L-PI-09-031, Supplement to Irradiated Fuel Management Plan and Preliminary Decommissioning Cost Estimates

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Supplement to Irradiated Fuel Management Plan and Preliminary Decommissioning Cost Estimates
ML090760499
Person / Time
Site: Prairie Island  Xcel Energy icon.png
Issue date: 03/12/2009
From: Wadley M
Northern States Power Co, Xcel Energy
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
L-PI-09-031, TAC MD9492, TAC MD9493, TAC MD9494, TAC MD9495
Download: ML090760499 (17)
v • d • e


Text

@ Xcel Energym MAR 1 2 2M9 L-PI-09-031 10 CFR 50.54 10 CFR 50.75 U S Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Prairie lsland Nuclear Generating Plant Units 1 and 2 Dockets 50-282 and 50-306 License Nos. DPR-42 and DPR-60 Supplement to lrradiated Fuel Management Plan and Preliminary Decommissioninq Cost Estimates for Prairie lsland Nuclear Generating Plant (PINGP) (TAC Nos.

MD9492, MD9493, MD9494, AND MD9495)

References:

1. Nuclear Management Company, LLC (NMC) letter to US Nuclear Regulatory Commission (NRC), "lrradiated Fuel Management Plan and Preliminary Decommissioning Cost Estimates for Prairie lsland Nuclear Generating Plant (PINGP)", dated August 8, 2008, Accession Number ML082260425.
2. Northern States Power Company - Minnesota (NSPM) letter to the NRC, "Supplement to lrradiated Fuel Management Plan and Preliminary Decommissioning Cost Estimates for Prairie lsland Nuclear Generating Plant (PINGP) (TAC Nos. MD9492, MD9493, MD9494, and MD9495)", dated January 19, 2009, Accession Number ML090210156.

In Reference 1, NMC* submitted the PINGP lrradiated Fuel Management Plan for NRC review and preliminary approval and the PINGP Preliminary Decommissioning Cost Estimate for NRC review and approval. To support the NRC review of Reference 1, NSPM submitted additional information in Reference 2. Pursuant to a phone call with the NRC Staff on January 29, 2009, NSPM provides additional information in the Enclosure to this letter to support NRC review of References 1 and 2.

  • On September 22, 2008, NMC transferred its operating authority to Northern States Power Company, a Minnesota Corporation (NSPM), doing business as Xcel Energy. By letter dated September 3, 2008, NSPM assumed responsibility for actions and commitments previously submitted by NMC.

1717 Wakonade Drive East Welch, Minnesota 55089-9642 Telephone: 651.388.1 121

Document Control Desk Page 2 If there are any questions or if additional information is needed, please contact Mr. Dale Vincent, P.E., at 651-388-1 121.

Summaw of Commitments This letter contains no new commitments and no revisions to existing commitments.

Michael D. Wadley v

Site Vice President, Prairie Island Nuclear Generating Plant Units 1 and 2 Northern States Power Company - Minnesota Enclosures (1) cc:

Administrator, Region Ill, USNRC Project Manager, Prairie Island, USNRC Resident Inspector, Prairie Island, USNRC

ENCLOSURE PRAIRIE ISLAND NUCLEAR GENERATING PLANT, UNITS 1 AND 2 DOCKET NOS. 50-282 AND 50-306 FOLLOW UP REQUEST FOR CLARIFICATION TO REQUEST FOR ADDITIONAL INFORMATION (RAI) NO. 1 Page 1 of 15

lrradiated Fuel Management Plan Follow up Request for Clarification to RAI No. I: Enclosure 1, Section Ill, Funding for lrradiated Fuel Management Based on the DECON Decommissioning Option Provide Tables for Unit 1 and Unit 2 that identify for each unit the total decommissioning cost, the total expenditures for each year, and the total contributions for radiological decommissioning, irradiated fuel, and site restoration per year. Also submit an additional table that combines the total Unit 1 and Unit 2 combined expenses and contributions on an annual basis. The format of the Tables would be similar to Table 1 and Table 2 on pages 8 and 9 of the January 19,2009 RAI response (Accession Number ML090210156).

