Prebid Meeting Minutes and Addendum 1.pdf

Division of Soil Conservation and Water Quality

Cover Sheet

To: All plan holders From: Tracy Blocker, Division

Pages: Phone: 515-344-6279

Re: Kos972821A Nutrient Reduction Wetland (Bid 26-01) Date: May 12, 2026

Comments: Page

• Cover Sheet 1

• Addendum No. 1 with Attachments 1, 2 and 3 2-10

• Pre-Bid Meeting Minutes 11-14

• Pre-Bid meeting attendance list 15

• Updated plan holders list 16

• Electronic files for grading can be obtained by e-mail by contacting Andrew Schippers with Ducks Unlimited at 832.704.3286 aschipers@ducks.org.

- END OF COVER PAGE -

May 8, 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 KOS972821A Nutrient Reductionl Wetland Project – Bid No. 26-1 Kossuth County, Iowa

This addendum forms a part of the bidding contract documents and modifies the original bidding documents posted on April 16, 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 26-1 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, 26-1 (See Attachment No.1)

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

DOCUMENT AA – NOTICE TO BIDDERS (See Attachment No. 2) The Notice to Bidders for 26-1 has been updated to note that construction of this project cannot start until after August 1st, 2026 (See attachment No. 2)

Plans (See Attachment No. 3)

Revised Plan C002 has been issued, with updated quantity for Bid Item #14 “Topsoil”. An additional table showing earthwork estimates has been included. The Construction Notes for Bid Items #8 and #14 have also been updated. Attached is the revised Plan C002.

Sincerely, Sara Smith, P.E.

Water Resources Bureau

Attachment No. 1 – Updated Document CC Attachment No. 2 – Updated Document AA Attachment No. 3 – Revised Plans C002.

End of Addendum No. 1

KOS972821A Nutrient Reduction Wetland Project DOCUMENT CC – Attachment 1 Bid No. 26-1 PROPOSAL AND SCHEDULE OF PRICES

Time and Date for Bid Submissions: 3:00:00 PM, 05/20/2026

BIDDER LOGIN

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

Time and Date of Bid Opening: 3:00 PM, May 20, 2026 Bid Opening TEAMS: +1 469-998-7627, 771541789#

Project Description and Location: KOS972821A Nutrient Reduction Wetlands Project Section 21, Township 97 North, Range 28 West Kossuth County, Iowa

PROPOSAL AND SCHEDULE OF PRICES

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

Located at ( ) (FULL Mailing Address) (Telephone Number)

Amount of

Proposal Guarantee

Description of Work Specified Completion Date Liquidated Damages

10% of Base Bid

All Work Except Seeding

December 31, 2026

$175.00 Per Day

Seeding - Structure

Seeding - Buffer

May 15, 2027 June 30, 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:

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 ____________________

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

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

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

SCHEDULE OF PRICES

KOS972821A

Contract No. 26-1 Section 21, Township 97 North, Range 28 West, Kossuth County, Iowa

Name of Bidder:_____________________________________________________________________________

Item No.

Work or Material Spec No.

Estimated Quantity

Unit Unit

Total Price

1 Site Stripping & Preparation IA CS-001 1 LS

2 Crop Damages IA CS-001 - - - -

3 Structure Seeding IA CS-006 1 AC

4 Buffer Seeding IA CS-006 16 AC

5 Mobilization & Demobilization CS-008 1 LS

6 Drainage Tile Investigation IA CS-009 1 LS

7 Steel Sheet Piling IA CS-013 1,444 SF

8 Excavation (General) IA CS-021 6,962 CY-P

9 Earthfill (General) IA CS-023 1,595 CY-P

10 Earthfill (General Berm) IA CS-023 1,627 CY-P

11 Earthfill (Berm Core) IA CS-023 924 CY-P

12 Drainfill (Sand) IA CS-024 83 TN

13 Filter Diaphragm IA CS-024 1 LS

14 Topsoil Placement IA CS-026 680 CY-P

15 Toe Drain (6" Perf. CPP) IA CS-046 110 LF

16 12"Ø HDPE Dual-Wall (Perforated) IA CS-046 232 LF

17 12"Ø HDPE Dual-Wall (Non-Perforated) IA CS-046 173 LF

18 48" Aluminum Water Control Structure (WCS) IA CS-051 1 LS

19 15"Ø Aluminum CMP Drawdown Pipe IA-CS-051 91 LF

20 Stoplog Storage Structure

IA CS-046, IA

CS-081 1 LS

21 CMP Outlet - 15"Ø IA CS-051 20 LF

22 CMP Outlet - 8"Ø IA CS-051 40 LF

23 Riprap (IA DOT Class E) IA CS-061 548 TN

24 Concrete Grout IA CS-062 108 CY

25 36" Aluminum CMP Riser Inlet IA CS-051 1 LS

26 Dewatering IA CS-011 1 LS

SUB-TOTAL BASE BID….……………………………………………………………………………$________________

IMPACS will have only 25 bid items listed.

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

Attachment No. 2

Revised Document AA “Notice to Bidders”

The following statement has been added:

“Construction cannot start until After August 1st, 2026”.

KOS972821A Nutrient Reduction Wetland Project Bid No. 26-1

Attachment No. 3

Revised PlansC002

N O

TI

C E:

C O

N S

TR

U C

TI

O N

S

IT

E S A

FE

TY

I

S T

H E

S O

LE

R

ES

PO

N S

IB

IL

IT

Y O

F

TH

E C O

N

TR

A C

TO

R

D U

C K S U

N

LI

M

IT

ED

IN

C

S H

A

LL

N O

T A S S U

M E

A N

Y R

ES

PO

N

S

IB

IL

IT

Y

FO

R T

H E

S A

FE

TY

O

F

TH

E W

O R K P

ER

FO

R M

ED

PE

R S O

N S E

N G

A G

ED

I

N T

H E

W O

R K

N

EA

R B Y

S

TR

U C

TU

R

ES

O

R O

F O

TH

ER

P

ER

S O

N S O

N -S

IT

E.

