3-25-19_WINN970905C_Plans.pdf

PDF 13 MB Posted Nov 30, 2025

Attached to: Winn970905C 25-19
Solicitation number: 009-RFB-WRBWL_CY25-19
Issued by: Story County, Iowa

About this file

Written by GovTribe AI · Dec 8, 2025

This is a construction contract plan document prepared by the Iowa Department of Agriculture and Land Stewardship, Division of Soil Conservation and Water Quality, for a nutrient reduction wetland project (Winn970905C) on private land owned by Steve and Sherry Bouska in Winneshiek County, Iowa. The project involves comprehensive wetland construction services including site stripping and preparation, excavation of approximately 18,700 cubic yards of earthwork, placement of 1,403 square feet of steel sheetpiling to form a principal spillway weir structure, installation of 385 linear feet of drain tile and 116 linear feet of drawdown pipe, construction of water control structures and forebay features, placement of 920 tons of Class E riprap and clean stone, 116 cubic yards of concrete grout, and seeding of 8.7 acres of buffer and embankment areas. The wetland design accommodates a 285-acre drainage area with a 2.4-acre normal pool at elevation 1154.10 feet, maximum pool depth of 4.85 feet, and estimated sediment storage capacity of 31 years. The contract mandates substantial completion by November 15, 2026, for most construction work items and December 15, 2026, for seeding activities, with a pre-bid conference scheduled for December 2, 2025, at 11:00 AM and sealed bids due by 3:00 PM Central Time on December 17, 2025.

The estimated construction cost is between $300,000 and $400,000, with the contract to be awarded to the lowest responsive bidder meeting all technical specifications. Bidders must submit a bid bond equal to ten percent of their bid amount and provide proof of registration with the Iowa Department of Inspections, Appeals & Licensing. The successful contractor will be required to furnish a Performance/Payment Bond equal to 100% of the contract price. Non-Iowa corporations must provide proof of authorization from the Secretary of State to conduct business in Iowa prior to contract execution. The contractor assumes full responsibility for construction dewatering, utility location coordination through Iowa One-Call, contractor safety, and all work outside the project limits only with prior authorization. A 20% shrinkage factor has been incorporated into earthwork quantity estimates, and the contractor must adjust final grading as needed following consultation with the project engineer. The project engineer is Anthony Harbaugh, P.E. at Shive-Hattery, and the project manager is Sara Smith, P.E. at the Iowa Department of Agriculture and Land Stewardship.

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Other files

File	Type	Posted
5-25-20_WINN970905C_H&H_Report.pdf	PDF	Nov 30, 2025
9-25-20_WINN970905C_DoCC_SchedulePof_Prices_WORKSHEETpdf.pdf	PDF	Nov 30, 2025
1-25-19_WINN970905C_General_Requirements.pdf	PDF	Nov 30, 2025
7-25-20_WINN970905C_DocEE_BidBond_UPLOAD.pdf	PDF	Nov 30, 2025
6-25-20_WINN970905C_Geotech_Report.pdf	PDF	Nov 30, 2025
0-25-19_Winn970905C_Notice to Bidders.pdf	PDF	Nov 30, 2025
4-25-19_WINN970905C_Appendix_I.pdf	PDF	Nov 30, 2025
2-25-19_WINN970905C_Specifications.pdf	PDF	Nov 30, 2025
1356042-event.pdf	PDF	Nov 30, 2025
8-25-20_WINN970905C_Doccc_Proposal_UPLOAD.pdf	PDF	Nov 30, 2025
0-25-19_Winn970905C_Bid_Book_Entire.pdf	PDF	Nov 30, 2025

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STATE OF IOWA

DEPARTMENT OF AGRICULTURE AND LAND STEWARDSHIP

DIVISION OF SOIL CONSERVATION AND WATER QUALITY

Winn970905C NUTRIENT REDUCTION

WETLAND PROJECT

CONSTRUCTION CONTRACT

BID NO. 25-19

SECTION 09, TOWNSHIP 97 NORTH, RANGE 09 WEST

WINNISHEIK COUNTY, IOWA

PREPARED FOR: IOWA DEPARTMENT OF AGRICULTURE & LAND STEWARDSHIP

DIVISION OF SOIL CONSERVATION AND WATER QUALITY

HOOVER STATE OFFICE BUILDING

1305 EAST WALNUT STREET

DES MOINES, IOWA 50319

PREPARED BY: SHIVE-HATTERY

4125 WESTONPARKWAY SUITE 100

WEST DES MOINES, IOWA 50266

515-223-8104

December 2025

PLANS

STATE OF IOWA

WINNESHIEK COUNTY, IA

ENGINEER

SHIVE-HATTERY, INC

ATTN: ANTHONY HARBAUGH, PE

4125 WESTOWN PARKWAY, SUITE 100

WEST DES MOINES, IOWA 50266

PH: (515) 223-8104

SITE ADDRESS:

2100 270TH AVE

RIDGEWAY, IA 52165

CONTACT/SITE INFORMATION:

IOWA DEPARTMENT OF AGRICULTURE AND LAND STEWARDSHIP

SARA SMITH, PE, PROJECT MANAGER

502 E. 9TH STREET

DES MOINES, IA, 50319

PH: (515) 725-1298

SARA.SMITH@IOWAAGRICULTURE.GOV

WINN970905C WETLAND

IDALS

PROJECT

LOCATION

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PROJECT DRAWING COORDINATE SYSTEM:

HORIZONTAL: NAD83 IOWA STATE PLANE NORTH ZONE (1401)

VERTICAL: NAVD88

UNITS: U.S. SURVEY FEET

PAGES, SHEETS OR DIVISIONS COVERED BY THIS SEAL:

My License Renewal Date is: DECEMBER 31, Printed or typed name:

License Number:

Signature: Date

I HEREBY CERTIFY THAT THIS ENGINEERING DOCUMENT DESCRIBED

BELOW 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.

ALL SHEETS EXCLUDING C401

ANTHONY J. HARBAUGH

26394

CIVIL ENGINEER

NRCS NEM PART 505 CERTIFICATION

THE SIGNING PROFESSIONALS HEREBY CERTIFY

THAT, TO THE BEST OF THEIR PROFESSIONAL

KNOWLEDGE, JUDGEMENT, AND BELIEF, THESE

PLANS MEET APPLICABLE NRCS STANDARDS.

I O

W A D E P A R T M E NT O F

AGR

I C U L T UR E & L A N D S T EWA R D

S H

PROJECT

LOCATION

WINNESHIEK COUNTY

THE ENGINEERING JOB CLASS IS IV

CONSTRUCTION

ENTRANCE

RIDGEWAY

DECORAH

FESTINA

SPILLVILLE, IA

3 MILES

BURR OAK LANDOWNERS

STEVE & SHERRY BOUSKA

PH: (563) 737-2723

EASEMENT

BOUNDARY

NUTRIENT REDUCTION WETLAND

A B C D E F

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MILITARY

FORT ATKINSON

CONOVER RD

RIDGEWAY, IA

4 MILES

CONOVER

SPILLVILLE

SPOIL PILE

CONSTRUCTION

ACCESS ROUTE

Sheet List Table Sheet Number Sheet Title

C000 COVER SHEET

C001 PROJECT QUANTITIES & NOTES

CD01 EXISTING CONDITIONS & REMOVALS

C201 WETLAND GRADING PLAN

C202 SPOIL GRADING PLAN

C203 CUT-FILL PLAN

C301 EMBANKMENT PLAN & PROFILE

C302 PRINCIPAL SPILLWAY PLAN & PROFILE

C303 DRAWDOWN PLAN & PROFILE

C304 FOREBAY PLAN & PROFILE

C305 EAST WATERWAY PLAN & PROFILE

C306 TILE PLAN & PROFILE

C307 DITCH RE-ROUTE PLAN & PROFILE

C308 WETLAND PLAN & PROFILE

C401 SHEET PILE DESIGN

C501 CONSTRUCTION DETAILS

C502 CONSTRUCTION DETAILS

C503 CONSTRUCTION DETAILS

C601 SEEDING PLAN

PAGES, SHEETS OR DIVISIONS COVERED BY THIS SEAL:

My License Renewal Date is: DECEMBER 31, Printed or typed name:

License Number:

Signature: Date

I HEREBY CERTIFY THAT THIS ENGINEERING DOCUMENT DESCRIBED

BELOW 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.

C401

CHRIS R. MARVIN

27417

STRUCTURAL ENGINEER

08-12-2025

D R

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ESTIMATED QUANTITIES:

GENERAL NOTES:

1. THE LOCATIONS OF UTILITY MAINS, STRUCTURES AND SERVICE

CONNECTIONS PLOTTED ON THIS DRAWING ARE APPROXIMATE ONLY AND

WERE OBTAINED FROM RECORDS MADE AVAILABLE TO SHIVE-HATTERY,

INC. THERE MAY BE OTHER EXISTING UTILITY MAINS, STRUCTURES AND

SERVICE CONNECTIONS NOT KNOWN TO SHIVE-HATTERY, INC. AND NOT

SHOWN ON THIS DRAWING. THE VERIFICATION OF EXISTENCE OF, AND THE

DETERMINATION OF THE EXACT LOCATION OF, UTILITY MAINS,

STRUCTURES AND SERVICE CONNECTIONS SHALL BE THE RESPONSIBILITY

OF THE CONSTRUCTION CONTRACTOR(S).

2. IOWA CODE 480, UNDERGROUND FACILITIES INFORMATION, REQUIRES

VERBAL NOTICE TO IOWA ONE-CALL 1-800-292-8989, NOT LESS THAN 48

HOURS BEFORE EXCAVATING, EXCLUDING WEEKENDS AND HOLIDAYS.

3. THE MEANS OF THE WORK AND THE SAFETY OF THE CONTRACTOR'S

EMPLOYEES ARE SOLELY THE RESPONSIBILITY OF THE CONTRACTOR.

4. NO WORK SHALL BE PERFORMED BEYOND THE PROJECT LIMITS WITHOUT

PRIOR AUTHORIZATION FROM THE OWNER'S REPRESENTATIVE.

5. REPLACE ANY PROPERTY MONUMENTS REMOVED OR DESTROYED BY

CONSTRUCTION. MONUMENTS SHALL BE SET BY A LAND SURVEYOR

REGISTERED TO PRACTICE IN THE STATE OF IOWA.

6. ALL DEBRIS AND TRASH ENCOUNTERED DURING CONSTRUCTION WITHIN

THE PROJECT LIMITS, OR DIRECTED BY THE ENGINEER, SHALL BE

PROPERLY DISPOSED OF.

