| Abstract: | 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. This lower aquifer is anisotropic, and transmissivity of this aquifer is greatest in a northwest-southeast direction. 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 mainly 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. (USGS) |
| Genre: | USGS Numbered Series |
| ProdID: | 30221 |
| Citation Author: | Tucci, Patrick; Hanchar, D. W.; Lee, R. W. |
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| Citation Language: | ENGLISH |
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| Citation Phsyical Description: | v, 68 p. :ill. ;28 cm. |
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| Citation Publisher: | U.S. Geological Survey ;
Open-File Reports Section [distributor], |
| Citation Series: | Water-Resources Investigations Report |
| Citation Series Code: | WRI |
| Citation Series Number: | 89-4144 |
| Citation Search Results Text: | Hydrogeology of a hazardous-waste disposal site near Brentwood, Williamson County, Tennessee; 1990; WRI; 89-4144; Tucci, Patrick; Hanchar, D. W.; Lee, R. W. |
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| Citation Year: | 1990 |
| Type: | citation/reference |
| Text: | Hydrogeology of a hazardous-waste disposal site near Brentwood, Williamson County, Tennessee; 1990; WRI; 89-4144; Tucci, Patrick; Hanchar, D. W.; Lee, R. W. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/wri_89_4144.jpg |
| URL (INDEX PAGE): | http://pubs.water.usgs.gov/wri89-4144 |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
| Publisher: | U.S. Geological Survey ;
Open-File Reports Section [distributor], |
