Assessment of hydrogeologic conditions with emphasis on water quality and wastewater injection, southwest Sarasota and west Charlotte Counties, Florida

Book · Tue Jan 01 04:00:00 EST 1991

OSTI ID:6940194

Hutchinson, C B ^[1]

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1. Geological Survey, Tallahassee, FL (United States)

The 250 sq mi area of southwest Sarasota and west Charlotte Counties is underlain by a complex geohydrologic system having diverse groundwater quality. The surficial and intermediate aquifer systems and the Upper Floridan aquifer of the Floridan aquifer system contain six separate aquifers, or permeable zones, and have a total thickness of about 2,000 ft. Water in the clastic surficial aquifer system is potable and is tapped by hundreds of shallow, low-yielding, supply wells. Water in the mixed clastic and carbonate intermediate aquifer system is potable in the upper part, but in the lower part, because of increasing salinity, it is used primarily for reverse osmosis desalinization feed water and irrigation. Potential groundwater contamination problems include flooding by storm tides, upward movement of saline water toward pumping centers by natural and induced leakage or through improperly constructed and abandoned wells, and injected into deep zones. The study area encompasses seven wastewater injection sites that have a projected capacity for injecting 29 million gallons per day (gpd) into the zone 1,100 to 2,050 ft below land surface. There are six additional sites within 20 miles. The numerical model was used to simulate injection through a representative well at a rate of 1 million gpd for 10 years. 63 refs., 38 figs., 9 tabs.

• OSTI ID: 6940194
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540320* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
AQUIFERS
CONTAMINATION
DEVELOPED COUNTRIES
FLORIDA
GEOLOGY
GROUND WATER
HYDROGEN COMPOUNDS
HYDROLOGY
LIQUID WASTES
MATHEMATICAL MODELS
NORTH AMERICA
OXYGEN COMPOUNDS
POLLUTION
USA
WASTE WATER
WASTES
WATER
WATER POLLUTION