7. CONTRACTOR IS RESPONSIBLE FOR ALL CONSTRUCTION DE-WATERING

THAT IS REQUIRED AT NO ADDITIONAL COST TO THE DIVISION.

8. REPAIR OR REPLACE DAMAGE TO EXISTING FACILITIES (TILE, UTILITIES,

FENCES, ETC.) DESIGNATED TO REMAIN, AT NO ADDITIONAL EXPENSE TO

THE OWNER. ALL AREAS DISTURBED BY CONSTRUCTION, INCLUDING

STAGING AREAS AND HAUL ROUTES, ARE TO BE REWORKED TO THEIR

EXISTING CONDITIONS AND SEEDED AT NO ADDITIONAL COST TO THE

DIVISION IF OUTSIDE OF PROJECT LIMITS AND NOT APPROVED BY

ENGINEER.

9. WORK WHICH DOES NOT CONFORM TO THE REQUIREMENTS OF THE

CONTRACT WILL BE CONSIDERED UNACCEPTABLE. UNACCEPTABLE WORK,

WHETHER THE RESULT OF POOR WORKMANSHIP, USE OF DEFECTIVE

MATERIALS, DAMAGE THROUGH CARELESSNESS OR ANY OTHER CAUSE,

FOUND TO EXIST PRIOR TO THE FINAL ACCEPTANCE OF THE WORK, SHALL

BE REMOVED AND REPLACED IN AN ACCEPTABLE MANNER, AS REQUIRED

BY THE OWNER AT THE CONTRACTOR'S EXPENSE.

10. WORK DONE CONTRARY TO THE INSTRUCTIONS OF THE OWNER'S

REPRESENTATIVE, WORK DONE BEYOND THE LINES SHOWN ON THE PLANS

OR ANY EXTRA WORK DONE WITHOUT AUTHORITY WILL NOT BE PAID FOR.

11. A SHRINKAGE FACTOR OF 20% WAS ESTIMATED FOR THIS PROJECT. THE

CONTRACTOR SHALL MAKE CHANGES IN EARTHWORK AS NEEDED TO

ADJUST FOR INACCURACIES INHERENT WITH ESTIMATING THE SHRINKAGE

FACTOR. THESE CHANGES SHALL ONLY BE MADE AFTER CONSULTATION

AND APPROVAL BY THE ENGINEER AND DIVISION.

12. CONTOURS AND SPOT ELEVATIONS SHOWN ARE TO FINISHED GRADE.

13. THE CONTRACTOR SHALL KEEP ALL ROADS OPEN TO THROUGH TRAFFIC

AT ALL TIMES.

14. ALL WORK WITHIN THE PUBLIC RIGHT OF WAY SHALL BE COORDINATED

WITH THE GOVERNING AUTHORITY AND SHALL BE DONE IN ACCORDANCE

WITH THEIR STANDARDS.

15. SUBMIT MANUFACTURER'S CERTIFICATION AND MATERIAL DATA FOR ALL

MATERIALS DELIVERED TO THE PROJECT SITE AS REQUESTED BY THE

OWNER'S REPRESENTATIVE.

16. CONSTRUCTION SURVEY STAKING WILL BE PAID FOR BY THE OWNER AND

PROVIDED BY THE ENGINEER. CONTROL POINTS WILL BE SET FOR USE

WITH GPS CONTROLLED GRADING, IF DESIRED. CONTRACTOR SHALL

PRESERVE STAKES TO THE EXTENT FEASIBLE. ANY RE-STAKING COSTS

WILL BE THE RESPONSIBILITY OF THE CONTRACTOR.

17. NEITHER SHIVE-HATTERY NOR IDALS GUARANTEE THIS PRACTICE WILL

HOLD A PERMANENT POOL OF WATER.

CULTURAL RESOURCES NOTE:

1. IF A CULTURAL RESOURCE IS IDENTIFIED

DURING CONSTRUCTION, STOP IMMEDIATELY

AND NOTIFY LOCAL NATURAL RESOURCES

CONSERVATION SERVICE OFFICE.

ESTIMATE REFERENCE NOTES:

WETLAND DESIGN DATA:

ITEM # SPEC # DESCRIPTION

1 IA CS-001

SITE STRIPPING & PREPARATION : THIS ITEM WILL CONSIST OF WORK TO REMOVE AND DISPOSE OF EXISTING MATERIAL TO REMOVE VEGETATION ON AREAS TO BE EXCAVATED OR FILLED. TOTAL DEPTH OF VEGETATIVE STRIPPING AND TOPSOIL STRIPPING SHALL EQUAL A COMBINED DEPTH OF 12", WITH THE ESTIMATED AMOUNT OF TOPSOIL REMOVAL BEING 11,118 CUBIC YARDS. THE TOPSOIL REPLACEMENT QUANTITY SHALL BE PAID SEPARATELY. THIS ITEM WILL ALSO INCLUDE ANY TREE AND BRUSH REMOVAL ALONG WITH ANY FENCES.

2 IA CS-001

CROP DAMAGE: THIS ITEM CONSISTS OF CROP DAMAGE THAT RESULTS FROM CONSTRUCTION ACTIVITIES. IT IS RECOMMENDED CONTRACTOR REMOVE CORN RESIDUE RATHER THAN KNOCK IT DOWN. PAYMENT FOR CROP DAMAGE WILL BE MADE TO THE NEAREST 0.1 ACRE AS MEASURED BY THE ENGINEER OR THEIR REPRESENTATIVE. THE UNIT RATE FOR CROP DAMAGE WILL BE DETERMINED BY THE DIVISION NEAR THE COMPLETION OF CONSTRUCTION AND ADDED TO THE CONTRACT WITH A CHANGE ORDER. PAYMENT WILL BE MADE TO CONTRACTOR WHO WILL PAY LANDOWNER.

3 IA CS-006 STRUCTURE & CHANNEL SEEDING: THIS ITEM INCLUDES SEEDING FOR ALL EMBANKMENT AREAS AND INCLUDES SEEDBED PREP, SEEDING, MULCHING, AND FERTILIZER.

4 IA CS-006 BUFFER SEEDING: THIS ITEM INCLUDES SEEDING FOR ALL AREAS ABOVE NORMAL POOL AND WITHIN EASEMENT BOUNDARY, EXCLUDING THOSE AREAS WHERE STRUCTURE SEEDING IS SPECIFIED. SEE SEEDING

PLAN. NO MULCH OR FERTILIZER SHALL BE APPLIED.

5 CS-008

MOBILIZATION AND DEMOBILIZATION: THIS ITEM SHALL BE CONSIDERED FULL COMPENSATION TO MOBILIZE AND DEMOBILIZE THE CONTRACTOR'S FORCES AND EQUIPMENT FOR THE PROJECT. ALL OTHER WORK NECESSARY TO COMPLETE THE PROJECT AS REPRESENTED HEREIN BUT NOT INCLUDED IN THE ITEMS LISTED BELOW SHALL BE INCIDENTAL TO THIS ITEM. THIS ITEM SHALL INCLUDE ALL LABOR, MATERIALS, EQUIPMENT AND IOWA ONE CALL NOTIFICATIONS TO INSTALL SIGN PROVIDED BY IOWA DEPARTMENT OF AGRICULTURE AND LAND STEWARDSHIP, AS SHOWN ON THE PLANS OR ON NEXT PAGE.

6 IA CS-009 DRAIN TILE INVESTIGATION AND REMOVAL: THIS ITEM INCLUDES THE EXPLORATORY EXCAVATIONS REQUIRED TO LOCATE AND REMOVE TILES SHOWN ON THE PLANS. THIS IS FULL COMPENSATION FOR

EXCAVATION, BACKFILLING, AND REMOVAL OF THE TILE TRENCHES.

7 IA CS-013 STEEL SHEET PILING: THIS ITEM INCLUDES PROCUREMENT AND INSTALLATION OF THE SHEET PILING AS DETAILED ON SHEET C401 INCLUDING FIELD WELDING, CUTTING, TRIMMING, WALER, BOLTS, NUTS, AND

OTHER APPURTENANCES.

8 IA CS-021

EXCAVATION (GENERAL): THIS ITEM INCLUDES THE EXCAVATION OF MATERIAL REQUIRED TO CONSTRUCT THE CORE TRENCH BELOW THE EXISTING GROUND LEVEL, AS DETAILED, ALONG THE CENTERLINE OF PROPOSED DAM EMBANKMENT. TERMINATE CORE TRENCH IN SUITBALE IMPERVIOUS SOILS. CORE TRENCHES SHALL BE LEFT OPEN FOR INSPECTION BY THE ENGINEER. THIS ITEM ALSO INCLUDE REMOVAL OF ANY TILE LOCATE WITHIN THE CORE TRENCH EXTENDING 10 FEET BEYOND THE EMBANKMENT FOOTPRINT. TILE SHALL BE TRACED UPSTREAM AND DAYLIGHTED TO PROPOSED POOLS WHERE POSSIBLE. COORDINATE

WITH THE ENGINEER IF ADDITIONAL TILE WORK IS REQUIRED.

9 IA CS-023

EARTHFILL (GENERAL (P)): THIS ITEM INCLUDES THE AMOUNT OF MATERIAL REQUIRED TO CONSTRUCT THE SUBMERGED BERMS AND ADDITIONAL FILL TO BE PLACED OVER TILE COVER BERMS. COHESIVE MATERIAL FOUND DURING GENERAL GRADING AND COMPACTED LINER REMOVAL CAN BE USED FOR THESE AREAS. SAND AND GRAVEL FOUND ON SITE SHALL NOT BE USED FOR THIS EARTHFILL. SEE SHEET C201, C202, AND C203 FOR LIMITS OF EXCAVATION AND ASSOCIATED FILL. THE REQUIRED FILL INCLUDES A 20% SHRINKAGE FACTOR. MEASUREMENT AND PAYMENT FOR PLACEMENT AND COMPACTION OF ALL FILL MATERIAL IS INCLUDED IN THIS ITEM AND WILL BE PAID BASED ON PLAN QUANTITY. COMPACTION SHALL BE NRCS METHOD 1.

10 IA CS-023

EARTHFILL (GENERAL DAM (P)): THIS ITEM INCLUDES THE EARTHFILL PLACEMENT AND COMPACTION NECESSARY TO CONSTRUCT THE PORTION OF THE EMBANKMENT THAT IS NOT THE EMBANKMENT CORE.

