A06_-_Middle_Dike_Enhancement_Plan_-_Ducks_Unlimited.pdf

PDF 7 MB Posted Jul 15, 2025

Attached to: IA UNION SLOUGH NWR - Supplies for Water Control
Solicitation number: 140FS225Q0150
Issued by: Department of the Interior Fish and Wildlife Service

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Written by GovTribe AI · Jul 15, 2025

This document is a detailed engineering design plan for the Middle Dike Enhancement Project at Union Slough National Wildlife Refuge in Kossuth County, Iowa, prepared by Ducks Unlimited in cooperation with the U.S. Fish and Wildlife Service. The project involves replacing an existing water control structure with a new 6' x 4' precast reinforced concrete box culvert system, including two Type 1 end sections with stoplog channels, grating platforms, and associated infrastructure. Key construction elements include excavation, embankment construction, levee repair across multiple stations, sheet pile installation, riprap placement, and aggregate surfacing.

The project specifications outline comprehensive requirements for the contractor, including mobilization, site preparation, cofferdam placement and removal, excavation, embankment construction, structure appurtenances, culvert installation, and erosion control. The estimated quantities include 388 cubic yards of excavation, 335 cubic yards of embankment construction, 440 linear feet of levee repair, 70 tons of Iowa DOT Class E riprap, and 50 tons of aggregate surface course. Environmental considerations are emphasized, with specific guidelines for protecting threatened/endangered species, particularly bats, and requirements for tree removal between October 1st and March 31st to minimize ecological impact.

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PROJECT LOCATION

UNION SLOUGH NWR -

MIDDLE DIKE

ENHANCEMENT

SECTION 35, TOWNSHIP 98 W N, RANGE 28W

KOSSUTH COUNTY, IOWA

IN COOPERATION WITH

UNITED STATES FISH AND WILDLIFE SERVICE

PROJECT LOCATION

Know what's below.

Call before you dig.

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PROJECT LOCATION MAP

SCALE: 1" = 5000'

AFFIX SEAL: DUCKS UNLIMITED, INC.

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CAD FILE:

DRAWN BY:

SURVEYED BY:

BIOLOGIST:

DATE:

PROJECT NUMBER:

R ev is io ns D at e

B y

R ev is io n S he et

04/30/2025

AS & CK

IA-368-1 COVER & SPECS

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US-IA-368-1

IOWA

SHEET INDEX

SHEET CONTENTS

1 COVER SHEET

2 SPECIFICATIONS, QUANTITIES, & NOTES

3 TOPOGRAPHY & EXISTING CONDITIONS

4 SITE PLAN OVERVIEW

5 STRUCTURE PLAN

6 STRUCTURE PROFILE

7 STRUCTURE DETAILS - 1

8 STRUCTURE DETAILS - 2

9 STRUCTURE DETAILS - 3

10 STRUCTURE DETAILS - 4

11 GENERAL DETAILS - 1

I hereby certify that this engineering document was prepared by me or under my direct personal supervision and that I am a duly licensed Professional Engineer under the laws of the State of Iowa.

Andrew Schippers, P.E. Date

My license number is P26317 My license renewal date is December 31, 2025 Pages of sheets covered by this seal: 1 - 11

TITONKA, IA

BANCROFT, IA

UTILITIES NOTE:

BEFORE THE START OF CONSTRUCTION, THE OWNER OF

ANY UTILITIES INVOLVED MUST BE NOTIFIED. THE

EXCAVATOR/CONTRACTOR IS RESPONSIBLE FOR GIVING

THIS NOTICE BY CALLING "IOWA ONE CALL" AT (800) 292-8989

AT LEAST 48 HOURS PRIOR TO ANY EXCAVATION.

TICKET #:

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EMMET

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KOSSUTH

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CHEROKEE

CONSTRUCTION NOTES:

1. BID ITEM FOR MOBILIZATION/DEMOBILIZATION SHALL INCLUDE THE SUPPLY OF ALL LABOR, MATERIAL AND

EQUIPMENT NECESSARY TO TRANSPORT ALL NEEDED LABOR, MATERIAL, AND EQUIPMENT, TO AND FROM THE PROJECT SITE, TO SUCCESSFULLY COMPLETE THAT PROJECT AS SHOWN ON THE PLANS. ANY ADDITIONAL MOBILIZATIONS OF LABOR, EQUIPMENT, OR MATERIALS REQUIRED TO COMPLETE THE

PROJECT WILL BE PROVIDED BY THE CONTRACTOR AT NO ADDITIONAL EXPENSE.

2. BID ITEM FOR SITE PREPARATION SHALL INCLUDE THE SUPPLY OF ALL LABOR, MATERIAL, AND EQUIPMENT TO PREPARE ALL CONSTRUCTION AREAS BY STRIPPING AND STOCKPILING TOPSOIL. GRUBBING/REMOVAL OF BRUSH AND TREES IS CONSIDERED INCIDENTAL TO BID ITEM SITE PREPARATION. THE REMOVAL AND STOCK PILING OF EXISTING RIPRAP IN CONSTRUCTION AREAS SHALL BE CONSIDERED INCIDENTAL TO BID ITEM SITE PREPARATION. STOCKPILED TOPSOIL SHALL BE SPREAD OVER CONSTRUCTED AREAS AND LEVELED/PREPARED FOR SEEDING AND MULCHING. STOCKPILED RIPRAP SHALL BE REINSTALLED ON

CONSTRUCTED EMBANKMENT AREAS.

3. BID ITEM FOR SITE PREPARATION - COFFERDAM PLACEMENT AND REMOVAL SHALL INCLUDE THE SUPPLY OF ALL LABOR, MATERIAL, AND EQUIPMENT NEEDED TO PROVIDE A COFFERDAM FOR THE PROPOSED CONSTRUCTION SITE AND REMOVE COFFERDAM AFTER CONSTRUCTION COMPLETION. DEWATERING OF CONSTRUCTION SITE AND MAINTENANCE OF COFFERDAM FOR DURATION OF PROJECT IS CONSIDERED INCIDENTAL TO THIS BID ITEM. COFFERDAM SHALL BE SHEET PILING, OR EARTHEN, AS NECESSARY, TO ACCOMPLISH THE WORK. NO ADDITIONAL PAYMENTS WILL BE MADE FOR ADDITIONAL DEWATERING

EFFORTS REQUIRED TO FINISH THE PROJECT.

4. BID ITEM FOR EXCAVATION SHALL INCLUDE THE SUPPLY OF ALL LABOR, MATERIAL, AND EQUIPMENT

NECESSARY TO EXCAVATE ALL REQUIRED EXCAVATIONS.

5. BID ITEM FOR EMBANKMENT CONSTRUCTION SHALL INCLUDE THE SUPPLY OF ALL LABOR, MATERIAL, AND EQUIPMENT REQUIRED TO HAUL, PLACE, AND COMPACT FILL MATERIAL TO CONSTRUCT EARTHWORK, AS SHOWN ON THE PLANS. ANY MATERIAL EITHER NEEDED OR REMAINING FROM THIS OPERATION SHALL BE

UTILIZED FROM THE DESIGNATED BORROW AREA.

6. BID ITEM FOR EMBANKMENT CONSTRUCTION - LEVEE REPAIR SHALL INCLUDE THE SUPPLY OF ALL LABOR, MATERIAL, AND EQUIPMENT REQUIRED TO REPAIR THE EXISTING LEVEE AS STAKED IN THE FIELD.

