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首页> 美国政府科技报告 >Basalt Aquifer Identification, Correlation and Sampling Activities. History of Wells DB-8, DB-9, DB-10 and DB-11
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Basalt Aquifer Identification, Correlation and Sampling Activities. History of Wells DB-8, DB-9, DB-10 and DB-11

机译：玄武岩含水层识别，关联和采样活动。 Wells DB-8，DB-9，DB-10和DB-11的历史

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Research core wells have been completed to assist in the characterization of the groundwater regime of the upper confined aquifers found within the basalts of the Hanford Site. These wells were drilled on the Hanford Site for the Long-Term Transuranic Defense Waste Program. They were constructed to assure the Department of Energy that waste management operations will not provide an avenue for offsite migration of radionuclides. This second report details results of confined aquifer drilling activities. The purpose of this report is to document the drilling history of the wells by presenting as-built well construction diagrams and tables listing hole history data, coring records and bit records. Four wells were cored to a maximum depth of 1100 feet and water samples were taken from selected confined aquifers. Full depth was reached on all wells and core recovery was 94% of all formations drilled. Well DB-8 was abandoned after a well screen was destroyed while setting it in the well. Two wells, DB-9 and DB-10 were screened in the Mabton interbed and water was produced from this interval in both wells. Well DB-11 was used to explore for artesian water from the Priest Rapids flow unit on the western edge of the Hanford Site. The water was found at a depth of 1045 feet and now produces makeup water for all Hanford drilling. (ERA citation 06:003535)

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