View source for DCL-16-016, Units and 2 - Updated Response to Request for Information Pursuant to 10 CFR 50.54(f) Regarding Recommendation 2.1 Flooding. Part 2 of 2

{{Adams
| number = ML16039A367
| issue date = 02/08/2016
| title = Units and 2 - Updated Response to Request for Information Pursuant to 10 CFR 50.54(f) Regarding Recommendation 2.1 Flooding. Part 2 of 2
| author name = 
| author affiliation = Pacific Gas &amp; Electric Co
| addressee name = 
| addressee affiliation = NRC/NRR
| docket = 05000275, 05000323
| license number = DPR-080, DPR-082
| contact person = 
| case reference number = DCL-16-016
| package number = ML16040A009
| document type = Response to Request for Additional Information (RAI)
| page count = 57
| project = 
| stage = Response to RAI
}}

=Text=
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Interim Action Responses," Revision 1, October 29, 2013.
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Options for Interim Actions for Challenging HRRs," Revision 1b, August 21, 2014.
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PG&E Letter DCL-16-016 Enclosure 1 Station, Units 1 and 2 Docket Nos. 50-275 and 50-323," Washington, D. C., September 10, 1976.
NRC, 1977. United States Nuclear Regulatory Commission (NRC), "Design Basis Floods for Nuclear Power Plants," Regulatory Guide 1.59, Revision 2, Washington, D. C., August 1977.
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NRC, 1978b. United States Nuclear Regulatory Commission (NRC), " Supplement No. 8 to the Safety Evaluation Report for Pacific Gas and Electric Company Diablo Canyon Nuclear Power Plants, Units 1 and 2 (Docket Nos. 50-275 and 50-323)," Washington, D.C., November 15, 1978.
NRC, 1984. United States Nuclear Regulatory Commission (NRC)," Supplement 17 to the Safety Evaluation Report for Pacific Gas and Electric Company's Application for licenses to operate Diablo Canyon Nuclear Power Plants, Units 1 and 2 (Docket Nos. 50-275 and 50-323),"
Washington, D.C., February 1984.
NRC, 1999. United States Nuclear Regulatory Commission (NRC), "Issuance of Amendments for Diablo Canyon Nuclear Power Plant, Unit No. 1 (TAC No. M97914) and Unit No.2 (TAC No.
M97915)," Washington, D.C., March 26, 1999.
NRC, 2007. United States Nuclear Regulatory Commission (NRC), "Standard Review Plan for the Review of Safety Analysis Reports for Nuclear Power Plants: LWR Edition," NUREG-0800, Washington, D.C., March, 2007.
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NUREG/CR-6966, PNNL-17397, Richland, WA, March 2009.
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NUREG/CR-7046, Washington, D.C., November, 2011.
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NRC, 2012b . .United States Nuclear Regulatory Commission (NRC), "Endorsement of Nuclear Energy Institute (NEI) 12-07, 'Guidelines for Performing Verification Walkdowns of Plant Flood Protection Features,"' May 31,2012.             \
7-4

PG&E Letter DCL-16-016 Enclosure 1 NRC, 2012c. United States Nuclear Regulatory Commission (NRC), "Guidance for Performing the Integrated Assessment for External Flooding," Interim Staff Guidance, Revision 0. JLD-ISG-2012-05, November 30, 2012.
NRC, 2013. United States Nuclear Regulatory Commission (NRC), "Guidance for Performing a Tsunami, Surge and Seiche Flooding Safety Analysis Revision 0," Japan Lessons-Learned Project Directorate Interim Staff Guidance, JLD-ISG-2012-06, January 4, 2013.
NRC, 2014. United States Nuclear Regulatory Commission (NRC), "Diablo Canyon Power
\ Plant- Staff Assessment of the Flooding Walkdown Report Supporting Implementation of Near-Term Task Force Recommendation 2.3 Related tot he Fukushima Dai-lchi Nuclear Power Plant Accident (TAC Nos. MF0221 and MF0222)," ADAMS Accession No. ML14136A194, June 23, 2014.
NRC, 1994. National Research Council (NRC), "Estimating Bounds on Extreme Precipitation Events," National Academy Press, Washington, 1994.
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Bull. Seismological Soc. Amer., 75(4), 1135-1154. 1985.
Petersen et al, 2008. Petersen, M. D., Frankel, A. D., Harmsen, S.C., Mueller, C. S., Haller, K.
M., Wheeler, R. L., Wesson, R. L., Zeng, Y., Boyd, 0. S., Perkins, D. M., Luco, N., Field, E. H.,
Wills, C. J., and Rukstales, K. S. "Documentation for the 2008 Update of the United States National Seismic Hazard Maps." U.S. Geological Survey Open-File Report 2008-1128, 61.
2008.
PGE, 2012a. PG&E Letter DCL-12-059, "Pacific Gas and Electric Company's Response to NRC Request for Information Pursuant to 10 CFR 50.54(f) Regarding the Flooding Aspects of Recommendations 2.1 and 2.3 of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident," June 7, 2012.
PGE, 2012b. PG&E Letter DCL-12-114, "Final Response to Request for Information Pursuant to 10 CFR 50.54(f) Regarding Recommendation 2.3 Flooding," November 27, 2012.
PGE, 2014. Pacific Gas and Electric Company (PG&E). "Central Coastal California Seismic Imaging Project Report." Available at Agencywide Documents Access and Management System (ADAMS) Accession Nos. ML14260A024 through ML14260A069. September 2014.
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Resio, 1982. Resio, D.T., "Report On Wave Climatology For Diablo Canyon, California" 1982.
7-5

PG&E Letter DCL-16-016 Enclosure 1 Ross et al, 2013. Ross, S.L., Jones, L.M., Miller, Kevin, P., K.A., Wein, A., Wilson, Ri.l.,
Bahng, B., Barberopoulou, A., Borrero, J.C., Brosnan, D.M., Bwarie, J.T., Geist, E.L., Johnson, L.A., Kirby, S.H., Knight, W.R., Long, K., Lynett, P., Mortensen, C.E., Nicolsky, D.J., Perry, S.C.,
Plumlee, G.S., Real, C.R., Ryan, K., Suleimani, E., Thio, H., Titov, V.V., Whitmore, P.M. and Wood, N.J., SAFRR (Science Application for Risk Reduction) Tsunami Scenario-Executive Summary and

== Introduction:==
U.S. Geological Survey Open-File Report 2013-1170-A, in Ross, S.L., and Jones, L.M., eds., The SAFRR (Science Application for Risk Reduction) Tsunami Scenario: U.S. Geological Survey Open-File Report 2013-1170, 17 p., 2013.
http:l/pubs.usgs.gov/of/2013/1170/a/
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Strange and Graham, 1982. Strange, R.R. and N. Graham, "A Hindcast of Severe Storm Waves at Diablo Canyon, California." 1982.
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Tappin et al, 2014. Tappin D. R., Grilli, S. T., Harris, J. C., Geller, R. G., Masterlark T., Kirby, J.
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Open-File Report 2013-1170-C. California Geological Survey Special Report 229. 2013.
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PG&E Letter DCL-16-016 Enclosure 1 Uslu, 2008. Uslu, B. "Deterministic and Probabilistic tsunami studies in California from near and farfield sources," PhD Dissertation, USC. ProQuest. 2008.
Whitmore, 2013. Whitmore P., Bohyun-Bahng B., and Knight, W. "Effects of subfault discretization and horizontal displacement on tsunami generation." S. L. Ross and L. M., Jones eds. Tsunami Scenario: U.S. Geological Survey Open-File Report 2013. Chp D. 2013.
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Wills, 2007. Wills, C. J., II, R. W., and Bryant, W. A. "California fault parameters for the national seismic hazard maps and working group on California earthquake probabilities. US Geological Survey Open File Report. 2007.
7-7

PG&E Letter DCL-16-016 Enclosure 1 Table 3-1                 Diablo Creek Location Used in Storm Calculations Elevation Used                100 feet Latitude                Longitude Location Used 35.211                   120.855 Table 3-2                 Storms Used in the Diablo Creek Site-Specific PMP Calculation Maximum        OCPP
                                                                                            ~ !I -         1-hmrr Total Adjustment DCPP 1-hour S t11tion Name                              L at            Lon     Year        ~'\>.fon          Dn     Rlrin.fill    factor:.        LIP OAKL.A..t
               ~"D SOUTH CA    .37.7830     -!22.1.51Jl)  1999            u              19      326          13&            450 BEl AIR HOTEL                       CA    34.03.60     -US.4550      198.3                                  3.0(1        1.40           420 OC:EA..."NSIDE                     CA    3.32560      -H l J2(}()   199'3                          16      2.95         13!!           4.1>0 LAGUNA
-     - - -BEACH  ---          _ ,_ CA    33.55!0      -R l7.SO!J.Qo  199'7          [2             *5      250          1.47           3.6S WHE.ELER GORGE - - -               CA    3436?0
                                                       -H 9_333()     199'2.          2             l2      2.32         1A3            3.32
                                                                                                        .--2~15
                                                                                               -*~-                                 ---~--
S.;.\J."'f rvLA.RCOS IROlJT CA    34..118.30   -! !9.3000     199'5           !             'lt                  lAB            3.18 DOlTI..TON TIJN~U                   CA    34-4650      -11'9:708()   1973             2             11      2.25          L35           3.04 ST.'\..!'4"DWOOD FIRE STATION      CA    34.4!50.0    -H9.6S30 198.3           9            29       1.4Q         1.19'          1S6 BOUIDER CREEK                       CA    J7J)9'l6     ... n22.1us. 1955           !2
:2~      2.20         1..29'         2.S..t
~q!QQ~!!_                           CA    .3-4534-0    -DO.l730      10()!2          12            20       1.09         1.14           2.5'9 GONZ.AI.ES.                        CA    3,6_5150     -li2U10()      199'4          H              10      2.09         1.16           2.42 SIGNAL HTI.l.                      CA    33J:&ao      -HS.1657      199'5                          4!      2.00          L19           2.3&
CANYON~                            CA    34.08.32     -tt t S.S418  194.3                         21       1.96         1..21          2.37 ARROYOSECO                          CA    3*63590      -Dl.29Q:()    19.9'3          H              11      2.01         L06            2..13 Rainfall and LIP values are in inches.
Table 3-3                 Site-Specific LIP for Various Durations at the DCPP Power Block Duration (hours)         DCPP LIP (inches) 0                        0 0.2.5                    2..5 0.5                     3.6
                                                   ~         0.75                     4.1 1-hourr                   4.5 2-hour                    5-.1 3-hour                    5..4 4-hour                     5.6 5-hour                     5.8 6-hour                    5-.9

PG&E Letter DCL-16-016 Enclosure 1 Table 3-4          Temporal Distributions of 15-Minute Incremental Point PMP at DCPP Site Front End          One-TI1urd          Center          Two-1ihErd               End Peaking            Peaking          Pealdng           Peaking               Pea:ki11g Duration      ILIP*       pup~ .. IUP              IUP               IUP                 ItiP (hours)      (inl                  (in)
PUP     (in)    PUP       (in}
PUP       (f; n)       Plll?'
0.000       0.000        0 .000    0.000     0.000  0.000     0.000   0.000      0.000   0.000         0.000 0.25{)      2.475        0.423     0.043     0.007  0.026     0.005   0.006      o.oo*r, 0.006         0.001 0.500       3.555        0.608     0.093     0.016  0.054     0.009   0.032      0.006   0.032         0.006
 .750       4.095        0.700     0."173    0.030  0.084     0.0'14  0.059      o.o*to  0.059         0.0 '10
 *t ooo      4.500        0 .769    0.269     0.046  o_*]18    0.020   0.036      0.0"15  O.OBG         0.015
  'L250      4.6B3        0.80"1    0.422     0.072  0_.161    0.028   0.115      0.020   0:1 15        0.020 "l 500     4 ..1341     0.828     0.605     o.*to3 0.2*H     0.036   0. 146     0.025   0.146         0.025
  *t750      4 .994       0.854     1."145    0.196  0.29"]    0.050   0.177      0.030   o.1n          0.030 2.000       5.130        0.877     3.620     0:.619 0.387     0.066   0.211      0.036   0.2"11        0.036, 2.250       5.226        0.8931 4.700     0.803  0.540     0.092   0.254      0.043   0.246         0.042 2.500       5.318        0.909     5.105     0.873  0.723     0.124   0.304      0.052   0.289         0.049 2.750       5..3'97      0.923     5.263     0.900  1.263     0.216   0.384      OJJ66   0.335         0.057 3.000       5.465        0.934     5.399     0.923  3:738     0.639   0.480      0.082   0.385         0.066 3.250       5.5*15       0.943     5.49'1    0.939  4.818     0.824   0.633      0."]08  0.453         0.077 3.500       5.561        0.951     5.558     0.950  5.223     0.893   0.816      0.139   0.532         0.09'1 3.750       5.604        0.95B     5.604     0.958  5.381     0 ..920 1.356      0.232   0.624         0.107 4.000       5.639        0.964     5.639     0.964  5,5"17    0.943   3.B31      0.655   0.720         0.123 4.250       5.673        0.970     5.673     0.970  5.608     0.959   4.911      0.839   0.856         0 .'146 4.500       5.704        0.975     5.704     0.975  5.676     0.970   5.316      0.909   t009          0. '1 72 4.750       5.735        0 .980    5.735     0.980  5.721     0.978   5.474      0.936   1.167         0.199 5.000       5.764        0 .985    5.764     0.985  5.757     0.984   5.6-10     0 . 959 '1.350        0.231 5.250       5.791        0.990     5.79'1    0.990  5.789     0.989   5.701      0.975   1.755         0.300 5.500       5.B18        0.994     5.818-    0.994  5.817     0.994   5.769      0.986   2.295         0.392 5.750       5.844        0.999     5.844     0.999  5.844     0.999   5.814      0.994   3.375         0.5'7 7 6.000       5.900        1.000     5.900     '1.000 5.900     '1.000  5.900      '1 .000 5.900         1.000 il IUP = cumulative UIP;- PUP= Portion of cumulative UP

PG&E Letter DCL-16-016 Enclosure 1 Table 3-5    Maximum LIP Flooding Parameters near the Doors and Areas to the West of the Turbine and Buttress Buildings MaxWD Door                                                  MaxWD Correlated                                              Grid        Max    above Threshold                                                above Door      Flood Buttress         Door/Unit                          Elevation      WSE     grid                 1 No           2   Elevation    Grid No                                     Threshold      Duration Building            No                              (ft PG&E             surface 2                                                                                            (hours)
Area                       (ft PG&E                 Datum)     (ft PG&E (ft)         (ft)
Datum)                              Datum) 0       1         2           3          4            5           6       7     (8) =(6) - (3)      9 Turbine Building Unit 1: North 1       A1 .1       86.8       1034        86 .58      86 .79   0.21        -0.01           0 A1 2       A1.2        86.8       1033        86.56       86.77    0.21        -0.03           0 3       A2 .1       86.5       1181        86.48       86.73    0.25         0.23         7.60 A2 4      8U101        86.5        877        86.48       86.58    0.10         0.08         6.90 5      8U102        86.5       1174        86.47       86 .67   0.20         0.17         3.30 6      8U103        86 .5      2106        86.45       86.64    0.19         0.14         0.55 7       A3.1        86.5       1326        86.45       86 .71   0.26         0.21         2.75 A3 8       A3.2        86.5       1633        86.47       86 .71   0.24         0.21         3.05 9       A3.3        86.5      2268         86.45       86 .62   0.17         0.12         0.45 10     8U104/5       86 .5     2600         86.47       86.66    0.19         0.16         3.20 11      101-1        86.8       1975        86.78       87.02    0.24         0.22         7.05 12      102-1        86.8       1655        86.73       87 .00   0.27         0.20         0.60 N/A 13      119-1        86.8      3507         86 .78      87.24    0.46         0.44         6.65 14      122-1        86.8      4238         86.77       87.43    0.66         0.63         5.10 15       C1 .1       86 .8     2944         86 .77      86 .93   0.16         0.13         4.50 c      16       129         86 .8     3118         86 .78      86.92    0.14         0.12         6.80 17       130         86 .8     3117         86 .77      86.86    0.09         0.06         2.95 Turbine Building Unit 2: South c      18       C1 .2       86.8      3469         86.77       87.04    0.27         0.24         5.30 19     8U101-2       86.7      3112         86.47       86.68    0.21        -0.02           0 20     8U1 02-2     86.65      3108         86.58       86.65    0.07         0.00           0 83 21     8U103-2       86.5      3101         86.36       86.42    0.06        -0.08           0 22     8U104-2       86.5      3454         86.36       86.46    0.10        -0 .04         0 23     8U108-2       86.5      4570         86.47       86.64    0.17         0.14         3.80 24     8U105-2       86.5      4760         86.48       86.62    0.14         0.12        6.40 82 25     8U106-2       86 .7     5350         86.64       86.86    0.22         0.16        2.85 26       82.1        86.8      5550         86.77       86 .91   0.14         0.11        3.20 27       81.1        86.8      5749         86.76       86 .87   0.11         0.07        0.35 81 28       81.2        86 .8     5950         86 .79      86 .93   0.14         0.13        7.35 29      101-2        86 .8     7412         86.77       87.12    0.35         0.32        4.35 30      102-2        86.8      7198         86 .78      87.12    0.34         0.32        6.75 N/A 31      119-2        86 .8     8287         86.78       87.23    0.45        0.43         7.05 32      122-2        86 .8     7431         86.78       87.31    0.53        0.51         6.55

PG&E Letter DCL-16-016 Enclosure 1 MaxWD Door                                                        MaxWD Correlated                                                    Grid          Max      above Threshold                                                      above Door      Flood Buttress             Door/Unit                            Elevation       WSE         grid No            2     Elevation     Grid No                                         Threshold 1    Duration Building                No                                (ft PG&E                 surface 2                                                                                                      (hours)
Area                            (ft PG&E                  Datum)      (ft PG&E (ft)         (ft)
Datum)                                Datum) 0          1         2            3           4            5            6           7     (8) =(6) - (3)      9 Unit 1 -Auxiliary Building Area (Ventilation Building) 33       192-1        86.8        5003         86 .78      87.48        0.70         0.68         6.95 N/A        34       191-1        86.8        7054         86.79        87.36       0.57         0.56         6.75 35       194-1        86 .8       6425         86 .77      87.35        0.58         0.55         5.20 Unit 2 -Auxiliary Building Area (Ventilation Building) 36       192-2        86 .8       7223         86.79        87.39       0.60         0.59         6.85 191-2 N/A        37                    86.8        11520        86.78       87.28        0.50         0.48         6.45 191A-2 38       194-2        86.8        10338        86.73       87.26        0.53         0.46         1.30 Fuel Handling Building (East of Unit 1) 39       363-1       116.8        8566        116.78       116.90       0.12         0.10         6.50 40        361-1       116.8        9681        116.78       117.19       0.41         0.39         6.00 N/A       41        360-1       116.8        9680        116.79       117.19       0.40         0.39         7.20 42        355-1       116.8        10367       116.76       117.25       0.49         0.45         3.80 43        354-1       116.8        10599       116.79       117.25       0.46         0.45         7.05 Fuel Handling Building (East of Unit 2) 44        360-2       116.8        11300       116.75       117.26       0.51         0.46         5.65 N/A       45        361-2       116.8        11536       116.76       117.26       0.50         0.46         5.30
[0.04]        [0.02]
46        363-2       116.8        12486       116.78       116.82                                 6.40 0.05**        0.05**
: 1. Negative value reflects no Ll P exceed a nee near the doors or areas
: 2. Door/Unit Nos. are shown in Figures 3-2a and 3-2b.
**    Minimum ponding depth taken as 0.05 feet.

PG&E Letter DCL-16-016 Enclosure 1 Table 3-6     Hydrodynamic and Total Associated Effects Resulting from LIP Flood Event 3
Velocity     Total Head          1 No. Door/Unit No2 Grid Cell No   Flow Depth (ft)                                Force {lb/ft)
Magnitude {ft/s)      {ft)
Turbine Building Unit 1: North 1       A1 .1         1034            0.00              0.00           1.00           0 2       A1 .2         1033            0.00              0.00           1.00           0 3       A2 .1         1181            0.22              0.55           1.23           9 4      BU101           877            0.08              0.23           1.08           3 5      BU102          1174            0.17              0.35           1.17           6 6      BU103          2106            0.14              0.21           1.14           5 7       A3.1          1326            0.21              0.19           1.21           8 8       A3.2          1633            0.20              0.09           1.20           8 9       A3.3          2268            0.12              0.10           1.12           4 10     BU104/5         2600            0.16              0.26           1.16           6 11      101-1          1975            0.20              0.41           1.21           8 12      102-1          1655            0.19              0.23           1.19           7 13      119-1          3507            0.42              0.25           1.43          19 14      122-1         4238             0.60              0.00           1.60          30 15       C1.1         2944             0.13              0.26           1.13          5 16       129           3118            0.12             0.35            1.12          4 17       130           3117            0.06              0.21           1.06          2 Turbine Building Unit 2: South 18       C1.2          3469            0.24             0.64            1.25          9 19     BU101-2        3112             0.00             0.00            1.00          0 20     BU102-2        3108             0.00             0.00            1.00          0 21     BU103-2        3101             0.00             0.00            1.00          0 22     BU104-2        3454             0.00             0.00            1.00          0 23     BU108-2        4570             0.13             0.15            1.13          5 24     BU105-2        4760             0.12             0.33            1.12          4 25     BU106-2        5350             0.16             0.52            1.16          6 26       B2.1         5550             0.10             0.31            1.11          4 27       B1 .1        5749             0.07             0.11            1.07          2 28       B1.2         5950             0.13             0.19            1.13          5 29      101-2         7412            0.31              0.24            1.31         13 30      102-2         7198            0.31              0.23            1.31         13 31      119-2         8287            0.42              0.28            1.42         19 32      122-2         7431            0.51              0.33            1.51         24

PG&E Letter DCL-16-016 Enclosure 1 3
2                                      Velocity       Total Head          1 No. Door/Unit No    Grid Cell No    Flow Depth (ft)                                 Force (lb/ft)
Magnitude (ft/s)        (ft)
Unit 1 -Auxiliary Building Area (Ventilation Building) 33        192-1            5003             0.67              0.13            1.67          35 34        191-1            7054             0.55              0.06            1.55          27 35        194-1            6425             0.53              0.12            1.53          25 Unit 2 -Auxiliary Building Area (Ventilation Building) 36        192-2            7223             0.59              0.22            1.59          29 191-2 37                         11520            0.47              0.20            1.47          21 191A-2 38        194-2            10338            0.45              0.07            1.45          20 Fuel Handling Building (East of Unit 1) 39        363-1            8566             0.10              0.24            1.10           3 40        361-1            9681             0.39              0.00            1.39          17 41        360-1            9680             0.39              0.15            1.39          17 42        355-1            10367            0.45              0.09            1.45          20 43        354-1            10599            0.45              0.10            1.45          20 Fuel Handling Building (East of Unit 2) 44        360-2            11300            0.45              0.06            1.45          20 45        361-2            11536            0.45              0.28            1.46          21 46        363-2            12486            0.02              0.00            1.02           1
: 1. Total force (force per linear foot length) is rounded to the nearest whole number.
: 2. Door/Unit Nos. are shown in Figures 3-2a and 3-2b.
: 3. Per American Society of Civil Engineers 7-10, the static water level should be increased by 1 ft. However, if no flow depth or velocity is present, total force= 0 lb/ft.