CONTRACTOR SHALL REMOVE AND STOCKPILE ANY EXISTING RIPRAP FOR REINSTALLATION AFTER REPAIRS ARE COMPLETE. THE SUPPLY OF ALL LABOR, MATERIAL, AND EQUIPMENT NECESSARY TO STOCKPILE AND REINSTALL EXISTING RIPRAP IS CONSIDERED INCIDENTAL TO BID ITEM EMBANKMENT CONSTRUCTION - LEVEE REPAIR. ANY EARTH MATERIAL EITHER NEEDED OR REMAINING FROM THIS OPERATION SHALL BE UTILIZED FROM THE DESIGNATED BORROW AREA AND IS CONSIDERED INCIDENTAL TO BID ITEM EMBANKMENT CONSTRUCTION - LEVEE REPAIR. THE SUPPLY OF ALL LABOR, MATERIAL, AND EQUIPMENT NECESSARY TO INSTALL PIT RUN COURSE GRAVEL ON SIDE SLOPES AFTER LEVEE REPAIRS ARE MADE AS SHOWN IN THE PLANS, IS CONSIDERED INCIDENTAL TO BID ITEM EMBANKMENT CONSTRUCTION - LEVEE REPAIR. BID ITEM IS A LINEAR FOOT MEASUREMENT. LOCATION AND EXTENT OF LEVEE REPAIR MAY BE MODIFIED IN FIELD, AS DETERMINED BY DUCKS UNLIMITED ENGINEER. CONTRACTOR SHALL NOTIFY

DUCKS UNLIMITED ENGINEER FOR STAKING OF AREAS REQUIRING REPAIR PRIOR TO WORK.

7. BID ITEM STRUCTURE APPURTENANCES - ALUMINUM STOPLOGS AND COMPONENTS SHALL INCLUDE THE SUPPLY OF ALL LABOR, MATERIAL, AND EQUIPMENT NECESSARY TO FABRICATE AND DELIVER STOPLOGS

AND STOPLOG ACCESSORIES, AS SHOWN IN THE PLANS.

8. BID ITEM PRECAST 6' X 4' REINFORCED BOX CULVERT & ACCESSORIES SHALL INCLUDE THE SUPPLY OF ALL LABOR, MATERIAL, AND EQUIPMENT NECESSARY TO PRECAST, TRANSPORT, AND INSTALL PRECAST BOX

CULVERT SECTIONS ACCORDING TO IOWA DOT STANDARDS AND AS SHOWN IN THE PLANS.

9. BID ITEM PRECAST REINFORCED CUSTOM TYPE 1 BOX CULVERT END SECTION SHALL INCLUDE THE SUPPLY OF ALL LABOR, MATERIAL, AND EQUIPMENT NECESSARY TO PRECAST, TRANSPORT, AND INSTALL PRECAST TYPE 1 BOX CULVERT END SECTIONS WITH STOPLOG CHANNELS. FABRICATION AND CUSTOM PRECAST OF

STOPLOG CHANNELS AND ALL CALLED OUT EMBEDS AS SHOWN IN THE PLANS ARE CONSIDERED

INCIDENTAL TO BID ITEM PRECAST REINFORCED CUSTOM TYPE 1 BOX CULVERT END SECTION. THE PURCHASE AND INSTALLATION OF A WATER LEVEL GAUGE IN EACH TYPE 1 END SECTION IS CONSIDERED INCIDENTAL TO BID ITEM PRECAST REINFORCED CUSTOM TYPE 1 BOX CULVERT END SECTION. WATER LEVEL GAUGE SHALL BE A SECO #99001 0' - 4' WATER LEVEL GAUGE OR ENGINEER APPROVED EQUAL.

10. BID ITEM FOR IA DOT CLASS E RIPRAP SHALL INCLUDE THE SUPPLY OF ALL LABOR, MATERIAL, AND EQUIPMENT NECESSARY TO PURCHASE, HAUL, AND PLACE BID ITEM AS SHOWN ON THE PLANS. NON WOVEN FILTER FABRIC IS REQUIRED BENEATH ALL ROCK/RIPRAP AND SHALL BE SECURED TO SLOPES AND BOTTOMS USING PINS AS NOTED IN SPECIFICATION 305. QUANTITY IS BASED ON TONS. CONTRACTOR SHALL PROVIDE SCALE TICKETS WITH WEIGHTS INCLUDING TARE WEIGHTS, GROSS WEIGHTS, AND NET

WEIGHTS MATERIAL DELIVERED.

11. BID ITEM FOR CRUSHED AGGREGATE BASE SHALL INCLUDE THE SUPPLY OF ALL LABOR, MATERIAL, AND EQUIPMENT NECESSARY TO PURCHASE, HAUL, AND PLACE BID ITEM AS SHOWN ON THE PLANS. NON WOVEN FILTER FABRIC IS REQUIRED BENEATH ALL ROCK/RIPRAP AND SHALL BE SECURED TO SLOPES AND BOTTOMS USING PINS AS NOTED IN SPECIFICATION 305. QUANTITY IS BASED ON TONS. CONTRACTOR SHALL PROVIDE SCALE TICKERS WEIGHTS INCLUDING TARE WEIGHTS, GROSS WEIGHTS, AND NET WEIGHTS OF MATERIAL DELIVERED. PROPER ENGINEER APPROVED COMPACTION EFFORT WILL BE

REQUIRED FOR AGGREGATE BASE UNDER THE PROPOSED STRUCTURE. MATERIAL FOR CRUSHED

AGGREGATE BASE SHALL BE IA DOT GRADE 14 OR ENGINEER APPROVED EQUAL.

12. BID ITEM FOR SHEET PILING SHALL INCLUDE THE SUPPLY OF ALL LABOR, MATERIAL, AND EQUIPMENT NECESSARY TO PURCHASE, INSTALL, AND WELD ALL SHEET PILING AS SHOWN IN THE PLANS. SHEET PILE

MATERIAL SHALL BE SZ-22 OR APPROVED EQUAL WITH A MINIMUM THICKNESS OF 0.375" (3

8") AND A

MINIMUM SECTION MODULUS OF 18.1^3 . PURCHASE, INSTALLATION, AND WELDING OF SHEET PILING CAP

AS SHOWN IN THE PLANS IS CONSIDERED INCIDENTAL TO BID ITEM SHEET PILING.

13. BID ITEM FOR REMOVAL OF EXISTING STRUCTURE SHALL INCLUDE THE SUPPLY OF ALL LABOR, MATERIAL, AND EQUIPMENT NECESSARY TO EXCAVATE, REMOVE, AND BACKFILL AS NEEDED THE EXISTING BOX CULVERT WATER CONTROL STRUCTURE. ALL DEBRIS SHALL BE DISPOSED OF BY THE CONTRACTOR OFF

SITE.

14. BID ITEM FOR DIKE AND ACCESS ROAD SURFACING - AGG. SURFACE COURSE SHALL INCLUDE THE SUPPLY OF ALL LABOR, MATERIAL, AND EQUIPMENT NECESSARY TO INSTALL BID ITEM AS SHOWN ON THE PLANS.

QUANTITY IS BASED ON TONS. CONTRACTOR SHALL PROVIDE SCALE TICKETS WITH WEIGHTS INCLUDING TARE WEIGHTS, GROSS WEIGHTS, AND NET WEIGHTS OF MATERIAL DELIVERED. MATERIAL FOR DIKE AND ACCESS ROAD SURFACING - AGG. SURFACE COURSE SHALL BE IA DOT CLASS A GRANULAR SURFACING

GRADE 11 OR ENGINEER APPROVED EQUAL.

15. BID ITEM FOR DECKING AND RAILING SHALL INCLUDE THE SUPPLY OF ALL LABOR, MATERIAL, AND EQUIPMENT NECESSARY TO INSTALL GRATING PLATFORM AND HAND RAILING, AS SHOWN ON THE PLANS.

ANY ADDITIONAL COST FOR PRECAST EMBEDS FOR GRATING PLATFORM AND RAILING CALLED OUT IN PLANS ARE CONSIDERED INCIDENTAL TO BID ITEM PRECAST REINFORCED BOX CULVERT FLARED END

SECTION WITH ALUMINUM STOPLOG BAY.

16. BID ITEM STORM WATER AND EROSION CONTROL MAINTENANCE SHALL INCLUDE THE SUPPLY OF ALL LABOR, MATERIAL, AND EQUIPMENT NECESSARY TO MAINTAIN STORM WATER EROSION PREVENTION IN

ACCORDANCE WITH USFWS AND DUCKS UNLIMITED SPECIFICATIONS.

