4- SandyRiverLaneFM_Temporary Protective Measures_AsBuilt.pdf

PDF 2 MB Posted Oct 29, 2026

Attached to: RFP 2026-80 Sandy River Force Main River Crossing Project â?? Progressive Design-Build
Solicitation number: S-C01010-00018309
Issued by: Oregon

About this file

Written by GovTribe AI · Nov 3, 2026

This document is an as-built record drawing for the Sandy River Lane Force Main Emergency Temporary Pipe Protection project located in Clackamas County, Oregon, near Portland. The project involves the installation of temporary protective measures for exposed water pipes crossing the Sandy River, a tributary of the Columbia River. The work includes the construction of two boulder barbs designed to protect the exposed force main pipes from erosion and river scour. The project was designed by Interfluve Engineering, with Michael McAllister, PE, serving as the Engineer of Record. The as-built drawings were certified on September 24, 2026, documenting the work as constructed to meet all performance standards of the design.

The construction scope includes the installation of approximately 125 cubic yards of boulders and 130 cubic yards of cobble fill, with material quantities reflecting work within the ordinary high water area totaling 1,864 square feet of combined cobble and boulder fill. A bulk bag cofferdam measuring 98 feet in length was used to isolate the construction site from the waterway during installation. All work complies with Oregon Department of Forestry in-water work period requirements and applicable permits from the Department of State Lands and Oregon Department of Fish and Wildlife. The contractor was responsible for erosion control, utility location, fish rescue coordination, archaeological discovery protocols, and site restoration, with all non-native materials disposed of off-site and native materials retained on-site. The project required coordination with the owner's representative for construction staking, pre-construction meetings, and adherence to ODOT and local standards, with all disturbed areas restored to original condition or better upon project completion.

View the file

Other files

File	Type	Posted
2- Design-Build-General Conditions.pdf	PDF	Oct 29, 2026
3- Sandy River lane Force Main Asbuilt Drawings.pdf	PDF	Oct 29, 2026
1 EJCDC Progressive Design Build Agreement.docx	DOCX document	Oct 29, 2026
3- PDB-Supplementary Conditions-Sandy River FM_Clean.docx	DOCX document	Oct 29, 2026
2-2013 Sandy River Lane PS and Vulnerability Mit. app D.pdf	PDF	Oct 29, 2026
1- Sandy River Lane Force Main Vulnerability Mitigation TM 9_25_2013.pdf	PDF	Oct 29, 2026
RFP 2026-80 Sandy River Force Main River Crossing Project Progressive Design-Build.pdf	PDF	Oct 29, 2026

On GovTribe

Work with this file

Download the original file
Contacts named in this file
Similar government files
Ask GovTribe AI about this file

Try for free Login

Text version

The file's text, extracted by GovTribe without its formatting.

PORTLAND

OREGON

SANDY RIVER LANE FORCE MAIN

EMERGENCY TEMPORARY PIPE PROTECTION

AS-BUILT 2026

DATEBYNO. REVISION DESCRIPTION

SHEET

PROJECT

CHECKED

APPROVED

DRAWN

DATE

DESIGNED

G :\Q

-T \S an dy

R iv er Fo rc eM ai nC la ck am as

C ou nt y_

\D ra w in gs

\R ef er en ce s\

C iv il 3D

\S an dy

_E G

.d w g

- m ik e m

JULY 2026

CLACKAMAS WES

SANDY RIVER LANE FORCE MAIN

EMERGENCY TEMPORARY PIPE PROTECTION

TITLE SHEET, LOCATION MAPS 1 5

PORTLAND

GRESHAM

SANDY

COORDINATES:

LATITUDE 45°21'57.20"N

LONGITUDE 121°59'55.99"W

WATERBODY: SANDY RIVER

TRIBUTARY OF: COLUMBIA RIVER

VICINITY MAP MILES

SITE MAP

EAST BRIGHTW

OOD LOOP ROAD

EAST W

ILD

FER

LAN

EAST RIVERSIDE DRIVE

MT HOOD HIGHWAY

SANDY RIVER

PROJECT

LOCATION

FEET

0 500

BRIGHTWOOD

DRAWINGS

1 TITLE SHEET, LOCATION MAPS

2 NOTES

3 SITE OVERVIEW

4 PIPE PROTECTION - BOULDER BARBS

5 DETAILS

501 Portway Avenue, Suite 101 Hood River, OR 97031

541.386.9003 www.interfluve.com

RECORD DRAWING CERTIFICATION

THESE DRAWINGS REFLECT THE WORK AS CONSTRUCTED

AND ALL MODIFICATIONS MEET THE PERFORMANCE

STANDARDS OF THE DESIGN.

