HBL-15-003, Decommissioning Funding Report for Humboldt Bay, Unit 3

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Decommissioning Funding Report for Humboldt Bay, Unit 3
ML15090A774
Person / Time
Site: Humboldt Bay
Issue date: 03/31/2015
From: Halpin E
Pacific Gas & Electric Co
To:
Document Control Desk, Office of Nuclear Material Safety and Safeguards
References
HBL-15-003
Download: ML15090A774 (23)


Text

Pacific Gas and Electric Company Edward D. Halpin Diablo Canyon Power Plant Senior Vice President Mail Code 104/6 Nuclear Generation & Chief Nuclear Officer P. D. Box 56 Avila Beach, CA 93424 805.545.4100 E-Mail: E1HB@pge.com March 31, 2015 PG&E Letter HBL-15-003 U.S. Nuclear Regulatory Commission 10 CFR 50.75 (f)

ATTN: Document Control Desk 10 CFR 50.82 (8)(v)

Washington, DC 20555-0001 10 CFR 50.82 (8)(vii)

Docket No. 50-133, DPR-7 Humboldt Bay Power Plant, Unit 3 Decommissioning Funding Report for Humboldt Bay Power Plant. Unit 3

Dear Commissioners and Staff:

Pacific Gas and Electric Company (PG&E) is submitting its decommissioning funding report for Humboldt Bay Power Plant (HBPP), Unit 3, pursuant to the requirements of 10 CFR 50.75 (f), 10 CFR 50.82 (8)(v), 10 CFR 50.82 (B)(vii).

Humboldt Bay Power Plant. Unit 3 At the end of calendar year 2014, the market value of the HBPP Unit 3 (220 MWt) decommissioning trust funds was $132.9 million. PG&E estimates it will need to collect an additional $385.3 million over four years, beginning in 2014, based on a site-specific decommissioning cost estimate prepared by PG&E staff and approved by the California Public Utilities Commission's Final Decision D.14-02-24 Nuclear Decommissioning Cost Triennial Proceeding (NDCTP). The NDCTP application is based on actual bids for remaining HBPP civil work scope, costs for removal of underground reactor caisson, cost associated with a delay in the Department of Energy's acceptance of site-stored spent fuel, cost to remediate site radioactivity to nuclear resident farmer criteria, and updated remaining decommissioning costs based on actual past HBPP decommissioning data versus industry estimates.

The market value of the HBPP trust is lower than the minimum amount of the NRC decommissioning estimate of $712.0 million (2015 dollars) that was calculated pursuant to the requirements specified in 10 CFR 50.75(c), which is based on a minimum 1200 MWt plant. This is due to $442.5 million having been spent on NRC decommissioning activities through December 2014, and an estimate to complete of $441.1 million for the NRC radiological scope.

PG&E is confident the HBPP trust, with the noted additional contributions, will be sufficient to ensure successful decommissioning and maintaining the spent fuel in an independent spent fuel storage installation (ISFSI) at HBPP until 2025, based on the December 2012 site-specific decommissioning cost estimate prepared by PG&E staff.

Document Control Desk PG&E Letter HBL-15-003 March 31, 2015 Page 2 Supporting Cost Estimates Based on a December 2012 site-specific cost estimate prepared by PG&E staff, PG&E estimates that the NRC decommissioning costs are approximately $883.6 million (including $442.5 million disbursed from the Trust(s) through December 2014, and

$441.1 million future radiological removal costs) for HBPP, Unit 3, in 2015 dollars.

These costs do not include site restoration ($0.8 million), or spent fuel management until 2025 ($148.4 million). To assure that sufficient funds will be available for decommissioning, PG&E established external sinking trust fund accounts for HBPP, Unit 3.

Supporting Enclosures Enclosures 1-4 provide supporting documentation for this report. provides decommissioning funding status information in a format suggested by Nuclear Energy Institute (NEI), and the NRC. provides information on the escalation of the required decommissioning funding amounts to 2015 dollars. As required by 10 CFR 50.75(c)(2), and using NUREG-1577, "Standard Review Plan on Power Reactor Licensee Financial Qualifications and Decommissioning Funding Assurance," Revision 1 and NUREG-1307, "Report on Waste Burial Charges," Revision 15, the information includes escalation factors for energy, labor, and waste burial costs. is a cash flow of the total decommissioning of HBPP that identifies the monies for NRC scope (removal of radiological contamination), site restoration (including the non-radiological work) and the spent fuel management. contains the Variance of the 2014 forecast of $161.9 million, as submitted in Enclosure 4 of PG&E Letter HBL-14-009, "Decommissioning Funding Report for Humboldt Bay Power Plant, Unit 3," dated March 28, 2014, to the actual expenditures for 2014 of $84.6 million.

The PG&E decommissioning cost estimate report prepared for the 2012 NDCTP filing for HBPP, Unit 3 that provides cost estimates for the decommissioning of the nuclear, non-nuclear facilities, and spent fuel management, including operation of the ISFSI in 2011 dollars is not included in this submittal. This document was included in the PG&E Letter HBL-13-003, "Decommissioning Funding Report for Humboldt Bay Power Plant, Unit 3," dated April1, 2013.

PG&E makes no new or revised regulatory commitments (as defined by NEI 99-04) in this letter.

