Addendum 1 & Pre-bid.pdf

PDF 18 MB Posted Jun 14, 2026

Attached to: 26-05 Wri922420D (Wright)
Solicitation number: 26-05 Wri922420D (Wright)
Issued by: Carroll County, Iowa

About this file

Written by GovTribe AI · Jul 13, 2026

This is Addendum 1 to the bidding documents for Project 26-05 Wri922420D, a nutrient reduction wetland construction project issued by the Iowa Department of Agriculture and Land Stewardship, Division of Soil Conservation and Water Quality, in cooperation with Ducks Unlimited, Inc. The project encompasses construction of a traditional breakpoint nutrient reduction wetland in Wright County, Iowa, involving selective clearing, excavation, grading, steel sheet pile installation (932 square feet), tile installation (approximately 2,500 linear feet), water control structures, and seeding (26.3 acres) across approximately 12,950 cubic yards of earthwork. The addendum, dated July 9, 2026, modifies the original bidding documents by updating Document CC (Proposal and Schedule of Prices), revising Plans C002 and C101 with modifications to Bid Items 5, 21, 22, 23, 28, and adding new Bid Item 29, and updating Technical Specifications CS-006, CS-008, CS-051, and CS-061. Sealed bids are due July 16, 2026, at 3:00 p.m. via the Iowa Management of Procurement and Contracts System (IMPACS). A non-mandatory pre-bid conference was held July 1, 2026, at the USDA Service Center in Clarion, Iowa. Construction must commence following the preconstruction conference and be substantially complete by June 15, 2027, with buffer seeding completed by June 30, 2027, and structure seeding by September 15, 2027. Liquidated damages are assessed at $175 per day for all work except seeding and $125 per day for seeding.

Bidders must submit a proposal guarantee equal to ten percent of the base bid amount and, if awarded, furnish a Performance Bond equal to one hundred percent of the contract price within fourteen days of receiving the Notice of Award. The estimated construction cost range is $450,000 to $550,000. All bidders must acknowledge receipt of Addendum 1 on the updated Document CC proposal form, and failure to do so will result in bid disqualification. The affidavit required by the bidding documents must be notarized and included with the proposal. Bidders must register with the Iowa Department of Inspections, Appeals & Licensing and comply with all applicable federal, state, and local laws and ordinances. Electronic grading files are available by contacting Andrew Schippers of Ducks Unlimited at 832-704-3286 or aschippers@ducks.org. The project includes 29 line items covering site preparation, seeding, mobilization, drainage tile investigation, structural elements, and various earth and fill materials, with the NRCS Construction Specifications applicable to the work.

View the file

Other files

File	Type	Posted
Plans.pdf	PDF	Jun 14, 2026
Appendix I.pdf	PDF	Jun 14, 2026
Doc #EE Bid Bond.pdf	PDF	Jun 14, 2026
Doc CC Proposal - Acknowledgment - Affidavit.pdf	PDF	Jun 14, 2026
Doc CC - Schedule of Prices.pdf	PDF	Jun 14, 2026
Doc EE Bind Bond.pdf	PDF	Jun 14, 2026
General Requirements.pdf	PDF	Jun 14, 2026
Construction Monitoring Plan.pdf	PDF	Jun 14, 2026
Engineer's Design Report.pdf	PDF	Jun 14, 2026
26-05 Wri922420D Notice to Bidders.pdf	PDF	Jun 14, 2026
Specifications.pdf	PDF	Jun 14, 2026
Plan.pdf	PDF	Jun 14, 2026
Doc CC Proposal - Acknowledgement - Affidavit.pdf	PDF	Jun 14, 2026

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Division of Soil Conservation and Water Quality

Cover Page: Pre-Bid Minutes, Questions, Addenda

To: All plan holders From: Tracy Blocker, Division

Pages: Phone: 515-344-6279

Re: Wri922420D Nutrient Reduction Wetland (Bid 26-05) Date: July 12, 2026

Comments: Page

• Cover Page 1

• Addendum No. 1 with Attachments 1, 2 & 3 2 - 89

• Pre-Bid Meeting Minutes 90 - 97

• Pre-Bid meeting attendance list 98

• Updated plan holders list 99 - 101

• Electronic files for grading can be obtained by e-mail by contacting Andrew Schippers with Ducks Unlimited at 832-704-3286 or aschippers@ducks.org.

- END OF COVER PAGE -

July 9, 2026

Division of Soil Conservation and Water Quality 1305 E Walnut Street Des Moines, IA 50319

TO: Prospective Bidders

Subject: Addendum No. 1 to Bid Documents WRI922420D Nutrient Reductionl Wetland Project – Bid No. 26-05 Wright County, Iowa

This addendum forms a part of the bidding contract documents and modifies the original bidding documents posted on June 14, 2026. An updated bidding form, Document CC.– Proposal and Schedule of Prices is attached with the addendum acknowledged. This updated bidding form must be used for 26-05 and all bidders must acknowledge this addendum on Page CC-2. FAILURE TO DO SO WILL SUBJECT BIDDER TO DISQUALIFICATON.

Description:

DOCUMENT CC– PROPOSAL AND SCHEDULE OF PRICES, 26-05 (See Attachment No.1)

Please use the updated Document CC, to acknowledge Addendum No. 1 (See Attachment No. 1):

Plans (See Attachment No. 2) Revisions have been made to Bid items 5, 21, 22, 23, 28 and a new Bid item 29 has been added.

These changes are included in Plans C002 and C101. See new Plan set dated ‘2026-07-09”.

Specifications (See Attachment No. 3)

With the revised plan set, the Technical Specifications have also been updated. These changes are included in Specifications CS-006, CS-008, CS-051 and CS-061.

See the revised Technical Specifications booklet, dated 07-09-2026.

Sincerely, Sara Smith, P.E.