PG&E Letter DCL-16-016 Enclosure 1 Table 3-7  GEV Fitted Precipitation Estimates and 90%, Cl at DCPP Site 1,000,000 Years Return Period Lower 90% Cl Lower Limit                  2.84 inches Upper 90%, Cl Lower Limit                 3.60 inches Mean Precipitation                        3.17 inches

PG&E Letter DCL-16-016 Table 3-8 General Storm PMP (Page 1 of 7)                             Enclosure 1 15-Minute Incremental General Storm PMP Depths (inches) for Five Temporal Distributions Time (hours)
One-Third         Center      Two-Thirds Front Peaking                                            End Peaking Peaking        Peaking        Peaking 0          0.0000         0.0000         0.0000         0.0000     0.0000 0.25         0.6551         0.0711         0.0199         0.0192     0.0192 0.5         0.6174         0.0719         0.0212         0.0199     0.0199 0.75         0.5812         0.0727         0.0225         0.0205     0.0205 1          0.5464         0.0735         0.0238         0.0212     0.0212 1.25         0.3187         0.0742         0.0251         0.0219     0.0219 1.5         0.3157         0.0749         0.0264         0.0225     0.0225 1.75         0.3127         0.0757         0.0277         0.0232     0.0232 2          0.3097         0.0764         0.0290         0.0238     0.0238 2.25         0.3068         0.0771         0.0302         0.0245     0.0245 2.5         0.3038         0.0778         0.0315         0.0251     0.0251 2.75         0.3007         0.0785         0.0327         0.0258     0.0258 3          0.2977         0.0792         0.0339         0.0264     0.0264 3.25         0.2947         0.0798         0.0351         0.0271     0.0271 3.5         0.2917         0.0805         0.0363         0.0277     0.0277 3.75         0.2886         0.0811         0.0375         0.0283     0.0283 4          0.2856         0.0818         0.0387         0.0290     0.0290 4.25         0.2825         0.0824         0.0399         0.0296     0.0296 4.5         0.2794         0.0830         0.0410         0.0302     0.0302 4.75         0.2764         0.0836         0.0422         0.0309     0.0309 5          0.2733         0.0842         0.0433         0.0315     0.0315 5.25          0.2702         0.0847         0.0444         0.0321     0.0321 5.5         0.2671         0.0853         0.0455         0.0327     0.0327 5.75          0.2640         0.0858         0.0466         0.0333     0.0333 6          0.2608         0.0864         0.0477         0.0339     0.0339 6.25         0.2577         0.0869         0.0488         0.0345     0.0345 6.5         0.2546         0.0874         0.0498         0.0351     0.0351 6.75         0.2514         0.0879         0.0509         0.0357     0.0357 7          0.2482         0.0884         0.0519         0.0363     0.0363 7.25         0.2451         0.0889         0.0530         0.0369     0.0369 7.5         0.2419         0.0894         0.0540         0.0375     0.0375 7.75         0.2387         0.0898         0.0550         0.0381     0.0381 8          0.2355         0.0903         0.0560         0.0387     0.0387 8.25         0.2323         0.0907         0.0570         0.0393     0.0393 8.5         0.2291        0.0911          0.0579         0.0399     0.0399 8.75         0.2259        0.0915          0.0589         0.0404     0.0404 9          0.2227        0.0919          0.0598         0.0410     0.0410 9.25          0.2194        0.0923          0.0608         0.0416     0.0416 9.5          0.2162        0.0927          0.0617         0.0422     0.0422 9.75          0.2129        0.0931          0.0626         0.0427     0.0427 10          0.2097        0.0934          0.0635         0.0433     0.0433 10.25         0.2064        0.0938          0.0644         0.0439     0.0439 10.5         0.2031        0.0941          0.0653         0.0444     0.0444

PG&E Letter DCL-16-016 Table 3-8 General Storm PMP (Page 2 of 7)                              Enclosure 1 15-Minute Incremental General Storm PMP Depths (inches) for Five Temporal Distributions Time (hours)
One-Third          Center      Two-Thirds Front Peaking                                            End Peaking Peaking         Peaking       Peaking 10.75        0.1998         0.0944          0.0661        0.0450     0.0450 11         0.1965         0.0947          0.0670        0.0455     0.0455 11.25        0.1932         0.0950          0.0679        0.0461     0.0461 11.5        0.1899         0.0953          0.0687        0.0466     0.0466 11.75        0.1866         0.0956          0.0695        0.0472     0.0472 12         0.1832         0.0959          0.0703        0.0477     0.0477 12.25        0.0988         0.0961          0.0711        0.0482     0.0482 12.5        0.0988         0.0964          0.0719        0.0488     0.0488 12.75        0.0988         0.0966          0.0727        0.0493     0.0493 13         0.0988         0.0968          0.0735        0.0498     0.0498 13.25        0.0988         0.0970          0.0742        0.0504     0.0504 13.5        0.0988         0.0972          0.0749        0.0509     0.0509 13.75        0.0988         0.0974          0.0757        0.0514     0.0514 14         0.0988         0.0976          0.0764        0.0519     0.0519 14.25        0.0988         0.0977          0.0771        0.0524     0.0524 14.5        0.0988         0.0979          0.0778        0.0530     0.0530 14.75        0.0987         0.0980          0.0785        0.0535     0.0535 15         0.0987         0.0982          0.0792        0.0540     0.0540 15.25        0.0987         0.0983          0.0798        0.0545     0.0545 15.5        0.0987         0.0984          0.0805        0.0550     0.0550 15.75        0.0986         0.0985          0.0811        0.0555     0.0555 16         0.0986         0.0986          0.0818        0.0560     0.0560 16.25        0.0986         0.0986        ' 0.0824        0.0565     0.0565 16.5        0.0985         0.0987          0.0830        0.0570     0.0570 16.75        0.0985         0.0987          0.0836        0.0574     0.0574 17         0.0984         0.0988          0.0842        0.0579     0.0579 17.25        0.0984         0.0988          0.0847        0.0584     0.0584 17.5        0.0983         0.0988          0.0853        0.0589     0.0589 17.75        0.0983         0.0988          0.0858        0.0594     0.0594 18         0.0982         0.0988          0.0864        0.0598     0.0598 18.25        0.0982         0.1866          0.0869        0.0603     0.0603 18.5        0.0981         0.1932          0.0874        0.0608     0.0608 18.75        0.0980         0.1998          0.0879        0.0612     0.0612 19         0.0980         0.2064          0.0884        0.0617     0.0617 19.25        0.0979         0.2129          0.0889    I 0.0622     0.0622 19.5        0.0978         0.2194          0.0894        0.0626     0.0626 19.75        0.0977         0.2259          0.0898        0.0631     0.0631 20         0.0977         0.2323          0.0903        0.0635     0.0635 20.25        0.0976         0.2387          0.0907        0.0640     0.0640 20.5         0.0975         0.2451          0.0911        0.0644     0.0644 20.75        0.0974         0.2514          0.0915        0.0648     0.0648 21         0.0973         0.2577          0.0919        0.0653     0.0653 21.25        0.0972         0.2640          0.0923        0.0657     0.0657

PG&E Letter DCL-16-016 Table 3-8 General Storm PMP (Page 3 of 7)                             Enclosure 1 15-Minute Incremental General Storm PMP Depths (inches) for Five Temporal Distributions Time (hours)
One-Third         Center      Two-Thirds Front Peaking                                            End Peaking Peaking        Peaking        Peaking 21.5        0.0971         0.2702         0.0927         0.0661     0.0661 21.75        0.0970         0.2764         0.0931         0.0666     0.0666 22         0.0969         0.2825         0.0934         0.0670     0.0670 22.25        0.0968         0.2886         0.0938         0.0674     0.0674 22.5        0.0967         0.2947         0.0941         0.0679     0.0679 22.75        0.0966         0.3007         0.0944         0.0683     0.0683 23         0.0965         0.3068         0.0947         0.0687     0.0687 23 .25       0.0964         0.3127         0.0950         0.0691     0.0691 23.5        0.0962         0.3187         0.0953         0.0695     0.0695 23.75        0.0961         0.5812         0.0956         0.0699     0.0699 24         0.0960         0.6551         0.0959         0.0703     0.0703 24.25        0.0959         0.6174         0.0961         0.0711     0.0707 24.5        0.0957         0.5464         0.0964         0.0719     0.0711 24.75        0.0956         0.3157         0.0966         0.0727     0.0715 25         0.0955         0.3097         0.0968         0.0735     0.0719 25.25        0.0953         0.3038         0.0970         0.0742     0.0723 25.5        0.0952         0.2977         0.0972         0.0749     0.0727 25.75        0.0950         0.2917         0.0974         0.0757     0.0731 26         0.0949         0.2856         0.0976         0.0764     0.0735 26.25        0.0947         0.2794         0.0977         0.0771     0.0738 26.5        0.0946         0.2733         0.0979         0.0778     0.0742 26.75        0.0944         0.2671         0.0980         0.0785     0.0746 27         0.0943         0.2608         0.0982         0.0792     0.0749 27.25        0.0941         0.2546         0.0983         0.0798     0.0753 27.5        0.0939         0.2482         0.0984         0.0805     0.0757 27.75        0.0938         0.2419         0.0985         0.0811     0.0760 28         0.0936         0.2355         0.0986         0.0818     0.0764 28.25        0.0934         0.2291         0.0986         0.0824     0.0768 28.5        0.0933         0.2227         0.0987         0.0830     0.0771 28.75        0.0931         0.2162         0.0987         0.0836     0.0775 29         0.0929         0.2097         0.0988         0.0842     0.0778 29.25        0.0927         0.2031         0.0988         0.0847     0.0782 29.5        0.0925         0.1965         0.0988         0.0853     0.0785 29.75        0.0923         0.1899         0.0988         0.0858     0.0788 30         0.0921         0.1832         0.0988         0.0864     0.0792 30.25        0.0919         0.0988         0.1866         0.0869     0.0795 30.5        0.0917         0.0988         0.1932         0.0874     0.0798 30.75        0.0915         0.0988         0.1998         0.0879     0.0802 31         0.0913         0.0988         0.2064         0.0884     0.0805 31.25        0.0911         0.0988         0.2129         0.0889     0.0808 31.5        0.0909         0.0987         0.2194         0.0894     0.0811 31.75        0.0907         0.0987         0.2259         0.0898     0.0814 32         0.0905         0.0986         0.2323         0.0903     0.0818

PG&E Letter DCL-16-016 Table 3-8 General Storm PMP (Page 4 of 7)                                Enclosure 1 15-Minute Incremental General Storm P:tvfP Depths (inches) for Five Temporal Distributions Time (hours)
One-Third         Center      Two-Thirds Front Peaking                                              End Peaking Peaking        Peaking        Peaking 32.25        0.0903         0.0985         0.2387         0.0907        0.0821 32.5        0.0900         0.0984         0.2451         0.0911        0.0824 32.75        0.0898         0.0983         0.2514         0.0915        0.0827 33         0.0896         0.0982         0.2577         0.0919        0.0830 33.25        0.0894         0.0981         0.2640         0.0923        0.0833 33.5        0.0891         0.0980         0.2702         0.0927        0.0836 33.75        0.0889         0.0978         0.2764         0.0931        0.0839 34         0.0887         0.0977         0.2825         0.0934        0.0842 34.25        0.0884         0.0975         0.2886         0.0938        0.0844 34.5        0.0882         0.0973         0.2947         0.0941        0.0847 34.75        0.0879         0.0971         0.3007         0.0944        0.0850 35         0.0877         0.0969         0.3068         0.0947        0.0853 35.25        0.0874         0.0967         0.3127         0.0950        0.0856 35.5        0.0872         0,0965         0.3187         0.0953        0.0858 35.75        0.0869         0.0962         0.5812         0.0956        0.0861 36         0.0866         0.0960         0.6551         0.0959        0.0864 36.25        0.0864         0.0957         0.6174         0.0961        0.0866 36.5        0.0861         0.0955         0.5464         0.0964        0.0869 36.75        0.0858         0.0952         0.3157         0.0966        0.0872 37         0.0856         0.0949         0.3097         0.0968        0.0874 37.25        0.0853         0.0946         0.3038         0.0970        0.0877 37.5        0.0850         0.0943         0.2977         0.0972        0.0879 37.75        0.0847         0.0939         0.2917         0.0974        0.0882 38         0.0844         0.0936         0.2856         0.0976        0.0884 38.25        0.0842         0.0933         0.2794         0.0977        0.0887 38.5        0.0839         0.0929         0.2733         0.0979        0.0889 38.75        0.0836         0.0925         0.2671         0.0980        0.0891 39         0.0833         0.0921         0.2608         0.0982        0.0894 39.25        0.0830         0.0917         0.2546         0.0983        0.0896 39.5        0.0827         0.0913         0.2482         0.0984        0.0898 39.75        0.0824         0.0909         0.2419         0.0985        0.0900 40         0.0821         0.0905         0.2355         0.0986        0.0903 40.25        0.0818         0.0900         0.2291         0.0986        0.0905 40.5        0.0814         0.0896         0.2227         0.0987        0.0907 40.75        0.0811         0.0891         0.2162         0.0987        0.0909 41         0.0808         0.0887         0.2097         0.0988        0.0911 41.25        0.0805         0.0882         0.2031         0.0988        0.0913 41.5        0.0802         0.0877         0.1965         0.0988        0.0915 41.75        0.0798         0.0872         0.1899         0.0988        0.0917 42         0.0795         0.0866         0.1832         0.0988        0.0919 42.25        0.0792         0.0861         0.0988         0.1866        0.0921 42 .5       0.0788         0.0856         0.0988         0.1932        0.0923 42.75        0.0785         0.0850         0.0988         0.1998        0.0925

PG&E Letter DCL-16-016 Table 3-8 General Storm PMP (Page 5 of 7)                             Enclosure 1 15-Minute Incremental General Storm PMP Depths (inches) for Five Temporal Distributions Time (hours)
One-Third         Center      Two-Thirds Front Peaking                                            End Peaking Peaking        Peaking        Peaking 43         0.0782         0.0844 .       0.0988         0.2064     0.0927 43.25        0.0778         0.0839         0.0988         0.2129     0.0929 43.5        0.0775         0.0833         0.0987         0.2194     0.0931 43.75        0.0771         0.0827         0.0987         0.2259     0.0933 44         0.0768         0.0821         0.0986         0.2323     0.0934 44.25        0.0764         0.0814         0.0985         0.2387     0.0936 44.5        0.0760         0.0808         0.0984         0.2451     0.0938 44.75        0.0757         0.0802         0.0983         0.2514     0.0939 45         0.0753         0.0795         0.0982         0.2577     0.0941 45.25        0.0749         0.0788         0.0981         0.2640     0.0943 45.5        0.0746         0.0782         0.0980         0.2702     0.0944 45.75        0.0742         0.0775         0.0978         0.2764     0.0946 46         0.0738         0.0768         0.0977         0.2825     0.0947 46.25        0.0735         0.0760         0.0975         0.2886     0.0949 46.5        0.0731         0.0753         0.0973         0.2947     0.0950 46.75        0.0727         0.0746         0.0971         0.3007     0.0952 47         0.0723         0.0738         0.0969         0.3068     0.0953 47.25        0.0719         0.0731         0.0967         0.3127     0.0955 47.5        0.0715         0.0723         0.0965         0.3187     0.0956 47.75        0.0711         0.0715         0.0962         0.5812     0.0957 48         0.0707         0.0707         0.0960         0.6551     0.0959 48 .25       0.0703         0.0703         0.0957         0.6174     0.0960 48.5        0.0699         0.0699         0.0955         0.5464     0.0961 48.75        0.0695         0.0695         0.0952         0.3157     0.0962 49         0.0691         0.0691         0.0949         0.3097     0.0964 49.25        0.0687         0.0687         0.0946         0.3038     0.0965 49.5        0.0683         0.0683         0.0943         0.2977     0.0966 49.75        0.0679         0.0679         0.0939         0.2917     0.0967 50         0.0674         0.0674         0.0936         0.2856     0.0968 50.25        0.0670         0.0670         0.0933         0.2794     0.0969 50.5        0.0666         0.0666         0.0929         0.2733     0.0970 50.75        0.0661         0.0661         0.0925         0.2671     0.0971 51         0.0657         0.0657         0.0921         0.2608     0.0972 51.25        0.0653         0.0653         0.0917         0.2546     0.0973 51.5        0.0648         0.0648         0.0913         0.2482     0.0974 51.75        0.0644         0.0644         0.0909         0.2419     0.0975 52         0.0640         0.0640         0.0905         0.2355     0.0976 52 .25       0.0635         0.0635         0.0900         0.2291     0.0977 52.5        0.0631         0.0631         0.0896         0.2227     0.0977 52.75        0.0626         0.0626         0.0891         0.2162     0.0978 53         0.0622         0.0622         0.0887         0.2097     0.0979 53.25        0.0617         0.0617         0.0882         0.2031     0.0980 53.5        0.0612         0.0612         0.0877         0.1965     0.0980

PG&E Letter DCL-16-016 Table 3-8 General Storm PMP (Page 6 of 7)                                 Enclosure 1 15-M:inute Incremental General Storm Pl\IIP Depths (inches) for Five Temporal Distributions Time (hours)
One-Third         Center      Two-Thirds Front Peaking                                               End Peaking Peaking        Peaking        Peaking 53.75        0.0608          0.0608         0.0872         0.1899        0.0981 54         0.0603          0.0603         0.0866         0.1832        0.0982 54.25        0.0598          0.0598         0.0861         0.0988        0.0982 54.5        0.0594          0.0594         0.0856         0.0988        0.0983 54.75        0.0589          0.0589         0.0850         0.0988        0.0983 55         0.0584          0.0584         0.0844         0.0988        0.0984 55.25        0.0579          0.0579         0.0839         0.0988        0.0984 55.5        0.0574          0.0574         0.0833         0.0987        0.0985 55.75        0.0570          0.0570         0.0827         0.0987        0.0985 56         0.0565          0.0565         0.0821         0.0986        0.0986 56.25        0.0560          0.0560         0.0814         0.0985        0.0986 56.5        0.0555          0.0555         0.0808         0.0984        0.0986 56.75        0.0550          0.0550         0.0802         0.0983        0.0987 57         0.0545          0.0545         0.0795         0.0982        0.0987 57.25        0.0540          0.0540         0.0788         0.0981        0.0987 57.5        0.0535          0.0535         0.0782         0.0980        0.0987 57.75        0.0530          0.0530         0.0775         0.0978        0.0988 58         0.0524          0.0524         0.0768         0.0977        0.0988 58.25        0.0519          0.0519         0.0760         0.0975        0.0988 58.5        0.0514          0.0514         0.0753         0.0973        0.0988 58 .75       0.0509          0.0509         0.0746         0.0971        0.0988 59         0.0504          0.0504         0.0738         0.0969        0.0988 59.25        0.0498          0.0498         0.0731         0.0967        0.0988 59.5        0.0493          0.0493         0.0723         0.0965        0.0988 59.75        0.0488          0.0488         0.0715         0.0962        0.0988 60         0.0482          0.0482         0.0707         0.0960        0.0988 60.25        0.0477          0.0477         0.0699         0.0957        0.1832 60.5        0.0472          0.0472         0.0691         0.0955        0.1866 60.75        0.0466          0.0466         0.0683         0.0952        0.1899 61         0.0461          0.0461         0.0674         0.0949        0.1932 61 .25       0.0455          0.0455         0.0666         0.0946        0.1965 61.5        0.0450          0.0450         0.0657         0.0943        0.1998 61.75        0.0444          0.0444         0.0648         0.0939        0.2031 62         0.0439          0.0439         0.0640         0.0936        0.2064 62.25        0.0433          0.0433         0.0631         0.0933        0.2097 62.5        0.0427          0.0427         0.0622         0.0929        0.2129 62.75        0.0422          0.0422         0.0612         0.0925        0.2162 63         0.0416          0.0416         0.0603         0.0921        0.2194 63.25        0.0410          0.0410         0.0594         0.0917        0.2227 63.5        0.0404          0.0404         0.0584         0.0913        0.2259 63 .75       0.0399          0.0399         0.0574         0.0909        0.2291 64         0.0393          0.0393         0.0565         0.0905        0.2323 64.25        0.0387          0.0387         0.0555         0.0900        0.2355

PG&E Letter DCL-16-016 Table 3-8 General Storm PMP (Page 7 of 7)                             Enclosure 1 15-Minute Incremental General Storm PMP Depths (inches) for Five Temporal Distributions Time (hours)
One-Third         Center      Two-Thirds Front Peaking                                           End Peaking Peaking        Peaking        Peaking 64.5        0.0381         0.0381         0.0545         0.0896     0.2387 64.75        0.0375         0.0375         0.0535         0.0891     0.2419 65         0.0369         0.0369         0.0524         0.0887     0.2451 65.25        0.0363         0.0363         0.0514         0.0882     0.2482 65.5        0.0357         0.0357         0.0504         0.0877     0.2514 65.75        0.0351         0.0351         0.0493         0.0872     0.2546 66         0.0345         0.0345         0.0482         0.0866     0.2577 66.25        0.0339         0.0339         0.0472         0.0861     0.2608 66.5        0.0333         0.0333         0.0461         0.0856     0.2640 66.75        0.0327         0.0327         0.0450         0.0850     0.2671 67         0.0321         0.0321         0.0439         0.0844     0.2702 67.25        0.0315         0.0315         0.0427         0.0839     0.2733 67.5        0.0309         0.0309         0.0416         0.0833     0.2764 67.75        0.0302         0.0302         0.0404         0.0827     0.2794 68         0.0296         0.0296         0.0393         0.0821     0.2825 68.25        0.0290         0.0290         0.0381         0.0814     0.2856 68.5        0.0283         0.0283         0.0369         0.0808     0.2886 68.75        0.0277         0.0277         0.0357         0.0802     0.2917 69         0.0271         0.0271         0.0345         0.0795     0.2947 69.25        0.0264         0.0264         0.0333         0.0788     0.2977 69.5        0.0258         0.0258         0.0321         0.0782     0.3007 69.75        0.0251         0.0251         0.0309         0.0775     0.3038 70         0.0245         0.0245         0.0296         0.0768     0.3068 70.25        0.0238         0.0238         0.0283         0.0760     0.3097 70.5        0.0232         0.0232         0.0271         0.0753     0.3127 70.75        0.0225         0.0225         0.0258         0.0746     0.3157 71         0.0219         0.0219         0.0245         0.0738     0.3187 71.25        0.0212         0.0212         0.0232         0.0731     0.5464 71.5        0.0205         0.0205         0.0219         0.0723     0.5812 71.75        0.0199         0.0199         0.0205         0.0715     0.6174 72         0.0192         0.0192         0.0192         0.0707     0.6551 Total        30.90          30.90          30.90           30.90      30.90

