HomeMy WebLinkAbout714 Material TestingTechnician / Inspector:Sydney Limberg 03/04/2026Inspection Date:
Certification No.:Limberg, Sydney NUCLEAR GAUGE CERTIFIED USER
Contractor:Newton
Type of Inspection / Testing performed on this day:Engineered Fill /Test Only / Other
Work Inspected / Tested:
Arrived on site in the PM. Met with Mason with Newton. He directed me to overexcavation for power block. I performed one nuclear
density test at the bottom of the overexcavation. Mason indicated this was compacted with a sheepsfoot wheel then jumping jack. I
collected a sample of the site soils for a max density curve.
Results of the max density curve indicate the test achieved 90% relative compaction.
The work inspected/tested MET the requirements of the approved documents.
Signature
Limberg, Sydney NUCLEAR GAUGE CERTIFIED USER
Name/Certification
Daily Field Report DRAFTD00000100Report #:
San Luis Obispo
4378 Old Santa Fe Road
San Luis Obispo, CA 93401
Phone: (805) 5443276
Client:
City of San Luis Obispo
919 Palm St
San Luis Obispo, CA 93401
Project:
306126003
City of SLO Battery Electric Charging
Prado Road
San Luis Obispo, CA
Preliminary daily report pending review.Page 1 of 3Page 1 of 2
Technician / Inspector:Sydney Limberg 03/04/2026Inspection Date:Certification No.:Limberg, Sydney NUCLEAR GAUGE CERTIFIED USER Contractor:NewtonType of Inspection / Testing performed on this day:Engineered Fill /Test Only / OtherWork Inspected / Tested:Arrived on site in the PM. Met with Mason with Newton. He directed me to overexcavation for power block. I performed one nucleardensity test at the bottom of the overexcavation. Mason indicated this was compacted with a sheepsfoot wheel then jumping jack. Icollected a sample of the site soils for a max density curve.Results of the max density curve indicate the test achieved 90% relative compaction.
The work inspected/tested MET the requirements of the approved documents.
Signature
Limberg, Sydney NUCLEAR GAUGE CERTIFIED USER
Name/Certification
Daily Field Report DRAFTD00000100Report #:
San Luis Obispo
4378 Old Santa Fe Road
San Luis Obispo, CA 93401
Phone: (805) 5443276
Client:
City of San Luis Obispo
919 Palm St
San Luis Obispo, CA 93401
Project:
306126003
City of SLO Battery Electric Charging
Prado Road
San Luis Obispo, CA
Preliminary daily report pending review.Page 2 of 3Page 2 of 2
Technician / Inspector:Sydney Limberg 03/12/2026Inspection Date:
Certification No.:Limberg, Sydney NUCLEAR GAUGE CERTIFIED USER
Contractor:Newton
Type of Inspection / Testing performed on this day:Engineered Fill /Test Only / Other
Work Inspected / Tested:
Arrived on site in the AM for compaction testing of aggregate base for conduit trench backfill. Met with Mason with Newton and Brett with
the City. Brett indicated the base used was 6" of Cal Portland Rocky Canyon Class II over sand around pipe. I tested four locations and
collected a sample for a max density curve.
Results of the max density curve indicate the tests did not achieve 95% relative compaction.
Signature
Limberg, Sydney NUCLEAR GAUGE CERTIFIED USER
Name/Certification
Daily Field Report DRAFTD00000200Report #:
San Luis Obispo
4378 Old Santa Fe Road
San Luis Obispo, CA 93401
Phone: (805) 5443276
Client:
City of San Luis Obispo
919 Palm St
San Luis Obispo, CA 93401
Project:
306126003
City of SLO Battery Electric Charging
Prado Road
San Luis Obispo, CA
Preliminary daily report pending review.Page 1 of 3Page 1 of 2
Technician / Inspector:Sydney Limberg 03/12/2026Inspection Date:Certification No.:Limberg, Sydney NUCLEAR GAUGE CERTIFIED USER Contractor:NewtonType of Inspection / Testing performed on this day:Engineered Fill /Test Only / OtherWork Inspected / Tested:Arrived on site in the AM for compaction testing of aggregate base for conduit trench backfill. Met with Mason with Newton and Brett withthe City. Brett indicated the base used was 6" of Cal Portland Rocky Canyon Class II over sand around pipe. I tested four locations andcollected a sample for a max density curve.Results of the max density curve indicate the tests did not achieve 95% relative compaction.
Signature
Limberg, Sydney NUCLEAR GAUGE CERTIFIED USER
Name/Certification
Daily Field Report DRAFTD00000200Report #:
San Luis Obispo
4378 Old Santa Fe Road
San Luis Obispo, CA 93401
Phone: (805) 5443276
Client:
City of San Luis Obispo
919 Palm St
San Luis Obispo, CA 93401
Project:
306126003
City of SLO Battery Electric Charging
Prado Road
San Luis Obispo, CA
Preliminary daily report pending review.Page 2 of 3Page 2 of 2
Technician / Inspector:Aileen Flynn 03/13/2026Inspection Date:
Certification No.:Flynn, Aileen NUCLEAR GAUGE CERTIFIED USER
Contractor:Newton Construction
Type of Inspection / Testing performed on this day:Engineered Fill /Trench Backfill
Work Inspected / Tested:
Arrived on site in the AM for nuclear density retests of failed test locations from 03/12/2026. I met with Mason (Newton Construction). I
performed 4 nuclear density retests at base grade elevation in utility trench backfill areas. All locations tested met the 95 percent
relative compaction specification with moisture over optimum moisture content. I informed Mason and Brett (City of SLO) of the results.
