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WRRCTR No. 4 Development of Deep Monitoring Stations in the Pearl Harbor Ground Water Area, Oahu
|Title:||WRRCTR No. 4 Development of Deep Monitoring Stations in the Pearl Harbor Ground Water Area, Oahu|
|Authors:||Cox, Doak C.|
|LC Subject Headings:||Groundwater -- Hawaii -- Oahu.|
Monitoring wells -- Hawaii -- Oahu.
Pearl Harbor (Hawaii)
|Date Issued:||Mar 1967|
|Publisher:||Water Resources Research Center, University of Hawaii at Manoa|
|Citation:||Cox DC, Lao C. 1967. Development of deep monitoring stations in the Pearl Harbor ground water area, Oahu. Honolulu (HI): Water Resources Research Center, University of Hawaii at Manoa. WRRC technical report, 4.|
|Series:||WRRC Technical Reports|
|Abstract:||Two deep wells, one at Puuloa and the other at Ewa Beach in the Pearl Harbor area were drilled through the thick sedimentary gap into Koolau basalt, and have been readied for multiple-zone recording of water levels and water quality. Plastic pipes were lowered into the wells to selected depths determined by core composition and electric well logs. Gravel and beach sand were used selectively to backfill the wells. Thirteen sampling tubes were installed in the Puuloa well, and seven sampling points were placed in the main well at Ewa Beach. A shallow auxiliary well was also drilled at Ewa Beach. Evidence from preliminary development of the deep aquifer at Ewa Beach indicates the possible existence of a thin layer of fresher water floating on water of nearly seawater composition. Water levels are being monitored in this aquifer and show a tidal efficiency of approximately 15 percent. The smaller sampling tubes are being developed at both sites.|
|Pages/Duration:||ix + 36 pages|
|Appears in Collections:||
WRRC Technical Reports|
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