HomeMy WebLinkAbout20200226_Coastal Hazards Analysis Report Revised_02-24-20
P M A C O N S U L T I N G , I N C . CONSULTING STRUCTURAL ENGINEERS
28161 Casitas Ct. PH. (714) 717‐7542
Laguna Niguel, CA 92677
e‐mail: consulting@pma‐bg.com
February 24, 2020
Dominic Tucci
PO Box 1304
Newport Beach, CA 92659-0304
COASTAL HAZARDS ANALYSIS REPORT
Dominic Tucci; Applicant
3905 Marcus Avenue
City of Newport Beach, County of Orange
PMA Job #30919
Dear Mr. Tucci,
PMA Consulting, Inc. is pleased to provide this report regarding Coastal Hazards Analysis for
the proposed development at the subject site. The site is adjacent to Newport Bay, thus it may be
subject to Coastal Hazards such as, flooding, wave runup, and erosion. This study investigates the
potential for the aforementioned hazards to impact the proposed development on the site over the next
75 years and addresses compliance with Coastal Hazards Analysis Report requirements and standards
of NBMC Section 21.30.15.E.2.
STATEMENT OF THE PREPARER’S QUALIFICATIONS
Plamen Petrov, P.E., the preparer of the Coastal Hazards Analysis Report on this project,
holds a Master of Science in Structural Engineering from University of Architecture, Structural
Engineering & Geodesy of Sofia, Bulgaria, and is a Licensed Civil Engineer by the State of
California Certificate No. C66947. For the last 20 years of his professional career he has been
actively involved in the design and entitlement of many Waterfront Developments such as custom
homes, seawalls, piers, platforms, floating docks and marinas. A great number of Coastal Hazards
Analysis Reports prepared by him have been reviewed and accepted/approved by California Coastal
Commission.
All the above being said, Plamen Petrov, P.E. shall be considered a qualified preparer for the
Coastal Hazards Analysis Report on this project.
Requirements in Appendix A for Step 1:
Establish the project sea level rise range for the proposed project’s planning horizon
(life of project) using the current best available science.
The State of California Sea-Level Rise Guidance 2018 update developed by the Ocean
Protection Council in close coordination with Policy Advisory Committee with representation
from California Natural Resources Agency, the Governor’s Office of Planning and Research, and the
California Energy Commission provides a bold, science-based methodology for state and local
governments to analyze and assess the risks associated with sea-level rise, and to incorporate Sea-
Level Rise into their planning, permitting, and investment decisions, and it is considered the
current best available science.
As reflected in the clouded area of the enclosed Table 28, based upon direct interpolation
of the data for High emissions 2090 & 2100 and Medium-High Risk Aversion, over the project’s
planning horizon of 75 years, the estimated Sea-Level Rise (SLR) for year 2095 shall be
approximately 6.00’, which is the Sea- Level Rise for the proposed project. Based on the highest
high tide of +7.88’MLLW (7.70’NAVD88) recorded in the project area, the above established
Sea-Level Rise will account for bay water level of +13.70’NAVD88.
At the request of Liz Westmoreland of City of Newport Beach Planning Department, we
have enclosed Table 28 with interpolated data for High emissions 2090 & 2100 and Low Risk
Aversion. Based on that interpolation, the estimated SLR for year 2095 shall be approximately
2.95’, which is much smaller than the governing estimated SLR for Medium-High Risk
Aversion
Requirements in Appendix A for Step 2:
Determine how physical impacts from sea level rise may constrain the project site,
including erosion, structural and geologic stability, flooding, and inundation.
According to the enclosed Site Plan a1.0, finished 1st floor elevation of the proposed
development is at +9.86’ NAVD88=+10.04’MLLW which follows the Base Flood Elevation
established for the area. Based on the SLR established in Step 1 above, 1st floor of the proposed
structure will remain above High Tide sea level approximately until year of 2065. As we well
know, majority of the public streets in Newport Bay area are currently at much lower
elevations than the subject site and they will flood due to SLR way before the development on
this site becomes subject to flooding.
