HomeMy WebLinkAboutCT 15-06; THE WAVE; PRELIMINARY SUMMARY GEOTECHNICAL EVALUATION; 2015-08-19•
Geotechnical • Geologic • Coastal • Environmental
5741 Palmer Way • Carlsbad, California 92010 • (760) 438-3155 • FAX (760) 931-0915 • www.geosoilsinc.com
August 19, 2015
W.O. 6935-A-SC
Mr. Michael Donovan
4629 Cass Street, Suite 255
San Diego, California 92109
Subject: Preliminary Summary of Geotechnical Evaluation, "The Wave,"
2646 State Street, Carlsbad, San Diego County, California.
References: 1. "Architectural Drawings for: 2646 State Street," File No. 10-111, dated March 2, 2015, by
MAA Design Group.
2. "Geologic Map of the Oceanside 30' by 60' Quadrangle, California, Regional Map Series,"
scale 1:100,000, California Geologic Survey and United States Geological Survey, dated
2005, by Kennedy, M.P., and Tan, SS.
Dear Mr. Donovan:
This letter presents a summary of GeoSoils, lnc.'s (GSl's) preliminary findings of our in-
progress geotechnical evaluation of the subject site, relative to the proposed mixed-use
(i.e., commercial and residential) development shown on Reference No. 1 A complete
synopsis of our findings, conclusions, and recommendations with respect to the currently
proposed development on this site is forthcoming. The preliminary findings, described
herein, are based on a review of existing, nearby geotechnical data and observations made
during our recent subsurface exploration and regional mapping by others (see Reference
No. 2). It should be noted that the preliminary findings were made without the benefit of
the results of in-progress laboratory testing and associated analyses.
Based on our review of the available data, and our experience in the vicinity, the proposed
development of the subject property appears to be feasible from a geotechnical viewpoint.
A summary of our preliminary findings are presented as follows:
• In general, the relatively flat-lying site appears to be underlain with Quaternary-age,
older paralic deposits, with older, Eocene-age deposits of sedimentary bedrock at
depth. Based on our observation of the vicinity, the contact between these two
formational deposits is anticipated at a depth of approximately 20 to 30 feet below
existing grades. A surficial layer of relatively loose colluvial topsoil is anticipated to
mantle the site, within about 2 to 3 feet from the surface. All colluvium and any
weathered portions of the old paralic deposits are typically considered unsuitable
for support of settlement-sensitive improvements and planned fills (if any) in their
existing state.
• Our evaluation indicates that the regional groundwater table generally occurs near
sea level (approximately 40 feet below the site). However, a perched water table
is anticipated along th~ contact between paralic deposits, and the underlying
Eocene-age sedimentary bedrock, at a depth of about 20 to 30 feet below existing
grades. Provided that the recommendations contained in our forthcoming
geotechnical evaluation are followed, regional groundwater is not expected to be
a major factor in development of the site.
• Onsite soils generally appear to consist of silty sands, and are anticipated to be
very low expansive (Expansion index [E.I.] less than 20). However, the occurrence
of localized lenses of finer grained, higher expansive materials, within the influence
of proposed building walls and foundations, cannot be entirely precluded.
• Due to the proximity to a near shore saline environment, corrosive soil conditions
to both metal and concrete should be anticipated.
• Due to the depth of planned excavations, shored excavation walls appear necessary
for basement level construction.
• GSl's review of available geologic data (Reference No. 2) indicates no known active
faults are mapped crossing the site, and the site is not located within an Alquist-
Priolo Earthquake Fault Zone. The subject site is situated in a seismically active
region. As is typical in southern California, the site may experience moderate to
strong ground shaking should an earthquake occur on any of the regional active
faults.
• Based on our review, the subject site is not located on a mapped landslide
(Reference No. 2). Other adverse geologic structures that would preclude project
feasibility were not noted in our preliminary review.
