HomeMy WebLinkAboutSDP 2022-0003; FPC RESIDENTIAL; GEOTECHNICAL REVIEW RETAINING WALLS; 2023-12-12 ADVANCED GEOTECHNICAL SOLUTIONS, INC.
485 Corporate Drive, Suite B
Escondido, California 92029
Telephone: (619) 867-0487 Fax: (714) 409-3287
ORANGE AND L.A. COUNTIES INLAND EMPIRE SAN DIEGO AND IMPERIAL COUNTIES
(714) 786-5661 (619) 867-0487 (619) 867-0487
H.G. Fenton Company December 12, 2023
7577 Mission Valley Road P/W 2107-12
San Diego, California 92108 Report No. 2107-12-B-10
GR 2023-0029
Attention: Mr. Ryley Webb
Subject: Retaining Wall Plan Review, Proposed Multi-Family Residential Development, 7200-
7294 Ponto Drive, Carlsbad, California
References: See Appendix
Pursuant to your request, Advanced Geotechnical Solutions, Inc. (AGS) has reviewed the geotechnical
aspects of the retaining wall plans, details, and calculations for the proposed residential development to be
located at 7200-7294 Ponto Drive in the City of Carlsbad, California.
AGS has reviewed the referenced retaining wall plans and calculations prepared by Mor Engineers for
conformance with the geotechnical recommendations presented in the geotechnical reports prepared by
AGS (2022a, 2022d, and 2023). Based on our review, it is AGS’s opinion that the referenced retaining wall
plans and details are in conformance with the recommendations presented in the referenced geotechnical
reports. AGS has no objection to the structural engineer using the combined passive pressure and sliding
resistance for the design of these walls. This is made in consideration that these walls can rotate sufficiently
to mobilize the full passive resistance without causing distress to the landscaping and parking lot
improvements that are located above the walls.
Unless superseded herein, the recommendations presented in AGS’s reference reports (2022a, 2022d, and
2023) are still considered valid. Conditions should be evaluated during grading by the geotechnical engineer
of record to confirm if the recommendations provided in the referenced geotechnical report remain valid
for the exposed conditions.
The opportunity to be of service is sincerely appreciated. If you should have any questions, please do not
hesitate to contact the undersigned.
___________________________________
JOHN J. DONOVAN
RCE 65051, RGE 2790, Reg. Exp. 6-30-25
2107-12-B-10 (Dec 12, 2023, Retaining Plan Review, FPC Residential Carlsbad).docx
Distribution: (1) Addressee (pdf)
Appended: References
~GS
December 12, 2023 Page A-1
P/W 2107-12 Report No. 2107-12-B-10
ADVANCED GEOTECHNICAL SOLUTIONS, INC.
APPENDIX
REFERENCES
Advanced Geotechnical Solutions, Inc. (2021). “Due Diligence Geotechnical Study, Proposed Multi-
Family Residential Development, 7200-7590 Ponto Drive, Carlsbad, County of Orange, California,”
dated December 3, 2021, Report No. 2107-12-B-2R.
---. (2022a). “Preliminary Geotechnical Investigation and Infiltration Study, Proposed Multi-Family
Residential Development, 7200-7294 Ponto Drive, Carlsbad, California,” dated March 16, 2022,
Report No. 2107-12-B-4.
---. (2022b). “Preliminary Infiltration Feasibility Study, Proposed Multi-Family Residential Development,
7200-7294 Ponto Drive, Carlsbad, California,” dated March 16, 2022, Report No. 2107-12-B-5.
---. (2022c). “Additional Comments, Feasibility of Onsite Infiltration, Proposed Multi-Family Residential
Development, 7200-7294 Ponto Drive, Carlsbad, California,” dated August 18, 2022, Report No.
2107-12-B-6.
---. (2022d). “Addendum Report and Response to City Geotechnical Comments, Proposed Multi-Family
Residential Development, 7200-7294 Ponto Drive, Carlsbad, California,” dated October 6, 2022,
Report No. 2107-12-B-7R.
---. (2023a). “Addendum Report and Response to City Geotechnical Comments, Proposed Multi-Family
Residential Development, 7200-7294 Ponto Drive, Carlsbad, California,” dated December 1, 2023,
Report No. 2107-12-B-8.
---. (2023b). “Foundation Plan Review, Proposed Multi-Family Residential Development, 7200-7294
Ponto Drive, Carlsbad, California,” dated December 9, 2023, Report No. 2107-12-B-9.
Mor Engineers. (2023a). Structural Plans for: FPC Residential, Project No. 2209, Sheets SN-1, SN-2,
SN-3, SF1-1.0, SF2-1.0, SFB-3.1, SFB-4.1, SR1-1.0, SR2-1.0, SR3-1.0, SRB-4.1, SRB-5.1, SRB-
5.1A, SRB-5.1.1, SRB-6.1, STB-1.0, STB-1.1, SD-1, WSWH-1, WSWH-1.1, and WSWH-2. Delta 1
Revision dated January 27, 2023.
---. (2023b). Grading Plans for: FPC Residential, Project SPD 2022-003, Drawing No. 543-6A, Sheets
Structural Notes and Details 1 though 12, dated December 7, 2023.
---. (2023c). Project: Structural engineering for the Ponto - Landscape project in the City of Carlsbad,
CA; Subject: Landscape Plan Check #1 Structural calculations. dated December 12, 2023.
PLSA Engineering. (2023). Grading Plans for: FPC Residential, Project No. SDP 2022-0003, Sheets 1
through 19 of 21, provided on November 9, 2023.