Schedule of Prices - REVISED.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 Schedule of Prices document for Bid No. 26-2 issued by the State of Iowa, Department of Agriculture and Land Stewardship, Division of Soil Conservation and Water Quality, for the design and construction of two pumped nutrient reduction wetlands in Calhoun County. The project comprises two separate sites—Cal883229BN (North) and Cal883229BS (South)—with combined construction scope including selective clearing, excavation, grading, solar-powered lift station installation, force mains, tile drainage systems, inlet risers, water control structures, drawdown pipes, riprap placement, and seeding. The North site encompasses approximately 31,200 cubic yards of earthwork across 16.6 acres of seeding, while the South site involves approximately 10,300 cubic yards of earthwork across 1.0 acre of seeding. The bid schedule identifies 31 line items for each site with estimated quantities, including earthfill, excavation, various pipe installations, control structures, riprap materials, and pollution control measures. Sealed bids must be submitted electronically through the Iowa Management of Procurement and Contracts System (IMPACS) by 3:00 PM on May 20, 2026, with public bid opening occurring simultaneously via Microsoft Teams. A pre-bid conference is scheduled for 10:00 AM on April 24, 2026, at the Calhoun County Conservation Board in Rockwell City, Iowa. All construction work except seeding must be completed by December 31, 2026, with structure seeding due by May 15, 2027, and buffer seeding by June 30, 2027. Successful bidders must commence construction within 14 days of the preconstruction meeting.
Bidders are required to submit a proposal guarantee (bid bond) equal to 10 percent of the base bid amount, with the successful contractor furnishing a Performance and Payment Bond equal to 100 percent of the contract price within fourteen days of the Notice-of-Award. Compensation is computed on a unit price basis, with monthly progress payments processed at 97 percent of completed work value, subject to a 3 percent retention. The estimated total construction cost for the North site ranges from $375,000 to $475,000, while the South site ranges from $175,000 to $275,000. Liquidated damages are assessed at $175.00 per day for all work except seeding and $125.00 per day for seeding activities. Construction materials purchased for the project are exempt from Iowa sales and use tax, with the Division providing tax exemption certificates to the contractor. No incumbent vendor or current contractor is identified. Bidders must submit written questions concerning plans and specifications to the Engineer of Record, Dan Jensen, P.E. of Shive-Hattery (djensen@shive-hattery.com), with copies to Tracy Blocker (tracy.Blocker@iowaagriculture.gov), with all inquiries required to be received by 3:00 PM on May 5, 2026, to be addressed in a final addendum.
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Other files
| File | Type | Posted |
|---|---|---|
| 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 | ||
| Notice to Bidders.pdf | ||
| Appendix I.pdf | ||
| Proposal & Affidavit - REVISED.pdf | ||
| QA QC Plan.pdf |
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Text version
CAL883229BN & CAL883229BS Nutrient Reduction Wetland Project DOCUMENT CC – Attachment 1 Bid No. 26-2 PROPOSAL AND SCHEDULE OF PRICES
SCHEDULE OF PRICES
CAL883229BN
Contract No. 26-2 Section 29, Township 88 North, Range 32 West, Calhoun County, Iowa
Name of Bidder:_____________________________________________________________________________
Item No.
Work or Material Spec No.
