27CRDLWBMBALM-0001 - Alum Applications at Casey Lake (Tama Co.) *REBID*

The Iowa Department of Natural Resources seeks a qualified contractor to perform an alum (aluminum sulfate) and sodium aluminate treatment of Casey Lake in Hickory Hills Park, Tama County, to inactivate phosphorus, reduce algal blooms, and improve water quality. The work includes mobilization/demobilization of equipment, delivery and application of specified chemical volumes, on‑site storage, environmental monitoring, and post‑treatment reporting. The contract is a re‑bid (REBID) with a base period from November 1 2026 to July 31 2027, and the field‑work window is April 1 – May 15 2027, with all dosing to be completed within seven calendar days after start. • Supply and apply 23,845 gal of liquid aluminum sulfate and 11,923 gal of liquid sodium aluminate using a GPS‑linked dosing system. • Provide mobilization/demobilization services, staging facilities, and required signage/buoys; restore all disturbed areas after work. • Deliver daily GPS‑tracked dosing data, chemical lot certifications, jar‑test results, and comprehensive daily logs; comply with AWWA B403‑88 and B405‑06 specifications and DNR environmental requirements.