E+05 <MD A <MD A

10035621MA2 060123 7/6/2023 14:32 6/01/23 - 7/06/23 4.14E-16 7.74E-15 1.31E-075.81E+05 <MD A <MD A

Se pe rations Building Module -1003 (SBM 1003) Pum pe d Ex tract Ex haust (PXGEV S) Gase ous Efflue nt V e nt Sy ste m -Gross Alpha & Be ta Sample Date Result Uncertainty Uncertainty MDC T otal Flow Quantity % of T able 2 of Radionuclide (Off D ate) Sample Period (Ci/ml) (2 sigma) (1 sigma) (Ci/ml) ( m3 ) Re le ase d Appendix B to 10 (Ci/ml) (Ci/ml) (Ci) CFR 20 Values 1003-562-1MA1 Uranium-233/234 1st Qtr 2023 3.25E-16 9.61E-17 9.88E-17 3.19E-17 0.000.01%

Uranium-235/236 1st Qtr 2023 4.94E-17 4.29E-17 4.31E-17 4.94E-17 0.004/3/20231/3/23 - 4/3/231.39E+060.00%

Uranium-238 1st Qtr 2023 2.59E-16 8.47E-17 8.67E-17 2.78E-17 0.000.01%

Uranium-233/234 2nd Qtr 2023 3.74E-16 1.21E-16 1.24E-16 4.51E-17 0.000.01%

Uranium-235/236 2nd Qtr 2023 0.00E+00 3.23E-17 3.23E-17 6.98E-17 Re sult B e lo w MD C7/6/20234/3/23 - 7/6/236.59E+05Re sult B e lo w MD C Uranium-238 2nd Qtr 2023 3.74E-16 1.21E-16 1.24E-16 4.51E-17 0.000.01%

1003-562-1MA2 Uranium-233/234 1st Qtr 2023 5.01E-16 1.41E-16 1.45E-16 3.89E-17 0.000.02%

Uranium-235/236 1st Qtr 2023 2.10E-17 3.21E-17 3.21E-17 4.79E-17 Re sult B e lo w MD C4/3/20231/3/23 - 4/3/231.53E+06Re sult B e lo w MD C Uranium-238 1st Qtr 2023 5.30E-16 1.46E-16 1.51E-16 5.57E-17] Re sult B e lo w MD CRe sult B e lo w MD C Uranium-233/234 2nd Qtr 2023 2.31E-16 1.00E-16 1.02E-16 6.98E-17 0.000.01%

Uranium-235/236 2nd Qtr 2023 7.11E-17 6.10E-17 6.12E-17 6.01E-17 0.007/6/20234/3/23 - 7/6/231.56E+060.00%

Uranium-238 2nd Qtr 2023 1.49E-16 7.85E-17 7.92E-17 4.86E-17 0.000.00%

Notes: 04/03/2023 - Unable to perform filter change out on 1003-562-1MA2 due to 1003-562-1MA1 being out of service after instrument fault. Filters removed on 6/1/2023.

TABLE 1-4 Separations Building Module-1005 (SBM 1005): Pumped Extract Exhaust Gaseous Effluent Vent System, 1005-562-1MA1 &

1005-562 -1MA2 Gross Alpha & Beta, and Radionuclides: Quarters 1 & 2, 2023 URENCO USA Lea County, New Me xico

Se pe rations Building Module -1005 (SBM 1005) Pum pe d Ex tract Ex haust (PXGEV S) Gase ous Efflue nt V e nt Sy ste m -Gross Alpha & Be ta T otal Vent Quantity % of T able 2 of Sample ID Sample Date (Off Sample Period Analyte Gross Result MDA (Ci/ml) Instrument Unc System Flow Re le ase d Appendix B to (Functional Loc. / On Date Date/Time) (Ci/ml) @ 95 CL (Ci/ml) ( m3 ) (Ci) 10 CFR 20 Values 1005-562-1MA1 10055621MA1 010323 2/1/2023 12:24 01/03/23 - 02/01/23 0.00E+00 1.89E-16 0.00E+007.66E+05 <MD A <MD A 10055621MA1 020123 3/2/2023 14:26 2/01/203 - 3/02/23 2.74E-16 1.84E-16 1.40E-077.66E+05 2.10E-10 0.009%

