ML23089A149

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Enclosure 3: Minimum Decommissioning Cost - Per 10CFR50.75 Formula Process
ML23089A149
Person / Time
Site: Callaway  Ameren icon.png
Issue date: 03/30/2023
From:
Ameren Missouri, Union Electric Co
To:
Office of Nuclear Material Safety and Safeguards, Office of Nuclear Reactor Regulation
Shared Package
ML23089A145 List:
References
ULNRC-06798
Download: ML23089A149 (1)


Text

Enclosure 3 to ULNRC06798 MINIMUM DECOMMISSIONING COST PER 10 CFR 50.75 FORMULA PROCESS

($ Millions)

Updated for 2023 Filing Determine Estimated Decommissioning Costs in 1986 Dollars:

$ 105.00 = 1986$ Cost [ From 10 CFR 50.75 (c)(1)(i) For PWR 3400 MWt ]

Calculate Labor Adjustment Factor (Lx):

3.178 = Lx U. S. Department of Labor, Bureau of Labor Statistics; Employment Cost Index for total compensation, for private industry workers, by bargaining status, census region and division, and metropolitan area status Midwest Region Base Lx = 2.080 (December 2005 = 100)

December2022 ECI = 152.8 (December 2005 = 100)

Lx =[ (Base Lx / 100)

Calculate Energy Adjustment Factor (Ex):

3.443 = Ex From NUREG1307 Revision 19 Ex = Px (Px Coefficient) + Fx (Fx Coefficient) 0.58 = Px Coefficient (For PWR) 0.42 = Fx Coefficient (For PWR)

Determine Px Value 2.451 = Px U. S. Department of Labor, Bureau of Labor Statistics; Producer Price Index Commodities Series ID: WPU0543 Not Seasonally Adjusted Fuels and related products and power Industrial electric power 1982 = 100 January 1986 Value of PPI Series ID WPU0543 = 114.200 December 2022 Value of PPI Series ID WPU0543 = 279.934 Px = December 2022 Value of PPI Series ID WPU0543 / January 1986 Value of PPI Series ID WPU0543 Determine Fx Value 4.813 = Fx U. S. Department of Labor, Bureau of Labor Statistics; Producer Price Index Commodities Series ID: WPU0573 Not Seasonally Adjusted Fuels and related products and power Light fuel oils 1982 = 100 January 1986 Value of PPI Series ID WPU0573 = 82.000 December 2022 Value of PPI Series ID WPU0573 = 394.700 Fx = December 2022 Value of PPI Series ID WPU0573 / January 1986 Value of PPI Series ID WPU0573 Calculate Waste Burial Adjustment Factor (Bx):

13.711 = Bx From NUREG1307 Revision 19 Table 21 Bx Values for Generators Located in the Unaffiliated States and those Located in CompactAffiliated States having no Disposal Facility PWR Calculate the Decommissioning Cost Estimate December 2022$

Estimated Cost (Year x) = [1986$ Cost] * [(A*Lx)+(B*Ex)+(C*Bx)]

0.65 = Lx Coefficient (A) 0.13 = Ex Coefficient (B) 0.22 = Bx Coeficcient (C)

$ 580.597 = Estimated December 2022$ Cost Page 1 of 18 to ULNRC06798 MINIMUM DECOMMISSIONING COST PER 10CFR50.75 FORMULA PROCESS

($ Millions)

Estimated Cost (Year x) = [1986$ Cost] * [(A*Lx)+(B*Ex)+(C*Bx)]

Lx Ex Lx (Use Dec of Ex (Use Dec of Bx Bx Total Estimated 1986 Coefficient Year x 1 Coefficient Year x Coefficient (Use Year x Values Decommissioning Cost Year $ Cost (A) Value) (B) Value) (C) from NUREG1307) (December Year xx $)

Jan1986 $ 105.000 0.65 1.000 0.13 1.000 0.22 1.000 $ 105.000 Dec1986 $ 105.000 0.65 1.028 0.13 0.804 0.22 1.000 $ 104.241 Dec1987 $ 105.000 0.65 1.057 0.13 0.854 0.22 2.007 $ 130.161 Dec1988 $ 105.000 0.65 1.108 0.13 0.820 0.22 2.007 $ 133.150 Dec1989 $ 105.000 0.65 1.152 0.13 0.929 0.22 2.007 $ 137.697 Dec1990 $ 105.000 0.65 1.211 0.13 1.061 0.22 2.494 $ 154.756 Dec1991 $ 105.000 0.65 1.269 0.13 0.954 0.22 2.494 $ 157.227 Dec1992 $ 105.000 0.65 1.313 0.13 0.948 0.22 11.408 $ 366.065 Dec1993 $ 105.000 0.65 1.371 0.13 0.903 0.22 11.873 $ 380.135 Dec1994 $ 105.000 0.65 1.414 0.13 0.927 0.22 12.824 $ 405.364 Dec1995 $ 105.000 0.65 1.451 0.13 0.959 0.22 12.771 $ 407.120 Dec1996 $ 105.000 0.65 1.494 0.13 1.038 0.22 15.852 $ 482.307 Dec1997 $ 105.000 0.65 1.548 0.13 0.956 0.22 15.886 $ 485.671 Dec1998 $ 105.000 0.65 1.599 0.13 0.842 0.22 15.886 $ 487.586 Dec1999 $ 105.000 0.65 1.654 0.13 1.016 0.22 8.052 $ 312.780 Dec2000 $ 105.000 0.65 1.734 0.13 1.189 0.22 8.052 $ 320.549 Dec2001 $ 105.000 0.65 1.793 0.13 0.985 0.22 9.467 $ 354.540 Dec2002 $ 105.000 0.65 1.861 0.13 1.142 0.22 9.467 $ 361.316 Dec2003 $ 105.000 0.65 1.951 0.13 1.216 0.22 7.934 $ 333.013 Dec2004 $ 105.000 0.65 2.012 0.13 1.428 0.22 7.934 $ 340.066 Dec2005 $ 105.000 0.65 2.080 0.13 1.811 0.22 8.683 $ 367.233 Dec2006 $ 105.000 0.65 2.138 0.13 1.879 0.22 8.683 $ 372.126 Dec2007 $ 105.000 0.65 2.190 0.13 2.280 0.22 9.872 $ 408.621 Dec2008 $ 105.000 0.65 2.238 0.13 1.791 0.22 9.872 $ 405.211 Dec2009 $ 105.000 0.65 2.258 0.13 1.956 0.22 12.280 $ 464.508 Dec2010 $ 105.000 0.65 2.315 0.13 2.253 0.22 12.280 $ 472.385 Dec2011 $ 105.000 0.65 2.369 0.13 2.580 0.22 12.280 $ 480.542 Dec2012 $ 105.000 0.65 2.410 0.13 2.639 0.22 13.885 $ 521.269 Dec2013 $ 105.000 0.65 2.450 0.13 2.570 0.22 13.885 $ 523.015 Dec2014 $ 105.000 0.65 2.502 0.13 2.208 0.22 13.885 $ 521.620 Dec2015 $ 105.000 0.65 2.547 0.13 1.762 0.22 12.471 $ 486.003 Dec2016 $ 105.000 0.65 2.614 0.13 1.860 0.22 12.471 $ 491.882 Dec2017 $ 105.000 0.65 2.672 0.13 2.295 0.22 12.853 $ 510.614 Dec2018 $ 105.000 0.65 2.751 0.13 2.359 0.22 12.853 $ 516.873 Dec2019 $ 105.000 0.65 2.822 0.13 2.305 0.22 12.853 $ 520.969 Dec2020 $ 105.000 0.65 2.893 0.13 2.255 0.22 12.793 $ 523.724 Dec2021 $ 105.000 0.65 3.026 0.13 2.933 0.22 12.793 $ 542.061 Dec2022 $ 105.000 0.65 3.178 0.13 3.443 0.22 13.711 $ 580.597 NRC Minimum Cost Estimates ($ Millions) 700 600 500 400

