HomeMy WebLinkAboutCT 07-03; ROBERTSON RANCH PA 14; GEOTECHNICAL UPDATE; 2010-04-22Geotechnical • Geologic . Coastal . Environmental
5741 Palmer Way • Carlsbad, California 92010 • (760) 438-3155 • FAX (760) 931-0915 www.geosoilsinc.com
April 22, 2010
W.O. 5949-B-SC
Brookfield Homes
12865 Pointe Del Mar, Suite 200
Del Mar, California 92014
Attention: Ms. Teri McHugh
Subject: Geotechnical Update for Lots 1 Through 7 of Planning Area 14, Robertson
Ranch, East Village, Carlsbad Tract 07-03, Drawing 453-8A, City of Carlsbad,
San Diego County, California
References: 1. "Report of Rough Grading, Planning Area 14 (Lots 1 through 16), Including H.O.A. Lot 18
of Robertson Ranch, East Village Carlsbad Tract 04-26, Drawing 453-8A, Carlsbad,
San Diego County, California," W.O. 5949-B-SC, dated April 12, 2010, by GeoSoils, Inc.
"Memorandum: Discussion of Building Slab Subgrade Pre-Wetting, Planning Area 16 of
Robertson Ranch, City of Carlsbad, California," W.O. 5949-C-SC, dated October 8,2009, by
GeoSoils, Inc.
"Grading plans for Robertson Ranch PA 14, Sheet 3, Job no. 01-1014, Carlsbad Tract
C.T. 07-03," Drawing no.453-8A, print dated November 23, 2009, by O'Day Consultants, Inc.
Dear Ms. McHugh:
In accordance with your request, GeoSoils, Inc. (GSI) has reviewed the referenced reports
and plans with respect to the as-graded site conditions and has prepared this update
report. Grading and processing of original ground within the subject building pads was
observed and selectively tested by a representative of GSI during the earthwork phase of
development for the subject property. Based on our observations and testing, the subject
lots are considered suitable for their intended residential use. Geotechnical observations
and testing completed by this office during site grading are summarized in the referenced
GSI report (see Reference No. 1). As of the date of this letter, the site has not changed
significantly since the completion of grading and the issuance of the referenced GSI report
(see Reference No. 1); thus, the findings, conclusions, and recommendations presented
in that GSI report are generally considered valid and applicable with respect to the
construction and development of the subject building pads. As the onsite soil conditions
are expansive, pre-soaking is recommended, as indicated in References Nos. 1 and 2.
LIMITATIONS
Inasmuch as our study is based upon our review, engineering analyses, and laboratory
data, these conclusions and recommendations are professional opinions. These opinions
have been derived in accordance with current standards of practice, and no warranty is
express or implied. 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. In addition, this report may be subject to
review by the controlling authorities.
The opportunity to be of service is greatly appreciated: If you have any questions, please
do not hesitate to call our office.
Respectfully submitted,
tAAL
1.
Ge:Soils Inc. ('0
Certlfiad
Engineering Robert G. Crisma
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Engineering Geolo lC Geotechnical Engineer GE 2320 CP4L
RGC/ATG/J PF/jh
Distribution: (4) Addressee (U.S. Mail)
Brookfield Homes
Lots 1 through 7, PA-14, Robertson Ranch
File e \wp9\5900\5949b guf pal 4
GeoSoils, Inc.
W.O. 5949-13-SC
April 22, 2010
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