10055621MA1 030223 4/3/2023 13:40 3/02/23 - 4/03/23 1.27E-16 1.71E-16 9.91E-08 8.25E+05 <MD A <MD AGross 10055621MA1 040323 5/4/2023 11:40 4/03/23 - 5/04/23 2.06E-17 1.20E-15 2.25E-08 7.85E+05 <MD A <MD AAlpha

10055621MA1 050423 6/1/2023 15:10 5/04/23 - 6/01/23 0.00E+00 1.28E-15 0.00E+00 7.04E+05 <MD A <MD A

10055621MA1 060123 7/6/2023 14:44 6/01/23 - 7/06/23 1.70E-17 9.92E-16 2.25E-08 8.92E+05 <MD A <MD A 10055621MA1 010323 2/1/2023 12:24 01/03/23 - 02/01/23 5.13E-15 3.70E-15 1.43E-067.66E+05 3.93E-09 0.171%

10055621MA1 020123 3/2/2023 14:26 01/03/23 - 02/01/23 4.55E-15 3.61E-15 1.39E-067.66E+05 3.48E-09 0.152%

10055621MA1 030223 4/3/2023 13:40 3/02/23 - 4/03/23 3.16E-15 3.35E-15 1.29E-06Gross 8.25E+05 <MD A <MD A 10055621MA1 040323 5/4/2023 11:40 4/03/23 - 5/04/23 5.99E-16 7.95E-15 1.40E-07Bet a7.85E+05 <MD A <MD A 10055621MA1 050423 6/1/2023 15:10 5/04/23 - 6/01/23 6.40E-16 8.50E-15 1.40E-077.04E+05 <MD A <MD A 10055621MA1 060123 7/6/2023 14:44 6/01/23 - 7/06/23 3.58E-16 6.57E-15 1.26E-078.92E+05 <MD A <MD A 1005-562-1MA2 10055621MA2 010323 2/1/2023 12:25 01/03/23 - 02/01/23 1.05E-16 9.49E-17 1.22E-071.49E+06 1.56E-10 0.003%

10055621MA2 020123 3/2/2023 14:30 2/01/203 - 3/02/23 6.50E-17 1.81E-16 6.76E-087.82E+05 <MD A <MD A 10055621MA2 030223 4/3/2023 13:47 3/02/23 - 4/03/23 1.25E-16 1.68E-16 9.91E-08Gross 8.46E+05 <MD A <MD A 10055621MA2 040323 5/4/2023 11:43 4/03/23 - 5/04/23 0.00E+00 1.21E-15 0.00E+00Alpha8.09E+05 <MD A <MD A 10055621MA2 050423 6/1/2023 15:03 5/04/23 - 6/01/23 2.27E-17 1.32E-15 2.25E-087.31E+05 <MD A <MD A 10055621MA2 060123 7/6/2023 14:49 6/01/23 - 7/06/23 1.86E-17 1.08E-15 2.25E-089.08E+05 <MD A <MD A 10055621MA2 010323 2/1/2023 12:25 01/03/23 - 02/01/23 2.58E-15 1.86E-15 1.43E-061.49E+06 3.84E-09 0.086%

10055621MA2 020123 3/2/2023 14:30 2/01/203 - 3/02/23 5.80E-15 3.54E-15 1.50E-067.82E+05 4.53E-09 0.193%

10055621MA2 030223 4/3/2023 13:47 3/02/23 - 4/03/23 5.18E-15 3.29E-15 1.49E-06Gross 8.46E+05 4.38E-09 0.173%

