ML16349A175: Difference between revisions

From kanterella
Jump to navigation Jump to search
(Created page by program invented by StriderTol)
(Created page by program invented by StriderTol)
Line 15: Line 15:


=Text=
=Text=
{{#Wiki_filter:SeabrookStation,Unit1Table 1. Current Design Basis Flood Hazards for Use in the MSAMechanismStillwater Elevation Waves/ Runup ReferenceDesign Basis Hazard ElevationLocal Intense PrecipitationMaximum water surface elevation not crediting storm drainage system.19.9 ft NAVD88Minimal19.9 ft NAVD88FHRR Section 3.1Failure of Dams and Onsite Water Control/Storage StructuresNo Impact on the Site IdentifiedNo Impact on the Site IdentifiedNo Impact on the Site IdentifiedFHRR Section 3.3 and FHRR Table 5-1Streams and RiversPMP combined with tidal effectNo Impact on the Site IdentifiedNo Impact on the Site IdentifiedNo Impact on the Site IdentifiedFHRR Table 5-1, Note 1Storm SurgeSurge at Seawall14.8 ft NAVD8814.8 ft NAVD88FHRR Section 5.4 and FHRR Table 5-1Site ponding due to surge (waves overtopping seawall)20.2 ft NAVD88 0.8 ft21.0 ft NAVD88FHRR Section 5.4 and FHRR Table 5-1 SeicheNo Impact on the Site IdentifiedNo Impact on the Site IdentifiedNo Impact on the Site IdentifiedFHRR Table 5-1 TsunamiNo Impact on the Site IdentifiedNo Impact on the Site IdentifiedNo Impact on the Site IdentifiedFHRR Table 5-1Ice-Induced FloodingNo Impact on the Site IdentifiedNo Impact on the Site IdentifiedNo Impact on the Site IdentifiedFHRR Table 5-1 SeabrookStation,Unit1Table 1. Current Design Basis Flood Hazards for Use in the MSAMechanismStillwater Elevation Waves/ Runup ReferenceDesign Basis Hazard ElevationNote 1: Reported values are rounded to the nearest one-tenth of a foot.Channel Migrations/DiversionsNo Impact on the SIte IdentifiedNo Impact on the Site IdentifiedNo Impact on the Site IdentifiedFHRR Section 3.9Note 2: FHRR Section 5.4 (Surge) states that, with regard to the CLB "some minor overtopping is expected, with still water levels on the site not exceeding +20.23 ft-NAVD88 (+21.00 ft-Plant Datum). The overtopping could support minor wave activity that could conservatively result in a wave runup on building walls to +21.03 ft-NAVD88 (+21.8 ft-Plant Datum)."
{{#Wiki_filter:Seabrook Station, Unit 1 Table 1. Current Design Basis Flood Hazards for Use in the MSA Mechanism                Stillwater    Waves/         Design Basis              Reference Elevation      Runup               Hazard Elevation Local Intense Precipitation Maximum water surface                 19.9 ft     Minimal              19.9 ft         FHRR Section 3.1 elevation not crediting storm        NAVD88                          NAVD88 drainage system.
SeabrookStation,Unit1Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSAMechanismStillwater Elevation Waves/ RunupReevaluated Hazard Elevation ReferenceLocal Intense Precipitation20.7 ft NAVD88Minimal20.7 ft NAVD88Table 4-3 of FHRRPump House/Site-specific PMP - Point of Interest (POI) 1221.8 ft NAVD88Minimal21.8 ft NAVD88Table 4-3 of FHRRContainment Units 1/Site-specific
Streams and Rivers PMP combined with tidal effect      No Impact    No Impact          No Impact        FHRR Table 5-1, Note 1 on the Site  on the Site        on the Site Identified  Identified          Identified Failure of Dams and Onsite Water Control/Storage Structures No Impact   No Impact         No Impact   FHRR Section 3.3 and FHRR Table on the Site on the Site       on the Site               5-1 Identified  Identified          Identified Storm Surge Surge at Seawall                      14.8 ft                           14.8 ft FHRR Section 5.4 and FHRR Table NAVD88        Minimal            NAVD88                    5-1 Site ponding due to surge             20.2 ft       0.8 ft              21.0 ft FHRR Section 5.4 and FHRR Table (waves overtopping seawall)          NAVD88                          NAVD88                    5-1 Seiche No Impact    No Impact          No Impact           FHRR Table 5-1 on the Site on the Site       on the Site Identified  Identified          Identified Tsunami No Impact    No Impact          No Impact            FHRR Table 5-1 on the Site on the Site       on the Site Identified  Identified          Identified Ice-Induced Flooding No Impact   No Impact         No Impact           FHRR Table 5-1 on the Site on the Site       on the Site Identified  Identified          Identified


PMP - POI 5920.6 ft NAVD88Minimal20.6 ft NAVD88Table 4-3 of FHRRTurbine Building/Site-specific
Seabrook Station, Unit 1 Table 1. Current Design Basis Flood Hazards for Use in the MSA Mechanism                  Stillwater        Waves/        Design Basis              Reference Elevation        Runup              Hazard Elevation Channel Migrations/Diversions No Impact        No Impact          No Impact            FHRR Section 3.9 on the SIte      on the Site        on the Site Identified      Identified          Identified Note 1: Reported values are rounded to the nearest one-tenth of a foot.
Note 2: FHRR Section 5.4 (Surge) states that, with regard to the CLB some minor overtopping is expected, with still water levels on the site not exceeding +20.23 ft-NAVD88 (+21.00 ft-Plant Datum). The overtopping could support minor wave activity that could conservatively result in a wave runup on building walls to +21.03 ft-NAVD88 (+21.8 ft-Plant Datum)."