FLOODING HAZARD
The primary hazard due to flooding from the ocean waters for this site, like majority of the
sites located adjacent to Newport Bay, would be due to long term Sea-Level Rise. The current water
levels in Newport Bay are reflected on the enclosed Datums for Newport Bay Entrance.
According to the enclosed seawall DWGS SW-0 thru SW-2, top of the proposed Concrete
Stem Wall shall be at +10.60’ NAVD88 = +10.78’ MLLW in accordance with the current City of
Newport Beach Waterfront Projects Guidelines and Standards.
While Sea-Levels have been Rising for decades, higher rates of raise are forecast for the
coming century because of climate change – see enclosed table 28. Increases can be attributed to
warmer temperatures, which cause water to expand, as well more liquid mass caused by melting of
ice caps. Current estimates of future SLR generally fall in the range of 4.5-6.7 ft for the year 2100.
Global warming may impact flooding in other ways as well. Warmer water could intensify North
Pacific storms, bringing greater wind and wave energy to shoreline in winter and higher intensity
precipitation.
The Newport Beach Peninsula portion of the Pacific Institute California Flood Risk Map is
shown herein as OE S Quadrangle. The dark blue colored areas show the areas where a 100-year Sea-
Level Rise of 55 inches is added to the existing FEMA coastal flood elevation shown in light blue.
Obviously, the entire Newport Bay area will be affected if sea level rises 55 inches by the year 2100.
If the sea level rises in the next several decades as currently estimated, regional measures
to mitigate the potential flooding hazard shall be taken. As determined in Step 2 above, 1st floor
elevation of the proposed structure will remain below High Tide sea level approximately until
year of 2065. Utilizing Flashing and Waterproofing for up to 12” above top of slab, as reflected
on the enclosed detail, and sandbags at doors openings shall keep the building protected from
flooding until year of 2095.
WAVE RUNUP
Wave runup is the uprush of water from wave action on a shore barrier intercepting Stillwater
level. On steeply sloped shorelines, the rush of water up the surface of the natural beach, including
dunes and bluffs, or the surface of a manmade structure, such as revetment or vertical
wall can result in flood elevations higher than those of the crest of wind-driven waves. See wave
Runup Sketch below.
Due to its location, this site is not a subject to typical ocean waves and the associated wave
runup. Bay generated waves that may arrive at this site are very small wind waves and boat wakes.
These types of waves are generally dampened by the moored vessels and dock systems located in
front of the site and have no significant energy and runup effect. Tsunami type waves that approach
from the ocean shoreline will likely not reach the site for several reasons. There is no significant near
field source of a tsunami like the geologic conditions of some other places on Earth such as Japan, for
example. A far field tsunami reaching the ocean shoreline will likely not reach the site because of the
distance and developments between the shoreline and this site. A near or far field tsunami
propagating into Newport Bay proper would likely cause a seiche or standing wave on the order of
1.3 feet traveling within the bay. Even at the highest anticipated tide in Newport Beach of
+7.88’MLLW this shall not result in overtopping of the bulkhead/seawall. Due to its very infrequent
occurrence – 500-year recurrence interval – tsunami should not be considered a significant
impact over the life of the proposed structure -75 years.
