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cityofardenhills.org • Dec. 2025 • 1 <br />Round Lake, the 120-acre lake located near the <br />intersection of Hwy 96 and Hwy 10, was contaminated <br />by stormwater runoff from the former Twin <br />Cities Army Ammunition Plant (TCAAP) site. The <br />contaminants, such as polychlorinated biphenyls <br />(PCBs) and heavy metals, are contained within the <br />lake’s sediment. The U.S. Army has an approved action <br />plan to remediate the contamination, which includes <br />dredging several areas of the lake. <br />Dredged material will be controlled on the north end <br />of Round Lake and transported to Ramsey County <br />property at Rice Creek Commons via pipelines routed <br />inside the storm sewer system for proper handling and <br />treatment. <br />Last year, the pre-design investigation indicated a <br />greater amount of sediment in the targeted removal <br />areas than anticipated. Because no additional funding <br />or contract time is available, the Army will proceed <br />with the originally scoped volume and address the <br />remaining material in a future contract. <br />Remediation work will take place over two <br />construction seasons, beginning in mid-2026 and <br />continuing through 2027. <br />The Official City Newsletter of Arden Hills December 2025 <br />Partner with Arden Hills Parks and Recreation <br />Round Lake Remedial Action <br />Looking for new ways to reach new customers? The City of Arden Hills Parks and Recreation <br />Department offers sponsorship opportunities that help businesses connect with the greater <br />community while supporting local events and programs. Arden Hills offers a variety of <br />seasonal programs and community activities throughout the year. <br />Partnerships are available year-round and can be tailored to fit your marketing goals <br />and budget. As a sponsor, your business will gain visibility, build brand recognition and <br />strengthen its connection with residents across Arden Hills and neighboring communities. <br />Be part of creating memorable community experiences and educational opportunities <br />while showcasing your business to thousands of potential customers. Sponsorships <br />are available for many programs and events, offering meaningful ways to support and <br />connect the community every day. Learn more at cityofardenhills.org/Sponsorship. <br />Political candidates and political organizations may not sponsor or reserve vendor space at City of Arden Hills events.