The preliminary · conclusions and recommendations presented herein are professional
opinions. These opinions have been derived in accordance with current standards of
practice, and no warranty, either express or implied, is given. Standards of practice are
subject to change with time. GSI assumes no responsibility or liability for work or testing
performed by others, or their inaction; or work performed when GSI is not requested to be
onsite, to evaluate if our recommendations have been properly implemented. Use of this
report constitutes an agreement and consent by the user to all the limitations outlined
above, notwithstanding any other agreements that may be in place.
Mr. Michael Donovan
2646 State Street, Carlsbad
File:e:\wp12\6900\6935a.pso GeoSoils, Inc.
W.O. 6935-A-SC
August 19, 2015
Page 2
The opportunity to be of service is sincerely appreciated. If you should have any
questions, please do not hesitate to contact our office.
Respectfully submitted,
GeoSoils, Inc.
Robert G. Crisman
A~
Andrew T. Guatelli
Engineering Geologist, CEG 1934 Geotechnical Engineer, GE 2320
RGC/JPF/ATG/jh
Distribution: (1) Addressee (electronic copy)
Mr. Michael Donovan
2646 State Street, Carlsbad
File:e:\wp12\6900\6935a.pso GeoSoils, Inc.
W.O. 6935-A-SC
August 19, 2015
Page 3
~ Ka.S ENGINEERING, INC.
Planning Engineering Surveying
HYDROLOGY STUDY
FOR
THE WAVE
4262 ST ATE STREET
CARLSBAD, CA 92008
IN
CITY OF CARLSBAD
JN 15-009
April 29, 2015
780 I Mission Center Court, Suite 100 . San Diego, California 92108 . (619)296-5565 . Fax (619)296-5564
•
TABLE OF CONTENTS
l.SITE DESCRIPTION
2.HYDROLOGY DESIGN MODELS
3.HYDROLOGIC CALCULATIONS .......................... APPENDIX A
4.TABLES AND CHARTS .............•....•.........•.•. APPENDIX B
5.HYDROLOGY MAPS ................................... APPENDIX C
1. SITE DESCRIPTION
EXISTING CONDITION
EXISTING 0.24 ACRES PROPERTY CONSIST OF ONE LOT WITH ONE RESIDENTIAL
BUILDING, ONE SHED AND LANDSCAPING. THERE ARE NO OFFSITE DRAINAGE
ENTERING THE SITE. THE ENTIRE SURFACE RUNOFF DRAIN ONTO STATE
STREET, WHICH EVENTUALLY DISCHARGE TO BUENA VISTA LAGOON.
PROPOSED CONDITION
PROPOSED PROJECT CONSIST OF ONE RESIDENTIAL BUILDING COVERING 95%
OF THE SITE. THE RUNOFF FROM THIS PROJECT IS CONTROLLED THROUGH
ROOF GUTTERS AND DOWNSPOUTS WITH THE USE OF FLOW THROUGH
PLANTERS. THE ENTIRE SITE WILL FLOW TO STATE STREET AND CONNECT TO
THE EXISTING UNDERGROUND STORM DRAIN SYSYTEM THROUGH PROPOSED
STORM DRAIN PIPE.
THIS PROJECT IS EXEMPT FROM HYDROMODIFICATION ACCORDING TO THE
ANALYSIS FOR SELECTED CARLSBAD WATERSHEDS PREPARED BY CHANG
CONSULTANTS DATED JUNE 10, 2013.
2. HYDROLOGY DESIGN MODELS
A. DESIGN METHODS
THE RATIONAL METHOD IS USED IN THIS HYDROLOGY STUDY; THE RATIONAL FORMULA IS AS
FOLLOWS:
Q = CIA, WHERE : Q= PEAK DISCHARGE IN CUBIC FEET/SECOND*
C = RUNOFF COEFFICIENT (DIMENSIONLESS)
I = RAINFALL INTENSITY IN INCHES/HOUR
A= TRIBUTARY DRAINAGE AREA IN ACRES
"1 ACRE INCHES/HOUR = 1.008 CUBIC FEET/SEC
THE URBAN OVERLAND WATERSHED METHOD IS ALSO USED IN THIS HYDROLOGY STUDY; THE
URBAN OVERLAND WATERSHED FLOW FORMULA IS AS FOLLOWS:
Tc=1.8(1.1-C)(L)·5/[S(100)l333
L = OVERLAND TRAVEL DISTANCE IN FEET
S = SLOPE IN FT./FT.
