Adventureland Aquatic Center Proposed Pool Discharge

Adventureland Aquatic Center Proposed Pool Discharge December 9, 2025 Notice is hereby given that the Adventureland Aquatic Center in Altoona, Iowa has completed a draft antidegradation alternatives analysis for discharge of treated wastewater to an unnamed creek tributary to the Des Moines River. The action being considered is construction of an engineered holding pond for treatment of pool water prior to discharge at Outfall 001. The pond will be designed to hold water for the time required to achieve physical and chemical treatment. Anyone wishing to comment on the proposed treatment alternatives must do so in writing within 30 days of the date shown at the top of this notice. Comments may be submitted electronically by completing the Microsoft form using the following link: https://forms.office.com/r/vEMdnQa8QE Alternatively, comments may be mailed to Terracon Consultant's Des Moines Office at 600 Southwest 7th Street, Suite M, Des Moines, Iowa 50309. Copies of this notice and the draft antidegradation alternatives analysis are available at the Altoona Public Library located at 700 8th St SW, Altoona, IA 50009 and at the Altoona Post Office located at 300 8th St SE, Altoona, IA 50009. Electronic copies may be requested by contacting Terracon's Nate Yencer at nate.yencer@terracon.com. Adventureland will submit a summary of comments received and Adventureland's responses to the Iowa Department of Natural Resources (IDNR) with the final alternatives analysis subject to IDNR review and approval. December 17 2025 LIOW0420420