HomeMy WebLinkAboutSUP 2022-0001; OMNI LA COSTA GOLF COURSE RENOVATION; GEOTECHNICAL RESPONSE; 2022-10-10
Project No. T2754-22-04
October 10, 2022
LC Investments 2010, LLC
d/b/a Omni La Costa Resort & Spa
4001 Maple Avenue, Suite 300
Dallas, Texas 75219
Attention: Mr. Clint Gulick
Subject: GEOTECHNICAL RESPONSE
GEOTECHNICAL REPORT REVIEW LETTER DATED SEPTEMBER 28, 2022
OMNI LA COSTA GOLF COURSE
GRADING PERMIT NO. GR2022-0038, PROJECT ID: SUP2022-0001
CARLSBAD, CALIFORNIA
References: 1. Geotechnical Report Review, Omni La Costa Golf Course (1st review) dated
September 28, 2022, prepared by the City of Carlsbad.
2. Rough Grading Plan for Omni Resort Golf Course, Sheets 1 through 22, dated
September 1, 2022, prepared by O’Day Consultants
3. Limited Geotechnical Investigation, Champions Course Renovations, Omni La
Costa Resort & Spa, 2100 Costa Del Mar Road, Carlsbad, California, Project T2754-
22-04, dated April 15, 2021, prepared by Geocon West, Inc.
Dear Mr. Gulick:
This response letter has been prepared to provide geotechnical responses to report review questions
presented in the City of Carlsbad Geotechnical Report Review letter dated September 28, 2022
(Reference1) with respect to the Limited Geotechnical Investigation report prepared by Geocon West,
Inc. (Geocon) dated April 15, 2022 (Reference 3). This provides an item-by-item response to the
review comments. Reference 1 is attached herein for ease of reference.
Comment 1: Please review the most current grading plan for the project and provide any additional
geotechnical recommendations or modifications to the geotechnical report, as necessary.
Response 1: Geocon has reviewed the grading plans (Reference 2) which depict the proposed
improvements to include: realignment of cart paths, filling of the pond in the northern portion of the
Course; cuts and fills of 5 feet or less to level some areas of the site and to raise other areas; and
construction of three cart path and foot bridges that will span 25 feet or less. Geocon has considered the
final proposed improvements depicted on reference 2 with respect to the Limited Geotechnical
Investigation report (Reference 3) and the expected improvements are generally similar to those
proposed at the time of Reference 3 in 2021 with the exception that no retaining walls are proposed on
the plans. Reference 3 remains applicable to the project unless superseded herein.
GEOCON
W E S T, I N C.
GEOTECHNICA L ■ ENVIRONMENTAL ■ MATERIALS °'
41571 Corning Ploce, Suite l 01 ■ Murrieto, Colilornio 92562-7065 ■ Telephone 951.304.2300 ■ Fox 951 .304.2392
Geocon Project No. T2754-22-04 - 2 - October 10, 2022
Comment 2: Please provide a statement addressing the potential impact of the project on adjacent
properties from a geotechnical standpoint.
Response 2: The proposed improvements will be constructed within the existing golf course and do
not pose a hazard to adjacent properties from a geotechnical standpoint.
Comment 3: Please provide an updated “Boring Location Map” utilizing a reduced version of the
grading plan for the project as a base map but at a sufficiently large scale to clearly show (at a
minimum): a) the existing limits of the golf course, individual fairways, drainages, and water hazards,
etc., and b) the locations of subsurface exploration. Please note that the “Boring Location map”
presented in the submitted report consists of a Google aerial photograph of the site that is on an
8.5x11” sheet and is at a significantly small scale (approximately 1”=1230’) that results in difficulty
showing the actual locations of the subsurface exploration with respect to the course. Please produce a
map at a scale that is sufficiently large to clearly distinguish the fairways and other features of the golf
course and show the specific locations of the borings on the golf course; a sheet larger than 8.5x11”
will likely be necessary to increase the legibility and show all information.
Response 3: We have utilized the referenced grading plans (Reference 2) Sheets 4 through 22 as a
base map for our Geologic Map presented herein as Figures 1 through 19. This provides the
information at a scale of approximately 1”=93’ when printed on 11 X 17 sheets. The grading plans
depict the existing conditions and the proposed improvements.
Comment 4: Please clarify the range in depth of the existing unsuitable fill and young alluvium for the
areas of the proposed cart paths, bridges, and retaining wall.
