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首页> 美国政府科技报告 >Hydrologic Characteristics of the Los Alamos Well Field,with Reference to the Occurrence of Arsenic in Well la-6.
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Hydrologic Characteristics of the Los Alamos Well Field,with Reference to the Occurrence of Arsenic in Well la-6.

机译：洛斯阿拉莫斯井场的水文特征及其对la-6井砷的赋存。

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The Los Alamos well field is composed of six wells,ranging in depth from 870to 1965ft,that are completed in the Tesuque Formation,the main aquifer of the Los Alamos area. The water from the field is used for industrial and municipal supply by the Los Alamos Scientific Laboratory and the community of Los Alamos. The quality of water from individual wells varies slightly,with only three wells of the same general type. The occurrence and increase of arsenic in well LA-6during the latter part of 1974and early 1975now precludes use of water from this well. Studies were made using a combination of wells and restricting pumpage from well LA-6and on dilution by other wells in the system to determine if acceptable arsenic levels could be obtained. An attempt was also made to determine which zone of the aquifer was yielding the high arsenic concentration to the well. Water samples collected at selected depths within the well were analyzed and compared to geophysical logs. These data were then applied to select zones to be blocked at below depths of 1550, 1440, 1210,and 875ft within the well. These tests failed to isolate the arsenic bearing waters. The high concentration of arsenic occurs throughout the aquifer adjacent to the well. The average arsenic concentration at well LA-6for nine tests ranged from 159to 201mu g/l. This report summarizes the hydrologic characteristics of the wells in the Los Alamos well field for necessary background material. It also presents a summary and interpretation of data related to arsenic concentrations in wells in the field,with special reference to tests made of well LA-6during the period August 1975to June 1976. (ERA citation 03:029404)

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