Exhibit A - Prairie Rose Lake Site Plans and Figures.html
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- Attached to
- 26CRDLWBBDODD-0003 - Alum Applications at Three Mile Lake, Prairie Rose Lake, and Green Valley Lake
- Solicitation number
- 26CRDLWBBDODD-0003
- Issued by
- Iowa
About this file
This file is an Exhibit document prepared by the Iowa Department of Natural Resources containing site plans and figures for Prairie Rose Lake as part of a Request for Quote (RFQ) for alum applications at three priority lake restoration sites. The Iowa DNR issued RFQ 26CRDLWBBDODD-0003 on September 10, 2025, seeking qualified contractors to conduct aluminum sulfate and sodium aluminate treatments at Lake of Three Fires, Green Valley Lake, and Prairie Rose Lake to reduce phosphorus concentrations and mitigate internal phosphorus recycling. The project encompasses 92.8 acres across the three lakes, with Prairie Rose Lake requiring 3,494 gallons of alum and 1,747 gallons of sodium aluminate. Quotes were due on October 1, 2025, at 11:00 AM, with an anticipated contract execution date of November 13, 2025. The contract term runs from January 1, 2026, through December 31, 2026, with the possibility of one annual extension. Planned application periods include spring treatments from April 1–May 1, 2026, and fall treatments for Lake of Three Fires between September 8 and November 13, 2026.
Contractors are responsible for providing all equipment, chemicals, site access, staging, signage, and site restoration, with strict requirements for pH monitoring and daily record maintenance. Bidders must submit comprehensive documentation including contact details, contractor registration, years in business, technical experience, key personnel resumes, and three professional references. The project builds on research conducted by Iowa State University, the University of Wisconsin-Madison, and Barr Engineering identifying these lakes as optimal candidates for alum treatment. The Iowa DNR will allow a 60-day invoice payment period in accordance with Iowa Code, with payments in US Dollars. While specific budget ranges are not explicitly stated in the solicitation, the procurement involves substantial chemical applications across multiple lake areas as part of the broader Lake Restoration Program aimed at developing and implementing strategic phosphorus management techniques in Iowa's lake ecosystems. The solicitation does not explicitly outline specific set-aside designations or restrictions for disadvantaged enterprises.
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