PMP - POI 5720.8 ft NAVD88Minimal20.8 ft NAVD88Table 4-3 of FHRRFuel Storage Building/Site-specific PMP - POI 1923.8 ft NAVD88Minimal23.8 ft NAVD88Table 4-3 of FHRRWaste Process Building/Site-specific PMP - POI 2520.9 ft NAVD88Minimal20.9 ft NAVD88Table 4-3 of FHRRAdministration Building/Site-specific PMP - POI 3620.3 ft NAVD88Minimal20.3 ft NAVD88Table 4-3 of FHRRCooling Tower/Site-specific PMP - POI 6925.1 ft NAVD88Minimal25.1 ft NAVD88Table 4-3 of FHRRDry Fuel Storage Pad/Site-specific PMP - POI 83Storm Surge17.8 ft NAVD88 5.6 ft23.4 ft NAVD88FHRR Table 5-1Seawall20.2 ft NAVD8820.2 ft NAVD88FHRR Table 4-3, FHRR Table 4-41, and FHRR Figure 4-9Surge+Wave Overtopping at Intake Building (POI 1)
Seabrook Station, Unit 1 Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSA Mechanism            Stillwater    Waves/          Reevaluated              Reference Elevation      Runup              Hazard Elevation Local Intense Precipitation Pump House/Site-specific PMP -     20.7 ft     Minimal              20.7 ft       Table 4-3 of FHRR Point of Interest (POI) 12        NAVD88                          NAVD88 Containment Units 1/Site-specific   21.8 ft     Minimal              21.8 ft       Table 4-3 of FHRR PMP - POI 59                      NAVD88                          NAVD88 Turbine Building/Site-specific     20.6 ft     Minimal              20.6 ft       Table 4-3 of FHRR PMP - POI 57                      NAVD88                          NAVD88 Fuel Storage Building/Site-         20.8 ft     Minimal              20.8 ft       Table 4-3 of FHRR specific PMP - POI 19              NAVD88                          NAVD88 Waste Process Building/Site-        23.8 ft     Minimal              23.8 ft       Table 4-3 of FHRR specific PMP - POI 25              NAVD88                          NAVD88 Administration Building/Site-       20.9 ft     Minimal              20.9 ft       Table 4-3 of FHRR specific PMP - POI 36              NAVD88                          NAVD88 Cooling Tower/Site-specific        20.3 ft     Minimal              20.3 ft       Table 4-3 of FHRR PMP - POI 69                      NAVD88                          NAVD88 Dry Fuel Storage Pad/Site-         25.1 ft     Minimal              25.1 ft       Table 4-3 of FHRR specific PMP - POI 83              NAVD88                          NAVD88 Storm Surge Seawall                            17.8 ft      5.6 ft             23.4 ft       FHRR Table 5-1 NAVD88                          NAVD88 Surge+Wave Overtopping at           20.2 ft                           20.2 ft FHRR Table 4-3, FHRR Table 4-41, Intake Building (POI 1)            NAVD88      Minimal            NAVD88        and FHRR Figure 4-9
SeabrookStation,Unit1Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSAMechanismStillwater Elevation Waves/ RunupReevaluated Hazard Elevation Reference20.0 ft NAVD8820.0 ft NAVD88FHRR Table 4-3, FHRR Table 4-41, and FHRR Figure 4-9Surge+Wave Overtopping at Pump House Building (POI 11)20.3 ft NAVD8820.3 ft NAVD88FHRR Table 4-3, FHRR Table 4-41, and FHRR Figure 4-9Surge+Wave Overtopping at Pump House Building (POI 9, 10, 12 and 13)20.4 ft NAVD8820.4 ft NAVD88FHRR Table 4-3, FHRR Table 4-41, and FHRR Figure 4-9Surge+Wave Overtopping at Pump House Building (POI 3 and 6)20.6 ft NAVD8820.6 ft NAVD88FHRR Table 4-3, FHRR Table 4-41, and FHRR Figure 4-9Surge+Wave Overtopping at Pump House Building (POI 7 and


8)20.7 ft NAVD8820.7 ft NAVD88FHRR Table 4-3, FHRR Table 4-41, and FHRR Figure 4-9Surge+Wave Overtopping at Pump House Building (POI 5 and 14)20.8 ft NAVD8820.8 ft NAVD88FHRR Table 4-3, FHRR Table 4-41, and FHRR Figure 4-9Surge+Wave Overtopping at Pump House Building (POI 4)20.2 ft NAVD8820.2 ft NAVD88FHRR Table 4-3, FHRR Table 4-41, and FHRR Figure 4-9Surge+Wave Overtopping (POI  
Seabrook Station, Unit 1 Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSA Mechanism            Stillwater    Waves/          Reevaluated              Reference Elevation      Runup              Hazard Elevation Surge+Wave Overtopping at        20.0 ft                          20.0 ft FHRR Table 4-3, FHRR Table 4-41, Pump House Building (POI 11)     NAVD88      Minimal            NAVD88        and FHRR Figure 4-9 Surge+Wave Overtopping at        20.3 ft                           20.3 ft FHRR Table 4-3, FHRR Table 4-41, Pump House Building (POI 9, 10,  NAVD88      Minimal            NAVD88        and FHRR Figure 4-9 12 and 13)
Surge+Wave Overtopping at         20.4 ft                          20.4 ft FHRR Table 4-3, FHRR Table 4-41, Pump House Building (POI 3 and  NAVD88      Minimal            NAVD88        and FHRR Figure 4-9 6)
Surge+Wave Overtopping at        20.6 ft                          20.6 ft FHRR Table 4-3, FHRR Table 4-41, Pump House Building (POI 7 and  NAVD88      Minimal            NAVD88        and FHRR Figure 4-9 8)
Surge+Wave Overtopping at        20.7 ft                           20.7 ft FHRR Table 4-3, FHRR Table 4-41, Pump House Building (POI 5 and  NAVD88      Minimal            NAVD88        and FHRR Figure 4-9 14)
Surge+Wave Overtopping at         20.8 ft                          20.8 ft FHRR Table 4-3, FHRR Table 4-41, Pump House Building (POI 4)     NAVD88      Minimal            NAVD88        and FHRR Figure 4-9 Surge+Wave Overtopping (POI      20.2 ft                           20.2 ft FHRR Table 4-3, FHRR Table 4-41,
: 15)                              NAVD88      Minimal            NAVD88        and FHRR Figure 4-9 Surge+Wave Overtopping at        20.3 ft                          20.3 ft FHRR Table 4-3, FHRR Table 4-41, Containment Unit 1 (POI 62)      NAVD88      Minimal            NAVD88        and FHRR Figure 4-9 Surge+Wave Overtopping at        20.5 ft                          20.5 ft FHRR Table 4-3, FHRR Table 4-41, Containment Unit 1 (POI 16 and  NAVD88      Minimal            NAVD88        and FHRR Figure 4-9 17)
Surge+Wave Overtopping at        20.6 ft                          20.6 ft FHRR Table 4-3, FHRR Table 4-41, Containment Unit 1 (POI 63)      NAVD88      Minimal            NAVD88        and FHRR Figure 4-9


