Summary
The Iowa Department of Natural Resources is soliciting bids to remove loose and potentially unstable bedrock fragments and talus around the Harmon Tunnel portal highwalls at Pammel State Park; work must be completed by November 30, 2026 and blasting is prohibited. Bids must be submitted electronically per the General Information and Instructions to Bidders, and the contractor must demonstrate experience with at least three similar projects in the past five years with personnel having minimum two years full-time experience in rock slope stabilization. The project duration is listed as 168 days and the estimated budget range on the aggregator was $200,000–$500,000 (aggregator estimate only).