描述地下水位置的数据元集标准指南;第一部分:附加识别描述符

详细信息   

• 标准号：ASTM D5408-1993(2010)e1
• 发布日期：1993
• 英文题名：Standard Guide for Set of Data Elements to Describe a Groundwater Site;
  Part OneAdditional Identification Descriptors
• 英文主题词：data confidence classification ; data element ; ground water ; monitoring location ; sampling site ; site identification ; site location ; water allocation ; water quality ; Water quality monitoring ; Data elements ; Ground-water monitoring/sampling ; Land-net location ; Site identification/investigation/selection ; Water analysis diagram
• 标准状态：现行
• 发布单位：US-ASTM
• 国际标准分类号：35.240.70 (IT applications in science)
• 载体形态：6P.;A4
• 中国标准分类号：P13
• 国别：美国材料与试验协会

文摘

Data at ground-water sites are gathered for many purposes, each of which generally requires a specific set of data elements. For example, when ground-water quality is a concern, not only are the minimum set of data elements required for the site, but information concerning the sample collection depth interval, method of collection, and date and time of collection are needed to fully qualify the data. Another group of elements are recommended for each use of the data, such as aquifer characteristics or water-level records. Normally the more information that is gathered about a site by field personnel, the easier it is to understand the ground-water conditions and to reach valid conclusions and interpretations regarding the site.

The data elements listed in this guide and Guides D5409 and D5410 should assist in planning what information can be gathered for a ground-water site and how to document these data.

Note 68212;Some important data elements may change during the existence of a site. For example, the elevation of the measuring point used for the measurement of water levels may be modified because of repair or replacement of equipment. This frequently occurs when the measuring point is an opening in the pump and the pump is modified or replaced. Because changes cannot always be anticipated, it is preferable to reference the height of the measuring point to a nearby, permanent altitude datum. The measuring point is referenced by being the same altitude (zero correction) or above (negative correction) or below (plus correction) the altitude datum. All appropriate measurements should be corrected in reference to the altitude datum before entry into the permanent record. Care must be exercised to keep the relationship of these data elements consistent throughout the duration of the site.

Some data elements have an extensive list of components. For example, the aquifer identification list described in Guide D5409, has over 5000 components. Lengthy lists of possible components are not included in this guide, however, information on where to obtain these components is included with the specific data element.

Note 78212;This guide identifies many sources, lists, etc., of information required to completely document information about any ground-water site.

1.1 This guide covers Part One of three guides to be used in conjunction with Practice D5254 that delineates the data desirable to describe a ground-water data collection or sampling site. This guide describes additional information beyond the minimum set of data elements that may be needed to identify a ground-water site. Part Two identifies physical descriptors, such as construction, for a site, while Part Three identifies usage descriptors, such as monitoring, for an individual ground-water site.

Note 18212;A ground-water site is defined as any source, location, or sampling station capable of producing water or hydrologic data from a natural stratum from below the surface of the earth. A source or facility can include a well, spring or seep, and drain or tunnel (nearly horizontal in orientation). Other sources, such as excavations, driven devices, bore holes, ponds, lakes, and sinkholes, that can be shown to be hydraulically connected to the ground water, are appropriate for the use intended.

Note 28212......