15)20.3 ft NAVD8820.3 ft NAVD88FHRR Table 4-3, FHRR Table 4-41, and FHRR Figure 4-9Surge+Wave Overtopping at Containment Unit 1 (POI 62)20.5 ft NAVD8820.5 ft NAVD88FHRR Table 4-3, FHRR Table 4-41, and FHRR Figure 4-9Surge+Wave Overtopping at Containment Unit 1 (POI 16 and  
Seabrook Station, Unit 1 Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSA Mechanism              Stillwater    Waves/          Reevaluated              Reference Elevation      Runup              Hazard Elevation Surge+Wave Overtopping at        20.8 ft                          20.8 ft FHRR Table 4-3, FHRR Table 4-41, Containment Unit 1 (POI 61)     NAVD88      Minimal            NAVD88        and FHRR Figure 4-9 Surge+Wave Overtopping at        20.9 ft                          20.9 ft FHRR Table 4-3, FHRR Table 4-41, Containment Unit 1 (POI 60)      NAVD88      Minimal            NAVD88        and FHRR Figure 4-9 Surge+Wave Overtopping at        21.0 ft                           21.0 ft FHRR Table 4-3, FHRR Table 4-41, Containment Unit 1 (POI 59)      NAVD88      Minimal            NAVD88        and FHRR Figure 4-9 Surge+Wave Overtopping at         22.1 ft                          22.1 ft FHRR Table 4-3, FHRR Table 4-41, Containment Unit 1 (POI 18)     NAVD88      Minimal            NAVD88        and FHRR Figure 4-9 Surge+Wave Overtopping at        20.2 ft                          20.2 ft FHRR Table 4-3, FHRR Table 4-41, Waste Process Building (POI 21)  NAVD88      Minimal            NAVD88        and FHRR Figure 4-9 Surge+Wave Overtopping at        20.5 ft                           20.5 ft FHRR Table 4-3, FHRR Table 4-41, Waste Process Building (POI 22)  NAVD88      Minimal            NAVD88        and FHRR Figure 4-9 Surge+Wave Overtopping at        20.6 ft                          20.6 ft FHRR Table 4-3, FHRR Table 4-41, Waste Process Building (POI 23)  NAVD88      Minimal            NAVD88        and FHRR Figure 4-9 Surge+Wave Overtopping at         20.8 ft                          20.8 ft FHRR Table 4-3, FHRR Table 4-41, Waste Process Building (POI 27)  NAVD88      Minimal            NAVD88        and FHRR Figure 4-9 Surge+Wave Overtopping at        21.0 ft                          21.0 ft FHRR Table 4-3, FHRR Table 4-41, Waste Process Building (POI 24)  NAVD88      Minimal            NAVD88        and FHRR Figure 4-9 Surge+Wave Overtopping at        23.1 ft                          23.1 ft FHRR Table 4-3, FHRR Table 4-41, Waste Process Building (POI 26)  NAVD88      Minimal            NAVD88        and FHRR Figure 4-9


17)20.6 ft NAVD8820.6 ft NAVD88FHRR Table 4-3, FHRR Table 4-41, and FHRR Figure 4-9Surge+Wave Overtopping at Containment Unit 1 (POI 63)
Seabrook Station, Unit 1 Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSA Mechanism            Stillwater    Waves/         Reevaluated              Reference Elevation      Runup              Hazard Elevation Surge+Wave Overtopping at         24.6 ft                           24.6 ft FHRR Table 4-3, FHRR Table 4-41, Waste Process Building (POI 25)  NAVD88      Minimal            NAVD88        and FHRR Figure 4-9 Surge+Wave Overtopping at         20.2 ft                           20.2 ft FHRR Table 4-3, FHRR Table 4-41, Administration Building (POI 50) NAVD88      Minimal            NAVD88        and FHRR Figure 4-9 Surge+Wave Overtopping at         20.4 ft                           20.4 ft FHRR Table 4-3, FHRR Table 4-41, Administration Building (POI 49)  NAVD88      Minimal            NAVD88        and FHRR Figure 4-9 Surge+Wave Overtopping at         20.5 ft                           20.5 ft FHRR Table 4-3, FHRR Table 4-41, Administration Building (POI 31  NAVD88      Minimal            NAVD88        and FHRR Figure 4-9 and 48)
SeabrookStation,Unit1Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSAMechanismStillwater Elevation Waves/ RunupReevaluated Hazard Elevation Reference20.8 ft NAVD8820.8 ft NAVD88FHRR Table 4-3, FHRR Table 4-41, and FHRR Figure 4-9Surge+Wave Overtopping at Containment Unit 1 (POI 61)20.9 ft NAVD8820.9 ft NAVD88FHRR Table 4-3, FHRR Table 4-41, and FHRR Figure 4-9Surge+Wave Overtopping at Containment Unit 1 (POI 60)21.0 ft NAVD8821.0 ft NAVD88FHRR Table 4-3, FHRR Table 4-41, and FHRR Figure 4-9Surge+Wave Overtopping at Containment Unit 1 (POI 59)22.1 ft NAVD8822.1 ft NAVD88FHRR Table 4-3, FHRR Table 4-41, and FHRR Figure 4-9Surge+Wave Overtopping at Containment Unit 1 (POI 18)20.2 ft NAVD8820.2 ft NAVD88FHRR Table 4-3, FHRR Table 4-41, and FHRR Figure 4-9Surge+Wave Overtopping at Waste Process Building (POI 21)20.5 ft NAVD8820.5 ft NAVD88FHRR Table 4-3, FHRR Table 4-41, and FHRR Figure 4-9Surge+Wave Overtopping at Waste Process Building (POI 22)20.6 ft NAVD8820.6 ft NAVD88FHRR Table 4-3, FHRR Table 4-41, and FHRR Figure 4-9Surge+Wave Overtopping at Waste Process Building (POI 23)20.8 ft NAVD8820.8 ft NAVD88FHRR Table 4-3, FHRR Table 4-41, and FHRR Figure 4-9Surge+Wave Overtopping at Waste Process Building (POI 27)21.0 ft NAVD8821.0 ft NAVD88FHRR Table 4-3, FHRR Table 4-41, and FHRR Figure 4-9Surge+Wave Overtopping at Waste Process Building (POI 24)23.1 ft NAVD8823.1 ft NAVD88FHRR Table 4-3, FHRR Table 4-41, and FHRR Figure 4-9Surge+Wave Overtopping at Waste Process Building (POI 26)
Surge+Wave Overtopping at         20.6 ft                           20.6 ft FHRR Table 4-3, FHRR Table 4-41, Administration Building (POI 28,  NAVD88      Minimal            NAVD88        and FHRR Figure 4-9 36, 37 and 51)
SeabrookStation,Unit1Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSAMechanismStillwater Elevation Waves/ RunupReevaluated Hazard Elevation Reference24.6 ft NAVD8824.6 ft NAVD88FHRR Table 4-3, FHRR Table 4-41, and FHRR Figure 4-9Surge+Wave Overtopping at Waste Process Building (POI 25)20.2 ft NAVD8820.2 ft NAVD88FHRR Table 4-3, FHRR Table 4-41, and FHRR Figure 4-9Surge+Wave Overtopping at Administration Building (POI 50)20.4 ft NAVD8820.4 ft NAVD88FHRR Table 4-3, FHRR Table 4-41, and FHRR Figure 4-9Surge+Wave Overtopping at Administration Building (POI 49)20.5 ft NAVD8820.5 ft NAVD88FHRR Table 4-3, FHRR Table 4-41, and FHRR Figure 4-9Surge+Wave Overtopping at Administration Building (POI 31
Surge+Wave Overtopping at         20.7 ft                           20.7 ft FHRR Table 4-3, FHRR Table 4-41, Administration Building (POI 44,  NAVD88      Minimal            NAVD88        and FHRR Figure 4-9 45, 46 and 47)
Surge+Wave Overtopping at         20.8 ft                           20.8 ft FHRR Table 4-3, FHRR Table 4-41, Administration Building (POI 35, NAVD88      Minimal            NAVD88        and FHRR Figure 4-9 38 and 42)
Surge+Wave Overtopping at         20.9 ft                           20.9 ft FHRR Table 4-3, FHRR Table 4-41, Administration Building (POI 32  NAVD88      Minimal            NAVD88        and FHRR Figure 4-9 and 39)
Surge+Wave Overtopping at         21.0 ft                           21.0 ft FHRR Table 4-3, FHRR Table 4-41, Administration Building (POI 43) NAVD88      Minimal            NAVD88        and FHRR Figure 4-9 Surge+Wave Overtopping at         21.1 ft                           21.1 ft FHRR Table 4-3, FHRR Table 4-41, Administration Building (POI 33  NAVD88      Minimal            NAVD88        and FHRR Figure 4-9 and 41)