$ Millions 300 200 100 0

to ULNRC06798 MINIMUM DECOMMISSIONING COST PER 10 CFR 50.75 FORMULA PROCESS Labor Adjustment Factor (Lx) Derivation 124.6 = Dec 1985 Index Value June 1981 = 100 1.409 = Multiplier: Conversion of June 1989 = 100 Index Values to June 1981 = 100 Index Values 1.839 = Multiplier: Conversion of Dec 2005 = 100 Index Values to June 1989 = 100 Index Values Lx Index Date Index Value Index Base Year Index Value Index Base Year Index Value Index Base Year At Index date Mar 1986 125.9 June 1981 = 100 1.010 Jun 1986 126.2 June 1981 = 100 1.013 Sep 1986 127.3 June 1981 = 100 1.022 Dec 1986 128.1 June 1981 = 100 1.028 Mar 1987 129.1 June 1981 = 100 1.036 Jun 1987 130.2 June 1981 = 100 1.045 Sep 1987 131.2 June 1981 = 100 1.053 Dec 1987 131.7 June 1981 = 100 1.057 Mar 1988 134.4 June 1981 = 100 1.079 Jun 1988 135.5 June 1981 = 100 1.087 Sep 1988 136.7 June 1981 = 100 1.097 Dec 1988 138.0 June 1981 = 100 1.108 Mar 1989 139.3 June 1981 = 100 98.9 June 1989 = 100 1.118 Jun 1989 140.9 June 1981 = 100 100.0 June 1989 = 100 1.131 Sep 1989 142.3 June 1981 = 100 101.0 June 1989 = 100 1.142 Dec 1989 143.6 June 1981 = 100 101.9 June 1989 = 100 1.152 Mar 1990 145.8 103.5 June 1989 = 100 1.170 Jun 1990 147.7 104.8 June 1989 = 100 1.185 Sep 1990 149.8 106.3 June 1989 = 100 1.202 Dec 1990 150.9 107.1 June 1989 = 100 1.211 Mar 1991 152.9 108.5 June 1989 = 100 1.227 Jun 1991 154.6 109.7 June 1989 = 100 1.241 Sep 1991 156.7 111.2 June 1989 = 100 1.257 Dec 1991 158.1 112.2 June 1989 = 100 1.269 Mar 1992 160.3 113.8 June 1989 = 100 1.287 Jun 1992 161.5 114.6 June 1989 = 100 1.296 Sep 1992 162.5 115.3 June 1989 = 100 1.304 Dec 1992 163.6 116.1 June 1989 = 100 1.313 Mar 1993 166.1 117.9 June 1989 = 100 1.333 Jun 1993 168.1 119.3 June 1989 = 100 1.349 Sep 1993 169.2 120.1 June 1989 = 100 1.358 Dec 1993 170.8 121.2 June 1989 = 100 1.371 Mar 1994 173.0 122.8 June 1989 = 100 1.389 Jun 1994 174.2 123.6 June 1989 = 100 1.398 Sep 1994 175.6 124.6 June 1989 = 100 1.409 Dec 1994 176.1 125.0 June 1989 = 100 1.414 Mar 1995 177.3 125.8 June 1989 = 100 1.423 Jun 1995 178.8 126.9 June 1989 = 100 1.435 Sep 1995 179.9 127.7 June 1989 = 100 1.444 Dec 1995 180.8 128.3 June 1989 = 100 1.451 Mar 1996 182.5 129.5 June 1989 = 100 1.464 Jun 1996 184.2 130.7 June 1989 = 100 1.478 Sep 1996 185.0 131.3 June 1989 = 100 1.485 Dec 1996 186.1 132.1 June 1989 = 100 1.494 Mar 1997 187.8 133.3 June 1989 = 100 1.507 Jun 1997 189.8 134.7 June 1989 = 100 1.523 Sep 1997 191.9 136.2 June 1989 = 100 1.540 Dec 1997 192.9 136.9 June 1989 = 100 1.548 Mar 1998 194.9 138.3 June 1989 = 100 1.564 Jun 1998 196.7 139.6 June 1989 = 100 1.579 Sep 1998 198.5 140.9 June 1989 = 100 1.593 Dec 1998 199.2 141.4 June 1989 = 100 1.599 Mar 1999 199.7 141.7 June 1989 = 100 1.602 Jun 1999 202.3 143.6 June 1989 = 100 1.624 Sep 1999 204.3 145.0 June 1989 = 100 1.640 Dec 1999 206.1 146.3 June 1989 = 100 1.654 Mar 2000 209.8 148.9 June 1989 = 100 1.684 Page 3 of 18 to ULNRC06798 MINIMUM DECOMMISSIONING COST PER 10 CFR 50.75 FORMULA PROCESS Labor Adjustment Factor (Lx) Derivation 124.6 = Dec 1985 Index Value June 1981 = 100 1.409 = Multiplier: Conversion of June 1989 = 100 Index Values to June 1981 = 100 Index Values 1.839 = Multiplier: Conversion of Dec 2005 = 100 Index Values to June 1989 = 100 Index Values Lx Index Date Index Value Index Base Year Index Value Index Base Year Index Value Index Base Year At Index date Jun 2000 212.3 150.7 June 1989 = 100 1.704 Sep 2000 214.4 152.2 June 1989 = 100 1.721 Dec 2000 216.0 153.3 June 1989 = 100 1.734 Mar 2001 218.1 154.8 June 1989 = 100 84.8 Dec 2005 = 100 1.751 Jun 2001 219.8 156.0 June 1989 = 100 85.4 Dec 2005 = 100 1.764 Sep 2001 221.8 157.4 June 1989 = 100 86.1 Dec 2005 = 100 1.780 Dec 2001 223.5 158.6 June 1989 = 100 86.7 Dec 2005 = 100 1.793 Mar 2002 227.0 161.1 June 1989 = 100 88.0 Dec 2005 = 100 1.822 Jun 2002 229.1 162.6 June 1989 = 100 88.7 Dec 2005 = 100 1.839 Sep 2002 230.4 163.5 June 1989 = 100 89.0 Dec 2005 = 100 1.849 Dec 2002 231.9 164.6 June 1989 = 100 89.5 Dec 2005 = 100 1.861 Mar 2003 238.1 169.0 June 1989 = 100 92.1 Dec 2005 = 100 1.911 Jun 2003 240.1 170.4 June 1989 = 100 92.8 Dec 2005 = 100 1.927 Sep 2003 241.9 171.7 June 1989 = 100 93.6 Dec 2005 = 100 1.942 Dec 2003 243.1 172.5 June 1989 = 100 94.0 Dec 2005 = 100 1.951 Mar 2004 246.2 174.7 June 