Response

The following is a breakdown of the annual decommissioning costs, total expenditures, and total contributions for radiological decommissioning, irradiated fuel management (Independent Spent Fuel Storage Installation (ISFSI)) and site restoration (Greenfield) for Prairie Island Nuclear Generating Plant (Prairie Island) Unit 1 and Unit 2 and Units 1 and 2 combined:

Table 1 Radiological Decommissioning Prairie Island Unit 1 Year 2009 201 0 201 1 201 2 201 3 2014 201 5 2016 201 7 201 8 2019 2020 2021 2022 2023 Beginning Fund Payment Balance (Expenditures) 370,245.731 388,328,832 406,735,621 425,471,892 444,543,542 22,964,000 438,290,378 73,544,000 371,275,338 105,907,000 270,118,431 69,663,000 204,043,584 46,805,000 160,053,154 19,365,000 143,206,472 9,710,000 135,886,059 9,736,000 128,408,145 9,710,000 120,822,842 9,710,000 113,101,762 9,710,000 Annuity (Contributions) 11,254,252 1 1,254,252 1 1,254,252 11,254,252 9,003,401 Balance Before lnterest Assumed Interest 6,828,850 7,152,537 7,482,019 7,817,398 7,707,435 Ending Balance 388,328,832 406,735,621 425,471,892 444,543,542 438,290,378 371,275,338 270,118,431 204,043,584 160,053,154 143,206,472 135,886,059 128,408,145 120,822,842 113,101,762 105,242,474 Page 2 of 15

Year 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 Beginning Fund Payment Balance (Expenditures) 105,242,474 9,736,000 97,216,040 9,710,000 89,072,398 9,710,000 80,782,985 9,710,000 72,345,192 9,736,000 63,729,896 13,162,000 51,473,062 23,810,000 28,158,230 4,945,000 23,628,747 84,000 23,966,198 49,000 24,345,316 24,781,097 25,224,679 25,676,200 26,135,804 26,603,635 27,079,840 27,564,570 28,057,975 28,560,213 29,071,441 29,591,820 30,121,513 30,660,688 31,209,515 31,768,165 32,336,815 32,915,644 33,504,834 34,104,571 10,514,000 Annuity (Contributions)

Balance Before lnterest 95,506,474 Assumed lnterest Ending Balance 97,216,040 89,072,398 80,782,985 72,345,192 63,729,896 51,473,062 28,158,230 23,628,747 23,966,198 24,345,316 24,781,097 25,224,679 25,676,200 26,135,804 26,603,635 27,079,840 27,564,570 28,057,975 28,560,213 29,071,441 29,591,820 30,121,513 30,660,688 31,209,515 31,768,165 32,336,815 32,915,644 33,504,834 34,104,571 24,012,842 Total Unit 1 radiological decommissioning expenditures: $487,990,000 Page 3 of 15

Table 2 Radiological Decommissioning Prairie Island Unit 2 Year 2009 2010 201 1 201 2 201 3 2014 201 5 201 6 201 7 201 8 201 9 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 Beginning Fund Payment Annuity Balance Before Balance (Expenditures) (Contributions)

Interest Assumed lnterest 7,156,381 7,511,016 7,871,998 8,239,443 8,613,464 8,780,882 7,899,537 6,250,169 4,699,925 3,547,468 2,831,638 2,708,318 2,583,274 2,455,992 2,326,432 2,194,069 2,059,820 1,923,169 1,784,071 1,642,000 1,379,944 663,907 505,759 514,167 522,995 532,357 54 1,886 551,586 561,459 571,509 581,739 592,152 602,752 613,541 624,523 Ending Balance 406,954,198 427,120,827 447,648,438 468,543,493 489,812,570 499,332,942 449,214,480 355,421,649 267,265,574 201,730,042 161,023,680 154,010,998 146,900,272 139,662,264 132,294,696 124,767,766 1 17,133,586 109,362,754 101,452,825 93,373,825 78,471,769 37,753,675 28,760,434 29,238,601 29,740,597 30,272,953 30,814,839 31,366,425 31,927,884 32,499,393 33,081, I 32 33,673,284 34,276,036 34,889,577 35,514,100