COHESIVE MATERIAL FOUND DURING GENERAL GRADING AND COMPACTED LINER CAN BE USED FOR THIS AREA. SAND AND GRAVEL FOUND ON SITE SHALL NOT BE USED FOR FILL IN THESE AREAS. SEE SHEET C201, C202, AND C203 FOR LIMITS OF EXCAVATION AND ASSOCIATED FILL. THE REQUIRED FILL INCLUDES A 20% SHRINKAGE FACTOR. REMOVE ALL BRICKS, ROCK FRAGMENTS, AND OTHER DELETERIOUS OBJECTS FROM FILL MATERIALS. FILL MATERIAL SHALL BE PLACED IN COMPACTED IN LIFTS NO MORE THAN 9" THICK. MEASUREMENT AND PAYMENT FOR PLACEMENT AND COMPACTION OF ALL FILL MATERIAL IS INCLUDED IN THIS ITEM AND WILL BE PAID BASED ON PLAN QUANTITY. COMPACTION SHALL BE NRCS METHOD 1.

11 IA CS-023

EARTHFILL (DAM CORE (P)): THIS ITEM INCLUDES THE EARTHFILL PLACEMENT AND COMPACTION NECESSARY TO CONSTRUCT THE EMBANKMENT CORE WITHIN THE EMBANKMENT. COHESIVE MATERIAL TAKEN FROM DESIGNATED BORROW AREA SHOULD BE USED FOR THIS AREA. SAND AND GRAVEL SHALL NOT BE USED FOR THIS AREA. SEE SHEET C201, C202, AND C203 FOR LIMITS OF EXCAVATION AND ASSOCIATED FILL.

THE REQUIRED FILL INCLUDES A 20% SHRINKAGE FACTOR. REMOVE ALL BRICKS, ROCK FRAGMENTS, AND OTHER DELETERIOUS OBJECTS FROM FILL MATERIALS. FILL MATERIAL SHALL BE PLACED IN COMPACTED IN LIFTS NO MORE THAN 9" THICK. MEASUREMENT AND PAYMENT FOR PLACEMENT AND COMPACTION OF ALL FILL MATERIAL IS INCLUDED IN THIS ITEM AND WILL BE PAID BASED ON PLAN QUANTITY. COMPACTION

SHALL BE NRCS METHOD 2.

12 IA CS-023

EARTHFILL (18" CLAY LINER, WETLAND BOTTOM, TWO 9" LIFTS (P)): THIS ITEM INCLUDES SCARIFICATION AND LOOSENING OF AN 18" LINER IN TWO LIFTS IN ALL EXCAVATED AREAS WITHIN THE WETLAND POOL.

REMOVE AN ADDITIONAL 9" OF SOIL, SCARIFY AND RE-COMPACT 9" BELOW, REPLACE 9" AND RECOMPACT, MOISTURE CONDITIONING, AND COMPACTION OF THE WETLAND BOTTOM TO FORM A SEAL. SEE SHEET C201, C202, AND C203 FOR LIMITS OF EXCAVATION AND ASSOCIATED FILL. CONTRACTOR SHALL REMOVE ROCKS LARGER THAN 6 INCHES. NOTIFY ENGINEER IMMEDIATELY IF SANDY SOILS ARE ENCOUNTERED. ITEM

WILL BE PAID BASED ON PLAN QUANTITY.

13 IA CS-023

EARTHFILL (SCARIFY AND RECOMPACT 9" LAYER OF WETLAND BOTTOM AND EMBANKMENT FOOTPRINT (P)): THIS ITEM INCLUDES SCARIFICATION AND LOOSENING OF A 9 INCH SURFACE LAYER OF SOIL WITHIN THE WETLAND POOL BOTTOM AND EMBANKMENT FOOTPRINT WHERE EXCAVATION DOES NOT OCCUR, MOISTURE CONDITIONING, AND COMPACTION OF THE MATERIAL TO FORM A SEAL AND SOILD EMBANKMENT FOUNDATION. SEE SHEET C201, C202, AND C203 FOR LIMITS OF EXCAVATION AND ASSOCIATED FILL. CONTRACTOR SHALL REMOVE ROCKS LARGER THAN 6 INCHES. NOTIFY ENGINEER IMMEDIATELY IF SANDY SOILS

ARE ENCOUNTERED. ITEM WILL BE PAID BASED ON PLAN QUANTITY.

14 IA CS-026 TOPSOIL PLACEMENT, 12 INCH (P): THIS ITEM WILL CONSIST OF SPREADING SALVAGED AND STOCKPILED TOPSOIL AS THE SURFACE LAYER OF THE EMBANKMENT. TOPSOIL SHALL BE PLACED AS FINAL LIFT.

MEASUREMENT AND PAYMENT FOR TOPSOILING SHALL BE ON A PLAN QUANTITY. PLAN QUANTITY LISTED IN THE PROPOSAL WILL BE USED TO MEASURE AND PAY FOR THE BID.

15 IA CS-026 TOPSOIL PLACEMENT, 6 INCH (P): THIS ITEM WILL 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 FINAL LIFT. MEASUREMENT AND PAYMENT FOR TOPSOILING SHALL BE ON A PLAN QUANTITY. PLAN QUANTITY LISTED IN THE PROPOSAL WILL BE USED TO MEASURE AND PAY FOR THE BID.

16 IA CS-046 6" CORRUGATED POLYETHYLENE PIPE (DUAL WALL, NON-PERFORATED): THIS ITEM INCLUDES THE MATERIAL, EXCAVATION, PLACEMENT, JOINTING, AND BACKFILL OF THE 6" DUAL-WALL NON-PERFORATED HDPE

DRAIN TILE. SEE SHEET C306 FOR LENGTHS, LOCATIONS AND ELEVATIONS.

17 IA CS-046 8" CORRUGATED POLYETHYLENE PIPE (DUAL WALL, NON-PERFORATED): THIS ITEM INCLUDES THE MATERIAL, EXCAVATION, PLACEMENT, JOINTING, AND BACKFILL OF THE 6" DUAL-WALL NON-PERFORATED HDPE

DRAIN TILE. SEE SHEET C306 FOR LENGTHS, LOCATIONS AND ELEVATIONS.

18 IA CS-051 24" ALUMINIZED CMP DRAWDOWN RISER, 12 GA: THIS ITEM INCLUDES COSTS FOR THE MATERIAL AND INSTALLATION OF 24 INCH ALUMINIZED CMP DRAWDOWN STRUCTURE RISER PIPE, TRASH RACK, AND BASE A

DETAILED.

19 IA CS-051 48" CMP WATER CONTROL STRUCTURE: THIS ITEM INCLUDES ALL LABOR, EQUIPMENT, AND MATERIALS FOR THE PLACEMENT OF THE 48" CMP RISER STRUCTURE, FOOTING, STEEL, FABRICATION, PIPE

CONNECTIONS, AND TRASH RACK.

20 IA CS-051 18" CMP DRAWDOWN WETLAND OUTLET PIPE: THIS ITEM INCLUDES ALL LABOR, EQUIPMENT, MATERIALS REQUIRED FOR THE EXCAVATION, AND THE PLACEMENT OF THE CORRUGATE METAL PIPE.

21 IA CS-051 8" CMP TILE OUTLETS (20 LF EACH): THIS ITEM INCLUDES THE COSTS FOR MATERIAL, EXCAVATION, PLACEMENT, JOINTING, BEDDING, RODENT GUARDS, AND BACKFILLING OF THE 20 LF 8" CMP END SECTION FOR THE PROPOSED FIELD TILE OUTLET TO THE WETLAND. 8" CMP OUTLET SECTIONS ARE FOR 6 INCH TILES.

22 IA CS-051 10" CMP TILE OUTLETS (20 LF EACH): THIS ITEM INCLUDES THE COSTS FOR MATERIAL, EXCAVATION, PLACEMENT, JOINTING, BEDDING, RODENT GUARDS, AND BACKFILLING OF THE 20 LF 10" CMP END SECTION FOR THE PROPOSED FIELD TILE OUTLET TO THE WETLAND. 10" CMP OUTLET SECTIONS ARE FOR 8 INCH TILES.

23 IA CS-061

RIP RAP: THIS ITEM INCLUDES THE EXCAVATION AND PLACEMENT OF CLASS 'E' REVETMENT OVER GEOTEXTILE FABRIC AT THE LOCATIONS SHOWN ON THE PLANS. THIS ITEM INCLUES TILE OUTLETS, FOREBAY ROCK CHECKS, SHEET PILE OUTLET CHANNEL, AND LOW WATER CROSSING. GEOTEXTILE FABRIC IS INCIDENTAL TO THIS ITEM. QUANTITY DETERMINATION IS BASED ON A UNIT WEIGHT OF 105 POUNDS PER CUBIC

FOOT. PROVIDE WEIGHT TICKETS TO OWNER'S REPRESENTATIVE.

24 IA CS-061 2" CLEAN STONE: THIS ITEMS INCLUDES PROCUREMENT, PLACEMENT AND SPREADING OF 2 INCH CLEAN STONE AT THE CONSTRUCTION ENTRANCE. QUANTITY DETERMINATION IS BASED ON A UNIT WEIGHT OF 130

POUNDS PER CUBIC FOOT.

25 IA CS-062

CONCRETE GROUT: GROUT MIX SHALL BE AS SPECIFIED AND SHALL BE PLACED USING A CONCRETE PUMPER. GROUT SHALL FULLY ENCASE THE BOTTOM OF THE RIP RAP BUT NOT FULL TO THE TOP OF THE RIP RAP SO AS TO REDUCE THE ENERGY DISSIPATION CAPABILITIES. GROUT UPSTREAM OF THE WEIR SHALL BE SMOOTH FINISHED 1" BELOW THE CREST. GROUT SHALL ONLY BE PLACED IN THE PRESENCE OF THE

ENGINEER.

26 IA CS-005 POLLUTION CONTROL, SILT FENCE: THIS ITEM INCLUDES PROCUREMENT AND INSTALLATION OF SILT FENCE DITCH CHECKS AS SHOWN ON THE PLANS AND AS DETAILED.

27 IA-392 BARB-WIRED FENCE REMOVAL AND REPLACEMENT: THIS ITEM INCLUDES ALL MATERIALS, LABOR, AND EQUIPMENT REQUIRED FOR THE PROPER INSTALLATION OF 5-STRAND BARBED WIRE FENCE AT THE

LOCATIONS INDICATED IN THE PLANS.

