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Short-term temporary construction dewatering of surface or ground waters may be required at the time of construction (depending on current field conditions) to facilitate construction activities (e.g., utility installation, etc.). If dewatering is anticipated to exceed 10,000 gallons per day or 1,000,000 gallons per year, the contractor will be required to obtain a Water Appropriations Permit from the Department of Natural Resources (MDNR) Division of Waters prior to initiating such activities. Measures to avoid, minimize, or mitigate the environmental effects from construction related to dewatering are unknown at this time, and therefore will be determined when developing the dewatering plan as required by a Stormwater Pollution Prevention Plan amendment of the NPDES Construction Stormwater Permit. wetlands 12 wetland areas, totaling approximately 71 acres, were delineated on the main Project site and approved by the Local Government Unit (City of Elk River) of the Minnesota Wetland Conservation Act (Minnesota Rules 8420). A Notice of Decision was issued on November 10, 2021 (LGU Project No. W-21-21). Approximately 18 acres of the current wetland area on site consists of land that had previously been mined as part of a gravel pit. These areas would meet the definition of an "incidental wetland" under Minnesota Administrative Rule 8420.0105 and therefore are not regulated under the Minnesota Wetland Conservation Act. Additionally, portions of these areas have depths up to approximately 20'. As a result, these areas function more as deep -water habitats rather than wetlands. Wetland impacts were avoided to the extent possible during the preliminary design phase of the overall site plan (Exhibit A). The final design will attempt to avoid and/or minimize impacts to the extent possible. Should unavoidable impacts remain, the proper permitting processes will be followed in accordance with the WCA and/or Section 404 of the Clean Water Act as applicable. This process would involve applying for a replacement plan potentially requiring compensatory mitigation. The area of wetland impact and jurisdictional status of the wetlands will be determined by the proper governmental agency during the permitting process following conclusion of the environmental review process. Other Surfs cc W/a tens No other surface water features (lakes, streams, intermittent channels, or county/jurisdictional ditches) will be physically or indirectly altered during the construction or operation of the proposed project. The only water feature located on the project site is the DNR Public Waters watercourse Trott Brook which meanders in and out of the project site along its western and southern boundaries. Trott Brook was avoided during the preliminary design phase of the overall site plan (Exhibit A). Temporary erosion and sediment control best management practices (BMPs) will initially be installed (per the project's SWPPP), maintained/repaired, and amended throughout the construction phases to avoid indirect impacts to Trott Brook. BMPs may include (but are not limited to) silt fence, bio-rolls/filter logs, rock construction entrances, mulch/hydro mulch, and permanent native seeding or turf seeding in appropriate areas. Following construction, permanent constructed stormwater treatment infrastructure (e.g. infiltration basins, �1