Year 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 Beginning Fund Payment Balance (Expenditures) 35,514,100 36,149,803 36,796,884 37,455,549 38,126,003 38.808.458 39,503,130 40,210,236 40,929,999 41,662,646 10,514,000 Annuity Balance Before (Contributions) lnterest 35,514,100 36,149,803 36,796,884 37,455,549 38,126,003 38,808,458 39,503,130 40,210,236 40,929,999 31,148,646 Assumed lnterest Ending Balance 36,149,803 36,796,884 37,455,549 38,126,003 38,808,458 39,503,130 40,210,236 40,929,999 41,662,646 31,706,207 Total Unit 2 radiological decommissioning expenditures: $537,984,000 Table 3 Radiological Decommissioning Units 1 and 2 Combined Total Year 2009 2010 201 1 2012 2013 2014 2015 101 6 301 7 201 8 101 9 2020 1021 3022 7023 3024 1025 1026 Beginning Fund Payment Annuity Balance Before Balance (Expenditures) (Contributions) lnterest 757,387,935 23,909,865 781,297,800 795,283,030 23,909,865 819,192,895 833,856,448 23,909,865 857,766,313 Assumed lnterest Ending Balance Page 5 of 15

Year 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 1040 3041 3042 7043 2044 2045 2046 2047 1048 2049 2050 3051 3052 2053 Beginning Fund Payment Annuity Balance (Expenditures) (Contributions) 190,145,740 19,404,000 173,798,017 19,457,000 157,103,721 29,444,000 129,944,830 65,192,000 65,911,906 14,444,000 52,389,181 120,000 53,204,800 70,000 54,085,912 55,054,050 56,039,518 57,042,625 58,063,688 59,103,028 60,160,972 61,237,854 62,334,011 63,449,790 64,585,541 65,741,623 66,918,398 68,116,237 69,335,518 70,576,623 71,839,945 73,125,880 74,434,833 75,767,217 21,028,000 Balance Before lnterest Assumed lnterest Ending Balance 3,056,277 173,798,017 2,762,704 157,103,721 2,285,109 129,944,830 1,159,076 65,911,906 921,276 52,389,181 935,618 53,204,800 951,113 54,085,912 968,138 55,054,050 985,468 56,039,518 1,003,107 57,042,625 1,021,063 58,063,688 1,039,340 59,103,028 1,057,944 60,160,972 1,076,881 61,237,854 1,096,158 62,334,011 1,115,779 63,449,790 1,135,751 64,585,541 1,156,081 65,741,623 1,176,775 66,918,398 1,197,839 68,116,237 1,219,281 69,335,518 1,241,106 70,576,623 1,263,322 71,839,945 1,285,935 73,125,880 1,308,953 74,434,833 1,332,384 75,767,217 979,832 55,719,049 Total combined radiological decommissioning expenditures: $1,025,974,000 Page 6 of 15

Table 4 Irradiated Fuel Management (ISFSI)

Prairie Island Unit 1 Year 2009 201 0 201 1 201 2 201 3 2014 201 5 201 6 2017 201 8 201 9 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 Beginning Fund Payment Annuity Balance Before Balance (Expenditures)

(Contributions)