# ITEM DESCRIPTION QUANTITY UNITS

1 SITE STRIPPING & PREPARATION 1 LS

2 CROP DAMAGE 0 AC

3 STRUCTURE & CHANNEL SEEDING 0.3 AC

4 BUFFER SEEDING 8.4 AC

5 MOBILIZATION AND DEMOBILIZATION 1 LS

6 DRAIN TILE INVESTIGATION AND REMOVAL 1,115 LF

7 STEEL SHEET PILING 1,403 SF

8 EXCAVATION (GENERAL) 795 CY

9 EARTHFILL (GENERAL (P)) 4,702 CY

10 EARTHFILL (GENERAL DAM (P)) 903 CY

11 EARTHFILL (DAM CORE (P)) 1,864 CY

12 EARTHFILL (18" CLAY LINER, WETLAND BOTTOM, TWO 9" LIFTS (P)) 3,377 CY

13 EARTHFILL (SCARIFY AND RECOMPACT 9" LAYER OF WETLAND BOTTOM (P)) 1,214 CY

14 TOPSOIL PLACEMENT, 12 INCH (P) 574 CY

15 TOPSOIL PLACEMENT, 6 INCH (P) 5,272 CY

16 6" CORRUGATED PROFILE WALL (DUAL WALL, NON-PERFORATED) POLYETHYLENE PIPE 176 LF

17 8" CORRUGATED PROFILE WALL (DUAL WALL, NON-PERFORATED) POLYETHYLENE PIPE 209 LF

18 24" ALUMINIZED CMP DRAWDOWN RISER, 12 GA 1 EA

19 48" CMP WATER CONTROL STRUCTURE 1 EA

20 18" ALUMINIZED CMP WETLAND DRAWDOWN PIPE, 14GA 116 LF

21 8" CMP TILE OUTLETS (20 LF EACH) 1 EA

22 10" CMP TILE OUTLETS (20 LF EACH) 1 EA

23 RIP RAP 885 TON

24 2" CLEAN STONE 35 TON

25 CONCRETE GROUT 115 CY

26 POLLUTION CONTROL, SILT FENCE 720 LF

27 BARB-WIRED FENCE REMOVAL AND REPLACEMENT 20 LF

PROJECT ID WINN970905C -----

LANDOWNER(S) STEVE & SHERRY BOUSKA -----

PRELIMINARY OR FINAL DESIGN FINAL DESIGN -----

DRAINAGE AREA 280.5 ACRES

WETLAND POOL AREA 2.40 ACRES

DEEP WATER AREA (>3 FT DEEP) 0.20 ACRES

NORMAL POOL ELEVATION / PRIMARY SPILLWAY ELEVATION 1154.10 FEET

AVERAGE POOL DEPTH 1.31 FEET

MAXIMUM POOL DEPTH 4.85 FEET

WETLAND STORAGE 2.80 ACRE-FEET

BERM ELEVATION 1159.00 FEET

WETLAND BERM STORAGE 18.87 ACRE-FEET

LENGTH OF BERM 277 FEET

AUXILIARY SPILLWAY ELEVATION N/A FEET

AUXILIARY SPILLWAY WIDTH N/A FEET

WEIR WIDTH 40 FEET

DROP HEIGHT (PRIMARY SPILLWAY ELEVATION – STILLING BASIN LOWEST ELEVATION) 5.4 FEET

HEIGHT OF DAM (BERM ELEVATION – STILLING BASIN LOWEST ELEVATION) 10.3 FEET

STILLING BASIN LENGTH 77 FEET

TIME OF CONCENTRATION 1.48 HOURS

WEIGHTED RUNOFF CURVE NUMBER 79 -----

25-YEAR STORM DESIGN FLOW 373.64 CFS

25-YEAR FLOOD SURF. ELEVATION 1156.64 FEET

50-YEAR STORM DESIGN FLOW 466.75 CFS

50-YEAR FLOOD SURF. ELEVATION 1156.86 FEET

100-YEAR STORM DESIGN FLOW 569.23 CFS

100-YEAR FLOOD SURF. ELEVATION 1157.10 FEET

ESTIMATED SEDIMENT STORAGE 31 YEARS

TOTAL EASEMENT AREA 7.41 ACRES

bruutr Comment on Text The correct number is IA-382

118511

121012

XXXX

X X

XXXXXXXXXXX

X X

XXXXXXXXXXXXXXXXXXXXXXX

X X

LOCATE, CRUSH, AND BURY ALL TILE WITHIN PROPOSED WETLAND POOL.

FOR TILE RUNNING UNDER THE WETLAND EMBANKMENT, REMOVE TILE

AND BACKFILL TRENCH WITH CLAY EXTENDING 10 FEET DOWNSTREAM OF

THE EMBANKMENT FOOTPRINT, CAP UPSTREAM END OF TILE.

LOCATE EXISTING FIELD TILE AND TIE IN TO NEW

MAIN WHERE FEASIBLE. BREAK AND CAP/PLUG

DOWNSTREAM TILE APPROXIMATELY 10 FEET

DOWNSTREAM OF CONNECTION POINT (TYP.) PROPOSED TILE (TYP.)

PROTECT

EXISTING TREE

6" PVC TILE OUTLET

IE = 1147.08

EXISTING TILE (TYP.)

C O

N O

R D

TOP OF ROAD

ELEV = 1156.10

PROTECT EXISTING

FENCE (TYP.)

IE = 1147.15

IE = 1138.26

EXISTING 4' X 5' RCP

BOX CULVERT

NORMAL WATER LEVEL

ELEV = 1154.10

100-YR STORM BOUNCE

ELEV = 1157.10EASEMENT

BOUNDARY (TYP.)

BORROW GRADING LIMITS

- SEE C201

1" STEEL

SPRINGHEAD OUTLET

IE = 1157.02

270TH AVE

STAGING AREA

35 TONS 2" CLEAN STONE

CONSTRUCTION ACCESS

ACCESS ROUTE

AFTER CONSTRUCTION,

RE-ESTABLISH AREA TO

STATE PRIOR TO WORK

SPOIL AREA

GRADING

LIMITS (TYP.)

SPOIL HAUL ROUTE

PROTECT

EXISTING TREES

REMOVE AND REPLACE 20 LF

SECTION OF EXISTING

BARBED-WIRE FENCE

- SEE DETAIL

PROTECT EXISTING

FENCE (TYP.)

APPROX. EXISTING

4" HDPE IE = 1156.6

D R

O R

D B

O O

T N

N O

Pr in te d: CD01

O R

-1

C W

N D

, I

\U se rs

\G Kr ich el

\D C\

oc s\

Sh ive

-H at te ry

, I nc

-\2

S- W

\P ro je ct

F ile s\ Sh ive -H at te ry \1

_C ivi l\C D0

- E

C O

.d wg

A B C D E F

W es to w n Pk w y, S ui te

W es t D es

M oi ne s, Io w a

w w w

.s hi ve -h at te ry .c om

Io w a

Il lin oi s

In di an a

N eb ra sk a

W is co ns in

IOWA D

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A G R I C U L T URE

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PROPERTY LINE (APPROX)

EXISTING CONTOUR - MAJOR

EXISTING CONTOUR - MINOR 1100

LEGEND SURVEY NOTES:

1. LIMITED TOPOGRAPHIC SURVEY COMPLETED BY ERDMAN

ENGINEERING ON JULY 7TH, 2024.

2. SUPPLEMENTAL EXISTING SURFACE INFORMATION SHOWN WAS

BASED ON LIGHT DETECTION AND RANGING (LIDAR) INFORMATION

FROM IOWA DNR (2020).

3. CONTRACTOR SHALL VERIFY CONTROL AND BASE SURFACE PRIOR

TO CONSTRUCTION AND COORDINATE WITH ENGINEER.

COORDINATE SYSTEM AND DATUM:

HORIZONTAL DATUM - NAD83, IOWA STATE PLANE, NORTH ZONE

VERTICAL DATUM - NAVD88

TILE INFORMATION

LIMITED TILE INVESTIGATION WAS COMPLETED BY SHIVE-HATTERY ON

MARCH 26TH, 2025. LOCATED TILE INFORMATION IS INCLUDED ON THIS

SHEET AT SELECT LOCATIONS. ALL OTHER TILE INFORMATION IS

APPROXIMATE AND WAS PROVIDED BY THE LANDOWNER.

EXISTING DRAIN TILE (4")

EXISTING FENCE

EASEMENT BOUNDARY

100-YR STORM BOUNCE

SOILS NOTES:

1. STRIP AND STOCKPILE 12 INCHES OF TOPSOIL IN EMBANKMENT FOOTPRINT. STRIP 6 INCHES OF

TOPSOIL IN ALL OTHER DISTURBED AREAS. RESPREAD ALL TOPSOIL IN DISTURBED AREAS PRIOR

TO SEED BED PREPARATION AND SEEDING IN STRIPPED AREAS.

2. SCARIFY AND RE-COMPACT 9 INCHES OF SOIL IN ENTIRE WETLAND FOOTPRINT. ADDITIONALLY, IN

EXCAVATED AREAS WITHIN THE POOL, AN ADDITIONAL 9 INCHES OF SOIL. SCARIFY AND

RE-COMPACT 9 INCHES BELOW, REPLACE 9 INCHES, AND RE-COMPACT (18 INCH LINER IN TWO

LIFTS). RESPREAD TOPSOIL AFTER COMPLETION.

DRAIN TILE REMOVAL

N O

EXISTING DRAIN TILE (5")

PROPOSED TILE

NORMAL WATER LEVEL

FENCE REMOVAL

5:1

11:111

114511

117511

1185 11

50 11

55 11

1165 11 70 1175 11

119011

8:1

9:1

6:1

X X

XXXXXX

X X

X X X X X X X

X X

XXXXXXX

CONOVER RD

270TH

AVE

WETLAND TOP OF DAM

ELEVATION = 1159.00

AREA = 4.1 ACRES

WETLAND NORMAL WATER LEVEL

ELEVATION = 1154.10

AREA = 2.4 ACRES

EMBANKMENT FOOTPRINT

AREA = 0.3 ACRES

CONSTRUCTION

ACCESS

APPROXIMATE PROPERTY

BOUNDARY (TYP.)

SHEET PILE STRUCTURE

CREST ELEV = 1154.10

CREST WIDTH = 40 FEET

TOP WIDTH = 87.4 FEET

DROP HEIGHT = 5.4 FEET

SHEET PILE HEIGHT = 17.1 FEET

- SEE SHEETS C301, C302, AND C401

TOP OF DAM

ELEV = 1159.00

TOP WIDTH = 10 FEET

- SEE C301

GROUTED RIPRAP

STILLING BASIN

- SEE C302

WETLAND 100-YR STORM BOUNCE

ELEVATION = 1157.10

AREA = 3.4 ACRES

PROJECT EASEMENT (TYP.)

