2-25-17_EMM1003114B Final Plans 04-23-2025.pdf

PDF 6 MB Posted Nov 11, 2025

Attached to: Emm1003114B
Solicitation number: 009-RFB-WRBWL-CY25-17
Issued by: Dubuque County, Iowa

About this file

Written by GovTribe AI · Dec 8, 2025

This is a final construction plan document prepared by Ducks Unlimited, Inc. in cooperation with the Iowa Department of Agriculture and Land Stewardship and the United States Department of Agriculture for a constructed wetland nutrient removal project in Emmet County, Iowa (Project No. EMM1003114B). The project involves comprehensive environmental infrastructure development on approximately 17.3 acres, including site stripping, excavation, embankment construction, steel sheet piling installation, tile drainage system investigation and installation, water control structure placement, riprap application, concrete grouting, and seeding activities. Estimated quantities include 979 cubic yards of general excavation, 2,511 cubic yards of earthfill across multiple categories, 2,172 square feet of steel sheet piling, 378 linear feet of drainage tile installation, 672 tons of riprap (Iowa DOT Class E), 2,483 cubic yards of topsoil placement, and seeding across 17.3 acres. The project is designed to create an 8.2-acre wetland pool at normal water level elevation of 1,202.20 feet with a maximum depth of 3.10 feet, serving a contributing watershed area of 1,557.15 acres. The plans include 23 primary bid items with detailed specifications referencing Iowa NRCS standards and include provisions for a water control structure from Wisconsin Flowgate, aluminum components, corrugated metal pipe conduits, and geotextile materials.

The plans were finalized on April 23, 2025, and are sealed by licensed Professional Engineer Andrew Schippers (P.E. License No. P26317, renewal date December 31, 2025), with sheets C001 through C401 covered under the professional seal. Construction site safety responsibility rests solely with the contractor, and all work must comply with applicable federal, state, and local laws and ordinances. The project includes topographic survey data with horizontal and vertical control points established via RTK GPS survey conducted March 27, 2023, using NAVD88 vertical datum and Iowa State Plane North Zone 1402 coordinates. Contractors are required to notify Iowa One Call at least 48 hours prior to excavation and must follow specific environmental protection protocols, including a 660-foot buffer zone for existing eagle nests and seasonal tree removal restrictions (October 1 through March 31) to protect threatened or endangered bat species. The document explicitly states that the USDA, Iowa Department of Agriculture and Land Stewardship, and Ducks Unlimited do not guarantee the wetland will fill or remain filled with water to the principal crest elevation.

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Other files

File	Type	Posted
3-25-17_EMM1003114B Specifications 04-23-2025.pdf	PDF	Nov 11, 2025
5-25-17_EMM1003114B DNR-Neary H&H Report 01-22-25.pdf	PDF	Nov 11, 2025
0-25-17_Emm1003114B_IMPACS_2025 Wetland_bid_book.pdf	PDF	Nov 11, 2025
1352741-event.pdf	PDF	Nov 11, 2025
6-25-17_EMM1003114B_Schedule of Prices WORKSHEET.pdf	PDF	Nov 11, 2025
1-25-17_Emm1003114B_Notice-to-Bidders.pdf	PDF	Nov 11, 2025
8-25-17_EMM1003114B_Performance_Bond_UPLOAD.pdf	PDF	Nov 11, 2025
4-25-17_EMM1003114B DNR-Neary Wetland Inspection Plan 01-31-25.pdf	PDF	Nov 11, 2025
7-25-17_EMM1003114B_Proposal-Acknowledgement-Affidavit_UPLOAD.pdf	PDF	Nov 11, 2025

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H A

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120TH ST

H A

V E

110TH ST

500TH ST

ARMSTRONG, IA

H W

A Y

IOWA

LAKE

OKAMANPEEDAN LAKE

DOLLIVER, IA

HIGHWAY 9

130TH ST

HIGHWAY 9

460TH ST

100TH ST

H A

V E

150TH ST

PROJECT LOCATION

PROJECT NO. EMM1003114B

CONSTRUCTED WETLAND FOR NUTRIENT REMOVAL

EMMET COUNTY

S14, T100N, R31W

IOWA

IN COOPERATION WITH

IOWA DEPARTMENT OF AGRICULTURE AND LAND STEWARDSHIP

& UNITED STATES DEPARTMENT OF AGRICULTURE

IOWA ENGINEERING JOB CLASS V

PROJECT LOCATION

Know what's below.

Call before you dig.

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PROJECT LOCATION MAP

SCALE: 1" = 5000'

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.

To the best of my professional knowledge, judgement, and belief, these plans meet applicable NRCS Standards

Date

License No:

License renewal date:

Pages of sheets covered by this seal: 1 - 16 (C001 - C401)

December 31, 2025 P26317

Andrew Schippers, P.E.

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SHEET INDEX

SHEET NUMBER SHEET TITLE

C001 COVER SHEET

C002 SPECIFICATIONS, QUANTITIES, & NOTES

C051 TOPOGRAPHY & EXISTING CONDITIONS

C052 ENLARGED TOPOGRAPHY & EXISTING

CONDITIONS

C101 SITE PLAN

C102 ENLARGED SITE PLAN

C201 EMBANKMENT PLAN & PROFILE

C202 WETLAND PROFILES

C203 SEDIMENT BASIN PLAN & PROFILE

C204 TILE #1 PLAN & PROFILE

C301 SHEET PILE DETAILS

C302 CONSTRUCTION DETAILS

C303 WATER CONTROL STRUCTURE DETAILS 1

C304 WATER CONTROL STRUCTURE DETAILS 2

C305 FILTER DIAPHRAGM DETAILS

C401 SEEDING PLAN

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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DRAWN BY:

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REVIEWER:

DATE:

PROJECT NUMBER:

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C001

4-23-2025

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ESTIMATED QUANTITIES

NOTE # BID ITEM # SPEC # DESCRIPTION QUANTITY UNIT

1 1 IA CS-001 STRIPPING LS 1

2 2 IA CS-001 CROP DAMAGE AC 0

3 3 IA CS-006 STRUCTURE SEEDING AC 0.5

4 4 IA CS-006 BUFFER SEEDING AC 16.8

5 5 CS-008 MOBILIZATION & DEMOBILIZATION LS 1

6 6 IA CS-009 DRAINAGE TILE INVESTIGATION LS 1

7 7 IA CS-013 STEEL SHEET PILING SF 2,172

8 8 IA CS-021 EXCAVATION (GENERAL) CY-P 979

9 9 IA CS-023 EARTHFILL (GENERAL) CY-P 1,348

10 10 IA CS-023 EARTHFILL (GENERAL DAM) CY-P 337

11 11 IA CS-023 EARTHFILL (DAM CORE) CY-P 826

12 12 IA CS-024 DRAINFILL (SAND) TN 60

13 13 IA CS-026 TOPSOIL PLACEMENT CY-P 2,483

14 14 IA CS-046 TOE DRAIN (6"Ø PERFORATED CPP) LF 104

15 15 IA CS-046 12"Ø HDPE DUAL-WALL LF 151

16 16 IA CS-051 ALUMINUM WATER CONTROL STRUCTURE (WCS) LS 1

17 17 IA CS-051 ALUMINUM CMP DRAWDOWN PIPE LF 123

18 18 IA CS-046,

IA CS-081 STOPLOG STORAGE STRUCTURE LS 1

19 19 IA CS-051 CMP OUTLET - 8"Ø LF 40

20 20 IA CS-051 CMP OUTLET - 15"Ø LF 20

21 21 IA CS-061 RIPRAP (IA DOT CLASS E) TN 672

22 22 IA CS-062 CONCRETE GROUT CY 118

23 23 IA CS-051 36" ALUMINUM CMP RISER INLET LS 1

CONSTRUCTION NOTES:

