Notice to Bidders.pdf
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- Attached to
- 26-02 Cal883229BN & BS (Calhoun)
- Solicitation number
- 26-02 Cal883229BN & BS (Calhoun)
- Issued by
- Carroll County, Iowa
About this file
This is a Notice to Bidders issued by the Iowa Department of Agriculture & Land Stewardship, Division of Soil Conservation and Water Quality, for two nutrient reduction wetland construction projects in Calhoun County, Iowa. The Cal883229BN-North project involves construction of a pumped nutrient reduction wetland requiring approximately 31,200 cubic yards of earthwork, installation of lift stations with solar-powered pumps, water control structures, polyethylene and PVC piping, riprap, turf reinforcing mat, silt fence, and seeding across 16.6 acres. The Cal883229BS-South project is a similar but smaller undertaking requiring approximately 10,300 cubic yards of earthwork and seeding across 1.0 acre. Sealed bids must be submitted via the Iowa Management of Procurement and Contracts System (IMPACS) by 3:00 PM local time on Wednesday, May 20, 2026, with public bid opening on the same date. A pre-bid conference is scheduled for 10:00 AM on April 24, 2026, at the Calhoun County Conservation Board in Rockwell City, Iowa, with attendance encouraged but not mandatory. Construction must commence within 14 days of the preconstruction meeting, with a construction deadline of December 31, 2026, and seeding deadlines of May 15, 2027 (structures) and June 30, 2027 (buffers).
The estimated total construction cost for Cal883229BN-North ranges from $375,000 to $475,000, while Cal883229BS-South ranges from $175,000 to $275,000. Bidders must submit a bid bond equal to ten percent (10%) of the bid amount and be registered with the Iowa Department of Inspections, Appeals & Licensing. The successful bidder will be required to furnish a Performance/Payment Bond equal to 100 percent of the contract price. Interested parties must request inclusion on the plan holders list, which is required to receive meeting minutes, addenda, and updated plan holder lists, by contacting Tracy Blocker at tracy.Blocker@iowaagriculture.gov or 515-344-6279. Contract documents, including plans and construction specifications prepared by Dan Jensen, P.E. of Shive-Hattery, are available through the Iowa Agriculture and DAS websites. Written questions concerning plans and specifications must be directed to Dan Jensen (djensen@shive-hattery.com) and copied to Tracy Blocker, while other contract document questions should be addressed to Tracy Blocker. All written questions must be received by 3:00 PM on May 5, 2026, to be included in a final addendum.
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Other files
| File | Type | Posted |
|---|---|---|
| Schedule of Prices - REVISED.pdf | ||
| General Requirements.pdf | ||
| Plans.pdf | ||
| Addendum 1 & Pre-bid.pdf | ||
| H & H Report.pdf | ||
| Bid Bond.pdf | ||
| Specifications.pdf | ||
| Plans - REVISED.pdf | ||
| Schedule of Prices.pdf | ||
| Proposal & Affidavit.pdf | ||
| Appendix I.pdf | ||
| Proposal & Affidavit - REVISED.pdf | ||
| QA QC Plan.pdf |
Show all 13
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Text version
Cal883229BN-North & BS-South Nutrient Reduction Wetland Project DOCUMENT AA
Bid No. 26-2 NOTICE-TO-BIDDERS
AA
NOTICE-TO-BIDDERS
Cal883229BN-North & BS-South Nutrient Reduction Wetland Project
Section 29, Township 88 North, Range 32 West
Calhoun County, Iowa
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 local time, Wednesday, May 20, 2026. The bid opening, open to the public, will be held through IMPACS at 3:00 PM local time, on Wednesday, 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.
