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December 4, 2025 Athanasia Lewis Page 2 of 2 Reference: Centerville and Lino Lakes Water Supply Interconnects the acceptable fire flows are and then determine if those levels can be reached. It is highly recommended that fire flow tests be completed in the warmer months due to the volume of water the tests generate, and the need to safely dispose of the water so it doesn’t freeze within roadways and pedestrian routes. Resident Notifications: The City of Lino Lakes indicated that Centerville would need to provide notification to residents of the Watermark development prior to providing water, and respond to any resident concerns. Centerville staff should weigh in on the capacity to meet these requirements. Modeling: to meet the many of the provisions outlined in the Lino Lakes memo, Centerville would need to update and further analyze its existing water system model. It appears that the model was last updated in roughly 2014, and would need to be updated to reflect the current water system and any new development or redevelopment. The cost to update the model could exceed $10,000 and take several weeks to complete. Future Considerations: In discussions with staff, there was no real-time notification that Centerville’s water system was pulling water from Lino Lakes through the interconnect, and it went undetected for a significant period of time. The City of Centerville should consider seeking a long-term solution in conjunction with the City of Lino Lakes such that the interconnects are able to be monitored in real-time by both communities and so that future situations where water is unknowingly passed through the interconnects can be prevented or addressed immediately. Regards, Stantec Consulting Services Inc. Kellie Schlegel, PE City Engineer Phone: (612) 712-2125 kellie.schlegel@stantec.com Attachments: Technical Memorandum from City of Lino Lakes; Interconnect Agreement 23