View source for DCL-15-034, Final Response to Request for Information Pursuant to 10 CFR 50.54(f) Regarding Recommendation 2.1 Flooding. Part 2 of 2

{{Adams
| number = ML15070A606
| issue date = 03/11/2015
| title = Final 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-15-034
| document type = - No Document Type Applies
| page count = 53
| project = 
| stage = Response to RAI
}}

=Text=
{{#Wiki_filter:PG&E Letter DCL-15-034 Enclosure 1 6.0 ADDITIONAL ACTIONS None.
6-1

PG&E Letter DCL-15-034 Enclosure 1

==7.0 REFERENCES==

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7-1

PG&E Letter DCL-15-034 Enclosure 1 Gonzalez et al, 2009. Gonzalez F. 1., Geist E. L., Jaffe B., Kanoglu U., Mofjeld H., Synolakis C.
E., Titov V . V., Areas D., Bellormo D., Carlton D., Horning T., Johnson J., Newman J., Parsons T., Peters R., Peterson C., Priest G., Venturato A., Weber J., Womg F., and Yalciner, A.
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http://www.oce.uri.edu/-grilli/Grillietal CD2013.pdf Grilli et al, 2013b. Grilli, S. T., Harris, J. C., Tajalibakhsh, T., Masterlark, T. L., Kyriakopoulos, C., Kirby, J. T., and Shi F. "Numerical simulation of the 2011 Tohoku tsunami based on a new transient FEM co-seismic source: Comparison to far- and near-field observations." Pure and Applied Geophysics, 170, 1333-1359. 2013.
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Banihashemi S., Kirby J. T., Baxter C. D. P., Eggeling T., MaG., and Shi, F. "Modeling of SMF tsunami hazard along the upper US East Coast: Detailed impact around Ocean City, MD."
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Johnson, 2012. Johnson, S. Y. and Watt, J. T. "Influence of fault trend, bends, and convergence on shallow structure and geomorphology of the Hosgri strike-slip fault, offshore central California", Geosphere, 8(6), pp. 1632-1656. 2012.
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7-2

PG&E Letter DCL-15-034 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 Reevaluation Report (HRR)-
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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NOAA, 1999. National Oceanic and Atmospheric Administration, National Weather Service (NOAA). "Hydrometeorological Report No. 58, Probable Maximum Precipitation for California,"
Silver Spring, Maryland, 1999.
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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-15-034 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),"
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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.
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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-15-034 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.
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M., Wheeler, R. L., Wesson, R. L., Zeng, Y., Boyd, 0. S., Perkins, D. M., Luco, N., Field, E. H.,
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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-15-034 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:==
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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-15-034 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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7-7

