APPENDIX B4-Historic-Info-2016-Final-Dredge-Prism.pdf
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- MAINTENANCE DREDGING AT USCG SECTOR COLUMBIA RIVER [FORMERLY MARINE SECURITY UNIT (MSU)] PORTLAND, OR
- Solicitation number
- 70Z08825B0000088
About this file
This file is a detailed dredging project documentation for the US Coast Guard's Marine Safety Unit (MSU) Swan Island location in Portland, Oregon. The project involved maintenance dredging of up to 1,000 cubic yards at the Swan Island Lagoon, with a final project depth of -11.65 feet Columbia River Datum (CRD), allowing one foot of over-depth to -12.65 feet. The work was completed between July 1 and October 31, 2016, using hydrographic surveying techniques, multi-beam sonar systems, and specialized dredging software (WinOPS) to precisely track and document the dredging process.
The documentation includes comprehensive technical details such as pre-dredging and post-dredging bathymetric surveys, precise coordinate mapping, debris removal, and sand cover placement. The project team from Marine Industrial Construction, LLC documented the entire process, including transect lines, bucket print locations, and slope characteristics. Key technical specifications included using an R2Sonic 2022 Multi-beam Sonar System, collecting data in accordance with US Army Corps of Engineers standards, and ensuring all dredged materials were loaded into a scow and disposed of at an upland site. The total dredging volume was estimated at 450 cubic yards, with a sand cap of 94 cubic yards.
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Scale: Noted on Maps
Drawn By: JAB
Approved By: MMB
Date: 10/27/16
Marine Industrial Construction, LLC 10500 SW Wilsonville Rd
Wilsonville, OR, 97070
(503) 682-2525
Sheet Contents:
Cover Sheet & Index
Sheet Number: 1 of 12 Project Number: 2016-109
HSCG88-16-C-PQQ197
US Coast Guard
MSU Swan Island
Dredging Project 2016
Sheet Number 1: Cover Sheet & Index Sheet Number 2: Tide and Ground Control Sheet Number 3: Bid Engineering Sheet Number 4: Spud Configuration Sheet Number 5: Project Area and Dredging Prism Sheet Number 6: Revised Dredging Prism and Design Sheet Number 7: Pre Dredging Prism Transects & Volumes Sheet Number 8: Post Dredge Prism with Debris Sheet Number 9: Post Sand Cover Prism Transects and Volumes Sheet Number 10: Final Dredge Prism with Annotated Details Sheet Number 11: Final Transects Sheet Number 12: Dredging Software (WinOPS) Bucket Prints Over Time During Dredging
SHEET INDEX
Coordinates are Oregon State Plane North, International Feet, NAD 1983, Columbia River Data Vertical Control
PROJECT NOTES
This work includes maintenance dredging of up to 1,000 cubic yards (CY) at the U.S.
Coast Guard (USCG), Marine Safety Unit (MSU) Portland. The final project depth shall is -11.65 ft. Columbia River Datum (CRD).
One foot of over depth is authorized to -
12.65 ft. All dredged shall be loaded into a scow and disposed of at an upland site. All work was completed during the approved in-water work window of July 01, to October 31.
PROJECT DESCRIPTION Project LocationVICINITY MAP
MIC TEAM MEMBER
Michael Eakin, Lead Estimator Joe Bernert, Quality Control Reviewed by D. J. Bernert, PE
PROJECT TEAM
2016 USCG MSU SWAN ISLAND DREDGING
Engineering & Project Design/Deployment
Marine Industrial Construction, LLC Final Dredging Prism and Related Data/Information
USCG CONTACTS/LEADS
Keith Ruch, USCG Contracting Officer Representative (COR), Oakland Engineering Dave Stalters, Project Manager Chief, Environmental Management Branch Civil Engineering Unit Oakland, CA 94612
MKCS Jon Franco, MSU Point of Contact Marine Safety Unit Portland 6767 N. Basin Ave.
