Time domain electromagnetic surveys for assisting in determining the groundwater resources on Kula 1800 property, Island of Maui, Hawaii
Time domain electromagnetic surveys for assisting in determining the groundwater resources on Kula 1800 property, Island of Maui, Hawaii
Date
2006-05
Authors
Nance, Tom
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Blackhawk Geosciences, Inc.
Tom Nance Water Resource Engineering
Tom Nance Water Resource Engineering
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Abstract
This report contains the results of surface Time Domain Electromagnetic (TDEM) geophysical surveys performed for groundwater resource evaluation at the Kula 1800 Property located on the Island of Maui, Hawaii. Blackhawk, a Division of ZAPATA ENGINEERING (Blackhawk) conducted the surveys from May 2 through May 5, 2006 for Kula 1800 Investment Partners, LLC (Kula 1800 Partners) of Maui and Tom Nance Water Resource Engineering (TNWRE) of Honolulu, Hawaii.
The main objectives of the TDEM surveys on Maui were to explore for possible basal and high-level groundwater occurrences at the project site. The surveys were conducted at six TDEM sounding locations. This allowed fot the creation of two survey lines, one positioned along the Pulehu Road and the second located along the Naalae Road near the Waiakoa Gulch.
TDEM is a geophysical method that determines from the surface the geoelectric section (resistivity layering) of the subsurface. From the geoelectric section, information about geology and water quality can be inferred. This is possible because the electrical resistivity of the earth depends on lithology, porosity, the degree of saturation, and concentration of dissolved solids in the groundwater. Geophysical surveys, combined with other hydrogeologic information, are used to provide optimum locations for well placement and well completion depths.
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Keywords
groundwater,
TDEM,
Kula,
Maui,
Hawaii,
Geology--Hawaii,
Groundwater--Hawaii,
Water-supply--Hawaii,
Geology,
Groundwater,
Water-supply
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62 pages
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