ASTM D5474 Standard Guide for Selection of Data Elements for Groundwater Investigations
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ASTM International
Standard Guide for Selection of Data Elements for Groundwater Investigations
N D5474
Annotation
This guide covers the selection of data elements for the documentation of groundwater sites. The data elements are described in four ASTM standards outlining information that may be collected at groundwater sites. Examples of specific investigations are given with the logic of why to select individual and combinations of data elements to meet the requirements of the studies.
NOTE 1—Agroundwater site is 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 groundwater, are appropriate for the use intended.
NOTE 2—The four ASTM standards that describe the data elements for groundwater are Practice D5254 and Guides D5408, D5409, and D5410.
Systematic and consistent data collection are necessary for the investigation of the availability and the protection or restoration of groundwater resources. The level of detail, precision and bias, and the type of data that need to be collected depend on the objective of the study, the expected complexity of the system, and the resources available for the investigation. This guide presents ideas on what information should be collected for specific studies, why certain data elements are mandatory, and the importance to current and future investigations of maintaining quality control on the collection and retention of these data. This guide focuses on those data elements that are gathered at the field-site location and are used to assist in interpreting the hydrology of the groundwater source and to meet regulatory requirements. Other analytical and quality assurance/quality control (QA/ QC) considerations are addressed in other standards and beyond the scope of this guide.