Document Control Desk PG&E Letter HBL-15-003 March 31, 2015 Page 3 Should you have any questions, please contact Mr. Bob Kapus at (707) 444-0810.

s;:t~ ~--

Edward D. Halpin Senior Vice President, Nuclear Generation and Chief Nuclear Officer bnsm/4540 Enclosures cc: HBPP Humboldt Distribution cc/enc: Marc L. Dapas, NRC Region IV Administrator John B. Hickman, NRC/FSME/DWMEP Project Manager IN PO

Enclosure 1 PG&E Letter HBL-15-003 NRC Decommissioning Funding Status Report Humboldt Bay Power Plant- Unit 3 (220 MWt)

Enclosure 1 PG&E Letter HBL-15-003 Page 1 of 2 NRC Decommissioning Funding Status Report Humboldt Bay Power Plant- Unit 3 (220 MWt)

As provided in 10 CFR 50.75(f)(1 ), each power reactor licensee is required to report to the NRC on a calendar year basis, beginning March 31, 1999, and annually thereafter, on the status of its decommissioning funding for each reactor that it owns and has already closed.

On December 12, 2012, Pacific Gas & Electric (PG&E) submitted the 2012 Nuclear Decommissioning Cost Triennial Proceeding (NDCTP) to the California Public Utilities Commission (CPUC) for the remaining scope of work to complete the decommissioning of the radiological scope, the non-radiological scope, and spent fuel management of Humboldt Bay Power Plant (HBPP), Unit 3, in the amount of $727.6 million in 2011 dollars. On February 27, 2014, the CPUC issued Phase 1 Decision D.14-02-24 that approved the remaining scope of work however reduced the funding by $47.2 million in 2011 dollars. There was no specificity identified by the CPUC of the scope related to this $47.2 million reduction, this funding was not a disallowance, and therefore can be recovered in PG&E's 2015 NDCTP filing if found to be prudent. The collection of funding (Item 3) is based on the reduced remaining funding of $680.4 million per the CPUC Decision, using the escalation and rate of return assumptions included in the December 12, 2012, NDCTP filing. On December 22, 2012, the CPUC issued Phase 2 Decision 14-12-082 that approved the escalation and rate of return factors to be used in the financial collection analysis.

$ In Millions

1. The minimum decommissioning fund estimate, 1

pursuant to 10 CFR 50.75 (b) and (c).

January 2015 dollars $ 712.0 (HBPP is a shutdown unit with a Site Specific Cost Study; therefore, the minimum decommissioning fund estimate is based on the Site Specific Cost Study shown in item 8 of this enclosure.)

2. The amount accumulated at the end of the calendar year preceding the date of the report for items included in 10 CFR 50.75 (b) and (c). (Alternatively, the total amount accumulated at the end of the calendar year preceding the date of the report can be reported here if the cover letter transmitting the report provides 1
  • The NRC formulas in section 10CFR50.75(c) include only those 'decommissioning costs incurred by licensees to remove a facility or site safely from service and reduce residual radioactivity to levels that permit: (1) release of the property for unrestricted use and termination of the license; or (2) release of the property under restricted conditions and termination of the license. The cost of dismantling or demolishing non-radiological systems and structures is not included in the NRC decommissioning cost estimates. The costs of managing and storing spent fuel on site until transfers to DOE are not included in the cost formulas.

Enclosure 1 PG&E Letter HBL-15-003 Page 2 of2 the total estimate and indicates what portion of that estimate is for items not included in 10 CFR 50.75 (b) and (c)).

Market Value (December 2014 dollars) $132.9

3. A schedule of the annual amounts remaining to be collected; for items in 10 CFR 50.75 (b) and (c). (Alternatively, the annual amounts remaining to be collected can include items beyond those required in 10 CFR 50.75 (b) and (c) if the cover letter transmitting the report provides a total cost estimate and indicates what portion of that estimate is for items that are not included in 10 CFR 50.75 (b) and (c)).

Amount remaining $385.3 Number of years to collect 2014-2017 4 years Annual amount to be collected $96.3

4. The assumptions used regarding escalation in decommissioning cost, rates of earnings on decommissioning funds (assumes trust will be gradually converted to a more conservative, all fixed income portfolio after 201 0), and rates of other factors used in funding projections (all values below are from the 2012 NDCTP filing).

Escalation in decommissioning costs Rate of Return 2014 2.34o/o Escalation in decommissioning costs Rate of Return 2015-2025 2.24o/o

5. Any contracts upon which the licensee is relying pursuant to 10 CFR 50.75(e)(1)(v). None
6. Any modifications to a licensee's current method providing financial assurance occurring since the last submitted report. None
7. Any material changes to trust agreements. None
8. CPUC Submittal in 2015 Dollars in Millions:

Total Project (Decommission 2015) $1,032.8 Scope Excluded from NRC calculations $ 0.8 Scope of ISFSI from Licensing to Decommissioning in 2025 $ 148.4 Scope Decommissioned and Disbursed from Trust(s) $ 442.5 Total NRC Decommissioning Remaining Scope $ 441.1

Enclosure 2 PG&E Letter HBL-15-003 Decommissioning Estimate Composite Escalation Development of E Component Development of L Component Development of B Component

2015 Decommisioning Estimate Enclosure 2 PG&E Letter HBL-15-003 Nuclear Regulatory Commission Estimate of Decommission Costs for Boiling Water Reactor (BWR)

In 2015 HBPP BWR

($ in millions)

Jan 1986 Estimate $114.80 (Table 2.1 in NUREG 1307 Rev 14 Escalated to 1999 $128.9 has no value for 1999 Burial)