1. BID ITEM FOR STRIPPING SHALL INCLUDE REMOVAL OF THE FIRST 12" OF TOPSOIL MATERIAL BELOW THE

BERM, SUBMERGED BERMS, SEDIMENTATION BASIN, CHANNEL FILL AREA, AND TILE COVER AREA (ESTIMATED STRIPPING QUANTITY IS 1,993 C.Y.). THIS MATERIAL SHALL BE STOCKPILED ON-SITE FOR RESPREAD, WHICH IS INCLUDED IN A SEPARATE BID ITEM. DNR HAS ALREADY CUT DOWN TREES TO WAIST HEIGHT WITHIN THE FOOTPRINT OF THE STRUCTURES AND WITHIN 25 FEET OF THE STRUCTURES. CONTRACTOR SHALL MOVE CUT DOWN TREES/BRUSH AND STOCKPILE ON-SITE TO BURN OR REMOVE. CONTRACTOR SHALL FINISH CUTTING

DOWN STUMPS TO GROUND LEVEL AND GRUB STUMPS IN ACCORDANCE WITH SPECIFICATIONS.

2. CROP DAMAGES WILL BE A PASS-THROUGH COST BY THE CONTRACTOR TO THE LANDOWNER. ENGINEER WILL

MEASURE THIS AREA AND IDALS WILL AGREE WITH THE LANDOWNER ON A UNIT COST DURING

CONSTRUCTION. BID ITEM FOR CROP DAMAGE SHALL INCLUDE AREA OF CROPS DAMAGED, AS NECESSARY, IN ORDER TO COMPLETE THE WORK AS DETAILED. CONTRACTOR SHALL MINIMIZE CROP DAMAGE AS MUCH AS

POSSIBLE DURING CONSTRUCTION ACTIVITIES.

3. BID ITEM FOR STRUCTURE SEEDING SHALL CONSIST OF SEEDING, MULCHING, AND FERTILIZING ALL STRUCTURES, EMBANKMENTS, AND ALL OTHER DISTURBED AREAS (OUTSIDE OF POOL AREA), AS INDICATED ON THE DRAWINGS OR OTHERWISE DESIGNATED. SEED MIX SHALL BE APPROVED BY ENGINEER AT LEAST 2

WEEKS BEFORE PLANNED SEEDING.

4. BID ITEM FOR BUFFER SEEDING SHALL CONSIST OF SEEDING THE AREAS DESIGNATED ON THE PLANS AS BUFFER SEEDING AND INCLUDE BORROW AREAS, DISTURBED AREAS NOT SEEDED AS PART OF STRUCTURAL SEEDING, AND OTHER AREAS WITHIN THE EASEMENT. SEED MIX SHALL BE APPROVED BY ENGINEER AT LEAST 2

WEEKS BEFORE PLANNED SEEDING.

5. BID ITEM FOR MOBILIZATION & DEMOBILIZATION SHALL INCLUDE THE SUPPLY OF ALL LABOR, MATERIAL AND EQUIPMENT TO TRANSPORT ALL NEEDED LABOR, MATERIAL AND EQUIPMENT, TO AND FROM THE PROJECT SITE, TO SUCCESSFULLY COMPLETE THE PROJECT AS SHOWN ON THE PLANS. ANY ADDITIONAL MOBILIZATION OF MANPOWER, EQUIPMENT, OR MATERIALS REQUIRED TO COMPLETE THE PROJECT SHALL BE PROVIDED BY THE

CONTRACTOR AT NO ADDITIONAL EXPENSE.

6. BID ITEM FOR DRAINAGE TILE INVESTIGATION SHALL CONSIST OF INVESTIGATION, LOCATION, REPAIR, REMOVAL AND/OR CAPPING/PLUGGING OF SUBSURFACE DRAINS (TILE) IN WETLAND RESTORATION AREA, ENHANCEMENT, OR CREATION PROJECT AREAS, OR OTHER SITUATIONS WHERE SUBSURFACE DRAINS MAY BE PRESENT. THIS BID ITEM DOES NOT INCLUDE INSTALLATION OF NEW TILE, WHICH IS INCLUDED IN SEPARATE

LINE ITEMS.

7. BID ITEM FOR STEEL SHEET PILING SHALL CONSIST OF FURNISHING AND DRIVING THE SPECIFIED SHEET PILING AT THE LOCATION SHOWN ON THE DRAWINGS. THIS BID ITEM SHALL INCLUDE SHEET PILING CAP AND ALL OTHER LABOR AND MATERIALS NECESSARY TO PROVIDE A COMPLETE INSTALLATION. SHOP DRAWINGS

SHALL BE REQUIRED FOR SHEET PILE STRUCTURE.

8. BID ITEM FOR EXCAVATION (GENERAL) SHALL CONSIST OF EXCAVATION AND GRADING OF MATERIAL NEEDED FOR THE BERM CORE TRENCH, SEDIMENTATION BASIN, AND INLET/OUTLET CHANNELS. IT IS ESTIMATED THAT

490 C.Y. WILL BE UTILIZED AS GENERAL FILL AND 489 C.Y. WILL BE SPOILED.

9. BID ITEM FOR EARTHFILL (GENERAL) SHALL CONSIST OF THE EARTHFILL NECESSARY TO CONSTRUCT THE SUBMERGED BERMS, CHANNEL FILL AND ADDITIONAL FILL TO BE PLACED OVER THE TILE TO PROVIDE ADEQUATE COVER. COHESIVE MATERIAL FOUND DURING GENERAL EXCAVATION CAN BE USED FOR THESE AREAS. SAND AND GRAVEL FOUND ON SITE SHALL NOT BE USED FOR THIS EARTHFILL. IT IS ESTIMATED THAT 858 C.Y. OF GENERAL FILL MATERIAL WILL NEED TO BE EXCAVATED FROM THE BORROW AREA FOR THE

GENERAL EARTHFILL.

10. BID ITEM FOR EARTHFILL (GENERAL DAM) SHALL CONSIST OF EXCAVATING, PLACING AND COMPACTING EARTHFILL NECESSARY TO CONSTRUCT THE PORTION OF THE EMBANKMENT THAT IS NOT CONSIDERED PART OF THE EMBANKMENT CORE. COHESIVE MATERIAL FOUND DURING GENERAL EXCAVATION CAN BE USED FOR THIS AREA. SAND AND GRAVEL FOUND ON SITE SHALL NOT BE USED FOR FILL FOR THIS ITEM. IT IS ESTIMATED THAT 337 C.Y. OF GENERAL FILL MATERIAL WILL NEED TO BE EXCAVATED FROM THE BORROW AREA FOR

GENERAL (DAM) CONSTRUCTION.

11. BID ITEM FOR EARTHFILL (DAM CORE) SHALL CONSIST OF EXCAVATING, PLACING AND COMPACTING EARTHFILL NECESSARY TO CONSTRUCT THE PORTION OF THE EMBANKMENT DESIGNATED THE EMBANKEMENT CORE, INCLUDING THE CORE TRENCH. COHESIVE MATERIAL TAKEN FROM THE DESIGNATED BORROW AREA SHOULD BE USED FOR THIS AREA (ESTIMATED 826 C.Y.). ESTIMATED PLAN VALUE INCLUDES 25% SHRINKAGE FACTOR.