Response 4: The depth of fill over alluvium is presented on the Geologic Map next to each boring
location for ease of reference. Generally, based on the boring data, a majority of the golf course has
less than 3 feet of previously placed fill over alluvium. Deeper fill is expected within tee areas, bunker
berms, and hills within the fairways. The improvements proposed for this project include the
realignment of cart paths; the flattening of topography in some localized areas within the Champions
Course to remove small hills and straighten the front of slopes along the perimeter of the course; and
the construction of three 25 ft long cart path or foot bridges. The bridges are expected to be supported
on spread footing foundations. No retaining walls are proposed or depicted on the plans.
Geocon recommends that the fill and upper, unsuitable alluvium be removed to expose competent
alluvium resulting in at least 2 feet of engineered fill beneath the new improvements. Please see section
7.5 in the referenced Limited Geotechnical Investigation report.
Geocon Project No. T2754-22-04 - 3 - October 10, 2022
Comment 5: As the site is described as underlain by young alluvium and there is no consolidation
testing reported, please provide the basis for the values of potential settlement (total and differential)
for new structures and improvements that are provided in the report.
Response 5: Planned improvements are lightly loaded structures (on the order of 1,500 psf maximum
bearing pressure) with a minimum of 2 feet of compacted fill beneath small footings. Typical
settlement evaluation was performed utilizing static settlement methods (Schmertmann). Since loading
is light and footings are relatively small, the loads will mostly be supported within compacted fill. Only
minor loads will be imposed on saturated clays at depth. Therefore, long term consolidation settlement
evaluation was not considered necessary.
Comment 6: The report indicates liquefaction may be a design consideration for the proposed bridges
and the retaining wall associated with the project. Please further address and clarify the potential for
liquefaction relative to the proposed project and provide recommendations to mitigate, as necessary.
Response 6: There are no retaining walls planned for this project. Slopes at bridges are 2 to 5 feet
high, bridges are single span, lightly loaded and not particularly settlement sensitive. Therefore,
incorporation of liquefaction settlements or lateral movements are considered necessary. Following a
large earthquake event, releveling may be required.
Comment 7: Please clarify the foundation recommendations for the supports for the proposed bridges.
Response 7: The three proposed bridges will be approximately 25-foot-long single spans and will be
either prefabricated or cast in place founded on shallow spread footing foundations. Section 7.7
provides foundation recommendations. In addition, the following is recommended:
Where bridge footings are located next to a descending 3:1 (horizontal:vertical) fill slope or steeper, the
foundations should be extended to a depth where the bottom outside edge of the footing is at least 7
feet horizontally from the face of slope.
Comment 8: Please provide horizontal setback distance from adjacent slopes for foundations
associated with the proposed bridges and the retaining wall.
Response 8: No retaining walls are proposed. The three bridges are proposed in areas where the
topography is relatively flat with no significant slopes in proximity to the bridge locations. The streams
which the bridges span are 2 to 5 feet deep with fairly steep slopes ranging from vertical to
approximately 1;1 (h:v). The additional recommendation provided in Response No. 7 addresses slope
setbacks.: :
Geocon Project No. T2754-22-04 - 4 - October 10, 2022
Comment 9: Please address if creep load should be applied to the foundations for the proposed
bridges located adjacent to sloping ground: provide lateral creep load, as necessary.
Response 9 : Slopes are 2 to 5 feet, bridges are single span, lightly loaded and not particularly
settlement sensitive. Therefore, evaluation and incorporation of creep loads are considered necessary.
Comment 10: Please provide any recommendations to address the relative shallow groundwater with
respect to the foundations for the proposed bridges or retaining wall, as necessary.
Response 10: There are no retaining walls proposed for this project. Groundwater is shallow at the site
and bridge foundation excavations could encounter groundwater. If encountered, groundwater should
be pumped from the excavation and the excavation bottom stabilized if not firm and unyielding as with
typical grading operations.
Comment 11: Please clarify if reinforcing is recommended for all hardscape improvements due to the
expansive soils and underlying young alluvium.
Response 11: Per Section 7.8.1 of the referenced Limited Geotechnical Investigation report, Geocon
recommends that concrete flatwork be reinforced with No. 3 bars placed 24 inches on center.