ENGINEER OF RECORD: MICHAEL MCALLISTER, PE 64452

SEPTEMBER 24, 2026

DATEBYNO. REVISION DESCRIPTION

SHEET

PROJECT

CHECKED

APPROVED

DRAWN

DATE

DESIGNED

G :\Q

-T \S an dy

R iv er Fo rc eM ai nC la ck am as

C ou nt y_

\D ra w in gs

\R ef er en ce s\

C iv il 3D

\S an dy

_E G

.d w g

- m ik e m

EMERGENCY TEMPORARY PIPE PROTECTION

NOTES 2 5

501 Portway Avenue, Suite 101 Hood River, OR 97031

541.386.9003 www.interfluve.com

THE CONTRACTOR SHALL ATTEND A PRE-CONSTRUCTION MEETING

WITH OWNER AND OWNER'S REPRESENTATIVE PRIOR TO

MOBILIZING TO SITE AND BEGINNING CONSTRUCTION.

ALL WORK SHALL CONFORM TO THE CURRENT EDITIONS OF

STANDARD PLANS AND SPECIFICATIONS OF THE OREGON STATE

DEPARTMENT OF TRANSPORTATION (ODOT) AND LOCAL

STANDARDS UNLESS INDICATED OTHERWISE BY THE CONTRACT

DOCUMENTS. IN CASE OF A CONFLICT BETWEEN THE REGULATORY

STANDARDS OR SPECIFICATIONS, THE MORE STRINGENT WILL

PREVAIL.

ODFW IN-WATER WORK PERIODS

IN-WATER WORK SHALL OCCUR DURING THE ODFW PERMITTED

IN-WATER WORK PERIOD STATED IN THE DSL PERMIT, UNLESS

OTHERWISE COORDINATED WITH ODFW AND APPROVED IN WRITING

BY DSL.

EXISTING DATA

EXISTING TOPOGRAPHY DATA CONSIST OF LIDAR COLLECTED IN

2024. SUPPLEMENTAL TOPOGRAPHY DATA WERE COLLECTED BY

INTER-FLUVE IN 2026. GIS LANDOWNERSHIP DATA WERE PROVIDED

BY CLACKAMAS COUNTY.

SOILS

SURFACE SOILS ARE ASSUMED TO BE SANDY RIVER ALLUVIUM AND

MUDFLOW. NO SUBSURFACE SOIL INVESTIGATIONS WERE

COMPLETED AS PART OF THIS DESIGN.

UTILITIES

THE CONTRACTOR SHALL BE SOLELY RESPONSIBLE FOR HAVING

UTILITIES LOCATED PRIOR TO BEGINNING ANY

GROUND-DISTURBING CONSTRUCTION ACTIVITIES.

THE CONTRACTOR SHALL CALL (800-332-2344) FOR UTILITY LOCATE

PRIOR TO CONSTRUCTION.

THE CONTRACTOR SHALL IMMEDIATELY CONTACT THE AFFECTED

UTILITY SERVICE TO REPORT ANY DAMAGED OR DESTROYED

UTILITIES.

THE CONTRACTOR SHALL PROVIDE EQUIPMENT AND LABOR TO AID

THE AFFECTED UTILITY SERVICE IN REPAIRING DAMAGED OR

DESTROYED UTILITIES AT NO ADDITIONAL COST TO OWNER.

FIRE PROTECTION REQUIREMENTS

DURING THE CLOSED FIRE SEASON, CONTRACTOR COMPLETING

WORK TASKS UNDER THIS CONTRACT SHALL ADHERE TO ALL

OREGON FOREST LAW (ORS) AND OREGON ADMINISTRATIVE RULES

(OAR) FOR FIRE PROTECTION. IN THE EVENT A FIRE WATCH IS

REQUIRED, CONTRACTOR SHALL BE LIMITED TO INVOICING FOR

ONE PERSON AT AN HOURLY LABOR RATE FOR THE HOURS

REQUIRED FOR THE FIRE WATCH. IF A FIRE OCCURS, THE

CONTRACTOR SHALL PROMPTLY REPORT THE FIRE TO 911.

FISH, LAMPREY, & MUSSEL RESCUE

THE OWNER WILL COORDINATE ANY REQUIRED FISH, LAMPREY, &

MUSSEL RESCUE. ALL FISH RESCUE EFFORTS SHALL COMPLY WITH

APPLICABLE REGULATORY STANDARDS AND PERMITS.

