Proposed Bak Stabilization Tennessee River, River Mile 466.2 - 466.5 Hamilton County, Tennessee.

摘要

1. The U.S. Army Corps of Engineers has proposed a project to protect important infrastructure, alleviate stream bank erosion, and safeguard important cultural resources along Tennessee River Mile 466, within the City of Chattanooga. The proposed project is authorized under Section 14 of the Flood Control Act (FCA) of 1946 (Public Law 79-526) as amended. Work performed under Section 14 of the FCA. corrects bank and shore erosion that endangers public or non-profit facilities. 2. Alternatives considered in the environmental assessment (EA) for the proposed Section 14 Emergency Streambank Protection arc: No Action, bank stabilization by sloping of bank with riprap. full bank build-out (no sloping of bank) with riprap, combination of bioengineering and riprap. gabion baskets, and relocation of the existing util utilities. Due to various issues and concerns. only alternatives l and 3 (No Action and Full Bank Build-Out) were carried through and discussed in detail in the EA. Full bank build-out using riprap is considered the most cost-efficient and effective means to address current bank stabilization issues. and is considered the preferred alternative. The No Action alternative would not be in the public's best interest and would eventually impact city infrastructure and historical resources. thus requiring more costly meru1s to address the issue. 3. In accordance with ER 200-2-2, Policy and Procedures for implementing the National Environmental Policy Act (NEPA). an EA has been prepared and circulated to otl1er agencies and groups for review. Coordination with the Tennessee State Historic Preservation Officer (SHPO) and federally recognized tribes were conducted. The proposed work would create a beneficial socioeconomic impact by providing protection to public lands and facilities. Benefits are realized with water quality and aquatic habitat with the halting of erosion and sedimentation.