Comment 12: As the results of Expansion Index testing presented in the report indicate a medium
expansion potential (EI=74 to 78), please provide recommendations as necessary and a statement that
the proposed foundation system/slabs-on-grade will meet the requirements of section 1808.6 of the
2019 California Building Code. As soils with expansion index (EI) over 20 are considered expansive
and require mitigation in accordance with sections 1803.5.3 and 1808.6 of the 2019 CBC, please
indicate the method of section 1808.6 (1808.6.1 through 1808.6.4) that is being recommended to satisfy
the requirement and provide the Effective Plasticity Index and any other parameters for foundation
design in accordance with WRI/CRSI Design of Slab-on-Ground floors, as necessary.
Response 12: Since the expansive soils will not be removed, stabilization will be required.
Stabilization will consist of removing existing expansive soils beneath footings, wetting (presaturating)
and placing as compacted fill. No slabs-on-grade are proposed for this project.
Comment 13: Soluble sulfate testing presented in the report indicates both moderate and severs [sic]
sulfate exposure (S1 and S2). Consequently, please provide recommendations for sulfate resistant
concrete (compressive strength, w/c ratio, type cement) consistent with the 2019 California Building
Code and ACI 318, Tables 4.2.1 and 4.3.1 assuming “Severe” (S2) exposure class.
Response 13: The Exposure Class with corresponding Cement Type, Water to Cement Ratio, and
Minimum Compressive Strength are presented in Table 7.2.5 of the referenced Limited Geotechnical
Investigation report.
Geocon Project No. T2754-22-04 - 5 - October 10, 2022
Comment 14: Please provide the OSHA Type Soil (A, B, or C) and associated temporary slope
inclination (H:V) that the construction plans and contractors should adhere to during the design and
construction of the development.
Response 14: Geocon presents recommendations for temporary excavations in Section 7.4 of
Reference 3. The site soils should be considered as Class C with the addition of saturation. Conditions
can vary within excavations and Geocon may not be present during all site work, therefore the
contractor’s competent person should provide specific recommendations for excavation in accordance
with OSHA requirements.
Comment 15: Please provide a complete summary list of the geotechnical observation and testing
services that should be performed as part of the construction of this proposed development.
Response 15: Geocon should provide geotechnical testing and observation services during the grading
operations, foundation construction, utility installation, retaining wall backfill and pavement
installation. Table 1 presents the typical geotechnical observations we would expect for the proposed
improvements.
TABLE 1
EXPECTED GEOTECHNICAL TESTING AND OBSERVATION SERVICES
Construction Phase Observations Expected Time Frame
Ground Modification Ground Modification Installation Full Time
Confirmation Testing Part Time to Full Time
Grading
Base of Removal Part Time During
Removals
Geologic Logging Part Time to Full Time
Fill Placement and Soil Compaction Full Time
Soldier Piles Solder Pile Drilling Depth Part Time
Tieback Anchors Tieback Drilling and Installation Full Time
Tieback Testing Full Time
Soil Nail Walls Soil Nail Drilling and Installation Full Time
Soil Nail Testing Full Time
Foundations Foundation Excavation Observations Full Time
Drilling Operations for Piles Part Time
Utility Backfill Fill Placement and Soil Compaction Part Time to Full Time
Retaining Wall Backfill Fill Placement and Soil Compaction Part Time to Full Time
Subgrade for Sidewalks, Curb/Gutter
and Pavement Soil Compaction Part Time
Pavement Construction
Base Placement and Compaction Part Time
Asphalt Concrete Placement and
Compaction Full Time
Geocon Project No. T2754-22-04 - 6 - October 10, 2022
LIMITATIONS
The recommendations of this report pertain only to the subject site and are based upon the assumption
that the soil conditions do not deviate from those disclosed in this and Geocon’s 2021 report. If any
variations or undesirable conditions are encountered during construction, or if the proposed
construction will differ from that expected herein, Geocon West, Inc. should be notified so that
supplemental recommendations can be given. The evaluation or identification of the potential presence
of hazardous materials was not part of the scope of services provided by Geocon West, Inc.
This report is issued with the understanding that it is the responsibility of the owner, or of their
representative, to ensure that the information and recommendations contained herein are brought to the
attention of the architect and engineer for the project and incorporated into the plans, and the necessary
steps are taken to see that the contractor and subcontractors carry out such recommendations in the
field.