Tc= TIME IN MINUTES
B. DESIGN CRITERIA
-FREQUENCY, 100 YEAR STORM.
-LAND USE PER SPECIFIC PLAN.
-RAIN FALL INTENSITY PER COUNTY OF SAN DIEGO 2003 HYDROLOGY DESIGN MANUAL
C. REFERENCES
-COUNTY OF SAN DIEGO 2003, HYDROLOGY MANUAL.
-COUNTY OF SAN DIEGO 2012 REGIONAL STANDARD DRAWING.
-HAND BOOK OF HYDRAULICS BY BRA TER & KING, SIXTH EDITION.
APPENDIX A
(3. HYDROLOGIC CALCULATIONS)
~ K•S ENGINEERING, INC.
~, Planning Engineering Surveying
7801 fvlission Cenler Court, Suite 100 • San Diego, CA 92 l 08
(619) 296-5565 Fax (619) 296-5564
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tmp#2.txt
Manning Pipe Calculator
Given Input Data:
Shape ........................... Circular
Solving for ....•.•............ .. Depth of Flow
Diameter ........................ 18.0000 in
Flowrote ........................ 0.4800 cfs
Slope ........................... 0.2100 ft/ft
Manning's n ..................... 0.0130
Computed Results:
Depth ........................... 1.2686 in
Area .................... .......• 1. 7671 ft2
Wetted Area . .. .... .............. 0.0549 ft2
Wetted Perimeter ................ 9.6731 in
Perimeter ....................... 56.5487 in
Velocity ........................ 8.7389 fps
Hydraulic Radius ................ 0.8177 in
Percent Full .................... 7.0477 %
Full flow Flowrate .............. 48.1369 cfs
Full flaw velocity .............. 27.2399 fps
Critical Information
Critical depth .................. 3.0761 in
Critical slope .................. 0.0052 ft/ft
Critical velocity ............... 2.3914 fps
Critical area ................... 0.2007 ft2
Critical perimeter ...... ........ 15.3424 in
Critical hydraulic radius ....... 1.8839 in
Critical top width .............. 13.5510 in
Specific energy ................. 1.2925 ft
Minimum energy .................. 0.3845 ft
Froude number ................... 5. 7603
Flow condition .................. Supercritical
Page 1
APPENDIX B
(4. TABLES AND CHARTS)
l f
' .......
Averaae Values of Rouahness Coefficient ·(Mannina's n)
ITP• of Waterway
1. Closed Conduits (1) .
Steel (not lined)
Cast Iron
Al\111inUl1
Cornasated Metal (not lined3
Corruaated Metal (2) (SJIIOOth asphalt quarterlinin&)
Corruaated Mnal (2) (aaooUl asphalt half linin1)
Corrusated Netal (smooth asphalt full linina)
Concrete JlCP
Clay (sew.er)
Asbestos C•ent-,J: Pvc:...
Drfin Tile (terracotta)
Cast-in-place Pipe
Reinforced Concrete Bo~
2. Open Cha.Mel! ll)
.i.. Unlined
Clay LoUi
Sand
b, Revetted
Guvel
Rock
Pipe· a.nd Wirt
Sacked Concrete
c. Lined ,
COJ(crete (poured)
Ai~ Blown Monar (3)
Aspbaltic Concrete or Bitunainous Plant Mi~
d. VeLetated {S)
Grass lined. ••intained
Gra1s a:nd Weeds
Grass lined vith concrete lov flow thanntl
3. Pavement and ~utters (1)
Concrete
11 tuainous. _(pl_ant.-11bed)
Rouahness
Coefficient (n)
O.OlS
0,015
.021
0.024
0.021
0,018
0.012.