EROSION HAZARD
Erosion refers to the wearing or washing away of coastal lands. Beach erosion is a chronic
problem along many open ocean shores of the United States. To meet the needs for comprehensive
analysis of shoreline movement, the United States Geological Survey has conducted analysis of
historical shoreline changes along open ocean sandy shores of the conterminous United States and
has produced an Open-File Report 2006-1219 entitled “National Assessment of Shoreline Change
Part 3: Historical Shoreline Change and Associated Coastal land Loss Along Sandy Shorelines of the
California Coast”. The report looks at survey data of the following periods: 1800s, 1920s-1930s, and
1950s-1970s, whereas the lidar shoreline is from 1998-2002. The report looks at both long-term and
short-term changes. According to the report, the average rate of long-term shoreline changes for the
State of California was 0.2±0.1 m/yr., and accretional trend. The average rate of short-term shoreline
change for the state was erosional; with an average rate of -0.2±0.4 m/yr. The beach footprint of this
site is stabilized and not subject to significant long-term erosion. Review and analysis of historical
aerial photographs and field measurements for seawall repairs in the area show no change in the
position of the shoreline over the last several decades. The future shoreline changes over the next 75
years are assumed to be the same as in the previous several decades. However, there is a rapid rate
of SLR predicted in the next 75 years. If that prediction holds true, the rapid SLR may
accelerate shoreline erosion, but it shall not impact the structure on the subject lot over its
economic life.
CONCLUSION
In conclusion, flooding, wave runup and erosion will not significantly impact this
property over the proposed life of the development. The existing seawall/bulkhead is required
to protect the proposed structures on the lot, the adjacent properties, public facilities and
infrastructure; thus, it can’t be removed. Removal of the seawall/bulkhead will result in erosion
and undermining the foundations of the structures and site walls at the subject site and both
adjacent sites. Once the existing seawall/bulkhead is repaired/reinforced in compliance with the
enclosed drawings SW-0 thru SW-2, need for a new shoreline protective devise shall not
anticipated over the economic life of the proposed development to protect it from flooding,
wave runup or erosion. If found not adequate for the actual sea level rise over the next 75 years,
the existing seawall/bulkhead assembly allows to be increased in height per the enclosed STD-
601-L without further seaward encroachment. If during this period the seawall/bulkhead
displays any sign of distress that requires immediate attention, due to some unforeseen
catastrophic or disastrous events, it should be repaired or replaced at that time accordingly,
without seaward encroachment from its current location.
The above conclusion was prepared based on the existing conditions, proposed drawings,
current projection of future Sea-Level Rise, and within the inherent limitations of this study, in
accordance with generally acceptable engineering principles and practices. We make no further
warranty, either expressed or implied.
PMA Consulting, Inc. appreciates the opportunity to work with you towards the successful
completion of your project. Should you have any questions regarding this report, please contact us.
Respectfully submitted,
Plamen Petrov, P.E.
