HomeMy WebLinkAboutApprove for introduction Ordinance No. 4122 approving Zoningi
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Exhibit 3.1 Specific Dian Districts
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LEGEND
suoset.Oeach RcOdontW -243 - 2 kres
waset 0 each 1budst - D; 16 Acres
inset Boach Park,! ng* Fad By - 13.00 Acres
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&nsGtBear,,hWotorwayo,4 .40.Acres.
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Exhibit 3.1 Specific Plan Districts
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Sunset Beach Resldentta1 22.32 Acres
Sunset Bead Tourist -1).1 b Acre s,
Sumet teach Pa*i ng Facility -13.00 Acres
Sunset Beach Beach Ama . V J4 ,Ages
FG-owl Sunset Beach Waterways • 3.40 Acres
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Exhibit 3.1 Specific Plan Districts
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Exhibit 3.1 Specific Plan Districts
This is a measurement of the shortest part of Sunset Beach. Before the Nov 2015 SBSP the specification
was 150 ft. before an emergency berm was constructed. After the Nov 2015 SBSP the City's minimum
requirement is 250 ft. and now a seasonal berm will be constructed.
With the picture below means Sunset Beach will always be required to have a seasonal berm TONY SELLAS -4
I
W Attachment No. 7.33
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The flood that occurred down Anderson street
happened on Feb 28, 2010. It hasn't happen
since then. Also the last flood was in 1983.
http://abc7.com/archive/`7303345/``
This is found in all of the 1990 and draft SBSP's
Pg. 45
No govelmmettal or private agenq stall coneruct or cause to be tonsirucled anv
stature including utn,0t Ignited to jetties, grclmIn.......... etc., ttial may altar the Iatural
shoreline Drocesses such as ,,{ays action, channel dvth, or geieral beech ccnfcureti r
,� da�erfront e�st��.
Conflict of interest.
No governmental agency shall construct a berm unless to
protect existing structure in danger from erosion.
The City bypassed the requirement above. The reasoning is
because it to help minimize the risk of coastal flooding.
Number 2 violates the all versions of the SBSP.
The statement below is only located in the Nov. 15, 2015. It is
not found in any other document.
TONY SELLAS - 5
Mho gh the- bermilarlic al dune that the CourV vsifucied has been verb,, ale fa,
approximately f 1 to' b years ago the �0,:ri "I r , *M' :.
is was in Te nse to floodng that occ tred duix
Anderson Miser anc vi. to Pacific rml Highlvay and the 9.tffoLvIding area. The ;lording
resulted fror -,o,ter tat came up agahst a seasonal berm in front of the &side Golan
development immediA� to the note M. City of veal Beach Ming "urreled into ifs Suisat
Bea,-, coon unii� streets. ;The Surfside Colon; berm has been constructed or, a seasonal
basis fo, apprrimatel,.� 30, eass.,l
Even with the rewing sand repler shnen:
prc ed, there are ties -�Aien te beach has naffooA due to km adViltj anc the
http://www.huntingtonbeachca.gov/files/users/planning/Sunset-Beach-Specific-
Plan-Draft.pdf
lap IN
Attachment No. 7.34
This is a Comparison between the City's requirement
for a temporary and what is really required per the
1985 flood study and the 1990 and Oct 2010 SBSP.
Note as far as I know there is no study to back the
City's 250 beach width requirement and time table.
The City made it up. I don't even think there is a
Coastal Development Permit.
Nowhere in any of the 1985 Flood Study or the
1990 and Oct 2010 SPSB does is say 250 ft. beach
width is the minimum requirements. Before the
Nov 2015 SBPS the minimum requirement before
any action is to be taken was 150ft.
Nov. 2015 SBSP
Wore every storm seasoi, Itho.00 et'the
Tniul N after a tech udshment prkt was completed, c e
sliurdmostbwm was nol PeWedl, Conversek in an El Nino tie m would be
reconstructed regardlass of the widM of the beich, The County`s fomw, and a It's
current pracfioa is to recons uct the berm b tNeen mid -November and December f and
tal 'it down after the storm season is mid -to late March. depencing om the storm season
I tides.