17. USFWS WILL PERFORM SEEDING AND MULCHING OF SITE IN ACCORDANCE WITH THE PROJECT

SPECIFICATIONS.

SPECIFICATIONS

101 GENERAL CONDITIONS

102 SUPPLEMENTAL CONDITIONS

201 MOBILIZATION

202 SITE PREPARATION

203 EXCAVATION

204 EMBANKMENT CONSTRUCTION

301 WATER CONTROL STRUCTURES

302 STRUCTURE AND CULVERT APPURTENANCES

303 CULVERT AND PIPE INSTALLATION

304 CAST-IN-PLACE REINFORCED CONCRETE

305 RIPRAP, REVETMENT AND AGGREGATE PLACEMENT

307 SHEET PILING

311 REMOVAL OF EXISTING CULVERTS AND STRUCTURES

316 DIKE AND ROAD SURFACING

319 DECKING AND RAILING

401 SOIL EROSION AND POLLUTION CONTROL

402 SEEDING AND MULCHING

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ESTIMATED QUANTITIES

BID ITEM # NOTE SPEC # DESCRIPTION UNIT QUANTITY

1 1 201 MOBILIZATION/DEMOBILIZATION LS 1

2 2 202 SITE PREPARATION LS 1

3 3 202 SITE PREPARATION - COFFERDAM PLACEMENT AND REMOVAL LS 1

4 4 203 EXCAVATION CY-P 388

5 5 204 EMBANKMENT CONSTRUCTION CY-P 335

6 6 204 EMBANKMENT CONSTRUCTION - LEVEE REPAIR LF 440

7 7 302 STRUCTURE AND CULVERT APPURTENANCES - ALUMINUM STOPLOGS

AND COMPONENTS LS 1

8 8 303 PRECAST 6' X 4' REINFORCED BOX CULVERT & ACCESSORIES LF 24

9 9 303 PRECAST REINFORCED CUSTOM TYPE 1 BOX CULVERT END SECTION EA 2

10 10 305 IA DOT CLASS E RIPRAP TN 70

11 11 305 CRUSHED AGGREGATE BASE TN 49

12 12 307 SHEET PILING SF-P 259

13 13 311 REMOVAL OF EXISTING CULVERT AND STRUCTURE LS 1

14 14 316 DIKE AND ACCESS ROAD SURFACING - AGG. SURFACE COURSE TN 50

15 15 319 DECKING AND RAILING EA 2

16 16 401 STORM WATER CONTROL AND EROSION CONTROL MAINTENANCE LS 1

17 17 402 SEEDING AND MULCHING AC 1

AFFIX SEAL: DUCKS UNLIMITED, INC.

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CAD FILE:

DRAWN BY:

SURVEYED BY:

BIOLOGIST:

DATE:

PROJECT NUMBER:

R ev is io ns D at e

B y

R ev is io n S he et

04/30/2025

AS & CK

IA-368-1 COVER & SPECS

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US-IA-368-1

LEGEND

DIKE

CHANNEL

DITCH

SPOT ELEVATION

HORIZONTAL &

VERTICAL CONTROL

BENCHMARK

MAJOR CONTOUR

MINOR CONTOUR

TREE LINE

EDGE OF

VEGETATION

EDGE OF

CULTIVATION

APPROXIMATE

WATERLINE

EDGE OF RIP-RAP

EDGE OF GRAVEL

ROAD OR TRAIL

FENCE LINE

APPROXIMATE

PROPERTY LINE

APPROXIMATE

RIGHT-OF-WAY LINE

FOUND

PROPERTY CORNER

SOIL BORING

WATER

CONTROL STRUCTURE

EDGE OF PAVEMENT

OVERHEAD ELECTRIC

UTILITY POLE

GUY WIRE

TELEPHONE PEDESTAL

GAS LINE

SANITARY SEWER

WATER SERVICE LINE CATCH BASIN

MANHOLE

WELL

LIGHT POLE

HYDRANT

SINGLE SIGN

DOUBLE SIGN

MAILBOX

RAILROAD CROSSING

RAILROAD TRACK

STORM SEWER

GUARD RAIL

UNDERGROUND UTILITY

EDGE OF WETLAND

M A

GUY POLEUNDERGROUND ELECTRIC

EDGE OF CATAILS

OUTSIDE EDGE

OF CATAILS FP

SB 1

STORM TILE

GENERAL NOTES:

1. CONTRACTOR SHALL PLACE ANY REMOVED TREES AND WOODY VEGETATION IN A STOCKPILE LOCATION

TO BE DETERMINED BY USFWS AND DUCKS UNLIMITED ENGINEER.

2. NON-PUBLIC ACCESSIBLE AND PUBLIC ACCESSIBLE ROADS OUTSIDE OF CONSTRUCTION LIMITS ARE TO REMAIN UNDISTURBED. ANY DAMAGE TO ROADWAY INSIDE AND OUTSIDE OF CONSTRUCTION LIMITS

SHALL BE REPAIRED BY CONTRACTOR AT NO ADDITIONAL COST.

3. COSTS ASSOCIATED WITH CREATING/IMPROVING AREAS FOR STAGING ARE CONSIDERED INCIDENTAL TO THE PROJECT. ANY AREAS CREATED/IMPROVED FOR STAGING SHALL BE SEEDED AND MULCHED BY

CONTRACTOR.

4. ALL PRECAST BOX CULVERT SECTIONS AND END SECTIONS SHALL FOLLOW IOWA DEPARTMENT OF TRANSPORTATION REINFORCING SPECIFICATIONS AND DETAILS AS SHOWN IN THE PLANS. CONTRACTOR SHALL SUPPLY SHOP DRAWINGS FOR ALL PRECAST SECTIONS AND END SECTIONS TO DUCKS UNLIMITED'S

CONSTRUCTION ENGINEER FOR APPROVAL.

AGGREGATE SCHEDULE

LOCATION

CRUSHED AGGREGATE

BASE (TN)

IA DOT CLASS E

RIPRAP (TN)

DIKE AND ACCESS ROAD SURFACING -

AGG. SURFACE COURSE (TN)

WATER CONTROL STRUCTURE UPSTREAM - 35 -

WATER CONTROL STRUCTURE DOWNSTREAM - 35 -

WATER CONTROL STRUCTURE AGG. BASE 49 - -

LEVEE AGG. SURFACE COURSE (STA 10+00 - 11+50) - - 50

TOTAL 49 70 50

EMBANKMENT CONSTRUCTION - LEVEE REPAIR SCHEDULE

LOCATION LINEAR FEET (FT) PIT RUN COURSE

GRAVEL (TN)

STA: 2+87 - 2+97 LEFT 10 8

STA: 3+91 - 4+53 RIGHT 62 50

STA: 4+43 - 4+53 LEFT 50 40

STA: 4+96 - 5+16 RIGHT 20 16

STA: 5+80 - 7+18 LEFT 138 111

STA: 6+16 - 6+33 RIGHT 17 14

STA: 9+26 - 9+61 LEFT 35 28

STA: 11+10 - 12+18 LEFT 108 87

TOTAL 440 354

EARTHWORK SCHEDULE

LOCATION EXCAVATION (CY CUT) EMBANKMENT

CONSTRUCTION (CY FILL)

STRUCTURE EXCAVATION 180 -

STRUCTURE FINAL GRADING 208 335

TOTAL 388 335

NOTE: 30% CUT/FILL FACTOR WAS APPLIED TO EMBANKMENT CONSTRUCTION (CY).

ADDITIONAL NOTES:

1. THE PROJECT SPECIFICATIONS AS PREPARED BY DUCKS UNLIMITED, INC. SHALL BE CONSIDERED AS

PART OF THIS DOCUMENT.

2. ALL APPLICABLE FEDERAL, STATE, AND LOCAL LAWS AND ORDINANCES WILL BE COMPLIED WITH IN

THE CONSTRUCTION OF THIS PROJECT.

3. IF CULTURAL RESOURCE IS IDENTIFIED DURING CONSTRUCTION, STOP IMMEDIATELY AND NOTIFY

ENGINEER AND U.S. FISH AND WILDLIFE SERVICE.