PG&E Letter DCL-16-016 Enclosure 1 Table 3-9      Wind Speeds and Direction (by date) of Analyzed NDBC Buoys along the California Central Coast Wind Direction Avg        St Dev Wind Direction      Max Daily Wind Speed      Avg Daily Wind Speed       St Dev Wind Speed Year   Month   Date  46011   46023      46028  46011     46023      46028 46011     46023     46028 46011      46023    46028 46011      46023    46028 2008     2      24   175.0    179.8             24.4       30.4            17.5      20.1            9.8        10.0           4.2        5.0 2008     2      25   316.8    326.3             32.1       33.3             9.5       9.9            6.0         7.1           2.0        2.1 2007    12       4   329.7    340.0             11.3       8.3             10.8      11.8            7.2         8.1           1.8        2.1 2001     1      11   218.7    214.0      206.4  33.6       32.3      27.7  14.5      16.3      13.3  8.7        10.0      9.1  2.4        2.4      2.3 2001     1      12   189.1    189.3      229.3  40.9       44.4      90.4  12.9      12.8       9.8  7.2         7.4      5.8  3.2        3.9      2.7 2007    12       5   336.3    340.6             10.9        9.1            11.5      12.5            8.3        10.0           1.5        1.2 2004     2      26   216.4    238.8      234.3  56.6       52.5      35.8   7.2       7.7       8.6   4.5        5.2      5.9  1.7        1.4      1.4 2007     1       5   319.8    283.5      347.0  68.7      128.0       5.5  16.4      18.6      17.3  12.9       14.5     15.5  2.4        2.9      1.0 2008     1       5   191.5    210.8             34.6       34.7            14.2      14.2            5.4         5.6           3.8        4.1 2000    12      22   330.4    312.5      306.9  10.1        8.0      17.0  10.2      11.4       9.1  7.6         8.7      5.2  1.7        1.8      2.4 1999     4       4   308.2    299.5      312.0  11.3        7.5       5.7  18.4       20.9     18.1  12.7       15.2     14.3  3.1        3.0      2.3 1999     1      27   169.7    258.0      322.3 154.9      132.2       6.6  10.7      13.2      13.0   6.3        8.4      9.9  1.6        2.0      1.6 2001    12      21   267.8               268.1  37.4                 37.3  11.8       13.0     13.8   8.1        9.2     10.1  1.9        2.1      2.0 1998    12       9   174.5    282.0      278.2 164.9      124.7      90.8  10.9      13.1      13.0   7.1        8.9      9.5  1.8        1.8      4.0 1998    12       1   192.3    163.4      220.8 137.1      135.7      98.7  10.7       12.7     10.6   5.2        5.5      6.9  2.6        3.4      2.3 1999     1      26   259.0    256.2      265.0  20.2       14.3      14.0  11.2       14.0     10.7   6.6        8.1      7.0  2.2        2.6      2.0 2000    12      23   316.5    312.2      318.5  67.4        9.1       6.5  10.5       12.6     11.8   6.7       10.2      9.1  2.6        1.7      0.9 2001     5       2   321.8    324.4      315.8   4.1        5.2       4.4  12.3       14.0     17.2   9.8       12.0     14.9  1.4        1.2      1.2 2009    11       8   332.3    272.5             15.6      141.1            10.5       13.4     13.3   8.2        9.8      8.7  1.3        1.5      2.6 1998    11      26   260.6    299.0      249.5 125.9       59.9      90.4   9.5        9.7      6.0   4.5        5.8      3.1  2.0        1.6      1.8 2009    11       7   319.2    333.5              5.2        4.3            11.8       14.2     14.5   9.5       11.2     11.5  1.3        1.6      2.1 2008     5      22   315.7    327.5      326.6   5.6        4.8       3.2  15.1       18.2     17.2  13.4       15.8     15.8  1.5        1.6      1.1 2008     1       6   229.0    224.3             62.8       74.3            10.6       11.4            5.5        6.0           2.5        2.8 1999     2      17   221.4    290.7      241.5 118.3       20.0      65.9   8.2        9.0      6.1   3.3        4.3      3.9  2.1        2.2      1.1 Wind Speeds - m/s Wind Direction - degrees

PG&E Letter DCL-16-016 Enclosure 1 Table 3-10    Maximum Daily Wave Heights and Direction (by date) of Analyzed NDBC Buoys along the California Central Coast Maxi Daily Wave Height               Max Daily Peak Wave Period               Avg Daily Wave Direction               Std Dev, Wave Direction        i Year  Month  Date 46011   46023     46028    46215 46218  46011  46023     46028    46215   46218  46011      46028     46215      46218   46011     46028    46215      46218  I 2008    2     24   6.99    7.42      5.78     5.58  9.97  21.05  20.00      19.05    20.00  20.00  228.0      210.8     225.2      214.4    43.0      46.2     30.5       57.9  i I
2008    2     25   6.95    7.26      5.68     5.04   7.5  17.39  20.00      16.00    18.18  18.18  272.5      281.6     254.9      271.1     5.1      10.1     7.1        4.6 2007   12      4   5.05    5.73      5.92      4.2  7.37  19.05  20.00      19.05    20.00  20.00  272.6      275.1     254.3      267.3     8.6       9.5      5.2        5.0 2001    1     11   6.98    7.66      8.51      6.5  7.23  16.67  16.67      16.67    16.67  16.67                       269.9      293.6                        7.0        5.1 2001    1     12   7.04    6.67      6.95      5.6  7.21  16.67  16.67      16.67    16.67  16.67                       267.4      294.7                        8.6       4.3 2007   12      5   5.62    7.23      5.59     4.72  7.14  19.05  20.00      19.05    20.00  18.18  273.3      280.2     251.0      266.1     7.5       6.5      7.5       4.1 2004    2     26   7.16    6.75      7.65     5.94  7.13  16.67  20.00      2.0.00   18.18  18.18             2.59.3    264.2      2.87.0             39.3     13.7        6.0 2007    1      5   6.2.2. 6.66      6.92. 3.96  7.12. 17.39  16.67      17.39    18.18  16.67  299.3      311.0     264.8      305.5     9.4      13.5     11.7        8.8 2008    1      5   8.62    7.61      8.96     6.42  7.08  19.05  20.00      19.05    20.00  2.0.00 276.5      268.5     254.8      278.0    34.4      33.1     18.8       2.3.1 2.000  12     22. 6.21    5.2.8     7.91     6.05   6.4  2.0.00 2.0.00     20.00    2.0.00 2.0.00                      2.61.8     283.9                        6.7        7.8 1999    4      4   6.64    6.58      7.72. 3.66  6.57  12..50 14.29      14.2.9   15.38  15.38                       2.74.8     311.0                        5.5        3.4 1999    1     27   6.65    6.26        7.7    5.33  6.06  16.67  16.67      16.67    16.67  16.67                       2.69.8     302..1                       3.4        4.7 2001   12. 2.1  6.37     7.1      7.68     5.45  6.12  16.67  16.67      16.67    16.67  16.67                       264.5      287.2                        5.5        4.8 1998   12      9   6.52    6.84        7.5    4.15  4.83  20.00  20.00      20.00    20.00  18.18                       270.6      301.0                        6.9        5.8 1998   12      1   6.2.7   6.71      7.44     5.33  5.78  20.00  20.00      20.00    20.00  18.18                       264.3      289.4                        6.5        6.2 1999    1     26   4.22    3.73      7.31     4.37  4.07  16.67  16.67      16.67    16.67  16.67                       273.5      302.8                        4.0        6.1 2000   12     2.3  7.2.1   6.78      7.27     6.12  6.39  20.00  16.67      16.67    18.18  18.18                       266.1      288.3                        5.2.       3.4 2001    5      2   6.33    5.86      7.22     4.33  6.05  16.67  16.67      14.29    16.67  15.38                       272.4      305.5                        3.9        4.5 2009   11      8   5.35    6.68      7.19     3.42  6.37  19.05  20.00      17.39    18.18  18.18  317.5      317.5     265.3      307.5     7.2       6.3      4.9        3.4 1998   11     2.6  4.92. 5.67       7.09    4.36  4.87  20.00  2.0.00     2.0.00   18.18  18.18                       2.69.5     2.93.2.                      5.2        4.4 2009   11      7   5.51    6.06       7.03    3.93  6.93  19.05  20.00      19.05    20.00  2.0.00 314.2. 317.8     269.6      305.4     8.6       3.0      4.6        6.3 2008    5     22   5.98    6.02.        7      3.7  6.82. 12.12  12.50      12.90    13.33  13.33  318.3      316.0     277.3      315.1     4.6       3.6      3.9        4.1 2008    1      6   7.19    7.14       6.14     4.4  5.77  17.39  16.67      17.39    18.18  18.18  298.6      293.9     261.4      296.6     5.1       6.1      4.7        3.9 1999    2. 17   7.13     5.4       5.35    4.15  5.55  20.00  20.00      20.00    20.00  20.00                       2.69.1     291.8                        6.2        3.8 Wave Heights - meters Wave Direction - degrees

PG&E Letter DCL-16-016 Enclosure 1 Table 3-11       Estimated 200 Year Return Period Calibrated to DELFT3D Significant Wave Height 200 Yr RP NDBC                     Delft3D     Percent (Hsig)
Buoy                   (Hsig) [m] Difference
[m]
46028        11.407     11.5510    -1.26%
46215        7.9061     7.9058     0.00%
46011        11.049     11.0456    -1.37%
46023        11.306     11.2005    -0.43%
46218        11.042     11.3541    -0.03%
Table 3-12       Boundary and Physical Inputs Used in the DELFT3D Simulation
* Significant wave height, 11.2 m
* Peak wave period, 20 s
* Wave Direction, 270&deg; (westerly)
* Directional spreading, 4o
* Wind Velocity, 10 m/s
* Wind Direction, 270&deg; (westerly)
* Water Density, 1,025 kg/m 3
* Collins Bottom Friction Coefficient, 0.1118 (calibrated)

PG&E Letter DCL-16-016 Enclosure 1 Table 3-13        Maximum Amplitude of Far-Field Coseismic Tsunamis Recorded at Avilla Beach (AB) and Port San Luis (PSL) Tide Gauges Far-Field Coseismic Tsunamis (since 1946)                     Max. Ampl. (m)
No.       Date         Region/source       Lat. (deg.)  Lon. (deg.)   Dist. (km)   Mw    PSL       AB 1      4/1/1946       Alaska/Unimak         53.492      -162.832       3839       8.6    1.2 2    12/20/1946      Japan/E. Honshu           33          135.6       9039       8.1              0.1 3     11/4/1952       Kamchatka/Kuril       52.755       160.057       6289        9               1.4 4      3/9/1957            Alaska           51.292      -175.629       4668       8.6             0.53 5     11/6/1958       Kamchatka/Kuril        44.53        148.54       7411       8.3             0.14 6     5/22/1960      S. America/Chile        -39.5         -74.5       9565       9.6             0.99 7    10/13/1963       Kamchatka/Kuril        44.77       149.798       7310       8.5              0.3 8     3/28/1964            Alaska           61 .017     -147.648       3448       9.2              1.6 9    10/17/1966       S. America/Peru      -10.748       -78.638       6759       8.1              0.1 10     5/16/1968      Japan/E. Honshu          40.8         143.2       7994       8.2              0.1 11    11/29/1975            Hawaii           19.451      -155.033       3785       7.7   0.39 12     6/22/1977      S. Pac.!Tonga Tr.     -22.878        -175.9       8685       7.2   0.12 13     10/4/1994       Kamchatka/Kuril       43.773       147.321       7535       8.3   0.15 14     7/30/1995      S. America/Chile       -23.34       -70.294       8402        8    0.12 15     12/3/1995       Kamchatka/Kuril       44.663         149.3       7349       7.9   0.07 16     6/10/1996     Alaska/Andreanov        51.564      -177.632       4805       7.9   0.09 17    11/26/1999     S. PacificNanuatu      -16.423       168.214       9423       7.5   0.05 18     6/23/2001       S. America/Peru      -16.265       -73.641       7577       8.4   0.14 19     9/25/2003        Japan/Hokaido        41.815        143.91       7884       8.3   0.03 20    12/26/2004     Indonesia/Sumatra        3.316        95 .854      14286      9.1   0.27 21    11/15/2006       Kamchatka/Kuril       46.592       153.266       6979       8.3   0.56 22     1/13/2007       Kamchatka/Kuril       46.243       154.524       6906       8.1   0.11 23      4/1/2007    S. Pac./Solomon lsi.     -8.466       157.043       9851       8.1   0.09 24     8/15/2007       S. America/Peru      -13.386       -76.603       7127        8    0.08 25      1/3/2009         S. Pac./PNG         -0.414       132.885       11518      7.6   0.08 26     9/29/2009      S. Pac./Samoa Is.     -15.489      -172.095       7812        8    0.28 27     10/7/2009     S. Pac.Nanuatu Is.     -13.006        166.51       9329       7.6   0.08 28     2/27/2010      S. America/Chile      -36.122       -72.898       9350       8.8   0.80 29     3/11/2011        Japan/Honshu         38.297       142.372       8200        9    2.02 30    10/28/2012    Canada/Queen Ch.         52.788      -132.101       2153       7.7   0.27 31      2/6/2013    S. Pac./Solomon lsi.    -10.799       165.114       9295       7.9   0.14 32      4/1/2014      S. America/Chile      -19.642       -70.817       8056       8.2   0.22 Table 3-14        Maximum Amplitude of Near-Field Coseismic Tsunamis Far-Field Coseismic Tsunamis (since 1946)                     Max. Ampl. (m)
No.       Date         Region/source       Lat. (deg.)  Lon. (deg.)   Dist. (km)   Mw    PSL       AB 11/22/1878      San Luis Obispo                                            N/A*
33      11/4/1927     California/Lompoc         34.813       -120.774     40      7.3** 1.2***
34      4/25/1992   California/Humboldt         40.368       -124.316    657       7.2   0.07
* 11/22/1878 event was likely caused by a local submanne mass failure
** Original magnitude was Mw 7.0; increased magnitude was recommended by Eilsworth (2003)
*** Reported in literature. Tide gauge not yet installed .

PG&E Letter DCL-16-016 Enclosure 1 Table 3-15      Maximum Expected Magnitudes (Mw) Used in RPMT Simulations Sources                           MaxMw            References Far-Field        Alaska (ASZ)           9.2        Johnson et al. (1996) 9.2        lchinose et al. (2007) 9.2        Suito and Freimueller (2009)
Semidi (SSZ)           9.1        Ross et al. (2013), Whitmore et al.
(2013)
Kamchatka              9.2        Gonzalez et al. (2009)*
(KSZ)                             (Zone KSZ1)
                                ~                       Gonzalez et al. (2009)*
(Zone KSZ2)
Japan (JSZ)            9.1        Grilli et al. (2013a,b; Tappin et al., 2014)
Near-Field       Hosgri fault          7.66        Petersen et al. (2008), Wills et al. (2007)*
(HFS)
San Lucia             7.49        Petersen et al. (2008), Wills et al. (2007)*
fault (SLFS)
* Parameters rev1sed 1n present study Table 3-16      SMF Parameters Used in RPMT Simulations SMF proxy simulations                Goleta. SMF                Big Sur North In NHWAVE                            proxy                      SMF proxy Grid used for generation             Goleta 125                 Big Sur 500 Center of mass location              35.153 N -120.985          35.097 N -121.904 (Xo, Yo)                             w                          w Width w (km)                          10.5                       10 Length b (km)                        7.45                       15 Thickness T (m)                      75                         235 Depth d (m) at center of             300 (1 00-400)             2600 mass Mean slope ~ of                      2                          4 failure surface (deg)
Azimuth 8 of SMF                     245                        255 movement (deg. true N)
Initial acceleration ao (m/s 2 )     0.14                       0.26 Maximum velocity Umax(m/s)           25.0                       51.9 Motion duration tr (s)               559.0                      635.4 Motion run out sr (km)               8.88                       21.04

PG&E Letter DCL-16-016 Enclosure 1 Table 3-17       Summary of RPMT Runup and Drawdown Results Far-Field (Distant)          Near-Field (Local)                                     Goleta Proxy SMF Tsunami with Seismic Tsunami              Seismic Tsunami          Goleta Proxy SMF Tsunami          Reduced Breakwater Evaluation (no CLB)
Reevaluation                  Reevaluation CLB                         CLB                            CLB       Reevaluation (SSZ)                         (HFS)
Max. Water Elevation in the Area of the Intake Structure     30.3 ft.      17.4 ft.(S)    34.9 ft.        1.3 ft. (S)      N/A         27.9 ft.( 4)               32.8 ft.
(HHWL)
Max. Runup Elevation Behind Intake Structurel 3 l        N/A           N/A           N/A             N/A            N/A          32.8 ft.                  62.3 ft.
(HHWL)
Combinedl 2l Drawdown
                                  -8.7 ft.      -9.2 ft.      -3.8 ft.          N/A         -8.7 ft.(G)    -15.7 ft.                 -15.7 ft.
Elevation Splash                              N/A          N/Al 1 l    60.32 ft.         N/Al 1l         N/A           N/Al 1 l                  N/A{ll             I All elevations are in NAVD88.
: 1. RPMT did not result in any splash due to the longer period waves that are seen in the model.
: 2. The CLB included effects from tsunami, storm waves, storm surge, and tide. Combinations stipulated in NUREG/CR-7046 do not combine the effects from tsunami, storm waves, storm surge, & tide. The RPMT combination includes tsunami, tide, and long-term sea level rise. See Section 3.9.
: 3. In cases where the water level is high enough to continue over the intake structure, the maximum elevation that is reached up the steep hill behind the intake structure is provided.
: 4. The HAWL value is reported because it is more limiting than the HHWL.
: 5. Water levels shown are in the front of the intake structure since levels were not high enough to flow over the top deck of the structure (i.e., less that elevation 20.4 ft. NAVD88 [17.5 ft. MSL]).
: 6. Even though there is no CLB for the Goleta Proxy SMF, it is compared to -8.7 ft. since this is the most-limiting CLB drawdown value.

PG&E Letter DCL-16-016 Enclosure 1 Table 3-18   Maximum Water Current Velocities and Impulse Forces for RPMTs Safety-Related SSC                    Water Velocity        Water Impulse Force ASW Ventilation Huts I 26.2 ft/s               0.86 kip/ft ASW Ventilation Snorkels Intake Structure Curtain Wall             18.0 ft/s                11.3 kip/ft ASW Forebay Ceiling                       18.0 ft/s               20.4 kip/ft        I Intake Structure Top Deck                 39.4 ftls                11.6 kip/ft
* The velocity and impulse force for the ASW ventilation snorkels are zero because they are not inundated by the RPMTs.

PG&E Letter DCL-16-016 Enclosure 1 Table 3-19     Potential Tsunami Debris
    #    Commodity                                            Weight Class       Material Type 1    Bar Racks                                                    3              Steel 2    Aux Salt Water Pump Screen Gate                              5              Steel 3    Screen Wash Pumps                                            5              Steel Traveling Screen Housing or Internal Parts (Outer 4                                                             2, 3, 4            Steel covers are fiberglass) 5    Control/office building                               1, 2, 3, 4,5     Masonry Concrete Masonry Intake Access Control & Security building cement 6                                                          1, 2, 3, 4, 5    Concrete, Wood, blocks, roofing material, interior commodities Steel Masonry Maintenance Machine Shop Building cement 7                                                          1, 2, 3, 4, 5    Concrete, Wood, blocks, roofing material, interior commodities Steel 8    Maintenance and Storage Sea Trains                   1, 2, 3, 4, 5, 6       Steel 9    Chlorination Tanks                                       4, 5, 6            Plastic 10    Security Fences and Gratings                             2, 3, 4            Steel 11    Security Guard Towers                                      5, 6          Wood, Steel 12    PVC Piping for Biolab (located on hillside)                  2              Plastic 13    Lighting/camera posts (permanently mounted)                  3              Steel Reinforced 14    Lighting stanchions (with concrete base)                     4 Concrete, Steel 15    Portable powered lighting carts                              4              Steel 16    Gantry Crane                                                 6              Steel 17    Movable Crane                                                6              Steel 18    Chemical Storage Tank                                    4, 5, 6            Plastic 19    Chemical Transferring Station                                5           Steel, Plastic 20    Moored Intake Cove Boats                                     5           Steel, Wood 21    Kelp Cutter Boat and Trailer                                 6              Steel 22    Intake Cove Docks                                       2, 3,4, 5           Wood Maintenance and operations vehicles (pickup 23                                                                15               Steel trucks) 24    Smaller (golf cart' vehicles for personnel transport         4              Steel 25    Employee and visitor personal vehicles                       5              Steel Reinforced 26    Spare Tribars for breakwater construction                    6 Concrete 27    Lumber/cribbing                                              1              Wood 28    Meteorologist/Shower/Offices- Building 123           1, 2, 3, 4, 5, 6       Wood 29    Lumber fence located near Building 123                       2              Wood 30    Lumber used as retaining walls.                              1              Wood Concrete block used as retaining walls directly to 31                                                                 1         Masonry Concrete east of intake protected area

PG&E Letter DCL-16-016 Enclosure 1
  #   Commodity                                        Weight Class       Material Type 32    'Porta Potties'                                        2                Plastic 33    Metal storage bins/dumpsters                          2, 3              Steel 34    Plastic storage bins                                   2                Plastic 2
35   Compressed air/welding/C0 cylinders                     1                Steel Portable commodities associated with plant operation and maintenance including 36                                                    1, 2, 3, 4, 5, 6    Steel, Wood commodities temporarily stored/staged for maintenance activities Machine shop tools (metal-working floor mounted 37                                                          4, 5              Steel tools)
Manmade and Natural items found in the 38                                                       1, 2, 3,4      Soil, Sand, Rock landscape of areas expected to be inundated 39    Navigation buoys                                       2                Plastic Reinforced 40   Concrete wheel chocks (for vehicle parking)             2 Concrete 41   Eyewash Station                                         2                Plastic 42   Ladders                                                 1                Steel 43   Sandbags                                                1          Soil, Sand, Rock 44   BBQs                                                    1                Steel 45   Yellow Flotation Devices                                1                Plastic 46   Small temporary building                                3                Steel Weight Classes are as follows:
1 < 100 lbs.
2 > 100 lbs. and < 500 lbs.
3 > 500 lbs. and < 1,000 lbs.
4 > 1,000 lbs. and < 2,000 lbs.
5 > 2,000 lbs. and < 10,000 lbs.
6 > 10,000 lbs.

