Thomas Mitchell Stream Restoration Project

Polk County, Iowa, through its Public Works department, is seeking a qualified contractor for the Thomas Mitchell Stream Restoration Project, located in Eastern Polk County within Milton City. The procurement involves a comprehensive stream restoration initiative targeting approximately 3,500 linear feet of stream within Thomas Mitchell Park, with project objectives focused on stream stabilization and environmental restoration. Key deliverables include complex environmental engineering techniques such as fabric-encapsulated soil lifts, toe wood placement, rock riffles, geotextile fabric installation, and specialized seeding methods for riparian and prairie environments. The project is scheduled to commence on July 10th, 2025, with a firm completion deadline of October 31st, 2025. Bid submissions are due by 2:00 PM CST on June 12th, 2025, with an anticipated contract award date of July 1st, 2025. Contractors must demonstrate technical expertise in stream restoration, provide comprehensive documentation including manufacturer certifications and installation instructions, and comply with detailed technical specifications outlined in the project documents. Evaluation will focus on responsiveness, technical capability, and being the lowest responsible bidder.

The procurement does not explicitly designate specific set-aside requirements for disadvantaged enterprises, though the bid book emphasizes local and state preferences for Iowa-based products and labor. Potential bidders must provide a 5% bid security and meet comprehensive insurance requirements, including Workers' Compensation, Commercial General Liability ($1,000,000 per occurrence), and Automobile Liability ($1,000,000 combined single limit). The engineer's estimated project budget is $1,285,515, with the contract structured around 37 line items covering activities such as mobilization, clearing, survey and staking, water handling, erosion control, hydraulic seeding, and riprap installation. Contractors will be subject to liquidated damages of $1,000 per day for uncompleted work and must submit performance, payment, and maintenance bonds. The procurement requires contractors to have authorization to transact business in Iowa, with specific documentation needed to demonstrate business standing and operational history. Polk County Conservation will provide certain seed mixes at no cost to the selected contractor, further supporting the project's environmental restoration goals.