4. PRODUCT DATA SHEETS SHALL BE PROVIDED FOR ALL BID ITEM MATERIALS, AS WELL AS ANY

OTHER MATERIALS, AS REQUESTED BY THE ENGINEER.

5. NO ACTIVITY WILL BE AUTHORIZED WHICH JEOPARDIZES THE CONTINUED EXISTENCE OF A

THREATENED OR ENDANGERED SPECIES OR A SPECIES PROPOSED FOR SUCH DESIGNATION, AS

IDENTIFIED UNDER THE FEDERAL ENDANGERED SPECIES ACT, OR WILL DESTROY OR ADVERSELY

MODIFY THE CRITICAL HABITAT OF SUCH A SPECIES. THE ENGINEER WILL CONSULT WITH A

QUALIFIED BIOLOGIST IF SUCH A SITUATION IS BELIEVED TO EXIST ONSITE AND A COURSE OF

ACTION DETERMINED. EXISTING EAGLE NESTS WILL BE PROVIDED WITH A 660' BUFFER ZONE

UNLESS OTHERWISE INDICATED BY THE NATIONAL BALD EAGLE MANAGEMENT GUIDELINES

PUBLISHED BY THE US FISH AND WILDLIFE SERVICE MAY 2007.

6. TO PROTECT THREATEND/ENDANGERED BATS, TREES SHALL BE REMOVED IN ACCORDANCE WITH IOWA DOT ARTICLE 2101.10 BETWEEN OCTOBER 1ST AND MARCH 31ST. TREE FELLING IN THAT TIME WILL ONLY REQUIRE TREES 3" IN DIAMETER AND LARGER TO BE CUT 3 TO 4 FEET ABOVE

GROUND LINE. THE CONTRACTOR SHALL LIMIT REMOVAL OF FOREST COVER TO THOSE AREAS

WHICH ARE NECESSARY FOR THE CONSTRUCTION OF THE WORK AND AS DIRECTED BY THE

ENGINEER.

7. ALL WORK SHALL BE COMPLETED PER DU SPECIFICATIONS. IF REQUIRED WORK IS NOT INCLUDED

IN DU SPECIFICATIONS, WORK SHALL CONFORM TO THE CURRENT EDITION OF THE IOWA

STATEWIDE URBAN DESIGN AND SPECIFICATIONS (SUDAS).

8. THE VOLUMES AND QUANTITIES AS PROVIDED ARE ESTIMATED FROM TOPOGRAPHIC INFORMATION, ACQUIRED FROM MULTIPLE SOURCES, USING A COMPUTER PROGRAM. PAYMENT WILL BE MADE

BASED ON PLAN QUANTITIES UNLESS OTHERWISE NOTED OR ADDITIONAL EXCAVATION IS

DIRECTED BY THE ENGINEER. EXCAVATION RESULTING FROM THE CONTRACTOR'S IMPROPER

CONSTRUCTION OPERATIONS, SITE CONDITIONS, OR OTHERWISE, WILL NOT BE INCLUDED FOR

MEASUREMENT AND PAYMENT.

EX. LEVEE DEPRESSION

STA: 6+16 - 6+33 RIGHT

L = 17 FT

CP 1

SET CAPPED REBAR (RTK)

N: 3923133.51 E: 4756433.70

ELEV: 1133.44 (NAVD88)

SMITH POOL

DARLING POOL

EX. AG.

FIELD

EX. AG.

FIELD

A C C

S R

O A D

TREES

EX. UPLAND

PRAIRIE

EX. UPLAND

PRAIRIE

EX. MARSH EDGE

VEGETATION

EX. LEVEE DEPRESSION

STA: 9+26 - 9+61 LEFT

L = 35 FT

EXISTING 6' X 3' CONCRETE BOX

CULVERT W/ FLARED WING WALLS

TO BE REMOVED; SALAVGE EXISTING

WATER LEVEL GAUGES

EX. LEVEE DEPRESSION

STA: 11+10 - 12+18 LEFT

L = 108 FT

EX. MARSH EDGE

VEGETATION

EX. MARSH EDGE

VEGETATION

EX. AG.

FIELD

CP 3

SET CAPPED REBAR (RTK)

N: 3921585.14 E: 4756284.52

ELEV: 1180.06 (NAVD88)

H S

CP 2

SET CAPPED REBAR (RTK)

N: 3923773.61 E: 4754091.89

ELEV: 1144.56 (NAVD88)

EX. AG.

FIELD

EX. AG.

FIELD

EX. LEVEE DEPRESSION

STA: 3+91 - 4+53 RIGHT

L = 62 FT

EX. LEVEE DEPRESSION

STA: 4+96 - 5+16 RIGHT

L = 20 FT

EX. LEVEE DEPRESSION

STA: 5+80 - 7+18 LEFT

L = 138 FT

EX. LEVEE DEPRESSION

STA: 4+43 - 4+93 LEFT

L = 50 FT

EX. LEVEE DEPRESSION

STA: 2+87 - 2+97 LEFT

L = 10 FT

October 17, 2023

US-IA-368-1, Union Slough

HORIZONTAL CONTROL

Coordinates are NAD 83 (CORS 2011), Iowa State Plane North Zone 1401, and units of measurement are in U.S. Survey Feet. Raw data was collected for 6.8 hours on October 17, 2023 using a Trimble R12 GPS base receiver, one R12 Trimble Rover, and one R10 Trimble Rover. Coordinates are established from Control Point 1 and post processed with the NGS OPUS (National Geodetic Survey, Online Positioning User Service) solution for the occupied Control Point 1.

VERTICAL CONTROL

Elevations established from Control Point 1 and post processed with the NGS OPUS solution for the occupied Control Point 1. Vertical Datum was observed in NAVD 88, using GEOID18.

CONTROL POINT DATA

POINT #

ELEVATION

1133.44

1144.56

NORTH

3923133.51

3923773.61

EAST

4756433.70

4754091.89

DESCRIPTION

SET CAPPED REBAR

AFFIX SEAL: DUCKS UNLIMITED, INC.

ON:

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CAD FILE:

DRAWN BY:

SURVEYED BY:

BIOLOGIST:

DATE:

PROJECT NUMBER:

R ev is io ns D at e

B y

R ev is io n S he et

04/30/2025

AS & CK

IA-368-1 EXISTING COND.& TOPO

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GRAPHIC SCALE

1 inch = feet120

120 0 60 120 240 480

A S

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3 1180.06 3921585.14 4756284.52 SET CAPPED REBAR

LEVEE REPAIR AND REGRADING

STA: 11+10 - 12+18 LEFT

L = 108 FT

LEVEE REPAIR AND REGRADING

STA: 3+91 - 4+53 RIGHT

L = 62 FT

LEVEE REPAIR AND REGRADING

STA: 4+96 - 5+16 RIGHT

L = 20 FT

LEVEE REPAIR AND REGRADING

STA: 9+26 - 9+61 LEFT

L = 35 FT

DOWNSTREAM COFFER DAM LOCATION

TO BE INSTALLED, MAINTAINED, AND

REMOVED BY CONTRACTOR AT END OF

PROJECT

LEVEE REPAIR AND REGRADING

STA: 5+80 - 7+18 LEFT

L = 138 FT

UPSTREAM COFFER DAM LOCATION

TO BE INSTALLED, MAINTAINED, AND

REMOVED BY CONTRACTOR AT END OF

PROJECT

INSTALL 6' X 4' BOX CULVERT WCS

SEE SHEET 5 DETAILS

0+00

0+84

SMITH POOL

DARLING POOL

EX. AG.

FIELD

EX. UPLAND

PRAIRIE

EX. MARSH EDGE

VEGETATION

EX. AG.

FIELD

BORROW AREA

NOTE: TOPSOIL SHALL BE STRIPPED A MINIMUM OF 12"

PRIOR TO OBTAINING BORROW. SPOIL MATERIAL TO BE

RE-SPOILED IN THIS AREA PRIOR TO RE-SPREADING OF

INITIAL STRIPPED TOPSOIL.