0.012
0.013
0.011
O.OlS
0.01s
0.014
0,023
0.020
o.oso
0.040
0.02s
0.025
o:oi4
0.016
0.018
.o:ss
.04S
.032
0.015 o.ou~
Type of Waterway
4. Depressed Medians (lO:l slopes(l)
Earth (without growth)
Earth (with growth)
· :Gravel
5. Natural Streams(4)
Roughness
Coefficient (r)
0.040
0.050
0.055
a. Minor streams (surface width at flood stage< lOO ft)
(I) Fafrly regular se~tJon
(e) Some grass and weeds, lfttle or no brush
(b) Dense growth of weeds, depth of flow
b,
materially greater than weed height
(c} Some weeds. lfght brush on banks
(d) Some weeds, heavy brush on banks
(e) For t.rees within channel with branches
submerged at high stage, lncreas~ all
above values by O.OIS
(2) lrregulu section, wfth pools, 51fght channel
meander
Channels (a) to (e) above. increase all
values by 0.015
(3) Mountain streams; no vegetation in channel,
banks usually steep, trees and brush along
banks submerged at high stage
(a) Bottom, gravel, cobbles and few boulo~rs
(b) Bottom, cobbles with l&rge boutd~r~
Flood plains (adjacent to natural stre.an,s)
(l) Pasture\ no brush
(a) Short grass
(b) Hl gh grass
(2) Cultfvated. ateas
(a) No erop
(b) Mature row crops
(c) Mature field crops
(3) Heavy weeds, scattered brush (4) Light brush a~d trees
(5) Medium to de~se brush
(6) Dense wl l lows
o.o;o
0.(.140
0.040
o. 060
0,D50
0. 06U
0.030
0.040
0.040
0.040
0.050 o.osc
0.060
0.090
0, 170
( 7) Cleared land with tree stumps, l00-150 per acre 0.060 on Heavy sta"d of ttmber, lltt1~ undetgrowth
(a) Flood deoth below branches 0.110
{b) Flood depth reaches branches 0.140
APPENDIX XV! 8
. ' i~i~ ..-: \,.'f'" ! . ..
f
£r111st F. Brater and. Horace WIiiiams King
Table 7-J 4. Valnrs of A' 1 for Circular Chon nds in 1 Jw Fonnu!r~
i
D :a depi.h of w&trr d -= <li:1.111,·~·r c,f cha.uncl .. ------------
d .00 .01 .02 .0.5 .OG .03 .04
---· -------------
•
. 0 .00007 .00031 .00074•.00138•.00222 .00328 .00-&5t» .OOC.04·.0077:-
.l .OOOC.7 .0118 .0142 .Olf,7 .Ol!f5 .0225 .0257 .02!Jl .0327 .03fiG
_ .2 .p..&.OG .0448 .0-192 .0537 .058,:; .003-1 .0080 .0738 .07H3 ,0849
.3 .0907 .09fif\ .10:?7 .l08!J .1153 .1218 .1284 .1352 .1420 .14UO
.4 .1561 .1033 .1705 .177!J .185,A .1920 .2005 .2082 .21GO .2238
.5 .232
.6 .3l i
.7 .388
.8 .456 .9 .,9"
&.O .463
. ••
.230 .2-&i' .25.5
.3H) .327 .335
;395 .-102 .400
• .f58 .f63 jAG8
.496 -~97 ..&98
.2C.3 .271 .279 .287 .?.95 .303
.343 .350 .358 .36fi .373 .380
.416 .422 .42~ .435 .H l .U7
.473 .477 .481 .485 .488 ·-'91
.-W8 .498 .490·•" .,94 .480 ,f83
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EQUATION
I = 7.44 Pe D-0·645
I • Intensity (in/hr)
Pe = 6-Hour Precipitation (in)
D = Duration (min)
-... ....
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Intensity-Duration Dealgn Chart • Template
,..._..,M,,.,,,,;z,~,'"""-"'''''"=..;'.ie.-........-~ ··--'L·-,., ' ~, --
Dnctlons for Appllcatlon:
(1) From precipitation maps determine 6 hr and 24 hr amounts
for the selected frequency. These maps are Included in the
County Hydrology Manual (10, 50, and 100 yr maps included
In the Design and Procedure Manual) .