Escalated to 2000 $400.2 ($360.9 in 2000 Submittal)

Escalated to 2001 $354.1 ($425 .3 in 2001 Submittal)

Escalated to 2002 $357.4 ($445.6 in 2002 Submittal)

Escalated to 2003 $373.8 ($430.1 in 2003 Submittal)

Escalated to 2004 $388.0 ($439.6 in 2004 Submittal)

Escalated to 2005 $416.8 ($453.2 in 2005 Submittal)

Escalated to 2006 $519 .2 ($494.3 in 2006 Submittal)

Escalated to 2007 $538 .3 ($548.6 in 2007 Submittal)

Escalated to 2008 $564.4 ($590.9 in 2008 Submittal)

Escalated to 2009 $574.6 ($573.8 in 2009 Submittal)

Escalated to 2010 $594.5 ($596 .6 in 2010 Submittal)

Escalated to 2011 $626 .5 ($619 .0 in 2011 Submittal)

Escalated to 2012 $659 .9 ($645.4 in 2012 Submittal)

Escalated to 2013 $687.1 ($687.2 in 2013 Submittal)

Escalated to 2014 $714.3 ($714.3 in 2014 Submittal)

Escalated to 2015 $712 .0 Jan 1986 based on 10 CFR 50.75 (c) Table of minimum amounts BWR based on minimum 1200 MWt = ($104 + (.009xMWt)) million per unit where BWR less than 1200 MWt use P=1200 MWt, HBPP 220 MWt Page 1

Composite Escalation Enclosure 2 PG&E Letter HBL-15-003 Calculating Overall Escalation Rate BWR Dec-05 Dec-06 Dec-07 Dec-08 Dec-09 Dec-10 Dec-11 Dec-12 Dec-13 Dec-14 Weight (1)

L (Labor) 2.0600 2.1218 2.1939 2.2536 2.2784 2.3175 2.3711 2.4061 2.4638 2.5235 0.65 E (Energy) 1.9106 1.9808 2.4513 1.8323 2.0402 2.3945 2.77 19 2.8265 2.7672 2.3110 0.13 B (Burial) 13.3331 13.8744 14.4164 15.0096 15.6028 16.5439 17.4856 18.4273 19.3690 19.3690 0.22 (1 ) from NUREG 1307 Revision 15, Report on Waste Burial Charges, Section 2 Summary, Page 3 ... where A, B, and Care the fractions of the total1986 dollar costs that are attributable to labor (0.65) , energy (0.13), and burial (0.22) , respectively, and sum to 1.0.

BWR Combined Escalation Rate for:

Dec-06 Dec-07 Dec-08 Dec-09 Dec-1 0 Dec-11 Dec-12 Dec-13 14-Dec 4.6891 4.9163 5.0052 5.1788 5.4573 5.7484 5.9854 6.2224 6.2019 Page 1

Development of E Component Enclosure 2 PG&E Letter HBL-15-003 Calculation of Energy Escalation Factor- Reference NUREG-1307, Revision 15, Section 3.2 Using Regional Indices SERIES ID: WPU0573 Light Fuel Oils (as of 03/04/15) and WPU0543 Industrial Electric Power (as of 03/04/15)

REBASED TO 1986 = 100 PPI for Fuels & PPI for Light PPI for Fuels & PPI for Light Energy Escalation Related Products Fuel Oils Related Products Fuel Oils Factor (E)

(2000 = 100) (2000=100) (2000 = 100) (2000=100) for BWR (P) =Industrial Energy Power (F) = Light Fuel Oils (P) =Industrial Energy Power (F) = Light Fuel Oils (Humboldt)

BWRwt= 0.54 BWRwt= 0.46 Dec-99 126.5 72.9 1.0000 1.0000 1.0000 Jan-00 126.8 75.3 1.0024 1.0329 1.0164 Feb-00 126.7 87.9 1.0016 1.2058 1.0955 Mar-00 126.7 89.7 1.0016 1.2305 1.1069 Apr-00 126.8 83.1 1.0024 1.1399 1.0656 May-00 128.6 82.9 1.0166 1.1372 1.0721 Jun-00 133.6 86.2 1.0561 1.1824 1.1142 Jul-00 136.2 88 .7 1.0767 1.2167 1.1411 Aug-00 137.4 91 .6 1.0862 1.2565 1.1645 Sep-00 137.8 110.1 1.0893 1.5103 1.2830 Oct-00 134.1 108.6 1.0601 1.4897 1.2577 Nov-00 130.9 108.4 1.0348 1.4870 1.2428 Dec-00 132.7 100.6 1.0490 1.3800 1.2013 Jan-01 136.4 96.1 1.0783 1.3182 1.1887 Feb-01 136.4 91 .6 1.0783 1.2565 1.1603 Mar-01 136.5 83.1 1.0791 1.1399 1.1070 Apr-01 135.1 86.2 1.0680 1.1824 1.1206 May-01 136.2 94.2 1.0767 1.2922 1.1758 Jun-01 148.4 90 .2 1.1731 1.2373 1.2026 Jul-01 149.5 81.3 1.1818 1.1152 1.1512 Aug-01 148.9 83.2 1.1771 1.1413 1.1606 Sep-01 148.2 93 1.1715 1.2757 1.2195 Oct-01 143.8 76.8 1.1368 1.0535 1.0985 Nov-01 137.3 70.5 1.0854 0.9671 1.0310 Dec-01 136.9 56.6 1.0822 0.7764 0.9415 Jan-02 136.3 58.3 1.0775 0.7997 0.9497 Feb-02 135.4 59.6 1.0704 0.8176 0.9541 Mar-02 135.7 69.1 1.0727 0.9479 1.0153 Apr-02 135.4 76.4 1.0704 1.0480 1.0601 May-02 137.9 75 1.0901 1.0288 1.0619 Jun-02 143.6 71.4 1.1352 0.9794 1.0635 Jul-02 144.9 75.5 1.1455 1.0357 1.0950 Aug-02 145.0 77.9 1.1462 1.0686 1.1105 Sep-02 145.8 89 .5 1.1526