The findings of this report are valid as of the date of this report. However, changes in the conditions of
a property can occur with the passage of time, whether they are due to natural processes or the works of
man on this or adjacent properties. In addition, changes in applicable or appropriate standards may
occur, whether they result from legislation or the broadening of knowledge. Accordingly, the findings
of this report may be invalidated wholly or partially by changes outside our control. Therefore, this
report is subject to review and should not be relied upon after a period of three years.
The firm that performed the geotechnical investigation for the project should be retained to provide
testing and observation services during construction to provide continuity of geotechnical interpretation
and to check that the recommendations presented for geotechnical aspects of site development are
incorporated during site grading, construction of improvements, and excavation of foundations.
If another geotechnical firm is selected to perform the testing and observation services during
construction operations, that firm should prepare a letter indicating their intent to assume the
responsibilities of project Geotechnical Engineer of Record. A copy of the letter should be provided to
the regulatory agency for their records. In addition, that firm should provide revised recommendations
concerning the geotechnical aspects of the proposed development, or a written acknowledgement of
their concurrence with the recommendations presented in our report. They should also perform
additional analyses deemed necessary to assume the role of Geotechnical Engineer of Record.
Geocon Project No. T2754-22-04 - 7 - October 10, 2022
If you have any questions regarding this report, or if we may be of further service, please contact the
undersigned at your convenience.
Very truly yours,
GEOCON WEST, INC.
Lisa A. Battiato
CEG 2316
Joseph J. Vettel
GE 2401
Attachments: Geotechnical Report Review dated September 28, 2022
Figures 1 through 19, Geologic Map
Distribution: (pdf) Addressee
(pdf) Mr. Keith Hansen, O’Day Consultants
GEOTECHNICAL REPORT REVIEW
__________________________________________________________
DATE: September 28, 2022
TO: City of Carlsbad
Land Development Engineering
1635 Faraday Avenue
Carlsbad, CA 92008
Attention: Emad Elias
PROJECT ID: SUP2022-0001
GRADING PERMIT NO.: GR2022-0038
SUBJECT: Omni La Costa Golf Course (1st review)
Items Submitted by Applicant Items Being Returned to Applicant
“Limited Geotechnical Investigation, Champions
Course Renovations, Omni La Costa Resort &
Spa, 2100 Costa del Mar Road, Carlsbad,
California,” by Geocon West, Inc., dated April 15,
2021.
Written report review comments.
Based on our review of the submitted geotechnical report, we are providing the following
comments that should be addressed prior to the next submittal. Please provide complete and
thorough written responses to all comments.
GEOTECHNICAL COMMENTS:
1. Please review the most current grading plan for the project and provide any additional
geotechnical recommendations or modifications to the geotechnical report as necessary.
2. Please provide a statement addressing the potential impact of the project on adjacent
properties from a geotechnical standpoint.
3. Please provide an updated “Boring Location Map” map utilizing a reduced version of the
grading plan for the project as the base map but at a sufficiently large scale to clearly show
(at a minimum): a) the existing limits of the golf course, individual fairways, drainages and
water hazards, etc., and b) the locations of subsurface exploration. Please note that the
“Boring Location Map” presented in the submitted report consists of a Google aerial
photograph of the site that is on an 8.5x11” sheet and is at a significantly small scale
(approximately 1” = 1230’) that results in difficulty showing the actual locations of the
GR2022-0038
September 28, 2022
Page 2 of 2
subsurface exploration with respect to the course. Please produce the map at a scale that
is sufficiently large to clearly distinguish the fairways and other features of the golf course
and show the specific locations of the borings on the golf course; a sheet larger than
8.5x11” will likely be necessary to increase legibility and show all information.
4. Please clarify the range in depth of the existing unsuitable fill and young alluvium for the
areas of the proposed cart paths, bridges, and retaining wall.
5. As the site is described as underlain by young alluvium and there is no consolidation
testing reported, please provide the basis for the values of potential settlement (total and
differential) for new structures and improvements that are provided in the report.
6. The report indicates liquefaction may be a design consideration for the proposed bridges
and retaining wall associated with the project. Please further address and clarify the
potential for liquefaction relative to the proposed project and provide recommendations to
mitigate as necessary.
7. Please clarify the foundation recommendations for the supports for the proposed bridges.
8. Please provide the horizontal setback distance from adjacent slopes for foundations
associated with the proposed bridges and the retaining wall.
9. Please address if a creep load should be applied to the foundations for the proposed
bridges located adjacent to sloping ground; provide the lateral creep load as necessary.