PG&E Letter DCL-16-016 Enclosure 1 Table 3-20        Tsunami Debris Projectile Impact, Debris Damming, and Combined Forces Civil Commodity                Limiting RPMT              Limiting CLB                  Bounded/
Projectile Force         Tornado-Generated              Not Bounded Missile Force Intake Structure Curtain             4,188 kips                 44,206 kips                  Bounded Wall Intake Structure Top                 231.9 kips                 44,206 kips                  Bounded Deck ASW Fore bay Ceiling 1                    N/A                        N/A                         N/A ASW Ventilation Huts                  224.3 kips                 44,206 kips                  Bounded ASW Ventilation                           N/A                        N/A                         N/A Snorkels 2
: 1. The ASW forebay ceiling is an interior structural commodity. The ASW pump forebay draws seawater that enters under the curtain wall. As the height of the incoming wave exceeds the height of the bottom of the curtain wall (elevation -4.9 ft. NAVD88), floating projectiles would be excluded from entry to the ASW forebay. Projectiles in the flowstream for the tsunami at an elevation under the bottom of the curtain wall could enter the ASW forebay, but will not strike the forebay ceiling, located at elevation -0.7 ft. NAVD88, 4.2 feet above the bottom of the curtain wall, as they are not expected to have a velocity component after the forebay area is re-flooded after drawdown .
Therefore, projectile impact to the forebay ceiling is not considered a credible event.
: 2. The ASW ventilation snorkels are not inundated by the RPMT. The maximum inundation height at the ASW ventilation huts is 5.8 feet. The height of the ASW ventilation huts is 14.5 feet from the intake structure top deck. Therefore, a floating projectile (such as the kelp harvesting vessel) that has a profile above the maximum inundation height is insufficient height to impact the ASW ventilation snorkels.

PG&E Letter DCL-16-016 Enclosure 1 BASE  MAP FROM THE PORT SAN LUIS, CA (2012) USGS QUADRANGLE MAP.
0 :500' 1000' 2000' PROVIDED BY WWW.USGSSTORE.GOV. CONTOUR ELEVA110NS REFERENCE NAVD 88, CONTOURS ARE SHOWN IN FEET AT 40 FOOT INTERVALS.
Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 2-1 DCPP Site Location

PG&E Letter DCL-16-016 Enclosure 1 o.5 o:25 o   0.5 Mires 11::111::11-*
Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 2-2 Diablo Creek Watershed

PG&E Letter DCL-16-016 Enclosure 1 J<I' N
                                                                                         )5'N
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        +
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IJilt<r m Nrut h ~rc.an 1933 0          50 100 150 Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 3-1 Locations of Storms Used in LIP Determination

PG&E Letter DCL-16-016 Enclosure 1 Sn!JIIi R-Wrif,S JL )WH.' Ci
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Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 3-2a Locations of Doors, Safety and Non Safety-Related Structures, and Areas to the West of the Turbine and Buttress Buildings Evaluated for LIP

PG&E Letter DCL-16-016 Enclosure 1 I
I I
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-- ----                                                                                                                                                                 ;1-----------0 I
TURBINE       B L D G.
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                                                                                ~m1~                                                                                     !
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* o*~*""'~         P"mp  v'"'"  J   T'"'A<<= ""'" ""'        L~** Mooilorn   @I Door BU103-2 Door BU104-2 Dooc BU 10~2           @
-       DFO Transfer Piping Vaults  -    Doors    E:::::J Roll-Up Doors
* Diesel Fuel Oil Tank Vents Note: Doors BU104 and BU105 are located next to each other.
Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 3-2b Location and Identification of Commodities on the West of the Turbine Building

PG&E Letter DCL-16-016 Enclosure 1 Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 3-3 Maximum Water Depth from LIP (ft.)

PG&E Letter DCL-16-016 Enclosure 1 Diablo Creek General Storm AII-Seaon PMP 35
           .                                                                                                              -~
30 -
*-c
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           .                                                                      ~~             ----------
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0     6     12          18     24        3"0        36          42    48       54        60            66            72 Time (hours)
Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 3-4 Diablo Creek General Storm All-Season Cumulative PMP Values

PG&E Letter DCL-16-016 Enclosure 1 Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 3-5 DCPP Site Locations of PMF Inundation

PG&E Letter DCL-16-016 Enclosure 1
             ~ PMF Lirrit
             -   Retaining WaD
     -+  +
             - - FetchUne Diablo Creek Cross Sections
-+      ....               -                 +
   +                  +          +

PG&E Letter DCL-16-016 Enclosure 1 076 DIABLO CANYON, CA (6UOY)
AUGUST 1997
     ~Wu:r~~~:~
: 1.                      15                    1.:1.                     :1.15                   21.                       26                       3:1.
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Day of Month (UTC)
H:t p:l/o:l ip . u::sd .edul Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 3-7 Tropical Storm Ignacio and Resulting Significant Wave Heights at the DCPP Waverider Buoy(August20, 1997)

PG&E Letter DCL-16-016 Enclosure 1 Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 3-8 Locations of Analyzed NDBC Buoys Along the California Central Coast

PG&E Letter DCL-16-016 Enclosure 1 l-2 l l 0
~
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6                                                                      --- 46028
                                                                                 ***- 46215
                                                                               - - 46218 5
0 20 0         60       80             100               120       40         160        180          200 Return Period [Yea r Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 3-9 Return Periods for Significant Wave Heights at Analyzed NDBC Buoys Along the California Central Coast

PG&E Letter DCL-16-016 Enclosure 1 Bathyme:try : Central Coast - Datu1m : NiA.VD88 3.8982 3.8981 3.8981 3:8981                                                                                                  10 3.898 o:
3 .8979 3.8979                                                                                                -10 3.8979
                                                                                                       -20, 3.8978 3.8977
                                                                                                       -30 !
6.948 6.949 6.95 6 .951           6.952                    6 .953              6.954    )( 1 0~
Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 3-10 Maximum Crest Wave Level (m) at Various Observation Points at the DCPP Breakwaters (with SAWL)

PG&E Letter DCL-16-016 Enclosure 1 60 55 50 C'l
~ 45 z
~   40 35 30 25
    -220        -210        -200       -190        -180        -170          -160 -150      -140        -130           -120 Lon. E. (Deg.)
Acronyms: Alaska Subduction Zone (ASZ), Semidi Subduction Zone (SSZ), Kamchatka Subduction Zone (KSZ), Japan Subduction Zone (JSZ) .
Color scale denotes bathymetry (<0) and topography (> 0) in meter.
Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 3-11 Location of Various Tsunami Source Areas for DCPP

PG&E Letter DCL-16-016 Enclosure 1 o*o*N 36
                                                                             ~
                                                                                ")~;'~
                                                                                     ~~
                                                                                       ~
35 Explanation 0    Diablo Canyon Power Plant (DCPP) 1   Continental Shelf 2   Upper Continental Slope J   Lower Continental Slope 4   Upper Continental Rise PA Point Arguello                  PS Point Sal PB Point B~.Chon                   PSRPoint Sur PC Point Conception                SMI San Miguel Island PE Point Estero                    SRI Santa Rosa Island PPB Point Piedras Blancas          SCrl Santa Cruz Island 0    10   JJJ        QJ Kobmete r&
I I   I I  I  I I I   I 123' 0'0 W                     122' 0 '0W Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 3-12 Physiographic Features in the DCPP Area

PG&E Letter DCL-16-016 Enclosure 1 I
:       I
    +               -h
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    +        +                     + T I
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CF - c asmalia ra!Jt zone E q:danati on                               HF- Hosgn fau lt tone 0 Diablo Canyon Pmver Pla nt (DCPP)            PS - Purisima structure SLBF- s, ta LUc. a Banks fault zone
- - Fa ult SLBF- Santa Lucia Banl<s fault zone- south
- - Rupture scen ari o                            SCF- SoLthv*Jest t . r.amel fau lt WBF - West Basin fault 0                JO I ilom eters Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 3-13 Fault Zones Used in the RPMT Modeling

PG&E Letter DCL-16-016 Enclosure 1 0
120&deg;00'   119, 30' n
CALIFORNIA CSlJ a
From Greene et al. (2006)
Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 3-14 Location of Goleta and Gaviota Slides

PG&E Letter DCL-16-016 Enclosure 1 Ex planation                       Notes :
                                       *1) Modified fmm G utmacl1er and Norm ark ( 1993 ).
** ~ ** Major fan valley               2) Offsl1ore base map dfrom NCOC/NCAA Coastal Relief MFV Monterey fan valley           OEM (NOGC, 2005) .
AFV Ascension fan valley      3) Onshore base map from U.S.G .S. 90-meter OEM .
MEFV Monterey East fan valley Headwall scarp of Sur Slide 0           50             100 Kilometers DCPP Diablo Canyon Power Plant                  I            I               I Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 3-15 Location of Sur Slide

PG&E Letter DCL-16-016 Enclosure 1 122"30'W        122"W     121"30'W        121"'ifll'     120"30'W StvlSB- Santa Maria Slope Break zone SSB- Sur St1elf Break zone                          Explanati on ACZ- Arguello-Conception zone SLBS -Santa Lucia Bank scarp zone              DCPP Diablo Canyon Power Plant LSC - Lower Slope Canyon zone SS L- Southern Santa Lucia Basin zone          D    Landslide source zones ENSZ - Escarpment-no rthem Sur zone ENZ- Escarpment-northern zone ECZ- Escarpment-central zone ESZ- Escarpment-southern zone 0              40            80 Ki lometers I               I              I Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 3-16 Landslide Source Zones Used in Previous Tsunami Analyses

PG&E Letter DCL-16-016 Enclosure 1 0
35.25
                                                                                            -100 35.2
                                                                                            -200
~35.15 0                                                                                         -300 z
  ~      35.1
-=~
"'C
~ 35.05
                                                                                            -400
*.;:                                                                                        -500
~          35
                                                                                            -600 34.95
                                                                                            -700
                                                                                            -800 121.2        121.1         121         120.9         120.8 Longitude (deg. West)
The black ellipse is thew =1 0.5 km by b = 7.45 km footprint of a 1.75 km3 slide on the slope, with center of mass located at 35.153N-120.985W. The black straight line is a transect in the direction of the steepest slope from DCPP in azimuth 8 = 245 deg. from North.
Bathymetry is color scale in meters.
Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 3-17 Goleta SMF Proxy Location and Bathymetry

PG&E Letter DCL-16-016 Enclosure 1 0
35.6
                                                                                            -500
                                                                                            -1000 35.4
-.....=
  ~ 35.2
                                                                                            -1500 z                                                                                           -2000 oil Q.)
"'0 Q.)     35
"'0                                                                                         -2500
  =
  ~
~                                                                                           -3000 34.8
                                                                                            -3500 34.6
                                                                                            -4000 34.4                                                                                -4500 122.6      122.4     122.2     122      121.8     121.6    121.4 Longitude (deg. West)
Black ellipses are thew= 10 km by b = 15 km footprint of 4.5 (or 10.5) km3 slides on the slope, with center of mass located at 35.097N-121.904W and 34.993N-121.872W, respectively. The black straight lines are transects in the direction of the steepest slope in azimuths 8 = 255 and 290 deg. from North, respectively. Bathymetry is color scale in meters.
Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 3-18 Big Sur SMF Proxy Location and Bathymetry

PG&E Letter DCL-16-016 Enclosure 1 El. 52.3 ft ---......,..,~--           Snorkels EI. 48.5 ft Intake Top Deck ~                            El. 34.9 ft                  ~ ASW Huts Ate
                    ~~
El. 20.4 ft Bar rack                ASW pump room curtain Wall ~
Forebay Forebay Ceiling                     El. -o.7 It El. -4.9 ft ---~
ASW Forebay El. -28.6 ft ---...-----~
I
     +-W Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 3-19 Elevation Profile of SSCs of Intake Structure (NAVD88)

PG&E Letter DCL-16-016 Enclosure 1 ASW Huts 1.1 ksf 1.3 ksf Intake Top Deck Forebay Ceiling 2.5 ksf --                                        0.8 ksf Curtain Wall
                                                   ~w Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 3-20 RPMT Hydrodynamic &
Hydrostatic Forces on the Intake Structure

PG&E Letter DCL-16-016 Enclosure 2 Page 1 of 5 Table of Changes to Diablo Canyon Power Plant Units 1 and 2 Flood Hazard Reevaluation Report Sections, Tables, and Figures Section,    Flooding Hazards Reanalysis Report,     Flooding Hazards Reanalysis Report, Reason for Change Table, Figure                  Revision 0                             Revision 1 Section 1.5    This section provides clarifications on A paragraph was added to describe use   Provides clarification on use of terminology used in the report.         of the terms current design basis (COB) terminology.
and current licensing basis (CLB) throughout the report.
A paragraph was added to describe use of the terms Pacific Gas and Electric (PG&E) Design Class I and safety-related throughout the report.
Sections       Define acronyms for Updated Final       Deleted acronyms definitions.           Editorial changes made 2.3.2, 2.3.2.1 Safety Analysis Report (UFSAR) and                                              because acronyms were current licensing basis.                                                        defined in newly added paragraph in Section 1.5.
Sections 2.2,  These sections referenced UFSAR         These sections were updated to          Reflects the most current 2.3.2.1,       Revision 21.                            reference UFSAR Revision 22.            UFSAR.
2.3.2.2, 2.3.2.3, 2.3.2.4, 2.3.2.5, 2.3.2.6.1, 2.3.2.6.2, 2.3.2.7, 2.3.2.8, 2.3.2. 12, 2.3.2. 13,                                                                                                                      I 2.3.2. 14, 2.3.3 3.3

PG&E Letter DCL-16-016 Enclosure 2 Page 2 of 5 Section,    Flooding Hazards Reanalysis Report,      Flooding Hazards Reanalysis Report, Reason for Change Table, Figure                  Revision 0                               Revision 1 Sections      These sections made reference to         Replaced the term safety-related with       Revised to be consistent with 2.3.2.1,      safety-related buildings or components   PG&E Design Class I.                        the terminology used in 2.3.2.2,                                                                                           UFSAR Revision 22.
2:3.2.11, 2.3.2.13, 2.3.3 Section 3.1.2 This section provided the cumulative     A sentence was added to address             Reflects more conservative depth of the 1-hour and 6-hour Ll P of   additional methods used in performing       assumptions used in the 4.5 and 5.9 inches, respectively.        the revised LIP modeling: FL0-20            revised LIP modeling.
models (locations and elevations) of the buildings and features were verified by     Editorial change made to site walkdowns.                             clarify that the values provided represent rainfall amount.
The cumulative depth was revised to clarify that the cumulative rainfall amount of the 1-hour and 6-hour LIP was 4.5 and 5.9 inches, respectively.
Section 3.1.3 This section presented the LIP           This section was revised to presentthe      Reflects revised Ll P modeling reevaluation results. Six topics and     updated LIP reevaluation results. Six       results.
their associated results were presented: topics and their associated results are (1) Frequency analysis results showed    presented:
the 90 percent confidence interval   (1) Frequency analysis results showed for 106 years return period varied       the 90 percent confidence interval between 3.62 and 2.86 inches.            for 106 years return period varied between 3.60 and 2.84 inches.
(2) Water depth above the door thresholds and areas to the west of  (2) Water depth above the door the turbine and buttress buildings       thresholds and areas to the west of varied between 0.09 ft. and 1.4 ft.,     the turbine and buttress buildings with five of the doors/areas showing     varied between 0. 05 ft. and 0. 68 ft.,
no inundation.                           with six of the doors/areas showing no inundation.

PG&E Letter DCL-16-016 Enclosure 2 Page 3 of 5 Section,    Flooding Hazards Reanalysis Report,         Flooding Hazards Reanalysis Report, Reason for Change Table, Figure                   Revision 0                                 Revision 1 (3) The duration of time dependent         (3) The duration of time dependent water depths varied between 0.00           water depths varied between 0.00 hours and 4.41 hours.                      hours and 7.60 hours.
I (4) Area A3 includes commodities           (4) Area A3 includes commodities related to the safety-related diesel       related to the safety-related diesel fuel oil transfer system. Area A3          fuel oil transfer system. Area A3 showed a water depth value of 0.13         showed a maximum water depth ft.                                        value of 0.21 ft.
(5) Maximum velocity values are less       (5) Maximum velocity values are less than 1 ft/sec for all but two              than 1 ft/sec for all commodities.
commodities listed on Table 3-5.
Area B 1 shows a maximum velocity      (6) The total associated effect is the of 1.16 ft/sec, however, this area is      force (per linear foot of surface) due proximate to the Unit 2 diesel             to hydrostatic and hydrodynamic generator air intake louvers, which        loading of the Ll P varied from 1 lb/ft.
are recessed and located behind a          to 35 lb/ft. for doors and areas security fence. Debris ingress to the      experiencing inundation.
louvers is not credible. Door 191-2 shows a maximum velocity of 1.02 ft/sec, sufficiently close to the 1 ft/sec threshold so as to safely                                                                                    I assume that debris loading will not be an issue for this door.
(6) The total associated effect is the force (per linear foot of surface) due to hydrostatic and hydrodynamic loading of the LIP varied from 0.03 lb/ft. to 21.51 lb/ft.
Section 4.1   This section compared current LIP          This section was revised to reflect the      Reflects revised LIP modeling   I results with reanalyzed Ll P results. The  updated reevaluated LIP water depth          results.

PG&E Letter OCL-16-016 Enclosure 2 Page 4 of 5 Section,    Flooding Hazards Reanalysis Report,       Flooding Hazards Reanalysis Report, Reason for Change Table, Figure                   Revision 0                                Revision 1 reevaluated LIP determined that the      above the door thresholds and areas to water depth above the door thresholds    the west of the turbine and buttress and areas to the west of the turbine and buildings, which varies between 0.05 ft.
buttress buildings varied between 0.09   and 0.68 ft., with six of the 46 ft. and 1.4 ft., with five of the 29     doors/areas showing no inundation, and doors/areas showing no inundation.       the duration of time dependent water The duration of time dependent water     depths, which varies between 0.00                                           I depths varied between 0.00 hours and     hours and 7.60 hours.
4.41 hours.                              The conclusion that the reevaluated LIP is not bounded by the current analysis                                      I I
did not change.
Section 4.5   This section made a comparison to the    This section was revised to clarify that  Aligns with the newly added COB.                                     the comparison is being made to the       clarification in Section 1.5.
COB/CLB.
Section 4.6   This section made a comparison to the    This section *was revised to clarify that Aligns with the newly added COB.                                     the comparison is being made to the       clarification in Section 1.5.
COB/CLB .
Section 7.0   This section contained a reference to    Reference PGE, 2013 was deleted and       Reflects the most current UFSAR Revision 21 as PGE, 2013.          a reference to UFSAR Revision 22 as       UFSAR.
PGE, 2015 was added .
Table 3-5     Table provided maximum water depth       Table numerical values were revised.      Reflects revised LIP modeling and flood duration for doors and area to Water depths range from 0.05 ft. - 0.68   results .
the West of the turbine building and     ft., with six doors showing no buttress buildings. Water depths
* inundation. The duration of time ranged from 0.09 ft.- 1.4 ft., with five dependent water depths vary between doors showing no inundation. The         0.00 hours and 7.60 hours.
duration of time dependent water depths varied between 0.00 hours and 4.41 hours.
Table 3-6     Table provided hydrodynamic and total    Table numerical values were revised.      Reflects revised LIP modeling associated affects resulting from a LIP  For doors and areas experiencing          results .
event. The total force ranged from 0.03  inundation, the total force ranges from 1 Ib./ft. - 21 .51 Ib./ft.                 lb./ft. - 35 lb./ft.

PG&E Letter DCL-16-016 Enclosure 2 Page 5 of 5 Section,   Flooding Hazards Reanalysis Report,      Flooding Hazards Reanalysis Report, Reason for Change Table, Figure                 Revision 0                               Revision 1 Table 3-7     Table included fitted precipitation      Table was revised to include fitted        Reflects revised Ll P results estimates and 90 percent confidence      precipitation estimates and 90 percent     and removes extraneous interval (CI) for return periods 2 years Cl for the 1 million year return period. return period information not through 1 million years. For a 1 million For a 1 million year return period, the 90 required to make a comparison year return period, the 90 percent Cl    percent Cl ranged from 2.84 inches to      to the National Research ranged from 2.86 inches to 3.62 inches   3.60 inches of precipitation.              Council values.
of precipitation.
Figure 3-2    Included figure                          Figure was replaced with Figure 3-2a.      Provides better understanding Detail in figure was increased to more     of LIP inundation results.
clearly show locations of doors, safety and nonsafety-related structures, and areas to the west of the turbine and buttress buildings evaluated for LIP.
Figure 3-2b   Figure new to Flooding Hazards           Figure was added to more clearly show      Provides better understanding Reanalysis Report, Revision 1            areas and commodities on the West          of LIP inundation results.
side of the turbine building.
Figure 3-3    Included figure                          Figure was replaced to reflect revised     Reflects revised Ll P modeling water depths near the power block          results.
structures.

