HomeMy WebLinkAbout20171114_Coastal Hazards Analysis Report 10-21-17
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: p.petrov@pma-bg.com
October 21, 2017
Christopher Brandon, Architect
151 Kalmus Drive, Suite G-1
Costa Mesa, CA 92626
COASTAL HAZARDS ANALYSIS REPORT
John & Julie Guida; Applicants
501 Via Lido Soud
City of Newport Beach, County of Orange
PMA Job #19817
Dear Mr. Brandon,
PMA Consulting, Inc., is pleased to provide this Coastal Hazards Analysis Report 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 19 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 of 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.
As reflected on the enclosed Table 1 Sea Level Rise Projection for California (NRC 2012)
and Figure 3.3, over the project’s planning horizon of 75 years, the estimated Sea Level Rise is
between 1.50’ and 5.00’, which is the sea level rise for the proposed project. Based on the highest
high tides of +7.80’MLLW (+7.62’NAVD88) recorded in the project area, the above established
PA2017-239
range of Sea Level Rise will account eventually for bay water levels in the range of
+9.12’NAVD88 and +12.62’NAVD88. It shall be noted, that NRC 2012 may no longer be
considered the best available science for assessing SLR, since the April 2017 “Rising Seas in
California” by the California Ocean Protection Council (COPC) provides more current SLR
estimates within a probability frame work. See enclosed table from COPC 2017.
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.
The top of slab elevation of the proposed development is at +10.40’ NAVD88 which is
above the Base Flood Elevation established for the area, but below the 12.62’NAVD88 elevation
established in Step 1 above. As we well know, majority of the public streets in Newport Bay area
are currently at much lower elevations that the subject site, and will flood due to Sea Level Rise
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 Tide Planes & Tidal Datum – City of Newport
Beach STD-599-L.
According to the enclosed drawings SW-0, SW-1 & SW-2 for the proposed Seawall
Repair/Reinforcing, top of new concrete cap atop seawall wall shall be at +10.40’ NAVD88 (North
American Vertical Datum 1988) which equals +10.58’MLLW. According to the attached Site Plan,
top of 1st floor slab elevation of the proposed development is at +10.40’ NAVD88.
The highest high tides in Newport Beach threaten flooding of low-lying terrain.
Historically, the highest high tides have reached approximately 7.8 ft above MLLW. This has
occurred twice: January 28, 1983 and January 10, 2005.
While sea levels have been rising for decades, higher rates of raise are forecast for the
coming century as a consequence of climate change – see enclosed Sea Level Change Graph.
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 sea level rise generally fall
in the range of 1-3 ft for the year 2100. A United States Environmental Protection Agency study
puts these figures in a probabilistic perspective, suggesting there was a 50% chance that sea level
rise would exceed 0.4, 0.7 and 1.5 ft by 2025, 2050 and 2100, respectively, and a 10% chance that
sea level rise would exceed 0.6, 1.1 and 2.9 ft by 2025, 2050 and 2100, respectively. On August 12,
2015, California Coastal Commission unanimously adopted Sea Level Rise Policy
Guidance: Interpretive Guidelines for Addressing Sea Level Rise in Local Coastal
Programs and Coastal Development Permits. According to this Document, considered The
Best Available Science and Consequences of Sea Level Rise, the sea-level rise projections for
California (NRC 2012) are 1, 2 and 5.5 ft by 2030, 2050 and 2100 respectively. 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.
In order to review the historical tides, Flow Simulations, LLC has obtained tide heights
data form the NOAA (National Oceanic and Atmospheric Administration) Center for Operational
Oceanographic Products and Services (CO-OPS) “Tides and Currents” website, http://co-
ops.nos.noaa.gov/ (Data accessed April, 2008). Year-long records of hourly tide predictions and
PA2017-239
measurements for Station ID: 9410660 (Los Angeles) have been accessed for 1982-2007. In
addition, year-long records of hourly tide predictions have been accessed for 2008-2020. All tide
heights have been saved in units of feet relative to MLLW and relative to GMT (Greenwich Mean
Time). Los Angeles has been chosen because it is the nearest NOAA tide station with tide
measurement data. A review of benchmark data for Los Angeles versus Newport Harbor shows
that tide heights typically differ by less than an inch. For example, NOAA benchmarks data reports
than the mean tide range at Newport Beach harbor is 3.76 ft versus 3.81 ft at Los Angeles, a
difference of 0.05 ft or 0.6 inches.
