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Title: Environmental Assessment : City of Chattanooga, Tennessee, Section 14, Emergency Stream Bank Protection Project
Authors: United States. Army. Corps of Engineers. Nashville District.
Keywords: Chattanooga (Tenn.)
Tennessee River
Shore protection
Environmental protection
Environmental management
Publisher: United States. Army. Corps of Engineers. Nashville District.
Abstract: Bank stabilization is needed along a portion of the right descending bank of the Tennessee River between approximate river miles 466.2 - 466.5, within Nickajack Reservoir, Hamilton County, Tennessee. This section of the riverbank borders the Chattanooga Golf and Country Club. The country club is privately owned, but the City of Chattanooga has a sewer easement for the existing utilities. Any additional land easements or purchases would be made prior to construction. Bank erosion is endangering approximately 1,100 feet of a 42-inch concrete gravity sanitary main, two manholes, and a 30-inch iron sanitary sewer force main. The proposal involves stabilization of the approximate 1,100 feet of riverbank to protect city infrastructure and to prevent further deterioration at this location. The project is also located between two previous Corps’ bank stabilization projects. Upstream of the eroding section is the Chattanooga Interceptor Sewer Line project constructed in 1998 and downstream is the Chattanooga Sewer Line project constructed in 1994. The proposed riverbank stabilization project would serve to protect important public infrastructure while preventing further erosion and possibly more costly repairs or replacement of existing infrastructure. Bank protection would provide some environmental benefit by reducing further sediment loss into the river while providing additional habitat for aquatic species within and along the river. Additional habitat provided would be from the interstitial spacing (spacing between rocks). Aquatic species that would benefit from additional habitat include macroinvertebrates (i.e., snails, mussels, and crayfish) and young of the year fish while spacing above water would provide habitat for turtles, snakes, frog, and salamanders. Bank protection would also alleviate potential water quality concerns from ruptured sewer lines.
Description: Environmental Assessment and Finding of No Significant Impact
Rights: Approved for Public Release; Distribution is Unlimited
Appears in Collections:Environmental Documents

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