PG&E Letter DCL-15-034 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 OCPJB Toial Adjustment DaPl-hoor Stiltion Nmue                     State     Lat          Lon     Year                                     [actor           IP OAKL.AJ"\lll SOUTH                 CA    31.7830     -122.1500   19!19       H           19    326         L3S           450 BEL.'illt HOTEL                    CA    34.0S-60    -HS.45SO    198.3                         3.00        1.4-0         4.2'0 OCE..~~SIDE                        CA    332560      -H7.3200    1993                    16   2.95         U9            4.W
!LAGUNA BEACH                       CA    33.5510     -117.80~0   199'7       12          ~    250          1.47          3.<iS
 'WHEElER GORGE             CA. 34.3610     -11'9383()  1M2.         2          12   2~~2         U-3           332 SA!."\f
   - - - -r...L'\RCOS TROUT         CA    3-U!SJO     -)i'9.SO!IO 1~95_        !          'IJ  2.15         1.4-S.        3.18 DOUlTON TiJ:N1'l"El
- - --              ---             CA    34.4650     -U9.70SO    1973        .2          11   2.15         1Jj           3.'()4 ST.'\.J.""-41J'iVOOD FIRE STATION  CA 34.4500
                                            -     -   -119.6830   198.3        9         29    2.40-1.19'         2-.SQ BOUlDER CREEK                       CA    .37.09'16   -!22.1668   1955        n          .24   2.20         1~9'          2. S~
NOJQQ!-ll                          CA    .34.534-0   -120.1780   2002        12         20    1.09         114           2.59 GONZALES.                          CA    365150      -DU10:0     199'4       H           10   :2.09        uo            2.42 SIGNAL HILL CA    33.8&0:0    -HS.1667    19g;s                   41   2.00         1.19          2.38 C_.\..m'ON CREEK                   CA    34.08.32    -H S.S4l1S  1~4-~                  22..
1.%         L2i           2.37 ARROYOSECO                          CA    3*63590     -12129{}0   1993        H           11   2.01         1.(}6         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 0.25                2.5 0 ..5              3.6 0.75                4.1 1-hour                 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-15-034 Enclosure 1 Table 3-4      Temporal Distributions of 15-Minute Incremental Point PMP at DCPP Site Front End         One-Third           Center        Two-Third             End Peaking           Peaking           Peaking         Peaking            Peaking Duration     I LIP*               ILIP             I LIP            ILIP             I LIP PLIP**            PLIP              PLIP            PLIP               PLIP (hours)       (in)               (in)              (in)            (in)             (in) 0.000      0.000       0.000    0.000    0.000   0.000      0.000 0.000    0.000   0.000     0.000 0.250      2.475       0.423    0.043    0.007   0.026      0.005 0.006    0.001   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 0.750      4.095       0.700    0.173    0.030   0.084      0.014 0.059    0.010   0.059     0.010 1.000      4.500       0.769    0.269    0.046   0.118      0.020 0.086    0.015   0.086     0.015 1.250      4.683       0.801    0.422    0.072   0.161      0.028 0.115    0.020   0.115     0.020 1.500      4.841       0.828    0.605    0.103   0.211      0.036 0.146    0.025   0.146     0.025 1.750      4.994       0.854    1.145    0.196   0.291      0.050 0.177    0.030   0.177     0.030 2.000      5.130       0.877    3.620    0.619   0.387      0.066 0.211    0.036   0.211     0.036 2.250      5.226       0.893    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      5.397       0.923    5.263    0.900   1.263      0.216 0.384    0.066   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      5.515       0.943    5.491    0.939   4.818      0.824 0.633    0.108   0.453     0.077 3.500      5.561       0.951    5.558    0.950   5.223      0.893 0.816    0.139   0.532     0.091 3.750      5.604       0.958    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   5.517      0.943 3.831    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   1.009     0.172 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 5.610    0.959   1.350     0.231 5.250      5.791       0.990    5.791    0.990   5.789      0.989 5.701    0.975   1.755     0.300 5.500      5.818       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     0.577 6.000      5.850       1.000    5.850    1.000 5.850        1.000 5.850    1.000   5.900     1.000
* ILIP =                       =
cumulative LIP;** PLIP Portion of cumulative LIP