Water Resources Bureau

Attachment No. 1 – Updated Document CC Attachment No. 2 – Revised set of Plans dated 07-09-2026 Attachment No. 3 – Revised Specifications booklet dated 07-09-2026

End of Addendum No. 1

WRI922420D Nutrient Reduction Wetland Project Bid No. 26-05

DOCUMENT CC

PROPOSAL AND SCHEDULE OF PRICES

CC-1

Time and Date for Bid Submissions: 3:00:00 PM, 07/16/2026

BIDDER LOGIN –

https://solutions.sciquest.com/apps/Router/SupplierLogin?CustOrg=DASIowa

Time and Date of Bid Opening: 3:00 PM, July 16, 2026

Bid Opening TEAMS: 469-998-7627, code 596080221#

Project Description and Location: Wri922420D Nutrient Reduction Wetland Project

Section 20, Township 92 North, Range 24 West Wright County, Iowa

Proposal of (PRINT Name of Bidder: COMPANY & CONTACT)

Located at (FULL Address) (Telephone Number)

Amount of

Proposal Guarantee

Description of Work Specified Completion Date Liquidated Damages

10% of Base Bid

All Work Except Seeding

June 15, 2027

$175.00 Per Day

Seeding - Buffer Seeding – Structure

06/30/2027 09/15/2027 $125.00 Per Day

The undersigned hereby agrees, if awarded the contract, to execute the proposed contract and to furnish satisfactory Performance Bond in an amount not less than one hundred percent (100%) of the contract award within fourteen (14) days from the date when Notice-of-Award is received, and to provide all supervision, labor, materials, and equipment required to complete the project designated above, for the prices hereinafter set forth, in strict compliance with the Contract Documents prepared by the Division.

Further, the parties agree and acknowledge as follows:

The amount of loss or damages likely to be incurred by Division are uncertain and said loss is incapable or very difficult to quantify and estimate;

The amount specified for liquidated damages herein bear a reasonable relationship to, and are not plainly or grossly disproportionate to, the probable loss likely to be incurred by Division in connection with any delay on part of the Contractor;

The amount of liquidated damages fixed herein bears a reasonable relationship to Division’s anticipated losses and/or actual losses;

The amount of liquidated damages herein fairly approximates Division’s loss at the time of making of this Agreement;

The amount of liquidated damages fixed herein are fair and reasonable and it approximates to the extent possible the actual loss to Division as a result of any delay on the part of Contractor; and

Division and Contractor are sophisticated parties and negotiated this Agreement at arm’s length.

Now therefore, in consideration of the mutual obligations set forth herein, the receipt and sufficiency of which is hereby acknowledged, the parties agree as follows:

DOCUMENT CC

CC-2

Contractor will commence the work after the Preconstruction Conference and by the Construction Start Date approved by Division in the Construction Progress Schedule.

Contractor will complete the work within the specified time period identified in the contract, or as amended, or be responsible for liquidated damages per day as set forth in the above table.

The liquidated damages may be withheld from payments made to the Contractor by the Division upon written notice that liquidated damages have begun to accrue, and such damages are in addition to other remedies available as provided for in this contract and applicable law.

A Proposal Guarantee in the amount stipulated herein is included with this proposal, to be forfeited to the Division, if the undersigned fails or refuses to execute the contract and furnish satisfactory Performance Bond, if awarded the contract.

By (Signed)

( PRINT NAME)

(Title) (Date)

In executing this proposal, Bidder acknowledges receipt of Addendum Number dated

1 July 9, 2026

DOCUMENT CC

CC-3

THE FOLLOWING AFFIDAVIT MUST BE COMPLETED AND NOTARIZED, OR THIS BID WILL BE REJECTED

AFFIDAVIT

The signatory, being duly sworn, does depose and say that the undersigned is an authorized representative of:

(Name of Firm)

Located at hereinafter referred to as “Bidder” and does hereby affirm to have personal knowledge that said Bidder has thoroughly examined the Contract Documents, carefully prepared the Proposal and Schedule of Prices form, and has checked the same in detail before submitting; and that said Bidder, or the agents, officers, or employees thereof, have not, either directly or indirectly, entered into any agreement, participated in any collusion or fraud, or otherwise taken any action in restraint of free competitive bidding in connection with this bid.

(Signed)

(PRINT name)

Subscribed and sworn to before me this day of , 20

(Signed, Notary)

My Commission Expires , 20

Must include notary stamp

CC-4

WRI922420D Nutrient Reduction Wetland Project DOCUMENT CC Bid No. 26-05 PROPOSAL AND SCHEDULE OF PRICES

SCHEDULE OF PRICES

Wri922420D Project Contract No. 26-05 Section 20, Township 92 North, Range 24 West, Wright County, Iowa

Name of Bidder:

Item No.

Work or Material

Spec No.