and 48)20.6 ft NAVD8820.6 ft NAVD88FHRR Table 4-3, FHRR Table 4-41, and FHRR Figure 4-9Surge+Wave Overtopping at Administration Building (POI 28, 36, 37 and 51)20.7 ft NAVD8820.7 ft NAVD88FHRR Table 4-3, FHRR Table 4-41, and FHRR Figure 4-9Surge+Wave Overtopping at Administration Building (POI 44, 45, 46 and 47)20.8 ft NAVD8820.8 ft NAVD88FHRR Table 4-3, FHRR Table 4-41, and FHRR Figure 4-9Surge+Wave Overtopping at Administration Building (POI 35, 38 and 42)20.9 ft NAVD8820.9 ft NAVD88FHRR Table 4-3, FHRR Table 4-41, and FHRR Figure 4-9Surge+Wave Overtopping at Administration Building (POI 32
Seabrook Station, Unit 1 Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSA Mechanism              Stillwater    Waves/          Reevaluated              Reference Elevation      Runup              Hazard Elevation Surge+Wave Overtopping at          21.2 ft                           21.2 ft FHRR Table 4-3, FHRR Table 4-41, Administration Building (POI 40)  NAVD88      Minimal            NAVD88        and FHRR Figure 4-9 Surge+Wave Overtopping at         21.3 ft                          21.3 ft FHRR Table 4-3, FHRR Table 4-41, Administration Building (POI 34)  NAVD88      Minimal            NAVD88        and FHRR Figure 4-9 Surge+Wave Overtopping at          24.3 ft                          24.3 ft FHRR Table 4-3, FHRR Table 4-41, Administration Building (POI 30)  NAVD88      Minimal            NAVD88        and FHRR Figure 4-9 Surge+Wave Overtopping at          20.4 ft                           20.4 ft FHRR Table 4-3, FHRR Table 4-41, Turbine Building (POI 58)        NAVD88      Minimal            NAVD88        and FHRR Figure 4-9 Surge+Wave Overtopping at         20.5 ft                          20.5 ft FHRR Table 4-3, FHRR Table 4-41, Turbine Building (POI 53)        NAVD88      Minimal            NAVD88        and FHRR Figure 4-9 Surge+Wave Overtopping at          20.6 ft                          20.6 ft FHRR Table 4-3, FHRR Table 4-41, Turbine Building (POI 52)        NAVD88      Minimal            NAVD88        and FHRR Figure 4-9 Surge+Wave Overtopping at          20.3 ft                           20.3 ft FHRR Table 4-3, FHRR Table 4-41, Cooling Tower (POI 65 and 66)    NAVD88      Minimal            NAVD88        and FHRR Figure 4-9 Surge+Wave Overtopping at         20.4 ft                          20.4 ft FHRR Table 4-3, FHRR Table 4-41, Cooling Tower (POI 64 and 72)     NAVD88      Minimal            NAVD88        and FHRR Figure 4-9 Surge+Wave Overtopping at          20.6 ft                           20.6 ft FHRR Table 4-3, FHRR Table 4-41, Cooling Tower (POI 73)            NAVD88      Minimal            NAVD88        and FHRR Figure 4-9 Surge+Wave Overtopping at         20.7 ft                          20.7 ft FHRR Table 4-3, FHRR Table 4-41, Cooling Tower (POI 74)            NAVD88      Minimal            NAVD88        and FHRR Figure 4-9