Principal
Enclosures:
Location Map
Aerial View
Topographic Survey
Site Plan a1.0
Table 28: Projected Sea-Level Rise (in feet) for Los Angeles 2095 Medium-High Risk Aversion
Table 28: Projected Sea-Level Rise (in feet) for Los Angeles 2095 Low Risk Aversion
Datums for Newport Bay Entrance
Flashing & Waterproofing Detail
City of Newport Beach – STD-601-L
Newport Beach OE S Quadrangle
Seawall Drawings SW-0 thru SW-2
LINEPROPERTYCONC.X X XBUILDING2 STORYBUILDING1 STORY N37%%D13’30"W 28.57’ N37%%D13’30"W 28.57’ DOCK 6.11FS 6.23FS 6.67FS 7.41FS 7.89FS X X X X N52%%D46’30"E 100.00’ 7.86FS 7.85FS LOT 3 OF BLOCK 339 OF CANAL SECTIONJOB: 68-17 DATE: 11/9/17RdM SURVEYING INC.RDMSURVEYING@COX.NET 949 858-3438 FAX 949 858-2924 OFFICELAGUNA HILLS, CA 9265323016 LAKE FOREST DR. #409RON MIEDEMA L.S. 4653TOPOGRAPHIC SURVEYLEGAL DESCRIPTION:PREPARED FOR:ERIC AUSTBASED ON NAVD 88 DATUM.LEAD AND TAG ELEVATION= 8.31NEWPORT BEACH, CAPROJECT BENCH MARK:SEA WALL 6.66TW 7.03FS BUILDING 7.46FS 6.41FS CONC. 6.94FS 6.71TW PCONC. 9.09TW 7.42TW CONC.PCONC.CONC. CONC. LINEPROPERTYCONC. 7.37FS CONC. CONC. CONC. 16’MONUMENT PROPERTY CORNERS OR OFFSETSSURVEYOR OR ENGINEER SHALL PERMANENTLYNOTE: RECORD EASEMENTS ARE NOT PLOTTED IF ANY.FENCEXX3905 MARCUS AVE.ADDRESS OF PROJECT:T.G.A.C.PM.H.TOP-GRATEMAN-HOLEASPHALTPLANTERWMCONC.F.S.G.F.F.F.N.G.P.P.WATER METERFINISH SURFACECONCRETEGARAGE FLOORFINISH FLOORBENCH MARKNATURAL GRADEPOWER POLEDESCRIPTION 123.45 BRICKPROPERTY LINEBUILDINGWALLREC. BRG. & DIST.MEAS. ELEVATIONSDECKLEGENDBEFORE STARTING GRADING.NORTH8’SCALE: 1"=8’0’ ST. LIGHT BOX TELE. BOX 7.62FL 7.59FL 8.03TC X 7.61FL VICINITY MAP 40TH ST. 39TH ST. ALLEY MARCUS AVE.BUILDING 8.24FS CONC. 3.0 CONC. 3.1 8.15FS CONC.CONC. ELEC. BOX 8.30FS 2 STORY 8.56GF CONC. CONC. CONC. 8.23FS 3.8 CONC.CONC. 6.4 8.20FS CONC.CONC. 8.24FS CONC.CONC. 8.06FS COVER SEWER WM S&W 7.65 ALLEY MARCUS AVE.LINECENTERACLINE 7.71FL S&W ACAC 8.01 8.07FS ACACACCENTER WV EAVE 25.65 X X X X SEA WALL 6.67 5.93FS DOCKDOCKDOCK 6.90FS RAMP RAMP RAMP L&T LINECONC. 6.84FS 6.58TW LINEPROPERTYCONC.3’ FENCE 7.48TW 19.6 PCONC.P 8.20FS CONC. 10.55TW CONC. 7.81FS 7.38FS CONC. 8.34FF CONC.CONC.PROPERTYCONC.P 8.28FS CONC. CONC. 29.93 RIDGE 3.02.9 CONC. CONC. CONC. 36.22 RIDGEACAC 15.0 SEWER COVER 7.66FL 8.09TC X 8.13TC X 7.71FL 7.67FL 7.74FL 8.14TC CONC. 37.11 BUILDING MULTI LEVEL N52%%D46’30"E 100.00’ CONC. SEWER COVER CONC. RIDGE 8’ FENCE 8.34GF 8.21GF 20.26 RIDGE CONC. 6’ FENCE CONC. PPX XCONC. X CONC.CONC. 8.31FS CONC. 4.0 8.25FS CONC. 4.5 CONC. 0.5 CONC.CENTERLINE GAS METER WM 8.27FS L&T 8.31 8.17TC 8.14TC AC 8.09FS ACAC 8.09FS AC 15.0 CF.W. 2.0 GUTTER ACACAC 5.0 8.16TC SEWER MH 7.94 S&W 7.72 COUNTY OF ORANGE BM NB2-7-77 ELEVATION 8.56MAIN BENCH MARK; RONMIEDEMANO. 4653EXP. 9/30/21 L I C E N S E D L A N D S U R V E Y O R S T A T E O F C A L I F O R N I A FEMA FLOOD LEVEL A0 1 8.3 FS 8.3 FS
PDUFXVDYHQXHED\ED\PDUFXVDYHQXHED\DDDDVWQGIORRUSODQV
FRS\ULJKW MRE GHFHPEHU F PDUFXVDYHQXHQHZSRUWEHDFKFDOLIRUQLDWXFFLDUFKLWHFWGRPLQLFEHWV\WXFFLFOLHQW QHZSRUWEHDFKFDOLIRUQLD PDUFXVDYHQXHQHZSRUWEHDFKFDOLIRUQLD EDOERDFRYHVWHO UHVLGHQFH WHO
VWIORRUSODQVIORWDUHDSURMHFWDUHDDQDO\VLVVIEXLOGDEOHORWDUHD[ VIDOORZDEOH VIVWIORRU OLYDEOH SURMHFWDUHDDQDO\VLVVIWRWDOOLYDEOHVIUGIORRU OLYDEOH VIJDUDJHVIQGIORRU OLYDEOH VIWRWDOIORRUDUHDQGIORRUSODQVIVWIORRU DWHQWU\ VIWRWDORSHQVSDFH UHT
G RSHQVSDFHSURYLGHGVIVWIORRU DWUHDUSDWLR VIQGIORRU DWUHDWSDWLR ZDOOOHJHQGQRUWKUHIQRUWK
Probabilistic Projections (in feet) (based on Kopp et al. 2014)
H++ scenario
(Sweet et al.