  • 1.2277 1.1871 Oct-02 140.0 95 .1 1.1067 1.3045 1.1977 Nov-02 139.5 82.8 1.1028 1.1358 1.1180 Dec-02 139.6 84.6 1.1036 1.1605 1.1297 Jan-03 140.3 95.7 1.1091 1.3128 1.2028 Feb-03 140.6 120.4 1.1115 1.6516 1.3599 Page 1

Development of E Component Enclosure 2 PG&E Letter HBL-15-003 Calculation of Energy Escalation Factor- Reference NUREG-1307, Revision 15, Section 3.2 Using Regional Indices SERIES ID: WPU0573 Light Fuel Oils (as of 03/04/15) and WPU0543 Industrial Electric Power (as of 03/04/15)

REBASED TO 1986 = 100 PPI for Fuels & PPI for Light PPI for Fuels & PPI for Light Energy Escalation Related Products Fuel Oils Related Products Fuel Oils Factor (E)

(2000 = 100) (2000=100) (2000 = 100) (2000=100) for BWR (P) =Industrial Energy Power (F) = Light Fuel Oils (P) =Industrial Energy Power (F) = Light Fuel Oils (Humboldt)

BWRwt= 0.54 BWRwt= 0.46 Mar-03 143.3 128.9 1.1328 1.7682 1.4251 Apr-03 144.3 98.3 1.1407 1.3484 1.2363 May-03 145.1 85 .5 1.1470 1.1728 1.1589 Jun-03 148.3 87.2 1.1723 1.1962 1.1833 Jul-03 151 .6 90 .1 1.1984 1.2359 1.2157 Aug-03 151 .3 94.1 1.1960 1.2908 1.2396 Sep-03 152.0 88 .2 1.2016 1.2099 1.2054 Oct-03 147.4 97.8 1.1652 1.3416 1.2463 Nov-03 142.7 93.0 1.1281 1.2757 1.1960 Dec-03 142.9 95 .8 1.1296 1.3141 1.2145 Jan-04 143.1 106.8 1.1312 1.4650 1.2848 Feb-04 143.1 100.8 1.1312 1.3827 1.2469 Mar-04 143.1 107.8 1.1312 1.4787 1.2911 Apr-04 143.1 . 115.2 1.1312 1.5802 1.3378 May-04 144.2 116 1.1399 1.5912 1.3475 Jun-04 152.4 111 .5 1.2047 1.5295 1.3541 Jul-04 152.2 119.3 1.2032 1.6365 1.4025 Aug-04 154.0 131 .1 1.2174 1.7984 1.4846 Sep-04 154.0 136.8 1.2174 1.8765 1.5206 Oct-04 145.8 161 .7 1.1526 2.2181 1.6427 Nov-04 144.9 153.6 1.1455 2.1070 1.5878 Dec-04 146.2 133.8 1.1557 1.8354 1.4684 Jan-05 148.9 138.5 1.1771 1.8999 1.5096 Feb-05 148.0 146 1.1700 2.0027 1.5530 Mar-05 148.1 169.4 1.1708 2.3237 1.7011 Apr-05 148.7 170.9 1.1755 2.3443 1.7131 May-05 151 .1 165.3 1.1945 2.2675 1.6881 Jun-05 159.7 180.6 1.2625 2.4774 1.8213 Jul-05 162.1 186.2 1.2814 2.5542 1.8669 Aug-05 162.5 194.5 1.2846 2.6680 1.9210 Sep-05 162.8 209.9 1.2870 2.8793 2.0194 Oct-05 159.5 252.0 1.2609 3.4568 2.2710 Nov-05 161.1 199.1 1.2735 2.7311 1.9440 Dec-05 161.4 193.6 1.2759 2.6557 1.9106 Jan-06 167.0 191.8 1.3202 2.6310 1.9231 Feb-06 168.6 190.0 1.3328 2.6063 1.9186 Mar-06 167.4 199.2 1.3233 2.7325 1.9715 Apr-06 169.6 221 .9 1.3407 3.0439 2.1242 May-06 170.8 231.4 1.3502 3.1742 2.1892 Jun-06 181 .2 238.1 1.4324 3.2661 2.2759 Page 2

Development of E Component Enclosure 2 PG&E Letter HBL-15-003 Calculation of Energy Escalation Factor- Reference NUREG-1307, Revision 15, Section 3.2 Using Regional Indices SERIES ID: WPU0573 Light Fuel Oils (as of 03/04/15) and WPU0543 Industrial Electric Power (as of 03/04/15)

REBASED TO 1986 = 100 PPI for Fuels & PPI for Light PPI for Fuels & PPI for Light Energy Escalation Related Products Fuel Oils Related Products Fuel Oils Factor (E)