Est Quantity

Unit

Unit Price

Total

1.1 1 Stripping IA CS-001 1 LS

2 Crop Damage IA CS-001 0.0 AC

1.2 3 Structure Seeding IA CS-006 1.1 AC

1.3 4 Buffer Seeding IA CS-006 25.2 AC

1.4 5 Mobilization & Demobilization CS-008 1 LS

1.5 6 Drainage Tile Investigation IA CS-009 1 LS

1.6 7 Steel Sheet Piling IA CS-013 932 SF

1.7 8 Excavation (General) IA CS-021 1,741 CY-P

1.8 9 Earthfill (General) IA CS-023 554 CY-P

1.9 10 Earthfill (General Dam) IA CS-023 2,828 CY-P

1.10 11 Earthfill (Dam Core) IA CS-023 1,476 CY-P

1.11 12 Drainfill (sand) IA CS-024 80.0 TN

1.12 13 Topsoil Placement IA CS-026 6,349 CY-P

1.13 14 Toe Drain (6" Perforated CPP) IA CS-046 430 LF

1.14 15 8"Ø HDPE Dual-Wall IA CS-046 125 LF

1.15 16 15"Ø HDPE Dual-Wall IA CS-046 1,138 LF

1.16 17 18"Ø HDPE Dual-Wall IA CS-046 667 LF

1.17 18 Alum. CMP Draw-Down Structure IA CS-051 1 LS

1.18 19 Alum. CMP Draw-Down Inlet/Outlet IA CS-051 57 LF

1.19 20 Stoplog Storage Structure IA CS-046 1 LS

1.20 21 CMP Outlet - 10"Ø IA CS-051 20 LF

1.21 22 CMP Outlet - 18"Ø IA CS-051 40 LF

1.22 23 CMP Outlet - 20"Ø IA CS-051 20 LF

1.23 24 Riprap (IA DOT Class E) IA CS-061 552.0 TN

1.24 25 Cement Grout IA CS-062 106 CY

1.25 26 36"Ø Alum. CMP Riser Inlet (at wetland) IA CS-051 1 LS

1.26 27 18"Ø Alum. CMP Riser Inlet (at stilling basin) IA CS-051 1 LS

1.27 28 Septic System Modification CS-008 1 LS

1.28 29 CMP Outlet - 8"Ø IA CS-051 40 LF

TOTAL BASE BID .................................................................................................................................. $

Worksheet purposes only. Bids will only be accepted through the on-line Iowa Management of Procurement & Contracts System (IMPACS).

To register and learn about IMPACS, go to:

https://solutions.sciquest.com/apps/Router/SupplierLogin?CustOrg=DASIowa

END OF DOCUMENT CC

WRI922420D Nutrient Reduction Wetland Project Bid No. 26-05

Attachment No. 2

Revised set od Plans dated 07-09-2026

PROJECT LOCATION

PROJECT NO. Wri922420D

WRIGHT COUNTY

S20, T92N, R24W

IOWA

IN COOPERATION WITH

IOWA DEPARTMENT OF AGRICULTURE AND LAND STEWARDSHIP

IOWA ENGINEERING JOB CLASS IV

PROJECT LOCATION

Know what's below.

Call before you dig.

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PROJECT LOCATION MAP

SCALE: 1" = 2000'

IOWA

SHEET INDEX

001 COVER SHEET

002 SPECIFICATIONS, QUANTITIES, & NOTES

051 TOPOGRAPHY & EXISTING CONDITIONS

101 SITE PLAN

201 EMBANKMENT PLAN & PROFILE

202 RIPRAP & DRAW-DOWN PLAN

203 INLET CHANNEL PLAN & PROFILE

204 WETLAND PROFILES

205 TILE #1 PLAN & PROFILE

206 TILE #2 PLAN & PROFILE

207 TILE #3 PLAN & PROFILE

208 TILE #4 PLAN & PROFILE

301 SHEET PILE DETAILS

302 CONSTRUCTION DETAILS

303 WATER CONTROL STRUCTURE SHEET 1

304 WATER CONTROL STRUCTURE SHEET 2

305 FILTER DIAPHRAGM DETAILS

401 SEEDING PLAN

CLARION, IA

ELM LAKE

LAKE CORNELIA

200 TH ST

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V E

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.

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

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

Andrew Schippers, P.E. Date

My license number is P26317 My license renewal date is December 31, 2025 Pages of sheets covered by this seal: 1 - 18 (C001-C401)

AFFIX SEAL: DUCKS UNLIMITED, INC.

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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

3 3 IA CS-006 STRUCTURE SEEDING AC 1.1

4 4 IA CS-006 BUFFER SEEDING AC 25.2

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 932

8 8 IA CS-021 EXCAVATION (GENERAL) CY-P 1,741

9 9 IA CS-023 EARTHFILL (GENERAL) CY-P 554

10 10 IA CS-023 EARTHFILL (GENERAL DAM) CY-P 2,828

11 11 IA CS-023 EARTHFILL (DAM CORE) CY-P 1,476

12 12 IA CS-024 DRAINFILL (SAND) TN 80

13 13 IA CS-026 TOPSOIL PLACEMENT CY-P 6,349

14 14 IA CS-046 TOE DRAIN (6"Ø PERFORATED CPP) LF 430

15 15 IA CS-046 8"Ø HDPE DUAL-WALL LF 125

16 16 IA CS-046 15"Ø HDPE DUAL-WALL LF 1,139

17 17 IA CS-046 18"Ø HDPE DUAL-WALL LF 667

18 18 IA CS-051 ALUM. CMP DRAW-DOWN STRUCTURE LS 1

19 19 IA CS-051 ALUM. CMP DRAW-DOWN INLET/OUTLET LF 57

20 20 IA CS-046,

IA CS-081 STOPLOG STORAGE STRUCTURE LS 1

21 21 IA CS-051 CMP OUTLET - 10"Ø LF 20

22 22 IA CS-051 CMP OUTLET - 18"Ø LF 40

23 23 IA CS-051 CMP OUTLET - 20"Ø LF 20

24 24 IA CS-061 RIPRAP (IA DOT CLASS E) TN 552

25 25 IA CS-062 CEMENT GROUT CY 106

26 26 IA CS-051 36" ALUM. CMP RISER INLET (AT WETLAND) LS 1

27 27 IA CS-051 18" ALUM. CMP RISER INLET (AT STILLING BASIN) LS 1

28 28 IA CS-008 SEPTIC SYSTEM MODIFICATION LS 1

29 29 IA CS-051 CMP OUTLET - 8"Ø LF 40

CONSTRUCTION NOTES:

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

BERM, WETLAND GRADING AREA, INLET CHANNEL, SEDIMENTATION BASINS, AND ANY OTHER GRADING AREAS (ESTIMATED STRIPPING QUANTITY IS 9,467 C.Y.). THIS MATERIAL SHALL BE STOCKPILED ON-SITE

FOR RESPREAD, WHICH IS INCLUDED IN A SEPARATE BID ITEM.

2. 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 HYDROSEEDING, HYDROMULCHING, AND FERTILIZING ALL STRUCTURES, EMBANKMENTS, AND ALL OTHER DISTURBED AREAS (OUTSIDE OF POOL AREA), AS INDICATED ON THE DRAWINGS OR OTHERWISE DESIGNATED. HYDROSEEDING & HYDROMULCH WILL BE USED TO PREVENT STRAW CLOGGING IN THE AGRIDRAIN BAR GUARDS (OR APPROVED EQUALS).