PG&E Letter DCL-15-034 Enclosure 1 Table 3-5        Maximum LIP Flooding Parameters near the Doors and Areas to the West of the Turbine and Buttress Buildings No     Door/Unit     Door 11hr.       Grid No      Grid Elev.      MaxWSE          MaxWD          MaxWD2         Max No
* Elev. or Area                   (ft-PG&E       (ft-PG&E     (above grid (above Door        Duration Elev. (PG&E                        Local          Local      surface) ft lhr. or Area)     (hours)
Local Datum)                     Datum)         Datum)                       - Elev. ft (1,        (2)            (3)            (4)            (5)             (6)    (7) = (6) - (5) (8) = (6) - (3)    (9)
Turbine Building Unit 1: North West 1         A1            86.8           1034           86.58          86.73          0.15           -0.07        0.58 2         A2           86.5*           1177           86.57          86.59         0.05**           0.09        0.24 3         A3           86.5*           1634           86.53          86.63          0.10            0.13        0.17 4       101-1           86 .8          2302           86.85          86.99          0.14            0.19        0.26 5       102-1           86.8           1975           86.82          86.94          0.12            0.14        0.22 6       119-1           86.8           3689           86.67          87.09          0.42            0.29        0.87 7       122-1          86.8*     I 4622           86.54          87.12          0.58            0.32        3.42 8          c            86.8           3115           86.49          86.69          0.20           -0.11        0.00 Turbine Building Unit 2: South West 9         B1            86.8           6357           86.69          87.31          0.62            0.51        2.68 10         B2           86.5*     I 5352           86.77          86.77         0.05**           0.27        0.00 11         B3           86 .5*          3451           86.07          86.07         0.05**          -0.43        0.00 12       101-2           86.8           8059           86.65          87.39          0.74            0.59        2.73 13       102-2           86.8          7625            86.61          87.37          0.76            0.57        2.75 14       119-2           86.8           8729           86.77          87.46          0.69            0.66        2.43 15       122-2          86.8*          7860            86.65          87.48          0.83            0.68        2.76 Unit 1 -Auxiliary Building Area (Ventilation Building) 16       192-1           86.8          5200            87.43          87.48          0.05            0.68        0.21 17       191-1           86.8          7055            86.81          87.19          0.38            0.39        3.11 18       194-1           86.8          6427            86.65          87.14          0.48            0.34        1.10 Unit 2- Auxiliary Building Area (Ventilation Building) 19       192-2           86.8          7437           87.34           87.48          0.14            0.68        0.41 20       191-2          86.8*          11759          88.05            88.2          0.16             1.4        0.56 21       194-2           86.8          11281          86.81            87.5          0.69             0.7        1.94 Fuel Handling Building (East of Unit 1) 22       363-1          116.8          9691           116.48         116.66          0.18           -0.14        0.55 23       361-1          116.8          9682           116.72         116.91          0.19            0.11        0.59 24       360-1          116.8          9681           116.82         116.92          0.09            0.12        0.16 25       355-1          116.8          10601          116.87         117 .15         0.28            0.35        1.62 26       354-1          116.8          10599          116.96         117 .16         0.20            0.36        1.00 Fuel Handling Building (East of Unit 2) 27       360-2          116.8          11303          116.91         117.19          0.29            0.39        2.70 28       361-2          116.8          11539          116.8          117.19          0.39            0.39        4.41 29       363-2          116.8          12726          116.53         116.61          0.09           -0.19        0.26
: 1. Thr.-Eiev. -Threshold Elevation
: 2. Negative value reflects no LIP exceedance near the doors or areas
* Door/Unit Nos. are shown in Figure 3-2.
     ** Minimum ponding depth taken as 0.05 feet.

PG&E Letter DCL-15-034 Enclosure 1 Table 3-6         Hydrodynamic and Total Associated Effects Resulting from LIP Flood Event MaxWD                    Hydrostatic Load             Hydrodynamic Load Max Door/Unit    (above No                                Velocity   Pressure      Force    Pressure     Force   Total Force No
* grid (ft/s)     (lb/ft2)    (lblft)   (lb/ft2)    (lb/ft)    (lb/ft) ***
surface) ft Turbine Building Unit 1: North West 1           A1         0.15         0.28        9.36       0.70       0.15       0.02       0.72 2           A2        0.05**        0.13        3.74       0.11       0.03       0.00       0.11 3           A3         0.10         0.06        3.74       0.11       0.01       0.00       0.11 4          101-1       0.14         0.20        8.74       0.61       0.08       0.01       0.62 5          102-1       0.12         0.12        7.49       0.45       0.03       0.00       0.45 6          119-1       0.42         0.32       26.21       5 .50      0.20       0.08       5 .59 7          122-1       0.58         0.21       36.19      10.50       0.09       0.05      10.55 8            c         0.20         0.00        1.87       0.03       0.00       0.00       0.03 Turbine Building Unit 2: South West 9            B1        0.62         1.16       38.69      11.99       2.61       1.62      13.61 10            B2       0.05**        0.00        1.87       0.03       0.00       0.00       0.03 11            B3       0.05**        0.00        1.87       0.03       0.00       0.00       0.03 12          101-2       0.74         0.62        46.18     17.09       0.74       0.55      17.64 13          102-2       0.76         0.64       47.42      18.02       0.79       0.60      18.62 14          119-2       0.69         0.32       43.06      14.85       0.20       0.14      14.99 15          122-2       0.83         0.10       51.79      21.49       0.02       0.02      21.51 Unit 1 -Auxiliary Building Area (Ventilation Building) 16          192-1       0.05         0.35        3.12       0.08       0.24       0.01       0.09 17          191-1       0.38         0.80       23.71       4.51       1.24       0.47       4.98 18          194-1       0.48         0.45       29.95       7.19       0.39       0.19       7.38 Unit 2- Auxiliary Building Area (Ventilation Building) 19          192-2       0.14         0.12        8.74       0.61       0.03       0.00       0.62 20          191-2       0.16         1.02        9.98       0.80       2.02       0.32       1.12 21          194-2       0.69         0.37        43.06     14.85       0.27       0.18      15.04 Fuel Handling Building (East of Unit 1) 22          363-1       0.18         0.38        19.34      3.00       0.28       0.09       3.09 23          361-1       0.19         0.24        11.86      1.13       0.11       0.02       1.15 24          360-1       0.09         0.10        5.62       0.25       0.02       0.00       0.25 25          355-1       0.28         0.32       17.47       2.45       0.20       0.06       2.50 26          354-1       0.20         0.18        12.48      1.25       0.06       0.01       1.26 Fuel Handling Building (East of Unit 2) 27          360-2       0.29         0.10        18.10      2.62       0.02       0.01       2.63 28          361-2       0.39         0.14        24.34      4.75       0.04       0.01       4.76 29          363-2       0.09         0.16        5.62       0.25       0.05       0.00       0.26
* Door/Unit Nos. are shown in Figure 3-2.
**  Minimum ponding depth taken as 0.05 feet.
*** Total force is the sum of the hydrostatic load force and the hydrodynamic load force.