CONSTRUCTION MATERIALS

THE CONTRACTOR SHALL DISPOSE OF NON-NATIVE MATERIAL

ENCOUNTERED IN AN APPROVED, LEGAL OFFSITE DISPOSAL

FACILITY AT NO ADDITIONAL COST TO THE OWNER. ALL NATIVE

MATERIALS SHALL BE PLACED ON SITE IN ACCORDANCE WITH

THESE DRAWINGS.

EROSION CONTROL

CONTRACTOR SHALL BE SOLELY RESPONSIBLE FOR PROVIDING

AND MAINTAINING ALL NECESSARY EROSION CONTROL FACILITIES

AND COMPLY WITH APPLICABLE EROSION CONTROL REGULATIONS,

AND PERMIT CONDITIONS.

CONSTRUCTION STAKING

CONTRACTOR SHALL MEET WITH THE OWNER'S REPRESENTATIVE

TO DEFINE AND MARK LIMITS OF DISTURBANCE PRIOR TO

MOBILIZATION OF EQUIPMENT OR MATERIALS ONTO THE SITE.

OWNER'S REPRESENTATIVE WILL PROVIDE STAKING OR MARKING

OF PROJECT LIMITS AND ELEVATION CONTROL POINTS. SOME FIELD

ADJUSTMENTS TO LINES AND GRADES ARE TO BE EXPECTED. THE

CONTRACTOR SHALL REPLACE DAMAGED OR DESTROYED

CONSTRUCTION STAKES AT NO ADDITIONAL COST TO THE OWNER.

TRAFFIC CONTROL

THE CONTRACTOR IS SOLELY RESPONSIBLE FOR OBTAINING ANY

REQUIRED TRAFFIC CONTROL OR ACCESS PERMITS AND FOR

PROVIDING TRAFFIC CONTROL IN ACCORDANCE WITH ALL COUNTY

OR STATE DOT SPECIFICATIONS.

CONSTRUCTION ACCESS

ALL SAPLINGS AND TREES TO BE TRANSPLANTED OR REMOVED

SHALL BE CLEARLY MARKED AND APPROVED BY OWNER. ALL

EQUIPMENT, MATERIALS, AND PERSONNEL SHALL REMAIN WITHIN

THE LIMITS OF DISTURBANCE UNLESS OTHERWISE APPROVED BY

OWNER.

THE CONTRACTOR SHALL KEEP THE WORK AREAS IN A NEAT

CONDITION, FREE OF DEBRIS AND LITTER FOR THE DURATION OF

THE PROJECT.

ALL DISTURBED AREAS INCLUDING ROADS, DRIVEWAYS AND

ACCESS ROUTES SHALL BE RESTORED TO ORIGINAL CONDITION OR

BETTER UNLESS OTHERWISE INDICATED IN DRAWINGS, AT NO

ADDITIONAL COST TO THE OWNER.

ARCHEOLOGICAL DISCOVERIES

CONTRACTOR IS RESPONSIBLE FOR ADHERING TO AN

INADVERTENT DISCOVERY PLAN. OWNER, OWNER'S

REPRESENTATIVE, OR QUALIFIED ARCHEOLOGIST MAY HALT OR

DELAY EXCAVATION WORK TO COMPLY WITH CONDITIONS OF

ARCHEOLOGICAL INADVERTENT DISCOVERY AND MONITORING

PLAN.

WETLANDS AND WATERBODIES

THE ORDINARY HIGH WATER (OHW) LINES DEPICTED ON THESE

DRAWINGS ARE BASED ON A COMBINATION OF HYDRAULIC MODEL

RESULTS, FIELD OBSERVATIONS, AND PROFESSIONAL JUDGEMENT.

TURBIDITY MONITORING WILL BE PROVIDED BY THE OWNER.

SECTION

BULK BAG NOTES:

1. BULK BAG COFFERDAM SHALL BE CONSTRUCTED OF SEVERAL UNITS OF BULK BAGS FILLED WITH WASHED COBBLE, AND ABUTTED SIDE BY SIDE TO

CREATE A ROW THAT ISOLATES THE CONSTRUCTION SITE.

2. BULK BAG COFFERDAM SHALL BE SEALED BY COVERING THE COFFERDAM WITH PLASTIC SHEETING HELD IN PLACE BY STANDARD SANDBAGS

PLACED IN ROWS ON TOP OF COFFERDAM, AND AT TOE OF COFFERDAM.

