HomeMy WebLinkAboutMS 16-05; 1284 PINE AVENUE; FINAL SOILS REPORT; 2022-08-19W. C. HOBBS, CONSULTING ENGINEER
28411 PACHECO
MISSION VIEJO, CALIFORNIA 92692
(951) 660-9800
Date: August 19, 2022
Project No: 19014-3
1284 Pine Partners, LLC
1284 Pine Avenue
Carlsbad, California 92008
Subject: Final Geotechnical Report, Proposed Residence,
1284 Pine Avenue, Carlsbad, California 92008
Attention: City of Carlsbad Building Official
Pursuant to a requirement by the City of Carlsbad, this document has been prepared to
serve as a “final” geotechnical report for the grading of the site for the proposed residence
located at 1284 Pine Avenue. Testing of the existing pad was conducted and reported
in referenced report dated November 16, 2020, and is attached hereto as Appendix B.
Geotechnical aspects of the project have been completed in conformity with the approved
referenced reports provided by this firm as included in Appendix A and the approved
grading plan drawings.
The opportunity to be of service is appreciated. Should questions or comments arise
pertaining to this document, or if we may be of further service, please do not hesitate to
call our office.
Respectfully Submitted,
W. C. HOBBS, CONSULTING ENGINEER
Bill Hobbs, RCE 42265
Civil Engineer
Distribution: Addressee (3)
Attachments: Appendix A, References
Appendix B, Referenced Report, Compaction Tests, Nov. 16, 2020
W. C. HOBBS, CONSULTING ENGINEER
APPENDIX A
REFERENCES
W. C. HOBBS, CONSULTING ENGINEER
REFERENCES
Preliminary Geotechnical Investigation, Two Residential Lots, TPM MS13-03, 0.26 +/-
Acres, Lot 9, PM 1744, APN 205-020-04, 1284 Pine Avenue, Carlsbad, California, by
ESI, PN 120808-PL, August 20, 2012
Update to Preliminary Geotechnical Investigation, Two Residential Lots, TPM MS13-03,
0.26 +/- Acres, Lot 9, PM 1744, APN 205-020-04, 1284 Pine Avenue, Carlsbad,
California, by ESI, PN 120808-PL, September 5, 2013
Geotechnical Update, Proposed 2nd Dwelling, APN 205-020-04, Lot 9 of Tract Map No
1744, 1284 Pine Avenue, City of Carlsbad, San Diego County, California, by South
Shore Testing & Environmental, WO 1931503.00U, May 9, 2016.
Certification of Pad, Proposed 2nd Dwelling, APN 205-020-04, Lot 9 of Tract Map No
1744, 1284 Pine Avenue, City of Carlsbad, San Diego County, California, by South
Shore Testing & Environmental, WO 1931503.22, May 9, 2016.
Geotechnical Update, As-Graded Conditions, 1284 Pine Avenue, Carlsbad, California
92008, by W. C. Hobbs, Consulting Engineer, June 6, 2019, PN 19014-1
Foundation Plan Review, Proposed Residence, 1284 Pine Avenue, Carlsbad, California
92008, by W. C. Hobbs, Consulting Engineer, June 20, 2019
Geotechnical Update, Finished Pad Compaction Test Results, 1284 Pine Avenue,
Carlsbad, California 92008, by W. C. Hobbs, Consulting Engineer, November 16, 2020,
PN 19014-2
Observation of Foundation Excavations, Proposed Residence, 1284 Pine Avenue,
Carlsbad, California 92008, by W. C. Hobbs, Consulting Engineer, August 27, 2021
W. C. HOBBS, CONSULTING ENGINEER
APPENDIX B
COMPACTIONS TEST REPORT
NOVEMBER 16, 2020
W. C. HOBBS, CONSULTING ENGINEER
27834 ESPORLAS
MISSION VIEJO, CALIFORNIA 92692
(951) 660-9800
Date: November 16, 2020
Project No: 19014-2
1284 Pine Partners, LLC
1284 Pine Avenue
Carlsbad, California 92008
Subject: Geotechnical Update, Finished Pad Compaction Test Results,
1284 Pine Avenue, Carlsbad, California 92008
This letter report has been prepared to indicate that onsite observations and review, along
with compaction testing confirms that the subject site has been graded and remains in
substantial conformance to the lines and grades and compaction as completed pursuant
to the referenced report. The building project may proceed at this time without further
grading requirements.
The opportunity to be of service is appreciated. Should questions or comments arise
pertaining to this document, or if we may be of further service, please do not hesitate to
call our office.
Respectfully Submitted,
W. C. HOBBS, CONSULTING ENGINEER
Bill Hobbs, RCE 42265
Civil Engineer
Distribution: Addressee (1) pdf
Attachments: Compaction Test Results
Test Location Map (NTS)
Reference: Certification of Pad, Proposed 2nd Dwelling, APN 205-020-04, Lot 9 of Tract
Map No 1744, 1284 Pine Avenue, City of Carlsbad, San Diego County,
California, by South Shore Testing & Environmental, WO 1931503.00U,
May 9, 2016
Appendix A
Summary of Field Density Tests
Project No: 19014-2
Report dated November 16, 2020
Project for: 1284 Pine Partners, LLC
Test #Date Location Elevation Curve Max. (pcf)M.C. %Dens. (pcf)Comp. %Remarks
1 Nov-20 PAD AREA 108.5fp 2 122.3 3.5 114.6 94 FILL
2 Nov-20 PAD AREA 108.5fp 2 122.3 3.7 113.6 93 FILL
3 Nov-20 PAD AREA 108fp 2 122.3 4.0 112.7 92 FILL
4 Nov-20 PAD AREA 110.5fp 2 122.3 4.5 112.3 92 FILL
FIELD DENSITY TESTS WERE CONDUCTED IN ACCORDANCE WITH ASTM D6938-10 (NUCLEAR)
fp DENOTES FINISHED PAD TEST
fs DENOTES FINISHED SURFACE TEST
ELEVATION IS RELATIVE TO GRADING PLAN TOPOGRAPHY
_.(PARn
PM·. _g15 .
.' . .. .
4"T
'CURI Al
ri·
112t 3 Tll/107.97 TF
FF= 109.17
FP = 108.50
113.97 Tl/ /110.63 T.F.
-----J~,s -~-
CCNCRETE"V'
SURFACE DRAIN 8.BC/
~ <§,
¥----IF=-~--.;;;.-~+---------+----:LlQ!!:!~------::;;-'"'------L'"~
EX. 4' PVC i!0,5¼=> -------------· -------------
21U4'
EX, i.!AIN PIPE ~ ~VJ 103.50 IE CDAYUGHT>
-?
GRADING PLAN
GRAPHIC SCALE ~~ SYMBOLS
5 10 20 40
I APPROXIMATE LOCATION ~-~ ( IN FEET ) linch=I0 ft.
OF FEILD DENSITY TEST 0
SERVICE PER CITY OF
CARLSBAD STANDARD
DRAIIING 11-2 FDR CITY
INSPECTION.
DRIVEIIAY APPROACH PER
SDRSD G14D, MODIFIED TD
FIT NEIGHBORHOOD
REQUIREMENTS.
NOTE: CONTRACTOR SHALL OBTAIN
RIGHT-OF-WAY PERMIT PRIOR TO ANY
WORK DONE IN THE CITYS' RIGHT-OF-WAY