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.

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. CONSTRUCTION SITE ACCESS WILL BE ON 200TH ST. ALL WORK, PERMIT FEES, RESTORATION, AND ADDITIONAL COSTS

REQUIRED TO PROVIDE THIS ACCESS ARE THE CONTRACTORS RESPONSIBILITY.

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.

8. BID ITEM FOR EXCAVATION (GENERAL) SHALL CONSIST OF EXCAVATION AND GRADING OF MATERIAL

NEEDED FOR THE BERM CORE TRENCH, ESTABLISHING POOL FINAL GRADE (GRADING AREA),

SEDIMENTATION BASINS (THREE TOTAL), AND INLET/OUTLET CHANNELS.

9. BID ITEM FOR EARTHFILL (GENERAL) SHALL CONSIST OF THE EARTHFILL NECESSARY TO CONSTRUCT THE SUBMERGED BERMS 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.

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 1,958 C.Y. OF GENERAL FILL MATERIAL WILL NEED TO BE EXCAVATED FROM THE

BORROW AREA FOR GENERAL (DAM) CONSTRUCTION. 870 C.Y. IS ANTICIPATED TO COME FROM

EXCAVATION OF THE WETLAND POOL/CORE TRENCH.

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 1,476 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.

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.

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 8"Ø HDPE DUAL-WALL SHALL CONSIST OF FURNISHING AND INSTALLING 8-INCH, NON-PERFORATED, HDPE, DUAL-WALL CORRUGATED POLYETHYLENE TUBING USED AS A DRAIN TILE AS SHOWN ON THE DRAWINGS. MEASUREMENT AND PAYMENT FOR 8-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 10"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 15"Ø HDPE DUAL-WALL SHALL CONSIST OF FURNISHING AND INSTALLING 15-INCH, NON-PERFORATED, HDPE, DUAL-WALL CORRUGATED POLYETHYLENE TUBING USED AS A DRAIN TILE AS SHOWN ON THE DRAWINGS. MEASUREMENT AND PAYMENT FOR 15-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 18"Ø GALVANIZED CMP SHALL BE UTILIZED AT THE EXPOSED OUTLET OF THE TILE (TWO LOCATIONS). THE METAL OUTLET SHALL BE PAID UNDER A

SEPARATE BID ITEM.

17. BID ITEM FOR 18"Ø HDPE DUAL-WALL SHALL CONSIST OF FURNISHING AND INSTALLING 18-INCH, NON-PERFORATED, HDPE, DUAL-WALL CORRUGATED POLYETHYLENE TUBING USED AS A DRAIN TILE AS SHOWN ON THE DRAWINGS. MEASUREMENT AND PAYMENT FOR 18-INCH NON-PERFORATED DUAL-WALL POLYETHYLENE TUBING SHALL BE ON AN INSTALLED LINEAR FOOT BASIS, AND SHALL INCLUDE ALL NECESSARY FITTINGS AND ADAPTERS. SEE SPECIFIC CONNECTION DETAILS ON FOR 18"Ø PIPES. A 20' LENGTH OF 20"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.

18. BID ITEM FOR ALUMINUM CMP DRAW-DOWN 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.

19. BID ITEM FOR ALUMINUM CMP DRAW-DOWN INLET/OUTLET SHALL CONSIST OF PROVIDING AND INSTALLING THE 15-INCH DIAMETER CMP INLET AND OUTLET PIPES AS SHOWN ON THE DRAWINGS.

20. 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.

21. BID ITEM FOR CMP OUTLET 10"Ø SHALL CONSIST OF FURNISHING AND INSTALLING THE 10"Ø CMP AND FITTINGS SHOWN ON THE PLANS FOR TILE OUTLETS, INCLUDING ANIMAL GUARD AT OUTLET END OF PIPE.

22. BID ITEM FOR CMP OUTLET - 18"Ø SHALL CONSIST OF FURNISHING AND INSTALLING THE 18"Ø CMP AND FITTINGS SHOWN ON THE PLANS FOR TILE OUTLETS, INCLUDING ANIMAL GUARD AT OUTLET END OF PIPE.

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

24. 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. IN ADDITION, 5 TN OF RIPRAP WILL BE PLACED OVER GEOTEXTILE FABRIC AT EACH TILE OUTLET. 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.

25. BID ITEM FOR CEMENT 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.

26. BID ITEM FOR ALUMINUM CMP RISER SHALL CONSIST OF PROVIDING AND INSTALLING THE 36-INCH

DIAMETER CMP RISER IN WETLAND AS SHOWN ON THE DRAWINGS.

27. BID ITEM FOR ALUMINUM CMP RISER SHALL CONSIST OF PROVIDING AND INSTALLING THE 18-INCH DIAMETER CMP RISER IN STILLING BASIN AS SHOWN ON THE DRAWINGS. BID ITEM SHALL INCLUDE ALL NECESSARY PIPE EXTENSIONS AND FITTINGS REQUIRED TO TIE RISER STRUCTURE WITH EXISTING TILE.

28. BID ITEM FOR SEPTIC SYSTEM MODIFICATION INCLUDES ALL MATERIAL, EQUIPMENT, AND LABOR NECESSARY TO REMOVE EXISTING 5" CPP SEPTIC LINE AND DISCONNECTING THE SEPTIC SYSTEM FROM THE COUNTY TILE. REMOVAL IS LIMITED TO THE PIPE THAT IS LOCATED WITHIN THE EASEMENT.

29. BID ITEM FOR CMP OUTLET 8"Ø SHALL CONSIST OF FURNISHING AND INSTALLING THE 8"Ø CMP AND FITTINGS SHOWN ON THE PLANS FOR TILE OUTLETS, INCLUDING ANIMAL GUARD AT OUTLET END OF PIPE.

30. 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.

AFFIX SEAL: DUCKS UNLIMITED, INC.

ON:

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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

6-19-24

T.P.

A.S., J.W.