10055621MA2 040323 5/4/2023 11:43 4/03/23 - 5/04/23 5.43E-16 8.03E-15 1.35E-07Bet a8.09E+05 <MD A <MD A 10055621MA2 050423 6/1/2023 15:03 5/04/23 - 6/01/23 4.76E-16 8.73E-15 1.26E-077.31E+05 <MD A <MD A 10055621MA2 060123 7/6/2023 14:49 6/01/23 - 7/06/23 5.96E-16 7.17E-15 1.44E-079.08E+05 <MD A <MD A

Se pe rations Building Module -1005 (SBM 1005) Pum pe d Ex tract Ex haust (PXGEV S) Gase ous Efflue nt V e nt Sy ste m -Gross Alpha & Be ta Sample Date Result Uncertainty Uncertainty MDC T otal Flow Quantity % of T able 2 of Radionuclide (Off D ate) Sample Period (Ci/ml) (2 sigma) (1 sigma) (Ci/ml) ( m3 ) Re le ase d Appendix B to 10 (Ci/ml) (Ci/ml) (Ci) CFR 20 Values 1005-562-1MA1 Uranium-233/234 1st Qtr 2023 3.09E-16 9.92E-17 1.02E-16 4.52E-17 0.000.01%

Uranium-235/236 1st Qtr 2023 3.72E-17 4.09E-17 4.10E-17 5.58E-17 Re sult B e lo w MD C4/3/20231/3/23 - 4/3/232.36E+06Re sult B e lo w MD C Uranium-238 1st Qtr 2023 2.63E-16 9.12E-17 9.31E-17 4.51E-17 0.000.01%

Uranium-233/234 2nd Qtr 2023 1.22E-16 6.11E-17 6.17E-17 4.54E-17 2.91E-100.004%

Uranium-235/236 2nd Qtr 2023 5.69E-18 2.60E-17 2.60E-17 6.09E-17 Re sult B e lo w MD C7/6/20234/3/23 - 7/6/232.38E+06Re sult B e lo w MD C Uranium-238 2nd Qtr 2023 1.33E-16 6.44E-17 6.51E-17 5.11E-17 0.00E+000.004%

1005-562-1MA2 Uranium-233/234 1st Qtr 2023 1.37E-16 5.36E-17 5.45E-17 2.46E-17 0.000.00%

Uranium-235/236 1st Qtr 2023 2.21E-17 2.52E-17 2.52E-17 3.33E-17 Re sult B e lo w MD C4/3/20231/3/23 - 4/3/233.12E+06Re sult B e lo w MD C Uranium-238 1st Qtr 2023 1.71E-16 6.03E-17 6.16E-17 2.89E-17 0.000.01%

Uranium-233/234 2nd Qtr 2023 1.64E-16 7.05E-17 7.15E-17 4.14E-17 4.02E-100.005%

Uranium-235/236 2nd Qtr 2023 1.66E-17 2.53E-17 2.53E-17 3.78E-17 Re sult B e lo w MD C7/6/20234/3/23 - 7/6/232.45E+06Re sult B e lo w MD C Uranium-238 2nd Qtr 2023 1.79E-16 7.35E-17 7.46E-17 3.84E-17 0.00E+000.006%

Notes: None

TABLE 1-5 Cylinder Receipt and Dispatch Building-1100 (CRDB 1100): Local Extract Exhaust Gaseous Effluent Vent System, 1100- 562-1MA1 &

1100-562 -1MA2, Gross Alpha & Beta, and Radionuclides: Quarters 1 & 2, 2023 URENCO USA Lea County, New Mexico

