ASTM D8215-21
Standard Practice for Statistical Modeling of Uncertainty in Assessment of In-place Coal Resources

Standard No.

ASTM D8215-21

Release Date

2021

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM D8215-21

Scope

1.1 This practice covers a procedure for quantitatively determining in-place tonnage uncertainty in a coal resource assessment. The practice uses a database on coal occurrence and applies geostatistical methods to model the uncertainty associated with a tonnage estimated for one or more coal seams. The practice includes instruction for the preparation of results in graphical form. 1.2 This document does not include a detailed presentation of the basic theory behind the formulation of the standard, which can be found in numerous publications, with a selection being given in the references (1-3).2 1.3 This practice should be used in conjunction with professional judgment of the many unique aspects of a coal deposit. 1.4 Units—The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard. NOTE 1—All values given in parentheses after SI units are stated in inch-pound units. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ASTM D8215-21 Referenced Document

• ASTM D5549 
• ASTM D5922 Standard Guide for Analysis of Spatial Variation in Geostatistical Site Investigations
• ASTM D5923 Standard Guide for Selection of Kriging Methods in Geostatistical Site Investigations
• ASTM D5924 Standard Guide for Selection of Simulation Approaches in Geostatistical Site Investigations
• ASTM D621 Standard test method for particulate impurities in middle distillate fuels by laboratory filtration
• ASTM D653 Standard Terminology Relating to Soil, Rock, and Contained Fluids

ASTM D8215-21 history

• 2021 ASTM D8215-21 Standard Practice for Statistical Modeling of Uncertainty in Assessment of In-place Coal Resources
• 2020 ASTM D8215-20 Standard Practice for Statistical Modeling of Uncertainty in Assessment of In-place Coal Resources
• 2019 ASTM D8215-19a Standard Practice for Statistical Modeling of Uncertainty in Assessment of In-place Coal Resources
• 2019 ASTM D8215-19 Standard Practice for Statistical Modeling of Uncertainty in Assessment of In-place Coal Resources
• 2018 ASTM D8215-18 Standard Practice for Statistical Modeling of Uncertainty in Assessment of In-place Coal Resources