(2) Adjust 6 hr precipitation (if necessary) so that it is within
the range of 45% to 65% of the 24 hr precipitation (not
applicaple to Desert).
(3) Plot 6 hr precipitation on the right side of the chart.
(4) Draw a line through the point parallel to the plotted lines.
(5) This line is the intensity-duration curve for the location
being analyzed.
Application Fonn:
(a) Selected frequency~ year
(b) Ps = 2.6 in p24 = 4.4 ~ = 59.09 a, (2! --., --•p _,o 24
(c) Adjusted P6<2l = __ in.
(d) 1x"' __ min .
(e) I = __ in.lhr.
Note: This chart replaces the Intensity-Duration-Frequency
curves used since 1965.
Lill
·-,,-,,_,_.,.--.,,,""'~------
San Diego County Hydrology Manual
Date: June 2003
--~ .... ·. ~.u '·,:&.··.------------
Table 3-1
-• -. ·;:~.·:.r..:--~v,,,-:,.·,,-,~""""' ______ _
Section:
Page:
RUNOFF COEFFICIENTS FOR URBAN AREAS
Land Use Runoff Coefficient "C"
Soil T;l:'.ee
NRCS Elements Coun Elements % IMPER. A B C
Undisturbed Natural Terrain (Natural) Permanent Open Space O* 0.20 0.25 0.30
Low Density Residential (LOR) Residential, 1.0 DU/ A or less 10 0.27 0.32 0.36
Low Density Residential (LOR) Residential, 2.0 DU/A or less 20 0.34 0 0.42
Low Density Residential (LDR) Residential, 2.9 DU/A or less 25 0.38 0.41 0.45
Medium Density Residential (MDR) Residential, 4.3 DU/A or less 30 0.41 0.45 0.48
Medium Density Residential (MDR) Residential, 7 .3 DU/ A or less 40 0.48 0.51 0.54
Medium Density Residential (MDR) Residential, 10.9 DU/A or less 45 0.52 0.54 0.57
Medium Density Residential (MOR) Residential, 14.5 DU/A or less 50 0.55 0.58 0.60
High Density Residential (HDR) Residential, 24.0 DU/A or less 65 0.66 0.67 0.69
High Density Residential (HOR) Residential, 43.0 DU/A or less 80 0.76 ~ 0.78
Commercial/Industrial (N. Com) Neighborhood Commercial 80 0.76 0.77 0.78
Commercial/Industrial (G. Com) General Commercial 85 0.80 0.80 0.81
Commercial/Industrial (O.P. Com) Office Professional/Commercial 90 0.83 0.84 0.84
Commercial/Industrial (Limited 1.) Limited Industrial 90 0.83 0.84 0.84
Commercial/Industrial (General I.) General Industrial 95 0.87 0.87 0.87
3
6 of26
D
0.35
0.41
0.46
0.49
0.52
0.57
0.60
0.63
0.71
0.79
0.79
0.82
0.85
0.85
0.87
*The values associated with 0% impervious may be used for direct calculation of the runoff coefficient as described in Section 3.1.2 (representing the pervious runoff
coefficient, Cp, for the soil type), or for areas that will remain undisturbed in perpetuity. Justification must be given that the area will remain natural forever (e.g., the area
is located in Cleveland National Forest).
