Pre-Solicitation Notification For: Cedar Rapids Flood Risk Management Project, Reach 1, Cedar Lake South Railyard (Hoth)Floodwall W912EK26BA002

SOLICITATION IS FORTHCOMING AT A LATER DATE The work includes, but is not limited to: site demolition; temporary traffic control; clearing, grubbing, and stripping; trench excavation; filling and grading; sheet pile installation; embankment, H-pile concrete floodwalls, interior drainage; roadway grade raises; water main installation; site restoration; bedding stone and riprap placement. All contractor access by barge. NAICS Code: 237990 ESTIMATED RANGE: $10,000,000 to $25,000,000 COMPLETION DAYS: 700 Consecutive Calendar Days for BASE BID Total Small Business Set-ASIDE - Invitation for Bid

Amendment 00002 - The reason for this amendment is to update section 00 21 13 - Instructions to bidders to correct the weekday from "Monday" to "Thursday" for the closing date and BID Opening scheduled for Thursday, 11 June 2026. Amendment 00001 - The purpose of this amendment is to establish the closing date and time to Tuesday, 02 June 2026 @ 2:00PM CST for Bidder Inquiry Questions and Answers in ProjNet. ATTENTION Due to file sizes and SAM.gov limitations at the time of release, not all of the files that are needed are posted. The file: 1. Attachment J-2 Plan Set - VOL117 Railyard_Floodwall. Please email Jake Anderson and Ryan Larrison at the following emails and you will get a link to the file via DoD SAFE: jake.t.anderson@usace.army.mil ryan.r.larrison@usace.army.mil The U.S. Army Corps of Engineers, Rock Island District has a requirement for a construction contract for the project known as: CEDAR RAPIDS FLOOD RISK MANAGEMENT PROJECT, REACH 1, SOUTH RAILYARD FLOODWALL. The work includes, but is not limited to: Demolition; temporary traffic control; clearing and grubbing; metal sheet pile and steel H-pile installation; toe drain installation; floodwall construction; watermain modifications; storm sewer installation; riprap, bedding stone and aggregate surfacing placement; seeding and site restoration. All contractor access by barge. NAICS: 237990 Size Standard: $45,000,000.00 Estimated Range: Between $25,000,000.00 and $100,000,000.00 Total Small Business Set Aside, Invitation for Bids (IFB) Questions regarding this solicitation shall be submitted via ProjNet by 2:00 PM CST on 04 June 2026. See "Questions and Answers via ProjNet" within the instructions to Bidders Section of the solicitation document for additional information.

Amendment 00003 - Based on questions received via ProjNet, the reason for this amendment is to extend the closing date to end on 22 June 2026 at 10:00 AM CST, update the bid opening date and time to 22 June 2026 @ 1:00 PM CST; and to include Contract Specialist Stanley Bolton in section 00 21 13 - Instructions to Bidders as an additional Point for bid submissions and to provide the following updated documents: Updated Documents: -Attachment J-2 Plan Set Updated_AMND--2026-06-04-VOL117_0003 -Attachment J-3 Specifications Updated_AMD-2026-06-03 -Wage Rate Updated IA20260028 06/04/2026 Amendment 00002 - The reason for this amendment is to update section 00 21 13 - Instructions to bidders to correct the weekday from "Monday" to "Thursday" for the closing date and BID Opening scheduled for Thursday, 11 June 2026. Amendment 00001 - The purpose of this amendment is to establish the closing date and time to Tuesday, 02 June 2026 @ 2:00PM CST for Bidder Inquiry Questions and Answers in ProjNet. ATTENTION Due to file sizes and SAM.gov limitations at the time of release, not all of the files that are needed are posted. The file: 1. Attachment J-2 Plan Set - VOL117 Railyard_Floodwall. Please email Jake Anderson and Ryan Larrison at the following emails and you will get a link to the file via DoD SAFE: jake.t.anderson@usace.army.mil ryan.r.larrison@usace.army.mil The U.S. Army Corps of Engineers, Rock Island District has a requirement for a construction contract for the project known as: CEDAR RAPIDS FLOOD RISK MANAGEMENT PROJECT, REACH 1, SOUTH RAILYARD FLOODWALL. The work includes, but is not limited to: Demolition; temporary traffic control; clearing and grubbing; metal sheet pile and steel H-pile installation; toe drain installation; floodwall construction; watermain modifications; storm sewer installation; riprap, bedding stone and aggregate surfacing placement; seeding and site restoration. All contractor access by barge. NAICS: 237990 Size Standard: $45,000,000.00 Estimated Range: Between $25,000,000.00 and $100,000,000.00 Total Small Business Set Aside, Invitation for Bids (IFB) Questions regarding this solicitation shall be submitted via ProjNet by 2:00 PM CST on 04 June 2026. See "Questions and Answers via ProjNet" within the instructions to Bidders Section of the solicitation document for additional information.

Adding BID Summary Sheet to Attachments/Links Section - B01 - BID SUMMARY SHEET: 22 June 2026 @ 1:19PM CST Amendment 00003 - Based on questions received via ProjNet, the reason for this amendment is to extend the closing date to end on 22 June 2026 at 10:00 AM CST, update the bid opening date and time to 22 June 2026 @ 1:00 PM CST; and to include Contract Specialist Stanley Bolton in section 00 21 13 - Instructions to Bidders as an additional Point for bid submissions and to provide the following updated documents: Updated Documents: -Attachment J-2 Plan Set Updated_AMND--2026-06-04-VOL117_0003 -Attachment J-3 Specifications Updated_AMD-2026-06-03 -Wage Rate Updated IA20260028 06/04/2026 Amendment 00002 - The reason for this amendment is to update section 00 21 13 - Instructions to bidders to correct the weekday from "Monday" to "Thursday" for the closing date and BID Opening scheduled for Thursday, 11 June 2026. Amendment 00001 - The purpose of this amendment is to establish the closing date and time to Tuesday, 02 June 2026 @ 2:00PM CST for Bidder Inquiry Questions and Answers in ProjNet. ATTENTION Due to file sizes and SAM.gov limitations at the time of release, not all of the files that are needed are posted. The file: 1. Attachment J-2 Plan Set - VOL117 Railyard_Floodwall. Please email Jake Anderson and Ryan Larrison at the following emails and you will get a link to the file via DoD SAFE: jake.t.anderson@usace.army.mil ryan.r.larrison@usace.army.mil The U.S. Army Corps of Engineers, Rock Island District has a requirement for a construction contract for the project known as: CEDAR RAPIDS FLOOD RISK MANAGEMENT PROJECT, REACH 1, SOUTH RAILYARD FLOODWALL. The work includes, but is not limited to: Demolition; temporary traffic control; clearing and grubbing; metal sheet pile and steel H-pile installation; toe drain installation; floodwall construction; watermain modifications; storm sewer installation; riprap, bedding stone and aggregate surfacing placement; seeding and site restoration. All contractor access by barge. NAICS: 237990 Size Standard: $45,000,000.00 Estimated Range: Between $25,000,000.00 and $100,000,000.00 Total Small Business Set Aside, Invitation for Bids (IFB) Questions regarding this solicitation shall be submitted via ProjNet by 2:00 PM CST on 04 June 2026. See "Questions and Answers via ProjNet" within the instructions to Bidders Section of the solicitation document for additional information.