and 39)21.0 ft NAVD8821.0 ft NAVD88FHRR Table 4-3, FHRR Table 4-41, and FHRR Figure 4-9Surge+Wave Overtopping at Administration Building (POI 43)21.1 ft NAVD8821.1 ft NAVD88FHRR Table 4-3, FHRR Table 4-41, and FHRR Figure 4-9Surge+Wave Overtopping at Administration Building (POI 33
Seabrook Station, Unit 1 Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSA Mechanism                  Stillwater      Waves/         Reevaluated                Reference Elevation        Runup              Hazard Elevation Surge+Wave Overtopping at                 20.8 ft                             20.8 ft FHRR Table 4-3, FHRR Table 4-41, Cooling Tower (POI 71 and 75)             NAVD88          Minimal            NAVD88          and FHRR Figure 4-9 Surge+Wave Overtopping at                 20.9 ft                             20.9 ft FHRR Table 4-3, FHRR Table 4-41, Cooling Tower (POI 67)                   NAVD88          Minimal            NAVD88          and FHRR Figure 4-9 Surge+Wave Overtopping at                 21.0 ft                             21.0 ft FHRR Table 4-3, FHRR Table 4-41, Cooling Tower (POI 68 and 70)             NAVD88          Minimal            NAVD88          and FHRR Figure 4-9 Surge+Wave Overtopping at                 21.2 ft                             21.2 ft FHRR Table 4-3, FHRR Table 4-41, Cooling Tower (POI 69)                   NAVD88          Minimal            NAVD88          and FHRR Figure 4-9 Note 1: Reevaluated hazard mechanisms bounded by the current design basis (see Table 1) are not included in this table Note 2: Reported values are rounded to the nearest one-tenth of a foot.
 
Note 3: Storm surge elevations at locations other than the seawall reflect water elevations on the site as a result of waves overtopping the seawall and water flowing across the site. Staff added the resulting overtopping depths (FHRR Table 4-41) and ground elevations to compute the stillwater elevations at the POIs associated with site buildings as shown in FHRR Figure 4-9 and FHRR Figure 4-10. The PMSS ponding level (given as the wave-overtopping effected stillwater elevation in this table) exceeds that of the CDB. The licensee stated that the reevaluated wave runup on building walls can be expected to be somewhat more than that described in the CDB (FHRR Section 5.4).
and 41)
Note 4: To develop storm surge elevations at locations other than the seawall, staff sorted and grouped the stillwater elevation values by site building and then by stillwater elevation value. Staff developed table scenarios based on site building and stillwaver elevation groups at no finer than 0.1-ft increments .
SeabrookStation,Unit1Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSAMechanismStillwater Elevation Waves/ RunupReevaluated Hazard Elevation Reference21.2 ft NAVD8821.2 ft NAVD88FHRR Table 4-3, FHRR Table 4-41, and FHRR Figure 4-9Surge+Wave Overtopping at Administration Building (POI 40)21.3 ft NAVD8821.3 ft NAVD88FHRR Table 4-3, FHRR Table 4-41, and FHRR Figure 4-9Surge+Wave Overtopping at Administration Building (POI 34)24.3 ft NAVD8824.3 ft NAVD88FHRR Table 4-3, FHRR Table 4-41, and FHRR Figure 4-9Surge+Wave Overtopping at Administration Building (POI 30)20.4 ft NAVD8820.4 ft NAVD88FHRR Table 4-3, FHRR Table 4-41, and FHRR Figure 4-9Surge+Wave Overtopping at Turbine Building (POI 58)20.5 ft NAVD8820.5 ft NAVD88FHRR Table 4-3, FHRR Table 4-41, and FHRR Figure 4-9Surge+Wave Overtopping at Turbine Building (POI 53)20.6 ft NAVD8820.6 ft NAVD88FHRR Table 4-3, FHRR Table 4-41, and FHRR Figure 4-9Surge+Wave Overtopping at Turbine Building (POI 52)20.3 ft NAVD8820.3 ft NAVD88FHRR Table 4-3, FHRR Table 4-41, and FHRR Figure 4-9Surge+Wave Overtopping at Cooling Tower (POI 65 and 66)20.4 ft NAVD8820.4 ft NAVD88FHRR Table 4-3, FHRR Table 4-41, and FHRR Figure 4-9Surge+Wave Overtopping at Cooling Tower (POI 64 and 72)20.6 ft NAVD8820.6 ft NAVD88FHRR Table 4-3, FHRR Table 4-41, and FHRR Figure 4-9Surge+Wave Overtopping at Cooling Tower (POI 73)20.7 ft NAVD8820.7 ft NAVD88FHRR Table 4-3, FHRR Table 4-41, and FHRR Figure 4-9Surge+Wave Overtopping at Cooling Tower (POI 74)
Note 5: With respect to storm surge elevations at locations other than the seawall, the licensee stated in FHRR Table 4- 3 that it is apparent that the stated WSEL for POI 30 is not the general surface elevation of the floodwater in that location, particularly given the minimal flood depth. Local topography and nearby POIs 31 and 32 should be referenced to determine a reasonable, conservative flooding level for this point.
SeabrookStation,Unit1Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSAMechanismStillwater Elevation Waves/ RunupReevaluated Hazard Elevation Reference Note : Reevaluated hazard mechanisms bounded by the cu rrent design basis (se e Table 1) are not included in this table Note : Reported values a re rounded to the nearest o ne-tenth of a foot.20.8 ft NAVD8820.8 ft NAVD88FHRR Table 4-3, FHRR Table 4-41, and FHRR Figure 4-9Surge+Wave Overtopping at Cooling Tower (POI 71 and 75)20.9 ft NAVD8820.9 ft NAVD88FHRR Table 4-3, FHRR Table 4-41, and FHRR Figure 4-9Surge+Wave Overtopping at Cooling Tower (POI 67)21.0 ft NAVD8821.0 ft NAVD88FHRR Table 4-3, FHRR Table 4-41, and FHRR Figure 4-9Surge+Wave Overtopping at Cooling Tower (POI 68 and 70)21.2 ft NAVD8821.2 ft NAVD88FHRR Table 4-3, FHRR Table 4-41, and FHRR Figure 4-9Surge+Wave Overtopping at Cooling Tower (POI 69)
Note 6: With respect to storm surge elevations at locations other than the seawall, the licensee stated in FHRR Table 4- 41 that POI 29 is located on top of the RHR vault roof; therefore, flood depths do not accumulate because the RHR Vault roof is higher than the maximum flood water levels in the area. The licensee does not provide the definition of RHR within the FHRR.
Note 3: Storm surge elevations at locations othe r th an the seawall reflec t water elevations on the site a s a result of waves overtopping the seawall and water flo wing across the site.
Note 7: Values reported for local intense precipitation are representative values for each building}}
Staff a dded the resulting overtopping depths (FHRR Table 4-41) and ground elevations to com pute the st illwater elevations at t he POIs assoc iated with sit e buildings as shown in FH RR Figure 4-9 and FHRR Figure 4-10. The PMSS ponding level (given as the wave-overtopping effected stillwater elevation in this table) exceeds that of the CDB. The licensee stated that the reevaluated wave runup o n building walls can be expected to be somewhat more than that described in the CDB (FHRR Section 5.4).
Note: To develop storm surge elevations at locations other than the seawall, staff sorted and grouped the s tillwater elevation values by site building and then by stillwater elevation value. Staff developed table scenarios based on site building and stillwaver elevation groups at no finer than 0.1-ft increments .
Note: With respect to storm surge elevations at location s other than the seawall, the licensee stated in FHRR Table 4-3 that "it is apparent that t he s tated WSEL for POI 30 i s not the general surface elevation of the floodwater in that location, particularly give n th e minimal flood depth. Local topography and nearby POIs 31 and 32 should be referenced to determine a reasonable, conservative flooding level for this point."
Note: With respect to storm surge elevations at location s other than the seawall, the licensee stated in FHRR Table 4-41 that "POI 29 is located on top of t he RHR vault roof; therefore, f lood depths do not accumulate becaus e t he RHR Vault roof is higher than the m aximum flood water l evels in the area." The licensee does n ot provide the definition of RHR wit hin the FHRR.
Note: Values reported fo r local intense precipit ation are representative values fo r eac h b uilding}}