TH

IS

M A

TE

R

IA

L, D

A

TA

A N

D I

N

FO

R M

A

TI

O N

I S T

H E

PR

O

PE

R

TY

O F

D U

C K S U

N

LI

M

IT

ED

IN

C

I T

M A Y

N O

T B E

U S

ED

O R R

EP

R O

D U

C

ED

F O

R A

N Y

PU

R

PO

S E

W

IT

H O

U T

TH

E

PR

IO

R W

R

IT

TE

N

C O

N S

EN

T O

F A N

A U

TH

O

R

IZ

ED

A

G

EN

T O

F D

U C K S U

N

LI

M

IT

ED

IN

C

D U

C K S U

N

LI

M

IT

ED

IN

C

M A K

ES

N O

R

EP

R

ES

EN

TA

TI

O

N O

R W

A R R A N

TY

O

F A N

Y K

IN

D R

EG

A R D

IN

G

T H

IS

M

A

TE

R

IA

L, D

A

TA

A N

D I

N

FO

R M

A

TI

O N

IN

C

LU

D

IN

G

B U

T N

O T

LI

M

IT

ED

T O

TH

E A C C U

R A C Y

O F

TH

E

M A

TE

R

IA

L, D

A

TA

A N

D I

N

FO

R M

A

TI

O N

O R I

TS

S

U

IT

A B

IL

IT

Y

FO

R A

N Y

PU

R

PO

S E.

A

LL

U S E

O F

TH

E

M A

TE

R

IA

L, D

A

TA

A N

D I

N

FO

R M

A

TI

O N

I S

A T

TH

E

U S

ER

S S

O

LE

R

IS

K

B Y

U S

IN

G A

N Y

O F

TH

IS

M A

TE

R

IA

L, D

A

TA

A N

D I

N

FO

R M

A

TI

O N

U

S

ER

A G

R

EE

S T

H A T

D U

C K S U

N

LI

M

IT

ED

IN

C

IS

N

O T

R

ES

PO

N

S

IB

LE

F

O R T

H

EI

R U

S E

O F

TH

E

M A

TE

R

IA

L, D

A

TA

A N

D I

N

FO

R M

A

TI

O N

O R T

H E

R

ES

U

LT

S T

H

ER

EO

F.

IT

I

S A

V

IO

LA

TI

O N

O F

LA

W

F O

R A

N Y

PE

R S O

N

U N

LE

S S T

H

EY

A R E

A C

TI

N G

U N

D

ER

T H

E D

IR

EC

TI

O

N O

F A L

IC

EN

S

ED

P R O

FE

S S

IO

N A L

EN

G

IN

EE

R

A R C H

IT

EC

T, L

A N

D S C A

PE

A R C H

IT

EC

T O

R L

A N

D S

U R V

EY

O R

TO

A

LT

ER

A N

I

TE

M I

N A

N Y

W A Y.

I F

A N

I

TE

M B

EA

R

IN

G T

H E

S

TA

M P

O F

A

LI

C

EN

S

ED

P R O

FE

S S

IO

N A L

IS

A

LT

ER

ED

TH

E A

LT

ER

IN

G E

N G

IN

EE

R

A R C H

IT

EC

T, L

A N

D S C A

PE

A R C H

IT

EC

T O

R L

A N

D S

U R V

EY

O R S

H A

LL

S

TA

M P

TH

E

D O

C U

M

EN

T A N

D I

N C

LU

D E

TH

E

N O

TA

TI

O N

A

LT

ER

ED

B Y"

F O

LL

O

W

ED

B Y

TH

EI

R S

IG

N

A

TU

R E, T H

E D

A

TE

O F

S U

C H

A

LT

ER

A

TI

O N

A N

D A

S

PE

C

IF

IC

D

ES

C R

IP

TI

O

N O

F

TH

E A

LT

ER

A

TI

O N

6-

-2

A .S

6-

-2

-2

7-

A .S

A .S

N O

T F

O R

C O

N S

T R

U C

T

IO

N

AFFIX SEAL: DUCKS UNLIMITED, INC.

ON:

G R

EA

T

LA

K

ES

/A

TL

A N

TI

C R

EG

IO

N A L

O

FF

IC

E

N

EW

M A N

B O

U

LE

V A R D

B U

IL

D

IN

G

S

TE

D

EX

TE

R

M

IC

H

IG

A N

(7

3-w w w .d uc ks

.o rg

C

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

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

D oc um en ts

\I ow a\

_C 3D

P ro je ct s\

IA

-3

-2 C

R

EP

P R O

JE

C

TS

\K O

S S U

TH

M

A N

S K E

0-

\C

3D _D

R A W

IN

G

\I A -3

-1

C O

V

ER

S H

EE

T

S

PE

C S .d w g, /7

/2

1:

P

M

A nd re w

S ch ip pe rs

S pe cs

N ot es

N on e

CAD FILE:

DESIGNED BY:

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

10-27-25

T.P.

A.S.,A.B.

A.S., W.J., C.K.

A.S.

