HomeMy WebLinkAboutPS 2019-0007; MADISON STREET APARTMENTS; FINAL COMPACTION 2; 2022-08-23
August 23, 2022 CTE Job No. 10-16609T
Prophet Solutions
Attention: Mark Nolting
814 S El Camino Real
San Clemente, California 92672
Telephone: (760) 330-3242 Via Email: mnolting44@gmail.com
CC: George Stoutenburg, george@prophetsolutionsinc.com
Subject: Final Certification of Compaction
Proposed Madison Apartments
3130 Madison Street, Carlsbad, California
Mr. Nolting:
As requested, Construction Testing & Engineering, Inc. (CTE) has performed observation and testing of
compacted fill materials during recent construction. This letter is provided as certification that the
recent fill or backfill placement has been conducted in substantial conformance with current industry
standards and the applicable plans (City of Carlsbad Project No. PD 2019-0007, Drawing No. 516-5A).
Field-testing of the compacted trench fill material was conducted as scheduled by the contractor
between December 29, 2021 and May 11, 2022. Testing was performed in general accordance with
ASTM D-6938 (nuclear method). Results of the field-testing indicate that fill materials in the subject
areas were compacted to a minimum of 90 and 95 percent (depending on location and requirements) of
the laboratory maximum dry density as determined by test method ASTM D-1557. Tabulated results of
the field compaction testing performed are provided in the attached Table I, “Compaction Test
Summary”. The laboratory maximum density results are provided in Table II, “Laboratory Test
Results.” The attached Figure 1 provides approximate compaction test locations.
This letter is subject to the same limitations as the other project geotechnical documents. The
opportunity to be of service is appreciated. If you have any questions, please do not hesitate to contact
this office.
Respectfully submitted,
CONSTRUCTION TESTING & ENGINEERING, INC.
Rodney J. Jones, GE #3205
Senior Engineer
MB/RJJ:ach
A Universal
Engineering Construction Testing & Engineering, Inc.
Sciences
Company Inspection I Testing I Geotechnical I Environmental & Construction Engineering I Civil Engineering I Surveying
1441 Montiel Road, Suite 115 I Escondido, CA 92026 I Ph (760) 746-4955 I Fax (760) 746-9806 I www.cte-inc.net
TABLE I
COMPACTION TEST SUMMARY
Job Name: Madison Apartments Job No. 10-16609T
Job Address: 3130 Madison Street, Carlsbad, California Date: 6/28/2022
Date Test Location Elevation Density Moisture Relative Soil
No. or Depth pcf Content Compaction Type
Feet % Dry %
Weight
12/29/2021 1 Middle of Garage Subgrade 50.0 118.3 4.5 90% 1
3/24/2022 2 E Side of Street, N of Apt Garage Entrance 47.0 121.2 10.1 96% 2
3/24/2022 3 W Side of Street, Slightly S of Garage Entrance 47.0 122.4 10.5 97% 2
5/11/2022 4
E Side of Road, N of Garage Entrance From
Street Base 48.0 109.2 15.3 96% 3
5/11/2022 5
E Side of Road, NW of Garage Entrance
From Street Base 48.0 110.3 14.2 97% 3
5/11/2022 6
W Side of Road, SW of Garage Entrance
From Street Base 48.0 109.8 14.6 96% 3
5/11/2022 7
E Side of Road, N of Garage Entrance From
Street Base, AC 48.5 145.2 - 96% 4
5/11/2022 8
E Side of Road, NW of Garage Entrance
From Street Base, AC 48.5 144.8 - 96% 4
5/11/2022 9
W Side of Road, SW of Garage Entrance
From Street Base, AC 48.5 144.5 - 96% 4
** TEST FAILED, SEE RETEST 1
TABLE II
LABORATORY TEST DATA
Job Name: Madison Apartments Job No. 10-16609T
Job Address: 3130 Madison Street, Carlsbad, California Date 6/28/2022
Maximum Optimum
Sample No.Dry Density Moisture Soil
pcf Content Description
%wt
1 131.3 8.9
2 125.8 9.2
3 113.8 15.4
4 151.0 -
Moderate Brown (Class II Base)
Asphalt Concrete
Dark Brown (SM)
Moderate Brown SM
2