12. BID ITEM FOR DRAINFILL (SAND) SHALL CONSIST OF FURNISHING AND PLACING DRAINFILL REQUIRED IN THE CONSTRUCTION OF STRUCTURE DRAINAGE SYSTEMS AND FILTER DIAPHRAGMS AROUND CONDUITS. THIS ITEM WILL CONSIST OF THE EXCAVATION NECESSARY TO CONSTRUCT THE TOE DRAINS, INCLUDING BACKFILL WITH MATERIAL MEETING THE REQUIREMENTS OF FINE DRAINFILL. GRADATIONS SHALL BE PROVIDED TO ENGINEER

PRIOR TO ARRIVING ON-SITE.

13. BID ITEM FOR TOPSOIL PLACEMENT SHALL CONSIST OF SPREADING SALVAGED AND STOCKPILED TOPSOIL AS THE SURFACE LAYER OF ALL EXCAVATIONS AND EARTHFILLS THAT WILL BE SEEDED. TOPSOIL SHALL BE PLACED AS THE FINAL LIFT. AREAS TO RECEIVE A MINIMUM OF 6" LAYER OF TOPSOIL INCLUDE AREAS OF THE EMBANKMENT THAT DO NOT HAVE RIPRAP, BORROW AREA, AND ADDITIONAL FILL PLACED OVER NEW TILE. FOR THIS QUANTITY, 2,052 C.Y. IS PLANNED TO BE RE-SPREAD OUTSIDE OF POOL AREA WITHIN EASEMENT, WHILE 431 C.Y. IS PLANNED TO UTILIZED AS THE FINAL 6" LIFT FOR THE BERMS AND TILE COVER..

14. BID ITEM FOR TOE DRAIN (6"Ø PERFORATED CPP) SHALL CONSIST OF FURNISHING AND INSTALLING 6-INCH PERFORATED CORRUGATED POLYETHYLENE TUBING (SINGLE WALL) USED AS A DRAIN TILE FOR THE TOE DRAIN AS SHOWN ON THE DRAWINGS. SAND BACKFILL AROUND THE TILE SHALL BE PAID UNDER A SEPARATE BID ITEM. 20' LENGTHS OF 8"Ø GALVANIZED CMP SHALL BE UTILIZED AT THE EXPOSED OUTLETS OF THE TOE DRAIN TILE (TWO LOCATIONS). THE METAL OUTLET SHALL BE PAID UNDER A SEPARATE BID ITEM.

15. BID ITEM FOR 12"Ø HDPE DUAL-WALL SHALL CONSIST OF FURNISHING AND INSTALLING 12-INCH, NON-PERFORATED, HDPE, DUAL-WALL CORRUGATED POLYETHYLENE TUBING USED AS A DRAIN TILE AS SHOWN ON THE DRAWINGS. MEASUREMENT AND PAYMENT FOR 12-INCH NON-PERFORATED DUAL-WALL POLYETHYLENE TUBING SHALL BE ON AN INSTALLED LINEAR FOOT BASIS, AND SHALL INCLUDE ALL NECESSARY FITTINGS AND ADAPTERS. A 20' LENGTH OF 15"Ø GALVANIZED CMP SHALL BE UTILIZED AT THE EXPOSED OUTLET OF THE TILE

(ONE LOCATION). THE METAL OUTLET SHALL BE PAID UNDER A SEPARATE BID ITEM.

16. BID ITEM FOR ALUMINUM WATER CONTROL STRUCTURE SHALL CONSIST OF PROVIDING AND INSTALLING THE ALUMINUM DRAW DOWN STRUCTURE, STOP LOGS, AND CONCRETE BASE AS SHOWN ON THE DRAWINGS AND DETAIL SHEETS. THE WCS SHALL BE FROM WISCONSIN FLOWGATE, OR APPROVED EQUAL. SHOP DRAWINGS

SHALL BE APPROVED BY ENGINEER PRIOR TO FABRICATION.

17. BID ITEM FOR ALUMINUM CMP DRAWDOWN PIPE SHALL CONSIST OF PROVIDING AND INSTALLING THE 15-INCH

DIAMETER CMP INLET AND OUTLET PIPES AS SHOWN ON THE DRAWINGS.

18. THE BID ITEM FOR STOPLOG STORAGE BOX SHALL INCLUDE ALL LABOR AND MATERIALS TO PROVIDE THE STOPLOG STORAGE BOX, AS DETAILED IN THE PLANS. EXACT LOCATION SHALL BE DETERMINED IN THE FIELD

WITH APPROVAL FROM ENGINEER.

19. BID ITEM FOR CMP OUTLET 8"Ø SHALL CONSIST OF FURNISHING AND INSTALLING THE 8"Ø CMP AND FITTINGS SHOWN ON THE PLANS FOR THE TOE DRAIN OUTLETS (2 LOCATIONS), INCLUDING ANIMAL GUARD AT OUTLET END

OF PIPE.

20. BID ITEM FOR CMP OUTLET - 15"Ø SHALL CONSIST OF FURNISHING AND INSTALLING THE 15"Ø CMP AND FITTINGS SHOWN ON THE PLANS FOR TILE OUTLETS, INCLUDING ANIMAL GUARD AT OUTLET END OF PIPE.

21. BID ITEM FOR RIPRAP (IA DOT CLASS E) SHALL CONSIST OF FURNISHING AND PLACING THE ROCK RIPRAP IN THE LOCATIONS AS SHOWN ON THE DRAWINGS. ROCK SHALL BE CLASS E REVETMENT STONE AS DEFINED BY IOWA DEPARTMENT OF TRANSPORTATION. NON-WOVEN FILTER FABRIC IS REQUIRED BENEATH ALL ROCK/RIPRAP AND SHALL BE SECURED TO SLOPES AND BOTTOM, USING PINS, AS NOTED IN THE SPECIFICATIONS. QUANTITY IS BASED ON TONS. CONTRACTOR SHALL PROVIDE SCALE TICKETS WITH WEIGHTS INCLUDING TARE WEIGHTS, GROSS WEIGHTS, AND NET WEIGHTS OF MATERIAL DELIVERED. CONTRACTOR

SHALL PROVIDE GRADATIONS TO ENGINEER PRIOR TO RIPRAP ARRIVING ON-SITE.

22. BID ITEM FOR CONCRETE GROUT SHALL CONSIST OF FURNISHING AND PLACING CONCRETE GROUT ON THOSE PORTIONS OF THE RIPRAP SHOWN ON THE DRAWINGS. GROUT FILL QUANTITY IS BASED ON AN APPLICATION RATE OF 0.6FT3/FT2 OF RIPRAP. WHITE PIGMENTED CURE SHALL BE APPLIED AND IS INCIDENTAL TO THIS BID

ITEM.

23. BID ITEM FOR 36"Ø ALUMINUM CMP RISER INLET SHALL CONSIST OF PROVIDING AND INSTALLING THE 36-INCH DIAMETER CMP RISER IN WETLAND AS SHOWN ON THE DRAWINGS. SHOP DRAWINGS SHALL BE APPROVED BY

ENGINEER PRIOR TO FABRICATION.

24. DEWATERING AND WATER MAINTENANCE IS THE CONTRACTOR'S RESPONSIBILITY, AND IS CONSIDERED

INCIDENTAL TO THE PROJECT.