IA-340-15 COVER SHEET & SPECS

K O

S

A K O

S S U

TH

C

O U

N

TY

IO

W

A

S

PE

C

IF

IC

A

TI

O N

S

Q U

A N

TI

TI

ES

N O

TE

S

US-IA-340-15

6-

-2

A .S

PR

EL

IM

IN

A R Y

S

IT

E

PL

A N

6-

-2

R

EV

IS

ED

S

IT

E

PL

A N

A .S

-2 7-

FI

N A L

PL

A N

S A .S

ESTIMATED QUANTITIES

NOTE # BID ITEM # SPEC # DESCRIPTION QUANTITY UNIT

1 1 IA CS-001 SITE STRIPPING & PREPARATION LS 1.0

2 2 IA CS-001 CROP DAMAGE AC 0.0

3 3 IA CS-006 STRUCTURE SEEDING AC 1.0

4 4 IA CS-006 BUFFER SEEDING AC 16.0

5 5 CS-008 MOBILIZATION & DEMOBILIZATION LS 1.0

6 6 IA CS-009 DRAINAGE TILE INVESTIGATION LS 1.0

7 7 IA CS-013 STEEL SHEET PILING SF 1444.0

8 8 IA CS-021 EXCAVATION (GENERAL) CY-P 6,962.0

9 9 IA CS-023 EARTHFILL (GENERAL) CY-P 1,595.0

10 10 IA CS-023 EARTHFILL (GENERAL BERM) CY-P 1,627.0

11 11 IA CS-023 EARTHFILL (BERM CORE) CY-P 924.0

12 12 IA CS-024 DRAINFILL (SAND) TN 83.0

13 13 IA CS-024 FILTER DIAPHRAM LS 1.0

14 14 IA CS-026 TOPSOIL PLACEMENT CY-P 680.0

15 15 IA CS-046 TOE DRAIN (6"Ø PERF. CPP) LF 110.0

16 16 IA CS-046 12"Ø HDPE DUAL-WALL (PERFORATED) LF 232.0

17 17 IA CS-046 12"Ø HDPE DUAL-WALL (NON-PERF.) LF 173.0

18 18 IA CS-051 48"Ø ALUMINUM WATER CONTROL STRUCTURE (WCS) LS 1.0

19 19 IA CS-051 15"Ø ALUMINUM CMP DRAWDOWN PIPE LF 91.0

20 20 IA CS-046,

IA CS-081 STOPLOG STORAGE STRUCTURE LS 1.0

21 21 IA CS-051 CMP OUTLET - 15"Ø LF 20.0

22 22 IA CS-051 CMP OUTLET - 8"Ø LF 40.0

23 23 IA CS-061 RIPRAP (IA DOT CLASS E) TN 548.0

24 24 IA CS-062 CONCRETE GROUT CY 108.0

25 25 IA CS-051 36" ALUMINUM CMP RISER INLET LS 1.0

26 26 IA CS-011 DEWATERING LS 1.0

CONSTRUCTION NOTES:

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

EXPANSION, SUBMERGED BERMS, AUXILIARY SPILLWAY, AND TILE COVER (ESTIMATED STRIPPING QUANTITY IS 2,711 C.Y.).

THE TOPSOIL MATERIAL SHALL BE STOCKPILED ON-SITE FOR RESPREAD, WHICH IS INCLUDED IN A SEPARATE BID ITEM.

WASTE MATERIAL SHALL BE DISPOSED OF ON-SITE AT DESIGNATED AREAS, DESCRIBED IN "BIDDING NOTES". THIS BID ITEMSHALL ALSO INCLUDE CLEARING & GRUBBING OF 0.8 ACRE PATCH OF TREES. CONTRACTOR SHALL REMOVE TREES FROM

SITE.

2. CROP DAMAGES WILL BE A PASS-THROUGH COST BY THE CONTRACTOR TO THE LANDOWNER. ENGINEER WILL MEASURE THIS AREA AND IDALS WILL AGREE WITH THE LANDOWNER ON A UNIT COST DURING CONSTRUCTION. BID ITEM FOR CROP DAMAGE SHALL INCLUDE AREA OF CROPS DAMAGED, AS NECESSARY, IN ORDER TO COMPLETE THE WORK AS DETAILED. CONTRACTOR

SHALL MINIMIZE CROP DAMAGE AS MUCH AS POSSIBLE DURING CONSTRUCTION ACTIVITIES.

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

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

5. BID ITEM FOR MOBILIZATION & DEMOBILIZATION SHALL INCLUDE THE SUPPLY OF ALL LABOR, MATERIAL AND EQUIPMENT TO TRANSPORT ALL NEEDED LABOR, MATERIAL AND EQUIPMENT, TO AND FROM THE PROJECT SITE, TO SUCCESSFULLY COMPLETE THE PROJECT AS SHOWN ON THE PLANS. ANY ADDITIONAL MOBILIZATION OF MANPOWER, EQUIPMENT, OR MATERIALS REQUIRED TO COMPLETE THE PROJECT SHALL BE PROVIDED BY THE CONTRACTOR AT NO ADDITIONAL EXPENSE. ANY AND ALL WORK NEEDED TO PROVIDE ACCESS TO THE SITE TO COMPLETE CONSTRUCTION ACTIVITIES SHALL BE INCLUDED WITHIN THIS BID ITEM. THIS WORK SHALL ALSO INCLUDE RESTORATION OF THE ACCESS ROUTES UPON CONSTRUCTION COMPLETION.

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. CONTRACTOR SHALL LOOK FOR EVIDENCE OF TILE DURING EXCAVATION OF THE CORE TRENCH, AS WELL AS DURING EXCAVATION OF THE POOL AREAS. ANY TILE FOUND SHALL BE PLUGGED TO ENSURE THEY ARE NON-FUNCTIONAL, IN ACCORDANCE WITH THE PROJECT SPECIFICATIONS.