TONY SELLAS - 6
1985 Flood report
tef2ec t the oirc,,jxeta-c '
In the 1985 flood study and in both the of
the 1990 and Oct. 2010 SBSP the only time
temporary berm was to be built was when
the beach was less than 150ft and it was a
emergency condition.
Nowhere in 1985 flood study and in both of the 1990 and Oct.
2010 SBSP does it mention or gives a time table for a temporary
emergency berm.
Pre Nov 2015 SBSP the only artificial berm solution was located
behind the homes in the FP3 zone.
The City Staff made up this time table and condition.
Attachment No. 7.35
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found inthe l990S8SP
4ill and all ofthe revisions.
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bye��0 u���c�mU�a � ��["6t 22 SpA
ifaseasonal seaward berm isrequired tobebuilt 115 Dxd I Am s s~ f6obuooIn 3kI|be iTa '
every year tnoffset the removal ofthe FP3|believe
the general public will bethe biggest losers. The i �6���ov�6n�DnN'[�MDA;��Nk�"[�KnAhuow�qh�|humo�k�diDU
^ ~''~^' ~~~~'�r~~^`~``~~^�~'~~~``'~~~~�'~~~�`'�~^~~^'r~r~~^�.
winner will bethe one time home builder.
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Since there isnostudy todetermine the minimum
height ofthe berm the berm can bebuilt atany height.
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Question: Amdww6cmm&�r'�uAn�oD[�JM~AU' [�W���
Atwhat height ofthe dune violates the Sunset Beach pw�m,_=,mmw°//���u�/w/v,~/mn/....y~a...o/pW�m�°"./^smm/ce,
specific plan section I2.4and 2.2.5
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fill AckarneritiauH�N� ���nfludpuk
� mkM[buavailxk to a[aiernbgs ~ the general pticon an AqUI basis.
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nJ us e 1ohn eolffltfeKst| i .T1 lm rraAmIze-
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II.ember P�ga 14
Attachment No. r.36
TONY SELLAS - 8
The removal of the FP3 instead of
the seasonal seaward berm is a win
for the one time home builder and
is a lost to all home owners living
on South Pacific and the general
public because the general public
vli II lose the views from the beach
1,� int access vista viewpoints and
t.
1--lie easy access to the water.
LEGEND
Soundwy of Scenic Oxnaw
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Attachment No. 7.37
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The X flood zone does not require any artificial berms to
be built.
The removal of the FP3 inluuuu of the seasonal seaward
berm is a win for the one time home builder and is a lost
to all home owners living on South Pacific and the
general public because the general public will lose the
views from the beach point access vista points and lose
easy access to the water.
If the FP3 is removed what will stop residents from
challenging and reversing the artificial dunes behind the
houses.
To justify erecting an artificial dune requires a structure
to be in FP3 flood zone.
TONY SELLAS - 9
From the 1985 Flood report
ARTIFICIAL, M - A protective device made of sand designed to prevent
or reduce damage by waves and/or ocean waters to the structures
behind it.
PROTECTIVE DEVICE - A seawall, bulkhead, revetment or artificial €lam
designed to protect a structure located in the FP-3 zone.
ANTIFIEAL iNatC
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LIST OF STMSULS o ocw e i ii it
DL a. design life of structure or protective d1
d M Ey • ELEYA*IONdt3NQE R$IQ€OE R€BIQERiE
EE • MAXIMUM ELEVATION. NATURAL GRACE bEMEATN RESiQEM
Figure S. Procedure to calculate distance hetwen ground elevation and
uadereide of reaideaces at Sumer beach.
Attachment No. 7.38
TONY SELLAS - 10
The Nov 2015 revised SBSP seasonal seaward berm.
Has there been a study to determine if the required
height and width need for a secondary protect.
Question:
1) Does the height of the seasonal berm block the views
from the vista points.
2) Does the height of the seasonal berm deny access to
the handicap, elderly and family with little children?