3. THE PLASTIC SHEETING SHALL BE DRAPED ALONG THE CHANNEL BOTTOM ON BOTH SIDES OF THE COFFERDAM WITH OUTWARD EDGE OF SHEETING MINIMUM 4-FEET FROM TOE OF COFFERDAM. THE DRAPED PORTION OF PLASTIC SHEETING SHALL BE PINNED TO THE CHANNEL BED BY MINIMUM TWO ROWS OF STANDARD SANDBAGS. ALL SANDBAGS SHALL BE FILLED WITH WASHED PEA GRAVEL.

4. THE CONSTRUCTION SIDE EDGE OF PLASTIC SHEETING SHALL BE TOED INTO THE CHANNEL BED MINIMUM 1-FT. TOEING IN THE OUTWARD EDGE OF PLASTIC SHEETING SHALL OCCUR AFTER THE COFFERDAM IS CLOSED TO PREVENT TURBIDITY RELEASE TO THE WATERWAY.

5. IF POSSIBLE, THE COFFERDAM SHALL BE EXTENDED ONTO A GRAVEL BAR AND OUT OF THE WATER. IF THE COFFERDAM MUST BE TERMINATED AT THE RIVER BANK, THE TERMINAL END OF THE COFFERDAM, WHERE IT CONNECTS TO CHANNEL BANK OR HIGH GROUND, SHALL BE SEALED TO THE GROUND WITH PLASTIC SHEETING AND STANDARD SANDBAGS. MULTIPLE LAYERS OF PLASTIC SHEETING AND SANDBAGS MAY BE REQUIRED TO

FORM A WATERTIGHT SEAL.

6. BULK BAGS SHALL BE CUBE-SHAPED POLYPROPYLENE WOVEN FABRIC BAGS WITH FULLY OPEN TOP, FLAT BOTTOM, FOUR LOOPS, MINIMUM 2-TON

WEIGHT CAPACITY, MINIMUM 5:1 SAFETY FACTOR.

7. PLASTIC SHEETING SHALL BE MINIMUM 6-MIL THICKNESS. ROLL LENGTH SHALL BE LONG ENOUGH TO ENSURE THAT ENTIRE LENGTH OF COFFERDAM WILL BE COVERED WITHOUT A SEAM. MINIMUM 12-FT WIDE ROLL SHALL BE USED FOR SINGLE LAYER BULK BAG COFFERDAM. MINIMUM 16-FT WIDE

ROLL SHALL BE USED FOR 2-LAYER STACKED BULK BAG COFFERDAM.

8. CONTRACTOR SHALL PROVIDE PUMPING SUFFICIENT FOR A NET INFLOW OF WATER TO THE AREA ENCLOSED BY THE COFFERDAM, AND DISCHARGE

TURBID WATER TO UPLAND FLOODPLAIN.

9. BULK BAG COFFERDAM SHALL BE COMPLETELY REMOVED AFTER CONSTRUCTION IS COMPLETED AND TURBIDITY HAS BEEN REMOVED. BULK BAG FILL (WASHED COBBLE) AND SANDBAG FILL (WASHED PEA GRAVEL) SHALL BE DISPOSED OF ON SITE. BAGS SHALL BE REMOVED FROM THE SITE

ONCE CONSTRUCTION IS COMPLETED.

10. MEASUREMENT AND PAYMENT FOR BULK BAG COFFERDAM, SAND BAGS, PLASTIC SHEETING, WASHED COBBLE PLACEMENT, MAINTENANCE AND REMOVAL OF ALL MATERIALS SHALL BE INCIDENTAL TO THE LUMP SUM ALL INCLUSIVE COST FOR DIVERSION AND DEWATERING.

11. ALTERNATE COFFERDAM MATERIALS AND CONFIGURATIONS MAY BE ALLOWED BUT SHALL NOT BE IMPLEMENTED WITHOUT REVIEW AND APPROVAL BY THE OWNER'S REPRESENTATIVE. CONTRACTOR SHALL PROVIDE SHOP DRAWINGS AND/OR VENDOR CUT SHEETS FOR SUBSTITUTIONS.