10. Please provide any recommendations to address the relative shallow groundwater with
respect to the foundations for the proposed bridges or retaining wall as necessary.
11. Please clarify if reinforcing is recommended for all hardscape improvements due to the
expansive soils and underlying young alluvium.
12. As the results of Expansion Index testing presented in the report indicate a medium
expansion potential (EI=74 to 78), please provide recommendations as necessary and a
statement that the proposed foundation system/slabs on-grade will meet the requirements
of Section 1808.6 of the 2019 California Building Code. As soils with expansion index (EI)
over 20 are considered expansive and require mitigation in accordance with Sections
1803.5.3 and 1808.6 of the 2019 CBC, please indicate the method of Section 1808.6
(1808.6.1 through 1808.6.4) that is being recommended to satisfy the requirement, and
provide the Effective Plasticity Index and any other parameters for foundation design in
accordance with WRI/CRSI Design of Slab-on-Ground floors as necessary.
13. Soluble sulfate testing presented in the report indicates both moderate and severs sulfate
exposure (S1 and S2). Consequently, please provide recommendations for sulfate
resistant concrete (compressive strength, w/c ratio, type cement) consistent with the 2019
California Building Code and ACI 318, Tables 4.2.1 and 4.3.1 assuming a “Severe” (S2)
exposure class.
14. Please provide the OSHA Type Soil (A, B, or C) and associated temporary slope
inclination (H:V) that the construction plans and contractors should adhere to during the
design and construction of the development.
15. Please provide a complete summery list of the geotechnical observation/testing services
that should be performed as part of the construction of this proposed development.
PROJECT NO. T754-22-04 FIG. 1
CHAMPIONS COURSE RENOVATIONSOMNI LA COSTA RESORT & SPA
2100 COSTA DEL MAR ROAD
CARLSBAD, CALIFORNIA
GEOLOGIC MAP
HD OCTOBER 2022
Source: O’Day Consultants, Rough Grading Plan for Omni Resort Golf Course, prepared September 1, 2022.
……GROUNDWATER
ENCOUNTERED
3.5’
GEOCON LEGEND
Locations are approximate
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LOCATION (2021)
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CHAMPIONS COURSE RENOVATIONSOMNI LA COSTA RESORT & SPA
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CARLSBAD, CALIFORNIA
GEOLOGIC MAP
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PROJECT NO. T754-22-04 FIG. 3
CHAMPIONS COURSE RENOVATIONSOMNI LA COSTA RESORT & SPA
2100 COSTA DEL MAR ROAD
CARLSBAD, CALIFORNIA
GEOLOGIC MAP
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Source: O’Day Consultants, Rough Grading Plan for Omni Resort Golf Course, prepared September 1, 2022.
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PROJECT NO. T754-22-04 FIG. 4
CHAMPIONS COURSE RENOVATIONSOMNI LA COSTA RESORT & SPA
2100 COSTA DEL MAR ROAD
CARLSBAD, CALIFORNIA
GEOLOGIC MAP
HD OCTOBER 2022
Source: O’Day Consultants, Rough Grading Plan for Omni Resort Golf Course, prepared September 1, 2022.
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PROJECT NO. T754-22-04 FIG. 5
CHAMPIONS COURSE RENOVATIONSOMNI LA COSTA RESORT & SPA
2100 COSTA DEL MAR ROAD
CARLSBAD, CALIFORNIA
GEOLOGIC MAP
HD OCTOBER 2022
Source: O’Day Consultants, Rough Grading Plan for Omni Resort Golf Course, prepared September 1, 2022.
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ENCOUNTERED
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Locations are approximate
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PROJECT NO. T754-22-04 FIG. 6
CHAMPIONS COURSE RENOVATIONSOMNI LA COSTA RESORT & SPA
2100 COSTA DEL MAR ROAD
CARLSBAD, CALIFORNIA
GEOLOGIC MAP
HD OCTOBER 2022
Source: O’Day Consultants, Rough Grading Plan for Omni Resort Golf Course, prepared September 1, 2022.
……GROUNDWATER
ENCOUNTERED
3.5’
GEOCON LEGEND
Locations are approximate
B-6 ……. GEOCON BORING
LOCATION (2021)
Qya .…. YOUNG ALLUVIAL
DEPOSITS
afu …...UNDOCUMENTED
FILL
B-8 ……. GEOCON BORING
LOCATION (2002)
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PROJECT NO. T754-22-04 FIG. 7
CHAMPIONS COURSE RENOVATIONSOMNI LA COSTA RESORT & SPA
2100 COSTA DEL MAR ROAD
CARLSBAD, CALIFORNIA
GEOLOGIC MAP
HD OCTOBER 2022
Source: O’Day Consultants, Rough Grading Plan for Omni Resort Golf Course, prepared September 1, 2022.