Portland, OR 97217-3992
Approved By: MMB
Date: 10/27/16
Marine Industrial Construction, LLC 10500 SW Wilsonville Rd
Wilsonville, OR, 97070
(503) 682-2525
Sheet Contents:
Tide Control and Ground Control
Sheet Number: 2 of 12 Project Number: 2016-109
HSCG88-16-C-PQQ197
US Coast Guard
MSU Swan Island
Dredging Project 2016
\ NGS Control Verified
NOAA - Survey Control Points 0 900 1,800450
Feet
| RD3092 | NAD83(1991) 45 34 07.25164(N) | 122 43 25.65639(W) |
| NAVD88 ORTHO HEIGHT - 37 feet | ||
| STATE PLANES 701,265.86 7,632,677.31 | ||
| RD3083 | NAD 83(1991) 45 34 05.28313(N) 122 43 13.91922(W) | |
| NAVD88 ORTHO HEIGHT – 37 feet | ||
| STATE PLANES 701,043.60 7,633,506.45 |
RD3048 NAD 83(1991) 45 33 52.15428(N) 122 42 31.86137(W)
| NAVD88 ORHO HEIGHT 37 feet |
| STATE PLANES 699,632.39 7,636,460.85 |
Tide Control Ground Control
Ground Control
Approved By: MMB
Date: 10/27/16
Marine Industrial Construction, LLC 10500 SW Wilsonville Rd
Wilsonville, OR, 97070
(503) 682-2525
Sheet Contents:
Bid Engineering
Sheet Number: 3 of 12 Project Number: 2016-109
HSCG88-16-C-PQQ197
US Coast Guard
MSU Swan Island
Dredging Project 2016
Project permit conditions are outlined in detail in the following project specifications:
1. CERCLA Notification of Work, NWP-2013-172, U.S. Coast Guard, Swan Island Lagoon, Multnomah County, Oregon.
2. National Marine Fisheries Services (3/31/2016) Biological
Opinion, Reference Number WCr-2016-4197.
3. Oregon Department of Environmental Quality 401 Water Quality
Certification (2013-00172).
4. US Army Corp of Engineers, Portland District, Compliance
Certification, NWP-2013-172.
Disposal to upland disposal site (as defined in the specification and submittals.
Work Window for the Project is July 1, 2016 to October 31, 2016.
Data presented in Oregon State Plane Coordinates, North, International Feet, NAD 1983, Columbia River Data Vertical Control
PROJECT NOTES
A’
A
A’ A
USCG MSU Portland: Bid Engineering
Rip Rap
Begin
End
Dredging Zone
Dredging Prism / Boomed Area
Docks
Rip Rap Boundary
Bathymetric Depth
Recent Aerial Imagery superimposed
0 10 25 50 100
FEET
Approved By: MMB
Date: 10/27/16
Marine Industrial Construction, LLC 10500 SW Wilsonville Rd
Wilsonville, OR, 97070
(503) 682-2525
Sheet Contents:
Spud Configuration for Dredging
Sheet Number: 4 of 12 Project Number: 2016-109
HSCG88-16-C-PQQ197
US Coast Guard
MSU Swan Island
Dredging Project 2016
Project permit conditions are outlined in detail in the following project specifications:
1. CERCLA Notification of Work, NWP-2013-172, U.S. Coast Guard, Swan Island Lagoon, Multnomah County, Oregon.
2. National Marine Fisheries Services (3/31/2016) Biological
Opinion, Reference Number WCr-2016-4197.
3. Oregon Department of Environmental Quality 401 Water Quality
Certification (2013-00172).
4. US Army Corp of Engineers, Portland District, Compliance
Certification, NWP-2013-172.
Disposal to upland disposal site (as defined in the specification and submittals.
Work Window for the Project is July 1, 2016 to October 31, 2016.
Data presented in Oregon State Plane Coordinates, North, International Feet, NAD 1983, Columbia River Data Vertical Control
PROJECT NOTES
USCG MSU Portland
Spud
Sp u d
Swing on Spud
Swing on Spud
Dredge Swath
Spud Configuration for Dredging
100 foot length
36 foot width
Dock
Approved By: MMB
Date: 10/27/16
Marine Industrial Construction, LLC 10500 SW Wilsonville Rd
Wilsonville, OR, 97070
(503) 682-2525
Sheet Contents:
Project Area and Dredging Prism
Sheet Number: 5 of 12 Project Number: 2016-109
HSCG88-16-C-PQQ197
US Coast Guard
MSU Swan Island
Dredging Project 2016
Project Area Dredging Prism
Approved By: JAB
Date: 10/27/16
Marine Industrial Construction, LLC 10500 SW Wilsonville Rd
Wilsonville, OR, 97070
(503) 682-2525
Sheet Contents:
Dredging Prism and Design
Sheet Number: 6 of 12 Project Number: 2016-109
HSCG88-16-C-PQQ197
US Coast Guard
MSU Swan Island
Dredging Project 2016
Pre Dredging Prism Maps Design & Volumes
Detailed dredging prism engineering and maps were compiled from the contracted pre-dredging survey.