1989 = 100 95.0 Dec 2005 = 100 1.976 Jun 2004 248.3 176.2 June 1989 = 100 95.9 Dec 2005 = 100 1.993 Sep 2004 250.2 177.6 June 1989 = 100 96.6 Dec 2005 = 100 2.008 Dec 2004 250.7 177.9 June 1989 = 100 96.9 Dec 2005 = 100 2.012 Mar 2005 253.6 180.0 June 1989 = 100 97.8 Dec 2005 = 100 2.035 Jun 2005 254.9 180.9 June 1989 = 100 98.4 Dec 2005 = 100 2.046 Sep 2005 257.8 183.0 June 1989 = 100 99.5 Dec 2005 = 100 2.069 Dec 2005 259.1 183.9 June 1989 = 100 100.0 Dec 2005 = 100 2.080 Mar 2006 260.9 185.2 100.7 Dec 2005 = 100 2.094 Jun 2006 263.5 187.0 101.7 Dec 2005 = 100 2.115 Sep 2006 265.1 188.1 102.3 Dec 2005 = 100 2.127 Dec 2006 266.4 189.0 102.8 Dec 2005 = 100 2.138 Mar 2007 267.7 190.0 103.3 Dec 2005 = 100 2.148 Jun 2007 270.0 191.6 104.2 Dec 2005 = 100 2.167 Sep 2007 271.0 192.4 104.6 Dec 2005 = 100 2.175 Dec 2007 272.8 193.6 105.3 Dec 2005 = 100 2.190 Mar 2008 274.7 194.9 106.0 Dec 2005 = 100 2.204 Jun 2008 277.3 196.8 107.0 Dec 2005 = 100 2.225 Sep 2008 278.3 197.5 107.4 Dec 2005 = 100 2.233 Dec 2008 278.8 197.9 107.6 Dec 2005 = 100 2.238 Mar 2009 279.6 198.4 107.9 Dec 2005 = 100 2.244 Jun 2009 280.1 198.8 108.1 Dec 2005 = 100 2.248 Sep 2009 280.9 199.3 108.4 Dec 2005 = 100 2.254 Dec 2009 281.4 199.7 108.6 Dec 2005 = 100 2.258 Mar 2010 284.8 202.1 109.9 Dec 2005 = 100 2.285 Jun 2010 286.1 203.0 110.4 Dec 2005 = 100 2.296 Sep 2010 287.6 204.1 111.0 Dec 2005 = 100 2.308 Dec 2010 288.4 204.7 111.3 Dec 2005 = 100 2.315 Mar 2011 290.7 206.3 112.2 Dec 2005 = 100 2.333 Jun 2011 293.6 208.4 113.3 Dec 2005 = 100 2.356 Sep 2011 294.4 208.9 113.6 Dec 2005 = 100 2.362 Dec 2011 295.1 209.5 113.9 Dec 2005 = 100 2.369 Mar 2012 297.2 210.9 114.7 Dec 2005 = 100 2.385 Jun 2012 298.8 212.0 115.3 Dec 2005 = 100 2.398 Sep 2012 299.5 212.6 115.6 Dec 2005 = 100 2.404 Dec 2012 300.3 213.1 115.9 Dec 2005 = 100 2.410 Mar 2013 301.6 214.1 116.4 Dec 2005 = 100 2.421 Jun 2013 303.2 215.2 117.0 Dec 2005 = 100 2.433 Sep 2013 304.2 215.9 117.4 Dec 2005 = 100 2.441 Dec 2013 305.2 216.6 117.8 Dec 2005 = 100 2.450 Mar 2014 306.8 217.7 118.4 Dec 2005 = 100 2.462 Jun 2014 309.6 219.8 119.5 Dec 2005 = 100 2.485 Page 4 of 18 to ULNRC06798 MINIMUM DECOMMISSIONING COST PER 10 CFR 50.75 FORMULA PROCESS Labor Adjustment Factor (Lx) Derivation 124.6 = Dec 1985 Index Value June 1981 = 100 1.409 = Multiplier: Conversion of June 1989 = 100 Index Values to June 1981 = 100 Index Values 1.839 = Multiplier: Conversion of Dec 2005 = 100 Index Values to June 1989 = 100 Index Values Lx Index Date Index Value Index Base Year Index Value Index Base Year Index Value Index Base Year At Index date Sep 2014 310.9 220.7 120.0 Dec 2005 = 100 2.495 Dec 2014 311.7 221.2 120.3 Dec 2005 = 100 2.502 Mar 2015 314.0 222.9 121.2 Dec 2005 = 100 2.520 Jun 2015 314.6 223.3 121.4 Dec 2005 = 100 2.525 Sep 2015 316.4 224.5 122.1 Dec 2005 = 100 2.539 Dec 2015 317.4 225.3 122.5 Dec 2005 = 100 2.547 Mar 2016 319.7 226.9 123.4 Dec 2005 = 100 2.566 Jun 2016 322.6 229.0 124.5 Dec 2005 = 100 2.589 Sep 2016 324.7 230.4 125.3 Dec 2005 = 100 2.606 Dec 2016 325.7 231.2 125.7 Dec 2005 = 100 2.614 Mar 2017 328.6 233.2 126.8 Dec 2005 = 100 2.637 Jun 2017 330.1 234.3 127.4 Dec 2005 = 100 2.649 Sep 2017 331.7 235.4 128.0 Dec 2005 = 100 2.662 Dec 2017 333.0 236.3 128.5 Dec 2005 = 100 2.672 Mar 2018 336.3 238.7 129.8 Dec 2005 = 100 2.699 Jun 2018 338.4 240.2 130.6 Dec 2005 = 100 2.716 Sep 2018 341.0 242.0 131.6 Dec 2005 = 100 2.737 Dec 2018 342.8 243.3 132.3 Dec 2005 = 100 2.751 Mar 2019 345.9 245.5 133.5 Dec 2005 = 100 2.776 Jun 2019 347.5 246.6 134.1 Dec 2005 = 100 2.789 Sep 2019 349.8 248.3 135.0 Dec 2005 = 100 2.807 Dec 2019 351.6 249.6 135.7 Dec 2005 = 100 2.822 Mar 2020 356.3 252.9 137.5 Dec 2005 = 100 2.859 Jun 2020 356.5 253.0 137.6 Dec 2005 = 100 2.861 Sep 2020 358.1 254.1 138.2 Dec 2005 = 100 2.874 Dec 2020 360.4 255.8 139.1 Dec 2005 = 100 2.893 Mar 2021 364.6 258.7 140.7 Dec 2005 = 100 2.926 Jun 2021 367.4 260.8 141.8 Dec 2005 = 100 2.949 Sep 2021 371.8 263.9 143.5 Dec 2005 = 100 2.984 Dec 2021 377.0 267.6 145.5 Dec 2005 = 100 3.026 Mar 2022 383.2 272.0 147.9 Dec 2005 = 100 3.076 Jun 2022 388.4 275.7 149.9 Dec 2005 = 100 3.117 Sep 2022 393.3 279.2 151.8 Dec 2005 = 100 3.157 Dec 2022 395.9 281.0 152.8 Dec 2005 = 100 3.178 Employment Cost Index Original Data Value Series Id: CIU2010000000230I Not seasonally adjusted Series