(2000 = 100) (2000=100) (2000 = 100) (2000=100) for BWR (P) =Industrial Energy Power (F) = Light Fuel Oils (P) =Industrial Energy Power (F) = Light Fuel Oils (Humboldt)

BWR wt = 0.54 BWR wt = 0.46 Jul-06 181.9 231 .6 1.4379 3.1770 2.2379 Aug-06 180.2 241.4 1.4245 3.3114 2.2925 Sep-06 181.0 203.1 1.4308 2.7860 2.0542 Oct-06 171 .2 198.1 1.3534 2.7174 1.9808 Nov-06 167.2 198.2 1.3217 2.7188 1.9644 Dec-06 167.8 200.4 1.3265 2.7490 1.9808 Jan-07 171 .9 180.0 1.3589 2.4691 1.8696 Feb-07 175.7 191 .5 1.3889 2.6269 1.9584 Mar-07 172.1 215.1 1.3605 2.9506 2.0919 Apr-07 173.1 231 .8 1.3684 3.1797 2.2016 May-07 179.2 225.3 1.4166 3.0905 2.1866 Jun-07 186.7 222.4 1.4759 3.0508 2.2003 Jul-07 187.0 237.8 1.4783 3.2620 2.2988 Aug-07 187.6 225.5 1.4830 3.0933 2.2237 Sep-07 188.4 238.9 1.4893 3.2771 2.3117 Oct-07 182.7 243.3 1.4443 3.3374 2.3151 Nov-07 180.3 288.2 1.4253 3.9534 2.5882 Dec-07 180.0 266.7 1.4229 3.6584 2.4513 Jan-08 181.9 273.8 1.4379 3.7558 2.5042 Feb-08 180.0 280.2 1.4229 3.8436 2.5364 Mar-08 183.1 339.6 1.4474 4.6584 2.9245 Apr-08 185.2 352.5 1.4640 4.8354 3.0149 May-08 189.5 384.9 1.4980 5.2798 3.2377 Jun-08 191 .9 410.5 1.5170 5.6310 3.4094 Jul-08 196.1 423.8 1.5502 5.8134 3.5113 Aug-08 197.1 343.9 1.5581 4.7174 3.0114 Sep-08 195.9 335.1 1.5486 4.5967 2.9507 Oct-08 193.0 279.0 1.5257 3.8272 2.5844 Nov-08 187.7 218.2 1.4838 2.9931 2.1781 Dec-08 188.3 163.0 1.4885 2.2359 1.8323 Jan-09 190.3 159.8 1.5043 2.1920 1.8207 Feb-09 190.3 145.6 1.5043 1.9973 1.7311 Mar-09 187.6 136.8 1.4830 1.8765 1.6640 Apr-09 186.9 159.9 1.4775 2.1934 1.8068 May-09 190.5 158.6 1.5059 2.1756 1.8140 Jun-09 193.3 183.7 1.5281 2.5199 1.9843 Jul-09 196.2 165.2 1.5510 2.2661 1.8799 Aug-09 194.7 196.1 1.5391 2.6900 2.0685 Sep-09 194.9 186.6 1.5407 2.5597 2.0094 Oct-09 189.9 193.3 1.5012 2.6516 2.0304 Page 3

Development of E Component Enclosure 2 PG&E Letter HBL-15-003 Calculation of Energy Escalation Factor- Reference NUREG-1307, Revision 15, Section 3.2 Using Regional Indices SERIES ID: WPU0573 Light Fuel Oils (as of 03/04/15) and WPU0543 Industrial Electric Power (as of 03/04/15)

REBASED TO 1986 = 100 PPI for Fuels & PPI for Light PPI for Fuels & PPI for Light Energy Escalation Related Products Fuel Oils Related Products Fuel Oils Factor (E)

(2000 = 100) (2000=100) (2000 = 100) (2000=100) for BWR (P) =Industrial Energy Power (F) = Light Fuel Oils (P) =Industrial Energy Power (F) = Light Fuel Oils (Humboldt)

