The City of Dickson, Dickson County, Tennessee, and the surrounding area contains numerous manufacturers, some of which have been in operation for 30 years or more. Printing, boat building, and metal fabrication industries have historically been prevalent in the area. Each of these industries used, and continues to use, various types of industrial solvents. A number of these types of facilities in Dickson County have had documented releases of such chemicals to the environment. In addition to the presence
of manufacturing facilities, the City of Dickson and Dickson County operated a Class I landfill (Dickson County Landfill) that reportedly received industrial wastes, including solvents. A municipal well field located adjacent to the landfill has been contaminated with trichloroethene (TCE). Investigations by state and federal agencies have been performed in an effort to link the landfill with documented TCE contamination in both private water supplies and the municipal water system.
Data collected by the Centers for Disease Control and Prevention (CDC) indicates that the number of Dickson County birth defects is greater than Tennessee and national averages, without an explanation of the cause. Between 1997 and 2000, 18 families in Dickson County were identified as having cases of orofacial cleft birth defects.
VOCs have been detected in private residential wells, as well as one spring, and one municipal water supply well (well DK-21) that has been used by the City of Dickson for its potable water supply. The results of groundwater sampling and analysis for private residential wells and springs indicated the presence of one or more VOCs, including trichloroethene (TCE) and cis-1, 2-dichloroethene (DCE). A review of the DWS database indicated that 274 (82%) of the 334 registered wells on the Dickson Quadrangle were reportedly used for residential purposes
SUMMARY OF TCE AND DCE RESULTS, SPRINGS AND PRIVATE WATER
DICKSON COUNTY, TENNESSEE