Interest Assumed lnterest 472,724 521,688 571,528 622,260 590,863 617,065 630,669 706,397 820,766 965,357 1,I 22,435 1,282,056 1,444,802 1,610,462 1,779,088 1,950,463 2,125,174 2,303,012 2,484,034 2,668,028 2,810,073 2,851,620 2,856,267 2,846,517 2,837,289 2,828,613 2,819,782 2,810,631 2,801,477 2,792,160 2,782,676 2,772,861 2,763,031 2,753,026 2,742,841 Ending Balance 26,881,872 29,666,247 32,500,463 35,385,411 33,599,961 35,089,966 35,863,574 40,169,911 46,673,616 54,895,912 63,828,287 72,905,282 82,160,024 91,580,425 101,169,452 110,914,854 120,849,968 130,962,920 141,256,893 151,719,860 159,797,387 162,160,007 162,424,274 161,869,791 161,345,080 160,851,693 160,349,475 159,829,105 159,308,583 158,778,742 158,239.418 157,681,279 157,122,310 156,553,335 155,974,176 Page 7 of 15

Year 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 Beginning Fund Payment Balance (Expenditures) 155,974,176 3,331,000 155,375,489 3,322,000 154,775,247 3,322,000 154,164,260 3,322,000 153,542,336 3,331,000 152,900,119 3,322,000 152,255,567 3,322,000 151,599,478 3,322,000 150,931,645 3,331,000 150,242,697 3,355,000 149,516,986 7,173,000 Annuity Balance Before (Contributions)

Interest 152,643,176 152,053,489 151,453,247 150,842,260 150,211,336 149,578,119 148,933,567 148,277,478 147,600,645 146,887,697 142,343,986 Assumed lnterest Ending Balance 155,375,489 154,775,247 154,164,260 153,542,336 152,900,119 152,255,567 151,599,478 150,931,645 150,242,697 149,516,986 144,891,944 Total Unit 1 irradiated fuel management expenditures: $200,103,000 Table 5 Irradiated Fuel Management (ISFSI)

Prairie Island Unit 2 Year 2009 201 0 201 1 201 2 201 3 2014 201 5 201 6 2017 201 8 201 9 2020 2021 2022 2023 2024 2025 2026 2027 Beginning Fund Payment Balance (Expenditures) 30,111,060 34,944,199 39,863,851 44,871,564 49,968,916 55,157,510 2,047,000 58,355,339 12,104,000 64,255,537 13,687,000 68,650,013 10,942,000 75,917,286 7,464,000 86,854,899 6,989,000 98,471,797 6,376,000 110,920,611 6,358,000 123,610,581 6,358,000 136,527,701 6,358,000 149,676,038 6,376,000 160,278,136 6,358,000 156,675,307 6,358,000 153,007,986 6,358,000 Annuity (Contributions) 4,218,637 4,218,637 4,218,637 4,218,637 4,218,637 4,218,637 16,874,250 16,874,250 16,874,250 16,874,250 16,874,250 16,874,250 16,874,250 16,874,250 16,874,250 14,159,571 Balance Before lnterest Assumed lnterest Ending Balance Page 8 of 15

Year 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 204 1 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 Beginning Fund Balance 149,275,021 145,456,914 142,628,060 144,682,331 143,164,919 140,244,143 138,155,641 137,247,164 136,322,424 135,371,970 134,413,665 133,438,206 132,445,286 131,425,432 130,396,483 129,349,116 128,283,002 127,188,642 126,083,855 124,959,293 123,814,600 122,640,257 121,454,053 120,246,617 11 9,017,568 117,757,357 1 16,450,159 Payment (Expenditures) 6,376,000 5,337,000 490,000 4,035,000 5,387,000 4,518,000 3,322,000 3,322,000 3,331,000 3.322.000 3,322,000 3,322,000 3,331,000 3,322,000 3,322,000 3,322,000 3,331,000 3,322,000 3,322,000 3,322,000 3,331,000 3,322,000 3,322,000 3,322,000 3,331,000 3,355,000 7,173,000 Annuity (Contributions)