C.K.

A.S.

Wright - Peterson C001 Cover & Specs

C T

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Q U

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IA-340-8

-2

A .S

R C S /I

D A

12" Ø TILE

INV. 1198.69

EXISTING 12" Ø

CONCRETE TILE

12" Ø TILE

INV. 1195.78

12" Ø TILE

INV. 1195.29

12" Ø TILE

INV. 1194.91

12" Ø TILE

INV. 1194.37

12" Ø TILE

INV. 1193.32

12" Ø TILE

INV. 1192.14

12" Ø TILE

INV. 1191.77

12" Ø TILE

INV. 1197.79

12" Ø TILE

INV. 1191.63

12" Ø TILE

INV. 1190.24

12" Ø TILE

INV. 1191.14

EXISTING 12" Ø

CLAY TILE

12" Ø TILE

INV. 1190.32

14" Ø TILE

INV. 1187.47

14" Ø TILE

INV. 1184.87

12" Ø TILE

INV. 1186.52

12" Ø TILE

INV. 1191.83

12" Ø TILE

INV. 1193.83

12" Ø TILE

INV. 1194.49

12" Ø TILE

INV. 1194.66

8" Ø TILE

INV. 1196.48

7" Ø TILE

INV. 1198.86

EXISTING 12" Ø

CONCRETE TILE

EXISTING 12" Ø

CLAY TILE

CP 1

SET CAPPED REBAR (RTK)

N: 3740484.66 E: 4868702.20

ELEV: 1224.30 (NAVD88)

CP 2

SET CAPPED REBAR (RTK)

N: 3740368.79 E: 4866123.36

ELEV: 1205.41 (NAVD88)

CP 3

SET CAPPED REBAR (RTK)

N: 3741652.25 E: 4867398.76

ELEV: 1202.22 (NAVD88)

EXISTING OVERHEAD ELECTRIC

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GRAPHIC SCALE

1 inch = feet200

200 0 100 200 400 800

OCTOBER 20, 2022

US-IA-340-8, WRIGHT COUNTY - PETERSON

Topographic Survey Field Book: CREP

HORIZONTAL CONTROL

Coordinates are NAD 83 (2011), Iowa State Plane North Zone 1401, and units of measurement are in U.S. Survey Feet. Raw data was collected for 5 hours on October 20, 2022 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 1224.299 on the NAVD 88.

FIELD WORK TIMELINE:

October 20, 2022 - Initial Topographic Survey; Control Points Set, Obtained OPUS Solution.

March 29-30, 2023 - Tile Investigation and Test Pits.

April 24, 2023 - Soil Borings by CTS.

CONTROL POINT DATA

POINT #

ELEVATION

1224.299

1205.411

1202.219

NORTHING

3740484.655

3740368.792

3741652.248

EASTING

4868702.195

4866123.355

4867398.756

DESCRIPTION

SET CAPPED REBAR

*TEST PIT DIMENSIONS MEASURED APPROXIMATELY 20' LONG, 3' WIDE, & 3.5' DEEP.

TEST PIT #1

TEST PIT #3

TEST PIT #5

TEST PIT #6

TEST PIT #4

200TH ST

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N A

V E

TEST PIT #2

PETERSON,

RICK E.

SOIL BORING #1

SOIL BORING #2

SOIL BORING #3

24" X 48" RCBC

NORTH INVERT ELEV. 1198.44'

SOUTH INVERT ELEV. 1198.44'

PETERSON,

RICK E.

SEGO

REVOCABLE

TRUST

CROWE FARMS LLC

TOP OF BASEMENT

SLAB ELEV. 1196.4'

91" X 52" CMP CULVERT

WEST INVERT ELEV. 1189.74'

EAST INVERT ELEV. 1190.15'

EG. AROUND HOME

ELEV. 1202.0'

5"Ø EXISTING

SEPTIC LINE

R ev is io ns B y

D at e

REVIEWER:

DRAWN BY:

SURVEYED BY:

PROJECT NUMBER:

DATE:

CAD FILE:

R ev is io n S he et

AFFIX SEAL: DUCKS UNLIMITED, INC.

ON:

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6-19-24

T.P.

A.S., J.W.

C.K.

A.S.

Wright-Peterson-Topo

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AutoCAD SHX Text

TEST PIT SOIL DATA

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LOCATION

AutoCAD SHX Text

TEST PIT #1

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TEST PIT #2

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TEST PIT #3

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TEST PIT #4

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TEST PIT #5

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TEST PIT #6

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TOP

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36" TOPSOIL

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26" TOPSOIL

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24" TOPSOIL

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31" TOPSOIL

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34" TOPSOIL

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25" TOPSOIL

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ELEV. RANGE

AutoCAD SHX Text 1203.1-1206.0

AutoCAD SHX Text 1199.5-1201.7

AutoCAD SHX Text 1193.8-1195.7

AutoCAD SHX Text 1201.7-1204.3

AutoCAD SHX Text 1192.8-1195.6

AutoCAD SHX Text 1201.4-1203.5

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MIDDLE

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MINIMAL TRANSITION

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MINIMAL TRANSITION

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LIGHT BROWN/GRAY CLAY MIXED W/SAND

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LIGHT BROWN CLAY MIX W/ SAND

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MINIMAL TRANSITION

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LIGHT BROWN CLAY MIX (W/SAND)

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ELEV. RANGE

AutoCAD SHX Text N/A

AutoCAD SHX Text 1190.3-1193.8

AutoCAD SHX Text 1200.6-1201.7

AutoCAD SHX Text N/A

AutoCAD SHX Text 1199.7-1201.4

AutoCAD SHX Text

BOTTOM

AutoCAD SHX Text

LIGHT BROWN CLAY (SOME SAND CONTENT)

AutoCAD SHX Text

LIGHT BROWN SOIL WITH LIGHT GRAY PARTICLES (CLAY & SOME SAND)

AutoCAD SHX Text

ORANGE SAND OVER GRAY/BLUE CLAY

AutoCAD SHX Text

DARK ORANGE AND BROWN CLAY

AutoCAD SHX Text

LIGHT BROWN CLAY (SOME SAND)