Containe r Re ce ipt and Dispatch Building -1100 (CRDB 1100) Ex haust (FHGEV S) Gase ous Efflue nt V e nt Sy ste m -Gross Alpha & Be ta T otal Vent Quantity % of T able 2 of Sample ID Sample Date (Off Sample Period Analyte Gross Result MDA (Ci/ml) Instrument Unc System Flow Re le ase d Appendix B to (Functional Loc. / On Date Date/Time) (Ci/ml) @ 95 CL (Ci/ml) ( m3 ) (Ci) 10 CFR 20 Values 1100-562-1MA1 11005621MA1 010323 2/1/2023 11:50 01/ 03/23 - 02/01/23 1.26E-16 1.69E-16 9.91E-087.31E+05 <MD A <MD A 11005621MA1 020123 3/3/2023 10:47 2/ 01/203 - 3/03/23 0.00E+00 1.54E-16 0.00E+007.29E+05 <MD A <MD A 11005621MA1 030323 4/3/2023 14:25 3/ 03/23 - 4/03/23 0.00E+00 1.77E-16 0.00E+00Gross 5.04E+05 <MD A <MD A 11005621MA1 040323 5/4/2023 14:09 4/ 03/23 - 5/04/23 0.00E+00 1.36E-15 0.00E+00Alpha1.08E+05 <MD A <MD A 11005621MA1 050423 6/1/2023 15:28 5/ 04/23 - 6/01/23 0.00E+00 1.16E-15 0.00E+005.95E+05 <MD A <MD A 11005621MA1 060123 7/6/2023 14:55 6/ 01/23 - 7/06/23 8.25E-17 9.56E-16 4.96E-08 8.60E+05 <MD A <MD A 11005621MA1 010323 2/1/2023 11:50 01/03/23 - 02/01/23 4.39E-15 3.32E-15 1.41E-067.31E+05 3.21E-09 0.146%

11005621MA1 020123 3/3/2023 10:47 2/ 01/203 - 3/03/23 4.75E-15 3.02E-15 1.49E-067.29E+05 3.46E-09 0.158%

11005621MA1 030323 4/3/2023 14:25 3/ 03/23 - 4/03/23 4.97E-15 3.47E-15 1.52E-06Gross 5.04E+05 2.50E-09 0.166%

11005621MA1 040323 5/4/2023 14:09 4/ 03/23 - 5/04/23 6.10E-16 9.03E-15 1.35E-07Bet a1.08E+05 <MD A <MD A 11005621MA1 050423 6/1/2023 15:28 5/ 04/23 - 6/01/23 6.58E-16 7.67E-15 1.49E-075.95E+05 <MD A <MD A 11005621MA1 060123 7/6/2023 14:55 6/ 01/23 - 7/06/23 4.61E-16 6.33E-15 1.40E-078.60E+05 <MD A <MD A 1100-562-1MA2 11005621MA2 010323 2/1/2023 11:55 01/ 03/23 - 02/01/23 1.22E-16 1.63E-16 9.91E-087.47E+05 <MD A <MD A 11005621MA2 020123 3/3/2023 10:52 2/ 01/203 - 3/03/23 6.20E-17 1.72E-16 6.76E-085.01E+05 <MD A <MD A 11005621MA2 030323 4/3/2023 14:27 3/ 03/23 - 4/03/23 0.00E+00 2.04E-16 0.00E+00Gross 5.04E+05 <MD A <MD A 11005621MA2 040323 5/4/2023 14:15 4/ 03/23 - 5/04/23 1.84E-17 1.07E-15 2.25E-08Alpha6.24E+05 <MD A <MD A 11005621MA2 050423 6/1/2023 15:35 5/ 04/23 - 6/01/23 2.08E-17 1.21E-15 2.25E-085.89E+05 <MD A <MD A 11005621MA2 060123 7/6/2023 14:59 6/ 01/23 - 7/06/23 7.26E-18 9.63E-16 2.25E-087.82E+05 <MD A <MD A 11005621MA2 010323 2/1/2023 11:55 01/ 03/23 - 02/01/23 6.66E-15 3.20E-15 1.63E-067.47E+05 4.98E-09 0.222%

11005621MA2 020123 3/3/2023 10:52 2/ 01/203 - 3/03/23 7.45E-15 3.38E-15 1.66E-065.01E+05 3.73E-09 0.248%

11005621MA2 030323 4/3/2023 14:27 3/ 03/23 - 4/03/23 6.46E-15 4.00E-15 1.56E-06Gross 5.04E+05 3.25E-09 0.215%