……GROUNDWATER
ENCOUNTERED
3.5’
GEOCON LEGEND
Locations are approximate
B-6 ……. GEOCON BORING
LOCATION (2021)
Qya .…. YOUNG ALLUVIAL
DEPOSITS
afu …...UNDOCUMENTED
FILL
B-8 ……. GEOCON BORING
LOCATION (2002)
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GEOTECHNICAL, ENVIRONMENTAL, MATERIALS
41571 CORNING PLACE #101, MURRIETA, CALIFORNIA 92562
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PROJECT NO. T754-22-04 FIG. 8
CHAMPIONS COURSE RENOVATIONSOMNI LA COSTA RESORT & SPA
2100 COSTA DEL MAR ROAD
CARLSBAD, CALIFORNIA
GEOLOGIC MAP
HD OCTOBER 2022
Source: O’Day Consultants, Rough Grading Plan for Omni Resort Golf Course, prepared September 1, 2022.
B-6 1 -5’ Qya
(SM)
0 –1’ afu
Qya
……GROUNDWATER
ENCOUNTERED
3.5’
GEOCON LEGEND
Locations are approximate
B-6 ……. GEOCON BORING
LOCATION (2021)
Qya .…. YOUNG ALLUVIAL
DEPOSITS
afu …...UNDOCUMENTED
FILL
B-8 ……. GEOCON BORING
LOCATION (2002)
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W E S T , I N C .
GEOTECHNICAL, ENVIRONMENTAL, MATERIALS
41571 CORNING PLACE #101, MURRIETA, CALIFORNIA 92562
o· 10· 40'
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PROJECT NO. T754-22-04 FIG. 9
CHAMPIONS COURSE RENOVATIONSOMNI LA COSTA RESORT & SPA
2100 COSTA DEL MAR ROAD
CARLSBAD, CALIFORNIA
GEOLOGIC MAP
HD OCTOBER 2022
Source: O’Day Consultants, Rough Grading Plan for Omni Resort Golf Course, prepared September 1, 2022.
……GROUNDWATER
ENCOUNTERED
3.5’
GEOCON LEGEND
Locations are approximate
B-6 ……. GEOCON BORING
LOCATION (2021)
Qya .…. YOUNG ALLUVIAL
DEPOSITS
afu …...UNDOCUMENTED
FILL
B-8 ……. GEOCON BORING
LOCATION (2002)
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41571 CORNING PLACE #101, MURRIETA, CALIFORNIA 92562
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PROJECT NO. T754-22-04 FIG. 10
CHAMPIONS COURSE RENOVATIONSOMNI LA COSTA RESORT & SPA
2100 COSTA DEL MAR ROAD
CARLSBAD, CALIFORNIA
GEOLOGIC MAP
HD OCTOBER 2022
Source: O’Day Consultants, Rough Grading Plan for Omni Resort Golf Course, prepared September 1, 2022.
……GROUNDWATER
ENCOUNTERED
3.5’
GEOCON LEGEND
Locations are approximate
B-6 ……. GEOCON BORING
LOCATION (2021)
Qya .…. YOUNG ALLUVIAL
DEPOSITS
afu …...UNDOCUMENTED
FILL
B-8 ……. GEOCON BORING
LOCATION (2002)
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GEOCON
W E S T , I N C .
GEOTECHNICAL, ENVIRONMENTAL, MATERIALS
41571 CORNING PLACE #101, MURRIETA, CALIFORNIA 92562
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SCALE: 1. = 40'
PROJECT NO. T754-22-04 FIG. 11
CHAMPIONS COURSE RENOVATIONSOMNI LA COSTA RESORT & SPA
2100 COSTA DEL MAR ROAD
CARLSBAD, CALIFORNIA
GEOLOGIC MAP
HD OCTOBER 2022
……GROUNDWATER
ENCOUNTERED
3.5’
Source: O’Day Consultants, Rough Grading Plan for Omni Resort Golf Course, prepared September 1, 2022.