PG&E Letter DCL-16-016 Enclosure 1 NEI, 2012. Nuclear Energy Institute (NEI), "Submittal of NEI 12-07, Revision 0, Guidelines for Performing Verification Walkdowns of Plant Flood Protection Features," May 2, 2012.
NEI, 2013. Nuclear Energy Institute (NEI), "FAQ-031, Hazard Reev.aluation Report (HRR)-
Interim Action Responses," Revision 1, October 29, 2013.
NEI, 2014. Nuclear Energy Institute (NEI), "FAQ-033, Hazard Reevaluation Report (HRR)-
Options for Interim Actions for Challenging HRRs," Revision 1b, August 21, 2014.
NOAA, 1998. National Oceanic and Atmospheric Administration, National Weather Service (NOAA). "Hydrometeorological Report No. 58, Probable Maximum Precipitation for California -
Calculation Procedures," Silver Spring, Maryland, 1998.
NOAA, 1999. National Oceanic and Atmospheric Administration, National Weather Service (NOAA). "Hydrometeorological Report No. 58, Probable Maximum Precipitation for California,"
Silver Spring, Maryland, 1999.
NOAA, 2012. National Oceanic and Atmospheric Administration, National Weather Service (NOAA). "NOAA Atlas 14, Precipitation-Frequency Atlas of the United States, Volume 6, Version 2," 2012, Website http://hdsc.nws.noaa.gov/hdsc/pfds/pfds_map_cont.html?bkmrk=ca data accessed February 28, 2013.
NOAA, 2013a. NOAA, National Oceanic and Atmospheric Administration, National Weather Service (NOAA). "Station Snow Climatology, Stations in California," Snow Climatology Data, National Climatology Data Center (NCDC), Website http://www.ncdc.noaa.gov/ussc/index.jsp accessed February 25, 2013.
NOAA, 2013b. National Oceanic and Atmospheric Administration, National Weather Service (NOAA). "Global Historical Climatology Network- Daily Data," Snow Climatology Data, National Climatology Data Center (NCDC), Website http://www.ncdc.noaa.gov/most-popular-data#ghcn accessed February 27, 2013.
NOAA, 2014. National Oceanic and Atmospheric Administration, National Weather Service (NOAA). "Global Historical Tsunami Database". Website http://www.ngdc.noaa.gov/hazard/tsu_db.shtml accessed July 9, 2014.
NRC, 1975. U.S. Nuclear Regulatory Commission (NRC), "Supplement No. 1 to the Safety Evaluation Report by the Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission in the Matter of Pacific Gas and Electric Company Diablo Canyon Nuclear Power Station, Units 1 and 2 Docket Nos. 50-275 and 50-323," Washington, D.C., January 31, 1975.
NRC, 1976a. U.S. Nuclear Regulatory Commission (NRC), "Regulatory Guide 1.102 - Flood Protection for Nuclear Power Plants", Revision 1, September 1976.
NRC, 197Gb. U.S. Nuclear Regulatory Commission (NRC), "Supplement No.5 to the Safety Evaluation Report by the Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission in the Matter of Pacific Gas and Electric Company Diablo Canyon Nuclear Power 7-3

PG&E Letter DCL-16-016 Enclosure 1 Station, Units 1 and 2 Docket Nos. 50-275 and 50-323," Washington, D. C., September 10, 1976.
NRC, 1977. United States Nuclear Regulatory Commission (NRC), "Design Basis Floods for Nuclear Power Plants," Regulatory Guide 1.59, Revision 2, Washington, D. C., August 1977.
NRC, 1978a. United States Nuclear Regulatory Commission (NRC), "Standard Format and Content of Safety Analysis Reports for Nuclear Power Plants," Regulatory Guide 1.70, Revision 3, Washington, D.C., 1978.
NRC, 1978b. United States Nuclear Regulatory Commission (NRC), " Supplement No. 8 to the Safety Evaluation Report for Pacific Gas and Electric Company Diablo Canyon Nuclear Power Plants, Units 1 and 2 (Docket Nos. 50-275 and 50-323)," Washington, D.C., November 15, 1978.
NRC, 1984. United States Nuclear Regulatory Commission (NRC)," Supplement 17 to the Safety Evaluation Report for Pacific Gas and Electric Company's Application for licenses to operate Diablo Canyon Nuclear Power Plants, Units 1 and 2 (Docket Nos. 50-275 and 50-323),"
Washington, D.C., February 1984.
NRC, 1999. United States Nuclear Regulatory Commission (NRC), "Issuance of Amendments for Diablo Canyon Nuclear Power Plant, Unit No. 1 (TAC No. M97914) and Unit No.2 (TAC No.
M97915)," Washington, D.C., March 26, 1999.
NRC, 2007. United States Nuclear Regulatory Commission (NRC), "Standard Review Plan for the Review of Safety Analysis Reports for Nuclear Power Plants: LWR Edition," NUREG-0800, Washington, D.C., March, 2007.
NRC, 2009. United States Nuclear Regulatory Commission (NRC), "Tsunami Hazard Assessment at Nuclear Power Plant Sites in the United States of America - Final Report,"
NUREG/CR-6966, PNNL-17397, Richland, WA, March 2009.
NRC, 2011. United States Nuclear Regulatory Commission (NRC), "Design-Basis Flood Estimation for Site Characterization at Nuclear Power Plants in the United States of America,"
NUREG/CR-7046, Washington, D.C., November, 2011.
NRC, 2012a. United States Nuclear Regulatory Commission, Letter to Licensees, "Request for Information Pursuant to Title 10 of the Code of Federal Regulations 50.54(f) Regarding Recommendations 2.1, 2.3, and 9.3 of the Near Term Task Force Review of Insights from the Fukushima Dai-ichi Accident." March 12, 2012.
NRC, 2012b . .United States Nuclear Regulatory Commission (NRC), "Endorsement of Nuclear Energy Institute (NEI) 12-07, 'Guidelines for Performing Verification Walkdowns of Plant Flood Protection Features,"' May 31,2012.             \
7-4

PG&E Letter DCL-16-016 Enclosure 1 NRC, 2012c. United States Nuclear Regulatory Commission (NRC), "Guidance for Performing the Integrated Assessment for External Flooding," Interim Staff Guidance, Revision 0. JLD-ISG-2012-05, November 30, 2012.
NRC, 2013. United States Nuclear Regulatory Commission (NRC), "Guidance for Performing a Tsunami, Surge and Seiche Flooding Safety Analysis Revision 0," Japan Lessons-Learned Project Directorate Interim Staff Guidance, JLD-ISG-2012-06, January 4, 2013.
NRC, 2014. United States Nuclear Regulatory Commission (NRC), "Diablo Canyon Power
\ Plant- Staff Assessment of the Flooding Walkdown Report Supporting Implementation of Near-Term Task Force Recommendation 2.3 Related tot he Fukushima Dai-lchi Nuclear Power Plant Accident (TAC Nos. MF0221 and MF0222)," ADAMS Accession No. ML14136A194, June 23, 2014.
NRC, 1994. National Research Council (NRC), "Estimating Bounds on Extreme Precipitation Events," National Academy Press, Washington, 1994.
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Bull. Seismological Soc. Amer., 75(4), 1135-1154. 1985.
Petersen et al, 2008. Petersen, M. D., Frankel, A. D., Harmsen, S.C., Mueller, C. S., Haller, K.
M., Wheeler, R. L., Wesson, R. L., Zeng, Y., Boyd, 0. S., Perkins, D. M., Luco, N., Field, E. H.,
Wills, C. J., and Rukstales, K. S. "Documentation for the 2008 Update of the United States National Seismic Hazard Maps." U.S. Geological Survey Open-File Report 2008-1128, 61.
2008.
PGE, 2012a. PG&E Letter DCL-12-059, "Pacific Gas and Electric Company's Response to NRC Request for Information Pursuant to 10 CFR 50.54(f) Regarding the Flooding Aspects of Recommendations 2.1 and 2.3 of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident," June 7, 2012.
PGE, 2012b. PG&E Letter DCL-12-114, "Final Response to Request for Information Pursuant to 10 CFR 50.54(f) Regarding Recommendation 2.3 Flooding," November 27, 2012.
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7-5

PG&E Letter DCL-16-016 Enclosure 1 Ross et al, 2013. Ross, S.L., Jones, L.M., Miller, Kevin, P., K.A., Wein, A., Wilson, Ri.l.,
Bahng, B., Barberopoulou, A., Borrero, J.C., Brosnan, D.M., Bwarie, J.T., Geist, E.L., Johnson, L.A., Kirby, S.H., Knight, W.R., Long, K., Lynett, P., Mortensen, C.E., Nicolsky, D.J., Perry, S.C.,
Plumlee, G.S., Real, C.R., Ryan, K., Suleimani, E., Thio, H., Titov, V.V., Whitmore, P.M. and Wood, N.J., SAFRR (Science Application for Risk Reduction) Tsunami Scenario-Executive Summary and

== Introduction:==
U.S. Geological Survey Open-File Report 2013-1170-A, in Ross, S.L., and Jones, L.M., eds., The SAFRR (Science Application for Risk Reduction) Tsunami Scenario: U.S. Geological Survey Open-File Report 2013-1170, 17 p., 2013.
http:l/pubs.usgs.gov/of/2013/1170/a/
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T., Shi, F., Ma, G., Thingbaijam K. K. S, and Mai, P.M. "Did a submarine landslide contribute to the 2011 Tohoku tsunami?" Marine Geology. 2014.
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Open-File Report 2013-1170-C. California Geological Survey Special Report 229. 2013.
http://pubs.usgs.gov/of/2013/1170/c/pdf/ofr2013-1170c.pdf 7-6

PG&E Letter DCL-16-016 Enclosure 1 Uslu, 2008. Uslu, B. "Deterministic and Probabilistic tsunami studies in California from near and farfield sources," PhD Dissertation, USC. ProQuest. 2008.
Whitmore, 2013. Whitmore P., Bohyun-Bahng B., and Knight, W. "Effects of subfault discretization and horizontal displacement on tsunami generation." S. L. Ross and L. M., Jones eds. Tsunami Scenario: U.S. Geological Survey Open-File Report 2013. Chp D. 2013.
http://pubs. usgs.gov/of/2013/1170/b/.
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Wills, 2007. Wills, C. J., II, R. W., and Bryant, W. A. "California fault parameters for the national seismic hazard maps and working group on California earthquake probabilities. US Geological Survey Open File Report. 2007.
7-7

PG&E Letter DCL-16-016 Enclosure 1 Table 3-1                 Diablo Creek Location Used in Storm Calculations Elevation Used                100 feet Latitude                Longitude Location Used 35.211                   120.855 Table 3-2                 Storms Used in the Diablo Creek Site-Specific PMP Calculation Maximum        OCPP
                                                                                            ~ !I -         1-hmrr Total Adjustment DCPP 1-hour S t11tion Name                              L at            Lon     Year        ~'\>.fon          Dn     Rlrin.fill    factor:.        LIP OAKL.A..t
               ~"D SOUTH CA    .37.7830     -!22.1.51Jl)  1999            u              19      326          13&            450 BEl AIR HOTEL                       CA    34.03.60     -US.4550      198.3                                  3.0(1        1.40           420 OC:EA..."NSIDE                     CA    3.32560      -H l J2(}()   199'3                          16      2.95         13!!           4.1>0 LAGUNA
-     - - -BEACH  ---          _ ,_ CA    33.55!0      -R l7.SO!J.Qo  199'7          [2             *5      250          1.47           3.6S WHE.ELER GORGE - - -               CA    3436?0
                                                       -H 9_333()     199'2.          2             l2      2.32         1A3            3.32
                                                                                                        .--2~15
                                                                                               -*~-                                 ---~--
S.;.\J."'f rvLA.RCOS IROlJT CA    34..118.30   -! !9.3000     199'5           !             'lt                  lAB            3.18 DOlTI..TON TIJN~U                   CA    34-4650      -11'9:708()   1973             2             11      2.25          L35           3.04 ST.'\..!'4"DWOOD FIRE STATION      CA    34.4!50.0    -H9.6S30 198.3           9            29       1.4Q         1.19'          1S6 BOUIDER CREEK                       CA    J7J)9'l6     ... n22.1us. 1955           !2
:2~      2.20         1..29'         2.S..t
~q!QQ~!!_                           CA    .3-4534-0    -DO.l730      10()!2          12            20       1.09         1.14           2.5'9 GONZ.AI.ES.                        CA    3,6_5150     -li2U10()      199'4          H              10      2.09         1.16           2.42 SIGNAL HTI.l.                      CA    33J:&ao      -HS.1657      199'5                          4!      2.00          L19           2.3&
CANYON~                            CA    34.08.32     -tt t S.S418  194.3                         21       1.96         1..21          2.37 ARROYOSECO                          CA    3*63590      -Dl.29Q:()    19.9'3          H              11      2.01         L06            2..13 Rainfall and LIP values are in inches.
Table 3-3                 Site-Specific LIP for Various Durations at the DCPP Power Block Duration (hours)         DCPP LIP (inches) 0                        0 0.2.5                    2..5 0.5                     3.6
                                                   ~         0.75                     4.1 1-hourr                   4.5 2-hour                    5-.1 3-hour                    5..4 4-hour                     5.6 5-hour                     5.8 6-hour                    5-.9

PG&E Letter DCL-16-016 Enclosure 1 Table 3-4          Temporal Distributions of 15-Minute Incremental Point PMP at DCPP Site Front End          One-TI1urd          Center          Two-1ihErd               End Peaking            Peaking          Pealdng           Peaking               Pea:ki11g Duration      ILIP*       pup~ .. IUP              IUP               IUP                 ItiP (hours)      (inl                  (in)
PUP     (in)    PUP       (in}
PUP       (f; n)       Plll?'
0.000       0.000        0 .000    0.000     0.000  0.000     0.000   0.000      0.000   0.000         0.000 0.25{)      2.475        0.423     0.043     0.007  0.026     0.005   0.006      o.oo*r, 0.006         0.001 0.500       3.555        0.608     0.093     0.016  0.054     0.009   0.032      0.006   0.032         0.006
 .750       4.095        0.700     0."173    0.030  0.084     0.0'14  0.059      o.o*to  0.059         0.0 '10
 *t ooo      4.500        0 .769    0.269     0.046  o_*]18    0.020   0.036      0.0"15  O.OBG         0.015
  'L250      4.6B3        0.80"1    0.422     0.072  0_.161    0.028   0.115      0.020   0:1 15        0.020 "l 500     4 ..1341     0.828     0.605     o.*to3 0.2*H     0.036   0. 146     0.025   0.146         0.025
  *t750      4 .994       0.854     1."145    0.196  0.29"]    0.050   0.177      0.030   o.1n          0.030 2.000       5.130        0.877     3.620     0:.619 0.387     0.066   0.211      0.036   0.2"11        0.036, 2.250       5.226        0.8931 4.700     0.803  0.540     0.092   0.254      0.043   0.246         0.042 2.500       5.318        0.909     5.105     0.873  0.723     0.124   0.304      0.052   0.289         0.049 2.750       5..3'97      0.923     5.263     0.900  1.263     0.216   0.384      OJJ66   0.335         0.057 3.000       5.465        0.934     5.399     0.923  3:738     0.639   0.480      0.082   0.385         0.066 3.250       5.5*15       0.943     5.49'1    0.939  4.818     0.824   0.633      0."]08  0.453         0.077 3.500       5.561        0.951     5.558     0.950  5.223     0.893   0.816      0.139   0.532         0.09'1 3.750       5.604        0.95B     5.604     0.958  5.381     0 ..920 1.356      0.232   0.624         0.107 4.000       5.639        0.964     5.639     0.964  5,5"17    0.943   3.B31      0.655   0.720         0.123 4.250       5.673        0.970     5.673     0.970  5.608     0.959   4.911      0.839   0.856         0 .'146 4.500       5.704        0.975     5.704     0.975  5.676     0.970   5.316      0.909   t009          0. '1 72 4.750       5.735        0 .980    5.735     0.980  5.721     0.978   5.474      0.936   1.167         0.199 5.000       5.764        0 .985    5.764     0.985  5.757     0.984   5.6-10     0 . 959 '1.350        0.231 5.250       5.791        0.990     5.79'1    0.990  5.789     0.989   5.701      0.975   1.755         0.300 5.500       5.B18        0.994     5.818-    0.994  5.817     0.994   5.769      0.986   2.295         0.392 5.750       5.844        0.999     5.844     0.999  5.844     0.999   5.814      0.994   3.375         0.5'7 7 6.000       5.900        1.000     5.900     '1.000 5.900     '1.000  5.900      '1 .000 5.900         1.000 il IUP = cumulative UIP;- PUP= Portion of cumulative UP

PG&E Letter DCL-16-016 Enclosure 1 Table 3-5    Maximum LIP Flooding Parameters near the Doors and Areas to the West of the Turbine and Buttress Buildings MaxWD Door                                                  MaxWD Correlated                                              Grid        Max    above Threshold                                                above Door      Flood Buttress         Door/Unit                          Elevation      WSE     grid                 1 No           2   Elevation    Grid No                                     Threshold      Duration Building            No                              (ft PG&E             surface 2                                                                                            (hours)
Area                       (ft PG&E                 Datum)     (ft PG&E (ft)         (ft)
Datum)                              Datum) 0       1         2           3          4            5           6       7     (8) =(6) - (3)      9 Turbine Building Unit 1: North 1       A1 .1       86.8       1034        86 .58      86 .79   0.21        -0.01           0 A1 2       A1.2        86.8       1033        86.56       86.77    0.21        -0.03           0 3       A2 .1       86.5       1181        86.48       86.73    0.25         0.23         7.60 A2 4      8U101        86.5        877        86.48       86.58    0.10         0.08         6.90 5      8U102        86.5       1174        86.47       86 .67   0.20         0.17         3.30 6      8U103        86 .5      2106        86.45       86.64    0.19         0.14         0.55 7       A3.1        86.5       1326        86.45       86 .71   0.26         0.21         2.75 A3 8       A3.2        86.5       1633        86.47       86 .71   0.24         0.21         3.05 9       A3.3        86.5      2268         86.45       86 .62   0.17         0.12         0.45 10     8U104/5       86 .5     2600         86.47       86.66    0.19         0.16         3.20 11      101-1        86.8       1975        86.78       87.02    0.24         0.22         7.05 12      102-1        86.8       1655        86.73       87 .00   0.27         0.20         0.60 N/A 13      119-1        86.8      3507         86 .78      87.24    0.46         0.44         6.65 14      122-1        86.8      4238         86.77       87.43    0.66         0.63         5.10 15       C1 .1       86 .8     2944         86 .77      86 .93   0.16         0.13         4.50 c      16       129         86 .8     3118         86 .78      86.92    0.14         0.12         6.80 17       130         86 .8     3117         86 .77      86.86    0.09         0.06         2.95 Turbine Building Unit 2: South c      18       C1 .2       86.8      3469         86.77       87.04    0.27         0.24         5.30 19     8U101-2       86.7      3112         86.47       86.68    0.21        -0.02           0 20     8U1 02-2     86.65      3108         86.58       86.65    0.07         0.00           0 83 21     8U103-2       86.5      3101         86.36       86.42    0.06        -0.08           0 22     8U104-2       86.5      3454         86.36       86.46    0.10        -0 .04         0 23     8U108-2       86.5      4570         86.47       86.64    0.17         0.14         3.80 24     8U105-2       86.5      4760         86.48       86.62    0.14         0.12        6.40 82 25     8U106-2       86 .7     5350         86.64       86.86    0.22         0.16        2.85 26       82.1        86.8      5550         86.77       86 .91   0.14         0.11        3.20 27       81.1        86.8      5749         86.76       86 .87   0.11         0.07        0.35 81 28       81.2        86 .8     5950         86 .79      86 .93   0.14         0.13        7.35 29      101-2        86 .8     7412         86.77       87.12    0.35         0.32        4.35 30      102-2        86.8      7198         86 .78      87.12    0.34         0.32        6.75 N/A 31      119-2        86 .8     8287         86.78       87.23    0.45        0.43         7.05 32      122-2        86 .8     7431         86.78       87.31    0.53        0.51         6.55

PG&E Letter DCL-16-016 Enclosure 1 MaxWD Door                                                        MaxWD Correlated                                                    Grid          Max      above Threshold                                                      above Door      Flood Buttress             Door/Unit                            Elevation       WSE         grid No            2     Elevation     Grid No                                         Threshold 1    Duration Building                No                                (ft PG&E                 surface 2                                                                                                      (hours)
Area                            (ft PG&E                  Datum)      (ft PG&E (ft)         (ft)
Datum)                                Datum) 0          1         2            3           4            5            6           7     (8) =(6) - (3)      9 Unit 1 -Auxiliary Building Area (Ventilation Building) 33       192-1        86.8        5003         86 .78      87.48        0.70         0.68         6.95 N/A        34       191-1        86.8        7054         86.79        87.36       0.57         0.56         6.75 35       194-1        86 .8       6425         86 .77      87.35        0.58         0.55         5.20 Unit 2 -Auxiliary Building Area (Ventilation Building) 36       192-2        86 .8       7223         86.79        87.39       0.60         0.59         6.85 191-2 N/A        37                    86.8        11520        86.78       87.28        0.50         0.48         6.45 191A-2 38       194-2        86.8        10338        86.73       87.26        0.53         0.46         1.30 Fuel Handling Building (East of Unit 1) 39       363-1       116.8        8566        116.78       116.90       0.12         0.10         6.50 40        361-1       116.8        9681        116.78       117.19       0.41         0.39         6.00 N/A       41        360-1       116.8        9680        116.79       117.19       0.40         0.39         7.20 42        355-1       116.8        10367       116.76       117.25       0.49         0.45         3.80 43        354-1       116.8        10599       116.79       117.25       0.46         0.45         7.05 Fuel Handling Building (East of Unit 2) 44        360-2       116.8        11300       116.75       117.26       0.51         0.46         5.65 N/A       45        361-2       116.8        11536       116.76       117.26       0.50         0.46         5.30
[0.04]        [0.02]
46        363-2       116.8        12486       116.78       116.82                                 6.40 0.05**        0.05**
: 1. Negative value reflects no Ll P exceed a nee near the doors or areas
: 2. Door/Unit Nos. are shown in Figures 3-2a and 3-2b.
**    Minimum ponding depth taken as 0.05 feet.