Revision as of 10:20, 30 October 2019

MSFHI - Tables 1 and 2--Final 12-21-16
ML16349A175
Person / Time
Site: Seabrook NextEra Energy icon.png
Issue date: 12/21/2016
From: Bensi M
NRC/NRO/DSEA/RHMB
To:
Willingham M
References
Download: ML16349A175 (7)
v • d • e


Text

Seabrook Station, Unit 1 Table 1. Current Design Basis Flood Hazards for Use in the MSA Mechanism Stillwater Waves/ Design Basis Reference Elevation Runup Hazard Elevation Local Intense Precipitation Maximum water surface 19.9 ft Minimal 19.9 ft FHRR Section 3.1 elevation not crediting storm NAVD88 NAVD88 drainage system.

Streams and Rivers PMP combined with tidal effect No Impact No Impact No Impact FHRR Table 5-1, Note 1 on the Site on the Site on the Site Identified Identified Identified Failure of Dams and Onsite Water Control/Storage Structures No Impact No Impact No Impact FHRR Section 3.3 and FHRR Table on the Site on the Site on the Site 5-1 Identified Identified Identified Storm Surge Surge at Seawall 14.8 ft 14.8 ft FHRR Section 5.4 and FHRR Table NAVD88 Minimal NAVD88 5-1 Site ponding due to surge 20.2 ft 0.8 ft 21.0 ft FHRR Section 5.4 and FHRR Table (waves overtopping seawall) NAVD88 NAVD88 5-1 Seiche No Impact No Impact No Impact FHRR Table 5-1 on the Site on the Site on the Site Identified Identified Identified Tsunami No Impact No Impact No Impact FHRR Table 5-1 on the Site on the Site on the Site Identified Identified Identified Ice-Induced Flooding No Impact No Impact No Impact FHRR Table 5-1 on the Site on the Site on the Site Identified Identified Identified

Seabrook Station, Unit 1 Table 1. Current Design Basis Flood Hazards for Use in the MSA Mechanism Stillwater Waves/ Design Basis Reference Elevation Runup Hazard Elevation Channel Migrations/Diversions No Impact No Impact No Impact FHRR Section 3.9 on the SIte on the Site on the Site Identified Identified Identified Note 1: Reported values are rounded to the nearest one-tenth of a foot.

Note 2: FHRR Section 5.4 (Surge) states that, with regard to the CLB some minor overtopping is expected, with still water levels on the site not exceeding +20.23 ft-NAVD88 (+21.00 ft-Plant Datum). The overtopping could support minor wave activity that could conservatively result in a wave runup on building walls to +21.03 ft-NAVD88 (+21.8 ft-Plant Datum)."

Seabrook Station, Unit 1 Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSA Mechanism Stillwater Waves/ Reevaluated Reference Elevation Runup Hazard Elevation Local Intense Precipitation Pump House/Site-specific PMP - 20.7 ft Minimal 20.7 ft Table 4-3 of FHRR Point of Interest (POI) 12 NAVD88 NAVD88 Containment Units 1/Site-specific 21.8 ft Minimal 21.8 ft Table 4-3 of FHRR PMP - POI 59 NAVD88 NAVD88 Turbine Building/Site-specific 20.6 ft Minimal 20.6 ft Table 4-3 of FHRR PMP - POI 57 NAVD88 NAVD88 Fuel Storage Building/Site- 20.8 ft Minimal 20.8 ft Table 4-3 of FHRR specific PMP - POI 19 NAVD88 NAVD88 Waste Process Building/Site- 23.8 ft Minimal 23.8 ft Table 4-3 of FHRR specific PMP - POI 25 NAVD88 NAVD88 Administration Building/Site- 20.9 ft Minimal 20.9 ft Table 4-3 of FHRR specific PMP - POI 36 NAVD88 NAVD88 Cooling Tower/Site-specific 20.3 ft Minimal 20.3 ft Table 4-3 of FHRR PMP - POI 69 NAVD88 NAVD88 Dry Fuel Storage Pad/Site- 25.1 ft Minimal 25.1 ft Table 4-3 of FHRR specific PMP - POI 83 NAVD88 NAVD88 Storm Surge Seawall 17.8 ft 5.6 ft 23.4 ft FHRR Table 5-1 NAVD88 NAVD88 Surge+Wave Overtopping at 20.2 ft 20.2 ft FHRR Table 4-3, FHRR Table 4-41, Intake Building (POI 1) NAVD88 Minimal NAVD88 and FHRR Figure 4-9

