Additional Sediment/Soil Sampling Conducted at the Little Sioux Bend Shallow Water Habitat Project Site during October 2013
Abstract
The U.S. Army Corps of Engineers (USACE) is proposing a project to construct shallow-water habitat (SWH) along the Little Sioux Bend of the Missouri River between RM666 and RM669. The construction of SWH will enhance the aquatic habitat of the Missouri River and benefit the endangered pallid sturgeon (Scaphirhynchus albus) population. Although on the Nebraska side of the Missouri River, the project area is located in Harrison County, Iowa and Burt County, Nebraska and will basically run down the old river channel that is the legal boundary between the States of Iowa and Nebraska. The USACE is proposing to use hydraulic dredging to excavate sediment/soil from the old river channel and discharge the dredge spoil to the Missouri River adjacent to the proposed project area. Section 404 of the Federal Clean Water Act (CWA) requires that a 404 permit be appropriately obtained prior to the discharge of any dredge or fill material into waters of the United States. Under 401 of the Federal CWA an applicant for a federal license or permit (i.e. 404 permit) must obtain a certification that the discharge and activity is consistent with appropriate State or Tribal water quality regulations. Regarding the Little Sioux project, a 401 water quality certification has been requested from the Iowa Department of Natural Resources (IDNR) and Nebraska Department of Environmental Quality (NDEQ) regarding compliance with State water quality standards and implementation plans. The Water Quality Sampling Report and Factual Determinations, Results of Sediment Sampling and Elutriate Testing at the Proposed Little Sioux Bend Shallow Water Habitat Project Site (USACE, April 2013) was previously prepared to support Section 404 permitting and State 401certification considerations at the proposed Little Sioux project.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 2013
- Accession Number
- ADA617494
Entities
Organizations
- Omaha District, U.S. Army Corps of Engineers