NRCS SPECIFICATIONS:

IA CS-001 SITE PREPARATION

IA CS-005 POLLUTION CONTROL

IA CS-006 SEEDING AND MULCHING FOR PROTECTIVE COVER

CS-008 MOBILIZATION & DEMOBILIZATION

IA CS-009 SUBSURFACE DRAIN INVESTIGATION, REMOVAL, AND REPAIR

IA CS-011 REMOVAL OF WATER

IA CS-013 SHEET PILING

IA CS-021 EXCAVATION

IA CS-023 EARTHFILL

IA CS-024 DRAINFILL (SAND)

IA CS-026 TOPSOILING

IA CS-031 CONCRETE

IA CS-046 TILE DRAINS FOR LAND DRAINAGE

IA CS-051 CORRUGATED METAL PIPE CONDUITS

IA CS-061 LOOSE ROCK RIPRAP

IA CS-062 CONCRETE GROUT FOR RIPRAP

IA CS-081 METAL FABRICATION AND INSTALLATION

IA CS-095 GEOTEXTILE

ADDITIONAL NOTES:

1. THE PROJECT SPECIFICATIONS AS PREPARED BY IOWA DEPARTMENT OF AGRICULTURE AND LAND

STEWARDSHIP AND DUCKS UNLIMITED, INC. SHALL BE CONSIDERED AS PART OF THIS DOCUMENT.

THE NATURAL RESOURCES CONSERVATION SERVICE CONSTRUCTION SPECIFICATIONS SHALL ALSO

APPLY.

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

THE CONSTRUCTION OF THIS PROJECT.

3. USDA, IDALS, AND DU DO NOT GUARANTEE THE WETLAND WILL FILL OR REMAIN FILLED WITH WATER

TO THE PRINCIPAL CREST ELEVATION.

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

ENGINEER AND IDALS.

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

MATERIALS, AS REQUESTED BY THE ENGINEER.

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

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

INDENTIFIED UNDER THE FEDERAL ENDANGERED SPECIES ACT, OR WILL DESTROY OR ADVERSELY MODIFY THE CRITCIAL 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.

7. 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.

G R

A N

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N A L

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3-w w w .d uc ks

.o rg

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

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P M

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S pe cs

N ot es

N on e

CAD FILE:

DRAWN BY:

SURVEYED BY:

REVIEWER:

DATE:

PROJECT NUMBER:

R ev is io ns D at e

B y

R ev is io n S he et

C002

4-23-2025

AS, AB

CK, WAJ

IA-340-13 Cover & Specs

C T

N O

C O

U N

W A

O N

Q U

A N

US-IA-340-13

-1

-C

A L

A N

W .A

A .S

-2

1- C

N S

A .S

-2

1- C

N S

CP 1

SET CAPPED REBAR (RTK)

N: 4005349.24 E: 4660587.69

ELEV: 1251.05 (NAVD88)

CP 2

SET CAPPED REBAR (RTK)

N: 4004393.12 E: 4663186.65

ELEV: 1227.17 (NAVD88)

CP 3

SET CAPPED REBAR (RTK)

N: 4007106.35 E: 4665803.98

ELEV: 1216.44 (NAVD88)

15 12

12251230

570TH AVE

H S

560TH AVE

H S

0T H

S T

121012

EX. 100-YEAR HWL ELEV. = 1203.80

March 27, 2023

US-IA-340-13, NEARY

HORIZONTAL CONTROL

Coordinates are NAD 83 (2011), Iowa State Plane North Zone 1402, and units of measurement are in U.S. Survey Feet. Raw data was collected for 9 hours and 53 minutes on March 27, 2023 using a Trimble R12 GPS base receiver. Coordinates were initially established from an autonomous survey, and post-processed with the NGS OPUS (National Geodetic Survey, Online Positioning User Service) solution for the occupied Control Point 01.

VERTICAL CONTROL

Elevations were established from the OPUS solution for Control Point 01 using (GEOID18) CONUS file, elevation 1251.047 on the NAVD 88.

CONTROL POINT DATA

POINT #

ELEVATION

1251.047

1227.167

NORTH

4005349.237

4004393.118

EAST

4660587.693

4663186.653

DESCRIPTION

SET CAPPED REBAR

N O

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A R E

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T H

E D

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

M P

D O

C U

T A N

D I

N C

D E

N O

O N

B Y"

F O

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

N O

T F

O R

C O

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T R

U C

GRAPHIC SCALE

1 inch = feet300

300 0 150 300 600 1200

NEARY FAMILY FARMS LLC

ROGER SCHWIEGER

DUIN FAMILY

LIMITED PARTNER

CYNTHIA J CELANDER

ROGER LINDELLSTATE OF IOWA

12"Ø CONCRETE TILE

INV. ELEV. 1204.84

10"Ø CMP TILE OUTLET

TOP ELEV. 1201.90

6"Ø HDPE TILE OUTLET TOP ELEV. 1217.73

TEST PIT #3

TEST PIT #2

TEST PIT #1

TEST PIT #4

4" Ø CLAY TILE

NOTE: A LOT OF FALL ON

THIS LINE PER TILE INSTALLER

6"Ø CLAY TILE

TOP ELEV. 1213.73

7"Ø CONCRETE TILE

TOP ELEV. 1208.61

12"Ø CONCRETE TILE

TOP ELEV. 1205.80

5"Ø CONCRETE TILE

TOP ELEV. 1207.22

15"Ø RCP TILE

TOP ELEV. 1206.78

12"Ø CONCRETE TILE

TOP ELEV. 1209.78

5"Ø HDPE TILE OUTLET

TOP ELEV. 1204.29

5"Ø CONCRETE TILE

TOP ELEV. 1209.56

5"Ø CONCRETE TILE

TOP ELEV. 1212.97

10"Ø CONCRETE TILE

TOP ELEV. 1209.16

6"Ø CMP TILE OUTLET

INVERT ELEV. 1203.62

5"Ø CONCRETE TILE

TOP ELEV. 1204.82

5"Ø CONCRETE TILE

TOP ELEV. 1204.87

12"Ø HDPE TILE

INV. ELEV. 1208.19

36"Ø RCP INV. ELEV.

1213.68 (W. SIDE)

36"Ø RCP INV. ELEV.

1211.58 (E. SIDE)

12"Ø CMP THRU WEIR

(DETERIORATED) TOP ELEV. 1213.05

EXISTING CONCRETE WEIR

STRUCTURE CREST ELEV. ~1214.22

18"Ø CMP TILE OUTLET

INV. ELEV. 1204.59

3 1216.437 4007106.347 4665803.978 SET CAPPED REBAR

IOWA LAKE

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 POLE

UNDERGROUND ELECTRIC

EDGE OF CATAILS

OUTSIDE EDGE

OF CATAILS

MHSTORM TILE

SB 1

FENCE POST

M A N

B O

V A R D

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3-w w w .d uc ks

.o rg

G R

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N A L

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

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D oc um en ts

\I ow a\

_C 3D

P ro je ct s\

-3

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\E M

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C 3D

_D R A W

\I A -3

-1

To po S ur ve y.

dw g, /2 3/

A nd re w

S ch ip pe rs

To po

N on e

CAD FILE:

DRAWN BY:

SURVEYED BY:

REVIEWER:

DATE:

PROJECT NUMBER:

R ev is io ns D at e

B y

R ev is io n S he et

C051

4-23-2025

AS, AB

CK, WAJ

IA-340-13 Topo Survey

C T

N O

C O

U N

W A

G R A

E X

G C

O N

US-IA-340-13

-1

-C

A L

A N

W .A

A .S

-2

1- C

N S

A .S

-2

1- C

N S

AutoCAD SHX Text

TEST PIT SOIL DATA

AutoCAD SHX Text

LOCATION

AutoCAD SHX Text

TEST PIT #1

AutoCAD SHX Text

TEST PIT #2

AutoCAD SHX Text

TEST PIT #3

AutoCAD SHX Text

TEST PIT #4

AutoCAD SHX Text

TOP

AutoCAD SHX Text

24" TOPSOIL

AutoCAD SHX Text

24" TOPSOIL

AutoCAD SHX Text

12" TOPSOIL (SANDY)

AutoCAD SHX Text

24" TOPSOIL

AutoCAD SHX Text

ELEV. RANGE

AutoCAD SHX Text 1214.89-1216.89

AutoCAD SHX Text 1217.68-1219.68

AutoCAD SHX Text 1212.15-1213.15

AutoCAD SHX Text 1206.50-1208.50

AutoCAD SHX Text

BOTTOM

AutoCAD SHX Text

BROWN/GRAY SANDY CLAY MIX

AutoCAD SHX Text

BROWN SANDY CLAY (DRY)

AutoCAD SHX Text

SANDY BROWN CLAY (DRY)

AutoCAD SHX Text

SANDY BROWN CLAY (DRY)

AutoCAD SHX Text

ELEV. RANGE

AutoCAD SHX Text 1210.71-1214.89

AutoCAD SHX Text 1212.82-1217.68

AutoCAD SHX Text 1206.68-1212.15

AutoCAD SHX Text 1202.50-1206.50

AutoCAD SHX Text

041205

12061207

12231224

1208 1207

18 12 17 12

16 12

13 12

14 12

1209 1210

1213 1212

1211 1210 12

1208 12

05 12

03 12

0812071206 12041203

23 1224

1200 1201

01 12

EX. 100-YEAR HWL ELEV. = 1203.80

CP2

SET CAPPED REBAR (RTK)

N: 4004393.12 E: 4663186.65

ELEV: 1227.17 (NAVD88)

N O

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P R O

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T, L

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D S C A

A R C H

T O

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U R V

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M I

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W A Y.

I F

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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

M P

D O

C U

T A N

D I

N C

D E

N O

O N

B Y"

F O

B Y

R S

R E, T H

E D

O F

S U

C H

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A N

D A

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T R

U C

GRAPHIC SCALE

1 inch = feet80

80 0 40 80 160 320

NEARY FAMILY FARMS LLC

STATE OF IOWA

12"Ø RCP TILE

INV. ELEV. 1204.84

6"Ø HDPE TILE OUTLET TOP ELEV. 1217.73'

TEST PIT #3

TEST PIT #2

TEST PIT #1

TEST PIT #4

6"Ø CLAY TILE

TOP ELEV. 1213.73

12"Ø CONCRETE TILE

TOP ELEV. 1205.80

5"Ø CONCRETE TILE

TOP ELEV. 1207.22

15"Ø RCP TILE

TOP ELEV. 1206.78

12"Ø CONCRETE TILE

TOP ELEV. 1209.78

5"Ø HDPE TILE OUTLET

INV ELEV. 1203.81

5"Ø CONCRETE TILE

TOP ELEV. 1209.56

5"Ø CONCRETE TILE

TOP ELEV. 1212.97

10"Ø CONCRETE TILE

TOP ELEV. 1209.16

6"Ø CMP TILE OUTLET

INVERT ELEV. 1203.62

10"Ø CMP TILE OUTLET

TOP ELEV. 1201.90

5"Ø CONCRETE TILE

TOP ELEV. 1204.87

18"Ø CMP TILE OUTLET

INV. ELEV. 1204.59

15"Ø CONCRETE TILE

INV ELEV. 1204.97

12"Ø HDPE TILE OUTLET AT

BEGINNING OF NEIGHBOR'S DITCH

TO EAST; INV. ELEV. 1208.19

36"Ø RCP INV. ELEV.

1213.68 (W. SIDE)

36"Ø RCP INV. ELEV.

1211.58 (E. SIDE)

12"Ø CMP THRU WEIR

(DETERIORATED) TOP

ELEV. 1213.05

EXISTING CONCRETE WEIR

STRUCTURE CREST ELEV. ~1214.22

FLOW

IOWA LAKE

M A N

B O

V A R D

B U

A N

3-w w w .d uc ks

.o rg

G R

A N

C R

N A L

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

-2 C

P R O

\E M

R Y\

C 3D

_D R A W

\I A -3

-1

To po S ur ve y.

dw g, /2 3/

A nd re w

S ch ip pe rs

En la rg ed

T op o, N on e

CAD FILE:

DRAWN BY:

SURVEYED BY:

REVIEWER:

DATE:

PROJECT NUMBER:

R ev is io ns D at e

B y

R ev is io n S he et

C052

4-23-2025

AS, AB

CK, WAJ

IA-340-13 Topo Survey

C T

N O

C O

U N

W A

R G

G R A

E X

G C O

N D

N S

US-IA-340-13

-1

-C

A L

A N

W .A

A .S

-2

1- C

N S

A .S

-2

1- C

N S

NWL 8.2 ACRES AT ELEV. = 1202.20

100-YEAR STORM ELEV. = 1208.00

48"Ø CMP WATER

CONTROL STRUCTURE

PROPOSED BERM TOP ELEV. = 1209.00;

90' WIDE SHEET PILE WEIR ELEV. = 1202.20;

20' X 86' STILLING BASIN AT ELEV. = 1198.20

SUBMERGED BERM TOP

ELEV. = 1201.70; 10'

WIDE TOP W/ 3:1 SIDE

SLOPES

TILE #1 - PROPOSED 12"Ø HDPE DUAL-WALL PIPE RE-ROUTE

(REPLACES EXISTING 10"Ø CONCRETE TILE)

CHANNEL GRADING DOWNSTREAM

OF STILLING BASIN TO MERGE

INTO EXISTING GRADE/CHANNEL

IOWA LAKE PARCEL BOUNDARY

APPROX. PARCEL BOUNDARY

100-YEAR STORM

ELEV. = 1208.00

NWL 8.2 ACRES AT

ELEV. = 1202.20

PROPOSED 50' x 100'

SEDIMENTATION BASIN

AND CHANNEL

(SEE SHEET C203)

FILL CHANNEL

BORROW AREA /

EXPAND POOL

APPROX. EASEMENT BOUNDARY

CONSTRUCTION ACCESS

CP 2

SET CAPPED REBAR (RTK)

N: 4004393.12 E: 4663186.65

ELEV: 1227.17 (NAVD88)

041205

12131214

12191221

12231224

27 12

1208 1207

12211222

17 12 16 12

13 12

09 12

14 12

1209 1210

12161206

05 12

12131212 1211121012

1208 12

12111210

1209 12101211

120812

12121

0812071206

12041203

231224

01 1

01 12

N O

C E:

C O

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U C

O N

E S A

S T

H E

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Y O

E C O

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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

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N S E

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A G

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H E

W O

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R B Y

U C

R O

F O

S O

N S O

N -S

M A

L, D

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D I

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I S T

H E

O F

D U

C K S U

I T

M A Y

N O

T B E

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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

O F

F O

R A

N Y

R S O

U N

S S T

A R E

A C

N G

U N

T H

E D

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

M P

D O

C U

T A N

D I

N C

D E

N O

O N

B Y"

F O

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

N O

T F

O R

C O

N S

T R

U C

GRAPHIC SCALE

1 inch = feet120

120 0 60 120 240 480

DESIGN CRITERIA

DESIGN CRITERIA VALUE UNIT REQUIREMENT/

NOTES

CONTRIBUTING SURFACE WATERSHED AREA 1,557.15 ACRES

CONTRIBUTING SUBSURFACE WATERSHED AREA 1,557.15 ACRES

POOL NORMAL WATER LEVEL (NWL) ELEVATION 1,202.20 FT.