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

STRUCTURE.

8. BID ITEM FOR EXCAVATION (GENERAL) SHALL CONSIST OF EXCAVATION AND GRADING OF MATERIAL FOR THE BERM CORE TRENCH, SEDIMENTATION BASIN, AND WETLAND EXPANSION AREAS BEYOND THE INTIAL 12" OF TOPSOIL STRIPPING.

EARTHWORK QUANTITIES ASSUME 50% OF GENERAL EXCAVATION MATERIAL CAN BE UTILIZED FOR GENERAL EARTHFILL, WHILE THE REMAINING 50% CAN BE UTILIZED AS TOPSOIL/SPOIL.

9. BID ITEM FOR EARTHFILL (GENERAL) SHALL CONSIST OF THE EARTHFILL NECESSARY TO CONSTRUCT THE SUBMERGED BERMS, AUXILIARY SPILLWAY, AND TILE 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 BERM) 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.

11. BID ITEM FOR EARTHFILL (BERM CORE) SHALL CONSIST OF EXCAVATING, PLACING, AND COMPACTING EARTHFILL NECESSARY TO CONSTRUCT THE PORTION OF THE EMBANKMENT DESIGNATED AS THE EMBANKEMENT CORE, INCLUDING THE CORE TRENCH. COHESIVE MATERIAL TAKEN FROM THE DESIGNATED BORROW AREA SHOULD BE USED FOR THIS AREA (NEAR CONTRACTOR ACCESS/STAGING AREA, OR OTHER AS APPROVED BY ENGINEER). ESTIMATED PLAN VALUE INCLUDES 25%

SHRINKAGE FACTOR.

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

13. BID ITEM FOR FILTER DIAPHRAGM SHALL CONSIST OF FURNISHING AND PLACING ALL MATERIAL REQUIRED IN THE CONSTRUCTION OF FILTER DIAPHRAGM AROUND CONDUITS. THIS ITEM WILL CONSIST OF THE EXCAVATION NECESSARY TO CONSTRUCT THE FILTER, INCLUDING BACKFILLING WITH FILTER GRAVEL, (51 TON, THIS MATERIAL IS INCLUDED IN BID ITEM

12) OF IA DOT GRADATION 1 SAND MEETING 4110, AND (4 TON) OF IA DOT GRADATION 6 - 3/8" CHIP.

14. 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. 6" THICK TOPSOIL SHALL BE RE-SPREAD OVER THE EXCAVATED AREAS WITHIN THE POOL & CHANNEL. GRADING AREAS WITHIN THE WETLAND POOL THAT WILL HAVE 3 FEET OR LESS OF WATER DEPTH SHALL BE COVERED WITH 6" TOPSOIL MATERIAL RE-SPREAD OVER THE EXCAVATION AREA. THIS WILL BE DETERMINED IN THE FIELD BY THE ENGINEER'S REPRESENTATIVE AND, IF IT IS NECESSARY, THEN IT SHALL BE MEASURED AND PAID OUT

AS AN ADDITIONAL QUANTITY TO THE BID ITEM.

15. 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.

16. BID ITEM FOR 12"Ø HDPE DUAL-WALL (PERFORATED) SHALL CONSIST OF FURNISHING AND INSTALLING 12-INCH, PERFORATED, HDPE, DUAL-WALL CORRUGATED POLYETHYLENE TUBING USED AS A DRAIN TILE AS SHOWN ON THE DRAWINGS.

MEASUREMENT AND PAYMENT FOR 12-INCH PERFORATED DUAL-WALL POLYETHYLENE TUBING SHALL BE ON AN INSTALLED

LINEAR FOOT BASIS, AND SHALL INCLUDE ALL NECESSARY FITTINGS AND ADAPTERS.

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

SEPARATE BID ITEM (SEE NOTE 21).

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

TO FABRICATION.

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

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 - 15"Ø SHALL CONSIST OF FURNISHING AND INSTALLING THE 15"Ø CMP AND FITTINGS SHOWN ON THE PLANS FOR TILE OUTLETS, INCLUDING ANIMAL GUARD AT OUTLET END OF PIPE (SEE NOTE 17).

22. 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 (SEE NOTE 15)

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

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

24. BID ITEM FOR CONCRETE GROUT SHALL CONSIST OF FURNISHING AND PLACING CONCRETE GROUT ON THOSE PORTIONS OF THE RIPRAP SHOWN ON THE DRAWINGS. GROUT FILL QUANTITY IS BASED ON AN APPLICATION RATE OF 0.6FT3/FT2 OF RIPRAP.

WHITE PIGMENTED CURE SHALL BE APPLIED AND IS INCIDENTAL TO THIS BID ITEM.

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

FABRICATION.

26. BID ITEM FOR DEWATERING SHALL INCLUDE ALL MATERIAL, EQUIPMENT, AND LABOR REQUIRED TO PROVIDE DEWATERING AND WATER MAINTENANCE FOR THE DURATION OF THE PROJECT. THIS SHALL INCLUDE BUT IS NOT LIMITED TO EXCAVATING DRAINAGE CHANNELS/SUMPED AREAS, PROVIDING PUMPING OPERATIONS, AND CREATING WATER DIVERSIONS AS

NECESSARY TO COMPLETE THE PROJECT/WORK.

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 ARE FROM NRCS FOR THE STATE OF IOWA ADAPTED BY IDALS/DU.

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

THE CONSTRUCTION OF THIS PROJECT.