Title:

Total compensation for Private industry workers in Midwest, Index Ownership: Private industry workers Component: Total compensation Occupation: All workers Industry: All workers Subcategory: All workers Area: Midwest census region Page 5 of 18 to ULNRC06798 MINIMUM DECOMMISSIONING COST PER 10 CFR 50.75 FORMULA PROCESS Energy Adjustment Factor (Ex) Derivation Ex = Px (Px Coefficient) + Fx (Fx Coefficient) 0.58 = Px Coefficient (For PWR) 0.42 = Fx Coefficient (For PWR)

Preliminary Px Fx Index Date WPU0543 WPU0573 Ex Dec 1985 112.9 89.400 Jan 1986 114.2 1.000 82.000 1.000 1.000 Feb 1986 115.0 1.007 62.400 0.761 0.904 Mar 1986 114.4 1.002 51.300 0.626 0.844 Apr 1986 113.7 0.996 49.800 0.607 0.833 May 1986 114.1 0.999 47.000 0.573 0.820 Jun 1986 115.3 1.010 44.700 0.545 0.815 Jul 1986 116.2 1.018 36.400 0.444 0.777 Aug 1986 116.3 1.018 40.100 0.489 0.796 Sep 1986 116.3 1.018 46.300 0.565 0.828 Oct 1986 113.0 0.989 43.100 0.526 0.795 Nov 1986 112.7 0.987 43.500 0.530 0.795 Dec 1986 112.3 0.983 45.600 0.556 0.804 Jan 1987 110.3 0.966 51.400 0.627 0.823 Feb 1987 109.8 0.961 53.100 0.648 0.830 Mar 1987 110.2 0.965 49.700 0.606 0.814 Apr 1987 109.9 0.962 52.000 0.634 0.825 May 1987 111.8 0.979 53.300 0.650 0.841 Jun 1987 113.9 0.997 55.100 0.672 0.861 Jul 1987 116.2 1.018 56.300 0.687 0.879 Aug 1987 115.7 1.013 59.400 0.724 0.892 Sep 1987 115.5 1.011 56.800 0.693 0.878 Oct 1987 111.0 0.972 59.300 0.723 0.867 Nov 1987 109.2 0.956 61.200 0.746 0.868 Dec 1987 109.6 0.960 58.100 0.709 0.854 Jan 1988 108.8 0.953 54.800 0.668 0.833 Feb 1988 109.0 0.954 51.500 0.628 0.817 Mar 1988 109.0 0.954 49.700 0.606 0.808 Apr 1988 109.1 0.955 53.300 0.650 0.827 May 1988 108.9 0.954 54.300 0.662 0.831 Jun 1988 117.2 1.026 50.600 0.617 0.854 Jul 1988 118.2 1.035 46.900 0.572 0.841 Aug 1988 118.3 1.036 46.800 0.571 0.841 Sep 1988 118.5 1.038 45.900 0.560 0.837 Oct 1988 114.2 1.000 42.300 0.516 0.797 Nov 1988 109.2 0.956 47.200 0.576 0.796 Dec 1988 110.5 0.968 50.600 0.617 0.820 Jan 1989 112.0 0.981 54.900 0.670 0.850 Feb 1989 112.0 0.981 54.000 0.659 0.845 Mar 1989 112.3 0.983 57.300 0.699 0.864 Apr 1989 112.4 0.984 61.500 0.750 0.886 May 1989 113.6 0.995 57.500 0.701 0.871 Jun 1989 119.8 1.049 53.300 0.650 0.881 Jul 1989 122.2 1.070 52.700 0.643 0.891 Page 6 of 18 to ULNRC06798 MINIMUM DECOMMISSIONING COST PER 10 CFR 50.75 FORMULA PROCESS Energy Adjustment Factor (Ex) Derivation Ex = Px (Px Coefficient) + Fx (Fx Coefficient) 0.58 = Px Coefficient (For PWR) 0.42 = Fx Coefficient (For PWR)

Preliminary Px Fx Index Date WPU0543 WPU0573 Ex Aug 1989 122.4 1.072 53.500 0.652 0.896 Sep 1989 122.5 1.073 59.300 0.723 0.926 Oct 1989 117.2 1.026 64.000 0.780 0.923 Nov 1989 113.5 0.994 64.400 0.785 0.906 Dec 1989 114.2 1.000 68.100 0.830 0.929 Jan 1990 114.9 1.006 85.300 1.040 1.020 Feb 1990 115.0 1.007 59.400 0.724 0.888 Mar 1990 115.4 1.011 60.400 0.737 0.895 Apr 1990 115.1 1.008 61.000 0.744 0.897 May 1990 117.0 1.025 58.400 0.712 0.893 Jun 1990 123.9 1.085 53.000 0.646 0.901 Jul 1990 124.4 1.089 51.600 0.629 0.896 Aug 1990 124.6 1.091 72.300 0.882 1.003 Sep 1990 125.0 1.095 87.300 1.065 1.082 Oct 1990 121.2 1.061 104.800 1.278 1.152 Nov 1990 120.2 1.053 98.900 1.206 1.117 Dec 1990 118.9 1.041 89.300 1.089 1.061 Jan 1991 124.2 1.088 82.900 1.011 1.055 Feb 1991 124.3 1.088 74.300 0.906 1.012 Mar 1991 124.3 1.088 61.600 0.751 0.947 Apr 1991 124.7 1.092 60.000 0.732 0.941 May 1991 128.2 1.123 59.600 0.727 0.956 Jun 1991 132.6 1.161 57.600 0.702 0.968 Jul 1991 134.5 1.178 58.100 0.709 0.981 Aug 1991 133.8 1.172 62.100 0.757 0.998 Sep 1991 133.8 1.172 65.400 0.798 1.015 Oct 1991 128.3 1.123 67.600 0.824 0.998 Nov 1991 123.1 1.078 71.000 0.866 0.989 Dec 1991 125.1 1.095 62.200 0.759 0.954 Jan 1992 125.9 1.102 54.400 0.663 0.918 Feb 1992 125.3 1.097 57.300 0.699 0.930 Mar 1992 125.8 1.102 56.000 0.683 0.926 Apr 1992 124.8 1.093 59.000 0.720 0.936 May 1992 128.5 1.125 62.100 0.757 0.971 Jun 1992 134.8 1.180 65.400 0.798 1.020 Jul 1992 135.6 1.187 64.600 0.788 1.020 Aug 1992 135.1 1.183 63.300 0.772 1.010 Sep 1992 135.9 1.190 65.600 0.800 1.026 Oct 1992 131.2 1.149 68.200 0.832 1.016 Nov 1992 125.5 1.099 64.200 0.783 0.966 Dec 1992 126.7 1.109 59.400 0.724 0.948 Jan 1993 127.1 1.113 59.000 0.720 0.948 Feb 1993 126.4 1.107 60.400 0.737 0.951 Mar 1993 126.7 1.109 63.200 0.771 0.967 Page 7 of 18 to ULNRC06798 MINIMUM DECOMMISSIONING COST PER 10 CFR 50.75 FORMULA PROCESS Energy Adjustment Factor (Ex) Derivation Ex = Px (Px Coefficient) + Fx (Fx Coefficient) 0.58 = Px Coefficient (For PWR) 0.42 = Fx Coefficient (For PWR)