Hourly NTRs (Non-Tide Residuals) have been obtained for years 1982-2007 by subtracting
the predicted tide heights from the measured tide heights. Positive NTR corresponds to higher tides
than predicted and negative NTR correspond to lower tides than predicted. To characterize the
magnitude and frequency of historical NTRs during the winter season when maximum
astronomical tides occur, hourly NTRs for the months of December, January and February have
been compiled for each year between 1982/83 and 2006/07 and rank ordered. From this ranking
the 98th percentile NTRs have been extracted; this corresponds to 2% exceedance probability.
To further explore the association between NTR and strong El Nino conditions, the 98th
percentile NTR for each winter (2% exceedance probability) has been plotted versus ONI (Oceanic
Nino Index) as shown in the enclosed Figure 3.1 and positive correlation has been identified
(R2 =0.72, p<0.05). The implication for coastal flooding is not only that the probability of coastal
flooding, or flood risk, varies from year to year depending on climatic conditions in addition to
astronomical factors, but that the stronger El Nino the greater the coastal flood risk. There are
important exceptions to this trend, however. Figure 3.1 shows two instances where NTR exceeded
0.5 ft even though ONI values have been between 0 and 1oC corresponding to El Nino neutral or
weak El Nino conditions. On the other hand, Figure 3.1 also shows that 2% exceedance probability
NTR values never exceeded 0.5 ft when ONI values have been less than zero (i.e., during La Nina
conditions). This suggests that coastal flood risk is minimized during La Nina conditions.
The enclosed Figure 3.2 shows the height of monthly maximum high tides through 2020
based on astronomical factors. There are two peaks per year corresponding to maximum high tides
in summer and winter. The graph in Figure 3.2 also reflects the 4.4-year cycle reported by Zetler
and Flick (1985) and Flick (1986).
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 66 inches (5.5 feet)
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. Since 1st floor slab
elevation of the proposed development is at +10.40’ NAVD88, it will remain below the High
Tide to approximately year 2065. Eventually, the existing bulkhead/seawall may have to be
raised in accordance with enclosed STD-601-L, in order to accommodate the actual see level
at that time.
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.
PA2017-239
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 +7.8’MLLW (+7.62’NAVD88) 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. In order 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 change 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 sea level rise
predicted in the next 75 years. If that prediction holds true, the rapid sea level rise may
accelerate shoreline erosion, but it shall not impact the structure on the subject lot over its
economic life.
PA2017-239
CONCLUSION
In conclusion, flooding, wave runup and erosion will not significantly impact this
property over the proposed life of the development. Once the existing seawall is
repaired/reinforced in compliance with the enclosed drawings SW-0, SW-1 & SW-2, need for
a new shoreline protective devise is 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 to 100 years, the bulkhead assembly allows to be
increased in height without further seaward encroachment.
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 give us a
call.
Respectfully submitted,
Plamen Petrov, P.E.