PG&E Letter DCL-16-016 Enclosure 1 Table 3-6     Hydrodynamic and Total Associated Effects Resulting from LIP Flood Event 3
Velocity     Total Head          1 No. Door/Unit No2 Grid Cell No   Flow Depth (ft)                                Force {lb/ft)
Magnitude {ft/s)      {ft)
Turbine Building Unit 1: North 1       A1 .1         1034            0.00              0.00           1.00           0 2       A1 .2         1033            0.00              0.00           1.00           0 3       A2 .1         1181            0.22              0.55           1.23           9 4      BU101           877            0.08              0.23           1.08           3 5      BU102          1174            0.17              0.35           1.17           6 6      BU103          2106            0.14              0.21           1.14           5 7       A3.1          1326            0.21              0.19           1.21           8 8       A3.2          1633            0.20              0.09           1.20           8 9       A3.3          2268            0.12              0.10           1.12           4 10     BU104/5         2600            0.16              0.26           1.16           6 11      101-1          1975            0.20              0.41           1.21           8 12      102-1          1655            0.19              0.23           1.19           7 13      119-1          3507            0.42              0.25           1.43          19 14      122-1         4238             0.60              0.00           1.60          30 15       C1.1         2944             0.13              0.26           1.13          5 16       129           3118            0.12             0.35            1.12          4 17       130           3117            0.06              0.21           1.06          2 Turbine Building Unit 2: South 18       C1.2          3469            0.24             0.64            1.25          9 19     BU101-2        3112             0.00             0.00            1.00          0 20     BU102-2        3108             0.00             0.00            1.00          0 21     BU103-2        3101             0.00             0.00            1.00          0 22     BU104-2        3454             0.00             0.00            1.00          0 23     BU108-2        4570             0.13             0.15            1.13          5 24     BU105-2        4760             0.12             0.33            1.12          4 25     BU106-2        5350             0.16             0.52            1.16          6 26       B2.1         5550             0.10             0.31            1.11          4 27       B1 .1        5749             0.07             0.11            1.07          2 28       B1.2         5950             0.13             0.19            1.13          5 29      101-2         7412            0.31              0.24            1.31         13 30      102-2         7198            0.31              0.23            1.31         13 31      119-2         8287            0.42              0.28            1.42         19 32      122-2         7431            0.51              0.33            1.51         24

PG&E Letter DCL-16-016 Enclosure 1 3
2                                      Velocity       Total Head          1 No. Door/Unit No    Grid Cell No    Flow Depth (ft)                                 Force (lb/ft)
Magnitude (ft/s)        (ft)
Unit 1 -Auxiliary Building Area (Ventilation Building) 33        192-1            5003             0.67              0.13            1.67          35 34        191-1            7054             0.55              0.06            1.55          27 35        194-1            6425             0.53              0.12            1.53          25 Unit 2 -Auxiliary Building Area (Ventilation Building) 36        192-2            7223             0.59              0.22            1.59          29 191-2 37                         11520            0.47              0.20            1.47          21 191A-2 38        194-2            10338            0.45              0.07            1.45          20 Fuel Handling Building (East of Unit 1) 39        363-1            8566             0.10              0.24            1.10           3 40        361-1            9681             0.39              0.00            1.39          17 41        360-1            9680             0.39              0.15            1.39          17 42        355-1            10367            0.45              0.09            1.45          20 43        354-1            10599            0.45              0.10            1.45          20 Fuel Handling Building (East of Unit 2) 44        360-2            11300            0.45              0.06            1.45          20 45        361-2            11536            0.45              0.28            1.46          21 46        363-2            12486            0.02              0.00            1.02           1
: 1. Total force (force per linear foot length) is rounded to the nearest whole number.
: 2. Door/Unit Nos. are shown in Figures 3-2a and 3-2b.
: 3. Per American Society of Civil Engineers 7-10, the static water level should be increased by 1 ft. However, if no flow depth or velocity is present, total force= 0 lb/ft.

PG&E Letter DCL-16-016 Enclosure 1 Table 3-7  GEV Fitted Precipitation Estimates and 90%, Cl at DCPP Site 1,000,000 Years Return Period Lower 90% Cl Lower Limit                  2.84 inches Upper 90%, Cl Lower Limit                 3.60 inches Mean Precipitation                        3.17 inches

PG&E Letter DCL-16-016 Table 3-8 General Storm PMP (Page 1 of 7)                             Enclosure 1 15-Minute Incremental General Storm PMP Depths (inches) for Five Temporal Distributions Time (hours)
One-Third         Center      Two-Thirds Front Peaking                                            End Peaking Peaking        Peaking        Peaking 0          0.0000         0.0000         0.0000         0.0000     0.0000 0.25         0.6551         0.0711         0.0199         0.0192     0.0192 0.5         0.6174         0.0719         0.0212         0.0199     0.0199 0.75         0.5812         0.0727         0.0225         0.0205     0.0205 1          0.5464         0.0735         0.0238         0.0212     0.0212 1.25         0.3187         0.0742         0.0251         0.0219     0.0219 1.5         0.3157         0.0749         0.0264         0.0225     0.0225 1.75         0.3127         0.0757         0.0277         0.0232     0.0232 2          0.3097         0.0764         0.0290         0.0238     0.0238 2.25         0.3068         0.0771         0.0302         0.0245     0.0245 2.5         0.3038         0.0778         0.0315         0.0251     0.0251 2.75         0.3007         0.0785         0.0327         0.0258     0.0258 3          0.2977         0.0792         0.0339         0.0264     0.0264 3.25         0.2947         0.0798         0.0351         0.0271     0.0271 3.5         0.2917         0.0805         0.0363         0.0277     0.0277 3.75         0.2886         0.0811         0.0375         0.0283     0.0283 4          0.2856         0.0818         0.0387         0.0290     0.0290 4.25         0.2825         0.0824         0.0399         0.0296     0.0296 4.5         0.2794         0.0830         0.0410         0.0302     0.0302 4.75         0.2764         0.0836         0.0422         0.0309     0.0309 5          0.2733         0.0842         0.0433         0.0315     0.0315 5.25          0.2702         0.0847         0.0444         0.0321     0.0321 5.5         0.2671         0.0853         0.0455         0.0327     0.0327 5.75          0.2640         0.0858         0.0466         0.0333     0.0333 6          0.2608         0.0864         0.0477         0.0339     0.0339 6.25         0.2577         0.0869         0.0488         0.0345     0.0345 6.5         0.2546         0.0874         0.0498         0.0351     0.0351 6.75         0.2514         0.0879         0.0509         0.0357     0.0357 7          0.2482         0.0884         0.0519         0.0363     0.0363 7.25         0.2451         0.0889         0.0530         0.0369     0.0369 7.5         0.2419         0.0894         0.0540         0.0375     0.0375 7.75         0.2387         0.0898         0.0550         0.0381     0.0381 8          0.2355         0.0903         0.0560         0.0387     0.0387 8.25         0.2323         0.0907         0.0570         0.0393     0.0393 8.5         0.2291        0.0911          0.0579         0.0399     0.0399 8.75         0.2259        0.0915          0.0589         0.0404     0.0404 9          0.2227        0.0919          0.0598         0.0410     0.0410 9.25          0.2194        0.0923          0.0608         0.0416     0.0416 9.5          0.2162        0.0927          0.0617         0.0422     0.0422 9.75          0.2129        0.0931          0.0626         0.0427     0.0427 10          0.2097        0.0934          0.0635         0.0433     0.0433 10.25         0.2064        0.0938          0.0644         0.0439     0.0439 10.5         0.2031        0.0941          0.0653         0.0444     0.0444

PG&E Letter DCL-16-016 Table 3-8 General Storm PMP (Page 2 of 7)                              Enclosure 1 15-Minute Incremental General Storm PMP Depths (inches) for Five Temporal Distributions Time (hours)
One-Third          Center      Two-Thirds Front Peaking                                            End Peaking Peaking         Peaking       Peaking 10.75        0.1998         0.0944          0.0661        0.0450     0.0450 11         0.1965         0.0947          0.0670        0.0455     0.0455 11.25        0.1932         0.0950          0.0679        0.0461     0.0461 11.5        0.1899         0.0953          0.0687        0.0466     0.0466 11.75        0.1866         0.0956          0.0695        0.0472     0.0472 12         0.1832         0.0959          0.0703        0.0477     0.0477 12.25        0.0988         0.0961          0.0711        0.0482     0.0482 12.5        0.0988         0.0964          0.0719        0.0488     0.0488 12.75        0.0988         0.0966          0.0727        0.0493     0.0493 13         0.0988         0.0968          0.0735        0.0498     0.0498 13.25        0.0988         0.0970          0.0742        0.0504     0.0504 13.5        0.0988         0.0972          0.0749        0.0509     0.0509 13.75        0.0988         0.0974          0.0757        0.0514     0.0514 14         0.0988         0.0976          0.0764        0.0519     0.0519 14.25        0.0988         0.0977          0.0771        0.0524     0.0524 14.5        0.0988         0.0979          0.0778        0.0530     0.0530 14.75        0.0987         0.0980          0.0785        0.0535     0.0535 15         0.0987         0.0982          0.0792        0.0540     0.0540 15.25        0.0987         0.0983          0.0798        0.0545     0.0545 15.5        0.0987         0.0984          0.0805        0.0550     0.0550 15.75        0.0986         0.0985          0.0811        0.0555     0.0555 16         0.0986         0.0986          0.0818        0.0560     0.0560 16.25        0.0986         0.0986        ' 0.0824        0.0565     0.0565 16.5        0.0985         0.0987          0.0830        0.0570     0.0570 16.75        0.0985         0.0987          0.0836        0.0574     0.0574 17         0.0984         0.0988          0.0842        0.0579     0.0579 17.25        0.0984         0.0988          0.0847        0.0584     0.0584 17.5        0.0983         0.0988          0.0853        0.0589     0.0589 17.75        0.0983         0.0988          0.0858        0.0594     0.0594 18         0.0982         0.0988          0.0864        0.0598     0.0598 18.25        0.0982         0.1866          0.0869        0.0603     0.0603 18.5        0.0981         0.1932          0.0874        0.0608     0.0608 18.75        0.0980         0.1998          0.0879        0.0612     0.0612 19         0.0980         0.2064          0.0884        0.0617     0.0617 19.25        0.0979         0.2129          0.0889    I 0.0622     0.0622 19.5        0.0978         0.2194          0.0894        0.0626     0.0626 19.75        0.0977         0.2259          0.0898        0.0631     0.0631 20         0.0977         0.2323          0.0903        0.0635     0.0635 20.25        0.0976         0.2387          0.0907        0.0640     0.0640 20.5         0.0975         0.2451          0.0911        0.0644     0.0644 20.75        0.0974         0.2514          0.0915        0.0648     0.0648 21         0.0973         0.2577          0.0919        0.0653     0.0653 21.25        0.0972         0.2640          0.0923        0.0657     0.0657

PG&E Letter DCL-16-016 Table 3-8 General Storm PMP (Page 3 of 7)                             Enclosure 1 15-Minute Incremental General Storm PMP Depths (inches) for Five Temporal Distributions Time (hours)
One-Third         Center      Two-Thirds Front Peaking                                            End Peaking Peaking        Peaking        Peaking 21.5        0.0971         0.2702         0.0927         0.0661     0.0661 21.75        0.0970         0.2764         0.0931         0.0666     0.0666 22         0.0969         0.2825         0.0934         0.0670     0.0670 22.25        0.0968         0.2886         0.0938         0.0674     0.0674 22.5        0.0967         0.2947         0.0941         0.0679     0.0679 22.75        0.0966         0.3007         0.0944         0.0683     0.0683 23         0.0965         0.3068         0.0947         0.0687     0.0687 23 .25       0.0964         0.3127         0.0950         0.0691     0.0691 23.5        0.0962         0.3187         0.0953         0.0695     0.0695 23.75        0.0961         0.5812         0.0956         0.0699     0.0699 24         0.0960         0.6551         0.0959         0.0703     0.0703 24.25        0.0959         0.6174         0.0961         0.0711     0.0707 24.5        0.0957         0.5464         0.0964         0.0719     0.0711 24.75        0.0956         0.3157         0.0966         0.0727     0.0715 25         0.0955         0.3097         0.0968         0.0735     0.0719 25.25        0.0953         0.3038         0.0970         0.0742     0.0723 25.5        0.0952         0.2977         0.0972         0.0749     0.0727 25.75        0.0950         0.2917         0.0974         0.0757     0.0731 26         0.0949         0.2856         0.0976         0.0764     0.0735 26.25        0.0947         0.2794         0.0977         0.0771     0.0738 26.5        0.0946         0.2733         0.0979         0.0778     0.0742 26.75        0.0944         0.2671         0.0980         0.0785     0.0746 27         0.0943         0.2608         0.0982         0.0792     0.0749 27.25        0.0941         0.2546         0.0983         0.0798     0.0753 27.5        0.0939         0.2482         0.0984         0.0805     0.0757 27.75        0.0938         0.2419         0.0985         0.0811     0.0760 28         0.0936         0.2355         0.0986         0.0818     0.0764 28.25        0.0934         0.2291         0.0986         0.0824     0.0768 28.5        0.0933         0.2227         0.0987         0.0830     0.0771 28.75        0.0931         0.2162         0.0987         0.0836     0.0775 29         0.0929         0.2097         0.0988         0.0842     0.0778 29.25        0.0927         0.2031         0.0988         0.0847     0.0782 29.5        0.0925         0.1965         0.0988         0.0853     0.0785 29.75        0.0923         0.1899         0.0988         0.0858     0.0788 30         0.0921         0.1832         0.0988         0.0864     0.0792 30.25        0.0919         0.0988         0.1866         0.0869     0.0795 30.5        0.0917         0.0988         0.1932         0.0874     0.0798 30.75        0.0915         0.0988         0.1998         0.0879     0.0802 31         0.0913         0.0988         0.2064         0.0884     0.0805 31.25        0.0911         0.0988         0.2129         0.0889     0.0808 31.5        0.0909         0.0987         0.2194         0.0894     0.0811 31.75        0.0907         0.0987         0.2259         0.0898     0.0814 32         0.0905         0.0986         0.2323         0.0903     0.0818

PG&E Letter DCL-16-016 Table 3-8 General Storm PMP (Page 4 of 7)                                Enclosure 1 15-Minute Incremental General Storm P:tvfP Depths (inches) for Five Temporal Distributions Time (hours)
One-Third         Center      Two-Thirds Front Peaking                                              End Peaking Peaking        Peaking        Peaking 32.25        0.0903         0.0985         0.2387         0.0907        0.0821 32.5        0.0900         0.0984         0.2451         0.0911        0.0824 32.75        0.0898         0.0983         0.2514         0.0915        0.0827 33         0.0896         0.0982         0.2577         0.0919        0.0830 33.25        0.0894         0.0981         0.2640         0.0923        0.0833 33.5        0.0891         0.0980         0.2702         0.0927        0.0836 33.75        0.0889         0.0978         0.2764         0.0931        0.0839 34         0.0887         0.0977         0.2825         0.0934        0.0842 34.25        0.0884         0.0975         0.2886         0.0938        0.0844 34.5        0.0882         0.0973         0.2947         0.0941        0.0847 34.75        0.0879         0.0971         0.3007         0.0944        0.0850 35         0.0877         0.0969         0.3068         0.0947        0.0853 35.25        0.0874         0.0967         0.3127         0.0950        0.0856 35.5        0.0872         0,0965         0.3187         0.0953        0.0858 35.75        0.0869         0.0962         0.5812         0.0956        0.0861 36         0.0866         0.0960         0.6551         0.0959        0.0864 36.25        0.0864         0.0957         0.6174         0.0961        0.0866 36.5        0.0861         0.0955         0.5464         0.0964        0.0869 36.75        0.0858         0.0952         0.3157         0.0966        0.0872 37         0.0856         0.0949         0.3097         0.0968        0.0874 37.25        0.0853         0.0946         0.3038         0.0970        0.0877 37.5        0.0850         0.0943         0.2977         0.0972        0.0879 37.75        0.0847         0.0939         0.2917         0.0974        0.0882 38         0.0844         0.0936         0.2856         0.0976        0.0884 38.25        0.0842         0.0933         0.2794         0.0977        0.0887 38.5        0.0839         0.0929         0.2733         0.0979        0.0889 38.75        0.0836         0.0925         0.2671         0.0980        0.0891 39         0.0833         0.0921         0.2608         0.0982        0.0894 39.25        0.0830         0.0917         0.2546         0.0983        0.0896 39.5        0.0827         0.0913         0.2482         0.0984        0.0898 39.75        0.0824         0.0909         0.2419         0.0985        0.0900 40         0.0821         0.0905         0.2355         0.0986        0.0903 40.25        0.0818         0.0900         0.2291         0.0986        0.0905 40.5        0.0814         0.0896         0.2227         0.0987        0.0907 40.75        0.0811         0.0891         0.2162         0.0987        0.0909 41         0.0808         0.0887         0.2097         0.0988        0.0911 41.25        0.0805         0.0882         0.2031         0.0988        0.0913 41.5        0.0802         0.0877         0.1965         0.0988        0.0915 41.75        0.0798         0.0872         0.1899         0.0988        0.0917 42         0.0795         0.0866         0.1832         0.0988        0.0919 42.25        0.0792         0.0861         0.0988         0.1866        0.0921 42 .5       0.0788         0.0856         0.0988         0.1932        0.0923 42.75        0.0785         0.0850         0.0988         0.1998        0.0925

PG&E Letter DCL-16-016 Table 3-8 General Storm PMP (Page 5 of 7)                             Enclosure 1 15-Minute Incremental General Storm PMP Depths (inches) for Five Temporal Distributions Time (hours)
One-Third         Center      Two-Thirds Front Peaking                                            End Peaking Peaking        Peaking        Peaking 43         0.0782         0.0844 .       0.0988         0.2064     0.0927 43.25        0.0778         0.0839         0.0988         0.2129     0.0929 43.5        0.0775         0.0833         0.0987         0.2194     0.0931 43.75        0.0771         0.0827         0.0987         0.2259     0.0933 44         0.0768         0.0821         0.0986         0.2323     0.0934 44.25        0.0764         0.0814         0.0985         0.2387     0.0936 44.5        0.0760         0.0808         0.0984         0.2451     0.0938 44.75        0.0757         0.0802         0.0983         0.2514     0.0939 45         0.0753         0.0795         0.0982         0.2577     0.0941 45.25        0.0749         0.0788         0.0981         0.2640     0.0943 45.5        0.0746         0.0782         0.0980         0.2702     0.0944 45.75        0.0742         0.0775         0.0978         0.2764     0.0946 46         0.0738         0.0768         0.0977         0.2825     0.0947 46.25        0.0735         0.0760         0.0975         0.2886     0.0949 46.5        0.0731         0.0753         0.0973         0.2947     0.0950 46.75        0.0727         0.0746         0.0971         0.3007     0.0952 47         0.0723         0.0738         0.0969         0.3068     0.0953 47.25        0.0719         0.0731         0.0967         0.3127     0.0955 47.5        0.0715         0.0723         0.0965         0.3187     0.0956 47.75        0.0711         0.0715         0.0962         0.5812     0.0957 48         0.0707         0.0707         0.0960         0.6551     0.0959 48 .25       0.0703         0.0703         0.0957         0.6174     0.0960 48.5        0.0699         0.0699         0.0955         0.5464     0.0961 48.75        0.0695         0.0695         0.0952         0.3157     0.0962 49         0.0691         0.0691         0.0949         0.3097     0.0964 49.25        0.0687         0.0687         0.0946         0.3038     0.0965 49.5        0.0683         0.0683         0.0943         0.2977     0.0966 49.75        0.0679         0.0679         0.0939         0.2917     0.0967 50         0.0674         0.0674         0.0936         0.2856     0.0968 50.25        0.0670         0.0670         0.0933         0.2794     0.0969 50.5        0.0666         0.0666         0.0929         0.2733     0.0970 50.75        0.0661         0.0661         0.0925         0.2671     0.0971 51         0.0657         0.0657         0.0921         0.2608     0.0972 51.25        0.0653         0.0653         0.0917         0.2546     0.0973 51.5        0.0648         0.0648         0.0913         0.2482     0.0974 51.75        0.0644         0.0644         0.0909         0.2419     0.0975 52         0.0640         0.0640         0.0905         0.2355     0.0976 52 .25       0.0635         0.0635         0.0900         0.2291     0.0977 52.5        0.0631         0.0631         0.0896         0.2227     0.0977 52.75        0.0626         0.0626         0.0891         0.2162     0.0978 53         0.0622         0.0622         0.0887         0.2097     0.0979 53.25        0.0617         0.0617         0.0882         0.2031     0.0980 53.5        0.0612         0.0612         0.0877         0.1965     0.0980

PG&E Letter DCL-16-016 Table 3-8 General Storm PMP (Page 6 of 7)                                 Enclosure 1 15-M:inute Incremental General Storm Pl\IIP Depths (inches) for Five Temporal Distributions Time (hours)
One-Third         Center      Two-Thirds Front Peaking                                               End Peaking Peaking        Peaking        Peaking 53.75        0.0608          0.0608         0.0872         0.1899        0.0981 54         0.0603          0.0603         0.0866         0.1832        0.0982 54.25        0.0598          0.0598         0.0861         0.0988        0.0982 54.5        0.0594          0.0594         0.0856         0.0988        0.0983 54.75        0.0589          0.0589         0.0850         0.0988        0.0983 55         0.0584          0.0584         0.0844         0.0988        0.0984 55.25        0.0579          0.0579         0.0839         0.0988        0.0984 55.5        0.0574          0.0574         0.0833         0.0987        0.0985 55.75        0.0570          0.0570         0.0827         0.0987        0.0985 56         0.0565          0.0565         0.0821         0.0986        0.0986 56.25        0.0560          0.0560         0.0814         0.0985        0.0986 56.5        0.0555          0.0555         0.0808         0.0984        0.0986 56.75        0.0550          0.0550         0.0802         0.0983        0.0987 57         0.0545          0.0545         0.0795         0.0982        0.0987 57.25        0.0540          0.0540         0.0788         0.0981        0.0987 57.5        0.0535          0.0535         0.0782         0.0980        0.0987 57.75        0.0530          0.0530         0.0775         0.0978        0.0988 58         0.0524          0.0524         0.0768         0.0977        0.0988 58.25        0.0519          0.0519         0.0760         0.0975        0.0988 58.5        0.0514          0.0514         0.0753         0.0973        0.0988 58 .75       0.0509          0.0509         0.0746         0.0971        0.0988 59         0.0504          0.0504         0.0738         0.0969        0.0988 59.25        0.0498          0.0498         0.0731         0.0967        0.0988 59.5        0.0493          0.0493         0.0723         0.0965        0.0988 59.75        0.0488          0.0488         0.0715         0.0962        0.0988 60         0.0482          0.0482         0.0707         0.0960        0.0988 60.25        0.0477          0.0477         0.0699         0.0957        0.1832 60.5        0.0472          0.0472         0.0691         0.0955        0.1866 60.75        0.0466          0.0466         0.0683         0.0952        0.1899 61         0.0461          0.0461         0.0674         0.0949        0.1932 61 .25       0.0455          0.0455         0.0666         0.0946        0.1965 61.5        0.0450          0.0450         0.0657         0.0943        0.1998 61.75        0.0444          0.0444         0.0648         0.0939        0.2031 62         0.0439          0.0439         0.0640         0.0936        0.2064 62.25        0.0433          0.0433         0.0631         0.0933        0.2097 62.5        0.0427          0.0427         0.0622         0.0929        0.2129 62.75        0.0422          0.0422         0.0612         0.0925        0.2162 63         0.0416          0.0416         0.0603         0.0921        0.2194 63.25        0.0410          0.0410         0.0594         0.0917        0.2227 63.5        0.0404          0.0404         0.0584         0.0913        0.2259 63 .75       0.0399          0.0399         0.0574         0.0909        0.2291 64         0.0393          0.0393         0.0565         0.0905        0.2323 64.25        0.0387          0.0387         0.0555         0.0900        0.2355

