Toxic Substances Hydrology Program

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Filter Total Items: 2,651
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Year Published: 1981

Subsurface injection of liquid waste in Florida, United States of America

In 1979, liquid waste was injected into the subsurface of Florida by 10 injection systems at an aggregate average rate of 165,000 m3/d. All the systems inject into carbonate rocks that contain salty water. Extensive precautions are taken in the construction of the injection wells and in the monitoring of their operation to provide assurance that...

Vecchioli, John

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Year Published: 1981

A transient laboratory method for determining the hydraulic properties of 'tight' rocks-II. Application

In Part I a general analytical solution for the transient pulse test was presented. Part II presents a graphical method for analyzing data from a test to obtain the hydraulic properties of the sample. The general solution depends on both hydraulic conductivity and specific storage and, in theory, analysis of the data can provide values for both of...

Neuzil, C.E.; Cooley, C.; Silliman, Stephen E.; Bredehoeft, J.D.; Hsieh, P.A.
A transient laboratory method for determining the hydraulic properties of 'tight' rocks-II. Application; 1981; Article; Journal; International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts; Neuzil, C. E.; Cooley, C.; Silliman, S. E.; Bredehoeft, J. D.; Hsieh, P. A.

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Year Published: 1981

Role of numerical simulation in analysis of ground-water quality problems

The increasing public awareness and concern about the hazards of toxic chemicals contaminating aquifers has created an increased need for predictive capabilities to analyze ground-water contamination problems. Several digital models to simulate the movement and concentration of ground-water contaminants have been documented recently. Most simulate...

Konikow, Leonard F.

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Year Published: 1981

Role of solute-transport models in the analysis of groundwater salinity problems in agricultural areas

Undesirable salinity increases occur in both groundwater and surface water and are commonly related to agricultural practices. Groundwater recharge from precipitation or irrigation will transport and disperse residual salts concentrated by evapotranspiration, salts leached from soil and aquifer materials, as well as some dissolved fertilizers and...

Konikow, Leonard F.
Role of solute-transport models in the analysis of groundwater salinity problems in agricultural areas; 1981; Article; Journal; Agricultural Water Management; Konikow, L. F.

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Year Published: 1979

Chemical changes in an industrial waste liquid during post-injection movement in a limestone aquifer, Pensacola, Florida

An industrial waste liquid containing organonitrile compounds and nitrate ion has been injected into the lower limestone of the Floridan aquifer near Pensacola, Florida since June 1975. Chemical analyses of water from monitor wells and backflow from the injection well indicate that organic carbon compounds are converted to CO2 and nitrate is...

Ehrlich, G.G.; Godsy, E.M.; Pascale, C.A.; Vecchioli, John

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Year Published: 1979

Monitoring of subsurface injection of wastes, Florida

Injection of waste liquids into Florida's subsurface is physically feasible in many places but should be accompanied by monitoring of the waste-receiving aquifer system in addition to the injection facility. Monitoring of the interaction of factors including hydrogeologic conditions, well construction, waste volumes and characteristics, and...

Vecchioli, John

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Year Published: 1977

Disposal of saltwater during well construction--Problems and solutions

The recent interest in the disposal of treated sewage effluent by deep-well injection into salt-water-filled aquifers has increased the need for proper disposal of salt water as more wells are drilled and tested each year.The effects on an unconfined aquifer of the improper disposal of salt water associated with the construction of three wells in...

Pitt, William A.; Meyer, Frederick W.; Hull, John E.

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Year Published: 1977

Storage of treated sewage effluent and stormwater in a saline aquifer, Pinellas Peninsula, Florida

The Pinellas Peninsula, an area of 750 square kilometres (290 square miles) in coastal west-central Florida, is a small hydrogeologic replica of Florida. Most of the Peninsula's water supply is imported from well fields as much as 65 kilometres (40 miles) inland. Stresses on the hydrologic environment of the Peninsula and on adjacent water bodies...

Rosenshein, J.S.; Hickey, J.J.

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Year Published: 1975

Monitoring regional effects of high pressure injection of wastewater in a limestone aquifer

More than 10 billion gallons (38 × 106 m3) of acid industrial liquid waste has been injected in about 11 years under high pressure into a saline-water-filled part of a limestone aquifer of low transmissivity between 1,400 and 1,700 feet (430 and 520 m) below land surface near Pensacola, Florida. A similar waste disposal system is planned for the...

Faulkner, Glen L.; Pascale, Charles A.

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Year Published: 1971

Hydrogeochemical effects of injecting wastes into a limestone aquifer near Pensacola, Florida

Acidic industrial wastes have been injected into deep wells in a limestone aquifer near Pensacola, Florida, since 1963. Prior geohydrologic studies in the area had indicated that the limestone aquifer contained nonpotable water and was overlain by an extensive clay confining layer.Two injection wells are presently being used to inject the waste at...

Goolsby, Donald A.

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Year Published: 1966

Waste injection into a deep limestone in northwestern Florida

During a three-month trial period, 70 million gallons of industrial wastes were successfully injected at moderate pressures into a deep limestone in the westernmost part of Florida. The movement of these wastes is expected to be predominantly southward toward the natural discharge area which is presumed to be far out in the Gulf of Mexico. The...

Barraclough, J.T.