3) Should the seasonal berm
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'�a 1
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t! "WE' 9't ELEVAT 1
% • ELCOATUM Of UNDENADE CO AtI I DENtt
E' :AidiIMA (JU04N, IiMAAL 444M EENEATN MOM
pittuta 9, pmtlurd th fAltalita eiaten+te betvtdn trtrtaj tl.etieti a.-rl
atwders*4 of reGAWAee at k-axet Boleh,
Silt .2'a WLUa V, 14 atta `ligh the disuse t4 vw; the natural
groutJ elevation and the utdera a of a scructmre
at slawt Be&6.
UPCIM MtItkt CLrF.,ltI;A110E%, Ely 01 SUCH;
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Vertical C11ratalune
ad in ft (0001 Ee =Ea, to :Ades
14.1 to 1.3.2 11
13.12 to 15.1 «4
Si1i 27
ldo*$ not APPLY to drake VA pules; natural trade toot be sitilAr
to Out of Aaacert property
iaataral grade to ]oaast ptrtior at unit aide of ratideate,
Attachment No. 7.39
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Attachment No. 8.1
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Flood Risk Review Meeting for Orange County
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Federal Emergency Management Agency - Region IX
Ed Curtis, PE, CFM — Regional Engineer, Study Manager
Mark Delorey — Natural Hazards Program Specialist
Community Representatives
Orange County, Cities of Dana Point, Huntington Beach, Laguna Beach,
Newport Beach, San Clemente, Seal Beach
FEMA Production and Technical Services Contractor
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FfEMA
Sarah Houghland, Engineer I Project Manager BakerAECOM .
Karin Ohman, Coastal Engineer Ar InLrIgiat d Production Tbarir
Lisa Messano, Outreach Coordinator
Aron Langley, GIS Analyst
Please enter your contact information on the sign -in sheet
Pi AMAP
12
Attachment No. 8.2
Provide an overview of FEMA's
National Flood Insurance Program (NFIP)
Risk Mapping, Analysis, and Planning (MAP) Program
Open Pacific Coast (OPC) Study
Review F E MA's
Coastal study process and methodology
Draft Work Maps
Online tool for review and comments
Discuss how FEMA products and datasets can
Support your flood risk communication
Inform decisions to reduce flood risk
Answer your questions
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Attachment No. 8.3
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Attachment No. 8.4
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U.S. Congress established the National
Flood Insurance Program with the passage
of the National Flood Insurance Act of 1968
■ Community adopts and enforces a
floodplain management ordinance to reduce
flood risk to new and existing development
in mapped floodplains
■ Federal government makes flood insurance
available to property owners in participating
communities
For more information on the NFIP visit www.fema.gov
Attachment No. 8.5
Vision
To deliver quality data that
increases public awareness
and leads to action that
reduces risk to life and
B
property
Objective (Coastal)
To provide updated flood haza
data for 100% of the populate(
U . S . coast
isk
Attachment No. 8.6
Kate Man (FIH
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'Mil a rOTOTO
RUMAP
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Attachment No. 8.7
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Attachment No. 8.8
Two Companion Large -Scale Efforts:
■ Open Pacific Coast (OPC) Study
■ San Francisco Bay Area Coastal (BAC) Study
Re -study flood risk
along the open coast
and inland bays of all
California coastal
counties
Re -map the elevation
and inland extent of
wave -induced coastal
www.r9coastal.org
flooding
Attachment No. 8.9
Overall OPC Study Schedule
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Map Production Post -Prelim Processing
Preliminary maps
Community review
Preliminary FIRM meeting
11 Statutory process for proposed BFE
Map adoption: 6-month compliance
period
Maps become Effective
a Preliminary
Maps Post -Preliminary Processing
30-45 Days
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30 Days or
More + 90 I
Days
90 Days
6 Months
Attachment No. 8.11
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Preliminary FIRM Meeting