PG&E Letter DCL-16-016 Table 3-8 General Storm PMP (Page 7 of 7)                             Enclosure 1 15-Minute Incremental General Storm PMP Depths (inches) for Five Temporal Distributions Time (hours)
One-Third         Center      Two-Thirds Front Peaking                                           End Peaking Peaking        Peaking        Peaking 64.5        0.0381         0.0381         0.0545         0.0896     0.2387 64.75        0.0375         0.0375         0.0535         0.0891     0.2419 65         0.0369         0.0369         0.0524         0.0887     0.2451 65.25        0.0363         0.0363         0.0514         0.0882     0.2482 65.5        0.0357         0.0357         0.0504         0.0877     0.2514 65.75        0.0351         0.0351         0.0493         0.0872     0.2546 66         0.0345         0.0345         0.0482         0.0866     0.2577 66.25        0.0339         0.0339         0.0472         0.0861     0.2608 66.5        0.0333         0.0333         0.0461         0.0856     0.2640 66.75        0.0327         0.0327         0.0450         0.0850     0.2671 67         0.0321         0.0321         0.0439         0.0844     0.2702 67.25        0.0315         0.0315         0.0427         0.0839     0.2733 67.5        0.0309         0.0309         0.0416         0.0833     0.2764 67.75        0.0302         0.0302         0.0404         0.0827     0.2794 68         0.0296         0.0296         0.0393         0.0821     0.2825 68.25        0.0290         0.0290         0.0381         0.0814     0.2856 68.5        0.0283         0.0283         0.0369         0.0808     0.2886 68.75        0.0277         0.0277         0.0357         0.0802     0.2917 69         0.0271         0.0271         0.0345         0.0795     0.2947 69.25        0.0264         0.0264         0.0333         0.0788     0.2977 69.5        0.0258         0.0258         0.0321         0.0782     0.3007 69.75        0.0251         0.0251         0.0309         0.0775     0.3038 70         0.0245         0.0245         0.0296         0.0768     0.3068 70.25        0.0238         0.0238         0.0283         0.0760     0.3097 70.5        0.0232         0.0232         0.0271         0.0753     0.3127 70.75        0.0225         0.0225         0.0258         0.0746     0.3157 71         0.0219         0.0219         0.0245         0.0738     0.3187 71.25        0.0212         0.0212         0.0232         0.0731     0.5464 71.5        0.0205         0.0205         0.0219         0.0723     0.5812 71.75        0.0199         0.0199         0.0205         0.0715     0.6174 72         0.0192         0.0192         0.0192         0.0707     0.6551 Total        30.90          30.90          30.90           30.90      30.90

PG&E Letter DCL-16-016 Enclosure 1 Table 3-9      Wind Speeds and Direction (by date) of Analyzed NDBC Buoys along the California Central Coast Wind Direction Avg        St Dev Wind Direction      Max Daily Wind Speed      Avg Daily Wind Speed       St Dev Wind Speed Year   Month   Date  46011   46023      46028  46011     46023      46028 46011     46023     46028 46011      46023    46028 46011      46023    46028 2008     2      24   175.0    179.8             24.4       30.4            17.5      20.1            9.8        10.0           4.2        5.0 2008     2      25   316.8    326.3             32.1       33.3             9.5       9.9            6.0         7.1           2.0        2.1 2007    12       4   329.7    340.0             11.3       8.3             10.8      11.8            7.2         8.1           1.8        2.1 2001     1      11   218.7    214.0      206.4  33.6       32.3      27.7  14.5      16.3      13.3  8.7        10.0      9.1  2.4        2.4      2.3 2001     1      12   189.1    189.3      229.3  40.9       44.4      90.4  12.9      12.8       9.8  7.2         7.4      5.8  3.2        3.9      2.7 2007    12       5   336.3    340.6             10.9        9.1            11.5      12.5            8.3        10.0           1.5        1.2 2004     2      26   216.4    238.8      234.3  56.6       52.5      35.8   7.2       7.7       8.6   4.5        5.2      5.9  1.7        1.4      1.4 2007     1       5   319.8    283.5      347.0  68.7      128.0       5.5  16.4      18.6      17.3  12.9       14.5     15.5  2.4        2.9      1.0 2008     1       5   191.5    210.8             34.6       34.7            14.2      14.2            5.4         5.6           3.8        4.1 2000    12      22   330.4    312.5      306.9  10.1        8.0      17.0  10.2      11.4       9.1  7.6         8.7      5.2  1.7        1.8      2.4 1999     4       4   308.2    299.5      312.0  11.3        7.5       5.7  18.4       20.9     18.1  12.7       15.2     14.3  3.1        3.0      2.3 1999     1      27   169.7    258.0      322.3 154.9      132.2       6.6  10.7      13.2      13.0   6.3        8.4      9.9  1.6        2.0      1.6 2001    12      21   267.8               268.1  37.4                 37.3  11.8       13.0     13.8   8.1        9.2     10.1  1.9        2.1      2.0 1998    12       9   174.5    282.0      278.2 164.9      124.7      90.8  10.9      13.1      13.0   7.1        8.9      9.5  1.8        1.8      4.0 1998    12       1   192.3    163.4      220.8 137.1      135.7      98.7  10.7       12.7     10.6   5.2        5.5      6.9  2.6        3.4      2.3 1999     1      26   259.0    256.2      265.0  20.2       14.3      14.0  11.2       14.0     10.7   6.6        8.1      7.0  2.2        2.6      2.0 2000    12      23   316.5    312.2      318.5  67.4        9.1       6.5  10.5       12.6     11.8   6.7       10.2      9.1  2.6        1.7      0.9 2001     5       2   321.8    324.4      315.8   4.1        5.2       4.4  12.3       14.0     17.2   9.8       12.0     14.9  1.4        1.2      1.2 2009    11       8   332.3    272.5             15.6      141.1            10.5       13.4     13.3   8.2        9.8      8.7  1.3        1.5      2.6 1998    11      26   260.6    299.0      249.5 125.9       59.9      90.4   9.5        9.7      6.0   4.5        5.8      3.1  2.0        1.6      1.8 2009    11       7   319.2    333.5              5.2        4.3            11.8       14.2     14.5   9.5       11.2     11.5  1.3        1.6      2.1 2008     5      22   315.7    327.5      326.6   5.6        4.8       3.2  15.1       18.2     17.2  13.4       15.8     15.8  1.5        1.6      1.1 2008     1       6   229.0    224.3             62.8       74.3            10.6       11.4            5.5        6.0           2.5        2.8 1999     2      17   221.4    290.7      241.5 118.3       20.0      65.9   8.2        9.0      6.1   3.3        4.3      3.9  2.1        2.2      1.1 Wind Speeds - m/s Wind Direction - degrees

PG&E Letter DCL-16-016 Enclosure 1 Table 3-10    Maximum Daily Wave Heights and Direction (by date) of Analyzed NDBC Buoys along the California Central Coast Maxi Daily Wave Height               Max Daily Peak Wave Period               Avg Daily Wave Direction               Std Dev, Wave Direction        i Year  Month  Date 46011   46023     46028    46215 46218  46011  46023     46028    46215   46218  46011      46028     46215      46218   46011     46028    46215      46218  I 2008    2     24   6.99    7.42      5.78     5.58  9.97  21.05  20.00      19.05    20.00  20.00  228.0      210.8     225.2      214.4    43.0      46.2     30.5       57.9  i I
2008    2     25   6.95    7.26      5.68     5.04   7.5  17.39  20.00      16.00    18.18  18.18  272.5      281.6     254.9      271.1     5.1      10.1     7.1        4.6 2007   12      4   5.05    5.73      5.92      4.2  7.37  19.05  20.00      19.05    20.00  20.00  272.6      275.1     254.3      267.3     8.6       9.5      5.2        5.0 2001    1     11   6.98    7.66      8.51      6.5  7.23  16.67  16.67      16.67    16.67  16.67                       269.9      293.6                        7.0        5.1 2001    1     12   7.04    6.67      6.95      5.6  7.21  16.67  16.67      16.67    16.67  16.67                       267.4      294.7                        8.6       4.3 2007   12      5   5.62    7.23      5.59     4.72  7.14  19.05  20.00      19.05    20.00  18.18  273.3      280.2     251.0      266.1     7.5       6.5      7.5       4.1 2004    2     26   7.16    6.75      7.65     5.94  7.13  16.67  20.00      2.0.00   18.18  18.18             2.59.3    264.2      2.87.0             39.3     13.7        6.0 2007    1      5   6.2.2. 6.66      6.92. 3.96  7.12. 17.39  16.67      17.39    18.18  16.67  299.3      311.0     264.8      305.5     9.4      13.5     11.7        8.8 2008    1      5   8.62    7.61      8.96     6.42  7.08  19.05  20.00      19.05    20.00  2.0.00 276.5      268.5     254.8      278.0    34.4      33.1     18.8       2.3.1 2.000  12     22. 6.21    5.2.8     7.91     6.05   6.4  2.0.00 2.0.00     20.00    2.0.00 2.0.00                      2.61.8     283.9                        6.7        7.8 1999    4      4   6.64    6.58      7.72. 3.66  6.57  12..50 14.29      14.2.9   15.38  15.38                       2.74.8     311.0                        5.5        3.4 1999    1     27   6.65    6.26        7.7    5.33  6.06  16.67  16.67      16.67    16.67  16.67                       2.69.8     302..1                       3.4        4.7 2001   12. 2.1  6.37     7.1      7.68     5.45  6.12  16.67  16.67      16.67    16.67  16.67                       264.5      287.2                        5.5        4.8 1998   12      9   6.52    6.84        7.5    4.15  4.83  20.00  20.00      20.00    20.00  18.18                       270.6      301.0                        6.9        5.8 1998   12      1   6.2.7   6.71      7.44     5.33  5.78  20.00  20.00      20.00    20.00  18.18                       264.3      289.4                        6.5        6.2 1999    1     26   4.22    3.73      7.31     4.37  4.07  16.67  16.67      16.67    16.67  16.67                       273.5      302.8                        4.0        6.1 2000   12     2.3  7.2.1   6.78      7.27     6.12  6.39  20.00  16.67      16.67    18.18  18.18                       266.1      288.3                        5.2.       3.4 2001    5      2   6.33    5.86      7.22     4.33  6.05  16.67  16.67      14.29    16.67  15.38                       272.4      305.5                        3.9        4.5 2009   11      8   5.35    6.68      7.19     3.42  6.37  19.05  20.00      17.39    18.18  18.18  317.5      317.5     265.3      307.5     7.2       6.3      4.9        3.4 1998   11     2.6  4.92. 5.67       7.09    4.36  4.87  20.00  2.0.00     2.0.00   18.18  18.18                       2.69.5     2.93.2.                      5.2        4.4 2009   11      7   5.51    6.06       7.03    3.93  6.93  19.05  20.00      19.05    20.00  2.0.00 314.2. 317.8     269.6      305.4     8.6       3.0      4.6        6.3 2008    5     22   5.98    6.02.        7      3.7  6.82. 12.12  12.50      12.90    13.33  13.33  318.3      316.0     277.3      315.1     4.6       3.6      3.9        4.1 2008    1      6   7.19    7.14       6.14     4.4  5.77  17.39  16.67      17.39    18.18  18.18  298.6      293.9     261.4      296.6     5.1       6.1      4.7        3.9 1999    2. 17   7.13     5.4       5.35    4.15  5.55  20.00  20.00      20.00    20.00  20.00                       2.69.1     291.8                        6.2        3.8 Wave Heights - meters Wave Direction - degrees

PG&E Letter DCL-16-016 Enclosure 1 Table 3-11       Estimated 200 Year Return Period Calibrated to DELFT3D Significant Wave Height 200 Yr RP NDBC                     Delft3D     Percent (Hsig)
Buoy                   (Hsig) [m] Difference
[m]
46028        11.407     11.5510    -1.26%
46215        7.9061     7.9058     0.00%
46011        11.049     11.0456    -1.37%
46023        11.306     11.2005    -0.43%
46218        11.042     11.3541    -0.03%
Table 3-12       Boundary and Physical Inputs Used in the DELFT3D Simulation
* Significant wave height, 11.2 m
* Peak wave period, 20 s
* Wave Direction, 270&deg; (westerly)
* Directional spreading, 4o
* Wind Velocity, 10 m/s
* Wind Direction, 270&deg; (westerly)
* Water Density, 1,025 kg/m 3
* Collins Bottom Friction Coefficient, 0.1118 (calibrated)

PG&E Letter DCL-16-016 Enclosure 1 Table 3-13        Maximum Amplitude of Far-Field Coseismic Tsunamis Recorded at Avilla Beach (AB) and Port San Luis (PSL) Tide Gauges Far-Field Coseismic Tsunamis (since 1946)                     Max. Ampl. (m)
No.       Date         Region/source       Lat. (deg.)  Lon. (deg.)   Dist. (km)   Mw    PSL       AB 1      4/1/1946       Alaska/Unimak         53.492      -162.832       3839       8.6    1.2 2    12/20/1946      Japan/E. Honshu           33          135.6       9039       8.1              0.1 3     11/4/1952       Kamchatka/Kuril       52.755       160.057       6289        9               1.4 4      3/9/1957            Alaska           51.292      -175.629       4668       8.6             0.53 5     11/6/1958       Kamchatka/Kuril        44.53        148.54       7411       8.3             0.14 6     5/22/1960      S. America/Chile        -39.5         -74.5       9565       9.6             0.99 7    10/13/1963       Kamchatka/Kuril        44.77       149.798       7310       8.5              0.3 8     3/28/1964            Alaska           61 .017     -147.648       3448       9.2              1.6 9    10/17/1966       S. America/Peru      -10.748       -78.638       6759       8.1              0.1 10     5/16/1968      Japan/E. Honshu          40.8         143.2       7994       8.2              0.1 11    11/29/1975            Hawaii           19.451      -155.033       3785       7.7   0.39 12     6/22/1977      S. Pac.!Tonga Tr.     -22.878        -175.9       8685       7.2   0.12 13     10/4/1994       Kamchatka/Kuril       43.773       147.321       7535       8.3   0.15 14     7/30/1995      S. America/Chile       -23.34       -70.294       8402        8    0.12 15     12/3/1995       Kamchatka/Kuril       44.663         149.3       7349       7.9   0.07 16     6/10/1996     Alaska/Andreanov        51.564      -177.632       4805       7.9   0.09 17    11/26/1999     S. PacificNanuatu      -16.423       168.214       9423       7.5   0.05 18     6/23/2001       S. America/Peru      -16.265       -73.641       7577       8.4   0.14 19     9/25/2003        Japan/Hokaido        41.815        143.91       7884       8.3   0.03 20    12/26/2004     Indonesia/Sumatra        3.316        95 .854      14286      9.1   0.27 21    11/15/2006       Kamchatka/Kuril       46.592       153.266       6979       8.3   0.56 22     1/13/2007       Kamchatka/Kuril       46.243       154.524       6906       8.1   0.11 23      4/1/2007    S. Pac./Solomon lsi.     -8.466       157.043       9851       8.1   0.09 24     8/15/2007       S. America/Peru      -13.386       -76.603       7127        8    0.08 25      1/3/2009         S. Pac./PNG         -0.414       132.885       11518      7.6   0.08 26     9/29/2009      S. Pac./Samoa Is.     -15.489      -172.095       7812        8    0.28 27     10/7/2009     S. Pac.Nanuatu Is.     -13.006        166.51       9329       7.6   0.08 28     2/27/2010      S. America/Chile      -36.122       -72.898       9350       8.8   0.80 29     3/11/2011        Japan/Honshu         38.297       142.372       8200        9    2.02 30    10/28/2012    Canada/Queen Ch.         52.788      -132.101       2153       7.7   0.27 31      2/6/2013    S. Pac./Solomon lsi.    -10.799       165.114       9295       7.9   0.14 32      4/1/2014      S. America/Chile      -19.642       -70.817       8056       8.2   0.22 Table 3-14        Maximum Amplitude of Near-Field Coseismic Tsunamis Far-Field Coseismic Tsunamis (since 1946)                     Max. Ampl. (m)
No.       Date         Region/source       Lat. (deg.)  Lon. (deg.)   Dist. (km)   Mw    PSL       AB 11/22/1878      San Luis Obispo                                            N/A*
33      11/4/1927     California/Lompoc         34.813       -120.774     40      7.3** 1.2***
34      4/25/1992   California/Humboldt         40.368       -124.316    657       7.2   0.07
* 11/22/1878 event was likely caused by a local submanne mass failure
** Original magnitude was Mw 7.0; increased magnitude was recommended by Eilsworth (2003)
*** Reported in literature. Tide gauge not yet installed .

PG&E Letter DCL-16-016 Enclosure 1 Table 3-15      Maximum Expected Magnitudes (Mw) Used in RPMT Simulations Sources                           MaxMw            References Far-Field        Alaska (ASZ)           9.2        Johnson et al. (1996) 9.2        lchinose et al. (2007) 9.2        Suito and Freimueller (2009)
Semidi (SSZ)           9.1        Ross et al. (2013), Whitmore et al.
(2013)
Kamchatka              9.2        Gonzalez et al. (2009)*
(KSZ)                             (Zone KSZ1)
                                ~                       Gonzalez et al. (2009)*
(Zone KSZ2)
Japan (JSZ)            9.1        Grilli et al. (2013a,b; Tappin et al., 2014)
Near-Field       Hosgri fault          7.66        Petersen et al. (2008), Wills et al. (2007)*
(HFS)
San Lucia             7.49        Petersen et al. (2008), Wills et al. (2007)*
fault (SLFS)
* Parameters rev1sed 1n present study Table 3-16      SMF Parameters Used in RPMT Simulations SMF proxy simulations                Goleta. SMF                Big Sur North In NHWAVE                            proxy                      SMF proxy Grid used for generation             Goleta 125                 Big Sur 500 Center of mass location              35.153 N -120.985          35.097 N -121.904 (Xo, Yo)                             w                          w Width w (km)                          10.5                       10 Length b (km)                        7.45                       15 Thickness T (m)                      75                         235 Depth d (m) at center of             300 (1 00-400)             2600 mass Mean slope ~ of                      2                          4 failure surface (deg)
Azimuth 8 of SMF                     245                        255 movement (deg. true N)
Initial acceleration ao (m/s 2 )     0.14                       0.26 Maximum velocity Umax(m/s)           25.0                       51.9 Motion duration tr (s)               559.0                      635.4 Motion run out sr (km)               8.88                       21.04

PG&E Letter DCL-16-016 Enclosure 1 Table 3-17       Summary of RPMT Runup and Drawdown Results Far-Field (Distant)          Near-Field (Local)                                     Goleta Proxy SMF Tsunami with Seismic Tsunami              Seismic Tsunami          Goleta Proxy SMF Tsunami          Reduced Breakwater Evaluation (no CLB)
Reevaluation                  Reevaluation CLB                         CLB                            CLB       Reevaluation (SSZ)                         (HFS)
Max. Water Elevation in the Area of the Intake Structure     30.3 ft.      17.4 ft.(S)    34.9 ft.        1.3 ft. (S)      N/A         27.9 ft.( 4)               32.8 ft.
(HHWL)
Max. Runup Elevation Behind Intake Structurel 3 l        N/A           N/A           N/A             N/A            N/A          32.8 ft.                  62.3 ft.
(HHWL)
Combinedl 2l Drawdown
                                  -8.7 ft.      -9.2 ft.      -3.8 ft.          N/A         -8.7 ft.(G)    -15.7 ft.                 -15.7 ft.
Elevation Splash                              N/A          N/Al 1 l    60.32 ft.         N/Al 1l         N/A           N/Al 1 l                  N/A{ll             I All elevations are in NAVD88.
: 1. RPMT did not result in any splash due to the longer period waves that are seen in the model.
: 2. The CLB included effects from tsunami, storm waves, storm surge, and tide. Combinations stipulated in NUREG/CR-7046 do not combine the effects from tsunami, storm waves, storm surge, & tide. The RPMT combination includes tsunami, tide, and long-term sea level rise. See Section 3.9.
: 3. In cases where the water level is high enough to continue over the intake structure, the maximum elevation that is reached up the steep hill behind the intake structure is provided.
: 4. The HAWL value is reported because it is more limiting than the HHWL.
: 5. Water levels shown are in the front of the intake structure since levels were not high enough to flow over the top deck of the structure (i.e., less that elevation 20.4 ft. NAVD88 [17.5 ft. MSL]).
: 6. Even though there is no CLB for the Goleta Proxy SMF, it is compared to -8.7 ft. since this is the most-limiting CLB drawdown value.

PG&E Letter DCL-16-016 Enclosure 1 Table 3-18   Maximum Water Current Velocities and Impulse Forces for RPMTs Safety-Related SSC                    Water Velocity        Water Impulse Force ASW Ventilation Huts I 26.2 ft/s               0.86 kip/ft ASW Ventilation Snorkels Intake Structure Curtain Wall             18.0 ft/s                11.3 kip/ft ASW Forebay Ceiling                       18.0 ft/s               20.4 kip/ft        I Intake Structure Top Deck                 39.4 ftls                11.6 kip/ft
* The velocity and impulse force for the ASW ventilation snorkels are zero because they are not inundated by the RPMTs.