WASHED

COBBLE

RIVER SIDE

KEY IN PLASTIC

SHEETING 1'

MIN

PLASTIC SHEETING

CONSTRUCTION

SIDE

SAND BAG

BULK BAG

PUMP FROM

IMPOUNDED AREA

IF NECESSARY

BULK BAG COFFERDAM

NOT TO SCALE

O H

HW O

H W

OHW

OHW O

OHW

OHWOHW

OHW

OHW OHW OHW

OHW

O H

W O

H W

OHW

O H

OHW

OHWOHW

OHW

O H

OHW

O H

OHW

O H

W O

H W

OHW

HW OHW

OHW

O H

HW O

H W

OHW

OHW O

OHW

OHWOHW

OHW

OHWOHW

OHW

OHWOHWOHW

OHW

OHWOHW

OHW

O H

OHW

O H

W O

H W

OHW

O H

OHW

OHWOHW O

OHW

O H

OHW

O H

OHW

O H

W O

OHW

O H

OHW

O H

OHW

O H

OHW

O H

W OHW

OHW

O H

OHW

O H

OHWOHW

O H

OHW OHW

OHW

O H

W O H

OHW

OHW OHW

OHW

OHW OHW

DATEBYNO. REVISION DESCRIPTION

SHEET

PROJECT

CHECKED

APPROVED

DRAWN

DATE

DESIGNED

G :\Q

-T \S an dy

R iv er Fo rc eM ai nC la ck am as

C ou nt y_

\D ra w in gs

\R ef er en ce s\

C iv il 3D

\S an dy

_E G

.d w g

- m ik e m

EMERGENCY TEMPORARY PIPE PROTECTION

SITE OVERVIEW 3 5

501 Portway Avenue, Suite 101 Hood River, OR 97031

541.386.9003 www.interfluve.com

FLOW

SCALE IN

FEET

0 200100

PLAN VIEW - SITE OVERVIEW

ROAD

PROJECT SITE

SANDY RIVER

LEGEND

EXISTING GROUND CONTOUR, 1 FT

ORDINARY HIGH WATEROHW

LIMITS OF DISTURBANCE

100-YR FLOODPLAIN

01558273 00725139

PER

TY LIN

EAST BRIGHTW

OOD LOOP ROAD

EAST RIVERSIDE DRIVE

2024 RIVER BANK

PARCEL LINES

PIPES

OHW

O H

OHW

O H

OHW

O H

OHW

O H

OHW

O H

OHW

O H

OHW

O H

OHW

O H

OHW

O H

OHW

O H

OHW

O H

OHW

O H

OHW

O H

OHW

O H

OHW

O H

OHW

O H

OHW

O H

OHW

O H

OHW

O H

OHW

OHWO

O H

OHW

1145 1144

0+00 0+10 0+20 0+30 0+400+41

0+00 0+10 0+20 0+30 0+400+43

0+00 0+10 0+20 0+30 0+400+40

STA:0+15

ELEV:1148.0 STA:0+28

ELEV:1145.0

STA:0+15

ELEV:1147.9

STA:0+27

ELEV:1145.0

OHW OHW OHW OHW

OHW OHW OHW OHW OHW

25 FT

21 FT

DATEBYNO. REVISION DESCRIPTION

SHEET

PROJECT

CHECKED

APPROVED

DRAWN

DATE

DESIGNED

G :\Q

-T \S an dy

R iv er Fo rc eM ai nC la ck am as

C ou nt y_

\D ra w in gs

\R ef er en ce s\

C iv il 3D

\S an dy

_E G

.d w g

- m ik e m

7/24/26

MM LOWER COLUMBIA FISH ENHANCEMENT GROUP

MULLHOLLAND CREEK RESTORATION

60% DESIGN DRAWINGS

PIPE PROTECTION -

BOULDER BARBS 4 13

501 Portway Avenue, Suite 101

Hood River, OR 97031 541.386.9003 www.interfluve.com

FLOW

SCALE IN

FEET

0 4020

PLAN VIEW - BARBS

ROAD

CROSS SECTION4

1 DOWNSTREAM BARB

CROSS SECTION4

2 BETWEEN BARBS

CROSS SECTION4

3 UPSTREAM BARB

DOWNSTREAM BARB

(BOULDERS)

UPSTREAM BARB

(BOULDERS)

