Agenda - Council - 09/26/2023 - Laserfiche WebLink

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water system. The existing groundwater wells draw water from 7 municipal wells ranging from 120 to 213 feet deep that draw water from the Tunnel City, Tunnel City - Eau Claire, and Tunnel City-Wonewoc aquifers. Water mains to service the site area provided within adjacent roadway right-of-way, and a preliminary review indicates that the existing infrastructure is sufficient for the anticipated development. For the proposed development, the estimated demand needed to support the new development is 146,864 gallons per day (based on the proposed 498 units, along with the existing church, yielded a total of 536 MCES SAC units for the proposed development). Assuming 2-acres or irrigated landscape will require 1-inch of water per week will require approximately 7,760-GPD. Using native plants and perennials for landscaping and stormwater features will absorb water and reduce the water demand for irrigation. Based upon the estimated demand, the existing city water supply is capable of handling the new development. Water appropriation for new wells or an increase in authorized volume is not anticipated for the project as the city's current system can accommodate the development. iv. Surface Waters 1) Wetlands — Describe 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, taking into consideration how current Minnesota climate trends and anticipated climate change in the general location of the project may influence the effects. 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. The City of Ramsey requires a 16.5-foot buffer around all wetlands and stormwater ponds. The wetlands must be protected from disturbance and erosion during the construction process. Post construction, certain activities shall be prohibited within 16.5 feet of the wetland edge. The freshwater emergent wetlands on the site will be avoided, maintaining the existing function and value of the wetlands. If designs would change to impact wetlands, any wetland impacted would require Minnesota Wetland Conservation Act (WCA) approval with the City of Ramsey as the WCA LGU, and an US Army Corps of Engineers (USACE) Section 404 of the Clean Water Act permit. Wetland impacts would be mitigated based on current rules and requirements from the City and USACE. 2) Other surface waters — Describe any anticipated physical effects or alterations to surface water features (lakes, streams, ponds, intermittent Haviland Fields EAW 16 September 2023