BWR wt= 0.54 BWR wt= 0.46 Nov-09 186.0 207.8 1.4704 2.8505 2.1052 Dec-09 186.0 197.5 1.4704 2.7092 2.0402 Jan-10 186.3 220.7 1.4727 3.0274 2.1879 Feb-10 186.1 200.2 1.4711 2.7462 2.0577 Mar-10 189.0 217.0 1.4941 2.9767 2.1761 Apr-10 188.8 231.5 1.4925 3.1756 2.2667 May-10 192.0 226.0 1.5178 3.1001 2.2457 Jun-10 197.8 212.4 1.5636 2.9136 2.1846 Jul-10 199.8 209.3 1.5794 2.8711 2.1736 Aug-10 200.8 221.4 1.5874 3.0370 2.2542 Sep-1 0 200.0 220.0 1.5810 3.0178 2.2420 Oct-10 194.6 235.8 1.5383 3.2346 2.3186 Nov-10 190.9 245.3 1.5091 3.3649 2.3628 Dec-10 191.4 250.0 1.5130 3.4294 2.3945 Jan-11 193.1 260.4 1.5265 3.5720 2.4674 Feb-11 194.4 278.8 1.5368 3.8244 2.5891 Mar-11 195.0 307.5 1.5415 4.2181 2.7727 Apr-11 194.1 325.1 1.5344 4.4595 2.8800 May-11 196.9 315.1 1.5565 4.3224 2.8288 Jun-11 205.7 316.9 1.6261 4.3471 2.8777 Jul-11 215.3 311 .5 1.7020 4.2730 2.8846 Aug-11 216.6 296.9 1.7123 4.0727 2.7981 Sep-11 215.8 306.5 1.7059 4.2044 2.8552 Oct-11 206.6 299.6 1.6332 4.1097 2.7724 Nov-11 204.0 322.7 1.6126 4.4266 2.9071 Dec-11 204.4 301 .0 1.6158 4.1289 2.7719 Jan-12 201.1 308.8 1.5897 4.2359 2.8070 Feb-12 200.3 316.5 1.5834 4.3416 2.8522 Mar-12 199.8 330.8 1.5794 4.5377 2.9403 Apr-12 198.1 327.1 1.5660 4.4870 2.9096 May-12 201.5 315.6 1.5929 4.3292 2.8516 Jun-12 207.7 284.6 1.6419 3.9040 2.6825 Jul-12 221.5 287.9 1.7510 3.9492 2.7622 Aug-12 222.1 313.4 1.7557 4.2990 2.9257 Sep-12 222.8 330.4 1.7613 4.5322 3.0359 Oct-12 214.1 334.1 1.6925 4.5830 3.0221 Nov-12 212.3 311 .6 1.6783 4.2743 2.8725 Dec-12 213.8 303.3 1.6901 4.1605 2.8265 Jan-13 199.2 303.6 1.5747 4.1646 2.7661 Feb-13 199.4 327.7 1.5763 4.4952 2.9190 Page 4

Development of E Component Enclosure 2 PG&E Letter HBL-15-003 Calculation of Energy Escalation Factor - Reference NUREG-1307, Revision 15, Section 3.2 Using Regional Indices SERIES ID: WPU0573 Light Fuel Oils (as of 03/04/15) and WPU0543 Industrial Electric Power (as of 03/04/15)

REBASED TO 1986 = 100 PPI for Fuels & PPI for Light PPI for Fuels & PPI for Light Energy Escalation Related Products Fuel Oils Related Products Fuel Oils Factor (E)

(2000 = 100) (2000=100) (2000 = 100) (2000=1 00) for BWR (P) =Industrial Energy Power (F) = Light Fuel Oils (P) =Industrial Energy Power (F) = Light Fuel Oils (Humboldt)

BWR wt = 0.54 BWR wt = 0.46 Mar-13 199.0 308.7 1.5731 4.2346 2.7974 Apr-13 198.8 303.9 1.5715 4.1687 2.7662 May-13 203.5 296.4 1.6087 4.0658 2.7390 Jun-13 211.9 294.9 1.6751 4.0453 2.7654 Jul-13 211.4 300.4 1.6711 4.1207 2.7979 Aug-13 210.4 307.4 1.6632 4.2167 2.8378 Sep-13 210.3 315.3 1.6625 4.3251 2.8873 Oct-13 201 .2 306.8 1.5905 4.2085 2.7948 Nov-13 199.0 295.3 1.5731 4.0508 2.7128 Dec-13 200.5 302.9 1.5850 4.1550 2.7672 Jan-14 215.1 297.5 1.7004 4.0809 2.7954 Feb-14 214.4 309.1 1.6949 4.2401 2.8657 Mar-14 214.8 306.5 1.6980 4.2044 2.8510 Apr-14 210.8 306.7 1.6664 4.2071 2.8351 May-14 215.2 304.4 1.7012 4.1756 2.8394 Jun-14 224.0 296.5 1.7708 4.0672 2.8271 Jul-14 227.5 295.3 1.7984 4.0508 2.8345 Aug-14 227.7 293.9 1.8000 4.0316 2.8265 Sep-14 225.1 291 .0 1.7794 3.9918 2.7971 Oct-14 216.9 272.9 1.7146 3.7435 2.6479 Nov-14 210.6 261.7 1.6648 3.5898 2.5503 Dec-14 214.7 221 .0 1.6972 3.0316 2.3110 Oct 14 through Dec 14 are Preliminary Values from PPIIndices Based on Base Year 2000 being the indice values Dec 1999, Jan 2015 base will be Dec 2014 Page 5

Development of L Component Enclosure 2 PG&E Letter HBL-15-003 Calculation of Labor Escalation Factor- Reference NUREG-1307, Revision 15, Section 3.1 Using Regional Indices SERIES ID: CIU201 00000002401 (as of 03/04/15)

Note 1: The Base Labor factor was re-indexed in December 2005, at which time the index was reset to 100.

Employment Cost lndust West Region Labor Private Industry Escalation (2005=1 00) Factor Dec-05 100 2.06000 Jan-06 Feb-06 Mar-06 100.6 2.07236 Apr-06 May-06 Jun-06 101 .8 2.09708 Jul-06 Aug-06 Sep-06 102.5 2.11150 Oct-06 Nov-06 Dec-06 103 2.12180 Jan-07 Feb-07 Mar-07 104.2 2.14652 Apr-07 May-07 Jun-07 104.9 2.16094 Jul-07 Aug-07 Sep-07 105.7 2.17742 Oct-07 Nov-07 Dec-07 106.5 2.19390 Jan-08 Feb-08 Mar-08 107.8 2.22068 Page 1

Development of L Component Enclosure 2 PG&E Letter HBL-15-003 Calculation of Labor Escalation Factor- Reference NUREG-1307, Revision 15, Section 3.1 Using Regional Indices SERIES ID: CIU201 00000002401 (as of 03/04/15)

Note 1: The Base Labor factor was re-indexed in December 2005, at which time the index was reset to 100.