11005621MA2 040323 5/4/2023 14:15 4/ 03/23 - 5/04/23 3.88E-16 7.11E-15 1.26E-07Bet a6.24E+05 <MD A <MD A 11005621MA2 050423 6/1/2023 15:35 5/ 04/23 - 6/01/23 7.51E-16 8.03E-15 1.53E-075.89E+05 <MD A <MD A 11005621MA2 060123 7/6/2023 14:59 6/ 01/23 - 7/06/23 2.98E-16 6.38E-15 1.31E-077.82E+05 <MD A <MD A

Containe r Re ce ipt and Dispatch Building -1100 (CRDB 1100) Fum e Hood Ex haust (FHGEV S) Gase ous Efflue nt V e nt Sy ste m -Gross Alpha & Be ta Sample Date Result Uncertainty Uncertainty MDC T otal Flow Quantity % of T able 2 of Radionuclide (Off D ate) Sample Period (Ci/ml) (2 sigma) (1 sigma) (Ci/ml) ( m3 ) Re le ase d Appendix B to 10 (Ci/ml) (Ci/ml) (Ci) CFR 20 Values 1100-562-1MA1 Uranium-233/234 1st Qtr 2023 1.77E-16 8.07E-17 8.17E-17 6.33E-17 0.000.01%

Uranium-235/236 1st Qtr 2023 1.71E-17 2.90E-17 2.91E-17 4.93E-17 Re sult B e lo w MD C4/3/20231/3/23 - 4/3/231.96E+06Re sult B e lo w MD C Uranium-238 1st Qtr 2023 1.88E-16 8.03E-17 8.14E-17 4.38E-17 0.000.01%

Uranium-233/234 2nd Qtr 2023 2.72E-16 9.17E-17 9.38E-17 3.55E-17 0.000.01%

Uranium-235/236 2nd Qtr 2023 1.68E-17 2.56E-17 2.57E-17 3.83E-17 Re sult B e lo w MD C7/6/20234/3/23 - 7/6/231.56E+06Re sult B e lo w MD C Uranium-238 2nd Qtr 2023 2.04E-16 7.90E-17 8.03E-17 3.89E-17 0.000.01%

1100-562-1MA2 Uranium-233/234 1st Qtr 2023 9.74E-17 5.75E-17 5.79E-17 4.00E-17 0.000.00%

Uranium-235/236 1st Qtr 2023 1.89E-17 2.88E-17 2.89E-17 4.30E-17 Re sult B e lo w MD C4/3/20231/3/23 - 4/3/231.75E+06Re sult B e lo w MD C Uranium-238 1st Qtr 2023 2.64E-16 9.54E-17 9.72E-17 3.99E-17 0.000.01%

Uranium-233/234 2nd Qtr 2023 1.73E-16 7.26E-17 7.36E-17 3.87E-17 0.000.01%

Uranium-235/236 2nd Qtr 2023 2.42E-17 3.13E-17 3.13E-17 4.35E-17 Re sult B e lo w MD C7/6/20234/3/23 - 7/6/232.00E+06Re sult B e lo w MD C Uranium-238 2nd Qtr 2023 1.57E-16 6.93E-17 7.02E-17 4.15E-17 0.000.01%

Notes: 1100- 562-1MA2 totalized stack volume collected from redundant monitor 1100- 562-1MA1 for filter 3/02/2023 due to stack probe issue.

TABLE 1-6 Cylinder Receipt and Dispatch Building-1100 (CRDB 1100): Fume Hood Exhaust Gaseous Effluent Vent System, 1100- 562-2MA1 &

1100-562 -2MA2, Gross Alpha & Beta, and Radionuclides: Quarters 1 & 2, 2023 URENCO USA Lea County, New Mexico