Seabrook Station, Unit 1 Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSA Mechanism Stillwater Waves/ Reevaluated Reference Elevation Runup Hazard Elevation Surge+Wave Overtopping at 20.0 ft 20.0 ft FHRR Table 4-3, FHRR Table 4-41, Pump House Building (POI 11) NAVD88 Minimal NAVD88 and FHRR Figure 4-9 Surge+Wave Overtopping at 20.3 ft 20.3 ft FHRR Table 4-3, FHRR Table 4-41, Pump House Building (POI 9, 10, NAVD88 Minimal NAVD88 and FHRR Figure 4-9 12 and 13)

Surge+Wave Overtopping at 20.4 ft 20.4 ft FHRR Table 4-3, FHRR Table 4-41, Pump House Building (POI 3 and NAVD88 Minimal NAVD88 and FHRR Figure 4-9 6)

Surge+Wave Overtopping at 20.6 ft 20.6 ft FHRR Table 4-3, FHRR Table 4-41, Pump House Building (POI 7 and NAVD88 Minimal NAVD88 and FHRR Figure 4-9 8)

Surge+Wave Overtopping at 20.7 ft 20.7 ft FHRR Table 4-3, FHRR Table 4-41, Pump House Building (POI 5 and NAVD88 Minimal NAVD88 and FHRR Figure 4-9 14)

Surge+Wave Overtopping at 20.8 ft 20.8 ft FHRR Table 4-3, FHRR Table 4-41, Pump House Building (POI 4) NAVD88 Minimal NAVD88 and FHRR Figure 4-9 Surge+Wave Overtopping (POI 20.2 ft 20.2 ft FHRR Table 4-3, FHRR Table 4-41,

15) NAVD88 Minimal NAVD88 and FHRR Figure 4-9 Surge+Wave Overtopping at 20.3 ft 20.3 ft FHRR Table 4-3, FHRR Table 4-41, Containment Unit 1 (POI 62) NAVD88 Minimal NAVD88 and FHRR Figure 4-9 Surge+Wave Overtopping at 20.5 ft 20.5 ft FHRR Table 4-3, FHRR Table 4-41, Containment Unit 1 (POI 16 and NAVD88 Minimal NAVD88 and FHRR Figure 4-9 17)

Surge+Wave Overtopping at 20.6 ft 20.6 ft FHRR Table 4-3, FHRR Table 4-41, Containment Unit 1 (POI 63) NAVD88 Minimal NAVD88 and FHRR Figure 4-9

Seabrook Station, Unit 1 Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSA Mechanism Stillwater Waves/ Reevaluated Reference Elevation Runup Hazard Elevation Surge+Wave Overtopping at 20.8 ft 20.8 ft FHRR Table 4-3, FHRR Table 4-41, Containment Unit 1 (POI 61) NAVD88 Minimal NAVD88 and FHRR Figure 4-9 Surge+Wave Overtopping at 20.9 ft 20.9 ft FHRR Table 4-3, FHRR Table 4-41, Containment Unit 1 (POI 60) NAVD88 Minimal NAVD88 and FHRR Figure 4-9 Surge+Wave Overtopping at 21.0 ft 21.0 ft FHRR Table 4-3, FHRR Table 4-41, Containment Unit 1 (POI 59) NAVD88 Minimal NAVD88 and FHRR Figure 4-9 Surge+Wave Overtopping at 22.1 ft 22.1 ft FHRR Table 4-3, FHRR Table 4-41, Containment Unit 1 (POI 18) NAVD88 Minimal NAVD88 and FHRR Figure 4-9 Surge+Wave Overtopping at 20.2 ft 20.2 ft FHRR Table 4-3, FHRR Table 4-41, Waste Process Building (POI 21) NAVD88 Minimal NAVD88 and FHRR Figure 4-9 Surge+Wave Overtopping at 20.5 ft 20.5 ft FHRR Table 4-3, FHRR Table 4-41, Waste Process Building (POI 22) NAVD88 Minimal NAVD88 and FHRR Figure 4-9 Surge+Wave Overtopping at 20.6 ft 20.6 ft FHRR Table 4-3, FHRR Table 4-41, Waste Process Building (POI 23) NAVD88 Minimal NAVD88 and FHRR Figure 4-9 Surge+Wave Overtopping at 20.8 ft 20.8 ft FHRR Table 4-3, FHRR Table 4-41, Waste Process Building (POI 27) NAVD88 Minimal NAVD88 and FHRR Figure 4-9 Surge+Wave Overtopping at 21.0 ft 21.0 ft FHRR Table 4-3, FHRR Table 4-41, Waste Process Building (POI 24) NAVD88 Minimal NAVD88 and FHRR Figure 4-9 Surge+Wave Overtopping at 23.1 ft 23.1 ft FHRR Table 4-3, FHRR Table 4-41, Waste Process Building (POI 26) NAVD88 Minimal NAVD88 and FHRR Figure 4-9

Seabrook Station, Unit 1 Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSA Mechanism Stillwater Waves/ Reevaluated Reference Elevation Runup Hazard Elevation Surge+Wave Overtopping at 24.6 ft 24.6 ft FHRR Table 4-3, FHRR Table 4-41, Waste Process Building (POI 25) NAVD88 Minimal NAVD88 and FHRR Figure 4-9 Surge+Wave Overtopping at 20.2 ft 20.2 ft FHRR Table 4-3, FHRR Table 4-41, Administration Building (POI 50) NAVD88 Minimal NAVD88 and FHRR Figure 4-9 Surge+Wave Overtopping at 20.4 ft 20.4 ft FHRR Table 4-3, FHRR Table 4-41, Administration Building (POI 49) NAVD88 Minimal NAVD88 and FHRR Figure 4-9 Surge+Wave Overtopping at 20.5 ft 20.5 ft FHRR Table 4-3, FHRR Table 4-41, Administration Building (POI 31 NAVD88 Minimal NAVD88 and FHRR Figure 4-9 and 48)

Surge+Wave Overtopping at 20.6 ft 20.6 ft FHRR Table 4-3, FHRR Table 4-41, Administration Building (POI 28, NAVD88 Minimal NAVD88 and FHRR Figure 4-9 36, 37 and 51)

Surge+Wave Overtopping at 20.7 ft 20.7 ft FHRR Table 4-3, FHRR Table 4-41, Administration Building (POI 44, NAVD88 Minimal NAVD88 and FHRR Figure 4-9 45, 46 and 47)

