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Description of ASTM-E2993 2023ASTM E2993-23Active Standard: Standard Guide for Evaluating Potential Hazard in Buildings as a Result of Methane in the Vadose ZoneASTM E2993Scope 1.1 This guide provides a consistent basis for assessing methane in the vadose zone, evaluating hazard and risk, determining the appropriate response, and identifying the urgency of the response. 1.2 Purpose—This guide covers techniques for evaluating potential hazards associated with methane present in the vadose zone beneath or near existing or proposed buildings or other structures (for example, potential fires or explosions within the buildings or structures), when such hazards are suspected to be present based on due diligence or other site evaluations (see 6.1.1). Buildings in this context include normal below grade utilities associated with a building. 1.3 Objectives—This guide: (1) provides a practical and reasonable industry standard for evaluating, prioritizing, and addressing potential methane hazards based on mass flow and (2) provides a tool for screening out low-risk sites. 1.4 This guide offers a set of instructions for performing one or more specific operations. This guide cannot replace education or experience and should be used in conjunction with professional judgment. Not all aspects of this guide may be applicable in all circumstances. This guide is not intended to represent or replace the standard of care by which the adequacy of a given professional service should be judged, nor should this guide be applied without consideration of a project's many unique aspects. The word “Standard” in the title means only that the guide has been approved through the ASTM International consensus process. 1.5 Not addressed by this guide are: 1.5.1 Requirements or guidance or both with respect to methane sampling or evaluation in federal, state, or local regulations. Users are cautioned that federal, state, and local guidance may impose specific requirements that differ from those of this guide; 1.5.2 Safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use; 1.5.3 Emergency response situations such as sudden ruptures of gas lines or pipelines; 1.5.4 Methane entry into an enclosure from other than vadose zone soils (for example, methane evolved from well water brought into an enclosure; methane generated directly within the enclosure; groundwater intrusion, methane from leaking natural gas lines or appliances within the enclosure, direct migration into buildings from mine entries, etc.); 1.5.5 Methane entry into an enclosure situated atop or immediately adjacent to a municipal solid waste (MSW) landfill or a Construction and Demolition (C&D) landfill; 1.5.6 Methane from oil & gas reservoirs, injection wells, or other sources potentially under high pressures relative to typical vadose zone pressures; 1.5.7 Methane risk during construction activities, work in trenches, and confined space work (which are all best addressed via real-time monitoring); 1.5.8 Potential hazards from other gases and vapors that may also be present in the subsurface such as hydrogen sulfide, carbon dioxide, and/or volatile organic compounds (VOCs); 1.5.9 Anoxic conditions in enclosed spaces; 1.5.10 The forensic determination of methane source; or 1.5.11 Potential consequences of fires or explosions in enclosed spaces or other issues related to safety engineering design of structures or systems to address fires or explosions. 1.6 Units—The values stated in SI units are to be regarded as the standard. 1.6.1 Exception—Values in inch/pound units are provided for reference. 1.7 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. 1.8 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. Keywords hazard; measurement; methane; soil gas; vadose zone; ICS Code ICS Number Code 13.080.05 (Examination of soil in general) DOI: 10.1520/E2993-23 The following editions for this book are also available...This book also exists in the following packages...Subscription InformationMADCAD.com ASTM Standards subscriptions are annual and access is unlimited concurrency based (number of people that can access the subscription at any given time) from single office location. For pricing on multiple office location ASTM Standards Subscriptions, please contact us at info@madcad.com or +1 800.798.9296.
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About ASTMASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide. |
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