Notice to Bidders.pdf
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- Attached to
- 26-08 Cal883432B (Calhoun)
- Solicitation number
- 26-08 Cal883432B (Calhoun)
- Issued by
- Calhoun 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 the Cal883432B Nutrient Reduction Wetland Project located in Section 32, Township 88 North, Range 34 West in Calhoun County, Iowa. The project encompasses selective clearing, excavation and grading, tied-concrete block mat placement, tile and outlet structures, riprap placement, and seeding. Specific quantities include approximately 13,800 cubic yards of earthwork, 2,750 square feet of tied-concrete block mat, 769 linear feet of tile installation, one water control structure, 31 tons of riprap and erosion stone, and 4 acres of seeding. Sealed bids will be received via the Iowa Management of Procurement and Contracts System (IMPACS) until 3:00 PM on Wednesday, August 26, 2026, with the public bid opening held at the same time via Microsoft Teams. A pre-bid conference is scheduled for 10:00 AM on August 12, 2026 at the Calhoun County Conservation office in Rockwell City, Iowa; attendance is encouraged but not mandatory. Construction must commence within 7 days of the preconstruction meeting and be completed by November 30, 2026, with seeding deadlines established for December 15, 2026 for both buffer and structure areas.
The estimated construction cost range is $135,000 to $155,000. Bidders must submit a bid bond equal to ten percent of the bid amount and register with the Iowa Department of Inspections, Appeals & Licensing. The successful bidder will be required to furnish a Performance/Payment Bond in the amount of one hundred percent of the contract price. Plan holders must register either by attending and signing in at the pre-bid conference or by contacting Tracy Blocker at 515-344-6279 or tracy.blocker@iowaagriculture.gov to receive meeting minutes, addenda, and the updated plan holders list. Contract documents, including plans and construction specifications prepared by ISG Inc., are available through the Iowa Department of Administrative Services website. Written questions regarding plans and specifications must be directed to Spencer Pech at ISG Inc. (spencer.pech@isginc.com, 563-920-5758), with a copy to Tracy Blocker, and must be received by 3:00 PM on August 19, 2026 to be included in a final addendum.
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Other files
| File | Type | Posted |
|---|---|---|
| Schedule of Prices Worksheet.pdf | ||
| Schedule of Prices - REVISED.pdf | ||
| Proposal - Acknowledgment - Affidavit.pdf | ||
| Bid Bond.pdf | ||
| Proposal-Acknowledgment-Affidavit Doc CC.pdf | ||
| Specifications - REVISED.pdf | ||
| Plans - REVISED.pdf | ||
| General Requirements.pdf | ||
| Specifications.pdf | ||
| Plans.pdf | ||
| Addendum 1 & Pre-bid.pdf | ||
| Appendix I.pdf |
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Text version
Cal883432B Nutrient Reduction Wetland Project DOCUMENT AA Bid No. 26-08 NOTICE-TO-BIDDERS
AA
NOTICE-TO-BIDDERS
Cal883432B Nutrient Reduction Wetland Project Section 32, Township 88 North, Range 34 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, August 26, 2026. The bid opening, open to the public, will be held through IMPACS at 3:00 PM local time, on Wednesday, August 26, 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,,352050218#. 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.
In general, the work involves, but is not limited to, selective clearing, excavation and grading, tied-concrete block mat placement, along with tile and outlet structures, riprap placement, and seeding. This project includes around 13,800 cubic yards of earthwork, 2,750 square feet of tied-concrete block mat, 769 linear feet of various tile installation, a water control structure, 31 tons of riprap and erosion stone, 4 acres of seeding. The estimated construction cost range for this project is $135,000 to $155,000.
Construction will commence within 7 days of the preconstruction meeting, unless otherwise mutually agreed upon.
Construction deadline: 11/30/2026 Seeding deadline-buffer: 12/15/2026 (Buffer Seeding must be done within seeding period)
Seeding deadline-structure: 12/15/2026 (Structure Seeding must be done within seeding period)
A pre-bid conference will be held at 10:00 AM, on August 12, 2026 at the Calhoun County Conservation, 905 W High St, Rockwell City, IA 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 ISG Inc, 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://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.
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 Spencer Pech, P.E., ISG, spencer.pech@isginc.com , 563-920-5758 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 August 19, 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
https://das.iowa.gov/vendors/bidding-opportunities#vendor-bid-opportunities https://solutions.sciquest.com/apps/Router/SupplierLogin?CustOrg=DASIowa
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