Containe r Re ce ipt and Dispatch Building -1100 (CRDB 1100) Fum e Hood Ex haust (LXGEV S) Gase ous Efflue nt V e nt Sy ste m -Gross Alpha & Be ta T otal Vent Quantity % of T able 2 of Sample ID Sample Date (Off Sample Period Analyte Gross Result MDA (Ci/ml) Instrument Unc System Flow Re le ase d Appendix B to (Functional Loc. / On Date Date/Time) (Ci/ml) @ 95 CL (Ci/ml) ( m3 ) (Ci) 10 CFR 20 Values 1100-562-2MA1 11005622MA1 010323 2/1/2023 11:57 01/ 03/23 - 02/01/23 3.84E-16 1.72E-16 1.71E-072.95E+07 1.13E-08 0.013%

11005622MA1 020123 3/3/2023 10:59 2/ 01/203 - 3/03/23 1.25E-16 1.68E-16 9.91E-08 3.08E+07 <MD A <MD A 11005622MA1 030323 4/3/2023 14:39 3/03/23 - 4/03/23 5.35E-16 1.61E-16 2.07E-07 3.19E+07 1.71E-08 0.018%Gross 11005622MA1 040323 5/4/2023 11:22 4/03/23 - 5/04/23 -7.19E-19 1.10E-15 2.25E-08 3.13E+07 <MD A <MD AAlpha 11005622MA1 050423 6/1/2023 15:20 5/04/23 - 6/01/23 6.32E-17 1.22E-15 3.90E-08 2.89E+07 <MD A <MD A 11005622MA1 060123 7/6/2023 15:01 6/01/23 - 7/06/23 1.72E-17 1.00E-15 2.25E-08 1.90E+07 <MD A <MD A 11005622MA1 010323 2/1/2023 11:57 01/03/23 - 02/01/23 4.90E-15 3.38E-15 1.45E-062.95E+07 1.44E-07 0.163%

11005622MA1 020123 3/3/2023 10:59 2/ 01/203 - 3/03/23 4.97E-15 3.29E-15 1.47E-06 3.08E+07 1.53E-07 0.166%

11005622MA1 030323 4/3/2023 14:39 3/03/23 - 4/03/23 5.75E-15 3.15E-15 1.56E-06 3.19E+07 1.83E-07 0.192%Gross 11005622MA1 040323 5/4/2023 11:22 4/03/23 - 5/04/23 5.15E-16 7.29E-15 1.49E-07 3.13E+07 <MD A <MD ABet a 11005622MA1 050423 6/1/2023 15:20 5/04/23 - 6/01/23 6.32E-16 8.10E-15 1.44E-07 2.89E+07 <MD A <MD A 11005622MA1 060123 7/6/2023 15:01 6/01/23 - 7/06/23 3.61E-16 6.62E-15 1.26E-07 1.90E+07 <MD A <MD A 1100-562-2MA2 11005622MA2 010323 2/1/2023 11:59 01/03/23 - 02/01/23 6.84E-16 3.07E-16 1.71E-072.84E+07 1.94E-08 0.023%

11005622MA2 020123 3/3/2023 11:04 2/ 01/203 - 3/03/23 0.00E+00 2.72E-16 0.00E+00 3.11E+07 <MD A <MD A 11005622MA2 030323 4/3/2023 14:41 3/03/23 - 4/03/23 9.64E-17 2.68E-16 6.76E-08 3.24E+07 <MD A <MD AGross 11005622MA2 040323 5/4/2023 11:26 4/03/23 - 5/04/23 3.19E-17 1.86E-15 2.25E-08 3.08E+07 <MD A <MD AAlpha 11005622MA2 050423 6/1/2023 15:25 5/04/23 - 6/01/23 6.58E-17 1.91E-15 3.19E-08 1.47E+07 <MD A <MD A 11005622MA2 060123 7/6/2023 15:05 6/01/23 - 7/06/23 8.13E-17 1.57E-15 3.90E-08 3.11E+07 <MD A <MD A 11005622MA2 010323 2/1/2023 11:59 01/03/23 - 02/01/23 9.09E-15 6.00E-15 1.47E-062.84E+07 2.58E-07 0.303%