Employment Cost lndust West Region Labor Private Industry Escalation (2005=1 00) Factor Dec-05 100 2.06000 Apr-08 May-08 Jun-08 108.4 2.23304 Jul-08 Aug-08 Sep-08 109.3 2.25158 Oct-08 Nov-08 Dec-08 109.4 2.25364 Jan-09 Feb-09 Mar-09 109.9 2.26394 Apr-09 May-09 Jun-09 110 2.26600 Jul-09 Aug-09 Sep-09 110.3 2.27218 Oct-09 Nov-09 Dec-09 110.6 2.27836 Jan-10 Feb-1 0 Mar-1 0 111.3 2.29278 Apr-1 0 May-10 Jun-1 0 111 .7 2.30102 Page 2

Development of L Component Enclosure 2 PG&E Letter HBL-15-003 Calculation of Labor Escalation Factor- Reference NUREG-1307, Revision 15, Section 3.1 Using Regional Indices SERIES ID: CIU201 00000002401 (as of 03/04/15)

Note 1: The Base Labor factor was re-indexed in December 2005, at which time the index was reset to 100.

Employment Cost lndust West Region Labor Private Industry Escalation (2005=1 00) Factor Dec-05 100 2.06000 Jul-10 Aug-10 Sep-1 0 112.3 2.31338 Oct-1 0 Nov-10 Dec-10 112.5 2.31750 Jan-11 Feb-11 Mar-11 113.5 2.33810 Apr-11 May-11 Jun-11 114.3 2.35458 Jul-11 Aug-11 Sep-11 114.6 2.36076 Oct-11 Nov-11 Dec-11 115.1 2.37106 Jan-12 Feb-12 Mar-12 115.7 2.38342 Apr-12 May-12 Jun-12 116.3 2.39578 Jul-12 Aug-12 Sep-12 116.8 2.40608 Page 3

Development of L Component Enclosure 2 PG&E Letter HBL-15-003 Calculation of Labor Escalation Factor- Reference NUREG-1307, Revision 15, Section 3.1 Using Regional Indices SERIES 10: CIU201 00000002401 (as of 03/04/15)

Note 1: The Base Labor factor was re-indexed in December 2005, at which time the index was reset to 100.

Employment Cost lndust West Region Labor Private Industry Escalation (2005=1 00) Factor Dec-05 100 2.06000 Oct-12 Nov-12 Dec-12 116.8 2.40608 Jan-13 Feb-13 Mar-13 117.6 2.42256 Apr-13 May-13 Jun-13 118.5 2.44110 Jul-13 Aug-13 Sep-13 119.2 2.45552 Oct-13 Nov-13 Dec-13 119.6 2.46376 Jan-14 Feb-14 Mar-14 120.1 2.47406 Apr-14 May-14 Jun-14 120.9 2.49054 Jul-14 Aug-14 Sep-14 121 .9 2.51114 Oct-14 Nov-14 Dec-14 122.5 2.52350 Page 4

Development of B Component Enclosure 2 PG&E Letter HBL-15-003 Development of Burial Escalation Developed from NUREG-1307 Revision 15 Table 2.1 "VALUES OF B SUB-X AS A FUNCTION OF LLW BURIAL SITE, WASTE VENDOR, AND YEAR" (Summary for non-Atlantic Compact)

Revised to Bx Values for Generic LLW Disposal Site are assumed to be the same as that provided for the Atlantic Compact, for lack of a better alternative at this time Revised to Bx Values for Generic LLW Disposal Site are assumed to be Combination of Compact-Affliated and Non-Compact Facility for HBPP BWR BWR Burial Costs Restated to (South Carolina) =

1986 100 1986 1.561 1.0000 1987 1988 1.831 1.1730 1989 1990 1991 2.361 1.5125 1992 1993 9.434 6.0436 1994 9.794 6.2742 1995 10.42 6.6752 1996 10.379 6.6489 1997 13.837 8.8642 1998 13.948 8.9353 1999 2000 16.244 10.4061 2001 16.474 10.5535 2002 16.705 10.7015 2003 17.337 11.1063 2004 17.970 11.5119 2005 19.391 12.4222 2006 20.813 13.3331 2007 21 .658 13.8744 2008 22.504 14.4164 2009 23.430 15.0096 2010 24.356 15.6028 2011 25.825 16.5439 2012 27.295 17.4856 2013 28.765 18.4273 2014 30.235 19.3690 2015 30.235 19.3690 Table 2.1 Note (e) Bx values for the generic site are assumed to be the same as that provided for the Atlantic Compact for lack of a better alternative at this time Note (f) Effective with NUREG-1307 , Revision 8 (Ref.3) an alternative disposal option was introduced in which the bulk of the LLW is assumed to be dispositioned by waste vendors and/or disposed of at a non-compact disposal facility Note (g) Effective with NUREG1307, Revision 15, the nomenclature for the two disposal options, referred to as "Direct Disposal" and "Direct Disposal with Vendors" in previous revisions of NUREG-1307, is changed to "Compact-Affiliated Disposal Facility Only" and "Combination of Comapct-Affiliated and Non-Compact Disposal Facilities" to better describe the options.