Preliminary Px Fx Index Date WPU0543 WPU0573 Ex Apr 1993 126.8 1.110 62.400 0.761 0.964 May 1993 127.5 1.116 62.600 0.763 0.968 Jun 1993 136.9 1.199 60.800 0.741 1.007 Jul 1993 137.1 1.201 57.000 0.695 0.988 Aug 1993 137.2 1.201 54.400 0.663 0.975 Sep 1993 137.6 1.205 59.300 0.723 1.003 Oct 1993 131.9 1.155 65.400 0.798 1.005 Nov 1993 126.3 1.106 61.600 0.751 0.957 Dec 1993 126.0 1.103 51.400 0.627 0.903 Jan 1994 126.2 1.105 51.500 0.628 0.905 Feb 1994 125.9 1.102 57.500 0.701 0.934 Mar 1994 125.8 1.102 56.200 0.685 0.927 Apr 1994 125.4 1.098 54.700 0.667 0.917 May 1994 126.0 1.103 54.700 0.667 0.920 Jun 1994 133.5 1.169 54.100 0.660 0.955 Jul 1994 134.5 1.178 56.300 0.687 0.971 Aug 1994 134.5 1.178 57.500 0.701 0.978 Sep 1994 134.9 1.181 57.700 0.704 0.981 Oct 1994 129.1 1.130 57.700 0.704 0.951 Nov 1994 127.0 1.112 58.800 0.717 0.946 Dec 1994 127.4 1.116 54.700 0.667 0.927 Jan 1995 127.6 1.117 54.700 0.667 0.928 Feb 1995 128.0 1.121 53.300 0.650 0.923 Mar 1995 128.3 1.123 54.300 0.662 0.930 Apr 1995 126.4 1.107 57.100 0.696 0.934 May 1995 130.2 1.140 59.100 0.721 0.964 Jun 1995 135.3 1.185 55.800 0.680 0.973 Jul 1995 136.6 1.196 53.500 0.652 0.968 Aug 1995 136.5 1.195 55.600 0.678 0.978 Sep 1995 133.7 1.171 58.200 0.710 0.977 Oct 1995 131.4 1.151 57.800 0.705 0.963 Nov 1995 127.6 1.117 59.500 0.726 0.953 Dec 1995 127.7 1.118 60.600 0.739 0.959 Jan 1996 127.9 1.120 62.600 0.763 0.970 Feb 1996 127.1 1.113 59.700 0.728 0.951 Mar 1996 127.8 1.119 63.500 0.774 0.974 Apr 1996 129.1 1.130 74.700 0.911 1.038 May 1996 135.0 1.182 72.000 0.878 1.054 Jun 1996 137.5 1.204 62.800 0.766 1.020 Jul 1996 136.0 1.191 64.300 0.784 1.020 Aug 1996 136.2 1.193 66.500 0.811 1.032 Sep 1996 136.2 1.193 73.400 0.895 1.068 Oct 1996 131.2 1.149 79.700 0.972 1.075 Nov 1996 127.1 1.113 76.500 0.933 1.037 Page 8 of 18 to ULNRC06798 MINIMUM DECOMMISSIONING COST PER 10 CFR 50.75 FORMULA PROCESS Energy Adjustment Factor (Ex) Derivation Ex = Px (Px Coefficient) + Fx (Fx Coefficient) 0.58 = Px Coefficient (For PWR) 0.42 = Fx Coefficient (For PWR)

Preliminary Px Fx Index Date WPU0543 WPU0573 Ex Dec 1996 127.7 1.118 76.100 0.928 1.038 Jan 1997 128.3 1.123 73.700 0.899 1.029 Feb 1997 128.1 1.122 72.300 0.882 1.021 Mar 1997 128.2 1.123 65.200 0.795 0.985 Apr 1997 127.3 1.115 65.300 0.796 0.981 May 1997 129.7 1.136 64.200 0.783 0.988 Jun 1997 135.1 1.183 60.800 0.741 0.998 Jul 1997 135.9 1.190 57.800 0.705 0.986 Aug 1997 134.7 1.180 61.500 0.750 0.999 Sep 1997 136.0 1.191 60.400 0.737 1.000 Oct 1997 130.1 1.139 64.800 0.790 0.993 Nov 1997 127.9 1.120 65.800 0.802 0.987 Dec 1997 128.3 1.123 59.400 0.724 0.956 Jan 1998 127.4 1.116 54.100 0.660 0.924 Feb 1998 127.2 1.114 52.000 0.634 0.912 Mar 1998 126.7 1.109 48.300 0.589 0.891 Apr 1998 126.4 1.107 50.200 0.612 0.899 May 1998 129.2 1.131 50.000 0.610 0.912 Jun 1998 133.8 1.172 46.300 0.565 0.917 Jul 1998 134.8 1.180 45.000 0.549 0.915 Aug 1998 135.2 1.184 44.000 0.537 0.912 Sep 1998 135.2 1.184 48.300 0.589 0.934 Oct 1998 130.4 1.142 47.400 0.578 0.905 Nov 1998 127.6 1.117 46.200 0.563 0.885 Dec 1998 126.6 1.109 38.800 0.473 0.842 Jan 1999 126.1 1.104 40.900 0.499 0.850 Feb 1999 125.5 1.099 38.200 0.466 0.833 Mar 1999 125.5 1.099 42.800 0.522 0.857 Apr 1999 125.2 1.096 52.500 0.640 0.905 May 1999 127.4 1.116 52.600 0.641 0.916 Jun 1999 131.6 1.152 52.400 0.639 0.937 Jul 1999 133.9 1.173 58.700 0.716 0.981 Aug 1999 133.9 1.173 63.000 0.768 1.003 Sep 1999 134.1 1.174 67.600 0.824 1.027 Oct 1999 129.5 1.134 65.500 0.799 0.993 Nov 1999 127.5 1.116 71.300 0.870 1.013 Dec 1999 126.5 1.108 72.900 0.889 1.016 Jan 2000 126.8 1.110 75.300 0.918 1.030 Feb 2000 126.7 1.109 87.900 1.072 1.094 Mar 2000 126.7 1.109 89.700 1.094 1.103 Apr 2000 126.8 1.110 83.100 1.013 1.070 May 2000 128.6 1.126 82.900 1.011 1.078 Jun 2000 133.6 1.170 86.200 1.051 1.120 Jul 2000 136.2 1.193 88.700 1.082 1.146 Page 9 of 18 to ULNRC06798 MINIMUM DECOMMISSIONING COST PER 10 CFR 50.75 FORMULA PROCESS Energy Adjustment Factor (Ex) Derivation Ex = Px (Px Coefficient) + Fx (Fx Coefficient) 0.58 = Px Coefficient (For PWR) 0.42 = Fx Coefficient (For PWR)

Preliminary Px Fx Index Date WPU0543 WPU0573 Ex Aug 2000 137.4 1.203 91.600 1.117 1.167 Sep 2000 137.8 1.207 110.100 1.343 1.264 Oct 2000 134.1 1.174 108.600 1.324 1.237 Nov 2000 130.9 1.146 108.400 1.322 1.220 Dec 2000 132.7 1.162 100.600 1.227 1.189 Jan 2001 136.4 1.194 96.100 1.172 1.185 Feb 2001 136.4 1.194 91.600 1.117 1.162 Mar 2001 136.5 1.195 83.100 1.013 1.119 Apr 2001 135.1 1.183 86.200 1.051 1.128 May 2001 136.2 1.193 94.200 1.149 1.174 Jun 2001 148.4 1.299 90.200 1.100 1.216 Jul 2001 149.5 1.309 81.300 0.991 1.176 Aug 2001 148.9 1.304 83.200 1.015 1.182 Sep 2001 148.2 1.298 93.000 1.134 1.229 Oct 2001 143.8 1.259 76.800 0.937 1.124 Nov 2001 137.3 1.202 70.500 0.860 1.058 Dec 2001 136.9 1.199 56.600 0.690 0.985 Jan 2002 136.3 1.194 58.300 0.711 0.991 Feb 2002 135.4 1.186 59.600 0.727 0.993 Mar 2002 135.7 1.188 69.100 0.843 1.043 Apr 2002 135.4 1.186 76.400 0.932 1.079 May 2002 137.9 1.208 75.000 0.915 1.085 Jun 2002 143.6 1.257 71.400 0.871 1.095 Jul 2002 144.9 1.269 75.500 0.921 1.123 Aug 2002 145.0 1.270 77.900 0.950 1.135 Sep 2002 145.8 1.277 89.500 1.091 1.199 Oct 2002 140.0 1.226 95.100 1.160 1.198 Nov 2002 139.5 1.222 82.800 1.010 1.133 Dec 2002 139.6 1.222 84.600 1.032 1.142 Jan 2003 140.3 1.229 95.700 1.167 1.203 Feb 2003 140.6 1.231 120.400 1.468 1.331 Mar 2003 143.3 1.255 128.900 1.572 1.388 Apr 2003 144.3 1.264 98.300 1.199 1.236 May 2003 145.1 1.271 85.500 1.043 1.175 Jun 2003 148.3 1.299 87.200 1.063 1.200 Jul 2003 151.6 1.327 90.100 1.099 1.231 Aug 2003 151.3 1.325 94.100 1.148 1.250 Sep 2003 152.0 1.331 88.200 1.076 1.224 Oct 2003 147.4 1.291 97.800 1.193 1.250 Nov 2003 142.7 1.250 93.000 1.134 1.201 Dec 2003 142.9 1.251 95.800 1.168 1.216 Jan 2004 143.1 1.253 106.800 1.302 1.274 Feb 2004 143.1 1.253 100.800 1.229 1.243 Mar 2004 143.1 1.253 107.800 1.315 1.279 Page 10 of 18 to ULNRC06798 MINIMUM DECOMMISSIONING COST PER 10 CFR 50.75 FORMULA PROCESS Energy Adjustment Factor (Ex) Derivation Ex = Px (Px Coefficient) + Fx (Fx Coefficient) 0.58 = Px Coefficient (For PWR) 0.42 = Fx Coefficient (For PWR)