Discovery Meeting Flood Risk Review Meeting
Discuss coastal analysis and
Orange Study Kick-off
Resilience Workshop
review draft work maps with
Implement actions to
Orange County
o
mitigate or reduce
CN
coastal flood risks
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Outreach Timeline Open Pacific Coast Study
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Proposed Flood Hazard
Determinations I Appeal Period
Issue Letter of Final Determination (LFD)
Effective Maps
Physical Map Revision (PMR)
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kVVM"PxskMAP-* Wn" VWOM
Attachment No. 8.12
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Attachment No. 8.13
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Attachment No. 8.14
Intermediate Data Submittals (IDS)
IDS #1 - Scoping and Data Review
• Field reconnaissance
• Technical methodology
• Data acquisition
IDS #2 - Offshore Waves and Water Levels
• Deepwater wave modeling
• Nearshore wave transformation modeling
• Stillwater elevation analyses
IDS #3 - Nearshore Hydraulics
Onshore analyses
Results = BFEs
IDS #4 - Draft Flood Hazard Mapping
Determination of flood hazard areas
Draft Work Maps
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Attachment No. 8.15
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• Discovery -Community Input
• Areas of Concern
• Structures Assessment
Topography
Bathymetry
California Coastal
Mapping Program
Protection
R
Elevation (IiDAR)
Specification
State Standard
Vertical Accuracy
(95% confidence)
18.2 cm
Vertical RMSE
9.25 cm
Horizontal Accuracy
(95% Confidence)
50 cm
Horizontal RMSE
12.25 cm
Spot Spacing
<E=1 m (nominal)
Tidal Coordination +}_ 1.5hrs MLLW
Attachment No. 8.17
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Attachment No. 8.18
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level (
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Attachment No. 8.19
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Deepwater Wave Hindcast -- Oceanweather Inc.
• Global Reanalysis of Ocean Waves (GROW) Model
• 50-year hourly hindcast of waves (1960-2009)
• SOCAL model provides wave spectra at 813 grid point locations
® Hindcast data and historical flood data validation
® Reanalysis of significant storms (372 storms)
Model
output
paints
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GROW
GROWFine: NEPAC
COASTAL
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FEMA
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Attachment No. 8.20
Nearshore Wave Transformation -
Scripps Institution of Oceanography (SIO)
SIO SHELF linear spectral refraction and shoaling model from deepwater to
surf zone (15 m water depth every 200 m alongshore)
50-year hourly hindcast of nearshore waves (1960-2009)
Model validation with CDIP and NDBC buoy data
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Attachment No. 8.21
Transect-based
analysis
88 transects
Transect locations
and density:
Shoreline
Q characteristics
19 Shoreline orientation
Exposure to storms
Nearshore
bathymetry
0 Wave climate
Land use and
development
Attachment No. 8.22
Components of the total water level (TWL)
Astronomical tide (predicted tide): 5-7 ft
Surge components: atmospheric pressure, wind
setup, El Nino sea level effects: 1-4 ft
■ Wave components: wave setup + runup: 10-50 ft
Total Water
Level (TWL)
Wave Runua---/-�
Attachment No. 8.23
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Onshore Transect-Based Analyses
Setup and Runup Methods:
Extended slope
• Stockdon
Potential runup"".
Sandy beaches
• DIM
Overtopping
T1
Slope < 1 /8
Dynamic water level
r
• TAW
Slope >_ 1 /8 ti
r
Overtopping Overtopping
Revetments
R
at c
depth
Limit
(SERA)
SPM
a
Vertical walls
Statistical Analysis:
Annual maxima with Generalized Extreme Value Distribution
s� emu.:...
Attachment No. 8.24
Onshore Transect-Based Analyses Results onto Maps
Inland extent of inundation 4 SFHA boundary
• Wave heights along transect --> flood zone designations
(VE and AE Zones)
• Wave crest elevations along transect 4 BFEs
_ ____ ZoneVE
__
Wave Crest
Profile SWEL
Shoreline at.p madatum
........................
5.