Principal
Enclosures:
Location Map
Aerial View
Table 1 (NRC 2012) & Sea Level Change Graph Figure 3.3
Table from COPC 2017
Topographic Survey
Architectural Site Plan
City of Newport Beach Tide Planes & Tidal Datum – STD-599-L
City of Newport Beach Detail for Raising Bulkheads – STD-601-L
Figure 3.1
Figure 3.2
Newport Beach OE S Quadrangle
Seawall Drawings SW-0 thru SW-2
PA2017-239
PA2017-239
PA2017-239
PA2017-239
PA2017-239
PA2017-239
48'ERTYLINETALLWALL0.5' TALLWALLPOOLDRIVEWAYAC PAVEMENTPROPERTYLINEGMCURB &GUTTERPROPERTYLINEPROPERTYLINEPEQGMEXISTINGBUILDINGEXISTINGBUILDINGSCO24"TREE24"TREE18"TREE6' TALLWALL6' TALLWALL24"TREE24"TREE24TREETREE24"TREE24"TREE24"TREE24"TREE36"TREE8"PALMPCPCPCPC0.5'TALLWALL9.5'TALLWALLPOOLCOVEREASEMENT TO THE CITYOF NEWPORT BEACH FORPUBLIC UTILITY PURPOSES(13 34)(13.32)AC(13.36)AC(13.50)AC(13.00)EG(12.95)EG(12.88)EG(12.78)EG(12.66)FL(12.81)EG(12 77)(13.17)TC(12.61)FL(13.29)TC(12.76)FL(13.33)TC(12.89)FL(13.39)TC(12.91)FL(13.06)FFG(12.90)FS(13.33)FS(10.16)NG(39.65)CHIMNEY TOP(13.07)FS(13.43)FS(13.22)FS(13.42)FF(10.49)FS(10.42)FS(10.45)FF(10.10)NG(13.35)NG(9.66)FS(9.63)FS(10.95)TW(9.49)FS(6.89)NG(6 95)(11.34)FS(9.68)FS(9.63)FS(9.74)FS(10.42)FS(10.31)FS(10.79)FF(10.41)FS(10.49)FS(10.50)FS(10.73)FF(9.26)FS(9.48)FS(9.47)FS(6.15)NG(6.86)NG(7.69)NG(9.06)NG(13.12)FS(13.37)FS(12.93)FS(10.61)FS(37.35)RIDGE(10.42)FS(26.83)CHIMNEY TOP(10.19)FS(10.33)FS(10.78)FF(9.54)NG(10.36)FS(10.26)FS(10.18)FS(9.48)FS(9.49)FS(10.15)NG(13.30)WMVIA LIDOSOUDN17°29'00"E 22.50'N72°31'00"W 69.99'N17°29'00"E 105.00'N17°29'00"E 105.00'N72°31'00"W 69.99'[BASIS OF BEARINGS]℄N72°31'00"W 89.99'LOT 456TRACT NO. 907M.M. 28/25-36LOT 457UPUPDWDWUPUPGREAT ROOMLOUNGEKITCHENB. PANTRYPANTRYWINEGAME ROOMPWDR.POOL BATHDININGPT #1 NEAR BY POINT - 13.28'PT #2 NEAR BY POINT - 12.90'PT #3 NEAR BY POINT - 9.63'PT #4 NEAR BY POINT - 10.33'GRADE PLANE CALC.PT1 - 13.28PT2 - 12.90PT3 - 9.63PT4 - 10.3346.14 / 4 = 11.54S.Y.S.B.4' - 0"S.Y.S.B.4' - 0"R.Y.S.B.4' - 0"F.Y.S.B.10' - 0"PANTRYPWDR.POOL BATHB. PANTRYLOUNGEGREAT ROOMGAME ROOM2-CAR GARAGE2-CAR GARAGEFOYERSTAIRSELEV.WINEDININGKITCHENVIA LIDO SOUDVIA KORONDOCKDECKPOOLSPACOVERED CABANABAR/BUFFETEXT. SHWR. STORAGEEXT. STOR.W. FEAT BY SEP. PERMITDN.DN.SIDE GATETRASH AREAGATEGATEBBQUPUPTRELLIS ABOVE10.40' T.O.S.13.90' T.O.S.1222234454677SLOPE PER CIVILSLOPE PER CIVIL88888889101011121312141515151515151515151515151617171716FIRE PIT BY SEP. PERMIT18191920N72° 31'00"W 69.99'N72°31'00"W 69.99'N17°29'00"E 105.00'N17°29'00"E 105.00'1' - 0"F.O.F.1' - 0 7/8"F.O.F.11 1/8"F.O.F.3' - 7 1/8"F.O.F.4' - 0"4' - 2"F.O.F.8' - 11 7/8"9' - 0 3/8"F.O.F.11' - 0"11' - 