Sonar One Herbicide

The State of Illinois Office of Resource Conservation awarded a contract to Opterra Solutions, Inc. for the procurement of SonarOne herbicide, an aquatic vegetation control product manufactured by SePRO Corporation. The contract, designated 26-422DNR-DIREC-P-97991, was issued on June 16, 2026, with a completion date of August 1, 2026. The total contract amount is $30,376.00. The procurement consists of forty 20-pound containers of SonarOne dry pellets (800 pounds total) at a unit price of $37.97 per pound, with shipping costs included and delivered to a destination to be specified by the State. Opterra was selected as the prime contractor following a competitive sealed bid process in which four vendors submitted identical low bids; Opterra prevailed through a coin toss tie-breaking procedure conducted on June 5, 2026.

SonarOne is a pelleted aquatic herbicide containing 5% fluridone active ingredient, registered with the U.S. Environmental Protection Agency, and designed for management of submersed plants, floating plants, and shoreline grasses in fresh water environments including ponds, lakes, reservoirs, and irrigation systems. The product operates as a selective systemic herbicide with application rates restricted to specified parts per billion concentrations depending on water body type and proximity to potable water intakes. The contract is governed by the State of Illinois Chief Procurement Office Standard Terms and Conditions and includes applicable federal compliance requirements under the Great Lakes Restoration Federal Assistance Program administered by the U.S. Fish and Wildlife Service.