Attachment No. 8.25
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Special Flood Hazard Area (SERA) Mapping
Zone VE: Inundated by 1-percent annual chance flood with additional wave -
induced hazards (wave runup, wave overtopping splash, high velocity, or
overland wave propagation); detailed BFE
Wave runup zone occurs where the ground profile is 3.0 feet or more below the TWL
Wave overtopping splash zone is the area landward of the crest of an overtopped barrier, in
cases where the runup exceeds the barrier crest by 3.0 feet or more
• High velocity flow zone landward of the overtopping splash zone, where the product of the
depth of flow times the flood velocity squared (hv2) is greater than 200 ft3/s2
w Breaking wave height zone where 3 ft or greater wave heights could occur
® Primary frontal dune zone
Zone AE: Inundated by 1-percent annual chance flood; detailed BFE
The VIE, and AE high hazard zones carry mandatory flood insurance
purchase requirements
Zone X (shaded): Inundated by 0.2-percent annual chance flood (or inundated
by <1 ft for 1-percent flood)
Attachment No. 8.26
FLOODPLAIN ELEVATIONS
BFE fNAVD88)
Cross Section (NAVD88)
Coastal Transect lNAVD86)
OTHER FEATURES
Coastal Transact Baseline
Structures
Levee Centerfine
Study Profile Baseline
Primary Road
Secondary Road
LocalRoad
VehiCU13r Trail
Railroad
FIRM Panel (proposed)
FIRM Panel (effective)
PoftW Area
PROPOSED FLOOD ZONES
ZONE AH
-;7d ZONE X - 0,2 PCT (LE-VEE)
ZONE D
ZONE A
ZONEAE
ZONE AE FLOOU;NAY
ZONE AO
ZONEVE
ZONE X - 0.2 PCT
EFFECTIVE ZONE TIE-INS
Effective Flood Zone
Pds-kMAP
Attachment No. 8.27
a
Example Locations
• Transect 11 — Huntington
Beach (wave runup)
• Transect 4 — Seal Beach
(beach nourishment)
• Transect 7 — Bolsa Chica
State Beach (inundation
and backshore wave
overtopping)
• Transect 73 — Dana Point
Harbor (jetty overtopping)
28
Attachment No. 8.28
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P.
Attachment No. 8.29
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Coastal Analysis Results
1 % SWEL = 7.94 ft NAVD
0.2% SWEL = 8.33 ft NAVD
1% Runup (TWL) = 20.0 ft NAVD
0.2% Runup (TWL) = 22.2 ft NAVD
Modified beach nourishment transect
Overtopping
NAMAP
Attachment No. 8.30
Profile Comparison
0 Study Terrain included much broader, nourished beach
IN Modified transect 4 to use SIO 2007 LiDAR on beach, more representative of natural conditions
Suriside (T4)
AD
D.]
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NO 91 4CO wo bgFi 700
SO b4ft Itt)
Rb'skMAP
Attachment No. 8.31
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Attachment No. 8.32
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Special Flood Hazard Area (SFHA) Mapping
Three hazard zones identified at this transect:
• Wave runup hazard zone: VE (EI 23 ft NAVD)
• Overtopping hazard zones: VE (EI 23 ft NAVD)
Project TWL Method - Transect 7
25
20
Wave,.
Z 1.5
> Runupr* Foreshore
Crest
-i�- 10
0 11 SWL
VE (23)
0
IIAW 1.1.450 1.1.500 1.1.550
VE (23)
TWL projected to back of beach
1.1600 1.1.650 1.1.700
Distance along proffle (ft.)
Attachment No. 8.33
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Coastal Analysis Results
• 1% SWEL = 7.94 ft. NAVD, 0.2% SWEL = 8.33
ft NAVD
1% Runup (TWL) = 42.79 ft NAVD open
coast, 16.64 ft. NAVD 88, sheltered
72
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73
74
Overtopping and
wave transmission
over jetty
Runup and
overtopping
calculated on
sheltered
revetment
kMAP
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WW Wool
Attachment No. 8.34
2
NEW
Preliminary FIRM Meeting
Discovery Meeting Flood Risk Review Meeting
Orange Study Kick-off Discuss coastal analysis and
Resilience Workshop
review draft work maps with
Implement actions to
Orange County
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mitigate or reduce
CN
C4
coastal flood risks
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10
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Outreach Timeline Open Pacific Coast Study
Data Coastal Floodplain Prelim. Map
Acquisition Analysis Mapping Production
Map Production Timeline I Typical Coastal Flood Study
Proposed Flood Hazard
Determinations I Appeal Period
�15
Issue Letter of Final Determination (LFD) I
Effective Maps
Physical Map Revision (PM)
IUAMAP
Attachment No. 8.35
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■ FEMA
Post the work maps online for review and comment at
.r
Produce Preliminary Maps and schedule preliminary
FIRM meeting
■ Community Officials
Review and comment on the draft work maps
Tailor outreach plan template
Begin communicating about flood risk
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Attachment No. 8.36
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Study Updates
1Nebsite: www.r9coastal.or�
Attachment No. 8.37
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FEMA Region 9 Webpage
Follow FEMA R9 via Twitter @femaregion9
Sign up for FEMA Email Updates at
www.fet-na.aov/subscribe-receive-free-email-UDt S
Topics: Region 9 NFIP / CCAMP / Region 9 Risk MAP
■ Sign up for the California Coastal Analysis and Mapping Project
(CCAMP) E-newsletter at
■ Ready.gov, Listo.gov, Ready.gov/business - Fact sheets, links to
training
Attachment No. 8.38
in -
• Flood risk products supplement information on the FIRM. They
work alongside the regulatory products to provide additional
flood risk information and help plan for resilience.