PG&E Letter DCL-15-034 Enclosure 1 Table 3-7        GEV Fitted Precipitation Estimates and 90&deg;/o Cl at DCPP Site Return Period,      2     5     10    25     50  100  200  500  1000 10,000 100,000 1,000,000 years Lower 0.48  0.67   0.79  0.96   1.08 1.21 1.34 1.51  1.64   2.09   2.55     2.86 90% MCS Upper 0.49  0.67   0.80  0.96   1.09 1.21 1.34 1.52  1.66   2.16   2.76     3.62 90% MCS GEV_Mean 0.49     0.67   0.80  0.96   1.08 1.21 1.34 1.52  1.65   2.13   2.64     3.19
* Units are inches calibrated for a one-hour maximum .

PG&E Letter DCL-15-034 Table 3-8General Storm PMP (Page 1 of 7)                               Enclosure 1 15-Minute Incremental General Storm PlvfP 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-15-034 Table 3-8General Storm PMP (Page 2 of 7)                                 Enclosure 1 15-Minute Incremental General Storm Pl\.1P 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 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          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-15-034 Table 3-8General Storm PMP (Page 3 of 7)                                Enclosure 1 15-Minute Incremental General Storm PJ\.1P 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-15-034 Table 3-BGeneral Storm PMP (Page 4 of 7)                               Enclosure 1 15-Minute Incremental General Storm PMP Depths (inches) for Five Ternporal 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-15-034 Table 3-BGeneral Storm PMP (Page 5 of 7)                               Enclosure 1 15-Minute Incremental General Storm PlvfP Depths (inches) for Five Ternporal 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-15-034 Table 3-8General Storm PMP (Page 6 of 7)                                 Enclosure 1 15-Minute Incremental General Storm Pl\.1P Depths (inches) for Five Temporal Distributions Time (hours)
One-Third         Center      Two-Thirds Front Pealcing                                             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-15-034 Table 3-BGeneral 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 Pealcing                                          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-15-034 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-15-034 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 Year  Month  Date  46011   4602.3    4602.8   462.15 462.18 46011   4602.3    4602.8   462.15  462.18    46011        4602.8     462.15    462.18  46011      4602.8   462.15     462.18 2.008   2. 2.4   6.99    7.42. 5.78     5.58   9.97  2.L05   2.0.00     19.05    2.0.00 2.0.00     2.2.8.0     2.10.8      2.2.5.2. 2.14.4   43.0       46.2. 30.5       57.9 2.008   2. 2.5   6.95    7.26      5.68     5.04    7.5  17.39   2.0.00     16.00    18.18  18.18      2.72..5     2.81.6      2.54.9   271.1     5.1       10.1      7.1        4.6 2.007  12. 4    5.05    5.73      5.92. 4.2. 7.37  19.05   2.0.00     19.05    2.0.00 2.0.00     2.72..6     2.75.1      2.54.3   2.67.3    8.6        9.5      5.2.       5.0 2.001   1     11    6.98    7.66      8.51      6.5   7.2.3 16.67   16.67      16.67    16.67  16.67                              2.69.9   2.93.6                        7.0        5.1 2.001   1     12. 7.04    6.67      6.95      5.6   7.2.1 16.67   16.67      16.67    16.67  16.67                              2.67.4   2.94.7                        8.6        4.3 2.007  12      5    5.62. 7.2.3     5.59     4.72   7.14  19.05   20.00      19.05    2.0.00 18.18      2.73.3      2.80.2. 2.51.0   2.66.1    7.5        6.5      7.5        4.1 2.004   2. 2.6   7.16    6.75      7.65     5.94   7.13  16.67   2.0.00     2.0.00   18.18  18.18                  2.59.3      2.64.2. 