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Final Supplemental Environmental Assessment

Nolichuckey Sand Company
Bird Bridge Dredge

Request for expansion of its existing sand dredging operation between Nolichucky River Miles 49.0 and 51.0 (Davy Crockett Reservoir), Greene County, Tennessee

TVA appreciates your interest in the final Supplemental Environmental Assessment for the Nolichuckey Sand Company Inc. (NSC) Bird Bridge Dredge. During the summer of 1999, the general public, state and federal officials, and various special interest groups were invited to participate in the public scoping for the original project. Comments received were considered in the decision to authorize the dredge operation between Nolichucky River (Davy Crockett Reservoir) miles 49.0 and 50.1.

TVA, the U.S. Army Corps of Engineers (USACE), and the Tennessee Department of Environment and Conservation authorized the original project following the completion of an EA in August 1999. In June 2003, NSC, now owned by Vulcan Materials Inc., proposed to expand its existing commercial sand dredging operation upstream for nearly an additional mile above Bird Bridge. To resolve state water quality violations by the previous owner, NSC agreed to construct an onsite sediment treatment basin prior to dredging in the expansion area. TVA and USACE jointly prepared this SEA to analyze the environmental impacts of the additional dredging and the renewal of land use, Section 26a, and Section 10 permit approvals issued in September 1999.

NSC has a Section 26a permit for its current operations. NSC sought approval to continue the use of a graded and graveled ramp for the launch and retrieval of its barge, along with approval for piping and flotation for support of its suction line to the separation plant and the submerged return (effluent) water discharge pipe from the plant via a new detention sediment basin. In addition, NSC sought approval of this existing water discharge pipe in its permit. NSC now owns or leases a total of 5.6 acres of yard area, and its activities requiring land use authorization, including additional reservoir-bottom dredging, would affect portions of several tracts of TVA land.

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Impact avoidance and/or mitigation measures included in the 1999 EA will be included as conditions of approval. To avoid compromising the structural integrity of the bridge and its foundation, NSC has agreed that no sand dredging will occur within 500 feet upstream or 500 feet downstream of Bird Bridge. From the standpoint of flood control, NSC agrees that stockpiled sand will be stored and contained on land above the 100-year floodplain (1,269.1-foot contour). Dredged debris and material periodically removed from the sediment basin will be disposed of above the Nolichucky River 500-year floodplain (elevation 1,275 foot mean sea level). Any future development proposed within the limits of the 100-year floodplain will be consistent with the requirements of Executive Order 11988.

Based on analysis in this FONSI, conclusions and commitments incorporated by reference in the previously completed EA, and TVA’s site inspection and detailed review of NSC’s development and operational plans, including the development and operation of an onsite sediment control basin, TVA concludes that continued and expanded sand dredging of the Nolichucky Reservoir between NRM 49.0 and 51.0 would not be a major federal action significantly affecting the quality of the environment.

See the analyses in the FSEA and TVA FONSI that describe the environmental resources, effects, and commitments associated with the newly authorized operation.

Documents

The entire final supplemental environmental assessment, including attachments, can be viewed by section, as noted below (PDF files, require Adobe Acrobat Reader):

Finding of No Significant Impact (180 kb)

Final Supplemental Environmental Assessment (132 kb)
Includes proposed action and need, background, other environmental reviews, alternatives, impacts assessment, mitigation, public and intergovernmental review, conclusions and literature cited.

Attachment 1

Attachment 2 (1.1 Mb)
Corps/TVA Joint Public Notice and TDEC Public Notices

Attachment 3 (408 kb)
Responses to Public Notices

Attachment 4 (7.2 Mb)
TDEC ARAP and NPDES Permits

For more information

Printed copies of the Nolichuckey Sand Company Bird Bridge Dredge Final Supplemental Environmental Assessment are available upon request. For more information or a copy of the document, contact:

Write Stanford E. Davis, Tennessee Valley Authority, 400 W. Summit Hill Dr. WT 8C, Knoxville, TN 37902, or call him at 865-632-2915. Comments or questions may also be sent via e-mail to tvainfo@tva.gov (Attn: Stanford E. Davis).

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