Surge+Wave Overtopping at 20.8 ft 20.8 ft FHRR Table 4-3, FHRR Table 4-41, Administration Building (POI 35, NAVD88 Minimal NAVD88 and FHRR Figure 4-9 38 and 42)

Surge+Wave Overtopping at 20.9 ft 20.9 ft FHRR Table 4-3, FHRR Table 4-41, Administration Building (POI 32 NAVD88 Minimal NAVD88 and FHRR Figure 4-9 and 39)

Surge+Wave Overtopping at 21.0 ft 21.0 ft FHRR Table 4-3, FHRR Table 4-41, Administration Building (POI 43) NAVD88 Minimal NAVD88 and FHRR Figure 4-9 Surge+Wave Overtopping at 21.1 ft 21.1 ft FHRR Table 4-3, FHRR Table 4-41, Administration Building (POI 33 NAVD88 Minimal NAVD88 and FHRR Figure 4-9 and 41)

Seabrook Station, Unit 1 Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSA Mechanism Stillwater Waves/ Reevaluated Reference Elevation Runup Hazard Elevation Surge+Wave Overtopping at 21.2 ft 21.2 ft FHRR Table 4-3, FHRR Table 4-41, Administration Building (POI 40) NAVD88 Minimal NAVD88 and FHRR Figure 4-9 Surge+Wave Overtopping at 21.3 ft 21.3 ft FHRR Table 4-3, FHRR Table 4-41, Administration Building (POI 34) NAVD88 Minimal NAVD88 and FHRR Figure 4-9 Surge+Wave Overtopping at 24.3 ft 24.3 ft FHRR Table 4-3, FHRR Table 4-41, Administration Building (POI 30) NAVD88 Minimal NAVD88 and FHRR Figure 4-9 Surge+Wave Overtopping at 20.4 ft 20.4 ft FHRR Table 4-3, FHRR Table 4-41, Turbine Building (POI 58) NAVD88 Minimal NAVD88 and FHRR Figure 4-9 Surge+Wave Overtopping at 20.5 ft 20.5 ft FHRR Table 4-3, FHRR Table 4-41, Turbine Building (POI 53) NAVD88 Minimal NAVD88 and FHRR Figure 4-9 Surge+Wave Overtopping at 20.6 ft 20.6 ft FHRR Table 4-3, FHRR Table 4-41, Turbine Building (POI 52) NAVD88 Minimal NAVD88 and FHRR Figure 4-9 Surge+Wave Overtopping at 20.3 ft 20.3 ft FHRR Table 4-3, FHRR Table 4-41, Cooling Tower (POI 65 and 66) NAVD88 Minimal NAVD88 and FHRR Figure 4-9 Surge+Wave Overtopping at 20.4 ft 20.4 ft FHRR Table 4-3, FHRR Table 4-41, Cooling Tower (POI 64 and 72) NAVD88 Minimal NAVD88 and FHRR Figure 4-9 Surge+Wave Overtopping at 20.6 ft 20.6 ft FHRR Table 4-3, FHRR Table 4-41, Cooling Tower (POI 73) NAVD88 Minimal NAVD88 and FHRR Figure 4-9 Surge+Wave Overtopping at 20.7 ft 20.7 ft FHRR Table 4-3, FHRR Table 4-41, Cooling Tower (POI 74) NAVD88 Minimal NAVD88 and FHRR Figure 4-9

Seabrook Station, Unit 1 Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSA Mechanism Stillwater Waves/ Reevaluated Reference Elevation Runup Hazard Elevation Surge+Wave Overtopping at 20.8 ft 20.8 ft FHRR Table 4-3, FHRR Table 4-41, Cooling Tower (POI 71 and 75) NAVD88 Minimal NAVD88 and FHRR Figure 4-9 Surge+Wave Overtopping at 20.9 ft 20.9 ft FHRR Table 4-3, FHRR Table 4-41, Cooling Tower (POI 67) NAVD88 Minimal NAVD88 and FHRR Figure 4-9 Surge+Wave Overtopping at 21.0 ft 21.0 ft FHRR Table 4-3, FHRR Table 4-41, Cooling Tower (POI 68 and 70) NAVD88 Minimal NAVD88 and FHRR Figure 4-9 Surge+Wave Overtopping at 21.2 ft 21.2 ft FHRR Table 4-3, FHRR Table 4-41, Cooling Tower (POI 69) NAVD88 Minimal NAVD88 and FHRR Figure 4-9 Note 1: Reevaluated hazard mechanisms bounded by the current design basis (see Table 1) are not included in this table Note 2: Reported values are rounded to the nearest one-tenth of a foot.

Note 3: Storm surge elevations at locations other than the seawall reflect water elevations on the site as a result of waves overtopping the seawall and water flowing across the site. Staff added the resulting overtopping depths (FHRR Table 4-41) and ground elevations to compute the stillwater elevations at the POIs associated with site buildings as shown in FHRR Figure 4-9 and FHRR Figure 4-10. The PMSS ponding level (given as the wave-overtopping effected stillwater elevation in this table) exceeds that of the CDB. The licensee stated that the reevaluated wave runup on building walls can be expected to be somewhat more than that described in the CDB (FHRR Section 5.4).

Note 4: To develop storm surge elevations at locations other than the seawall, staff sorted and grouped the stillwater elevation values by site building and then by stillwater elevation value. Staff developed table scenarios based on site building and stillwaver elevation groups at no finer than 0.1-ft increments .

Note 5: With respect to storm surge elevations at locations other than the seawall, the licensee stated in FHRR Table 4- 3 that it is apparent that the stated WSEL for POI 30 is not the general surface elevation of the floodwater in that location, particularly given the minimal flood depth. Local topography and nearby POIs 31 and 32 should be referenced to determine a reasonable, conservative flooding level for this point.

Note 6: With respect to storm surge elevations at locations other than the seawall, the licensee stated in FHRR Table 4- 41 that POI 29 is located on top of the RHR vault roof; therefore, flood depths do not accumulate because the RHR Vault roof is higher than the maximum flood water levels in the area. The licensee does not provide the definition of RHR within the FHRR.

Note 7: Values reported for local intense precipitation are representative values for each building

Retrieved from "https://kanterella.com/w/index.php?title=ML16349A175&oldid=2014588"