AutoCAD SHX Text

DARK ORANGE AND BROWN CLAY

AutoCAD SHX Text

ELEV. RANGE

AutoCAD SHX Text 1197.3-1203.1

AutoCAD SHX Text 1192.5-1199.5

AutoCAD SHX Text 1187.3-1190.3

AutoCAD SHX Text 1195.1-1200.6

AutoCAD SHX Text 1187.1-1192.8

AutoCAD SHX Text 1195.2-1199.7

AutoCAD SHX Text

SOIL BORING SOIL DATA

AutoCAD SHX Text

LOCATION

AutoCAD SHX Text B1

AutoCAD SHX Text B2

AutoCAD SHX Text B3

AutoCAD SHX Text

TOP

AutoCAD SHX Text

12" TOPSOIL

AutoCAD SHX Text

12" TOPSOIL

AutoCAD SHX Text

12" TOPSOIL

AutoCAD SHX Text

ELEV. RANGE

AutoCAD SHX Text 1196.3-1197.3

AutoCAD SHX Text 1191.8-1192.8

AutoCAD SHX Text 1191.9-1192.9

AutoCAD SHX Text

MIDDLE

AutoCAD SHX Text

LEAN CLAY WITH SAND,

AutoCAD SHX Text

FAT CLAY

AutoCAD SHX Text

FAT CLAY

AutoCAD SHX Text

ELEV. RANGE

AutoCAD SHX Text 1191.3-1196.3

AutoCAD SHX Text 1188.3-1191.8

AutoCAD SHX Text 1189.4-1191.9

AutoCAD SHX Text

BOTTOM

AutoCAD SHX Text

LEAN CLAY WITH SAND AND GRAVEL

AutoCAD SHX Text

LEAN CLAY WITH SAND

AutoCAD SHX Text

SANDY LEAN CLAY TO LEAN CLAY WITH SAND

AutoCAD SHX Text

ELEV. RANGE

AutoCAD SHX Text 1182.3-1191.3

AutoCAD SHX Text 1167.8-1188.3

AutoCAD SHX Text 1167.9-1189.4

CASADY FAMILY REVOCABLE TRUST

13+09

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GRAPHIC SCALE

1 inch = feet120

120 0 60 120 240 480

LEGEND

APPROXIMATE PROPERTY LINE

PROPOSED DIKE

PROPOSED CHANNEL/DITCH

PROPOSED MAJOR CONTOUR

PROPOSED MINOR CONTOUR

PROPOSED PIPE

(000)

PROPOSED WATER CONTROL

STRUCTURE

PROPOSED UNDERGROUND ELECTRICE

PROPOSED OVERHEAD ELECTRICOHE

PROPOSED HEADWALL / ENDWALL

PROPOSED MANHOLE

PROPOSED SOIL BORING

PROPOSED FULL SERVICE LEVEL (FSL)

PROPOSED SPOIL AREA

PROPOSED BORROW AREA

PROPOSED RIPRAP

PROPOSED DITCH

PROPOSED DIKE

0.00 PROPOSED SPOT ELEVATION

100 YEAR STORM BOUNCE

ELEV. 1197.6'

PROPOSED EDGE OF NWL ELEVATION

4.99 ACRES @ 1194.1' FSL

EXISTING SEPTIC LINE TO BE REMOVED

(CURRENTLY TIED INTO TILE SYSTEM). REMOVAL

LIMITED TO PIPE LOCATED WITHIN THE EASEMENT.

PROPOSED WETLAND GRADING AREA;

GRADE DOWN TO ELEV. 1193.0'

SHEET PILE STRUCTURE W/ PRIMARY

WEIR 60' WIDE; CREST ELEVATION AT

1194.1' (FSL); PROPOSED STILLING

BASIN DOWNSTREAM OF WEIR

APPROX. PROPERTY LINE

PROPOSED BERM

TOP ELEV. 1198.7'

PROPOSED SEDIMENTATION BASIN; BOTTOM OF

BASIN ELEVATION 1192.0 W/ 3:1 SIDE SLOPES;

BASIN BOTTOM DIMENSIONS 15' WIDE X 30' LONG

TOP OF BASEMENT

SLAB ELEV. 1196.4'

DESIGN CRITERIA

DESIGN CRITERIA VALUE UNIT REQUIREMENT/NOTES

WATERSHED AREA 626 ACRES 500 MIN.

POOL NORMAL WATER LEVEL (NWL) ELEVATION 1194.1 FT.

DESIGNED WETLAND POOL AREA (@ NWL) 4.99 ACRES

PERCENT POOL AREA TO WATERSHED AREA 0.8 % >=0.50%

MAX. POOL DEPTH 1.2 FT.

AVG. POOL DEPTH 1.2 FT.

DEEP WATER AREA (DEPTH >3 FT) 0 ACRES

PERCENT DEEP WATER TO POOL AREA 0 % <25%

POOL STORAGE VOLUME AT NWL 7.192 ACRE-FT

BERM ELEVATION 1198.7 FT.

POOL STORAGE VOLUME AT TOP OF BERM 55.303 ACRE-FT

MAX BERM HEIGHT 7.3 FT.

AVG. BERM HEIGHT 3.3 FT.

BERM LENGTH 1120 FT.

PRIMARY WEIR ELEVATION 1194.1 FT.

PRIMARY WEIR LENGTH 60 FT.

10-YEAR STORM HWL IN POOL 1196.57 FT.

10-YEAR PEAK INFLOW 899.34 CFS

10-YEAR PEAK OUTFLOW 809.43 CFS

25-YEAR STORM HWL IN POOL 1197.02 FT.

25-YEAR PEAK INFLOW 1164.43 CFS

25-YEAR PEAK OUTFLOW 1052.24 CFS

100-YEAR STORM HWL IN POOL 1197.58 FT.

