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Cyphers Logistic Park AUAR 35 March 2022 The existing wa ter system was analyzed for supply, treatment, storage, and distribution capacity to determine if additional water system capital improvements are necessary to continue to provide a safe and reliable water supply through 2040 in the Comprehensive Plan. It was determined that as the City grows , the Comprehensive Plan assumes an additional 2-3 wells will be required and that the existing water tower storage capacity of Towers 2 and 4 equate to 1,750,000 gallons. In addition, the City is currently designing and constructing Water Tower No. 3 to add another 1,000,000 gallons of elevated storage capacity to the overall system. With the completion of Water Tower No. 3, anticipated in the Fall of 2023, the storage capacity will be sufficient to serve the demands projected in the Comprehensive Plan beyond 2040. The Minnesota DNR recommends that the total storage be equal or exceed the average daily demand. The Water Supply Plan adopted as part of the Comprehensive Plan did not plan for development of the AUAR s tudy area with urban densities; however, it did plan to serve the AUAR study area with municipal water given the known PFAS groundwater contamination in the area. Based on the expected population growth of Lake Elmo per the 2040 Comprehensive Plan and the May 2021 Comprehensive Plan Amendment, the projected average daily demand will be 2,100,000 gallo ns per day. While the projected density and intensity is higher than planned, the City’s planned improvements to the water supply, including additional wells and storage capacity, is sized adequately to serve the increased demand based on higher intensity and density in the area. vi. Surface Waters 1) Wetlands – D escribe any anticipated physical effects or alterations to wetland features, such as draining, filling, permanent inundation, dredging, and vegetative removal. Discuss direct and indirect environmental effects from physical modification of wetlands, including the anticipated effects that any proposed wetland alterations may have to the host watershed. Identify measures to avoid (e.g., available alternatives that were considered), minimize, or mitigate environmental effects to wetlands. Discuss whether any required compensatory wetland mitigation for unavoidable wetland impacts will occur in the same minor or major watershed and identify those probable locations. Scenario s 1, 2, 3, and 4 Approximately 5.2 acres of wetlands are located within the AUAR s tudy area based on National Wetlands Inventory data from the DNR (See Table 7). If any wetland impacts are proposed as part of future development within the AUAR s tudy area, the applicable WCA and/or U.S. Army Corps of Engineers approvals will need to be obtained . Table 7 : Wetlands Identified on Site Identifying Inventory Wetland Type Wetland Classification Identified Wetland Size National Wetlands Inventory Freshwater Emergent Wetland PEM1A 0.44 acres Freshwater Emergent Wetland PEM1C 1.6 acres