DESIGNED WETLAND POOL AREA (@ NWL) 8.20 ACRES

PERCENT POOL AREA TO WATERSHED AREA 0.53 % >=0.50%

MAX. POOL DEPTH 3.10 FT.

AVG. POOL DEPTH 1.64 FT.

DEEP WATER AREA (DEPTH >3 FT) 0.008 ACRES <25%

PERCENT DEEP WATER TO POOL AREA 0.1 %

POOL STORAGE VOLUME AT NWL 13.433 ACRE-FT

BERM ELEVATION 1,209.00 FT.

POOL STORAGE VOLUME AT TOP OF BERM 116.061 ACRE-FT

MAX BERM HEIGHT (TO EXISTING GRADE) 9.00 FT.

AVG. BERM HEIGHT 2.30 FT. TO E.G.

BERM LENGTH 270 FT.

PRINCIPLE WEIR ELEVATION 1,202.20 FT.

PRINCIPLE WEIR LENGTH 90 FT.

10-YEAR STORM HWL IN POOL 1,205.76 FT.

10-YEAR PEAK INFLOW 1,519.86 CFS

10-YEAR PEAK OUTFLOW 1,335.18 CFS

25-YEAR STORM HWL IN POOL 1,206.63 FT.

25-YEAR PEAK INFLOW 2,069.53 CFS

25-YEAR PEAK OUTFLOW 1,829.75 CFS

100-YEAR STORM HWL IN POOL 1,208.00 FT.

100-YEAR PEAK INFLOW 3,113.12 CFS

100-YEAR PEAK OUTFLOW 2,781.19 CFS

FEMA 100-YEAR FLOOD ELEVATION (NAVD88) 1,203.80 FT. APPROXIMATE

WETLAND POOL CHARACTERISTICS

WETLAND

POOL

DEPTH

ELEV.

INCREMENTAL

AREA (AC)

CUMULATIVE

VOLUME

(ACRE-FT)

0.0 1200.0 1.684 -

1.0 1201.0 6.154 4.762

2.0 1202.0 7.956 11.817

2.2 1202.2 8.200 13.433

3.0 1203.0 9.499 20.512

4.0 1204.0 11.030 30.777

5.0 1205.0 13.737 43.160

6.0 1206.0 15.991 58.024

7.0 1207.0 18.042 75.041

8.0 1208.0 20.142 94.133

9.0 1209.0 23.715 116.061

G R

A N

C R

N A L

M A N

B O

V A R D

B U

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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

-2 C

P R O

\E M

R Y\

C 3D

_D R A W

\I A -3

-1

S ite

P la n.

dw g, /2 3/

A nd re w

S ch ip pe rs

S ite

P la n, N on e

CAD FILE:

DRAWN BY:

SURVEYED BY:

REVIEWER:

DATE:

PROJECT NUMBER:

R ev is io ns D at e

B y

R ev is io n S he et

C101

4-23-2025

AS, AB

CK, WAJ

IA-340-13 Site Plan

C T

N O

C O

U N

W A

A N

US-IA-340-13

-1

-C

A L

A N

W .A

A .S

-2

1- C

N S

A .S

-2

1- C

N S

SUBMERGED BERM TOP ELEV. = 1201.70;

10' WIDE TOP W/ 3:1 SIDE SLOPES

0+00

1+00

2+00

NWL 8.2 ACRES AT

ELEV. = 1202.20

100-YEAR STORM ELEV. = 1208.00

PROPOSED 15"Ø CMP OUTLET

INV. ELEV. =1203.20

TILE #1 - PROPOSED 12"Ø HDPE

DUAL-WALL INTERCEPT WITH EXISTING

10"Ø CONCRETE TILE AT INV. ELEV. =

1204.36; PROVIDE 3' MIN. COVER

GRADE DOWNSTREAM SIDE

BANKS/CHANNEL TO MERGE

INTO EXISTING GRADE

48"Ø ALUMINUM WCS

INV. = 1200.00

36"Ø ALUMINUM CMP SLOTTED

INTAKE RISER WITH MOUNDED

RIPRAP; RIM ELEV. = 1202.20

PROPOSED BERM TOP ELEV. = 1209.00;

12' WIDE TOP W/ 3:1 SIDE SLOPES; 10'

WIDE WAVE BERM ON UPSTREAM SIDE

90' WIDE CREST SHEET PILE

WEIR STRUCTURE ELEV. =

1202.20; TOP OF SIDEWALLS

1208.00

20' X 86' GROUTED RIPRAP STILLING

BASIN; BOTTOM ELEV. = 1198.20

BORROW AREA /

EXPAND POOL

(SEE NOTES THIS

SHEET)

NWL 8.2 ACRES AT

ELEV. = 1202.20

APPROX. PARCEL BOUNDARY

100-YEAR STORM ELEV. = 1208.00

EXCAVATE 50' X 100' SEDIMENTATION

BASIN AND CHANNEL TO DIRECT WATER

TOWARDS SOUTH END OF WETLAND

FILL CHANNEL

FROM BEND TO

WETLAND

(1205)

6+00

7+00

8+00

9+00

6" CPP TOE DRAIN

0+00

1+00

2+00

3+00

4+00

5+00

5+79

(1200)

(1200) (1200)

APPROX. EASEMENT BOUNDARY

0+00

1+00

2+00

3+00

4+00

5+00

6+00

7+00

8+00

8+82

WETLAND PROFILE #2

(SEE SHEET C202 FOR PROFILE)

WETLAND PROFILE #1

(SEE SHEET C202 FOR PROFILE)

6" CPP TOE DRAIN

(1200)

APPROX. EASEMENT BOUNDARY

0+00

CONSTRUCTION ACCESS

04120512061207

18 12

17 12 16 12

07 12

1209 1210

1213 1212

1211 1210

07 12

0812071206

(1205) (1204)

(1206)

IA DOT CLASS E RIPRAP AT 1.5' DEPTH

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O R K P

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H E

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F O

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N -S

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H E

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D U

C K S U

I T

M A Y

N O

T B E

U S

O R R

R O

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F O

R A

N Y

S E

H O

U T

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C O

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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

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A R R A N

F A N

Y K

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R A

N Y

U S E

O F

M A

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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

O F

F O

R A

N Y

R S O

U N

S S T

A R E

A C

N G

U N

T H

E D

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

M P

D O

C U

T A N

D I

N C

D E

N O

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B Y"

F O

B Y

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R E, T H

E D

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S U

C H

O N

A N

D A

C R

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E A

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N O

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C O

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T R

U C

GRAPHIC SCALE

1 inch = feet50

50 0 25 50 100 200

NOTE:

ALL OTHER TILE IN DITCH ON SHEETS C051 &

C052 ARE CURRENTLY OUTLETTING WITH INVERTS

AT LEAST 1.0' ABOVE THE PROPOSED NWL.

NOTES:

1. STRIP 12" - 24" TOP SOIL BEFORE OBTAINING BORROW

MATERIAL. BORROW AREA TO BE EXCAVATED TO

APPROXIMATELY 3.5' DEPTH AFTER TOPSOIL REMOVAL.

