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that the material can be reused without restrictions. The contractor is responsible for disposing of the excavated material in accordance with the guidelines outline in “Managed Dredged Materials in the State of Minnesota” published by the Minnesota Pollution Control Agency in October 2007, as well as any city ordinances. Excavated material will not be placed within a wetland. 6. Minnesota Pollution Control Agency Comment 1: If a USACE Section 404 Individual Permit is required for any project activity, then an MPCA CWA Section 401 Water Quality Certification or waiver must also be obtained. Response 1: If an Individual Permit is required, the Section 401 Certification will be acquired as to comply with the state water quality standards, and all conditions will be incorporated into the USACE 404 permit. Comment 2: A discussion of the best management practices to be used during the dredging is needed. Also, management of the dredge material needs further explanation and detail; especially if there will be return water from the dredge material. Response 2: The best management practices to be used during the project are outlined in the SWPPP and will be a part of the final construction documents. Below are some of the BMPs that will be utilized: • Dewatering or basin draining is required for this project. When dewatering or basin draining is required, the contractor shall submit a dewatering plan and narrative to the project engineer for approval prior to undertaking these activities. The dewatering plan must include BMP’s to prevent sediment transport, erosion, and adverse impacts to downstream receiving waters. The dewatering plan must also include any specific chemical treatments (floc, polymers, etc.) that will be used. The dewatering plan and DNR appropriations permit will become part of the SWPPP. • The operator is responsible for the installation, operation, and continued maintenance of appropriate best management practices during the excavation process. All temporary or permanent stabilization will occur as soon as possible within 14 days after ceasing construction activity. Frozen bare soils will be stabilized with Type 3 mulch, and sloped areas of 3:1 or greater and high priority areas will be stabilized with erosion control blanket and seed/fertilizer mix. Disturbed areas of construction that are not completed during winter will be temporarily stabilized with Type 1 mulch. Details of the BMPs to be used during construction are outlined in the project Storm Water Pollution Prevention Plan (SWPPP). 43