WASTE REMAINING EXCESS

SOIL IN SPOIL AREA

- SEE SHEET C202

DRAWDOWN STRUCTURE

- SEE SHEET C303

SUBMERGED BERMS

TOP WIDTH = 20 FEET

SIDE SLOPES = 8:1

ELEV = 1153.60

WETLAND FOREBAY

- SEE C304

DITCH RE-ROUTE AND

SPRINGHEAD CONNECTION

- SEE SHEET C307

TILE CONNECTION

- SEE SHEET C306

10' WIDE WAVE BENCH

- SEE DETAIL

PROPOSED ESTIMATED BORROW AREA BASED ON 24" OF

SUITABLE MATERIAL FOR EMBANKMENT CONSTRUCTION

ESTIMATED QUANTITY OF COHESIVE MATERIAL NEEDED TO

CONSTRUCT EMBANKMENT AND DAM CORE = 2,767 CY

STRIP AND STOCKPILE TOPSOIL 6", REMOVE BORROW

MATERIAL, REPLACE WITH EXCESS SOIL EXCAVATED FROM

WETLAND POOL AREA AND RE-SPREAD TOPSOIL. RESTORE

AREA OUTSIDE OF PROPOSED GRADING TO ORIGINAL GRADES

ACCESS ROUTE

PROTECT EXISTING TILE

WITHIN BORROW AREA (TYP.)

REMOVE AND REPLACE 20 LF

SECTION OF BARBED-WIRE FENCE

- SEE DETAIL

TRANSITION WATERWAY

INTO FOREBAY

- SEE C305

EXISTING CONTOUR - MAJOR

EXISTING CONTOUR - MINOR

EXISTING STREAM

PROPOSED LINE TYPEDESCRIPTION

TOP OF DAM ELEVATION

NORMAL WATER ELEVATION

MAJOR CONTOUR

MINOR CONTOUR

PROPOSED DUAL WALL TILE

EXISTING TILE (5")

LEGEND

D R

O R

D B

O O

T N

N O

Pr in te d: C201

O R

-1

C W

N D

, I

\U se rs

\G Kr ich el

\D C\

oc s\

Sh ive

-H at te ry

, I nc

-\2

S- W

\P ro je ct

F ile s\ Sh ive -H at te ry \1

_C ivi l\C

- G

dw g

100-YR STORM BOUNCE

NORTH

EASEMENT BOUNDARY

A B C D E F

W es to w n Pk w y, S ui te

W es t D es

M oi ne s, Io w a

w w w

.s hi ve -h at te ry .c om

Io w a

Il lin oi s

In di an a

N eb ra sk a

W is co ns in

IOWA D

A R

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A G R I C U L T URE

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TILE NOTES

1. THE INVERT ELEVATIONS AND SLOPES FOR PROPOSED DRAIN

TILES ON THIS PLAN ARE BASED ON ASSUMED DEPTHS OF

EXISTING DRAIN TILES. CONTRACTOR TO LOCATE AND

CONNECT PROPOSED DRAIN TILES TO EXISTING TILES

WHERE FEASIBLE. COORDINATE WITH ENGINEER.

2. INTERCEPT ALL CROSSING TILES AND CAP DOWNSTREAM

ENDS.

3. MAINTAIN A MINIMUM OF 3' OF COVER OVER TOP OF

PROPOSED TILES AND A MINIMUM SLOPE OF 0.50%.

WETLAND PARAMETERS

DRAINAGE AREA = 285.1 ACRES

NORMAL POOL AREA = 2.40 ACRES

SA/DA RATIO = 0.84%

WETLAND HYDRAULIC PARAMETERS

TOP OF BERM ELEVATION = 1159.00

100-YEAR STORM ELEVATION = 1157.10

NORMAL WATER ELEVATION = 1154.10

STORAGE AT NWL = 2.80 ACRE-FEET

STORAGE AT TOP OF DAM = 18.87 ACRE-FEET

EXISTING TILE (4")

8:1

17:1

11:1

17:1

90 11 95 12

SPOIL AREA

AREA = 1.9 ACRES

D R

O R

D B

O O

T N

N O

Pr in te d: C202

O R

-1

C W

N D

, I

\U se rs

\G Kr ich el

\D C\

oc s\

Sh ive

-H at te ry

, I nc

-\2

S- W

\P ro je ct

F ile s\ Sh ive -H at te ry \1

_C ivi l\C

- G

dw g

NORTH

A B C D E F

W es to w n Pk w y, S ui te

W es t D es

M oi ne s, Io w a

w w w

.s hi ve -h at te ry .c om

Io w a

Il lin oi s

In di an a

N eb ra sk a

W is co ns in

IOWA D

A R

E NT O F

A G R I C U L T URE

L A

TEWARDSHIP

EXISTING CONTOUR - MAJOR

EXISTING CONTOUR - MINOR

EXISTING STREAM

PROPOSED LINE TYPEDESCRIPTION

TOP OF DAM ELEVATION

NORMAL WATER ELEVATION

MAJOR CONTOUR

MINOR CONTOUR

PROPOSED DUAL WALL TILE

EXISTING TILE (5")

LEGEND

100-YR STORM BOUNCE

EASEMENT BOUNDARY

EXISTING TILE (4")

121012

X X

C O

N O

R D

SCARIFY 9" BELOW, REPLACE 9" &

COMPACT WITHIN AREAS OF

BORROW WITHIN POOL AREA

SCARIFY 9" & RE-COMPACT

WITHIN ENTIRE POOL AREA

PROPOSED ESTIMATED BORROW AREA BASED ON 24" OF

SUITABLE MATERIAL FOR EMBANKMENT CONSTRUCTION

ESTIMATED QUANTITY OF COHESIVE MATERIAL NEEDED

TO CONSTRUCT EMBANKMENT AND DAM CORE = 2,767 CY

SPOIL AREA

D R

O R

D B

O O

T N

N O

Pr in te d: C203

T-

N G

O R

-1

C W

N D

, I

\U se rs

\G Kr ich el

\D C\

oc s\

Sh ive

-H at te ry

, I nc

-\2

S- W

\P ro je ct

F ile s\ Sh ive -H at te ry \1

_C ivi l\C

- G

dw g

AM N

A B C D E F

W es to w n Pk w y, S ui te

W es t D es

M oi ne s, Io w a

w w w

.s hi ve -h at te ry .c om

Io w a

Il lin oi s

In di an a

N eb ra sk a

W is co ns in

IOWA D

A R

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A G R I C U L T URE

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ELEVATIONS TABLE

CUT/FILL

MINIMUM

ELEVATION (FT)

MAXIMUM

ELEVATION (FT) COLOR

CUT -8 -7

CUT -7 -6

CUT -6 -5

CUT -5 -4

CUT -4 -3

CUT -3 -2

CUT -2 -1

CUT -1 0

FILL 0 1

FILL 1 2

FILL 2 3

FILL 3 4

FILL 4 5

FILL 5 6

FILL 6 7

FILL 7 8

FILL 8 9

FILL 9 10

EARTHWORK TABLE

CLASSIFICATION CY

EXCAVATION (GENERAL) 795

EARTHFILL (GENERAL) 4,702

EARTHFILL (GENERAL DAM) 903

EARTHFILL (DAM CORE) 1,864

NOTE: A 20% SHRINKAGE FACTOR WAS ASSUMED FOR EARTHWORK.

0+00

1+00

2+00

3+00

4+00

4+50

TOP OF EMBANKMENT

TOP WIDTH = 10 FEET

ELEVATION = 1159.00

SHEET PILE STRUCTURE

CREST WIDTH = 40 FEET

TOTAL WIDTH = 89.4 FEET

CREST ELEVATION = 1154.10

- SEE SHEET C401

EMBANKMENT

CENTERLINE ALIGNMENT

0+00.00 1+00.00 2+00.00 3+00.00 4+00.00 4+50.00

SHEET PILE STRUCTURE

- SEE SHEET C401

NORMAL WATER LEVEL

ELEVATION = 1154.10

PROPOSED TOP OF EMBANKMENT

ELEVATION = 1159.00

OVERBUILD EMBANKMENT TO

ACCOUNT FOR FUTURE SETTLEMENT

ELEVATION = 1159.50

40 FEET

PROPOSED

GROUND (TYP.)

EXISTING GROUND (TYP.)

10.00' 10.00'69.40'

89.40'

CORE TRENCH

- SEE DETAIL

SHEET PILE CREST

ELEVATION = 1154.10

1' OVERBUILT 50 FEET EACH SIDE

OF SHEET PILE STRUCTURE

D R

O R

D B

O O

T N

N O

Pr in te d: C301

O R

-1

C W

N D

, I

\U se rs

\G Kr ich el

\D C\

oc s\

Sh ive

-H at te ry

, I nc

-\2

S- W

\P ro je ct

F ile s\ Sh ive -H at te ry \1

_C ivi l\C

- P

.d wg 8/

NORTH

A B C D E F

W es to w n Pk w y, S ui te

W es t D es

M oi ne s, Io w a

w w w

.s hi ve -h at te ry .c om

Io w a

Il lin oi s

In di an a

N eb ra sk a

W is co ns in

IOWA D

A R

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A G R I C U L T URE

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HORIZONTAL SCALE:

VERTICAL SCALE:

0+00

1+00 2+00 2+50

X X

PRINCIPAL SPILLWAY

CENTERLINE ALIGNMENT

SHEET PILE STRUCTURE

CREST WIDTH = 40 FEET

TOTAL WIDTH = 89.4 FEET

CREST ELEVATION = 1154.10

- SEE SHEET C401

0+00.00 1+00.00 2+00.00 2+50.00

2.7%

NORMAL WATER LEVEL

ELEVATION = 1154.10

SHEET PILE CREST

ELEVATION = 1154.10

GROUTED RIP RAP STILLING BASIN. PLACE 440 TONS OF CLASS E

RIP RAP 2' THICK OVER NON-WOVEN GEOTEXTILE FABRIC. GROUT

IN PLACE WITH 93 CY CONCRETE GROUT. GROUT SHALL LOCK IN

BASE OF RIP RAP LEAVING A ROUGH SURFACE FOR ENERGY

DISSIPATION. DO NOT CREATE A SMOOTH SURFACE WITH GROUT.

SHEET PILE BOTTOM

ELEVATION = 1137.00

PROPOSED GROUND (TYP.)

EXISTING GROUND (TYP.)