DU/ A = dwelling units per acre
NRCS = National Resources Conservation Service
3-6
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467195
"67195
467204 46721J ,w;mz
467204 46721.3 467222
Map Scale: 1 :393 t pmtEd on A landscape ( 11" X 8.5'') sheet
Soil Map-San Diego County Area, California
(2646 STATE STREET)
467231 467240
~ A -------======--------------=============Melels 0 5 10 20 30 ------=====:o-----------========-~Feet O 15 30 60 90
Map projedjon: Web Meramr O>mer ax,ftlilaa!s: WG5B4 Edge tics: VIM lone llN WGS84
Natural Resources
Conservation Service
Web Soil Survey
National Cooperative Soil Survey
467249 ,w;7258 467267 467276
"' I J)•9'4!i"N
I
I
I lll
I
I
;;; I no 9'4TN
4128/2015
Page 1 of 3
•
-·"-"""'·'""·""'"''~·"*"''"""'~ ... ;,,~-. .,_._
Soil Map-San Diego County Area, California
(2646 STATE STREET)
MAP LEGEND MAP INFORMATION
Area of Interest (AOI)
D Area of Interest (AOI)
Soils
LJ Soil Map Unit Polygons _.,,, Soil Map Unit Lines
• Soil Map Unit Points
Special Point Features
4d
II
)C
(j
X
0
A. • ~
0
0
V
+ .. -~ • ,,
Natural Resources
Conservation Service
Blowout
Borrow Prt
Clay Spot
Closed Depression
Gravel Pit
Gravelly Spot
Landfill
Lava Flow
Marsh or swamp
Mine or Quarry
Miscellaneous Water
Perennial Water
Rock Outcrop
Saline Spot
Sandy Spot
Severely Eroded Spot
Sinkhole
Slide or Slip
SodicSpot
• Spo~ Area
0 Stony Spot
m Very Stony Spot
"J Wet Spot
t. Other
-· Special Line Features
Water Features
~-·-' Streams and Canals
Transportation ..... Rails _,,, Interstate Highways -US Routes
Major Roads
Local Roads
Background • Aerial Photography
Web Soil Survey
National Cooperative Soil Survey
The soil surveys that comprise your AOI were mapped at 1 :24,000.
-----------------------. ~] · Warning: Soil Map may not be valid at this scale.
Enlargement of maps beyond the scale of mapping can cause
misunderstanding of the detail of mapping and accuracy of soil line
placement. The maps do not show the small areas of contrasting
soils that could have been shown at a more detailed scale. -----------·----------------------·····--
Please rely on the bar scale on each map sheet for map
measurements.
Source of Map: Natural Resources Conservation Service
Web Soft Survey URL: http://websoilsurvey.nrcs.usda.gov
Coordinate System: Web Mercator (EPSG:3857)
Maps from the Web Soil Survey are based on the Web Mercator
projection, which preserves direction and shape but distorts
distance and area. A projection that preserves area, such as the
Albers equal-area conic projection, should be used if more accurate
calculations of distance or area are required.
This product is generated from the USDA-NRCS certified data as of
the version date(s) listed below .
Soil Survey Area:
Survey Area Data:
San Diego County Area. California
Version 8, Sep 17, 2014
Soil map units are labeled (as space allows) for map scales 1 :50,000
or larger.
Date(s) aerial images were photographed: Nov 3, 2014-Nov 22,
2014
The orthophoto or other base map on which the soil lines were
compiled and digitized probably differs from the background
imagery displayed on these maps. As a result, some minor shifting
of map unit boundaries may be evident.
4/28/2015
Page 2of3
·-·---·----------------
Soll Map-San Diego County Alea, Callfomia
•
Map Unit Legend
MIC
Totals for Area of Interest
Natural Resources
Conservation Service
Marina loamy coarse sand, 2 to
9 percent slopes
Web son Survey
National Cooperative Soll Survey
0.3
0.3
2646 STATE STREET
100.0%
100.0%
4/2812015
Page 3 of3
Map Unit Description: Marina loamy coarse sand, 2 to 9 percent slopes-San Diego County Area,
California
San Diego County Area, California
MIC-Marina loamy coarse sand, 2 to 9 percent slopes
Natural Resources
Conservation Service
Map Unit Setting
National map unit symbol: hbdz
Mean annual air temperature: 57 to 61 degrees F
Farmland classification: Prime farmland if irrigated
Map Unit Composition
Marina and similar soils: 85 percent
Minor components: 15 percent
Estimates are based on observations, descriptions, and transects of the
mapunit.