COBBLE FILL

SAN. SEWER

KEY BOULDERS INTO BANK 4 FT

BACKFILL WITH COBBLE

KEY BOULDERS INTO BANK 4 FT

BACKFILL WITH COBBLE

MATERIAL QUANTITY VOLUME WITHIN OHW AREA WITHIN OHW

COFFERDAM

SANDY RIVER

BOULDERS 125 CY 90 CY 990 SQ FT

COBBLE 130 CY 110 CY 720 SQ FT

COFFERDAM 98 FT

CONSTRUCTION QUANTITIES AND JURISDICTIONAL IMPACTS

LEGEND

EXISTING GROUND CONTOUR, 1 FT

DESIGN CONTOUR, 1 FT

ORDINARY HIGH WATEROHW

LIMITS OF DISTURBANCE

COFFERDAM

EXISTING CONIFER TREEBOULDERS

COBBLE

EXPOSED PIPES

01558273 00725139

PER

TY LIN

WATER PIPE

2024 RIVER BANK

2024 TOP OF BANK

2024 TOE OF BANK

2024 RIVER BANK

EXISTING DECIDUOUS TREE

SEE SHEET 5 FOR ADDITIONAL DETAILS

SEE SHEET 5 FOR RECOMMENDED SEQUENCE

EXPOSED PIPES

AS-BUILT EXTENTS OF BARB FILL

AS-BUILT CONTOUR, 1 FT

AS-BUILT BARB

AS-BUILT COBBLE

AS-BUILT BARB

AS-BUILT COMBINED COBBLE AND BOULDER FILL WITHIN OHW = 1,864 SQ FT

# PHOTO POINT

Alexandra Danielsen Oval

DATEBYNO. REVISION DESCRIPTION

SHEET

PROJECT

CHECKED

APPROVED

DRAWN

DATE

DESIGNED

G :\Q

-T \S an dy

R iv er Fo rc eM ai nC la ck am as

C ou nt y_

\D ra w in gs

\R ef er en ce s\

C iv il 3D

\S an dy

_E G

.d w g

- m ik e m

EMERGENCY TEMPORARY PIPE PROTECTION

DETAILS 5 5

501 Portway Avenue, Suite 101 Hood River, OR 97031

541.386.9003 www.interfluve.com

FLOW

4-6 FT BOULDERS ON TIP AND UPSTREAM FACE ALONG OUTER 1/3

3-4 FT BOULDERS ON UPSTREAM SIDE LANDWARD OF TIP ROCKS

2-3 FT BOULDERS ON TOP AND DOWNSTREAM SIDE

BANK LINE

5 FT

2H:1V SIDE SLOPES

4 FT

FLOW

BANK LINE

60°

3-4 FT BOULDERS

FLOW

2-3 FT BOULDERS

COBBLE FILL

PIPES

CROSS SECTION5

1 TYPICAL FILL ZONES TYPICAL PLAN VIEW

PIPES

RECOMMENDED SEQUENCE

1. ACCESS SITE, INSTALL EROSION AND SEDIMENT

CONTROL PLAN, AND PROTECT TREES AND OTHER

EXISTING VEGETATION,AS PER 1200CAINSTALL

COFFERDAM TO ISOLATE IN-STREAM WORK FROM

THE WATERWAY.

2. COORDINATE WITH OWNER'S REPRESENTATIVE TO

DE-FISH ISOLATED WORK AREA, FOLLOWING

PERMITTING GUIDELINES.

3. WORKING FROM THE EDGE OF THE BANK, INSTALL

TIP BOULDERS.

4. EXCAVATE KEY TRENCH.

5. INSTALL LARGE BODY BOULDERS ALONG

UPSTREAM FACE.

6. INSTALL COBBLE FILL AROUND PIPES TO PROVIDE

PROTECTION DURING BOULDER PLACEMENT.

7. INSTALL BODY BOULDERS TO FORM TOP AND

DOWNSTREAM FACE. TAKE CARE TO NOT CONTACT

PIPES WITH BOULDERS OR EQUIPMENT.

8. REPEAT FOR SECOND BARB.

9. FILL BETWEEN BARBS USING 8" MINUS COBBLE FILL.

10. RESTORE WORK, ACCESS, AND STAGING AREAS BY

REMOVING COFFERDAM, DECOMPACTING SOILS

AND REGRADING TO ORIGINAL CONDITION. APPLY

SEED MIX AND SPREAD CERTIFIED WEED-FREE

MULCH ON ALL BARE GROUND PRIOR TO

DEMOBILIZING.

COFFERDAM

KEY BARB INTO BANK

5 FT

VARIES

* DENSITY OF STONE SHALL BE GREATER THAN 165 PCF

** VOLUMES AND PERCENTAGE RATIOS ARE APPROXIMATE

PROFILE - BANK TO TIP5

2 TYPICAL FILL ZONES

4 FT

COBBLE FILL

3-4 FT BOULDERS

2-3 FT BOULDERS

AutoCAD SHX Text

AS PER 1200CA. INSTALL

File details come from the government source that posted it. Updated Nov 3, 2026.