Preliminary Px Fx Index Date WPU0543 WPU0573 Ex Apr 2004 143.1 1.253 115.200 1.405 1.317 May 2004 144.2 1.263 116.000 1.415 1.327 Jun 2004 152.4 1.335 111.500 1.360 1.345 Jul 2004 152.2 1.333 119.300 1.455 1.384 Aug 2004 154.0 1.349 131.100 1.599 1.454 Sep 2004 154.0 1.349 136.800 1.668 1.483 Oct 2004 145.8 1.277 161.700 1.972 1.569 Nov 2004 144.9 1.269 153.600 1.873 1.523 Dec 2004 146.2 1.280 133.800 1.632 1.428 Jan 2005 148.9 1.304 138.500 1.689 1.466 Feb 2005 148.0 1.296 146.000 1.780 1.499 Mar 2005 148.1 1.297 169.400 2.066 1.620 Apr 2005 148.7 1.302 170.900 2.084 1.631 May 2005 151.1 1.323 165.300 2.016 1.614 Jun 2005 159.7 1.398 180.600 2.202 1.736 Jul 2005 162.1 1.419 186.200 2.271 1.777 Aug 2005 162.5 1.423 194.500 2.372 1.822 Sep 2005 162.8 1.426 209.900 2.560 1.902 Oct 2005 159.5 1.397 252.000 3.073 2.101 Nov 2005 161.1 1.411 199.100 2.428 1.838 Dec 2005 161.4 1.413 193.600 2.361 1.811 Jan 2006 167.0 1.462 191.800 2.339 1.831 Feb 2006 168.6 1.476 190.000 2.317 1.829 Mar 2006 167.4 1.466 199.200 2.429 1.870 Apr 2006 169.6 1.485 221.900 2.706 1.998 May 2006 170.8 1.496 231.400 2.822 2.053 Jun 2006 181.2 1.587 238.100 2.904 2.140 Jul 2006 181.9 1.593 231.600 2.824 2.110 Aug 2006 180.2 1.578 241.400 2.944 2.152 Sep 2006 181.0 1.585 203.100 2.477 1.960 Oct 2006 171.2 1.499 198.100 2.416 1.884 Nov 2006 167.2 1.464 198.200 2.417 1.864 Dec 2006 167.8 1.469 200.400 2.444 1.879 Jan 2007 171.9 1.505 180.000 2.195 1.795 Feb 2007 175.7 1.539 191.500 2.335 1.873 Mar 2007 172.1 1.507 215.100 2.623 1.976 Apr 2007 173.1 1.516 231.800 2.827 2.066 May 2007 179.2 1.569 225.300 2.748 2.064 Jun 2007 186.7 1.635 222.400 2.712 2.087 Jul 2007 187.0 1.637 237.800 2.900 2.168 Aug 2007 187.6 1.643 225.500 2.750 2.108 Sep 2007 188.4 1.650 238.900 2.913 2.180 Oct 2007 182.7 1.600 243.300 2.967 2.174 Nov 2007 180.3 1.579 288.200 3.515 2.392 Page 11 of 18 to ULNRC06798 MINIMUM DECOMMISSIONING COST PER 10 CFR 50.75 FORMULA PROCESS Energy Adjustment Factor (Ex) Derivation Ex = Px (Px Coefficient) + Fx (Fx Coefficient) 0.58 = Px Coefficient (For PWR) 0.42 = Fx Coefficient (For PWR)

Preliminary Px Fx Index Date WPU0543 WPU0573 Ex Dec 2007 180.0 1.576 266.700 3.252 2.280 Jan 2008 181.9 1.593 273.800 3.339 2.326 Feb 2008 180.0 1.576 280.200 3.417 2.349 Mar 2008 183.1 1.603 339.600 4.141 2.669 Apr 2008 185.2 1.622 352.500 4.299 2.746 May 2008 189.5 1.659 384.900 4.694 2.934 Jun 2008 191.9 1.680 410.500 5.006 3.077 Jul 2008 196.1 1.717 423.800 5.168 3.167 Aug 2008 197.1 1.726 343.900 4.194 2.762 Sep 2008 195.9 1.715 335.100 4.087 2.711 Oct 2008 193.0 1.690 279.000 3.402 2.409 Nov 2008 187.7 1.644 218.200 2.661 2.071 Dec 2008 188.3 1.649 163.000 1.988 1.791 Jan 2009 190.3 1.666 159.800 1.949 1.785 Feb 2009 190.3 1.666 145.600 1.776 1.712 Mar 2009 187.6 1.643 136.800 1.668 1.653 Apr 2009 186.9 1.637 159.900 1.950 1.768 May 2009 190.5 1.668 158.600 1.934 1.780 Jun 2009 193.3 1.693 183.700 2.240 1.923 Jul 2009 196.2 1.718 165.200 2.015 1.843 Aug 2009 194.7 1.705 196.100 2.391 1.993 Sep 2009 194.9 1.707 186.600 2.276 1.946 Oct 2009 189.9 1.663 193.300 2.357 1.955 Nov 2009 186.0 1.629 207.800 2.534 2.009 Dec 2009 186.0 1.629 197.500 2.409 1.956 Jan 2010 186.3 1.631 220.700 2.691 2.077 Feb 2010 186.1 1.630 200.200 2.441 1.971 Mar 2010 189.0 1.655 217.000 2.646 2.071 Apr 2010 188.8 1.653 231.500 2.823 2.145 May 2010 192.0 1.681 226.000 2.756 2.133 Jun 2010 197.8 1.732 212.400 2.590 2.092 Jul 2010 199.8 1.750 209.300 2.552 2.087 Aug 2010 200.8 1.758 221.400 2.700 2.154 Sep 2010 200.0 1.751 220.000 2.683 2.143 Oct 2010 194.6 1.704 235.800 2.876 2.196 Nov 2010 190.9 1.672 245.300 2.991 2.226 Dec 2010 191.4 1.676 250.000 3.049 2.253 Jan 2011 193.1 1.691 260.400 3.176 2.314 Feb 2011 194.4 1.702 278.800 3.400 2.415 Mar 2011 195.0 1.708 307.500 3.750 2.565 Apr 2011 194.1 1.700 325.100 3.965 2.651 May 2011 196.9 1.724 315.100 3.843 2.614 Jun 2011 205.7 1.801 316.900 3.865 2.668 Jul 2011 215.3 1.885 311.500 3.799 2.689 Page 12 of 18 to ULNRC06798 MINIMUM DECOMMISSIONING COST PER 10 CFR 50.75 FORMULA PROCESS Energy Adjustment Factor (Ex) Derivation Ex = Px (Px Coefficient) + Fx (Fx Coefficient) 0.58 = Px Coefficient (For PWR) 0.42 = Fx Coefficient (For PWR)