Balance Before lnterest Assumed Interest Ending Balance 145,456,914 142,628,060 144,682,331 143,164,919 140,244,143 138,155,641 137,247,164 136,322,424 135,371,970 134,413,665 133,438,206 132,445,286 131,425,432 130,396,483 129,349,116 128,283,002 127,188,642 126,083,855 124,959,293 123,814,600 122,640,257 121,454,053 120,246,617 119,017,568 11 7,757,357 1 16,450,159 11 1,233,221 Total Unit 2 irradiated fuel management expenditures: $203,967,000 Page 9 of 15

Table 6 Irradiated Fuel Management (ISFSI)

Units 1 and 2 Combined Total Year 2009 201 0 201 1 201 2 201 3 2014 201 5 201 6 201 7 201 8 201 9 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 Beginning Fund Payment Annuity Balance Before Balance (Expenditures)

(Contributions)

Interest Assumed lnterest 1,087,225 1,222,702 1,360,604 1,500,975 1,560,820 1,643,257 1,760,617 1,913,623 2,155,789 2,492,720 2,854,083 3,232,620 3,618,522 4,011,333 4,411,174 4,768,990 4,880,344 4,993,692 5,109,069 5,225,920 5,318,219 5,395,891 5,373,855 5,312,741 5,266,787 5,242,135 5,217,042 5,191,177 5,165,172 5,138,701 5,111,756 5,084,006 5,056,083 5,027,659 4,998,726 Ending Balance 61,826,071 69,530,098 77,372,027 85,354,327 88,757,472 93,445,305 100,119,112 108,819,924 122,590,902 141,750,811 162,300,084 183,825,893 205,770,605 228,108,127 250,845,490 271,192,991 277,525,274 283,970,906 290,531,914 297,176,774 302,425,447 306,842,338 305,589,193 302,113,934 299,500,721 298,098,857 296,671,899 295,201,076 293,722,247 292,216,948 290,684,704 289,106,710 287,518,793 285,902,452 284,257,178 Page 10 of 15

Year 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 Beginning Fund Payment Balance (Expenditures) 284,257,178 6,662,000 282,564,132 6,644,000 280,859,102 6,644,000 279,123,552 6,644,000 277,356,936 6,662,000 275,540,376 6,644,000 273,709,621 6,644,000 271,846,095 6,644,000 269,949,213 6,662,000 268,000,054 6,710,000 265,967,146 14,346,000 Annuity Balance Before (Contributions)

Interest 277,595,178 275,920,132 274,215,102 272,479,552 270,694,936 268,896,376 267,065,621 265,202,095 263,287,213 261,290,054 251,621,146 Assumed lnterest Ending Balance 282,564,132 280,859,102 279,123,552 277,356,936 275,540,376 273,709,621 271,846,095 269,949,213 268,000,054 265,967,146 256,125,164 Total combined irradiated fuel management expenditures: $404,070,000 Table 7 Site Restoration (Greenfield)

Prairie Island Unit 1 Year 2009 201 0 201 1 201 2 201 3 2014 201 5 2016 201 7 201 8 201 9 2020 2021 2022 2023 2024 2025 2026 2027 Beginning Fund Balance 8,048,820 9,495,216 10,967,503 12,466,144 13,991,610 15,316,372 15,920,763 15,913,018 16,156,555 16,564,262 17,854,661 19,476,581 21,127,534 22,808,040 24,518,626 26,259,831 28,032,205 29,836,303 31,412,231 Payment (Expenditures) 224,000 955,000 1,567,000 1,320,000 1,163,000 303,000 Annuity (Contributions) 1,279,421 1,279,421 1,279,421 1,279,421 1,279,421 1,279,421 1,279,421 1,279,421 1,279,421 1,279,421 1,279,421 1,279,421 1,279,421 1,279,421 1,279,421 1,279,421 1,279,421 1,023,537 Balance Before lnterest 9,328,241 10,774,637 12,246,924 13,745,564 15,047,030 15,640,793 15,633,184 15,872,438 16,272,976 17,540,682 19,134,081 20,756,002 22,406,955 24,087,460 25,798,046 27,539,252 29,311,625 30,859,840 31,412,231 Assumed lnterest 166,976 192,866 219,220 246,046 269,342 279,970 279,834 284,117 291,286 31 3,978 342,500 371,532 40 1,084 431,166 461,785 492,953 524,678 552,391 562,279 Ending Balance 9,495,216 10,967,503 12,466,144 13,991,610 15,316,372 15,920,763 15,913,018 16,156,555 16,564,262 17,854,661 19,476,581 21,127,534 22,808,040 24,518,626 26,259,831 28,032,205 29,836,303 31,412,231 31,974,510 Page 11 of 15