• Will be issued prior to Resilience Workshop (early 2017)
Types of flood risk products:
Flood Risk Map, Flood Risk Report, and Flood Risk Database
Changes Since Last FIRM
Areas of Mitigation Interest
* Coastal Depth Grid Prepared for specific
stretches of coast as
Sea -Level Rise & Coastal Erosion requested by community
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Attachment No. 8.39
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RiskMAP
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Attachment No. 8.40
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Attachment No. 8.41
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Attachment No. 8.42
• Post draft Work Maps online at www.r9coastal.org for
community review
Accommodate community staff need to review data
beyond the meeting timeframe
Reduce paper map
products from the
workflow — and reduce
the potential for lost
comments
FEMA..
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Attachment No. 8.43
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■ Work Maps will soon be released for Orange County
review
• Users will be provided a unique login and password
• WebEx-based demo
Works Maps will be avc '' ' 'Ir
■ All comments will be
recorded and archived
Attachment No. 8.44
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Attachment No. 8.45
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■
Attachment No. 8.46
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Attachment No. 8.47
FLOOD HAZARD INFORMATION NOTES TO USERS SCALE
SEE FlS REPORTFM ZONE DESCRIPTIONS AND INDEA MAP
THE INFr•P.MATION DEPIMD ON 711S M FMD SUPPORTING
DOCDMENTATIONAP.E—AVAILAB E. OIGEAIFOP.WAT
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Item 14. AMe118
FEATURES I luRSWctlon Boundary
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PANEL LOCATOR
HB -376-
NATIONAL FLOOD INSURANCE PROGRAM
GRANNGECOUNTY,CAUFORNIA
— 227 m 539 _ u
PRE-UMINARY
August 15. 2016
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LEGEND
1. FP-3 -----
2. OPOS
S. BREAKINGACT WAVE CHARACTERISTICS
Ll
4. DEFINffKM
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COUNTY
COASTAL FLOOD PLAIN
SUNSET BEACH
TM
4,ttachment No. 12.6
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ZMA No. 16-001/ZTA No.16-003/L.CPA No. 16-001/ND No. 16-001
(Sunset Beach Beachfront Flood Requirements)
Attachment No. 13.2
PC Staff Report - 12/13/16 �� _,9l_,sr37 ZMA 16-001 ZTA 16-003 LCPA 16-Item 14. - 133
NOTES TO USERS
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o :FLOOD INSURANCE RATE MAP
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® CALIFORNIA
A`
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r PANEL 227 OF 539
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MAP NUMBER
'e 06059COWJ
MAP REVISED
DECEM13ER 3, 2009
ReaeMl Imr�enar.Nnnagemref Aaeney
NOTES TO USERS
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SCALE I
E V [I PANEL NSW
{ ; FIRM
p M 1 I FLOOD INSURANCE RATE MAP
ORANGE COUNTY,
CALIFORNIA
AST I'llf.ORKIA.A rE.D ARIAS
PANEL 229 OF 539
.WE MAP I. —FOR FIRM PAWL uyo!nl
MAP NUMBER
06059CO229J
MAP REVISED
DECEMBER 3, 2009
Errbnl fineryenn' SbeMeeMnr AyenY