2.87.0              39.3     13.7        6.0 2.007   1      5    6.2.2. 6.66      6.92. 3.96   7.12. 17.39   16.67      17.39    18.18  16.67      2.99.3      311.0       2.64.8   305.5     9.4       13.5     11.7        8.8 2.008   1      5    8.62. 7.61      8.96     6.42   7.08  19.05   2.0.00     19.05    2.0.00 2.0.00     2.76.5      2.68.5      2.54.8   2.78.0   34.4       33.1     18.8       2.3.1 2.000  12. 2.2. 6.2.1   5.2.8     7.91     6.05    6.4  2.0.00  2.0.00     2.0.00   2.0.00 2.0.00                             2.61.8   2.83.9                        6.7        7.8 1999    4      4    6.64    6.58      7.72. 3.66   6.57  1250    14.2.9     14.2.9   15.38  15.38                              2.74.8   311.0                         5.5        3.4 1999    1     Z7    6.65    6.26       7.7     5.33   6.06  16.67   16.67      16.67    16.67  16.67                              269.8    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  2.0.00  2.0.00     2.0.00   2.0.00 18.18                              2.70.6   301.0                         6.9        5.8 1998   12. 1    6.2.7   6.71      7.44     5.33   5.78  2.0.00  2.0.00     2.0.00   2.0.00 18.18                              2.64.3   2.89.4                        6.5        6.2.
1999    1     2.6   4.2.2. 3.73      7.31     4.37   4.07  16.67   16.67      16.67    16.67  16.67                              2.73.5   302..8                        4.0        6.1 2.000  12. 2.3   7.2.1   6.78      7.2.7    6.12. 6.39  2.0.00  16.67      16.67    18.18  18.18                              2.66.1   2.88.3                        5.2.       3.4 2.001   5      2. 6.33    5.86      7.22     4.33   6.05  16.67   16.67      14.2.9   16.67  15.38                              272.4    305.5                         3.9        4.5 2.009  11      8    5.35    6.68      7.19     3.42. 6.37  19.05   2.0.00     17.39    18.18  18.18      317.5       317.5       2.65.3   307.5     7.2.       6.3      4.9        3.4 1998   11     2.6   4.92. 5.67      7.09     4.36   4.87  2.0.00  2.0.00     2.0.00   18.18  18.18                              2.69.5   2.93.2.                       5.2.       4.4 2.009  11      7    5.51    6.06      7.03     3.93   6.93  19.05   2.0.00     19.05    2.0.00 2.0.00     314.2.      317.8       269.6    305.4     8.6        3.0      4.6        6.3 2.008   5     2.2. 5.98    6.02.       7       3.7   6.82. 12..12. 12..50     12..90   13.33  13.33      318.3       316.0       2.77.3   315.1     4.6        3.6      3.9        4.1 2.008   1      6    7.19    7.14      6.14      4.4   5.77  17.39   16.67      17.39    18.18  18.18      2.98.6      2.93.9      2.61.4   2.96.6    5.1        6.1      4.7        3.9 1999    2. 17    7.13     5.4      5.35     4.15   5.55  20.00   2.0.00     2.0.00   2.0.00 2.0.00 L _ __ _
                                                                                                                                '---2.69.1_ ~1.8     ----             -
                                                                                                                                                                        ~2.           3.8 Wave Heights- meters Wave Direction - degrees

PG&E Letter DCL-15-034 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-15-034 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/Ku ril      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 submarine mass failure
** Original magnitude was Mw 7.0; increased magnitude was recommended by Ellsworth (2003)
*** Reported in literature. Tide gauge not yet installed.