REMOVE EXISTING 6' X 3' BOX CULVERT

AND TWO (2) FLARED END SECTIONS.

REMOVED MATERIAL TO BE HAULED

OFF-SITE.

LEVEE REPAIR AND REGRADING

STA: 6+16 - 6+33 RIGHT

L = 17 FT

HAUL ROAD

NOTE: CONTRACTOR TO LEAVE HAUL ROAD IN DRIVABLE

CONDITION FREE OF RUTS AND DEBRIS. BARE GROUND

IS TO BE SEEDED AND MULCHED AT END OF PROJECT.

CONSTRUCTION ACCESS FROM UNION SLOUGH NATIONAL

WILDLIFE REFUGE HEADQUATERS LOCATED AT

1710 360TH ST.

TITONKA, IA 50480

EX. AG.

FIELD

EX. AG.

FIELD

LEVEE REPAIR AND REGRADING

STA: 4+43 - 4+93 LEFT

L = 50 FT

LEVEE REPAIR AND REGRADING

STA: 2+87 - 2+97 LEFT

L = 10 FT

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AFFIX SEAL: DUCKS UNLIMITED, INC.

ON:

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3-w w w .d uc ks

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CAD FILE:

DRAWN BY:

SURVEYED BY:

BIOLOGIST:

DATE:

PROJECT NUMBER:

R ev is io ns D at e

B y

R ev is io n S he et

04/30/2025

AS & CK

IA-368-1 SITE PLAN

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GRAPHIC SCALE

1 inch = feet150

150 0 75 150 300 600

9.00'

10.00'

SHEET PILE CUT-OFF WALL (SEE SHEET 9 FOR DETAILS)

1129.0' 1128.0'

1126.0'

1125.0'

1124.0'

1123.0'

1122.0'

1129.0'

1128.0'

1127.0'

1126.0'

1125.0'

1124.0'

.0'

8.00'

18" DEPTH IA DOT CLASS E RIPRAP - 35 TN

18" IA DOT CLASS E RIPRAP - 35 TN

13.05'

1127.0'

1129.0'

1128.0'

1127.0'

1126.0'

1125.0'

1124.0'

1123.0'

1128.0'

1127.0'

1126.0'

1125.0'

1124.0'

1123.0'

.0'

SHEET PILE CUT-OFF WALL (SEE SHEET 9 FOR DETAILS)

12.00'

GRATING DECK (SEE SHEET 7 FOR DETAILS)

8.00'

6" DEPTH AGG SURFACE COURSE - 50 TN

STA: 10+00.00 - 11+50.00

L= 150.0'

NOTE: WIDTH ALONG LEVEE IS 8.0' FOR

VEHICLE TRAFFIC. WIDTH EXTENDS TO

EDGE OF PROPOSED BOX CULVERT

STRUCTURE AT THE PROPOSED BOX

CULVERT STRUCTURE TO ALLOW FOR

FOOT TRAFFIC TO GRATING PLATFORMS.

GRATING DECK (SEE SHEET 7 FOR DETAILS)

CENTERLINE OF LEVEE

10.00'

0+00

0+84

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COFFERDAM TO BE INSTALLED, MAINTAINED, AND

REMOVED BY CONTRACTOR (BOTH SIDES) IN

ORDER TO ACCOMPLISH THE WORK. COFFERDAM SHALL BE

SHEET PILING OR EARTHEN AS NEEDED, TO ACCOMPLISH

THE WORK. DEWATERING AND WATER MAINTENANCE IS

CONSIDERED INCIDENTAL TO BID ITEM SITE PREPARATION -

COFFERDAM PLACEMENT AND REMOVAL. NO ADDITIONAL

PAYMENTS WILL BE MADE FOR ADDITIONAL

DEWATERING EFFORTS.

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C H

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A N

D A

C R

N O

E A

O N

AFFIX SEAL: DUCKS UNLIMITED, INC.

ON:

G R

A N

C R

N A L

M A N

B O

V A R D

B U

A N

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CAD FILE:

DRAWN BY:

SURVEYED BY:

BIOLOGIST:

DATE:

PROJECT NUMBER:

R ev is io ns D at e

B y

R ev is io n S he et

04/30/2025

AS & CK

IA-368-1 SITE PLAN

U N

U G

H N

W R

H A N

K O

S S U

O U

W A

U C

R E

A N

US-IA-368-1

A S

A L

A N

GRAPHIC SCALE

1 inch = feet5

5 0 2.5 5 10 20

NOTE:

CONTRACTOR SHALL GRADE ADJACENT TO STRUCTURE AT

EACH END TO INTEGRATE ADJACENT GRADING TO

EXISTING TOPOGRAPHY AS SHOWN BY THE PROPOSED

GRADING LINES.

0+00 0+50 0+84

24" DEPTH CRUSHED

AGGREGATE BASE

GRATING PLATFORM (SEE

SHEET 7 FOR DETAILS)

CAST IN PLACE

CONCRETE TOE WALL

NON-WOVEN GEOTEXTILE

FILTER FABRIC

EXISTING GRADE

HAND RAILING REMOVED

FOR CLARITY

6" AGG. SURFACE COURSE

FINISHED GRADE

TOP OF LEVEE ELV.: 1129.0'

GRATING PLATFORM

(SEE SHEET 7 FOR

DETAILS)

HAND RAILING REMOVED

FOR CLARITY

12.00'

10 L.F. TYPE 1 END

SECTION 24 L.F. OF 6' X 4' PRECAST BOX CULVERT

10 L.F. TYPE 1 END

SECTION

SHEET PILE

CUT OFF WALL

24" DOUBLE EYE BOLT

TIE (REFER TO IOWA DOT

SPECS)

INV. ELV.: 1122.0'

3:1 3:1

STOPLOG CHANNEL

(SEE SHEET 8 FOR

DETAILS)

STOPLOG CHANNEL

(SEE SHEET 8 FOR

DETAILS)

CAST IN PLACE

CONCRETE TOE WALL

EXISTING GRADE

FINISHED GRADE

N O

C E:

C O

N S

U C

O N

E S A

S T

H E

S O

N S

Y O

E C O

A C

D U

C K S U

S H

N O

T A S S U

M E

A N

Y R

R T

H E

S A

E W

O R K P

R M

R S O

N S E

N G

A G

N T

H E

W O

R K

R B Y

U C

R O

F O

S O

N S O

N -S

M A

L, D

A N

D I

R M

O N

I S T

H E

O F

D U

C K S U

I T

M A Y

N O

T B E

U S

O R R

R O

D U

F O

R A

N Y

S E

H O

U T

R W

C O

N S

T O

F A N

A U

T O

F D

U C K S U

D U

C K S U

M A K

N O

R W

A R R A N

F A N

Y K

D R

A R D

T H

L, D

A N

D I

R M

O N

B U

T N

O T

T O

E A C C U

R A C Y

O F

M A

L, D

A N

D I

R M

O N

O R I

A B

R A

N Y

U S E

O F

M A

L, D

A N

D I

R M

O N

I S

A T

U S

S S

B Y

U S

G A

N Y

O F

M A

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D I

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O N

A G

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H A T

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O T

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U N

S S T

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N O

F A L

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S S

N A L

A R C H

T, L

A N

D S C A

A R C H

T O

R L

A N

D S

U R V

O R

A N

M I

N A

N Y

W A Y.

I F

A N

M B

G T

H E

M P

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P R O

S S

N A L

E A

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A R C H

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R E, T H

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A N

D A

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AFFIX SEAL: DUCKS UNLIMITED, INC.