GEOCON LEGEND
Locations are approximate
B-6 ……. GEOCON BORING
LOCATION (2021)
Qya .…. YOUNG ALLUVIAL
DEPOSITS
afu …...UNDOCUMENTED
FILL
B-8
B-7 1½ -5’ Qya
(CL)
0 -1½’ afu
Qya ……. GEOCON BORING
LOCATION (2002)
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GEOTECHNICAL, ENVIRONMENTAL, MATERIALS
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O' 10' 40'
D
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D
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SCALE, I" = 40'
PROJECT NO. T754-22-04 FIG. 12
CHAMPIONS COURSE RENOVATIONSOMNI LA COSTA RESORT & SPA
2100 COSTA DEL MAR ROAD
CARLSBAD, CALIFORNIA
GEOLOGIC MAP
HD OCTOBER 2022
Source: O’Day Consultants, Rough Grading Plan for Omni Resort Golf Course, prepared September 1, 2022.
……GROUNDWATER
ENCOUNTERED
3.5’
GEOCON LEGEND
Locations are approximate
B-6 ……. GEOCON BORING
LOCATION (2021)
Qya .…. YOUNG ALLUVIAL
DEPOSITS
afu …...UNDOCUMENTED
FILL
B-8
B-7 2 ½ -16 ½ ’
Qya (SC & CL)
0 –2 ½’ afu
Qya
……. GEOCON BORING
LOCATION (2002)
8’
B-6
2 -16 ½ ’ Qya
(CL)
0 –2 afu
Qya3.5’
APN I 216-600-05
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GEOCON
W E S T , I N C .
GEOTECHNICAL ENVIRONME
41571 CORNING PLACE #101, MURRIET'::'.~~!:L.1~'i~l~R~~~;
i o· JO' 40'
5 20 SCALE: I• = 40'
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PROJECT NO. T754-22-04 FIG. 13
CHAMPIONS COURSE RENOVATIONSOMNI LA COSTA RESORT & SPA
2100 COSTA DEL MAR ROAD
CARLSBAD, CALIFORNIA
GEOLOGIC MAP
HD OCTOBER 2022
Source: O’Day Consultants, Rough Grading Plan for Omni Resort Golf Course, prepared September 1, 2022.
……GROUNDWATER
ENCOUNTERED
3.5’
GEOCON LEGEND
Locations are approximate
B-6 ……. GEOCON BORING
LOCATION (2021)
Qya .…. YOUNG ALLUVIAL
DEPOSITS
afu …...UNDOCUMENTED
FILL
B-8 ……. GEOCON BORING
LOCATION (2002)\
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0' 10' 40'
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PROJECT NO. T754-22-04 FIG. 14
CHAMPIONS COURSE RENOVATIONSOMNI LA COSTA RESORT & SPA
2100 COSTA DEL MAR ROAD
CARLSBAD, CALIFORNIA
GEOLOGIC MAP
HD OCTOBER 2022
Source: O’Day Consultants, Rough Grading Plan for Omni Resort Golf Course, prepared September 1, 2022.
……GROUNDWATER
ENCOUNTERED
3.5’
GEOCON LEGEND
Locations are approximate
B-6 ……. GEOCON BORING
LOCATION (2021)
Qya .…. YOUNG ALLUVIAL
DEPOSITS
afu …...UNDOCUMENTED
FILL
B-8
B-4 0 –16 ½ ’
Qya (CL)
Qya
……. GEOCON BORING
LOCATION (2002)
3.5’
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W E S T , I N C .
GEOTECHNICAL, ENVIRONMENTAL, MATERIALS
41571 CORNING PLACE #101, MURRIETA, CALIFORNIA 92562
i
O' 10' 40'
D
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SCALE, 1" = 40'
PROJECT NO. T754-22-04 FIG. 15
CHAMPIONS COURSE RENOVATIONSOMNI LA COSTA RESORT & SPA
2100 COSTA DEL MAR ROAD
CARLSBAD, CALIFORNIA
GEOLOGIC MAP
HD OCTOBER 2022
Source: O’Day Consultants, Rough Grading Plan for Omni Resort Golf Course, prepared September 1, 2022.