Preliminary Px Fx Index Date WPU0543 WPU0573 Ex Aug 2011 216.6 1.897 296.900 3.621 2.621 Sep 2011 215.8 1.890 306.500 3.738 2.666 Oct 2011 206.6 1.809 299.600 3.654 2.584 Nov 2011 204.0 1.786 322.700 3.935 2.689 Dec 2011 204.4 1.790 301.000 3.671 2.580 Jan 2012 201.1 1.761 308.800 3.766 2.603 Feb 2012 200.3 1.754 316.500 3.860 2.638 Mar 2012 199.8 1.750 330.800 4.034 2.709 Apr 2012 198.1 1.735 327.100 3.989 2.682 May 2012 201.5 1.764 315.600 3.849 2.640 Jun 2012 207.7 1.819 284.600 3.471 2.513 Jul 2012 221.5 1.940 287.900 3.511 2.600 Aug 2012 222.1 1.945 313.400 3.822 2.733 Sep 2012 222.8 1.951 330.400 4.029 2.824 Oct 2012 214.1 1.875 334.100 4.074 2.799 Nov 2012 212.3 1.859 311.600 3.800 2.674 Dec 2012 213.8 1.872 303.300 3.699 2.639 Jan 2013 199.2 1.744 303.600 3.702 2.567 Feb 2013 199.4 1.746 327.700 3.996 2.691 Mar 2013 199.0 1.743 308.700 3.765 2.592 Apr 2013 198.8 1.741 303.900 3.706 2.566 May 2013 203.5 1.782 296.400 3.615 2.552 Jun 2013 211.9 1.856 294.900 3.596 2.587 Jul 2013 211.4 1.851 300.400 3.663 2.612 Aug 2013 210.4 1.842 307.400 3.749 2.643 Sep 2013 210.3 1.842 315.300 3.845 2.683 Oct 2013 201.2 1.762 306.800 3.741 2.593 Nov 2013 199.0 1.743 295.300 3.601 2.523 Dec 2013 200.5 1.756 302.900 3.694 2.570 Jan 2014 215.1 1.884 297.500 3.628 2.616 Feb 2014 214.4 1.877 309.100 3.770 2.672 Mar 2014 214.8 1.881 306.500 3.738 2.661 Apr 2014 210.8 1.846 306.700 3.740 2.642 May 2014 215.2 1.884 304.400 3.712 2.652 Jun 2014 224.0 1.961 296.500 3.616 2.656 Jul 2014 227.5 1.992 295.300 3.601 2.668 Aug 2014 227.7 1.994 293.900 3.584 2.662 Sep 2014 225.1 1.971 291.000 3.549 2.634 Oct 2014 217.0 1.900 271.400 3.310 2.492 Nov 2014 210.7 1.845 260.900 3.182 2.406 Dec 2014 213.9 1.873 218.900 2.670 2.208 Jan 2015 222.4 1.947 173.600 2.117 2.019 Feb 2015 221.1 1.936 184.300 2.248 2.067 Mar 2015 218.2 1.911 185.700 2.265 2.059 Page 13 of 18 to ULNRC06798 MINIMUM DECOMMISSIONING COST PER 10 CFR 50.75 FORMULA PROCESS Energy Adjustment Factor (Ex) Derivation Ex = Px (Px Coefficient) + Fx (Fx Coefficient) 0.58 = Px Coefficient (For PWR) 0.42 = Fx Coefficient (For PWR)

Preliminary Px Fx Index Date WPU0543 WPU0573 Ex Apr 2015 213.3 1.868 178.200 2.173 1.996 May 2015 217.0 1.900 196.600 2.398 2.109 Jun 2015 237.2 2.077 193.400 2.359 2.195 Jul 2015 237.3 2.078 187.000 2.280 2.163 Aug 2015 236.8 2.074 180.400 2.200 2.127 Sep 2015 234.2 2.051 163.100 1.989 2.025 Oct 2015 218.2 1.911 165.300 2.016 1.955 Nov 2015 213.4 1.869 159.700 1.948 1.902 Dec 2015 214.8 1.881 131.100 1.599 1.762 Jan 2016 205.3 1.798 114.400 1.395 1.629 Feb 2016 204.3 1.789 107.700 1.313 1.589 Mar 2016 204.5 1.791 113.800 1.388 1.621 Apr 2016 202.4 1.772 116.800 1.424 1.626 May 2016 206.3 1.806 137.800 1.680 1.754 Jun 2016 220.4 1.930 149.400 1.822 1.885 Jul 2016 226.2 1.981 152.200 1.856 1.928 Aug 2016 227.3 1.990 143.500 1.750 1.889 Sep 2016 228.1 1.997 155.500 1.896 1.955 Oct 2016 214.9 1.882 153.400 1.871 1.877 Nov 2016 211.3 1.850 152.900 1.865 1.856 Dec 2016 211.7 1.854 153.300 1.870 1.860 Jan 2017 231.8 2.030 158.000 1.927 1.987 Feb 2017 232.9 2.039 159.700 1.948 2.001 Mar 2017 234.2 2.051 158.000 1.927 1.999 Apr 2017 234.3 2.052 157.900 1.926 1.999 May 2017 237.1 2.076 165.300 2.016 2.051 Jun 2017 251.0 2.198 163.100 1.989 2.110 Jul 2017 253.4 2.219 169.100 2.062 2.153 Aug 2017 251.2 2.200 179.000 2.183 2.193 Sep 2017 249.0 2.180 192.500 2.348 2.251 Oct 2017 238.7 2.090 202.900 2.474 2.252 Nov 2017 236.8 2.074 211.200 2.576 2.284 Dec 2017 237.4 2.079 212.700 2.594 2.295 Jan 2018 243.4 2.131 218.000 2.659 2.353 Feb 2018 245.3 2.148 216.600 2.641 2.355 Mar 2018 241.0 2.110 214.000 2.610 2.320 Apr 2018 237.7 2.081 220.500 2.689 2.337 May 2018 241.3 2.113 238.800 2.912 2.449 Jun 2018 255.2 2.235 248.900 3.035 2.571 Jul 2018 258.8 2.266 244.200 2.978 2.565 Aug 2018 258.7 2.265 242.000 2.951 2.553 Sep 2018 255.4 2.236 249.800 3.046 2.577 Oct 2018 246.6 2.159 258.400 3.151 2.576 Nov 2018 240.2 2.103 252.600 3.080 2.514 Page 14 of 18 to ULNRC06798 MINIMUM DECOMMISSIONING COST PER 10 CFR 50.75 FORMULA PROCESS Energy Adjustment Factor (Ex) Derivation Ex = Px (Px Coefficient) + Fx (Fx Coefficient) 0.58 = Px Coefficient (For PWR) 0.42 = Fx Coefficient (For PWR)