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

TO THE PRINCIPAL CREST ELEVATION.

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

ENGINEER AND IDALS.

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

MATERIALS, AS REQUESTED BY THE ENGINEER.

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

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

INDENTIFIED UNDER THE FEDERAL ENDANGERED SPECIES ACT, OR WILL DESTROY OR ADVERSELY MODIFY THE CRITCIAL HABITAT OF SUCH A SPECIES. THE ENGINEER WILL CONSULT WITH A QUALIFIED

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

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

OTHERWISE INDICATED BY THE NATIONAL BALD EAGLE MANAGEMENT GUIDELINES PUBLISHED BY THE US FISH AND WILDLIFE SERVICE MAY 2007. NOTE, THE PRIMARY NESTING SEASON IS MAY 15

THROUGH AUGUST 1.

7. TO PROTECT THREATEND/ENDANGERED BATS, TREES SHALL BE REMOVED IN ACCORDANCE WITH IOWA DOT ARTICLE 2101.10 BETWEEN OCTOBER 1ST AND MARCH 31ST. TREE FELLING IN THAT TIME WILL ONLY REQUIRE TREES 3" IN DIAMETER AND LARGER TO BE CUT 3 TO 4 FEET ABOVE GROUND LINE. THE CONTRACTOR SHALL LIMIT REMOVAL OF FOREST COVER TO THOSE AREAS WHICH ARE NECESSARY FOR

THE CONSTRUCTION OF THE WORK AND AS DIRECTED BY THE ENGINEER.

8. IF SAND IS FOUND DURING EXCAVATION THE ENGINEER MUST BE NOTIFIED IMMEDIATELY TO DETERMINE NECESSARY REMEDIATION ACTIONS. WORK IN THE AREA WHERE SAND IS IDENTIFIED

SHALL BE POSTPONED UNTIL A COURSE OF ACTION CAN BE DETERMINED.

9. ALL WORK SHALL BE COMPLETED PER NRCS SPECIFICATIONS. IF REQUIRED WORK IS NOT INCLUDED IN NRCS SPECIFICATIONS, WORK SHALL CONFORM TO THE CURRENT EDITION OF THE IOWA STATEWIDE

URBAN DESIGN AND SPECIFICATIONS (SUDAS).

10. THE VOLUMES AND QUANTITIES AS PROVIDED ARE ESTIMATED FROM TOPOGRAPHIC INFORMATION, ACQUIRED FROM MULTIPLE SOURCES, USING A COMPUTER PROGRAM. PAYMENT WILL BE MADE BASED ON PLAN QUANTITIES UNLESS OTHERWISE NOTED OR ADDITIONAL EXCAVATION IS DIRECTED BY THE

ENGINEER. EXCAVATION RESULTING FROM THE CONTRACTOR'S IMPROPER CONSTRUCTION

OPERATIONS, SITE CONDITIONS, OR OTHERWISE, WILL NOT BE INCLUDED FOR MEASUREMENT AND

PAYMENT.

BIDDING NOTES:

1. BORROW EXCAVATION: 3,111 C.Y. (INCIDENTAL TO BID ITEM NO. 8, NO. 9, NO. 10 & NO. 11)

(REFERENCE IA CS-021 & IA CS-023)

2. FILL BORROW PIT WITH EXCESS TOPSOIL: 3,111 C.Y. (INCIDENTAL TO BID ITEM NO. 1)

(REFERENCE IA CS-001 3.0 STRIPPED MATERIAL DISPOSAL)

3. PLACE SPOIL: 4,847 C.Y. (INCIDENTAL TO BID ITEM NO. 1, NO. 8, NO. 9, NO. 10 & NO. 11.)

(REFERENCE IA CS-001 3.0 STRIPPED MATERIAL DISPOSAL, IA CS-021 & IA CS-023)

5-

7-

A D

D

EN

D U

M

A .S

KOS972821A 26-01

PREBID MEETING

April 23, 2026, 10:30AM USDA-NRCS, 605 E State ST Algona

AGENDA - KOSSUTH COUNTY WETLAND PROJECT

Tracy Blocker, Division of Soil Conservation and Water Quality (Division) opened the meeting.

A) Introductions

• Introductions

• There are four projects being bid at this time, including this one; there in one in Hamilton County and two in Calhoun Couty being bid as one contract

• This wetland project is being funded as part of the Water Quality Initiative that is being used to help implement the Iowa Nutrient Reduction Strategy.

B) Bidding

1. Time of Completion:

The final date for completion of all work except for seeding is set for December 31, 2026. The final date for completion of seeding is May 15, 2027 for the structure and June 30, 2027, for the buffer.

2. Liquidated Damages:

There are liquidated damages provisions on this project. These damages reflect additional administrative, design, and inspection costs, as well as continued costs to the natural environment.

If all work except for seeding is not completed by December 31, 2026 absent a No-Fault Extension, the Contactor may be assessed damages in the amount of $175 per day. If the seeding is not subsequently completed by May 15, 2027 for the structure and June 30, 2027 for the buffer absent a No-Fault Extension, the Contractor may be assessed damages in the amount of $125 per day.

3. Taxes:

Since this is state contract, there is no sales tax for materials purchased. We will be providing a tax exemption certificate to the awarded contractor as indicated in the last page of the appendix of construction contract documents. This should be considered when determining the unit prices submitted in the bid.