Year 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 Beginning Fund Payment Balance (Expenditures) 31,974,510 32,546,854 33,129,442 33,722,459 8,242,000 25,936,560 11,340,000 14,857,838 6,600,000 8,405,653 8,556,114 8,709,269 8,865,165 9,023,851 9,185,378 9,349,796 9,517,158 9,687,515 9,860,921 10,037,432 10,217,102 10,399,988 10,586,148 10,775,640 10,968,524 11,164,861 11,364,712 11,568,140 11,775,210 1 1,985,986 Annuity (Contributions)

Balance Before Interest 31,974,510 32,546,854 33,129,442 25,480,459 14,596,560 8,257,838 8,405,653 8,556,114 8,709,269 8,865,165 9,023,851 9,185,378 9,349,796 9,517,158 9,687,515 9,860,921 10,037,432 10,217,102 10,399,988 10,586,148 10,775,640 10,968,524 11,164,861 1 1,364,712 11,568,140 11,775,210 11,985,986 Assumed Interest 572,344 582,589 593,017 456,100 261,278 147,815 150,461 153,154 155,896 158,686 161,527 164,418 167,361 170,357 173,407 176,510 179,670 182,886 186,160 189,492 192,884 196,337 199,851 203,428 207,070 210,776 214,549 Ending Balance 32,546,854 33,129,442 33,722,459 25,936,560 14,857,838 8,405,653 8,556,114 8,709,269 8,865,165 9,023,851 9,185,378 9,349,796 9,517,158 9,687,515 9,860,921 10,037,432 10,217,102 10,399,988 10,586,148 10,775,640 10,968,524 11,164,861 11,364,712 11,568,140 11,775,210 1 1,985,986 12,200,535 Total Unit 1 site restoration expenditures: $31,714,000 Page 12 of 15

Table 8 Site Restoration (Greenfield)

Prairie Island Unit 2 Year 2009 201 0 201 1 201 2 201 3 2014 201 5 2016 201 7 201 8 201 9 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 Beginning Fund Balance 12,904,740 15,143,878 17,423,097 19,743,114 22,104,660 24,508,477 26,912,570 29,081,810 30,119,294 31,049,130 32,370,197 34,249,309 36,870,515 39,538,641 42,254,526 45,019,025 47,833,009 50,697,364 53,612,990 56,179,177 57,184,785 58,208,392 59,250,322 45,372,203 25,629,911 14,126,325 14,379,186 14,636,574 14,898,569 15,165,253 15,436,711 15,713,028 15,994,291 16,280.589 16,572,012 Payment Annuity Balance Before (Expenditures)

(Contributions)

Interest Assumed lnterest 266,309 306,389 347,187 388,715 430,987 473,264 511,410 529,655 546,006 569,237 602,282 648,376 695,296 743,055 791,670 841,154 891,525 942,796 987,923 1,005,607 1,023,608 1,041,930 797,880 450,708 248,415 252,861 257,387 261,995 266,684 271,458 276,317 281,263 286,298 291,423 296,639 Ending Balance 15,143,878 17,423,097 19,743,114 22,104,660 24,508,477 26,912,570 29,081,810 30,119,294 31,049,130 32,370,197 34,249,309 36,870,515 39,538,641 42,254,526 45,019,025 47,833,009 50,697,364 53,612,990 56,179,177 57,184,785 58,208,392 59,250,322 45,372,203 25,629,911 14,126,325 14,379,186 14,636,574 14,898,569 15,165,253 15,436,711 15,713,028 15,994,291 16,280,589 16,572,012 16,868,651 Page 13 of 15