……GROUNDWATER
ENCOUNTERED
3.5’
GEOCON LEGEND
Locations are approximate
B-6 ……. GEOCON BORING
LOCATION (2021)
Qya .…. YOUNG ALLUVIAL
DEPOSITS
afu …...UNDOCUMENTED
FILL
B-8
B-7 0 –16 ½ ’ Qya
(SM & CL)
Qya
……. GEOCON BORING
LOCATION (2002)
4’
1-19 ½ ’
Qya (CL)
0 -1 afu
Qya
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41571 CORNING PLACE #101, MURRIETA, CALIFORNIA 92562
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PROJECT NO. T754-22-04 FIG. 16
CHAMPIONS COURSE RENOVATIONSOMNI LA COSTA RESORT & SPA
2100 COSTA DEL MAR ROAD
CARLSBAD, CALIFORNIA
GEOLOGIC MAP
HD OCTOBER 2022
Source: O’Day Consultants, Rough Grading Plan for Omni Resort Golf Course, prepared September 1, 2022.
……GROUNDWATER
ENCOUNTERED
3.5’
GEOCON LEGEND
Locations are approximate
B-6 ……. GEOCON BORING
LOCATION (2021)
Qya .…. YOUNG ALLUVIAL
DEPOSITS
afu …...UNDOCUMENTED
FILL
B-8 ……. GEOCON BORING
LOCATION (2002)
l
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W E S T , I N C .
GEOTECHNICAL, ENVIRONMENTAL, MATERIALS
41571 CORNING PLACE #101, MURRIETA, CALIFORNIA 92562
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PROJECT NO. T754-22-04 FIG. 17
CHAMPIONS COURSE RENOVATIONSOMNI LA COSTA RESORT & SPA
2100 COSTA DEL MAR ROAD
CARLSBAD, CALIFORNIA
GEOLOGIC MAP
HD OCTOBER 2022
Source: O’Day Consultants, Rough Grading Plan for Omni Resort Golf Course, prepared September 1, 2022.
……GROUNDWATER
ENCOUNTERED
3.5’
GEOCON LEGEND
Locations are approximate
B-6 ……. GEOCON BORING
LOCATION (2021)
Qya .…. YOUNG ALLUVIAL
DEPOSITS
afu …...UNDOCUMENTED
FILL
B-8 ……. GEOCON BORING
LOCATION (2002)
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PROJECT NO. T754-22-04 FIG. 18
CHAMPIONS COURSE RENOVATIONSOMNI LA COSTA RESORT & SPA
2100 COSTA DEL MAR ROAD
CARLSBAD, CALIFORNIA
GEOLOGIC MAP
HD OCTOBER 2022
Source: O’Day Consultants, Rough Grading Plan for Omni Resort Golf Course, prepared September 1, 2022.
……GROUNDWATER
ENCOUNTERED
3.5’
GEOCON LEGEND
Locations are approximate
B-6 ……. GEOCON BORING
LOCATION (2021)
Qya .…. YOUNG ALLUVIAL
DEPOSITS
afu …...UNDOCUMENTED
FILL
B-8
B-2
1 ½ –16 ½ ’
Qya (SM & CL)
Qya
……. GEOCON BORING
LOCATION (2002)
4’
1-19 ½ ’
Qya
0 -1 afu
Qya
B-2
8’
0 –1 ½’ afu
APN 216-590-01
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GEOTECHNICAL, ENVIRONMENTAL, MATERIALS
41571 CORNING PLACE #101, MURRIETA, CALIFORNIA 92562
o· 10· 40•
s 20 so·
SCALE, 1" = 40'
PROJECT NO. T754-22-04 FIG. 19
CHAMPIONS COURSE RENOVATIONSOMNI LA COSTA RESORT & SPA
2100 COSTA DEL MAR ROAD
CARLSBAD, CALIFORNIA
GEOLOGIC MAP
HD OCTOBER 2022
Source: O’Day Consultants, Rough Grading Plan for Omni Resort Golf Course, prepared September 1, 2022.
……GROUNDWATER
ENCOUNTERED
3.5’
GEOCON LEGEND
Locations are approximate
B-6 ……. GEOCON BORING
LOCATION (2021)
Qya .…. YOUNG ALLUVIAL
DEPOSITS
afu …...UNDOCUMENTED
FILL
B-8 ……. GEOCON BORING
LOCATION (2002)
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Dense Vegetation
Ground Obscured
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GEOCON
W E S T , I N C .
GEOTECHNICAL, ENVIRONMENTAL, MATERIALS
41571 CORNING PLACE #101, MURRIETA, CALIFORNIA 92562
-1
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5 20
SCALE, 1• • 40'
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EB
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