Maui

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Time domain electromagnetic surveys for assisting in determining the groundwater resources on Kaonoulu Ranch, LLP, property, Island of Maui, Hawaii

(Blackhawk Geosciences, Inc., 2009-07) Nance, Tom

"This report contains the procedures and results of surface Time Domain Electromagnetic (TDEM) geophysical surveys performed for groundwater resource evaluation on portions of Kaonoulu Ranch, LLP (Kaonoulu Ranch) property in the Makawao District, Island of Maui. Zapata Incorporated, Blackhawk Division (ZAPATA/Blackhawk) conducted the surveys from June 16 through June 18, 2009 for Kaonoulu Ranch, LLP located in the town of Kula, Maui. The main objective of the TDEM surveys was to explore for basal and high-level groundwater occurrences on the Kaonoulu Ranch property. The surveys were conducted at four TDEM sites to help determine the location for a future groundwater well on the property. 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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Time domain electromagnetic surveys for assisting in determining the groundwater resources on Kula 1800 property, Island of Maui, Hawaii

(Blackhawk Geosciences, Inc., 2006-05) Nance, Tom

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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Time domain electromagnetic surveys for assisting in determining the groundwater resources on Haleakala Ranch property, Island of Maui, Hawaii

(Blackhawk Geosciences, Inc., 2003-07-02) Nance, Tom

This report contains the results of surface Time Domain Electromagnetic (TDEM) geophysical surveys performed for groundwater resource evaluation on the Island of Maui. Blackhawk GeoSciences (Blackhawk) conducted the surveys on June 16 and June 17, 2003, for Tom Nance Water Resources Engineering (TNWRE) and Betsill Brothers Construction (BBC). 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, because the electrical resistivity of the earth depends on lithology, porosity, and concentration of dissolved solids in the ground water. The general objective of the TDEM surveys on Maui was to explore for possible basal groundwater occurrences beneath the survey area. These TDEM surveys were conducted near the 600ft elevation level located above the High Technology Park on Haleakala Ranch property. Geophysical surveys, combined with other hydrogeologic information, are used to provide optimum locations for well placement and well completion depths.

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Geophysical surveys for assisting in determining the ground water resources near Kailua, north coast, Island of Maui, Hawaii

(Blackhawk Geosciences, Inc., 1998-06-22) Nance, Tom

The main objective of the geophysical survey was to assist in characterizing the hydrologic regime in the study area for a proposed ground water well. Ground water resources can occur on the Island of Maui basically in two modes: • In a basal mode where a lens of fresh water floats on saline water, and o In a high-level mode where the ground water occurrence is controlled by subsurface damming structures. From the results of the TDEM survey, a relatively thick basal fresh/brackish water resource is inferred. The lens of fresh/brackish water is expected to be about 200 ft thick under the area surveyed.

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Geophysical surveys for assisting in determining the ground water resources, Kihei exploration site, Island of Maui, Hawaii

(Blackhawk Geosciences, Inc., 1998-06-16) Nance, Tom

The main objective of the geophysical survey was to assist in characterizing the hydrologic regime in the study area for a proposed ground water well. Ground water resources can occur on the Island of Maui basically in two modes: • In a basal mode where a lens of fresh water floats on saline water, and o In a high-level mode where the ground water occurrence is controlled by subsurface damming structures.

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Geophysical surveys for assisting in determining the ground water resources above the Makena Golf Course, Island of Maui, Hawaii

(Blackhawk Geosciences, Inc., 1998-06-18) Nance, Tom

This report contains the results of geophysical surveys conducted to assist in determining the ground water resources above the Makena Golf Course located near Makena, Maui, Hawaii. The surveys were performed by Blackhawk Geometries (Blackhawk) for the Makena Resort Corporation (MRC) during May 8, 1998. The geophysical method employed during this survey was Time Domain Electromagnetic (TDEM) soundings. The main objective of the geophysical survey was to assist in characterizing the hydrologic regime in the study area for proposed ground water wells. Ground water resources can occur on the Island of Maui basically in two modes: • In a basal mode where a lens of fresh water floats on saline water, and o In a high-level mode where the ground water occurrence is controlled by subsurface damming structures. The volcanic rocks are generally highly permeable and this allows rainwater to infiltrate directly downward through the island mass. In the Makena area, ground water was expected to occur mainly as a deep basal fresh/brackish water lens. High-level water resources were not expected at the study site.

