Agenda - Council - 04/13/2021 - Laserfiche WebLink

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Riverstone South EAW January 2021 iv. Surface Waters a) 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. 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 identi those probable locations. As discussed under Item 11.a.i., the project area does not include any surface waters, wetlands, streams, or channels. Wetlands and waters near the project area are generally regulated by the Lower Rum River Watershed Management Organization (LRRWMO), which administers the Minnesota Wetland Conservation Act (WCA) in the project area; the U.S. Army Corps of Engineers (USAGE), which administers Section 404 of the Federal Clean Water Act (CWA); and the MPCA, which administers Minnesota water quality standards and Section 401 of CWA. The project will not involve physical effects on or alterations of any surface waters, wetlands, streams, or channels. b) Other Surface Waters. Describe any anticipated physical effects or alterations to surface water features (lakes, streams, ponds, intermittent channels, county/judicial ditches) such as draining, filling, permanent inundation, dredging, diking, stream diversion, impoundment, aquatic plant removal and riparian alteration. Discuss direct and indirect environmental effects from physical modification of water features. Identify measures to avoid, minimize, or mitigate environmental effects to surface water features, including in -water Best Management Practices that are proposed to avoid or minimize turbidity/sedimentation while physically altering the water features. Discuss how the project will change the number or type of watercraft on any water body, including current and projected watercraft usage. The proposed project is not expected to affect other surface water features such as lakes, streams, ponds, intermittent channels, or county/judicial ditches. The Mississippi River is located 650 to 780 feet southwest of the site. The project will not have physical effects on the Mississippi River, will not directly affect the number of watercraft on the river, and will treat stormwater runoff prior to discharge to the river. 18