2013 has no information in NUREG-1307 Rev 15. 2013 is an estimate that is calculated by by applying the average% change between 2010 and 2012 and adding to the 2012 base 2014 has no information in NUREG-1307 Rev 15. 2014 is an estimate that is calculated by applying the average% change between 2010 and 2012 and adding to the 2013 base 2015 The NRC has issued Regulatory Issue Summary 2014-12, "Decommissioning Fund Status Report CalculationsUpdate to Low-Level Waste Burial Charge Information," to inform licensees that they may use low-level waste burial charge data contained in Revision 15 of NUREG-1307, Report on Waste Burial Charges: Changes in Decommissioning Waste Disposal Costs at Low-Level Waste Burial Facilities, dated January 2013, when preparing their periodic decommissioning fund status report ..

2015 HBPP submitted 2014 report with an estimated value and will continue with the 2014 estimated value in the 2015 report.

Page 1

Enclosure 3 PG&E Letter HBL-15-003 Decommissioning Cash Flow

Enclosure 3 PG&E Letter HBL-15-003 Humboldt Bay Power Plant Decommissioning Cash Flow (Note 1) 2015 Dollars Cummulative SPENT FUEL Decommission Year NRC NON- NRC MANAGEMENT TOTAL Estimate 1996 $1,678,452 $1,678,452 $1,678,452 1997 $8,663,216 $8,663,216 $10,341,668 1998 $5,573,757 $344,408 $5,918,165 $16,259,833 1999 $723,490 $2,281,454 $3,004,944 $19,264,777 2000 $85,241 $2,736,091 $2,821,332 $22,086,109 2001 $89,543 $398,012 $487,555 $22,573,664 2002 $994,127 $113,704 $1,107,831 $23,681,495 2003 $494,838 $2,539,476 $3,034,314 $26,715,809 2004 $491,070 $1,444,628 $1,935,698 $28,651,507 2005 $161,506 $1,671,769 $1,833,275 $30,484,782 2006 $1,073,612 $3,546,617 $4,620,229 $35,105,011 2007 $4,474,247 $9,240,172 $13,714,419 $48,819,430 2008 $12,590,383 $28,485,988 $41,076,371 $89,895,801 2009 $32,901,391 $3,179,956 $36,081,347 $125,977,148 2010 $56,957,494 $5,734,776 $62,692,270 $188,669,418 2011 $60,585,531 $5,495,157 $66,080,688 $254,750,106 2012 $81,577,560 $4,509,009 $86,086,569 $340,836,675 2013 $93,946,862 $4,668,626 $98,615,488 $439,452,163 2014 $79,506,970 $5,085,456 $84,592,426 $524,044,589 $524,044,589 Actual 2015 $114,650,720 $50,000 $6,007,869 $120,708,589 $644,753,178 $656,920,026 Actual + Market Value 2016 $124,984,345 $354,066 $6,007,869 $131,346,280 $776,099,458 2017 $83,092,037 $329,511 $6,007,869 $89,429,417 $865,528,875 2018 $76,580,771 $109,837 $6,007,869 $82,698,477 $948,227,352 2019 $40,373,412 $5,204,464 $45,577,876 $993,805,228 2020 $1,309,017 $5,204,464 $6,513,481 $1,000,318,709 2021 $5,204,464 $5,204,464 $1,005,523,173 2022 $5,204,464 $5,204,464 $1,010,727,637 2023 $5,204,464 $5,204,464 $1,015,932,101 2024 $5,931,332 $5,931,332 $1,021,863,433 2025 $10,913,081 $10,913,081 $1,032,776,514 TOTAL $883,559,592 $843,414 $148,373,508 $1,032,776,514 Cash Flow is based on construction of ISFSI and Fuel removed from HBPP in 2025 {Assumes DOE Used

1) Fuel Repository opens in 2024 allowing HBPP Fuel to be shipped during 2024-2025)

Market Value of Trust as of 12/2014 was $132.9 million, actual expended as of 12/2014 was $524.0

2) Million including $81.5 million Spent Fuel Management Page 1 of 1

Enclosure 4 PG&E Letter HBL-15-003 Variance of the 2014 Forecast

Enclosure 4 PG&E Letter HBL-15-003 Page 1 of 1 Estimated Costs:

2014 Forecast per PG&E Letter HBL-14-009, Enclosure 3, dated March 31, 2014, in 2014 dollars:

NRC Scope (Radiological) $156,578,721 Non-NRC Scope $ 379,500 Spent Fuel Management $ 4,942,502 Actual Costs:

2014 Actual Incurred Costs, provided in PG&E Letter HBL-15-003, Enclosure 3, dated March 31, 2015, reflects the actuals for 2014 in nominal dollars.

NRC Scope (Radiological) $ 79,506,970 Non-NRC Scope $ 0 Spent Fuel Management $ 5,085,456 Variance:

NRC Scope (Radiological) $ 77,071,751 Non-NRC Scope $ 379,500 Spent Fuel Management $ -142,954 Due to the delay in receiving approval from the California Public Utilities Commission (CPUC) to February 27, 2014, of PG&E's 2012 Nuclear Decommissioning Cost Triennial Proceeding (NDCTP) filed December 21, 2012, the Civil Works scope for remediation of the discharge canal, pre trenching of the slurry wall, and facilities demolition were delayed resulting in deferral of this work scope and activities associated with this scope.

Spent Fuel Management variance was the result of a increase in S~curity Officer overtime.