HomeMy WebLinkAboutPD 2021-0004; NORTH COUNTY ACADEMY; THIRD PARTY GEOTECHNICAL REVIEW (FIRST); 2021-02-09THIIhkTII EMOONEEROW89 IICI
SOIL & FOUNDATION ENGINEERING • ENGINEERING GEOLOGY o HYDROGEOLOGY
February 9, 2021
Project No. 9296.1
Log No. 21312
City of Carlsbad
Laud Development Engineering
1635 Faraday Avenue
Carlsbad, California 92008-7314
Attention: Ms. Jennifer Horodyski
Subject: THIRD-PARTY GEOTECHNICAL REVIEW (FIRST)
Proposed Portable Classrooms
1640 Magnolia Avenue
Carlsbad, California
Project ID: PD2021-0004/GR2021-0004
rpce adc1'ss
-30
References: I. "Report, Geotechnical investigation, Proposed Portable Classrooms,
North County Academy, 1640 Magnolia Avenue, Carlsbad,
California", by NOVA Services, Inc., dated December 7, 2020.
2. "Grading Plans For: North County Academy, Campus Consolidation",
by Paso Laret Suiter & Associates, dated January 7, 2021 (Sheets I
through 5).
Dear Ms. Horodyski:
In accordance with your request, Hetherington Engineering, Inc. has provided third-party
geotechnical review of Reference 1. The foLlowing comments are provided for analyses
and/or response by the Geotechnical Consultant.
GEOTECHNICAL REVIEW COMMENTS:
The Consultant should review the project grading and foundation plans, provide any
additional geotechnical recommendations considered necessary, and confirm that the
plans have been prepared in accordance with the geotechnical recommendations.
The Consultant should provide an updated geotechnical map/plot plan utilizing the
latest grading plan for the project to clearly show (at a minimum), a) existing site
topography, b) proposed structures/improvements, c proposed finished grades, d)
locations of the subsurface exploration, e) geologic contacts, and f remedial grading
limits, etc.
The Consultant should address moisture vapor retarder/barrier underlayment
recommendations for the conventional slab-on-grade.
5365 Avenida Encinas, Suite A • Carlsbad, CA 92008-4369 • (760) 931-1917 • Fax (760) 931.0545
333 Third Street, Suite 2 • Laguna Beach, CA 92651-2306 • (949) 715-5440 • Fax (760) 931-0545
www.hetheringtonengineerin9.com
THIRD-PARTY GEOTECHNECAL REVIEW (FIRST)
Project No. 9296.1
Log No. 21312
February 9, 2021
Page 2
The opportunity to be of service is sincerely appreciated. If you have any questions
regarding this review, please contact this office at your convenience.
Sincerely,
HEFJ-l[RINGTON ENGINEERLNG, INC
IF
Civil Engineer 30
Geotechnical Engii
W 397
J
*1
Paul A. Bogseth
Professional Geologist 3772
Certified Engineering Geologist
ULA. EH 115 No I53 J& (expires 3/31/22) Certified Hydrogeologist 591 \P
(expires 3/31/22)
Distribution: ]-via c-mail (Jennifer.HorodyskicarIsbadca.gov)
I-via e-mail (Amy.Wickerhamcarlsbadca.gov)
HETHERINGTON ENGINEERING, INC.