4. Measurement and Payment:

The specifications describing the work to be accomplished under each particular work item, also describe the method to be used in measuring and calculating the payment quantities for each work item set forth in the proposal. Payments will be made on the basis of monthly estimates in amounts equal to ninety-seven percent (97%) of the value of work completed. Mobilization will be paid at a percentage of the lump sum bid amount for this item equal to the overall percent complete of the project (less retainage). In preparing monthly estimates, advancement will be made therein for ninety-seven percent (97%) of the cost of materials stored on site.

5. Method of Bidding:

This is a unit price contract and bidders shall submit unit price bids as required for the work items covered by the specifications. Prices shall cover complete work and include all costs incidental thereto unless otherwise indicated. The base bid includes all items 1 through 25 in IMPACS for each

April 23, 2026, 10:30AM site. A separate Document CC was provided with the bid package that is to be used for submitting the bid.

Any questions that should be considered as part of an addendum must be submitted to us by May 4, 2026, no later than 3:00 PM. The Division will make every attempt to issue any necessary addenda no later than the day after the last date for questions. If an addendum is sent, please make sure to note on Page CC-2 that you have received and acknowledged the addendum.

If work is added to the contract by the Division after the contract execution which is not covered by a bid price set forth in the Proposal and Schedule of Prices (Document CC), a Change Order or Contract Amendment will be issued as required. If the additional work requires an extension of the contract completion date(s), a Contract Amendment will be issued.

6. Submission of Bids and Bid Security:

Sealed bids will be received by the Iowa Department of Agriculture & Land Stewardship, Division of Soil Conservation and Water Quality (Division), via the Iowa Management of Procurement and Contracts System (IMPACS), until 3:00 PM, May 20, 2026. The bid opening, open to the public, will be held through IMPACS at 3:00 PM, local time, May 20, 2026, when bids will be read aloud.

Interested parties may call in to hear the bid opening using the Microsoft Teams call-in number:

+1 469-998-7627, 771541789#

Bids must be submitted on the appropriate bid forms provided and shall include a bid bond in the amount of ten percent (10%). Bidders must also be registered with the Iowa Department of Inspections, Appeals & Licensing.

7. Evaluation of bids and award of Construction Contract:

This Calhoun County Nutrient Reduction Wetland Project shall be awarded to the lowest responsible responsive bidder as determined by the Division. In evaluating the bids, the Division may consider such factors as alternates, bid price, experience, contracts in default, responsibility of the Bidder, and similar factors in determining which bid it deems to be in the best interest of the Division for the project. In comparing bid prices, the total bids of the various Bidders shall be determined by applying the unit prices bid for each work item against the estimated work item quantities set forth in the Proposal and Schedule of Prices (Document CC).

Bid tabulations for this Calhoun County Nutrient Reduction Wetland Project will be prepared the week following the Bid Opening and distributed to all Bidders. Other plan holders or interested parties must request bid tabulations.

8. Bidder's Qualifications:

All Bidders shall meet the following qualifications:

1. Contractors are required to be registered with the Iowa Department of Inspections, Appeals &

Licensing.

2. Bidders shall, upon request of the Division, submit a statement of Bidder’s qualifications including experience, any contracts that are in default, available equipment, personnel, and financial ability to perform the work as outlined in Section 2 of Document BB.

April 23, 2026, 10:30AM

9. Execution of Contract:

1. The party to whom this «ProjectCounty» County Nutrient Reduction Wetland Project is awarded shall be required to:

✓ execute the Contract;

✓ obtain the appropriate insurance coverage and Performance/Payment Bond;

✓ provide their Iowa Department of Inspections, Appeals & Licensing Public

Registration Number;

✓ and submit the Construction Progress Schedule (Document JJ) within fourteen (14) calendar days from the date of receipt of the Notice-of-Award. In case of failure of the Bidder to execute the Contract, the Division may, at its option, consider the Bidder in default, in which case the bid security accompanying the bid shall become the property of the Division.

2. The Division, within fourteen (14) days of receipt of an acceptable and properly executed

Performance/Payment Bond, certification of acceptable insurance coverage, and properly executed Contract; shall sign the Contract and return to such party an executed copy of the Contract. Should the Division not execute the Contract within such period, the Contractor may, by submitting written notice, withdraw the signed Contract. Such notice of withdrawal shall be effective upon receipt of the notice.

3. The Notice-to-Proceed shall be issued within five (5) days of the execution of the Contract by the Division, provided that the Construction Progress Schedule has been accepted by the Division. Should there be additional time required to make adjustments to the Construction Progress Schedule, the time to issue the Notice-to-Proceed may be extended to allow for this. If the Notice-to-Proceed has not been issued within a thirty (30) day period, or within a greater period mutually agreed upon, the Contractor may terminate the Contract without further liability on the part of either party.

10. Questions and Addenda:

Questions concerning interpretation or intent of the Plans and Construction Specifications should be directed to Andrew Schippers, Ducks Unlimited, aschippers@ducks.org, 832-704-3286 and must copy Tracy Blocker: tracy.blocker@iowaagriculture.gov with the Division. All other questions concerning the Contract Documents should be addressed to Tracy Blocker, Division: 515 344-6279 or tracy.blocker@iowaagriculture.gov.

Any oral interpretations given shall be valid only if confirmed by written addendum. All interpretation requests should be addressed in writing and received no later than 3:00 PM May 4, 2026.

The Division reserves the right to revise or amend the Contract Documents prior to the date set forth for receipt of bids. Such revisions and amendments, if any, shall be announced by an addendum or addenda to the Contract Documents. Copies of such addenda, as may be issued, shall be furnished to all plan holders. Bidders are required to acknowledge receipt of any addenda by listing such addenda in the Proposal and Schedule of Prices (Document CC).