Specifications include:
• Minimum Dredging Depth -11.65 Columbia River Data (CRD)
• Maximum Dredging Depth -12.65 Columbia River Data (CRD)
Ground control to be determined on site. Marking on dock for additional site Quality Control during project implementation. Data is incorporated into the WinOPS dredging software for real-time evaluation.
Hydrographic Surveying completed by a third party contractor: James Glaeser (NW Hydro). James is an American Congress on Surveying and Mapping (ACSM) Certified Hydrographer (#222).
Survey completed on 10/4/2016.
Soundings were collected using a R2Sonic 2022 Multi-beam Sonar System operation at 400 kH. Data processing was completed using HyPack HyWeep Software. All bathymetric data was collected in accordance with the US Army Corp of Engineers Hydrographic Survey Manual EM-112-1003 (January 2002).
Base survey data (from Northwest Hydro Inc) is also provided to the USCG for Quality Control purposes.
PROJECT NOTES
Transect Lines presented on next Sheet See Sheet 8 for Transects
Approved By: JAB
Date: 10/27/16
Marine Industrial Construction, LLC 10500 SW Wilsonville Rd
Wilsonville, OR, 97070
(503) 682-2525
Sheet Contents:
Dredging Prism Transects
Sheet Number: 7 of 12 Project Number: 2016-109
HSCG88-16-C-PQQ197
US Coast Guard
MSU Swan Island
Dredging Project 2016
Pre Dredging Prism Transects & Volumes
Dredging volumes were based on the pre-dredging surveying and the dredging prism. The dredging prism was refined to be larger since the slope of the shoreline (where rip rap is expected) is slightly north (shoreward) of the original proposed prism line (on average 7 feet). Correspondingly the northwest edge of the rip rap is expected to extend into the berth slightly more than the original prism (or rip rap may have falling off the armoring into the prism). Several other features were identified with shape angles indicating an anthropogenic feature, or rip rap in the prism (identified on the map).
Dredging is to the rip rap with a right to refusal (not to impact structural engineering).
The dredging volume of the primary prism to -12.65 feet CRD is 318 cubic yards with an average dredging depth of 3.3 feet. The prism edge on the shore-side is 71 feet in length and the average depth is 8 feet. Using a conservative factor of a 1:1 slope this is an additional 28 CY for a 348 cubic yards. The sloughing, given site conditions, is expected to more significant (1:3 or greater) and sediment on the riprap is expected to slough (rip rap area is 943 square feet). The total dredging volume is estimated at 450 cubic yards.
The surface area (planar) of the dredged area is 2545 square feet and the sand cap is expected to be 94 cubic yards of sand, or 132 tons.
PROJECT NOTESPrism
Prism
Prism
Rip Rap
Rip Rap
Rip Rap
1:1
1:1
1:1 Rip Rap
Expected Slough
Transect Lines locations presented on Previous Sheet See Sheet 7 for Locations
Approved By: MMB
Date: 10/27/16
Marine Industrial Construction, LLC 10500 SW Wilsonville Rd
Wilsonville, OR, 97070
(503) 682-2525
Sheet Contents:
Post Dredge Prism with Debris
Sheet Number: 8 of 12 Project Number: 2016-109
HSCG88-16-C-PQQ197
US Coast Guard
MSU Swan Island
Dredging Project 2016
A B
C D
Concrete Anchor
E F Empty Barrel
Post Dredge Prism with Debris Features which were not able to be removed with Environmental Bucket (Cable Arm) where identified using WinOPS dredging software, Trimble Geo 7 GPS and field maps.
Features were annotated (map to side) and used to navigate to and remove with standard ESCO digging clamshell bucket (See images below and locations on the map).
PROJECT NOTES
A pre-dredging surveys was completed on 10/4/16, a post dredging survey on 10/12/16, and a sand cover survey on 10/13/2016.
All bathymetric data was collected in accordance with the U.S Army Corp of Engineers Hydrographic Survey Manual EM-112-02-1003 (November 2013), Survey Classification: Navigation and Dredging Support Surveys, Bottom Classification of Soft.
