HomeMy WebLinkAboutMS 14-11; MATHIS LEVANTE SUBDIVISION; THIRD PARTY GEOTECHNICAL REVIEW (SECOND); 2020-09-09HETHER1NGTON ENGINEERING, INC,
SOIL ,& FOUNDATION ENGINEERING • ENGINEERING. GEOLOGY • HYDROGEOLOGY
September 9, 2020
Project No, 8949.1
Log No, 21135
City of Carlsbad
163.5 Faraday Avenue
Carlsbad, California 92008
Attention.: Mr. David Rick
Subject: THIRD-PARTY QEOTECHNICAL REVIEW (SECOND)
Proposed Single-Family Residence
3.144 Levante Street
APN 223-170-65
Carlsbad, Cal iforni
Project ID: GR20i9-0034- DWG 498.IB
References: Attached
Deal. Mr. Ric1:
In accordance with your request, Hetherington Engineering, Inc. has provided-third-party
geotechnical review of References 6 and 7. Based on our review, the GeOtechnical
Consultant has responded to oUr prior comments and we have no additional comments.
Observation and testing by the Geotechnical Consultant during grading and co.istruction
should be required to veri' antkipated conditions or to revise the geotechnical
recommendations as considered necessary. A final geo.technical report of grading and
consfruction should be required.
This opportunity to be of service is sincerely appreciated. If you have any questions
i'egardiig this review, please contact this office at your convenience.
Sincerely,
Civil Engineer 3088 ofessiona Geologist 3772
.MariW. A. Bogseth
Geotechnical Enginee EW 397 rtified Engineering Geologist 115.3
(expires 3/31/22) ertifiedHydrogeologist 591
expires 3/31./22)
Distribution: 1.-via e-mail carisbadca.gov)
1-via email (Cecelia.Fernandez®carlsbadca.gov)
I.-via e-mail (Briget.Bokacarlsbadca.gov)
53.65 Averda Encinas, SUite A • Ca.rlsbad, CA 92008-4369. (760)931-1917 • Fax (760) 931-0545
333 Third Stree • Laguna Beach, CA 9265 • (949) 715-5440.: Fax (949) 715-5442
www.hetheringtonengineering.com
REFERENCES
L "Limited Site Investigation, Four Proposed Single Family Residences, Lot 230 & 231.
Levante Street APN 223-170-18 & 19, City of Carlsbad, California", by East County
Soil Consultation and Eigineering, Inc, dated July 25, 202.
2. "Report of Field Density Tests, Four Proposed Single-Faniiiy Residences, Lots 230 &
231 Levante Street, APN 223-1-70-18 & 19, City of Carlsbad, California", by East
County Soil Consultation and Engineering, Inc., dated September 12, 2002
3 "Addendum to Limited Site InvestigatLon, Four Pioposed Single Family Residences, Lots
230 & 231 Levante Street, APN 223-170-18 & 19 City of Carlsbad, California", by East
County Soil Consultation and Engineering, Inc., dated November 12, 2002
4 "Geotechnical Report Update (Revised), Proposed Single-Family Residence on
Southwestern Parcel, Levante Street, APN 223-170-18 & 19, La Costa Area, City of
ailsbad, California 92009", by East County Soil Consultation and Engineering, Inc.-,
dated. September 19, 2016..
5 "Third-Party Geotechnical Review (First), Proposed Single-Family Residence, 3144
Levante Street APN 223-170-65, Carlsbad California, Project .11): GR2019-0034 DWG
498. IB", by HethetingionEngineering, Inc., dated August 13, 2019.
6 "Response to Third-Party. Geotechnical Review by Hetherington Engineering, 3144
Levante Street, APN 223-170-65, Carlsbad, California 92009, Carlsbad ID GR2019-
0034 - DWG 498.113", by East County Soil Consultation and Engineering) Inc;, dated
AUgust25) 2020.
7 "Review of Grading Plan, Foundation Plan and Foundation Details for Proposed Single-
Family Residence, 3144 Levante Street, APN 223-170-65, Carlsbad, California 92009,
Project ID GR2019-0034 - DWG .10, by East County Soil Consultation and Engineeiing,
Inc., dated August 27, 2020
Projci No. 8949.1
HETHERINGTON ENGINEERING, INC. Log No. 21t3