2017)
*Single
scenario
MEDIAN LIKELY RANGE 1-IN-20 CHANCE 1-IN-200 CHANCE
50% probability
sea-level rise meets
or exceeds…
66% probability
sea-level rise
is between…
5% probability
sea-level rise meets
or exceeds…
0.5% probability
sea-level rise meets
or exceeds…
Low
Risk
Aversion
Medium - High
Risk Aversion
Extreme
Risk Aversion
High emissions 2030 0.3 0.2 - 0.5 0.6 0.7 1.0
2040 0.5 0.4 - 0.7 0.9 1.2 1.7
2050 0.7 0.5 - 1.0 1.2 1.8 2.6
Low emissions 2060 0.8 0.5 - 1.1 1.4 2.2
High emissions 2060 1.0 0.7 - 1.3 1.7 2.5 3.7
Low emissions 2070 0.9 0.6 - 1.3 1.8 2.9
High emissions 2070 1.2 0.8 - 1.7 2.2 3.3 5.0
Low emissions 2080 1.0 0.6 - 1.6 2.1 3.6
High emissions 2080 1.5 1.0 - 2.2 2.8 4.3 6.4
Low emissions 2090 1.2 0.7 - 1.8 2.5 4.5
High emissions 2090 1.8 1.2 - 2.7 3.4 5.3 8.0
Low emissions 2100 1.3 0.7 - 2.1 3.0 5.4
High emissions 2100 2.2 1.3 - 3.2 4.1 6.7 9.9
Low emissions 2110* 1.4 0.9 - 2.2 3.1 6.0
High emissions 2110* 2.3 1.6 - 3.3 4.3 7.1 11.5
Low emissions 2120 1.5 0.9 - 2.5 3.6 7.1
High emissions 2120 2.7 1.8 - 3.8 5.0 8.3 13.8
Low emissions 2130 1.7 0.9 - 2.8 4.0 8.1
High emissions 2130 3.0 2.0 - 4.3 5.7 9.7 16.1
Low emissions 2140 1.8 0.9 - 3.0 4.5 9.2
High emissions 2140 3.3 2.2 - 4.9 6.5 11.1 18.7
Low emissions 2150 1.9 0.9 - 3.3 5.1 10.6
High emissions 2150 3.7 2.4 - 5.4 7.3 12.7 21.5
STATE OF CALIFORNIA SEA-LEVEL RISE GUIDANCE
APPENDIX 3: SEA-LEVEL RISE PROJECTIONS FOR ALL 12 TIDE GAUGES | 72
TABLE 28: Projected Sea-Level Rise (in feet) for Los Angeles
Probabilistic projections for the height of sea-level rise shown below, along with the
H++ scenario (depicted in blue in the far right column), as seen in the Rising Seas
Report. The H++ projection is a single scenario and does not have an associated
likelihood of occurrence as do the probabilistic projections. Probabilistic projections
are with respect to a baseline of the year 2000, or more specifically the average
relative sea level over 1991 - 2009. High emissions represents RCP 8.5; low emissions
represents RCP 2.6. Recommended projections for use in low, medium-high and
extreme risk aversion decisions are outlined in blue boxes below.
