Hydrogeology of a hazardous-waste disposal site near Brentwood, Williamson County, Tennessee

Book · Mon Jan 01 04:00:00 EST 1990

OSTI ID:5804266

Tucci, P; Hanchar, D W; Lee, R W

Approximately 44,000 gal of industrial solvent wastes were disposed in pits on a farm near Brentwood, Tennessee, in 1978, and contaminants were reported in the soil and shallow groundwater on the site in 1985. In order for the State to evaluate possible remedial-action alternatives, an 18-month study was conducted to define the hydrogeologic setting of the site and surrounding area. The area is underlain by four hydrogeologic units: (1) an upper aquifer consisting of saturated regolith, Bigby-Cannon Limestone, and weathered Hermitage Formation; (2) the Hermitage confining unit; (3) a lower aquifer consisting of the Carters Limestone; and (4) the Lebanon confining unit. Wells generally are low yielding less than 1 gal/min, although locally the aquifers may yield as much as 80 gal/minute. Recharge to the groundwater system is primarily from precipitation, and estimates of average annual recharge rates range from 6 to 15 inches/year. Discharge from the groundwater system is primarily to the Little Harpeth River and its tributaries. Groundwater flow at the disposal site is minaly to a small topographic depression that drains the site. Geochemical data indicate four distinct water types. These types represent (1) shallow, rapidly circulating groundwater; (2) deeper (> than 100 ft), rapidly circulating groundwater; (3) shallow, slow moving groundwater; and (4) deeper, slow moving groundwater. Results of the numerical model indicate that most flow is in the upper aquifer. 18 refs., 22 figs., 3 tabs.

• OSTI ID: 5804266
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540220 -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (1990-)
540320* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
CHEMISTRY
CONTAMINATION
ENVIRONMENTAL TRANSPORT
FEDERAL REGION IV
GEOCHEMISTRY
GEOLOGY
GROUND WATER
HAZARDOUS MATERIALS
HYDROGEN COMPOUNDS
HYDROLOGY
MANAGEMENT
MASS TRANSFER
MATERIALS
NORTH AMERICA
OXYGEN COMPOUNDS
POLLUTION
REMEDIAL ACTION
SOILS
SOLVENTS
TENNESSEE
USA
WASTE DISPOSAL
WASTE MANAGEMENT
WATER