C) Engineer’s Discussion:

1. Ducks Unlimited:

mailto:aschippers@ducks.org

April 23, 2026, 10:30AM

i. IDALS would like to complete this project this year.

ii. Sales Tax Exempt.

iii. 5/4/26 at 3:00 pm is the last day for questions. a. Technical questions should go to Andrew.

iv. Contract Administration questions should go to Tracy.

v. Crop Damage bid item is not on Impact.

vi. Materials do not necessarily need to be made in the US.

vii. Andrew went over Sheet C101 – Site Plan and gave an overview of the project. a. Items discussed were the berm, sheet pile weir, stilling basin, draw-down structure, auxiliary spillway, submerged berms, wetland pool expansion/excavation, sedimentation basin, tile modification, and minor earthwork at fenceline of Reising and Huber properties.

viii. Andrew indicated that the Water Control Structure is fully aluminum and provided 3 manufacturers that can make the structures: Wisconsin Flowgate, Energy Culvert, and Contech.

ix. Andrew proceeded to describe each bid item and read the construction notes on sheet C002.

x. Andrew explained that the bid item for drainage tile investigation is minimal and that DU already has GPS points on the tile that need to be found/modified.

xi. Andrew explained that dewatering is a bid item on this project, which is not typically done.

The reasoning for this is that this is a wetland bottom adjacent to Union Slough NWR and conditions could become wet to work in. We want the contractor to consider this in their bid as there will be no adjustments for dewatering price.

xii. Andrew explained to pay attention that the tile modification uses both non-perforated and perforated pipe.

xiii. Andrew explained the incidental earthwork quantities listed below the bid item table on Sheet C002.

xiv. Andrew explained that the start date of the project cannot proceed until after the primary nesting season date of August 1, 2026 due to the request of FWS.

xv. Andrew explained that the tree removal of the project cannot proceed until after 10/1/26.

2. Addendum No. 1 has been issued to update Bid Item #14 “Topsoil” quantity and to include a

Table with Earthwork quantities. A revised Plan C002 has been issued including these changes and clarifications to the construction notes corresponding to earthwork.

Bid No.: 26-01

Thursday, April 23, 2026 10:30 AM 605 E State ST Algona 515-344-6279

Name City State Email Phone

1 Tracy Blocker Des Moines IA 50309 tracy.blocker@iowaagriculture.gov 515-344-6279

2 Sara Smith Des Moines IA 50309 sara.smith@iowaagriculture.gov 515-422-7335

3 Andrew Schippers Radcliffe IA 50230 aschippers@ducks.org 832.704.3286

4 Christian Kinzie Huxley IA ckinzie@ducks.org 712.254.0246

5 Dean Gronemeyer Spencer IA amydean8190@gmail.com 712.260.5114

6 Dan Preuschl Algona IA dan@rgealgona.com 515.341.3199

7 Grant Arndorfer Wesley IA grant@dornbierinc.com 515.341.4018

Pre-Bid Meeting Sign-in Sheet

Company/Affiliation

Division

DU

IDDA - WFS

Redings Gravel & Ex

Dornbier Inc

USDA Service Center - NRCS

Project ID: Kos972821A Nutrient Reduction Wetland

Division

DU -Engineer of Record

If I can't read your handwritting, I may not be able to send you the addendum or other pertinent information.

as of 05/12/2026 Plan Holders List for Bid 26-01; 26-02; 26-03 Project ID

Name Email Company Street Address City State Zip code Phone

E 26-01 Andrew Schipper aschippers@ducks.org Ducks Unlimited 209 Eugene St Radcliffe IA 832‐704‐3286 x Aaron Crane arcrane1250@gmail.com Aaron Crane Construction LLC 1833 120th St Manchester IA 52057 563-920-1250 x Jean Cornelius bedrockconcrete@gmail.com Bedrock Gravel & Concrete Produts 712-676-3752 x Gene Blazek blazekcorp@msn.com Blazek Corporation 2005 Union Avenue Lawler IA 52154 563‐238‐7150 x Lacey quotes@coleexcavating.com Cole Excavating, LLC 641.823.4700 x Grant Arndorfer grant@dornbierinc.com Dornbier Inc 2602 240th Ave Wesley ia 50483 515.341.4018 x Levi Thies thies2@outlook.com Empire Excavation 219 Lawndale St Odebolt IA 51458 712-660-8137 x Bryce Dooley groundsolutionsseeding@gmail.com Ground Solutions Seeding 3280 230th St Sac City IA 50583 712.210.6432 x Jodi Johnson hjohnsonservices@gmail.com H. Johnson Services, LLC 1943 180th ST Creston IA 50801 515.681.2224 x Michael Michaelis mikem@larsoncontracting.com Larson Contracting Central LLC 508 W Main St PO Box 7 Lake Mills IA 50450 406.890.4211 x Adam Laubenthal ADAM.LAUBENTHAL@HOTMAIL.COM LAUBENTHAL EXCAVATION 515-368-1112 x Jesse Merryman jd51merryman@hotmail.com Merryman Bridge Co. 2019 Irvington Road, PO Box 714 Algona IA 50511 515-341-4740 x Bret Mathews bret.mathews@metalculverts.com Metal Culverts x Jake Schulte jacob.schulte@metalculverts.com Metal Culverts, inc. 573‐636‐7312 x Dan Preuschl dan@rgealgona.com Redings Gravel & Excavating 2001 East Oak Street Algona IA 50511 515-341-3199

