HomeMy WebLinkAboutP_Tabor Crowall Emergency Stabilization Work Plan
Project: #6245993 Tabor Crowall Revetment
Date: December 15, 2025
To: Mark Ruebel, Capital Strike Team Supervisor
River and Floodplain Management
Email: Mark.Ruebel@kingcounty.gov
Page 1
Contract #6245993 Tabor Crowall Revetment Construction Work Plan
Tabor Crowall Revetment – Construction Work
Plan
Scope of Work
· Secure the Cedar Riverbank as shown in the Tabor Crowall Revetment plans.
· Design and implement Tra ic Control Plans (TCP) to ensure safe access to the work zone.
· Clear and prepare the site for heavy equipment.
· Install silt fence and plastic covering for stockpiles.
· Install steel sheets for protection and weight dispersion.
· Haul and stockpile 3–5 man-sized rock.
· Place 3–5-man rock, working from east to west.
· Place Class 5 Riprap over large rocks.
· Compact rock using excavator bucket.
· Clean up stockpile area, spread topsoil, and hydroseed.
Supervisory Personnel
Name Company Role Phone
Mike Dysert Johansen
Construction
Division Manager 206-396-9784
Justin Drotz Johansen
Construction
General Foreman 253-421-2882
Jacob Obrigewitsch Johansen
Construction
Senior Project
Engineer
253-417-0877
Dan Madsen Johansen
Construction
Foreman 206-786-5190
Schedule
Work Hours: Monday – Friday, 7:00 AM to 5:30 PM
Description Start Date End Date
Prepare and Submit TCP 12/15/25 12/16/25
Clear and Prep Site 12/16/25 12/16/25
Project: #6245993 Tabor Crowall Revetment
Date: December 15, 2025
To: Mark Ruebel, Capital Strike Team Supervisor
River and Floodplain Management
Email: Mark.Ruebel@kingcounty.gov
Page 2
Contract #6245993 Tabor Crowall Revetment Construction Work Plan
Install BMPs 12/16/25 12/16/25
Install Steel Sheets 12/16/25 12/16/25
Haul and Place 3–5 Man
Rock
12/17/25 12/19/25
Haul and Place Class 5
Riprap
12/22/25 12/23/25
Remove Steel Sheets &
Spread Topsoil
12/23/25 12/24/25
Hydroseed 12/29/25 12/29/25
Construction Sequencing
1. Implement TCP for safe access; requires an additional lane on Eastbound SR 169 for steel sheet
and rock hauling.
2. Clear and level site; excavate 6” to align with sidewalk for steel sheet placement. Stockpile
excavated topsoil for later use.
3. Install silt fence and plastic sheeting over stockpiles.
4. Install steel sheets for protection and weight distribution; overlap sheets if necessary for stability.
5. Haul and stockpile 3–5 man-sized rock.
6. Place rock from east to west, maintaining safe distance from slide edge. Once stabilized, place
remaining rock and encapsulate with Class 5 Riprap.
7. Compact rock using excavator bucket.
8. Spread stockpiled topsoil and hydroseed.
9. Inspect sidewalk for damage and repair as needed.
Materials
· Silt Fence
· Plastic Sheeting
· Steel Sheets
· 3–5 Man Rock (Mixed)
· Class 5 Riprap
· Hydroseed
· Concrete (if sidewalk replacement is required)
Project: #6245993 Tabor Crowall Revetment
Date: December 15, 2025
To: Mark Ruebel, Capital Strike Team Supervisor
River and Floodplain Management
Email: Mark.Ruebel@kingcounty.gov
Page 3
Contract #6245993 Tabor Crowall Revetment Construction Work Plan
Equipment
· 200-Class Excavator (rock placement)
· 320 Loader (sheet handling and stockpile management)
· Mini Excavator (site cleanup)
Inspection & Testing
Spec Section Test Description Responsible Party Timing
N/A Visual Inspection King County During rock
placement
Prerequisites & Safety
· Prerequisite: City of Renton must approve TCP before work begins.
· Hold pre-activity meeting.
· Stay clear of leading edge.
· Use spotters for pedestrian safety.
· Make eye contact with operators before entering work zone.
· Wear eye protection at all times.
· Stay clear of trucks during rock dumping.
Hazardous Material Control
· Place only clean rock in river channel.
· Ensure spill kit is onsite and fully stocked.
Special Events & Notifications
· Notify King County and City of Renton if riverbank erosion approaches roadway.
· Suspend work if river levels become unmanageable.
Important Notes
· Site conditions can change rapidly; inspect frequently for shifting embankments.
· Keep personnel away from slide edge until stabilized.
Contract #6245993
Name: Tabor Crowall Revetment Site Preparation Plan
Silt Fence
Clearing Area
Topsoil Stockpile
Contract #6245993
Name: Tabor Crowall Revetment Site Protection Stabilization Plan
Steel Plate 8x20
Coldmix Asphalt Ramp
Plastic Sheeting
Contract #6245993
Name: Tabor Crowall Revetment Scour/Slide Repair Plan
Steel Plate 8x20
Coldmix Asphalt Ramp
Plastic Sheeting
Basalt Rocks
Sidedump trucks will haul to stockpile. A loader will be
utilized to manage stockpile
200 Class Excavator will take from stockpile and place
rock within the Scour area
Scour/Slide Repair Plan
Contract #6245993
Name: Tabor Crowall Revetment
Place Mixed 3-5 Man Rock
Scour/Slide Repair Plan
Contract #6245993
Name: Tabor Crowall Revetment
Place Class 5 Riprap
over Larger Rock
Scour/Slide Repair Plan
Contract #6245993
Name: Tabor Crowall Revetment
60'-11"
Scour/Slide Repair Plan
Contract #6245993
Name: Tabor Crowall Revetment
60'-11"
Tabor/Crowall Grading Exhibit
Date Prepared - 06/13/2025
TC
D
S
TC
M
I
D
TC
U
S
30'-0"
Tabor/Crowall Grading Exhibit
Date Prepared - 06/13/2025
proposed grade,
typ
existing grade,
typ
current river level (estimated and fluctuating)
pre-slide/scour bank per topo survey data
Current conceptual design final grading
(gray line type)
estimated slide/scour (based on
drone photo post-slide) (?)
possible residual slide debris at base on head
scarp (?) removal is highly recommended prior to
placement of geotextile and riprap to provide
suitable foundation base for armor.
16-oz non-woven
separation/filter geotextile for
riprap bedding (such as
Mirafi/Solmax 1160N. Secure
with pins
class 5 riprap (basalt or similar)
for armoring(permanent or
temporary) red line type
setup paint marks/survey nails on road shoulder to
monitor movement