110 TONS OF CLASS 'E' REVETMENT OVER

NON-WOVEN GEOTEXITLE FABRIC AND GROUT IN

PLACE WITH 22 CY CONCRETE GROUT. TOP OF

REVETMENT TO BE 0.1' LOWER THAN SHEET PILE

CREST - GROUT SURFACE SHALL BE SMOOTH

77 FEET

TOP OF CONOVER RD

ELEV = 1156.10

PROPOSED BOTTOM

OF PLUNGE POOL

ELEV = 1148.70

EXISTING 4' X 5' RCP

BOX CULVERT

IE = 1147.15

IE = 1138.26

D R

O R

D B

O O

T N

N O

Pr in te d: C302

O R

-1

C W

N D

, I

\U se rs

\G Kr ich el

\D C\

oc s\

Sh ive

-H at te ry

, I nc

-\2

S- W

\P ro je ct

F ile s\ Sh ive -H at te ry \1

_C ivi l\C

- P

.d wg 8/

N O

A B C D E F

W es to w n Pk w y, S ui te

W es t D es

M oi ne s, Io w a

w w w

.s hi ve -h at te ry .c om

Io w a

Il lin oi s

In di an a

N eb ra sk a

W is co ns in

IOWA D

A R

E NT O F

A G R I C U L T URE

L A

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4:1

60 11

8:1

0+00

1+00

1+50

DRAWDOWN PIPE B - 18" CMP

49 LF @ 0.00%

DRAWDOWN PIPE A - 18" CMP

67 LF @ 0.00%

DRAWDOWN

CENTERLINE ALIGNMENT

WATER CONTROL STRUCTURE (48" CMP)

RIM = 1160.00

IE = 1149.00 18" CMP

DRAWDOWN RISER (24" CMP)

RIM = 1153.60

IE = 1149.00 18" CMP

IE = 1149.00

15 TONS CLASS 'E' RIP RAP MOUNDED

AROUND INTAKE RISER. PLACE WITH CARE

TO ENSURE INTEGRITY OF CMP PIPE

STOP LOG STORAGE

STRUCTURE

- SEE DETAIL

0+00.00 1+00.00 1+50.00

15 TONS CLASS 'E' RIP RAP MOUNDED

AROUND INTAKE RISER. PLACE WITH CARE

TO ENSURE INTEGRITY OF CMP PIPE

DRAWDOWN RISER (24" CMP)

RIM = 1153.60

IE = 1149.00 18" CMP

DRAWDOWN PIPE A - 18" CMP

67 LF @ 0.00%

WATER CONTROL STRUCTURE (48" CMP)

RIM = 1160.00

IE = 1149.00 18" CMP

DRAWDOWN PIPE B - 18" CMP

49 LF @ 0.00%

8.00'

CORE TRENCH

- SEE DETAIL

PROPOSED GROUND (TYP.)

EXISTING GROUND (TYP.)

IE = 1149.00

6' X 6' CMP

ANTI-SEEP COLLARS

- SEE DETAIL

NORMAL WATER LEVEL

ELEV = 1154.10

6' X 6' CMP

ANTI-SEEP COLLARS

- SEE DETAIL

7' X 7' REINFORCED

CONCRETE BASE

- SEE DETAIL

6' X 6' REINFORCED

CONCRETE BASE

- SEE DETAIL

GROUTED RIPRAP

PLUNGE POOL

- SEE C302

INSTALL STOP LOGS TO 1153.10

(1.0' BELOW NWL FOR VEGETATION

ESTABLISHMENT PERIOD)

D R

O R

D B

O O

T N

N O

Pr in te d: C303

O R

-1

C W

N D

, I

\U se rs

\G Kr ich el

\D C\

oc s\

Sh ive

-H at te ry

, I nc

-\2

S- W

\P ro je ct

F ile s\ Sh ive -H at te ry \1

_C ivi l\C

- P

.d wg 8/

N O

A B C D E F

W es to w n Pk w y, S ui te

W es t D es

M oi ne s, Io w a

w w w

.s hi ve -h at te ry .c om

Io w a

Il lin oi s

In di an a

N eb ra sk a

W is co ns in

IOWA D

A R

E NT O F

A G R I C U L T URE

L A

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2+00

3+00

4+00 5+00 6+00

7+00

FOREBAY CENTERLINE

ALIGNMENT

FOREBAY INLET PROTECTION

30 TONS CLASS 'E' RIPRAP

FOREBAY OUTLET PROTECTION

40 TONS CLASS 'E' RIPRAP

EAST WATERWAY CONNECTION

- SEE C305

2+00.00 3+00.00 4+00.00 5+00.00 6+00.00 7+00.00

2.5% 25.0%

.0%

FOREBAY OUTLET PROTECTION

40 TONS CLASS 'E' RIPRAP

EXISTING

GRADE (TYP.)

PROPOSED

GRADE (TYP.)

WETLAND NORMAL

WATER LEVEL

ELEV = 1154.10

FOREBAY INLET PROTECTION

30 TONS CLASS 'E' RIPRAP

D R

O R

D B

O O

T N

N O

Pr in te d: C304

O R

-1

C W

N D

, I

\U se rs

\G Kr ich el

\D C\

oc s\

Sh ive

-H at te ry

, I nc

-\2

S- W

\P ro je ct

F ile s\ Sh ive -H at te ry \1

_C ivi l\C

- P

.d wg 8/

N O

A B C D E F

W es to w n Pk w y, S ui te

W es t D es

M oi ne s, Io w a

w w w

.s hi ve -h at te ry .c om

Io w a

Il lin oi s

In di an a

N eb ra sk a

W is co ns in

IOWA D

A R

E NT O F

A G R I C U L T URE

L A

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0+00 1+00 1+50

EAST WATERWAY

CENTERLINE ALIGNMENT

EAST WATERWAY

OUTLET PROTECTION

200 TONS CLASS 'E' RIPRAP

0+00.00 0+50.00

EAST WATERWAY

OUTLET PROTECTION

200 TONS CLASS 'E' RIPRAP

EXISTING

GRADE (TYP.)

PROPOSED

GRADE (TYP.)

0+00 0+50

EAST WATERWAY CROSS

SECTION ALIGNMENT

EAST WATERWAY

OUTLET PROTECTION

180 TONS C;ASS 'E' RIPRAP

0+00.00 1+00.00 1+50.00

2.3%

10.0%

EAST WATERWAY

OUTLET PROTECTION

200 TONS CLASS 'E' RIPRAP

EXISTING

GRADE (TYP.)

PROPOSED

GRADE (TYP.)

WETLAND NORMAL

WATER LEVEL

ELEV = 1154.10

D R

O R

D B

O O

T N

N O

Pr in te d: C305

O R

-1

C W

N D

, I

\U se rs

\G Kr ich el

\D C\

oc s\

Sh ive

-H at te ry

, I nc

-\2

S- W

\P ro je ct

F ile s\ Sh ive -H at te ry \1

_C ivi l\C

- P

.d wg 8/

NORTH

A B C D E F

W es to w n Pk w y, S ui te

W es t D es

M oi ne s, Io w a

w w w

.s hi ve -h at te ry .c om

Io w a

Il lin oi s

In di an a

N eb ra sk a

W is co ns in

IOWA D

A R

E NT O F

A G R I C U L T URE

L A

TEWARDSHIP

HORIZONTAL SCALE:

VERTICAL SCALE:

N O

0+00

1+00

2+00

3+00

1.3 - 6" HDPE (NON-PERFORATED)

156 LF @ 0.76%

START IE = 1156.6

END IE = 1155.4

1.2 - 6" HDPE (NON-PERFORATED)

20 LF @ 0.76%

START IE = 1155.4

END IE = 1155.2

1.1 - 8" CMP OUTLET

20 LF @ 0.53%

START IE = 1155.2

END IE = 1155.1

PLACE 10 TONS CLASS 'E' RIPRAP

0+00.00 1+00.00 2+00.00 3+00.00

-33.33%

-0.76%

1.3 - 6" HDPE (NON-PERFORATED)

156 LF @ 0.76%

START IE = 1156.6

END IE = 1155.4

1.2 - 6" HDPE (NON-PERFORATED)

20 LF @ 0.76%

START IE = 1155.4

END IE = 1155.2

1.1 - 8" CMP OUTLET

20 LF @ 0.53%

START IE = 1155.2

END IE = 1155.1

PLACE 10 TONS CLASS 'E' RIPRAP

CONNECT TO EXISTING

4" HDPE FIELD TILE

0+00.00 1+00.00 2+00.00 3+00.00 3+50.00

-1.53%

-33.33%3.4 - 8" HDPE (NON-PERFORATED)

62 LF @ 0.56%

START IE = 1158.0

END IE = 1157.6

3.2 - 8" HDPE (NON-PERFORATED)

7 LF @ 1.53%

START IE = 1155.5

END IE = 1155.4

DITCH RISER (10" HICKENBOTTOM)

TOP = 1164.00

DITCH FL = 1161.00

IE = 1158.00 - 8" HDPE (NON-PERFORATED)

3.1 - 10" CMP OUTLET

20 LF @ 1.53%

START IE = 1155.4

END IE = 1155.1

PLACE 10 TONS CLASS 'E' RIPRAP

CONNECT TO EXISTING

1" STEEL SPRINGHEAD

3.3 - 8" HDPE (NON-PERFORATED)140 LF @ 1.53%START IE = 1157.6END IE = 1155.5

4:1

1165 11

DITCH RISER (10" HICKENBOTTOM)

TOP = 1164.00

DITCH FL = 1161.00

IE = 1158.00 - 8" HDPE (NON-PERFORATED)

DITCH RE-ROUTE

- SEE SHEET C307

3.4 - 8" HDPE (NON-PERFORATED)

62 LF @ 0.56%

START IE = 1158.0

END IE = 1157.6

3.2 - 8" HDPE (NON-PERFORATED)

7 LF @ 1.53%

START IE = 1155.5

END IE = 1155.4

3.1 - 10" CMP OUTLET

20 LF @ 1.53%

START IE = 1155.4

END IE = 1155.1

PLACE 10 TONS CLASS 'E' RIPRAP

CONNECT TO EXISTING 1"

STEEL SPRINGHEAD

APPROXIMATE IE = 1157.6

3.3 - 8" HDPE (NON-PERFORATED)

140 LF @ 1.53%

START IE = 1157.6

END IE = 1155.5

D R

O R

D B

O O

T N

N O

Pr in te d: C306

O R

-1

C W

N D

, I

\U se rs

\G Kr ich el

\D C\

oc s\

Sh ive

-H at te ry

, I nc

-\2

S- W

\P ro je ct

F ile s\ Sh ive -H at te ry \1

_C ivi l\C

- P

.d wg 8/

A B C D E F

W es to w n Pk w y, S ui te

W es t D es

M oi ne s, Io w a

w w w

.s hi ve -h at te ry .c om

Io w a

Il lin oi s

In di an a

N eb ra sk a

W is co ns in

IOWA D

A R

E NT O F

A G R I C U L T URE

L A

TEWARDSHIP

HORIZONTAL SCALE:

VERTICAL SCALE:

N O

HORIZONTAL SCALE:

NORTH

0+00.00 1+00.00

EXISTING GROUND (TYP.)