ON:

G R

A N

C R

N A L

M A N

B O

V A R D

B U

A N

3-w w w .d uc ks

.o rg

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\I A -3

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.d w g, /2 2/

A nd re w

S ch ip pe rs

S tr uc tu re P ro fil e, N on e

CAD FILE:

DRAWN BY:

SURVEYED BY:

BIOLOGIST:

DATE:

PROJECT NUMBER:

R ev is io ns D at e

B y

R ev is io n S he et

04/30/2025

AS & CK

IA-368-1 SITE PLAN

U N

U G

H N

W R

H A N

K O

S S U

O U

W A

U C

R E

US-IA-368-1

A S

A L

A N

VERTICAL SCALE

1 inch = feet

HORIZONTAL SCALE

1 inch = feet

4 82

PRECAST BOX CULVERT NOTES:

1. ALL PRECAST BOX CULVERT SECTIONS AND END SECTIONS SHALL FOLLOW IOWA DEPARTMENT OF

TRANSPORTATION REINFORCING SPECIFICATIONS AND DETAILS AS SHOWN IN THE PLANS. CONTRACTOR SHALL SUPPLY SHOP DRAWINGS FOR ALL PRECAST SECTIONS AND END SECTIONS TO DUCKS UNLIMITED'S

CONSTRUCTION ENGINEER FOR APPROVAL.

2. ALL PRECAST UNITS SHOWN OF THESE PLANS SHALL COMPLY WITH IOWA DEPARTMENT OF

TRANSPORTATION STANDARD DESIGN FOR SINGLE PRECAST REINFORCED CONCRETE BOX CULVERTS:PES

2-20-T1, PRCB G2-20, PRCB 6-20, & PES 1-20-T1.

3. 6'X4' SLOPED END SECTION SHALL BE FIRST 10' SECTION SHOWN ON PES 1-20-T1. OUTSIDE END BE SMOOTH (NO TONGUE AND GROOVE). CONNECTION TO MODIFIED RCB SHALL BE MADE WITH 2 SETS TIE

RODS PER JOINT AS SHOWN.

4. CONSEAL CS-231 CONTROLLED EXPANSION WATER STOP JOINT MASTIC 1 14" THICK SHALL BE USED

BETWEEN BOX CULVERT JOINTS.

5. CONSEAL CS-75 SURFACE PRIMER SHALL BE APPLIED TO EXTERIOR JOINT BEFORE INSTALLING CONWRAP CS-212 EXTERIOR JOINT WRAP. PRIMER SHALL BE FROM BOTTOM HAUNCH TO BOTTOM HAUNCH OPPOSITE

SIDE. LIFTING HOLES ALONG TOP AND SIDES SHALL ALSO BE TOUCHED WILL PRIMER.

6. CONWRAP CS-212 EXTERIOR JOINT WRAP AT 24" WIDTH SHALL BE USED ON EXTERIOR JOINTS. WRAP SHALL INSTALLED AS ONE CONTINUOUS PIECE. CONTRACTOR SHALL WRAP EXTERIOR JOINT STARTING AND ENDING AT BOTTOM HAUNCHES. LIFTING HOLES ALONG TOP AND SIDES SHALL BE COVERED WITH MIN. 12"x12" PIECE OF CONWRAP CS-212 AFTER GROUT/PLUGS HAVE BEEN INSTALLED. NOTE THAT

CS-212 SHALL BE INSTALLED INSIDE OF CONNECTING RODS.

7. DOUBLE EYE TIE RODS SHOULD BE USED.

8. WATER LEVEL GAUGES FROM EXISTING STRUCTURE SHALL BE SALVAGED AND RE-INSTALLED ON NEW

PRECAST CONCRETE BOXES (AT LOCATIONS APPROVED BY USFWS), AT CORRECT ELEVATIONS.

NOTES:

1. GRATING SHALL BE McNICHOLS 19-W-4 GW 200 GALVANIZED STEEL GRATING W/

SERRATION

2. REFER TO MANUFACTURES SPECIFICATIONS FOR ADDITIONAL INFORMATION AND

INSTALLATION INSTRUCTIONS

6' 8" TO CENTERLINE OF STOPLOG CHANNEL

N E

O F

G C

H A N

PRECAST MANUFACTURER SHALL BLOCK OUT

HAUNCH TO EMBED STOP LOG CHANNEL GUIDE

1' 0"

TONGUE AND GROOVE JOINT FOLLOW

IOWA DOT SPEC. PES 1-20-T1

8" X 12" GALVANIZED PLATE CAST INTO STRUCTURE

(ONLY UP STREAM/INLET BOX)

8' 5" TO CENTERLINE OF 12" GALVANIZED PLATE

6' 11"

6" X 6" X 38" GALVANIZED STEEL

PLATE CAST INTO STRUCTURE FOR

GRATING PLATFORM RISERS TO BE

WELDED TO

3" X 3" X 38" GALVANIZED

STEEL TUBING RISER

3" X 4" X 12" GALVANIZED ANGLE

STEEL CROSS MEMBER

L = 6' 11"

GALVANIZED STEEL BAR GRATING SHALL BE BOLTED

TO CROSS MEMBER AND CURB @ 12" O.C.

3" X 2" X 14" GALVANIZED ANGLE

STEEL CAST INTO CURB WITH

2" Ø 3" STUDS @ 12" CNTRS.

TS 2" x 2" x 3

16" GALV. HANDRAIL AND POST, WELD @ ALL CONTACT POINTS

GW-200-2 2" STEEL GALVANIZED BAR GRATING

CAST-IN-PLACE REINFORCED TOE WALL

(SEE IOWA DOT SPEC PES 1-20-T1)

REMOVABLE GALV. OR STAINLESS STEEL SAFETY CHAIN

TS 2" x 2" x 3

16" GALV. HANDRAIL AND POST,

WELD @ ALL CONTACT POINTS

STOP LOG CHANNEL (SEE DETAIL 5 FOR DETAILS)

4" x 38" PLATE CAST INTO STRUCTURE TYING BOTH STOP LOG

GUIDES TO EACH OTHER

ANGLE STEEL CROSS

MEMBER TO BE FIELD

WELDED TO STEEL TUBE

RISER

NOTES:

1. ALL WELDS TO BE 14" FILLET WELDS.

2. TYPE 1 END SECTIONS WITH STOPLOG BAYS SHALL ADHERE TO IOWA DOT

REINFORCEMENT SPECIFICATIONS IN PES 1-20-T1 AND PES 2-20-T1. (SEE SHEET

10)

3. PRECAST MANUFACTURER SHALL REMOVE CALLED OUT HAUNCH AS SHOWN IN

THE PLANS FOR STOPLOG BAY TO BE CAST INTO STRUCTURE.

DETAIL - TYPE 1 END SECTION WITH STOPLOG CHANNEL SIDE VIEW1 NOT TO SCALE

DETAIL - TYPE 1 END SECTION WITH STOPLOG CHANNEL FRONT VIEW2 NOT TO SCALE

DETAIL - TYPE 1 END SECTION WITH STOPLOG CHANNEL TOP VIEW3 NOT TO SCALE

DETAIL SHEETS CONTENT LEGEND

VIEW CONTENTS

1 DETAIL - TYPE 1 END SECTION WITH STOPLOG CHANNEL SIDE VIEW

2 DETAIL - TYPE 1 END SECTION WITH STOPLOG CHANNEL FRONT VIEW

3 DETAIL - TYPE 1 END SECTION WITH STOPLOG CHANNEL TOP VIEW

4 DETAIL - GRATING

5 DETAIL - GALV. STOPLOG CHANNEL BAY

6 DETAIL - GALV. STOPLOG CHANNEL

7 DETAIL - ALUMINUM STOPLOGS

8 DETAIL - STOPLOG LIFTING HOOK

9 DETAIL - RAILING

10 ELEVATION - SHEET PILE INSTALLATION

11 DETAIL - SHEET PILE INSTALLATION

12 PLAN - SHEET PILE AND STRUCTURE INSTALLATION

13 DETAIL - SHEET PILE CAP INSTALLATION

14 DETAIL - IOWA DOT SPEC PRCB G2-20

15 DETAIL - IOWA DOT SPEC PRCB 6-20

16 DETAIL - IOWA DOT SPEC PES 1-20-T1

17 DETAIL - IOWA DOT SPEC PES 2-20-T1

18 SECTION - TYPICAL LEVEE REHABILITATION DETAIL

19 DETAIL - TYPICAL GEOTEXTILE FILTER FABRIC

GW-200-2 2" STEEL

GALVANIZED BAR GRATING

L = 1' 7" W= 6' 11"

3" X 3" X 38" GALVANIZED STEEL TUBING

RISER TO BE FIELD CUT AND WELDED

TO 6" X 6" X 38" EMBEDED GALVANIZED

STEEL PLATE

DETAIL - GRATING4 NOT TO SCALE

6' 11"

1' 7"

GW-200-2 2" STEEL GALVANIZED BAR GRATING

1' 7"

INV. ELV.: 1122.0'

ELV.: 1126.0'

TOP OF CURB ELV.: 1127.67'

INV. ELV.: 1122.0'

ELV.: 1126.0'

ELV.: 1126.67'

TOP OF CURB ELV.: 1127.67'

GALVANIZED STEEL BAR GRATING SHALL BE BOLTED TO CURB WITH TAPCON

CONCRETE ANCHORS @ 12" O.C. OR ENGINEER APPROVED EQUAL

WATER LEVEL GAUGE SECO #99001 0' - 4' WATER LEVEL GAUGE OR ENGINEER APPROVED EQUAL (BOTH END SECTIONS); EXISTING WATER LEVEL GAUGES MAY BE SALVAGED AND RE-USED ON NEW PRECAST STRUCTURES.

