Mohave Rattlesnake Detention Basin Construction Phase 3

Mohave County Flood Control District is requesting bids for construction of Phase 3 of the Mohave-Rattlesnake Detention Basin project north of Kingman, Arizona, with bids due August 25, 2026 at 2:00 p.m., a pre-bid conference scheduled August 10, 2026 at 8:30 a.m., and a site walk to follow.

The scope includes excavation and embankment construction of one detention basin on 100 acres of Flood Control District land, with work encompassing clearing and grubbing, riprap installation with filter fabric, grouted riprap, concrete structures (headwalls, cut-off walls, ford crossings, and slabs), a sediment gage, and earthwork excavation of approximately 48,830 cubic yards. The basin is the fifth of a five-basin series designed to infiltrate up to 144 acre-feet of stormwater and provide flood control benefits to the City of Kingman Wastewater Treatment Plant and contribute to aquifer recharge through infiltration.

The anticipated contract price range is $1,000,000 to $5,000,000. Contract completion is required within 180 calendar days from Notice to Proceed. Bids are due via the County's online bidding system.

Each bid must be accompanied by a bid bond, cashier's check, or certified check equal to ten percent of the bid amount, payable to the Mohave County Treasurer. Surety bonds must be executed by a company rated FSC VIII A- or better per A.M. Best Company's Key Guide. The successful bidder must provide performance and payment bonds and maintain comprehensive general liability insurance with limits of $1,000,000 per occurrence and $2,000,000 general aggregate, commercial automobile liability coverage with a combined single limit of $1,000,000, and workers' compensation insurance at statutory limits with employer's liability of $1,000,000. All insurance policies must name Mohave County as an additional insured with waiver of subrogation endorsements. Liquidated damages are $1,190 per calendar day of delay. Offers remain valid for 90 days following the bid due date. Payment discounts of 21 calendar days or more will be deducted from the proposed price. Dirt spoils may remain at the spoil area indefinitely without removal requirement. The Procurement Officer is Shelli Whaley, (928) 753-0752 Ext: 3, whales@mohave.gov.