PG&E Letter DCL-15-034 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 p 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 runout sr (km)               8.88                        21 .04

PG&E Letter DCL-15-034 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.      17.4ft.(S)     34.9 ft.        1.3 ft. (S)      N/A         27.9 ft.( 4 )              32.8 ft.
(HHWL}
Max. Runup Elevation Behind Intake Structure( 3 )        N/A           N/A           N/A             N/A            N/A          32.8 ft.                  62.3 ft.
(HHWL}
Combined! 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/A(l)      60.32 ft.         N/A! 1l         N/A           N/A(l)                    N/A! 1l 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-15-034 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 Intake Structure Top Deck                 39.4 ft/s                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-15-034 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                                                                5               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-15-034 Enclosure 1
  #   Commodity                                        Weight Class       Material Type 1
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-15-034 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 Forebay 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-15-034 Enclosure 1 BASE MAP FROM 11-IE PORT SAN LUIS, CA (2012) USGS QUADRANGLE MAP, 0
500' 1000' 2000' PROVIDED BY WWW.USGSSTORE.GOV. CONTOUR ELEVAllONS 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-15-034 Enclosure 1
: 0. 5 0:25 0   0.5-Miles Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 2-2 Diablo Creek Watershed

PG&E Letter DCL-15-034 Enclosure 1 11a*w                        trrw
~' l l 37'1l 5411 Bem ardrno
                                                                                               ).1'N 3J' Il Jl'll 17?'W                                                                    17"'N CoQnt.nate 5)S!Efll N                                                     Nl*t>*S EClu~J A111a OJ~ O::
        +
llil~1m llonh AIJ>!!rC<~n 1 83
              *-===-.:==-------======::::::1------Miles 0        50       100      150          200 Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 3-1 Locations of Storms Used in Ll P Determination

PG&E Letter DCL-15-034 Enclosure 1
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Orange = doors Blue= areas Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 3-2 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-15-034 Enclosure 1 WD 0.010- 0.050 0.601 - 0.800 1.001- 1200
  -      1.201 - 1.500
  -      1.501 - 2_500
  -      2.501 - 5.500 Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 3-3 Maximum Water Depth from LIP (ft.)

PG&E Letter DCL-15-034 Enclosure 1 Diablo Creek General Storm AII-Seaon PMP 35 -*
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0       6         12       18    24     30      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-15-034 Enclosure 1 Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 3-5 DCPP Site Locations of PMF Inundation

PG&E Letter DCL-15-034 Enclosure 1 0   45 90   180   270
                        ~ PMF Unit
                        -      Retaining WaR
    +       +     +
                        - - Fetch Une Diab lo Creek Cross Sections
+   +       +             ..!.       +           +           +
   +                      +          +           +           +
+                                    +           +          4
                                                            +
                                                            -+
Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 3-6 Critical Fetch Line from Wind Wave Analysis

PG&E Letter DCL-15-034 Enclosure 1 076 DIABLO CANYON. CA (6UOY~
AUGUST 1997
     ~~:t~~r-:~
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:1                         5                     u                      15                         21                        26                       31 Day of Month (UTC) t-ttp://cdip.u:=l.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 (August 20, 1997)

PG&E Letter DCL-15-034 Enclosure 1 cw 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-15-034 Enclosure 1 12 11 10
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4 0 20     "0 60        80               100                          120                40          160               180                200 Return Period [Year]
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-15-034 Enclosure 1 WGS 84 I UTI.! zone 1ON - PrG~cte<l   X : 694810.583 Y: 3897973.101   Bathymetry : Central Coast - Datum : NAVD88 30,-
3.8982 3.8981 20 '
3.8981 3.8981                                                                                                                                         10*
3.898 o:
3.8979 3.8979                                                                                                                                       -10 ,
3.8979
                                                                                                                                             -20:
3.8978 3.8977
                                                                                                                                             -301 6.948                       6.949       6.95                6.951          6.952                    6.953            6.954    X 105 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-15-034 Enclosure 1 60 55 50 0)
~ 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-15-034 Enclosure 1 123' 0'0'\'J                   122"0"0'\IV 121<o*o*w      120"0'0 '\'J O'O' N 30
                                                                                                      ~
                                                                                                        ~~,.~
                                                                                                            *~~
35' 0'0 Explanation 0   Diablo Canyon Power Plant (DCPP) 1  Continental Shelf 2  Upper Continental Slope 3  Lower Continental Slope 4  Upper Continental Rise PA Point Arguello                PS Point Sal PB Point Bl..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    ~0        40 K1bmelc rs I I  I  I  I I I I   1 123                                           12 1 o*o*w Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 3-12 Physiographic Features in the DCPP Area