PROPOSED GROUND (TYP.)

DITCH RISER (10" HICKENBOTTOM)

TOP = 1164.00

DITCH FL = 1161.00

IE = 1158.00 - 8" HDPE (NON-PERFORATED)

RIPRAP EDGE

ELEV = 1163.0

RIPRAP EDGE

ELEV = 1163.0

EDGE OF GRAVEL

ELEV = 1163.7

X X

0+00 1+00

DITCH RISER (10" HICKENBOTTOM)

TOP = 1164.00

DITCH FL = 1161.00

IE = 1158.00 - 8" HDPE (NON-PERFORATED)

40 TONS CLASS

'E' RIPRAP

EDGE OF

GRAVEL

CONOVER RD

CENTERLINE

RIPRAP TO

ELEVATION OF 1163.0

UPSTREAM CROSS

SECTION ALIGNMENT

DOWNSTREAM CROSS

SECTION ALIGNMENT

RIPRAP CHANNEL CREST

ELEV = 1162.0

REMOVE AND REPLACE 20 LF

OF BARBED-WIRE FENCE

- SEE DETAIL

X X X X X X X X X X X X X X X X X X X X X X X X X X

0+00 1+00

DITCH RISER (10" HICKENBOTTOM)

TOP = 1164.00

DITCH FL = 1161.00

IE = 1158.00 - 8" HDPE (NON-PERFORATED)

CONOVER RD

CENTERLINE

GRADING LIMITS (TYP.)

40 TONS CLASS

'E' RIPRAP

EDGE OF

GRAVEL

0+00.00 1+00.00

DITCH RISER (10" HICKENBOTTOM)

TOP = 1164.00

DITCH FL = 1161.00

IE = 1158.00 - 8" HDPE (NON-PERFORATED)

RIPRAP DITCH

CHECK CREST

ELEV = 1162.0

40 TONS CLASS

'E' RIPRAP

EXISTING GROUND (TYP.)

6.00'

0+00.00 1+00.00

EXISTING GROUND (TYP.)

RIPRAP EDGE

ELEV = 1163.0

RIPRAP EDGE

ELEV = 1163.0

EDGE OF GRAVEL

ELEV = 1163.7

RIPRAP DITCH

CHECK CREST

ELEV = 1162.0

D R

O R

D B

O O

T N

N O

Pr in te d: C307

-R O

O R

-1

C W

N D

, I

\U se rs

\G Kr ich el

\D C\

oc s\

Sh ive

-H at te ry

, I nc

-\2

S- W

\P ro je ct

F ile s\ Sh ive -H at te ry \1

_C ivi l\C

- P

.d wg 8/

A B C D E F

W es to w n Pk w y, S ui te

W es t D es

M oi ne s, Io w a

w w w

.s hi ve -h at te ry .c om

Io w a

Il lin oi s

In di an a

N eb ra sk a

W is co ns in

IOWA D

A R

E NT O F

A G R I C U L T URE

L A

TEWARDSHIP

HORIZONTAL SCALE:

VERTICAL SCALE:

NORTH

HORIZONTAL SCALE:

VERTICAL SCALE:

UPSTREAM CROSS SECTION DOWNSTREAM CROSS SECTION

HORIZONTAL SCALE:

VERTICAL SCALE:

N O

2+00

3+00

4+00 5+00 6+00 7+00

8+00

9+00

10+00

11+00

12+00 13+00

14+00 15+00

4:1

1155 11541154

1157 1158

60 11

8:1

X X

0+00 1+00WETLAND CENTERLINE

ALIGNMENT

2+00.00 3+00.00 4+00.00 5+00.00 6+00.00 7+00.00 8+00.00 9+00.00 10+00.00 11+00.00 12+00.00 13+00.00 14+00.00 15+00.00 16+00.00

2.5%

25.0%

FOREBAY INLET

CHANNEL PROTECTION

FOREBAY OUTLET

CHANNEL PROTECTION

WETLAND FOREBAY

- SEE C304

PROPOSED BOTTOM

OF WETLAND (TYP.)

SUBMERGED BERMS

TOP WIDTH = 20 FEET

ELEV = 1153.60

EXISTING

GROUND (TYP.)

PROPOSED

GROUND (TYP.)

EMBANKMENT

- SEE C301 AND C302

WETLAND NORMAL

WATER LEVEL

ELEV = 1154.10

GROUTED RIPRAP

PLUNGE POOL UPSTREAM

PROTECTION

GROUTED RIPRAP PLUNGE

POOL DOWNSTREAM

PROTECTION

EXISTING 4' X 5' RCP

BOX CULVERT

D R

O R

D B

O O

T N

N O

Pr in te d: C308

O R

-1

C W

N D

, I

\U se rs

\G Kr ich el

\D C\

oc s\

Sh ive

-H at te ry

, I nc

-\2

S- W

\P ro je ct

F ile s\ Sh ive -H at te ry \1

_C ivi l\C

- P

.d wg 8/

N O

A B C D E F

W es to w n Pk w y, S ui te

W es t D es

M oi ne s, Io w a

w w w

.s hi ve -h at te ry .c om

Io w a

Il lin oi s

In di an a

N eb ra sk a

W is co ns in

IOWA D

A R

E NT O F

A G R I C U L T URE

L A

TEWARDSHIP

1+25.00 2+00.00 3+00.00 3+25.00

TOP OF BERM

ELEV = 1159.00

PROPOSED DOWNSTREAM GRADES

BOTTOM OF PLUNGE POOL

ELEV = 1148.70

EXISTING GRADE

SHEET PILE WEIR

1,403 SF AFTER TRIMMING

WEIR CREST

ELEV = 1154.10

PROPOSED BOTTOM OF

SHEET PILE

ELEVATION = 1137.00

89.40'

D D

.7 F

10.00'10.00'

D R

O P

G H

40.00'

24.70'24.70'

L D

.1 F

OVERBUILD EMBANKMENT 1

FOOT ON EACH SIDE OF SHEET

PILE TO AN ELEVATION OF

1160.00, 50 FEET WIDE

50 FEET 50 FEET

BOLTED WALER OPTION DETAIL

C401

SHEET PILE GENERAL NOTES:

SHEET PILE CENTERLINE PROFILE

B B

B - B

*NOTE: SHEET PILE BEYOND NOT SHOWN.

1. DESIGN SHEET PILE AREA IS 1,403 SF AFTER TRIMMING

2. SHEET PILING REQUIREMENTS DESIGN BASIS - SKYLINE STEEL/NUCOR SCZ 20 OR ENGINEER APPROVED EQUAL

2.1. MINIMUM SECTION MODULUS OF 31.69 IN3 PER FOOT OF WALL.

2.2. MINIMUM GRADE OF STEEL IS 50 KSI

2.3. MINIMUM MOMENT OF INERTIA OF 253.51 IN4 PER FOOT OF WALL.

2.4. MINIMUM THICKNESS OF 0.315"

2.5. ALL SHEET PILING SHALL MEET ASTM A-572 GR50.

2.6. ALL BOLTS SHALL MEET ASTM A307 GRADE A.

2.7. ALL WASHERS SHALL MEET ASTM F436.

2.8. ALL NUTS SHALL MEET ASTM A563.

3. CONTRACTOR SHALL SUBMIT DETAILED SHOP DRAWINGS OF PROPOSED SHEET PILE SYSTEM FOR APPROVAL

BY ENGINEER.

4. SHEET PILE ATTACHMENT TO WALER:

4.1. SHEET PILE WALER/PILE CAP MAY BE BOLTED OR WELDED. SEE DETAILS FOR OPTIONS.

4.2. BOLTED WALER OPTION

4.2.1. ALL BOLTS WILL BE 1'' DIAMETER WITH 2 WASHERS. BOLT SHALL BE EXTENDED AT A MINIMUM OF 3 8 ''

BEYOND THE NUT.

4.2.2. ALL HOLES SHALL BE FIELD DRILLED TO 1 1

16" DIAMETER. TORCH, PLASMA CUTTING, OR OTHER

METHODS RESULTING IN AN IMPERFECT HOLE WILL NOT BE PERMITTED.

4.2.3. THE WALER SHALL BE PLACED ON THE DOWNSTREAM SIDE OF THE WEIR.

4.3. WELDED PILE CAP OPTION

4.3.1. AT THE CONTRACTORS OPTION, A WELDED PILE CAP MAY BE INSTALLED IN LIEU OF THE BOLTED

WALER. SEE PILE CAP OPTION DETAIL.

4.3.2. WELDING SHALL BE IN ACCORDANCE WITH THE STRUCTURAL WELDING CODE, AWS D1.1, LATEST

EDITION, AND SHALL BE PERFORMED BY CERTIFIED WELDERS ONLY USING E70XX ELECTRODES.

5. ANY HOLES LEFT IN SHEET PILE SHALL BE CLOSED OFF.

6. AFTER SHEETING AND WALER INSTALLATION, ALL SHEETING IS TO BE CUT TO CONFORM WITH THE 3:1 SIDE SLOPE OF THE WEIR, MEET DESIGN ELEVATIONS, AND TO REMOVE ANY DAMAGE CAUSED BY DRIVING.

7. STRUCTURAL STEEL SHALL BE FABRICATED AND ERECTED IN ACCORDANCE WITH THE LATEST SPECIFICATION OF AISC. FABRICATOR SHALL SUBMIT SHOP DRAWINGS AND FABRICATE AFTER ENGINEER'S REVIEW AND

APPROVAL.

8. IT IS THE CONTRACTOR'S RESPONSIBILITY TO DETERMINE ALLOWABLE CONSTRUCTION LIVE LOADS.

9. PROVIDE ALL NECESSARY TEMPORARY BRACING, SHORING, GUYING, OR OTHER MEANS TO AVOID EXCESSIVE

STRESSES AND TO HOLD STRUCTURAL ELEMENTS IN PLACED DURING CONSTRUCTION.

10. A TEMPORARY BERM TO HOLD / GUIDE SHEETPILE DURING CONSTRUCTION IS RECOMMENDED.

11. NOTIFY ENGINEER IMMEDIATELY IF BEDROCK IS ENCOUNTERED PRIOR TO INSTALLATION OF SHEET PILE TO

DESIGN DEPTHS.