Preliminary Px Fx Index Date WPU0543 WPU0573 Ex Dec 2018 241.0 2.110 221.500 2.701 2.359 Jan 2019 244.9 2.144 191.600 2.337 2.225 Feb 2019 244.0 2.137 207.800 2.534 2.304 Mar 2019 241.6 2.116 227.300 2.772 2.391 Apr 2019 238.7 2.090 226.200 2.759 2.371 May 2019 241.1 2.111 224.400 2.737 2.374 Jun 2019 250.7 2.195 197.000 2.402 2.282 Jul 2019 253.3 2.218 209.400 2.554 2.359 Aug 2019 257.1 2.251 198.500 2.421 2.322 Sep 2019 254.4 2.228 208.000 2.537 2.357 Oct 2019 231.4 2.026 210.600 2.568 2.254 Nov 2019 230.2 2.016 212.700 2.594 2.259 Dec 2019 232.5 2.036 219.500 2.677 2.305 Jan 2020 232.9 2.039 205.400 2.505 2.235 Feb 2020 234.3 2.052 184.000 2.244 2.132 Mar 2020 233.2 2.042 160.400 1.956 2.006 Apr 2020 233.0 2.040 116.100 1.416 1.778 May 2020 232.8 2.039 101.800 1.241 1.704 Jun 2020 250.4 2.193 130.100 1.587 1.938 Jul 2020 253.5 2.220 168.600 2.056 2.151 Aug 2020 253.6 2.221 178.200 2.173 2.201 Sep 2020 256.2 2.243 165.700 2.021 2.150 Oct 2020 236.5 2.071 174.200 2.124 2.093 Nov 2020 233.3 2.043 187.000 2.280 2.143 Dec 2020 232.8 2.039 209.400 2.554 2.255 Jan 2021 234.7 2.055 217.600 2.654 2.307 Feb 2021 235.3 2.060 247.000 3.012 2.460 Mar 2021 253.2 2.217 282.500 3.445 2.733 Apr 2021 237.1 2.076 263.400 3.212 2.553 May 2021 239.2 2.095 296.700 3.618 2.735 Jun 2021 259.8 2.275 296.800 3.620 2.840 Jul 2021 264.727 2.318 305.392 3.724 2.909 Aug 2021 266.382 2.333 300.698 3.667 2.893 Sep 2021 263.224 2.305 311.738 3.802 2.934 Oct 2021 255.289 2.235 349.598 4.263 3.087 Nov 2021 253.517 2.220 343.086 4.184 3.045 Dec 2021 251.385 2.201 323.329 3.943 2.933 Jan 2022 263.262 2.305 342.535 4.177 3.092 Feb 2022 269.233 2.358 389.425 4.749 3.362 Mar 2022 264.930 2.320 472.872 5.767 3.768 Apr 2022 262.970 2.303 497.370 6.065 3.883 May 2022 267.786 2.345 551.997 6.732 4.187 Jun 2022 284.453 2.491 622.389 7.590 4.633 Jul 2022 297.134 2.602 531.451 6.481 4.231 Page 15 of 18 to ULNRC06798 MINIMUM DECOMMISSIONING COST PER 10 CFR 50.75 FORMULA PROCESS Energy Adjustment Factor (Ex) Derivation Ex = Px (Px Coefficient) + Fx (Fx Coefficient) 0.58 = Px Coefficient (For PWR) 0.42 = Fx Coefficient (For PWR)

Preliminary Px Fx Index Date WPU0543 WPU0573 Ex Aug 2022 300.917 2.635 466.971 5.695 3.920 Sep 2022 304.327 2.665 512.191 6.246 4.169 Oct 2022 285.264 2.498 565.417 6.895 4.345 Nov 2022 274.040 2.400 544.954 6.646 4.183 Dec 2022 279.934 2.451 394.700 4.813 3.443 Producer Price Index-Commodities Producer Price Index-Commodities Original Data Value Original Data Value Px Values Fx Values Series Id: WPU0543 Series Id: WPU0573 Not Seasonally Adjusted Not Seasonally Adjusted Group: Fuels and related products and power Group: Fuels and related products and power Item: Industrial electric power Item: Light fuel oils Base Date: 198200 Base Date: 198200 Page 16 of 18 to ULNRC06798 MINIMUM DECOMMISSIONING COST PER 10 CFR 50.75 FORMULA PROCESS Waste Burial Adjustment Factor (Bx) Determination Bx 1986 1.000 1987 1.000 1988 2.007 1989 2.007 1990 2.007 1991 2.494 1992 2.494 1993 11.408 1994 11.873 1995 12.824 1996 12.771 1997 15.852 1998 15.886 1999 15.886 2000 8.052 2001 8.052 2002 9.467 2003 9.467 2004 7.934 2005 7.934 2006 8.683 2007 8.683 2008 9.872 2009 9.872 2010 12.280 NUREG1307 Rev 14; Published November 2010 Bx Values for Generic LLW Disposal Site(e) 2011 12.280 Direct Disposal with Vendors(f)

PWR 2012 12.280 2013 13.885 NUREG1307 Rev 15; Final Report; Published January 2013 Bx Values for Generic LLW Disposal Site(e) 2014 13.885 Combination of Compact Affiliated and NonCompact Facility(f,g)

PWR 2015 13.885 Page 17 of 18 to ULNRC06798 MINIMUM DECOMMISSIONING COST PER 10 CFR 50.75 FORMULA PROCESS Waste Burial Adjustment Factor (Bx) Determination Bx NUREG1307 Rev 16; Final Report; Published March 2017 Bx Values for Generators Located in the Unaffiliated States and those Located in CompactAffiliated States having no Disposal Facility(c) 2016 12.471 PWR 2017 12.471 NUREG1307 Rev 17; Final Report; Published February 2019 Bx Values for Generators Located in the Unaffiliated States and those Located in CompactAffiliated States having no Disposal Facility(c) 2018 12.853 PWR 2019 12.853 NUREG1307 Rev 18; Final Report; Published January 2021 Bx Values for Generators Located in the Unaffiliated States and those Located in CompactAffiliated States having no Disposal Facility(c) 2020 12.793 PWR 2021 12.793 NUREG1307 Rev 19; Final Report; Published February 2023 Bx Values for Generators Located in the Unaffiliated States and those Located in CompactAffiliated States having no Disposal Facility(c) 2022 13.711 PWR NUREG1307, Rev. 19, Page 6, Paragraph 1 states:

Licensees not located in the Northwest, Rocky Mountain, Atlantic, or Texas Compacts should use the Bx values for Generators Located in States Not Affiliated with a Compact having a Disposal Facility (see footnote (c) in Table 21).

Footnote (c) to Table 2.1, "Values of Bx as a Function of LLW Burial Site and Year(a)" states:

Effective with NUREG1307, Revision 16, the CWF in Andrews County, Texas, is also available as a fullservice (i.e., Class A, B, and C) LLW disposal facility for waste generators located in States not affiliated with the Texas Compact. Outofcompact generators, however, must submit an import petition to the Texas Compact Commission for approval prior to shipping. The State of Texas also limits total noncompact waste disposed at the CWF to 30percent of licensed capacity and imposes additional fees on LLW disposed of from outofcompact generators.

With the availability of this fullservice disposal facility to outofcompact waste generators and the Clive, Utah disposal facility for any Class A LLW generated in the U.S., the Generic LLW Disposal Site scenario used in previous versions of NUREG1307 is replaced with this scenario, which provides Bx values representing a composite of the disposal rates for these two disposal facilities. These Bx factors are recommended for use for plants that currently have no disposal site available within their designated LLW Compact.

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