*Most of the available climate model experiments do not extend beyond 2100. The resulting
reduction in model availability causes a small dip in projections between 2100 and 2110, as well as
a shift in uncertainty estimates (see Kopp et al. 2014). Use of 2110 projections should be done with
caution and with acknowledgement of increased uncertainty around these projections.
Probabilistic Projections (in feet) (based on Kopp et al. 2014)
H++ scenario
(Sweet et al.
2017)
*Single
scenario
MEDIAN LIKELY RANGE 1-IN-20 CHANCE 1-IN-200 CHANCE
50% probability
sea-level rise meets
or exceeds…
66% probability
sea-level rise
is between…
5% probability
sea-level rise meets
or exceeds…
0.5% probability
sea-level rise meets
or exceeds…
Low
Risk
Aversion
Medium - High
Risk Aversion
Extreme
Risk Aversion
High emissions 2030 0.3 0.2 - 0.5 0.6 0.7 1.0
2040 0.5 0.4 - 0.7 0.9 1.2 1.7
2050 0.7 0.5 - 1.0 1.2 1.8 2.6
Low emissions 2060 0.8 0.5 - 1.1 1.4 2.2
High emissions 2060 1.0 0.7 - 1.3 1.7 2.5 3.7
Low emissions 2070 0.9 0.6 - 1.3 1.8 2.9
High emissions 2070 1.2 0.8 - 1.7 2.2 3.3 5.0
Low emissions 2080 1.0 0.6 - 1.6 2.1 3.6
High emissions 2080 1.5 1.0 - 2.2 2.8 4.3 6.4
Low emissions 2090 1.2 0.7 - 1.8 2.5 4.5
High emissions 2090 1.8 1.2 - 2.7 3.4 5.3 8.0
Low emissions 2100 1.3 0.7 - 2.1 3.0 5.4
High emissions 2100 2.2 1.3 - 3.2 4.1 6.7 9.9
Low emissions 2110* 1.4 0.9 - 2.2 3.1 6.0
High emissions 2110* 2.3 1.6 - 3.3 4.3 7.1 11.5
Low emissions 2120 1.5 0.9 - 2.5 3.6 7.1
High emissions 2120 2.7 1.8 - 3.8 5.0 8.3 13.8
Low emissions 2130 1.7 0.9 - 2.8 4.0 8.1
High emissions 2130 3.0 2.0 - 4.3 5.7 9.7 16.1
Low emissions 2140 1.8 0.9 - 3.0 4.5 9.2
High emissions 2140 3.3 2.2 - 4.9 6.5 11.1 18.7
Low emissions 2150 1.9 0.9 - 3.3 5.1 10.6
High emissions 2150 3.7 2.4 - 5.4 7.3 12.7 21.5
STATE OF CALIFORNIA SEA-LEVEL RISE GUIDANCE
APPENDIX 3: SEA-LEVEL RISE PROJECTIONS FOR ALL 12 TIDE GAUGES | 72
TABLE 28: Projected Sea-Level Rise (in feet) for Los Angeles
Probabilistic projections for the height of sea-level rise shown below, along with the
H++ scenario (depicted in blue in the far right column), as seen in the Rising Seas
Report. The H++ projection is a single scenario and does not have an associated
likelihood of occurrence as do the probabilistic projections. Probabilistic projections
are with respect to a baseline of the year 2000, or more specifically the average
relative sea level over 1991 - 2009. High emissions represents RCP 8.5; low emissions
represents RCP 2.6. Recommended projections for use in low, medium-high and
extreme risk aversion decisions are outlined in blue boxes below.
*Most of the available climate model experiments do not extend beyond 2100. The resulting
reduction in model availability causes a small dip in projections between 2100 and 2110, as well as
a shift in uncertainty estimates (see Kopp et al. 2014). Use of 2110 projections should be done with
caution and with acknowledgement of increased uncertainty around these projections.
