Stability of nitrate-ion in simulated deposition samples used for quality-assurance activities by the U. S. Geological Survey

Book · Sun Jan 01 00:00:00 EST 1989

OSTI ID:6161005

Eckhardt, D A.V.; Pearsall, K A

Trichloroethylene (TCE), 1,2-dichloroethylene (DCE), and tetrachloroethylene (PCE) have been detected in water from five public-supply wells and six cooling-water wells that tap the Magothy aquifer at Roosevelt Field. The cooling water is discharged after use to the water table aquifer through a nearby recharge basin and a subsurface drain field. Three plumes of TCE in groundwater have been delineated - the source plume, which has penetrated both aquifers, and two more recent plumes emanating from the two discharge sites in the water-table aquifer. Concentrations of inorganic constituents in the three plumes are the same as those in ambient water in the area. The two secondary plumes discharged cooling water extended at least 1,000 ft south-southeastward in the direction of regional groundwater flow. Pumping at wells screened in the middle and basal sections of the Magothy aquifers, where clay layers are absent and sandy zones provide good vertical hydraulic connection within the aquifer system, has increased the rate of downward contaminant advection. The transient increases in downward movement are cumulative over time and have brought TCE to the bottom of the Magothy aquifer, 500 ft below land surface. 38 refs., 11 figs., 8 tabs.

• OSTI ID: 6161005
• Resource Relation: Related Information: USGS Water-Resources Investigations Report 86-4333
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
CHLORINATED ALIPHATIC HYDROCARBONS
ENVIRONMENTAL TRANSPORT
GROUND WATER
CONTAMINATION
NEW YORK
WATER POLLUTION
AQUIFERS
ECOLOGICAL CONCENTRATION
HYDROLOGY
ORGANIC SOLVENTS
PLUMES
FEDERAL REGION II
HALOGENATED ALIPHATIC HYDROCARBONS
HYDROGEN COMPOUNDS
MASS TRANSFER
NORTH AMERICA
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OXYGEN COMPOUNDS
POLLUTION
SOLVENTS
USA
WATER
540320* - Environment
Aquatic- Chemicals Monitoring & Transport- (1990-)