100-YEAR PEAK INFLOW 1641.74 CFS

100-YEAR PEAK OUTFLOW 1505.66 CFS

WETLAND POOL CHARACTERISTICS

WETLAND

POOL

DEPTH (FT.)

ELEV.

(FT.)

INCREMENTAL

AREA (ACRE)

CUMULATIVE

VOLUME

(ACRE-FT)

0.0 1192 0 -

1.0 1193 4.360 2.181

2.0 1194 4.690 6.708

2.1 1194.1 4.997 7.192

3.0 1195 5.272 11.813

4.0 1196 7.894 18.396

5.0 1197 12.049 28.368

6.0 1198 16.333 42.559

6.7 1198.7 20.079 55.303

PROPOSED BORROW AREA FOR CLAY CORE;

STRIP FIRST 2-3' TOPSOIL BEFORE EXCAVATING BORROW;

ESTIMATED DEPTH OF 6-7' AFTER REMOVAL OF CLAY MATERIAL

TO BE BACKFILLED WITH WASTE MATERIAL AND COMPACTED,

CUT CHANNEL FROM

SEDIMENTATION BASIN

TO WETLAND

PROPOSED SEDIMENTATION BASIN; BOTTOM OF

BASIN ELEVATION 1191' W/ 3:1 SIDE SLOPES;

BASIN BOTTOM DIMENSIONS 15' WIDE X 30' LONG

PROPOSED SEDIMENTATION BASIN; BOTTOM OF

BASIN ELEVATION 1191' W/ 3:1 SIDE SLOPES;

BASIN BOTTOM DIMENSIONS 15' WIDE X 30' LONG

EASEMENT BOUNDARY

SUBMERGED BERM; 6'

WIDE TOP W/ 3:1 SIDE

SLOPES; TOP OF BERM

ELEVATION 1193.6'

WETLAND PROFILE #1

(ALONG FLOW PATH)

WETLAND PROFILE #2

(ACROSS GRADING AREA)

PROPOSED CMP RISER WCS

PROPOSED CMP INTAKE RISER

THIS AREA SHALL BE SLOPED TO

DRAIN TOWARDS THE WETLAND

50' TILE BREAK ON

5" Ø EXISTING CLAY TILE

(CLAY; CRUSH EXISTING TILE)

TILE #1 - INTERCEPT EXISTING 5" Ø

CLAY TILE AND RE-ROUTE W/

8" Ø HDPE DUAL WALL PIPE

AT 0.1% SLOPE FOR 125 L.F.

TIE IN INVERT ELEV. 1195.31'

OUTLET INVERT ELEV. 1195.1'

EASTING: 4866929.9266

NORTHING: 3742140.6907

BREAK EXISTING 5"Ø CLAY TILE

FROM INTERCEPT LOCATION FOR 100' IN

DOWNSTREAM DIRECTION

(CLAY; CRUSH EXISTING TILE IN PLACE)

TILE #2 - INTERCEPT EXISTING 12" Ø

CLAY TILE AND RE-ROUTE W/

18" Ø HDPE DUAL-WALL PIPE

AT 0.10% SLOPE FOR 667 L.F.

TIE IN INVERT ELEV. 1195.76'

OUTLET INVERT ELEV. 1195.1'

EASTING: 4867507.9640

NORTHING: 3742372.6300

BREAK EXISTING 12"Ø CLAY TILE

FROM INTERCEPT LOCATION FOR 100' IN

DOWNSTREAM DIRECTION

(CLAY; CRUSH EXISTING TILE IN PLACE)

TILE #3 - INTERCEPT EXISTING 12" Ø

CLAY TILE AND RE-ROUTE W/

15" Ø HDPE DUAL-WALL PIPE

AT 0.30% SLOPE FOR 522 L.F.

TIE IN INVERT ELEV. 1196.69'

OUTLET INVERT ELEV. 1195.1'

EASTING: 4867270.4969

NORTHING: 3741416.1053

BREAK EXISTING 12"Ø CLAY TILE

FROM INTERCEPT LOCATION FOR 100' IN

DOWNSTREAM DIRECTION

(CLAY; CRUSH EXISTING TILE IN PLACE)

TILE #4 - INTERCEPT EXISTING 12" Ø

CLAY TILE AND RE-ROUTE W/

15" Ø HDPE DUAL-WALL PIPE

AT 0.14% SLOPE FOR 617 L.F.

TIE IN INVERT ELEV. 1196.00'

OUTLET INVERT ELEV. 1195.1'

EASTING: 4866643.8385

NORTHING: 3739930.1590

BREAK EXISTING 12"Ø CLAY TILE

FROM INTERCEPT LOCATION FOR 100' IN

DOWNSTREAM DIRECTION

(CLAY; CRUSH EXISTING TILE IN PLACE)

REMOVE EXISTING TILE BENEATH BERM AND INTO WETLAND

100' ALONG EXISTING TILE FROM EAST BERM TOE;

CAP AND PLUG EXISTING TILE AT EACH END OF REMOVAL

TILE #1 - DAYLIGHT 8"Ø

HDPE DUAL WALL

E: 4866867.9313 N: 3742032.5082

INV. ELEV. 1195.1'

INSTALL APPROX. 125 L.F. @ 0.1%

SLOPE; PROVIDE 3' MIN. GROUND

COVER OVER PIPE.

TILE #2 - DAYLIGHT 18"Ø

HDPE DUAL WALL

E: 4867026.6688 N: 3741991.7798

INV. ELEV. 1195.1'

INSTALL APPROX. 667 L.F. @ 0.1%

SLOPE; PROVIDE 3' MIN. GROUND

COVER OVER PIPE.

TILE #3 - DAYLIGHT 15"Ø

HDPE DUAL WALL

E: 4866754.0391 N: 3741494.9597

INV. ELEV. 1195.1'

INSTALL APPROX. 522 L.F. @ 0.3%

SLOPE; PROVIDE 3' MIN. GROUND

COVER OVER PIPE.