0 1/2"F.O.F.4' - 0"4' - 2"F.O.F.4' - 0"4' - 2"F.O.F.6' - 4 1/2"6' - 6 1/2"F.O.F.4' - 0"4' - 0 1/2"F.O.F.6' - 0"6' - 0 1/2"F.O.F.4' - 0"4' - 2"F.O.F.6' - 0"6' - 0 1/2"F.O.F.24' - 5 3/4"24' - 6 1/4"F.O.F.13' - 0 5/8"F.O.F.24' - 5 1/2"24' - 6"F.O.F.11' - 6"11' - 6 1/2"F.O.F.5' - 6"5' - 6 1/2"F.O.F.3' - 10 1/2"4' - 0 1/2"F.O.F.4' - 0"4' - 2"21211' - 1 7/8"21' - 4 1/8"P.L. TO STREET C.L.22' - 6"P.L. TO STREET. C.L.20' - 0"17PLANTEDPOOL EQUIP.BELOWPLANTEDBAJA10.40' T.O.S.81612.10' T.W.15.40' T.G.1515151515151717171717171717171717222212.10' T.W.15.92' T.G.23232313.61' T.W.16.40' T.F.13.61' T.W.16.40' T.F.14.97' T.W.18.43' T.F.14.97' T.W.18.43' T.F.10.40' T.O.S.24CLR.20' - 0"CLR.23' - 0 1/2"CLR.21' - 0"CLR.23' - 0 1/2"999ENCROACHMENT PERMITAGREEMENT IS REQ'D. FOR ANY WORK PROPOSED IN THE PUBLIC R.O.W. ALL NON-STANDARD IMPROVEMENTS SHALL COMPLY WITH CITY COUNCIL POLICY L-6 AND L-18ENCROACHMENT PERMITAGREEMENT IS REQ'D. FOR ANY WORK PROPOSED IN THE PUBLIC R.O.W. ALL NON-STANDARD IMPROVEMENTS SHALL COMPLY WITH CITY COUNCIL POLICY L-6 AND L-1810.31'JOB NO.DATEDOCUMENT VALID UPONORIGINAL SIGNATURESHEET NO.REVISIONSOWNER INFORMATION:PROJECT NAMESTATUSThese documents are the property of BRANDON ARCHITECTS, Christopher Brandon, principal architect, and are not to be duplicated, altered or utilized in any way by any other party without the expressed authorization of BRANDON ARCHITECTS. Any unauthorized duplication or alteration of these documents by any party is a violation of BRANDON ARCHITECTS expressed common law copyright and other property rights thereto, and is subject to full civil liabilities and penalties. These plans are also not to be assigned to any third party without obtaining written authorization and expressed permission by BRANDON ARCHITECTS, who shall then be held harmless and absolved of any liability regarding any use of these documents by such third party, whether depicted or implied hereon.A-0.009/10/201717-501ARCHITECTURAL SITE PLANGUIDA RESIDENCEGUIDA RESIDENCEJOHN & JULIE GUIDA501 VIA LIDO SOUDNEWPORT BEACH, CA92663HOA501 VIA LIDO SOUDNEWPORT BEACH, CA 92663JOB NO.DATEDOCUMENT VALID UPONORIGINAL SIGNATURESHEET NO.REVISIONSOWNER INFORMATION:PROJECT NAMESTATUSThese documents are the property of BRANDON ARCHITECTS, Christopher Brandon, principal architect, and are not to be duplicated, altered or utilized in any way by any other party without the expressed authorization of BRANDON ARCHITECTS. Any unauthorized duplication or alteration of these documents by any party is a violation of BRANDON ARCHITECTS expressed common law copyright and other property rights