Hydrogeology and quality of ground water in the Boone Formation and Cotter Dolomite in karst terrain of northwestern Boone County, Arkansas

Book · Tue Jan 01 04:00:00 EST 1991

OSTI ID:6994170

Leidy, V A; Morris, E E ^[1]

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1. Geological Survey, Little Rock, AR (United States)

Shallow groundwater flow systems in karst terrain of northwestern Boone County, Arkansas, are particularly susceptible to contamination. The potential for groundwater contamination probably is greater in the northern one-half of the study area where there are more photolineaments and presumably subsurface fractures. Groundwater samples from 17 springs discharging from the Boone Formation and 17 wells completed in the Cotter Dolomite were analyzed to determine ambient groundwater quality and to document water quality variations. The chemical constituents in groundwater generally did not exceed US Environmental Protection Agency primary or secondary maximum contaminant levels. However, fecal coliform and fecal streptococcus bacteria were detected in most springs and in three wells. One spring, located near an abandoned wood-treatment plant (a designated Superfund site), had maximum iron, manganese, lead, and pentachlorophenol concentration that exceeded US Environmental Protection Agency's primary or secondary maximum contamination levels for drinking water. Water samples collected from selected springs emerging from the Boone Formation exhibited an overall decrease in specific conductance and total alkalinity, calcium, magnesium, sodium, and chloride concentrations and an overall increase in nitrate, fecal coliform, and fecal streptococcus bacteria concentrations 3 to 8 hours after a rainstorm.

• OSTI ID: 6994170
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540320* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
ABANDONED SITES
ALKALI METALS
ALKALINE EARTH METALS
ARKANSAS
AROMATICS
CALCIUM
CHLORIDES
CHLORINATED AROMATIC HYDROCARBONS
CHLORINE COMPOUNDS
CONTAMINATION
DEVELOPED COUNTRIES
ECOLOGICAL CONCENTRATION
ELEMENTS
FEDERAL REGION VI
GEOLOGY
GROUND WATER
HALIDES
HALOGEN COMPOUNDS
HALOGENATED AROMATIC HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROLOGY
IRON
LAWS
LEAD
MAGNESIUM
MANGANESE
METALS
MONITORING
NORTH AMERICA
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OXYGEN COMPOUNDS
POLLUTION
POLLUTION LAWS
SODIUM
TRANSITION ELEMENTS
US SUPERFUND
USA
WATER
WATER POLLUTION