2025 GEO FINAL SPECIAL INSPECTION REPORT_7415 Braemar Dr_BLD 20190610_20190812.pdf
PO Box 30759, Seattle, WA 98113 - Phone: 206-525-5097
Final Geotechnical
Inspections Report
Permit BLD 2019 0610
To: City of Edmonds Building Services Department
Building Division
1221 Fifth Ave N
Edmonds, WA 98020
Subject: FINAL GEOTECHNICAL INSPECTIONS REPORT
7415 Braemar Drive
Edmonds, Washington
Permit No. BLD 20190610
TGG Project: 2025-3
Date: August 12, 2019
The Galli Group performed geotechnical special inspections for the above project. The project
consisted of disassembling an unpermitted segmental retaining wall (SRW), to install reinforcing
geogrids, and reducing the lower terrace to create a planting bed in order to bring the work
within compliance with height and setback restrictions and to construct an engineered and
permitted SRW. The Galli Group provided the design drawings and the following geotechnical
special inspections.
1. Erosion Control Temporary: The erosion control devices appear to have functioned
adequately throughout the project.
2. Observe and Monitor excavation: Temporary excavation for geogrid reinforced zone
was accomplished using hand equipment and maintained stability throughout the
project.
3. Subsurface drainage installation: The contractor installed wall drains consisting of
4-inch perforated pipe, surrounded by ¾ inch clean crushed aggregate, enveloped in
nonwoven filter fabric. Zone above the pipe was also backfilled with clean crushed
aggregate per plan. All perforated pipe connects to a lateral spreader or dispersion
trench 4 feet downslope from the southernmost planter wall. Any collected water will
disperse from the trench into the slope.
FINAL GEOTECHNICAL INSPECTION REPORT
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2025 GEO FINAL SPECIAL INSPECTION REPORT_7415 Braemar Dr_BLD 20190610_20190812 The Galli Group
4. Geogrid Inspection: TGG verified the geogrid strength direction, length, and layout.
Geogrid place was placed according to approved plan.
5. Verify fill and compaction: The backfill consisted of native sand and gravel and
recycled concrete. Backfill was compacted per geotechnical engineer approved
method consisting of multiple passes of vibratory compactor on 4-inch loose lifts to a
firm non-yielding condition.
6. Permanent Erosion Control: TGG Engineer visited the site today. The project area
has been permanently stabilized against erosion. All disturbed soils are amended and
mulched. Slope areas are covered with jute netting and straw wattles to protect the
slope while the planting gets established. Area appeared adequately stabilized for
winter conditions.
7. Verify design constraints: All planters constructed within the setbacks were restricted
to maximum of 3 feet retained height. The south terrace wall was constructed outside
of the setback area per plan.
To the best of our knowledge the above improvements were constructed in general accordance
with the approved plans. The SRW and geotechnical elements were completed as of this date.
Landscaping is scheduled for this fall, and straw wattles for erosion control will be removed next
spring when the plantings have become established.
Sincerely,
THE GALLI GROUP
Paul L. Stoltenberg, P.E.
Project Geotechnical Engineer
8-12-2019