E 26-02 Dan Jensen djensen@shive-hattery.com Shive-Hattery West Des Monies IA x Jean Cornelius bedrockconcrete@gmail.com Bedrock Gravel & Concrete Produts 712-676-3752 x Lisa Lauver lisa@cccpender.biz Christiansen Construction Company 402.385.3027 x Lacey quotes@coleexcavating.com Cole Excavating, LLC 641.823.4700 x Levi Thies thies2@outlook.com Empire Excavation 219 Lawndale St Odebolt IA 51458 712-660-8137 x Gemberling Excavating inc x Bryce Dooley groundsolutionsseeding@gmail.com Ground Solutions Seeding 3280 230th St Sac City IA 50583 712.210.6432 x Jodi Johnson hjohnsonservices@gmail.com H. Johnson Services, LLC 1943 180th ST Creston IA 50801 515.681.2224 x John Healy johnhealy@netins.net Healy Excavating 3483 Perkins Avenue Lakeview IA 51450 712-830-9179 x Adam Laubenthal ADAM.LAUBENTHAL@HOTMAIL.COM LAUBENTHAL EXCAVATION 515-368-1112 x Bruce Vonnahme aaronvohhahme@gmail.com Leroy and Sons, Inc. 405 Dunlap Street Arcadia IA 51430 712‐790‐9956 x Derek Ludovissy ludovissyenterprises@gmail.com Ludovissy Enterpirses 702 S. 2nd St PO Box 714 Guttenberg IA 52052 563-880-4866 x Bret Mathews bret.mathews@metalculverts.com Metal Culverts x Jake Schulte jacob.schulte@metalculverts.com Metal Culverts, inc. 573‐636‐7312 x Tory Schmidt tschmidt@tjelectricandcontrols.come TJ Electric & Controls 200 4th Ave NE West Bend IA 50597 515.341.4071

E 26-03 Brandon Short brandon.short@bolton-menk.com Bolton & Menk Inc Engineering 515.509.9296

Eng Nathan Dose nathan.dose@bolton-menk.com Bolton & Menk Ames IA 515.507-1206 x Barry Eggers barry.eggers@icloud.com Bears Bulldozing 1887 J Ave Traer IA 50675 641.485.5872 x Jean Cornelius bedrockconcrete@gmail.com Bedrock Gravel & Concrete Produts 712-676-3752 x Lacey quotes@coleexcavating.com Cole Excavating, LLC 641.823.4700 x Brian Bildstein bbildstein7@gmail.com Dan Oberbreckling Concrete & Excavating Coggon IA 319-721-2230 x Chad McDonald cmcdonald@gehrkeinc.com Gehrke Inc 1405 21st Ave Eldora IA 50627 641.858.6953 x Bryce Dooley groundsolutionsseeding@gmail.com Ground Solutions Seeding 3280 230th St Sac City IA 50583 712.210.6432 x Jodi Johnson hjohnsonservices@gmail.com H. Johnson Services, LLC 1943 180th ST Creston IA 50801 515.681.2224 x Evan Hurd evan.hurd@hls-co.com Heritage Land Solutions (Iron Heritage Properites LLC 302 Broad St Story City IA 50248 515.520.0711 x Will Halstead will.halstead@hls-co.com Heritage Land Solutions (Iron Heritage Properites LLC 302 Broad St Story City IA 50248 515.954.0187 x Laramie Ogden laramie@jpettiecord.com J. Pettiecord, Inc. 1200 Prairie Dr SW Bondurant IA 50035 515.577.8121 x Jace Moore jace.moore@joneswheels.com Jones Contractors and Associates 13635 route 52 Dyersville IA 52040 563.880.7885 x Brett Schipper bedrockconcrete@gmail.com McDowell & Sons Contractors, Inc. 641-640-2216 x James Seehusen jamess@pcius.com PCI PO Box A Reinbeck IA 50669 319-788-4764 x Jake Peterson jake.peterson@petersonconst.com Peterson Construction 515.832.1216 x Lance Stolee lancestolee@handsonexc.com Hands On Excavating, LLC 3305 Ziegler Ave Radcliffe IA 50230 515-338-2439 x Jeremy Rognes Jeremy@rbexc.com Rognes Bos. Excavating, Inc. PO Box86 Lake Mills IA 50450 641.590.3161 x Adam Laubenthal ADAM.LAUBENTHAL@HOTMAIL.COM LAUBENTHAL EXCAVATION 515-368-1112 x Levi Thies thies2@outlook.com Empire Excavation 219 Lawndale St Odebolt IA 51458 712-660-8137 x Anthony Herman Herman Drainage 1982 300th ST Madrid IA 50156 515.438.2508 x Bret Mathews bret.mathews@metalculverts.com Metal Culverts x Jake Schulte jacob.schulte@metalculverts.com Metal Culverts, inc. 573‐636‐7312 x Willis Ubben Ubben Tiling Inc 3255 Stagecoach Rd RR Stratford IA 50249 515.835.0418 x Steve Weidemann weidemann@myyahoo.com Weidemann Inc 105 Tracy St Dows IA 50071 515.852.3802

IDALS Sara Smith sara.smith@iowaagriculture.gov IA Dept of Ag & Land Stewardhsip 1305 E Walnut Des Moines IA 50319 515-422-7335

IDALS Tracy Blocker tracy.bruun@iowaagriculture.gov IA Dept of Ag & Land Stewardhsip 1305 E Walnut Des Moines IA 50319 515-344-6279

Key: Y = on plan holders list, submitted bid; X = on plan holders list, did not submit bid; NP = not on plan holders list, submitted bid; IDALS staff, PR=Plan Rooom;

E=Engineer of Record Division of Soil Conservation & Water Quality - Water Resources Bureau

Kos972821A; Cal883229BN & BS; Ham892326B