TILE #4 - DAYLIGHT 15"Ø

HDPE DUAL WALL

E:4866533.3880 N:3740536.4073

INV. ELEV. 1195.1'

INSTALL APPROX. 617 L.F. @ 0.14%

SLOPE; PROVIDE 3' MIN. GROUND

COVER OVER PIPE.

AFFIX SEAL: DUCKS UNLIMITED, INC.

ON:

G R

A N

C R

N A L

M A N

B O

V A R D

B U

A N

3-w w w .d uc ks

.o rg

U se rs \l w oo db ur y\ 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

\W R

H T

R S O

N \C

3D _D

R A W

\W ri gh t- Pe te rs on -S ite P la n.

dw g, /9

Lu ca s W oo db ur y, C

S ite

P la n, N on e

CAD FILE:

DRAWN BY:

SURVEYED BY:

BIOLOGIST:

DATE:

PROJECT NUMBER:

R ev is io ns D at e

B y

R ev is io n S he et

C101

6-19-24

T.P.

A.S., J.W.

C.K.

A.S.

Wright-Peterson-Site Plan

C T

N O

R I9

0D W

H T

C O

U N

W A

A N

IA-340-8

SEPTIC SYSTEM MODIFICATION INCLUDES ALL

MATERIAL, EQUIPMENT, AND LABOR NECESSARY

TO REMOVE EXISTING 5" CPP SEPTIC LINE AND

DISCONNECTING THE SEPTIC SYSTEM FROM THE

COUNTY TILE. REMOVAL IS LIMITED TO THE PIPE

THAT IS LOCATED WITHIN THE EASEMENT.

-2

A .S

R C S /I

D A

CONSTRUCTION SITE ACCESS WILL BE ON 200TH

ST. ALONG THE EASEMENT BOUNDARY.

PROPOSED 200TH STREET SITE ACCESS

AutoCAD SHX Text NOTE: EXISTING TILE ROUTED THROUGH WETLAND SHALL BE CRUSHED/PLUGGED IN MULTIPLE LOCATIONS; A RISER INLET SHALL BE PROVIDED IN STILLING BASIN DOWNSTREAM OF WEIR TO COLLECT TILE BASE FLOW TO BE ROUTED BACK INTO THE TILE SYSTEM.

AutoCAD SHX Text

200TH STREET

AutoCAD SHX Text

NELSON AVE

AutoCAD SHX Text

PETERSON, RICK E.

AutoCAD SHX Text

PETERSON, RICK E.

AutoCAD SHX Text

CROWE FARMS, LLC

AutoCAD SHX Text

CASADY FAMILY REVOCABLE TRUST

AutoCAD SHX Text

PETERSON, RICK E.

AutoCAD SHX Text

SEGO REVOCABLE TRUST, JOHN & SEGO REVOCABLE TRUST, SHERYL.

AutoCAD SHX Text

HOUSE

AutoCAD SHX Text

NOTE:

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GRAPHIC SCALE

1 inch = feet30

30 0 15 30 60 120

PLAN - EMBANKMENT

182 L.F. TILE BREAK

ON 14"Ø CLAY TILE

248 L.F. TILE BREAK

ON 12"Ø CONCRETE TILE

CMP DRAW-DOWN

STRUCTURE INTAKE RISER

CMP DRAW-DOWN

STRUCTURE OUTLET

18"Ø SURFACE INLET/RISER;

TIED INTO 14" EXISTING TILE

NWL ELEVATION 1194.1'

TOP OF BERM

ELEVATION 1198.7

12' WIDE TOP

GRAPHIC SCALE

1 inch = feet50

50 0 25 50 100 200

PROFILE - EMBANKMENT AT PRIMARY SPILLWAY

10:1 VERTICAL EXAGGERATION

SHEET PILE STRUCTURE

(SEE SHEET C301 FOR DETAILS)

START OF PROPOSED BERM

STA 0+00

ELEV.: 1198.7

BERM GRADE BREAK

STA. 7+50.00

ELEV.: 1098.7'

BERM GRADE BREAK

STA. 8+44.14

ELEV. 1198.7

END OF PROPOSED BERM

STA 13+09

ELEV.: 1198.7

EXISTING GROUND

SUBMERGED BERM

CMP DRAW-DOWN STRUCTURE

GROUTED RIPRAP STILLING BASIN

AND OUTLET CHANNEL

60' WIDE SHEET PILE WEIR

W/ CREST ELEV. 1194.1'

WETLAND AREA GRADED

DOWN TO ELEV. 1193.0'

60' WEIR

4' DEPTH CLAY CORE

100 YR STORM BOUNCE

AFFIX SEAL: DUCKS UNLIMITED, INC.

ON:

G R

A N

C R

N A L

M A N

B O

V A R D

B U

A N

3-w w w .d uc ks

.o rg

U se rs \l w oo db ur y\ 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

\W R

H T

R S O

N \C

3D _D

R A W

\W ri gh t- Pe te rs on -S ite P la n.

dw g, /9

Lu ca s W oo db ur y, C

Em ba nk m en t Pl an

N on e

CAD FILE:

DRAWN BY:

SURVEYED BY:

BIOLOGIST:

DATE:

PROJECT NUMBER:

R ev is io ns D at e

B y

R ev is io n S he et

C201

6-19-24

T.P.

A.S., J.W.

C.K.

A.S.

Wright-Peterson-Site Plan

C T

N O

R I9

0D W

H T

C O

U N

W A

B A N

K M

A N

R O

IA-340-8

-2

A .S

R C S /I

D A

AutoCAD SHX Text

FLOW

AutoCAD SHX Text

DIKE SHALL BE OVERBUILT 5% FOR SETTLEMENT

AutoCAD SHX Text THIS AREA SHALL BE SLOPED TO DRAIN TOWARDS EXISTING CULVERT; LOW AREAS TO BE FILLED AND LEVELED

AutoCAD SHX Text 3:1

DIKE SHALL BE OVERBUILT 5% FOR SETTLEMENT

0+00

1+00

1+35

5.0'

12.8'

63.6'

0+61

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File details come from the government source that posted it. Updated Jul 13, 2026.