Accession Number : ADA619587


Title :   Environmental Assessment: PL 84-99 Levee Rahabilitation Program Lower Platte South Natural Resource District Salt Creek, Lincoln, Lancaster County, Nebraska


Corporate Author : CORPS OF ENGINEERS OMAHA NE


Personal Author(s) : Vandenberg, Matthew ; Barnum, Sandra


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a619587.pdf


Report Date : Mar 2015


Pagination or Media Count : 48


Abstract : In accordance with the National Environmental Policy Act and implementing regulations, an Environmental Assessment (EA) has been prepared to evaluate the effects of the proposed Levee Rehabilitation Project along Salt Creek, Lincoln, Lancaster County, Nebraska. The EA was prepared to determine if the proposed scope of work and associated impacts would result in any significant impacts to the human environment. The proposed project consists of reshaping the levee banks back to a 3:1 slope and replacing lost bank material with compacted, non-dispersive clay and riprap; constructing landward piggy-back levees at discrete locations if space is available; installing sheet pile cutoff walls, replacing lost sod, and filling sink holes along portions of the right and left descending banks. Three alternatives were considered: two Build Alternatives and the No Action Alternative. Under the Preferred Action (Structural Repairs Alternative 3), the necessary rehabilitation to the Lower Platte South Natural Resource District s Flood Control Works will be preformed and the levees will be returned to pre-disaster conditions in order to provide flood damage reduction. The No Action Alternative was considered and not selected because it would not meet the projects purpose and need, which is to repair the flood control works to pre-disaster condition in order to provide flood damage reduction. Alternative 2 (Nonstructural Repairs) was not selected because under the PL 84-99 Program, this alternative must be requested by the project Sponsor. On October 22, 2014, the project Sponsor sent a letter to the USACE s Natural Disaster Program Manager stating that they do not wish to pursue the option of a Nonstructural Alternative. The environmental consequences of the proposed action on the physical, biological, and cultural resources have been evaluated.


Descriptors :   *ENVIRONMENTAL ASSESSMENT , *LEVEES , AIR QUALITY , AQUATIC ANIMALS , CLIMATE , CULTURAL RESOURCES , ECONOMICS , ENDANGERED SPECIES , FLOOD CONTROL , GEOLOGY , NOISE , RECREATION , REHABILITATION , REPAIR , VEGETATION , WATER QUALITY , WETLANDS


Subject Categories : Civil Engineering
      Environmental Health and Safety


Distribution Statement : APPROVED FOR PUBLIC RELEASE