thereto, and is subject to full civil liabilities and penalties. These plans are also not to be assigned to any third party without obtaining written authorization and expressed permission by BRANDON ARCHITECTS, who shall then be held harmless and absolved of any liability regarding any use of these documents by such third party, whether depicted or implied hereon.A-0.009/10/201717-501ARCHITECTURAL SITE PLANGUIDA RESIDENCEGUIDA RESIDENCEJOHN & JULIE GUIDA501 VIA LIDO SOUDNEWPORT BEACH, CA92663HOA501 VIA LIDO SOUDNEWPORT BEACH, CA 92663KEYNOTE LEGEND1 CENTERLINE OF STREET2 PROPERTY LINE3 FRONT YARD SETBACK4 SIDE YARD SETBACK5 REAR YARD SETBACK6GUTTER7 NEW DRIVEWAY APPROACH & CURB CUT - REF. CIVIL DWGS.8 OUTLINE OF EXISTING STRUCTURE TO BE REMOVED9 LINE OF ROOF ABOVE10 LINE OF BALCONY ABOVE11 TRASH LOCATION - SCREEN FROM STREET AS NEEDED12 (E.) GAS METER LOCATION13 (E.) SEWER C.O. LOCATION14 (E.) WATER METER LOCATION TO BE REMOVED (REF. SURVEY & CIVIL DWGS.)15 (E.) ON-SITE TREE TO BE REMOVED16 (N.) GATE - PER LANDSCAPE DESIGNER (MAX. 6' HT. ABOVE NATURAL GRADE)17 (N.) ON-SITE TREE SPECIMEN - VERIFY SPECIES & LOC'N. W/. OWNER & LANDSCAPE ARCH.18 (E.) EASEMENT TO THE C.N.B. FOR PUBLIC UTILITY PURPOSES19 EXTERIOR SHOWER TO BE COLD WATER ONLY-CONNECT TO AREA DRAINAGE ONLY20 (N.) CARRIAGE WALK, PERMEABLE SURFACE, COORD. W/. LAND. DESIGNER21 MAIN SERVICE PANEL, 600 AMP MAX. (MAINTAIN 36" CLEAR FROM FACE OF PANEL TO ANY OBSTRUCTION)22 (E.) STREET TREE TO REMAIN - PROTECT IN PLACE23 (E.) PROPERTY LINE WALL TO REMAIN24 VEHICLE - MINIMUM PARKING DIMENSIONS ON PLANSTRUE NORTHDIMENSION NOTE:ALL DIMENSIONS ARE TO FACE OF SHEATHING (EXT. WALLS) OR FACE OF STRUCTURE (F.O.S.) TYP. U.N.O. ROUNDED TO THE NEAREST 1/8" - CONTACT ARCHITECT IN WRITING FOR ANY CLARIFICATION OF NOTED DIMENSIONS, DO NOT SCALE PLANS.PROJECT NORTHLANDSCAPE NOTES:1. ENCOARCHMENT PERMIT REQ'D. FOR ANY WORK PROPOSED IN THE PUBLIC R.O.W.2. IF APPLICABLE, REF. PRELIMINARY LANSCAPE PLAN, FOR ALL HARDSCAPE & PLANTING AREAS WITH REPECTIVE HEIGHTS AND MATERIALS.NOTE:SEE SHEET A-3.0 FOR ROOF PLAN INFORMATION NOT SHOWN ON THIS SHEET (INCLUDING EAVE DETAILS AND PROJECTION DISTANCES).C.N.B. NOTES:1. ISSUANCE OF A BUILDING PERMIT BY THE CITY OF NEWPORT BEACH DOES NOT RELIEVE APPLICANTS OF THE LEGAL REQUIREMENTS TO OBSERVE COVENANTS, CONDITIONS AND RESTRICTIONS WHICH MAY BE RECORDED AGAINST THE PROPERTY OR TO OBTAIN PLANS YOU SHOULD CONTACT YOUR COMMUNITY ASSOCIATIONS PRIOR TO COMMENCEMENT OF ANY CONSTRUCTION AUTHORIZED BY THIS PERMIT.2. PRIOR TO PERFORMING ANY WORK IN THE CITY RIGHT-OF-WAY AN ENCROACHMENT PERMIT MUST BE OBTAINED FROM THE PUBLIC WORKS DEPARTMENT.3. A CAL-OSHA PERMIT IS REQUIRED FOR EXCAVATIONS DEEPER THAN 5' AND FOR SHORING AND UNDERPINNING. 1/8" = 1'-0"1GRADE PLANE EXHIBITNO. REVISION DATENO. REVISION DATE 3/16" = 1'-0"2ARCHITECTURAL SITE PLANPA2017-239