0' 4"

CAST-IN-PLACE REINFORCED TOE WALL

(SEE IOWA DOT SPEC PES 1-20-T1)

6" X 6" X 38" GALVANIZED STEEL

PLATE CAST INTO STRUCTURE FOR

GRATING PLATFORM RISERS TO BE

WELDED TO

N O

C E:

C O

N S

U C

O N

E S A

S T

H E

S O

N S

Y O

E C O

A C

D U

C K S U

S H

N O

T A S S U

M E

A N

Y R

R T

H E

S A

E W

O R K P

R M

R S O

N S E

N G

A G

N T

H E

W O

R K

R B Y

U C

R O

F O

S O

N S O

N -S

M A

L, D

A N

D I

R M

O N

I S T

H E

O F

D U

C K S U

I T

M A Y

N O

T B E

U S

O R R

R O

D U

F O

R A

N Y

S E

H O

U T

R W

C O

N S

T O

F A N

A U

T O

F D

U C K S U

D U

C K S U

M A K

N O

R W

A R R A N

F A N

Y K

D R

A R D

T H

L, D

A N

D I

R M

O N

B U

T N

O T

T O

E A C C U

R A C Y

O F

M A

L, D

A N

D I

R M

O N

O R I

A B

R A

N Y

U S E

O F

M A

L, D

A N

D I

R M

O N

I S

A T

U S

S S

B Y

U S

G A

N Y

O F

M A

L, D

A N

D I

R M

O N

A G

S T

H A T

D U

C K S U

O T

O R T

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D I

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U N

S S T

A R E

A C

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F A L

P R O

S S

N A L

A R C H

T, L

A N

D S C A

A R C H

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R L

A N

D S

U R V

O R

A N

M I

N A

N Y

W A Y.

I F

A N

M B

G T

H E

M P

O F

A L

P R O

S S

N A L

E A

G E

N G

A R C H

T, L

A N

D S C A

A R C H

T O

R L

A N

D S

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D I

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N O

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R S

R E, T H

E D

O F

S U

C H

O N

A N

D A

C R

N O

E A

O N

A S

A L

A N

AFFIX SEAL: DUCKS UNLIMITED, INC.

ON:

G R

A N

C R

N A L

M A N

B O

V A R D

B U

A N

3-w w w .d uc ks

.o rg

U se rs \a sc hi pp er s\ D uc ks

U nl im ite d In co rp or at ed \I ow a

D oc um en ts

\I ow a\

_C 3D

P ro je ct s\

-3

-1 U ni on

S lo ug h

M id dl e D ik e

W C S \C

3D _D

R A W

\I A -3

-1

S .d w g

, 5 /2

P M

, A nd re w

S ch ip pe rs, S tr uc tu re D et ai ls

, N on e

CAD FILE:

DRAWN BY:

SURVEYED BY:

BIOLOGIST:

DATE:

PROJECT NUMBER:

R ev is io ns D at e

B y

R ev is io n S he et

04/30/2025

AS & CK

IA-368-1 DETAILS

U N

U G

H N

W R

H A N

K O

S S U

O U

W A

U C

R E

US-IA-368-1

NOT TO SCALE

DETAIL - GALV. STOPLOG CHANNEL6

3 4

3" x 14" STRAP

L3" x 3" x 14"

FULL LENGTH CONTINUOUS WELD

4" x 14" STRAP

FULL LENGTH CONTINUOUS WELDS

2" Ø 3" STUD @ 12" CNTRS.

STOPLOG CHANNEL (SEE DETAIL 6)

4" x 38" PLATE SHALL HAVE 12"

Ø 3" STUDS @ 12" CNTRS.

4" x 38" PLATE SHALL BE FULLY

WELDED TO STOPLOG CHANNELS

ON BOTH SIDES.

FULL LENGTH CONTINUOUS WELDS4'

G C

H A N

6' 6 12"

1' 14" 1' 0" 1' 0" 0' 6" 1' 14"1' 0"1' 0"

1' 0"

1 2"

2' 0" 3' 4"

FRONT

TOP

SIDE

GALV. TS 2" x 2" x 3

16" HANDRAIL AND POST,

WELD @ ALL CONTACT POINTS

2' 4 12 "

REMOVABLE GLAV. SAFETY CHAIN

NOT TO SCALE

DETAIL - RAILING9

NOTES:

1. STOPLOGS SHALL BE 1" SHORTER THAN WIDTH BETWEEN STOPLOG GUIDES.

2. FABRICATOR TO PROVIDE (18) 6", (2) 3", AND (2) 2" STOPLOGS FOR STRUCTURE.

3. ALUMINUM STOPLOGS SHALL BE SUPPLIED BY THE CONTRACTOR. THE CONTRACTOR IS

RESPONSIBLE FOR CUTTING STOPLOGS TO PROPER LENGTH AND FABRICATING LIFTING HOLES

IN ALL STOPLOGS AS SHOWN.

4. DEBURR ALL EDGES. FINISHED SURFACE SHALL BE FLAT AND FREE OF BURRS, NICKS AND

DENTS TO PROVIDE A FLAT SURFACE FOR THE STOPLOG ABOVE.

NOT TO SCALE

DETAIL - ALUMINUM STOPLOGS7

NOT TO SCALE

DETAIL - STOPLOG LIFTING HOOK8

NOT TO SCALE

DETAIL - GALV. STOPLOG CHANNEL BAY5

GALV. TS 2" x 2" x 3

16" HANDRAIL AND POST,

WELD @ ALL CONTACT POINTS

INV. ELV. 1122.0'

GALV. HANDRAIL IS TO BE BOLTED TO GRATING

AT CORNERS AND TAPCON BOLTED INTO CONCRETE

CURB AS NEEDED

GALV. HANDRAIL IS TO BE

BOLTED TO GRATING AT CORNERS

AND TAPCON BOLTED INTO CONCRETE

CURB AS NEEDED

GALV. HANDRAIL IS TO BE BOLTED TO GRATING

AT CORNERS AND TAPCON BOLTED INTO CONCRETE

CURB AS NEEDED

6' 0" OPENING

TOP OF STOPLOG

CHANNEL ELV. 1126.5'

4" x 38" PLATE

N O

C E:

C O

N S

U C

O N

E S A

S T

H E

S O

N S

Y O

E C O

A C

D U

C K S U

S H

N O

T A S S U

M E

A N

Y R

R T

H E

S A

E W

O R K P

R M

R S O

N S E

N G

A G

N T

H E

W O

R K

R B Y

U C

R O

F O

S O

N S O

N -S

M A

L, D

A N

D I

R M

O N

I S T

H E

O F

D U

C K S U

I T

M A Y

N O

T B E

U S

O R R

R O

D U

F O

R A

N Y

S E

H O

U T

R W

C O

N S

T O

F A N

A U

T O

F D

U C K S U

D U

C K S U

M A K

N O

R W

A R R A N

F A N

Y K

D R

A R D

T H

L, D

A N

D I

R M

O N

B U

T N

O T

T O

E A C C U

R A C Y

O F

M A

L, D

A N

D I

R M

O N

O R I

A B

R A

N Y

U S E

O F

M A

L, D

A N

D I

R M

O N

I S

A T

U S

S S

B Y

U S

G A

N Y

O F

M A

L, D

A N

D I

R M

O N

A G

S T

H A T

D U

C K S U

O T

O R T

R U

S E

O F

M A

L, D

A N

D I

R M

O N

O R T

H E

S T

S A

O N

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F O

R A

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R S O

U N

S S T

A R E

A C

N G

U N

T H

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N O

F A L

P R O

S S

N A L

A R C H

T, L

A N

D S C A

A R C H

T O

R L

A N

D S

U R V

O R

A N

M I

N A

N Y

W A Y.