Work was inspected/tested per the applicable sections of CBC Chapter 17
The work inspected/tested MET the requirements of the approved documents.
Signature
Flynn, Aileen NUCLEAR GAUGE CERTIFIED USER
Name/Certification
Daily Field Report DRAFTD00000300Report #:
San Luis Obispo
4378 Old Santa Fe Road
San Luis Obispo, CA 93401
Phone: (805) 5443276
Client:
City of San Luis Obispo
919 Palm St
San Luis Obispo, CA 93401
Project:
306126003
City of SLO Battery Electric Charging
Prado Road
San Luis Obispo, CA
Preliminary daily report pending review.Page 1 of 3Page 1 of 2
Technician / Inspector:Aileen Flynn 03/13/2026Inspection Date:Certification No.:Flynn, Aileen NUCLEAR GAUGE CERTIFIED USER Contractor:Newton ConstructionType of Inspection / Testing performed on this day:Engineered Fill /Trench BackfillWork Inspected / Tested:Arrived on site in the AM for nuclear density retests of failed test locations from 03/12/2026. I met with Mason (Newton Construction). Iperformed 4 nuclear density retests at base grade elevation in utility trench backfill areas. All locations tested met the 95 percentrelative compaction specification with moisture over optimum moisture content. I informed Mason and Brett (City of SLO) of the results.Work was inspected/tested per the applicable sections of CBC Chapter 17The work inspected/tested MET the requirements of the approved documents.
Signature
Flynn, Aileen NUCLEAR GAUGE CERTIFIED USER
Name/Certification
Caption:test location map (approx.)
Daily Field Report DRAFTD00000300Report #:
San Luis Obispo
4378 Old Santa Fe Road
San Luis Obispo, CA 93401
Phone: (805) 5443276
Client:
City of San Luis Obispo
919 Palm St
San Luis Obispo, CA 93401
Project:
306126003
City of SLO Battery Electric Charging
Prado Road
San Luis Obispo, CA
Preliminary daily report pending review.Page 2 of 3Page 2 of 2
Technician / Inspector:Charles Hundertmark 03/19/2026Inspection Date:
Certification No.:Hundertmark, Charles ACI CONCRETE FIELD TESTING GRADE 1 02344816
Contractor:Newton
Type of Inspection / Testing performed on this day:Concrete Sampling
Work Inspected / Tested:
Arrived on site in the am and met Brett with the City of SLO for the sampling and testing of concrete planned to be poured on a mat slab
for a battery ev charging station. I observed vibration was made upon placement of the concrete. I took a sample from load 1. I
performed temperature, slump and cast 1 set of 5 (4x8) cylinders. A cleanup load of 6 cubic yards was ordered.
The work inspected/tested MET the requirements of the approved documents.
Signature
Hundertmark, Charles ACI CONCRETE FIELD TESTING
GRADE 1 02344816
Name/Certification
Daily Field Report DRAFTD00000400Report #:
San Luis Obispo
4378 Old Santa Fe Road
San Luis Obispo, CA 93401
Phone: (805) 5443276
Client:
City of San Luis Obispo
919 Palm St
San Luis Obispo, CA 93401
Project:
306126003
City of SLO Battery Electric Charging
Prado Road
San Luis Obispo, CA
Preliminary daily report pending review.Page 1 of 2Page 1 of 1
Structure / Location:ELECTRICAL PAD / YARD /mat slab for battery ev charging station
Sampled By:Hundertmark, Charles NUCLEAR GAUGE CERTIFIED USER 03/19/2026Sample Date:
SAMPLING INFORMATION ConcreteMaterial Type:
Slump (in)Spec:2.00 4.00 Actual:3.00 Pass
Air Content (%)Spec:N/A N/A Actual:N/A N / A
Unit Wt. (pcf)Spec:N/A N/A Actual:N/A N / A
Mix Temp. (F)Spec:50 90 Actual:76 Pass
Air Temp. (F)71
Specified Strength (psi):4000 @ 28 days
Supplier:San Benito Supply
Mix Number:45.45L Load #:1 of 2
Truck #:873 Ticket #:546905
Time Batched:08:07 Time Sampled:09:15
Set #:1 /1 10.00 yds of 16.00 total yds
Sampled From:Chute
TESTING INFORMATION
Date Received Initial Curing Final Curing
03/20/2026 Cooler Cure Tank
ID Date Tested Age
(Days)
Diameter
(in)
Height
(in)
Cross Sect.
Area (in )
Max Load (lbs)Comp. Strength
(psi)
Fracture
Type
1152 1 03/26/2026 7 4.01 8.00 12.63 51,080 4,040 3
1152 2 04/16/2026 28 4.01 8.00 12.63 62,640 4,960 2
1152 3 04/16/2026 28 4.01 8.00 12.63 62,530 4,950 3
1152 4 04/16/2026 28 4.01 8.00 12.63 61,000 4,830 2
ASTM Methods as applicable: C31, C39, C143, C172, C231, C617, C1019, C1064, C1231
7 Day 4050 psi, 28 Day 4910 psiAverages (psi):
Lab Technician:Zachary Wimberley
Remarks:
o
o
2
Compression Test Report SRC00000101Report #:
San Luis Obispo
4378 Old Santa Fe Road
San Luis Obispo, CA 93401
Phone: (805) 5443276
Client:
City of San Luis Obispo
919 Palm St
San Luis Obispo, CA 93401
Project:
306126003
City of SLO Battery Electric Charging
Prado Road
San Luis Obispo, CA
The results contained herein apply only to the items inspected or tested. This report shall not be reproduced except in full without
prior written approval of Earth Systems.Page 1 of 2Page 1 of 1