Cal883229BN-NORTH
This project is for a pumped nutrient reduction wetland, CAL883229BN. In general, the work involves, but is not limited to, selective clearing, excavation and grading, installation of lif stations with solar powered pumps, forcemain, tile, inlet risers, water control structures, drawdown pipes, riprap and seeding. This project includes a total of about 31,200 cubic yards of earthwork; installation of a water control structure, inlet risers, 833 linear feet (LF) of polyethylene pipe, a complete lift station with 2 solar powered pumps systems with battery, 92 LF of PVC SCH-80 forcemain, 177 LF of CMP drawdown pipe, 330 tons of riprap and clean stone, 560 square yards of turf reinforcing mat type 2B RECP, 472 LF of silt fence and 16.6 acres of seeding. The estimated total construction cost range for this project is $ 375,000 to $ 475,000.
Cal883229BS-SOUTH
This project is for a pumped nutrient reduction wetland, CAL883229BS. In general, the work involves, but is not limited to, selective clearing, excavation and grading, installation of lif stations with solar powered pumps, forcemain, tile, inlet risers, water control structures, drawdown pipes, riprap and seeding. This project includes a total of about 10,300 cubic yards of earthwork; installation of a water control structure, inlet riser, 210 linear feet (LF) of polyethylene pipe, a complete lift station with a solar powered pump system with battery, 27 LF of PVC SCH-80 forcemain, 114 LF of CMP drawdown pipe, 250 tons of riprap and clean stone, 395 square yards of turf reinforcing mat type 2B RECP, 304 LF of silt fence and 1.0 acres of seeding. The estimated total construction cost range for this project is $ 175,000 to $ 275,000.
Construction will commence within 14 of the preconstruction meeting, unless otherwise mutually agreed upon.
Construction deadline: 12/31/2026 Seeding deadline-structure: 05/15/2027 Seeding deadline-buffer: 06/30/2027
A pre-bid conference will be held at 10:00 AM, on April 24, 2026 at the Calhoun County Conservation Board, 1228 W High
St, Rockwell City 50579, telephone: 515-344-6279. Attendance at the pre-bid conference by prospective bidders is not mandatory but is encouraged.
The Plans and Construction Specifications governing the construction of the proposed improvements have been prepared by
Dan Jensen, P.E., Shive-Hattery, and are hereby made a part of this notice by reference and the proposed contract shall be executed in compliance therewith. Copies of the Contract Documents, including Plans, Construction Specifications, and Bid
Package, are available through the website links:
https://iowaagriculture.gov/dscwq/requests-proposals and https://das.iowa.gov/vendors/bidding-opportunities#vendor-bid-opportunities
• View Other Agency Hosted Solicitations
In order to be included on the plan holders list, which is required to be able to receive meeting minutes, addenda and an updated plan holders list, interested parties must make a written or verbal request to the Division by telephone: 515-344-
6279, or by e-mail: tracy.Blocker@iowaagriculture.gov. Bidders who attend and sign-in to the pre-bid conference will be added to the plan holders list. A printed copy of plans and construction specifications can be viewed by appointment by contacting Tracy Blocker, Division (tracy.Blocker@iowaagriculture.gov, or (515) 344-6279. Printed copies of specifications and plans will be provided to the successful bidder.
https://iowaagriculture.gov/dscwq/requests-proposals https://das.iowa.gov/vendors/bidding-opportunities#vendor-bid-opportunities
Cal883229BN-North & BS-South Nutrient Reduction Wetland Project DOCUMENT AA
Bid No. 26-2 NOTICE-TO-BIDDERS
AA
The successful bidder shall be required to furnish a Performance/Payment Bond in an amount equal to one hundred percent
(100%) of the contract price.
Questions concerning the Plans and Construction Specifications should be in writing and addressed to Dan Jensen, P.E., djensen@shive-hattery.com, and must copy Tracy Blocker, Division, tracy.Blocker@iowaagriculture.gov. All other questions concerning other Contract Documents should be addressed to Tracy Blocker, Division, tracy.Blocker@iowaagriculture.gov or 515-344-6279. To be considered in a final addendum, written questions must be received by 3:00 PM on May 5, 2026.
The Division reserves the right to reject any or all proposals and to waive technicalities and irregularities.
BIDDER LOGIN - https://solutions.sciquest.com/apps/Router/SupplierLogin?CustOrg=DASIowa
END OF DOCUMENT AA
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