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Title: Program plan for TNX Area groundwater characterization wells

Abstract

The TNX Area post-Cretaceous hydrogeological section consists of an unconfined aquifer in recent to Pliestocene age sediments and a confined aquifer in tertiary aged sediments. The unconfined aquifer is a local water bearing reservoir and will not be correlated to a specific stratigraphic unit at this time. Depth to the water table ranges from 25 feet at the New TNX Seepage Basin to 50 feet at the Old TNX Seepage Basin. The unconfined aquifer is 45--50 feet thick and outcrops in the swamp to the west of TNX. The hydraulic gradient in the unconfined aquifer decreases westerly across the TNX Area from 0.05 to 0.01. The unconfined aquifer is separated from the underlying confined aquifer by a sandy slit aquitard (A1) which is approximately 5--10 feet thick. Researchers reported an increase in hydraulic head across this unit of approximately 8 feet which results in an upward gradient between the unconfined and confined aquifer. The confined Tertiary aquifer (C1) at TNX is 25--30 feet thick and can generally be found 60 to 90 feet below the surface. The C1 aquifer is part of the aquifer commonly referred to as the Congaree'' which occurs in the Congaree Formation. The C1 aquifer liesmore » on the Lower Tertiary aquitard (A2) which is 45--55 feet thick and is commonly referred to as the Ellenton Formation.'' Currently there is an upward gradient across A2 with a head differential of 28 feet. Regional hydrogeologic models indicate that the C1 aquifer discharges to the Savannah River producing westward groundwater flow in C1. 3 figs., 1 tab.« less

Authors:
Publication Date:
Research Org.:
Westinghouse Savannah River Co., Aiken, SC (USA)
Sponsoring Org.:
DOE/DP
OSTI Identifier:
5650791
Report Number(s):
WSRC-RP-89-269
ON: DE90000655
DOE Contract Number:
AC09-76SR00001
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; GROUND WATER; MONITORING; HYDROLOGY; MATHEMATICAL MODELS; SAVANNAH RIVER PLANT; SITE CHARACTERIZATION; AQUIFERS; PLANNING; SEDIMENTS; WATER WELLS; HYDROGEN COMPOUNDS; NATIONAL ORGANIZATIONS; OXYGEN COMPOUNDS; US AEC; US DOE; US ERDA; US ORGANIZATIONS; WATER; WELLS; 510200* - Environment, Terrestrial- Chemicals Monitoring & Transport- (-1989)

Citation Formats

Nichols, R.L. Program plan for TNX Area groundwater characterization wells. United States: N. p., 1989. Web. doi:10.2172/5650791.
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Nichols, R.L. Program plan for TNX Area groundwater characterization wells. United States. doi:10.2172/5650791.
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Nichols, R.L. Fri . "Program plan for TNX Area groundwater characterization wells". United States. doi:10.2172/5650791. https://www.osti.gov/servlets/purl/5650791.
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@article{osti_5650791,
title = {Program plan for TNX Area groundwater characterization wells},
author = {Nichols, R.L.},
abstractNote = {The TNX Area post-Cretaceous hydrogeological section consists of an unconfined aquifer in recent to Pliestocene age sediments and a confined aquifer in tertiary aged sediments. The unconfined aquifer is a local water bearing reservoir and will not be correlated to a specific stratigraphic unit at this time. Depth to the water table ranges from 25 feet at the New TNX Seepage Basin to 50 feet at the Old TNX Seepage Basin. The unconfined aquifer is 45--50 feet thick and outcrops in the swamp to the west of TNX. The hydraulic gradient in the unconfined aquifer decreases westerly across the TNX Area from 0.05 to 0.01. The unconfined aquifer is separated from the underlying confined aquifer by a sandy slit aquitard (A1) which is approximately 5--10 feet thick. Researchers reported an increase in hydraulic head across this unit of approximately 8 feet which results in an upward gradient between the unconfined and confined aquifer. The confined Tertiary aquifer (C1) at TNX is 25--30 feet thick and can generally be found 60 to 90 feet below the surface. The C1 aquifer is part of the aquifer commonly referred to as the Congaree'' which occurs in the Congaree Formation. The C1 aquifer lies on the Lower Tertiary aquitard (A2) which is 45--55 feet thick and is commonly referred to as the Ellenton Formation.'' Currently there is an upward gradient across A2 with a head differential of 28 feet. Regional hydrogeologic models indicate that the C1 aquifer discharges to the Savannah River producing westward groundwater flow in C1. 3 figs., 1 tab.},
doi = {10.2172/5650791},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri May 19 00:00:00 EDT 1989},
month = {Fri May 19 00:00:00 EDT 1989}
}
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DOI:  10.2172/5650791
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