SECTION E-E

WELDED PILE CAP OPTION DETAIL

C401

SHEET PILE SPLICEC10X15.3 WALER

1" DIAMETER BOLT WITH 2

WASHERS. 1 BOLT TO BE PLACED

ON EACH SIDE OF SPLICE

C10X15.3 WALER

1 116'' DIAMETER HOLE (BOLTED OPTION)

WALER SPLICE

4" FILLET WELD

ALL AROUND

PL 3 8x8x8

MITER CUT AND

WELD PILE CAP

AT TRAPEZOIDAL

WEIR CORNERS

FILLET WELD EACH

SHEET PILE SECTION

TO CAP ANGLE.

PL 38 X 2 X CONTINUOUS

(2) L5 X 5 X 38 STEEL

ANGLES ALONG ENTIRE

SHEET PILE LENGTH.

16" FILLET WELD,

CONTINUOUS, BOTH SIDES

A B C D E F

W es to w n Pk w y, S ui te

W es t D es

M oi ne s, Io w a

w w w

.s hi ve -h at te ry .c om

Io w a

Il lin oi s

In di an a

N eb ra sk a

W is co ns in

IOWA D

A R

T M

EN T O F

A G R I C U L T UR E

L A

TEWARDSHIP

D R

O R

D B

O O

T N

N O

Pr in te d: C401

N G

O R

-1

C W

N D

, I

\U se rs

\G Kr ich el

\D C\

oc s\

Sh ive

-H at te ry

, I nc

-\2

S- W

\P ro je ct

F ile s\ Sh ive -H at te ry \1

_C ivi l\C

.d wg

AM HORIZONTAL SCALE:VERTICAL SCALE:

EXISTING SOIL SURFACE

16" HOLES LOCATED AS SHOWN,

PRE-PUNCHED BY SIGN

FABRICATOR. FASTEN SIGN TO

POSTS WITH 3/8" DIA. STEEL BOLT &

NUT SET, SEE BOLT, WASHER, &

NUT FASTENER DETAIL THIS SHEET

(4 SETS REQ'D. PROVIDED AND

INSTALLED BY CONTRACTOR).

SIGN PANEL TO BE 0.080" THICK

ALUMINUM SUBSTRATE WITH 3M (OR

EQUAL) ENGINEER GRADE REFLECTIVE

SHEETING. SIGN PANELS FURNISHED BY

THE DIVISION OF SOIL CONSERVATION.

SIGN PANEL INSTALLED BY CONTRACTOR.

BACKFILL WITH CONCRETE

(PREFERRED), CLEAN STONE

(ACCEPTABLE), OR HAND-TAMPED

EARTH IN SMALL LIFTS (SUBJECT

TO ENGINEER'S APPROVAL)

2 EACH OF 4"x4"x12'

PRESSURE-TREATED POST

(TYP.). POSTS SEALED WITH

THOMPSON'S WATER SEAL OR

EQUAL. POSTS, SEALANT, AND

INSTALLATION PROVIDED BY

CONTRACTOR.

SIGNAGE NOTES:

1. DIVISION WILL FURNISH SIGN PANEL. CONTRACTOR IS RESPONSIBLE FOR PROVIDING POSTS, HARDWARE, AND INSTALLATION.

2. ALL EXPOSED WOOD SHALL BE SEALED WITH THOMPSON'S WATER SEAL OR EQUAL MEETING ASTM D-4446-08.

3. ALL STEEL HARDWARE PIECES SHALL BE GALVANIZED OR RUST RESISTANT.

4. NYLON AND STEEL WASHERS SHALL BE USED AS SHOWN ON THE BOLT, WASHER, NUT FASTENER

DETAIL ABOVE.

5. CLEAR UTILITIES WITH IOWA ONE-CALL (800) 292-8989 BEFORE EXCAVATING FOR POSTS.

6. SECURE DIVISION AND LANDOWNER APPROVAL FOR SIGN LOCATION BEFORE INSTALLATION.

7. COSTS FOR POSTS, HARDWARE, WOOD SEALANT AND SIGN INSTALLATION SHALL BE INCIDENTAL TO

MOBILIZATION.

8. CONTRACTOR SHALL INSTALL SIGN POSTS USING A PLYWOOD OR OTHER SUITABLE TEMPLATE TO MAINTAIN ACCURATE POST SPACING AND ALIGNMENT DURING BACKFILLING OF THE POST HOLES. TO AVOID BENDING OF THE SIGN PANELS, POSTS SHALL NOT BE INSTALLED OR BACKFILLED WITH SIGN

PANELS ATTACHED.

9. ONE (1) PROJECT SIGN IS REQUIRED UNLESS NOTED OTHERWISE.

TOP

PANEL

30"

48" 9"

3" (T

BOLT, WASHER, &

NUT

FASTENER DETAIL

NOT TO SCALE

STEEL

WASHER

HEAD

NYLON WASHER

AGAINST FACE OF SIGN

STEEL WASHER

BACK OF POST NUT

G N

D R

O R

D B

O O

T N

N O

Pr in te d: C501

S G

O R

-1

C W

N D

, I

\U se rs

\G Kr ich el

\D C\

oc s\

Sh ive

-H at te ry

, I nc

-\2

S- W

\P ro je ct

F ile s\ Sh ive -H at te ry \1

_C ivi l\C

- C

dw g 8/

A B C D E F

W es to w n Pk w y, S ui te

W es t D es

M oi ne s, Io w a

w w w

.s hi ve -h at te ry .c om

Io w a

Il lin oi s

In di an a

N eb ra sk a

W is co ns in

IOWA D

A R

E NT O F

A G R I C U L T URE

L A

TEWARDSHIP

NWL = 1154.10

PROPOSED GROUND

EXISTING GROUND (VARIES)

ELEV = 1153.85

10' MINIMUM

REFER TO GRADING PLAN

WAVE BENCH

A1 WAVE PROTECTION BENCH AT NWL

ELEV = 1154.35

MATCH INVERTS

2D INSTALL APPROPRIATELT SIZED FERNCO OR

APPROVED EQUIVALENT COUPLER AND

CONCRETE COLLAR OF 3,000 PSI MINIMUM STRENGTH

CONCRETE, MINIMUM 2D WIDE CENTERED ON JOINT,

MIN 6'' THICKNESS FOR FULL 2D WIDTH. THICKNESS

CAN TAPER DOWN BEYOND THE 2D WIDTH.

FlowFlow

NEW SECTION OF TILE

EXISTING TILE

A2 FIELD TILE REPAIR CONNECTION

A4 PROJECT SIGN

A2 FIELD TILE REPAIR CONNECTION

MAX.

E G

PROPOSED GRADE

HAND-PLACED

MATERIAL, NO ROCKS.

TAMP IN LIFTSPERFORATED DUAL WALL

HDPE PIPE

SLOPE CONTINUOUSLY

TOWARD OUTLET

BACKFILL WITH

EXCAVATED

MATERIAL AND

COMPACT IN LIFTS

D 6" 8"

W MAX.

24" 24"

10" 24" 12" 36" 18" 36"

TRASH RACK (BAR GUARD)

10" DIAMETER INTAKE

STRAW WATTLE AROUND

PERIMETER

GRADE SHOWN ON

CROSS SECTIONS

PROPOSED GRADE

SECURE WITH 4

RUST RESISTANT

SCREWSNON-PERFORATED

SECTION

CONCRETE JOINT

SEAL

INTAKE TEE - SIZE

TO MATCH

DIAMETER OF

OUTLET PIPE

INCOMING PIPE,

OR CAP WHERE

NEEDED

CHANNEL ELEVATION

TERRACE FLOWLINE ELEVATION

INSTALL (3) 6.0' LONG

POSTS AROUND RISERS24"

D4 HICKENBOTTOM RISER

D2 TILE OUTLET AT WETLAND

A 15'

PLAN VIEW

SECTION "A"

1.5' 1.5'

EXISTING GROUND

TIE INTO EXISTING TILE AS DETAILED

- FIELD VERIFY LOCATION AND DEPTHS

NWL = 1154.10

PROPOSED GROUND

LAST 20 LF SHALL BE CMP

WITH RODENT GUARD

1 SIZE LARGER THAN PROPOSED TILE

PE FIELD TILE -

SEE PLANS FOR LENGTHS AND

LOCATIONS

PROPOSED GROUND

CONCRETE CONNECTION

MATCH INVERTS

IE = 1155.10

NON-WOVEN

GEOTEXTILE FABRIC

CLASS 'E' RIPRAP

CMP OUTLET PIPE

CLASS 'E' RIPRAP

TOP OF RIPRAP

= 1156.10

RIPRAP OUTLET PROTECTION

STILLING BASIN

NON-WOVEN

GEOTEXTILE FABRIC

O R

D B

O O

T N

N O

Pr in te d: C502

S G

O R

-1

C W

N D

, I

\U se rs

\G Kr ich el

\D C\

oc s\

Sh ive

-H at te ry

, I nc

-\2

S- W

\P ro je ct

F ile s\ Sh ive -H at te ry \1

_C ivi l\C

- C

dw g 8/

A B C D E F

W es to w n Pk w y, S ui te

W es t D es

M oi ne s, Io w a

w w w

.s hi ve -h at te ry .c om

Io w a

Il lin oi s

In di an a

N eb ra sk a

W is co ns in

IOWA D

A R

E NT O F

A G R I C U L T URE

L A

TEWARDSHIP

2.00''

0.75''

NOTE:

ALL ALUMINUM OR PVC STOP-LOGS SHALL BE PROVIDED BY

CONTRACTOR. CONTRACTOR IS RESPONSIBLE FOR CUTTING

STOP-LOGS AS SHOWN. THE 0.75'' DIMENSION IS CRITICAL AND

NEEDS TO BE CENTERED IN THE STOP-LOG TO AVOID LEAKAGE.

THE FINISHED SURFACE SHALL BE SMOOTH TO PROVIDE A FLAT

SURFACE FOR THE STOP-LOG ABOVE IT. THE CONTRACTOR SHALL

DELIVER 11 STOP-LOGS TO THE SITE. THE COST OF THE STOP-LOG

WORK IS INCIDENTAL TO THE OUTLET CONTROL STRUCTURE.

12''

2.25''

NOTE:

TWO (2) LIFTING HOOKS REQUIRED

6''3''1''3''

NOTES:

1. CONTRACTOR TO DRILL 38" HOLES IN TOP OF STOP LOG CHANNELS AND

PROVIDE TWO (2) PADDLE LOCKS TO LOCK THROUGH CHANNELS TO

PREVENT LOGS FROM BEING LIFTED OUT WHEN LOCK IS IN PLACE.

2. CONTRACTOR SHALL SUBMIT SHOP DRAWINGS FROM FABRICATOR FOR

ENGINEER REVIEW.

STOP LOG CROSS SECTION

E2…

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