PG&E Letter DCL-16-016 Enclosure 1 Table 3-19     Potential Tsunami Debris
    #    Commodity                                            Weight Class       Material Type 1    Bar Racks                                                    3              Steel 2    Aux Salt Water Pump Screen Gate                              5              Steel 3    Screen Wash Pumps                                            5              Steel Traveling Screen Housing or Internal Parts (Outer 4                                                             2, 3, 4            Steel covers are fiberglass) 5    Control/office building                               1, 2, 3, 4,5     Masonry Concrete Masonry Intake Access Control & Security building cement 6                                                          1, 2, 3, 4, 5    Concrete, Wood, blocks, roofing material, interior commodities Steel Masonry Maintenance Machine Shop Building cement 7                                                          1, 2, 3, 4, 5    Concrete, Wood, blocks, roofing material, interior commodities Steel 8    Maintenance and Storage Sea Trains                   1, 2, 3, 4, 5, 6       Steel 9    Chlorination Tanks                                       4, 5, 6            Plastic 10    Security Fences and Gratings                             2, 3, 4            Steel 11    Security Guard Towers                                      5, 6          Wood, Steel 12    PVC Piping for Biolab (located on hillside)                  2              Plastic 13    Lighting/camera posts (permanently mounted)                  3              Steel Reinforced 14    Lighting stanchions (with concrete base)                     4 Concrete, Steel 15    Portable powered lighting carts                              4              Steel 16    Gantry Crane                                                 6              Steel 17    Movable Crane                                                6              Steel 18    Chemical Storage Tank                                    4, 5, 6            Plastic 19    Chemical Transferring Station                                5           Steel, Plastic 20    Moored Intake Cove Boats                                     5           Steel, Wood 21    Kelp Cutter Boat and Trailer                                 6              Steel 22    Intake Cove Docks                                       2, 3,4, 5           Wood Maintenance and operations vehicles (pickup 23                                                                15               Steel trucks) 24    Smaller (golf cart' vehicles for personnel transport         4              Steel 25    Employee and visitor personal vehicles                       5              Steel Reinforced 26    Spare Tribars for breakwater construction                    6 Concrete 27    Lumber/cribbing                                              1              Wood 28    Meteorologist/Shower/Offices- Building 123           1, 2, 3, 4, 5, 6       Wood 29    Lumber fence located near Building 123                       2              Wood 30    Lumber used as retaining walls.                              1              Wood Concrete block used as retaining walls directly to 31                                                                 1         Masonry Concrete east of intake protected area

PG&E Letter DCL-16-016 Enclosure 1
  #   Commodity                                        Weight Class       Material Type 32    'Porta Potties'                                        2                Plastic 33    Metal storage bins/dumpsters                          2, 3              Steel 34    Plastic storage bins                                   2                Plastic 2
35   Compressed air/welding/C0 cylinders                     1                Steel Portable commodities associated with plant operation and maintenance including 36                                                    1, 2, 3, 4, 5, 6    Steel, Wood commodities temporarily stored/staged for maintenance activities Machine shop tools (metal-working floor mounted 37                                                          4, 5              Steel tools)
Manmade and Natural items found in the 38                                                       1, 2, 3,4      Soil, Sand, Rock landscape of areas expected to be inundated 39    Navigation buoys                                       2                Plastic Reinforced 40   Concrete wheel chocks (for vehicle parking)             2 Concrete 41   Eyewash Station                                         2                Plastic 42   Ladders                                                 1                Steel 43   Sandbags                                                1          Soil, Sand, Rock 44   BBQs                                                    1                Steel 45   Yellow Flotation Devices                                1                Plastic 46   Small temporary building                                3                Steel Weight Classes are as follows:
1 < 100 lbs.
2 > 100 lbs. and < 500 lbs.
3 > 500 lbs. and < 1,000 lbs.
4 > 1,000 lbs. and < 2,000 lbs.
5 > 2,000 lbs. and < 10,000 lbs.
6 > 10,000 lbs.

PG&E Letter DCL-16-016 Enclosure 1 Table 3-20        Tsunami Debris Projectile Impact, Debris Damming, and Combined Forces Civil Commodity                Limiting RPMT              Limiting CLB                  Bounded/
Projectile Force         Tornado-Generated              Not Bounded Missile Force Intake Structure Curtain             4,188 kips                 44,206 kips                  Bounded Wall Intake Structure Top                 231.9 kips                 44,206 kips                  Bounded Deck ASW Fore bay Ceiling 1                    N/A                        N/A                         N/A ASW Ventilation Huts                  224.3 kips                 44,206 kips                  Bounded ASW Ventilation                           N/A                        N/A                         N/A Snorkels 2
: 1. The ASW forebay ceiling is an interior structural commodity. The ASW pump forebay draws seawater that enters under the curtain wall. As the height of the incoming wave exceeds the height of the bottom of the curtain wall (elevation -4.9 ft. NAVD88), floating projectiles would be excluded from entry to the ASW forebay. Projectiles in the flowstream for the tsunami at an elevation under the bottom of the curtain wall could enter the ASW forebay, but will not strike the forebay ceiling, located at elevation -0.7 ft. NAVD88, 4.2 feet above the bottom of the curtain wall, as they are not expected to have a velocity component after the forebay area is re-flooded after drawdown .
Therefore, projectile impact to the forebay ceiling is not considered a credible event.
: 2. The ASW ventilation snorkels are not inundated by the RPMT. The maximum inundation height at the ASW ventilation huts is 5.8 feet. The height of the ASW ventilation huts is 14.5 feet from the intake structure top deck. Therefore, a floating projectile (such as the kelp harvesting vessel) that has a profile above the maximum inundation height is insufficient height to impact the ASW ventilation snorkels.

PG&E Letter DCL-16-016 Enclosure 1 BASE  MAP FROM THE PORT SAN LUIS, CA (2012) USGS QUADRANGLE MAP.
0 :500' 1000' 2000' PROVIDED BY WWW.USGSSTORE.GOV. CONTOUR ELEVA110NS REFERENCE NAVD 88, CONTOURS ARE SHOWN IN FEET AT 40 FOOT INTERVALS.
Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 2-1 DCPP Site Location

PG&E Letter DCL-16-016 Enclosure 1 o.5 o:25 o   0.5 Mires 11::111::11-*
Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 2-2 Diablo Creek Watershed

PG&E Letter DCL-16-016 Enclosure 1 J<I' N
                                                                                         )5'N
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        +
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IJilt<r m Nrut h ~rc.an 1933 0          50 100 150 Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 3-1 Locations of Storms Used in LIP Determination

PG&E Letter DCL-16-016 Enclosure 1 Sn!JIIi R-Wrif,S JL )WH.' Ci
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Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 3-2a Locations of Doors, Safety and Non Safety-Related Structures, and Areas to the West of the Turbine and Buttress Buildings Evaluated for LIP

PG&E Letter DCL-16-016 Enclosure 1 I
I I
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-- ----                                                                                                                                                                 ;1-----------0 I
TURBINE       B L D G.
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                                                                                ~m1~                                                                                     !
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                                                                                                                                                                            - --------0 I                                                                                                                                                          I 1                                                                                                                                                 ~ DoorB U1 06-2 I                                                                                                           WE ST BUTTRESS                      I          I i
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-       DFO Transfer Piping Vaults  -    Doors    E:::::J Roll-Up Doors
* Diesel Fuel Oil Tank Vents Note: Doors BU104 and BU105 are located next to each other.
Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 3-2b Location and Identification of Commodities on the West of the Turbine Building

PG&E Letter DCL-16-016 Enclosure 1 Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 3-3 Maximum Water Depth from LIP (ft.)

PG&E Letter DCL-16-016 Enclosure 1 Diablo Creek General Storm AII-Seaon PMP 35
           .                                                                                                              -~
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0     6     12          18     24        3"0        36          42    48       54        60            66            72 Time (hours)
Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 3-4 Diablo Creek General Storm All-Season Cumulative PMP Values

PG&E Letter DCL-16-016 Enclosure 1 Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 3-5 DCPP Site Locations of PMF Inundation

PG&E Letter DCL-16-016 Enclosure 1
             ~ PMF Lirrit
             -   Retaining WaD
     -+  +
             - - FetchUne Diablo Creek Cross Sections
-+      ....               -                 +
   +                  +          +

PG&E Letter DCL-16-016 Enclosure 1 076 DIABLO CANYON, CA (6UOY)
AUGUST 1997
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Day of Month (UTC)
H:t p:l/o:l ip . u::sd .edul Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 3-7 Tropical Storm Ignacio and Resulting Significant Wave Heights at the DCPP Waverider Buoy(August20, 1997)

PG&E Letter DCL-16-016 Enclosure 1 Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 3-8 Locations of Analyzed NDBC Buoys Along the California Central Coast

PG&E Letter DCL-16-016 Enclosure 1 l-2 l l 0
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6                                                                      --- 46028
                                                                                 ***- 46215
                                                                               - - 46218 5
0 20 0         60       80             100               120       40         160        180          200 Return Period [Yea r Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 3-9 Return Periods for Significant Wave Heights at Analyzed NDBC Buoys Along the California Central Coast

PG&E Letter DCL-16-016 Enclosure 1 Bathyme:try : Central Coast - Datu1m : NiA.VD88 3.8982 3.8981 3.8981 3:8981                                                                                                  10 3.898 o:
3 .8979 3.8979                                                                                                -10 3.8979
                                                                                                       -20, 3.8978 3.8977
                                                                                                       -30 !
6.948 6.949 6.95 6 .951           6.952                    6 .953              6.954    )( 1 0~
Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 3-10 Maximum Crest Wave Level (m) at Various Observation Points at the DCPP Breakwaters (with SAWL)

PG&E Letter DCL-16-016 Enclosure 1 60 55 50 C'l
~ 45 z
~   40 35 30 25
    -220        -210        -200       -190        -180        -170          -160 -150      -140        -130           -120 Lon. E. (Deg.)
Acronyms: Alaska Subduction Zone (ASZ), Semidi Subduction Zone (SSZ), Kamchatka Subduction Zone (KSZ), Japan Subduction Zone (JSZ) .
Color scale denotes bathymetry (<0) and topography (> 0) in meter.
Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 3-11 Location of Various Tsunami Source Areas for DCPP

PG&E Letter DCL-16-016 Enclosure 1 o*o*N 36
                                                                             ~
                                                                                ")~;'~
                                                                                     ~~
                                                                                       ~
35 Explanation 0    Diablo Canyon Power Plant (DCPP) 1   Continental Shelf 2   Upper Continental Slope J   Lower Continental Slope 4   Upper Continental Rise PA Point Arguello                  PS Point Sal PB Point B~.Chon                   PSRPoint Sur PC Point Conception                SMI San Miguel Island PE Point Estero                    SRI Santa Rosa Island PPB Point Piedras Blancas          SCrl Santa Cruz Island 0    10   JJJ        QJ Kobmete r&
I I   I I  I  I I I   I 123' 0'0 W                     122' 0 '0W Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 3-12 Physiographic Features in the DCPP Area

PG&E Letter DCL-16-016 Enclosure 1 I
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CF - c asmalia ra!Jt zone E q:danati on                               HF- Hosgn fau lt tone 0 Diablo Canyon Pmver Pla nt (DCPP)            PS - Purisima structure SLBF- s, ta LUc. a Banks fault zone
- - Fa ult SLBF- Santa Lucia Banl<s fault zone- south
- - Rupture scen ari o                            SCF- SoLthv*Jest t . r.amel fau lt WBF - West Basin fault 0                JO I ilom eters Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 3-13 Fault Zones Used in the RPMT Modeling

PG&E Letter DCL-16-016 Enclosure 1 0
120&deg;00'   119, 30' n
CALIFORNIA CSlJ a
From Greene et al. (2006)
Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 3-14 Location of Goleta and Gaviota Slides

PG&E Letter DCL-16-016 Enclosure 1 Ex planation                       Notes :
                                       *1) Modified fmm G utmacl1er and Norm ark ( 1993 ).
** ~ ** Major fan valley               2) Offsl1ore base map dfrom NCOC/NCAA Coastal Relief MFV Monterey fan valley           OEM (NOGC, 2005) .
AFV Ascension fan valley      3) Onshore base map from U.S.G .S. 90-meter OEM .
MEFV Monterey East fan valley Headwall scarp of Sur Slide 0           50             100 Kilometers DCPP Diablo Canyon Power Plant                  I            I               I Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 3-15 Location of Sur Slide

PG&E Letter DCL-16-016 Enclosure 1 122"30'W        122"W     121"30'W        121"'ifll'     120"30'W StvlSB- Santa Maria Slope Break zone SSB- Sur St1elf Break zone                          Explanati on ACZ- Arguello-Conception zone SLBS -Santa Lucia Bank scarp zone              DCPP Diablo Canyon Power Plant LSC - Lower Slope Canyon zone SS L- Southern Santa Lucia Basin zone          D    Landslide source zones ENSZ - Escarpment-no rthem Sur zone ENZ- Escarpment-northern zone ECZ- Escarpment-central zone ESZ- Escarpment-southern zone 0              40            80 Ki lometers I               I              I Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 3-16 Landslide Source Zones Used in Previous Tsunami Analyses

PG&E Letter DCL-16-016 Enclosure 1 0
35.25
                                                                                            -100 35.2
                                                                                            -200
~35.15 0                                                                                         -300 z
  ~      35.1
-=~
"'C
~ 35.05
                                                                                            -400
*.;:                                                                                        -500
~          35
                                                                                            -600 34.95
                                                                                            -700
                                                                                            -800 121.2        121.1         121         120.9         120.8 Longitude (deg. West)
The black ellipse is thew =1 0.5 km by b = 7.45 km footprint of a 1.75 km3 slide on the slope, with center of mass located at 35.153N-120.985W. The black straight line is a transect in the direction of the steepest slope from DCPP in azimuth 8 = 245 deg. from North.
Bathymetry is color scale in meters.
Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 3-17 Goleta SMF Proxy Location and Bathymetry

PG&E Letter DCL-16-016 Enclosure 1 0
35.6
                                                                                            -500
                                                                                            -1000 35.4
-.....=
  ~ 35.2
                                                                                            -1500 z                                                                                           -2000 oil Q.)
"'0 Q.)     35
"'0                                                                                         -2500
  =
  ~
~                                                                                           -3000 34.8
                                                                                            -3500 34.6
                                                                                            -4000 34.4                                                                                -4500 122.6      122.4     122.2     122      121.8     121.6    121.4 Longitude (deg. West)
Black ellipses are thew= 10 km by b = 15 km footprint of 4.5 (or 10.5) km3 slides on the slope, with center of mass located at 35.097N-121.904W and 34.993N-121.872W, respectively. The black straight lines are transects in the direction of the steepest slope in azimuths 8 = 255 and 290 deg. from North, respectively. Bathymetry is color scale in meters.
Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 3-18 Big Sur SMF Proxy Location and Bathymetry

PG&E Letter DCL-16-016 Enclosure 1 El. 52.3 ft ---......,..,~--           Snorkels EI. 48.5 ft Intake Top Deck ~                            El. 34.9 ft                  ~ ASW Huts Ate
                    ~~
El. 20.4 ft Bar rack                ASW pump room curtain Wall ~
Forebay Forebay Ceiling                     El. -o.7 It El. -4.9 ft ---~
ASW Forebay El. -28.6 ft ---...-----~
I
     +-W Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 3-19 Elevation Profile of SSCs of Intake Structure (NAVD88)

PG&E Letter DCL-16-016 Enclosure 1 ASW Huts 1.1 ksf 1.3 ksf Intake Top Deck Forebay Ceiling 2.5 ksf --                                        0.8 ksf Curtain Wall
                                                   ~w Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 3-20 RPMT Hydrodynamic &
Hydrostatic Forces on the Intake Structure

PG&E Letter DCL-16-016 Enclosure 2 Page 1 of 5 Table of Changes to Diablo Canyon Power Plant Units 1 and 2 Flood Hazard Reevaluation Report Sections, Tables, and Figures Section,    Flooding Hazards Reanalysis Report,     Flooding Hazards Reanalysis Report, Reason for Change Table, Figure                  Revision 0                             Revision 1 Section 1.5    This section provides clarifications on A paragraph was added to describe use   Provides clarification on use of terminology used in the report.         of the terms current design basis (COB) terminology.
and current licensing basis (CLB) throughout the report.
A paragraph was added to describe use of the terms Pacific Gas and Electric (PG&E) Design Class I and safety-related throughout the report.
Sections       Define acronyms for Updated Final       Deleted acronyms definitions.           Editorial changes made 2.3.2, 2.3.2.1 Safety Analysis Report (UFSAR) and                                              because acronyms were current licensing basis.                                                        defined in newly added paragraph in Section 1.5.
Sections 2.2,  These sections referenced UFSAR         These sections were updated to          Reflects the most current 2.3.2.1,       Revision 21.                            reference UFSAR Revision 22.            UFSAR.
2.3.2.2, 2.3.2.3, 2.3.2.4, 2.3.2.5, 2.3.2.6.1, 2.3.2.6.2, 2.3.2.7, 2.3.2.8, 2.3.2. 12, 2.3.2. 13,                                                                                                                      I 2.3.2. 14, 2.3.3 3.3

PG&E Letter DCL-16-016 Enclosure 2 Page 2 of 5 Section,    Flooding Hazards Reanalysis Report,      Flooding Hazards Reanalysis Report, Reason for Change Table, Figure                  Revision 0                               Revision 1 Sections      These sections made reference to         Replaced the term safety-related with       Revised to be consistent with 2.3.2.1,      safety-related buildings or components   PG&E Design Class I.                        the terminology used in 2.3.2.2,                                                                                           UFSAR Revision 22.
2:3.2.11, 2.3.2.13, 2.3.3 Section 3.1.2 This section provided the cumulative     A sentence was added to address             Reflects more conservative depth of the 1-hour and 6-hour Ll P of   additional methods used in performing       assumptions used in the 4.5 and 5.9 inches, respectively.        the revised LIP modeling: FL0-20            revised LIP modeling.
models (locations and elevations) of the buildings and features were verified by     Editorial change made to site walkdowns.                             clarify that the values provided represent rainfall amount.
The cumulative depth was revised to clarify that the cumulative rainfall amount of the 1-hour and 6-hour LIP was 4.5 and 5.9 inches, respectively.
Section 3.1.3 This section presented the LIP           This section was revised to presentthe      Reflects revised Ll P modeling reevaluation results. Six topics and     updated LIP reevaluation results. Six       results.
their associated results were presented: topics and their associated results are (1) Frequency analysis results showed    presented:
the 90 percent confidence interval   (1) Frequency analysis results showed for 106 years return period varied       the 90 percent confidence interval between 3.62 and 2.86 inches.            for 106 years return period varied between 3.60 and 2.84 inches.
(2) Water depth above the door thresholds and areas to the west of  (2) Water depth above the door the turbine and buttress buildings       thresholds and areas to the west of varied between 0.09 ft. and 1.4 ft.,     the turbine and buttress buildings with five of the doors/areas showing     varied between 0. 05 ft. and 0. 68 ft.,
no inundation.                           with six of the doors/areas showing no inundation.

PG&E Letter DCL-16-016 Enclosure 2 Page 3 of 5 Section,    Flooding Hazards Reanalysis Report,         Flooding Hazards Reanalysis Report, Reason for Change Table, Figure                   Revision 0                                 Revision 1 (3) The duration of time dependent         (3) The duration of time dependent water depths varied between 0.00           water depths varied between 0.00 hours and 4.41 hours.                      hours and 7.60 hours.
I (4) Area A3 includes commodities           (4) Area A3 includes commodities related to the safety-related diesel       related to the safety-related diesel fuel oil transfer system. Area A3          fuel oil transfer system. Area A3 showed a water depth value of 0.13         showed a maximum water depth ft.                                        value of 0.21 ft.
(5) Maximum velocity values are less       (5) Maximum velocity values are less than 1 ft/sec for all but two              than 1 ft/sec for all commodities.
commodities listed on Table 3-5.
Area B 1 shows a maximum velocity      (6) The total associated effect is the of 1.16 ft/sec, however, this area is      force (per linear foot of surface) due proximate to the Unit 2 diesel             to hydrostatic and hydrodynamic generator air intake louvers, which        loading of the Ll P varied from 1 lb/ft.
are recessed and located behind a          to 35 lb/ft. for doors and areas security fence. Debris ingress to the      experiencing inundation.
louvers is not credible. Door 191-2 shows a maximum velocity of 1.02 ft/sec, sufficiently close to the 1 ft/sec threshold so as to safely                                                                                    I assume that debris loading will not be an issue for this door.
(6) The total associated effect is the force (per linear foot of surface) due to hydrostatic and hydrodynamic loading of the LIP varied from 0.03 lb/ft. to 21.51 lb/ft.
Section 4.1   This section compared current LIP          This section was revised to reflect the      Reflects revised LIP modeling   I results with reanalyzed Ll P results. The  updated reevaluated LIP water depth          results.

PG&E Letter OCL-16-016 Enclosure 2 Page 4 of 5 Section,    Flooding Hazards Reanalysis Report,       Flooding Hazards Reanalysis Report, Reason for Change Table, Figure                   Revision 0                                Revision 1 reevaluated LIP determined that the      above the door thresholds and areas to water depth above the door thresholds    the west of the turbine and buttress and areas to the west of the turbine and buildings, which varies between 0.05 ft.
buttress buildings varied between 0.09   and 0.68 ft., with six of the 46 ft. and 1.4 ft., with five of the 29     doors/areas showing no inundation, and doors/areas showing no inundation.       the duration of time dependent water The duration of time dependent water     depths, which varies between 0.00                                           I depths varied between 0.00 hours and     hours and 7.60 hours.
4.41 hours.                              The conclusion that the reevaluated LIP is not bounded by the current analysis                                      I I
did not change.
Section 4.5   This section made a comparison to the    This section was revised to clarify that  Aligns with the newly added COB.                                     the comparison is being made to the       clarification in Section 1.5.
COB/CLB.
Section 4.6   This section made a comparison to the    This section *was revised to clarify that Aligns with the newly added COB.                                     the comparison is being made to the       clarification in Section 1.5.
COB/CLB .
Section 7.0   This section contained a reference to    Reference PGE, 2013 was deleted and       Reflects the most current UFSAR Revision 21 as PGE, 2013.          a reference to UFSAR Revision 22 as       UFSAR.
PGE, 2015 was added .
Table 3-5     Table provided maximum water depth       Table numerical values were revised.      Reflects revised LIP modeling and flood duration for doors and area to Water depths range from 0.05 ft. - 0.68   results .
the West of the turbine building and     ft., with six doors showing no buttress buildings. Water depths
* inundation. The duration of time ranged from 0.09 ft.- 1.4 ft., with five dependent water depths vary between doors showing no inundation. The         0.00 hours and 7.60 hours.
duration of time dependent water depths varied between 0.00 hours and 4.41 hours.
Table 3-6     Table provided hydrodynamic and total    Table numerical values were revised.      Reflects revised LIP modeling associated affects resulting from a LIP  For doors and areas experiencing          results .
event. The total force ranged from 0.03  inundation, the total force ranges from 1 Ib./ft. - 21 .51 Ib./ft.                 lb./ft. - 35 lb./ft.

PG&E Letter DCL-16-016 Enclosure 2 Page 5 of 5 Section,   Flooding Hazards Reanalysis Report,      Flooding Hazards Reanalysis Report, Reason for Change Table, Figure                 Revision 0                               Revision 1 Table 3-7     Table included fitted precipitation      Table was revised to include fitted        Reflects revised Ll P results estimates and 90 percent confidence      precipitation estimates and 90 percent     and removes extraneous interval (CI) for return periods 2 years Cl for the 1 million year return period. return period information not through 1 million years. For a 1 million For a 1 million year return period, the 90 required to make a comparison year return period, the 90 percent Cl    percent Cl ranged from 2.84 inches to      to the National Research ranged from 2.86 inches to 3.62 inches   3.60 inches of precipitation.              Council values.
of precipitation.
Figure 3-2    Included figure                          Figure was replaced with Figure 3-2a.      Provides better understanding Detail in figure was increased to more     of LIP inundation results.
clearly show locations of doors, safety and nonsafety-related structures, and areas to the west of the turbine and buttress buildings evaluated for LIP.
Figure 3-2b   Figure new to Flooding Hazards           Figure was added to more clearly show      Provides better understanding Reanalysis Report, Revision 1            areas and commodities on the West          of LIP inundation results.
side of the turbine building.
Figure 3-3    Included figure                          Figure was replaced to reflect revised     Reflects revised Ll P modeling water depths near the power block          results.
structures.}}