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Geophysical surveys for assisting in determining the ground water resources near the Pookela Water Tank, Island of Maui, Hawaii

(Blackhawk Geosciences, Inc., 1998-06-09) Nance, Tom

This report contains the results of geophysical surveys conducted to assist in determining the ground water resources near the Pookela Water Tank located in Makawao, Maui, Hawaii. The surveys were performed by Blackhawk Geometries (Blackhawk) for the Malama Group (Malama) during May 4 to May 14, 1998. The geophysical method employed during this survey was Time Domain Electromagnetic (TDEM) soundings. The TDEM soundings were positioned in the vicinity of Makawao. The main objective of the geophysical survey was to assist in characterizing the hydrologic regime in the study area for a proposed ground water well. Ground water resources can occur on the Island of Maui basically in two modes: • In a basal mode where a lens of fresh water floats on saline water, and • In a high-level mode where the ground water occurrence is controlled by subsurface damming structures. The volcanic rocks are generally highly permeable and this allows rainwater to infiltrate directly downward through the island mass. In the Makawao area, ground water was expected to occur as both a deep fresh/brackish water interface and possible high-level water at locations above subsurface damming structures. From extensive TDEM studies in the North Kana area on Hawaii, a main ground water boundary has been located that generally parallels the coast line. From well production data near the Keauhou area, it is now postulated that other secondary damming structures exist both upslope and perpendicular to the main damming structure. A major ring fracture developed from a caldera is outlined, which is upslope and near parallel to the coast line with radial fractures which form near perpendicular to the major ring fracture. It is thought that the fractures are zones of weakness where intrusive dikes preferentially form, and these dikes can act as vertical ground water barriers. The radial fractures could divide the high-level water behind the ring fractures- into different compartments. The water production from a single compartment will be determined by several factors; including permeability, porosity, size of and recharge to the compartment.

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Geophysical survey, ground water evaluation, Ulupalakua Ranch, Maui, Hawaii

(Blackhawk Geosciences, Inc., 1990-06-20) Nance, Tom

The general objective of the geophysical survey at the Ulupalakua Ranch property was to assist in characterizing the hydrologic regime in the study area. The volcanic rocks are generally highly permeable and this allows rainwater to percolate with little impedance directly downward through the island mass. Ground water resources can occur on the Island of Hawaii basically in two modes: • In a basal mode, where a lens-shaped body of fresh water floats on saline water, and • In a high-level mode, where the ground water occurrence is controlled by subsurface damming structures. The surficial volcanic rocks are generally highly permeable and this allows rainwater to infiltrate directly downward through the island mass. Previous TDEM surveys on the Hawaiian Islands have reliably mapped the boundary between fresh water in the basal mode and high-level water occurrences. Geophysical surveys, combined with other hydrogeologic information, are used to provide optimum locations for well placement and completion depths.

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Geophysical survey, ground water evaluation, Haleakala Ranch, Maui, Hawaii

(Blackhawk Geosciences, Inc., 1990-05-24) Nance, Tom

At Haleakala Ranch ground water was expected to occur mainly as basal fresh water. The impetus for using geophysics is that the cost of a geophysical station is about one-thousandth the cost of completing a well at elevations above 1,000 ft. Geophysical surveys, combined with other hydrogeologic information, are used to provide optimum locations for well placement and well completion depths. Ground water resources can occur on the Island of Hawaii basically in two modes: • In a basal mode, where a lens-shaped body of fresh water floats on saline water, and • In a high-level mode, where the ground water occurrence is controlled by subsurface damming structures. The surficial volcanic rocks are generally highly permeable and this allows rainwater to infiltrate directly downward through the island mass. Previous TDEM surveys on the Hawaiian Islands have reliably mapped the boundary between fresh water in the basal mode and high-level water occurrences. Geophysical surveys, combined with other hydrogeologic information, are used to provide optimum locations for well placement and completion depths.

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Time domain electromagnetic surveys for assisting in determining the groundwater resources on property located in the Lahaina district, above Kaanapali, Island of Maui

(Blackhawk Geosciences, Inc., 2009-11) Nance, Tom

"This report contains the procedures and results of surface Time Domain Electromagnetic (TDEM) geophysical surveys performed for groundwater resource evaluation on property located in the Lahaina District, above the town of Kaanapali, Maui. The property included land owned by West Maui Land Company, Inc (WMLCI) and Kaanapali Land Management Corporation (KLMC). Zapata Incorporated, Blackhawk Division (ZAPATA/Blackhawk) performed the surveys for Belt Collins Hawaii Ltd (BCHL) and Tom Nance Water Resource Engineering (TNWRE) from October 20 through October 26, 2009. The project is known as Villages of Leiali’i and was accomplished for the Hawaii Housing Finance and Development Corporation (HHFDC) located in Honolulu, Hawaii. The main objective of the TDEM surveys was to explore for basal and high-level groundwater occurrences on the property. The surveys were conducted at six TDEM sites to help determine the location for a future groundwater well. TDEM is a geophysical method that determines from 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, 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 water well placement and well completion depths."

Maui

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