HYDROGRAPHIC SURVEYS
Approved By: MMB
Date: 10/27/16
Marine Industrial Construction, LLC 10500 SW Wilsonville Rd
Wilsonville, OR, 97070
(503) 682-2525
Sheet Contents:
Post Sand Cover Prism & Transects
Sheet Number: 9 of 12 Project Number: 2016-109
HSCG88-16-C-PQQ197
US Coast Guard
MSU Swan Island
Dredging Project 2016
Post Sand Cover Prism Transects and Volumes Measurements
Sand cover volumes were based on the dredging area covered and a 1 foot cover. The area was 1975 square feet was 73 cubic yards. Dredging software had 33 bucket prints marking area for sand cover placement with an average of
2.5 c.y per bucket for 82.5 cy of sand (visually conformed that 20 cy were remaining in barge after placement [and confirmed with displacement records]).
PROJECT NOTES
Pre Dredge
Post Dredge
Sand Cover
Pre Dredge
Post Dredge
Sand CoverRip Rap
Debris
Debris 1 Foot Sand Cover
1 Foot Sand Cover
A pre-dredging surveys was completed on 10/4/16, a post dredging survey on 10/12/16, and a sand cover survey on 10/13/2016.
All bathymetric data was collected in accordance with the U.S Army Corp of Engineers Hydrographic Survey Manual EM-112-02-1003 (November 2013), Survey Classification: Navigation and Dredging Support Surveys, Bottom Classification of Soft.
HYDROGRAPHIC SURVEYS
Approved By: MMB
Date: 10/27/16
Marine Industrial Construction, LLC 10500 SW Wilsonville Rd
Wilsonville, OR, 97070
(503) 682-2525
Sheet Contents:
Final Dredge Prism Annotated
Sheet Number: 10 of 12 Project Number: 2016-109
HSCG88-16-C-PQQ197
US Coast Guard
MSU Swan Island
Dredging Project 2016
Final Dredge Prism with Annotated Details Prism Outline
Flat (<15)
Moderate Slopes (15-25)
Steep Slopes (25-40)
Extremely Steep (>40)
Main Dock
Slopes after Dredging with Slough Areas
CY Removed
0.25
0.5
Bucket Density / CY
Low
Moderate
High
Prism Outline
Main Dock
Bucket / CY Densities
Approved By: MMB
Date: 10/27/16
Marine Industrial Construction, LLC 10500 SW Wilsonville Rd
Wilsonville, OR, 97070
(503) 682-2525
Sheet Contents:
Final Transects
Sheet Number: 11 of 12 Project Number: 2016-109
HSCG88-16-C-PQQ197
US Coast Guard
MSU Swan Island
Dredging Project 2016
Final Dredge Prism with Transects
Outside Prism Sloughing Area
Final dredging prism transects compiled from surfaces generated from post sand cover placement. It is expected that minor sloughing will occur at the edges of the prism where large angles of repose are present.
PROJECT NOTES
Approved By: MMB
Date: 10/27/16
Marine Industrial Construction, LLC 10500 SW Wilsonville Rd
Wilsonville, OR, 97070
(503) 682-2525
Sheet Contents:
WinOPS Time Series
Sheet Number: 12 of 12 Project Number: 2016-109
HSCG88-16-C-PQQ197
US Coast Guard
MSU Swan Island
Dredging Project 2016
Dredging Software (WinOPS) Bucket Prints Over Time During Dredging 10/10/2016 16:32 to 19:32 - Cycle time: 2.02 Min10/10/2016 12:19 to 14:09 - Cycle time: 2.20 Min 10/10/2016 14:09 to 16:01 - Cycle time: 2.24 Min 10/10/2016 16:01 to 18:32 - Cycle time: 3.02 Min
10/11/2016 7:00 to 8:35 - Cycle time: 1.90 Min 10/11/2016 8:35 to 10:40 - Cycle time: 2.50 Min 10/11/2016 12:05 to 13:50 - Cycle time: 2.10 Min10/11/2016 10:40 to 12:05 - Cycle time: 1.70 Min
10/11/2016 13:50 to 15:17 - Cycle time: 1.74 Min 10/11/2016 15:17 to 16:55 - Cycle time: 1.96 Min 10/11/2016 16:55 to 19:33 - Cycle time: 3.16 Min 10/11/2016 19:33 to 20:19-Cycle time: 0.92 Probe
The dredge operator sees on the computer screen the locations of the bucket with the all edges of the bucket visible.
Bucket Marks are only logged when the operator finds depths below the target depth noted in the software (i.e. Design depth – current tide).
Operator GIS data include:
- Prism Outline
- Pre-Dredge
Hydrographic Survey
- Docks & Shoreline features
- Dredge outline and orientation (with crane and bucket / boom location)
- Annotated features including expected rip rap areas
WinOPS NOTES
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