TOPSOIL TO BE PLACED BACK INTO EXCAVATED AREA

AND SPREAD OUT AT COMPLETION.

G R

A N

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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

-2 C

P R O

\E M

R Y\

C 3D

_D R A W

\I A -3

-1

S ite

P la n.

dw g, /2 3/

A nd re w

S ch ip pe rs

En la rg ed

S ite

P la n, N on e

CAD FILE:

DRAWN BY:

SURVEYED BY:

REVIEWER:

DATE:

PROJECT NUMBER:

R ev is io ns D at e

B y

R ev is io n S he et

C102

4-23-2025

AS, AB

CK, WAJ

IA-340-13 Site Plan

C T

N O

C O

U N

W A

R G

A N

US-IA-340-13

-1

-C

A L

A N

W .A

A .S

-2

1- C

N S

A .S

-2

1- C

N S

10'WIDE WAVE SHELF

PROPOSED BERM TOP

ELEV. = 1209.00; 12'

WIDE TOP W/ 3:1 SIDE

SLOPES

20' X 86' GROUTED

RIPRAP STILLING BASIN.

IA DOT CLASS E RIPRAP

AT 1.5' DEPTH OVER

GEOTEXTILE FABRIC.

GRADE OUTLET CHANNEL TO MERGE

WITH EXISTING TOPOGRAPHY

48"Ø ALUM. CMP WCS

INV. ELEV. = 1200.00

W/ 15"Ø ALUMINUM

DRAWDOWN PIPES

36"Ø SLOTTED CMP INTAKE RISER

RIM ELEV. = 1202.20

15"Ø CMP INV. ELEV. = 1200.00

15"Ø ALUMINUM DRAWDOWN

PIPE INV. = 1200.00

(PROVIDE RODENT GUARD)

90' WIDE CREST SHEET PILE

WEIR AT ELEV. = 1202.20

NWL 8.2 ACRES AT

ELEV. = 1202.20

100-YEAR STORM

ELEV. = 1208.00

(1209) (1208)

(1207)

(1206) (1205)

(1204) (1203)

(1209) (1205)

(1199) (1200)

1) (1

(1206) (1207) (1208) (1209)

(1209)

(1207)

(1202) (1201)

(1200)

(1207)

90.0'

6"Ø CPP, TOE DRAIN

INV. ELEV. = 1201.00

6"Ø CPP, TOE DRAIN

INV. ELEV. = 1201.10

6"Ø CPP, TOE DRAIN

INV. ELEV. = 1201.10

6"Ø CPP, TOE DRAIN

INV. ELEV. = 1201.00

15"Ø ALUM. CMP

22.5° BEND

FILTER DIAPHRAGM

(SEE SHEET C305)

12' DIA., IA DOT

CLASS E RIPRAP

0+00

1+00

2+00

2+07

2:1

3:1

2:1

C/L SHEET PILE ALIGNMENT

12'

(1200)

(1198.2)

1+00

' 78.0'

0+00

0+50

1+00

1+50

2+00

2+50

3+00

3+02

SETTLED BERM TOP

ELEV. = 1209.00

SETTLED BERM TOP

ELEV. = 1209.00

EXISTING GRADE

TOP OF SHEET PILE SIDEWALL

ELEV. = 1208.00

90.00' WEIR CREST

WEIR CREST ELEV. = 1202.20

STILLING BASIN DOWNSTREAM

SIDE BOTTOM ELEV. = 1198.20

CLAY CORE

STA = 2+51.54

ELEV = 1206.24

CLAY CORE

STA = 0+84.29

ELEV = 1203.57

PROPOSED CLAY CORE

BOTTOM OF SHEET PILE

ELEVATION = 1186.2'

0+00

0+50

1+00

1+50

2+00

2+07

WETLAND GRADING

ELEV. = 1200.0

5' WIDE GROUTED RIPRAP

SHEET PILE CENTERLINE

STA.: 0+68.34

WEIR ELEVATION = 1202.2'

STILLING BASIN

GROUTED RIPRAP

SHEET PILE DEPTH

ELEVATION = 1186.2'

FLOW

SETTLED BERM TOP

ELEV = 1209.00

(BEYOND)

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

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B U

T N

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T O

E A C C U

R A C Y

O F

M A

L, D

A N

D I

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O R I

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R A

N Y

U S E

O F

M A

L, D

A N

D I

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A T

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B Y

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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

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O R T

H E

S T

S A

O N

O F

F O

R A

N Y

R S O

U N

S S T

A R E

A C

N G

U N

T H

E D

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

M P

D O

C U

T A N

D I

N C

D E

N O

O N

B Y"

F O

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

N O

T F

O R

C O

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T R

U C

GRAPHIC SCALE

1 inch = feet20

20 0 10 20 30 60

EMBANKMENT & SHEET PILE WEIR PROFILE

(5:1 VERTICAL EXAGGERATION)

SCALE: 1" = 20'

EMBANKMENT PLAN

SHEET PILE CENTERLINE PROFILE

(1:1 VERTICAL EXAGGERATION)

SCALE: 1" = 20'

NOTE:

WHITE PIGMENTED CURE REQUIRED

ON ALL GROUTED RIPRAP.

NOTE:

CLAY CORE FROM STA: 0+84.29 TO STA: 2+51.54

NOTE:

BERM SHALL BE OVERBUILT BY 5%

(1209.5'), SO THAT THE SETTLED TOP OF

BERM WILL BE 1209.0'

NOTE:

BERM SHALL BE OVERBUILT BY 5%

(1209.5'), SO THAT THE SETTLED TOP OF

BERM WILL BE 1209.0'

NOTE:

BERM SHALL BE OVERBUILT BY 5%

(1209.5'), SO THAT THE SETTLED TOP OF

BERM WILL BE 1209.0'

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

-2 C

P R O

\E M

R Y\

C 3D

_D R A W

\I A -3

-1

S ite

P la n.

dw g, /2 3/

A nd re w

S ch ip pe rs

B A N

K M

A N

R O

N on e

CAD FILE:

DRAWN BY:

SURVEYED BY:

REVIEWER:

DATE:

PROJECT NUMBER:

R ev is io ns D at e

B y

R ev is io n S he et

C201

4-23-2025

AS, AB

CK, WAJ

IA-340-13 Site Plan

C T

N O

C O

U N

W A

B A N

K M

A N

R O

US-IA-340-13

-1

-C

A L

A N

W .A

A .S

-2

1- C

N S

A .S

-2

1- C

N S

NWL ELEV. = 1202.2

EXISTING GRADE

0+00

0+50

1+00

1+50

2+00

2+50

3+00

3+50

4+00

4+50

5+00

5+50

6+00

6+50

7+00

7+50

8+00

8+50

9+00

9+50

10+00

10+23

PROPOSED STILLING BASIN

BOTTOM ELEV. = 1198.20

PROPOSED BERM AT

SHEET PILE WEIR

CREST ELEV. = 1202.20

STA = 1+81.64

ELEV = 1200.02 STA = 0+24.68

ELEV = 1199.50

STA = 1+38.16

ELEV = 1198.20

EXISTING GRADE

PROPOSED GRADE

STA = 10+10.13

ELEV = 1207.00

PROPOSED 12"Ø HDPE

DUAL-WALL PIPE OUTLET

ELEV. INV. = 1203.20

STA = 5+72.46

ELEV = 1201.00

STA = 5+50.14

ELEV = 1201.00

STA = 3+57.11

ELEV = 1200.00

STA = 3+36.84

ELEV = 1200.00

PROPOSED GRADE

PROPOSED

SUBMERGED BERM

TOP ELEV. = 1201.7

PROPOSED

SUBMERGED BERM

TOP ELEV. = 1201.7NWL ELEV. = 1202.2

SETTLED TOP BERM ELEV = 1209.00

(BEYOND SHEET PILE - SEE SHEET

C201)