Year 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 Beginning Fund Payment Balance (Expenditures) 16,868,651 17,170,599 17,477,953 17,790,809 18,109,264 18,433,420 18,763,378 19,099,243 19,441,119 19,789,115 20,143,340 Annuity (Contributions)

Balance Before lnterest 16,868,651 17,170,599 Total Unit 2 site restoration expenditures: $51,949,000 Table 9 Site Restoration (Greenfield)

Units 1 and 2 Combined Total Year 2009 2010 201 1 2012 201 3 2014 201 5 2016 201 7 2018 201 9 2020 2021 2022 2023 2024 2025 2026 Beginning Fund Payment Annuity Balance Before Balance (Expenditures)

(Contributions)

Interest Assumed lnterest 301,949 307,354 312,855 318,455 324,156 329,958 335,864 341,876 347,996 354,225 360,566 Assumed lnterest 433,284 499,255 566,407 634,761 700,329 753,234 791,244 81 3,771 837,292 883,215 944,782 1,019,909 1,096,380 1,174,221 1,253,455 1,334,107 1,416,203 1,495,188 Ending Balance 17,170,599 17,477,953 17,790,809 18,109,264 18,433,420 18,763,378 19,099,243 19,441,119 19,789,115 20,143,340 20,503,906 Ending Balance 24,639,095 28,390,600 32,209,258 36,096,269 39,824,849 42,833,333 44,994,828 46,275,849 47,613,392 50,224,858 53,725,890 57,998,049 62,346,680 66,773,152 71,278,857 75,865,214 80,533,667 85,025,221 Page 14 of 15

Year 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 Beginning Fund Balance 85,025,221 88,153,687 89,731,638 91,337,835 92,972,782 71,308,762 40,487,749 22,531,978 22,935,301 23,345,843 23,763,733 24,189,104 24,622,089 25,062,825 25,511,449 25,968,104 26,432,933 26,906,083 27,387,701 27,877,941 28,376,956 28,884,904 29,401,944 29,928,239 30,463,954 31,009,259 31,564,325 32,129,326 Payment (Expenditures) 22,918,000 31,533,000 18,352,000 Annuity (Contributions)

Balance Before Interest 86,603,485 88,153,687 89,731,638 91,337,835 70,054,782 39,775,762 22,135,749 22,531,978 22,935,301 23,345,843 23,763,733 24,189,104 24,622,089 25,062,825 25,511,449 25,968,104 26,432,933 26,906,083 27,387,701 27,877,941 28,376,956 28,884,904 29,401,944 29,928,239 30,463,954 31,009,259 31,564,325 32,129,326 Assumed Interest 1,550,202 1,577,951 1,606,196 1,634,947 1,253,981 71 1,986 396,230 403,322 410,542 417,891 425,371 432,985 440,735 448,625 456,655 464,829 473,150 481,619 490,240 499,015 507,948 517,040 526,295 535,715 545,305 555,066 565,001 575,115 Ending Balance 88,153,687 89,731,638 91,337,835 92,972,782 71,308,762 40,487,749 22,531,978 22,935,301 23,345,843 23,763,733 24,189,104 24,622,089 25,062,825 25,511,449 25,968,104 26,432,933 26,906,083 27,387,701 27,877,941 28,376,956 28,884,904 29,401,944 29,928,239 30,463,954 31,009,259 31,564,325 32,129,326 32,704,441 Total combined site restoration expenditures: $83,663,000 Page 15 of 15

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