PG&E Letter DCL-15-034 Enclosure 1
   +             -+-
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    +      +                     +      +
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CF - Casmalia ra _t zone Explanati on                         HF- Hosgli fault zo ne 0 Diablo Ca nyon Power P la nt (DCPP)    PS - Purisima structure SLBF - SZllta w o a Banks fa ult zone
- - Fault SLB F - Santa LUcia Banks f autt zone- south
- - Rupture scen ario                      SCF - Sm.ttJiwe st Charnel fault WBF - West Bas1n fault 0      10      ? Q ~< 1 J o m eters Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 3-13 Fault Zones Used in the RPMT Modeling

PG&E Letter DCL-15-034 Enclosure 1 12o*oo*                         0 119, 30' n
CALIFORNIA
                                                                                   ~
120&deg;30'                       120&deg;00'                     119"30' SCIF =Santa Cruz Island Fault           PPF =Pita Point Fault SSYF =South Santa Ynez Fault            ORF =Oak Ridge Fault NCSF =North Channel Slope Fault         SYF =Santa Ynez Fault a        RMF = Red Mountain Fault                MCT = Mid channel Trend 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-15-034 Enclosure 1 124"\111                           123"UV               122"\111                    121"\111 Ex planation                       Notes :
: 1) Modified from G utmacl1er and Norm ark ( 1993 ).
      .. ...... . Major fan valley                2) Offshore base map dfrorn NCDC/NCAA Coastal Relief MFV Monterey fan valley           OEM (NDGC, 2005).
AFV Ascension fan valley       3) Onshore base map from U .S.G .S . 90-meter OEM .
MEFV Montere~' East fan valley Headwall scarp of Sur Slide 0          50                   100 Kilometers DCPP     Diablo Canyon Power Plant                     I                               I Flooding Hazard Reevaluation Report Diablo Canyon Power Plant Figure 3-15 location of Sur Slide

PG&E Letter DCL-15-034 Enclosure 1 122"30'W        122"111/  121"30'W        121"111/       120"30'W SM SB- Santa Maria Slope Break zone SSB- Sur Shelf Break zone                          Explanation ACZ- Arguello-Conception zone SLBS -Santa Lucia Bank scarp zone             DCPP Diablo Canyon Power Plant LSC- Lower Slope Canyon zone SSL- Southern Santa Lucia Basin zone          CJ   Landslide source zones ENSZ- Escarpment-northern Sur zone ENZ- Escarpment-northern zone ECZ- Escarpment-central zone ESZ- Escarpment-southern zone 0            40             80 Kilometers 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-15-034 Enclosure 1 0
35.25
                                                                                           -100 35.2
                                                                                           -200
~35.15 J.o 0                                                                                        -300 z
  ~     35.1
  ~
"0                                                                                         -400
~ 35.05
.-:::=
~-        35
                                                                                           -500
                                                                                           -600 34.95
                                                                                           -700 34.9
                                                                                           -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-15-034 Enclosure 1 0
35.6
                                                                                         -500 35.4                                                                                -1000
.c
 ~ 35.2
                                                                                         -1500 z
 ~                                                                                       -2000
 ~
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 ~     35
"'0                                                                                      -2500
*..:=
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 ~
~                                                                                        -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 the w = 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-15-034 Enclosure 1 El. 52.3 ft       FO,U=        Snorkels El. 48.5 ft In~ke Top O&k ~
El. 34.9 ft
* I[ Air
                                                                             ~ASWHuts El. 20.4 ft                                                                        I Bar rack                ASW pump room Curtain Wall ~
Forebay Forebay Ceiling ]
El. -4.9 ft _ ___..,.i-.---1 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-15-034 Enclosure 1 ASW Huts Intake Top Deck 0.7 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

Enclosure 2 PG&E Letter DCL-15-034 Page 1 of 1 Regulatory Commitment Pacific Gas and Electric Company (PG&E) is making the following regulatory commitment (as defined by NEI 99-04) in this submittal:
Commitment                               Due Date PG&E has implemented, and will maintain, interim actions as set forth in Enclosure 1 until PG&E *has completed the           March 13, 2017 Integrated Assessment Report.}}