Nance, Tom2019-05-222019-05-222009-07Project #5147http://hdl.handle.net/10125/61979Includes figures and article "Case Histories of Time-Domain Electromagnetic Soundings in Environmental Geophysics" by Pieter Hoekstra and Mark W. Blohm."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."35 pagesenggroundwaterTDEMKaonoulu RanchMakawaoMauiGeology--HawaiiGroundwater--HawaiiWater-supply--HawaiiGeologyGroundwaterWater-supplyReport