0+00

0+50

1+00

1+50

2+00

2+50

3+00

3+50

4+00

4+50

5+00

5+50

6+00

6+50

7+00

7+50

8+00

8+50

9+00

9+50

10+00

10+23

0+00

0+50

1+00

1+50

2+00

2+50

3+00

3+50

4+00

4+50

5+00

5+50

6+00

6+50

7+00

7+50

8+00

8+50

9+00

9+50

10+00

10+23

0+00

0+50

1+00

1+50

2+00

2+50

3+00

3+50

4+00

4+50

5+00

5+50

6+00

6+50

7+00

7+50

8+00

8+50

9+00

9+50

10+00

10+23

OVERBUILD BERM TO 1209.5'

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

O F

F O

R A

N Y

R S O

U N

S S T

A R E

A C

N G

U N

T H

E D

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

M P

D O

C U

T A N

D I

N C

D E

N O

O N

B Y"

F O

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

N O

T F

O R

C O

N S

T R

U C

VERTICAL SCALE

1 inch = feet

HORIZONTAL SCALE

1 inch = feet

4 82

40 8020

PROFILE - WETLAND 2

(10:1 VERTICAL EXAGGERATION)

PROFILE - WETLAND 1 (FLOW PATH)

(10:1 VERTICAL EXAGGERATION)

NOTE:

BERM SHALL BE OVERBUILT BY 5%

(1209.5'), SO THAT THE SETTLED TOP OF

BERM WILL BE 1209.0'

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

-2 C

P R O

\E M

R Y\

C 3D

_D R A W

\I A -3

-1

S ite

P la n.

dw g, /2 3/

A nd re w

S ch ip pe rs

D P

R O

N on e

CAD FILE:

DRAWN BY:

SURVEYED BY:

REVIEWER:

DATE:

PROJECT NUMBER:

R ev is io ns D at e

B y

R ev is io n S he et

C202

4-23-2025

AS, AB

CK, WAJ

IA-340-13 Site Plan

C T

N O

C O

U N

W A

D P

R O

US-IA-340-13

-1

-C

A L

A N

W .A

A .S

-2

1- C

N S

A .S

-2

1- C

N S

7+00

8+00

9+00 0+

4+005+00

(1198) (1199)

(1200) (1201)

(1202)

(1198) (1199)

(1200) (1201)

(1202)

(1203)

(1201)

(1202)

(1202) (1200)

(1200)

NWL 8.2 ACRES AT

ELEV. = 1202.20

EXCAVATE 50' X 100' SEDIMENTATION

BASIN AND CHANNEL TO DIRECT WATER

TOWARDS SOUTH END OF WETLAND

NWL 8.2 ACRES AT

ELEV. = 1202.20

100-YEAR STORM ELEV. = 1208.00

APPROX. PARCEL BOUNDARY

SUBMERGED BERM TOP ELEV. = 1201.70;

10' WIDE TOP W/ 3:1 SIDE SLOPES

NWL 8.2 ACRES AT

ELEV. = 1202.20

APPROX. EASEMENT BOUNDARY

WETLAND PROFILE #1

(1203)

3:1 3:1

100'

FILL EXISTING

CHANNEL

3:1

IA DOT CLASS E

RIPRAP AT 1.5' DEPTH

0+00

0+50

1+00

1+50

2+00

2+50

3+00

3+50

4+00

4+50

5+00

5+50

5+79

NWL ELEV. = 1202.2'

EXISTING GRADE

PROPOSED GRADE INLET

CHANNEL TO WETLAND

STA = 3+08.17

ELEV = 1200.00

STA = 3+87.19

ELEV = 1199.95

STA = 3+97.26

ELEV = 1198.00

STA = 4+97.26

ELEV = 1198.00

STA = 5+14.99

ELEV = 1200.96

STA = 5+65.16

ELEV = 1201.50

PROPOSED

SEDIMENTATION BASIN

BOTTOM ELEV. = 1198.0

100'

3:1

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

O F

F O

R A

N Y

R S O

U N

S S T

A R E

A C

N G

U N

T H

E D

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

M P

D O

C U

T A N

D I

N C

D E

N O

O N

B Y"

F O

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

N O

T F

O R

C O

N S

T R

U C

GRAPHIC SCALE

1 inch = feet20

20 0 10 20 30 60

VERTICAL SCALE

1 inch = feet

HORIZONTAL SCALE

1 inch = feet

4 82

40 8020

PROFILE - SEDIMENTATION BASIN & WETLAND

(10:1 VERTICAL EXAGGERATION)

SCALE: 1" = 40'

PLAN VIEW - SEDIMENTATION BASIN & WETLAND

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

-2 C

P R O

\E M

R Y\

C 3D

_D R A W

\I A -3

-1

S ite

P la n.

dw g, /2 3/

A nd re w

S ch ip pe rs

T B A S

P R O

N on e

CAD FILE:

DRAWN BY:

SURVEYED BY:

REVIEWER:

DATE:

PROJECT NUMBER:

R ev is io ns D at e

B y

R ev is io n S he et

C203

4-23-2025

AS, AB

CK, WAJ

IA-340-13 Site Plan

C T

N O

C O

U N

W A

T B A S

P R O

US-IA-340-13

-1

-C

A L

A N

W .A

A .S

-2

1- C

N S

A .S

-2

1- C

N S

PROPOSED INTERCEPT

LOCATION OF NEW 12"Ø

HDPE DUAL-WALL PIPE WITH

EXISTING 10"Ø CONCRETE

TILE; INV. ELEV. = 1204.36

PROPOSED 15"Ø CMP OUTLET

INV. ELEV. = 1203.20;

PROVIDE 6' X 8' RIPRAP

STILLING BASIN AT OUTLET.

PROVIDE 20 LF 15"Ø CMP AT

OUTLET W/ 3' OVERLAP W/

12"Ø HDPE.

PROPOSED 12"Ø HDPE

DUAL-WALL TILE;

151 FEET @ 0.70% SLOPE

APPROX. PROPERTY/FENCELINE

NWL 8.2 ACRES AT

ELEV. = 1202.20

100-YEAR STORM ELEV. = 1208.00

EXISTING 10"Ø

CONCRETE TILE

(1207)

(1205)

(1204)

(1206)

PROVIDE 10:1

SIDE SLOPES

IN TILE COVER

EXISTING 10"Ø CONCRETE TILE

PROPOSED GRADE

(PROVIDE 3' MIN. COVER OVER NEW TILE)

PROPOSED 12"Ø HDPE DUAL-WALL

TILE; 151 L.F. @ 0.70% SLOPE

INTERCEPT EXISTING 10"Ø CONCRETE

TILE AT INV. ELEV. = 1204.36 WITH

NEW 12"Ø HDPE DUAL-WALL PIPE

PROPOSED 15"Ø CMP OUTLET

ELEV. INV. = 1203.20.

PROVIDE 20 LF 15"Ø CMP AT

OUTLET W/ 3' OVERLAP W/

12"Ø HDPE.

EXISTING 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…

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File details come from the government source that posted it. Updated Dec 8, 2025.