PA2017-239
PA2017-239
PA2017-239
PA2017-239
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
PA2017-239
PA2017-239
N72°31'00"W 69.99'N17°29'00"E 105.00'N17°29'00"E 105.00'POOL & SPA UNDER SEPARATE PERMITFF (T.O.SLAB) = 10.40'(E) PLATFORM15'-1 1/4"15'-1 1/4"15'-1 1/4"15'-1 1/4"PROPERTY LINE(E) BLOCK WALL TO REMAIN UNCHANGED24'-5 3/4"4'-0"±4'-0" ±(N) BLDG UNDER SEPARATE PERMITPROPERTY LINEPROPERTY LINE(N) CAST-IN-PLACE CONC CAP ATOP (E) SEAWALLVFOR SEAWALLELEVATION-69'-11 3/4"(E) BLOCK WALL TO REMAIN UNCHANGED(N) 24"Ø CONC CAISSON W/ (6)#6 VERT & #4 CLOSED TIES @ 6" O.C. TYP(N) 1"Ø DYWIDAG THREADED TIE-ROD, TYP (TOTAL OF 5)KSW-2TYP17'-6" ±17'-6" ±(E) BUTTRESS WALL WHERE OCCURS TYP4'-9 1/2"4'-9 1/2"DATUM0' - 0"DATUM0' - 0"T.O. (N) CONC CAP10' - 4"T.O. (N) CONC CAP10' - 4"(N) CONC CAISSON BEYOND, TYP(N) TEMPERED GLASS GUARDRAIL(N) CAST-IN-PLACE CONC CAP(N) ANCHOR CONN, TYPPROPERTY LINE(E) DREDGE LINE/MUDLINEPROPERTY LINE(E) CONC SEAWALL TO REMAINKSW-2(E) SEAWALL, SEE SITE PLAN FOR LENGTH(E) PUBLIC BEACH(E) SEAWALL TO REMAIN & BE PROTECTEDNOTE: VERIFY ALL ELEVATIONSPMA Consulting, Inc.Consulting Structural Engineers28161 Casitas Ct., Laguna Niguel, CA 92677Phone: (714) 717-7542E-Mail: P.Petrov@PMA-BG.comNo.C 66947REGISTEREDPROFESSIONALENGINEER
PLAMENPE TROV
OEASTTFFILACVICLIINROASSIBOROV DRAWNJOB NO.SHEETDATEOFCHECKEDOWNER / APPLICANT08/01/2017PMA CONSULTING, INC.OWNERSHIP OF DOCUMENTSDRAWINGS AND SPECIFICATIONS AS INSTRUMENTS OF SERVICE ARE AND SHALL REMAIN THE PROPERTY OF THE ENGINEER WHETHER THE PROJECT FOR WHICH THEY ARE MADE IS EXECUTED OR NOT. THEY ARE NOT TO BE USED BY THE OWNER ON OTHER PROJECTS OR EXTENSIONS TO THIS PROJECT EXCEPT BY THE AGREEMENT IN WRITING AND WITH APPROPRIATE COMPENSATION TO THE ENGINEER.10/21/2017 8:24:53 AMSW-1SITE PLAN/CAISSONS LAYOUT1981710/21/2017P.PETROVM.PETROVA10/21/2017JOHN & JULIE GUIDA501 VIA LIDO SOUDNEWPORT BEACH, CA 92663SEAWALL AT GUIDA RESIDENCE501 VIA LIDO SOUDNEWPORT BEACH, CA 92663 3/16" = 1'-0"SITE PLAN/CAISSONS LAYOUTQ 3/16" = 1'-0"SEAWALL ELEVATIONV501 VIA LIDO SOUDAPPLY DETAIL AT THE ENTIRE PERIMETER OF ANY EXCAVATED MATERIAL PILED UP AT THE PROJECT SITE IN COMPLIAQNCE WITH ITEM 6 UNDER "EROSION CONTROL NOTES" ON SHEET SW-0.PSW-2NORTHNO.REVISIONDATEPRIOR TO POURING CONCRETE & AFTER TIE-BACKS INSTALLATION IS COMPLETEDSTEM WALL, CAISSONS & TIE-BACKSPA2017-239
PA2017-239