I F

A N

M B

G T

H E

M P

O F

A L

P R O

S S

N A L

E A

G E

N G

A R C H

T, L

A N

D S C A

A R C H

T O

R L

A N

D S

U R V

O R S

H A

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N O

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B Y

R S

R E, T H

E D

O F

S U

C H

O N

A N

D A

C R

N O

E A

O N

A S

A L

A N

AFFIX SEAL: DUCKS UNLIMITED, INC.

ON:

G R

A N

C R

N A L

M A N

B O

V A R D

B U

A N

3-w w w .d uc ks

.o rg

U se rs \a sc hi pp er s\ D uc ks

U nl im ite d In co rp or at ed \I ow a

D oc um en ts

\I ow a\

_C 3D

P ro je ct s\

-3

-1 U ni on

S lo ug h

M id dl e D ik e

W C S \C

3D _D

R A W

\I A -3

-1

S .d w g

, 5 /2

P M

, A nd re w

S ch ip pe rs, S tr uc tu re D et ai ls

, N on e

CAD FILE:

DRAWN BY:

SURVEYED BY:

BIOLOGIST:

DATE:

PROJECT NUMBER:

R ev is io ns D at e

B y

R ev is io n S he et

04/30/2025

AS & CK

IA-368-1 DETAILS

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US-IA-368-1

AutoCAD SHX Text

1/2" ROD

AutoCAD SHX Text 1 1/4"

AutoCAD SHX Text 12"

AutoCAD SHX Text 2"

AutoCAD SHX Text

(2 REQ'D)

AutoCAD SHX Text L1

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1-1/4" DIA. BEND HOOK IN LINE WITH HANDLE

AutoCAD SHX Text 2-3/4"

AutoCAD SHX Text 1.50"

AutoCAD SHX Text 5.00"

AutoCAD SHX Text 2.00"

AutoCAD SHX Text 3.00"

AutoCAD SHX Text 1.50"

AutoCAD SHX Text 1.00"

AutoCAD SHX Text L2

AutoCAD SHX Text 3.50"

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ONE PER CONNECTION

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2 PER STRUCTURE. MATERIAL TO BE STEEL.

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%%UEXTENSION

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%%UHOOK

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HANDLE

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MAX LENGTH FOR EACH 5'. AFTER ADD A SECOND EXTENSION L3

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NOTE: L1 AND L2 EQUAL HEIGHT OF RISER PLUS 1'

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1/4"%%C THRU

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QUICK PIN

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1/2" ROD

AutoCAD SHX Text 98320A132

AutoCAD SHX Text McMaster Carr #

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1/2" SCH 40PIPE TYP.

AutoCAD SHX Text 1/4"

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VARIES SEE NOTES

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TO BE DETERMINED IN FIELD

AutoCAD SHX Text 3/4"

AutoCAD SHX Text 1"

AutoCAD SHX Text 2"

AutoCAD SHX Text 6"

AutoCAD SHX Text 4"

AutoCAD SHX Text 1"

AutoCAD SHX Text 6"

AutoCAD SHX Text 2"

AutoCAD SHX Text 4"

AutoCAD SHX Text 2"

AutoCAD SHX Text 5/8"

AutoCAD SHX Text 3/4"

3/4"

0' 6"

TOP OF SHEETPILE ELV.: 1126.00'

12' 12'

10'

6'6'

7' 4"

10'

6'6'

INV. ELV.: 1122.00'

TOP OF 12" X 12" CURB ELV.: 1127.67'

7' 4" 7' 4"

CAST IN PLACE REINFORCED TOE WALL

SHEET PILE SPECIFICATIONS

SZ-22 SHEET PILE OR APPROVED EQUAL

MINIMUM THICKNESS 0.375 INCHES

MINIMUM SECTION MODULUS 18.1 IN^3/LF OF WALL

QUANTITIES:

STEEL SHEET PILE SZ-22 (26.75" WIDE)

5' LENGTH 2 REQUIRED 10 LF

6' LENGTH 4 REQUIRED 24 LF

7' 4" LENGTH 3 REQUIRED 22 LF

8' LENGTH 2 REQUIRED 16 LF

10' LENGTH 2 REQUIRED 20 LF

12' LENGTH 2 REQUIRED 24 LF

TOTAL DRIVE 116 LF

TOTAL SQUARE FT 259 SF

CAP PLATE

13' 0.5" LENGTH 2 REQUIRED 27 LF

NOTES:

1. ALL WELDS TO BE 14" FILLET WELDS (SEE D.U. SPECIFICATIONS)

2. ALL WELDS WILL BE SUBJECT TO LAMPING. ANY AREAS FAILING WILL BE

REWELDED BEFORE ACCEPTANCE OF PROJECT.

3. TOP OF SHEET PILE SHALL BE TRIMMED TO GRADES INDICATED ON PLANS TO

REMOVE AN DAMAGE CAUSED BY DRIVING. ANY TRIMMING OVER 3" SHALL BE

CONSIDERED CUT-OFF AND WILL BE DEDUCTED FROM THE COST OF "SHEET PILE

INSTALLATION & MATERIALS".

4. WELDS SHALL CONSIST OF A 6" BEAD AT 18" C-C (12" BETWEEN WELDS).

5. LENGTH OF PILE CAP AS SHOWN ON PLANS.

6. ALL WELDS AROUND PRECAST RCB TO BE CONTINUOUS TO INSURE A

WATERTIGHT SEAL.

7. PILE CAP TO BE WELDED TO PLATE CAST INTO RCB.

13.05'

8" x 12" GALVANIZED PLATE CAST INTO

STRUCTURE. (TYP. BOTH SIDES)

REFER TO DETAIL

1' 0"

TONGUE AND GROOVE JOINT

(SEE IOWA DOT SPECIFICATIONS

SHEET 10)

WELD TRIMMED SHEET PILE TO GALVANIZED PLATE

CONTINUOUS AND WATERTIGHT ALONG SIDES OF

PRE-CAST BOX

8" x 12" CONTINUOUS PILE CAP

SZ-22 SHEET PILE OR APPROVED

EQUAL

8" X 12" PLATE

WELD 38" X 12" PLATE TO SHEETING

USING 6" BEADS EVERY 18" O.C.

MINIMUM. (12' BETWEEN WELDS)

AT INTERSECTION BETWEEN PLATES,

CONTRACTOR SHALL WELD

CONTINUOUSLY ALL CONTACT POINTS

8" X 12" PLATE

WELD 38" X 12" PLATE TO SHEETING

USING 6" BEADS EVERY 18" O.C.

MINIMUM. (12' BETWEEN WELDS)

1' 0" UNIFORM WIDTH

ALONG ENTIRE

WALL LENGTH

(SEE NOTE)

8" X 12" PLATE

NOTE:

1. 12" x 38" PLATE (PILE CAP) SHALL REMAIN UNIFORM

ALONG ENTIRE LENGTH OF WALL. SHEETING WIDTH

MAY VARY UNDER PILE CAP BUT SHALL NOT EXTEND

BEYOND EDGE OF PLATE. CONTRACTOR SHALL USE

EQUIPMENT TO…

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File details come from the government source that posted it. Updated Jul 15, 2025.