Description of Marina
Setting
Landform: Ridges
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Eolian sands derived from mixed sources
Typical profile
H1 -0 to 10 inches: loamy coarse sand
H2 -10 to 57 inches: loamy sand, loamy coarse sand
H2 -10 to 57 inches: sand, coarse sand
H3 -57 to 60 inches:
H3 -57 to 60 inches:
Properties and qualities
Slope: 2 to 9 percent
Depth to restrictive feature: More than 80 inches
Natural drainage class: Somewhat excessively drained
Runoff class: Medium
Capacity of the most limiting layer to transmit water (Ksat):
Moderately high to high (0.57 to 1.98 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Salinity, maximum in profile: Nonsaline to very slightly saline (0.0 to
2.0 mmhos/cm)
Available water storage in profile: Moderate (about 8.7 inches)
Interpretive groups
Land capability classification (irrigated): 3s
t aod cap~bili~ cta::u:::1·00 fnonlrrigated): 4e
Hydrolog1c Soil Gr~~:--~-"'"--_
Minor Components
Carlsbad
Percent of map unit: 5 percent
Web Soil Survey
National Cooperative Soil Survey
2646 STATE STREET
4/28/2015
Page 1 of 2
I
Map Unit Description: Marina loamy coarse sand, 2 to 9 percent slopes-San Diego County Area,
California
II
Chesterton
Percent of map unit: 5 percent
Corralltos
Percent of map unit: 5 percent
Data Source Information
Soil Survey Area:
Survey Area Data:
Natural Resources
Conservation Service
San Diego County Area, California
Version 8, Sep 17, 2014
Web Soil Survey
National Cooperative Soil Survey
2646 STATE STREET
4/28/2015
Page 2 of2
I
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Receiving 'Wat.er, and Conveyance Systems Exempt
frQm Hydromod1ffcatlon Management Requirements Exhibit Date: Sept. e. 2014 Geosyntec" UICMS 0 .,., ... 1 1111, i::
• MAP SCALE 1" s 500'
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PANE1. 0711G
FLOOD INSURANCE RATE MAP
SA'i DIEGO COUNTY.
CALIFORNIA ,,n INCORPORATtn \KUS
PANEL 761 OF 2375
,sec 1r,,1...,, ,,.oo, rQR r1Au PAHtL 1,J,,l'O,.. ... ,
~ . ...,. ""-llllf't"' ···.:.. ':\·•·
• ..... , _______ ,.. ,#• ..... _ ..... ,. .......... ~·-,---·· ... ····. ..... -............. . • -.
MAP NUMBER
06073C0761G
MAP REVISED
MAY H.2012
h dr,el I •"1!'"•'' \l•ltQ.f'ffte1tl \tt111f',
~ •• ~ .. .._"' • ..,.._(JI_ ....... ,,.._,_.._ .....• _ .......... _,,.-. • .,.,..C.ifN .... _._ ..... ,.._.........,.
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APPENDIX C
(5. HYDROLOGY MAP)
•
TENTATIVE MAP-"THE WAVE"
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(I ~ 1~ .. "' -------GRAPHIC SCALE: 1• • 10'
IF PLAN SIZE IS lESS 'fflAH 24"x38\ TIUS
IS A REDUCED COPY. SCALE PLAN ACCORDINGLY.
EXISTING CONDITION
WORK
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SHEET 2 OF 2 SHEETS
\jfV1Pl"IC: :S:CAL.E: 1• • iU'
IF PLAN SIZE IS LESS THAN 24Rx36•, THIS
JS A REDUCED COPY. SCALE PLAN
ACCORDINGLY.
PROPOSED CONDITION
ENGINEER OF WORK
IIEl K&S ENGINEERING, INC • ..:i-·-·-==--· 1ll1 llhsiOII Cer.it, C,,urt. ~ui!e 100 Sun Oi~ao, CA 921Qa
(619} 29b 5555 t\n; (619) 296-5)6~
~~~~~~~~~~~-=~ ·~.._,""""'"""""··-·=-""""'·=··=··~~ ... =•·•·,,..,,.,,,..,....,-,-.,--~--.~~~~~~~~~~~~--~----------------------........................... .......