Est Qty
Unit Unit Price
Total
1 Site Stripping and Preparation CS-IA-001 1 LS
2 Crop Damage CS-IA-001 - - - -
3 Structure & Channel Seeding CS-IA-006 1.5 AC
4 Buffer Seeding CS-IA-006 15.1 AC
5 Mobilization & Demobilization CS-008 1 LS
6 Drain Tile Investigation & Removal CS-IA-009 2,270 LF
7 Excavation (General - P) CS-IA-021 6,176 CY
8 Earthfill (General - P) CS-IA-023 6,176 CY
9 Earthfill (General Dam - P) CS-IA-023 0 CY - -
10 Earthfill (Dam Core - P) CS-IA-023 0 CY - -
11 Earthfill (18"-Clay Liner Wetland Bottom, 2 lifts of 9" - P) CS-IA-023 9,841 CY
Earthfill (Scarify and Recompact 9" layer of wetland bottom- P)
CS-IA-023 4,494 CY
13 Topsoil Placement (6" layer - P) CS-IA-026 4,535 CY
14 Topsoil Placement (12" layer - P) CS-IA-026 0 CY - -
15 PVC Forcemain, 8" Schedule 80 CS-IA-045 92 LF
16 Perforated Polyethylene Pipe with porous backfill, 4" dam. CS-IA-046 279 LF
17 Non-perforated Polyethylene Pipe, 6" diam. CS-IA-046 187 LF
18 SDR 26 PVC, 24" diam. CS-IA-046 367 LF
19 Riser Inlet Structure, 24" CS-IA-051 1 EA
20 CMP Water Control Structure, 48" CS-IA-051 1 EA
21 Aluminized CMP, 18" diam, 14 GA CS-IA-051 177 LF
22 CMP Outlet Pipes, 8" x 20' CS-IA-051 2 EA
23 Riprap, Class E CS-IA-061 150 TN
24 Clean Stone, 1" CS-IA-061 150 TN
25 Clean Stone, 2" CS-IA-061 30 TN
26 Pollution Control, Silt Fence CS-IA-005 472 LF
27 Pollution Control, Type 2B RECP CS-IA-005 560 LF
28 Solar, Batter, Electrical & Control Division 26 2 EA
29 Pump Station Div 26 & 33 2 EA
30 Single Cantiliver Slide Gate Plan C304 1 LS
31 Chain link security fence Plan C304 215 LF
IMPACS will have only 30 bid items listed under group one.
SUB-TOTAL BASE BID….……………………………………………………………………………$________________
Cal883229BN-NORTH
Cal883229BS-SOUTH Contract No. 26-2 Section 29, Township 88 North, Range 32 West, Calhoun County, Iowa
Name of Bidder:
Item No.
Work or Material Spec No.
Est Qty
Unit Unit Price
Total
1 Site Stripping and Preparation CS-IA-001 1 LS
2 Crop Damage CS-IA-001 - - - -
3 Structure & Channel Seeding CS-IA-006 0.4 AC
4 Buffer Seeding CS-IA-006 0.6 AC
5 Mobilization & Demobilization CS-008 1 LS
6 Drain Tile Investigation & Removal CS-IA-009 65 LF
7 Excavation (General - P) CS-IA-021 1,056 CY
8 Earthfill (General - P) CS-IA-023 585 CY
9 Earthfill (General Dam - P) CS-IA-023 579 CY
10 Earthfill (Dam Core - P) CS-IA-023 191 CY
11 Earthfill (18"-Clay Liner Wetland Bottom, 2 lifts of 9" - P) CS-IA-023 2,046 CY
Earthfill (Scarify and Recompact 9" layer of wetland bottom- P)
CS-IA-023 4,607 CY
13 Topsoil Placement (6" layer - P) CS-IA-026 787 CY
14 Topsoil Placement (12" layer - P) CS-IA-026 433 CY
15 PVC Forcemain, 8" Schedule 80 CS-IA-045 27 LF
Perforated Polyethylene Pipe with porous backfill, 4" dam.
CS-IA-046 0 LF - -
17 Non-perforated Polyethylene Pipe, 6" diam. CS-IA-046 0 LF - -
18 SDR 26 PVC, 24" diam. CS-IA-046 210 LF
19 Riser Inlet Structure, 24" CS-IA-051 1 EA
20 CMP Water Control Structure, 48" CS-IA-051 1 EA
21 Aluminized CMP, 18" diam, 14 GA CS-IA-051 114 LF
22 CMP Outlet Pipes, 8" x 20' CS-IA-051 0 EA - -
23 Riprap, Class E CS-IA-061 150 TN
24 Clean Stone, 1" CS-IA-061 70 TN
25 Clean Stone, 2" CS-IA-061 30 TN
26 Pollution Control, Silt Fence CS-IA-005 304 LF
27 Pollution Control, Type 2B RECP CS-IA-005 395 LF
28 Solar, Batter, Electrical & Control Division 26 1 EA
29 Pump Station Div 26 & 33 1 EA
30 Single Cantiliver Slide Gate Plan C304 1 LS
31 Chain link security fence Plan C304 168 LF IMPACS will have only 30 bid items listed under group two.
SUB-TOTAL BASE BID….……………………………………………………………………………$________________
Cal883229BN-SOUTH
TOTAL BASE BID………… Cal883229BN-NORTH and Cal883229BS-SOUTH…………………$________________
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
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