Newport BeachNewport Beach
Costa MesaCosta MesaCosta MesaCosta MesaHuntington BeachHuntington Beach
¬«1
¬«55
¬«1
¬«55
117°52’30"W
117°52’30"W
117°55’0"W
117°55’0"W
117°57’30"W
117°57’30"W
118°0’0"W
118°0’0"W
33°37’30"N
33°37’30"N
33°35’0"N
33°35’0"N
33°32’30"N
33°32’30"N
33°30’0"N
33°30’0"N
407000mE
407000mE
08
08
09
09
410
410
11
11
12
12
13
13
14
14
15
15
16
16
17
17
18
18
419000mE
419000mE3707000mN37 07000mN08 08
09 09
3710 3710
11 11
12 12
13 13
14 14
15 15
16 16
17 17
18 18
19 19
3720 37203721000mN3721000mN
This information is being made available for informational purposes only. Users of this informationagree by their use to hold blameless the State of California, and its respective officers, employees,
agents, contractors, and subcontractors for any liability associated with its use in any form. This work
shall not be used to assess actual coastal hazards, insurance requirements, or property values
and specifically shall not be used in lieu of Flood Insurance Studies and Flood Insurance Rate Maps issued by the Federal Emergency Management Agency (FEMA).
Data Sources: US Geological Survey, Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Coastal ServicesCenter (CSC), Scripps Institution
of Oceanography, Phillip WIlliams and Associates, Inc. (PWA), US Department of Agriculture (USDA), California Coastal Commission, and National Aeronautics and Space Administration (NASA). Imagery from ESRI and i-cubed.
Created by the Pacific Institute, Oakland, California, 2009.
California Flood Risk: Sea Level Rise
00.511.520.25
Miles
01230.5
Kilometers
1:
2:
3:
4:
5:
6:
7:
8:
Seal Beach
Newport Beach
Tustin
not printed
Laguna Beach
not printed
not printed
not printed867
1 2 3
54
§¨¦
£¤
")
¬«
Interstate
US Highway
State Highway
County Highway
Grid coordinates:
UTM Zone 11N meters
Adjoining Quadrangles:
Map extents match USGS 7.5 minute topographic maps
Project funded by the California Energy Commission’s Public Interest Energy Research Program, CalTrans,and the California Ocean Protection Council
Newport Beach OE S Quadrangle
NAD83 GCS degrees
Coastal Zone Boundary
Current Coastal Base Flood
(approximate 100-year flood extent)
Sea Level Rise Scenario Coastal Base Flood + 1.4 meters (55 inches)
Landward Limit of Erosion High Hazard Zone in 2100
PMA Consulting, Inc.Consulting Structural Engineers28161 Casitas Ct., Laguna Niguel, CA 92677Phone: (714) 717-7542E-Mail: P.Petrov@PMA-BG.comREINFORCING THE EXISTING SEAWALLLOCATED AT:3905 MARCUS AVENUENEWPORT BEACH, CA 92663DOMINIC TUCCIPO BOX 1304NEWPORT BEACH, CA 92659-0304SW-0
APMA Consulting, Inc.Consulting Structural Engineers28161 Casitas Ct., Laguna Niguel, CA 92677Phone: (714) 717-7542E-Mail: P.Petrov@PMA-BG.comREINFORCING THE EXISTING SEAWALLLOCATED AT:3905 MARCUS AVENUENEWPORT BEACH, CA 92663DOMINIC TUCCIPO BOX 1304NEWPORT BEACH, CA 92659-0304SW-1A
(* )(* )NOTE :AAPMA Consulting, Inc.Consulting Structural Engineers28161 Casitas Ct., Laguna Niguel, CA 92677Phone: (714) 717-7542E-Mail: P.Petrov@PMA-BG.comREINFORCING THE EXISTING SEAWALLLOCATED AT:3905 MARCUS AVENUENEWPORT BEACH, CA 92663DOMINIC TUCCIPO BOX 1304NEWPORT BEACH, CA 92659-0304SW-2A