11005622MA2 020123 3/3/2023 11:04 2/ 01/203 - 3/03/23 7.38E-15 5.33E-15 1.43E-06 3.11E+07 2.29E-07 0.246%

11005622MA2 030323 4/3/2023 14:41 3/03/23 - 4/03/23 7.62E-15 5.25E-15 1.45E-06 3.24E+07 2.47E-07 0.254%Gross 11005622MA2 040323 5/4/2023 11:26 4/03/23 - 5/04/23 1.24E-15 1.23E-14 1.58E-07 3.08E+07 <MD A <MD ABet a 11005622MA2 050423 6/1/2023 15:25 5/04/23 - 6/01/23 8.88E-16 1.27E-14 1.35E-07 1.47E+07 <MD A <MD A 11005622MA2 060123 7/6/2023 15:05 6/01/23 - 7/06/23 7.58E-16 1.04E-14 1.40E-07 3.11E+07 <MD A <MD A

Containe r Re ce ipt and Dispatch Building -1100 (CRDB 1100) Local Ex tract Ex haust (LXGEV S) Gase ous Efflue nt V e nt Sy ste m -Gross Alpha & Be ta Sample Date Result Uncertainty Uncertainty MDC T otal Flow Quantity % of T able 2 of Radionuclide (Off D ate) Sample Period (Ci/ml) (2 sigma) (1 sigma) (Ci/ml) ( m3 ) Re le ase d Appendix B to 10 (Ci/ml) (Ci/ml) (Ci) CFR 20 Values 1100-562-2MA1 Uranium-233/234 1st Qtr 2023 2.83E-16 8.91E-17 9.13E-17 2.82E-17 2.61E-080.009%

Uranium-235/236 1st Qtr 2023 5.01E-17 4.35E-17 4.36E-17 5.00E-17 0.004/3/20231/3/23 - 4/3/239.21E+070.002%

Uranium-238 1st Qtr 2023 2.50E-16 8.41E-17 8.60E-17 4.05E-17 0.00E+000.008%

Uranium-233/234 2nd Qtr 2023 2.44E-16 8.39E-17 8.57E-17 2.92E-17 0.000.008%

Uranium-235/236 2nd Qtr 2023 8.64E-18 2.40E-17 2.40E-17 5.18E-17 Re sult B e lo w MD C7/6/20234/3/23 - 7/6/237.92E+07Re sult B e lo w MD C Uranium-238 2nd Qtr 2023 1.68E-16 7.00E-17 7.10E-17 4.19E-17 0.000.006%

1100-562-2MA2 Uranium-233/234 1st Qtr 2023 6.76E-16 1.86E-16 1.92E-16 5.71E-17 6.21E-080.023%

Uranium-235/236 1st Qtr 2023 8.84E-17 7.67E-17 7.70E-17 8.83E-17 0.004/3/20231/3/23 - 4/3/239.19E+070.003%

Uranium-238 1st Qtr 2023 4.96E-16 1.57E-16 1.61E-16 5.70E-17 0.00E+000.017%

Uranium-233/234 2nd Qtr 2023 2.52E-16 1.02E-16 1.03E-16 4.23E-17 0.000.008%

Uranium-235/236 2nd Qtr 2023 0.00E+00 3.47E-17 3.47E-17 7.50E-17 Re sult B e lo w MD C7/6/20234/3/23 - 7/6/237.66E+07Re sult B e lo w MD C Uranium-238 2nd Qtr 2023 2.11E-16 9.26E-17 9.38E-17 4.22E-17 0.000.007%

Notes: None

1. Ci = Curies
2. µCi/ml = micro-Curies per milliliter.
3. m³ = cubic meters.
4. MDA = minimum detectable activity.
5. MDC= minimum detectable concentration.
6. Quantity released is calculated if the result Equals or Exceeds MDA or MDC.
7. Radionuclides analyzed using Procedure EPA 908.0 Modified by Eberline Analytical Corp of Oak Ridge, TN.
8. G ross alpha and beta analyzed by URENCO USA per procedure EN-3-3030- 01.